diff options
Diffstat (limited to 'macosx/tkMacOSXFont.c')
| -rw-r--r-- | macosx/tkMacOSXFont.c | 3063 |
1 files changed, 1669 insertions, 1394 deletions
diff --git a/macosx/tkMacOSXFont.c b/macosx/tkMacOSXFont.c index b09e62e..1cf8951 100644 --- a/macosx/tkMacOSXFont.c +++ b/macosx/tkMacOSXFont.c @@ -2,261 +2,264 @@ * tkMacOSXFont.c -- * * Contains the Macintosh implementation of the platform-independant - * font package interface. + * font package interface. This version uses ATSU instead of Quickdraw. + * + * Copyright 2002-2004 Benjamin Riefenstahl, Benjamin.Riefenstahl@epost.de + * Copyright (c) 2006-2008 Daniel A. Steffen <das@users.sourceforge.net> + * + * Some functions were originally copied verbatim from the QuickDraw version + * of tkMacOSXFont.c, which had these copyright notices: * * Copyright (c) 1990-1994 The Regents of the University of California. * Copyright (c) 1994-1997 Sun Microsystems, Inc. * Copyright 2001, Apple Computer, Inc. - * Copyright (c) 2006-2007 Daniel A. Steffen <das@users.sourceforge.net> * * See the file "license.terms" for information on usage and redistribution * of this file, and for a DISCLAIMER OF ALL WARRANTIES. + * + * Todos: + * + * - Get away from Font Manager and Quickdraw functions as much as possible, + * replace with ATS functions instead. + * + * - Use Font Manager functions to translate ids from ATS to Font Manager + * instead of just assuming that they are the same. + * + * - Get a second font register going for fonts that are not assigned to a + * font family by the OS. On my system I have 27 fonts of that type, + * Hebrew, Arabic and Hindi fonts that actually come with the system. + * FMGetFontFamilyInstanceFromFont() returns -981 (kFMInvalidFontFamilyErr) + * for these and they are not listed when enumerating families, but they + * are when enumerating fonts directly. The problem that the OS sees may + * be that at least some of them do not contain any Latin characters. Note + * that such fonts can not be used for controls, because controls + * definitely require a family id (this assertion needs testing). */ #include "tkMacOSXPrivate.h" #include "tkMacOSXFont.h" -#include "tclInt.h" /* for Tcl_CreateNamespace() */ - /* - * Dealing with pascal strings. - */ - -#ifndef StrLength -#define StrLength(s) (*((unsigned char *) (s))) -#endif -#ifndef StrBody -#define StrBody(s) ((char *) (s) + 1) +#ifdef TK_MAC_DEBUG +#define TK_MAC_DEBUG_FONTS #endif -#define pstrcmp(s1, s2) RelString((s1), (s2), 1, 1) -#define pstrcasecmp(s1, s2) RelString((s1), (s2), 0, 1) +*/ /* - * The preferred font encodings. + * Problem: The sum of two parts is not the same as the whole. In particular + * the width of two separately measured strings will usually be larger than + * the width of them pasted together. Tk has a design bug here, because it + * generally assumes that this kind of arithmetic works. + * To workaround this, #define TK_MAC_COALESCE_LINE to 1 below, we then avoid + * lines that tremble and shiver while the cursor passes through them by + * undercutting the system and behind the scenes pasting strings together that + * look like they are on the same line and adjacent and that are drawn with + * the same font. To do this we need some global data. */ - -static const char *encodingList[] = { - "macRoman", "macJapan", NULL -}; +#define TK_MAC_COALESCE_LINE 0 /* - * The following structures are used to map the script/language codes of a - * font to the name that should be passed to Tcl_GetTextEncoding() to obtain - * the encoding for that font. The set of numeric constants is fixed and - * defined by Apple. + * The following structure represents our Macintosh-specific implementation + * of a font object. */ -static TkStateMap scriptMap[] = { - {smRoman, "macRoman"}, - {smJapanese, "macJapan"}, - {smTradChinese, "macChinese"}, - {smKorean, "macKorean"}, - {smArabic, "macArabic"}, - {smHebrew, "macHebrew"}, - {smGreek, "macGreek"}, - {smCyrillic, "macCyrillic"}, - {smRSymbol, "macRSymbol"}, - {smDevanagari, "macDevanagari"}, - {smGurmukhi, "macGurmukhi"}, - {smGujarati, "macGujarati"}, - {smOriya, "macOriya"}, - {smBengali, "macBengali"}, - {smTamil, "macTamil"}, - {smTelugu, "macTelugu"}, - {smKannada, "macKannada"}, - {smMalayalam, "macMalayalam"}, - {smSinhalese, "macSinhalese"}, - {smBurmese, "macBurmese"}, - {smKhmer, "macKhmer"}, - {smThai, "macThailand"}, - {smLaotian, "macLaos"}, - {smGeorgian, "macGeorgia"}, - {smArmenian, "macArmenia"}, - {smSimpChinese, "macSimpChinese"}, - {smTibetan, "macTIbet"}, - {smMongolian, "macMongolia"}, - {smGeez, "macEthiopia"}, - {smEastEurRoman, "macCentEuro"}, - {smVietnamese, "macVietnam"}, - {smExtArabic, "macSindhi"}, - {0, NULL} -}; +typedef struct { + TkFont font; /* Stuff used by generic font package. Must + * be first in structure. */ -static TkStateMap romanMap[] = { - {langCroatian, "macCroatian"}, - {langSlovenian, "macCroatian"}, - {langIcelandic, "macIceland"}, - {langRomanian, "macRomania"}, - {langTurkish, "macTurkish"}, - {langGreek, "macGreek"}, - {0, NULL} -}; + /* + * The ATSU view of the font and other text properties. Used for drawing + * and measuring. + */ -static TkStateMap cyrillicMap[] = { - {langUkrainian, "macUkraine"}, - {langBulgarian, "macBulgaria"}, - {0, NULL} -}; + ATSUFontID atsuFontId; /* == FMFont. */ + ATSUTextLayout atsuLayout; /* ATSU layout object, representing the whole + * text that ATSU sees with some option + * bits. */ + ATSUStyle atsuStyle; /* ATSU style object, representing a run of + * text with the same properties. */ + + /* + * The QuickDraw view of the font. Used to configure controls. + */ + + FMFontFamily qdFont; /* == FMFontFamilyId, Carbon replacement for + * QD face numbers. */ + short qdSize; /* Font size in points. */ + short qdStyle; /* QuickDraw style bits. */ +} MacFont; /* - * The following structure represents a font family. It is assumed that - * all screen fonts constructed from the same "font family" share certain - * properties; all screen fonts with the same "font family" point to a - * shared instance of this structure. The most important shared property - * is the character existence metrics, used to determine if a screen font - * can display a given Unicode character. - * - * Under Macintosh, a "font family" is uniquely identified by its face number. + * Information about font families, initialized at startup time. Font + * families are described by a mapping from UTF-8 names to MacOS font family + * IDs. The whole list is kept as the sorted array "familyList", allocated + * with ckrealloc(). + * + * Note: This would have been easier, if we could just have used Tcl hash + * arrays. Unfortunately there seems to be no pre-packaged + * non-case-sensitive version of that available. */ +typedef struct { + const char * name; + FMFontFamily familyId; +} MacFontFamily; -#define FONTMAP_SHIFT 10 +static MacFontFamily * familyList = NULL; +static int + familyListNextFree = 0, /* The next free slot in familyList. */ + familyListMaxValid = 0, /* The top of the sorted area. */ + familyListSize = 0; /* The size of the whole array. */ -#define FONTMAP_PAGES (1 << (sizeof(Tcl_UniChar) * 8 - FONTMAP_SHIFT)) -#define FONTMAP_BITSPERPAGE (1 << FONTMAP_SHIFT) +/* + * A simple one-shot sub-allocator for fast and efficient allocation of + * strings. Used by the familyList array for the names. These strings are + * only allocated once at startup and never freed. If you ever need to + * re-initialize this, you can just ckfree() all the StringBlocks in the list + * and start over. + */ -typedef struct FontFamily { - struct FontFamily *nextPtr; /* Next in list of all known font families. */ - int refCount; /* How many SubFonts are referring to this - * FontFamily. When the refCount drops to - * zero, this FontFamily may be freed. */ - /* - * Key. - */ +#define STRING_BLOCK_MAX (1024-8) /* Make sizeof(StringBlock) == + * 1024. */ +typedef struct StringBlock { + struct StringBlock *next; /* Starting from "stringMemory" these + * blocks form a linked list. */ + int nextFree; /* Top of the used area in the + * "strings" member. */ + char strings[STRING_BLOCK_MAX]; /* The actual memory managed here. */ +} StringBlock; + +static StringBlock *stringMemory = NULL; + +#if TK_MAC_COALESCE_LINE +static Tcl_DString currentLine; /* The current line as seen so far. This + * contains a Tcl_UniChar DString. */ +static int + currentY = -1, /* The Y position (row in pixels) of the + * current line. */ + currentLeft = -1, /* The left edge (pixels) of the current + * line. */ + currentRight = -1; /* The right edge (pixels) of the current + * line. */ +static const MacFont *currentFontPtr = NULL; + /* The font of the current line. */ +#endif /* TK_MAC_COALESCE_LINE */ + +static int antialiasedTextEnabled; - FMFontFamily faceNum; /* Unique face number key for this FontFamily. */ +/* + * The names for our "native" fonts. + */ - /* - * Derived properties. - */ +#define SYSTEMFONT_NAME "system" +#define APPLFONT_NAME "application" +#define MENUITEMFONT_NAME "menu" + +struct SystemFontMapEntry { + const ThemeFontID id; + const char *systemName; + const char *tkName; + const char *tkName1; +}; - Tcl_Encoding encoding; /* Encoding for this font family. */ - int isSymbolFont; /* Non-zero if this is a symbol family. */ - int isMultiByteFont; /* Non-zero if this is a multi-byte family. */ - char typeTable[256]; /* Table that identfies all lead bytes for a - * multi-byte family, used when measuring chars. - * If a byte is a lead byte, the value at the - * corresponding position in the typeTable is 1, - * otherwise 0. If this is a single-byte font, - * all entries are 0. */ - char *fontMap[FONTMAP_PAGES]; - /* Two-level sparse table used to determine - * quickly if the specified character exists. - * As characters are encountered, more pages - * in this table are dynamically added. The - * contents of each page is a bitmask - * consisting of FONTMAP_BITSPERPAGE bits, - * representing whether this font can be used - * to display the given character at the - * corresponding bit position. The high bits - * of the character are used to pick which - * page of the table is used. */ -} FontFamily; +#define ThemeFont(n, ...) { kTheme##n##Font, "system" #n "Font", ##__VA_ARGS__ } +static const struct SystemFontMapEntry systemFontMap[] = { + ThemeFont(System, "TkDefaultFont", "TkIconFont"), + ThemeFont(EmphasizedSystem, "TkCaptionFont"), + ThemeFont(SmallSystem, "TkHeadingFont", "TkTooltipFont"), + ThemeFont(SmallEmphasizedSystem), + ThemeFont(Application, "TkTextFont"), + ThemeFont(Label, "TkSmallCaptionFont"), + ThemeFont(Views), + ThemeFont(MenuTitle), + ThemeFont(MenuItem, "TkMenuFont"), + ThemeFont(MenuItemMark), + ThemeFont(MenuItemCmdKey), + ThemeFont(WindowTitle), + ThemeFont(PushButton), + ThemeFont(UtilityWindowTitle), + ThemeFont(AlertHeader), + ThemeFont(Toolbar), + ThemeFont(MiniSystem), + { kThemeSystemFontDetail, "systemDetailSystemFont" }, + { kThemeSystemFontDetailEmphasized, "systemDetailEmphasizedSystemFont" }, + { -1, NULL } +}; +#undef ThemeFont /* - * The following structure encapsulates an individual screen font. A font - * object is made up of however many SubFonts are necessary to display a - * stream of multilingual characters. + * Procedures used only in this file. */ -typedef struct SubFont { - char **fontMap; /* Pointer to font map from the FontFamily, - * cached here to save a dereference. */ - FontFamily *familyPtr; /* The FontFamily for this SubFont. */ -} SubFont; +static void LayoutSetString(const MacFont *fontPtr, + const TkMacOSXDrawingContext *drawingContextPtr, + const UniChar * uchars, int ulen); /* - * The following structure represents Macintosh's implementation of a font - * object. + * The actual workers. */ -#define SUBFONT_SPACE 3 +static int MeasureStringWidth(const MacFont *fontPtr, int start, int end); -typedef struct MacFont { - TkFont font; /* Stuff used by generic font package. Must - * be first in structure. */ - SubFont staticSubFonts[SUBFONT_SPACE]; - /* Builtin space for a limited number of - * SubFonts. */ - int numSubFonts; /* Length of following array. */ - SubFont *subFontArray; /* Array of SubFonts that have been loaded - * in order to draw/measure all the characters - * encountered by this font so far. All fonts - * start off with one SubFont initialized by - * AllocFont() from the original set of font - * attributes. Usually points to - * staticSubFonts, but may point to malloced - * space if there are lots of SubFonts. */ - - short size; /* Font size in pixels, constructed from - * font attributes. */ - short style; /* Style bits, constructed from font - * attributes. */ -} MacFont; +#if TK_MAC_COALESCE_LINE +static const Tcl_UniChar *UpdateLineBuffer(const MacFont *fontPtr, + const TkMacOSXDrawingContext *drawingContextPtr, const char *source, + int numBytes, int x, int y, int * offset); +#endif /* TK_MAC_COALESCE_LINE */ /* - * The following structure is used to map between the UTF-8 name for a font and - * the name that the Macintosh uses to refer to the font, in order to determine - * if a font exists. The Macintosh names for fonts are stored in the encoding - * of the font itself. + * Initialization and setup of a font data structure. */ -typedef struct FontNameMap { - Tk_Uid utfName; /* The name of the font in UTF-8. */ - StringPtr nativeName; /* The name of the font in the font's encoding. */ - FMFontFamily faceNum; /* Unique face number for this font. */ -} FontNameMap; +static const char *FamilyNameForFamilyID(FMFontFamily familyId); +static void InitFont(FMFontFamily familyId, const char *familyName, + int size, int qdStyle, MacFont *fontPtr); +static void InitATSUObjects(FMFontFamily familyId, short qdsize, short qdStyle, + ATSUFontID *fontIdPtr, ATSUTextLayout *layoutPtr, ATSUStyle *stylePtr); +static void InitATSUStyle(ATSUFontID fontId, short ptSize, short qdStyle, + ATSUStyle style); +static void SetFontFeatures(ATSUFontID fontId, int fixed, short size, + ATSUStyle style); +static void AdjustFontHeight(MacFont *fontPtr); +static void InitATSULayout(const TkMacOSXDrawingContext *drawingContextPtr, + ATSUTextLayout layout, int fixed); +static void ReleaseFont(MacFont *fontPtr); /* - * The list of font families that are currently loaded. As screen fonts - * are loaded, this list grows to hold information about what characters - * exist in each font family. + * Finding fonts by name. */ -static FontFamily *fontFamilyList = NULL; +static const MacFontFamily *FindFontFamilyOrAlias(const char *name); +static const MacFontFamily *FindFontFamilyOrAliasOrFallback(const char *name); /* - * Information cached about the system at startup time. + * Doing interesting things with font families and fonts. */ -static FontNameMap *gFontNameMap = NULL; -static GWorldPtr gWorld = NULL; +static void InitFontFamilies(void); +static OSStatus GetFontFamilyName(FMFontFamily fontFamily, char *name, + int numBytes); /* - * The names for our "native" fonts. + * Accessor functions and internal utilities for the font family list. */ -#define SYSTEMFONT_NAME "system" -#define APPLFONT_NAME "application" -#define MENUITEMFONT_NAME "menu" +static const MacFontFamily *AddFontFamily(const char *name, + FMFontFamily familyId); +static const MacFontFamily *FindFontFamily(const char *name); +static Tcl_Obj *EnumFontFamilies(void); -/* - * Procedures used only in this file. - */ +static OSStatus FontFamilyEnumCallback(ATSFontFamilyRef family, void *refCon); +static void SortFontFamilies(void); +static int CompareFontFamilies(const void *vp1, const void *vp2); +static const char *AddString(const char *in); -static FontFamily * AllocFontFamily(const MacFont *fontPtr, int family); -static SubFont * CanUseFallback(MacFont *fontPtr, const char *fallbackName, int ch, SubFont **fixSubFontPtrPtr); -static SubFont * CanUseFallbackWithAliases(MacFont *fontPtr, const char *faceName, int ch, Tcl_DString *nameTriedPtr, SubFont **fixSubFontPtrPtr); -static SubFont * FindSubFontForChar(MacFont *fontPtr, int ch, SubFont **fixSubFontPtrPtr); -static void FontMapInsert(SubFont *subFontPtr, int ch); -static void FontMapLoadPage(SubFont *subFontPtr, int row); -static int FontMapLookup(SubFont *subFontPtr, int ch); -static void FreeFontFamily(FontFamily *familyPtr); -static void InitFont(Tk_Window tkwin, int family, unsigned char *familyName, int size, int style, MacFont *fontPtr); -static void InitSubFont(const MacFont *fontPtr, int family, SubFont *subFontPtr); -static void MultiFontDrawText(MacFont *fontPtr, const char *source, int numBytes, int x, int y); -static void ReleaseFont(MacFont *fontPtr); -static void ReleaseSubFont(SubFont *subFontPtr); -static int SeenName(const char *name, Tcl_DString *dsPtr); - -static const char * BreakLine(FontFamily *familyPtr, int flags, const char *source, int numBytes, int *widthPtr); -static int GetFamilyNum(const char *faceName, short *familyPtr); -static int GetFamilyOrAliasNum(const char *faceName, short *familyPtr); -static Tcl_Encoding GetFontEncoding(int faceNum, int allowSymbol, int *isSymbolPtr); -static Tk_Uid GetUtfFaceName(StringPtr faceNameStr); static OSStatus GetThemeFontAndFamily(const ThemeFontID themeFontId, FMFontFamily *fontFamily, unsigned char *fontName, SInt16 *fontSize, Style *fontStyle); +static void InitSystemFonts(TkMainInfo *mainPtr); +static int CreateNamedSystemFont(Tcl_Interp *interp, Tk_Window tkwin, + const char* name, TkFontAttributes *faPtr); /* @@ -272,7 +275,7 @@ static OSStatus GetThemeFontAndFamily(const ThemeFontID themeFontId, * None. * * Side effects: - * See comments below. + * Initialization of variables local to this file. * *------------------------------------------------------------------------- */ @@ -281,107 +284,104 @@ void TkpFontPkgInit( TkMainInfo *mainPtr) /* The application being created. */ { - FMFontFamilyIterator fontFamilyIterator; - FMFontFamily fontFamily; - FontNameMap *tmpFontNameMap, *newFontNameMap, *mapPtr; - int i, j, numFonts, fontMapOffset, isSymbol; - Str255 nativeName; - Tcl_DString ds; - Tcl_Encoding encoding; - Tcl_Encoding *encodings; - - if (gWorld == NULL) { - Rect rect = {0, 0, 1, 1}; + InitFontFamilies(); + InitSystemFonts(mainPtr); - SetFractEnable(0); - /* - * Used for saving and restoring state while drawing and measuring. - */ - if (ChkErr(NewGWorld, &gWorld, 32, &rect, NULL, NULL, 0 -#ifdef __LITTLE_ENDIAN__ - | kNativeEndianPixMap +#if TK_MAC_COALESCE_LINE + Tcl_DStringInit(¤tLine); #endif - ) != noErr) { - Tcl_Panic("TkpFontPkgInit: NewGWorld failed"); - } - /* - * The name of each font is stored in the encoding of that font. - * How would we translate a name from UTF-8 into the native encoding - * of the font unless we knew the encoding of that font? We can't. - * So, precompute the UTF-8 and native names of all fonts on the - * system. The when the user asks for font by its UTF-8 name, we - * lookup the name in that table and really ask for the font by its - * native name. Any unknown UTF-8 names will be mapped to the system - * font. - */ - FMCreateFontFamilyIterator(NULL, NULL, kFMDefaultOptions, &fontFamilyIterator); - numFonts = 0; - while (FMGetNextFontFamily(&fontFamilyIterator, &fontFamily) != kFMIterationCompleted) { - numFonts++; - } - tmpFontNameMap = (FontNameMap *) ckalloc(sizeof(FontNameMap) * numFonts); - encodings = (Tcl_Encoding *) ckalloc(sizeof(Tcl_Encoding) * numFonts); - mapPtr = tmpFontNameMap; - FMResetFontFamilyIterator(NULL, NULL, kFMDefaultOptions, &fontFamilyIterator); - i = 0; - while (FMGetNextFontFamily(&fontFamilyIterator, &fontFamily) != kFMIterationCompleted) { - mapPtr->faceNum = fontFamily; - encodings[i] = GetFontEncoding(mapPtr->faceNum, 0, &isSymbol); - FMGetFontFamilyName(fontFamily, nativeName ); - Tcl_ExternalToUtfDString(encodings[i], StrBody(nativeName), StrLength(nativeName), &ds); - mapPtr->utfName = Tk_GetUid(Tcl_DStringValue(&ds)); - mapPtr->nativeName = (StringPtr) ckalloc(StrLength(nativeName) + 1); - memcpy(mapPtr->nativeName, nativeName, StrLength(nativeName) + 1); - Tcl_DStringFree(&ds); - mapPtr++; - i++; - } - FMDisposeFontFamilyIterator(&fontFamilyIterator); +} + +/* + *------------------------------------------------------------------------- + * + * InitSystemFonts -- + * + * Initialize named system fonts. + * + * Results: + * + * None. + * + * Side effects: + * + * None. + * + *------------------------------------------------------------------------- + */ - /* - * Reorder FontNameMap so fonts with the preferred encodings are at - * the front of the list. The relative order of fonts that all have - * the same encoding is preserved. Fonts with unknown encodings get - * stuck at the end. - */ - newFontNameMap = (FontNameMap *) ckalloc(sizeof(FontNameMap) * (numFonts + 1)); - fontMapOffset = 0; - for (i = 0; encodingList[i] != NULL; i++) { - encoding = Tcl_GetEncoding(NULL, encodingList[i]); - if (encoding == NULL) { - continue; - } - for (j = 0; j < numFonts; j++) { - if (encodings[j] == encoding) { - newFontNameMap[fontMapOffset] = tmpFontNameMap[j]; - fontMapOffset++; - Tcl_FreeEncoding(encodings[j]); - tmpFontNameMap[j].utfName = NULL; - } +static void +InitSystemFonts( + TkMainInfo *mainPtr) +{ + Tcl_Interp *interp = mainPtr->interp; + Tk_Window tkwin = (Tk_Window) mainPtr->winPtr; + const struct SystemFontMapEntry *systemFont = systemFontMap; + TkFontAttributes fa; + + /* force this for now */ + if (!mainPtr->winPtr->mainPtr) { + mainPtr->winPtr->mainPtr = mainPtr; + } + TkInitFontAttributes(&fa); + while (systemFont->systemName) { + Str255 fontName; + SInt16 fontSize; + Style fontStyle; + + if (GetThemeFont(systemFont->id, smSystemScript, fontName, + &fontSize, &fontStyle) == noErr) { + CopyPascalStringToC(fontName, (char*)fontName); + fa.family = Tk_GetUid((char*)fontName); + fa.size = fontSize; + fa.weight = (fontStyle & bold) ? TK_FW_BOLD : TK_FW_NORMAL; + fa.slant = (fontStyle & italic) ? TK_FS_ITALIC : TK_FS_ROMAN; + fa.underline = ((fontStyle & underline) != 0); + CreateNamedSystemFont(interp, tkwin, systemFont->systemName, &fa); + if (systemFont->tkName) { + CreateNamedSystemFont(interp, tkwin, systemFont->tkName, &fa); } - Tcl_FreeEncoding(encoding); - } - for (i = 0; i < numFonts; i++) { - if (tmpFontNameMap[i].utfName != NULL) { - newFontNameMap[fontMapOffset] = tmpFontNameMap[i]; - fontMapOffset++; - Tcl_FreeEncoding(encodings[i]); + if (systemFont->tkName1) { + CreateNamedSystemFont(interp, tkwin, systemFont->tkName1, &fa); } } - if (fontMapOffset != numFonts) { - Tcl_Panic("TkpFontPkgInit: unexpected number of fonts"); - } - - mapPtr = &newFontNameMap[numFonts]; - mapPtr->utfName = NULL; - mapPtr->nativeName = NULL; - mapPtr->faceNum = 0; - - ckfree((char *) tmpFontNameMap); - ckfree((char *) encodings); - - gFontNameMap = newFontNameMap; + systemFont++; } + fa.family = Tk_GetUid("monaco"); + fa.size = 11; + fa.weight = TK_FW_NORMAL; + fa.slant = TK_FS_ROMAN; + fa.underline = 0; + CreateNamedSystemFont(interp, tkwin, "TkFixedFont", &fa); +} + +/* + *------------------------------------------------------------------------- + * + * CreateNamedSystemFont -- + * + * Register a system font with the Tk named font mechanism. + * + * Results: + * + * Result from TkCreateNamedFont(). + * + * Side effects: + * + * A new named font is added to the Tk font registry. + * + *------------------------------------------------------------------------- + */ + +static int +CreateNamedSystemFont( + Tcl_Interp *interp, + Tk_Window tkwin, + const char* name, + TkFontAttributes *faPtr) +{ + TkDeleteNamedFont(NULL, tkwin, name); + return TkCreateNamedFont(interp, tkwin, name, faPtr); } /* @@ -445,14 +445,14 @@ GetThemeFontAndFamily( TkFont * TkpGetNativeFont( Tk_Window tkwin, /* For display where font will be used. */ - CONST char *name) /* Platform-specific font name. */ + const char *name) /* Platform-specific font name. */ { ThemeFontID themeFontId; FMFontFamily fontFamily; Str255 fontName; SInt16 fontSize; Style fontStyle; - MacFont * fontPtr; + MacFont *fontPtr; if (strcmp(name, SYSTEMFONT_NAME) == 0) { themeFontId = kThemeSystemFont; @@ -467,9 +467,10 @@ TkpGetNativeFont( &fontStyle) != noErr) { return NULL; } + CopyPascalStringToC(fontName, (char*)fontName); fontPtr = (MacFont *) ckalloc(sizeof(MacFont)); - InitFont(tkwin, fontFamily, fontName, fontSize, fontStyle, fontPtr); + InitFont(fontFamily, (char*)fontName, fontSize, fontStyle, fontPtr); return (TkFont *) fontPtr; } @@ -512,56 +513,35 @@ TkpGetFontFromAttributes( * will be released. If NULL, a new TkFont * structure is allocated. */ Tk_Window tkwin, /* For display where font will be used. */ - CONST TkFontAttributes *faPtr) + const TkFontAttributes *faPtr) /* Set of attributes to match. */ { - short faceNum, style; - int i, j; - const char *faceName, *fallback; - char ***fallbacks; + short qdStyle; + FMFontFamily familyId; + const char *name; + const MacFontFamily *familyPtr; MacFont *fontPtr; - /* - * Algorithm to get the closest font to the one requested. - * - * try fontname - * try all aliases for fontname - * foreach fallback for fontname - * try the fallback - * try all aliases for the fallback - */ + familyId = GetAppFont(); + name = NULL; + qdStyle = 0; - faceNum = 0; - faceName = faPtr->family; - if (faceName != NULL) { - if (GetFamilyOrAliasNum(faceName, &faceNum) != 0) { - goto found; - } - fallbacks = TkFontGetFallbacks(); - for (i = 0; fallbacks[i] != NULL; i++) { - for (j = 0; (fallback = fallbacks[i][j]) != NULL; j++) { - if (strcasecmp(faceName, fallback) == 0) { - for (j = 0; (fallback = fallbacks[i][j]) != NULL; j++) { - if (GetFamilyOrAliasNum(fallback, &faceNum)) { - goto found; - } - } - } - break; - } + if (faPtr->family != NULL) { + familyPtr = FindFontFamilyOrAliasOrFallback(faPtr->family); + if (familyPtr != NULL) { + name = familyPtr->name; + familyId = familyPtr->familyId; } } -found: - style = 0; if (faPtr->weight != TK_FW_NORMAL) { - style |= bold; + qdStyle |= bold; } if (faPtr->slant != TK_FS_ROMAN) { - style |= italic; + qdStyle |= italic; } if (faPtr->underline) { - style |= underline; + qdStyle |= underline; } if (tkFontPtr == NULL) { fontPtr = (MacFont *) ckalloc(sizeof(MacFont)); @@ -569,7 +549,8 @@ found: fontPtr = (MacFont *) tkFontPtr; ReleaseFont(fontPtr); } - InitFont(tkwin, faceNum, NULL, faPtr->size, style, fontPtr); + InitFont(familyId, name, TkFontGetPoints(tkwin, faPtr->size), + qdStyle, fontPtr); return (TkFont *) fontPtr; } @@ -623,14 +604,7 @@ TkpGetFontFamilies( Tcl_Interp *interp, /* Interp to hold result. */ Tk_Window tkwin) /* For display to query. */ { - FontNameMap *mapPtr; - Tcl_Obj *resultPtr, *strPtr; - - resultPtr = Tcl_GetObjResult(interp); - for (mapPtr = gFontNameMap; mapPtr->utfName != NULL; mapPtr++) { - strPtr = Tcl_NewStringObj(mapPtr->utfName, -1); - Tcl_ListObjAppendElement(NULL, resultPtr, strPtr); - } + Tcl_SetObjResult(interp, EnumFontFamilies()); } /* @@ -656,31 +630,168 @@ TkpGetSubFonts( Tcl_Interp *interp, /* Interp to hold result. */ Tk_Font tkfont) /* Font object to query. */ { - int i; - Tcl_Obj *resultPtr, *strPtr; - MacFont *fontPtr; - FontFamily *familyPtr; - Str255 nativeName; + /* We don't know much about our fallback fonts, ATSU does all that for + * us. We could use ATSUMatchFont to implement this function. But as + * the information is only used for testing, such an effort seems not + * very useful. */ +} + +/* + *---------------------------------------------------------------------- + * + * TkpGetFontAttrsForChar -- + * + * Retrieve the font attributes of the actual font used to render a + * given character. + * + * Results: + * None. + * + * Side effects: + * The font attributes are stored in *faPtr. + * + *---------------------------------------------------------------------- + */ + +void +TkpGetFontAttrsForChar( + Tk_Window tkwin, /* Window on the font's display */ + Tk_Font tkfont, /* Font to query */ + Tcl_UniChar c, /* Character of interest */ + TkFontAttributes* faPtr) /* Output: Font attributes */ +{ + const MacFont * fontPtr = (const MacFont *) tkfont; + UniChar uchar = c; + TkMacOSXDrawingContext drawingContext; + OSStatus err; + ATSUFontID fontId; + UniCharArrayOffset changedOffset; + UniCharCount changedLength; - resultPtr = Tcl_GetObjResult(interp); - fontPtr = (MacFont *) tkfont; - for (i = 0; i < fontPtr->numSubFonts; i++) { - familyPtr = fontPtr->subFontArray[i].familyPtr; - GetFontName(familyPtr->faceNum, nativeName); - strPtr = Tcl_NewStringObj(GetUtfFaceName(nativeName), -1); - Tcl_ListObjAppendElement(NULL, resultPtr, strPtr); + /* + * Most of the attributes are just copied from the base font. This + * assumes that all fonts can have all attributes. + */ + + *faPtr = fontPtr->font.fa; + + /* + * But the name of the actual font may still differ, so we activate the + * string as an ATSU layout and ask ATSU about the fallback. + */ + if (!TkMacOSXSetupDrawingContext(Tk_WindowId(tkwin), NULL, 1, + &drawingContext)) { + Tcl_Panic("TkpGetFontAttrsForChar: drawingContext not setup"); + } + + LayoutSetString(fontPtr, &drawingContext, &uchar, 1); + + fontId = fontPtr->atsuFontId; + err = ATSUMatchFontsToText( + fontPtr->atsuLayout, 0, 1, + &fontId, &changedOffset, &changedLength); + if (err != kATSUFontsMatched && err != noErr) { + TkMacOSXDbgMsg("Can't match \\u%04X", (unsigned) c); + } + + if (err == kATSUFontsMatched) { + /* + * A fallback was used and the actual font is in fontId. Determine + * the name. + */ + + FMFontFamily fontFamilyId; + FMFontStyle fontStyle; + int i; + + err = ChkErr(FMGetFontFamilyInstanceFromFont, fontId, &fontFamilyId, + &fontStyle); + if (err == noErr) { + /* + * Find the canonical name in our global list. + */ + + for (i=0; i<familyListMaxValid; ++i) { + if (fontFamilyId == familyList[i].familyId) { + faPtr->family = familyList[i].name; + break; + } + } + if (i >= familyListMaxValid) { + TkMacOSXDbgMsg("Can't find font %d for \\u%04X", fontFamilyId, + (unsigned) c); + } + } } + + TkMacOSXRestoreDrawingContext(&drawingContext); } /* *--------------------------------------------------------------------------- * - * Tk_MeasureChars -- + * Tk_MeasureChars -- + * + * Determine the number of characters from the string that will fit in + * the given horizontal span. The measurement is done under the + * assumption that Tk_DrawChars() will be used to actually display the + * characters. * - * Determine the number of characters from the string that will fit - * in the given horizontal span. The measurement is done under the - * assumption that Tk_DrawChars() will be used to actually display - * the characters. + * With ATSUI we need the line context to do this right, so we have the + * actual implementation in TkpMeasureCharsInContext(). + * + * Results: + * The return value is the number of bytes from source that fit into the + * span that extends from 0 to maxLength. *lengthPtr is filled with the + * x-coordinate of the right edge of the last character that did fit. + * + * Side effects: + * None. + * + * Todo: + * Effects of the "flags" parameter are untested. + * + *--------------------------------------------------------------------------- + */ + +int +Tk_MeasureChars( + Tk_Font tkfont, /* Font in which characters will be drawn. */ + const char *source, /* UTF-8 string to be displayed. Need not be + * '\0' terminated. */ + int numBytes, /* Maximum number of bytes to consider from + * source string. */ + int maxLength, /* If >= 0, maxLength specifies the longest + * permissible line length; don't consider any + * character that would cross this x-position. + * If < 0, then line length is unbounded and + * the flags argument is ignored. */ + int flags, /* Various flag bits OR-ed together: + * TK_PARTIAL_OK means include the last char + * which only partially fit on this line. + * TK_WHOLE_WORDS means stop on a word + * boundary, if possible. TK_AT_LEAST_ONE + * means return at least one character even if + * no characters fit. */ + int *lengthPtr) /* Filled with x-location just after the + * terminating character. */ +{ + return TkpMeasureCharsInContext(tkfont, source, numBytes, 0, numBytes, + maxLength, flags, lengthPtr); +} + +/* + *--------------------------------------------------------------------------- + * + * TkpMeasureCharsInContext -- + * + * Determine the number of bytes from the string that will fit in the + * given horizontal span. The measurement is done under the assumption + * that TkpDrawCharsInContext() will be used to actually display the + * characters. + * + * This one is almost the same as Tk_MeasureChars(), but with access to + * all the characters on the line for context. * * Results: * The return value is the number of bytes from source that @@ -695,150 +806,292 @@ TkpGetSubFonts( */ int -Tk_MeasureChars( +TkpMeasureCharsInContext( Tk_Font tkfont, /* Font in which characters will be drawn. */ - CONST char *source, /* UTF-8 string to be displayed. Need not be + const char * source, /* UTF-8 string to be displayed. Need not be * '\0' terminated. */ - int numBytes, /* Maximum number of bytes to consider - * from source string. */ + int numBytes, /* Maximum number of bytes to consider from + * source string in all. */ + int rangeStart, /* Index of first byte to measure. */ + int rangeLength, /* Length of range to measure in bytes. */ int maxLength, /* If >= 0, maxLength specifies the longest * permissible line length; don't consider any - * character that would cross this - * x-position. If < 0, then line length is - * unbounded and the flags argument is - * ignored. */ + * character that would cross this x-position. + * If < 0, then line length is unbounded and + * the flags argument is ignored. */ int flags, /* Various flag bits OR-ed together: * TK_PARTIAL_OK means include the last char - * which only partially fit on this line. + * which only partially fits on this line. * TK_WHOLE_WORDS means stop on a word - * boundary, if possible. - * TK_AT_LEAST_ONE means return at least one - * character even if no characters fit. */ + * boundary, if possible. TK_AT_LEAST_ONE + * means return at least one character even + * if no characters fit. If TK_WHOLE_WORDS + * and TK_AT_LEAST_ONE are set and the first + * word doesn't fit, we return at least one + * character or whatever characters fit into + * maxLength. TK_ISOLATE_END means that the + * last character should not be considered in + * context with the rest of the string (used + * for breaking lines). */ int *lengthPtr) /* Filled with x-location just after the * terminating character. */ { - MacFont *fontPtr; - SubFont *thisSubFontPtr, *lastSubFontPtr; - CGrafPtr savePort; - Boolean portChanged; - int curX, curByte; + const MacFont *fontPtr = (const MacFont *) tkfont; + int curX = -1, curByte = 0; + UniChar *uchars; + int ulen; + UniCharArrayOffset urstart, urlen, urend; + Tcl_DString ucharBuffer; + int forceCharacterMode = 0; /* - * According to "Inside Macintosh: Text", the Macintosh may - * automatically substitute - * ligatures or context-sensitive presentation forms when - * measuring/displaying text within a font run. We cannot safely - * measure individual characters and add up the widths w/o errors. - * However, if we convert a range of text from UTF-8 to, say, - * Shift-JIS, and get the offset into the Shift-JIS string as to - * where a word or line break would occur, then can we map that - * number back to UTF-8? + * Sanity checks. */ - fontPtr = (MacFont *) tkfont; + if (rangeStart < 0 || (rangeStart+rangeLength) > numBytes) { + TkMacOSXDbgMsg("Bad parameters"); + *lengthPtr = 0; + return 0; + } - portChanged = QDSwapPort(gWorld, &savePort); + /* + * Get simple no-brainers out of the way. + */ - TextSize(fontPtr->size); - TextFace(fontPtr->style); + if (rangeLength == 0 || (maxLength == 0 && !(flags & TK_AT_LEAST_ONE))) { + *lengthPtr = 0; + return 0; + } - lastSubFontPtr = &fontPtr->subFontArray[0]; + Tcl_DStringInit(&ucharBuffer); + uchars = Tcl_UtfToUniCharDString(source, numBytes, &ucharBuffer); + ulen = Tcl_DStringLength(&ucharBuffer) / sizeof(Tcl_UniChar); + LayoutSetString(fontPtr, NULL, uchars, ulen); - if (numBytes == 0) { - curX = 0; - curByte = 0; - } else if (maxLength < 0) { - const char *p, *end, *next; - Tcl_UniChar ch; - FontFamily *familyPtr; - Tcl_DString runString; + urstart = Tcl_NumUtfChars(source, rangeStart); + urlen = Tcl_NumUtfChars(source+rangeStart,rangeLength); + urend = urstart + urlen; + + if (maxLength < 0) { + curX = MeasureStringWidth(fontPtr, urstart, urend); + curByte = rangeLength; + } else { + UniCharArrayOffset offset = 0; + OSStatus err; /* - * A three step process: - * 1. Find a contiguous range of characters that can all be - * represented by a single screen font. - * 2. Convert those chars to the encoding of that font. - * 3. Measure converted chars. + * Have some upper limit on the size actually used. */ - curX = 0; - end = source + numBytes; - for (p = source; p < end; ) { - next = p + Tcl_UtfToUniChar(p, &ch); - thisSubFontPtr = FindSubFontForChar(fontPtr, ch, &lastSubFontPtr); - if (thisSubFontPtr != lastSubFontPtr) { - familyPtr = lastSubFontPtr->familyPtr; - TextFont(familyPtr->faceNum); - Tcl_UtfToExternalDString(familyPtr->encoding, source, - p - source, &runString); - curX += TextWidth(Tcl_DStringValue(&runString), 0, - Tcl_DStringLength(&runString)); - Tcl_DStringFree(&runString); - lastSubFontPtr = thisSubFontPtr; - source = p; + if (maxLength > 32767) { + maxLength = 32767; + } + + offset = urstart; + err = noErr; + + if (maxLength > 1) { + /* + * Let the system do some work by calculating a line break. + * + * Somehow ATSUBreakLine seems to assume that it needs at least + * one pixel padding. So we add one to the limit. Note also + * that ATSUBreakLine sometimes runs into an endless loop when + * the third parameter is equal or less than IntToFixed(2), so we + * need at least IntToFixed(3) (at least that's the current state + * of my knowledge). + */ + + err = ATSUBreakLine(fontPtr->atsuLayout, urstart, + IntToFixed(maxLength+1), false, /* !iUseAsSoftLineBreak */ + &offset); + + /* + * There is no way to signal an error from this routine, so we + * use predefined offset=urstart and otherwise ignore the + * possibility. + */ + + if ((err != noErr) && (err != kATSULineBreakInWord)) { + TkMacOSXDbgMsg("ATSUBreakLine failed: %ld for '%.*s'", err, + rangeLength, source+rangeStart); + } + +#ifdef TK_MAC_DEBUG_FONTS + TkMacOSXDbgMsg("measure: '%.*s', break offset=%ld, errcode=%ld", + rangeLength, source+rangeStart, offset, err); +#endif + + /* + * ATSUBreakLine includes the whitespace that separates words, + * but we don't want that. Besides, ATSUBreakLine thinks that + * spaces don't occupy pixels at the end of the break, which is + * also something we like to decide for ourself. + */ + + while ((offset > urstart) && (uchars[offset-1] == ' ')) { + offset--; } - p = next; } - familyPtr = lastSubFontPtr->familyPtr; - TextFont(familyPtr->faceNum); - Tcl_UtfToExternalDString(familyPtr->encoding, source, p - source, - &runString); - curX += TextWidth(Tcl_DStringValue(&runString), 0, - Tcl_DStringLength(&runString)); - Tcl_DStringFree(&runString); - curByte = numBytes; - } else { - const char *p, *end, *next, *sourceOrig; - int widthLeft; - Tcl_UniChar ch; - const char *rest = NULL; /* - * How many chars will fit in the space allotted? + * Fix up left-overs for the TK_WHOLE_WORDS case. */ - if (maxLength > 32767) { - maxLength = 32767; + if (flags & TK_WHOLE_WORDS) { + if ((flags & TK_AT_LEAST_ONE) && ((offset == urstart) + || ((offset != urend) && (uchars[offset] != ' ')))) { + /* + * With TK_AT_LEAST_ONE, if we are the the start of the + * range, we need to add at least one character. If we are + * not at the end of a word, we must be in the middle of the + * first word still and we want to just use what we have so + * far. In both cases we still need to find the right + * character boundary, so we set a flag that gets us into the + * code for character mode below. + */ + + forceCharacterMode = 1; + + } else { + /* + * If we are not at the end of a word, we must be in the + * middle of the first word still. Return 0. + */ + + if ((offset != urend) && (uchars[offset] != ' ')) { + offset = urstart; + curX = 0; + } + } } - widthLeft = maxLength; - sourceOrig = source; - end = source + numBytes; - for (p = source; p < end; p = next) { - next = p + Tcl_UtfToUniChar(p, &ch); - thisSubFontPtr = FindSubFontForChar(fontPtr, ch, &lastSubFontPtr); - if (thisSubFontPtr != lastSubFontPtr) { - if (p > source) { - rest = BreakLine(lastSubFontPtr->familyPtr, flags, source, - p - source, &widthLeft); - flags &= ~TK_AT_LEAST_ONE; - if (rest != NULL) { - p = source; + if (offset > urend) { + offset = urend; + } + + /* + * If "flags" says that we don't actually want a word break, we need + * to find the next character break ourself, as ATSUBreakLine will + * only give us word breaks. Do a simple linear search. + * + * Even do this, if ATSUBreakLine returned kATSULineBreakInWord, + * because we have not accounted correctly for all of the flags yet, + * like TK_AT_LEAST_ONE. + */ + + if ((!(flags & TK_WHOLE_WORDS) || forceCharacterMode) && (offset <= urend)) { + UniCharArrayOffset lastOffset = offset; + UniCharArrayOffset nextoffset; + int lastX = -1; + int wantonemorechar = -1; /* undecided */ + + while (offset <= urend) { + if (flags & TK_ISOLATE_END) { + LayoutSetString(fontPtr, NULL, uchars, offset); + } + curX = MeasureStringWidth(fontPtr, urstart, offset); + +#ifdef TK_MAC_DEBUG_FONTS + TkMacOSXDbgMsg("measure: '%.*s', try until=%ld, width=%d", + rangeLength, source+rangeStart, offset, curX); +#endif + + if (curX > maxLength) { + /* + * Even if we are over the limit, we may want another + * character in some situations. Than we keep looking + * for one more character. + */ + + if (wantonemorechar == -1) { + wantonemorechar = ((flags & TK_AT_LEAST_ONE) && + (lastOffset == urstart)) || + ((flags & TK_PARTIAL_OK) && + (lastX != maxLength)); + if (!wantonemorechar) { + break; + } + lastX = curX; + } + + /* + * There may belong combining marks to this character. + * Wait for a new curX to collect them all. + */ + + if (lastX != curX) { break; } } - lastSubFontPtr = thisSubFontPtr; - source = p; + + /* + * Save this position, so we can come back to it. + */ + + lastX = curX; + lastOffset = offset; + + /* + * Increment offset by one character, taking combining marks + * into account. + */ + + if (offset >= urend) { + break; + } + nextoffset = 0; + if (flags & TK_ISOLATE_END) { + LayoutSetString(fontPtr, NULL, uchars, ulen); + } + err = ChkErr(ATSUNextCursorPosition, fontPtr->atsuLayout, + offset, kATSUByCluster, &nextoffset); + if (err != noErr) { + break; + } + if (nextoffset <= offset) { +#ifdef TK_MAC_DEBUG_FONTS + TkMacOSXDbgMsg("ATSUNextCursorPosition: Can't move further" + " (shouldn't happen, bad data?)"); +#endif + break; + } + + offset = nextoffset; } - } - if (p > source) { - rest = BreakLine(lastSubFontPtr->familyPtr, flags, source, p - source, - &widthLeft); + /* + * We have overshot one character, so backup one position. + */ + + curX = lastX; + offset = lastOffset; } - if (rest == NULL) { - curByte = numBytes; - } else { - curByte = rest - sourceOrig; + if (curX < 0) { + if (flags & TK_ISOLATE_END) { + LayoutSetString(fontPtr, NULL, uchars, offset); + } + curX = MeasureStringWidth(fontPtr, urstart, offset); } - curX = maxLength - widthLeft; - } - if (portChanged) { - QDSwapPort(savePort, NULL); + curByte = Tcl_UtfAtIndex(source, offset) - source; + curByte -= rangeStart; } + Tcl_DStringFree(&ucharBuffer); + +#ifdef TK_MAC_DEBUG_FONTS + TkMacOSXDbgMsg("measure: '%.*s', maxLength=%d, flags=%s%s%s%s " + "-> width=%d, bytes=%d", + rangeLength, source+rangeStart, maxLength, + flags & TK_PARTIAL_OK ? "partialOk " : "", + flags & TK_WHOLE_WORDS ? "wholeWords " : "", + flags & TK_AT_LEAST_ONE ? "atLeastOne " : "", + flags & TK_ISOLATE_END ? "isolateEnd " : "", + curX, curByte); +#endif + *lengthPtr = curX; return curByte; } @@ -846,151 +1099,51 @@ Tk_MeasureChars( /* *--------------------------------------------------------------------------- * - * BreakLine -- + * Tk_DrawChars -- + * + * Draw a string of characters on the screen. * - * Determine where the given line of text should be broken so that it - * fits in the specified range. Before calling this function, the - * font values and graphics port must be set. + * With ATSUI we need the line context to do this right, so we have the + * actual implementation in TkpDrawCharsInContext(). * * Results: - * The return value is NULL if the specified range is larger that the - * space the text needs, and *widthLeftPtr is filled with how much - * space is left in the range after measuring the whole text buffer. - * Otherwise, the return value is a pointer into the text buffer that - * indicates where the line should be broken (up to, but not including - * that character), and *widthLeftPtr is filled with how much space is - * left in the range after measuring up to that character. + * None. * * Side effects: - * None. + * Information gets drawn on the screen. * *--------------------------------------------------------------------------- */ -static const char * -BreakLine( - FontFamily *familyPtr, /* FontFamily that describes the font values - * that are already selected into the graphics - * port. */ - int flags, /* Various flag bits OR-ed together: - * TK_PARTIAL_OK means include the last char - * which only partially fit on this line. - * TK_WHOLE_WORDS means stop on a word - * boundary, if possible. - * TK_AT_LEAST_ONE means return at least one - * character even if no characters fit. */ - const char *source, /* UTF-8 string to be displayed. Need not be - * '\0' terminated. */ - int numBytes, /* Maximum number of bytes to consider - * from source string. */ - int *widthLeftPtr) /* On input, specifies size of range into - * which characters from source buffer should - * be fit. On output, filled with how much - * space is left after fitting as many - * characters as possible into the range. - * Result may be negative if TK_AT_LEAST_ONE - * was specified in the flags argument. */ +void +Tk_DrawChars( + Display *display, /* Display on which to draw. */ + Drawable drawable, /* Window or pixmap in which to draw. */ + GC gc, /* Graphics context for drawing characters. */ + Tk_Font tkfont, /* Font in which characters will be drawn; must + * be the same as font used in GC. */ + const char *source, /* UTF-8 string to be displayed. Need not be + * '\0' terminated. All Tk meta-characters + * (tabs, control characters, and newlines) + * should be stripped out of the string that + * is passed to this function. If they are not + * stripped out, they will be displayed as + * regular printing characters. */ + int numBytes, /* Number of bytes in string. */ + int x, int y) /* Coordinates at which to place origin of the + * string when drawing. */ { - Fixed pixelWidth, widthLeft; - StyledLineBreakCode breakCode; - Tcl_DString runString; - long textOffset; - Boolean leadingEdge; - Point point; - int charOffset, thisCharWasDoubleByte; - char *p, *end, *typeTable; - - TextFont(familyPtr->faceNum); - Tcl_UtfToExternalDString(familyPtr->encoding, source, numBytes, - &runString); - pixelWidth = IntToFixed(*widthLeftPtr) + 1; - if (flags & TK_WHOLE_WORDS) { - textOffset = (flags & TK_AT_LEAST_ONE); - widthLeft = pixelWidth; - breakCode = StyledLineBreak(Tcl_DStringValue(&runString), - Tcl_DStringLength(&runString), 0, Tcl_DStringLength(&runString), - 0, &widthLeft, &textOffset); - if (breakCode != smBreakOverflow) { - /* - * StyledLineBreak includes all the space characters at the end of - * line that we want to suppress. - */ - - textOffset = VisibleLength(Tcl_DStringValue(&runString), textOffset); - goto getoffset; - } - } else { - point.v = 1; - point.h = 1; - textOffset = PixelToChar(Tcl_DStringValue(&runString), - Tcl_DStringLength(&runString), 0, pixelWidth, &leadingEdge, - &widthLeft, smOnlyStyleRun, point, point); - if (FixedToInt(widthLeft) < 0) { - goto getoffset; - } - } - *widthLeftPtr = FixedToInt(widthLeft); - Tcl_DStringFree(&runString); - return NULL; - - /* - * The conversion routine that converts UTF-8 to the target encoding - * must map one UTF-8 character to exactly one encoding-specific - * character, so that the following algorithm works: - * - * 1. Get byte offset of where line should be broken. - * 2. Get char offset corresponding to that byte offset. - * 3. Map that char offset to byte offset in UTF-8 string. - */ - - getoffset: - thisCharWasDoubleByte = 0; - if (familyPtr->isMultiByteFont == 0) { - charOffset = textOffset; - } else { - charOffset = 0; - typeTable = familyPtr->typeTable; - - p = Tcl_DStringValue(&runString); - end = p + textOffset; - thisCharWasDoubleByte = typeTable[*((unsigned char *) p)]; - for ( ; p < end; p++) { - thisCharWasDoubleByte = typeTable[*((unsigned char *) p)]; - p += thisCharWasDoubleByte; - charOffset++; - } - } - - if ((flags & TK_WHOLE_WORDS) == 0) { - if ((flags & TK_PARTIAL_OK) && (leadingEdge != 0)) { - textOffset += thisCharWasDoubleByte; - textOffset++; - charOffset++; - } else if (((flags & TK_PARTIAL_OK) == 0) && (leadingEdge == 0)) { - textOffset -= thisCharWasDoubleByte; - textOffset--; - charOffset--; - } - } - if ((textOffset == 0) && (Tcl_DStringLength(&runString) > 0) - && (flags & TK_AT_LEAST_ONE)) { - p = Tcl_DStringValue(&runString); - textOffset += familyPtr->typeTable[*((unsigned char *) p)]; - textOffset++; - charOffset++; - } - *widthLeftPtr = FixedToInt(pixelWidth) - - TextWidth(Tcl_DStringValue(&runString), 0, textOffset); - Tcl_DStringFree(&runString); - return Tcl_UtfAtIndex(source, charOffset); + TkpDrawCharsInContext(display, drawable, gc, tkfont, source, numBytes, + 0, numBytes, x, y); } /* *--------------------------------------------------------------------------- * - * Tk_DrawChars -- + * TkpDrawCharsInContext -- * - * Draw a string of characters on the screen. + * Draw a string of characters on the screen like Tk_DrawChars(), with + * access to all the characters on the line for context. * * Results: * None. @@ -998,17 +1151,20 @@ BreakLine( * Side effects: * Information gets drawn on the screen. * + * Todo: + * Stippled text drawing. + * *--------------------------------------------------------------------------- */ void -Tk_DrawChars( +TkpDrawCharsInContext( Display *display, /* Display on which to draw. */ Drawable drawable, /* Window or pixmap in which to draw. */ GC gc, /* Graphics context for drawing characters. */ Tk_Font tkfont, /* Font in which characters will be drawn; must * be the same as font used in GC. */ - CONST char *source, /* UTF-8 string to be displayed. Need not be + const char * source, /* UTF-8 string to be displayed. Need not be * '\0' terminated. All Tk meta-characters * (tabs, control characters, and newlines) * should be stripped out of the string that @@ -1016,151 +1172,214 @@ Tk_DrawChars( * stripped out, they will be displayed as * regular printing characters. */ int numBytes, /* Number of bytes in string. */ + int rangeStart, /* Index of first byte to draw. */ + int rangeLength, /* Length of range to draw in bytes. */ int x, int y) /* Coordinates at which to place origin of the - * string when drawing. */ + * whole (not just the range) string when + * drawing. */ { + const MacFont * fontPtr = (const MacFont *) tkfont; MacDrawable *macWin = (MacDrawable *) drawable; - MacFont *fontPtr = (MacFont *) tkfont; + Fixed fx, fy; + int ulen, urstart, urlen; + const UniChar * uchars; + int lineOffset; TkMacOSXDrawingContext drawingContext; +#if !TK_MAC_COALESCE_LINE + Tcl_DString runString; +#endif - if (!TkMacOSXSetupDrawingContext(drawable, gc, 0, &drawingContext)) { + if (!TkMacOSXSetupDrawingContext(drawable, gc, tkMacOSXUseCGDrawing, + &drawingContext)) { return; } + #if 0 /* - * Stippled QD text drawing only kind of works and is ugly, so disable it - * for now: + * TODO: implement stippled text drawing */ + if ((gc->fill_style == FillStippled || gc->fill_style == FillOpaqueStippled) && gc->stipple != None) { - TkMacOSXDrawingContext pixmapDrawingContext; - BitMapPtr stippleMap; - Pixmap pixmap; - Pattern white; - Rect bounds = drawingContext.portBounds; - - OffsetRect(&bounds, macWin->xOff + x, 0); - stippleMap = TkMacOSXMakeStippleMap(drawable, gc->stipple); - pixmap = Tk_GetPixmap(display, drawable, - stippleMap->bounds.right, stippleMap->bounds.bottom, 0); - if (!TkMacOSXSetupDrawingContext(pixmap, gc, 0, - &pixmapDrawingContext)) { - return; - } - GetQDGlobalsWhite(&white); - FillRect(&stippleMap->bounds, &white); - MultiFontDrawText(fontPtr, source, numBytes, 0, macWin->yOff + y); - TkMacOSXRestoreDrawingContext(&pixmapDrawingContext); - CopyDeepMask(GetPortBitMapForCopyBits(TkMacOSXGetDrawablePort(pixmap)), - stippleMap, GetPortBitMapForCopyBits( - TkMacOSXGetDrawablePort(drawable)), &stippleMap->bounds, - &stippleMap->bounds, &bounds, srcOr, NULL); - - /* TODO: this doesn't work quite right - it does a blend. You can't - * draw white text when you have a stipple. - */ - - Tk_FreePixmap(display, pixmap); - ckfree(stippleMap->baseAddr); - ckfree((char *)stippleMap); - } else + #error Stippling not implemented + } #endif - { - MultiFontDrawText(fontPtr, source, numBytes, macWin->xOff + x, - macWin->yOff + y); + + x += macWin->xOff; + y += macWin->yOff; + /* Turn the y coordinate upside-down for Quarz drawing. */ + if (drawingContext.context) { + CGContextConcatCTM(drawingContext.context, CGAffineTransformMake(1.0, + 0.0, 0.0, -1.0, 0.0, drawingContext.portBounds.bottom - + drawingContext.portBounds.top)); + y = drawingContext.portBounds.bottom - + drawingContext.portBounds.top - y; } + fy = IntToFixed(y); + +#if TK_MAC_COALESCE_LINE + UpdateLineBuffer( + fontPtr, &drawingContext, source, numBytes, x, y, &lineOffset); + + fx = IntToFixed(currentLeft); + + uchars = (const Tcl_UniChar*) Tcl_DStringValue(¤tLine); + ulen = Tcl_DStringLength(¤tLine) / sizeof(uchars[0]); +#else + lineOffset = 0; + fx = IntToFixed(x); + + Tcl_DStringInit(&runString); + uchars = Tcl_UtfToUniCharDString(source, numBytes, &runString); + ulen = Tcl_DStringLength(&runString) / sizeof(uchars[0]); + + LayoutSetString(fontPtr, &drawingContext, uchars, ulen); +#endif + + urstart = Tcl_NumUtfChars(source, rangeStart); + urlen = Tcl_NumUtfChars(source+rangeStart,rangeLength); + + ChkErr(ATSUDrawText, fontPtr->atsuLayout, lineOffset+urstart, urlen, fx, + fy); + +#if !TK_MAC_COALESCE_LINE + Tcl_DStringFree(&runString); +#endif + TkMacOSXRestoreDrawingContext(&drawingContext); } /* - *------------------------------------------------------------------------- + *--------------------------------------------------------------------------- * - * MultiFontDrawText -- + * MeasureStringWidth -- * - * Helper function for Tk_DrawChars. Draws characters, using the - * various screen fonts in fontPtr to draw multilingual characters. - * Note: No bidirectional support. + * Low-level measuring of strings. * * Results: + * The width of the string in pixels. + * + * Side effects: * None. * + * Assumptions: + * fontPtr->atsuLayout is setup with the actual string data to measure. + * + *--------------------------------------------------------------------------- + */ +static int +MeasureStringWidth( + const MacFont *fontPtr, /* Contains font, ATSU layout and string data + * to measure. */ + int start, int end) /* Start and end positions to measure in that + * string. */ +{ + /* + * This implementation of measuring via ATSUGetGlyphBounds() does not + * quite conform with the specification given for [font measure]: + * + * The return value is the total width in pixels of text, not + * including the extra pixels used by highly exagerrated characters + * such as cursive "f". + * + * Instead the result of ATSUGetGlyphBounds() *does* include these + * "extra pixels". + */ + + ATSTrapezoid bounds; + ItemCount numBounds; + + if (end <= start) { + return 0; + } + + bounds.upperRight.x = bounds.upperLeft.x = 0; + ChkErr(ATSUGetGlyphBounds, fontPtr->atsuLayout, 0, 0, start, end-start, + kATSUseFractionalOrigins, 1, &bounds, &numBounds); +#ifdef TK_MAC_DEBUG_FONTS + if (numBounds < 1 || numBounds > 1) { + TkMacOSXDbgMsg("ATSUGetGlyphBounds: %s output", + numBounds < 1 ? "No " : "More"); + } +#endif + + return FixedToInt(bounds.upperRight.x - bounds.upperLeft.x); +} + +#if TK_MAC_COALESCE_LINE +/* + *------------------------------------------------------------------------- + * + * UpdateLineBuffer -- + * + * See the general dicussion of TK_MAC_COALESCE_LINE on the header + * pages. This function maintains the data for this feature. + * + * Results: + * + * The Tcl_UniChar string of the whole line as seen so far. + * * Side effects: - * Information gets drawn on the screen. - * Contents of fontPtr may be modified if more subfonts were loaded - * in order to draw all the multilingual characters in the given - * string. + * "*offset" is filled with the index of the first new character in + * "currentLine". The globals currentLine, currentY, currentLeft, + * currentRight and currentFontPtr are updated as necessary. + * + * The currentLine string is set as the current text in + * fontPtr->atsuLayout (see LayoutSetString()). * *------------------------------------------------------------------------- */ -static void -MultiFontDrawText( - MacFont *fontPtr, /* Contains set of fonts to use when drawing - * following string. */ - const char *source, /* Potentially multilingual UTF-8 string. */ - int numBytes, /* Length of string in bytes. */ - int x, int y) /* Coordinates at which to place origin * - * of string when drawing. */ +static const Tcl_UniChar * +UpdateLineBuffer( + const MacFont *fontPtr, /* The font to be used for the new piece of + * text. */ + const TkMacOSXDrawingContext *drawingContextPtr, + /* The Quarz drawing parameters. Needed for + * measuring the new piece. */ + const char *source, /* A new piece of line to be added. */ + int numBytes, /* Length of the new piece. */ + int x, int y, /* Position of the new piece in the window. */ + int *offset) /* Filled with the offset of the new piece in + * currentLine. */ { - SubFont *thisSubFontPtr, *lastSubFontPtr; - FontFamily *familyPtr; - Tcl_DString runString; - const char *p, *end, *next; - Tcl_UniChar ch; - - TextSize(fontPtr->size); - TextFace(fontPtr->style); - - lastSubFontPtr = &fontPtr->subFontArray[0]; - - end = source + numBytes; - for (p = source; p < end; ) { - next = p + Tcl_UtfToUniChar(p, &ch); - thisSubFontPtr = FindSubFontForChar(fontPtr, ch, &lastSubFontPtr); - if (thisSubFontPtr != lastSubFontPtr) { - if (p > source) { - familyPtr = lastSubFontPtr->familyPtr; - TextFont(familyPtr->faceNum); - Tcl_UtfToExternalDString(familyPtr->encoding, source, - p - source, &runString); - MoveTo((short) x, (short) y); - DrawText(Tcl_DStringValue(&runString), 0, - Tcl_DStringLength(&runString)); - x += TextWidth(Tcl_DStringValue(&runString), 0, - Tcl_DStringLength(&runString)); - Tcl_DStringFree(&runString); - source = p; - } - lastSubFontPtr = thisSubFontPtr; - } - p = next; - } - if (p > source) { - familyPtr = lastSubFontPtr->familyPtr; - TextFont(familyPtr->faceNum); - Tcl_UtfToExternalDString(familyPtr->encoding, source, - p - source, &runString); - MoveTo((short) x, (short) y); - DrawText(Tcl_DStringValue(&runString), 0, - Tcl_DStringLength(&runString)); - Tcl_DStringFree(&runString); + const Tcl_UniChar * uchars; + int ulen; + + if (y != currentY + || x < currentRight-1 || x > currentRight+2 + || currentFontPtr != fontPtr) { + Tcl_DStringFree(¤tLine); + Tcl_DStringInit(¤tLine); + currentY = y; + currentLeft = x; + currentFontPtr = fontPtr; + *offset = 0; + } else { + *offset = Tcl_DStringLength(¤tLine) / 2; } + + Tcl_UtfToUniCharDString(source, numBytes, ¤tLine); + uchars = (const Tcl_UniChar*) Tcl_DStringValue(¤tLine); + ulen = Tcl_DStringLength(¤tLine) / sizeof(*uchars); + LayoutSetString(fontPtr, drawingContextPtr, uchars, ulen); + currentRight = x + MeasureStringWidth(fontPtr, *offset, ulen); + + return uchars; } +#endif /* TK_MAC_COALESCE_LINE */ /* *--------------------------------------------------------------------------- * - * TkMacOSXIsCharacterMissing -- + * FamilyNameForFamilyID -- * - * Given a tkFont and a character determines whether the character has - * a glyph defined in the font or not. Note that this is potentially - * not compatible with Mac OS 8 as it looks at the font handle - * structure directly. Looks into the character array of the font - * handle to determine whether the glyph is defined or not. + * Helper for InitFont() and TkMacOSXFontDescriptionForFMFontInfo(). + * Retrieves font family names for a given font family ID. * * Results: - * Returns a 1 if the character is missing, a 0 if it is not. + * Font family name or NULL. * * Side effects: * None. @@ -1168,17 +1387,29 @@ MultiFontDrawText( *--------------------------------------------------------------------------- */ -int -TkMacOSXIsCharacterMissing( - Tk_Font tkfont, /* The font we are looking in. */ - unsigned int searchChar) /* The character we are looking for. */ +static const char * +FamilyNameForFamilyID( + FMFontFamily familyId) { - /* - * For some reason, FMSwapFont always returns a NULL font handle under OS X - * Until we figure this one out, return 0; - */ + OSStatus err; + char name[256] = ""; + const MacFontFamily * familyPtr = NULL; - return 0; + err = ChkErr(GetFontFamilyName, familyId, name, sizeof(name)); + if (err == noErr) { + /* + * We find the canonical font name, so we can avoid unnecessary + * memory management. + */ + + familyPtr = FindFontFamily(name); +#ifdef TK_MAC_DEBUG_FONTS + if (!familyPtr) { + TkMacOSXDbgMsg("Font family '%s' not found", name); + } +#endif + } + return familyPtr ? familyPtr->name : NULL; } /* @@ -1187,12 +1418,12 @@ TkMacOSXIsCharacterMissing( * InitFont -- * * Helper for TkpGetNativeFont() and TkpGetFontFromAttributes(). - * Initializes the memory for a MacFont that wraps the platform-specific - * data. + * Initializes the memory for a MacFont that wraps the + * platform-specific data. * - * The caller is responsible for initializing the fields of the - * TkFont that are used exclusively by the generic TkFont code, and - * for releasing those fields before calling TkpDeleteFont(). + * The caller is responsible for initializing the fields of the TkFont + * that are used exclusively by the generic TkFont code, and for + * releasing those fields before calling TkpDeleteFont(). * * Results: * Fills the MacFont structure. @@ -1205,784 +1436,893 @@ TkMacOSXIsCharacterMissing( static void InitFont( - Tk_Window tkwin, /* For display where font will be used. */ - int faceNum, /* Macintosh font number. */ - unsigned char *familyName, /* The font family name or NULL. */ - int size, /* Point size for Macintosh font. */ - int style, /* Macintosh style bits. */ - MacFont *fontPtr) /* Filled with information constructed from - * the above arguments. */ + FMFontFamily familyId, /* The font family to initialize for. */ + const char * familyName, /* The font family name, if known. Otherwise + * this can be NULL. */ + int size, /* Point size for the font. */ + int qdStyle, /* QuickDraw style bits. */ + MacFont * fontPtr) /* Filled with information constructed from the + * above arguments. */ { - Str255 nativeName; FontInfo fi; - TkFontAttributes *faPtr; - TkFontMetrics *fmPtr; - CGrafPtr savePort; - Boolean portChanged; - short pixels; + TkFontAttributes * faPtr; + TkFontMetrics * fmPtr; + int periodWidth, wWidth; if (size == 0) { - size = -GetDefFontSize(); + size = GetDefFontSize(); } - pixels = (short) TkFontGetPixels(tkwin, size); - - portChanged = QDSwapPort(gWorld, &savePort); - TextFont(faceNum); - TextSize(pixels); - TextFace(style); - - GetFontInfo(&fi); + ChkErr(FetchFontInfo, familyId, size, qdStyle, &fi); if (!familyName) { - GetFontName(faceNum, nativeName); - familyName = nativeName; + familyName = FamilyNameForFamilyID(familyId); } - fontPtr->font.fid = (Font) fontPtr; + + fontPtr->font.fid = (Font) fontPtr; faPtr = &fontPtr->font.fa; - faPtr->family = GetUtfFaceName(familyName); - faPtr->size = TkFontGetPoints(tkwin, size); - faPtr->weight = (style & bold) ? TK_FW_BOLD : TK_FW_NORMAL; - faPtr->slant = (style & italic) ? TK_FS_ITALIC : TK_FS_ROMAN; - faPtr->underline = ((style & underline) != 0); + faPtr->family = familyName; + faPtr->size = size; + faPtr->weight = (qdStyle & bold) ? TK_FW_BOLD : TK_FW_NORMAL; + faPtr->slant = (qdStyle & italic) ? TK_FS_ITALIC : TK_FS_ROMAN; + faPtr->underline = ((qdStyle & underline) != 0); faPtr->overstrike = 0; fmPtr = &fontPtr->font.fm; - fmPtr->ascent = fi.ascent; + + /* + * Note: Macs measure the line height as ascent + descent + + * leading. Leading as a separate entity does not exist in X11 + * and Tk. We add it to the ascent at the moment, because adding + * it to the descent, as the Mac docs would indicate, would change + * the position of self-drawn underlines. + */ + + fmPtr->ascent = fi.ascent + fi.leading; fmPtr->descent = fi.descent; fmPtr->maxWidth = fi.widMax; - fmPtr->fixed = (CharWidth('i') == CharWidth('w')); - fontPtr->size = pixels; - fontPtr->style = (short) style; + fontPtr->qdFont = familyId; + fontPtr->qdSize = size; + fontPtr->qdStyle = (short) qdStyle; - fontPtr->numSubFonts = 1; - fontPtr->subFontArray = fontPtr->staticSubFonts; - InitSubFont(fontPtr, faceNum, &fontPtr->subFontArray[0]); + InitATSUObjects(familyId, size, qdStyle, &fontPtr->atsuFontId, + &fontPtr->atsuLayout, &fontPtr->atsuStyle); - if (portChanged) { - QDSwapPort(savePort, NULL); - } + Tk_MeasureChars((Tk_Font)fontPtr, ".", 1, -1, 0, &periodWidth); + Tk_MeasureChars((Tk_Font)fontPtr, "W", 1, -1, 0, &wWidth); + fmPtr->fixed = periodWidth == wWidth; + + SetFontFeatures(fontPtr->atsuFontId, fmPtr->fixed, size, + fontPtr->atsuStyle); + + AdjustFontHeight(fontPtr); } /* - *------------------------------------------------------------------------- + *--------------------------------------------------------------------------- * - * ReleaseFont -- + * InitATSUObjects -- * - * Called to release the Macintosh-specific contents of a TkFont. - * The caller is responsible for freeing the memory used by the - * font itself. + * Helper for InitFont(). Initializes the ATSU data handles for a + * MacFont. * * Results: - * None. + * Sets up all we know and can do at this point in time in fontIdPtr, + * layoutPtr and stylePtr. * * Side effects: - * Memory is freed. + * Allocates data structures inside of ATSU. * *--------------------------------------------------------------------------- */ static void -ReleaseFont( - MacFont *fontPtr) /* The font to delete. */ +InitATSUObjects( + FMFontFamily familyId, /* The font family to use. */ + short ptSize, short qdStyles, + /* The additional font parameters. */ + ATSUFontID *fontIdPtr, /* Filled with the font id. */ + ATSUTextLayout *layoutPtr, /* Filled with the ATSU layout handle. */ + ATSUStyle *stylePtr) /* Filled with the ATSU style handle, + * configured with all parameters. */ { - int i; + FMFontStyle stylesDone, stylesLeft; - for (i = 0; i < fontPtr->numSubFonts; i++) { - ReleaseSubFont(&fontPtr->subFontArray[i]); - } - if (fontPtr->subFontArray != fontPtr->staticSubFonts) { - ckfree((char *) fontPtr->subFontArray); - } + /* + * Defaults in case of error. + */ + + *fontIdPtr = GetAppFont(); + *stylePtr = 0; + *layoutPtr = 0; + + /* + * Generate a font id from family id and QD style bits. + */ + + ChkErr(FMGetFontFromFontFamilyInstance, familyId, qdStyles, fontIdPtr, + &stylesDone); + + /* + * We see what style bits are left and tell ATSU to synthesize what's + * left like QD does it. + */ + + stylesLeft = qdStyles & ~(unsigned)stylesDone; + + /* + * Create the style and set its attributes. + */ + + ChkErr(ATSUCreateStyle, stylePtr); + InitATSUStyle(*fontIdPtr, ptSize, stylesLeft, *stylePtr); + + /* + * Create the layout. Note: We can't set the layout attributes here, + * because the text and the style must be set first. + */ + + ChkErr(ATSUCreateTextLayout, layoutPtr); + /*InitATSULayout(*layoutPtr);*/ } /* - *------------------------------------------------------------------------- + *--------------------------------------------------------------------------- * - * InitSubFont -- + * InitATSUStyle -- * - * Wrap a screen font and load the FontFamily that represents - * it. Used to prepare a SubFont so that characters can be mapped - * from UTF-8 to the charset of the font. + * Helper for InitATSUObjects(). Initializes the ATSU style for a + * MacFont. * * Results: - * The subFontPtr is filled with information about the font. + * Sets up all parameters needed for an ATSU style. * * Side effects: - * None. + * Allocates data structures for the style inside of ATSU. * - *------------------------------------------------------------------------- + *--------------------------------------------------------------------------- */ static void -InitSubFont( - const MacFont *fontPtr, /* Font object in which the SubFont will be - * used. */ - int faceNum, /* The font number. */ - SubFont *subFontPtr) /* Filled with SubFont constructed from - * above attributes. */ +InitATSUStyle( + ATSUFontID fontId, /* The font id to use. */ + short ptSize, short qdStyles, + /* Additional font parameters. */ + ATSUStyle style) /* The style handle to configure. */ { - subFontPtr->familyPtr = AllocFontFamily(fontPtr, faceNum); - subFontPtr->fontMap = subFontPtr->familyPtr->fontMap; + /* + * Attributes for the style. + */ + + Fixed fsize = IntToFixed(ptSize); + Boolean + isBold = (qdStyles&bold) != 0, + isUnderline = (qdStyles&underline) != 0, + isItalic = (qdStyles&italic) != 0; + + ATSStyleRenderingOptions options = + antialiasedTextEnabled == -1 ? kATSStyleNoOptions : + antialiasedTextEnabled == 0 ? kATSStyleNoAntiAliasing : + kATSStyleApplyAntiAliasing; + + static const ATSUAttributeTag styleTags[] = { + kATSUFontTag, kATSUSizeTag, + kATSUQDBoldfaceTag, kATSUQDItalicTag, kATSUQDUnderlineTag, + kATSUStyleRenderingOptionsTag, + }; + static const ByteCount styleSizes[] = { + sizeof(ATSUFontID), sizeof(Fixed), + sizeof(Boolean), sizeof(Boolean), sizeof(Boolean), + sizeof(ATSStyleRenderingOptions), + }; + const ATSUAttributeValuePtr styleValues[] = { + &fontId, &fsize, + &isBold, &isItalic, &isUnderline, + &options, + }; + + ChkErr(ATSUSetAttributes, style, sizeof(styleTags)/sizeof(styleTags[0]), + styleTags, styleSizes, styleValues); } /* - *------------------------------------------------------------------------- + *--------------------------------------------------------------------------- * - * ReleaseSubFont -- + * SetFontFeatures -- * - * Called to release the contents of a SubFont. The caller is - * responsible for freeing the memory used by the SubFont itself. + * Helper for InitFont(). Request specific font features of the ATSU + * style object for a MacFont. * * Results: * None. * * Side effects: - * Memory and resources are freed. + * Specific font features are enabled on the ATSU style object. * *--------------------------------------------------------------------------- */ static void -ReleaseSubFont( - SubFont *subFontPtr) /* The SubFont to delete. */ +SetFontFeatures( + ATSUFontID fontId, /* The font id to use. */ + int fixed, /* Is this a fixed font? */ + short size, /* Size of the font */ + ATSUStyle style) /* The style handle to configure. */ { - FreeFontFamily(subFontPtr->familyPtr); + /* + * Don't use the standard latin ligatures, if this is determined to be a + * fixed-width font. + */ + + static const ATSUFontFeatureType fixed_featureTypes[] = { + kLigaturesType, kLigaturesType + }; + static const ATSUFontFeatureSelector fixed_featureSelectors[] = { + kCommonLigaturesOffSelector, kRareLigaturesOffSelector + }; + + if (fixed) { + ChkErr(ATSUSetFontFeatures, style, sizeof(fixed_featureTypes) / + sizeof(fixed_featureTypes[0]), fixed_featureTypes, + fixed_featureSelectors); + if (size <= 10) { + /* + * Disable antialiasing of fixed-width fonts with sizes <= 10 + */ + + const ATSStyleRenderingOptions options = kATSStyleNoAntiAliasing; + const ATSUAttributeTag styleTag = kATSUStyleRenderingOptionsTag; + const ByteCount styleSize = sizeof(ATSStyleRenderingOptions); + const ConstATSUAttributeValuePtr styleValue = &options; + + ChkErr(ATSUSetAttributes, style, 1, &styleTag, &styleSize, + (ATSUAttributeValuePtr*) &styleValue); + } + } } /* - *------------------------------------------------------------------------- + *--------------------------------------------------------------------------- * - * AllocFontFamily -- + * AdjustFontHeight -- * - * Find the FontFamily structure associated with the given font - * family. The information should be stored by the caller in a - * SubFont and used when determining if that SubFont supports a - * character. + * Helper for InitFont(). Check font height against some real world + * examples. * * Results: - * A pointer to a FontFamily. The reference count in the FontFamily - * is automatically incremented. When the SubFont is released, the - * reference count is decremented. When no SubFont is using this - * FontFamily, it may be deleted. + * None. * * Side effects: - * A new FontFamily structure will be allocated if this font family - * has not been seen. + * The metrics in fontPtr->font.fm are adjusted so that typical combined + * characters fit into ascent+descent. * - *------------------------------------------------------------------------- + *--------------------------------------------------------------------------- */ -static FontFamily * -AllocFontFamily( - const MacFont *fontPtr, /* Font object in which the FontFamily will - * be used. */ - int faceNum) /* The font number. */ +static void +AdjustFontHeight( + MacFont * fontPtr) { - FontFamily *familyPtr; - int i; - - familyPtr = fontFamilyList; - for (; familyPtr != NULL; familyPtr = familyPtr->nextPtr) { - if (familyPtr->faceNum == faceNum) { - familyPtr->refCount++; - return familyPtr; - } - } - - familyPtr = (FontFamily *) ckalloc(sizeof(FontFamily)); - memset(familyPtr, 0, sizeof(FontFamily)); - familyPtr->nextPtr = fontFamilyList; - fontFamilyList = familyPtr; - /* - * Set key for this FontFamily. + * The standard values for ascent, descent and leading as determined in + * InitFont do not take composition into account, they are designed for + * plain ASCII characters. This code measures the actual size of some + * typical composed characters from the Latin-1 range and corrects these + * factors, especially the ascent. + * + * A font requested with a pixel size may thus have a larger line height + * than requested. + * + * An alternative would be to instruct ATSU to shrink oversized combined + * characters. I think I have seen that feature somewhere, but I can't + * find it now [BR]. */ - familyPtr->faceNum = faceNum; + static const UniChar chars[] + /* Auml, Aacute, Acirc, Atilde, Ccedilla */ + = {0x00C4, 0x00C1, 0x00C2, 0x00C3, 0x00C7}; + static const int charslen = sizeof(chars) / sizeof(chars[0]); + Rect size; + OSStatus err; - /* - * An initial refCount of 2 means that FontFamily information will - * persist even when the SubFont that loaded the FontFamily is released. - * Change it to 1 to cause FontFamilies to be unloaded when not in use. - */ + LayoutSetString(fontPtr, NULL, chars, charslen); - familyPtr->refCount = 2; - familyPtr->encoding = GetFontEncoding(faceNum, 1, &familyPtr->isSymbolFont); - familyPtr->isMultiByteFont = 0; - FillParseTable(familyPtr->typeTable, FontToScript(faceNum)); - for (i = 0; i < 256; i++) { - if (familyPtr->typeTable[i] != 0) { - familyPtr->isMultiByteFont = 1; - break; + size.top = size.bottom = 0; + err = ChkErr(ATSUMeasureTextImage, fontPtr->atsuLayout, 0, charslen, 0, 0, + &size); + + if (err == noErr) { + TkFontMetrics * fmPtr = &fontPtr->font.fm; + int ascent = -size.top; + int descent = size.bottom; + + if (ascent > fmPtr->ascent) { + fmPtr->ascent = ascent; + } + if (descent > fmPtr->descent) { + fmPtr->descent = descent; } } - return familyPtr; } /* - *------------------------------------------------------------------------- + *--------------------------------------------------------------------------- * - * FreeFontFamily -- + * InitATSULayout -- * - * Called to free a FontFamily when the SubFont is finished using it. - * Frees the contents of the FontFamily and the memory used by the - * FontFamily itself. + * Helper for LayoutSetString(). Initializes the ATSU layout + * object for a MacFont and a specific string. * * Results: - * None. + * Sets up all parameters needed for an ATSU layout object. * * Side effects: - * None. + * Allocates data structures for the layout object inside of ATSU. * - *------------------------------------------------------------------------- + * Assumptions: + * The actual string data and style information is already set by + * ATSUSetTextPointerLocation() and ATSUSetRunStyle() (see + * LayoutSetString()). + * + *--------------------------------------------------------------------------- */ static void -FreeFontFamily( - FontFamily *familyPtr) /* The FontFamily to delete. */ +InitATSULayout( + const TkMacOSXDrawingContext *drawingContextPtr, + /* Specifies the CGContext to use. */ + ATSUTextLayout layout, /* The layout object to configure. */ + int fixed) /* Is this a fixed font? */ { - FontFamily **familyPtrPtr; - int i; + /* + * Attributes for the layout. + */ - if (familyPtr == NULL) { - return; - } - familyPtr->refCount--; - if (familyPtr->refCount > 0) { - return; - } - Tcl_FreeEncoding(familyPtr->encoding); - for (i = 0; i < FONTMAP_PAGES; i++) { - if (familyPtr->fontMap[i] != NULL) { - ckfree((char *) familyPtr->fontMap[i]); - } - } + ATSLineLayoutOptions layoutOptions = 0 +#if TK_MAC_COALESCE_LINE + /* + * Options to use unconditionally when we try to do coalescing. + */ + | kATSLineDisableAllLayoutOperations + | kATSLineFractDisable + | kATSLineUseDeviceMetrics +#endif + ; + CGContextRef context = drawingContextPtr ? + drawingContextPtr->context : NULL; + + static const ATSUAttributeTag layoutTags[] = { + kATSUCGContextTag, + kATSULineLayoutOptionsTag, + }; + static const ByteCount layoutSizes[] = { + sizeof(CGContextRef), + sizeof(ATSLineLayoutOptions), + }; + const ATSUAttributeValuePtr layoutValues[] = { + &context, + &layoutOptions, + }; /* - * Delete from list. + * Ensure W(abcdefg) == W(a)*7 for fixed fonts (Latin scripts only). */ - for (familyPtrPtr = &fontFamilyList; ; ) { - if (*familyPtrPtr == familyPtr) { - *familyPtrPtr = familyPtr->nextPtr; - break; - } - familyPtrPtr = &(*familyPtrPtr)->nextPtr; + if (fixed) { + layoutOptions |= kATSLineFractDisable | kATSLineUseDeviceMetrics; } - ckfree((char *) familyPtr); + ChkErr(ATSUSetLayoutControls, layout, sizeof(layoutTags) / + sizeof(layoutTags[0]), layoutTags, layoutSizes, layoutValues); + ChkErr(ATSUSetTransientFontMatching, layout, true); } /* - *------------------------------------------------------------------------- + *--------------------------------------------------------------------------- * - * FindSubFontForChar -- + * LayoutSetString -- * - * Determine which physical screen font is necessary to use to - * display the given character. If the font object does not have - * a screen font that can display the character, another screen font - * may be loaded into the font object, following a set of preferred - * fallback rules. + * Setup the MacFont for a specific string. * * Results: - * The return value is the SubFont to use to display the given - * character. + * Sets up all parameters so that ATSU can work with the objects in + * MacFont. * * Side effects: - * The contents of fontPtr are modified to cache the results - * of the lookup and remember any SubFonts that were dynamically - * loaded. The table of SubFonts might be extended, and if a non-NULL - * reference to a subfont pointer is available, it is updated if it - * previously pointed into the old subfont table. + * Sets parameters on the layout object fontPtr->atsuLayout. * - *------------------------------------------------------------------------- + *--------------------------------------------------------------------------- */ -static SubFont * -FindSubFontForChar( - MacFont *fontPtr, /* The font object with which the character - * will be displayed. */ - int ch, /* The Unicode character to be displayed. */ - SubFont **fixSubFontPtrPtr) /* Subfont reference to fix up if we - * reallocate our subfont table. */ +void +LayoutSetString( + const MacFont *fontPtr, /* The fontPtr to configure. */ + const TkMacOSXDrawingContext *drawingContextPtr, + /* For the CGContext to be used.*/ + const UniChar *uchars, int ulen) + /* The UniChar string to set into + * fontPtr->atsuLayout. */ { - int i, j, k; - const char *fallbackName; - char **aliases; - SubFont *subFontPtr; - FontNameMap *mapPtr; - Tcl_DString faceNames; - char ***fontFallbacks; - char **anyFallbacks; - - if (FontMapLookup(&fontPtr->subFontArray[0], ch)) { - return &fontPtr->subFontArray[0]; - } - - for (i = 1; i < fontPtr->numSubFonts; i++) { - if (FontMapLookup(&fontPtr->subFontArray[i], ch)) { - return &fontPtr->subFontArray[i]; - } - } + ChkErr(ATSUSetTextPointerLocation, fontPtr->atsuLayout, uchars, + kATSUFromTextBeginning, ulen, ulen); /* - * Keep track of all face names that we check, so we don't check some - * name multiple times if it can be reached by multiple paths. + * Styles can only be set after the text is set. */ - Tcl_DStringInit(&faceNames); + ChkErr(ATSUSetRunStyle, fontPtr->atsuLayout, fontPtr->atsuStyle, + kATSUFromTextBeginning, kATSUToTextEnd); - aliases = TkFontGetAliasList(fontPtr->font.fa.family); + /* + * Layout attributes can only be set after the styles are set. + */ - subFontPtr = NULL; - fontFallbacks = TkFontGetFallbacks(); - for (i = 0; fontFallbacks[i] != NULL; i++) { - for (j = 0; fontFallbacks[i][j] != NULL; j++) { - fallbackName = fontFallbacks[i][j]; - if (strcasecmp(fallbackName, fontPtr->font.fa.family) == 0) { - /* - * If the base font has a fallback... - */ + InitATSULayout(drawingContextPtr, fontPtr->atsuLayout, + fontPtr->font.fm.fixed); +} + +/* + *------------------------------------------------------------------------- + * + * ReleaseFont -- + * + * Called to release the Macintosh-specific contents of a TkFont. The + * caller is responsible for freeing the memory used by the font + * itself. + * + * Results: + * None. + * + * Side effects: + * Memory is freed. + * + *--------------------------------------------------------------------------- + */ - goto tryfallbacks; - } else if (aliases != NULL) { - /* - * Or if an alias for the base font has a fallback... - */ +static void +ReleaseFont( + MacFont *fontPtr) /* The font to delete. */ +{ + ATSUDisposeTextLayout(fontPtr->atsuLayout); + ATSUDisposeStyle(fontPtr->atsuStyle); +} + +/* + *------------------------------------------------------------------------- + * + * FindFontFamilyOrAlias, FindFontFamilyOrAliasOrFallback -- + * + * Determine if any physical screen font exists on the system with the + * given family name. If the family exists, then it should be possible + * to construct some physical screen font with that family name. + * + * FindFontFamilyOrAlias also considers font aliases as determined by + * TkFontGetAliasList(). + * + * FindFontFamilyOrAliasOrFallback also considers font aliases as + * determined by TkFontGetFallbacks(). + * + * The overall algorithm to get the closest font to the one requested is + * this: + * + * try fontname + * try all aliases for fontname + * foreach fallback for fontname + * try the fallback + * try all aliases for the fallback + * + * Results: + * + * The return value is NULL if the specified font family does not exist, + * a valid MacFontFamily* otherwise. + * + * Side effects: + * + * None. + * + *------------------------------------------------------------------------- + */ - for (k = 0; aliases[k] != NULL; k++) { - if (strcasecmp(aliases[k], fallbackName) == 0) { - goto tryfallbacks; - } - } - } - } - continue; +static const MacFontFamily * +FindFontFamilyOrAlias( + const char *name) /* Name or alias name of the font to find. */ +{ + const MacFontFamily * familyPtr; + char ** aliases; + int i; - /* - * ...then see if we can use one of the fallbacks, or an - * alias for one of the fallbacks. - */ + familyPtr = FindFontFamily(name); + if (familyPtr != NULL) { + return familyPtr; + } - tryfallbacks: - for (j = 0; fontFallbacks[i][j] != NULL; j++) { - fallbackName = fontFallbacks[i][j]; - subFontPtr = CanUseFallbackWithAliases(fontPtr, fallbackName, - ch, &faceNames, fixSubFontPtrPtr); - if (subFontPtr != NULL) { - goto end; + aliases = TkFontGetAliasList(name); + if (aliases != NULL) { + for (i = 0; aliases[i] != NULL; i++) { + familyPtr = FindFontFamily(aliases[i]); + if (familyPtr != NULL) { + return familyPtr; } } } + return NULL; +} + +static const MacFontFamily * +FindFontFamilyOrAliasOrFallback( + const char *name) /* Name or alias name of the font to find. */ +{ + const MacFontFamily * familyPtr; + const char * fallback; + char *** fallbacks; + int i, j; - /* - * See if we can use something from the global fallback list. - */ - - anyFallbacks = TkFontGetGlobalClass(); - for (i = 0; anyFallbacks[i] != NULL; i++) { - fallbackName = anyFallbacks[i]; - subFontPtr = CanUseFallbackWithAliases(fontPtr, fallbackName, ch, - &faceNames, fixSubFontPtrPtr); - if (subFontPtr != NULL) { - goto end; - } + familyPtr = FindFontFamilyOrAlias(name); + if (familyPtr != NULL) { + return familyPtr; } - - /* - * Try all face names available in the whole system until we - * find one that can be used. - */ - - for (mapPtr = gFontNameMap; mapPtr->utfName != NULL; mapPtr++) { - fallbackName = mapPtr->utfName; - if (SeenName(fallbackName, &faceNames) == 0) { - subFontPtr = CanUseFallback(fontPtr, fallbackName, ch, - fixSubFontPtrPtr); - if (subFontPtr != NULL) { - goto end; + fallbacks = TkFontGetFallbacks(); + for (i = 0; fallbacks[i] != NULL; i++) { + for (j = 0; (fallback = fallbacks[i][j]) != NULL; j++) { + if (strcasecmp(name, fallback) == 0) { + for (j = 0; (fallback = fallbacks[i][j]) != NULL; j++) { + familyPtr = FindFontFamilyOrAlias(fallback); + if (familyPtr != NULL) { + return familyPtr; + } + } } + break; /* benny: This "break" is a carry-over from + * tkMacOSXFont.c, but what is actually its purpose + * ???? */ } } - end: - Tcl_DStringFree(&faceNames); - if (subFontPtr == NULL) { - /* - * No font can display this character. We will use the base font - * and have it display the "unknown" character. - */ + /* + * FIXME: We would have liked to recover by re-enumerating fonts. But + * that doesn't work, because Carbon seems to cache the inital list of + * fonts. Fonts newly installed don't show up with + * FMCreateFontFamilyIterator()/FMGetNextFontFamily() without a restart + * of the app. Similar problem with fonts removed. + */ - subFontPtr = &fontPtr->subFontArray[0]; - FontMapInsert(subFontPtr, ch); - } - return subFontPtr; +#ifdef TK_MAC_DEBUG_FONTS + TkMacOSXDbgMsg("Font family '%s' not found", name); +#endif + + return NULL; } /* *------------------------------------------------------------------------- * - * FontMapLookup -- + * InitFontFamilies -- * - * See if the screen font can display the given character. + * Helper to TkpFontPkgInit. Use the Font Manager to fill in the + * familyList global array. * * Results: - * The return value is 0 if the screen font cannot display the - * character, non-zero otherwise. + * + * None. * * Side effects: - * New pages are added to the font mapping cache whenever the - * character belongs to a page that hasn't been seen before. - * When a page is loaded, information about all the characters on - * that page is stored, not just for the single character in - * question. + * + * Allocates memory. * *------------------------------------------------------------------------- */ -static int -FontMapLookup( - SubFont *subFontPtr, /* Contains font mapping cache to be queried - * and possibly updated. */ - int ch) /* Character to be tested. */ +static void +InitFontFamilies(void) { - int row, bitOffset; + FMFontFamily fontFamily; + Str255 fontName; + SInt16 fontSize; + Style fontStyle; - row = ch >> FONTMAP_SHIFT; - if (subFontPtr->fontMap[row] == NULL) { - FontMapLoadPage(subFontPtr, row); + /* + * Has this been called before? + */ + + if (familyListNextFree > 0) { + return; + } + + ChkErr(ATSFontFamilyApplyFunction, FontFamilyEnumCallback,NULL); + + if (GetThemeFontAndFamily(kThemeSystemFont, &fontFamily, fontName, + &fontSize, &fontStyle) == noErr) { + AddFontFamily(SYSTEMFONT_NAME, fontFamily); + } + if (GetThemeFontAndFamily(kThemeApplicationFont, &fontFamily, fontName, + &fontSize, &fontStyle) == noErr) { + AddFontFamily(APPLFONT_NAME, fontFamily); + } + if (GetThemeFontAndFamily(kThemeMenuItemFont, &fontFamily, fontName, + &fontSize, &fontStyle) == noErr) { + AddFontFamily(MENUITEMFONT_NAME, fontFamily); } - bitOffset = ch & (FONTMAP_BITSPERPAGE - 1); - return (subFontPtr->fontMap[row][bitOffset >> 3] >> (bitOffset & 7)) & 1; + + SortFontFamilies(); } /* *------------------------------------------------------------------------- * - * FontMapInsert -- + * FontFamilyEnumCallback -- * - * Tell the font mapping cache that the given screen font should be - * used to display the specified character. This is called when no - * font on the system can be be found that can display that - * character; we lie to the font and tell it that it can display - * the character, otherwise we would end up re-searching the entire - * fallback hierarchy every time that character was seen. + * Callback for ATSFontFamilyApplyFunction(). * * Results: - * None. + * + * noErr. * * Side effects: - * New pages are added to the font mapping cache whenever the - * character belongs to a page that hasn't been seen before. - * When a page is loaded, information about all the characters on - * that page is stored, not just for the single character in - * question. + * + * None. * *------------------------------------------------------------------------- */ -static void -FontMapInsert( - SubFont *subFontPtr, /* Contains font mapping cache to be - * updated. */ - int ch) /* Character to be added to cache. */ +static OSStatus +FontFamilyEnumCallback( + ATSFontFamilyRef family, + void *refCon) { - int row, bitOffset; + OSStatus err; + char name[260] = ""; - row = ch >> FONTMAP_SHIFT; - if (subFontPtr->fontMap[row] == NULL) { - FontMapLoadPage(subFontPtr, row); + (void) refCon; + + err = ChkErr(GetFontFamilyName, family, name, sizeof(name)); + if (err == noErr) { + AddFontFamily(name, family); } - bitOffset = ch & (FONTMAP_BITSPERPAGE - 1); - subFontPtr->fontMap[row][bitOffset >> 3] |= 1 << (bitOffset & 7); + + return noErr; } /* *------------------------------------------------------------------------- * - * FontMapLoadPage -- + * GetFontFamilyName -- * - * Load information about all the characters on a given page. - * This information consists of one bit per character that indicates - * whether the associated HFONT can (1) or cannot (0) display the - * characters on the page. + * Use the Font Manager to get the name of a given FMFontfamily. This + * currently gets the standard, non-localized QuickDraw name. Other + * names would be possible, see docs for ATSUFindFontName for a + * selection. The MacOSX font selector seems to use the localized + * family name given by ATSUFindFontName(kFontFamilyName), but that API + * doesn't give us a name at all for some fonts. * * Results: - * None. + * An OS error code, noErr on success. name is filled with the + * resulting name. * * Side effects: - * Mempry allocated. + * None. * *------------------------------------------------------------------------- */ -static void -FontMapLoadPage( - SubFont *subFontPtr, /* Contains font mapping cache to be - * updated. */ - int row) /* Index of the page to be loaded into - * the cache. */ + +static OSStatus +GetFontFamilyName( + FMFontFamily fontFamily, /* The font family for which to find the + * name. */ + char * name, int numBytes) /* Filled with the result. */ { - FMInput fm; - FMOutPtr fmOut; - int i, end, bitOffset, isMultiByteFont; - char src[TCL_UTF_MAX]; - unsigned char buf[16]; - int srcRead, dstWrote; - Tcl_Encoding encoding; - Handle fHandle = NULL; - - subFontPtr->fontMap[row] = (char *) ckalloc(FONTMAP_BITSPERPAGE / 8); - memset(subFontPtr->fontMap[row], 0, FONTMAP_BITSPERPAGE / 8); - - encoding = subFontPtr->familyPtr->encoding; - - fm.family = subFontPtr->familyPtr->faceNum; - fm.size = 12; - fm.face = 0; - fm.needBits = 0; - fm.device = 0; - fm.numer.h = 1; - fm.numer.v = 1; - fm.denom.h = 1; - fm.denom.v = 1; + OSStatus err; + Str255 nativeName; + CFStringRef cfString; + TextEncoding encoding; + ScriptCode nameencoding; + + nativeName[0] = 0; + name[0] = 0; + err = ChkErr(FMGetFontFamilyName, fontFamily, nativeName); + if (err != noErr) { + return err; + } -/* - * For some reason, FMSwapFont alywas returns a structure where the returned font handle - * is NULL. Until we figure this one out, assume all characters are allowed - */ + /* + * QuickDraw font names are encoded with the script that the font uses. + * So we determine that encoding and than we reencode the name. We + * pre-set the encoding with the default value, so we do not need to + * check result codes here. + */ - fmOut = FMSwapFont(&fm); - fHandle = fmOut->fontHandle; - isMultiByteFont = subFontPtr->familyPtr->isMultiByteFont; + encoding = kTextEncodingMacRoman; + ChkErr(FMGetFontFamilyTextEncoding, fontFamily, &encoding); + nameencoding = encoding; + ChkErr(RevertTextEncodingToScriptInfo, encoding, &nameencoding, NULL, + NULL); - /* - * Found an outline font which has very complex font record. - * Let's just assume *ALL* the characters are allowed. - */ + /* + * Note: We could use Tcl facilities to do the re-encoding here. We'd + * have to maintain tables to map OS encoding codes to Tcl encoding names + * like tkMacOSXFont.c did. Using native re-encoding directly instead is + * a lot easier and future-proof than that. There is one snag, though: I + * have seen CFStringGetCString() crash with invalid encoding ids. But + * than if that happens it would be a bug in + * FMGetFontFamilyTextEncoding() or RevertTextEncodingToScriptInfo(). + * Another problem is that users have seen CFStringCreate return null + * (Bug #2548661). This is due to font names with a bad encoding. + */ - end = (row + 1) << FONTMAP_SHIFT; - for (i = row << FONTMAP_SHIFT; i < end; i++) { - if (Tcl_UtfToExternal(NULL, encoding, src, Tcl_UniCharToUtf(i, - src), - TCL_ENCODING_STOPONERROR, NULL, (char *) buf, - sizeof(buf), - &srcRead, &dstWrote, NULL) == TCL_OK) { - bitOffset = i & (FONTMAP_BITSPERPAGE - 1); - subFontPtr->fontMap[row][bitOffset >> 3] |= 1 - << (bitOffset & 7); - } - } + cfString = CFStringCreateWithPascalStringNoCopy( + NULL, nativeName, nameencoding, kCFAllocatorNull); + if (cfString == NULL) { + TkMacOSXDbgMsg("CFStringCreate: " + "'%.*s' could not be decoded with encoding %d", + nativeName[0], nativeName+1, (int) nameencoding); + return kTextMalformedInputErr; + } + + CFStringGetCString(cfString, name, numBytes, kCFStringEncodingUTF8); + CFRelease(cfString); + + return noErr; } /* - *--------------------------------------------------------------------------- + *------------------------------------------------------------------------- * - * CanUseFallbackWithAliases -- + * FindFontFamily -- * - * Helper function for FindSubFontForChar. Determine if the - * specified face name (or an alias of the specified face name) - * can be used to construct a screen font that can display the - * given character. + * Find the font family with the given name in the global familyList. + * Uses bsearch() for convenient access. Comparision is done + * non-case-sensitively with CompareFontFamilies() which see. * * Results: - * See CanUseFallback(). + * + * MacFontFamily: A pair of family id and the actual name registered for + * the font. * * Side effects: - * If the name and/or one of its aliases was rejected, the - * rejected string is recorded in nameTriedPtr so that it won't - * be tried again. The table of SubFonts might be extended, and if - * a non-NULL reference to a subfont pointer is available, it is - * updated if it previously pointed into the old subfont table. * - *--------------------------------------------------------------------------- + * None. + * + * Assumption: + * + * Requires the familyList array to be sorted. + * + *------------------------------------------------------------------------- */ -static SubFont * -CanUseFallbackWithAliases( - MacFont *fontPtr, /* The font object that will own the new - * screen font. */ - const char *faceName, /* Desired face name for new screen font. */ - int ch, /* The Unicode character that the new - * screen font must be able to display. */ - Tcl_DString *nameTriedPtr, /* Records face names that have already - * been tried. It is possible for the same - * face name to be queried multiple times when - * trying to find a suitable screen font. */ - SubFont **fixSubFontPtrPtr) /* Subfont reference to fix up if we - * reallocate our subfont table. */ +static const MacFontFamily * +FindFontFamily( + const char *name) /* The family name. Note: Names are compared + * non-case-sensitive. */ { - SubFont *subFontPtr; - char **aliases; - int i; + const MacFontFamily key = {name,-1}; - if (SeenName(faceName, nameTriedPtr) == 0) { - subFontPtr = CanUseFallback(fontPtr, faceName, ch, fixSubFontPtrPtr); - if (subFontPtr != NULL) { - return subFontPtr; - } - } - aliases = TkFontGetAliasList(faceName); - if (aliases != NULL) { - for (i = 0; aliases[i] != NULL; i++) { - if (SeenName(aliases[i], nameTriedPtr) == 0) { - subFontPtr = CanUseFallback(fontPtr, aliases[i], ch, - fixSubFontPtrPtr); - if (subFontPtr != NULL) { - return subFontPtr; - } - } - } + if(familyListMaxValid <= 0) { + return NULL; } - return NULL; + + return bsearch(&key, familyList, familyListMaxValid, sizeof(*familyList), + CompareFontFamilies); } /* - *--------------------------------------------------------------------------- + *------------------------------------------------------------------------- * - * SeenName -- + * EnumFontFamilies -- * - * Used to determine we have already tried and rejected the given - * face name when looking for a screen font that can support some - * Unicode character. + * Create a Tcl list with the registered names in the global familyList. * * Results: - * The return value is 0 if this face name has not already been seen, - * non-zero otherwise. + * A Tcl list of names. * * Side effects: * None. * - *--------------------------------------------------------------------------- + *------------------------------------------------------------------------- */ -static int -SeenName( - const char *name, /* The name to check. */ - Tcl_DString *dsPtr) /* Contains names that have already been - * seen. */ +static Tcl_Obj * +EnumFontFamilies(void) { - const char *seen, *end; + int i; + Tcl_Obj * tclList; - seen = Tcl_DStringValue(dsPtr); - end = seen + Tcl_DStringLength(dsPtr); - while (seen < end) { - if (strcasecmp(seen, name) == 0) { - return 1; - } - seen += strlen(seen) + 1; + tclList = Tcl_NewListObj(0, NULL); + for (i=0; i<familyListMaxValid; ++i) { + Tcl_ListObjAppendElement(NULL, tclList, + Tcl_NewStringObj(familyList[i].name, -1)); } - Tcl_DStringAppend(dsPtr, (char *) name, (int) (strlen(name) + 1)); - return 0; + + return tclList; } /* *------------------------------------------------------------------------- * - * CanUseFallback -- + * AddFontFamily -- * - * If the specified physical screen font has not already been loaded - * into the font object, determine if the specified physical screen - * font can display the given character. + * Register a font family in familyList. Until SortFontFamilies() is + * called, this is not actually available for FindFontFamily(). * * Results: - * The return value is a pointer to a newly allocated SubFont, owned - * by the font object. This SubFont can be used to display the given - * character. The SubFont represents the screen font with the base set - * of font attributes from the font object, but using the specified - * font name. NULL is returned if the font object already holds - * a reference to the specified physical font or if the specified - * physical font cannot display the given character. + * + * MacFontFamily: The new pair of family id and the actual name + * registered for the font. * * Side effects: - * The font object's subFontArray is updated to contain a reference - * to the newly allocated SubFont. The table of SubFonts might be - * extended, and if a non-NULL reference to a subfont pointer is - * available, it is updated if it previously pointed into the old - * subfont table. + * + * New entry in familyList and familyListNextFree updated. * *------------------------------------------------------------------------- */ -static SubFont * -CanUseFallback( - MacFont *fontPtr, /* The font object that will own the new - * screen font. */ - const char *faceName, /* Desired face name for new screen font. */ - int ch, /* The Unicode character that the new - * screen font must be able to display. */ - SubFont **fixSubFontPtrPtr) /* Subfont reference to fix up if we - * reallocate our subfont table. */ +static const MacFontFamily * +AddFontFamily( + const char *name, /* Font family name to register. */ + FMFontFamily familyId) /* Font family id to register. */ { - int i; - SubFont subFont; - short faceNum; - - if (GetFamilyNum(faceName, &faceNum) == 0) { - return NULL; - } - - /* - * Skip all fonts we've already used. - */ + MacFontFamily * familyPtr; - for (i = 0; i < fontPtr->numSubFonts; i++) { - if (faceNum == fontPtr->subFontArray[i].familyPtr->faceNum) { - return NULL; - } + if (familyListNextFree >= familyListSize) { + familyListSize += 100; + familyList = (MacFontFamily *) ckrealloc((void*) familyList, + familyListSize * sizeof(*familyList)); } - /* - * Load this font and see if it has the desired character. - */ + familyPtr = familyList + familyListNextFree; + ++familyListNextFree; - InitSubFont(fontPtr, faceNum, &subFont); - if (((ch < 256) && (subFont.familyPtr->isSymbolFont)) - || (FontMapLookup(&subFont, ch) == 0)) { - ReleaseSubFont(&subFont); - return NULL; - } + familyPtr->name = AddString(name); + familyPtr->familyId = familyId; - if (fontPtr->numSubFonts >= SUBFONT_SPACE) { - SubFont *newPtr = (SubFont *) ckalloc(sizeof(SubFont) - * (fontPtr->numSubFonts + 1)); - memcpy((char *) newPtr, fontPtr->subFontArray, - fontPtr->numSubFonts * sizeof(SubFont)); - if (fixSubFontPtrPtr != NULL) { - /* - * Fix up the variable pointed to by fixSubFontPtrPtr so it - * still points into the live array. [Bug 618872] - */ + return familyPtr; +} + +/* + *------------------------------------------------------------------------- + * + * SortFontFamilies -- + * + * Sort the entries in familyList. Only after calling + * SortFontFamilies(), the new families registered with AddFontFamily() + * are actually available for FindFontFamily(), because FindFontFamily() + * requires the array to be sorted. + * + * Results: + * + * None. + * + * Side effects: + * + * familyList is sorted and familyListMaxValid is updated. + * + *------------------------------------------------------------------------- + */ - *fixSubFontPtrPtr = - newPtr + (*fixSubFontPtrPtr - fontPtr->subFontArray); - } - if (fontPtr->subFontArray != fontPtr->staticSubFonts) { - ckfree((char *) fontPtr->subFontArray); - } - fontPtr->subFontArray = newPtr; +static void +SortFontFamilies(void) +{ + if (familyListNextFree > 0) { + qsort(familyList, familyListNextFree, sizeof(*familyList), + CompareFontFamilies); } - fontPtr->subFontArray[fontPtr->numSubFonts] = subFont; - fontPtr->numSubFonts++; - return &fontPtr->subFontArray[fontPtr->numSubFonts - 1]; + familyListMaxValid = familyListNextFree; } /* *------------------------------------------------------------------------- * - * GetFamilyNum -- + * CompareFontFamilies -- * - * Determines if any physical screen font exists on the system with - * the given family name. If the family exists, then it should be - * possible to construct some physical screen font with that family - * name. + * Comparison function used by SortFontFamilies() and FindFontFamily(). * * Results: - * The return value is 0 if the specified font family does not exist, - * non-zero otherwise. *faceNumPtr is filled with the unique face - * number that identifies the screen font, or 0 if the font family - * did not exist. + * Result as required to generate a stable sort order for bsearch() and + * qsort(). The ordering is not case-sensitive as far as + * Tcl_UtfNcasecmp() (which see) can provide that. + * + * Note: It would be faster to compare first the length and the actual + * strings only as a tie-breaker, but than the ordering wouldn't look so + * pretty in [font families] ;-). * * Side effects: * None. @@ -1991,148 +2331,101 @@ CanUseFallback( */ static int -GetFamilyNum( - const char *faceName, /* UTF-8 name of font family to query. */ - short *faceNumPtr) /* Filled with font number for above family. */ +CompareFontFamilies( + const void * vp1, + const void * vp2) { - FontNameMap *mapPtr; + const char * name1; + const char * name2; + int len1, len2, diff; - if (faceName != NULL) { - for (mapPtr = gFontNameMap; mapPtr->utfName != NULL; mapPtr++) { - if (strcasecmp(faceName, mapPtr->utfName) == 0) { - *faceNumPtr = mapPtr->faceNum; - return 1; - } - } - } - *faceNumPtr = 0; - return 0; -} + name1 = ((const MacFontFamily *) vp1)->name; + name2 = ((const MacFontFamily *) vp2)->name; -static int -GetFamilyOrAliasNum( - const char *faceName, /* UTF-8 name of font family to query. */ - short *faceNumPtr) /* Filled with font number for above family. */ -{ - char **aliases; - int i; + len1 = Tcl_NumUtfChars(name1, -1); + len2 = Tcl_NumUtfChars(name2, -1); - if (GetFamilyNum(faceName, faceNumPtr) != 0) { - return 1; - } - aliases = TkFontGetAliasList(faceName); - if (aliases != NULL) { - for (i = 0; aliases[i] != NULL; i++) { - if (GetFamilyNum(aliases[i], faceNumPtr) != 0) { - return 1; - } - } - } - return 0; + diff = Tcl_UtfNcasecmp(name1, name2, len1<len2 ? len1 : len2); + + return diff == 0 ? len1-len2 : diff; } /* *------------------------------------------------------------------------- * - * GetUtfFaceName -- + * AddString -- * - * Given the native name for a Macintosh font (in which the name of - * the font is in the encoding of the font itself), return the UTF-8 - * name that corresponds to that font. The specified font name must - * refer to a font that actually exists on the machine. - * - * This function is used to obtain the UTF-8 name when querying the - * properties of a Macintosh font object. + * Helper for AddFontFamily(). Allocates a string in the one-shot + * allocator. * * Results: - * The return value is a pointer to the UTF-8 of the specified font. + * A duplicated string in the one-shot allocator. * * Side effects: - * None. + * May allocate a new memory block. * - *------------------------------------------------------------------------ + *------------------------------------------------------------------------- */ -static Tk_Uid -GetUtfFaceName( - StringPtr nativeName) /* Pascal name for font in native encoding. */ +static const char * +AddString( + const char *in) /* String to add, zero-terminated. */ { - FontNameMap *mapPtr; + int len; + char *result; - for (mapPtr = gFontNameMap; mapPtr->utfName != NULL; mapPtr++) { - if (pstrcmp(nativeName, mapPtr->nativeName) == 0) { - return mapPtr->utfName; - } + len = strlen(in) +1; + + if (stringMemory == NULL + || (stringMemory->nextFree+len) > STRING_BLOCK_MAX) { + StringBlock * newblock = (StringBlock *) ckalloc(sizeof(StringBlock)); + + newblock->next = stringMemory; + newblock->nextFree = 0; + stringMemory = newblock; } - Tcl_Panic("GetUtfFaceName: unexpected nativeName"); - return NULL; + + result = stringMemory->strings + stringMemory->nextFree; + stringMemory->nextFree += len; + + memcpy(result, in, len); + + return result; } /* - *------------------------------------------------------------------------ - * - * GetFontEncoding -- + *--------------------------------------------------------------------------- * - * Return a string that can be passed to Tcl_GetTextEncoding() and - * used to convert bytes from UTF-8 into the encoding of the - * specified font. + * TkMacOSXIsCharacterMissing -- * - * The desired encoding to use to convert the name of a symbolic - * font into UTF-8 is macRoman, while the desired encoding to use - * to convert bytes in a symbolic font to UTF-8 is the corresponding - * symbolic encoding. Due to this dual interpretatation of symbolic - * fonts, the caller can specify what type of encoding to return - * should the specified font be symbolic. + * Given a tkFont and a character determine whether the character has + * a glyph defined in the font or not. * * Results: - * The return value is a string that specifies the font's encoding. - * If the font's encoding could not be identified, NULL is returned. + * Returns a 1 if the character is missing, a 0 if it is not. * * Side effects: * None. * - *------------------------------------------------------------------------ + *--------------------------------------------------------------------------- */ -static Tcl_Encoding -GetFontEncoding( - int faceNum, /* Macintosh font number. */ - int allowSymbol, /* If non-zero, then the encoding string - * for symbol fonts will be the corresponding - * symbol encoding. Otherwise, the encoding - * string for symbol fonts will be - * "macRoman". */ - int *isSymbolPtr) /* Filled with non-zero if this font is a - * symbol font, 0 otherwise. */ +int +TkMacOSXIsCharacterMissing( + Tk_Font tkfont, /* The font we are looking in. */ + unsigned int searchChar) /* The character we are looking for. */ { - Str255 faceName; - int script, lang; - char *name; - - if (allowSymbol != 0) { - GetFontName(faceNum, faceName); - if (pstrcasecmp(faceName, "\psymbol") == 0) { - *isSymbolPtr = 1; - return Tcl_GetEncoding(NULL, "symbol"); - } - if (pstrcasecmp(faceName, "\pzapf dingbats") == 0) { - *isSymbolPtr = 1; - return Tcl_GetEncoding(NULL, "macDingbats"); - } - } - *isSymbolPtr = 0; - script = FontToScript(faceNum); - lang = GetScriptVariable(script, smScriptLang); - name = NULL; - if (script == smRoman) { - name = TkFindStateString(romanMap, lang); - } else if (script == smCyrillic) { - name = TkFindStateString(cyrillicMap, lang); - } - if (name == NULL) { - name = TkFindStateString(scriptMap, script); - } - return Tcl_GetEncoding(NULL, name); + /* Background: This function is private and only used in + * tkMacOSXMenu.c:FindMarkCharacter(). + * + * We could use ATSUMatchFont() to implement. We'd have to change the + * definition of the encoding of the parameter searchChar from MacRoman + * to UniChar for that. + * + * The system uses font fallback for controls, so we don't really need + * this. */ + + return 0; } /* @@ -2154,17 +2447,16 @@ GetFontEncoding( void TkMacOSXInitControlFontStyle( - Tk_Font tkfont, - ControlFontStylePtr fsPtr) + Tk_Font tkfont, /* Tk font object to use for the control. */ + ControlFontStylePtr fsPtr) /* The style object to configure. */ { - MacFont *fontPtr = (MacFont *) tkfont; - FontFamily *lastFamilyPtr = fontPtr->subFontArray[0].familyPtr; + const MacFont * fontPtr = (MacFont *) tkfont; fsPtr->flags = kControlUseFontMask | kControlUseSizeMask | kControlUseFaceMask | kControlUseJustMask; - fsPtr->font = lastFamilyPtr->faceNum; - fsPtr->size = fontPtr->size; - fsPtr->style = fontPtr->style; + fsPtr->font = fontPtr->qdFont; + fsPtr->size = fontPtr->qdSize; + fsPtr->style = fontPtr->qdStyle; fsPtr->just = teCenter; } @@ -2173,72 +2465,55 @@ TkMacOSXInitControlFontStyle( * * TkMacOSXUseAntialiasedText -- * - * Enables or disables application-wide use of quickdraw - * antialiased text (where available). - * Sets up a linked tcl global boolean variable with write trace - * to allow disabling of antialiased text from tcl. + * Enables or disables application-wide use of antialiased text (where + * available). Sets up a linked Tcl global variable to allow + * disabling of antialiased text from tcl. + * The possible values for this variable are: + * + * -1 - Use system default as configurable in "System Prefs" -> "General". + * 0 - Unconditionally disable antialiasing. + * 1 - Unconditionally enable antialiasing. * * Results: - * TCL_OK if facility was sucessfully enabled/disabled. - * TCL_ERROR if an error occurred or if facility is not available. + * + * TCL_OK. * * Side effects: + * * None. * *---------------------------------------------------------------------- */ -static int TkMacOSXAntialiasedTextEnabled = FALSE; - -static char * -TkMacOSXAntialiasedTextVariableProc( - ClientData clientData, - Tcl_Interp *interp, - const char *name1, - const char *name2, - int flags) -{ - TkMacOSXUseAntialiasedText(interp, TkMacOSXAntialiasedTextEnabled); - return (char *) NULL; -} - -int +MODULE_SCOPE int TkMacOSXUseAntialiasedText( - Tcl_Interp *interp, - int enable) + Tcl_Interp * interp, /* The Tcl interpreter to receive the + * variable.*/ + int enable) /* Initial value. */ { static Boolean initialized = FALSE; - static UInt32 (*swaptextflags)(UInt32) = NULL; - if(!initialized) { - swaptextflags = TkMacOSXGetNamedSymbol("QD", "_QDSwapTextFlags"); - if (!swaptextflags) { - swaptextflags = TkMacOSXGetNamedSymbol("QD", "_SwapQDTextFlags"); - } + if (!initialized) { initialized = TRUE; - TkMacOSXAntialiasedTextEnabled = (swaptextflags ? enable : FALSE); if (Tcl_CreateNamespace(interp, "::tk::mac", NULL, NULL) == NULL) { Tcl_ResetResult(interp); } - if (Tcl_TraceVar(interp, "::tk::mac::antialiasedtext", - TCL_GLOBAL_ONLY | TCL_TRACE_WRITES, - TkMacOSXAntialiasedTextVariableProc, NULL) != TCL_OK) { - Tcl_ResetResult(interp); - } if (Tcl_LinkVar(interp, "::tk::mac::antialiasedtext", - (char *) &TkMacOSXAntialiasedTextEnabled, - TCL_LINK_BOOLEAN) != TCL_OK) { + (char *) &antialiasedTextEnabled, + TCL_LINK_INT) != TCL_OK) { Tcl_ResetResult(interp); } } - if (swaptextflags) { - swaptextflags(enable ? kQDUseCGTextRendering | kQDUseCGTextMetrics - : kQDUseTrueTypeScalerGlyphs); - TkMacOSXAntialiasedTextEnabled = enable; - return TCL_OK; - } else { - TkMacOSXAntialiasedTextEnabled = FALSE; - return TCL_ERROR; - } + antialiasedTextEnabled = enable; + return TCL_OK; } + +/* + * Local Variables: + * mode: c + * c-basic-offset: 4 + * fill-column: 79 + * coding: utf-8 + * End: + */ |