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-rw-r--r--generic/tkFont.c178
1 files changed, 84 insertions, 94 deletions
diff --git a/generic/tkFont.c b/generic/tkFont.c
index 749f64b..76895e3 100644
--- a/generic/tkFont.c
+++ b/generic/tkFont.c
@@ -10,13 +10,13 @@
* See the file "license.terms" for information on usage and redistribution of
* this file, and for a DISCLAIMER OF ALL WARRANTIES.
*
- * RCS: @(#) $Id: tkFont.c,v 1.62 2010/01/02 22:52:38 dkf Exp $
+ * RCS: @(#) $Id: tkFont.c,v 1.63 2010/01/03 16:24:13 dkf Exp $
*/
#include "tkInt.h"
#include "tkFont.h"
-#define ROUND16(x) ((short)((x) + 0.5))
+#define ROUND16(x) ((short)((x) + 0.5))
/*
* The following structure is used to keep track of all the fonts that exist
@@ -417,9 +417,8 @@ TkFontPkgFree(
TkFontInfo *fiPtr = mainPtr->fontInfoPtr;
Tcl_HashEntry *hPtr, *searchPtr;
Tcl_HashSearch search;
- int fontsLeft;
+ int fontsLeft = 0;
- fontsLeft = 0;
for (searchPtr = Tcl_FirstHashEntry(&fiPtr->fontCache, &search);
searchPtr != NULL;
searchPtr = Tcl_NextHashEntry(&search)) {
@@ -440,7 +439,7 @@ TkFontPkgFree(
hPtr = Tcl_FirstHashEntry(&fiPtr->namedTable, &search);
while (hPtr != NULL) {
- ckfree((char *) Tcl_GetHashValue(hPtr));
+ ckfree(Tcl_GetHashValue(hPtr));
hPtr = Tcl_NextHashEntry(&search);
}
Tcl_DeleteHashTable(&fiPtr->namedTable);
@@ -476,7 +475,7 @@ Tk_FontObjCmd(
{
int index;
Tk_Window tkwin = clientData;
- TkFontInfo *fiPtr;
+ TkFontInfo *fiPtr = ((TkWindow *) tkwin)->mainPtr->fontInfoPtr;
static const char *const optionStrings[] = {
"actual", "configure", "create", "delete",
"families", "measure", "metrics", "names",
@@ -487,8 +486,6 @@ Tk_FontObjCmd(
FONT_FAMILIES, FONT_MEASURE, FONT_METRICS, FONT_NAMES
};
- fiPtr = ((TkWindow *) tkwin)->mainPtr->fontInfoPtr;
-
if (objc < 2) {
Tcl_WrongNumArgs(interp, 1, objv, "option ?arg?");
return TCL_ERROR;
@@ -640,13 +637,12 @@ Tk_FontObjCmd(
return GetAttributeInfoObj(interp, &nfPtr->fa, objPtr);
}
case FONT_CREATE: {
- int skip, i;
+ int skip = 3, i;
const char *name;
char buf[16 + TCL_INTEGER_SPACE];
TkFontAttributes fa;
Tcl_HashEntry *namedHashPtr;
- skip = 3;
if (objc < 3) {
name = NULL;
} else {
@@ -701,9 +697,8 @@ Tk_FontObjCmd(
return result;
}
case FONT_FAMILIES: {
- int skip;
+ int skip = TkGetDisplayOf(interp, objc - 2, objv + 2, &tkwin);
- skip = TkGetDisplayOf(interp, objc - 2, objv + 2, &tkwin);
if (skip < 0) {
return TCL_ERROR;
}
@@ -726,7 +721,8 @@ Tk_FontObjCmd(
}
}
if (objc - skip != 4) {
- Tcl_WrongNumArgs(interp, 2, objv, "font ?-displayof window? text");
+ Tcl_WrongNumArgs(interp, 2, objv,
+ "font ?-displayof window? text");
return TCL_ERROR;
}
tkfont = Tk_AllocFontFromObj(interp, tkwin, objv[2]);
@@ -844,9 +840,8 @@ UpdateDependentFonts(
Tcl_HashEntry *cacheHashPtr;
Tcl_HashSearch search;
TkFont *fontPtr;
- NamedFont *nfPtr;
+ NamedFont *nfPtr = Tcl_GetHashValue(namedHashPtr);
- nfPtr = Tcl_GetHashValue(namedHashPtr);
if (nfPtr->refCount == 0) {
/*
* Well nobody's using this named font, so don't have to tell any
@@ -948,15 +943,12 @@ TkCreateNamedFont(
const char *name, /* Name for the new named font. */
TkFontAttributes *faPtr) /* Attributes for the new named font. */
{
- TkFontInfo *fiPtr;
+ TkFontInfo *fiPtr = ((TkWindow *) tkwin)->mainPtr->fontInfoPtr;
Tcl_HashEntry *namedHashPtr;
int isNew;
NamedFont *nfPtr;
- fiPtr = ((TkWindow *) tkwin)->mainPtr->fontInfoPtr;
-
namedHashPtr = Tcl_CreateHashEntry(&fiPtr->namedTable, name, &isNew);
-
if (!isNew) {
nfPtr = Tcl_GetHashValue(namedHashPtr);
if (nfPtr->deletePending == 0) {
@@ -1005,12 +997,10 @@ TkDeleteNamedFont(
Tk_Window tkwin, /* A window associated with interp. */
const char *name) /* Name for the new named font. */
{
- TkFontInfo *fiPtr;
+ TkFontInfo *fiPtr = ((TkWindow *) tkwin)->mainPtr->fontInfoPtr;
NamedFont *nfPtr;
Tcl_HashEntry *namedHashPtr;
- fiPtr = ((TkWindow *) tkwin)->mainPtr->fontInfoPtr;
-
namedHashPtr = Tcl_FindHashEntry(&fiPtr->namedTable, name);
if (namedHashPtr == NULL) {
if (interp) {
@@ -1061,7 +1051,7 @@ Tk_GetFont(
Tk_Font tkfont;
Tcl_Obj *strPtr;
- strPtr = Tcl_NewStringObj((char *) string, -1);
+ strPtr = Tcl_NewStringObj(string, -1);
Tcl_IncrRefCount(strPtr);
tkfont = Tk_AllocFontFromObj(interp, tkwin, strPtr);
Tcl_DecrRefCount(strPtr);
@@ -1097,19 +1087,17 @@ Tk_AllocFontFromObj(
Tcl_Obj *objPtr) /* Object describing font, as: named font,
* native format, or parseable string. */
{
- TkFontInfo *fiPtr;
+ TkFontInfo *fiPtr = ((TkWindow *) tkwin)->mainPtr->fontInfoPtr;
Tcl_HashEntry *cacheHashPtr, *namedHashPtr;
TkFont *fontPtr, *firstFontPtr, *oldFontPtr;
int isNew, descent;
NamedFont *nfPtr;
- fiPtr = ((TkWindow *) tkwin)->mainPtr->fontInfoPtr;
if (objPtr->typePtr != &tkFontObjType) {
SetFontFromAny(interp, objPtr);
}
oldFontPtr = objPtr->internalRep.twoPtrValue.ptr1;
-
if (oldFontPtr != NULL) {
if (oldFontPtr->resourceRefCount == 0) {
/*
@@ -1277,7 +1265,8 @@ Tk_AllocFontFromObj(
Tk_Font
Tk_GetFontFromObj(
- Tk_Window tkwin, /* The window that the font will be used in. */
+ Tk_Window tkwin, /* The window that the font will be used
+ * in. */
Tcl_Obj *objPtr) /* The object from which to get the font. */
{
TkFontInfo *fiPtr = ((TkWindow *) tkwin)->mainPtr->fontInfoPtr;
@@ -1289,7 +1278,6 @@ Tk_GetFontFromObj(
}
fontPtr = objPtr->internalRep.twoPtrValue.ptr1;
-
if (fontPtr != NULL) {
if (fontPtr->resourceRefCount == 0) {
/*
@@ -1393,9 +1381,8 @@ const char *
Tk_NameOfFont(
Tk_Font tkfont) /* Font whose name is desired. */
{
- TkFont *fontPtr;
+ TkFont *fontPtr = (TkFont *) tkfont;
- fontPtr = (TkFont *) tkfont;
return fontPtr->cacheHashPtr->key.string;
}
@@ -1420,13 +1407,12 @@ void
Tk_FreeFont(
Tk_Font tkfont) /* Font to be released. */
{
- TkFont *fontPtr, *prevPtr;
+ TkFont *fontPtr = (TkFont *) tkfont, *prevPtr;
NamedFont *nfPtr;
- if (tkfont == NULL) {
+ if (fontPtr == NULL) {
return;
}
- fontPtr = (TkFont *) tkfont;
fontPtr->resourceRefCount--;
if (fontPtr->resourceRefCount > 0) {
return;
@@ -1591,9 +1577,8 @@ Tk_FontId(
Tk_Font tkfont) /* Font that is going to be selected into
* GC. */
{
- TkFont *fontPtr;
+ TkFont *fontPtr = (TkFont *) tkfont;
- fontPtr = (TkFont *) tkfont;
return fontPtr->fid;
}
@@ -1665,13 +1650,12 @@ Tk_PostscriptFontName(
* which the name of the Postscript font that
* corresponds to tkfont will be appended. */
{
- TkFont *fontPtr;
+ TkFont *fontPtr = (TkFont *) tkfont;
Tk_Uid family, weightString, slantString;
char *src, *dest;
int upper, len;
len = Tcl_DStringLength(dsPtr);
- fontPtr = (TkFont *) tkfont;
/*
* Convert the case-insensitive Tk_Font family name to the case-sensitive
@@ -1897,11 +1881,9 @@ TkUnderlineCharsInContext(
int lastByte) /* Index of first byte after the last
* character. */
{
- TkFont *fontPtr;
+ TkFont *fontPtr = (TkFont *) tkfont;
int startX, endX;
- fontPtr = (TkFont *) tkfont;
-
TkpMeasureCharsInContext(tkfont, string, numBytes, 0, firstByte, -1, 0,
&startX);
TkpMeasureCharsInContext(tkfont, string, numBytes, 0, lastByte, -1, 0,
@@ -1960,7 +1942,7 @@ Tk_ComputeTextLayout(
int *widthPtr, /* Filled with width of string. */
int *heightPtr) /* Filled with height of string. */
{
- TkFont *fontPtr;
+ TkFont *fontPtr = (TkFont *) tkfont;
const char *start, *end, *special;
int n, y, bytesThisChunk, maxChunks, curLine, layoutHeight;
int baseline, height, curX, newX, maxWidth, *lineLengths;
@@ -1971,7 +1953,6 @@ Tk_ComputeTextLayout(
Tcl_DStringInit(&lineBuffer);
- fontPtr = (TkFont *) tkfont;
if ((fontPtr == NULL) || (string == NULL)) {
if (widthPtr != NULL) {
*widthPtr = 0;
@@ -2280,7 +2261,8 @@ void
Tk_DrawTextLayout(
Display *display, /* Display on which to draw. */
Drawable drawable, /* Window or pixmap in which to draw. */
- GC gc, /* Graphics context to use for drawing text. */
+ GC gc, /* Graphics context to use for drawing
+ * text. */
Tk_TextLayout layout, /* Layout information, from a previous call to
* Tk_ComputeTextLayout(). */
int x, int y, /* Upper-left hand corner of rectangle in
@@ -2337,7 +2319,8 @@ void
TkDrawAngledTextLayout(
Display *display, /* Display on which to draw. */
Drawable drawable, /* Window or pixmap in which to draw. */
- GC gc, /* Graphics context to use for drawing text. */
+ GC gc, /* Graphics context to use for drawing
+ * text. */
Tk_TextLayout layout, /* Layout information, from a previous call to
* Tk_ComputeTextLayout(). */
int x, int y, /* Upper-left hand corner of rectangle in
@@ -2454,7 +2437,8 @@ void
TkUnderlineAngledTextLayout(
Display *display, /* Display on which to draw. */
Drawable drawable, /* Window or pixmap in which to draw. */
- GC gc, /* Graphics context to use for drawing text. */
+ GC gc, /* Graphics context to use for drawing
+ * text. */
Tk_TextLayout layout, /* Layout information, from a previous call to
* Tk_ComputeTextLayout(). */
int x, int y, /* Upper-left hand corner of rectangle in
@@ -2552,7 +2536,7 @@ Tk_PointToChar(
* to the upper-left corner of the text
* layout. */
{
- TextLayout *layoutPtr;
+ TextLayout *layoutPtr = (TextLayout *) layout;
LayoutChunk *chunkPtr, *lastPtr;
TkFont *fontPtr;
int i, n, dummy, baseline, pos, numChars;
@@ -2570,7 +2554,6 @@ Tk_PointToChar(
* Find which line contains the point.
*/
- layoutPtr = (TextLayout *) layout;
fontPtr = (TkFont *) layoutPtr->tkfont;
lastPtr = chunkPtr = layoutPtr->chunks;
numChars = 0;
@@ -2700,7 +2683,7 @@ Tk_CharBbox(
* bounding box for the character specified by
* index, if non-NULL. */
{
- TextLayout *layoutPtr;
+ TextLayout *layoutPtr = (TextLayout *) layout;
LayoutChunk *chunkPtr;
int i, x = 0, w;
Tk_Font tkfont;
@@ -2711,7 +2694,6 @@ Tk_CharBbox(
return 0;
}
- layoutPtr = (TextLayout *) layout;
chunkPtr = layoutPtr->chunks;
tkfont = layoutPtr->tkfont;
fontPtr = (TkFont *) tkfont;
@@ -2812,11 +2794,10 @@ Tk_DistanceToTextLayout(
* (in pixels). */
{
int i, x1, x2, y1, y2, xDiff, yDiff, dist, minDist, ascent, descent;
+ TextLayout *layoutPtr = (TextLayout *) layout;
LayoutChunk *chunkPtr;
- TextLayout *layoutPtr;
TkFont *fontPtr;
- layoutPtr = (TextLayout *) layout;
fontPtr = (TkFont *) layoutPtr->tkfont;
ascent = fontPtr->fm.ascent;
descent = fontPtr->fm.descent;
@@ -2900,7 +2881,7 @@ Tk_IntersectTextLayout(
* rectangular area, in pixels. */
{
int result, i, x1, y1, x2, y2;
- TextLayout *layoutPtr;
+ TextLayout *layoutPtr = (TextLayout *) layout;
LayoutChunk *chunkPtr;
TkFont *fontPtr;
int left, top, right, bottom;
@@ -2912,7 +2893,6 @@ Tk_IntersectTextLayout(
* and see if they were all inside or all outside.
*/
- layoutPtr = (TextLayout *) layout;
chunkPtr = layoutPtr->chunks;
fontPtr = (TkFont *) layoutPtr->tkfont;
@@ -3006,9 +2986,7 @@ static inline int
sign(
double value)
{
- if (value < 0.0) return -1;
- if (value > 0.0) return 1;
- return 0;
+ return (value < 0.0) ? -1 : (value > 0.0) ? 1 : 0;
}
static inline int
@@ -3149,6 +3127,7 @@ TkIntersectAngledTextLayout(
for (i=0 ; i<layoutPtr->numChunks ; i++,chunkPtr++) {
double cx[4], cy[4];
+
if (chunkPtr->start[0] == '\n') {
/*
* Newline characters are not counted when computing area
@@ -3199,6 +3178,7 @@ TkIntersectAngledTextLayout(
for (j=0 ; j<4 ; j++) {
int k = (j+1) % 4;
+
if ( SidesIntersect(rx[j],ry[j], rx[k],ry[k], x1,y1, x2,y1) ||
SidesIntersect(rx[j],ry[j], rx[k],ry[k], x2,y1, x2,y2) ||
SidesIntersect(rx[j],ry[j], rx[k],ry[k], x2,y2, x1,y2) ||
@@ -3258,16 +3238,14 @@ Tk_TextLayoutToPostscript(
Tcl_Interp *interp, /* Filled with Postscript code. */
Tk_TextLayout layout) /* The layout to be rendered. */
{
+ TextLayout *layoutPtr = (TextLayout *) layout;
#define MAXUSE 128
- char buf[MAXUSE+30], uindex[5] = "\0\0\0\0", one_char[5];
+ char buf[MAXUSE+30];
LayoutChunk *chunkPtr;
- int i, j, used, c, baseline, charsize;
+ int i, j, used, baseline, charsize;
Tcl_UniChar ch;
- const char *p, *last_p, *glyphname;
- TextLayout *layoutPtr;
- int bytecount=0;
+ const char *p, *glyphname;
- layoutPtr = (TextLayout *) layout;
chunkPtr = layoutPtr->chunks;
baseline = chunkPtr->y;
used = 0;
@@ -3291,54 +3269,66 @@ Tk_TextLayoutToPostscript(
p = chunkPtr->start;
for (j = 0; j < chunkPtr->numDisplayChars; j++) {
/*
- * INTL: For now we just treat the characters as binary data
- * and display the lower byte. Eventually this should be
- * revised to handle international postscript fonts.
+ * INTL: We only handle symbols that have an encoding as a
+ * flyph from the standard set defined by Adobe. The rest get
+ * punted. Eventually this should be revised to handle more
+ * sophsticiated international postscript fonts.
*/
- last_p = p;
- p += (charsize = Tcl_UtfToUniChar(p,&ch));
- Tcl_UtfToExternal(interp, NULL, last_p, charsize, 0, NULL,
- one_char, 4, NULL, &bytecount, NULL);
- if (bytecount == 1) {
- c = UCHAR(one_char[0]);
- /* c = UCHAR( ch & 0xFF) */;
- if ((c == '(') || (c == ')') || (c == '\\') || (c < 0x20)
- || (c >= UCHAR(0x7f))) {
- /*
- * Tricky point: the "03" is necessary in the sprintf
- * below, so that a full three digits of octal are
- * always generated. Without the "03", a number
- * following this sequence could be interpreted by
- * Postscript as part of this sequence.
- */
+ charsize = Tcl_UtfToUniChar(p, &ch);
+ p += charsize;
- sprintf(buf + used, "\\%03o", c);
- used += 4;
- } else {
- buf[used++] = c;
- }
+ if ((ch == '(') || (ch == ')') || (ch == '\\')
+ || (ch < 0x20)) {
+ /*
+ * Tricky point: the "03" is necessary in the sprintf
+ * below, so that a full three digits of octal are always
+ * generated. Without the "03", a number following this
+ * sequence could be interpreted by Postscript as part of
+ * this sequence.
+ */
+
+ sprintf(buf + used, "\\%03o", ch);
+ used += 4;
+ } else if (ch <= 0x7f) {
+ /*
+ * Normal ASCII character.
+ */
+
+ buf[used++] = ch;
} else {
+ char uindex[5];
+
/*
- * This character doesn't belong to system character set.
- * So, we must use full glyph name.
+ * This character doesn't belong to the ASCII character
+ * set, so we use the full glyph name.
*/
sprintf(uindex, "%04X", ch); /* endianness? */
- glyphname = Tcl_GetVar2(interp,"::tk::psglyphs",uindex,0);
+ glyphname = Tcl_GetVar2(interp, "::tk::psglyphs", uindex,
+ 0);
if (glyphname) {
- if (used > 0 && buf [used-1] == '(') {
- --used;
+ if (used > 0 && buf[used-1] == '(') {
+ used--;
} else {
buf[used++] = ')';
}
buf[used++] = '/';
- while ((*glyphname) && (used < (MAXUSE+27))) {
- buf[used++] = *glyphname++ ;
+ while ((*glyphname) && (used < MAXUSE+27)) {
+ buf[used++] = *glyphname++;
}
buf[used++] = '(';
- }
+ } else {
+ /*
+ * No known mapping for the character into the space
+ * of PostScript glyphs. Ignore it. :-(
+ */
+#ifdef TK_DEBUG_POSTSCRIPT_OUTPUT
+ fprintf(stderr, "Warning: no mapping to PostScript "
+ "glyphs for \\u%04x\n", ch);
+#endif
+ }
}
if (used >= MAXUSE) {
buf[used] = '\0';
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