diff options
Diffstat (limited to 'generic/tkTextWind.c')
| -rw-r--r-- | generic/tkTextWind.c | 1318 |
1 files changed, 767 insertions, 551 deletions
diff --git a/generic/tkTextWind.c b/generic/tkTextWind.c index 9f2582e..ecafd4e 100644 --- a/generic/tkTextWind.c +++ b/generic/tkTextWind.c @@ -1,47 +1,37 @@ -/* +/* * tkTextWind.c -- * - * This file contains code that allows arbitrary windows to be - * nested inside text widgets. It also implements the "window" - * widget command for texts. + * This file contains code that allows arbitrary windows to be nested + * inside text widgets. It also implements the "window" widget command + * for texts. * * Copyright (c) 1994 The Regents of the University of California. * Copyright (c) 1994-1997 Sun Microsystems, Inc. * - * See the file "license.terms" for information on usage and redistribution - * of this file, and for a DISCLAIMER OF ALL WARRANTIES. + * See the file "license.terms" for information on usage and redistribution of + * this file, and for a DISCLAIMER OF ALL WARRANTIES. */ -#include "tk.h" -#include "tkText.h" #include "tkPort.h" +#include "tkText.h" /* - * The following structure is the official type record for the - * embedded window geometry manager: + * The following structure is the official type record for the embedded window + * geometry manager: */ -static void EmbWinRequestProc _ANSI_ARGS_((ClientData clientData, - Tk_Window tkwin)); -static void EmbWinLostSlaveProc _ANSI_ARGS_((ClientData clientData, - Tk_Window tkwin)); +static void EmbWinRequestProc(ClientData clientData, + Tk_Window tkwin); +static void EmbWinLostSlaveProc(ClientData clientData, + Tk_Window tkwin); -static Tk_GeomMgr textGeomType = { +static const Tk_GeomMgr textGeomType = { "text", /* name */ EmbWinRequestProc, /* requestProc */ EmbWinLostSlaveProc, /* lostSlaveProc */ }; /* - * Definitions for alignment values: - */ - -#define ALIGN_BOTTOM 0 -#define ALIGN_CENTER 1 -#define ALIGN_TOP 2 -#define ALIGN_BASELINE 3 - -/* * Macro that determines the size of an embedded window segment: */ @@ -49,85 +39,79 @@ static Tk_GeomMgr textGeomType = { + sizeof(TkTextEmbWindow))) /* - * Prototypes for procedures defined in this file: + * Prototypes for functions defined in this file: */ -static int AlignParseProc _ANSI_ARGS_((ClientData clientData, - Tcl_Interp *interp, Tk_Window tkwin, - CONST char *value, char *widgRec, int offset)); -static char * AlignPrintProc _ANSI_ARGS_((ClientData clientData, - Tk_Window tkwin, char *widgRec, int offset, - Tcl_FreeProc **freeProcPtr)); -static TkTextSegment * EmbWinCleanupProc _ANSI_ARGS_((TkTextSegment *segPtr, - TkTextLine *linePtr)); -static void EmbWinCheckProc _ANSI_ARGS_((TkTextSegment *segPtr, - TkTextLine *linePtr)); -static void EmbWinBboxProc _ANSI_ARGS_((TkTextDispChunk *chunkPtr, - int index, int y, int lineHeight, int baseline, - int *xPtr, int *yPtr, int *widthPtr, - int *heightPtr)); -static int EmbWinConfigure _ANSI_ARGS_((TkText *textPtr, - TkTextSegment *ewPtr, int argc, CONST char **argv)); -static void EmbWinDelayedUnmap _ANSI_ARGS_(( - ClientData clientData)); -static int EmbWinDeleteProc _ANSI_ARGS_((TkTextSegment *segPtr, - TkTextLine *linePtr, int treeGone)); -static void EmbWinDisplayProc _ANSI_ARGS_(( - TkTextDispChunk *chunkPtr, int x, int y, - int lineHeight, int baseline, Display *display, - Drawable dst, int screenY)); -static int EmbWinLayoutProc _ANSI_ARGS_((TkText *textPtr, +static TkTextSegment * EmbWinCleanupProc(TkTextSegment *segPtr, + TkTextLine *linePtr); +static void EmbWinCheckProc(TkTextSegment *segPtr, + TkTextLine *linePtr); +static void EmbWinBboxProc(TkText *textPtr, + TkTextDispChunk *chunkPtr, int index, int y, + int lineHeight, int baseline, int *xPtr,int *yPtr, + int *widthPtr, int *heightPtr); +static int EmbWinConfigure(TkText *textPtr, TkTextSegment *ewPtr, + int objc, Tcl_Obj *const objv[]); +static void EmbWinDelayedUnmap(ClientData clientData); +static int EmbWinDeleteProc(TkTextSegment *segPtr, + TkTextLine *linePtr, int treeGone); +static int EmbWinLayoutProc(TkText *textPtr, TkTextIndex *indexPtr, TkTextSegment *segPtr, - int offset, int maxX, int maxChars, - int noCharsYet, TkWrapMode wrapMode, - TkTextDispChunk *chunkPtr)); -static void EmbWinStructureProc _ANSI_ARGS_((ClientData clientData, - XEvent *eventPtr)); -static void EmbWinUndisplayProc _ANSI_ARGS_((TkText *textPtr, - TkTextDispChunk *chunkPtr)); + int offset, int maxX, int maxChars,int noCharsYet, + TkWrapMode wrapMode, TkTextDispChunk *chunkPtr); +static void EmbWinStructureProc(ClientData clientData, + XEvent *eventPtr); +static void EmbWinUndisplayProc(TkText *textPtr, + TkTextDispChunk *chunkPtr); +static TkTextEmbWindowClient* EmbWinGetClient(const TkText *textPtr, + TkTextSegment *ewPtr); /* * The following structure declares the "embedded window" segment type. */ -static Tk_SegType tkTextEmbWindowType = { - "window", /* name */ - 0, /* leftGravity */ - (Tk_SegSplitProc *) NULL, /* splitProc */ - EmbWinDeleteProc, /* deleteProc */ - EmbWinCleanupProc, /* cleanupProc */ - (Tk_SegLineChangeProc *) NULL, /* lineChangeProc */ - EmbWinLayoutProc, /* layoutProc */ - EmbWinCheckProc /* checkProc */ +static const Tk_SegType tkTextEmbWindowType = { + "window", /* name */ + 0, /* leftGravity */ + NULL, /* splitProc */ + EmbWinDeleteProc, /* deleteProc */ + EmbWinCleanupProc, /* cleanupProc */ + NULL, /* lineChangeProc */ + EmbWinLayoutProc, /* layoutProc */ + EmbWinCheckProc /* checkProc */ +}; + +/* + * Definitions for alignment values: + */ + +static const char *alignStrings[] = { + "baseline", "bottom", "center", "top", NULL }; +typedef enum { + ALIGN_BASELINE, ALIGN_BOTTOM, ALIGN_CENTER, ALIGN_TOP +} alignMode; + /* * Information used for parsing window configuration options: */ -static Tk_CustomOption alignOption = {AlignParseProc, AlignPrintProc, - (ClientData) NULL}; - -static Tk_ConfigSpec configSpecs[] = { - {TK_CONFIG_CUSTOM, "-align", (char *) NULL, (char *) NULL, - "center", 0, TK_CONFIG_DONT_SET_DEFAULT, &alignOption}, - {TK_CONFIG_STRING, "-create", (char *) NULL, (char *) NULL, - (char *) NULL, Tk_Offset(TkTextEmbWindow, create), - TK_CONFIG_DONT_SET_DEFAULT|TK_CONFIG_NULL_OK}, - {TK_CONFIG_INT, "-padx", (char *) NULL, (char *) NULL, - "0", Tk_Offset(TkTextEmbWindow, padX), - TK_CONFIG_DONT_SET_DEFAULT}, - {TK_CONFIG_INT, "-pady", (char *) NULL, (char *) NULL, - "0", Tk_Offset(TkTextEmbWindow, padY), - TK_CONFIG_DONT_SET_DEFAULT}, - {TK_CONFIG_BOOLEAN, "-stretch", (char *) NULL, (char *) NULL, - "0", Tk_Offset(TkTextEmbWindow, stretch), - TK_CONFIG_DONT_SET_DEFAULT}, - {TK_CONFIG_WINDOW, "-window", (char *) NULL, (char *) NULL, - (char *) NULL, Tk_Offset(TkTextEmbWindow, tkwin), - TK_CONFIG_DONT_SET_DEFAULT|TK_CONFIG_NULL_OK}, - {TK_CONFIG_END, (char *) NULL, (char *) NULL, (char *) NULL, - (char *) NULL, 0, 0} +static const Tk_OptionSpec optionSpecs[] = { + {TK_OPTION_STRING_TABLE, "-align", NULL, NULL, + "center", -1, Tk_Offset(TkTextEmbWindow, align), + 0, (ClientData) alignStrings, 0}, + {TK_OPTION_STRING, "-create", NULL, NULL, + NULL, -1, Tk_Offset(TkTextEmbWindow, create), TK_OPTION_NULL_OK, 0, 0}, + {TK_OPTION_PIXELS, "-padx", NULL, NULL, + "0", -1, Tk_Offset(TkTextEmbWindow, padX), 0, 0, 0}, + {TK_OPTION_PIXELS, "-pady", NULL, NULL, + "0", -1, Tk_Offset(TkTextEmbWindow, padY), 0, 0, 0}, + {TK_OPTION_BOOLEAN, "-stretch", NULL, NULL, + "0", -1, Tk_Offset(TkTextEmbWindow, stretch), 0, 0, 0}, + {TK_OPTION_WINDOW, "-window", NULL, NULL, + NULL, -1, Tk_Offset(TkTextEmbWindow, tkwin), TK_OPTION_NULL_OK, 0, 0}, + {TK_OPTION_END} }; /* @@ -135,9 +119,8 @@ static Tk_ConfigSpec configSpecs[] = { * * TkTextWindowCmd -- * - * This procedure implements the "window" widget command - * for text widgets. See the user documentation for details - * on what it does. + * This function implements the "window" widget command for text widgets. + * See the user documentation for details on what it does. * * Results: * A standard Tcl result or error. @@ -149,100 +132,154 @@ static Tk_ConfigSpec configSpecs[] = { */ int -TkTextWindowCmd(textPtr, interp, argc, argv) - register TkText *textPtr; /* Information about text widget. */ - Tcl_Interp *interp; /* Current interpreter. */ - int argc; /* Number of arguments. */ - CONST char **argv; /* Argument strings. Someone else has already +TkTextWindowCmd( + register TkText *textPtr, /* Information about text widget. */ + Tcl_Interp *interp, /* Current interpreter. */ + int objc, /* Number of arguments. */ + Tcl_Obj *const objv[]) /* Argument objects. Someone else has already * parsed this command enough to know that - * argv[1] is "window". */ + * objv[1] is "window". */ { - size_t length; + int optionIndex; + static const char *windOptionStrings[] = { + "cget", "configure", "create", "names", NULL + }; + enum windOptions { + WIND_CGET, WIND_CONFIGURE, WIND_CREATE, WIND_NAMES + }; register TkTextSegment *ewPtr; - if (argc < 3) { - Tcl_AppendResult(interp, "wrong # args: should be \"", - argv[0], " window option ?arg arg ...?\"", (char *) NULL); + if (objc < 3) { + Tcl_WrongNumArgs(interp, 2, objv, "option ?arg arg ...?"); + return TCL_ERROR; + } + if (Tcl_GetIndexFromObj(interp, objv[2], windOptionStrings, + "window option", 0, &optionIndex) != TCL_OK) { return TCL_ERROR; } - length = strlen(argv[2]); - if ((strncmp(argv[2], "cget", length) == 0) && (length >= 2)) { + switch ((enum windOptions) optionIndex) { + case WIND_CGET: { TkTextIndex index; TkTextSegment *ewPtr; + Tcl_Obj *objPtr; + TkTextEmbWindowClient *client; - if (argc != 5) { - Tcl_AppendResult(interp, "wrong # args: should be \"", - argv[0], " window cget index option\"", - (char *) NULL); + if (objc != 5) { + Tcl_WrongNumArgs(interp, 3, objv, "index option"); return TCL_ERROR; } - if (TkTextGetIndex(interp, textPtr, argv[3], &index) != TCL_OK) { + if (TkTextGetObjIndex(interp, textPtr, objv[3], &index) != TCL_OK) { return TCL_ERROR; } - ewPtr = TkTextIndexToSeg(&index, (int *) NULL); + ewPtr = TkTextIndexToSeg(&index, NULL); if (ewPtr->typePtr != &tkTextEmbWindowType) { Tcl_AppendResult(interp, "no embedded window at index \"", - argv[3], "\"", (char *) NULL); + Tcl_GetString(objv[3]), "\"", NULL); + return TCL_ERROR; + } + + /* + * Copy over client specific value before querying. + */ + + client = EmbWinGetClient(textPtr, ewPtr); + if (client != NULL) { + ewPtr->body.ew.tkwin = client->tkwin; + } else { + ewPtr->body.ew.tkwin = NULL; + } + + objPtr = Tk_GetOptionValue(interp, (char *) &ewPtr->body.ew, + ewPtr->body.ew.optionTable, objv[4], textPtr->tkwin); + if (objPtr == NULL) { return TCL_ERROR; } - return Tk_ConfigureValue(interp, textPtr->tkwin, configSpecs, - (char *) &ewPtr->body.ew, argv[4], 0); - } else if ((strncmp(argv[2], "configure", length) == 0) && (length >= 2)) { + Tcl_SetObjResult(interp, objPtr); + return TCL_OK; + } + case WIND_CONFIGURE: { TkTextIndex index; TkTextSegment *ewPtr; - if (argc < 4) { - Tcl_AppendResult(interp, "wrong # args: should be \"", - argv[0], " window configure index ?option value ...?\"", - (char *) NULL); + if (objc < 4) { + Tcl_WrongNumArgs(interp, 3, objv, "index ?option value ...?"); return TCL_ERROR; } - if (TkTextGetIndex(interp, textPtr, argv[3], &index) != TCL_OK) { + if (TkTextGetObjIndex(interp, textPtr, objv[3], &index) != TCL_OK) { return TCL_ERROR; } - ewPtr = TkTextIndexToSeg(&index, (int *) NULL); + ewPtr = TkTextIndexToSeg(&index, NULL); if (ewPtr->typePtr != &tkTextEmbWindowType) { Tcl_AppendResult(interp, "no embedded window at index \"", - argv[3], "\"", (char *) NULL); + Tcl_GetString(objv[3]), "\"", NULL); return TCL_ERROR; } - if (argc == 4) { - return Tk_ConfigureInfo(interp, textPtr->tkwin, configSpecs, - (char *) &ewPtr->body.ew, (char *) NULL, 0); - } else if (argc == 5) { - return Tk_ConfigureInfo(interp, textPtr->tkwin, configSpecs, - (char *) &ewPtr->body.ew, argv[4], 0); + if (objc <= 5) { + TkTextEmbWindowClient *client; + Tcl_Obj* objPtr; + + /* + * Copy over client specific value before querying. + */ + + client = EmbWinGetClient(textPtr, ewPtr); + if (client != NULL) { + ewPtr->body.ew.tkwin = client->tkwin; + } else { + ewPtr->body.ew.tkwin = NULL; + } + + objPtr = Tk_GetOptionInfo(interp, (char *) &ewPtr->body.ew, + ewPtr->body.ew.optionTable, (objc == 5) ? objv[4] : NULL, + textPtr->tkwin); + if (objPtr == NULL) { + return TCL_ERROR; + } + Tcl_SetObjResult(interp, objPtr); + return TCL_OK; } else { - TkTextChanged(textPtr, &index, &index); - return EmbWinConfigure(textPtr, ewPtr, argc-4, argv+4); + TkTextChanged(textPtr->sharedTextPtr, NULL, &index, &index); + + /* + * It's probably not true that all window configuration can change + * the line height, so we could be more efficient here and only + * call this when necessary. + */ + + TkTextInvalidateLineMetrics(textPtr->sharedTextPtr, NULL, + index.linePtr, 0, TK_TEXT_INVALIDATE_ONLY); + return EmbWinConfigure(textPtr, ewPtr, objc-4, objv+4); } - } else if ((strncmp(argv[2], "create", length) == 0) && (length >= 2)) { + } + case WIND_CREATE: { TkTextIndex index; int lineIndex; + TkTextEmbWindowClient *client; + int res; /* - * Add a new window. Find where to put the new window, and - * mark that position for redisplay. + * Add a new window. Find where to put the new window, and mark that + * position for redisplay. */ - if (argc < 4) { - Tcl_AppendResult(interp, "wrong # args: should be \"", - argv[0], " window create index ?option value ...?\"", - (char *) NULL); + if (objc < 4) { + Tcl_WrongNumArgs(interp, 3, objv, "index ?option value ...?"); return TCL_ERROR; } - if (TkTextGetIndex(interp, textPtr, argv[3], &index) != TCL_OK) { + if (TkTextGetObjIndex(interp, textPtr, objv[3], &index) != TCL_OK) { return TCL_ERROR; } /* * Don't allow insertions on the last (dummy) line of the text. */ - - lineIndex = TkBTreeLineIndex(index.linePtr); - if (lineIndex == TkBTreeNumLines(textPtr->tree)) { + + lineIndex = TkBTreeLinesTo(textPtr, index.linePtr); + if (lineIndex == TkBTreeNumLines(textPtr->sharedTextPtr->tree, + textPtr)) { lineIndex--; - TkTextMakeByteIndex(textPtr->tree, lineIndex, 1000000, &index); + TkTextMakeByteIndex(textPtr->sharedTextPtr->tree, textPtr, + lineIndex, 1000000, &index); } /* @@ -252,49 +289,61 @@ TkTextWindowCmd(textPtr, interp, argc, argv) ewPtr = (TkTextSegment *) ckalloc(EW_SEG_SIZE); ewPtr->typePtr = &tkTextEmbWindowType; ewPtr->size = 1; - ewPtr->body.ew.textPtr = textPtr; + ewPtr->body.ew.sharedTextPtr = textPtr->sharedTextPtr; ewPtr->body.ew.linePtr = NULL; ewPtr->body.ew.tkwin = NULL; ewPtr->body.ew.create = NULL; ewPtr->body.ew.align = ALIGN_CENTER; ewPtr->body.ew.padX = ewPtr->body.ew.padY = 0; ewPtr->body.ew.stretch = 0; - ewPtr->body.ew.chunkCount = 0; - ewPtr->body.ew.displayed = 0; + ewPtr->body.ew.optionTable = Tk_CreateOptionTable(interp, optionSpecs); + + client = (TkTextEmbWindowClient *) + ckalloc(sizeof(TkTextEmbWindowClient)); + client->next = NULL; + client->textPtr = textPtr; + client->tkwin = NULL; + client->chunkCount = 0; + client->displayed = 0; + client->parent = ewPtr; + ewPtr->body.ew.clients = client; /* - * Link the segment into the text widget, then configure it (delete - * it again if the configuration fails). + * Link the segment into the text widget, then configure it (delete it + * again if the configuration fails). */ - TkTextChanged(textPtr, &index, &index); + TkTextChanged(textPtr->sharedTextPtr, NULL, &index, &index); TkBTreeLinkSegment(ewPtr, &index); - if (EmbWinConfigure(textPtr, ewPtr, argc-4, argv+4) != TCL_OK) { + res = EmbWinConfigure(textPtr, ewPtr, objc-4, objv+4); + client->tkwin = ewPtr->body.ew.tkwin; + if (res != TCL_OK) { TkTextIndex index2; - TkTextIndexForwChars(&index, 1, &index2); - TkBTreeDeleteChars(&index, &index2); + TkTextIndexForwChars(NULL, &index, 1, &index2, COUNT_INDICES); + TkBTreeDeleteIndexRange(textPtr->sharedTextPtr->tree, &index, + &index2); return TCL_ERROR; } - } else if (strncmp(argv[2], "names", length) == 0) { + TkTextInvalidateLineMetrics(textPtr->sharedTextPtr, NULL, + index.linePtr, 0, TK_TEXT_INVALIDATE_ONLY); + break; + } + case WIND_NAMES: { Tcl_HashSearch search; Tcl_HashEntry *hPtr; - if (argc != 3) { - Tcl_AppendResult(interp, "wrong # args: should be \"", - argv[0], " window names\"", (char *) NULL); + if (objc != 3) { + Tcl_WrongNumArgs(interp, 3, objv, NULL); return TCL_ERROR; } - for (hPtr = Tcl_FirstHashEntry(&textPtr->windowTable, &search); - hPtr != NULL; hPtr = Tcl_NextHashEntry(&search)) { + for (hPtr = Tcl_FirstHashEntry(&textPtr->sharedTextPtr->windowTable, + &search); hPtr != NULL; hPtr = Tcl_NextHashEntry(&search)) { Tcl_AppendElement(interp, - Tcl_GetHashKey(&textPtr->markTable, hPtr)); + Tcl_GetHashKey(&textPtr->sharedTextPtr->markTable, hPtr)); } - } else { - Tcl_AppendResult(interp, "bad window option \"", argv[2], - "\": must be cget, configure, create, or names", - (char *) NULL); - return TCL_ERROR; + break; + } } return TCL_OK; } @@ -304,76 +353,97 @@ TkTextWindowCmd(textPtr, interp, argc, argv) * * EmbWinConfigure -- * - * This procedure is called to handle configuration options - * for an embedded window, using an argc/argv list. + * This function is called to handle configuration options for an + * embedded window, using an objc/objv list. * * Results: - * The return value is a standard Tcl result. If TCL_ERROR is - * returned, then the interp's result contains an error message.. + * The return value is a standard Tcl result. If TCL_ERROR is returned, + * then the interp's result contains an error message.. * * Side effects: - * Configuration information for the embedded window changes, - * such as alignment, stretching, or name of the embedded - * window. + * Configuration information for the embedded window changes, such as + * alignment, stretching, or name of the embedded window. + * + * Note that this function may leave widget specific client information + * with a NULL tkwin attached to ewPtr. While we could choose to clean up + * the client data structure here, there is no need to do so, and it is + * likely that the user is going to adjust the tkwin again soon. * *-------------------------------------------------------------- */ static int -EmbWinConfigure(textPtr, ewPtr, argc, argv) - TkText *textPtr; /* Information about text widget that - * contains embedded window. */ - TkTextSegment *ewPtr; /* Embedded window to be configured. */ - int argc; /* Number of strings in argv. */ - CONST char **argv; /* Array of strings describing configuration +EmbWinConfigure( + TkText *textPtr, /* Information about text widget that contains + * embedded window. */ + TkTextSegment *ewPtr, /* Embedded window to be configured. */ + int objc, /* Number of strings in objv. */ + Tcl_Obj *const objv[]) /* Array of objects describing configuration * options. */ { Tk_Window oldWindow; - Tcl_HashEntry *hPtr; - int new; + TkTextEmbWindowClient *client; + + /* + * Copy over client specific value before querying or setting. + */ + + client = EmbWinGetClient(textPtr, ewPtr); + if (client != NULL) { + ewPtr->body.ew.tkwin = client->tkwin; + } else { + ewPtr->body.ew.tkwin = NULL; + } oldWindow = ewPtr->body.ew.tkwin; - if (Tk_ConfigureWidget(textPtr->interp, textPtr->tkwin, configSpecs, - argc, argv, (char *) &ewPtr->body.ew, TK_CONFIG_ARGV_ONLY) - != TCL_OK) { + if (Tk_SetOptions(textPtr->interp, (char *) &ewPtr->body.ew, + ewPtr->body.ew.optionTable, objc, objv, textPtr->tkwin, NULL, + NULL) != TCL_OK) { return TCL_ERROR; } + if (oldWindow != ewPtr->body.ew.tkwin) { if (oldWindow != NULL) { - Tcl_DeleteHashEntry(Tcl_FindHashEntry(&textPtr->windowTable, + Tcl_DeleteHashEntry(Tcl_FindHashEntry( + &textPtr->sharedTextPtr->windowTable, Tk_PathName(oldWindow))); Tk_DeleteEventHandler(oldWindow, StructureNotifyMask, - EmbWinStructureProc, (ClientData) ewPtr); - Tk_ManageGeometry(oldWindow, (Tk_GeomMgr *) NULL, - (ClientData) NULL); + EmbWinStructureProc, (ClientData) client); + Tk_ManageGeometry(oldWindow, NULL, (ClientData) NULL); if (textPtr->tkwin != Tk_Parent(oldWindow)) { Tk_UnmaintainGeometry(oldWindow, textPtr->tkwin); } else { Tk_UnmapWindow(oldWindow); } } + if (client != NULL) { + client->tkwin = NULL; + } if (ewPtr->body.ew.tkwin != NULL) { Tk_Window ancestor, parent; + Tcl_HashEntry *hPtr; + int isNew; /* - * Make sure that the text is either the parent of the - * embedded window or a descendant of that parent. Also, - * don't allow a top-level window to be managed inside - * a text. + * Make sure that the text is either the parent of the embedded + * window or a descendant of that parent. Also, don't allow a + * top-level window to be managed inside a text. */ parent = Tk_Parent(ewPtr->body.ew.tkwin); - for (ancestor = textPtr->tkwin; ; - ancestor = Tk_Parent(ancestor)) { + for (ancestor = textPtr->tkwin; ; ancestor = Tk_Parent(ancestor)) { if (ancestor == parent) { break; } if (Tk_TopWinHierarchy(ancestor)) { - badMaster: + badMaster: Tcl_AppendResult(textPtr->interp, "can't embed ", Tk_PathName(ewPtr->body.ew.tkwin), " in ", - Tk_PathName(textPtr->tkwin), (char *) NULL); + Tk_PathName(textPtr->tkwin), NULL); ewPtr->body.ew.tkwin = NULL; + if (client != NULL) { + client->tkwin = NULL; + } return TCL_ERROR; } } @@ -382,28 +452,43 @@ EmbWinConfigure(textPtr, ewPtr, argc, argv) goto badMaster; } + if (client == NULL) { + /* + * Have to make the new client. + */ + + client = (TkTextEmbWindowClient *) + ckalloc(sizeof(TkTextEmbWindowClient)); + client->next = ewPtr->body.ew.clients; + client->textPtr = textPtr; + client->tkwin = NULL; + client->chunkCount = 0; + client->displayed = 0; + client->parent = ewPtr; + ewPtr->body.ew.clients = client; + } + client->tkwin = ewPtr->body.ew.tkwin; + /* - * Take over geometry management for the window, plus create - * an event handler to find out when it is deleted. + * Take over geometry management for the window, plus create an + * event handler to find out when it is deleted. */ Tk_ManageGeometry(ewPtr->body.ew.tkwin, &textGeomType, - (ClientData) ewPtr); + (ClientData) client); Tk_CreateEventHandler(ewPtr->body.ew.tkwin, StructureNotifyMask, - EmbWinStructureProc, (ClientData) ewPtr); + EmbWinStructureProc, (ClientData) client); /* - * Special trick! Must enter into the hash table *after* - * calling Tk_ManageGeometry: if the window was already managed - * elsewhere in this text, the Tk_ManageGeometry call will cause - * the entry to be removed, which could potentially lose the new - * entry. + * Special trick! Must enter into the hash table *after* calling + * Tk_ManageGeometry: if the window was already managed elsewhere + * in this text, the Tk_ManageGeometry call will cause the entry + * to be removed, which could potentially lose the new entry. */ - hPtr = Tcl_CreateHashEntry(&textPtr->windowTable, - Tk_PathName(ewPtr->body.ew.tkwin), &new); + hPtr = Tcl_CreateHashEntry(&textPtr->sharedTextPtr->windowTable, + Tk_PathName(ewPtr->body.ew.tkwin), &isNew); Tcl_SetHashValue(hPtr, ewPtr); - } } return TCL_OK; @@ -412,135 +497,54 @@ EmbWinConfigure(textPtr, ewPtr, argc, argv) /* *-------------------------------------------------------------- * - * AlignParseProc -- - * - * This procedure is invoked by Tk_ConfigureWidget during - * option processing to handle "-align" options for embedded - * windows. - * - * Results: - * A standard Tcl return value. - * - * Side effects: - * The alignment for the embedded window may change. - * - *-------------------------------------------------------------- - */ - - /* ARGSUSED */ -static int -AlignParseProc(clientData, interp, tkwin, value, widgRec, offset) - ClientData clientData; /* Not used.*/ - Tcl_Interp *interp; /* Used for reporting errors. */ - Tk_Window tkwin; /* Window for text widget. */ - CONST char *value; /* Value of option. */ - char *widgRec; /* Pointer to TkTextEmbWindow - * structure. */ - int offset; /* Offset into item (ignored). */ -{ - register TkTextEmbWindow *embPtr = (TkTextEmbWindow *) widgRec; - - if (strcmp(value, "baseline") == 0) { - embPtr->align = ALIGN_BASELINE; - } else if (strcmp(value, "bottom") == 0) { - embPtr->align = ALIGN_BOTTOM; - } else if (strcmp(value, "center") == 0) { - embPtr->align = ALIGN_CENTER; - } else if (strcmp(value, "top") == 0) { - embPtr->align = ALIGN_TOP; - } else { - Tcl_AppendResult(interp, "bad alignment \"", value, - "\": must be baseline, bottom, center, or top", - (char *) NULL); - return TCL_ERROR; - } - return TCL_OK; -} - -/* - *-------------------------------------------------------------- - * - * AlignPrintProc -- - * - * This procedure is invoked by the Tk configuration code - * to produce a printable string for the "-align" configuration - * option for embedded windows. - * - * Results: - * The return value is a string describing the embedded - * window's current alignment. - * - * Side effects: - * None. - * - *-------------------------------------------------------------- - */ - - /* ARGSUSED */ -static char * -AlignPrintProc(clientData, tkwin, widgRec, offset, freeProcPtr) - ClientData clientData; /* Ignored. */ - Tk_Window tkwin; /* Window for text widget. */ - char *widgRec; /* Pointer to TkTextEmbWindow - * structure. */ - int offset; /* Ignored. */ - Tcl_FreeProc **freeProcPtr; /* Pointer to variable to fill in with - * information about how to reclaim - * storage for return string. */ -{ - switch (((TkTextEmbWindow *) widgRec)->align) { - case ALIGN_BASELINE: - return "baseline"; - case ALIGN_BOTTOM: - return "bottom"; - case ALIGN_CENTER: - return "center"; - case ALIGN_TOP: - return "top"; - default: - return "??"; - } -} - -/* - *-------------------------------------------------------------- - * * EmbWinStructureProc -- * - * This procedure is invoked by the Tk event loop whenever - * StructureNotify events occur for a window that's embedded - * in a text widget. This procedure's only purpose is to - * clean up when windows are deleted. + * This function is invoked by the Tk event loop whenever StructureNotify + * events occur for a window that's embedded in a text widget. This + * function's only purpose is to clean up when windows are deleted. * * Results: * None. * * Side effects: - * The window is disassociated from the window segment, and - * the portion of the text is redisplayed. + * The window is disassociated from the window segment, and the portion + * of the text is redisplayed. * *-------------------------------------------------------------- */ static void -EmbWinStructureProc(clientData, eventPtr) - ClientData clientData; /* Pointer to record describing window item. */ - XEvent *eventPtr; /* Describes what just happened. */ +EmbWinStructureProc( + ClientData clientData, /* Pointer to record describing window item. */ + XEvent *eventPtr) /* Describes what just happened. */ { - register TkTextSegment *ewPtr = (TkTextSegment *) clientData; + TkTextEmbWindowClient *client = (TkTextEmbWindowClient*)clientData; + TkTextSegment *ewPtr = client->parent; TkTextIndex index; + Tcl_HashEntry *hPtr; if (eventPtr->type != DestroyNotify) { return; } - Tcl_DeleteHashEntry(Tcl_FindHashEntry(&ewPtr->body.ew.textPtr->windowTable, - Tk_PathName(ewPtr->body.ew.tkwin))); + hPtr = Tcl_FindHashEntry(&ewPtr->body.ew.sharedTextPtr->windowTable, + Tk_PathName(client->tkwin)); + if (hPtr != NULL) { + /* + * This may not exist if the entire widget is being deleted. + */ + + Tcl_DeleteHashEntry(hPtr); + } + ewPtr->body.ew.tkwin = NULL; - index.tree = ewPtr->body.ew.textPtr->tree; + client->tkwin = NULL; + index.tree = ewPtr->body.ew.sharedTextPtr->tree; index.linePtr = ewPtr->body.ew.linePtr; index.byteIndex = TkTextSegToOffset(ewPtr, ewPtr->body.ew.linePtr); - TkTextChanged(ewPtr->body.ew.textPtr, &index, &index); + TkTextChanged(ewPtr->body.ew.sharedTextPtr, NULL, &index, &index); + TkTextInvalidateLineMetrics(ewPtr->body.ew.sharedTextPtr, NULL, + index.linePtr, 0, TK_TEXT_INVALIDATE_ONLY); } /* @@ -548,8 +552,8 @@ EmbWinStructureProc(clientData, eventPtr) * * EmbWinRequestProc -- * - * This procedure is invoked whenever a window that's associated - * with a window canvas item changes its requested dimensions. + * This function is invoked whenever a window that's associated with a + * window canvas item changes its requested dimensions. * * Results: * None. @@ -563,18 +567,20 @@ EmbWinStructureProc(clientData, eventPtr) /* ARGSUSED */ static void -EmbWinRequestProc(clientData, tkwin) - ClientData clientData; /* Pointer to record for window item. */ - Tk_Window tkwin; /* Window that changed its desired - * size. */ +EmbWinRequestProc( + ClientData clientData, /* Pointer to record for window item. */ + Tk_Window tkwin) /* Window that changed its desired size. */ { - TkTextSegment *ewPtr = (TkTextSegment *) clientData; + TkTextEmbWindowClient *client = (TkTextEmbWindowClient*)clientData; + TkTextSegment *ewPtr = client->parent; TkTextIndex index; - index.tree = ewPtr->body.ew.textPtr->tree; + index.tree = ewPtr->body.ew.sharedTextPtr->tree; index.linePtr = ewPtr->body.ew.linePtr; index.byteIndex = TkTextSegToOffset(ewPtr, ewPtr->body.ew.linePtr); - TkTextChanged(ewPtr->body.ew.textPtr, &index, &index); + TkTextChanged(ewPtr->body.ew.sharedTextPtr, NULL, &index, &index); + TkTextInvalidateLineMetrics(ewPtr->body.ew.sharedTextPtr, NULL, + index.linePtr, 0, TK_TEXT_INVALIDATE_ONLY); } /* @@ -582,44 +588,126 @@ EmbWinRequestProc(clientData, tkwin) * * EmbWinLostSlaveProc -- * - * This procedure is invoked by the Tk geometry manager when - * a slave window managed by a text widget is claimed away - * by another geometry manager. + * This function is invoked by the Tk geometry manager when a slave + * window managed by a text widget is claimed away by another geometry + * manager. * * Results: * None. * * Side effects: - * The window is disassociated from the window segment, and - * the portion of the text is redisplayed. + * The window is disassociated from the window segment, and the portion + * of the text is redisplayed. * *-------------------------------------------------------------- */ static void -EmbWinLostSlaveProc(clientData, tkwin) - ClientData clientData; /* Pointer to record describing window item. */ - Tk_Window tkwin; /* Window that was claimed away by another +EmbWinLostSlaveProc( + ClientData clientData, /* Pointer to record describing window item. */ + Tk_Window tkwin) /* Window that was claimed away by another * geometry manager. */ { - register TkTextSegment *ewPtr = (TkTextSegment *) clientData; + TkTextEmbWindowClient *client = (TkTextEmbWindowClient*)clientData; + TkTextSegment *ewPtr = client->parent; TkTextIndex index; + Tcl_HashEntry *hPtr; + TkTextEmbWindowClient *loop; - Tk_DeleteEventHandler(ewPtr->body.ew.tkwin, StructureNotifyMask, - EmbWinStructureProc, (ClientData) ewPtr); - Tcl_CancelIdleCall(EmbWinDelayedUnmap, (ClientData) ewPtr); - if (ewPtr->body.ew.textPtr->tkwin != Tk_Parent(tkwin)) { - Tk_UnmaintainGeometry(tkwin, ewPtr->body.ew.textPtr->tkwin); + Tk_DeleteEventHandler(client->tkwin, StructureNotifyMask, + EmbWinStructureProc, (ClientData) client); + Tcl_CancelIdleCall(EmbWinDelayedUnmap, (ClientData) client); + if (client->textPtr->tkwin != Tk_Parent(tkwin)) { + Tk_UnmaintainGeometry(tkwin, client->textPtr->tkwin); } else { Tk_UnmapWindow(tkwin); } - Tcl_DeleteHashEntry(Tcl_FindHashEntry(&ewPtr->body.ew.textPtr->windowTable, - Tk_PathName(ewPtr->body.ew.tkwin))); + hPtr = Tcl_FindHashEntry(&ewPtr->body.ew.sharedTextPtr->windowTable, + Tk_PathName(client->tkwin)); + Tcl_DeleteHashEntry(hPtr); + client->tkwin = NULL; ewPtr->body.ew.tkwin = NULL; - index.tree = ewPtr->body.ew.textPtr->tree; + + /* + * Free up the memory allocation for this client. + */ + + loop = ewPtr->body.ew.clients; + if (loop == client) { + ewPtr->body.ew.clients = client->next; + } else { + while (loop->next != client) { + loop = loop->next; + } + loop->next = client->next; + } + ckfree((char *) client); + + index.tree = ewPtr->body.ew.sharedTextPtr->tree; index.linePtr = ewPtr->body.ew.linePtr; index.byteIndex = TkTextSegToOffset(ewPtr, ewPtr->body.ew.linePtr); - TkTextChanged(ewPtr->body.ew.textPtr, &index, &index); + TkTextChanged(ewPtr->body.ew.sharedTextPtr, NULL, &index, &index); + TkTextInvalidateLineMetrics(ewPtr->body.ew.sharedTextPtr, NULL, + index.linePtr, 0, TK_TEXT_INVALIDATE_ONLY); +} + +/* + *-------------------------------------------------------------- + * + * TkTextWinFreeClient -- + * + * Free up the hash entry and client information for a given embedded + * window. + * + * It is assumed the caller will manage the linked list of clients + * associated with the relevant TkTextSegment. + * + * Results: + * Nothing. + * + * Side effects: + * The embedded window information for a single client is deleted, if it + * exists, and any resources associated with it are released. + * + *-------------------------------------------------------------- + */ + +void +TkTextWinFreeClient( + Tcl_HashEntry *hPtr, /* Hash entry corresponding to this client, or + * NULL */ + TkTextEmbWindowClient *client) + /* Client data structure, with the 'tkwin' + * field to be cleaned up. */ +{ + if (hPtr != NULL) { + /* + * (It's possible for there to be no hash table entry for this window, + * if an error occurred while creating the window segment but before + * the window got added to the table) + */ + + Tcl_DeleteHashEntry(hPtr); + } + + /* + * Delete the event handler for the window before destroying the window, + * so that EmbWinStructureProc doesn't get called (we'll already do + * everything that it would have done, and it will just get confused). + */ + + if (client->tkwin != NULL) { + Tk_DeleteEventHandler(client->tkwin, StructureNotifyMask, + EmbWinStructureProc, (ClientData) client); + Tk_DestroyWindow(client->tkwin); + } + Tcl_CancelIdleCall(EmbWinDelayedUnmap, (ClientData) client); + + /* + * Free up this client. + */ + + ckfree((char *) client); } /* @@ -627,8 +715,8 @@ EmbWinLostSlaveProc(clientData, tkwin) * * EmbWinDeleteProc -- * - * This procedure is invoked by the text B-tree code whenever - * an embedded window lies in a range of characters being deleted. + * This function is invoked by the text B-tree code whenever an embedded + * window lies in a range of characters being deleted. * * Results: * Returns 0 to indicate that the deletion has been accepted. @@ -642,42 +730,37 @@ EmbWinLostSlaveProc(clientData, tkwin) /* ARGSUSED */ static int -EmbWinDeleteProc(ewPtr, linePtr, treeGone) - TkTextSegment *ewPtr; /* Segment being deleted. */ - TkTextLine *linePtr; /* Line containing segment. */ - int treeGone; /* Non-zero means the entire tree is - * being deleted, so everything must - * get cleaned up. */ +EmbWinDeleteProc( + TkTextSegment *ewPtr, /* Segment being deleted. */ + TkTextLine *linePtr, /* Line containing segment. */ + int treeGone) /* Non-zero means the entire tree is being + * deleted, so everything must get cleaned + * up. */ { - Tcl_HashEntry *hPtr; + TkTextEmbWindowClient *client; + client = ewPtr->body.ew.clients; - if (ewPtr->body.ew.tkwin != NULL) { - hPtr = Tcl_FindHashEntry(&ewPtr->body.ew.textPtr->windowTable, - Tk_PathName(ewPtr->body.ew.tkwin)); - if (hPtr != NULL) { - /* - * (It's possible for there to be no hash table entry for this - * window, if an error occurred while creating the window segment - * but before the window got added to the table) - */ + while (client != NULL) { + TkTextEmbWindowClient *next = client->next; + Tcl_HashEntry *hPtr = NULL; - Tcl_DeleteHashEntry(hPtr); + if (client->tkwin != NULL) { + hPtr = Tcl_FindHashEntry( + &ewPtr->body.ew.sharedTextPtr->windowTable, + Tk_PathName(client->tkwin)); } + TkTextWinFreeClient(hPtr, client); + client = next; + } + ewPtr->body.ew.clients = NULL; - /* - * Delete the event handler for the window before destroying - * the window, so that EmbWinStructureProc doesn't get called - * (we'll already do everything that it would have done, and - * it will just get confused). - */ + Tk_FreeConfigOptions((char *) &ewPtr->body.ew, ewPtr->body.ew.optionTable, + NULL); + + /* + * Free up all memory allocated. + */ - Tk_DeleteEventHandler(ewPtr->body.ew.tkwin, StructureNotifyMask, - EmbWinStructureProc, (ClientData) ewPtr); - Tk_DestroyWindow(ewPtr->body.ew.tkwin); - } - Tcl_CancelIdleCall(EmbWinDelayedUnmap, (ClientData) ewPtr); - Tk_FreeOptions(configSpecs, (char *) &ewPtr->body.ew, - ewPtr->body.ew.textPtr->display, 0); ckfree((char *) ewPtr); return 0; } @@ -687,9 +770,8 @@ EmbWinDeleteProc(ewPtr, linePtr, treeGone) * * EmbWinCleanupProc -- * - * This procedure is invoked by the B-tree code whenever a - * segment containing an embedded window is moved from one - * line to another. + * This function is invoked by the B-tree code whenever a segment + * containing an embedded window is moved from one line to another. * * Results: * None. @@ -701,9 +783,9 @@ EmbWinDeleteProc(ewPtr, linePtr, treeGone) */ static TkTextSegment * -EmbWinCleanupProc(ewPtr, linePtr) - TkTextSegment *ewPtr; /* Mark segment that's being moved. */ - TkTextLine *linePtr; /* Line that now contains segment. */ +EmbWinCleanupProc( + TkTextSegment *ewPtr, /* Mark segment that's being moved. */ + TkTextLine *linePtr) /* Line that now contains segment. */ { ewPtr->body.ew.linePtr = linePtr; return ewPtr; @@ -714,12 +796,11 @@ EmbWinCleanupProc(ewPtr, linePtr) * * EmbWinLayoutProc -- * - * This procedure is the "layoutProc" for embedded window - * segments. + * This function is the "layoutProc" for embedded window segments. * * Results: - * 1 is returned to indicate that the segment should be - * displayed. The chunkPtr structure is filled in. + * 1 is returned to indicate that the segment should be displayed. The + * chunkPtr structure is filled in. * * Side effects: * None, except for filling in chunkPtr. @@ -729,49 +810,105 @@ EmbWinCleanupProc(ewPtr, linePtr) /*ARGSUSED*/ static int -EmbWinLayoutProc(textPtr, indexPtr, ewPtr, offset, maxX, maxChars, - noCharsYet, wrapMode, chunkPtr) - TkText *textPtr; /* Text widget being layed out. */ - TkTextIndex *indexPtr; /* Identifies first character in chunk. */ - TkTextSegment *ewPtr; /* Segment corresponding to indexPtr. */ - int offset; /* Offset within segPtr corresponding to +EmbWinLayoutProc( + TkText *textPtr, /* Text widget being layed out. */ + TkTextIndex *indexPtr, /* Identifies first character in chunk. */ + TkTextSegment *ewPtr, /* Segment corresponding to indexPtr. */ + int offset, /* Offset within segPtr corresponding to * indexPtr (always 0). */ - int maxX; /* Chunk must not occupy pixels at this + int maxX, /* Chunk must not occupy pixels at this * position or higher. */ - int maxChars; /* Chunk must not include more than this - * many characters. */ - int noCharsYet; /* Non-zero means no characters have been + int maxChars, /* Chunk must not include more than this many + * characters. */ + int noCharsYet, /* Non-zero means no characters have been * assigned to this line yet. */ - TkWrapMode wrapMode; /* Wrap mode to use for line: TEXT_WRAPMODE_CHAR, - * TEXT_WRAPMODE_NONE, or TEXT_WRAPMODE_WORD. */ - register TkTextDispChunk *chunkPtr; - /* Structure to fill in with information - * about this chunk. The x field has already - * been set by the caller. */ + TkWrapMode wrapMode, /* Wrap mode to use for line: + * TEXT_WRAPMODE_CHAR, TEXT_WRAPMODE_NONE, or + * TEXT_WRAPMODE_WORD. */ + register TkTextDispChunk *chunkPtr) + /* Structure to fill in with information about + * this chunk. The x field has already been + * set by the caller. */ { int width, height; + TkTextEmbWindowClient *client; if (offset != 0) { - panic("Non-zero offset in EmbWinLayoutProc"); + Tcl_Panic("Non-zero offset in EmbWinLayoutProc"); + } + + client = EmbWinGetClient(textPtr, ewPtr); + if (client == NULL) { + ewPtr->body.ew.tkwin = NULL; + } else { + ewPtr->body.ew.tkwin = client->tkwin; } if ((ewPtr->body.ew.tkwin == NULL) && (ewPtr->body.ew.create != NULL)) { - int code, new; - Tcl_DString name; + int code, isNew; Tk_Window ancestor; Tcl_HashEntry *hPtr; + const char *before, *string; + Tcl_DString name, buf, *dsPtr = NULL; + + before = ewPtr->body.ew.create; /* - * The window doesn't currently exist. Create it by evaluating - * the creation script. The script must return the window's - * path name: look up that name to get back to the window - * token. Then register ourselves as the geometry manager for - * the window. + * Find everything up to the next % character and append it to the + * result string. */ - code = Tcl_GlobalEval(textPtr->interp, ewPtr->body.ew.create); + string = before; + while (*string != 0) { + if ((*string == '%') && (string[1] == '%' || string[1] == 'W')) { + if (dsPtr == NULL) { + Tcl_DStringInit(&buf); + dsPtr = &buf; + } + if (string != before) { + Tcl_DStringAppend(dsPtr, before, (int) (string-before)); + before = string; + } + if (string[1] == '%') { + Tcl_DStringAppend(dsPtr, "%", 1); + } else { + /* + * Substitute string as proper Tcl list element. + */ + + int spaceNeeded, cvtFlags, length; + const char *str = Tk_PathName(textPtr->tkwin); + + spaceNeeded = Tcl_ScanElement(str, &cvtFlags); + length = Tcl_DStringLength(dsPtr); + Tcl_DStringSetLength(dsPtr, length + spaceNeeded); + spaceNeeded = Tcl_ConvertElement(str, + Tcl_DStringValue(dsPtr) + length, + cvtFlags | TCL_DONT_USE_BRACES); + Tcl_DStringSetLength(dsPtr, length + spaceNeeded); + } + before += 2; + string++; + } + string++; + } + + /* + * The window doesn't currently exist. Create it by evaluating the + * creation script. The script must return the window's path name: + * look up that name to get back to the window token. Then register + * ourselves as the geometry manager for the window. + */ + + if (dsPtr != NULL) { + Tcl_DStringAppend(dsPtr, before, (int) (string-before)); + code = Tcl_GlobalEval(textPtr->interp, Tcl_DStringValue(dsPtr)); + Tcl_DStringFree(dsPtr); + } else { + code = Tcl_GlobalEval(textPtr->interp, ewPtr->body.ew.create); + } if (code != TCL_OK) { - createError: + createError: Tcl_BackgroundError(textPtr->interp); goto gotWindow; } @@ -780,19 +917,19 @@ EmbWinLayoutProc(textPtr, indexPtr, ewPtr, offset, maxX, maxChars, Tcl_ResetResult(textPtr->interp); ewPtr->body.ew.tkwin = Tk_NameToWindow(textPtr->interp, Tcl_DStringValue(&name), textPtr->tkwin); + Tcl_DStringFree(&name); if (ewPtr->body.ew.tkwin == NULL) { goto createError; } - for (ancestor = textPtr->tkwin; ; - ancestor = Tk_Parent(ancestor)) { + for (ancestor = textPtr->tkwin; ; ancestor = Tk_Parent(ancestor)) { if (ancestor == Tk_Parent(ewPtr->body.ew.tkwin)) { break; } if (Tk_TopWinHierarchy(ancestor)) { - badMaster: + badMaster: Tcl_AppendResult(textPtr->interp, "can't embed ", Tk_PathName(ewPtr->body.ew.tkwin), " relative to ", - Tk_PathName(textPtr->tkwin), (char *) NULL); + Tk_PathName(textPtr->tkwin), NULL); Tcl_BackgroundError(textPtr->interp); ewPtr->body.ew.tkwin = NULL; goto gotWindow; @@ -802,21 +939,39 @@ EmbWinLayoutProc(textPtr, indexPtr, ewPtr, offset, maxX, maxChars, || (textPtr->tkwin == ewPtr->body.ew.tkwin)) { goto badMaster; } - Tk_ManageGeometry(ewPtr->body.ew.tkwin, &textGeomType, - (ClientData) ewPtr); - Tk_CreateEventHandler(ewPtr->body.ew.tkwin, StructureNotifyMask, - EmbWinStructureProc, (ClientData) ewPtr); + + if (client == NULL) { + /* + * We just used a '-create' script to make a new window, which we + * now need to add to our client list. + */ + + client = (TkTextEmbWindowClient *) + ckalloc(sizeof(TkTextEmbWindowClient)); + client->next = ewPtr->body.ew.clients; + client->textPtr = textPtr; + client->tkwin = NULL; + client->chunkCount = 0; + client->displayed = 0; + client->parent = ewPtr; + ewPtr->body.ew.clients = client; + } + + client->tkwin = ewPtr->body.ew.tkwin; + Tk_ManageGeometry(client->tkwin, &textGeomType, + (ClientData) client); + Tk_CreateEventHandler(client->tkwin, StructureNotifyMask, + EmbWinStructureProc, (ClientData) client); /* - * Special trick! Must enter into the hash table *after* - * calling Tk_ManageGeometry: if the window was already managed - * elsewhere in this text, the Tk_ManageGeometry call will cause - * the entry to be removed, which could potentially lose the new - * entry. + * Special trick! Must enter into the hash table *after* calling + * Tk_ManageGeometry: if the window was already managed elsewhere in + * this text, the Tk_ManageGeometry call will cause the entry to be + * removed, which could potentially lose the new entry. */ - hPtr = Tcl_CreateHashEntry(&textPtr->windowTable, - Tk_PathName(ewPtr->body.ew.tkwin), &new); + hPtr = Tcl_CreateHashEntry(&textPtr->sharedTextPtr->windowTable, + Tk_PathName(client->tkwin), &isNew); Tcl_SetHashValue(hPtr, ewPtr); } @@ -824,7 +979,7 @@ EmbWinLayoutProc(textPtr, indexPtr, ewPtr, offset, maxX, maxChars, * See if there's room for this window on this line. */ - gotWindow: + gotWindow: if (ewPtr->body.ew.tkwin == NULL) { width = 0; height = 0; @@ -841,9 +996,9 @@ EmbWinLayoutProc(textPtr, indexPtr, ewPtr, offset, maxX, maxChars, * Fill in the chunk structure. */ - chunkPtr->displayProc = EmbWinDisplayProc; + chunkPtr->displayProc = TkTextEmbWinDisplayProc; chunkPtr->undisplayProc = EmbWinUndisplayProc; - chunkPtr->measureProc = (Tk_ChunkMeasureProc *) NULL; + chunkPtr->measureProc = NULL; chunkPtr->bboxProc = EmbWinBboxProc; chunkPtr->numBytes = 1; if (ewPtr->body.ew.align == ALIGN_BASELINE) { @@ -859,7 +1014,9 @@ EmbWinLayoutProc(textPtr, indexPtr, ewPtr, offset, maxX, maxChars, chunkPtr->breakIndex = -1; chunkPtr->breakIndex = 1; chunkPtr->clientData = (ClientData) ewPtr; - ewPtr->body.ew.chunkCount += 1; + if (client != NULL) { + client->chunkCount += 1; + } return 1; } @@ -868,84 +1025,89 @@ EmbWinLayoutProc(textPtr, indexPtr, ewPtr, offset, maxX, maxChars, * * EmbWinCheckProc -- * - * This procedure is invoked by the B-tree code to perform - * consistency checks on embedded windows. + * This function is invoked by the B-tree code to perform consistency + * checks on embedded windows. * * Results: * None. * * Side effects: - * The procedure panics if it detects anything wrong with - * the embedded window. + * The function panics if it detects anything wrong with the embedded + * window. * *-------------------------------------------------------------- */ static void -EmbWinCheckProc(ewPtr, linePtr) - TkTextSegment *ewPtr; /* Segment to check. */ - TkTextLine *linePtr; /* Line containing segment. */ +EmbWinCheckProc( + TkTextSegment *ewPtr, /* Segment to check. */ + TkTextLine *linePtr) /* Line containing segment. */ { if (ewPtr->nextPtr == NULL) { - panic("EmbWinCheckProc: embedded window is last segment in line"); + Tcl_Panic("EmbWinCheckProc: embedded window is last segment in line"); } if (ewPtr->size != 1) { - panic("EmbWinCheckProc: embedded window has size %d", ewPtr->size); + Tcl_Panic("EmbWinCheckProc: embedded window has size %d", ewPtr->size); } } /* *-------------------------------------------------------------- * - * EmbWinDisplayProc -- + * TkTextEmbWinDisplayProc -- * - * This procedure is invoked by the text displaying code - * when it is time to actually draw an embedded window - * chunk on the screen. + * This function is invoked by the text displaying code when it is time + * to actually draw an embedded window chunk on the screen. * * Results: * None. * * Side effects: - * The embedded window gets moved to the correct location - * and mapped onto the screen. + * The embedded window gets moved to the correct location and mapped onto + * the screen. * *-------------------------------------------------------------- */ -static void -EmbWinDisplayProc(chunkPtr, x, y, lineHeight, baseline, display, dst, screenY) - TkTextDispChunk *chunkPtr; /* Chunk that is to be drawn. */ - int x; /* X-position in dst at which to - * draw this chunk (differs from - * the x-position in the chunk because - * of scrolling). */ - int y; /* Top of rectangular bounding box - * for line: tells where to draw this - * chunk in dst (x-position is in - * the chunk itself). */ - int lineHeight; /* Total height of line. */ - int baseline; /* Offset of baseline from y. */ - Display *display; /* Display to use for drawing. */ - Drawable dst; /* Pixmap or window in which to draw */ - int screenY; /* Y-coordinate in text window that - * corresponds to y. */ +void +TkTextEmbWinDisplayProc( + TkText *textPtr, /* Information about text widget. */ + TkTextDispChunk *chunkPtr, /* Chunk that is to be drawn. */ + int x, /* X-position in dst at which to draw this + * chunk (differs from the x-position in the + * chunk because of scrolling). */ + int y, /* Top of rectangular bounding box for line: + * tells where to draw this chunk in dst + * (x-position is in the chunk itself). */ + int lineHeight, /* Total height of line. */ + int baseline, /* Offset of baseline from y. */ + Display *display, /* Display to use for drawing (unused). */ + Drawable dst, /* Pixmap or window in which to draw + * (unused). */ + int screenY) /* Y-coordinate in text window that + * corresponds to y. */ { - TkTextSegment *ewPtr = (TkTextSegment *) chunkPtr->clientData; int lineX, windowX, windowY, width, height; Tk_Window tkwin; + TkTextSegment *ewPtr = (TkTextSegment*) chunkPtr->clientData; + TkTextEmbWindowClient *client = EmbWinGetClient(textPtr, ewPtr); + + if (client == NULL) { + return; + } - tkwin = ewPtr->body.ew.tkwin; + tkwin = client->tkwin; if (tkwin == NULL) { return; } + if ((x + chunkPtr->width) <= 0) { /* - * The window is off-screen; just unmap it. + * The window is off-screen; just unmap it. */ - if (ewPtr->body.ew.textPtr->tkwin != Tk_Parent(tkwin)) { - Tk_UnmaintainGeometry(tkwin, ewPtr->body.ew.textPtr->tkwin); + if (textPtr->tkwin != Tk_Parent(tkwin)) { + Tk_UnmaintainGeometry(tkwin, textPtr->tkwin); } else { Tk_UnmapWindow(tkwin); } @@ -953,15 +1115,15 @@ EmbWinDisplayProc(chunkPtr, x, y, lineHeight, baseline, display, dst, screenY) } /* - * Compute the window's location and size in the text widget, taking - * into account the align and stretch values for the window. + * Compute the window's location and size in the text widget, taking into + * account the align and stretch values for the window. */ - EmbWinBboxProc(chunkPtr, 0, screenY, lineHeight, baseline, &lineX, - &windowY, &width, &height); + EmbWinBboxProc(textPtr, chunkPtr, 0, screenY, lineHeight, baseline, + &lineX, &windowY, &width, &height); windowX = lineX - chunkPtr->x + x; - if (ewPtr->body.ew.textPtr->tkwin == Tk_Parent(tkwin)) { + if (textPtr->tkwin == Tk_Parent(tkwin)) { if ((windowX != Tk_X(tkwin)) || (windowY != Tk_Y(tkwin)) || (Tk_ReqWidth(tkwin) != Tk_Width(tkwin)) || (height != Tk_Height(tkwin))) { @@ -969,15 +1131,15 @@ EmbWinDisplayProc(chunkPtr, x, y, lineHeight, baseline, display, dst, screenY) } Tk_MapWindow(tkwin); } else { - Tk_MaintainGeometry(tkwin, ewPtr->body.ew.textPtr->tkwin, - windowX, windowY, width, height); + Tk_MaintainGeometry(tkwin, textPtr->tkwin, windowX, windowY, + width, height); } /* * Mark the window as displayed so that it won't get unmapped. */ - ewPtr->body.ew.displayed = 1; + client->displayed = 1; } /* @@ -985,9 +1147,9 @@ EmbWinDisplayProc(chunkPtr, x, y, lineHeight, baseline, display, dst, screenY) * * EmbWinUndisplayProc -- * - * This procedure is called when the chunk for an embedded - * window is no longer going to be displayed. It arranges - * for the window associated with the chunk to be unmapped. + * This function is called when the chunk for an embedded window is no + * longer going to be displayed. It arranges for the window associated + * with the chunk to be unmapped. * * Results: * None. @@ -999,25 +1161,29 @@ EmbWinDisplayProc(chunkPtr, x, y, lineHeight, baseline, display, dst, screenY) */ static void -EmbWinUndisplayProc(textPtr, chunkPtr) - TkText *textPtr; /* Overall information about text - * widget. */ - TkTextDispChunk *chunkPtr; /* Chunk that is about to be freed. */ +EmbWinUndisplayProc( + TkText *textPtr, /* Overall information about text widget. */ + TkTextDispChunk *chunkPtr) /* Chunk that is about to be freed. */ { - TkTextSegment *ewPtr = (TkTextSegment *) chunkPtr->clientData; + TkTextSegment *ewPtr = (TkTextSegment*) chunkPtr->clientData; + TkTextEmbWindowClient *client = EmbWinGetClient(textPtr, ewPtr); + + if (client == NULL) { + return; + } - ewPtr->body.ew.chunkCount--; - if (ewPtr->body.ew.chunkCount == 0) { + client->chunkCount--; + if (client->chunkCount == 0) { /* * Don't unmap the window immediately, since there's a good chance - * that it will immediately be redisplayed, perhaps even in the - * same place. Instead, schedule the window to be unmapped later; - * the call to EmbWinDelayedUnmap will be cancelled in the likely - * event that the unmap becomes unnecessary. + * that it will immediately be redisplayed, perhaps even in the same + * place. Instead, schedule the window to be unmapped later; the call + * to EmbWinDelayedUnmap will be cancelled in the likely event that + * the unmap becomes unnecessary. */ - ewPtr->body.ew.displayed = 0; - Tcl_DoWhenIdle(EmbWinDelayedUnmap, (ClientData) ewPtr); + client->displayed = 0; + Tcl_DoWhenIdle(EmbWinDelayedUnmap, (ClientData) client); } } @@ -1026,17 +1192,16 @@ EmbWinUndisplayProc(textPtr, chunkPtr) * * EmbWinBboxProc -- * - * This procedure is called to compute the bounding box of - * the area occupied by an embedded window. + * This function is called to compute the bounding box of the area + * occupied by an embedded window. * * Results: - * There is no return value. *xPtr and *yPtr are filled in - * with the coordinates of the upper left corner of the - * window, and *widthPtr and *heightPtr are filled in with - * the dimensions of the window in pixels. Note: not all - * of the returned bbox is necessarily visible on the screen - * (the rightmost part might be off-screen to the right, - * and the bottommost part might be off-screen to the bottom). + * There is no return value. *xPtr and *yPtr are filled in with the + * coordinates of the upper left corner of the window, and *widthPtr and + * *heightPtr are filled in with the dimensions of the window in pixels. + * Note: not all of the returned bbox is necessarily visible on the + * screen (the rightmost part might be off-screen to the right, and the + * bottommost part might be off-screen to the bottom). * * Side effects: * None. @@ -1045,27 +1210,32 @@ EmbWinUndisplayProc(textPtr, chunkPtr) */ static void -EmbWinBboxProc(chunkPtr, index, y, lineHeight, baseline, xPtr, yPtr, - widthPtr, heightPtr) - TkTextDispChunk *chunkPtr; /* Chunk containing desired char. */ - int index; /* Index of desired character within - * the chunk. */ - int y; /* Topmost pixel in area allocated - * for this line. */ - int lineHeight; /* Total height of line. */ - int baseline; /* Location of line's baseline, in - * pixels measured down from y. */ - int *xPtr, *yPtr; /* Gets filled in with coords of - * character's upper-left pixel. */ - int *widthPtr; /* Gets filled in with width of - * character, in pixels. */ - int *heightPtr; /* Gets filled in with height of - * character, in pixels. */ +EmbWinBboxProc( + TkText *textPtr, /* Information about text widget. */ + TkTextDispChunk *chunkPtr, /* Chunk containing desired char. */ + int index, /* Index of desired character within the + * chunk. */ + int y, /* Topmost pixel in area allocated for this + * line. */ + int lineHeight, /* Total height of line. */ + int baseline, /* Location of line's baseline, in pixels + * measured down from y. */ + int *xPtr, int *yPtr, /* Gets filled in with coords of character's + * upper-left pixel. */ + int *widthPtr, /* Gets filled in with width of window, in + * pixels. */ + int *heightPtr) /* Gets filled in with height of window, in + * pixels. */ { - TkTextSegment *ewPtr = (TkTextSegment *) chunkPtr->clientData; Tk_Window tkwin; + TkTextSegment *ewPtr = (TkTextSegment *) chunkPtr->clientData; + TkTextEmbWindowClient *client = EmbWinGetClient(textPtr, ewPtr); - tkwin = ewPtr->body.ew.tkwin; + if (client == NULL) { + tkwin = NULL; + } else { + tkwin = client->tkwin; + } if (tkwin != NULL) { *widthPtr = Tk_ReqWidth(tkwin); *heightPtr = Tk_ReqHeight(tkwin); @@ -1082,18 +1252,18 @@ EmbWinBboxProc(chunkPtr, index, y, lineHeight, baseline, xPtr, yPtr, } } switch (ewPtr->body.ew.align) { - case ALIGN_BOTTOM: - *yPtr = y + (lineHeight - *heightPtr - ewPtr->body.ew.padY); - break; - case ALIGN_CENTER: - *yPtr = y + (lineHeight - *heightPtr)/2; - break; - case ALIGN_TOP: - *yPtr = y + ewPtr->body.ew.padY; - break; - case ALIGN_BASELINE: - *yPtr = y + (baseline - *heightPtr); - break; + case ALIGN_BOTTOM: + *yPtr = y + (lineHeight - *heightPtr - ewPtr->body.ew.padY); + break; + case ALIGN_CENTER: + *yPtr = y + (lineHeight - *heightPtr)/2; + break; + case ALIGN_TOP: + *yPtr = y + ewPtr->body.ew.padY; + break; + case ALIGN_BASELINE: + *yPtr = y + (baseline - *heightPtr); + break; } } @@ -1102,33 +1272,31 @@ EmbWinBboxProc(chunkPtr, index, y, lineHeight, baseline, xPtr, yPtr, * * EmbWinDelayedUnmap -- * - * This procedure is an idle handler that does the actual - * work of unmapping an embedded window. See the comment - * in EmbWinUndisplayProc for details. + * This function is an idle handler that does the actual work of + * unmapping an embedded window. See the comment in EmbWinUndisplayProc + * for details. * * Results: * None. * * Side effects: - * The window gets unmapped, unless its chunk reference count - * has become non-zero again. + * The window gets unmapped, unless its chunk reference count has become + * non-zero again. * *-------------------------------------------------------------- */ static void -EmbWinDelayedUnmap(clientData) - ClientData clientData; /* Token for the window to - * be unmapped. */ +EmbWinDelayedUnmap( + ClientData clientData) /* Token for the window to be unmapped. */ { - TkTextSegment *ewPtr = (TkTextSegment *) clientData; + TkTextEmbWindowClient *client = (TkTextEmbWindowClient*) clientData; - if (!ewPtr->body.ew.displayed && (ewPtr->body.ew.tkwin != NULL)) { - if (ewPtr->body.ew.textPtr->tkwin != Tk_Parent(ewPtr->body.ew.tkwin)) { - Tk_UnmaintainGeometry(ewPtr->body.ew.tkwin, - ewPtr->body.ew.textPtr->tkwin); + if (!client->displayed && (client->tkwin != NULL)) { + if (client->textPtr->tkwin != Tk_Parent(client->tkwin)) { + Tk_UnmaintainGeometry(client->tkwin, client->textPtr->tkwin); } else { - Tk_UnmapWindow(ewPtr->body.ew.tkwin); + Tk_UnmapWindow(client->tkwin); } } } @@ -1138,14 +1306,13 @@ EmbWinDelayedUnmap(clientData) * * TkTextWindowIndex -- * - * Given the name of an embedded window within a text widget, - * returns an index corresponding to the window's position - * in the text. + * Given the name of an embedded window within a text widget, returns an + * index corresponding to the window's position in the text. * * Results: - * The return value is 1 if there is an embedded window by - * the given name in the text widget, 0 otherwise. If the - * window exists, *indexPtr is filled in with its index. + * The return value is 1 if there is an embedded window by the given name + * in the text widget, 0 otherwise. If the window exists, *indexPtr is + * filled in with its index. * * Side effects: * None. @@ -1154,21 +1321,70 @@ EmbWinDelayedUnmap(clientData) */ int -TkTextWindowIndex(textPtr, name, indexPtr) - TkText *textPtr; /* Text widget containing window. */ - CONST char *name; /* Name of window. */ - TkTextIndex *indexPtr; /* Index information gets stored here. */ +TkTextWindowIndex( + TkText *textPtr, /* Text widget containing window. */ + const char *name, /* Name of window. */ + TkTextIndex *indexPtr) /* Index information gets stored here. */ { Tcl_HashEntry *hPtr; TkTextSegment *ewPtr; - hPtr = Tcl_FindHashEntry(&textPtr->windowTable, name); + hPtr = Tcl_FindHashEntry(&textPtr->sharedTextPtr->windowTable, name); if (hPtr == NULL) { return 0; } + ewPtr = (TkTextSegment *) Tcl_GetHashValue(hPtr); - indexPtr->tree = textPtr->tree; + indexPtr->tree = textPtr->sharedTextPtr->tree; indexPtr->linePtr = ewPtr->body.ew.linePtr; indexPtr->byteIndex = TkTextSegToOffset(ewPtr, indexPtr->linePtr); return 1; } + +/* + *-------------------------------------------------------------- + * + * EmbWinGetClient -- + * + * Given a text widget and a segment which contains an embedded window, + * find the text-widget specific information about the embedded window, + * if any. + * + * This function performs a completely linear lookup for a matching data + * structure. If we envisage using this code with dozens of peer widgets, + * then performance could become an issue and a more sophisticated lookup + * mechanism might be desirable. + * + * Results: + * NULL if no widget-specific info exists, otherwise the structure is + * returned. + * + * Side effects: + * None. + * + *-------------------------------------------------------------- + */ + +static TkTextEmbWindowClient* +EmbWinGetClient( + const TkText *textPtr, /* Information about text widget. */ + TkTextSegment *ewPtr) /* Segment containing embedded window. */ +{ + TkTextEmbWindowClient *client = ewPtr->body.ew.clients; + + while (client != NULL) { + if (client->textPtr == textPtr) { + return client; + } + client = client->next; + } + return NULL; +} + +/* + * Local Variables: + * mode: c + * c-basic-offset: 4 + * fill-column: 78 + * End: + */ |