From a888481bcdb0bc79c8c48d101424132bf66a9e68 Mon Sep 17 00:00:00 2001 From: dkf Date: Mon, 12 Feb 2007 21:41:47 +0000 Subject: Minor whitespace corrections --- generic/tkCanvText.c | 3033 +++++++++++++++++++++++++------------------------- 1 file changed, 1517 insertions(+), 1516 deletions(-) diff --git a/generic/tkCanvText.c b/generic/tkCanvText.c index 9a8782e..8da2fe1 100644 --- a/generic/tkCanvText.c +++ b/generic/tkCanvText.c @@ -1,1516 +1,1517 @@ -/* - * tkCanvText.c -- - * - * This file implements text items for canvas widgets. - * - * Copyright (c) 1991-1994 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. - * - * RCS: @(#) $Id: tkCanvText.c,v 1.21 2006/01/12 13:38:22 dkf Exp $ - */ - -#include -#include "tkInt.h" -#include "tkCanvas.h" -#include "tkPort.h" -#include "default.h" - -/* - * The structure below defines the record for each text item. - */ - -typedef struct TextItem { - Tk_Item header; /* Generic stuff that's the same for all - * types. MUST BE FIRST IN STRUCTURE. */ - Tk_CanvasTextInfo *textInfoPtr; - /* Pointer to a structure containing - * information about the selection and - * insertion cursor. The structure is owned by - * (and shared with) the generic canvas - * code. */ - /* - * Fields that are set by widget commands other than "configure". - */ - - double x, y; /* Positioning point for text. */ - int insertPos; /* Character index of character just before - * which the insertion cursor is displayed. */ - - /* - * Configuration settings that are updated by Tk_ConfigureWidget. - */ - - Tk_Anchor anchor; /* Where to anchor text relative to (x,y). */ - Tk_TSOffset tsoffset; - XColor *color; /* Color for text. */ - XColor *activeColor; /* Color for text. */ - XColor *disabledColor; /* Color for text. */ - Tk_Font tkfont; /* Font for drawing text. */ - Tk_Justify justify; /* Justification mode for text. */ - Pixmap stipple; /* Stipple bitmap for text, or None. */ - Pixmap activeStipple; /* Stipple bitmap for text, or None. */ - Pixmap disabledStipple; /* Stipple bitmap for text, or None. */ - char *text; /* Text for item (malloc-ed). */ - int width; /* Width of lines for word-wrap, pixels. Zero - * means no word-wrap. */ - int underline; /* Index of character to put underline beneath - * or -1 for no underlining. */ - - /* - * Fields whose values are derived from the current values of the - * configuration settings above. - */ - - int numChars; /* Length of text in characters. */ - int numBytes; /* Length of text in bytes. */ - Tk_TextLayout textLayout; /* Cached text layout information. */ - int leftEdge; /* Pixel location of the left edge of the text - * item; where the left border of the text - * layout is drawn. */ - int rightEdge; /* Pixel just to right of right edge of area - * of text item. Used for selecting up to end - * of line. */ - GC gc; /* Graphics context for drawing text. */ - GC selTextGC; /* Graphics context for selected text. */ - GC cursorOffGC; /* If not None, this gives a graphics context - * to use to draw the insertion cursor when - * it's off. Used if the selection and - * insertion cursor colors are the same. */ -} TextItem; - -/* - * Information used for parsing configuration specs: - */ - -static Tk_CustomOption stateOption = { - (Tk_OptionParseProc *) TkStateParseProc, - TkStatePrintProc, (ClientData) 2 -}; -static Tk_CustomOption tagsOption = { - (Tk_OptionParseProc *) Tk_CanvasTagsParseProc, - Tk_CanvasTagsPrintProc, (ClientData) NULL -}; -static Tk_CustomOption offsetOption = { - (Tk_OptionParseProc *) TkOffsetParseProc, - TkOffsetPrintProc, (ClientData) (TK_OFFSET_RELATIVE) -}; - -static Tk_ConfigSpec configSpecs[] = { - {TK_CONFIG_COLOR, "-activefill", NULL, NULL, - NULL, Tk_Offset(TextItem, activeColor), TK_CONFIG_NULL_OK}, - {TK_CONFIG_BITMAP, "-activestipple", NULL, NULL, - NULL, Tk_Offset(TextItem, activeStipple), TK_CONFIG_NULL_OK}, - {TK_CONFIG_ANCHOR, "-anchor", NULL, NULL, - "center", Tk_Offset(TextItem, anchor), TK_CONFIG_DONT_SET_DEFAULT}, - {TK_CONFIG_COLOR, "-disabledfill", NULL, NULL, - NULL, Tk_Offset(TextItem, disabledColor), TK_CONFIG_NULL_OK}, - {TK_CONFIG_BITMAP, "-disabledstipple", NULL, NULL, - NULL, Tk_Offset(TextItem, disabledStipple), TK_CONFIG_NULL_OK}, - {TK_CONFIG_COLOR, "-fill", NULL, NULL, - "black", Tk_Offset(TextItem, color), TK_CONFIG_NULL_OK}, - {TK_CONFIG_FONT, "-font", NULL, NULL, - DEF_CANVTEXT_FONT, Tk_Offset(TextItem, tkfont), 0}, - {TK_CONFIG_JUSTIFY, "-justify", NULL, NULL, - "left", Tk_Offset(TextItem, justify), TK_CONFIG_DONT_SET_DEFAULT}, - {TK_CONFIG_CUSTOM, "-offset", NULL, NULL, - "0,0", Tk_Offset(TextItem, tsoffset), - TK_CONFIG_DONT_SET_DEFAULT, &offsetOption}, - {TK_CONFIG_CUSTOM, "-state", NULL, NULL, - NULL, Tk_Offset(Tk_Item, state), TK_CONFIG_NULL_OK, &stateOption}, - {TK_CONFIG_BITMAP, "-stipple", NULL, NULL, - NULL, Tk_Offset(TextItem, stipple), TK_CONFIG_NULL_OK}, - {TK_CONFIG_CUSTOM, "-tags", NULL, NULL, - NULL, 0, TK_CONFIG_NULL_OK, &tagsOption}, - {TK_CONFIG_STRING, "-text", NULL, NULL, - "", Tk_Offset(TextItem, text), 0}, - {TK_CONFIG_INT, "-underline", NULL, NULL, - "-1", Tk_Offset(TextItem, underline), 0}, - {TK_CONFIG_PIXELS, "-width", NULL, NULL, - "0", Tk_Offset(TextItem, width), TK_CONFIG_DONT_SET_DEFAULT}, - {TK_CONFIG_END, NULL, NULL, NULL, NULL, 0, 0} -}; - -/* - * Prototypes for functions defined in this file: - */ - -static void ComputeTextBbox(Tk_Canvas canvas, TextItem *textPtr); -static int ConfigureText(Tcl_Interp *interp, - Tk_Canvas canvas, Tk_Item *itemPtr, int argc, - Tcl_Obj *CONST objv[], int flags); -static int CreateText(Tcl_Interp *interp, - Tk_Canvas canvas, struct Tk_Item *itemPtr, - int argc, Tcl_Obj *CONST objv[]); -static void DeleteText(Tk_Canvas canvas, - Tk_Item *itemPtr, Display *display); -static void DisplayCanvText(Tk_Canvas canvas, - Tk_Item *itemPtr, Display *display, Drawable dst, - int x, int y, int width, int height); -static int GetSelText(Tk_Canvas canvas, - Tk_Item *itemPtr, int offset, char *buffer, - int maxBytes); -static int GetTextIndex(Tcl_Interp *interp, - Tk_Canvas canvas, Tk_Item *itemPtr, - Tcl_Obj *obj, int *indexPtr); -static void ScaleText(Tk_Canvas canvas, - Tk_Item *itemPtr, double originX, double originY, - double scaleX, double scaleY); -static void SetTextCursor(Tk_Canvas canvas, - Tk_Item *itemPtr, int index); -static int TextCoords(Tcl_Interp *interp, - Tk_Canvas canvas, Tk_Item *itemPtr, - int argc, Tcl_Obj *CONST objv[]); -static void TextDeleteChars(Tk_Canvas canvas, - Tk_Item *itemPtr, int first, int last); -static void TextInsert(Tk_Canvas canvas, - Tk_Item *itemPtr, int beforeThis, char *string); -static int TextToArea(Tk_Canvas canvas, - Tk_Item *itemPtr, double *rectPtr); -static double TextToPoint(Tk_Canvas canvas, - Tk_Item *itemPtr, double *pointPtr); -static int TextToPostscript(Tcl_Interp *interp, - Tk_Canvas canvas, Tk_Item *itemPtr, int prepass); -static void TranslateText(Tk_Canvas canvas, - Tk_Item *itemPtr, double deltaX, double deltaY); - -/* - * The structures below defines the rectangle and oval item types by means of - * functions that can be invoked by generic item code. - */ - -Tk_ItemType tkTextType = { - "text", /* name */ - sizeof(TextItem), /* itemSize */ - CreateText, /* createProc */ - configSpecs, /* configSpecs */ - ConfigureText, /* configureProc */ - TextCoords, /* coordProc */ - DeleteText, /* deleteProc */ - DisplayCanvText, /* displayProc */ - TK_CONFIG_OBJS, /* flags */ - TextToPoint, /* pointProc */ - TextToArea, /* areaProc */ - TextToPostscript, /* postscriptProc */ - ScaleText, /* scaleProc */ - TranslateText, /* translateProc */ - (Tk_ItemIndexProc *) GetTextIndex,/* indexProc */ - SetTextCursor, /* icursorProc */ - GetSelText, /* selectionProc */ - TextInsert, /* insertProc */ - TextDeleteChars, /* dTextProc */ - NULL, /* nextPtr */ -}; - -/* - *-------------------------------------------------------------- - * - * CreateText -- - * - * This function is invoked to create a new text item in a canvas. - * - * Results: - * A standard Tcl return value. If an error occurred in creating the item - * then an error message is left in the interp's result; in this case - * itemPtr is left uninitialized so it can be safely freed by the caller. - * - * Side effects: - * A new text item is created. - * - *-------------------------------------------------------------- - */ - -static int -CreateText( - Tcl_Interp *interp, /* Interpreter for error reporting. */ - Tk_Canvas canvas, /* Canvas to hold new item. */ - Tk_Item *itemPtr, /* Record to hold new item; header has been - * initialized by caller. */ - int objc, /* Number of arguments in objv. */ - Tcl_Obj *CONST objv[]) /* Arguments describing rectangle. */ -{ - TextItem *textPtr = (TextItem *) itemPtr; - int i; - - if (objc == 0) { - Tcl_Panic("canvas did not pass any coords\n"); - } - - /* - * Carry out initialization that is needed in order to clean up after - * errors during the the remainder of this function. - */ - - textPtr->textInfoPtr = Tk_CanvasGetTextInfo(canvas); - - textPtr->insertPos = 0; - - textPtr->anchor = TK_ANCHOR_CENTER; - textPtr->tsoffset.flags = 0; - textPtr->tsoffset.xoffset = 0; - textPtr->tsoffset.yoffset = 0; - textPtr->color = NULL; - textPtr->activeColor = NULL; - textPtr->disabledColor = NULL; - textPtr->tkfont = NULL; - textPtr->justify = TK_JUSTIFY_LEFT; - textPtr->stipple = None; - textPtr->activeStipple = None; - textPtr->disabledStipple = None; - textPtr->text = NULL; - textPtr->width = 0; - textPtr->underline = -1; - - textPtr->numChars = 0; - textPtr->numBytes = 0; - textPtr->textLayout = NULL; - textPtr->leftEdge = 0; - textPtr->rightEdge = 0; - textPtr->gc = None; - textPtr->selTextGC = None; - textPtr->cursorOffGC = None; - - /* - * Process the arguments to fill in the item record. Only 1 (list) or 2 (x - * y) coords are allowed. - */ - - if (objc == 1) { - i = 1; - } else { - char *arg = Tcl_GetString(objv[1]); - i = 2; - if ((arg[0] == '-') && (arg[1] >= 'a') && (arg[1] <= 'z')) { - i = 1; - } - } - if ((TextCoords(interp, canvas, itemPtr, i, objv) != TCL_OK)) { - goto error; - } - if (ConfigureText(interp, canvas, itemPtr, objc-i, objv+i, 0) == TCL_OK) { - return TCL_OK; - } - - error: - DeleteText(canvas, itemPtr, Tk_Display(Tk_CanvasTkwin(canvas))); - return TCL_ERROR; -} - -/* - *-------------------------------------------------------------- - * - * TextCoords -- - * - * This function is invoked to process the "coords" widget command on - * text items. See the user documentation for details on what it does. - * - * Results: - * Returns TCL_OK or TCL_ERROR, and sets the interp's result. - * - * Side effects: - * The coordinates for the given item may be changed. - * - *-------------------------------------------------------------- - */ - -static int -TextCoords( - Tcl_Interp *interp, /* Used for error reporting. */ - Tk_Canvas canvas, /* Canvas containing item. */ - Tk_Item *itemPtr, /* Item whose coordinates are to be read or - * modified. */ - int objc, /* Number of coordinates supplied in objv. */ - Tcl_Obj *CONST objv[]) /* Array of coordinates: x1, y1, x2, y2, ... */ -{ - TextItem *textPtr = (TextItem *) itemPtr; - - if (objc == 0) { - Tcl_Obj *obj = Tcl_NewObj(); - - Tcl_Obj *subobj = Tcl_NewDoubleObj(textPtr->x); - Tcl_ListObjAppendElement(interp, obj, subobj); - subobj = Tcl_NewDoubleObj(textPtr->y); - Tcl_ListObjAppendElement(interp, obj, subobj); - Tcl_SetObjResult(interp, obj); - } else if (objc < 3) { - if (objc==1) { - if (Tcl_ListObjGetElements(interp, objv[0], &objc, - (Tcl_Obj ***) &objv) != TCL_OK) { - return TCL_ERROR; - } else if (objc != 2) { - char buf[64 + TCL_INTEGER_SPACE]; - - sprintf(buf, "wrong # coordinates: expected 2, got %d", objc); - Tcl_SetResult(interp, buf, TCL_VOLATILE); - return TCL_ERROR; - } - } - if ((Tk_CanvasGetCoordFromObj(interp, canvas, objv[0], &textPtr->x) != TCL_OK) - || (Tk_CanvasGetCoordFromObj(interp, canvas, objv[1], - &textPtr->y) != TCL_OK)) { - return TCL_ERROR; - } - ComputeTextBbox(canvas, textPtr); - } else { - char buf[64 + TCL_INTEGER_SPACE]; - - sprintf(buf, "wrong # coordinates: expected 0 or 2, got %d", objc); - Tcl_SetResult(interp, buf, TCL_VOLATILE); - return TCL_ERROR; - } - return TCL_OK; -} - -/* - *-------------------------------------------------------------- - * - * ConfigureText -- - * - * This function is invoked to configure various aspects of a text item, - * such as its border and background colors. - * - * Results: - * A standard Tcl result code. If an error occurs, then an error message - * is left in the interp's result. - * - * Side effects: - * Configuration information, such as colors and stipple patterns, may be - * set for itemPtr. - * - *-------------------------------------------------------------- - */ - -static int -ConfigureText( - Tcl_Interp *interp, /* Interpreter for error reporting. */ - Tk_Canvas canvas, /* Canvas containing itemPtr. */ - Tk_Item *itemPtr, /* Rectangle item to reconfigure. */ - int objc, /* Number of elements in objv. */ - Tcl_Obj *CONST objv[], /* Arguments describing things to configure. */ - int flags) /* Flags to pass to Tk_ConfigureWidget. */ -{ - TextItem *textPtr = (TextItem *) itemPtr; - XGCValues gcValues; - GC newGC, newSelGC; - unsigned long mask; - Tk_Window tkwin; - Tk_CanvasTextInfo *textInfoPtr = textPtr->textInfoPtr; - XColor *selBgColorPtr; - XColor *color; - Pixmap stipple; - Tk_State state; - - tkwin = Tk_CanvasTkwin(canvas); - if (TCL_OK != Tk_ConfigureWidget(interp, tkwin, configSpecs, objc, - (CONST char **) objv, (char *) textPtr, flags|TK_CONFIG_OBJS)) { - return TCL_ERROR; - } - - /* - * A few of the options require additional processing, such as graphics - * contexts. - */ - - state = itemPtr->state; - - if (textPtr->activeColor != NULL || - textPtr->activeStipple != None) { - itemPtr->redraw_flags |= TK_ITEM_STATE_DEPENDANT; - } else { - itemPtr->redraw_flags &= ~TK_ITEM_STATE_DEPENDANT; - } - - if(state == TK_STATE_NULL) { - state = ((TkCanvas *)canvas)->canvas_state; - } - - color = textPtr->color; - stipple = textPtr->stipple; - if (((TkCanvas *)canvas)->currentItemPtr == itemPtr) { - if (textPtr->activeColor!=NULL) { - color = textPtr->activeColor; - } - if (textPtr->activeStipple!=None) { - stipple = textPtr->activeStipple; - } - } else if (state==TK_STATE_DISABLED) { - if (textPtr->disabledColor!=NULL) { - color = textPtr->disabledColor; - } - if (textPtr->disabledStipple!=None) { - stipple = textPtr->disabledStipple; - } - } - - newGC = newSelGC = None; - if (textPtr->tkfont != NULL) { - gcValues.font = Tk_FontId(textPtr->tkfont); - mask = GCFont; - if (color != NULL) { - gcValues.foreground = color->pixel; - mask |= GCForeground; - if (stipple != None) { - gcValues.stipple = stipple; - gcValues.fill_style = FillStippled; - mask |= GCStipple|GCFillStyle; - } - newGC = Tk_GetGC(tkwin, mask, &gcValues); - } - mask &= ~(GCTile|GCFillStyle|GCStipple); - if (stipple != None) { - gcValues.stipple = stipple; - gcValues.fill_style = FillStippled; - mask |= GCStipple|GCFillStyle; - } - gcValues.foreground = textInfoPtr->selFgColorPtr->pixel; - newSelGC = Tk_GetGC(tkwin, mask|GCForeground, &gcValues); - } - if (textPtr->gc != None) { - Tk_FreeGC(Tk_Display(tkwin), textPtr->gc); - } - textPtr->gc = newGC; - if (textPtr->selTextGC != None) { - Tk_FreeGC(Tk_Display(tkwin), textPtr->selTextGC); - } - textPtr->selTextGC = newSelGC; - - selBgColorPtr = Tk_3DBorderColor(textInfoPtr->selBorder); - if (Tk_3DBorderColor(textInfoPtr->insertBorder)->pixel - == selBgColorPtr->pixel) { - if (selBgColorPtr->pixel == BlackPixelOfScreen(Tk_Screen(tkwin))) { - gcValues.foreground = WhitePixelOfScreen(Tk_Screen(tkwin)); - } else { - gcValues.foreground = BlackPixelOfScreen(Tk_Screen(tkwin)); - } - newGC = Tk_GetGC(tkwin, GCForeground, &gcValues); - } else { - newGC = None; - } - if (textPtr->cursorOffGC != None) { - Tk_FreeGC(Tk_Display(tkwin), textPtr->cursorOffGC); - } - textPtr->cursorOffGC = newGC; - - - /* - * If the text was changed, move the selection and insertion indices to - * keep them inside the item. - */ - - textPtr->numBytes = strlen(textPtr->text); - textPtr->numChars = Tcl_NumUtfChars(textPtr->text, textPtr->numBytes); - if (textInfoPtr->selItemPtr == itemPtr) { - - if (textInfoPtr->selectFirst >= textPtr->numChars) { - textInfoPtr->selItemPtr = NULL; - } else { - if (textInfoPtr->selectLast >= textPtr->numChars) { - textInfoPtr->selectLast = textPtr->numChars - 1; - } - if ((textInfoPtr->anchorItemPtr == itemPtr) - && (textInfoPtr->selectAnchor >= textPtr->numChars)) { - textInfoPtr->selectAnchor = textPtr->numChars - 1; - } - } - } - if (textPtr->insertPos >= textPtr->numChars) { - textPtr->insertPos = textPtr->numChars; - } - - ComputeTextBbox(canvas, textPtr); - return TCL_OK; -} - -/* - *-------------------------------------------------------------- - * - * DeleteText -- - * - * This function is called to clean up the data structure associated with - * a text item. - * - * Results: - * None. - * - * Side effects: - * Resources associated with itemPtr are released. - * - *-------------------------------------------------------------- - */ - -static void -DeleteText( - Tk_Canvas canvas, /* Info about overall canvas widget. */ - Tk_Item *itemPtr, /* Item that is being deleted. */ - Display *display) /* Display containing window for canvas. */ -{ - TextItem *textPtr = (TextItem *) itemPtr; - - if (textPtr->color != NULL) { - Tk_FreeColor(textPtr->color); - } - if (textPtr->activeColor != NULL) { - Tk_FreeColor(textPtr->activeColor); - } - if (textPtr->disabledColor != NULL) { - Tk_FreeColor(textPtr->disabledColor); - } - Tk_FreeFont(textPtr->tkfont); - if (textPtr->stipple != None) { - Tk_FreeBitmap(display, textPtr->stipple); - } - if (textPtr->activeStipple != None) { - Tk_FreeBitmap(display, textPtr->activeStipple); - } - if (textPtr->disabledStipple != None) { - Tk_FreeBitmap(display, textPtr->disabledStipple); - } - if (textPtr->text != NULL) { - ckfree(textPtr->text); - } - - Tk_FreeTextLayout(textPtr->textLayout); - if (textPtr->gc != None) { - Tk_FreeGC(display, textPtr->gc); - } - if (textPtr->selTextGC != None) { - Tk_FreeGC(display, textPtr->selTextGC); - } - if (textPtr->cursorOffGC != None) { - Tk_FreeGC(display, textPtr->cursorOffGC); - } -} - -/* - *-------------------------------------------------------------- - * - * ComputeTextBbox -- - * - * This function is invoked to compute the bounding box of all the pixels - * that may be drawn as part of a text item. In addition, it recomputes - * all of the geometry information used to display a text item or check - * for mouse hits. - * - * Results: - * None. - * - * Side effects: - * The fields x1, y1, x2, and y2 are updated in the header for itemPtr, - * and the linePtr structure is regenerated for itemPtr. - * - *-------------------------------------------------------------- - */ - -static void -ComputeTextBbox( - Tk_Canvas canvas, /* Canvas that contains item. */ - TextItem *textPtr) /* Item whose bbox is to be recomputed. */ -{ - Tk_CanvasTextInfo *textInfoPtr; - int leftX, topY, width, height, fudge; - Tk_State state = textPtr->header.state; - - if(state == TK_STATE_NULL) { - state = ((TkCanvas *)canvas)->canvas_state; - } - - Tk_FreeTextLayout(textPtr->textLayout); - textPtr->textLayout = Tk_ComputeTextLayout(textPtr->tkfont, - textPtr->text, textPtr->numChars, textPtr->width, - textPtr->justify, 0, &width, &height); - - if (state == TK_STATE_HIDDEN || textPtr->color == NULL) { - width = height = 0; - } - - /* - * Use overall geometry information to compute the top-left corner of the - * bounding box for the text item. - */ - - leftX = (int) floor(textPtr->x + 0.5); - topY = (int) floor(textPtr->y + 0.5); - switch (textPtr->anchor) { - case TK_ANCHOR_NW: - case TK_ANCHOR_N: - case TK_ANCHOR_NE: - break; - - case TK_ANCHOR_W: - case TK_ANCHOR_CENTER: - case TK_ANCHOR_E: - topY -= height / 2; - break; - - case TK_ANCHOR_SW: - case TK_ANCHOR_S: - case TK_ANCHOR_SE: - topY -= height; - break; - } - switch (textPtr->anchor) { - case TK_ANCHOR_NW: - case TK_ANCHOR_W: - case TK_ANCHOR_SW: - break; - - case TK_ANCHOR_N: - case TK_ANCHOR_CENTER: - case TK_ANCHOR_S: - leftX -= width / 2; - break; - - case TK_ANCHOR_NE: - case TK_ANCHOR_E: - case TK_ANCHOR_SE: - leftX -= width; - break; - } - - textPtr->leftEdge = leftX; - textPtr->rightEdge = leftX + width; - - /* - * Last of all, update the bounding box for the item. The item's bounding - * box includes the bounding box of all its lines, plus an extra fudge - * factor for the cursor border (which could potentially be quite large). - */ - - textInfoPtr = textPtr->textInfoPtr; - fudge = (textInfoPtr->insertWidth + 1) / 2; - if (textInfoPtr->selBorderWidth > fudge) { - fudge = textInfoPtr->selBorderWidth; - } - textPtr->header.x1 = leftX - fudge; - textPtr->header.y1 = topY; - textPtr->header.x2 = leftX + width + fudge; - textPtr->header.y2 = topY + height; -} - -/* - *-------------------------------------------------------------- - * - * DisplayCanvText -- - * - * This function is invoked to draw a text item in a given drawable. - * - * Results: - * None. - * - * Side effects: - * ItemPtr is drawn in drawable using the transformation information in - * canvas. - * - *-------------------------------------------------------------- - */ - -static void -DisplayCanvText( - Tk_Canvas canvas, /* Canvas that contains item. */ - Tk_Item *itemPtr, /* Item to be displayed. */ - Display *display, /* Display on which to draw item. */ - Drawable drawable, /* Pixmap or window in which to draw item. */ - int x, int y, int width, int height) - /* Describes region of canvas that must be - * redisplayed (not used). */ -{ - TextItem *textPtr; - Tk_CanvasTextInfo *textInfoPtr; - int selFirstChar, selLastChar; - short drawableX, drawableY; - Pixmap stipple; - Tk_State state = itemPtr->state; - - textPtr = (TextItem *) itemPtr; - textInfoPtr = textPtr->textInfoPtr; - - if(state == TK_STATE_NULL) { - state = ((TkCanvas *)canvas)->canvas_state; - } - stipple = textPtr->stipple; - if (((TkCanvas *)canvas)->currentItemPtr == itemPtr) { - if (textPtr->activeStipple!=None) { - stipple = textPtr->activeStipple; - } - } else if (state==TK_STATE_DISABLED) { - if (textPtr->disabledStipple!=None) { - stipple = textPtr->disabledStipple; - } - } - - if (textPtr->gc == None) { - return; - } - - /* - * If we're stippling, then modify the stipple offset in the GC. Be sure - * to reset the offset when done, since the GC is supposed to be - * read-only. - */ - - if (stipple != None) { - Tk_CanvasSetOffset(canvas, textPtr->gc, &textPtr->tsoffset); - } - - selFirstChar = -1; - selLastChar = 0; /* lint. */ - - if (textInfoPtr->selItemPtr == itemPtr) { - selFirstChar = textInfoPtr->selectFirst; - selLastChar = textInfoPtr->selectLast; - if (selLastChar > textPtr->numChars) { - selLastChar = textPtr->numChars - 1; - } - if ((selFirstChar >= 0) && (selFirstChar <= selLastChar)) { - int xFirst, yFirst, hFirst; - int xLast, yLast, wLast; - - /* - * Draw a special background under the selection. - */ - - Tk_CharBbox(textPtr->textLayout, selFirstChar, &xFirst, &yFirst, - NULL, &hFirst); - Tk_CharBbox(textPtr->textLayout, selLastChar, &xLast, &yLast, - &wLast, NULL); - - /* - * If the selection spans the end of this line, then display - * selection background all the way to the end of the line. - * However, for the last line we only want to display up to the - * last character, not the end of the line. - */ - - x = xFirst; - height = hFirst; - for (y = yFirst ; y <= yLast; y += height) { - if (y == yLast) { - width = xLast + wLast - x; - } else { - width = textPtr->rightEdge - textPtr->leftEdge - x; - } - Tk_CanvasDrawableCoords(canvas, - (double) (textPtr->leftEdge + x - - textInfoPtr->selBorderWidth), - (double) (textPtr->header.y1 + y), - &drawableX, &drawableY); - Tk_Fill3DRectangle(Tk_CanvasTkwin(canvas), drawable, - textInfoPtr->selBorder, drawableX, drawableY, - width + 2 * textInfoPtr->selBorderWidth, - height, textInfoPtr->selBorderWidth, TK_RELIEF_RAISED); - x = 0; - } - } - } - - /* - * If the insertion point should be displayed, then draw a special - * background for the cursor before drawing the text. Note: if we're the - * cursor item but the cursor is turned off, then redraw background over - * the area of the cursor. This guarantees that the selection won't make - * the cursor invisible on mono displays, where both are drawn in the same - * color. - */ - - if ((textInfoPtr->focusItemPtr == itemPtr) && (textInfoPtr->gotFocus)) { - if (Tk_CharBbox(textPtr->textLayout, textPtr->insertPos, - &x, &y, NULL, &height)) { - Tk_CanvasDrawableCoords(canvas, - (double) (textPtr->leftEdge + x - - (textInfoPtr->insertWidth / 2)), - (double) (textPtr->header.y1 + y), - &drawableX, &drawableY); - Tk_SetCaretPos(Tk_CanvasTkwin(canvas), drawableX, drawableY, - height); - if (textInfoPtr->cursorOn) { - Tk_Fill3DRectangle(Tk_CanvasTkwin(canvas), drawable, - textInfoPtr->insertBorder, - drawableX, drawableY, - textInfoPtr->insertWidth, height, - textInfoPtr->insertBorderWidth, TK_RELIEF_RAISED); - } else if (textPtr->cursorOffGC != None) { - /* - * Redraw the background over the area of the cursor, even - * though the cursor is turned off. This guarantees that the - * selection won't make the cursor invisible on mono displays, - * where both may be drawn in the same color. - */ - - XFillRectangle(display, drawable, textPtr->cursorOffGC, - drawableX, drawableY, - (unsigned) textInfoPtr->insertWidth, - (unsigned) height); - } - } - } - - /* - * If there is no selected text or the selected text foreground is the - * same as the regular text foreground, then draw one text string. If - * there is selected text and the foregrounds differ, draw the regular - * text up to the selection, draw the selection, then draw the rest of the - * regular text. Drawing the regular text and then the selected text over - * it would causes problems with anti-aliased text because the two - * anti-aliasing colors would blend together. - */ - - Tk_CanvasDrawableCoords(canvas, (double) textPtr->leftEdge, - (double) textPtr->header.y1, &drawableX, &drawableY); - - if ((selFirstChar >= 0) && (textPtr->selTextGC != textPtr->gc)) { - Tk_DrawTextLayout(display, drawable, textPtr->gc, textPtr->textLayout, - drawableX, drawableY, 0, selFirstChar); - Tk_DrawTextLayout(display, drawable, textPtr->selTextGC, - textPtr->textLayout, drawableX, drawableY, selFirstChar, - selLastChar + 1); - Tk_DrawTextLayout(display, drawable, textPtr->gc, textPtr->textLayout, - drawableX, drawableY, selLastChar + 1, -1); - } else { - Tk_DrawTextLayout(display, drawable, textPtr->gc, textPtr->textLayout, - drawableX, drawableY, 0, -1); - } - Tk_UnderlineTextLayout(display, drawable, textPtr->gc, textPtr->textLayout, - drawableX, drawableY, textPtr->underline); - - if (stipple != None) { - XSetTSOrigin(display, textPtr->gc, 0, 0); - } -} - -/* - *-------------------------------------------------------------- - * - * TextInsert -- - * - * Insert characters into a text item at a given position. - * - * Results: - * None. - * - * Side effects: - * The text in the given item is modified. The cursor and selection - * positions are also modified to reflect the insertion. - * - *-------------------------------------------------------------- - */ - -static void -TextInsert( - Tk_Canvas canvas, /* Canvas containing text item. */ - Tk_Item *itemPtr, /* Text item to be modified. */ - int index, /* Character index before which string is to - * be inserted. */ - char *string) /* New characters to be inserted. */ -{ - TextItem *textPtr = (TextItem *) itemPtr; - int byteIndex, byteCount, charsAdded; - char *newStr, *text; - Tk_CanvasTextInfo *textInfoPtr = textPtr->textInfoPtr; - - string = Tcl_GetStringFromObj((Tcl_Obj *) string, &byteCount); - - text = textPtr->text; - - if (index < 0) { - index = 0; - } - if (index > textPtr->numChars) { - index = textPtr->numChars; - } - byteIndex = Tcl_UtfAtIndex(text, index) - text; - byteCount = strlen(string); - if (byteCount == 0) { - return; - } - - newStr = (char *) ckalloc((unsigned) textPtr->numBytes + byteCount + 1); - memcpy(newStr, text, (size_t) byteIndex); - strcpy(newStr + byteIndex, string); - strcpy(newStr + byteIndex + byteCount, text + byteIndex); - - ckfree(text); - textPtr->text = newStr; - charsAdded = Tcl_NumUtfChars(string, byteCount); - textPtr->numChars += charsAdded; - textPtr->numBytes += byteCount; - - /* - * Inserting characters invalidates indices such as those for the - * selection and cursor. Update the indices appropriately. - */ - - if (textInfoPtr->selItemPtr == itemPtr) { - if (textInfoPtr->selectFirst >= index) { - textInfoPtr->selectFirst += charsAdded; - } - if (textInfoPtr->selectLast >= index) { - textInfoPtr->selectLast += charsAdded; - } - if ((textInfoPtr->anchorItemPtr == itemPtr) - && (textInfoPtr->selectAnchor >= index)) { - textInfoPtr->selectAnchor += charsAdded; - } - } - if (textPtr->insertPos >= index) { - textPtr->insertPos += charsAdded; - } - ComputeTextBbox(canvas, textPtr); -} - -/* - *-------------------------------------------------------------- - * - * TextDeleteChars -- - * - * Delete one or more characters from a text item. - * - * Results: - * None. - * - * Side effects: - * Characters between "first" and "last", inclusive, get deleted from - * itemPtr, and things like the selection position get updated. - * - *-------------------------------------------------------------- - */ - -static void -TextDeleteChars( - Tk_Canvas canvas, /* Canvas containing itemPtr. */ - Tk_Item *itemPtr, /* Item in which to delete characters. */ - int first, /* Character index of first character to - * delete. */ - int last) /* Character index of last character to delete - * (inclusive). */ -{ - TextItem *textPtr = (TextItem *) itemPtr; - int byteIndex, byteCount, charsRemoved; - char *newStr, *text; - Tk_CanvasTextInfo *textInfoPtr = textPtr->textInfoPtr; - - text = textPtr->text; - if (first < 0) { - first = 0; - } - if (last >= textPtr->numChars) { - last = textPtr->numChars - 1; - } - if (first > last) { - return; - } - charsRemoved = last + 1 - first; - - byteIndex = Tcl_UtfAtIndex(text, first) - text; - byteCount = Tcl_UtfAtIndex(text + byteIndex, charsRemoved) - - (text + byteIndex); - - newStr = (char *) ckalloc((unsigned) (textPtr->numBytes + 1 - byteCount)); - memcpy(newStr, text, (size_t) byteIndex); - strcpy(newStr + byteIndex, text + byteIndex + byteCount); - - ckfree(text); - textPtr->text = newStr; - textPtr->numChars -= charsRemoved; - textPtr->numBytes -= byteCount; - - /* - * Update indexes for the selection and cursor to reflect the renumbering - * of the remaining characters. - */ - - if (textInfoPtr->selItemPtr == itemPtr) { - if (textInfoPtr->selectFirst > first) { - textInfoPtr->selectFirst -= charsRemoved; - if (textInfoPtr->selectFirst < first) { - textInfoPtr->selectFirst = first; - } - } - if (textInfoPtr->selectLast >= first) { - textInfoPtr->selectLast -= charsRemoved; - if (textInfoPtr->selectLast < first - 1) { - textInfoPtr->selectLast = first - 1; - } - } - if (textInfoPtr->selectFirst > textInfoPtr->selectLast) { - textInfoPtr->selItemPtr = NULL; - } - if ((textInfoPtr->anchorItemPtr == itemPtr) - && (textInfoPtr->selectAnchor > first)) { - textInfoPtr->selectAnchor -= charsRemoved; - if (textInfoPtr->selectAnchor < first) { - textInfoPtr->selectAnchor = first; - } - } - } - if (textPtr->insertPos > first) { - textPtr->insertPos -= charsRemoved; - if (textPtr->insertPos < first) { - textPtr->insertPos = first; - } - } - ComputeTextBbox(canvas, textPtr); - return; -} - -/* - *-------------------------------------------------------------- - * - * TextToPoint -- - * - * Computes the distance from a given point to a given text item, in - * canvas units. - * - * Results: - * The return value is 0 if the point whose x and y coordinates are - * pointPtr[0] and pointPtr[1] is inside the text item. If the point - * isn't inside the text item then the return value is the distance from - * the point to the text item. - * - * Side effects: - * None. - * - *-------------------------------------------------------------- - */ - -static double -TextToPoint( - Tk_Canvas canvas, /* Canvas containing itemPtr. */ - Tk_Item *itemPtr, /* Item to check against point. */ - double *pointPtr) /* Pointer to x and y coordinates. */ -{ - TextItem *textPtr; - Tk_State state = itemPtr->state; - double value; - - if (state == TK_STATE_NULL) { - state = ((TkCanvas *)canvas)->canvas_state; - } - textPtr = (TextItem *) itemPtr; - value = (double) Tk_DistanceToTextLayout(textPtr->textLayout, - (int) pointPtr[0] - textPtr->leftEdge, - (int) pointPtr[1] - textPtr->header.y1); - - if ((state == TK_STATE_HIDDEN) || (textPtr->color == NULL) || - (textPtr->text == NULL) || (*textPtr->text == 0)) { - value = 1.0e36; - } - return value; -} - -/* - *-------------------------------------------------------------- - * - * TextToArea -- - * - * This function is called to determine whether an item lies entirely - * inside, entirely outside, or overlapping a given rectangle. - * - * Results: - * -1 is returned if the item is entirely outside the area given by - * rectPtr, 0 if it overlaps, and 1 if it is entirely inside the given - * area. - * - * Side effects: - * None. - * - *-------------------------------------------------------------- - */ - -static int -TextToArea( - Tk_Canvas canvas, /* Canvas containing itemPtr. */ - Tk_Item *itemPtr, /* Item to check against rectangle. */ - double *rectPtr) /* Pointer to array of four coordinates - * (x1,y1,x2,y2) describing rectangular - * area. */ -{ - TextItem *textPtr; - Tk_State state = itemPtr->state; - - if (state == TK_STATE_NULL) { - state = ((TkCanvas *)canvas)->canvas_state; - } - - textPtr = (TextItem *) itemPtr; - return Tk_IntersectTextLayout(textPtr->textLayout, - (int) (rectPtr[0] + 0.5) - textPtr->leftEdge, - (int) (rectPtr[1] + 0.5) - textPtr->header.y1, - (int) (rectPtr[2] - rectPtr[0] + 0.5), - (int) (rectPtr[3] - rectPtr[1] + 0.5)); -} - -/* - *-------------------------------------------------------------- - * - * ScaleText -- - * - * This function is invoked to rescale a text item. - * - * Results: - * None. - * - * Side effects: - * Scales the position of the text, but not the size of the font for the - * text. - * - *-------------------------------------------------------------- - */ - - /* ARGSUSED */ -static void -ScaleText( - Tk_Canvas canvas, /* Canvas containing rectangle. */ - Tk_Item *itemPtr, /* Rectangle to be scaled. */ - double originX, double originY, - /* Origin about which to scale rect. */ - double scaleX, /* Amount to scale in X direction. */ - double scaleY) /* Amount to scale in Y direction. */ -{ - TextItem *textPtr = (TextItem *) itemPtr; - - textPtr->x = originX + scaleX*(textPtr->x - originX); - textPtr->y = originY + scaleY*(textPtr->y - originY); - ComputeTextBbox(canvas, textPtr); - return; -} - -/* - *-------------------------------------------------------------- - * - * TranslateText -- - * - * This function is called to move a text item by a given amount. - * - * Results: - * None. - * - * Side effects: - * The position of the text item is offset by (xDelta, yDelta), and the - * bounding box is updated in the generic part of the item structure. - * - *-------------------------------------------------------------- - */ - -static void -TranslateText( - Tk_Canvas canvas, /* Canvas containing item. */ - Tk_Item *itemPtr, /* Item that is being moved. */ - double deltaX, double deltaY) - /* Amount by which item is to be moved. */ -{ - TextItem *textPtr = (TextItem *) itemPtr; - - textPtr->x += deltaX; - textPtr->y += deltaY; - ComputeTextBbox(canvas, textPtr); -} - -/* - *-------------------------------------------------------------- - * - * GetTextIndex -- - * - * Parse an index into a text item and return either its value or an - * error. - * - * Results: - * A standard Tcl result. If all went well, then *indexPtr is filled in - * with the index (into itemPtr) corresponding to string. Otherwise an - * error message is left in the interp's result. - * - * Side effects: - * None. - * - *-------------------------------------------------------------- - */ - -static int -GetTextIndex( - Tcl_Interp *interp, /* Used for error reporting. */ - Tk_Canvas canvas, /* Canvas containing item. */ - Tk_Item *itemPtr, /* Item for which the index is being - * specified. */ - Tcl_Obj *obj, /* Specification of a particular character in - * itemPtr's text. */ - int *indexPtr) /* Where to store converted character - * index. */ -{ - TextItem *textPtr = (TextItem *) itemPtr; - int length; - int c; - TkCanvas *canvasPtr = (TkCanvas *) canvas; - Tk_CanvasTextInfo *textInfoPtr = textPtr->textInfoPtr; - char *string = Tcl_GetStringFromObj(obj, &length); - - c = string[0]; - - if ((c == 'e') && (strncmp(string, "end", (unsigned) length) == 0)) { - *indexPtr = textPtr->numChars; - } else if ((c == 'i') - && (strncmp(string, "insert", (unsigned) length) == 0)) { - *indexPtr = textPtr->insertPos; - } else if ((c == 's') && (length >= 5) - && (strncmp(string, "sel.first", (unsigned) length) == 0)) { - if (textInfoPtr->selItemPtr != itemPtr) { - Tcl_SetResult(interp, "selection isn't in item", TCL_STATIC); - return TCL_ERROR; - } - *indexPtr = textInfoPtr->selectFirst; - } else if ((c == 's') && (length >= 5) - && (strncmp(string, "sel.last", (unsigned) length) == 0)) { - if (textInfoPtr->selItemPtr != itemPtr) { - Tcl_SetResult(interp, "selection isn't in item", TCL_STATIC); - return TCL_ERROR; - } - *indexPtr = textInfoPtr->selectLast; - } else if (c == '@') { - int x, y; - double tmp; - char *end, *p; - - p = string+1; - tmp = strtod(p, &end); - if ((end == p) || (*end != ',')) { - goto badIndex; - } - x = (int) ((tmp < 0) ? tmp - 0.5 : tmp + 0.5); - p = end+1; - tmp = strtod(p, &end); - if ((end == p) || (*end != 0)) { - goto badIndex; - } - y = (int) ((tmp < 0) ? tmp - 0.5 : tmp + 0.5); - *indexPtr = Tk_PointToChar(textPtr->textLayout, - x + canvasPtr->scrollX1 - textPtr->leftEdge, - y + canvasPtr->scrollY1 - textPtr->header.y1); - } else if (Tcl_GetIntFromObj(NULL, obj, indexPtr) == TCL_OK) { - if (*indexPtr < 0){ - *indexPtr = 0; - } else if (*indexPtr > textPtr->numChars) { - *indexPtr = textPtr->numChars; - } - } else { - /* - * Some of the paths here leave messages in the interp's result, so we - * have to clear it out before storing our own message. - */ - - badIndex: - Tcl_SetResult(interp, NULL, TCL_STATIC); - Tcl_AppendResult(interp, "bad index \"", string, "\"", NULL); - return TCL_ERROR; - } - return TCL_OK; -} - -/* - *-------------------------------------------------------------- - * - * SetTextCursor -- - * - * Set the position of the insertion cursor in this item. - * - * Results: - * None. - * - * Side effects: - * The cursor position will change. - * - *-------------------------------------------------------------- - */ - - /* ARGSUSED */ -static void -SetTextCursor( - Tk_Canvas canvas, /* Record describing canvas widget. */ - Tk_Item *itemPtr, /* Text item in which cursor position is to be - * set. */ - int index) /* Character index of character just before - * which cursor is to be positioned. */ -{ - TextItem *textPtr = (TextItem *) itemPtr; - - if (index < 0) { - textPtr->insertPos = 0; - } else if (index > textPtr->numChars) { - textPtr->insertPos = textPtr->numChars; - } else { - textPtr->insertPos = index; - } -} - -/* - *-------------------------------------------------------------- - * - * GetSelText -- - * - * This function is invoked to return the selected portion of a text - * item. It is only called when this item has the selection. - * - * Results: - * The return value is the number of non-NULL bytes stored at buffer. - * Buffer is filled (or partially filled) with a NULL-terminated string - * containing part or all of the selection, as given by offset and - * maxBytes. - * - * Side effects: - * None. - * - *-------------------------------------------------------------- - */ - -static int -GetSelText( - Tk_Canvas canvas, /* Canvas containing selection. */ - Tk_Item *itemPtr, /* Text item containing selection. */ - int offset, /* Byte offset within selection of first - * character to be returned. */ - char *buffer, /* Location in which to place selection. */ - int maxBytes) /* Maximum number of bytes to place at buffer, - * not including terminating NULL - * character. */ -{ - TextItem *textPtr = (TextItem *) itemPtr; - int byteCount; - char *text; - CONST char *selStart, *selEnd; - Tk_CanvasTextInfo *textInfoPtr = textPtr->textInfoPtr; - - if ((textInfoPtr->selectFirst < 0) || - (textInfoPtr->selectFirst > textInfoPtr->selectLast)) { - return 0; - } - text = textPtr->text; - selStart = Tcl_UtfAtIndex(text, textInfoPtr->selectFirst); - selEnd = Tcl_UtfAtIndex(selStart, - textInfoPtr->selectLast + 1 - textInfoPtr->selectFirst); - byteCount = selEnd - selStart - offset; - if (byteCount > maxBytes) { - byteCount = maxBytes; - } - if (byteCount <= 0) { - return 0; - } - memcpy(buffer, selStart + offset, (size_t) byteCount); - buffer[byteCount] = '\0'; - return byteCount; -} - -/* - *-------------------------------------------------------------- - * - * TextToPostscript -- - * - * This function is called to generate Postscript for text items. - * - * Results: - * The return value is a standard Tcl result. If an error occurs in - * generating Postscript then an error message is left in the interp's - * result, replacing whatever used to be there. If no error occurs, then - * Postscript for the item is appended to the result. - * - * Side effects: - * None. - * - *-------------------------------------------------------------- - */ - -static int -TextToPostscript( - Tcl_Interp *interp, /* Leave Postscript or error message here. */ - Tk_Canvas canvas, /* Information about overall canvas. */ - Tk_Item *itemPtr, /* Item for which Postscript is wanted. */ - int prepass) /* 1 means this is a prepass to collect font - * information; 0 means final Postscript is - * being created. */ -{ - TextItem *textPtr = (TextItem *) itemPtr; - int x, y; - Tk_FontMetrics fm; - char *justify; - char buffer[500]; - XColor *color; - Pixmap stipple; - Tk_State state = itemPtr->state; - - if (state == TK_STATE_NULL) { - state = ((TkCanvas *)canvas)->canvas_state; - } - color = textPtr->color; - stipple = textPtr->stipple; - if (state == TK_STATE_HIDDEN || textPtr->color == NULL || - textPtr->text == NULL || *textPtr->text == 0) { - return TCL_OK; - } else if (((TkCanvas *)canvas)->currentItemPtr == itemPtr) { - if (textPtr->activeColor!=NULL) { - color = textPtr->activeColor; - } - if (textPtr->activeStipple!=None) { - stipple = textPtr->activeStipple; - } - } else if (state==TK_STATE_DISABLED) { - if (textPtr->disabledColor!=NULL) { - color = textPtr->disabledColor; - } - if (textPtr->disabledStipple!=None) { - stipple = textPtr->disabledStipple; - } - } - - if (Tk_CanvasPsFont(interp, canvas, textPtr->tkfont) != TCL_OK) { - return TCL_ERROR; - } - if (prepass != 0) { - return TCL_OK; - } - if (Tk_CanvasPsColor(interp, canvas, color) != TCL_OK) { - return TCL_ERROR; - } - if (stipple != None) { - Tcl_AppendResult(interp, "/StippleText {\n ", NULL); - Tk_CanvasPsStipple(interp, canvas, stipple); - Tcl_AppendResult(interp, "} bind def\n", NULL); - } - - sprintf(buffer, "%.15g %.15g [\n", textPtr->x, - Tk_CanvasPsY(canvas, textPtr->y)); - Tcl_AppendResult(interp, buffer, NULL); - - Tk_TextLayoutToPostscript(interp, textPtr->textLayout); - - x = 0; y = 0; justify = NULL; /* lint. */ - switch (textPtr->anchor) { - case TK_ANCHOR_NW: x = 0; y = 0; break; - case TK_ANCHOR_N: x = 1; y = 0; break; - case TK_ANCHOR_NE: x = 2; y = 0; break; - case TK_ANCHOR_E: x = 2; y = 1; break; - case TK_ANCHOR_SE: x = 2; y = 2; break; - case TK_ANCHOR_S: x = 1; y = 2; break; - case TK_ANCHOR_SW: x = 0; y = 2; break; - case TK_ANCHOR_W: x = 0; y = 1; break; - case TK_ANCHOR_CENTER: x = 1; y = 1; break; - } - switch (textPtr->justify) { - case TK_JUSTIFY_LEFT: justify = "0"; break; - case TK_JUSTIFY_CENTER: justify = "0.5"; break; - case TK_JUSTIFY_RIGHT: justify = "1"; break; - } - - Tk_GetFontMetrics(textPtr->tkfont, &fm); - sprintf(buffer, "] %d %g %g %s %s DrawText\n", - fm.linespace, x / -2.0, y / 2.0, justify, - ((stipple == None) ? "false" : "true")); - Tcl_AppendResult(interp, buffer, NULL); - - return TCL_OK; -} - -/* - * Local Variables: - * mode: c - * c-basic-offset: 4 - * fill-column: 78 - * End: - */ +/* + * tkCanvText.c -- + * + * This file implements text items for canvas widgets. + * + * Copyright (c) 1991-1994 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. + * + * RCS: @(#) $Id: tkCanvText.c,v 1.22 2007/02/12 21:41:47 dkf Exp $ + */ + +#include +#include "tkInt.h" +#include "tkCanvas.h" +#include "tkPort.h" +#include "default.h" + +/* + * The structure below defines the record for each text item. + */ + +typedef struct TextItem { + Tk_Item header; /* Generic stuff that's the same for all + * types. MUST BE FIRST IN STRUCTURE. */ + Tk_CanvasTextInfo *textInfoPtr; + /* Pointer to a structure containing + * information about the selection and + * insertion cursor. The structure is owned by + * (and shared with) the generic canvas + * code. */ + /* + * Fields that are set by widget commands other than "configure". + */ + + double x, y; /* Positioning point for text. */ + int insertPos; /* Character index of character just before + * which the insertion cursor is displayed. */ + + /* + * Configuration settings that are updated by Tk_ConfigureWidget. + */ + + Tk_Anchor anchor; /* Where to anchor text relative to (x,y). */ + Tk_TSOffset tsoffset; + XColor *color; /* Color for text. */ + XColor *activeColor; /* Color for text. */ + XColor *disabledColor; /* Color for text. */ + Tk_Font tkfont; /* Font for drawing text. */ + Tk_Justify justify; /* Justification mode for text. */ + Pixmap stipple; /* Stipple bitmap for text, or None. */ + Pixmap activeStipple; /* Stipple bitmap for text, or None. */ + Pixmap disabledStipple; /* Stipple bitmap for text, or None. */ + char *text; /* Text for item (malloc-ed). */ + int width; /* Width of lines for word-wrap, pixels. Zero + * means no word-wrap. */ + int underline; /* Index of character to put underline beneath + * or -1 for no underlining. */ + + /* + * Fields whose values are derived from the current values of the + * configuration settings above. + */ + + int numChars; /* Length of text in characters. */ + int numBytes; /* Length of text in bytes. */ + Tk_TextLayout textLayout; /* Cached text layout information. */ + int leftEdge; /* Pixel location of the left edge of the text + * item; where the left border of the text + * layout is drawn. */ + int rightEdge; /* Pixel just to right of right edge of area + * of text item. Used for selecting up to end + * of line. */ + GC gc; /* Graphics context for drawing text. */ + GC selTextGC; /* Graphics context for selected text. */ + GC cursorOffGC; /* If not None, this gives a graphics context + * to use to draw the insertion cursor when + * it's off. Used if the selection and + * insertion cursor colors are the same. */ +} TextItem; + +/* + * Information used for parsing configuration specs: + */ + +static Tk_CustomOption stateOption = { + (Tk_OptionParseProc *) TkStateParseProc, + TkStatePrintProc, (ClientData) 2 +}; +static Tk_CustomOption tagsOption = { + (Tk_OptionParseProc *) Tk_CanvasTagsParseProc, + Tk_CanvasTagsPrintProc, (ClientData) NULL +}; +static Tk_CustomOption offsetOption = { + (Tk_OptionParseProc *) TkOffsetParseProc, + TkOffsetPrintProc, (ClientData) (TK_OFFSET_RELATIVE) +}; + +static Tk_ConfigSpec configSpecs[] = { + {TK_CONFIG_COLOR, "-activefill", NULL, NULL, + NULL, Tk_Offset(TextItem, activeColor), TK_CONFIG_NULL_OK}, + {TK_CONFIG_BITMAP, "-activestipple", NULL, NULL, + NULL, Tk_Offset(TextItem, activeStipple), TK_CONFIG_NULL_OK}, + {TK_CONFIG_ANCHOR, "-anchor", NULL, NULL, + "center", Tk_Offset(TextItem, anchor), TK_CONFIG_DONT_SET_DEFAULT}, + {TK_CONFIG_COLOR, "-disabledfill", NULL, NULL, + NULL, Tk_Offset(TextItem, disabledColor), TK_CONFIG_NULL_OK}, + {TK_CONFIG_BITMAP, "-disabledstipple", NULL, NULL, + NULL, Tk_Offset(TextItem, disabledStipple), TK_CONFIG_NULL_OK}, + {TK_CONFIG_COLOR, "-fill", NULL, NULL, + "black", Tk_Offset(TextItem, color), TK_CONFIG_NULL_OK}, + {TK_CONFIG_FONT, "-font", NULL, NULL, + DEF_CANVTEXT_FONT, Tk_Offset(TextItem, tkfont), 0}, + {TK_CONFIG_JUSTIFY, "-justify", NULL, NULL, + "left", Tk_Offset(TextItem, justify), TK_CONFIG_DONT_SET_DEFAULT}, + {TK_CONFIG_CUSTOM, "-offset", NULL, NULL, + "0,0", Tk_Offset(TextItem, tsoffset), + TK_CONFIG_DONT_SET_DEFAULT, &offsetOption}, + {TK_CONFIG_CUSTOM, "-state", NULL, NULL, + NULL, Tk_Offset(Tk_Item, state), TK_CONFIG_NULL_OK, &stateOption}, + {TK_CONFIG_BITMAP, "-stipple", NULL, NULL, + NULL, Tk_Offset(TextItem, stipple), TK_CONFIG_NULL_OK}, + {TK_CONFIG_CUSTOM, "-tags", NULL, NULL, + NULL, 0, TK_CONFIG_NULL_OK, &tagsOption}, + {TK_CONFIG_STRING, "-text", NULL, NULL, + "", Tk_Offset(TextItem, text), 0}, + {TK_CONFIG_INT, "-underline", NULL, NULL, + "-1", Tk_Offset(TextItem, underline), 0}, + {TK_CONFIG_PIXELS, "-width", NULL, NULL, + "0", Tk_Offset(TextItem, width), TK_CONFIG_DONT_SET_DEFAULT}, + {TK_CONFIG_END, NULL, NULL, NULL, NULL, 0, 0} +}; + +/* + * Prototypes for functions defined in this file: + */ + +static void ComputeTextBbox(Tk_Canvas canvas, TextItem *textPtr); +static int ConfigureText(Tcl_Interp *interp, + Tk_Canvas canvas, Tk_Item *itemPtr, int argc, + Tcl_Obj *CONST objv[], int flags); +static int CreateText(Tcl_Interp *interp, + Tk_Canvas canvas, struct Tk_Item *itemPtr, + int argc, Tcl_Obj *CONST objv[]); +static void DeleteText(Tk_Canvas canvas, + Tk_Item *itemPtr, Display *display); +static void DisplayCanvText(Tk_Canvas canvas, + Tk_Item *itemPtr, Display *display, Drawable dst, + int x, int y, int width, int height); +static int GetSelText(Tk_Canvas canvas, + Tk_Item *itemPtr, int offset, char *buffer, + int maxBytes); +static int GetTextIndex(Tcl_Interp *interp, + Tk_Canvas canvas, Tk_Item *itemPtr, + Tcl_Obj *obj, int *indexPtr); +static void ScaleText(Tk_Canvas canvas, + Tk_Item *itemPtr, double originX, double originY, + double scaleX, double scaleY); +static void SetTextCursor(Tk_Canvas canvas, + Tk_Item *itemPtr, int index); +static int TextCoords(Tcl_Interp *interp, + Tk_Canvas canvas, Tk_Item *itemPtr, + int argc, Tcl_Obj *CONST objv[]); +static void TextDeleteChars(Tk_Canvas canvas, + Tk_Item *itemPtr, int first, int last); +static void TextInsert(Tk_Canvas canvas, + Tk_Item *itemPtr, int beforeThis, char *string); +static int TextToArea(Tk_Canvas canvas, + Tk_Item *itemPtr, double *rectPtr); +static double TextToPoint(Tk_Canvas canvas, + Tk_Item *itemPtr, double *pointPtr); +static int TextToPostscript(Tcl_Interp *interp, + Tk_Canvas canvas, Tk_Item *itemPtr, int prepass); +static void TranslateText(Tk_Canvas canvas, + Tk_Item *itemPtr, double deltaX, double deltaY); + +/* + * The structures below defines the rectangle and oval item types by means of + * functions that can be invoked by generic item code. + */ + +Tk_ItemType tkTextType = { + "text", /* name */ + sizeof(TextItem), /* itemSize */ + CreateText, /* createProc */ + configSpecs, /* configSpecs */ + ConfigureText, /* configureProc */ + TextCoords, /* coordProc */ + DeleteText, /* deleteProc */ + DisplayCanvText, /* displayProc */ + TK_CONFIG_OBJS, /* flags */ + TextToPoint, /* pointProc */ + TextToArea, /* areaProc */ + TextToPostscript, /* postscriptProc */ + ScaleText, /* scaleProc */ + TranslateText, /* translateProc */ + (Tk_ItemIndexProc *) GetTextIndex,/* indexProc */ + SetTextCursor, /* icursorProc */ + GetSelText, /* selectionProc */ + TextInsert, /* insertProc */ + TextDeleteChars, /* dTextProc */ + NULL, /* nextPtr */ +}; + +/* + *-------------------------------------------------------------- + * + * CreateText -- + * + * This function is invoked to create a new text item in a canvas. + * + * Results: + * A standard Tcl return value. If an error occurred in creating the item + * then an error message is left in the interp's result; in this case + * itemPtr is left uninitialized so it can be safely freed by the caller. + * + * Side effects: + * A new text item is created. + * + *-------------------------------------------------------------- + */ + +static int +CreateText( + Tcl_Interp *interp, /* Interpreter for error reporting. */ + Tk_Canvas canvas, /* Canvas to hold new item. */ + Tk_Item *itemPtr, /* Record to hold new item; header has been + * initialized by caller. */ + int objc, /* Number of arguments in objv. */ + Tcl_Obj *CONST objv[]) /* Arguments describing rectangle. */ +{ + TextItem *textPtr = (TextItem *) itemPtr; + int i; + + if (objc == 0) { + Tcl_Panic("canvas did not pass any coords\n"); + } + + /* + * Carry out initialization that is needed in order to clean up after + * errors during the the remainder of this function. + */ + + textPtr->textInfoPtr = Tk_CanvasGetTextInfo(canvas); + + textPtr->insertPos = 0; + + textPtr->anchor = TK_ANCHOR_CENTER; + textPtr->tsoffset.flags = 0; + textPtr->tsoffset.xoffset = 0; + textPtr->tsoffset.yoffset = 0; + textPtr->color = NULL; + textPtr->activeColor = NULL; + textPtr->disabledColor = NULL; + textPtr->tkfont = NULL; + textPtr->justify = TK_JUSTIFY_LEFT; + textPtr->stipple = None; + textPtr->activeStipple = None; + textPtr->disabledStipple = None; + textPtr->text = NULL; + textPtr->width = 0; + textPtr->underline = -1; + + textPtr->numChars = 0; + textPtr->numBytes = 0; + textPtr->textLayout = NULL; + textPtr->leftEdge = 0; + textPtr->rightEdge = 0; + textPtr->gc = None; + textPtr->selTextGC = None; + textPtr->cursorOffGC = None; + + /* + * Process the arguments to fill in the item record. Only 1 (list) or 2 (x + * y) coords are allowed. + */ + + if (objc == 1) { + i = 1; + } else { + char *arg = Tcl_GetString(objv[1]); + + i = 2; + if ((arg[0] == '-') && (arg[1] >= 'a') && (arg[1] <= 'z')) { + i = 1; + } + } + if ((TextCoords(interp, canvas, itemPtr, i, objv) != TCL_OK)) { + goto error; + } + if (ConfigureText(interp, canvas, itemPtr, objc-i, objv+i, 0) == TCL_OK) { + return TCL_OK; + } + + error: + DeleteText(canvas, itemPtr, Tk_Display(Tk_CanvasTkwin(canvas))); + return TCL_ERROR; +} + +/* + *-------------------------------------------------------------- + * + * TextCoords -- + * + * This function is invoked to process the "coords" widget command on + * text items. See the user documentation for details on what it does. + * + * Results: + * Returns TCL_OK or TCL_ERROR, and sets the interp's result. + * + * Side effects: + * The coordinates for the given item may be changed. + * + *-------------------------------------------------------------- + */ + +static int +TextCoords( + Tcl_Interp *interp, /* Used for error reporting. */ + Tk_Canvas canvas, /* Canvas containing item. */ + Tk_Item *itemPtr, /* Item whose coordinates are to be read or + * modified. */ + int objc, /* Number of coordinates supplied in objv. */ + Tcl_Obj *CONST objv[]) /* Array of coordinates: x1, y1, x2, y2, ... */ +{ + TextItem *textPtr = (TextItem *) itemPtr; + + if (objc == 0) { + Tcl_Obj *obj = Tcl_NewObj(); + + Tcl_Obj *subobj = Tcl_NewDoubleObj(textPtr->x); + Tcl_ListObjAppendElement(interp, obj, subobj); + subobj = Tcl_NewDoubleObj(textPtr->y); + Tcl_ListObjAppendElement(interp, obj, subobj); + Tcl_SetObjResult(interp, obj); + } else if (objc < 3) { + if (objc==1) { + if (Tcl_ListObjGetElements(interp, objv[0], &objc, + (Tcl_Obj ***) &objv) != TCL_OK) { + return TCL_ERROR; + } else if (objc != 2) { + char buf[64 + TCL_INTEGER_SPACE]; + + sprintf(buf, "wrong # coordinates: expected 2, got %d", objc); + Tcl_SetResult(interp, buf, TCL_VOLATILE); + return TCL_ERROR; + } + } + if ((Tk_CanvasGetCoordFromObj(interp, canvas, objv[0], + &textPtr->x) != TCL_OK) + || (Tk_CanvasGetCoordFromObj(interp, canvas, objv[1], + &textPtr->y) != TCL_OK)) { + return TCL_ERROR; + } + ComputeTextBbox(canvas, textPtr); + } else { + char buf[64 + TCL_INTEGER_SPACE]; + + sprintf(buf, "wrong # coordinates: expected 0 or 2, got %d", objc); + Tcl_SetResult(interp, buf, TCL_VOLATILE); + return TCL_ERROR; + } + return TCL_OK; +} + +/* + *-------------------------------------------------------------- + * + * ConfigureText -- + * + * This function is invoked to configure various aspects of a text item, + * such as its border and background colors. + * + * Results: + * A standard Tcl result code. If an error occurs, then an error message + * is left in the interp's result. + * + * Side effects: + * Configuration information, such as colors and stipple patterns, may be + * set for itemPtr. + * + *-------------------------------------------------------------- + */ + +static int +ConfigureText( + Tcl_Interp *interp, /* Interpreter for error reporting. */ + Tk_Canvas canvas, /* Canvas containing itemPtr. */ + Tk_Item *itemPtr, /* Rectangle item to reconfigure. */ + int objc, /* Number of elements in objv. */ + Tcl_Obj *CONST objv[], /* Arguments describing things to configure. */ + int flags) /* Flags to pass to Tk_ConfigureWidget. */ +{ + TextItem *textPtr = (TextItem *) itemPtr; + XGCValues gcValues; + GC newGC, newSelGC; + unsigned long mask; + Tk_Window tkwin; + Tk_CanvasTextInfo *textInfoPtr = textPtr->textInfoPtr; + XColor *selBgColorPtr; + XColor *color; + Pixmap stipple; + Tk_State state; + + tkwin = Tk_CanvasTkwin(canvas); + if (TCL_OK != Tk_ConfigureWidget(interp, tkwin, configSpecs, objc, + (CONST char **) objv, (char *) textPtr, flags|TK_CONFIG_OBJS)) { + return TCL_ERROR; + } + + /* + * A few of the options require additional processing, such as graphics + * contexts. + */ + + state = itemPtr->state; + + if (textPtr->activeColor != NULL || textPtr->activeStipple != None) { + itemPtr->redraw_flags |= TK_ITEM_STATE_DEPENDANT; + } else { + itemPtr->redraw_flags &= ~TK_ITEM_STATE_DEPENDANT; + } + + if(state == TK_STATE_NULL) { + state = ((TkCanvas *)canvas)->canvas_state; + } + + color = textPtr->color; + stipple = textPtr->stipple; + if (((TkCanvas *)canvas)->currentItemPtr == itemPtr) { + if (textPtr->activeColor!=NULL) { + color = textPtr->activeColor; + } + if (textPtr->activeStipple!=None) { + stipple = textPtr->activeStipple; + } + } else if (state==TK_STATE_DISABLED) { + if (textPtr->disabledColor!=NULL) { + color = textPtr->disabledColor; + } + if (textPtr->disabledStipple!=None) { + stipple = textPtr->disabledStipple; + } + } + + newGC = newSelGC = None; + if (textPtr->tkfont != NULL) { + gcValues.font = Tk_FontId(textPtr->tkfont); + mask = GCFont; + if (color != NULL) { + gcValues.foreground = color->pixel; + mask |= GCForeground; + if (stipple != None) { + gcValues.stipple = stipple; + gcValues.fill_style = FillStippled; + mask |= GCStipple|GCFillStyle; + } + newGC = Tk_GetGC(tkwin, mask, &gcValues); + } + mask &= ~(GCTile|GCFillStyle|GCStipple); + if (stipple != None) { + gcValues.stipple = stipple; + gcValues.fill_style = FillStippled; + mask |= GCStipple|GCFillStyle; + } + gcValues.foreground = textInfoPtr->selFgColorPtr->pixel; + newSelGC = Tk_GetGC(tkwin, mask|GCForeground, &gcValues); + } + if (textPtr->gc != None) { + Tk_FreeGC(Tk_Display(tkwin), textPtr->gc); + } + textPtr->gc = newGC; + if (textPtr->selTextGC != None) { + Tk_FreeGC(Tk_Display(tkwin), textPtr->selTextGC); + } + textPtr->selTextGC = newSelGC; + + selBgColorPtr = Tk_3DBorderColor(textInfoPtr->selBorder); + if (Tk_3DBorderColor(textInfoPtr->insertBorder)->pixel + == selBgColorPtr->pixel) { + if (selBgColorPtr->pixel == BlackPixelOfScreen(Tk_Screen(tkwin))) { + gcValues.foreground = WhitePixelOfScreen(Tk_Screen(tkwin)); + } else { + gcValues.foreground = BlackPixelOfScreen(Tk_Screen(tkwin)); + } + newGC = Tk_GetGC(tkwin, GCForeground, &gcValues); + } else { + newGC = None; + } + if (textPtr->cursorOffGC != None) { + Tk_FreeGC(Tk_Display(tkwin), textPtr->cursorOffGC); + } + textPtr->cursorOffGC = newGC; + + + /* + * If the text was changed, move the selection and insertion indices to + * keep them inside the item. + */ + + textPtr->numBytes = strlen(textPtr->text); + textPtr->numChars = Tcl_NumUtfChars(textPtr->text, textPtr->numBytes); + if (textInfoPtr->selItemPtr == itemPtr) { + + if (textInfoPtr->selectFirst >= textPtr->numChars) { + textInfoPtr->selItemPtr = NULL; + } else { + if (textInfoPtr->selectLast >= textPtr->numChars) { + textInfoPtr->selectLast = textPtr->numChars - 1; + } + if ((textInfoPtr->anchorItemPtr == itemPtr) + && (textInfoPtr->selectAnchor >= textPtr->numChars)) { + textInfoPtr->selectAnchor = textPtr->numChars - 1; + } + } + } + if (textPtr->insertPos >= textPtr->numChars) { + textPtr->insertPos = textPtr->numChars; + } + + ComputeTextBbox(canvas, textPtr); + return TCL_OK; +} + +/* + *-------------------------------------------------------------- + * + * DeleteText -- + * + * This function is called to clean up the data structure associated with + * a text item. + * + * Results: + * None. + * + * Side effects: + * Resources associated with itemPtr are released. + * + *-------------------------------------------------------------- + */ + +static void +DeleteText( + Tk_Canvas canvas, /* Info about overall canvas widget. */ + Tk_Item *itemPtr, /* Item that is being deleted. */ + Display *display) /* Display containing window for canvas. */ +{ + TextItem *textPtr = (TextItem *) itemPtr; + + if (textPtr->color != NULL) { + Tk_FreeColor(textPtr->color); + } + if (textPtr->activeColor != NULL) { + Tk_FreeColor(textPtr->activeColor); + } + if (textPtr->disabledColor != NULL) { + Tk_FreeColor(textPtr->disabledColor); + } + Tk_FreeFont(textPtr->tkfont); + if (textPtr->stipple != None) { + Tk_FreeBitmap(display, textPtr->stipple); + } + if (textPtr->activeStipple != None) { + Tk_FreeBitmap(display, textPtr->activeStipple); + } + if (textPtr->disabledStipple != None) { + Tk_FreeBitmap(display, textPtr->disabledStipple); + } + if (textPtr->text != NULL) { + ckfree(textPtr->text); + } + + Tk_FreeTextLayout(textPtr->textLayout); + if (textPtr->gc != None) { + Tk_FreeGC(display, textPtr->gc); + } + if (textPtr->selTextGC != None) { + Tk_FreeGC(display, textPtr->selTextGC); + } + if (textPtr->cursorOffGC != None) { + Tk_FreeGC(display, textPtr->cursorOffGC); + } +} + +/* + *-------------------------------------------------------------- + * + * ComputeTextBbox -- + * + * This function is invoked to compute the bounding box of all the pixels + * that may be drawn as part of a text item. In addition, it recomputes + * all of the geometry information used to display a text item or check + * for mouse hits. + * + * Results: + * None. + * + * Side effects: + * The fields x1, y1, x2, and y2 are updated in the header for itemPtr, + * and the linePtr structure is regenerated for itemPtr. + * + *-------------------------------------------------------------- + */ + +static void +ComputeTextBbox( + Tk_Canvas canvas, /* Canvas that contains item. */ + TextItem *textPtr) /* Item whose bbox is to be recomputed. */ +{ + Tk_CanvasTextInfo *textInfoPtr; + int leftX, topY, width, height, fudge; + Tk_State state = textPtr->header.state; + + if(state == TK_STATE_NULL) { + state = ((TkCanvas *)canvas)->canvas_state; + } + + Tk_FreeTextLayout(textPtr->textLayout); + textPtr->textLayout = Tk_ComputeTextLayout(textPtr->tkfont, + textPtr->text, textPtr->numChars, textPtr->width, + textPtr->justify, 0, &width, &height); + + if (state == TK_STATE_HIDDEN || textPtr->color == NULL) { + width = height = 0; + } + + /* + * Use overall geometry information to compute the top-left corner of the + * bounding box for the text item. + */ + + leftX = (int) floor(textPtr->x + 0.5); + topY = (int) floor(textPtr->y + 0.5); + switch (textPtr->anchor) { + case TK_ANCHOR_NW: + case TK_ANCHOR_N: + case TK_ANCHOR_NE: + break; + + case TK_ANCHOR_W: + case TK_ANCHOR_CENTER: + case TK_ANCHOR_E: + topY -= height / 2; + break; + + case TK_ANCHOR_SW: + case TK_ANCHOR_S: + case TK_ANCHOR_SE: + topY -= height; + break; + } + switch (textPtr->anchor) { + case TK_ANCHOR_NW: + case TK_ANCHOR_W: + case TK_ANCHOR_SW: + break; + + case TK_ANCHOR_N: + case TK_ANCHOR_CENTER: + case TK_ANCHOR_S: + leftX -= width / 2; + break; + + case TK_ANCHOR_NE: + case TK_ANCHOR_E: + case TK_ANCHOR_SE: + leftX -= width; + break; + } + + textPtr->leftEdge = leftX; + textPtr->rightEdge = leftX + width; + + /* + * Last of all, update the bounding box for the item. The item's bounding + * box includes the bounding box of all its lines, plus an extra fudge + * factor for the cursor border (which could potentially be quite large). + */ + + textInfoPtr = textPtr->textInfoPtr; + fudge = (textInfoPtr->insertWidth + 1) / 2; + if (textInfoPtr->selBorderWidth > fudge) { + fudge = textInfoPtr->selBorderWidth; + } + textPtr->header.x1 = leftX - fudge; + textPtr->header.y1 = topY; + textPtr->header.x2 = leftX + width + fudge; + textPtr->header.y2 = topY + height; +} + +/* + *-------------------------------------------------------------- + * + * DisplayCanvText -- + * + * This function is invoked to draw a text item in a given drawable. + * + * Results: + * None. + * + * Side effects: + * ItemPtr is drawn in drawable using the transformation information in + * canvas. + * + *-------------------------------------------------------------- + */ + +static void +DisplayCanvText( + Tk_Canvas canvas, /* Canvas that contains item. */ + Tk_Item *itemPtr, /* Item to be displayed. */ + Display *display, /* Display on which to draw item. */ + Drawable drawable, /* Pixmap or window in which to draw item. */ + int x, int y, int width, int height) + /* Describes region of canvas that must be + * redisplayed (not used). */ +{ + TextItem *textPtr; + Tk_CanvasTextInfo *textInfoPtr; + int selFirstChar, selLastChar; + short drawableX, drawableY; + Pixmap stipple; + Tk_State state = itemPtr->state; + + textPtr = (TextItem *) itemPtr; + textInfoPtr = textPtr->textInfoPtr; + + if(state == TK_STATE_NULL) { + state = ((TkCanvas *)canvas)->canvas_state; + } + stipple = textPtr->stipple; + if (((TkCanvas *)canvas)->currentItemPtr == itemPtr) { + if (textPtr->activeStipple!=None) { + stipple = textPtr->activeStipple; + } + } else if (state==TK_STATE_DISABLED) { + if (textPtr->disabledStipple!=None) { + stipple = textPtr->disabledStipple; + } + } + + if (textPtr->gc == None) { + return; + } + + /* + * If we're stippling, then modify the stipple offset in the GC. Be sure + * to reset the offset when done, since the GC is supposed to be + * read-only. + */ + + if (stipple != None) { + Tk_CanvasSetOffset(canvas, textPtr->gc, &textPtr->tsoffset); + } + + selFirstChar = -1; + selLastChar = 0; /* lint. */ + + if (textInfoPtr->selItemPtr == itemPtr) { + selFirstChar = textInfoPtr->selectFirst; + selLastChar = textInfoPtr->selectLast; + if (selLastChar > textPtr->numChars) { + selLastChar = textPtr->numChars - 1; + } + if ((selFirstChar >= 0) && (selFirstChar <= selLastChar)) { + int xFirst, yFirst, hFirst; + int xLast, yLast, wLast; + + /* + * Draw a special background under the selection. + */ + + Tk_CharBbox(textPtr->textLayout, selFirstChar, &xFirst, &yFirst, + NULL, &hFirst); + Tk_CharBbox(textPtr->textLayout, selLastChar, &xLast, &yLast, + &wLast, NULL); + + /* + * If the selection spans the end of this line, then display + * selection background all the way to the end of the line. + * However, for the last line we only want to display up to the + * last character, not the end of the line. + */ + + x = xFirst; + height = hFirst; + for (y = yFirst ; y <= yLast; y += height) { + if (y == yLast) { + width = xLast + wLast - x; + } else { + width = textPtr->rightEdge - textPtr->leftEdge - x; + } + Tk_CanvasDrawableCoords(canvas, + (double) (textPtr->leftEdge + x + - textInfoPtr->selBorderWidth), + (double) (textPtr->header.y1 + y), + &drawableX, &drawableY); + Tk_Fill3DRectangle(Tk_CanvasTkwin(canvas), drawable, + textInfoPtr->selBorder, drawableX, drawableY, + width + 2 * textInfoPtr->selBorderWidth, + height, textInfoPtr->selBorderWidth, TK_RELIEF_RAISED); + x = 0; + } + } + } + + /* + * If the insertion point should be displayed, then draw a special + * background for the cursor before drawing the text. Note: if we're the + * cursor item but the cursor is turned off, then redraw background over + * the area of the cursor. This guarantees that the selection won't make + * the cursor invisible on mono displays, where both are drawn in the same + * color. + */ + + if ((textInfoPtr->focusItemPtr == itemPtr) && (textInfoPtr->gotFocus)) { + if (Tk_CharBbox(textPtr->textLayout, textPtr->insertPos, + &x, &y, NULL, &height)) { + Tk_CanvasDrawableCoords(canvas, + (double) (textPtr->leftEdge + x + - (textInfoPtr->insertWidth / 2)), + (double) (textPtr->header.y1 + y), + &drawableX, &drawableY); + Tk_SetCaretPos(Tk_CanvasTkwin(canvas), drawableX, drawableY, + height); + if (textInfoPtr->cursorOn) { + Tk_Fill3DRectangle(Tk_CanvasTkwin(canvas), drawable, + textInfoPtr->insertBorder, + drawableX, drawableY, + textInfoPtr->insertWidth, height, + textInfoPtr->insertBorderWidth, TK_RELIEF_RAISED); + } else if (textPtr->cursorOffGC != None) { + /* + * Redraw the background over the area of the cursor, even + * though the cursor is turned off. This guarantees that the + * selection won't make the cursor invisible on mono displays, + * where both may be drawn in the same color. + */ + + XFillRectangle(display, drawable, textPtr->cursorOffGC, + drawableX, drawableY, + (unsigned) textInfoPtr->insertWidth, + (unsigned) height); + } + } + } + + /* + * If there is no selected text or the selected text foreground is the + * same as the regular text foreground, then draw one text string. If + * there is selected text and the foregrounds differ, draw the regular + * text up to the selection, draw the selection, then draw the rest of the + * regular text. Drawing the regular text and then the selected text over + * it would causes problems with anti-aliased text because the two + * anti-aliasing colors would blend together. + */ + + Tk_CanvasDrawableCoords(canvas, (double) textPtr->leftEdge, + (double) textPtr->header.y1, &drawableX, &drawableY); + + if ((selFirstChar >= 0) && (textPtr->selTextGC != textPtr->gc)) { + Tk_DrawTextLayout(display, drawable, textPtr->gc, textPtr->textLayout, + drawableX, drawableY, 0, selFirstChar); + Tk_DrawTextLayout(display, drawable, textPtr->selTextGC, + textPtr->textLayout, drawableX, drawableY, selFirstChar, + selLastChar + 1); + Tk_DrawTextLayout(display, drawable, textPtr->gc, textPtr->textLayout, + drawableX, drawableY, selLastChar + 1, -1); + } else { + Tk_DrawTextLayout(display, drawable, textPtr->gc, textPtr->textLayout, + drawableX, drawableY, 0, -1); + } + Tk_UnderlineTextLayout(display, drawable, textPtr->gc, textPtr->textLayout, + drawableX, drawableY, textPtr->underline); + + if (stipple != None) { + XSetTSOrigin(display, textPtr->gc, 0, 0); + } +} + +/* + *-------------------------------------------------------------- + * + * TextInsert -- + * + * Insert characters into a text item at a given position. + * + * Results: + * None. + * + * Side effects: + * The text in the given item is modified. The cursor and selection + * positions are also modified to reflect the insertion. + * + *-------------------------------------------------------------- + */ + +static void +TextInsert( + Tk_Canvas canvas, /* Canvas containing text item. */ + Tk_Item *itemPtr, /* Text item to be modified. */ + int index, /* Character index before which string is to + * be inserted. */ + char *string) /* New characters to be inserted. */ +{ + TextItem *textPtr = (TextItem *) itemPtr; + int byteIndex, byteCount, charsAdded; + char *newStr, *text; + Tk_CanvasTextInfo *textInfoPtr = textPtr->textInfoPtr; + + string = Tcl_GetStringFromObj((Tcl_Obj *) string, &byteCount); + + text = textPtr->text; + + if (index < 0) { + index = 0; + } + if (index > textPtr->numChars) { + index = textPtr->numChars; + } + byteIndex = Tcl_UtfAtIndex(text, index) - text; + byteCount = strlen(string); + if (byteCount == 0) { + return; + } + + newStr = (char *) ckalloc((unsigned) textPtr->numBytes + byteCount + 1); + memcpy(newStr, text, (size_t) byteIndex); + strcpy(newStr + byteIndex, string); + strcpy(newStr + byteIndex + byteCount, text + byteIndex); + + ckfree(text); + textPtr->text = newStr; + charsAdded = Tcl_NumUtfChars(string, byteCount); + textPtr->numChars += charsAdded; + textPtr->numBytes += byteCount; + + /* + * Inserting characters invalidates indices such as those for the + * selection and cursor. Update the indices appropriately. + */ + + if (textInfoPtr->selItemPtr == itemPtr) { + if (textInfoPtr->selectFirst >= index) { + textInfoPtr->selectFirst += charsAdded; + } + if (textInfoPtr->selectLast >= index) { + textInfoPtr->selectLast += charsAdded; + } + if ((textInfoPtr->anchorItemPtr == itemPtr) + && (textInfoPtr->selectAnchor >= index)) { + textInfoPtr->selectAnchor += charsAdded; + } + } + if (textPtr->insertPos >= index) { + textPtr->insertPos += charsAdded; + } + ComputeTextBbox(canvas, textPtr); +} + +/* + *-------------------------------------------------------------- + * + * TextDeleteChars -- + * + * Delete one or more characters from a text item. + * + * Results: + * None. + * + * Side effects: + * Characters between "first" and "last", inclusive, get deleted from + * itemPtr, and things like the selection position get updated. + * + *-------------------------------------------------------------- + */ + +static void +TextDeleteChars( + Tk_Canvas canvas, /* Canvas containing itemPtr. */ + Tk_Item *itemPtr, /* Item in which to delete characters. */ + int first, /* Character index of first character to + * delete. */ + int last) /* Character index of last character to delete + * (inclusive). */ +{ + TextItem *textPtr = (TextItem *) itemPtr; + int byteIndex, byteCount, charsRemoved; + char *newStr, *text; + Tk_CanvasTextInfo *textInfoPtr = textPtr->textInfoPtr; + + text = textPtr->text; + if (first < 0) { + first = 0; + } + if (last >= textPtr->numChars) { + last = textPtr->numChars - 1; + } + if (first > last) { + return; + } + charsRemoved = last + 1 - first; + + byteIndex = Tcl_UtfAtIndex(text, first) - text; + byteCount = Tcl_UtfAtIndex(text + byteIndex, charsRemoved) + - (text + byteIndex); + + newStr = (char *) ckalloc((unsigned) (textPtr->numBytes + 1 - byteCount)); + memcpy(newStr, text, (size_t) byteIndex); + strcpy(newStr + byteIndex, text + byteIndex + byteCount); + + ckfree(text); + textPtr->text = newStr; + textPtr->numChars -= charsRemoved; + textPtr->numBytes -= byteCount; + + /* + * Update indexes for the selection and cursor to reflect the renumbering + * of the remaining characters. + */ + + if (textInfoPtr->selItemPtr == itemPtr) { + if (textInfoPtr->selectFirst > first) { + textInfoPtr->selectFirst -= charsRemoved; + if (textInfoPtr->selectFirst < first) { + textInfoPtr->selectFirst = first; + } + } + if (textInfoPtr->selectLast >= first) { + textInfoPtr->selectLast -= charsRemoved; + if (textInfoPtr->selectLast < first - 1) { + textInfoPtr->selectLast = first - 1; + } + } + if (textInfoPtr->selectFirst > textInfoPtr->selectLast) { + textInfoPtr->selItemPtr = NULL; + } + if ((textInfoPtr->anchorItemPtr == itemPtr) + && (textInfoPtr->selectAnchor > first)) { + textInfoPtr->selectAnchor -= charsRemoved; + if (textInfoPtr->selectAnchor < first) { + textInfoPtr->selectAnchor = first; + } + } + } + if (textPtr->insertPos > first) { + textPtr->insertPos -= charsRemoved; + if (textPtr->insertPos < first) { + textPtr->insertPos = first; + } + } + ComputeTextBbox(canvas, textPtr); + return; +} + +/* + *-------------------------------------------------------------- + * + * TextToPoint -- + * + * Computes the distance from a given point to a given text item, in + * canvas units. + * + * Results: + * The return value is 0 if the point whose x and y coordinates are + * pointPtr[0] and pointPtr[1] is inside the text item. If the point + * isn't inside the text item then the return value is the distance from + * the point to the text item. + * + * Side effects: + * None. + * + *-------------------------------------------------------------- + */ + +static double +TextToPoint( + Tk_Canvas canvas, /* Canvas containing itemPtr. */ + Tk_Item *itemPtr, /* Item to check against point. */ + double *pointPtr) /* Pointer to x and y coordinates. */ +{ + TextItem *textPtr; + Tk_State state = itemPtr->state; + double value; + + if (state == TK_STATE_NULL) { + state = ((TkCanvas *)canvas)->canvas_state; + } + textPtr = (TextItem *) itemPtr; + value = (double) Tk_DistanceToTextLayout(textPtr->textLayout, + (int) pointPtr[0] - textPtr->leftEdge, + (int) pointPtr[1] - textPtr->header.y1); + + if ((state == TK_STATE_HIDDEN) || (textPtr->color == NULL) || + (textPtr->text == NULL) || (*textPtr->text == 0)) { + value = 1.0e36; + } + return value; +} + +/* + *-------------------------------------------------------------- + * + * TextToArea -- + * + * This function is called to determine whether an item lies entirely + * inside, entirely outside, or overlapping a given rectangle. + * + * Results: + * -1 is returned if the item is entirely outside the area given by + * rectPtr, 0 if it overlaps, and 1 if it is entirely inside the given + * area. + * + * Side effects: + * None. + * + *-------------------------------------------------------------- + */ + +static int +TextToArea( + Tk_Canvas canvas, /* Canvas containing itemPtr. */ + Tk_Item *itemPtr, /* Item to check against rectangle. */ + double *rectPtr) /* Pointer to array of four coordinates + * (x1,y1,x2,y2) describing rectangular + * area. */ +{ + TextItem *textPtr; + Tk_State state = itemPtr->state; + + if (state == TK_STATE_NULL) { + state = ((TkCanvas *)canvas)->canvas_state; + } + + textPtr = (TextItem *) itemPtr; + return Tk_IntersectTextLayout(textPtr->textLayout, + (int) (rectPtr[0] + 0.5) - textPtr->leftEdge, + (int) (rectPtr[1] + 0.5) - textPtr->header.y1, + (int) (rectPtr[2] - rectPtr[0] + 0.5), + (int) (rectPtr[3] - rectPtr[1] + 0.5)); +} + +/* + *-------------------------------------------------------------- + * + * ScaleText -- + * + * This function is invoked to rescale a text item. + * + * Results: + * None. + * + * Side effects: + * Scales the position of the text, but not the size of the font for the + * text. + * + *-------------------------------------------------------------- + */ + + /* ARGSUSED */ +static void +ScaleText( + Tk_Canvas canvas, /* Canvas containing rectangle. */ + Tk_Item *itemPtr, /* Rectangle to be scaled. */ + double originX, double originY, + /* Origin about which to scale rect. */ + double scaleX, /* Amount to scale in X direction. */ + double scaleY) /* Amount to scale in Y direction. */ +{ + TextItem *textPtr = (TextItem *) itemPtr; + + textPtr->x = originX + scaleX*(textPtr->x - originX); + textPtr->y = originY + scaleY*(textPtr->y - originY); + ComputeTextBbox(canvas, textPtr); + return; +} + +/* + *-------------------------------------------------------------- + * + * TranslateText -- + * + * This function is called to move a text item by a given amount. + * + * Results: + * None. + * + * Side effects: + * The position of the text item is offset by (xDelta, yDelta), and the + * bounding box is updated in the generic part of the item structure. + * + *-------------------------------------------------------------- + */ + +static void +TranslateText( + Tk_Canvas canvas, /* Canvas containing item. */ + Tk_Item *itemPtr, /* Item that is being moved. */ + double deltaX, double deltaY) + /* Amount by which item is to be moved. */ +{ + TextItem *textPtr = (TextItem *) itemPtr; + + textPtr->x += deltaX; + textPtr->y += deltaY; + ComputeTextBbox(canvas, textPtr); +} + +/* + *-------------------------------------------------------------- + * + * GetTextIndex -- + * + * Parse an index into a text item and return either its value or an + * error. + * + * Results: + * A standard Tcl result. If all went well, then *indexPtr is filled in + * with the index (into itemPtr) corresponding to string. Otherwise an + * error message is left in the interp's result. + * + * Side effects: + * None. + * + *-------------------------------------------------------------- + */ + +static int +GetTextIndex( + Tcl_Interp *interp, /* Used for error reporting. */ + Tk_Canvas canvas, /* Canvas containing item. */ + Tk_Item *itemPtr, /* Item for which the index is being + * specified. */ + Tcl_Obj *obj, /* Specification of a particular character in + * itemPtr's text. */ + int *indexPtr) /* Where to store converted character + * index. */ +{ + TextItem *textPtr = (TextItem *) itemPtr; + int length; + int c; + TkCanvas *canvasPtr = (TkCanvas *) canvas; + Tk_CanvasTextInfo *textInfoPtr = textPtr->textInfoPtr; + char *string = Tcl_GetStringFromObj(obj, &length); + + c = string[0]; + + if ((c == 'e') && (strncmp(string, "end", (unsigned) length) == 0)) { + *indexPtr = textPtr->numChars; + } else if ((c == 'i') + && (strncmp(string, "insert", (unsigned) length) == 0)) { + *indexPtr = textPtr->insertPos; + } else if ((c == 's') && (length >= 5) + && (strncmp(string, "sel.first", (unsigned) length) == 0)) { + if (textInfoPtr->selItemPtr != itemPtr) { + Tcl_SetResult(interp, "selection isn't in item", TCL_STATIC); + return TCL_ERROR; + } + *indexPtr = textInfoPtr->selectFirst; + } else if ((c == 's') && (length >= 5) + && (strncmp(string, "sel.last", (unsigned) length) == 0)) { + if (textInfoPtr->selItemPtr != itemPtr) { + Tcl_SetResult(interp, "selection isn't in item", TCL_STATIC); + return TCL_ERROR; + } + *indexPtr = textInfoPtr->selectLast; + } else if (c == '@') { + int x, y; + double tmp; + char *end, *p; + + p = string+1; + tmp = strtod(p, &end); + if ((end == p) || (*end != ',')) { + goto badIndex; + } + x = (int) ((tmp < 0) ? tmp - 0.5 : tmp + 0.5); + p = end+1; + tmp = strtod(p, &end); + if ((end == p) || (*end != 0)) { + goto badIndex; + } + y = (int) ((tmp < 0) ? tmp - 0.5 : tmp + 0.5); + *indexPtr = Tk_PointToChar(textPtr->textLayout, + x + canvasPtr->scrollX1 - textPtr->leftEdge, + y + canvasPtr->scrollY1 - textPtr->header.y1); + } else if (Tcl_GetIntFromObj(NULL, obj, indexPtr) == TCL_OK) { + if (*indexPtr < 0){ + *indexPtr = 0; + } else if (*indexPtr > textPtr->numChars) { + *indexPtr = textPtr->numChars; + } + } else { + /* + * Some of the paths here leave messages in the interp's result, so we + * have to clear it out before storing our own message. + */ + + badIndex: + Tcl_SetResult(interp, NULL, TCL_STATIC); + Tcl_AppendResult(interp, "bad index \"", string, "\"", NULL); + return TCL_ERROR; + } + return TCL_OK; +} + +/* + *-------------------------------------------------------------- + * + * SetTextCursor -- + * + * Set the position of the insertion cursor in this item. + * + * Results: + * None. + * + * Side effects: + * The cursor position will change. + * + *-------------------------------------------------------------- + */ + + /* ARGSUSED */ +static void +SetTextCursor( + Tk_Canvas canvas, /* Record describing canvas widget. */ + Tk_Item *itemPtr, /* Text item in which cursor position is to be + * set. */ + int index) /* Character index of character just before + * which cursor is to be positioned. */ +{ + TextItem *textPtr = (TextItem *) itemPtr; + + if (index < 0) { + textPtr->insertPos = 0; + } else if (index > textPtr->numChars) { + textPtr->insertPos = textPtr->numChars; + } else { + textPtr->insertPos = index; + } +} + +/* + *-------------------------------------------------------------- + * + * GetSelText -- + * + * This function is invoked to return the selected portion of a text + * item. It is only called when this item has the selection. + * + * Results: + * The return value is the number of non-NULL bytes stored at buffer. + * Buffer is filled (or partially filled) with a NULL-terminated string + * containing part or all of the selection, as given by offset and + * maxBytes. + * + * Side effects: + * None. + * + *-------------------------------------------------------------- + */ + +static int +GetSelText( + Tk_Canvas canvas, /* Canvas containing selection. */ + Tk_Item *itemPtr, /* Text item containing selection. */ + int offset, /* Byte offset within selection of first + * character to be returned. */ + char *buffer, /* Location in which to place selection. */ + int maxBytes) /* Maximum number of bytes to place at buffer, + * not including terminating NULL + * character. */ +{ + TextItem *textPtr = (TextItem *) itemPtr; + int byteCount; + char *text; + CONST char *selStart, *selEnd; + Tk_CanvasTextInfo *textInfoPtr = textPtr->textInfoPtr; + + if ((textInfoPtr->selectFirst < 0) || + (textInfoPtr->selectFirst > textInfoPtr->selectLast)) { + return 0; + } + text = textPtr->text; + selStart = Tcl_UtfAtIndex(text, textInfoPtr->selectFirst); + selEnd = Tcl_UtfAtIndex(selStart, + textInfoPtr->selectLast + 1 - textInfoPtr->selectFirst); + byteCount = selEnd - selStart - offset; + if (byteCount > maxBytes) { + byteCount = maxBytes; + } + if (byteCount <= 0) { + return 0; + } + memcpy(buffer, selStart + offset, (size_t) byteCount); + buffer[byteCount] = '\0'; + return byteCount; +} + +/* + *-------------------------------------------------------------- + * + * TextToPostscript -- + * + * This function is called to generate Postscript for text items. + * + * Results: + * The return value is a standard Tcl result. If an error occurs in + * generating Postscript then an error message is left in the interp's + * result, replacing whatever used to be there. If no error occurs, then + * Postscript for the item is appended to the result. + * + * Side effects: + * None. + * + *-------------------------------------------------------------- + */ + +static int +TextToPostscript( + Tcl_Interp *interp, /* Leave Postscript or error message here. */ + Tk_Canvas canvas, /* Information about overall canvas. */ + Tk_Item *itemPtr, /* Item for which Postscript is wanted. */ + int prepass) /* 1 means this is a prepass to collect font + * information; 0 means final Postscript is + * being created. */ +{ + TextItem *textPtr = (TextItem *) itemPtr; + int x, y; + Tk_FontMetrics fm; + char *justify; + char buffer[500]; + XColor *color; + Pixmap stipple; + Tk_State state = itemPtr->state; + + if (state == TK_STATE_NULL) { + state = ((TkCanvas *)canvas)->canvas_state; + } + color = textPtr->color; + stipple = textPtr->stipple; + if (state == TK_STATE_HIDDEN || textPtr->color == NULL || + textPtr->text == NULL || *textPtr->text == 0) { + return TCL_OK; + } else if (((TkCanvas *)canvas)->currentItemPtr == itemPtr) { + if (textPtr->activeColor!=NULL) { + color = textPtr->activeColor; + } + if (textPtr->activeStipple!=None) { + stipple = textPtr->activeStipple; + } + } else if (state==TK_STATE_DISABLED) { + if (textPtr->disabledColor!=NULL) { + color = textPtr->disabledColor; + } + if (textPtr->disabledStipple!=None) { + stipple = textPtr->disabledStipple; + } + } + + if (Tk_CanvasPsFont(interp, canvas, textPtr->tkfont) != TCL_OK) { + return TCL_ERROR; + } + if (prepass != 0) { + return TCL_OK; + } + if (Tk_CanvasPsColor(interp, canvas, color) != TCL_OK) { + return TCL_ERROR; + } + if (stipple != None) { + Tcl_AppendResult(interp, "/StippleText {\n ", NULL); + Tk_CanvasPsStipple(interp, canvas, stipple); + Tcl_AppendResult(interp, "} bind def\n", NULL); + } + + sprintf(buffer, "%.15g %.15g [\n", textPtr->x, + Tk_CanvasPsY(canvas, textPtr->y)); + Tcl_AppendResult(interp, buffer, NULL); + + Tk_TextLayoutToPostscript(interp, textPtr->textLayout); + + x = 0; y = 0; justify = NULL; /* lint. */ + switch (textPtr->anchor) { + case TK_ANCHOR_NW: x = 0; y = 0; break; + case TK_ANCHOR_N: x = 1; y = 0; break; + case TK_ANCHOR_NE: x = 2; y = 0; break; + case TK_ANCHOR_E: x = 2; y = 1; break; + case TK_ANCHOR_SE: x = 2; y = 2; break; + case TK_ANCHOR_S: x = 1; y = 2; break; + case TK_ANCHOR_SW: x = 0; y = 2; break; + case TK_ANCHOR_W: x = 0; y = 1; break; + case TK_ANCHOR_CENTER: x = 1; y = 1; break; + } + switch (textPtr->justify) { + case TK_JUSTIFY_LEFT: justify = "0"; break; + case TK_JUSTIFY_CENTER: justify = "0.5"; break; + case TK_JUSTIFY_RIGHT: justify = "1"; break; + } + + Tk_GetFontMetrics(textPtr->tkfont, &fm); + sprintf(buffer, "] %d %g %g %s %s DrawText\n", + fm.linespace, x / -2.0, y / 2.0, justify, + ((stipple == None) ? "false" : "true")); + Tcl_AppendResult(interp, buffer, NULL); + + return TCL_OK; +} + +/* + * Local Variables: + * mode: c + * c-basic-offset: 4 + * fill-column: 78 + * End: + */ -- cgit v0.12