/*
* 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 1.15 2003/02/09 07:48:22 hobbs Exp $
*/
#include "tkPort.h"
#include "tkInt.h"
#include "tkCanvases.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. */
/*
* 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. */
Tk_Tile tile;
} TextItem;
/*
* Information used for parsing configuration specs:
*/
static Tk_CustomOption stateOption = {
TkStateParseProc,
TkStatePrintProc, (ClientData) 2
};
static Tk_CustomOption tagsOption = {
Tk_CanvasTagsParseProc,
Tk_CanvasTagsPrintProc, (ClientData) NULL
};
static Tk_CustomOption tileOption = {
Tk_TileParseProc,
Tk_TilePrintProc, (ClientData) NULL
};
static Tk_CustomOption offsetOption = {
Tk_OffsetParseProc,
Tk_OffsetPrintProc, (ClientData) (TK_OFFSET_RELATIVE)
};
static Tk_ConfigSpec configSpecs[] = {
{TK_CONFIG_COLOR, "-activefill", (char *) NULL, (char *) NULL,
(char *) NULL, Tk_Offset(TextItem, activeColor), TK_CONFIG_NULL_OK},
{TK_CONFIG_BITMAP, "-activestipple", (char *) NULL, (char *) NULL,
(char *) NULL, Tk_Offset(TextItem, activeStipple), TK_CONFIG_NULL_OK},
{TK_CONFIG_ANCHOR, "-anchor", (char *) NULL, (char *) NULL,
"center", Tk_Offset(TextItem, anchor),
TK_CONFIG_DONT_SET_DEFAULT},
{TK_CONFIG_COLOR, "-disabledfill", (char *) NULL, (char *) NULL,
(char *) NULL, Tk_Offset(TextItem, disabledColor), TK_CONFIG_NULL_OK},
{TK_CONFIG_BITMAP, "-disabledstipple", (char *) NULL, (char *) NULL,
(char *) NULL, Tk_Offset(TextItem, disabledStipple), TK_CONFIG_NULL_OK},
{TK_CONFIG_COLOR, "-fill", (char *) NULL, (char *) NULL,
"black", Tk_Offset(TextItem, color), TK_CONFIG_NULL_OK},
{TK_CONFIG_FONT, "-font", (char *) NULL, (char *) NULL,
DEF_CANVTEXT_FONT, Tk_Offset(TextItem, tkfont), 0},
{TK_CONFIG_JUSTIFY, "-justify", (char *) NULL, (char *) NULL,
"left", Tk_Offset(TextItem, justify),
TK_CONFIG_DONT_SET_DEFAULT},
{TK_CONFIG_CUSTOM, "-offset", (char *) NULL, (char *) NULL,
"0 0", Tk_Offset(TextItem, tsoffset),
TK_CONFIG_DONT_SET_DEFAULT, &offsetOption},
{TK_CONFIG_CUSTOM, "-state", (char *) NULL, (char *) NULL,
(char *) NULL, Tk_Offset(Tk_Item, state), TK_CONFIG_NULL_OK,
&stateOption},
{TK_CONFIG_BITMAP, "-stipple", (char *) NULL, (char *) NULL,
(char *) NULL, Tk_Offset(TextItem, stipple), TK_CONFIG_NULL_OK},
{TK_CONFIG_CUSTOM, "-tags", (char *) NULL, (char *) NULL,
(char *) NULL, 0, TK_CONFIG_NULL_OK, &tagsOption},
{TK_CONFIG_STRING, "-text", (char *) NULL, (char *) NULL,
"", Tk_Offset(TextItem, text), 0},
{TK_CONFIG_CALLBACK, "-updatecommand", (char *) NULL, (char *) NULL,
(char *) NULL, Tk_Offset(Tk_Item, updateCmd), TK_CONFIG_NULL_OK},
{TK_CONFIG_PIXELS, "-width", (char *) NULL, (char *) NULL,
"0", Tk_Offset(TextItem, width), TK_CONFIG_DONT_SET_DEFAULT},
{TK_CONFIG_END, (char *) NULL, (char *) NULL, (char *) NULL,
(char *) NULL, 0, 0}
};
/*
* Prototypes for procedures defined in this file:
*/
static void ComputeTextBbox _ANSI_ARGS_((Tk_Canvas canvas,
TextItem *textPtr));
static int ConfigureText _ANSI_ARGS_((Tcl_Interp *interp,
Tk_Canvas canvas, Tk_Item *itemPtr, int argc,
Tcl_Obj *CONST objv[], int flags));
static int CreateText _ANSI_ARGS_((Tcl_Interp *interp,
Tk_Canvas canvas, struct Tk_Item *itemPtr,
int argc, Tcl_Obj *CONST objv[]));
static void DeleteText _ANSI_ARGS_((Tk_Canvas canvas,
Tk_Item *itemPtr, Display *display));
static void DisplayCanvText _ANSI_ARGS_((Tk_Canvas canvas,
Tk_Item *itemPtr, Display *display, Drawable dst,
int x, int y, int width, int height));
static int GetSelText _ANSI_ARGS_((Tk_Canvas canvas,
Tk_Item *itemPtr, int offset, char *buffer,
int maxBytes));
static int GetTextIndex _ANSI_ARGS_((Tcl_Interp *interp,
Tk_Canvas canvas, Tk_Item *itemPtr,
Tcl_Obj *obj, int *indexPtr));
static void ScaleText _ANSI_ARGS_((Tk_Canvas canvas,
Tk_Item *itemPtr, double originX, double originY,
double scaleX, double scaleY));
static void SetTextCursor _ANSI_ARGS_((Tk_Canvas canvas,
Tk_Item *itemPtr, int index));
static int TextCoords _ANSI_ARGS_((Tcl_Interp *interp,
Tk_Canvas canvas, Tk_Item *itemPtr,
int argc, Tcl_Obj *CONST objv[]));
static void TextDeleteChars _ANSI_ARGS_((Tk_Canvas canvas,
Tk_Item *itemPtr, int first, int last));
static void TextInsert _ANSI_ARGS_((Tk_Canvas canvas,
Tk_Item *itemPtr, int beforeThis, Tcl_Obj *string));
static int TextToArea _ANSI_ARGS_((Tk_Canvas canvas,
Tk_Item *itemPtr, double *rectPtr));
static double TextToPoint _ANSI_ARGS_((Tk_Canvas canvas,
Tk_Item *itemPtr, double *pointPtr));
static int TextToPostscript _ANSI_ARGS_((Tcl_Interp *interp,
Tk_Canvas canvas, Tk_Item *itemPtr, int prepass));
static void TranslateText _ANSI_ARGS_((Tk_Canvas canvas,
Tk_Item *itemPtr, double deltaX, double deltaY));
/*
* The structures below defines the rectangle and oval item types
* by means of procedures 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_ITEM_VISITOR_SUPPORT|TK_CONFIG_OBJS,/* flags */
TextToPoint, /* pointProc */
TextToArea, /* areaProc */
TextToPostscript, /* postscriptProc */
ScaleText, /* scaleProc */
TranslateText, /* translateProc */
GetTextIndex, /* indexProc */
SetTextCursor, /* icursorProc */
GetSelText, /* selectionProc */
TextInsert, /* insertProc */
TextDeleteChars, /* dTextProc */
(Tk_ItemType *) NULL, /* nextPtr */
(Tk_ItemBboxProc *) ComputeTextBbox,/* bboxProc */
Tk_Offset(Tk_VisitorType, visitText), /* acceptProc */
NULL, /* getCoordProc */
NULL /* setCoordProc */
};
/*
*--------------------------------------------------------------
*
* CreateText --
*
* This procedure 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(interp, canvas, itemPtr, objc, objv)
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) {
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 procedure.
*/
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->numChars = 0;
textPtr->numBytes = 0;
textPtr->textLayout = NULL;
textPtr->leftEdge = 0;
textPtr->rightEdge = 0;
textPtr->gc = None;
textPtr->selTextGC = None;
textPtr->cursorOffGC = None;
textPtr->tile = NULL;
/*
* 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 procedure 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(interp, canvas, itemPtr, objc, objv)
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 procedure 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(interp, canvas, itemPtr, objc, objv, flags)
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;
Tk_Tile tile;
tkwin = Tk_CanvasTkwin(canvas);
if (TCL_OK != Tk_ConfigureWidget(interp, tkwin, configSpecs, objc,
(CONST84 Tcl_Obj *CONST*) objv, (char *) textPtr, flags|TK_CONFIG_OBJS)) {
return TCL_ERROR;
}
/*
* A few of the options require additional processing, such as
* graphics contexts.
*/
state = Tk_GetItemState(canvas, itemPtr);
if (textPtr->activeColor != NULL ||
textPtr->activeStipple != None) {
itemPtr->redraw_flags |= TK_ITEM_STATE_DEPENDANT;
} else {
itemPtr->redraw_flags &= ~TK_ITEM_STATE_DEPENDANT;
}
tile = textPtr->tile;
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 procedure 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(canvas, itemPtr, display)
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 procedure 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(canvas, textPtr)
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 = Tk_GetItemState(canvas, &textPtr->header);
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 procedure 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(canvas, itemPtr, display, drawable, x, y, width, height)
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, y, width, 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_Tile tile;
Tk_State state = Tk_GetItemState(canvas, itemPtr);
textPtr = (TextItem *) itemPtr;
textInfoPtr = textPtr->textInfoPtr;
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);
}
}
}
/*
* Display the text in two pieces: draw the entire text item, then
* draw the selected text on top of it. The selected text then
* will only need to be drawn if it has different attributes (such
* as foreground color) than regular text.
*/
Tk_CanvasDrawableCoords(canvas, (double) textPtr->leftEdge,
(double) textPtr->header.y1, &drawableX, &drawableY);
Tk_DrawTextLayout(display, drawable, textPtr->gc, textPtr->textLayout,
drawableX, drawableY, 0, -1);
if ((selFirstChar >= 0) && (textPtr->selTextGC != textPtr->gc)) {
Tk_DrawTextLayout(display, drawable, textPtr->selTextGC,
textPtr->textLayout, drawableX, drawableY, selFirstChar,
selLastChar + 1);
}
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(canvas, itemPtr, index, ostring)
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. */
Tcl_Obj *ostring; /* New characters to be inserted. */
{
TextItem *textPtr = (TextItem *) itemPtr;
int byteIndex, byteCount, charsAdded;
char *new, *text;
Tk_CanvasTextInfo *textInfoPtr = textPtr->textInfoPtr;
char * string = Tcl_GetString(ostring);
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;
}
new = (char *) ckalloc((unsigned) textPtr->numBytes + byteCount + 1);
memcpy(new, text, (size_t) byteIndex);
strcpy(new + byteIndex, string);
strcpy(new + byteIndex + byteCount, text + byteIndex);
ckfree(text);
textPtr->text = new;
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(canvas, itemPtr, first, last)
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 *new, *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);
new = (char *) ckalloc((unsigned) (textPtr->numBytes + 1 - byteCount));
memcpy(new, text, (size_t) byteIndex);
strcpy(new + byteIndex, text + byteIndex + byteCount);
ckfree(text);
textPtr->text = new;
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(canvas, itemPtr, pointPtr)
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 = Tk_GetItemState(canvas, itemPtr);
double value;
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 procedure 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(canvas, itemPtr, rectPtr)
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 = Tk_GetItemState(canvas, itemPtr);
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 procedure 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(canvas, itemPtr, originX, originY, scaleX, scaleY)
Tk_Canvas canvas; /* Canvas containing rectangle. */
Tk_Item *itemPtr; /* Rectangle to be scaled. */
double originX, 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 procedure 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(canvas, itemPtr, deltaX, deltaY)
Tk_Canvas canvas; /* Canvas containing item. */
Tk_Item *itemPtr; /* Item that is being moved. */
double deltaX, 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(interp, canvas, itemPtr, obj, indexPtr)
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;
size_t length;
int c;
TkCanvas *canvasPtr = (TkCanvas *) canvas;
Tk_CanvasTextInfo *textInfoPtr = textPtr->textInfoPtr;
char *string;
int x, y;
double dx,dy;
char *end, *p;
Tcl_Obj **objv;
if (Tcl_ListObjGetElements(interp, obj, &c, &objv) == TCL_OK && c == 2
&& Tcl_GetDoubleFromObj(interp, objv[0], &dx) == TCL_OK
&& Tcl_GetDoubleFromObj(interp, objv[1], &dy) == TCL_OK) {
goto doxy;
}
string = Tcl_GetStringFromObj(obj, &length);
c = string[0];
length = strlen(string);
if ((c == 'e') && (strncmp(string, "end", length) == 0)) {
*indexPtr = textPtr->numChars;
} else if ((c == 'i') && (strncmp(string, "insert", length) == 0)) {
*indexPtr = textPtr->insertPos;
} else if ((c == 's') && (strncmp(string, "sel.first", length) == 0)
&& (length >= 5)) {
if (textInfoPtr->selItemPtr != itemPtr) {
Tcl_SetResult(interp, "selection isn't in item", TCL_STATIC);
return TCL_ERROR;
}
*indexPtr = textInfoPtr->selectFirst;
} else if ((c == 's') && (strncmp(string, "sel.last", length) == 0)
&& (length >= 5)) {
if (textInfoPtr->selItemPtr != itemPtr) {
Tcl_SetResult(interp, "selection isn't in item", TCL_STATIC);
return TCL_ERROR;
}
*indexPtr = textInfoPtr->selectLast;
} else if (c == '@') {
p = string+1;
dx = strtod(p, &end);
if ((end == p) || (*end != ',')) {
goto badIndex;
}
p = end+1;
dy = strtod(p, &end);
if ((end == p) || (*end != 0)) {
goto badIndex;
}
doxy:
x = (int) ((dx < 0) ? dx - 0.5 : dx + 0.5);
y = (int) ((dy < 0) ? dy - 0.5 : dy + 0.5);
*indexPtr = Tk_PointToChar(textPtr->textLayout,
x + canvasPtr->scrollX1 - textPtr->leftEdge,
y + canvasPtr->scrollY1 - textPtr->header.y1);
} else if (Tcl_GetIntFromObj((Tcl_Interp *)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, (char *) NULL, TCL_STATIC);
Tcl_AppendResult(interp, "bad index \"", string, "\"",
(char *) 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(canvas, itemPtr, index)
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 procedure 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(canvas, itemPtr, offset, buffer, maxBytes)
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 procedure 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(interp, canvas, itemPtr, prepass)
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 = Tk_GetItemState(canvas, itemPtr);
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 ",
(char *) NULL);
Tk_CanvasPsStipple(interp, canvas, stipple);
Tcl_AppendResult(interp, "} bind def\n", (char *) NULL);
}
sprintf(buffer, "%.15g %.15g [\n", textPtr->x,
Tk_CanvasPsY(canvas, textPtr->y));
Tcl_AppendResult(interp, buffer, (char *) 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, (char *) NULL);
return TCL_OK;
}