1314 lines
38 KiB
C
1314 lines
38 KiB
C
/*
|
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* tkCanvText.c --
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*
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* This file implements text items for canvas widgets.
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*
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* Copyright (c) 1991-1994 The Regents of the University of California.
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* Copyright (c) 1994-1995 Sun Microsystems, Inc.
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*
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* See the file "license.terms" for information on usage and redistribution
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* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
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*
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* SCCS: @(#) tkCanvText.c 1.68 97/10/09 17:44:53
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*/
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#include <stdio.h>
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#include "tkInt.h"
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#include "tkCanvas.h"
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#include "tkPort.h"
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#include "default.h"
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/*
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* The structure below defines the record for each text item.
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*/
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typedef struct TextItem {
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Tk_Item header; /* Generic stuff that's the same for all
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* types. MUST BE FIRST IN STRUCTURE. */
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Tk_CanvasTextInfo *textInfoPtr;
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/* Pointer to a structure containing
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* information about the selection and
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* insertion cursor. The structure is owned
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* by (and shared with) the generic canvas
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* code. */
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/*
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* Fields that are set by widget commands other than "configure".
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*/
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double x, y; /* Positioning point for text. */
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int insertPos; /* Insertion cursor is displayed just to left
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* of character with this index. */
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/*
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* Configuration settings that are updated by Tk_ConfigureWidget.
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*/
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Tk_Anchor anchor; /* Where to anchor text relative to (x,y). */
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XColor *color; /* Color for text. */
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Tk_Font tkfont; /* Font for drawing text. */
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Tk_Justify justify; /* Justification mode for text. */
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Pixmap stipple; /* Stipple bitmap for text, or None. */
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char *text; /* Text for item (malloc-ed). */
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int width; /* Width of lines for word-wrap, pixels.
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* Zero means no word-wrap. */
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/*
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* Fields whose values are derived from the current values of the
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* configuration settings above.
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*/
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int numChars; /* Number of non-NULL characters in text. */
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Tk_TextLayout textLayout; /* Cached text layout information. */
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int leftEdge; /* Pixel location of the left edge of the
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* text item; where the left border of the
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* text layout is drawn. */
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int rightEdge; /* Pixel just to right of right edge of
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* area of text item. Used for selecting up
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* to end of line. */
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GC gc; /* Graphics context for drawing text. */
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GC selTextGC; /* Graphics context for selected text. */
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GC cursorOffGC; /* If not None, this gives a graphics context
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* to use to draw the insertion cursor when
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* it's off. Used if the selection and
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* insertion cursor colors are the same. */
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} TextItem;
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/*
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* Information used for parsing configuration specs:
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*/
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static Tk_CustomOption tagsOption = {Tk_CanvasTagsParseProc,
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Tk_CanvasTagsPrintProc, (ClientData) NULL
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};
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static Tk_ConfigSpec configSpecs[] = {
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{TK_CONFIG_ANCHOR, "-anchor", (char *) NULL, (char *) NULL,
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"center", Tk_Offset(TextItem, anchor),
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TK_CONFIG_DONT_SET_DEFAULT},
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{TK_CONFIG_COLOR, "-fill", (char *) NULL, (char *) NULL,
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"black", Tk_Offset(TextItem, color), 0},
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{TK_CONFIG_FONT, "-font", (char *) NULL, (char *) NULL,
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DEF_CANVTEXT_FONT, Tk_Offset(TextItem, tkfont), 0},
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{TK_CONFIG_JUSTIFY, "-justify", (char *) NULL, (char *) NULL,
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"left", Tk_Offset(TextItem, justify),
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TK_CONFIG_DONT_SET_DEFAULT},
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{TK_CONFIG_BITMAP, "-stipple", (char *) NULL, (char *) NULL,
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(char *) NULL, Tk_Offset(TextItem, stipple), TK_CONFIG_NULL_OK},
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{TK_CONFIG_CUSTOM, "-tags", (char *) NULL, (char *) NULL,
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(char *) NULL, 0, TK_CONFIG_NULL_OK, &tagsOption},
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{TK_CONFIG_STRING, "-text", (char *) NULL, (char *) NULL,
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"", Tk_Offset(TextItem, text), 0},
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{TK_CONFIG_PIXELS, "-width", (char *) NULL, (char *) NULL,
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"0", Tk_Offset(TextItem, width), TK_CONFIG_DONT_SET_DEFAULT},
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{TK_CONFIG_END, (char *) NULL, (char *) NULL, (char *) NULL,
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(char *) NULL, 0, 0}
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};
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/*
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* Prototypes for procedures defined in this file:
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*/
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static void ComputeTextBbox _ANSI_ARGS_((Tk_Canvas canvas,
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TextItem *textPtr));
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static int ConfigureText _ANSI_ARGS_((Tcl_Interp *interp,
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Tk_Canvas canvas, Tk_Item *itemPtr, int argc,
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char **argv, int flags));
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static int CreateText _ANSI_ARGS_((Tcl_Interp *interp,
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Tk_Canvas canvas, struct Tk_Item *itemPtr,
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int argc, char **argv));
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static void DeleteText _ANSI_ARGS_((Tk_Canvas canvas,
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Tk_Item *itemPtr, Display *display));
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static void DisplayCanvText _ANSI_ARGS_((Tk_Canvas canvas,
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Tk_Item *itemPtr, Display *display, Drawable dst,
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int x, int y, int width, int height));
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static int GetSelText _ANSI_ARGS_((Tk_Canvas canvas,
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Tk_Item *itemPtr, int offset, char *buffer,
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int maxBytes));
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static int GetTextIndex _ANSI_ARGS_((Tcl_Interp *interp,
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Tk_Canvas canvas, Tk_Item *itemPtr,
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char *indexString, int *indexPtr));
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static void ScaleText _ANSI_ARGS_((Tk_Canvas canvas,
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Tk_Item *itemPtr, double originX, double originY,
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double scaleX, double scaleY));
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static void SetTextCursor _ANSI_ARGS_((Tk_Canvas canvas,
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Tk_Item *itemPtr, int index));
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static int TextCoords _ANSI_ARGS_((Tcl_Interp *interp,
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Tk_Canvas canvas, Tk_Item *itemPtr,
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int argc, char **argv));
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static void TextDeleteChars _ANSI_ARGS_((Tk_Canvas canvas,
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Tk_Item *itemPtr, int first, int last));
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static void TextInsert _ANSI_ARGS_((Tk_Canvas canvas,
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Tk_Item *itemPtr, int beforeThis, char *string));
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static int TextToArea _ANSI_ARGS_((Tk_Canvas canvas,
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Tk_Item *itemPtr, double *rectPtr));
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static double TextToPoint _ANSI_ARGS_((Tk_Canvas canvas,
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Tk_Item *itemPtr, double *pointPtr));
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static int TextToPostscript _ANSI_ARGS_((Tcl_Interp *interp,
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Tk_Canvas canvas, Tk_Item *itemPtr, int prepass));
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static void TranslateText _ANSI_ARGS_((Tk_Canvas canvas,
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Tk_Item *itemPtr, double deltaX, double deltaY));
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/*
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* The structures below defines the rectangle and oval item types
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* by means of procedures that can be invoked by generic item code.
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*/
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Tk_ItemType tkTextType = {
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"text", /* name */
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sizeof(TextItem), /* itemSize */
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CreateText, /* createProc */
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configSpecs, /* configSpecs */
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ConfigureText, /* configureProc */
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TextCoords, /* coordProc */
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DeleteText, /* deleteProc */
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DisplayCanvText, /* displayProc */
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0, /* alwaysRedraw */
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TextToPoint, /* pointProc */
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TextToArea, /* areaProc */
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TextToPostscript, /* postscriptProc */
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ScaleText, /* scaleProc */
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TranslateText, /* translateProc */
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GetTextIndex, /* indexProc */
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SetTextCursor, /* icursorProc */
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GetSelText, /* selectionProc */
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TextInsert, /* insertProc */
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TextDeleteChars, /* dTextProc */
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(Tk_ItemType *) NULL /* nextPtr */
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};
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/*
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*--------------------------------------------------------------
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*
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* CreateText --
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*
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* This procedure is invoked to create a new text item
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* in a canvas.
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*
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* Results:
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* A standard Tcl return value. If an error occurred in
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* creating the item then an error message is left in
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* interp->result; in this case itemPtr is left uninitialized
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* so it can be safely freed by the caller.
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*
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* Side effects:
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* A new text item is created.
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*
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*--------------------------------------------------------------
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*/
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static int
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CreateText(interp, canvas, itemPtr, argc, argv)
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Tcl_Interp *interp; /* Interpreter for error reporting. */
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Tk_Canvas canvas; /* Canvas to hold new item. */
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Tk_Item *itemPtr; /* Record to hold new item; header
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* has been initialized by caller. */
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int argc; /* Number of arguments in argv. */
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char **argv; /* Arguments describing rectangle. */
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{
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TextItem *textPtr = (TextItem *) itemPtr;
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if (argc < 2) {
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Tcl_AppendResult(interp, "wrong # args: should be \"",
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Tk_PathName(Tk_CanvasTkwin(canvas)), " create ",
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itemPtr->typePtr->name, " x y ?options?\"", (char *) NULL);
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return TCL_ERROR;
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}
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/*
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* Carry out initialization that is needed in order to clean
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* up after errors during the the remainder of this procedure.
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*/
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textPtr->textInfoPtr = Tk_CanvasGetTextInfo(canvas);
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textPtr->insertPos = 0;
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textPtr->anchor = TK_ANCHOR_CENTER;
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textPtr->color = NULL;
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textPtr->tkfont = NULL;
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textPtr->justify = TK_JUSTIFY_LEFT;
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textPtr->stipple = None;
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textPtr->text = NULL;
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textPtr->width = 0;
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textPtr->numChars = 0;
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textPtr->textLayout = NULL;
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textPtr->leftEdge = 0;
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textPtr->rightEdge = 0;
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textPtr->gc = None;
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textPtr->selTextGC = None;
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textPtr->cursorOffGC = None;
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/*
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* Process the arguments to fill in the item record.
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*/
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if ((Tk_CanvasGetCoord(interp, canvas, argv[0], &textPtr->x) != TCL_OK)
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|| (Tk_CanvasGetCoord(interp, canvas, argv[1], &textPtr->y)
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!= TCL_OK)) {
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return TCL_ERROR;
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}
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if (ConfigureText(interp, canvas, itemPtr, argc-2, argv+2, 0) != TCL_OK) {
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DeleteText(canvas, itemPtr, Tk_Display(Tk_CanvasTkwin(canvas)));
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return TCL_ERROR;
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}
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return TCL_OK;
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}
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/*
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*--------------------------------------------------------------
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*
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* TextCoords --
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*
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* This procedure is invoked to process the "coords" widget
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* command on text items. See the user documentation for
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* details on what it does.
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*
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* Results:
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* Returns TCL_OK or TCL_ERROR, and sets interp->result.
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*
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* Side effects:
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* The coordinates for the given item may be changed.
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*
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*--------------------------------------------------------------
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*/
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static int
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TextCoords(interp, canvas, itemPtr, argc, argv)
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Tcl_Interp *interp; /* Used for error reporting. */
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Tk_Canvas canvas; /* Canvas containing item. */
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Tk_Item *itemPtr; /* Item whose coordinates are to be
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* read or modified. */
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int argc; /* Number of coordinates supplied in
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* argv. */
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char **argv; /* Array of coordinates: x1, y1,
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* x2, y2, ... */
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{
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TextItem *textPtr = (TextItem *) itemPtr;
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char x[TCL_DOUBLE_SPACE], y[TCL_DOUBLE_SPACE];
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if (argc == 0) {
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Tcl_PrintDouble(interp, textPtr->x, x);
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Tcl_PrintDouble(interp, textPtr->y, y);
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Tcl_AppendResult(interp, x, " ", y, (char *) NULL);
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} else if (argc == 2) {
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if ((Tk_CanvasGetCoord(interp, canvas, argv[0], &textPtr->x) != TCL_OK)
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|| (Tk_CanvasGetCoord(interp, canvas, argv[1],
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&textPtr->y) != TCL_OK)) {
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return TCL_ERROR;
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}
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ComputeTextBbox(canvas, textPtr);
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} else {
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sprintf(interp->result,
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"wrong # coordinates: expected 0 or 2, got %d", argc);
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return TCL_ERROR;
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}
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return TCL_OK;
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}
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/*
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*--------------------------------------------------------------
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*
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* ConfigureText --
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*
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* This procedure is invoked to configure various aspects
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* of a text item, such as its border and background colors.
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*
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* Results:
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* A standard Tcl result code. If an error occurs, then
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* an error message is left in interp->result.
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*
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* Side effects:
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* Configuration information, such as colors and stipple
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* patterns, may be set for itemPtr.
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*
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*--------------------------------------------------------------
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*/
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static int
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ConfigureText(interp, canvas, itemPtr, argc, argv, flags)
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Tcl_Interp *interp; /* Interpreter for error reporting. */
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Tk_Canvas canvas; /* Canvas containing itemPtr. */
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Tk_Item *itemPtr; /* Rectangle item to reconfigure. */
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int argc; /* Number of elements in argv. */
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char **argv; /* Arguments describing things to configure. */
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int flags; /* Flags to pass to Tk_ConfigureWidget. */
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{
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TextItem *textPtr = (TextItem *) itemPtr;
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XGCValues gcValues;
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GC newGC, newSelGC;
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unsigned long mask;
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Tk_Window tkwin;
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Tk_CanvasTextInfo *textInfoPtr = textPtr->textInfoPtr;
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XColor *selBgColorPtr;
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tkwin = Tk_CanvasTkwin(canvas);
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if (Tk_ConfigureWidget(interp, tkwin, configSpecs, argc, argv,
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(char *) textPtr, flags) != TCL_OK) {
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return TCL_ERROR;
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}
|
||
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/*
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* A few of the options require additional processing, such as
|
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* graphics contexts.
|
||
*/
|
||
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newGC = newSelGC = None;
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if ((textPtr->color != NULL) && (textPtr->tkfont != NULL)) {
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gcValues.foreground = textPtr->color->pixel;
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gcValues.font = Tk_FontId(textPtr->tkfont);
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mask = GCForeground|GCFont;
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if (textPtr->stipple != None) {
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gcValues.stipple = textPtr->stipple;
|
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gcValues.fill_style = FillStippled;
|
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mask |= GCForeground|GCStipple|GCFillStyle;
|
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}
|
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newGC = Tk_GetGC(tkwin, mask, &gcValues);
|
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gcValues.foreground = textInfoPtr->selFgColorPtr->pixel;
|
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newSelGC = Tk_GetGC(tkwin, mask, &gcValues);
|
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}
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if (textPtr->gc != None) {
|
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Tk_FreeGC(Tk_Display(tkwin), textPtr->gc);
|
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}
|
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textPtr->gc = newGC;
|
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if (textPtr->selTextGC != None) {
|
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Tk_FreeGC(Tk_Display(tkwin), textPtr->selTextGC);
|
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}
|
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textPtr->selTextGC = newSelGC;
|
||
|
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selBgColorPtr = Tk_3DBorderColor(textInfoPtr->selBorder);
|
||
if (Tk_3DBorderColor(textInfoPtr->insertBorder)->pixel
|
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== 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->numChars = strlen(textPtr->text);
|
||
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);
|
||
}
|
||
Tk_FreeFont(textPtr->tkfont);
|
||
if (textPtr->stipple != None) {
|
||
Tk_FreeBitmap(display, textPtr->stipple);
|
||
}
|
||
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 bbos is to be
|
||
* recomputed. */
|
||
{
|
||
Tk_CanvasTextInfo *textInfoPtr;
|
||
int leftX, topY, width, height, fudge;
|
||
|
||
Tk_FreeTextLayout(textPtr->textLayout);
|
||
textPtr->textLayout = Tk_ComputeTextLayout(textPtr->tkfont,
|
||
textPtr->text, textPtr->numChars, textPtr->width,
|
||
textPtr->justify, 0, &width, &height);
|
||
|
||
/*
|
||
* Use overall geometry information to compute the top-left corner
|
||
* of the bounding box for the text item.
|
||
*/
|
||
|
||
leftX = (int) (textPtr->x + 0.5);
|
||
topY = (int) (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 selFirst, selLast;
|
||
short drawableX, drawableY;
|
||
|
||
textPtr = (TextItem *) itemPtr;
|
||
textInfoPtr = textPtr->textInfoPtr;
|
||
|
||
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 (textPtr->stipple != None) {
|
||
Tk_CanvasSetStippleOrigin(canvas, textPtr->gc);
|
||
}
|
||
|
||
selFirst = -1;
|
||
selLast = 0; /* lint. */
|
||
if (textInfoPtr->selItemPtr == itemPtr) {
|
||
selFirst = textInfoPtr->selectFirst;
|
||
selLast = textInfoPtr->selectLast;
|
||
if (selLast >= textPtr->numChars) {
|
||
selLast = textPtr->numChars - 1;
|
||
}
|
||
if ((selFirst >= 0) && (selFirst <= selLast)) {
|
||
/*
|
||
* Draw a special background under the selection.
|
||
*/
|
||
|
||
int xFirst, yFirst, hFirst;
|
||
int xLast, yLast, wLast;
|
||
|
||
Tk_CharBbox(textPtr->textLayout, selFirst,
|
||
&xFirst, &yFirst, NULL, &hFirst);
|
||
Tk_CharBbox(textPtr->textLayout, selLast,
|
||
&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);
|
||
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 ((selFirst >= 0) && (textPtr->selTextGC != textPtr->gc)) {
|
||
Tk_DrawTextLayout(display, drawable, textPtr->selTextGC,
|
||
textPtr->textLayout, drawableX, drawableY, selFirst,
|
||
selLast + 1);
|
||
}
|
||
|
||
if (textPtr->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, beforeThis, string)
|
||
Tk_Canvas canvas; /* Canvas containing text item. */
|
||
Tk_Item *itemPtr; /* Text item to be modified. */
|
||
int beforeThis; /* Index of character before which text is
|
||
* to be inserted. */
|
||
char *string; /* New characters to be inserted. */
|
||
{
|
||
TextItem *textPtr = (TextItem *) itemPtr;
|
||
int length;
|
||
char *new;
|
||
Tk_CanvasTextInfo *textInfoPtr = textPtr->textInfoPtr;
|
||
|
||
length = strlen(string);
|
||
if (length == 0) {
|
||
return;
|
||
}
|
||
if (beforeThis < 0) {
|
||
beforeThis = 0;
|
||
}
|
||
if (beforeThis > textPtr->numChars) {
|
||
beforeThis = textPtr->numChars;
|
||
}
|
||
|
||
new = (char *) ckalloc((unsigned) (textPtr->numChars + length + 1));
|
||
strncpy(new, textPtr->text, (size_t) beforeThis);
|
||
strcpy(new+beforeThis, string);
|
||
strcpy(new+beforeThis+length, textPtr->text+beforeThis);
|
||
ckfree(textPtr->text);
|
||
textPtr->text = new;
|
||
textPtr->numChars += length;
|
||
|
||
/*
|
||
* Inserting characters invalidates indices such as those for the
|
||
* selection and cursor. Update the indices appropriately.
|
||
*/
|
||
|
||
if (textInfoPtr->selItemPtr == itemPtr) {
|
||
if (textInfoPtr->selectFirst >= beforeThis) {
|
||
textInfoPtr->selectFirst += length;
|
||
}
|
||
if (textInfoPtr->selectLast >= beforeThis) {
|
||
textInfoPtr->selectLast += length;
|
||
}
|
||
if ((textInfoPtr->anchorItemPtr == itemPtr)
|
||
&& (textInfoPtr->selectAnchor >= beforeThis)) {
|
||
textInfoPtr->selectAnchor += length;
|
||
}
|
||
}
|
||
if (textPtr->insertPos >= beforeThis) {
|
||
textPtr->insertPos += length;
|
||
}
|
||
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; /* Index of first character to delete. */
|
||
int last; /* Index of last character to delete. */
|
||
{
|
||
TextItem *textPtr = (TextItem *) itemPtr;
|
||
int count;
|
||
char *new;
|
||
Tk_CanvasTextInfo *textInfoPtr = textPtr->textInfoPtr;
|
||
|
||
if (first < 0) {
|
||
first = 0;
|
||
}
|
||
if (last >= textPtr->numChars) {
|
||
last = textPtr->numChars-1;
|
||
}
|
||
if (first > last) {
|
||
return;
|
||
}
|
||
count = last + 1 - first;
|
||
|
||
new = (char *) ckalloc((unsigned) (textPtr->numChars + 1 - count));
|
||
strncpy(new, textPtr->text, (size_t) first);
|
||
strcpy(new+first, textPtr->text+last+1);
|
||
ckfree(textPtr->text);
|
||
textPtr->text = new;
|
||
textPtr->numChars -= count;
|
||
|
||
/*
|
||
* 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 -= count;
|
||
if (textInfoPtr->selectFirst < first) {
|
||
textInfoPtr->selectFirst = first;
|
||
}
|
||
}
|
||
if (textInfoPtr->selectLast >= first) {
|
||
textInfoPtr->selectLast -= count;
|
||
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 -= count;
|
||
if (textInfoPtr->selectAnchor < first) {
|
||
textInfoPtr->selectAnchor = first;
|
||
}
|
||
}
|
||
}
|
||
if (textPtr->insertPos > first) {
|
||
textPtr->insertPos -= count;
|
||
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;
|
||
|
||
textPtr = (TextItem *) itemPtr;
|
||
return (double) Tk_DistanceToTextLayout(textPtr->textLayout,
|
||
(int) pointPtr[0] - textPtr->leftEdge,
|
||
(int) pointPtr[1] - textPtr->header.y1);
|
||
}
|
||
|
||
/*
|
||
*--------------------------------------------------------------
|
||
*
|
||
* 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;
|
||
|
||
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
|
||
* interp->result.
|
||
*
|
||
* Side effects:
|
||
* None.
|
||
*
|
||
*--------------------------------------------------------------
|
||
*/
|
||
|
||
static int
|
||
GetTextIndex(interp, canvas, itemPtr, string, 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. */
|
||
char *string; /* Specification of a particular character
|
||
* in itemPtr's text. */
|
||
int *indexPtr; /* Where to store converted index. */
|
||
{
|
||
TextItem *textPtr = (TextItem *) itemPtr;
|
||
size_t length;
|
||
int c;
|
||
TkCanvas *canvasPtr = (TkCanvas *) canvas;
|
||
Tk_CanvasTextInfo *textInfoPtr = textPtr->textInfoPtr;
|
||
|
||
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) {
|
||
interp->result = "selection isn't in item";
|
||
return TCL_ERROR;
|
||
}
|
||
*indexPtr = textInfoPtr->selectFirst;
|
||
} else if ((c == 's') && (strncmp(string, "sel.last", length) == 0)
|
||
&& (length >= 5)) {
|
||
if (textInfoPtr->selItemPtr != itemPtr) {
|
||
interp->result = "selection isn't in item";
|
||
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_GetInt(interp, string, 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 interp->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; /* 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; /* 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 count;
|
||
Tk_CanvasTextInfo *textInfoPtr = textPtr->textInfoPtr;
|
||
|
||
count = textInfoPtr->selectLast + 1 - textInfoPtr->selectFirst - offset;
|
||
if (textInfoPtr->selectLast == textPtr->numChars) {
|
||
count -= 1;
|
||
}
|
||
if (count > maxBytes) {
|
||
count = maxBytes;
|
||
}
|
||
if (count <= 0) {
|
||
return 0;
|
||
}
|
||
strncpy(buffer, textPtr->text + textInfoPtr->selectFirst + offset,
|
||
(size_t) count);
|
||
buffer[count] = '\0';
|
||
return count;
|
||
}
|
||
|
||
/*
|
||
*--------------------------------------------------------------
|
||
*
|
||
* 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 interp->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];
|
||
|
||
if (textPtr->color == NULL) {
|
||
return TCL_OK;
|
||
}
|
||
|
||
if (Tk_CanvasPsFont(interp, canvas, textPtr->tkfont) != TCL_OK) {
|
||
return TCL_ERROR;
|
||
}
|
||
if (prepass != 0) {
|
||
return TCL_OK;
|
||
}
|
||
if (Tk_CanvasPsColor(interp, canvas, textPtr->color) != TCL_OK) {
|
||
return TCL_ERROR;
|
||
}
|
||
if (textPtr->stipple != None) {
|
||
Tcl_AppendResult(interp, "/StippleText {\n ",
|
||
(char *) NULL);
|
||
Tk_CanvasPsStipple(interp, canvas, textPtr->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,
|
||
((textPtr->stipple == None) ? "false" : "true"));
|
||
Tcl_AppendResult(interp, buffer, (char *) NULL);
|
||
|
||
return TCL_OK;
|
||
}
|