536 lines
16 KiB
C
536 lines
16 KiB
C
/*
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* tkWin3d.c --
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*
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* This file contains the platform specific routines for
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* drawing 3d borders in the Windows 95 style.
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*
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* Copyright (c) 1996 by 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: @(#) tkWin3d.c 1.6 97/08/12 14:28:54
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*/
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#include <tk3d.h>
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#include <tkWinInt.h>
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/*
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* This structure is used to keep track of the extra colors used by
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* Windows 3d borders.
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*/
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typedef struct {
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TkBorder info;
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XColor *light2ColorPtr; /* System3dLight */
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XColor *dark2ColorPtr; /* System3dDarkShadow */
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} WinBorder;
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/*
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*----------------------------------------------------------------------
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*
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* TkpGetBorder --
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*
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* This function allocates a new TkBorder structure.
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*
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* Results:
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* Returns a newly allocated TkBorder.
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*
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* Side effects:
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* None.
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*
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*----------------------------------------------------------------------
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*/
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TkBorder *
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TkpGetBorder()
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{
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WinBorder *borderPtr = (WinBorder *) ckalloc(sizeof(WinBorder));
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borderPtr->light2ColorPtr = NULL;
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borderPtr->dark2ColorPtr = NULL;
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return (TkBorder *) borderPtr;
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}
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/*
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*----------------------------------------------------------------------
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*
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* TkpFreeBorder --
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*
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* This function frees any colors allocated by the platform
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* specific part of this module.
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*
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* Results:
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* None.
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*
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* Side effects:
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* May deallocate some colors.
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*
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*----------------------------------------------------------------------
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*/
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void
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TkpFreeBorder(borderPtr)
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TkBorder *borderPtr;
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{
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WinBorder *winBorderPtr = (WinBorder *) borderPtr;
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if (winBorderPtr->light2ColorPtr) {
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Tk_FreeColor(winBorderPtr->light2ColorPtr);
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}
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if (winBorderPtr->dark2ColorPtr) {
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Tk_FreeColor(winBorderPtr->dark2ColorPtr);
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}
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}
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/*
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*--------------------------------------------------------------
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*
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* Tk_3DVerticalBevel --
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*
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* This procedure draws a vertical bevel along one side of
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* an object. The bevel is always rectangular in shape:
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* |||
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* |||
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* |||
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* |||
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* |||
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* |||
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* An appropriate shadow color is chosen for the bevel based
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* on the leftBevel and relief arguments. Normally this
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* procedure is called first, then Tk_3DHorizontalBevel is
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* called next to draw neat corners.
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*
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* Results:
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* None.
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*
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* Side effects:
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* Graphics are drawn in drawable.
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*
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*--------------------------------------------------------------
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*/
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void
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Tk_3DVerticalBevel(tkwin, drawable, border, x, y, width, height,
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leftBevel, relief)
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Tk_Window tkwin; /* Window for which border was allocated. */
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Drawable drawable; /* X window or pixmap in which to draw. */
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Tk_3DBorder border; /* Token for border to draw. */
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int x, y, width, height; /* Area of vertical bevel. */
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int leftBevel; /* Non-zero means this bevel forms the
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* left side of the object; 0 means it
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* forms the right side. */
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int relief; /* Kind of bevel to draw. For example,
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* TK_RELIEF_RAISED means interior of
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* object should appear higher than
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* exterior. */
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{
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TkBorder *borderPtr = (TkBorder *) border;
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int left, right;
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Display *display = Tk_Display(tkwin);
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TkWinDCState state;
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HDC dc = TkWinGetDrawableDC(display, drawable, &state);
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int half;
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if ((borderPtr->lightGC == None) && (relief != TK_RELIEF_FLAT)) {
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TkpGetShadows(borderPtr, tkwin);
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}
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switch (relief) {
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case TK_RELIEF_RAISED:
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left = (leftBevel)
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? borderPtr->lightGC->foreground
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: borderPtr->darkGC->foreground;
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right = (leftBevel)
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? ((WinBorder *)borderPtr)->light2ColorPtr->pixel
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: ((WinBorder *)borderPtr)->dark2ColorPtr->pixel;
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break;
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case TK_RELIEF_SUNKEN:
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left = (leftBevel)
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? ((WinBorder *)borderPtr)->dark2ColorPtr->pixel
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: ((WinBorder *)borderPtr)->light2ColorPtr->pixel;
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right = (leftBevel)
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? borderPtr->darkGC->foreground
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: borderPtr->lightGC->foreground;
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break;
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case TK_RELIEF_RIDGE:
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left = borderPtr->lightGC->foreground;
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right = borderPtr->darkGC->foreground;
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break;
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case TK_RELIEF_GROOVE:
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left = borderPtr->darkGC->foreground;
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right = borderPtr->lightGC->foreground;
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break;
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case TK_RELIEF_FLAT:
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left = right = borderPtr->bgGC->foreground;
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break;
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case TK_RELIEF_SOLID:
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left = right = RGB(0,0,0);
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break;
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}
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half = width/2;
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if (leftBevel && (width & 1)) {
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half++;
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}
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TkWinFillRect(dc, x, y, half, height, left);
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TkWinFillRect(dc, x+half, y, width-half, height, right);
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TkWinReleaseDrawableDC(drawable, dc, &state);
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}
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/*
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*--------------------------------------------------------------
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*
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* Tk_3DHorizontalBevel --
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*
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* This procedure draws a horizontal bevel along one side of
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* an object. The bevel has mitered corners (depending on
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* leftIn and rightIn arguments).
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*
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* Results:
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* None.
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*
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* Side effects:
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* None.
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*
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*--------------------------------------------------------------
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*/
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void
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Tk_3DHorizontalBevel(tkwin, drawable, border, x, y, width, height,
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leftIn, rightIn, topBevel, relief)
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Tk_Window tkwin; /* Window for which border was allocated. */
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Drawable drawable; /* X window or pixmap in which to draw. */
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Tk_3DBorder border; /* Token for border to draw. */
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int x, y, width, height; /* Bounding box of area of bevel. Height
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* gives width of border. */
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int leftIn, rightIn; /* Describes whether the left and right
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* edges of the bevel angle in or out as
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* they go down. For example, if "leftIn"
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* is true, the left side of the bevel
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* looks like this:
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* ___________
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* __________
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* _________
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* ________
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*/
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int topBevel; /* Non-zero means this bevel forms the
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* top side of the object; 0 means it
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* forms the bottom side. */
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int relief; /* Kind of bevel to draw. For example,
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* TK_RELIEF_RAISED means interior of
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* object should appear higher than
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* exterior. */
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{
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TkBorder *borderPtr = (TkBorder *) border;
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Display *display = Tk_Display(tkwin);
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int bottom, halfway, x1, x2, x1Delta, x2Delta;
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TkWinDCState state;
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HDC dc = TkWinGetDrawableDC(display, drawable, &state);
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int topColor, bottomColor;
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if ((borderPtr->lightGC == None) && (relief != TK_RELIEF_FLAT)) {
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TkpGetShadows(borderPtr, tkwin);
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}
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/*
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* Compute a GC for the top half of the bevel and a GC for the
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* bottom half (they're the same in many cases).
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*/
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switch (relief) {
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case TK_RELIEF_RAISED:
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topColor = (topBevel)
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? borderPtr->lightGC->foreground
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: borderPtr->darkGC->foreground;
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bottomColor = (topBevel)
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? ((WinBorder *)borderPtr)->light2ColorPtr->pixel
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: ((WinBorder *)borderPtr)->dark2ColorPtr->pixel;
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break;
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case TK_RELIEF_SUNKEN:
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topColor = (topBevel)
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? ((WinBorder *)borderPtr)->dark2ColorPtr->pixel
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: ((WinBorder *)borderPtr)->light2ColorPtr->pixel;
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bottomColor = (topBevel)
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? borderPtr->darkGC->foreground
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: borderPtr->lightGC->foreground;
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break;
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case TK_RELIEF_RIDGE:
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topColor = borderPtr->lightGC->foreground;
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bottomColor = borderPtr->darkGC->foreground;
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break;
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case TK_RELIEF_GROOVE:
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topColor = borderPtr->darkGC->foreground;
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bottomColor = borderPtr->lightGC->foreground;
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break;
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case TK_RELIEF_FLAT:
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topColor = bottomColor = borderPtr->bgGC->foreground;
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break;
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case TK_RELIEF_SOLID:
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topColor = bottomColor = RGB(0,0,0);
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}
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/*
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* Compute various other geometry-related stuff.
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*/
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if (leftIn) {
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x1 = x+1;
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} else {
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x1 = x+height-1;
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}
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x2 = x+width;
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if (rightIn) {
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x2--;
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} else {
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x2 -= height;
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}
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x1Delta = (leftIn) ? 1 : -1;
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x2Delta = (rightIn) ? -1 : 1;
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halfway = y + height/2;
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if (topBevel && (height & 1)) {
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halfway++;
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}
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bottom = y + height;
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/*
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* Draw one line for each y-coordinate covered by the bevel.
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*/
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for ( ; y < bottom; y++) {
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/*
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* In some weird cases (such as large border widths for skinny
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* rectangles) x1 can be >= x2. Don't draw the lines
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* in these cases.
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*/
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if (x1 < x2) {
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TkWinFillRect(dc, x1, y, x2-x1, 1,
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(y < halfway) ? topColor : bottomColor);
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}
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x1 += x1Delta;
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x2 += x2Delta;
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}
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TkWinReleaseDrawableDC(drawable, dc, &state);
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}
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/*
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*----------------------------------------------------------------------
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*
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* TkpGetShadows --
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*
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* This procedure computes the shadow colors for a 3-D border
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* and fills in the corresponding fields of the Border structure.
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* It's called lazily, so that the colors aren't allocated until
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* something is actually drawn with them. That way, if a border
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* is only used for flat backgrounds the shadow colors will
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* never be allocated.
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*
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* Results:
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* None.
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*
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* Side effects:
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* The lightGC and darkGC fields in borderPtr get filled in,
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* if they weren't already.
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*
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*----------------------------------------------------------------------
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*/
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void
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TkpGetShadows(borderPtr, tkwin)
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TkBorder *borderPtr; /* Information about border. */
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Tk_Window tkwin; /* Window where border will be used for
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* drawing. */
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{
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XColor lightColor, darkColor;
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int tmp1, tmp2;
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XGCValues gcValues;
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if (borderPtr->lightGC != None) {
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return;
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}
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/*
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* Handle the special case of the default system colors.
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*/
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if ((TkWinIndexOfColor(borderPtr->bgColorPtr) == COLOR_3DFACE)
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|| (TkWinIndexOfColor(borderPtr->bgColorPtr) == COLOR_WINDOW)) {
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borderPtr->darkColorPtr = Tk_GetColor(NULL, tkwin,
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Tk_GetUid("SystemButtonShadow"));
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gcValues.foreground = borderPtr->darkColorPtr->pixel;
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borderPtr->darkGC = Tk_GetGC(tkwin, GCForeground, &gcValues);
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borderPtr->lightColorPtr = Tk_GetColor(NULL, tkwin,
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Tk_GetUid("SystemButtonHighlight"));
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gcValues.foreground = borderPtr->lightColorPtr->pixel;
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borderPtr->lightGC = Tk_GetGC(tkwin, GCForeground, &gcValues);
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((WinBorder*)borderPtr)->dark2ColorPtr = Tk_GetColor(NULL, tkwin,
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Tk_GetUid("System3dDarkShadow"));
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((WinBorder*)borderPtr)->light2ColorPtr = Tk_GetColor(NULL, tkwin,
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Tk_GetUid("System3dLight"));
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return;
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} else {
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darkColor.red = 0;
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darkColor.green = 0;
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darkColor.blue = 0;
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((WinBorder*)borderPtr)->dark2ColorPtr = Tk_GetColorByValue(tkwin,
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&darkColor);
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lightColor = *(borderPtr->bgColorPtr);
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((WinBorder*)borderPtr)->light2ColorPtr = Tk_GetColorByValue(tkwin,
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&lightColor);
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}
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/*
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* First, handle the case of a color display with lots of colors.
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* The shadow colors get computed using whichever formula results
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* in the greatest change in color:
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* 1. Lighter shadow is half-way to white, darker shadow is half
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* way to dark.
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* 2. Lighter shadow is 40% brighter than background, darker shadow
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* is 40% darker than background.
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*/
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if (Tk_Depth(tkwin) >= 6) {
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/*
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* This is a color display with lots of colors. For the dark
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* shadow, cut 40% from each of the background color components.
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* For the light shadow, boost each component by 40% or half-way
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* to white, whichever is greater (the first approach works
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* better for unsaturated colors, the second for saturated ones).
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*/
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darkColor.red = (60 * (int) borderPtr->bgColorPtr->red)/100;
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darkColor.green = (60 * (int) borderPtr->bgColorPtr->green)/100;
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darkColor.blue = (60 * (int) borderPtr->bgColorPtr->blue)/100;
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borderPtr->darkColorPtr = Tk_GetColorByValue(tkwin, &darkColor);
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gcValues.foreground = borderPtr->darkColorPtr->pixel;
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borderPtr->darkGC = Tk_GetGC(tkwin, GCForeground, &gcValues);
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/*
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* Compute the colors using integers, not using lightColor.red
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* etc.: these are shorts and may have problems with integer
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* overflow.
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*/
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tmp1 = (14 * (int) borderPtr->bgColorPtr->red)/10;
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if (tmp1 > MAX_INTENSITY) {
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tmp1 = MAX_INTENSITY;
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}
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tmp2 = (MAX_INTENSITY + (int) borderPtr->bgColorPtr->red)/2;
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lightColor.red = (tmp1 > tmp2) ? tmp1 : tmp2;
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tmp1 = (14 * (int) borderPtr->bgColorPtr->green)/10;
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if (tmp1 > MAX_INTENSITY) {
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tmp1 = MAX_INTENSITY;
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}
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tmp2 = (MAX_INTENSITY + (int) borderPtr->bgColorPtr->green)/2;
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lightColor.green = (tmp1 > tmp2) ? tmp1 : tmp2;
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tmp1 = (14 * (int) borderPtr->bgColorPtr->blue)/10;
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if (tmp1 > MAX_INTENSITY) {
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tmp1 = MAX_INTENSITY;
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}
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tmp2 = (MAX_INTENSITY + (int) borderPtr->bgColorPtr->blue)/2;
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lightColor.blue = (tmp1 > tmp2) ? tmp1 : tmp2;
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borderPtr->lightColorPtr = Tk_GetColorByValue(tkwin, &lightColor);
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gcValues.foreground = borderPtr->lightColorPtr->pixel;
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borderPtr->lightGC = Tk_GetGC(tkwin, GCForeground, &gcValues);
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return;
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}
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if (borderPtr->shadow == None) {
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borderPtr->shadow = Tk_GetBitmap((Tcl_Interp *) NULL, tkwin,
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Tk_GetUid("gray50"));
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if (borderPtr->shadow == None) {
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panic("TkpGetShadows couldn't allocate bitmap for border");
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}
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}
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if (borderPtr->visual->map_entries > 2) {
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/*
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* This isn't a monochrome display, but the colormap either
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* ran out of entries or didn't have very many to begin with.
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* Generate the light shadows with a white stipple and the
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* dark shadows with a black stipple.
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*/
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gcValues.foreground = borderPtr->bgColorPtr->pixel;
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gcValues.background = BlackPixelOfScreen(borderPtr->screen);
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gcValues.stipple = borderPtr->shadow;
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gcValues.fill_style = FillOpaqueStippled;
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borderPtr->darkGC = Tk_GetGC(tkwin,
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GCForeground|GCBackground|GCStipple|GCFillStyle, &gcValues);
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gcValues.foreground = WhitePixelOfScreen(borderPtr->screen);
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gcValues.background = borderPtr->bgColorPtr->pixel;
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borderPtr->lightGC = Tk_GetGC(tkwin,
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GCForeground|GCBackground|GCStipple|GCFillStyle, &gcValues);
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return;
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}
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/*
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* This is just a measly monochrome display, hardly even worth its
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* existence on this earth. Make one shadow a 50% stipple and the
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* other the opposite of the background.
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*/
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gcValues.foreground = WhitePixelOfScreen(borderPtr->screen);
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gcValues.background = BlackPixelOfScreen(borderPtr->screen);
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gcValues.stipple = borderPtr->shadow;
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gcValues.fill_style = FillOpaqueStippled;
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borderPtr->lightGC = Tk_GetGC(tkwin,
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GCForeground|GCBackground|GCStipple|GCFillStyle, &gcValues);
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if (borderPtr->bgColorPtr->pixel
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== WhitePixelOfScreen(borderPtr->screen)) {
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gcValues.foreground = BlackPixelOfScreen(borderPtr->screen);
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borderPtr->darkGC = Tk_GetGC(tkwin, GCForeground, &gcValues);
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} else {
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borderPtr->darkGC = borderPtr->lightGC;
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borderPtr->lightGC = Tk_GetGC(tkwin, GCForeground, &gcValues);
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}
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}
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/*
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*----------------------------------------------------------------------
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*
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* TkWinGetBorderPixels --
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*
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* This routine returns the 5 COLORREFs used to draw a given
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* 3d border.
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*
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* Results:
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* Returns the colors in the specified array.
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*
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* Side effects:
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* May cause the remaining colors to be allocated.
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*
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*----------------------------------------------------------------------
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*/
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COLORREF
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TkWinGetBorderPixels(tkwin, border, which)
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Tk_Window tkwin;
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Tk_3DBorder border;
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int which; /* One of TK_3D_FLAT_GC, TK_3D_LIGHT_GC,
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* TK_3D_DARK_GC, TK_3D_LIGHT2, TK_3D_DARK2 */
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{
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WinBorder *borderPtr = (WinBorder *) border;
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if (borderPtr->info.lightGC == None) {
|
||
TkpGetShadows(&borderPtr->info, tkwin);
|
||
}
|
||
switch (which) {
|
||
case TK_3D_FLAT_GC:
|
||
return borderPtr->info.bgColorPtr->pixel;
|
||
case TK_3D_LIGHT_GC:
|
||
if (borderPtr->info.lightColorPtr == NULL) {
|
||
return WhitePixelOfScreen(borderPtr->info.screen);
|
||
}
|
||
return borderPtr->info.lightColorPtr->pixel;
|
||
case TK_3D_DARK_GC:
|
||
if (borderPtr->info.darkColorPtr == NULL) {
|
||
return BlackPixelOfScreen(borderPtr->info.screen);
|
||
}
|
||
return borderPtr->info.darkColorPtr->pixel;
|
||
case TK_3D_LIGHT2:
|
||
return borderPtr->light2ColorPtr->pixel;
|
||
case TK_3D_DARK2:
|
||
return borderPtr->dark2ColorPtr->pixel;
|
||
}
|
||
return 0;
|
||
}
|