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132 lines
3.8 KiB
C
132 lines
3.8 KiB
C
/*
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* Raster graphics library
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*
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* Copyright (c) 1997 Alfredo K. Kojima
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the Free
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* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <config.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <X11/Xlib.h>
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#include "wraster.h"
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int
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RBevelImage(RImage *image, int bevel_type)
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{
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RColor color;
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RColor cdelta;
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int w, h;
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if (image->width<3 || image->height<3)
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return False;
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w = image->width;
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h = image->height;
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if (bevel_type>0) { /* raised */
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/* top */
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cdelta.alpha = 0;
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cdelta.red = cdelta.green = cdelta.blue = 80;
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ROperateLine(image, RAddOperation, 0, 0, w-1, 0, &cdelta);
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if (bevel_type==RBEV_RAISED3 && w>3)
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ROperateLine(image, RAddOperation, 1, 1, w-3, 1,&cdelta);
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/* left */
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ROperateLine(image, RAddOperation, 0, 1, 0, h-1, &cdelta);
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if (bevel_type==RBEV_RAISED3 && h>3)
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ROperateLine(image, RAddOperation, 1, 2, 1, h-3, &cdelta);
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/* bottom */
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color.alpha = 255;
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color.red = color.green = color.blue = 0;
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cdelta.red = cdelta.green = cdelta.blue = 40;
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if (bevel_type==RBEV_RAISED2 || bevel_type==RBEV_RAISED3) {
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ROperateLine(image, RSubtractOperation, 0, h-2, w-3,
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h-2, &cdelta);
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RDrawLine(image, 0, h-1, w-1, h-1, &color);
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} else {
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ROperateLine(image, RSubtractOperation, 0, h-1, w-1, h-1,
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&cdelta);
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}
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/* right */
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if (bevel_type==RBEV_RAISED2 || bevel_type==RBEV_RAISED3) {
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ROperateLine(image, RSubtractOperation, w-2, 0, w-2, h-2,
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&cdelta);
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RDrawLine(image, w-1, 0, w-1, h-2, &color);
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} else {
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ROperateLine(image, RSubtractOperation, w-1, 0, w-1, h-2,
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&cdelta);
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}
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} else { /* sunken */
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cdelta.alpha = 0;
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cdelta.red = cdelta.green = cdelta.blue = 40;
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ROperateLine(image, RSubtractOperation, 0, 0, w-1, 0,
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&cdelta); /* top */
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ROperateLine(image, RSubtractOperation, 0, 1, 0, h-1,
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&cdelta); /* left */
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cdelta.red = cdelta.green = cdelta.blue = 80;
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ROperateLine(image, RAddOperation, 0, h-1, w-1, h-1, &cdelta); /* bottom */
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ROperateLine(image, RAddOperation, w-1, 0, w-1, h-2, &cdelta); /* right */
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}
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return True;
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}
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int
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RClearImage(RImage *image, RColor *color)
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{
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int bytes;
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bytes = image->width*image->height;
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if (color->alpha==255) {
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memset(image->data[0], color->red, bytes);
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memset(image->data[1], color->green, bytes);
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memset(image->data[2], color->blue, bytes);
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if (image->data[3])
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memset(image->data[3], 0xff, bytes);
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} else {
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register int i;
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unsigned char *dr, *dg, *db;
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int alpha, nalpha, r, g, b;
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dr = image->data[0];
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dg = image->data[1];
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db = image->data[2];
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r = color->red;
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g = color->green;
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b = color->blue;
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alpha = color->alpha;
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nalpha = 255 - alpha;
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for (i=0; i<bytes; i++) {
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*dr = (((int)*dr * nalpha) + (r * alpha))/256;
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*dg = (((int)*dg * nalpha) + (g * alpha))/256;
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*db = (((int)*db * nalpha) + (b * alpha))/256;
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dr++; dg++; db++;
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}
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}
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return True;
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}
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