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[wmaker-crm.git] / wrlib / misc.c
blob15635daedf97fca5684c2ee525b41f7ede226771
1 /*
2 * Raster graphics library
3 *
4 * Copyright (c) 1997-2000 Alfredo K. Kojima
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Library General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Library General Public License for more details.
16 * You should have received a copy of the GNU Library General Public
17 * License along with this library; if not, write to the Free
18 * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 #include <config.h>
22 #include <stdlib.h>
23 #include <stdio.h>
24 #include <string.h>
25 #include <X11/Xlib.h>
27 #include "wraster.h"
30 void
31 RBevelImage(RImage *image, int bevel_type)
33 RColor color;
34 RColor cdelta;
35 int w, h;
37 if (image->width<3 || image->height<3)
38 return;
40 w = image->width;
41 h = image->height;
42 if (bevel_type>0) { /* raised */
43 /* top */
44 cdelta.alpha = 0;
45 cdelta.red = cdelta.green = cdelta.blue = 80;
46 ROperateLine(image, RAddOperation, 0, 0, w-1, 0, &cdelta);
47 if (bevel_type==RBEV_RAISED3 && w>3)
48 ROperateLine(image, RAddOperation, 1, 1, w-3, 1,&cdelta);
50 /* left */
51 ROperateLine(image, RAddOperation, 0, 1, 0, h-1, &cdelta);
52 if (bevel_type==RBEV_RAISED3 && h>3)
53 ROperateLine(image, RAddOperation, 1, 2, 1, h-3, &cdelta);
55 /* bottom */
56 color.alpha = 255;
57 color.red = color.green = color.blue = 0;
58 cdelta.red = cdelta.green = cdelta.blue = 40;
59 if (bevel_type==RBEV_RAISED2 || bevel_type==RBEV_RAISED3) {
60 ROperateLine(image, RSubtractOperation, 0, h-2, w-3,
61 h-2, &cdelta);
62 RDrawLine(image, 0, h-1, w-1, h-1, &color);
63 } else {
64 ROperateLine(image, RSubtractOperation, 0, h-1, w-1, h-1,
65 &cdelta);
68 /* right */
69 if (bevel_type==RBEV_RAISED2 || bevel_type==RBEV_RAISED3) {
70 ROperateLine(image, RSubtractOperation, w-2, 0, w-2, h-2,
71 &cdelta);
72 RDrawLine(image, w-1, 0, w-1, h-2, &color);
73 } else {
74 ROperateLine(image, RSubtractOperation, w-1, 0, w-1, h-2,
75 &cdelta);
77 } else { /* sunken */
78 cdelta.alpha = 0;
79 cdelta.red = cdelta.green = cdelta.blue = 40;
80 ROperateLine(image, RSubtractOperation, 0, 0, w-1, 0,
81 &cdelta); /* top */
82 ROperateLine(image, RSubtractOperation, 0, 1, 0, h-1,
83 &cdelta); /* left */
84 cdelta.red = cdelta.green = cdelta.blue = 80;
85 ROperateLine(image, RAddOperation, 0, h-1, w-1, h-1, &cdelta); /* bottom */
86 ROperateLine(image, RAddOperation, w-1, 0, w-1, h-2, &cdelta); /* right */
91 void
92 RFillImage(RImage *image, RColor *color)
94 if (image->format == RRGBAFormat) {
95 unsigned char *d = image->data;
96 int i;
98 for (i = 0; i < image->width; i++) {
99 *d++ = color->red;
100 *d++ = color->green;
101 *d++ = color->blue;
102 *d++ = color->alpha;
104 for (i = 1; i < image->height; i++, d += image->width*4) {
105 memcpy(d, image->data, image->width*4);
107 } else {
108 unsigned char *d = image->data;
109 int i;
111 for (i = 0; i < image->width; i++) {
112 *d++ = color->red;
113 *d++ = color->green;
114 *d++ = color->blue;
116 for (i = 1; i < image->height; i++, d += image->width*3) {
117 memcpy(d, image->data, image->width*3);
123 void
124 RClearImage(RImage *image, RColor *color)
126 if (color->alpha==255) {
127 if (image->format == RRGBAFormat) {
128 unsigned char *d = image->data;
129 int i;
131 for (i = 0; i < image->width; i++) {
132 *d++ = color->red;
133 *d++ = color->green;
134 *d++ = color->blue;
135 *d++ = 0xff;
137 for (i = 1; i < image->height; i++, d += image->width*4) {
138 memcpy(d, image->data, image->width*4);
140 } else {
141 unsigned char *d = image->data;
142 int i;
144 for (i = 0; i < image->width; i++) {
145 *d++ = color->red;
146 *d++ = color->green;
147 *d++ = color->blue;
149 for (i = 1; i < image->height; i++, d += image->width*3) {
150 memcpy(d, image->data, image->width*3);
153 } else {
154 int bytes = image->width*image->height;
155 int i;
156 unsigned char *d;
157 int alpha, nalpha, r, g, b;
159 d = image->data;
161 alpha = color->alpha;
162 r = color->red * alpha;
163 g = color->green * alpha;
164 b = color->blue * alpha;
165 nalpha = 255 - alpha;
167 for (i=0; i<bytes; i++) {
168 *d = (((int)*d * nalpha) + r)/256;
169 d++;
170 *d = (((int)*d * nalpha) + g)/256;
171 d++;
172 *d = (((int)*d * nalpha) + b)/256;
173 d++;
174 if (image->format == RRGBAFormat) {
175 d++;
181 const char*
182 RMessageForError(int errorCode)
184 switch (errorCode) {
185 case RERR_NONE:
186 return "no error";
188 case RERR_OPEN:
189 return "could not open file";
191 case RERR_READ:
192 return "error reading from file";
194 case RERR_WRITE:
195 return "error writing to file";
197 case RERR_NOMEMORY:
198 return "out of memory";
200 case RERR_NOCOLOR:
201 return "out of color cells";
203 case RERR_BADIMAGEFILE:
204 return "invalid or corrupted image file";
206 case RERR_BADFORMAT:
207 return "the image format in the file is not supported and can't be loaded";
209 case RERR_BADINDEX:
210 return "image file does not contain requested image index";
212 case RERR_BADVISUALID:
213 return "request for an invalid visual ID";
215 case RERR_STDCMAPFAIL:
216 return "failed to create standard colormap";
218 case RERR_XERROR:
219 return "internal X error";
221 default:
222 case RERR_INTERNAL:
223 return "internal error";