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c3a132215d
This patch makes all files appear together when listing files and it is more clear about their function. Signed-off-by: Christophe CURIS <christophe.curis@free.fr>
272 lines
6.4 KiB
C
272 lines
6.4 KiB
C
/* xpm.c - load XPM image from file using libXpm
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*
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* Raster graphics library
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*
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* Copyright (c) 1997-2003 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., 51 Franklin St, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*/
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#include <config.h>
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#include <X11/Xlib.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/xpm.h>
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#include "wraster.h"
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#include "imgformat.h"
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RImage *RGetImageFromXPMData(RContext * context, char **xpmData)
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{
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Display *dpy = context->dpy;
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Colormap cmap = context->cmap;
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RImage *image;
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XpmImage xpm;
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unsigned char *color_table[4];
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unsigned char *data;
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int *p;
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int i;
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i = XpmCreateXpmImageFromData(xpmData, &xpm, (XpmInfo *) NULL);
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if (i != XpmSuccess) {
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switch (i) {
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case XpmOpenFailed:
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RErrorCode = RERR_OPEN;
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break;
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case XpmFileInvalid:
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RErrorCode = RERR_BADIMAGEFILE;
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break;
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case XpmNoMemory:
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RErrorCode = RERR_NOMEMORY;
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break;
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default:
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RErrorCode = RERR_BADIMAGEFILE;
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break;
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}
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return NULL;
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}
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if (xpm.height < 1 || xpm.width < 1) {
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RErrorCode = RERR_BADIMAGEFILE;
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XpmFreeXpmImage(&xpm);
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return NULL;
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}
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if (xpm.colorTable == NULL) {
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RErrorCode = RERR_BADIMAGEFILE;
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XpmFreeXpmImage(&xpm);
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return NULL;
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}
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image = RCreateImage(xpm.width, xpm.height, True);
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if (!image) {
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XpmFreeXpmImage(&xpm);
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return NULL;
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}
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/* make color table */
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for (i = 0; i < 4; i++) {
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color_table[i] = malloc(xpm.ncolors * sizeof(char));
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if (!color_table[i]) {
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for (i = i - 1; i >= 0; i--) {
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if (color_table[i])
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free(color_table[i]);
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}
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RReleaseImage(image);
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RErrorCode = RERR_NOMEMORY;
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XpmFreeXpmImage(&xpm);
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return NULL;
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}
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}
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for (i = 0; i < xpm.ncolors; i++) {
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XColor xcolor;
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char *color = NULL;
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if (xpm.colorTable[i].c_color)
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color = xpm.colorTable[i].c_color;
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else if (xpm.colorTable[i].g_color)
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color = xpm.colorTable[i].g_color;
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else if (xpm.colorTable[i].g4_color)
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color = xpm.colorTable[i].g4_color;
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else if (xpm.colorTable[i].m_color)
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color = xpm.colorTable[i].m_color;
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else if (xpm.colorTable[i].symbolic)
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color = xpm.colorTable[i].symbolic;
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if (!color) {
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color_table[0][i] = 0xbe;
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color_table[1][i] = 0xbe;
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color_table[2][i] = 0xbe;
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color_table[3][i] = 0xff;
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continue;
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}
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if (strncmp(color, "None", 4) == 0) {
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color_table[0][i] = 0;
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color_table[1][i] = 0;
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color_table[2][i] = 0;
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color_table[3][i] = 0;
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continue;
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}
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if (XParseColor(dpy, cmap, color, &xcolor)) {
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color_table[0][i] = xcolor.red >> 8;
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color_table[1][i] = xcolor.green >> 8;
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color_table[2][i] = xcolor.blue >> 8;
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color_table[3][i] = 0xff;
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} else {
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color_table[0][i] = 0xbe;
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color_table[1][i] = 0xbe;
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color_table[2][i] = 0xbe;
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color_table[3][i] = 0xff;
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}
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}
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/* convert pixmap to RImage */
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p = (int *)xpm.data;
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data = image->data;
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for (i = 0; i < xpm.width * xpm.height; i++) {
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*(data++) = color_table[0][*p];
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*(data++) = color_table[1][*p];
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*(data++) = color_table[2][*p];
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*(data++) = color_table[3][*p];
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p++;
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}
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for (i = 0; i < 4; i++) {
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free(color_table[i]);
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}
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XpmFreeXpmImage(&xpm);
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return image;
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}
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RImage *RLoadXPM(RContext * context, const char *file)
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{
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Display *dpy = context->dpy;
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Colormap cmap = context->cmap;
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RImage *image;
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XpmImage xpm;
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unsigned char *color_table[4];
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unsigned char *data;
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int *p;
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int i;
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i = XpmReadFileToXpmImage((char *)file, &xpm, (XpmInfo *) NULL);
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if (i != XpmSuccess) {
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switch (i) {
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case XpmOpenFailed:
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RErrorCode = RERR_OPEN;
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break;
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case XpmFileInvalid:
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RErrorCode = RERR_BADIMAGEFILE;
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break;
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case XpmNoMemory:
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RErrorCode = RERR_NOMEMORY;
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break;
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default:
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RErrorCode = RERR_BADIMAGEFILE;
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break;
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}
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return NULL;
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}
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if (xpm.height < 1 || xpm.width < 1) {
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RErrorCode = RERR_BADIMAGEFILE;
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XpmFreeXpmImage(&xpm);
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return NULL;
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}
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if (xpm.colorTable == NULL) {
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RErrorCode = RERR_BADIMAGEFILE;
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XpmFreeXpmImage(&xpm);
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return NULL;
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}
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image = RCreateImage(xpm.width, xpm.height, True);
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if (!image) {
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XpmFreeXpmImage(&xpm);
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return NULL;
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}
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/* make color table */
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for (i = 0; i < 4; i++) {
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color_table[i] = malloc(xpm.ncolors * sizeof(char));
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if (!color_table[i]) {
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for (i = i - 1; i >= 0; i--) {
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if (color_table[i])
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free(color_table[i]);
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}
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RReleaseImage(image);
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RErrorCode = RERR_NOMEMORY;
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XpmFreeXpmImage(&xpm);
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return NULL;
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}
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}
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for (i = 0; i < xpm.ncolors; i++) {
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XColor xcolor;
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char *color = NULL;
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if (xpm.colorTable[i].c_color)
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color = xpm.colorTable[i].c_color;
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else if (xpm.colorTable[i].g_color)
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color = xpm.colorTable[i].g_color;
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else if (xpm.colorTable[i].g4_color)
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color = xpm.colorTable[i].g4_color;
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else if (xpm.colorTable[i].m_color)
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color = xpm.colorTable[i].m_color;
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else if (xpm.colorTable[i].symbolic)
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color = xpm.colorTable[i].symbolic;
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if (!color) {
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color_table[0][i] = 0xbe;
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color_table[1][i] = 0xbe;
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color_table[2][i] = 0xbe;
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color_table[3][i] = 0xff;
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continue;
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}
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if (strncmp(color, "None", 4) == 0) {
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color_table[0][i] = 0;
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color_table[1][i] = 0;
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color_table[2][i] = 0;
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color_table[3][i] = 0;
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continue;
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}
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if (XParseColor(dpy, cmap, color, &xcolor)) {
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color_table[0][i] = xcolor.red >> 8;
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color_table[1][i] = xcolor.green >> 8;
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color_table[2][i] = xcolor.blue >> 8;
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color_table[3][i] = 0xff;
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} else {
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color_table[0][i] = 0xbe;
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color_table[1][i] = 0xbe;
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color_table[2][i] = 0xbe;
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color_table[3][i] = 0xff;
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}
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}
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/* convert pixmap to RImage */
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p = (int *)xpm.data;
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data = image->data;
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for (i = 0; i < xpm.width * xpm.height; i++, p++) {
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*(data++) = color_table[0][*p];
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*(data++) = color_table[1][*p];
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*(data++) = color_table[2][*p];
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*(data++) = color_table[3][*p];
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}
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for (i = 0; i < 4; i++) {
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free(color_table[i]);
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}
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XpmFreeXpmImage(&xpm);
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return image;
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}
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