97 lines
2.2 KiB
C
97 lines
2.2 KiB
C
/* vim:expandtab:ts=2 sw=2:
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*/
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/* Grafx2 - The Ultimate 256-color bitmap paint program
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* Gif Analyzer tool
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Copyright 2018 Thomas Bernard
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Grafx2 is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; version 2
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of the License.
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Grafx2 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
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Grafx2; if not, see <http://www.gnu.org/licenses/>
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*/
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#include <stdio.h>
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#include <SDL.h>
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#include <SDL_image.h>
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SDL_Surface * screen = NULL;
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int Show_IMG(const char * filename)
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{
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SDL_Surface * image;
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SDL_Rect dest;
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image = IMG_Load(filename);
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if(image == NULL) {
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fprintf(stderr, "Cannot load image \"%s\"\n", filename);
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return -1;
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}
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if(screen == NULL) {
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screen = SDL_SetVideoMode(image->w, image->h, image->format->BitsPerPixel, 0);
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}
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dest.x = 0;
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dest.y = 0;
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dest.w = image->w;
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dest.h = image->h;
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if(screen != NULL) {
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SDL_BlitSurface(image, NULL, screen, &dest);
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SDL_UpdateRects(screen, 1, &dest);
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} else {
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fprintf(stderr, "no SDL screen open\n");
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}
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SDL_FreeSurface(image);
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return 0;
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}
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void Manage_Events(void)
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{
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SDL_Event event;
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for(;;) {
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SDL_WaitEvent(&event);
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switch(event.type) {
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case SDL_QUIT:
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return;
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case SDL_KEYDOWN:
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if(event.key.keysym.sym == SDLK_ESCAPE) return; /* ESC to quit */
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break;
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case SDL_MOUSEBUTTONDOWN:
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return; /* clic to quit */
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default:
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break;
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}
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}
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}
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int main(int argc, char * * argv)
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{
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const char * filename;
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if(argc < 2) {
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fprintf(stderr, "Usage:\t%s <image>\n", argv[0]);
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return 1;
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}
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filename = argv[1];
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if(SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER) < 0) {
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fprintf(stderr, "*** SDL Init Error ***\n");
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return 1;
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}
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atexit(SDL_Quit);
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SDL_WM_SetCaption(filename, filename); /* window caption, icon caption */
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if(Show_IMG(filename) < 0)
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return 1;
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Manage_Events();
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return 0;
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}
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