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comparison src/video/SDL_cursor.c @ 1163:96ef83467667

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Prevent division-by-zero in WarpMouse if surface's pitch is zero (a GL surface?).
author Ryan C. Gordon <icculus@icculus.org>
date Sun, 30 Oct 2005 05:45:46 +0000
parents af8b0f9ac2f4
children f418917e0b7a
comparison
equal deleted inserted replaced
1162:2651158f59b8 1163:96ef83467667
301 SDL_SetError("A video mode must be set before warping mouse"); 301 SDL_SetError("A video mode must be set before warping mouse");
302 return; 302 return;
303 } 303 }
304 304
305 /* If we have an offset video mode, offset the mouse coordinates */ 305 /* If we have an offset video mode, offset the mouse coordinates */
306 x += (this->screen->offset % this->screen->pitch) / 306 if (this->screen->pitch == 0) {
307 this->screen->format->BytesPerPixel; 307 x += this->screen->offset / this->screen->format->BytesPerPixel;
308 y += (this->screen->offset / this->screen->pitch); 308 y += this->screen->offset;
309 } else {
310 x += (this->screen->offset % this->screen->pitch) /
311 this->screen->format->BytesPerPixel;
312 y += (this->screen->offset / this->screen->pitch);
313 }
309 314
310 /* This generates a mouse motion event */ 315 /* This generates a mouse motion event */
311 if ( video->WarpWMCursor ) { 316 if ( video->WarpWMCursor ) {
312 video->WarpWMCursor(this, x, y); 317 video->WarpWMCursor(this, x, y);
313 } else { 318 } else {