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#ifndef IMV_SOURCE_H
#define IMV_SOURCE_H
#include <stdbool.h>
#include "bitmap.h"
struct imv_source_message {
/* Pointer to sender of message */
struct imv_source *source;
/* User-supplied pointer */
void *user_data;
/* Receiver is responsible for destroying bitmap */
struct imv_bitmap *bitmap;
/* If an animated gif, the frame's duration in milliseconds, else 0 */
int frametime;
/* Error message if bitmap was NULL */
const char *error;
};
/* Generic source of one or more bitmaps. Essentially a single image file */
struct imv_source {
/* usually the path of the image this is the source of */
char *name;
/* source's image dimensions */
int width;
int height;
/* Usually 1, more if animated */
int num_frames;
/* Next frame to be loaded, 0-indexed */
int next_frame;
/* Trigger loading of the first frame. */
void (*load_first_frame)(struct imv_source *src);
/* Trigger loading of next frame. */
void (*load_next_frame)(struct imv_source *src);
/* Safely free contents of this source. After this returns
* it is safe to dealocate/overwrite the imv_source instance.
*/
void (*free)(struct imv_source *src);
/* User-specified callback for returning messages */
void (*callback)(struct imv_source_message *message);
/* User-specified pointer, included in returned messages */
void *user_data;
/* Implementation private data */
void *private;
};
#endif
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