extern GPrivate *glk_data_key;
void on_size_prepared(GdkPixbufLoader *loader, gint width, gint height, struct image_info *info);
+void on_pixbuf_closed(GdkPixbufLoader *loader, gpointer data);
+static gboolean image_loaded;
static gboolean size_determined;
-glui32
-glk_image_get_info(glui32 image, glui32 *width, glui32 *height)
+static struct image_info*
+load_image_in_cache(glui32 image, gint width, gint height)
{
ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
- giblorb_result_t res;
giblorb_err_t blorb_error = 0;
+ giblorb_result_t resource;
GError *pixbuf_error = NULL;
- struct image_info *info = g_new0(struct image_info, 1);
- info->resource_number = image;
guchar *buffer;
- //printf("glk_image_get_info(%d)\n", image);
-
/* Lookup the proper resource */
- blorb_error = giblorb_load_resource(glk_data->resource_map, giblorb_method_FilePos, &res, giblorb_ID_Pict, image);
+ blorb_error = giblorb_load_resource(glk_data->resource_map, giblorb_method_FilePos, &resource, giblorb_ID_Pict, image);
if(blorb_error != giblorb_err_None) {
WARNING_S( "Error loading resource", giblorb_get_error_message(blorb_error) );
- return FALSE;
+ return NULL;
}
- if(width == NULL && height == NULL) {
- /* No size requested, don't bother loading the image */
- giblorb_unload_chunk(glk_data->resource_map, image);
- return TRUE;
- }
+ struct image_info *info = g_new0(struct image_info, 1);
+ info->resource_number = image;
/* Load the resource */
GdkPixbufLoader *loader = gdk_pixbuf_loader_new();
g_signal_connect( loader, "size-prepared", G_CALLBACK(on_size_prepared), info );
- glk_stream_set_position(glk_data->resource_file, res.data.startpos, seekmode_Start);
+ g_signal_connect( loader, "closed", G_CALLBACK(on_pixbuf_closed), NULL );
+
+ /* Scale image if necessary */
+ if(width > 0 && height > 0) {
+ gdk_pixbuf_loader_set_size(loader, width, height);
+ info->scaled = TRUE;
+ }
+
+ glk_stream_set_position(glk_data->resource_file, resource.data.startpos, seekmode_Start);
buffer = g_malloc( BUFFER_SIZE * sizeof(guchar) );
guint32 total_read = 0;
- size_determined = FALSE;
- while(total_read < res.length && !size_determined) {
+ image_loaded = FALSE;
+ while(total_read < resource.length && !image_loaded) {
guint32 num_read = glk_get_buffer_stream(glk_data->resource_file, (char *) buffer, BUFFER_SIZE);
if( !gdk_pixbuf_loader_write(loader, buffer, MIN(BUFFER_SIZE, num_read), &pixbuf_error) ) {
giblorb_unload_chunk(glk_data->resource_map, image);
gdk_pixbuf_loader_close(loader, &pixbuf_error);
g_free(buffer);
- return FALSE;
+ return NULL;
}
total_read += num_read;
}
- giblorb_unload_chunk(glk_data->resource_map, image);
gdk_pixbuf_loader_close(loader, &pixbuf_error);
+ giblorb_unload_chunk(glk_data->resource_map, resource.chunknum);
g_free(buffer);
- /* Determine the image dimensions */
- if(!size_determined) {
- WARNING("Cannot read image size: file data trimmed?");
- g_free(info);
- return FALSE;
+ /* Wait for the PixbufLoader to finish loading the image */
+ g_mutex_lock(glk_data->resource_lock);
+ while(!image_loaded) {
+ g_cond_wait(glk_data->resource_loaded, glk_data->resource_lock);
}
-
- if(width != NULL)
- *width = info->width;
- if(height != NULL)
- *height =info->height;
- g_free(info);
-
- //printf("size loaded: %d x %d\n", (int) *width, (int) *height);
-
- return TRUE;
+ g_mutex_unlock(glk_data->resource_lock);
+
+ /* Store the image in the cache */
+ if( g_slist_length(glk_data->image_cache) >= IMAGE_CACHE_MAX_NUM ) {
+ printf("Cache size exceeded\n");
+ struct image_info *head = (struct image_info*) glk_data->image_cache->data;
+ gdk_pixbuf_unref(head->pixbuf);
+ g_free(head);
+ glk_data->image_cache = g_slist_remove_link(glk_data->image_cache, glk_data->image_cache);
+ }
+ printf("Loading pixbuf\n");
+ info->pixbuf = gdk_pixbuf_loader_get_pixbuf(loader);
+ info->width = gdk_pixbuf_get_width(info->pixbuf);
+ info->height = gdk_pixbuf_get_height(info->pixbuf);
+ printf("Caching pixbuf\n");
+ glk_data->image_cache = g_slist_prepend(glk_data->image_cache, info);
+
+ g_object_unref(loader);
+ return info;
}
void
on_size_prepared(GdkPixbufLoader *loader, gint width, gint height, struct image_info *info)
{
+ ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
+
+ g_mutex_lock(glk_data->resource_lock);
info->width = width;
info->height = height;
size_determined = TRUE;
+ g_cond_broadcast(glk_data->resource_info_available);
+ g_mutex_unlock(glk_data->resource_lock);
+}
+
+void
+on_pixbuf_closed(GdkPixbufLoader *loader, gpointer data)
+{
+ gdk_threads_enter();
+
+ ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
+
+ g_mutex_lock(glk_data->resource_lock);
+ image_loaded = TRUE;
+ g_cond_broadcast(glk_data->resource_loaded);
+ g_mutex_unlock(glk_data->resource_lock);
+
+ gdk_threads_leave();
}
+
void
-on_graphics_size_allocate(GtkWidget *widget, GtkAllocation *allocation, winid_t *win)
+clear_image_cache(struct image_info *data, gpointer user_data)
+{
+ gdk_pixbuf_unref(data->pixbuf);
+ g_free(data);
+}
+
+static struct image_info*
+image_cache_find(struct image_info* to_find)
+{
+ printf("Finding image %d\n", to_find->resource_number);
+ ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
+ GSList *link = glk_data->image_cache;
+
+ /* Empty cache */
+ if(link == NULL) {
+ printf("Cache is empty\n");
+ return NULL;
+ }
+
+ /* Iterate over the cache to find the correct image and size */
+ do {
+ struct image_info *info = (struct image_info*) link->data;
+ printf("Examining cache entry %d\n", info->resource_number);
+ if(info->resource_number == to_find->resource_number) {
+ /* Check size: are we looking for a scaled version or the original one? */
+ if(to_find->scaled) {
+ if(info->width >= to_find->width && info->height >= to_find->height) {
+ return info; /* Found a good enough match */
+ }
+ } else {
+ if(!info->scaled) {
+ printf("Cache hit\n");
+ return info; /* Found a match */
+ }
+ }
+ }
+ } while( (link = g_slist_next(link)) );
+
+ return NULL; /* No match found */
+}
+
+glui32
+glk_image_get_info(glui32 image, glui32 *width, glui32 *height)
{
- printf("size allocated: %dx%d\n", allocation->width, allocation->height);
+ printf("get_info(%d)\n", image);
+ struct image_info *to_find = g_new0(struct image_info, 1);
+ struct image_info *found;
+ to_find->resource_number = image;
+ to_find->scaled = FALSE; /* we want the original image size */
+
+ if( !(found = image_cache_find(to_find)) ) {
+ printf("Cache miss for %d\n", image);
+ found = load_image_in_cache(image, 0, 0);
+ if(found == NULL)
+ return FALSE;
+ } else {
+ printf("Cache hit for %d\n", image);
+ }
+
+ if(width != NULL)
+ *width = found->width;
+ if(width != NULL)
+ *height = found->height;
+ return TRUE;
}
glui32
-glk_image_draw(winid_t win, glui32 image, glsi32 val1, glsi32 val2) {
+glk_image_draw(winid_t win, glui32 image, glsi32 val1, glsi32 val2)
+{
+ printf("image_draw(%d)\n", image);
VALID_WINDOW(win, return FALSE);
g_return_val_if_fail(win->type == wintype_Graphics, FALSE);
- printf("Drawing image %d\n", (int)image);
- ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
- giblorb_result_t res;
- giblorb_err_t blorb_error = 0;
- GError *pixbuf_error = NULL;
- struct image_info *info = g_new0(struct image_info, 1);
- info->resource_number = image;
- guchar *buffer;
+ struct image_info *to_find = g_new0(struct image_info, 1);
+ struct image_info *info;
GdkPixmap *canvas;
- //printf("glk_image_get_info(%d)\n", image);
-
/* Lookup the proper resource */
- blorb_error = giblorb_load_resource(glk_data->resource_map, giblorb_method_FilePos, &res, giblorb_ID_Pict, image);
- if(blorb_error != giblorb_err_None) {
- WARNING_S( "Error loading resource", giblorb_get_error_message(blorb_error) );
+ to_find->resource_number = image;
+ to_find->scaled = FALSE; /* we want the original image size */
+
+ if( !(info = image_cache_find(to_find)) ) {
+ info = load_image_in_cache(image, 0, 0);
+ if(info == NULL)
+ return FALSE;
+ }
+
+ gdk_threads_enter();
+
+ gtk_image_get_pixmap( GTK_IMAGE(win->widget), &canvas, NULL );
+ if(canvas == NULL) {
+ WARNING("Could not get pixmap");
return FALSE;
}
- /* Load the resource */
- GdkPixbufLoader *loader = gdk_pixbuf_loader_new();
- glk_stream_set_position(glk_data->resource_file, res.data.startpos, seekmode_Start);
- buffer = g_malloc( BUFFER_SIZE * sizeof(guchar) );
+ printf("image info: %d x %d, scaled=%d, pixbufaddr=%d\n", info->width, info->height, (int)info->scaled, (int)info->pixbuf);
+ gdk_draw_pixbuf( GDK_DRAWABLE(canvas), NULL, info->pixbuf, 0, 0, val1, val2, -1, -1, GDK_RGB_DITHER_NONE, 0, 0 );
- guint32 total_read = 0;
- while(total_read < res.length) {
- guint32 num_read = glk_get_buffer_stream(glk_data->resource_file, (char *) buffer, BUFFER_SIZE);
+ /* Update the screen */
+ gtk_widget_queue_draw(win->widget);
- if( !gdk_pixbuf_loader_write(loader, buffer, MIN(BUFFER_SIZE, num_read), &pixbuf_error) ) {
- WARNING_S("Cannot read image", pixbuf_error->message);
- giblorb_unload_chunk(glk_data->resource_map, image);
- gdk_pixbuf_loader_close(loader, &pixbuf_error);
- g_free(buffer);
- return FALSE;
- }
+ gdk_threads_leave();
- total_read += num_read;
+ return TRUE;
+}
+
+
+glui32
+glk_image_draw_scaled(winid_t win, glui32 image, glsi32 val1, glsi32 val2, glui32 width, glui32 height)
+{
+ VALID_WINDOW(win, return FALSE);
+ g_return_val_if_fail(win->type == wintype_Graphics, FALSE);
+
+ ChimaraGlkPrivate *glk_data = g_private_get(glk_data_key);
+ struct image_info *to_find = g_new0(struct image_info, 1);
+ struct image_info *info;
+ struct image_info *scaled_info;
+ GdkPixmap *canvas;
+
+ /* Lookup the proper resource */
+ to_find->resource_number = image;
+ to_find->scaled = TRUE; /* any image size equal or larger than requested will do */
+
+ if( !(info = image_cache_find(to_find)) ) {
+ info = load_image_in_cache(image, width, height);
+ if(info == NULL)
+ return FALSE;
}
- giblorb_unload_chunk(glk_data->resource_map, image);
- g_free(buffer);
+
+ gdk_threads_enter();
gtk_image_get_pixmap( GTK_IMAGE(win->widget), &canvas, NULL );
if(canvas == NULL) {
WARNING("Could not get pixmap");
- gdk_pixbuf_loader_close(loader, &pixbuf_error);
return FALSE;
}
- GdkPixbuf *pixbuf = gdk_pixbuf_loader_get_pixbuf(loader);
- if(pixbuf == NULL) {
- WARNING("Could not read image");
- gdk_pixbuf_loader_close(loader, &pixbuf_error);
- return FALSE;
+ /* Scale the image if necessary */
+ if(info->width != width || info->height != height) {
+ GdkPixbuf *scaled = gdk_pixbuf_scale_simple(info->pixbuf, width, height, GDK_INTERP_BILINEAR);
+
+ /* Add the scaled image into the image cache */
+ scaled_info = g_new0(struct image_info, 1);
+ scaled_info->resource_number = info->resource_number;
+ scaled_info->width = gdk_pixbuf_get_width(scaled);
+ scaled_info->height = gdk_pixbuf_get_width(scaled);
+ scaled_info->pixbuf = scaled;
+ scaled_info->scaled = TRUE;
+ glk_data->image_cache = g_slist_prepend(glk_data->image_cache, scaled_info);
+
+ /* Continue working with the scaled version */
+ info = scaled_info;
}
- gdk_draw_pixbuf( GDK_DRAWABLE(canvas), NULL, pixbuf, 0, 0, val1, val2, -1, -1, GDK_RGB_DITHER_NONE, 0, 0 );
- gdk_pixbuf_loader_close(loader, &pixbuf_error);
+ gdk_draw_pixbuf( GDK_DRAWABLE(canvas), NULL, info->pixbuf, 0, 0, val1, val2, -1, -1, GDK_RGB_DITHER_NONE, 0, 0 );
/* Update the screen */
gtk_widget_queue_draw(win->widget);
- return TRUE;
-}
-glui32
-glk_image_draw_scaled(winid_t win, glui32 image, glsi32 val1, glsi32 val2, glui32 width, glui32 height)
-{
+ gdk_threads_leave();
+
return TRUE;
}
VALID_WINDOW(win, return);
g_return_if_fail(win->type == wintype_Graphics);
+
+ gdk_threads_enter();
+
GdkPixmap *map;
gtk_image_get_pixmap( GTK_IMAGE(win->widget), &map, NULL );
gdk_draw_rectangle( GDK_DRAWABLE(map), win->widget->style->white_gc, TRUE, left, top, width, height);
gtk_widget_queue_draw(win->widget);
+
+ gdk_threads_leave();
}
void
glk_window_erase_rect(winid_t win, glsi32 left, glsi32 top, glui32 width, glui32 height)
{
- printf("erasing rect: %d %d %d %d\n", left, top, width, height);
glk_window_fill_rect(win, win->background_color, left, top, width, height);
}
void glk_window_flow_break(winid_t win)
{
}
+
+/*** Called when the graphics window is resized. Resize the backing pixmap if necessary ***/
+void
+on_graphics_size_allocate(GtkWidget *widget, GtkAllocation *allocation, winid_t win)
+{
+ GdkPixmap *oldmap;
+ gtk_image_get_pixmap( GTK_IMAGE(widget), &oldmap, NULL );
+ gint oldwidth = 0;
+ gint oldheight = 0;
+
+ /* Determine whether a pixmap exists with the correct size */
+ gboolean needs_resize = FALSE;
+ if(oldmap == NULL)
+ needs_resize = TRUE;
+ else {
+ gdk_drawable_get_size( GDK_DRAWABLE(oldmap), &oldwidth, &oldheight );
+ if(oldwidth != allocation->width || oldheight != allocation->height)
+ needs_resize = TRUE;
+ }
+
+ if(needs_resize) {
+ /* Create a new pixmap */
+ GdkPixmap *newmap = gdk_pixmap_new(widget->window, allocation->width, allocation->height, -1);
+ gdk_draw_rectangle( GDK_DRAWABLE(newmap), widget->style->white_gc, TRUE, 0, 0, allocation->width, allocation->height);
+
+ /* Copy the contents of the old pixmap */
+ if(oldmap != NULL)
+ gdk_draw_drawable( GDK_DRAWABLE(newmap), widget->style->white_gc, GDK_DRAWABLE(oldmap), 0, 0, 0, 0, oldwidth, oldheight);
+
+ /* Use the new pixmap */
+ gtk_image_set_from_pixmap( GTK_IMAGE(widget), newmap, NULL );
+ g_object_unref(newmap);
+ }
+}
+
projects / rodin / chimara.git / blobdiff