Quick and hacky implementation of glk_draw_image_scaled().

City Of Secrects not playable with graphics!

git-svn-id: http://lassie.dyndns-server.com/svn/gargoyle-gtk@220 ddfedd41-794f-dd11-ae45-00112f111e67

diff --git a/libchimara/graphics.c b/libchimara/graphics.c
index 898c9dc32fa5b4f40d3f76b8815aa73d775ce51b..3d941457731723cb16e1ff2fa168027f17e282ff 100644 (file)
--- a/libchimara/graphics.c
+++ b/libchimara/graphics.c
@@ -196,7 +196,88 @@ on_pixbuf_closed(GdkPixbufLoader *loader, gpointer data)
 glui32
 glk_image_draw_scaled(winid_t win, glui32 image, glsi32 val1, glsi32 val2, glui32 width, glui32 height)
 {
-       glk_image_draw(win, image, val1, val2);
+       VALID_WINDOW(win, return FALSE);
+       g_return_val_if_fail(win->type == wintype_Graphics, FALSE);
+
+       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;
+       GdkPixmap *canvas;
+
+       /* 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) );
+               return FALSE;
+       }
+
+       /* Load the resource */
+       GdkPixbufLoader *loader = gdk_pixbuf_loader_new();
+       g_signal_connect( loader, "closed", G_CALLBACK(on_pixbuf_closed), NULL ); 
+       gdk_pixbuf_loader_set_size(loader, width, height);
+       glk_stream_set_position(glk_data->resource_file, res.data.startpos, seekmode_Start);
+       buffer = g_malloc( BUFFER_SIZE * sizeof(guchar) );
+
+       guint32 total_read = 0;
+       image_loaded = FALSE;
+       while(total_read < res.length) {
+               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) ) {
+                       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;
+               }
+
+               total_read += num_read;
+       }
+
+       if( !gdk_pixbuf_loader_close(loader, &pixbuf_error) ) {
+               WARNING_S("Cannot read image", pixbuf_error->message);
+               giblorb_unload_chunk(glk_data->resource_map, image);
+               g_free(buffer);
+               return FALSE;
+       }
+
+       if(!image_loaded) {
+               /* 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);
+               }
+               g_mutex_unlock(glk_data->resource_lock);
+       }
+
+       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");
+               return FALSE;
+       }
+
+       GdkPixbuf *pixbuf = gdk_pixbuf_loader_get_pixbuf(loader);
+       if(pixbuf == NULL) {
+               WARNING("Could not read image");
+               return FALSE;
+       }
+
+       gdk_draw_pixbuf( GDK_DRAWABLE(canvas), NULL, pixbuf, 0, 0, val1, val2, -1, -1, GDK_RGB_DITHER_NONE, 0, 0 );
+
+       /* Update the screen */
+       gtk_widget_queue_draw(win->widget);
+
+       gdk_threads_leave();
+
        return TRUE;
 }