Trim trailing white spaces.
[geeqie.git] / src / pixbuf-renderer.c
index 2021a1f..688a480 100644 (file)
 #include "main.h"
 #include "pixbuf-renderer.h"
 #include "renderer-tiles.h"
+#include "renderer-clutter.h"
 
 #include "intl.h"
 #include "layout.h"
 
 #include <gtk/gtk.h>
 
-
 /* comment this out if not using this from within Geeqie
  * defining GQ_BUILD does these things:
  *   - Sets the shift-click scroller pixbuf to a nice icon instead of a black box
@@ -120,12 +120,6 @@ static void pixbuf_renderer_set_property(GObject *object, guint prop_id,
                                         const GValue *value, GParamSpec *pspec);
 static void pixbuf_renderer_get_property(GObject *object, guint prop_id,
                                         GValue *value, GParamSpec *pspec);
-#if GTK_CHECK_VERSION(3,0,0)
-static gboolean pixbuf_renderer_draw(GtkWidget *widget, cairo_t *cr);
-#else
-static gboolean pixbuf_renderer_expose(GtkWidget *widget, GdkEventExpose *event);
-#endif
-
 static void pr_scroller_timer_set(PixbufRenderer *pr, gboolean start);
 
 
@@ -136,7 +130,6 @@ static void pr_zoom_sync(PixbufRenderer *pr, gdouble zoom,
 
 static void pr_signals_connect(PixbufRenderer *pr);
 static void pr_size_cb(GtkWidget *widget, GtkAllocation *allocation, gpointer data);
-static void pixbuf_renderer_paint(PixbufRenderer *pr, GdkRectangle *area);
 static void pr_stereo_temp_disable(PixbufRenderer *pr, gboolean disable);
 
 
@@ -176,7 +169,6 @@ GType pixbuf_renderer_get_type(void)
 static void pixbuf_renderer_class_init(PixbufRendererClass *class)
 {
        GObjectClass *gobject_class = G_OBJECT_CLASS(class);
-       GtkWidgetClass *widget_class = GTK_WIDGET_CLASS(class);
 
        parent_class = g_type_class_peek_parent(class);
 
@@ -185,12 +177,6 @@ static void pixbuf_renderer_class_init(PixbufRendererClass *class)
 
        gobject_class->finalize = pixbuf_renderer_finalize;
 
-#if GTK_CHECK_VERSION(3,0,0)
-       widget_class->draw = pixbuf_renderer_draw;
-#else
-       widget_class->expose_event = pixbuf_renderer_expose;
-#endif
-
        g_object_class_install_property(gobject_class,
                                        PROP_ZOOM_MIN,
                                        g_param_spec_double("zoom_min",
@@ -393,6 +379,20 @@ static void pixbuf_renderer_class_init(PixbufRendererClass *class)
                             G_TYPE_NONE, 0);
 }
 
+static RendererFuncs *pr_backend_renderer_new(PixbufRenderer *pr)
+{
+       if (options->image.use_clutter_renderer)
+               {
+#ifdef HAVE_CLUTTER
+               return renderer_clutter_new(pr);
+#else
+               DEBUG_0("Geeqie is built without clutter renderer support");
+#endif
+               }
+       return renderer_tiles_new(pr);
+}
+
+
 static void pixbuf_renderer_init(PixbufRenderer *pr)
 {
        GtkWidget *box;
@@ -426,11 +426,12 @@ static void pixbuf_renderer_init(PixbufRenderer *pr)
        
        pr->stereo_mode = PR_STEREO_NONE;
        
-       pr->renderer = (void *)renderer_tiles_new(pr);
+       pr->renderer = pr_backend_renderer_new(pr);
        
        pr->renderer2 = NULL;
 
        gtk_widget_set_double_buffered(box, FALSE);
+       gtk_widget_set_app_paintable(box, TRUE);
        g_signal_connect_after(G_OBJECT(box), "size_allocate",
                               G_CALLBACK(pr_size_cb), pr);
 
@@ -585,61 +586,6 @@ static void pixbuf_renderer_get_property(GObject *object, guint prop_id,
                }
 }
 
-#if GTK_CHECK_VERSION(3,0,0)
-
-static gboolean pixbuf_renderer_draw(GtkWidget *widget, cairo_t *cr)
-{
-       if (gtk_widget_is_drawable(widget))
-               {
-               if (gtk_widget_get_has_window(widget))
-                       {
-                       GdkRectangle area;
-                       if (gdk_cairo_get_clip_rectangle(cr, &area))
-                               {
-                               pixbuf_renderer_paint(PIXBUF_RENDERER(widget), &area);
-                               }
-                       }
-               }
-
-       return FALSE;
-}
-
-#else
-static gboolean pixbuf_renderer_expose(GtkWidget *widget, GdkEventExpose *event)
-{
-#if GTK_CHECK_VERSION(2,20,0)
-       if (gtk_widget_is_drawable(widget))
-#else
-       if (GTK_WIDGET_DRAWABLE(widget))
-#endif
-               {
-#if GTK_CHECK_VERSION(2,20,0)
-               if (gtk_widget_get_has_window(widget))
-#else
-               if (!GTK_WIDGET_NO_WINDOW(widget))
-#endif
-                       {
-                       if (event->window != gtk_widget_get_window(widget))
-                               {
-                               GdkRectangle area;
-
-                               gdk_window_get_position(event->window, &area.x, &area.y);
-                               area.x += event->area.x;
-                               area.y += event->area.y;
-                               area.width = event->area.width;
-                               area.height = event->area.height;
-                               pixbuf_renderer_paint(PIXBUF_RENDERER(widget), &area);
-                               }
-                       else
-                               {
-                               pixbuf_renderer_paint(PIXBUF_RENDERER(widget), &event->area);
-                               }
-                       }
-               }
-
-       return FALSE;
-}
-#endif
 
 /*
  *-------------------------------------------------------------------
@@ -942,12 +888,6 @@ static void pr_scroller_stop(PixbufRenderer *pr)
  *-------------------------------------------------------------------
  */
 
-static void pr_border_clear(PixbufRenderer *pr)
-{
-       pr->renderer->border_clear(pr->renderer);
-       if (pr->renderer2) pr->renderer2->border_clear(pr->renderer2);
-}
-
 void pixbuf_renderer_set_color(PixbufRenderer *pr, GdkColor *color)
 {
        GtkStyle *style;
@@ -973,21 +913,8 @@ void pixbuf_renderer_set_color(PixbufRenderer *pr, GdkColor *color)
 
        gtk_widget_set_style(widget, style);
 
-#if GTK_CHECK_VERSION(2,20,0)
-       if (gtk_widget_get_visible(widget)) pr_border_clear(pr);
-#else
-       if (GTK_WIDGET_VISIBLE(widget)) pr_border_clear(pr);
-#endif
-}
-
-static void pr_redraw(PixbufRenderer *pr, gboolean new_data)
-{
-       pr->renderer->queue_clear(pr->renderer);
-       pr->renderer->redraw(pr->renderer, 0, 0, pr->width, pr->height, TRUE, TILE_RENDER_ALL, new_data, FALSE);
-       if (pr->renderer2) {
-               pr->renderer2->queue_clear(pr->renderer2);
-               pr->renderer2->redraw(pr->renderer2, 0, 0, pr->width, pr->height, TRUE, TILE_RENDER_ALL, new_data, FALSE);
-       }
+       pr->renderer->update_viewport(pr->renderer);
+       if (pr->renderer2) pr->renderer2->update_viewport(pr->renderer2);
 }
 
 /*
@@ -1256,8 +1183,8 @@ void pixbuf_renderer_set_tiles(PixbufRenderer *pr, gint width, gint height,
        pr->func_tile_dispose = func_dispose;
        pr->func_tile_data = user_data;
 
+       pr_stereo_temp_disable(pr, TRUE);
        pr_zoom_sync(pr, zoom, PR_ZOOM_FORCE | PR_ZOOM_NEW, 0, 0);
-       pr_redraw(pr, TRUE);
 }
 
 void pixbuf_renderer_set_tiles_size(PixbufRenderer *pr, gint width, gint height)
@@ -1335,9 +1262,6 @@ static void pr_zoom_adjust_real(PixbufRenderer *pr, gdouble increment,
 
 static void pr_update_signal(PixbufRenderer *pr)
 {
-#if 0
-       log_printf("FIXME: send updated signal\n");
-#endif
        DEBUG_1("%s pixbuf renderer updated - started drawing %p, img: %dx%d", get_exec_time(), pr, pr->image_width, pr->image_height);
        pr->debug_updated = TRUE;
 }
@@ -1571,7 +1495,7 @@ static void pixbuf_renderer_sync_scroll_center(PixbufRenderer *pr)
        gint src_x, src_y;
        if (!pr->width || !pr->height) return;
 
-       /* 
+       /*
         * Update norm_center only if the image is bigger than the window.
         * With this condition the stored center survives also a temporary display
         * of the "broken image" icon.
@@ -1665,15 +1589,12 @@ static gboolean pr_size_clamp(PixbufRenderer *pr)
 }
 
 static gboolean pr_zoom_clamp(PixbufRenderer *pr, gdouble zoom,
-                             PrZoomFlags flags, gboolean *redrawn)
+                             PrZoomFlags flags)
 {
        gint w, h;
        gdouble scale;
-       gboolean invalid;
        gboolean force = !!(flags & PR_ZOOM_FORCE);
        gboolean new = !!(flags & PR_ZOOM_NEW);
-       gboolean invalidate = !!(flags & PR_ZOOM_INVALIDATE);
-       gboolean lazy = !!(flags & PR_ZOOM_LAZY);
 
        zoom = CLAMP(zoom, pr->zoom_min, pr->zoom_max);
 
@@ -1757,23 +1678,11 @@ static gboolean pr_zoom_clamp(PixbufRenderer *pr, gdouble zoom,
                h = h * scale * pr->aspect_ratio;
                }
 
-       invalid = (pr->width != w || pr->height != h);
-
        pr->zoom = zoom;
        pr->width = w;
        pr->height = h;
        pr->scale = scale;
 
-       if (invalidate || invalid)
-               {
-               pr->renderer->invalidate_all(pr->renderer);
-               if (pr->renderer2) pr->renderer2->invalidate_all(pr->renderer2);
-               if (!lazy) pr_redraw(pr, TRUE);
-               }
-       if (redrawn) *redrawn = (invalidate || invalid);
-
-       pixbuf_renderer_sync_scroll_center(pr);
-
        return TRUE;
 }
 
@@ -1782,9 +1691,6 @@ static void pr_zoom_sync(PixbufRenderer *pr, gdouble zoom,
 {
        gdouble old_scale;
        gint old_cx, old_cy;
-       gboolean clamped;
-       gboolean sized;
-       gboolean redrawn = FALSE;
        gboolean center_point = !!(flags & PR_ZOOM_CENTER);
        gboolean force = !!(flags & PR_ZOOM_FORCE);
        gboolean new = !!(flags & PR_ZOOM_NEW);
@@ -1792,7 +1698,7 @@ static void pr_zoom_sync(PixbufRenderer *pr, gdouble zoom,
        PrZoomFlags clamp_flags = flags;
        gdouble old_center_x = pr->norm_center_x;
        gdouble old_center_y = pr->norm_center_y;
-       
+
        old_scale = pr->scale;
        if (center_point)
                {
@@ -1809,11 +1715,10 @@ static void pr_zoom_sync(PixbufRenderer *pr, gdouble zoom,
                }
 
        if (force) clamp_flags |= PR_ZOOM_INVALIDATE;
-       if (lazy) clamp_flags |= PR_ZOOM_LAZY;
-       if (!pr_zoom_clamp(pr, zoom, clamp_flags, &redrawn)) return;
+       if (!pr_zoom_clamp(pr, zoom, clamp_flags)) return;
 
-       clamped = pr_size_clamp(pr);
-       sized = pr_parent_window_resize(pr, pr->width, pr->height);
+       (void) pr_size_clamp(pr);
+       (void) pr_parent_window_resize(pr, pr->width, pr->height);
 
        if (force && new)
                {
@@ -1854,21 +1759,8 @@ static void pr_zoom_sync(PixbufRenderer *pr, gdouble zoom,
 
        pr_scroll_clamp(pr);
 
-       /* If the window was not sized, redraw the image - we know there will be no size/expose signal.
-        * But even if a size is claimed, there is no guarantee that the window manager will allow it,
-        * so redraw the window anyway :/
-        */
-       if (sized || clamped) pr_border_clear(pr);
-       
-       if (lazy)
-               {
-               pr->renderer->queue_clear(pr->renderer);
-               if (pr->renderer2) pr->renderer2->queue_clear(pr->renderer2);
-               }
-       else
-               {
-               pr_redraw(pr, redrawn);
-               }
+       pr->renderer->update_zoom(pr->renderer, lazy);
+       if (pr->renderer2) pr->renderer2->update_zoom(pr->renderer2, lazy);
 
        pr_scroll_notify_signal(pr);
        pr_zoom_signal(pr);
@@ -1910,15 +1802,22 @@ static void pr_size_sync(PixbufRenderer *pr, gint new_width, gint new_height)
        if (pr->zoom == 0.0)
                {
                gdouble old_scale = pr->scale;
-               pr_zoom_clamp(pr, 0.0, PR_ZOOM_FORCE, NULL);
+               pr_zoom_clamp(pr, 0.0, PR_ZOOM_FORCE);
                zoom_changed = (old_scale != pr->scale);
                }
 
        pr_size_clamp(pr);
        pr_scroll_clamp(pr);
 
-       pr->renderer->update_sizes(pr->renderer);
-       if (pr->renderer2) pr->renderer2->update_sizes(pr->renderer2);
+       if (zoom_changed)
+               {
+               pr->renderer->update_zoom(pr->renderer, FALSE);
+               if (pr->renderer2) pr->renderer2->update_zoom(pr->renderer2, FALSE);
+               }
+
+       pr->renderer->update_viewport(pr->renderer);
+       if (pr->renderer2) pr->renderer2->update_viewport(pr->renderer2);
+
 
        /* ensure scroller remains visible */
        if (pr->scroller_overlay != -1)
@@ -1954,8 +1853,6 @@ static void pr_size_sync(PixbufRenderer *pr, gint new_width, gint new_height)
                        }
                }
 
-       pr_border_clear(pr);
-
        pr_scroll_notify_signal(pr);
        if (zoom_changed) pr_zoom_signal(pr);
        pr_update_signal(pr);
@@ -1968,19 +1865,6 @@ static void pr_size_cb(GtkWidget *widget, GtkAllocation *allocation, gpointer da
        pr_size_sync(pr, allocation->width, allocation->height);
 }
 
-static void pixbuf_renderer_paint(PixbufRenderer *pr, GdkRectangle *area)
-{
-       gint x, y;
-
-       pr->renderer->redraw(pr->renderer, area->x, area->y, area->width, area->height,
-                             FALSE, TILE_RENDER_ALL, FALSE, FALSE);
-       if (pr->renderer2) 
-               {
-               pr->renderer2->redraw(pr->renderer2, area->x, area->y, area->width, area->height,
-                             FALSE, TILE_RENDER_ALL, FALSE, FALSE);
-               }
-}
-
 /*
  *-------------------------------------------------------------------
  * scrolling
@@ -2167,11 +2051,7 @@ static gboolean pr_mouse_press_cb(GtkWidget *widget, GdkEventButton *bevent, gpo
                }
 
        parent = gtk_widget_get_parent(widget);
-#if GTK_CHECK_VERSION(2,20,0)
        if (widget && gtk_widget_get_can_focus(parent))
-#else
-       if (widget && GTK_WIDGET_CAN_FOCUS(parent))
-#endif
                {
                gtk_widget_grab_focus(parent);
                }
@@ -2191,11 +2071,7 @@ static gboolean pr_mouse_release_cb(GtkWidget *widget, GdkEventButton *bevent, g
                return TRUE;
                }
 
-#if GTK_CHECK_VERSION(2,20,0)
        if (gdk_pointer_is_grabbed() && gtk_widget_has_grab(GTK_WIDGET(pr)))
-#else
-       if (gdk_pointer_is_grabbed() && GTK_WIDGET_HAS_GRAB(pr))
-#endif
                {
                gtk_grab_remove(widget);
                gdk_pointer_ungrab(bevent->time);
@@ -2259,7 +2135,7 @@ static void pr_signals_connect(PixbufRenderer *pr)
                         G_CALLBACK(pr_leave_notify_cb), pr);
 
        gtk_widget_set_events(GTK_WIDGET(pr), GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK |
-                                             GDK_BUTTON_RELEASE_MASK | GDK_BUTTON_PRESS_MASK |
+                                             GDK_BUTTON_RELEASE_MASK | GDK_BUTTON_PRESS_MASK | GDK_SCROLL_MASK |
                                              GDK_LEAVE_NOTIFY_MASK);
 
        g_signal_connect(G_OBJECT(pr), "drag_begin",
@@ -2341,7 +2217,7 @@ const double pr_dubois_matrix[3][6] = {
        { 0.456,  0.500,  0.176, -0.043, -0.088, -0.002},
        {-0.040, -0.038, -0.016,  0.378,  0.734, -0.018},
        {-0.015, -0.021, -0.005, -0.072, -0.113,  1.226}
-       }; 
+       };
 
 static void pr_create_anaglyph_dubois(GdkPixbuf *pixbuf, GdkPixbuf *right, gint x, gint y, gint w, gint h)
 {
@@ -2366,7 +2242,7 @@ static void pr_create_anaglyph_dubois(GdkPixbuf *pixbuf, GdkPixbuf *right, gint
                for (j = 0; j < w; j++)
                        {
                        double res[3];
-                       for (k = 0; k < 3; k++) 
+                       for (k = 0; k < 3; k++)
                                {
                                const double *m = pr_dubois_matrix[k];
                                res[k] = sp[0] * m[0] + sp[1] * m[1] + sp[2] * m[2] + dp[0] * m[3] + dp[1] * m[4] + dp[2] * m[5];
@@ -2410,12 +2286,12 @@ static void pr_pixbuf_size_sync(PixbufRenderer *pr)
                case EXIF_ORIENTATION_LEFT_BOTTOM:
                        pr->image_width = gdk_pixbuf_get_height(pr->pixbuf);
                        pr->image_height = gdk_pixbuf_get_width(pr->pixbuf);
-                       if (pr->stereo_data == STEREO_PIXBUF_SBS) 
+                       if (pr->stereo_data == STEREO_PIXBUF_SBS)
                                {
                                pr->image_height /= 2;
                                pr->stereo_pixbuf_offset_right = pr->image_height;
                                }
-                       else if (pr->stereo_data == STEREO_PIXBUF_CROSS) 
+                       else if (pr->stereo_data == STEREO_PIXBUF_CROSS)
                                {
                                pr->image_height /= 2;
                                pr->stereo_pixbuf_offset_left = pr->image_height;
@@ -2425,12 +2301,12 @@ static void pr_pixbuf_size_sync(PixbufRenderer *pr)
                default:
                        pr->image_width = gdk_pixbuf_get_width(pr->pixbuf);
                        pr->image_height = gdk_pixbuf_get_height(pr->pixbuf);
-                       if (pr->stereo_data == STEREO_PIXBUF_SBS) 
+                       if (pr->stereo_data == STEREO_PIXBUF_SBS)
                                {
                                pr->image_width /= 2;
                                pr->stereo_pixbuf_offset_right = pr->image_width;
                                }
-                       else if (pr->stereo_data == STEREO_PIXBUF_CROSS) 
+                       else if (pr->stereo_data == STEREO_PIXBUF_CROSS)
                                {
                                pr->image_width /= 2;
                                pr->stereo_pixbuf_offset_left = pr->image_width;
@@ -2446,8 +2322,6 @@ static void pr_set_pixbuf(PixbufRenderer *pr, GdkPixbuf *pixbuf, gdouble zoom, P
 
        if (!pr->pixbuf)
                {
-               GtkWidget *box;
-
                /* no pixbuf so just clear the window */
                pr->image_width = 0;
                pr->image_height = 0;
@@ -2455,33 +2329,23 @@ static void pr_set_pixbuf(PixbufRenderer *pr, GdkPixbuf *pixbuf, gdouble zoom, P
                pr->zoom = zoom; /* don't throw away the zoom value, it is set by pixbuf_renderer_move, among others,
                                    and used for pixbuf_renderer_zoom_get */
 
-               box = GTK_WIDGET(pr);
-
-#if GTK_CHECK_VERSION(2,20,0)
-               if (gtk_widget_get_realized(box))
-#else
-               if (GTK_WIDGET_REALIZED(box))
-#endif
-                       {
-#if !GTK_CHECK_VERSION(3,0,0)
-                       gdk_window_clear(gtk_widget_get_window(box));
-#endif
-                       pr->renderer->overlay_draw(pr->renderer, 0, 0, pr->viewport_width, pr->viewport_height);
-                       if (pr->renderer2) pr->renderer2->overlay_draw(pr->renderer2, 0, 0, pr->viewport_width, pr->viewport_height);
-                       }
+               pr->renderer->update_pixbuf(pr->renderer, flags & PR_ZOOM_LAZY);
+               if (pr->renderer2) pr->renderer2->update_pixbuf(pr->renderer2, flags & PR_ZOOM_LAZY);
 
                pr_update_signal(pr);
 
                return;
                }
 
-       if (pr->stereo_mode & PR_STEREO_TEMP_DISABLE) 
+       if (pr->stereo_mode & PR_STEREO_TEMP_DISABLE)
                {
                gint disable = !pr->pixbuf || ! pr->stereo_data;
                pr_stereo_temp_disable(pr, disable);
                }
 
        pr_pixbuf_size_sync(pr);
+       pr->renderer->update_pixbuf(pr->renderer, flags & PR_ZOOM_LAZY);
+       if (pr->renderer2) pr->renderer2->update_pixbuf(pr->renderer2, flags & PR_ZOOM_LAZY);
        pr_zoom_sync(pr, zoom, flags | PR_ZOOM_FORCE | PR_ZOOM_NEW, 0, 0);
 }
 
@@ -2535,15 +2399,19 @@ gint pixbuf_renderer_get_orientation(PixbufRenderer *pr)
 void pixbuf_renderer_set_stereo_data(PixbufRenderer *pr, StereoPixbufData stereo_data)
 {
        g_return_if_fail(IS_PIXBUF_RENDERER(pr));
+       if (pr->stereo_data == stereo_data) return;
+
 
        pr->stereo_data = stereo_data;
 
-       if (pr->stereo_mode & PR_STEREO_TEMP_DISABLE) 
+       if (pr->stereo_mode & PR_STEREO_TEMP_DISABLE)
                {
                gint disable = !pr->pixbuf || ! pr->stereo_data;
                pr_stereo_temp_disable(pr, disable);
                }
        pr_pixbuf_size_sync(pr);
+       pr->renderer->update_pixbuf(pr->renderer, FALSE);
+       if (pr->renderer2) pr->renderer2->update_pixbuf(pr->renderer2, FALSE);
        pr_zoom_sync(pr, pr->zoom, PR_ZOOM_FORCE, 0, 0);
 }
 
@@ -2609,7 +2477,6 @@ void pixbuf_renderer_move(PixbufRenderer *pr, PixbufRenderer *source)
                source->source_tiles = NULL;
 
                pr_zoom_sync(pr, source->zoom, PR_ZOOM_FORCE | PR_ZOOM_NEW, 0, 0);
-               pr_redraw(pr, TRUE);
                }
        else
                {
@@ -2619,8 +2486,61 @@ void pixbuf_renderer_move(PixbufRenderer *pr, PixbufRenderer *source)
        pr->scroll_reset = scroll_reset;
 
        pixbuf_renderer_set_pixbuf(source, NULL, source->zoom);
-//     pr_queue_clear(source);
-//     pr_tile_free_all(source);
+}
+
+void pixbuf_renderer_copy(PixbufRenderer *pr, PixbufRenderer *source)
+{
+       GObject *object;
+       PixbufRendererScrollResetType scroll_reset;
+
+       g_return_if_fail(IS_PIXBUF_RENDERER(pr));
+       g_return_if_fail(IS_PIXBUF_RENDERER(source));
+
+       if (pr == source) return;
+
+       object = G_OBJECT(pr);
+
+       g_object_set(object, "zoom_min", source->zoom_min, NULL);
+       g_object_set(object, "zoom_max", source->zoom_max, NULL);
+       g_object_set(object, "loading", source->loading, NULL);
+
+       pr->complete = source->complete;
+
+       pr->x_scroll = source->x_scroll;
+       pr->y_scroll = source->y_scroll;
+       pr->x_mouse  = source->x_mouse;
+       pr->y_mouse  = source->y_mouse;
+
+       scroll_reset = pr->scroll_reset;
+       pr->scroll_reset = PR_SCROLL_RESET_NOCHANGE;
+
+       pr->orientation = source->orientation;
+       pr->stereo_data = source->stereo_data;
+
+       if (source->source_tiles_enabled)
+               {
+               pr->source_tiles_enabled = source->source_tiles_enabled;
+               pr->source_tiles_cache_size = source->source_tiles_cache_size;
+               pr->source_tile_width = source->source_tile_width;
+               pr->source_tile_height = source->source_tile_height;
+               pr->image_width = source->image_width;
+               pr->image_height = source->image_height;
+
+               pr->func_tile_request = source->func_tile_request;
+               pr->func_tile_dispose = source->func_tile_dispose;
+               pr->func_tile_data = source->func_tile_data;
+
+               pr->source_tiles = source->source_tiles;
+               source->source_tiles = NULL;
+
+               pr_zoom_sync(pr, source->zoom, PR_ZOOM_FORCE | PR_ZOOM_NEW, 0, 0);
+               }
+       else
+               {
+               pixbuf_renderer_set_pixbuf(pr, source->pixbuf, source->zoom);
+               }
+
+       pr->scroll_reset = scroll_reset;
 }
 
 void pixbuf_renderer_area_changed(PixbufRenderer *pr, gint x, gint y, gint w, gint h)
@@ -2693,13 +2613,13 @@ void pixbuf_renderer_zoom_set_limits(PixbufRenderer *pr, gdouble min, gdouble ma
 
 static void pr_stereo_set(PixbufRenderer *pr)
 {
-       if (!pr->renderer) pr->renderer = (void *)renderer_tiles_new(pr);
+       if (!pr->renderer) pr->renderer = pr_backend_renderer_new(pr);
        
        pr->renderer->stereo_set(pr->renderer, pr->stereo_mode & ~PR_STEREO_MIRROR_RIGHT & ~PR_STEREO_FLIP_RIGHT);
        
        if (pr->stereo_mode & (PR_STEREO_HORIZ | PR_STEREO_VERT | PR_STEREO_FIXED))
                {
-               if (!pr->renderer2) pr->renderer2 = (void *)renderer_tiles_new(pr);
+               if (!pr->renderer2) pr->renderer2 = pr_backend_renderer_new(pr);
                pr->renderer2->stereo_set(pr->renderer2, (pr->stereo_mode & ~PR_STEREO_MIRROR_LEFT & ~PR_STEREO_FLIP_LEFT) | PR_STEREO_RIGHT);
                }
        else
@@ -2729,7 +2649,7 @@ void pixbuf_renderer_stereo_set(PixbufRenderer *pr, gint stereo_mode)
        
        pr_stereo_set(pr);
        
-       if (redraw) 
+       if (redraw)
                {
                pr_size_sync(pr, pr->window_width, pr->window_height); /* recalculate new viewport */
                pr_zoom_sync(pr, pr->zoom, PR_ZOOM_FORCE | PR_ZOOM_NEW, 0, 0);
@@ -2757,7 +2677,7 @@ static void pr_stereo_temp_disable(PixbufRenderer *pr, gboolean disable)
        pr->stereo_temp_disable = disable;
        if (disable)
                {
-               if (!pr->renderer) pr->renderer = (void *)renderer_tiles_new(pr);
+               if (!pr->renderer) pr->renderer = pr_backend_renderer_new(pr);
                pr->renderer->stereo_set(pr->renderer, PR_STEREO_NONE);
                if (pr->renderer2) pr->renderer2->free(pr->renderer2);
                pr->renderer2 = NULL;
@@ -2770,7 +2690,7 @@ static void pr_stereo_temp_disable(PixbufRenderer *pr, gboolean disable)
        pr_size_sync(pr, pr->window_width, pr->window_height); /* recalculate new viewport */
 }
 
-gboolean pixbuf_renderer_get_pixel_colors(PixbufRenderer *pr, gint x_pixel, gint y_pixel, 
+gboolean pixbuf_renderer_get_pixel_colors(PixbufRenderer *pr, gint x_pixel, gint y_pixel,
                                           gint *r_mouse, gint *g_mouse, gint *b_mouse)
 {
        GdkPixbuf *pb = pr->pixbuf;
@@ -2925,6 +2845,9 @@ gboolean pixbuf_renderer_get_virtual_rect(PixbufRenderer *pr, GdkRectangle *rect
 
 void pixbuf_renderer_set_size_early(PixbufRenderer *pr, guint width, guint height)
 {
+#if 0
+       /* FIXME: this function does not consider the image orientation,
+       so it probably only breaks something */
        gdouble zoom;
        gint w, h;
 
@@ -2939,6 +2862,7 @@ void pixbuf_renderer_set_size_early(PixbufRenderer *pr, guint width, guint heigh
 
        //pr->width = width;
        //pr->height = height;
+#endif
 }
 
 /* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */