[nautilus] canvas-item: Draw the selected icon surface as the drag surface

[Jasper St. Pierre <jstpierre src gnome org>]

commit 9ba38b7feab7d7bca27d61f3a07051f7d228934e
Author: Jasper St. Pierre <jstpierre mecheye net>
Date:   Wed Aug 7 05:53:38 2013 -0400

    canvas-item: Draw the selected icon surface as the drag surface

 libnautilus-private/nautilus-canvas-item.c |  139 +++++++++++++---------------
 1 files changed, 65 insertions(+), 74 deletions(-)
---
diff --git a/libnautilus-private/nautilus-canvas-item.c b/libnautilus-private/nautilus-canvas-item.c
index 009334b..4fc41a4 100644
--- a/libnautilus-private/nautilus-canvas-item.c
+++ b/libnautilus-private/nautilus-canvas-item.c
@@ -166,10 +166,6 @@ G_DEFINE_TYPE_WITH_CODE (NautilusCanvasItem, nautilus_canvas_item, EEL_TYPE_CANV
                                                nautilus_canvas_item_text_interface_init));
 
 /* private */
-static void     draw_label_text                      (NautilusCanvasItem        *item,
-                                                     cairo_t                       *cr,
-                                                     EelIRect                       icon_rect);
-static void     measure_label_text                   (NautilusCanvasItem        *item);
 static void     get_icon_rectangle            (NautilusCanvasItem        *item,
                                                 EelIRect                      *rect);
 static void     draw_pixbuf                          (GdkPixbuf                     *pixbuf,
@@ -182,10 +178,7 @@ static PangoLayout *get_label_layout                 (PangoLayout
 static gboolean hit_test_stretch_handle              (NautilusCanvasItem        *item,
                                                      EelIRect                       icon_rect,
                                                      GtkCornerType *corner);
-static void      draw_embedded_text                  (NautilusCanvasItem        *canvas_item,
-                                                      cairo_t                       *cr,
-                                                     int                            x,
-                                                     int                            y);
+;
 
 static void       nautilus_canvas_item_ensure_bounds_up_to_date (NautilusCanvasItem *canvas_item);
 
@@ -449,72 +442,6 @@ get_scaled_icon_size (NautilusCanvasItem *item,
                *height = (pixbuf == NULL) ? 0 : (gdk_pixbuf_get_height (pixbuf) / scale);
 }
 
-cairo_surface_t *
-nautilus_canvas_item_get_drag_surface (NautilusCanvasItem *item)
-{
-       cairo_surface_t *surface;
-       EelCanvas *canvas;
-       int width, height;
-       int pix_width, pix_height;
-       int item_offset_x, item_offset_y;
-       EelIRect icon_rect;
-       double item_x, item_y;
-       cairo_t *cr;
-       GtkStyleContext *context;
-       cairo_surface_t *drag_surface;
-       
-       g_return_val_if_fail (NAUTILUS_IS_CANVAS_ITEM (item), NULL);
-
-       canvas = EEL_CANVAS_ITEM (item)->canvas;
-       context = gtk_widget_get_style_context (GTK_WIDGET (canvas));
-
-       gtk_style_context_save (context);
-       gtk_style_context_add_class (context, "nautilus-canvas-item");
-
-       /* Assume we're updated so canvas item data is right */
-
-       /* Calculate the offset from the top-left corner of the
-          new image to the item position (where the pixmap is placed) */
-       eel_canvas_world_to_window (canvas,
-                                   item->details->x, item->details->y,
-                                   &item_x, &item_y);
-
-       item_offset_x = item_x - EEL_CANVAS_ITEM (item)->x1;
-       item_offset_y = item_y - EEL_CANVAS_ITEM (item)->y1;
-
-       /* Calculate the width of the item */
-       width = EEL_CANVAS_ITEM (item)->x2 - EEL_CANVAS_ITEM (item)->x1;
-       height = EEL_CANVAS_ITEM (item)->y2 - EEL_CANVAS_ITEM (item)->y1;
-
-        surface = gdk_window_create_similar_surface (gtk_widget_get_window (GTK_WIDGET (canvas)),
-                                                    CAIRO_CONTENT_COLOR_ALPHA,
-                                                    width, height);
-       cr = cairo_create (surface);
-
-       drag_surface = gdk_cairo_surface_create_from_pixbuf (item->details->pixbuf,
-                                                            gtk_widget_get_scale_factor (GTK_WIDGET 
(canvas)),
-                                                            gtk_widget_get_window (GTK_WIDGET (canvas)));
-       gtk_render_icon_surface (context, cr, drag_surface,
-                                item_offset_x, item_offset_y);
-       cairo_surface_destroy (drag_surface);
-
-       get_scaled_icon_size (item, &pix_width, &pix_height);
-
-       icon_rect.x0 = item_offset_x;
-       icon_rect.y0 = item_offset_y;
-       icon_rect.x1 = item_offset_x + pix_width;
-       icon_rect.y1 = item_offset_y + pix_height;
-
-       draw_embedded_text (item, cr,
-                           item_offset_x, item_offset_y);
-       draw_label_text (item, cr, icon_rect);
-       cairo_destroy (cr);
-
-       gtk_style_context_restore (context);
-
-       return surface;
-}
-
 void
 nautilus_canvas_item_set_image (NautilusCanvasItem *item,
                                GdkPixbuf *image)
@@ -1393,6 +1320,70 @@ draw_embedded_text (NautilusCanvasItem *item,
        cairo_restore (cr);
 }
 
+cairo_surface_t *
+nautilus_canvas_item_get_drag_surface (NautilusCanvasItem *item)
+{
+       cairo_surface_t *surface;
+       EelCanvas *canvas;
+       int width, height;
+       int pix_width, pix_height;
+       int item_offset_x, item_offset_y;
+       EelIRect icon_rect;
+       double item_x, item_y;
+       cairo_t *cr;
+       GtkStyleContext *context;
+       cairo_surface_t *drag_surface;
+
+       g_return_val_if_fail (NAUTILUS_IS_CANVAS_ITEM (item), NULL);
+
+       canvas = EEL_CANVAS_ITEM (item)->canvas;
+       context = gtk_widget_get_style_context (GTK_WIDGET (canvas));
+
+       gtk_style_context_save (context);
+       gtk_style_context_add_class (context, "nautilus-canvas-item");
+
+       /* Assume we're updated so canvas item data is right */
+
+       /* Calculate the offset from the top-left corner of the
+          new image to the item position (where the pixmap is placed) */
+       eel_canvas_world_to_window (canvas,
+                                   item->details->x, item->details->y,
+                                   &item_x, &item_y);
+
+       item_offset_x = item_x - EEL_CANVAS_ITEM (item)->x1;
+       item_offset_y = item_y - EEL_CANVAS_ITEM (item)->y1;
+
+       /* Calculate the width of the item */
+       width = EEL_CANVAS_ITEM (item)->x2 - EEL_CANVAS_ITEM (item)->x1;
+       height = EEL_CANVAS_ITEM (item)->y2 - EEL_CANVAS_ITEM (item)->y1;
+
+        surface = gdk_window_create_similar_surface (gtk_widget_get_window (GTK_WIDGET (canvas)),
+                                                    CAIRO_CONTENT_COLOR_ALPHA,
+                                                    width, height);
+       cr = cairo_create (surface);
+
+       drag_surface = map_surface (item);
+       gtk_render_icon_surface (context, cr, drag_surface,
+                                item_offset_x, item_offset_y);
+       cairo_surface_destroy (drag_surface);
+
+       get_scaled_icon_size (item, &pix_width, &pix_height);
+
+       icon_rect.x0 = item_offset_x;
+       icon_rect.y0 = item_offset_y;
+       icon_rect.x1 = item_offset_x + pix_width;
+       icon_rect.y1 = item_offset_y + pix_height;
+
+       draw_embedded_text (item, cr,
+                           item_offset_x, item_offset_y);
+       draw_label_text (item, cr, icon_rect);
+       cairo_destroy (cr);
+
+       gtk_style_context_restore (context);
+
+       return surface;
+}
+
 /* Draw the canvas item for non-anti-aliased mode. */
 static void
 nautilus_canvas_item_draw (EelCanvasItem *item,