Alter NineBox so that it can accept a single sprite resource with insets that...

chrome/browser/gtk/nine_box.cc

 // Copyright (c) 2009 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/gtk/nine_box.h"
 
 #include "app/gfx/gtk_util.h"
 #include "app/l10n_util.h"
 #include "app/resource_bundle.h"
 #include "app/theme_provider.h"
@@ skipping 14 matching lines @@
                int x, int y, int width, int height) {
   gdk_cairo_set_source_pixbuf(cr, src, x, y);
   cairo_pattern_set_extend(cairo_get_source(cr), CAIRO_EXTEND_REPEAT);
   cairo_rectangle(cr, x, y, width, height);
   cairo_fill(cr);
 }
 
 }  // namespace
 
 NineBox::NineBox(int top_left, int top, int top_right, int left, int center,
-                 int right, int bottom_left, int bottom, int bottom_right) {
+                 int right, int bottom_left, int bottom, int bottom_right)
+    : unref_pixbufs_on_destroy_(false) {
   ResourceBundle& rb = ResourceBundle::GetSharedInstance();
   images_[0] = top_left ? rb.GetPixbufNamed(top_left) : NULL;
   images_[1] = top ? rb.GetPixbufNamed(top) : NULL;
   images_[2] = top_right ? rb.GetPixbufNamed(top_right) : NULL;
   images_[3] = left ? rb.GetPixbufNamed(left) : NULL;
   images_[4] = center ? rb.GetPixbufNamed(center) : NULL;
   images_[5] = right ? rb.GetPixbufNamed(right) : NULL;
   images_[6] = bottom_left ? rb.GetPixbufNamed(bottom_left) : NULL;
   images_[7] = bottom ? rb.GetPixbufNamed(bottom) : NULL;
   images_[8] = bottom_right ? rb.GetPixbufNamed(bottom_right) : NULL;
 }
 
+NineBox::NineBox(int image, int top_margin, int bottom_margin, int left_margin,
+                 int right_margin)
+    : unref_pixbufs_on_destroy_(true) {
+  ResourceBundle& rb = ResourceBundle::GetSharedInstance();
+  GdkPixbuf* pixbuf = rb.GetPixbufNamed(image);
+  int width = gdk_pixbuf_get_width(pixbuf);
+  int height = gdk_pixbuf_get_height(pixbuf);
+  int inset_width = left_margin + right_margin;
+  int inset_height = top_margin + bottom_margin;
+
+  images_[0] = gdk_pixbuf_new_subpixbuf(pixbuf, 0, 0, left_margin, top_margin);
+  images_[1] = gdk_pixbuf_new_subpixbuf(pixbuf, left_margin, 0,
+                                        width - inset_width, top_margin);
+  images_[2] = gdk_pixbuf_new_subpixbuf(pixbuf, width - right_margin, 0,
+                                        right_margin, top_margin);
+  images_[3] = gdk_pixbuf_new_subpixbuf(pixbuf, 0, top_margin,
+                                        left_margin, height - inset_height);
+  images_[4] = gdk_pixbuf_new_subpixbuf(pixbuf, left_margin, top_margin,
+                                        width - inset_width,
+                                        height - inset_height);
+  images_[5] = gdk_pixbuf_new_subpixbuf(pixbuf, width - right_margin,
+                                        top_margin, right_margin,
+                                        height - inset_height);
+  images_[6] = gdk_pixbuf_new_subpixbuf(pixbuf, 0, height - bottom_margin,
+                                        left_margin, bottom_margin);
+  images_[7] = gdk_pixbuf_new_subpixbuf(pixbuf, left_margin,
+                                        height - bottom_margin,
+                                        width - inset_width, bottom_margin);
+  images_[8] = gdk_pixbuf_new_subpixbuf(pixbuf, width - right_margin,
+                                        height - bottom_margin,
+                                        right_margin, bottom_margin);
+}
+
 NineBox::~NineBox() {
+  if (unref_pixbufs_on_destroy_) {
+    for (int i = 0; i < 9; i++) {
+      g_object_unref(images_[i]);
+    }
+  }
 }
 
 void NineBox::RenderToWidget(GtkWidget* dst) const {
   int dst_width = dst->allocation.width;
   int dst_height = dst->allocation.height;
 
   // The upper-left and lower-right corners of the center square in the
   // rendering of the ninebox.
   int x1 = gdk_pixbuf_get_width(images_[0]);
   int y1 = gdk_pixbuf_get_height(images_[0]);
@@ skipping 124 matching lines @@
     cairo_paint(flipped_cr);
     cairo_destroy(flipped_cr);
 
     // Mask the widget.
     gtk_widget_shape_combine_mask(widget, flipped_mask, 0, 0);
     g_object_unref(flipped_mask);
   }
 
   g_object_unref(mask);
 }