172a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen// Copyright (c) 2011 The Chromium Authors. All rights reserved. 2c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch// Use of this source code is governed by a BSD-style license that can be 3c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch// found in the LICENSE file. 4c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 572a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen#include "chrome/browser/ui/gtk/nine_box.h" 6c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 7c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch#include "base/basictypes.h" 8c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch#include "base/i18n/rtl.h" 9c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch#include "base/logging.h" 1072a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen#include "ui/base/resource/resource_bundle.h" 1172a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen#include "ui/gfx/gtk_util.h" 1272a454cd3513ac24fbdd0e0cb9ad70b86a99b801Kristian Monsen#include "ui/gfx/point.h" 13c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 14c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochnamespace { 15c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 16c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch// Draw pixbuf |src| into |dst| at position (x, y). 17c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochvoid DrawPixbuf(cairo_t* cr, GdkPixbuf* src, int x, int y, double alpha) { 18c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gdk_cairo_set_source_pixbuf(cr, src, x, y); 19c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch cairo_paint_with_alpha(cr, alpha); 20c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 21c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 22c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch// Tile pixbuf |src| across |cr| at |x|, |y| for |width| and |height|. 23c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochvoid TileImage(cairo_t* cr, GdkPixbuf* src, 24c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch int x, int y, int width, int height, double alpha) { 25c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (alpha == 1.0) { 26c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gdk_cairo_set_source_pixbuf(cr, src, x, y); 27c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch cairo_pattern_set_extend(cairo_get_source(cr), CAIRO_EXTEND_REPEAT); 28c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch cairo_rectangle(cr, x, y, width, height); 29c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch cairo_fill(cr); 30c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } else { 31c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Since there is no easy way to apply a mask to a fill operation, we create 32c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // a secondary surface and tile into that, then paint it with |alpha|. 33c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch cairo_surface_t* surface = cairo_image_surface_create( 34c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch CAIRO_FORMAT_ARGB32, width, height); 35c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch cairo_t* tiled = cairo_create(surface); 36c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gdk_cairo_set_source_pixbuf(tiled, src, 0, 0); 37c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch cairo_pattern_set_extend(cairo_get_source(tiled), CAIRO_EXTEND_REPEAT); 38c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch cairo_rectangle(tiled, 0, 0, width, height); 39c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch cairo_fill(tiled); 40c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 41c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch cairo_set_source_surface(cr, surface, x, y); 42c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch cairo_paint_with_alpha(cr, alpha); 43c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 44c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch cairo_destroy(tiled); 45c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch cairo_surface_destroy(surface); 46c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } 47c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 48c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 49c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} // namespace 50c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 51c407dc5cd9bdc5668497f21b26b09d988ab439deBen MurdochNineBox::NineBox(int top_left, int top, int top_right, int left, int center, 52c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch int right, int bottom_left, int bottom, int bottom_right) 53c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch : unref_pixbufs_on_destroy_(false) { 54c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch ResourceBundle& rb = ResourceBundle::GetSharedInstance(); 55c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch images_[0] = top_left ? rb.GetPixbufNamed(top_left) : NULL; 56c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch images_[1] = top ? rb.GetPixbufNamed(top) : NULL; 57c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch images_[2] = top_right ? rb.GetPixbufNamed(top_right) : NULL; 58c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch images_[3] = left ? rb.GetPixbufNamed(left) : NULL; 59c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch images_[4] = center ? rb.GetPixbufNamed(center) : NULL; 60c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch images_[5] = right ? rb.GetPixbufNamed(right) : NULL; 61c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch images_[6] = bottom_left ? rb.GetPixbufNamed(bottom_left) : NULL; 62c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch images_[7] = bottom ? rb.GetPixbufNamed(bottom) : NULL; 63c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch images_[8] = bottom_right ? rb.GetPixbufNamed(bottom_right) : NULL; 64c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 65c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 66c407dc5cd9bdc5668497f21b26b09d988ab439deBen MurdochNineBox::NineBox(int image, int top_margin, int bottom_margin, int left_margin, 67c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch int right_margin) 68c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch : unref_pixbufs_on_destroy_(true) { 69c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch ResourceBundle& rb = ResourceBundle::GetSharedInstance(); 70c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch GdkPixbuf* pixbuf = rb.GetPixbufNamed(image); 71c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch int width = gdk_pixbuf_get_width(pixbuf); 72c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch int height = gdk_pixbuf_get_height(pixbuf); 73c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch int inset_width = left_margin + right_margin; 74c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch int inset_height = top_margin + bottom_margin; 75c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 76c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch images_[0] = gdk_pixbuf_new_subpixbuf(pixbuf, 0, 0, left_margin, top_margin); 77c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch images_[1] = gdk_pixbuf_new_subpixbuf(pixbuf, left_margin, 0, 78c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch width - inset_width, top_margin); 79c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch images_[2] = gdk_pixbuf_new_subpixbuf(pixbuf, width - right_margin, 0, 80c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch right_margin, top_margin); 81c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch images_[3] = gdk_pixbuf_new_subpixbuf(pixbuf, 0, top_margin, 82c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch left_margin, height - inset_height); 83c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch images_[4] = gdk_pixbuf_new_subpixbuf(pixbuf, left_margin, top_margin, 84c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch width - inset_width, 85c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch height - inset_height); 86c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch images_[5] = gdk_pixbuf_new_subpixbuf(pixbuf, width - right_margin, 87c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch top_margin, right_margin, 88c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch height - inset_height); 89c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch images_[6] = gdk_pixbuf_new_subpixbuf(pixbuf, 0, height - bottom_margin, 90c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch left_margin, bottom_margin); 91c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch images_[7] = gdk_pixbuf_new_subpixbuf(pixbuf, left_margin, 92c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch height - bottom_margin, 93c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch width - inset_width, bottom_margin); 94c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch images_[8] = gdk_pixbuf_new_subpixbuf(pixbuf, width - right_margin, 95c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch height - bottom_margin, 96c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch right_margin, bottom_margin); 97c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 98c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 99c407dc5cd9bdc5668497f21b26b09d988ab439deBen MurdochNineBox::~NineBox() { 100c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (unref_pixbufs_on_destroy_) { 101c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch for (int i = 0; i < 9; i++) { 102c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch g_object_unref(images_[i]); 103c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } 104c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } 105c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 106c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 107c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochvoid NineBox::RenderToWidget(GtkWidget* dst) const { 108c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch RenderToWidgetWithOpacity(dst, 1.0); 109c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 110c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 111c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochvoid NineBox::RenderToWidgetWithOpacity(GtkWidget* dst, double opacity) const { 112c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch int dst_width = dst->allocation.width; 113c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch int dst_height = dst->allocation.height; 114c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 115c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // The upper-left and lower-right corners of the center square in the 116c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // rendering of the ninebox. 117c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch int x1 = gdk_pixbuf_get_width(images_[0]); 118c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch int y1 = gdk_pixbuf_get_height(images_[0]); 119c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch int x2 = images_[2] ? dst_width - gdk_pixbuf_get_width(images_[2]) : x1; 120c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch int y2 = images_[6] ? dst_height - gdk_pixbuf_get_height(images_[6]) : y1; 121c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Paint nothing if there's not enough room. 122c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (x2 < x1 || y2 < y1) 123c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch return; 124c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 125c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch cairo_t* cr = gdk_cairo_create(GDK_DRAWABLE(dst->window)); 126c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // For widgets that have their own window, the allocation (x,y) coordinates 127c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // are GdkWindow relative. For other widgets, the coordinates are relative 128c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // to their container. 129c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (GTK_WIDGET_NO_WINDOW(dst)) { 130c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Transform our cairo from window to widget coordinates. 131c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch cairo_translate(cr, dst->allocation.x, dst->allocation.y); 132c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } 133c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 134c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (base::i18n::IsRTL()) { 135c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch cairo_translate(cr, dst_width, 0.0f); 136c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch cairo_scale(cr, -1.0f, 1.0f); 137c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } 138c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 139c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Top row, center image is horizontally tiled. 140c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (images_[0]) 141c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch DrawPixbuf(cr, images_[0], 0, 0, opacity); 142c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (images_[1]) 143c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch TileImage(cr, images_[1], x1, 0, x2 - x1, y1, opacity); 144c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (images_[2]) 145c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch DrawPixbuf(cr, images_[2], x2, 0, opacity); 146c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 147c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Center row, all images are vertically tiled, center is horizontally tiled. 148c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (images_[3]) 149c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch TileImage(cr, images_[3], 0, y1, x1, y2 - y1, opacity); 150c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (images_[4]) 151c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch TileImage(cr, images_[4], x1, y1, x2 - x1, y2 - y1, opacity); 152c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (images_[5]) 153c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch TileImage(cr, images_[5], x2, y1, dst_width - x2, y2 - y1, opacity); 154c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 155c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Bottom row, center image is horizontally tiled. 156c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (images_[6]) 157c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch DrawPixbuf(cr, images_[6], 0, y2, opacity); 158c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (images_[7]) 159c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch TileImage(cr, images_[7], x1, y2, x2 - x1, dst_height - y2, opacity); 160c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (images_[8]) 161c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch DrawPixbuf(cr, images_[8], x2, y2, opacity); 162c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 163c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch cairo_destroy(cr); 164c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 165c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 166c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochvoid NineBox::RenderTopCenterStrip(cairo_t* cr, int x, int y, 167c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch int width) const { 168c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch const int height = gdk_pixbuf_get_height(images_[1]); 169c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch TileImage(cr, images_[1], x, y, width, height, 1.0); 170c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 171c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 172c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochvoid NineBox::ChangeWhiteToTransparent() { 173c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch for (int image_idx = 0; image_idx < 9; ++image_idx) { 174c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch GdkPixbuf* pixbuf = images_[image_idx]; 175c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (!pixbuf) 176c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch continue; 177c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 178c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (!gdk_pixbuf_get_has_alpha(pixbuf)) 179c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch continue; 180c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 181c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch guchar* pixels = gdk_pixbuf_get_pixels(pixbuf); 182c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch int rowstride = gdk_pixbuf_get_rowstride(pixbuf); 183c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch int width = gdk_pixbuf_get_width(pixbuf); 184c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch int height = gdk_pixbuf_get_height(pixbuf); 185c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 186c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (width * 4 > rowstride) { 187c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch NOTREACHED(); 188c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch continue; 189c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } 190c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 191c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch for (int i = 0; i < height; ++i) { 192c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch for (int j = 0; j < width; ++j) { 193c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch guchar* pixel = &pixels[i * rowstride + j * 4]; 194c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (pixel[0] == 0xff && pixel[1] == 0xff && pixel[2] == 0xff) { 195c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch pixel[3] = 0; 196c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } 197c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } 198c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } 199c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } 200c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 201c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 202c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdochvoid NineBox::ContourWidget(GtkWidget* widget) const { 203c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch int width = widget->allocation.width; 204c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch int height = widget->allocation.height; 205c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch int x1 = gdk_pixbuf_get_width(images_[0]); 206c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch int x2 = width - gdk_pixbuf_get_width(images_[2]); 207c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 208c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Paint the left and right sides. 209c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch GdkBitmap* mask = gdk_pixmap_new(NULL, width, height, 1); 210c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gdk_pixbuf_render_threshold_alpha(images_[0], mask, 211c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 0, 0, 212c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 0, 0, -1, -1, 213c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 1); 214c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gdk_pixbuf_render_threshold_alpha(images_[2], mask, 215c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 0, 0, 216c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch x2, 0, -1, -1, 217c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 1); 218c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 219c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Assume no transparency in the middle rectangle. 220c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch cairo_t* cr = gdk_cairo_create(mask); 221c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch cairo_rectangle(cr, x1, 0, x2 - x1, height); 222c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch cairo_fill(cr); 223c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch cairo_destroy(cr); 224c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 225c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Mask the widget's window's shape. 226c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch if (!base::i18n::IsRTL()) { 227c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gtk_widget_shape_combine_mask(widget, mask, 0, 0); 228c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } else { 229c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch GdkBitmap* flipped_mask = gdk_pixmap_new(NULL, width, height, 1); 230c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch cairo_t* flipped_cr = gdk_cairo_create(flipped_mask); 231c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 232c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Clear the target bitmap. 233c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch cairo_set_operator(flipped_cr, CAIRO_OPERATOR_CLEAR); 234c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch cairo_paint(flipped_cr); 235c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 236c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Apply flipping transformation. 237c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch cairo_translate(flipped_cr, width, 0.0f); 238c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch cairo_scale(flipped_cr, -1.0f, 1.0f); 239c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 240c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Paint the source bitmap onto the target. 241c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch cairo_set_operator(flipped_cr, CAIRO_OPERATOR_SOURCE); 242c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gdk_cairo_set_source_pixmap(flipped_cr, mask, 0, 0); 243c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch cairo_paint(flipped_cr); 244c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch cairo_destroy(flipped_cr); 245c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 246c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch // Mask the widget. 247c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch gtk_widget_shape_combine_mask(widget, flipped_mask, 0, 0); 248c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch g_object_unref(flipped_mask); 249c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch } 250c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch 251c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch g_object_unref(mask); 252c407dc5cd9bdc5668497f21b26b09d988ab439deBen Murdoch} 253