| // 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. |
| |
| #ifndef BASE_GFX_GTK_UTIL_H_ |
| #define BASE_GFX_GTK_UTIL_H_ |
| |
| #include <stdint.h> |
| #include <vector> |
| |
| #include <glib-object.h> |
| |
| #include "base/scoped_ptr.h" |
| |
| typedef struct _GdkColor GdkColor; |
| typedef struct _GdkPixbuf GdkPixbuf; |
| typedef struct _GdkRegion GdkRegion; |
| |
| class SkBitmap; |
| |
| // Define a macro for creating GdkColors from RGB values. This is a macro to |
| // allow static construction of literals, etc. Use this like: |
| // GdkColor white = GDK_COLOR_RGB(0xff, 0xff, 0xff); |
| #define GDK_COLOR_RGB(r, g, b) {0, r * 257, g * 257, b * 257} |
| |
| namespace gfx { |
| |
| class Rect; |
| |
| extern const GdkColor kGdkWhite; |
| extern const GdkColor kGdkBlack; |
| extern const GdkColor kGdkGreen; |
| |
| // Convert and copy a SkBitmap to a GdkPixbuf. NOTE: this uses BGRAToRGBA, so |
| // it is an expensive operation. |
| GdkPixbuf* GdkPixbufFromSkBitmap(const SkBitmap* bitmap); |
| |
| // Modify the given region by subtracting the given rectangles. |
| void SubtractRectanglesFromRegion(GdkRegion* region, |
| const std::vector<Rect>& cutouts); |
| |
| } // namespace gfx |
| |
| namespace { |
| // A helper class that will g_object_unref |p| when it goes out of scope. |
| // This never adds a ref, it only unrefs. |
| template <typename Type> |
| struct GObjectUnrefer { |
| void operator()(Type* ptr) const { |
| if (ptr) |
| g_object_unref(ptr); |
| } |
| }; |
| } // namespace |
| |
| // It's not legal C++ to have a templatized typedefs, so we wrap it in a |
| // struct. When using this, you need to include ::Type. E.g., |
| // ScopedGObject<GdkPixbufLoader>::Type loader(gdk_pixbuf_loader_new()); |
| template<class T> |
| struct ScopedGObject { |
| typedef scoped_ptr_malloc<T, GObjectUnrefer<T> > Type; |
| }; |
| |
| #endif // BASE_GFX_GTK_UTIL_H_ |