1 files changed, 84 insertions, 0 deletions
diff --git a/ui/gfx/gtk_util.h b/ui/gfx/gtk_util.h
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+++ b/ui/gfx/gtk_util.h
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+// 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 UI_GFX_GTK_UTIL_H_
+#define UI_GFX_GTK_UTIL_H_
+#pragma once
+
+#include <glib-object.h>
+#include <stdint.h>
+
+#include <string>
+#include <vector>
+
+#include "base/scoped_ptr.h"
+
+typedef struct _GdkPixbuf GdkPixbuf;
+typedef struct _GdkRegion GdkRegion;
+typedef struct _GdkCursor GdkCursor;
+
+class CommandLine;
+class SkBitmap;
+
+namespace gfx {
+
+class Rect;
+
+// Call gtk_init() using the argc and argv from command_line.
+// gtk_init() wants an argc and argv that it can mutate; we provide those,
+// but leave the original CommandLine unaltered.
+void GtkInitFromCommandLine(const CommandLine& command_line);
+
+// Convert and copy a SkBitmap to a GdkPixbuf. NOTE: this uses BGRAToRGBA, so
+// it is an expensive operation.  The returned GdkPixbuf will have a refcount of
+// 1, and the caller is responsible for unrefing it when done.
+GdkPixbuf* GdkPixbufFromSkBitmap(const SkBitmap* bitmap);
+
+// Modify the given region by subtracting the given rectangles.
+void SubtractRectanglesFromRegion(GdkRegion* region,
+                                  const std::vector<Rect>& cutouts);
+
+// Returns the resolution (DPI) used by pango. A negative values means the
+// resolution hasn't been set.
+double GetPangoResolution();
+
+// Returns a static instance of a GdkCursor* object, sharable across the
+// process. Caller must gdk_cursor_ref() it if they want to assume ownership.
+GdkCursor* GetCursor(int type);
+
+// Change windows accelerator style to GTK style. (GTK uses _ for
+// accelerators.  Windows uses & with && as an escape for &.)
+std::string ConvertAcceleratorsFromWindowsStyle(const std::string& label);
+
+// Removes the "&" accelerators from a Windows label.
+std::string RemoveWindowsStyleAccelerators(const std::string& label);
+
+// Makes a copy of |pixels| with the ordering changed from BGRA to RGBA.
+// The caller is responsible for free()ing the data. If |stride| is 0, it's
+// assumed to be 4 * |width|.
+uint8_t* BGRAToRGBA(const uint8_t* pixels, int width, int height, int stride);
+
+}  // 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  // UI_GFX_GTK_UTIL_H_