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// Copyright (c) 2011 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_LINUX_UTIL_H_
#define UI_GFX_LINUX_UTIL_H_
#pragma once
#include <glib-object.h>
#include <stdint.h>
#include <string>
#include <vector>
#include "base/memory/scoped_ptr.h"
#include "ui/base/ui_export.h"
typedef struct _PangoContext PangoContext;
namespace gfx {
// Creates and returns a PangoContext. The caller owns the context.
PangoContext* GetPangoContext();
// Returns the resolution (DPI) used by pango. A negative values means the
// resolution hasn't been set.
double GetPangoResolution();
// Change windows accelerator style to GTK style. (GTK uses _ for
// accelerators. Windows uses & with && as an escape for &.)
UI_EXPORT std::string ConvertAcceleratorsFromWindowsStyle(
const std::string& label);
// Removes the "&" accelerators from a Windows label.
UI_EXPORT 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
// 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 {
// A helper class that will g_object_unref |p| when it goes out of scope.
// This never adds a ref, it only unrefs.
template<class U>
struct GObjectUnrefer {
void operator()(U* ptr) const {
if (ptr)
g_object_unref(ptr);
}
};
typedef scoped_ptr_malloc<T, GObjectUnrefer<T> > Type;
};
#endif // UI_GFX_LINUX_UTIL_H_
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