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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.
#include "ui/gfx/linux_util.h"
#include <pango/pango.h>
#include <pango/pangocairo.h>
#include <stdlib.h>
#include "base/basictypes.h"
#include "base/command_line.h"
#include "base/linux_util.h"
#include "third_party/skia/include/core/SkBitmap.h"
#include "third_party/skia/include/core/SkUnPreMultiply.h"
#include "ui/gfx/rect.h"
namespace {
// Common implementation of ConvertAcceleratorsFromWindowsStyle() and
// RemoveWindowsStyleAccelerators().
// Replaces all ampersands (as used in our grd files to indicate mnemonics)
// to |target|. Similarly any underscores get replaced with two underscores as
// is needed by GTK.
std::string ConvertAmperstandsTo(const std::string& label,
const std::string& target) {
std::string ret;
ret.reserve(label.length() * 2);
for (size_t i = 0; i < label.length(); ++i) {
if ('_' == label[i]) {
ret.push_back('_');
ret.push_back('_');
} else if ('&' == label[i]) {
if (i + 1 < label.length() && '&' == label[i + 1]) {
ret.push_back('&');
++i;
} else {
ret.append(target);
}
} else {
ret.push_back(label[i]);
}
}
return ret;
}
} // namespace
namespace gfx {
#if defined(USE_WAYLAND) || defined(USE_AURA)
PangoContext* GetPangoContext() {
PangoFontMap* font_map = pango_cairo_font_map_get_default();
return pango_font_map_create_context(font_map);
}
#endif
double GetPangoResolution() {
static double resolution;
static bool determined_resolution = false;
if (!determined_resolution) {
determined_resolution = true;
PangoContext* default_context = GetPangoContext();
resolution = pango_cairo_context_get_resolution(default_context);
g_object_unref(default_context);
}
return resolution;
}
std::string ConvertAcceleratorsFromWindowsStyle(const std::string& label) {
return ConvertAmperstandsTo(label, "_");
}
std::string RemoveWindowsStyleAccelerators(const std::string& label) {
return ConvertAmperstandsTo(label, "");
}
uint8_t* BGRAToRGBA(const uint8_t* pixels, int width, int height, int stride) {
if (stride == 0)
stride = width * 4;
uint8_t* new_pixels = static_cast<uint8_t*>(malloc(height * stride));
// We have to copy the pixels and swap from BGRA to RGBA.
for (int i = 0; i < height; ++i) {
for (int j = 0; j < width; ++j) {
int idx = i * stride + j * 4;
new_pixels[idx] = pixels[idx + 2];
new_pixels[idx + 1] = pixels[idx + 1];
new_pixels[idx + 2] = pixels[idx];
new_pixels[idx + 3] = pixels[idx + 3];
}
}
return new_pixels;
}
} // namespace gfx
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