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// Copyright (c) 2010 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 "gfx/win_util.h"
#include <windows.h>
#include "base/win_util.h"
namespace {
bool DynamicLibraryPresent(const wchar_t* lib_name) {
HINSTANCE lib = LoadLibrary(lib_name);
if (lib) {
FreeLibrary(lib);
return true;
}
return false;
}
} // namespace
namespace gfx {
// Returns true if Direct2d is available, false otherwise.
bool Direct2dIsAvailable() {
static bool checked = false;
static bool available = false;
if (!checked) {
win_util::WinVersion version = win_util::GetWinVersion();
if (version < win_util::WINVERSION_VISTA)
available = false;
else if (version >= win_util::WINVERSION_WIN7)
available = true;
else
available = DynamicLibraryPresent(L"d2d1.dll");
checked = true;
}
return available;
}
// Returns true if DirectWrite is available, false otherwise.
bool DirectWriteIsAvailable() {
static bool checked = false;
static bool available = false;
if (!checked) {
win_util::WinVersion version = win_util::GetWinVersion();
if (version < win_util::WINVERSION_VISTA)
available = false;
else if (version >= win_util::WINVERSION_WIN7)
available = true;
else
available = DynamicLibraryPresent(L"dwrite.dll");
checked = true;
}
return available;
}
} // namespace gfx
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