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// Copyright 2013 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_FONT_DELEGATE_H_
#define UI_GFX_LINUX_FONT_DELEGATE_H_
#include <string>
#include "ui/gfx/font_render_params_linux.h"
#include "ui/gfx/gfx_export.h"
namespace gfx {
// Allows a Linux platform specific overriding of font preferences.
class GFX_EXPORT LinuxFontDelegate {
public:
virtual ~LinuxFontDelegate() {}
// Sets the dynamically loaded singleton that provides font preferences.
// This pointer is not owned, and if this method is called a second time,
// the first instance is not deleted.
static void SetInstance(LinuxFontDelegate* instance);
// Returns a LinuxFontDelegate instance for the toolkit used in
// the user's desktop environment.
//
// Can return NULL, in case no toolkit has been set. (For example, if we're
// running with the "--ash" flag.)
static const LinuxFontDelegate* instance();
// Whether we should antialias our text.
virtual bool UseAntialiasing() const = 0;
// What sort of text hinting should we apply?
virtual FontRenderParams::Hinting GetHintingStyle() const = 0;
// What sort of subpixel rendering should we perform.
virtual FontRenderParams::SubpixelRendering
GetSubpixelRenderingStyle() const = 0;
// Returns the default font name for pango style rendering. The format is a
// string of the form "[font name] [font size]".
virtual std::string GetDefaultFontName() const = 0;
};
} // namespace gfx
#endif // UI_GFX_LINUX_FONT_DELEGATE_H_
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