src/renderer/unix/text_renderer.h

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#ifndef MOZC_RENDERER_UNIX_TEXT_RENDERER_H_
#define MOZC_RENDERER_UNIX_TEXT_RENDERER_H_

#include <gtk/gtk.h>

#include <memory>

#include "base/port.h"
#include "renderer/unix/font_spec_interface.h"
#include "renderer/unix/pango_wrapper_interface.h"
#include "renderer/unix/text_renderer_interface.h"
#include "testing/base/public/gunit_prod.h"

namespace mozc {
namespace renderer {
namespace gtk {

class TextRendererTest;

class TextRenderer : public TextRendererInterface {
 public:
  explicit TextRenderer(FontSpecInterface *font_spec);
  virtual ~TextRenderer() {}

  virtual void Initialize(GdkDrawable *drawable);
  virtual Size GetPixelSize(FontSpecInterface::FONT_TYPE font_type,
                            const string &str);
  virtual Size GetMultiLinePixelSize(FontSpecInterface::FONT_TYPE font_type,
                                     const string &str,
                                     const int width);
  virtual void RenderText(const string &text,
                          const Rect &rect,
                          FontSpecInterface::FONT_TYPE font_type);
  virtual void ReloadFontConfig(const string &font_description);

 private:
  friend class TextRendererTest;
  FRIEND_TEST(TextRendererTest, GetPixelSizeTest);
  FRIEND_TEST(TextRendererTest, GetMultilinePixelSizeTest);
  FRIEND_TEST(TextRendererTest, RenderTextTest);

  void SetUpPangoLayout(const string &str,
                        FontSpecInterface::FONT_TYPE font_type,
                        PangoLayoutWrapperInterface *layout);
  void RenderTextInternal(const string& text,
                          const Rect &rect,
                          FontSpecInterface::FONT_TYPE font_type,
                          PangoLayoutWrapperInterface *layout);
  Size GetPixelSizeInternal(FontSpecInterface::FONT_TYPE font_type,
                            const string &str,
                            PangoLayoutWrapperInterface *layout);
  Size GetMultiLinePixelSizeInternal(FontSpecInterface::FONT_TYPE font_type,
                                     const string &str,
                                     const int width,
                                     PangoLayoutWrapperInterface *layout);
  std::unique_ptr<FontSpecInterface> font_spec_;
  std::unique_ptr<PangoWrapperInterface> pango_;

  DISALLOW_COPY_AND_ASSIGN(TextRenderer);
};

}  // namespace gtk
}  // namespace renderer
}  // namespace mozc

#endif  // MOZC_RENDERER_UNIX_TEXT_RENDERER_H_