src/renderer/unix/draw_tool_interface.h

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#ifndef MOZC_RENDERER_UNIX_DRAW_TOOL_INTERFACE_H_
#define MOZC_RENDERER_UNIX_DRAW_TOOL_INTERFACE_H_

#include <gtk/gtk.h>

#include "base/port.h"

namespace mozc {

struct Point;
struct Rect;

namespace renderer {
namespace gtk {

struct RGBA;
class CairoWrapperInterface;

class DrawToolInterface {
 public:
  explicit DrawToolInterface() {}
  virtual ~DrawToolInterface() {}

  // Resets internal cairo context to given one.
  virtual void Reset(CairoWrapperInterface *cairo) = 0;

  // To use double buffering, call Save function before call drawing operations,
  // and call Restore function after all drawing operation is finished.
  virtual void Save() = 0;
  virtual void Restore() = 0;

  // Draws rectangle and fill inside of it with spcified color.
  virtual void FillRect(const Rect &rect, const RGBA &color) = 0;

  // Draws rectangle with specified color.
  virtual void FrameRect(const Rect &rect,
                         const RGBA &color,
                         const uint32 line_width) = 0;

  // Draws line with specified color.
  virtual void DrawLine(const Point &from,
                        const Point &to,
                        const RGBA &color,
                        const uint32 line_width) = 0;
};
}  // namespace gtk
}  // namespace renderer
}  // namespace mozc
#endif  // MOZC_RENDERER_UNIX_DRAW_TOOL_INTERFACE_H_