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//
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// this software without specific prior written permission.
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

#ifndef MOZC_GUI_BASE_WIN_UTIL_H_
#define MOZC_GUI_BASE_WIN_UTIL_H_

#include <QtGui/QWidget>

#include "base/base.h"

namespace mozc {
namespace gui {

class WinUtil {
 public:
  // Qt wrapper for DwmIsCompositionEnabled
  static bool IsCompositionEnabled();

  // Qt wrapper for DwmExtendFrameIntoClientArea
  static bool ExtendFrameIntoClientArea(QWidget *widget,
                                        int left, int top,
                                        int right, int bottom);

  static bool ExtendFrameIntoClientArea(QWidget *widget) {
    return WinUtil::ExtendFrameIntoClientArea(widget, -1, -1, -1, -1);
  }

  // Return the rect which is requred to display
  // "text" on the "widget".
  static QRect GetTextRect(QWidget *widget, const QString &text);

  // Install style sheets
  static void InstallStyleSheets(const QString &dwm_on_style,
                                 const QString &dwm_off_style);

  static void InstallStyleSheetsFiles(const QString &dwm_on_style_file,
                                      const QString &dwm_off_style_file);

  // Qt Wrapper for DrawThemeTextEx:
  // Draw "text" on the center of the client "rect".
  static void DrawThemeText(const QString &text,
                            const QRect &rect,
                            int glow_size,
                            QPainter *painter);

  // Activate Window generated by the process with 'process_id'.
  static void ActivateWindow(uint32 process_id);


  // return true if IME hotkey is disabled.
  static bool GetIMEHotKeyDisabled();

  // If |disabled| true, disable IME hotkey (Ctrl+Shift).
  // return true if the operation finishes successfully.
  // This function actually edits the registry entry as follows:
  // - |disabled| is true:
  //    Set "3" (REG_SZ) to "Keyboard Layout\\Toggle\\Layout Hotkey".
  // - |disabled| is false:
  //  Remove "Keyboard Layout\\Toggle\\Layout Hotkey".
  //  It is OK to remove this value. After removing the entry,
  //  Default setting is used.
  static bool SetIMEHotKeyDisabled(bool disabled);

  // This method keeps JumpList to be up-to-date on Windows 7.
  // Does nothing on any other platform.
  static void KeepJumpListUpToDate();

 private:
  WinUtil() {}
  ~WinUtil() {}

  DISALLOW_COPY_AND_ASSIGN(WinUtil);
};
}  // namespace gui
}  // namespace mozc

#endif  // MOZC_GUI_BASE_WIN_UTIL_H_