views/controls/menu/menu_separator_win.cc

// Copyright (c) 2011 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 "views/controls/menu/menu_separator.h"

#include <windows.h>
#include <uxtheme.h>
#include <Vssym32.h>

#include "ui/gfx/canvas_skia.h"
#include "ui/gfx/native_theme.h"
#include "ui/gfx/rect.h"
#include "views/controls/menu/menu_config.h"
#include "views/controls/menu/menu_item_view.h"

namespace views {

void MenuSeparator::OnPaint(gfx::Canvas* canvas) {
  const MenuConfig& config = MenuConfig::instance();
  // The gutter is rendered before the background.
  int start_x = 0;
  const gfx::NativeTheme* theme = gfx::NativeTheme::instance();
  if (config.render_gutter) {
    // If render_gutter is true, we're on Vista and need to render the
    // gutter, then indent the separator from the gutter.
    gfx::Rect gutter_bounds(MenuItemView::label_start() -
        config.gutter_to_label - config.gutter_width, 0,
        config.gutter_width, height());
    gfx::NativeTheme::ExtraParams extra;
    theme->Paint(canvas->GetSkCanvas(), gfx::NativeTheme::kMenuPopupGutter,
                 gfx::NativeTheme::kNormal, gutter_bounds, extra);
    start_x = gutter_bounds.x() + config.gutter_width;
  }

  gfx::Rect separator_bounds(start_x, 0, width(), height());
  gfx::NativeTheme::ExtraParams extra;
  extra.menu_separator.has_gutter = config.render_gutter;
  theme->Paint(canvas->GetSkCanvas(), gfx::NativeTheme::kMenuPopupSeparator,
               gfx::NativeTheme::kNormal, separator_bounds, extra);
}

gfx::Size MenuSeparator::GetPreferredSize() {
  return gfx::Size(10,  // Just in case we're the only item in a menu.
                   MenuConfig::instance().separator_height);
}

}  // namespace views