ui/views/controls/menu/menu_separator_win.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "ui/views/controls/menu/menu_separator.h"
   6
   7 #include <windows.h>
   8 #include <uxtheme.h>
   9 #include <Vssym32.h>
  10
  11 #include "ui/gfx/canvas.h"
  12 #include "ui/gfx/rect.h"
  13 #include "ui/gfx/win/dpi.h"
  14 #include "ui/native_theme/native_theme.h"
  15 #include "ui/native_theme/native_theme_aura.h"
  16 #include "ui/views/controls/menu/menu_config.h"
  17 #include "ui/views/controls/menu/menu_item_view.h"
  18
  19 namespace views {
  20
  21 void MenuSeparator::OnPaint(gfx::Canvas* canvas) {
  22   const MenuConfig& config = parent_menu_item_->GetMenuConfig();
  23
  24   if (config.native_theme == ui::NativeThemeAura::instance()) {
  25     OnPaintAura(canvas);
  26     return;
  27   }
  28
  29   gfx::Rect separator_bounds = GetPaintBounds();
  30   if (config.render_gutter) {
  31     // If render_gutter is true, we're on Vista and need to render the
  32     // gutter, then indent the separator from the gutter.
  33     gfx::Rect gutter_bounds(MenuItemView::label_start() -
  34         config.gutter_to_label - config.gutter_width, 0,
  35         config.gutter_width, height());
  36     ui::NativeTheme::ExtraParams extra;
  37     config.native_theme->Paint(
  38         canvas->sk_canvas(), ui::NativeTheme::kMenuPopupGutter,
  39         ui::NativeTheme::kNormal, gutter_bounds, extra);
  40     separator_bounds.set_x(gutter_bounds.x() + config.gutter_width);
  41   }
  42
  43   ui::NativeTheme::ExtraParams extra;
  44   extra.menu_separator.has_gutter = config.render_gutter;
  45
  46   // Hack to get the separator to display correctly on Windows where we may
  47   // have fractional scales. We move the separator 1 pixel down to ensure that
  48   // it falls within the clipping rect which is scaled up.
  49   float device_scale = gfx::win::GetDeviceScaleFactor();
  50   bool is_fractional_scale =
  51       (device_scale - static_cast<int>(device_scale) != 0);
  52   if (is_fractional_scale && separator_bounds.y() == 0)
  53     separator_bounds.set_y(1);
  54
  55   config.native_theme->Paint(
  56       canvas->sk_canvas(), ui::NativeTheme::kMenuPopupSeparator,
  57       ui::NativeTheme::kNormal, separator_bounds, extra);
  58 }
  59
  60 }  // namespace views