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/geometry/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
  31
  32   // Hack to get the separator to display correctly on Windows where we may
  33   // have fractional scales. We move the separator 1 pixel down to ensure that
  34   // it falls within the clipping rect which is scaled up.
  35   float device_scale = gfx::GetDPIScale();
  36   bool is_fractional_scale =
  37       (device_scale - static_cast<int>(device_scale) != 0);
  38   if (is_fractional_scale && separator_bounds.y() == 0)
  39     separator_bounds.set_y(1);
  40
  41   ui::NativeTheme::ExtraParams extra;
  42   config.native_theme->Paint(
  43       canvas->sk_canvas(), ui::NativeTheme::kMenuPopupSeparator,
  44       ui::NativeTheme::kNormal, separator_bounds, extra);
  45 }
  46
  47 }  // namespace views