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// 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_item_view.h"
#include <uxtheme.h>
#include <Vssym32.h>
#include "grit/app_strings.h"
#include "ui/gfx/canvas_skia.h"
#include "ui/gfx/native_theme_win.h"
#include "views/controls/menu/menu_config.h"
#include "views/controls/menu/submenu_view.h"
using gfx::NativeTheme;
namespace views {
gfx::Size MenuItemView::CalculatePreferredSize() {
const gfx::Font& font = MenuConfig::instance().font;
return gfx::Size(
font.GetStringWidth(title_) + label_start_ + item_right_margin_ +
GetChildPreferredWidth(),
font.GetHeight() + GetBottomMargin() + GetTopMargin());
}
void MenuItemView::PaintButton(gfx::Canvas* canvas, PaintButtonMode mode) {
const MenuConfig& config = MenuConfig::instance();
bool render_selection =
(mode == PB_NORMAL && IsSelected() &&
parent_menu_item_->GetSubmenu()->GetShowSelection(this) &&
!has_children());
int state = render_selection ? MPI_HOT :
(IsEnabled() ? MPI_NORMAL : MPI_DISABLED);
NativeTheme::State control_state;
if (!IsEnabled()) {
control_state = NativeTheme::kDisabled;
} else {
control_state = render_selection ? NativeTheme::kHovered:
NativeTheme::kNormal;
}
// The gutter is rendered before the background.
if (config.render_gutter && mode == PB_NORMAL) {
gfx::Rect gutter_bounds(label_start_ - config.gutter_to_label -
config.gutter_width, 0, config.gutter_width,
height());
AdjustBoundsForRTLUI(&gutter_bounds);
NativeTheme::ExtraParams extra;
NativeTheme::instance()->Paint(canvas->AsCanvasSkia(),
NativeTheme::kMenuPopupGutter,
NativeTheme::kNormal,
gutter_bounds,
extra);
}
// Render the background.
if (mode == PB_NORMAL) {
gfx::Rect item_bounds(0, 0, width(), height());
NativeTheme::ExtraParams extra;
extra.menu_item.is_selected = render_selection;
AdjustBoundsForRTLUI(&item_bounds);
NativeTheme::instance()->Paint(canvas->AsCanvasSkia(),
NativeTheme::kMenuItemBackground, control_state, item_bounds, extra);
}
int top_margin = GetTopMargin();
int bottom_margin = GetBottomMargin();
if ((type_ == RADIO || type_ == CHECKBOX) &&
GetDelegate()->IsItemChecked(GetCommand())) {
PaintCheck(canvas, control_state, config);
}
// Render the foreground.
// Menu color is specific to Vista, fallback to classic colors if can't
// get color.
int default_sys_color = render_selection ? COLOR_HIGHLIGHTTEXT :
(IsEnabled() ? COLOR_MENUTEXT : COLOR_GRAYTEXT);
SkColor fg_color = gfx::NativeThemeWin::instance()->GetThemeColorWithDefault(
gfx::NativeThemeWin::MENU, MENU_POPUPITEM, state, TMT_TEXTCOLOR,
default_sys_color);
const gfx::Font& font = MenuConfig::instance().font;
int accel_width = parent_menu_item_->GetSubmenu()->max_accelerator_width();
int width = this->width() - item_right_margin_ - label_start_ - accel_width;
gfx::Rect text_bounds(label_start_, top_margin, width, font.GetHeight());
text_bounds.set_x(GetMirroredXForRect(text_bounds));
if (mode == PB_FOR_DRAG) {
// With different themes, it's difficult to tell what the correct
// foreground and background colors are for the text to draw the correct
// halo. Instead, just draw black on white, which will look good in most
// cases.
canvas->AsCanvasSkia()->DrawStringWithHalo(
GetTitle(), font, 0x00000000, 0xFFFFFFFF, text_bounds.x(),
text_bounds.y(), text_bounds.width(), text_bounds.height(),
GetRootMenuItem()->GetDrawStringFlags());
} else {
canvas->DrawStringInt(GetTitle(), font, fg_color,
text_bounds.x(), text_bounds.y(), text_bounds.width(),
text_bounds.height(),
GetRootMenuItem()->GetDrawStringFlags());
}
PaintAccelerator(canvas);
if (icon_.width() > 0) {
gfx::Rect icon_bounds(config.item_left_margin,
top_margin + (height() - top_margin -
bottom_margin - icon_.height()) / 2,
icon_.width(),
icon_.height());
icon_bounds.set_x(GetMirroredXForRect(icon_bounds));
canvas->DrawBitmapInt(icon_, icon_bounds.x(), icon_bounds.y());
}
if (HasSubmenu()) {
int state_id = IsEnabled() ? MSM_NORMAL : MSM_DISABLED;
gfx::Rect arrow_bounds(this->width() - item_right_margin_ +
config.label_to_arrow_padding, 0,
config.arrow_width, height());
AdjustBoundsForRTLUI(&arrow_bounds);
// If our sub menus open from right to left (which is the case when the
// locale is RTL) then we should make sure the menu arrow points to the
// right direction.
gfx::NativeTheme::ExtraParams extra;
extra.menu_arrow.pointing_right = !base::i18n::IsRTL();
gfx::NativeTheme::instance()->Paint(canvas->AsCanvasSkia(),
gfx::NativeTheme::kMenuPopupArrow, control_state, arrow_bounds, extra);
}
}
void MenuItemView::PaintCheck(gfx::Canvas* canvas,
NativeTheme::State state,
const MenuConfig& config) {
int icon_width;
int icon_height;
if (type_ == RADIO) {
icon_width = config.radio_width;
icon_height = config.radio_height;
} else {
icon_width = config.check_width;
icon_height = config.check_height;
}
int top_margin = GetTopMargin();
int icon_x = MenuConfig::instance().item_left_margin;
int icon_y = top_margin +
(height() - top_margin - GetBottomMargin() - icon_height) / 2;
NativeTheme::ExtraParams extra;
extra.menu_check.is_radio = type_ == RADIO;
// Draw the background.
gfx::Rect bg_bounds(0, 0, icon_x + icon_width, height());
AdjustBoundsForRTLUI(&bg_bounds);
NativeTheme::instance()->Paint(canvas->AsCanvasSkia(),
NativeTheme::kMenuCheckBackground, state, bg_bounds, extra);
// And the check.
gfx::Rect icon_bounds(icon_x / 2, icon_y, icon_width, icon_height);
AdjustBoundsForRTLUI(&icon_bounds);
NativeTheme::instance()->Paint(canvas->AsCanvasSkia(),
NativeTheme::kMenuCheck, state, bg_bounds, extra);
}
} // namespace views
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