blob: 4be7f5a667cb9a855caf98dd9da757ecb050b5d6 [file] [log] [blame]
// Copyright (c) 2012 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 "ui/views/window/custom_frame_view.h"
#include <algorithm>
#include <vector>
#include "base/containers/adapters.h"
#include "base/strings/utf_string_conversions.h"
#include "build/build_config.h"
#include "third_party/skia/include/core/SkPath.h"
#include "ui/base/hit_test.h"
#include "ui/base/l10n/l10n_util.h"
#include "ui/base/resource/resource_bundle.h"
#include "ui/gfx/canvas.h"
#include "ui/gfx/font.h"
#include "ui/gfx/font_list.h"
#include "ui/gfx/geometry/rect.h"
#include "ui/gfx/image/image.h"
#include "ui/strings/grit/ui_strings.h"
#include "ui/views/controls/button/image_button.h"
#include "ui/views/resources/grit/views_resources.h"
#include "ui/views/views_delegate.h"
#include "ui/views/widget/native_widget_private.h"
#include "ui/views/widget/widget.h"
#include "ui/views/widget/widget_delegate.h"
#include "ui/views/window/client_view.h"
#include "ui/views/window/frame_background.h"
#include "ui/views/window/window_button_order_provider.h"
#include "ui/views/window/window_resources.h"
#include "ui/views/window/window_shape.h"
#if defined(OS_WIN)
#include "ui/display/win/screen_win.h"
#include "ui/gfx/system_fonts_win.h"
#endif
namespace views {
namespace {
// The frame border is only visible in restored mode and is hardcoded to 4 px on
// each side regardless of the system window border size.
constexpr int kFrameBorderThickness = 4;
// In the window corners, the resize areas don't actually expand bigger, but the
// 16 px at the end of each edge triggers diagonal resizing.
constexpr int kResizeAreaCornerSize = 16;
// The titlebar never shrinks too short to show the caption button plus some
// padding below it.
constexpr int kCaptionButtonHeightWithPadding = 19;
// The titlebar has a 2 px 3D edge along the top and bottom.
constexpr int kTitlebarTopAndBottomEdgeThickness = 2;
// The icon is inset 2 px from the left frame border.
constexpr int kIconLeftSpacing = 2;
// The space between the window icon and the title text.
constexpr int kTitleIconOffsetX = 4;
// The space between the title text and the caption buttons.
constexpr int kTitleCaptionSpacing = 5;
#if defined(OS_CHROMEOS)
// Chrome OS uses a dark gray.
constexpr SkColor kDefaultColorFrame = SkColorSetRGB(109, 109, 109);
constexpr SkColor kDefaultColorFrameInactive = SkColorSetRGB(176, 176, 176);
#else
// Windows and Linux use a blue.
constexpr SkColor kDefaultColorFrame = SkColorSetRGB(66, 116, 201);
constexpr SkColor kDefaultColorFrameInactive = SkColorSetRGB(161, 182, 228);
#endif
void LayoutButton(ImageButton* button, const gfx::Rect& bounds) {
button->SetVisible(true);
button->SetImageVerticalAlignment(ImageButton::ALIGN_BOTTOM);
button->SetBoundsRect(bounds);
}
} // namespace
///////////////////////////////////////////////////////////////////////////////
// CustomFrameView, public:
CustomFrameView::CustomFrameView() : frame_background_(new FrameBackground()) {}
CustomFrameView::~CustomFrameView() = default;
void CustomFrameView::Init(Widget* frame) {
frame_ = frame;
close_button_ = InitWindowCaptionButton(IDS_APP_ACCNAME_CLOSE,
IDR_CLOSE, IDR_CLOSE_H, IDR_CLOSE_P);
minimize_button_ = InitWindowCaptionButton(IDS_APP_ACCNAME_MINIMIZE,
IDR_MINIMIZE, IDR_MINIMIZE_H, IDR_MINIMIZE_P);
maximize_button_ = InitWindowCaptionButton(IDS_APP_ACCNAME_MAXIMIZE,
IDR_MAXIMIZE, IDR_MAXIMIZE_H, IDR_MAXIMIZE_P);
restore_button_ = InitWindowCaptionButton(IDS_APP_ACCNAME_RESTORE,
IDR_RESTORE, IDR_RESTORE_H, IDR_RESTORE_P);
if (frame_->widget_delegate()->ShouldShowWindowIcon()) {
window_icon_ = new ImageButton(this);
AddChildView(window_icon_);
}
}
///////////////////////////////////////////////////////////////////////////////
// CustomFrameView, NonClientFrameView implementation:
gfx::Rect CustomFrameView::GetBoundsForClientView() const {
return client_view_bounds_;
}
gfx::Rect CustomFrameView::GetWindowBoundsForClientBounds(
const gfx::Rect& client_bounds) const {
int top_height = NonClientTopBorderHeight();
int border_thickness = NonClientBorderThickness();
return gfx::Rect(client_bounds.x() - border_thickness,
client_bounds.y() - top_height,
client_bounds.width() + (2 * border_thickness),
client_bounds.height() + top_height + border_thickness);
}
int CustomFrameView::NonClientHitTest(const gfx::Point& point) {
// Sanity check.
if (!bounds().Contains(point))
return HTNOWHERE;
int frame_component = frame_->client_view()->NonClientHitTest(point);
// See if we're in the sysmenu region. (We check the ClientView first to be
// consistent with OpaqueBrowserFrameView; it's not really necessary here.)
gfx::Rect sysmenu_rect(IconBounds());
// In maximized mode we extend the rect to the screen corner to take advantage
// of Fitts' Law.
if (frame_->IsMaximized())
sysmenu_rect.SetRect(0, 0, sysmenu_rect.right(), sysmenu_rect.bottom());
sysmenu_rect.set_x(GetMirroredXForRect(sysmenu_rect));
if (sysmenu_rect.Contains(point))
return (frame_component == HTCLIENT) ? HTCLIENT : HTSYSMENU;
if (frame_component != HTNOWHERE)
return frame_component;
// Then see if the point is within any of the window controls.
if (close_button_->GetMirroredBounds().Contains(point))
return HTCLOSE;
if (restore_button_->GetMirroredBounds().Contains(point))
return HTMAXBUTTON;
if (maximize_button_->GetMirroredBounds().Contains(point))
return HTMAXBUTTON;
if (minimize_button_->GetMirroredBounds().Contains(point))
return HTMINBUTTON;
if (window_icon_ && window_icon_->GetMirroredBounds().Contains(point))
return HTSYSMENU;
int window_component = GetHTComponentForFrame(point, FrameBorderThickness(),
NonClientBorderThickness(), kResizeAreaCornerSize, kResizeAreaCornerSize,
frame_->widget_delegate()->CanResize());
// Fall back to the caption if no other component matches.
return (window_component == HTNOWHERE) ? HTCAPTION : window_component;
}
void CustomFrameView::GetWindowMask(const gfx::Size& size,
SkPath* window_mask) {
DCHECK(window_mask);
if (frame_->IsMaximized() || !ShouldShowTitleBarAndBorder())
return;
GetDefaultWindowMask(size, frame_->GetCompositor()->device_scale_factor(),
window_mask);
}
void CustomFrameView::ResetWindowControls() {
restore_button_->SetState(Button::STATE_NORMAL);
minimize_button_->SetState(Button::STATE_NORMAL);
maximize_button_->SetState(Button::STATE_NORMAL);
// The close button isn't affected by this constraint.
}
void CustomFrameView::UpdateWindowIcon() {
if (window_icon_)
window_icon_->SchedulePaint();
}
void CustomFrameView::UpdateWindowTitle() {
if (frame_->widget_delegate()->ShouldShowWindowTitle() &&
// If this is still unset, we haven't laid out window controls yet.
maximum_title_bar_x_ > -1) {
LayoutTitleBar();
SchedulePaintInRect(title_bounds_);
}
}
void CustomFrameView::SizeConstraintsChanged() {
ResetWindowControls();
LayoutWindowControls();
}
void CustomFrameView::PaintAsActiveChanged(bool active) {
SchedulePaint();
}
///////////////////////////////////////////////////////////////////////////////
// CustomFrameView, View overrides:
void CustomFrameView::OnPaint(gfx::Canvas* canvas) {
if (!ShouldShowTitleBarAndBorder())
return;
frame_background_->set_frame_color(GetFrameColor());
frame_background_->set_use_custom_frame(true);
frame_background_->set_is_active(ShouldPaintAsActive());
frame_background_->set_incognito(false);
const gfx::ImageSkia frame_image = GetFrameImage();
frame_background_->set_theme_image(frame_image);
frame_background_->set_top_area_height(frame_image.height());
if (frame_->IsMaximized())
PaintMaximizedFrameBorder(canvas);
else
PaintRestoredFrameBorder(canvas);
PaintTitleBar(canvas);
if (ShouldShowClientEdge())
PaintRestoredClientEdge(canvas);
}
void CustomFrameView::Layout() {
if (ShouldShowTitleBarAndBorder()) {
LayoutWindowControls();
LayoutTitleBar();
}
LayoutClientView();
}
gfx::Size CustomFrameView::CalculatePreferredSize() const {
return frame_->non_client_view()->GetWindowBoundsForClientBounds(
gfx::Rect(frame_->client_view()->GetPreferredSize())).size();
}
gfx::Size CustomFrameView::GetMinimumSize() const {
return frame_->non_client_view()->GetWindowBoundsForClientBounds(
gfx::Rect(frame_->client_view()->GetMinimumSize())).size();
}
gfx::Size CustomFrameView::GetMaximumSize() const {
gfx::Size max_size = frame_->client_view()->GetMaximumSize();
gfx::Size converted_size =
frame_->non_client_view()->GetWindowBoundsForClientBounds(
gfx::Rect(max_size)).size();
return gfx::Size(max_size.width() == 0 ? 0 : converted_size.width(),
max_size.height() == 0 ? 0 : converted_size.height());
}
///////////////////////////////////////////////////////////////////////////////
// CustomFrameView, ButtonListener implementation:
void CustomFrameView::ButtonPressed(Button* sender, const ui::Event& event) {
if (sender == close_button_)
frame_->CloseWithReason(views::Widget::ClosedReason::kCloseButtonClicked);
else if (sender == minimize_button_)
frame_->Minimize();
else if (sender == maximize_button_)
frame_->Maximize();
else if (sender == restore_button_)
frame_->Restore();
}
///////////////////////////////////////////////////////////////////////////////
// CustomFrameView, private:
int CustomFrameView::FrameBorderThickness() const {
return frame_->IsMaximized() ? 0 : kFrameBorderThickness;
}
int CustomFrameView::NonClientBorderThickness() const {
// In maximized mode, we don't show a client edge.
return FrameBorderThickness() +
(ShouldShowClientEdge() ? kClientEdgeThickness : 0);
}
int CustomFrameView::NonClientTopBorderHeight() const {
return std::max(FrameBorderThickness() + IconSize(),
CaptionButtonY() + kCaptionButtonHeightWithPadding) +
TitlebarBottomThickness();
}
int CustomFrameView::CaptionButtonY() const {
// Maximized buttons start at window top so that even if their images aren't
// drawn flush with the screen edge, they still obey Fitts' Law.
#if defined(OS_LINUX) && !defined(OS_CHROMEOS)
return FrameBorderThickness();
#else
return frame_->IsMaximized() ? FrameBorderThickness() : kFrameShadowThickness;
#endif
}
int CustomFrameView::TitlebarBottomThickness() const {
return kTitlebarTopAndBottomEdgeThickness +
(ShouldShowClientEdge() ? kClientEdgeThickness : 0);
}
int CustomFrameView::IconSize() const {
#if defined(OS_WIN)
// This metric scales up if either the titlebar height or the titlebar font
// size are increased.
return display::win::ScreenWin::GetSystemMetricsInDIP(SM_CYSMICON);
#else
// The icon never shrinks below 16 px on a side.
constexpr int kIconMinimumSize = 16;
return std::max(GetWindowTitleFontList().GetHeight(), kIconMinimumSize);
#endif
}
gfx::Rect CustomFrameView::IconBounds() const {
int size = IconSize();
int frame_thickness = FrameBorderThickness();
// Our frame border has a different "3D look" than Windows'. Theirs has a
// more complex gradient on the top that they push their icon/title below;
// then the maximized window cuts this off and the icon/title are centered
// in the remaining space. Because the apparent shape of our border is
// simpler, using the same positioning makes things look slightly uncentered
// with restored windows, so when the window is restored, instead of
// calculating the remaining space from below the frame border, we calculate
// from below the 3D edge.
int unavailable_px_at_top = frame_->IsMaximized() ?
frame_thickness : kTitlebarTopAndBottomEdgeThickness;
// When the icon is shorter than the minimum space we reserve for the caption
// button, we vertically center it. We want to bias rounding to put extra
// space above the icon, since the 3D edge (+ client edge, for restored
// windows) below looks (to the eye) more like additional space than does the
// 3D edge (or nothing at all, for maximized windows) above; hence the +1.
int y = unavailable_px_at_top + (NonClientTopBorderHeight() -
unavailable_px_at_top - size - TitlebarBottomThickness() + 1) / 2;
return gfx::Rect(frame_thickness + kIconLeftSpacing + minimum_title_bar_x_,
y, size, size);
}
bool CustomFrameView::ShouldShowTitleBarAndBorder() const {
return !frame_->IsFullscreen() &&
!ViewsDelegate::GetInstance()->WindowManagerProvidesTitleBar(
frame_->IsMaximized());
}
bool CustomFrameView::ShouldShowClientEdge() const {
return !frame_->IsMaximized() && ShouldShowTitleBarAndBorder();
}
void CustomFrameView::PaintRestoredFrameBorder(gfx::Canvas* canvas) {
ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
frame_background_->SetCornerImages(
rb.GetImageNamed(IDR_WINDOW_TOP_LEFT_CORNER).ToImageSkia(),
rb.GetImageNamed(IDR_WINDOW_TOP_RIGHT_CORNER).ToImageSkia(),
rb.GetImageNamed(IDR_WINDOW_BOTTOM_LEFT_CORNER).ToImageSkia(),
rb.GetImageNamed(IDR_WINDOW_BOTTOM_RIGHT_CORNER).ToImageSkia());
frame_background_->SetSideImages(
rb.GetImageNamed(IDR_WINDOW_LEFT_SIDE).ToImageSkia(),
rb.GetImageNamed(IDR_WINDOW_TOP_CENTER).ToImageSkia(),
rb.GetImageNamed(IDR_WINDOW_RIGHT_SIDE).ToImageSkia(),
rb.GetImageNamed(IDR_WINDOW_BOTTOM_CENTER).ToImageSkia());
frame_background_->PaintRestored(canvas, this);
}
void CustomFrameView::PaintMaximizedFrameBorder(gfx::Canvas* canvas) {
frame_background_->PaintMaximized(canvas, this);
ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
// TODO(jamescook): Migrate this into FrameBackground.
// The bottom of the titlebar actually comes from the top of the Client Edge
// graphic, with the actual client edge clipped off the bottom.
const gfx::ImageSkia* titlebar_bottom = rb.GetImageNamed(
IDR_APP_TOP_CENTER).ToImageSkia();
int edge_height = titlebar_bottom->height() -
(ShouldShowClientEdge() ? kClientEdgeThickness : 0);
canvas->TileImageInt(*titlebar_bottom, 0,
frame_->client_view()->y() - edge_height, width(), edge_height);
}
void CustomFrameView::PaintTitleBar(gfx::Canvas* canvas) {
WidgetDelegate* delegate = frame_->widget_delegate();
// It seems like in some conditions we can be asked to paint after the window
// that contains us is WM_DESTROYed. At this point, our delegate is NULL. The
// correct long term fix may be to shut down the RootView in WM_DESTROY.
if (!delegate || !delegate->ShouldShowWindowTitle())
return;
gfx::Rect rect = title_bounds_;
rect.set_x(GetMirroredXForRect(title_bounds_));
canvas->DrawStringRect(delegate->GetWindowTitle(), GetWindowTitleFontList(),
SK_ColorWHITE, rect);
}
void CustomFrameView::PaintRestoredClientEdge(gfx::Canvas* canvas) {
gfx::Rect client_area_bounds = frame_->client_view()->bounds();
// The shadows have a 1 pixel gap on the inside, so draw them 1 pixel inwards.
gfx::Rect shadowed_area_bounds = client_area_bounds;
shadowed_area_bounds.Inset(gfx::Insets(1, 1, 1, 1));
int shadowed_area_top = shadowed_area_bounds.y();
ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
// Top: left, center, right sides.
const gfx::ImageSkia* top_left = rb.GetImageSkiaNamed(IDR_APP_TOP_LEFT);
const gfx::ImageSkia* top_center = rb.GetImageSkiaNamed(IDR_APP_TOP_CENTER);
const gfx::ImageSkia* top_right = rb.GetImageSkiaNamed(IDR_APP_TOP_RIGHT);
int top_edge_y = shadowed_area_top - top_center->height();
canvas->DrawImageInt(*top_left,
shadowed_area_bounds.x() - top_left->width(),
top_edge_y);
canvas->TileImageInt(*top_center,
shadowed_area_bounds.x(),
top_edge_y,
shadowed_area_bounds.width(),
top_center->height());
canvas->DrawImageInt(*top_right, shadowed_area_bounds.right(), top_edge_y);
// Right side.
const gfx::ImageSkia* right = rb.GetImageSkiaNamed(IDR_CONTENT_RIGHT_SIDE);
int shadowed_area_bottom =
std::max(shadowed_area_top, shadowed_area_bounds.bottom());
int shadowed_area_height = shadowed_area_bottom - shadowed_area_top;
canvas->TileImageInt(*right,
shadowed_area_bounds.right(),
shadowed_area_top,
right->width(),
shadowed_area_height);
// Bottom: left, center, right sides.
const gfx::ImageSkia* bottom_left =
rb.GetImageSkiaNamed(IDR_CONTENT_BOTTOM_LEFT_CORNER);
const gfx::ImageSkia* bottom_center =
rb.GetImageSkiaNamed(IDR_CONTENT_BOTTOM_CENTER);
const gfx::ImageSkia* bottom_right =
rb.GetImageSkiaNamed(IDR_CONTENT_BOTTOM_RIGHT_CORNER);
canvas->DrawImageInt(*bottom_left,
shadowed_area_bounds.x() - bottom_left->width(),
shadowed_area_bottom);
canvas->TileImageInt(*bottom_center,
shadowed_area_bounds.x(),
shadowed_area_bottom,
shadowed_area_bounds.width(),
bottom_right->height());
canvas->DrawImageInt(*bottom_right,
shadowed_area_bounds.right(),
shadowed_area_bottom);
// Left side.
const gfx::ImageSkia* left = rb.GetImageSkiaNamed(IDR_CONTENT_LEFT_SIDE);
canvas->TileImageInt(*left,
shadowed_area_bounds.x() - left->width(),
shadowed_area_top,
left->width(),
shadowed_area_height);
}
SkColor CustomFrameView::GetFrameColor() const {
return frame_->IsActive() ? kDefaultColorFrame : kDefaultColorFrameInactive;
}
gfx::ImageSkia CustomFrameView::GetFrameImage() const {
return *ui::ResourceBundle::GetSharedInstance()
.GetImageNamed(frame_->IsActive() ? IDR_FRAME
: IDR_FRAME_INACTIVE)
.ToImageSkia();
}
void CustomFrameView::LayoutWindowControls() {
minimum_title_bar_x_ = 0;
maximum_title_bar_x_ = width();
if (bounds().IsEmpty())
return;
int caption_y = CaptionButtonY();
bool is_maximized = frame_->IsMaximized();
// There should always be the same number of non-shadow pixels visible to the
// side of the caption buttons. In maximized mode we extend the edge button
// to the screen corner to obey Fitts' Law.
int extra_width = is_maximized ?
(kFrameBorderThickness - kFrameShadowThickness) : 0;
int next_button_x = FrameBorderThickness();
bool is_restored = !is_maximized && !frame_->IsMinimized();
ImageButton* invisible_button = is_restored ? restore_button_
: maximize_button_;
invisible_button->SetVisible(false);
WindowButtonOrderProvider* button_order =
WindowButtonOrderProvider::GetInstance();
const std::vector<views::FrameButton>& leading_buttons =
button_order->leading_buttons();
const std::vector<views::FrameButton>& trailing_buttons =
button_order->trailing_buttons();
ImageButton* button = nullptr;
for (auto frame_button : leading_buttons) {
button = GetImageButton(frame_button);
if (!button)
continue;
gfx::Rect target_bounds(gfx::Point(next_button_x, caption_y),
button->GetPreferredSize());
if (frame_button == leading_buttons.front())
target_bounds.set_width(target_bounds.width() + extra_width);
LayoutButton(button, target_bounds);
next_button_x += button->width();
minimum_title_bar_x_ = std::min(width(), next_button_x);
}
// Trailing buttions are laid out in a RTL fashion
next_button_x = width() - FrameBorderThickness();
for (auto frame_button : base::Reversed(trailing_buttons)) {
button = GetImageButton(frame_button);
if (!button)
continue;
gfx::Rect target_bounds(gfx::Point(next_button_x, caption_y),
button->GetPreferredSize());
if (frame_button == trailing_buttons.back())
target_bounds.set_width(target_bounds.width() + extra_width);
target_bounds.Offset(-target_bounds.width(), 0);
LayoutButton(button, target_bounds);
next_button_x = button->x();
maximum_title_bar_x_ = std::max(minimum_title_bar_x_, next_button_x);
}
}
void CustomFrameView::LayoutTitleBar() {
DCHECK_GE(maximum_title_bar_x_, 0);
// The window title position is calculated based on the icon position, even
// when there is no icon.
gfx::Rect icon_bounds(IconBounds());
bool show_window_icon = window_icon_ != nullptr;
if (show_window_icon)
window_icon_->SetBoundsRect(icon_bounds);
if (!frame_->widget_delegate()->ShouldShowWindowTitle())
return;
// The offset between the window left edge and the title text.
int title_x = show_window_icon ? icon_bounds.right() + kTitleIconOffsetX
: icon_bounds.x();
int title_height = GetWindowTitleFontList().GetHeight();
// We bias the title position so that when the difference between the icon and
// title heights is odd, the extra pixel of the title is above the vertical
// midline rather than below. This compensates for how the icon is already
// biased downwards (see IconBounds()) and helps prevent descenders on the
// title from overlapping the 3D edge at the bottom of the titlebar.
title_bounds_.SetRect(title_x,
icon_bounds.y() + ((icon_bounds.height() - title_height - 1) / 2),
std::max(0, maximum_title_bar_x_ - kTitleCaptionSpacing -
title_x), title_height);
}
void CustomFrameView::LayoutClientView() {
if (!ShouldShowTitleBarAndBorder()) {
client_view_bounds_ = bounds();
return;
}
int top_height = NonClientTopBorderHeight();
int border_thickness = NonClientBorderThickness();
client_view_bounds_.SetRect(border_thickness, top_height,
std::max(0, width() - (2 * border_thickness)),
std::max(0, height() - top_height - border_thickness));
}
ImageButton* CustomFrameView::InitWindowCaptionButton(
int accessibility_string_id,
int normal_image_id,
int hot_image_id,
int pushed_image_id) {
ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
ImageButton* button = new ImageButton(this);
button->SetAccessibleName(l10n_util::GetStringUTF16(accessibility_string_id));
button->SetImage(Button::STATE_NORMAL,
rb.GetImageNamed(normal_image_id).ToImageSkia());
button->SetImage(Button::STATE_HOVERED,
rb.GetImageNamed(hot_image_id).ToImageSkia());
button->SetImage(Button::STATE_PRESSED,
rb.GetImageNamed(pushed_image_id).ToImageSkia());
AddChildView(button);
return button;
}
ImageButton* CustomFrameView::GetImageButton(views::FrameButton frame_button) {
ImageButton* button = nullptr;
switch (frame_button) {
case views::FrameButton::kMinimize: {
button = minimize_button_;
// If we should not show the minimize button, then we return NULL as we
// don't want this button to become visible and to be laid out.
bool should_show = frame_->widget_delegate()->CanMinimize();
button->SetVisible(should_show);
if (!should_show)
return nullptr;
break;
}
case views::FrameButton::kMaximize: {
bool is_restored = !frame_->IsMaximized() && !frame_->IsMinimized();
button = is_restored ? maximize_button_ : restore_button_;
// If we should not show the maximize/restore button, then we return
// NULL as we don't want this button to become visible and to be laid
// out.
bool should_show = frame_->widget_delegate()->CanMaximize();
button->SetVisible(should_show);
if (!should_show)
return nullptr;
break;
}
case views::FrameButton::kClose: {
button = close_button_;
break;
}
}
return button;
}
// static
gfx::FontList CustomFrameView::GetWindowTitleFontList() {
#if defined(OS_WIN)
return gfx::FontList(gfx::win::GetSystemFont(gfx::win::SystemFont::kCaption));
#else
return gfx::FontList();
#endif
}
} // namespace views