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// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/ui/views/frame/browser_caption_button_container_win.h"
#include <windows.h>
#include <memory>
#include "chrome/browser/ui/frame/window_frame_util.h"
#include "chrome/browser/ui/views/frame/browser_frame_view_win.h"
#include "chrome/browser/ui/views/frame/browser_view.h"
#include "chrome/browser/ui/views/frame/windows_caption_button.h"
#include "chrome/browser/win/titlebar_config.h"
#include "chrome/grit/generated_resources.h"
#include "ui/base/l10n/l10n_util.h"
#include "ui/base/metadata/metadata_impl_macros.h"
#include "ui/strings/grit/ui_strings.h"
#include "ui/views/accessibility/view_accessibility.h"
#include "ui/views/layout/flex_layout.h"
#include "ui/views/view_class_properties.h"
namespace {
std::unique_ptr<WindowsCaptionButton> CreateCaptionButton(
views::Button::PressedCallback callback,
BrowserFrameViewWin* frame_view,
ViewID button_type,
int accessible_name_resource_id) {
return std::make_unique<WindowsCaptionButton>(
std::move(callback), frame_view, button_type,
l10n_util::GetStringUTF16(accessible_name_resource_id));
}
bool HitTestCaptionButton(WindowsCaptionButton* button,
const gfx::Point& point) {
return button && button->GetVisible() &&
button->GetMirroredBounds().Contains(point);
}
} // anonymous namespace
BrowserCaptionButtonContainer::BrowserCaptionButtonContainer(
BrowserFrameViewWin* frame_view)
: frame_view_(frame_view),
minimize_button_(AddChildView(CreateCaptionButton(
base::BindRepeating(&BrowserFrame::Minimize,
base::Unretained(frame_view_->frame())),
frame_view_,
VIEW_ID_MINIMIZE_BUTTON,
IDS_APP_ACCNAME_MINIMIZE))),
maximize_button_(AddChildView(CreateCaptionButton(
base::BindRepeating(&BrowserFrame::Maximize,
base::Unretained(frame_view_->frame())),
frame_view_,
VIEW_ID_MAXIMIZE_BUTTON,
IDS_APP_ACCNAME_MAXIMIZE))),
restore_button_(AddChildView(CreateCaptionButton(
base::BindRepeating(&BrowserFrame::Restore,
base::Unretained(frame_view_->frame())),
frame_view_,
VIEW_ID_RESTORE_BUTTON,
IDS_APP_ACCNAME_RESTORE))),
close_button_(AddChildView(CreateCaptionButton(
base::BindRepeating(&BrowserFrame::CloseWithReason,
base::Unretained(frame_view_->frame()),
views::Widget::ClosedReason::kCloseButtonClicked),
frame_view_,
VIEW_ID_CLOSE_BUTTON,
IDS_APP_ACCNAME_CLOSE))) {
// Layout is horizontal, with buttons placed at the trailing end of the view.
// This allows the container to expand to become a faux titlebar/drag handle.
auto* const layout = SetLayoutManager(std::make_unique<views::FlexLayout>());
layout->SetOrientation(views::LayoutOrientation::kHorizontal)
.SetMainAxisAlignment(views::LayoutAlignment::kEnd)
.SetCrossAxisAlignment(views::LayoutAlignment::kStretch)
.SetDefault(
views::kFlexBehaviorKey,
views::FlexSpecification(views::LayoutOrientation::kHorizontal,
views::MinimumFlexSizeRule::kPreferred,
views::MaximumFlexSizeRule::kPreferred,
/* adjust_width_for_height */ false,
views::MinimumFlexSizeRule::kScaleToZero));
if (frame_view_->browser_view()->AppUsesWindowControlsOverlay()) {
UpdateButtonToolTipsForWindowControlsOverlay();
}
}
BrowserCaptionButtonContainer::~BrowserCaptionButtonContainer() = default;
int BrowserCaptionButtonContainer::NonClientHitTest(
const gfx::Point& point) const {
DCHECK(HitTestPoint(point))
<< "should only be called with a point inside this view's bounds";
// BrowserView covers the frame view when Window Controls Overlay is enabled.
// The native window that encompasses Web Contents gets the mouse events meant
// for the caption buttons, so returning HTClient allows these buttons to be
// highlighted on hover.
if (frame_view_->browser_view()->IsWindowControlsOverlayEnabled() &&
(HitTestCaptionButton(minimize_button_, point) ||
HitTestCaptionButton(maximize_button_, point) ||
HitTestCaptionButton(restore_button_, point) ||
HitTestCaptionButton(close_button_, point))) {
return HTCLIENT;
}
if (HitTestCaptionButton(minimize_button_, point)) {
return HTMINBUTTON;
}
if (HitTestCaptionButton(maximize_button_, point)) {
return HTMAXBUTTON;
}
if (HitTestCaptionButton(restore_button_, point)) {
return HTMAXBUTTON;
}
if (HitTestCaptionButton(close_button_, point)) {
return HTCLOSE;
}
return HTCAPTION;
}
void BrowserCaptionButtonContainer::OnWindowControlsOverlayEnabledChanged() {
if (frame_view_->browser_view()->IsWindowControlsOverlayEnabled()) {
SetBackground(
views::CreateSolidBackground(frame_view_->GetTitlebarColor()));
// BrowserView paints to a layer, so this view must do the same to ensure
// that it paints on top of the BrowserView.
SetPaintToLayer();
} else {
SetBackground(nullptr);
DestroyLayer();
}
UpdateButtonToolTipsForWindowControlsOverlay();
}
void BrowserCaptionButtonContainer::OnThemeChanged() {
if (frame_view_->browser_view()->IsWindowControlsOverlayEnabled()) {
SetBackground(
views::CreateSolidBackground(frame_view_->GetTitlebarColor()));
}
views::View::OnThemeChanged();
}
void BrowserCaptionButtonContainer::ResetWindowControls() {
minimize_button_->SetState(views::Button::STATE_NORMAL);
maximize_button_->SetState(views::Button::STATE_NORMAL);
restore_button_->SetState(views::Button::STATE_NORMAL);
close_button_->SetState(views::Button::STATE_NORMAL);
InvalidateLayout();
}
void BrowserCaptionButtonContainer::AddedToWidget() {
views::Widget* const widget = GetWidget();
DCHECK(!widget_observation_.IsObserving());
widget_observation_.Observe(widget);
UpdateButtons();
if (frame_view_->browser_view()->IsWindowControlsOverlayEnabled()) {
SetBackground(
views::CreateSolidBackground(frame_view_->GetTitlebarColor()));
// BrowserView paints to a layer, so this must do the same to ensure that it
// paints on top of the BrowserView.
SetPaintToLayer();
}
}
void BrowserCaptionButtonContainer::RemovedFromWidget() {
DCHECK(widget_observation_.IsObserving());
widget_observation_.Reset();
}
void BrowserCaptionButtonContainer::OnWidgetBoundsChanged(
views::Widget* widget,
const gfx::Rect& new_bounds) {
UpdateButtons();
}
void BrowserCaptionButtonContainer::UpdateButtons() {
if (!ShouldBrowserCustomDrawTitlebar(frame_view_->browser_view())) {
minimize_button_->SetVisible(false);
maximize_button_->SetVisible(false);
restore_button_->SetVisible(false);
close_button_->SetVisible(false);
return;
}
minimize_button_->SetVisible(frame_view_->browser_view()->CanMinimize());
const bool is_maximized = frame_view_->IsMaximized();
const bool can_maximize = frame_view_->browser_view()->CanMaximize();
restore_button_->SetVisible(is_maximized && can_maximize);
maximize_button_->SetVisible(!is_maximized && can_maximize);
close_button_->SetVisible(true);
// In touch mode, windows cannot be taken out of fullscreen or tiled mode, so
// the maximize/restore button should be disabled, unless the window is not
// maximized. TODO(crbug.com/40849150): Also check if the window is tiled.
const bool is_touch = ui::TouchUiController::Get()->touch_ui();
restore_button_->SetEnabled(!is_touch);
maximize_button_->SetEnabled(!is_touch || !is_maximized);
}
void BrowserCaptionButtonContainer::
UpdateButtonToolTipsForWindowControlsOverlay() {
if (frame_view_->browser_view()->IsWindowControlsOverlayEnabled()) {
minimize_button_->SetTooltipText(
minimize_button_->GetViewAccessibility().GetCachedName());
maximize_button_->SetTooltipText(
maximize_button_->GetViewAccessibility().GetCachedName());
restore_button_->SetTooltipText(
restore_button_->GetViewAccessibility().GetCachedName());
close_button_->SetTooltipText(
close_button_->GetViewAccessibility().GetCachedName());
} else {
minimize_button_->SetTooltipText(u"");
maximize_button_->SetTooltipText(u"");
restore_button_->SetTooltipText(u"");
close_button_->SetTooltipText(u"");
}
}
BEGIN_METADATA(BrowserCaptionButtonContainer)
END_METADATA
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