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win_caption_button_container.cc
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win_caption_button_container.cc
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// Copyright 2020 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.
// Modified from
// chrome/browser/ui/views/frame/glass_browser_caption_button_container.cc
#include "shell/browser/ui/views/win_caption_button_container.h"
#include <memory>
#include <utility>
#include "shell/browser/ui/views/win_caption_button.h"
#include "shell/browser/ui/views/win_frame_view.h"
#include "ui/base/l10n/l10n_util.h"
#include "ui/strings/grit/ui_strings.h"
#include "ui/views/background.h"
#include "ui/views/layout/flex_layout.h"
#include "ui/views/view_class_properties.h"
namespace electron {
namespace {
std::unique_ptr<WinCaptionButton> CreateCaptionButton(
views::Button::PressedCallback callback,
WinFrameView* frame_view,
ViewID button_type,
int accessible_name_resource_id) {
return std::make_unique<WinCaptionButton>(
std::move(callback), frame_view, button_type,
l10n_util::GetStringUTF16(accessible_name_resource_id));
}
bool HitTestCaptionButton(WinCaptionButton* button, const gfx::Point& point) {
return button && button->GetVisible() && button->bounds().Contains(point);
}
} // anonymous namespace
WinCaptionButtonContainer::WinCaptionButtonContainer(WinFrameView* frame_view)
: frame_view_(frame_view),
minimize_button_(AddChildView(CreateCaptionButton(
base::BindRepeating(&views::Widget::Minimize,
base::Unretained(frame_view_->frame())),
frame_view_,
VIEW_ID_MINIMIZE_BUTTON,
IDS_APP_ACCNAME_MINIMIZE))),
maximize_button_(AddChildView(CreateCaptionButton(
base::BindRepeating(&views::Widget::Maximize,
base::Unretained(frame_view_->frame())),
frame_view_,
VIEW_ID_MAXIMIZE_BUTTON,
IDS_APP_ACCNAME_MAXIMIZE))),
restore_button_(AddChildView(CreateCaptionButton(
base::BindRepeating(&views::Widget::Restore,
base::Unretained(frame_view_->frame())),
frame_view_,
VIEW_ID_RESTORE_BUTTON,
IDS_APP_ACCNAME_RESTORE))),
close_button_(AddChildView(CreateCaptionButton(
base::BindRepeating(&views::Widget::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::kStart)
.SetDefault(
views::kFlexBehaviorKey,
views::FlexSpecification(views::LayoutOrientation::kHorizontal,
views::MinimumFlexSizeRule::kPreferred,
views::MaximumFlexSizeRule::kPreferred,
/* adjust_width_for_height */ false,
views::MinimumFlexSizeRule::kScaleToZero));
}
WinCaptionButtonContainer::~WinCaptionButtonContainer() {}
int WinCaptionButtonContainer::NonClientHitTest(const gfx::Point& point) const {
DCHECK(HitTestPoint(point))
<< "should only be called with a point inside this view's bounds";
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;
}
gfx::Size WinCaptionButtonContainer::GetButtonSize() const {
// Close button size is set the same as all the buttons
return close_button_->GetSize();
}
void WinCaptionButtonContainer::SetButtonSize(gfx::Size size) {
minimize_button_->SetSize(size);
maximize_button_->SetSize(size);
restore_button_->SetSize(size);
close_button_->SetSize(size);
}
void WinCaptionButtonContainer::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 WinCaptionButtonContainer::AddedToWidget() {
views::Widget* const widget = GetWidget();
DCHECK(!widget_observation_.IsObserving());
widget_observation_.Observe(widget);
UpdateButtons();
if (frame_view_->window()->IsWindowControlsOverlayEnabled()) {
SetBackground(views::CreateSolidBackground(
frame_view_->window()->overlay_button_color()));
SetPaintToLayer();
}
}
void WinCaptionButtonContainer::RemovedFromWidget() {
DCHECK(widget_observation_.IsObserving());
widget_observation_.Reset();
}
void WinCaptionButtonContainer::OnWidgetBoundsChanged(
views::Widget* widget,
const gfx::Rect& new_bounds) {
UpdateButtons();
}
void WinCaptionButtonContainer::UpdateButtons() {
const bool is_maximized = frame_view_->frame()->IsMaximized();
restore_button_->SetVisible(is_maximized);
maximize_button_->SetVisible(!is_maximized);
const bool minimizable = frame_view_->window()->IsMinimizable();
minimize_button_->SetEnabled(minimizable);
// In touch mode, windows cannot be taken out of fullscreen or tiled mode, so
// the maximize/restore button should be disabled.
const bool is_touch = ui::TouchUiController::Get()->touch_ui();
restore_button_->SetEnabled(!is_touch);
// The maximize button should only be enabled if the window is
// maximizable *and* touch mode is disabled.
const bool maximizable = frame_view_->window()->IsMaximizable();
maximize_button_->SetEnabled(!is_touch && maximizable);
const bool closable = frame_view_->window()->IsClosable();
close_button_->SetEnabled(closable);
// If all three of closable, maximizable, and minimizable are disabled,
// Windows natively only shows the disabled closable button. Copy that
// behavior here.
if (!maximizable && !closable && !minimizable) {
minimize_button_->SetVisible(false);
maximize_button_->SetVisible(false);
}
InvalidateLayout();
}
} // namespace electron