blob: 008ab7bf70854eb08e6c0f406a2f027cffbae0d1 [file] [log] [blame]
// Copyright 2016 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 "ash/frame/header_view.h"
#include <memory>
#include "ash/frame/non_client_frame_view_ash.h"
#include "ash/public/cpp/caption_buttons/caption_button_model.h"
#include "ash/public/cpp/caption_buttons/frame_back_button.h"
#include "ash/public/cpp/caption_buttons/frame_caption_button_container_view.h"
#include "ash/public/cpp/default_frame_header.h"
#include "ash/public/cpp/window_properties.h"
#include "ash/shell.h"
#include "ash/wm/tablet_mode/tablet_mode_controller.h"
#include "ash/wm/window_state.h"
#include "ui/aura/client/aura_constants.h"
#include "ui/aura/window.h"
#include "ui/base/ui_base_features.h"
#include "ui/views/controls/image_view.h"
#include "ui/views/widget/widget.h"
namespace ash {
// The view used to draw the content (background and title string)
// of the header. This is a separate view so that it can use
// different scaling strategy than the rest of the frame such
// as caption buttons.
class HeaderView::HeaderContentView : public views::View {
public:
HeaderContentView(HeaderView* header_view) : header_view_(header_view) {}
~HeaderContentView() override = default;
// views::View:
views::PaintInfo::ScaleType GetPaintScaleType() const override {
return scale_type_;
}
void OnPaint(gfx::Canvas* canvas) override {
header_view_->PaintHeaderContent(canvas);
}
void SetScaleType(views::PaintInfo::ScaleType scale_type) {
scale_type_ = scale_type;
}
private:
HeaderView* header_view_;
views::PaintInfo::ScaleType scale_type_ =
views::PaintInfo::ScaleType::kScaleWithEdgeSnapping;
DISALLOW_COPY_AND_ASSIGN(HeaderContentView);
};
HeaderView::HeaderView(views::Widget* target_widget)
: target_widget_(target_widget),
avatar_icon_(nullptr),
header_content_view_(new HeaderContentView(this)),
caption_button_container_(nullptr),
fullscreen_visible_fraction_(0),
should_paint_(true) {
AddChildView(header_content_view_);
caption_button_container_ =
new FrameCaptionButtonContainerView(target_widget_);
caption_button_container_->UpdateCaptionButtonState(false /*=animate*/);
AddChildView(caption_button_container_);
aura::Window* window = target_widget->GetNativeWindow();
frame_header_ = std::make_unique<DefaultFrameHeader>(
target_widget, this, caption_button_container_);
UpdateBackButton();
frame_header_->UpdateFrameColors();
window_observer_.Add(window);
Shell::Get()->tablet_mode_controller()->AddObserver(this);
}
HeaderView::~HeaderView() {
if (Shell::Get()->tablet_mode_controller())
Shell::Get()->tablet_mode_controller()->RemoveObserver(this);
}
void HeaderView::SchedulePaintForTitle() {
frame_header_->SchedulePaintForTitle();
}
void HeaderView::ResetWindowControls() {
caption_button_container_->ResetWindowControls();
}
int HeaderView::GetPreferredOnScreenHeight() {
if (is_immersive_delegate_ && in_immersive_mode_) {
return static_cast<int>(GetPreferredHeight() *
fullscreen_visible_fraction_);
}
return GetPreferredHeight();
}
int HeaderView::GetPreferredHeight() {
// Calculating the preferred height requires at least one Layout().
if (!did_layout_)
Layout();
return frame_header_->GetHeaderHeightForPainting();
}
int HeaderView::GetMinimumWidth() const {
return frame_header_->GetMinimumHeaderWidth();
}
void HeaderView::SetAvatarIcon(const gfx::ImageSkia& avatar) {
const bool show = !avatar.isNull();
if (!show) {
if (!avatar_icon_)
return;
delete avatar_icon_;
avatar_icon_ = nullptr;
} else {
DCHECK_EQ(avatar.width(), avatar.height());
if (!avatar_icon_) {
avatar_icon_ = new views::ImageView();
AddChildView(avatar_icon_);
}
avatar_icon_->SetImage(avatar);
}
frame_header_->SetLeftHeaderView(avatar_icon_);
Layout();
}
void HeaderView::UpdateCaptionButtons() {
caption_button_container_->ResetWindowControls();
caption_button_container_->UpdateCaptionButtonState(true /*=animate*/);
UpdateBackButton();
Layout();
}
void HeaderView::SetWidthInPixels(int width_in_pixels) {
frame_header_->SetWidthInPixels(width_in_pixels);
// If the width is given in pixels, use uniform scaling
// so that UndoDeviceScaleFactor can correctly undo the scaling.
header_content_view_->SetScaleType(
width_in_pixels > 0
? views::PaintInfo::ScaleType::kUniformScaling
: views::PaintInfo::ScaleType::kScaleWithEdgeSnapping);
}
///////////////////////////////////////////////////////////////////////////////
// HeaderView, views::View overrides:
void HeaderView::Layout() {
did_layout_ = true;
header_content_view_->SetBoundsRect(GetLocalBounds());
frame_header_->LayoutHeader();
}
void HeaderView::ChildPreferredSizeChanged(views::View* child) {
if (child != caption_button_container_)
return;
// May be null during view initialization.
if (parent())
parent()->Layout();
}
void HeaderView::OnTabletModeStarted() {
UpdateCaptionButtonsVisibility();
caption_button_container_->UpdateCaptionButtonState(true /*=animate*/);
parent()->Layout();
if (target_widget_ &&
Shell::Get()->tablet_mode_controller()->ShouldAutoHideTitlebars(
target_widget_)) {
target_widget_->non_client_view()->Layout();
}
}
void HeaderView::OnTabletModeEnded() {
UpdateCaptionButtonsVisibility();
caption_button_container_->UpdateCaptionButtonState(true /*=animate*/);
parent()->Layout();
if (target_widget_)
target_widget_->non_client_view()->Layout();
}
void HeaderView::OnWindowPropertyChanged(aura::Window* window,
const void* key,
intptr_t old) {
if (!target_widget_)
return;
DCHECK_EQ(target_widget_->GetNativeWindow(), window);
if (key == aura::client::kAvatarIconKey) {
gfx::ImageSkia* const avatar_icon =
window->GetProperty(aura::client::kAvatarIconKey);
SetAvatarIcon(avatar_icon ? *avatar_icon : gfx::ImageSkia());
} else if (key == kFrameActiveColorKey || key == kFrameInactiveColorKey) {
frame_header_->UpdateFrameColors();
} else if (key == aura::client::kShowStateKey) {
frame_header_->OnShowStateChanged(
window->GetProperty(aura::client::kShowStateKey));
}
}
void HeaderView::OnWindowDestroying(aura::Window* window) {
window_observer_.Remove(window);
// A HeaderView may outlive the target widget.
target_widget_ = nullptr;
}
views::View* HeaderView::avatar_icon() const {
return avatar_icon_;
}
void HeaderView::SetShouldPaintHeader(bool paint) {
if (should_paint_ == paint)
return;
should_paint_ = paint;
UpdateCaptionButtonsVisibility();
SchedulePaint();
}
views::FrameCaptionButton* HeaderView::GetBackButton() {
return frame_header_->GetBackButton();
}
///////////////////////////////////////////////////////////////////////////////
// HeaderView,
// ImmersiveFullscreenControllerDelegate overrides:
void HeaderView::OnImmersiveRevealStarted() {
fullscreen_visible_fraction_ = 0;
add_layer_for_immersive_ = !layer();
if (add_layer_for_immersive_)
SetPaintToLayer();
// AppWindow may call this before being added to the widget.
// https://crbug.com/825260.
if (layer()->parent()) {
// The immersive layer should always be top.
layer()->parent()->StackAtTop(layer());
}
parent()->Layout();
}
void HeaderView::OnImmersiveRevealEnded() {
fullscreen_visible_fraction_ = 0;
if (add_layer_for_immersive_)
DestroyLayer();
parent()->Layout();
}
void HeaderView::OnImmersiveFullscreenEntered() {
in_immersive_mode_ = true;
parent()->InvalidateLayout();
// The frame may not have been created yet (during window initialization).
if (target_widget_ && target_widget_->non_client_view()->frame_view())
target_widget_->non_client_view()->Layout();
}
void HeaderView::OnImmersiveFullscreenExited() {
in_immersive_mode_ = false;
fullscreen_visible_fraction_ = 0;
if (add_layer_for_immersive_)
DestroyLayer();
parent()->InvalidateLayout();
if (target_widget_ && target_widget_->non_client_view()->frame_view())
target_widget_->non_client_view()->Layout();
}
void HeaderView::SetVisibleFraction(double visible_fraction) {
if (fullscreen_visible_fraction_ != visible_fraction) {
fullscreen_visible_fraction_ = visible_fraction;
parent()->Layout();
}
}
std::vector<gfx::Rect> HeaderView::GetVisibleBoundsInScreen() const {
// TODO(pkotwicz): Implement views::View::ConvertRectToScreen().
gfx::Rect visible_bounds(GetVisibleBounds());
gfx::Point visible_origin_in_screen(visible_bounds.origin());
views::View::ConvertPointToScreen(this, &visible_origin_in_screen);
std::vector<gfx::Rect> bounds_in_screen;
bounds_in_screen.push_back(
gfx::Rect(visible_origin_in_screen, visible_bounds.size()));
return bounds_in_screen;
}
void HeaderView::PaintHeaderContent(gfx::Canvas* canvas) {
if (!should_paint_ || !target_widget_)
return;
bool paint_as_active =
target_widget_->non_client_view()->frame_view()->ShouldPaintAsActive();
frame_header_->SetPaintAsActive(paint_as_active);
FrameHeader::Mode header_mode =
paint_as_active ? FrameHeader::MODE_ACTIVE : FrameHeader::MODE_INACTIVE;
frame_header_->PaintHeader(canvas, header_mode);
}
void HeaderView::UpdateBackButton() {
bool has_back_button = caption_button_container_->model()->IsVisible(
views::CAPTION_BUTTON_ICON_BACK);
views::FrameCaptionButton* back_button = frame_header_->GetBackButton();
if (has_back_button) {
if (!back_button) {
back_button = new FrameBackButton();
AddChildView(back_button);
frame_header_->SetBackButton(back_button);
}
back_button->SetEnabled(caption_button_container_->model()->IsEnabled(
views::CAPTION_BUTTON_ICON_BACK));
} else {
delete back_button;
frame_header_->SetBackButton(nullptr);
}
}
void HeaderView::UpdateCaptionButtonsVisibility() {
if (!target_widget_)
return;
caption_button_container_->SetVisible(should_paint_);
}
} // namespace ash