199 lines
6.5 KiB
C++
199 lines
6.5 KiB
C++
// Copyright (c) 2021 The Chromium Embedded Framework Authors. All rights
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// reserved. Use of this source code is governed by a BSD-style license that
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// can be found in the LICENSE file.
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#include "tests/cefclient/browser/views_overlay_controls.h"
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#include <algorithm>
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#include <string>
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#include "include/views/cef_box_layout.h"
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#include "include/views/cef_window.h"
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#include "tests/cefclient/browser/views_style.h"
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namespace client {
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namespace {
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constexpr int kInsets = 4;
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constexpr int kLocationBarPadding = 100;
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// White with 80% opacity.
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constexpr auto kBackgroundColor = CefColorSetARGB(255 * .80, 255, 255, 255);
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std::string GetLabel(ViewsOverlayControls::Command command, bool maximized) {
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switch (command) {
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case ViewsOverlayControls::Command::kMinimize:
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return "-";
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case ViewsOverlayControls::Command::kMaximize:
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return maximized ? "O" : "o";
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case ViewsOverlayControls::Command::kClose:
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return "X";
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}
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NOTREACHED();
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return std::string();
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}
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} // namespace
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ViewsOverlayControls::ViewsOverlayControls() = default;
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void ViewsOverlayControls::Initialize(CefRefPtr<CefWindow> window,
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CefRefPtr<CefMenuButton> menu_button,
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CefRefPtr<CefView> location_bar,
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bool is_chrome_toolbar) {
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DCHECK(!window_);
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DCHECK(menu_button);
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DCHECK(location_bar);
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window_ = window;
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window_maximized_ = window_->IsMaximized();
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// Window control buttons. These controls are currently text which means that
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// we can't use a transparent background because subpixel text rendering will
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// break. See comments on the related DCHECK in Label::PaintText.
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panel_ = CefPanel::CreatePanel(nullptr);
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views_style::ApplyTo(panel_);
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// Use a horizontal box layout.
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CefBoxLayoutSettings panel_layout_settings;
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panel_layout_settings.horizontal = true;
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panel_->SetToBoxLayout(panel_layout_settings);
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panel_->AddChildView(CreateButton(ViewsOverlayControls::Command::kMinimize));
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panel_->AddChildView(CreateButton(ViewsOverlayControls::Command::kMaximize));
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panel_->AddChildView(CreateButton(ViewsOverlayControls::Command::kClose));
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panel_controller_ =
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window->AddOverlayView(panel_, CEF_DOCKING_MODE_TOP_RIGHT);
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panel_controller_->SetVisible(true);
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// Menu button.
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menu_button->SetBackgroundColor(kBackgroundColor);
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menu_controller_ =
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window_->AddOverlayView(menu_button, CEF_DOCKING_MODE_TOP_LEFT);
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menu_controller_->SetInsets(CefInsets(kInsets, kInsets, 0, 0));
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menu_controller_->SetVisible(true);
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// Location bar. Will be made visible in UpdateControls().
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location_bar_ = location_bar;
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is_chrome_toolbar_ = is_chrome_toolbar;
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// Use a 100% transparent background for the Chrome toolbar.
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location_bar_->SetBackgroundColor(is_chrome_toolbar_ ? 0 : kBackgroundColor);
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location_controller_ =
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window_->AddOverlayView(location_bar_, CEF_DOCKING_MODE_CUSTOM);
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}
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void ViewsOverlayControls::Destroy() {
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window_ = nullptr;
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panel_ = nullptr;
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panel_controller_->Destroy();
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panel_controller_ = nullptr;
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menu_controller_->Destroy();
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menu_controller_ = nullptr;
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location_bar_ = nullptr;
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location_controller_->Destroy();
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location_controller_ = nullptr;
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}
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void ViewsOverlayControls::UpdateControls() {
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// Update location bar size, position and visibility.
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auto bounds = window_->GetBounds();
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bounds.x = kLocationBarPadding;
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bounds.width -= kLocationBarPadding * 2;
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bounds.y = kInsets;
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if (is_chrome_toolbar_) {
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// Fit the standard Chrome toolbar.
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const auto preferred_size = location_bar_->GetPreferredSize();
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bounds.height =
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std::max(menu_controller_->GetSize().height, preferred_size.height);
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} else {
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bounds.height = menu_controller_->GetSize().height;
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}
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if (bounds.width < kLocationBarPadding * 2) {
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// Not enough space.
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location_controller_->SetVisible(false);
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} else {
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location_bar_->SetSize(CefSize(bounds.width, bounds.height));
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location_controller_->SetBounds(bounds);
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location_controller_->SetVisible(true);
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}
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MaybeUpdateMaximizeButton();
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}
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void ViewsOverlayControls::UpdateDraggableRegions(
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std::vector<CefDraggableRegion>& window_regions) {
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if (panel_controller_ && panel_controller_->IsVisible()) {
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window_regions.push_back(CefDraggableRegion(panel_controller_->GetBounds(),
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/*draggable=*/false));
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}
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if (menu_controller_ && menu_controller_->IsVisible()) {
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window_regions.push_back(
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CefDraggableRegion(menu_controller_->GetBounds(), /*draggable=*/false));
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}
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if (location_controller_ && location_controller_->IsVisible()) {
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window_regions.push_back(CefDraggableRegion(
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location_controller_->GetBounds(), /*draggable=*/false));
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}
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}
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void ViewsOverlayControls::OnButtonPressed(CefRefPtr<CefButton> button) {
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auto command = static_cast<Command>(button->GetID());
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switch (command) {
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case ViewsOverlayControls::Command::kMinimize:
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window_->Minimize();
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break;
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case ViewsOverlayControls::Command::kMaximize:
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if (window_->IsMaximized()) {
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window_->Restore();
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} else {
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window_->Maximize();
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}
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break;
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case ViewsOverlayControls::Command::kClose:
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window_->Close();
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return;
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}
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// Explicitly reset button state because the button may have moved and it
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// won't receive the corresponding mouse move events.
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button->SetState(CEF_BUTTON_STATE_NORMAL);
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button->SetInkDropEnabled(false);
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button->SetInkDropEnabled(true);
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if (command == Command::kMaximize) {
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MaybeUpdateMaximizeButton();
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}
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}
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CefRefPtr<CefLabelButton> ViewsOverlayControls::CreateButton(Command command) {
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CefRefPtr<CefLabelButton> button = CefLabelButton::CreateLabelButton(
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this, GetLabel(command, window_maximized_));
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button->SetID(static_cast<int>(command));
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views_style::ApplyTo(button);
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button->SetInkDropEnabled(true);
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button->SetFocusable(false); // Don't give focus to the button.
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return button;
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}
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void ViewsOverlayControls::MaybeUpdateMaximizeButton() {
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if (window_->IsMaximized() == window_maximized_) {
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return;
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}
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window_maximized_ = !window_maximized_;
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auto max_button = panel_->GetChildViewAt(1);
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auto command = static_cast<Command>(max_button->GetID());
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DCHECK(command == Command::kMaximize);
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max_button->AsButton()->AsLabelButton()->SetText(
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GetLabel(command, window_maximized_));
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// Adjust overlay size and placement due to layout changing.
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panel_controller_->SizeToPreferredSize();
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}
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} // namespace client
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