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cef/libcef/browser/views/window_view.cc

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// Copyright 2016 The Chromium Embedded Framework 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 "cef/libcef/browser/views/window_view.h"
#include <memory>
#include "base/memory/raw_ptr.h"
#if BUILDFLAG(IS_LINUX)
#include "ui/base/ozone_buildflags.h"
#if BUILDFLAG(IS_OZONE_X11)
// Include first due to redefinition of x11::EventMask.
#include "ui/base/x/x11_util.h"
#endif
#endif
#include "base/ranges/algorithm.h"
#include "cef/libcef/browser/geometry_util.h"
#include "cef/libcef/browser/image_impl.h"
#include "cef/libcef/browser/views/widget.h"
#include "cef/libcef/browser/views/window_impl.h"
#include "ui/base/hit_test.h"
#include "ui/display/screen.h"
#include "ui/views/widget/widget.h"
#include "ui/views/window/native_frame_view.h"
#if BUILDFLAG(IS_LINUX)
#if BUILDFLAG(IS_OZONE_X11)
#include "ui/gfx/x/atom_cache.h"
#include "ui/linux/linux_ui_delegate.h"
#endif
#endif
#if BUILDFLAG(IS_OZONE)
#include "ui/ozone/public/ozone_platform.h"
#endif
#if BUILDFLAG(IS_WIN)
#include "ui/display/win/screen_win.h"
#include "ui/views/win/hwnd_util.h"
#endif
#if defined(USE_AURA)
#include "ui/aura/window.h"
#endif
namespace {
// Specialize ClientView to handle Widget-related events.
class ClientViewEx : public views::ClientView {
public:
ClientViewEx(views::Widget* widget,
views::View* contents_view,
base::WeakPtr<CefWindowView> view)
: views::ClientView(widget, contents_view), view_(std::move(view)) {}
ClientViewEx(const ClientViewEx&) = delete;
ClientViewEx& operator=(const ClientViewEx&) = delete;
views::CloseRequestResult OnWindowCloseRequested() override {
return view_->window_delegate()->CanWidgetClose()
? views::CloseRequestResult::kCanClose
: views::CloseRequestResult::kCannotClose;
}
private:
const base::WeakPtr<CefWindowView> view_;
};
// Extend NativeFrameView with draggable region handling.
class NativeFrameViewEx : public views::NativeFrameView {
public:
NativeFrameViewEx(views::Widget* widget, base::WeakPtr<CefWindowView> view)
: views::NativeFrameView(widget),
widget_(widget),
view_(std::move(view)) {}
NativeFrameViewEx(const NativeFrameViewEx&) = delete;
NativeFrameViewEx& operator=(const NativeFrameViewEx&) = delete;
gfx::Rect GetWindowBoundsForClientBounds(
const gfx::Rect& client_bounds) const override {
#if BUILDFLAG(IS_MAC)
// From NativeFrameView::GetWindowBoundsForClientBounds:
gfx::Rect window_bounds = client_bounds;
// Enforce minimum size (1, 1) in case that |client_bounds| is passed with
// empty size.
if (window_bounds.IsEmpty()) {
window_bounds.set_size(gfx::Size(1, 1));
}
if (!view_->IsFrameless()) {
if (auto titlebar_height = view_->GetTitlebarHeight(/*required=*/true)) {
window_bounds.Inset(gfx::Insets::TLBR(-(*titlebar_height), 0, 0, 0));
}
}
return window_bounds;
#elif BUILDFLAG(IS_WIN)
HWND window = views::HWNDForWidget(widget_);
CHECK(window);
const DWORD style = GetWindowLong(window, GWL_STYLE);
const DWORD ex_style = GetWindowLong(window, GWL_EXSTYLE);
const bool has_menu = !(style & WS_CHILD) && (GetMenu(window) != nullptr);
// Convert from DIP to pixel coordinates using a method that can handle
// multiple displays with different DPI.
const auto screen_rect =
display::win::ScreenWin::DIPToScreenRect(window, client_bounds);
RECT rect = {screen_rect.x(), screen_rect.y(),
screen_rect.x() + screen_rect.width(),
screen_rect.y() + screen_rect.height()};
AdjustWindowRectEx(&rect, style, has_menu, ex_style);
// Keep the original origin while potentially increasing the size to include
// the frame non-client area.
gfx::Rect pixel_rect(screen_rect.x(), screen_rect.y(),
rect.right - rect.left, rect.bottom - rect.top);
// Convert back to DIP.
return display::win::ScreenWin::ScreenToDIPRect(window, pixel_rect);
#else
// Use the default implementation.
return views::NativeFrameView::GetWindowBoundsForClientBounds(
client_bounds);
#endif
}
int NonClientHitTest(const gfx::Point& point) override {
if (widget_->IsFullscreen()) {
return HTCLIENT;
}
// Test for mouse clicks that fall within the draggable region.
SkRegion* draggable_region = view_->draggable_region();
if (draggable_region && draggable_region->contains(point.x(), point.y())) {
return HTCAPTION;
}
return views::NativeFrameView::NonClientHitTest(point);
}
void OnThemeChanged() override {
views::NativeFrameView::OnThemeChanged();
view_util::UpdateTitlebarTheme(widget_);
}
private:
// Not owned by this object.
raw_ptr<views::Widget> widget_;
const base::WeakPtr<CefWindowView> view_;
};
// The area inside the frame border that can be clicked and dragged for resizing
// the window. Only used in restored mode.
const int kResizeBorderThickness = 4;
// The distance from each window corner that triggers diagonal resizing. Only
// used in restored mode.
const int kResizeAreaCornerSize = 16;
// Implement NonClientFrameView without the system default caption and icon but
// with a resizable border. Based on AppWindowFrameView and CustomFrameView.
class CaptionlessFrameView : public views::NonClientFrameView {
public:
CaptionlessFrameView(views::Widget* widget, base::WeakPtr<CefWindowView> view)
: widget_(widget), view_(std::move(view)) {}
CaptionlessFrameView(const CaptionlessFrameView&) = delete;
CaptionlessFrameView& operator=(const CaptionlessFrameView&) = delete;
gfx::Rect GetBoundsForClientView() const override {
return client_view_bounds_;
}
gfx::Rect GetWindowBoundsForClientBounds(
const gfx::Rect& client_bounds) const override {
return client_bounds;
}
int NonClientHitTest(const gfx::Point& point) override {
if (widget_->IsFullscreen()) {
return HTCLIENT;
}
// Sanity check.
if (!bounds().Contains(point)) {
return HTNOWHERE;
}
// Check the frame first, as we allow a small area overlapping the contents
// to be used for resize handles.
bool can_ever_resize = widget_->widget_delegate()
? widget_->widget_delegate()->CanResize()
: false;
// Don't allow overlapping resize handles when the window is maximized or
// fullscreen, as it can't be resized in those states.
int resize_border_thickness = ResizeBorderThickness();
int frame_component = GetHTComponentForFrame(
point,
gfx::Insets::VH(resize_border_thickness, resize_border_thickness),
kResizeAreaCornerSize, kResizeAreaCornerSize, can_ever_resize);
if (frame_component != HTNOWHERE) {
return frame_component;
}
// Test for mouse clicks that fall within the draggable region.
SkRegion* draggable_region = view_->draggable_region();
if (draggable_region && draggable_region->contains(point.x(), point.y())) {
return HTCAPTION;
}
int client_component = widget_->client_view()->NonClientHitTest(point);
if (client_component != HTNOWHERE) {
return client_component;
}
// Caption is a safe default.
return HTCAPTION;
}
void GetWindowMask(const gfx::Size& size, SkPath* window_mask) override {
// Nothing to do here.
}
void ResetWindowControls() override {
// Nothing to do here.
}
void UpdateWindowIcon() override {
// Nothing to do here.
}
void UpdateWindowTitle() override {
// Nothing to do here.
}
void SizeConstraintsChanged() override {
// Nothing to do here.
}
void OnPaint(gfx::Canvas* canvas) override {
// Nothing to do here.
}
void Layout(views::View::PassKey) override {
client_view_bounds_.SetRect(0, 0, width(), height());
LayoutSuperclass<views::NonClientFrameView>(this);
}
gfx::Size CalculatePreferredSize(
const views::SizeBounds& available_size) const override {
return widget_->non_client_view()
->GetWindowBoundsForClientBounds(
gfx::Rect(widget_->client_view()->GetPreferredSize()))
.size();
}
gfx::Size GetMinimumSize() const override {
return widget_->non_client_view()
->GetWindowBoundsForClientBounds(
gfx::Rect(widget_->client_view()->GetMinimumSize()))
.size();
}
gfx::Size GetMaximumSize() const override {
gfx::Size max_size = widget_->client_view()->GetMaximumSize();
gfx::Size converted_size =
widget_->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());
}
private:
int ResizeBorderThickness() const {
return (widget_->IsMaximized() || widget_->IsFullscreen()
? 0
: kResizeBorderThickness);
}
// Not owned by this object.
raw_ptr<views::Widget> widget_;
const base::WeakPtr<CefWindowView> view_;
// The bounds of the client view, in this view's coordinates.
gfx::Rect client_view_bounds_;
};
bool IsWindowBorderHit(int code) {
// On Windows HTLEFT = 10 and HTBORDER = 18. Values are not ordered the same
// in base/hit_test.h for non-Windows platforms.
#if BUILDFLAG(IS_WIN)
return code >= HTLEFT && code <= HTBORDER;
#else
return code == HTLEFT || code == HTRIGHT || code == HTTOP ||
code == HTTOPLEFT || code == HTTOPRIGHT || code == HTBOTTOM ||
code == HTBOTTOMLEFT || code == HTBOTTOMRIGHT || code == HTBORDER;
#endif
}
// Based on UpdateModalDialogPosition() from
// components/constrained_window/constrained_window_views.cc
void UpdateModalDialogPosition(views::Widget* widget,
views::Widget* host_widget) {
// Do not forcibly update the dialog widget position if it is being dragged.
if (widget->HasCapture()) {
return;
}
const gfx::Size& size = widget->GetRootView()->GetPreferredSize();
const gfx::Size& host_size =
host_widget->GetClientAreaBoundsInScreen().size();
// Center the dialog. Position is relative to the host.
gfx::Point position;
position.set_x((host_size.width() - size.width()) / 2);
position.set_y((host_size.height() - size.height()) / 2);
// Align the first row of pixels inside the border. This is the apparent top
// of the dialog.
position.set_y(position.y() -
widget->non_client_view()->frame_view()->GetInsets().top());
const bool supports_global_screen_coordinates =
#if !BUILDFLAG(IS_OZONE)
true;
#else
ui::OzonePlatform::GetInstance()
->GetPlatformProperties()
.supports_global_screen_coordinates;
#endif
if (widget->is_top_level() && supports_global_screen_coordinates) {
position += host_widget->GetClientAreaBoundsInScreen().OffsetFromOrigin();
// If the dialog extends partially off any display, clamp its position to
// be fully visible within that display. If the dialog doesn't intersect
// with any display clamp its position to be fully on the nearest display.
gfx::Rect display_rect = gfx::Rect(position, size);
const display::Display display =
display::Screen::GetScreen()->GetDisplayNearestView(
view_util::GetNativeView(host_widget));
const gfx::Rect work_area = display.work_area();
if (!work_area.Contains(display_rect)) {
display_rect.AdjustToFit(work_area);
}
position = display_rect.origin();
}
widget->SetBounds(gfx::Rect(position, size));
}
bool ComputeAlloyStyle(CefWindowDelegate* cef_delegate) {
const auto default_style = CEF_RUNTIME_STYLE_CHROME;
auto result_style = default_style;
if (cef_delegate) {
auto requested_style = cef_delegate->GetWindowRuntimeStyle();
if (requested_style != CEF_RUNTIME_STYLE_DEFAULT) {
result_style = requested_style;
}
}
return result_style == CEF_RUNTIME_STYLE_ALLOY;
}
} // namespace
CefWindowView::CefWindowView(CefWindowDelegate* cef_delegate,
Delegate* window_delegate)
: ParentClass(cef_delegate),
window_delegate_(window_delegate),
is_alloy_style_(ComputeAlloyStyle(cef_delegate)) {
DCHECK(window_delegate_);
}
void CefWindowView::CreateWidget(gfx::AcceleratedWidget parent_widget) {
DCHECK(!GetWidget());
// |widget| is owned by the NativeWidget and will be destroyed in response to
// a native destruction message.
CefWidget* cef_widget = CefWidget::Create(this);
views::Widget* widget = cef_widget->GetWidget();
views::Widget::InitParams params(
views::Widget::InitParams::NATIVE_WIDGET_OWNS_WIDGET);
params.delegate = this;
views::Widget* host_widget = nullptr;
bool can_activate = true;
bool can_resize = true;
const bool has_native_parent = parent_widget != gfx::kNullAcceleratedWidget;
if (has_native_parent) {
params.parent_widget = parent_widget;
// Remove the window frame.
is_frameless_ = true;
// See CalculateWindowStylesFromInitParams in
// ui/views/widget/widget_hwnd_utils.cc for the conversion of |params| to
// Windows style flags.
// - Set the WS_CHILD flag.
params.child = true;
// - Set the WS_VISIBLE flag.
params.type = views::Widget::InitParams::TYPE_CONTROL;
// - Don't set the WS_EX_COMPOSITED flag.
params.opacity = views::Widget::InitParams::WindowOpacity::kOpaque;
} else {
params.type = views::Widget::InitParams::TYPE_WINDOW;
}
// Cause WidgetDelegate::DeleteDelegate() to delete |this| after executing the
// registered DeleteDelegate callback.
SetOwnedByWidget(true);
RegisterDeleteDelegateCallback(
base::BindOnce(&CefWindowView::DeleteDelegate, base::Unretained(this)));
if (cef_delegate()) {
CefRefPtr<CefWindow> cef_window = GetCefWindow();
auto bounds = cef_delegate()->GetInitialBounds(cef_window);
params.bounds = gfx::Rect(bounds.x, bounds.y, bounds.width, bounds.height);
if (has_native_parent) {
DCHECK(!params.bounds.IsEmpty());
} else {
is_frameless_ = cef_delegate()->IsFrameless(cef_window);
params.native_widget =
view_util::CreateNativeWidget(widget, cef_window, cef_delegate());
can_resize = cef_delegate()->CanResize(cef_window);
const auto show_state = cef_delegate()->GetInitialShowState(cef_window);
switch (show_state) {
case CEF_SHOW_STATE_NORMAL:
params.show_state = ui::SHOW_STATE_NORMAL;
break;
case CEF_SHOW_STATE_MINIMIZED:
params.show_state = ui::SHOW_STATE_MINIMIZED;
break;
case CEF_SHOW_STATE_MAXIMIZED:
params.show_state = ui::SHOW_STATE_MAXIMIZED;
break;
case CEF_SHOW_STATE_FULLSCREEN:
params.show_state = ui::SHOW_STATE_FULLSCREEN;
break;
case CEF_SHOW_STATE_HIDDEN:
#if BUILDFLAG(IS_MAC)
params.show_state = ui::SHOW_STATE_HIDDEN;
#else
params.show_state = ui::SHOW_STATE_MINIMIZED;
#endif
break;
}
bool is_menu = false;
bool can_activate_menu = true;
CefRefPtr<CefWindow> parent_window = cef_delegate()->GetParentWindow(
cef_window, &is_menu, &can_activate_menu);
if (parent_window && !parent_window->IsSame(cef_window)) {
CefWindowImpl* parent_window_impl =
static_cast<CefWindowImpl*>(parent_window.get());
params.parent = view_util::GetNativeView(parent_window_impl->widget());
// Aura uses the same types for NativeView and NativeWindow, which can
// be confusing. Verify that we set |params.parent| correctly (to the
// expected internal::NativeWidgetPrivate) for Widget::Init usage.
DCHECK(views::Widget::GetWidgetForNativeView(params.parent));
if (is_menu) {
// Don't clip the window to parent bounds.
params.type = views::Widget::InitParams::TYPE_MENU;
// Don't set "always on top" for the window.
params.z_order = ui::ZOrderLevel::kNormal;
can_activate = can_activate_menu;
} else {
// Create a top-level window that is moveable and can exceed the
// bounds of the parent window. By not setting |params.child| here we
// cause OnBeforeWidgetInit to create a views::DesktopNativeWidgetAura
// instead of a views::NativeWidgetAura. We need to use this desktop
// variant with browser windows to get proper focus and shutdown
// behavior.
#if !BUILDFLAG(IS_LINUX)
// SetModalType doesn't work on Linux (no implementation in
// DesktopWindowTreeHostLinux::InitModalType). See the X11-specific
// implementation below that may work with some window managers.
if (cef_delegate()->IsWindowModalDialog(cef_window)) {
SetModalType(ui::MODAL_TYPE_WINDOW);
}
#endif
host_widget = parent_window_impl->widget();
}
}
}
}
if (params.bounds.IsEmpty()) {
// The window will be placed on the default screen with origin (0,0).
params.bounds = gfx::Rect(CalculatePreferredSize({}));
if (params.bounds.IsEmpty()) {
// Choose a reasonable default size.
params.bounds.set_size({800, 600});
}
}
if (can_activate) {
// Cause WidgetDelegate::CanActivate to return true.
params.activatable = views::Widget::InitParams::Activatable::kYes;
}
SetCanResize(can_resize);
#if BUILDFLAG(IS_WIN)
if (is_frameless_) {
// Don't show the native window caption. Setting this value on Linux will
// result in window resize artifacts.
params.remove_standard_frame = true;
}
#endif
widget->Init(std::move(params));
widget->AddObserver(this);
// |widget| should now be associated with |this|.
DCHECK_EQ(widget, GetWidget());
// |widget| must be top-level for focus handling to work correctly.
DCHECK(widget->is_top_level());
if (can_activate) {
// |widget| must be activatable for focus handling to work correctly.
DCHECK(widget->widget_delegate()->CanActivate());
}
cef_widget->Initialized();
#if BUILDFLAG(IS_LINUX)
#if BUILDFLAG(IS_OZONE_X11)
auto x11window = static_cast<x11::Window>(view_util::GetWindowHandle(widget));
CHECK(x11window != x11::Window::None);
if (is_frameless_) {
ui::SetUseOSWindowFrame(x11window, false);
}
if (host_widget) {
auto parent = static_cast<gfx::AcceleratedWidget>(
view_util::GetWindowHandle(host_widget));
CHECK(parent);
auto connection = x11::Connection::Get();
if (cef_delegate() && cef_delegate()->IsWindowModalDialog(GetCefWindow())) {
// The presence of _NET_WM_STATE_MODAL in _NET_SUPPORTED indicates
// possible window manager support. However, some window managers still
// don't support this properly.
x11::Atom modal_atom = x11::GetAtom("_NET_WM_STATE_MODAL");
if (connection->WmSupportsHint(modal_atom)) {
ui::SetWMSpecState(x11window, true, modal_atom, x11::Atom::None);
} else {
LOG(ERROR)
<< "Window modal dialogs are not supported by the window manager";
}
}
// From GtkUiPlatformX11::SetGtkWidgetTransientFor:
connection->SetProperty(x11window, x11::Atom::WM_TRANSIENT_FOR,
x11::Atom::WINDOW, parent);
connection->SetProperty(x11window, x11::GetAtom("_NET_WM_WINDOW_TYPE"),
x11::Atom::ATOM,
x11::GetAtom("_NET_WM_WINDOW_TYPE_DIALOG"));
ui::LinuxUiDelegate::GetInstance()->SetTransientWindowForParent(
parent, static_cast<gfx::AcceleratedWidget>(x11window));
}
#endif
#endif
if (host_widget) {
// Position |widget| relative to |host_widget|.
UpdateModalDialogPosition(widget, host_widget);
// Track the lifespan of |host_widget|, which may be destroyed before
// |widget|.
host_widget_destruction_observer_ =
std::make_unique<WidgetDestructionObserver>(host_widget);
}
}
CefRefPtr<CefWindow> CefWindowView::GetCefWindow() const {
CefRefPtr<CefWindow> window = GetCefPanel()->AsWindow();
DCHECK(window);
return window;
}
void CefWindowView::DeleteDelegate() {
// Any overlays should already be removed.
DCHECK(overlay_hosts_.empty());
// Remove all child Views before deleting the Window so that notifications
// resolve correctly.
RemoveAllChildViews();
window_delegate_->OnWindowViewDeleted();
}
bool CefWindowView::CanMinimize() const {
if (!cef_delegate()) {
return true;
}
return cef_delegate()->CanMinimize(GetCefWindow());
}
bool CefWindowView::CanMaximize() const {
if (!cef_delegate()) {
return true;
}
return cef_delegate()->CanMaximize(GetCefWindow());
}
std::u16string CefWindowView::GetWindowTitle() const {
return title_;
}
ui::ImageModel CefWindowView::GetWindowIcon() {
if (!window_icon_) {
return ParentClass::GetWindowIcon();
}
auto image_skia =
static_cast<CefImageImpl*>(window_icon_.get())
->GetForced1xScaleRepresentation(GetDisplay().device_scale_factor());
return ui::ImageModel::FromImageSkia(image_skia);
}
ui::ImageModel CefWindowView::GetWindowAppIcon() {
if (!window_app_icon_) {
return ParentClass::GetWindowAppIcon();
}
auto image_skia =
static_cast<CefImageImpl*>(window_app_icon_.get())
->GetForced1xScaleRepresentation(GetDisplay().device_scale_factor());
return ui::ImageModel::FromImageSkia(image_skia);
}
void CefWindowView::WindowClosing() {
// Close any overlays now, before the Widget is destroyed.
// Use a copy of the array because the original may be modified while
// iterating.
std::vector<raw_ptr<CefOverlayViewHost>> overlay_hosts = overlay_hosts_;
for (auto& overlay_host : overlay_hosts) {
overlay_host->Close();
}
#if BUILDFLAG(IS_LINUX)
#if BUILDFLAG(IS_OZONE_X11)
if (host_widget()) {
auto parent = static_cast<gfx::AcceleratedWidget>(
view_util::GetWindowHandle(host_widget()));
CHECK(parent);
// From GtkUiPlatformX11::ClearTransientFor:
ui::LinuxUiDelegate::GetInstance()->SetTransientWindowForParent(
parent, static_cast<gfx::AcceleratedWidget>(x11::Window::None));
}
#endif
#endif
window_delegate_->OnWindowClosing();
views::WidgetDelegateView::WindowClosing();
}
views::View* CefWindowView::GetContentsView() {
// |this| will be the "Contents View" hosted by the Widget via ClientView and
// RootView.
return this;
}
views::ClientView* CefWindowView::CreateClientView(views::Widget* widget) {
return new ClientViewEx(widget, GetContentsView(),
weak_ptr_factory_.GetWeakPtr());
}
std::unique_ptr<views::NonClientFrameView>
CefWindowView::CreateNonClientFrameView(views::Widget* widget) {
if (is_frameless_) {
// Custom frame type that doesn't render a caption.
return std::make_unique<CaptionlessFrameView>(
widget, weak_ptr_factory_.GetWeakPtr());
} else if (widget->ShouldUseNativeFrame()) {
// DesktopNativeWidgetAura::CreateNonClientFrameView() returns
// NativeFrameView by default. Extend that type.
return std::make_unique<NativeFrameViewEx>(widget,
weak_ptr_factory_.GetWeakPtr());
}
// Use Chromium provided CustomFrameView. In case if we would like to
// customize the frame, provide own implementation.
return nullptr;
}
bool CefWindowView::ShouldDescendIntoChildForEventHandling(
gfx::NativeView child,
const gfx::Point& location) {
if (is_frameless_) {
// If the window is resizable it should claim mouse events that fall on the
// window border.
views::NonClientFrameView* ncfv = GetNonClientFrameView();
if (ncfv) {
int result = ncfv->NonClientHitTest(location);
if (IsWindowBorderHit(result)) {
return false;
}
}
}
// The window should claim mouse events that fall within the draggable region.
return !draggable_region_.get() ||
!draggable_region_->contains(location.x(), location.y());
}
bool CefWindowView::MaybeGetMinimumSize(gfx::Size* size) const {
#if BUILDFLAG(IS_LINUX)
// Resize is disabled on Linux by returning the preferred size as the min/max
// size.
if (!CanResize()) {
*size = CalculatePreferredSize({});
return true;
}
#endif
return false;
}
bool CefWindowView::MaybeGetMaximumSize(gfx::Size* size) const {
#if BUILDFLAG(IS_LINUX)
// Resize is disabled on Linux by returning the preferred size as the min/max
// size.
if (!CanResize()) {
*size = CalculatePreferredSize({});
return true;
}
#endif
return false;
}
void CefWindowView::ViewHierarchyChanged(
const views::ViewHierarchyChangedDetails& details) {
if (details.child == this) {
// This View's parent types (RootView, ClientView) are not exposed via the
// CEF API. Therefore don't send notifications about this View's parent
// changes.
return;
}
ParentClass::ViewHierarchyChanged(details);
}
void CefWindowView::OnThemeChanged() {
bool initialized = false;
if (auto* cef_widget = CefWidget::GetForWidget(GetWidget())) {
initialized = cef_widget->IsInitialized();
}
if (!initialized) {
// Skip the CefViewView logic.
views::WidgetDelegateView::OnThemeChanged();
} else {
ParentClass::OnThemeChanged();
}
}
void CefWindowView::OnWidgetActivationChanged(views::Widget* widget,
bool active) {
if (cef_delegate()) {
cef_delegate()->OnWindowActivationChanged(GetCefWindow(), active);
}
}
void CefWindowView::OnWidgetBoundsChanged(views::Widget* widget,
const gfx::Rect& new_bounds) {
// Size is set to zero when the host Widget is hidden. We don't need to move
// overlays in that case.
if (!new_bounds.IsEmpty()) {
MoveOverlaysIfNecessary();
}
if (cef_delegate()) {
cef_delegate()->OnWindowBoundsChanged(
GetCefWindow(), {new_bounds.x(), new_bounds.y(), new_bounds.width(),
new_bounds.height()});
}
}
display::Display CefWindowView::GetDisplay() const {
const views::Widget* widget = GetWidget();
if (widget) {
return view_util::GetDisplayMatchingBounds(
widget->GetWindowBoundsInScreen(), false);
}
return display::Display();
}
void CefWindowView::SetTitle(const std::u16string& title) {
title_ = title;
views::Widget* widget = GetWidget();
if (widget) {
widget->UpdateWindowTitle();
}
}
void CefWindowView::SetWindowIcon(CefRefPtr<CefImage> window_icon) {
if (std::max(window_icon->GetWidth(), window_icon->GetHeight()) != 16U) {
DLOG(ERROR) << "Window icons must be 16 DIP in size.";
return;
}
window_icon_ = window_icon;
views::Widget* widget = GetWidget();
if (widget) {
widget->UpdateWindowIcon();
}
}
void CefWindowView::SetWindowAppIcon(CefRefPtr<CefImage> window_app_icon) {
window_app_icon_ = window_app_icon;
views::Widget* widget = GetWidget();
if (widget) {
widget->UpdateWindowIcon();
}
}
CefRefPtr<CefOverlayController> CefWindowView::AddOverlayView(
CefRefPtr<CefView> view,
cef_docking_mode_t docking_mode,
bool can_activate) {
DCHECK(view.get());
DCHECK(view->IsValid());
if (!view.get() || !view->IsValid()) {
return nullptr;
}
views::Widget* widget = GetWidget();
if (widget) {
// Owned by the View hierarchy. Acts as a z-order reference for the overlay.
auto overlay_host_view = AddChildView(std::make_unique<views::View>());
// Owned by the resulting Widget, after calling Init().
auto* overlay_host = new CefOverlayViewHost(this, docking_mode);
overlay_hosts_.push_back(overlay_host);
overlay_host->Init(overlay_host_view, view, can_activate);
return overlay_host->controller();
}
return nullptr;
}
void CefWindowView::RemoveOverlayView(CefOverlayViewHost* host,
views::View* host_view) {
DCHECK_EQ(host_view->parent(), this);
RemoveChildView(host_view);
const auto it = base::ranges::find_if(
overlay_hosts_,
[host](CefOverlayViewHost* current) { return current == host; });
DCHECK(it != overlay_hosts_.end());
overlay_hosts_.erase(it);
}
void CefWindowView::MoveOverlaysIfNecessary() {
if (overlay_hosts_.empty()) {
return;
}
for (auto& overlay_host : overlay_hosts_) {
overlay_host->MoveIfNecessary();
}
}
void CefWindowView::InvalidateExclusionRegions() {
if (last_dialog_top_inset_ != -1) {
last_dialog_top_y_ = last_dialog_top_inset_ = -1;
}
}
void CefWindowView::SetDraggableRegions(
const std::vector<CefDraggableRegion>& regions) {
if (regions.empty() && !draggable_region_) {
// Still empty.
return;
}
InvalidateExclusionRegions();
if (regions.empty()) {
draggable_region_.reset();
draggable_rects_.clear();
return;
}
draggable_region_ = std::make_unique<SkRegion>();
for (const CefDraggableRegion& region : regions) {
draggable_region_->op(
{region.bounds.x, region.bounds.y,
region.bounds.x + region.bounds.width,
region.bounds.y + region.bounds.height},
region.draggable ? SkRegion::kUnion_Op : SkRegion::kDifference_Op);
if (region.draggable) {
draggable_rects_.emplace_back(region.bounds.x, region.bounds.y,
region.bounds.width, region.bounds.height);
}
}
}
void CefWindowView::OnOverlayBoundsChanged() {
InvalidateExclusionRegions();
}
views::NonClientFrameView* CefWindowView::GetNonClientFrameView() const {
const views::Widget* widget = GetWidget();
if (!widget) {
return nullptr;
}
if (!widget->non_client_view()) {
return nullptr;
}
return widget->non_client_view()->frame_view();
}
void CefWindowView::UpdateBoundingBox(gfx::Rect* bounds,
bool add_titlebar_height) const {
// Max distance from the edges of |bounds| to qualify for subtraction.
const int kMaxDistance = 10;
for (auto& overlay_host : overlay_hosts_) {
*bounds = SubtractOverlayFromBoundingBox(*bounds, overlay_host->bounds(),
kMaxDistance);
}
for (auto& rect : draggable_rects_) {
*bounds = SubtractOverlayFromBoundingBox(*bounds, rect, kMaxDistance);
}
if (auto titlebar_height = GetTitlebarHeight(add_titlebar_height)) {
gfx::Insets inset;
if (add_titlebar_height) {
inset.set_top(*titlebar_height);
} else if (bounds->y() < *titlebar_height) {
inset.set_top(*titlebar_height - bounds->y());
}
if (!inset.IsEmpty()) {
bounds->Inset(inset);
}
}
}
void CefWindowView::UpdateFindBarBoundingBox(gfx::Rect* bounds) const {
#if BUILDFLAG(IS_MAC)
// For framed windows on macOS we must add the titlebar height.
const bool add_titlebar_height = !is_frameless_;
#else
const bool add_titlebar_height = false;
#endif
UpdateBoundingBox(bounds, add_titlebar_height);
}
void CefWindowView::UpdateDialogTopInset(int* dialog_top_y) const {
if (*dialog_top_y == last_dialog_top_y_ && last_dialog_top_inset_ != -1) {
// Return the cached value.
*dialog_top_y = last_dialog_top_inset_;
return;
}
const views::Widget* widget = GetWidget();
if (!widget) {
return;
}
gfx::Rect bounds(widget->GetSize());
if (*dialog_top_y > 0) {
// Start with the value computed in
// BrowserViewLayout::LayoutBookmarkAndInfoBars.
gfx::Insets inset;
inset.set_top(*dialog_top_y);
bounds.Inset(inset);
}
UpdateBoundingBox(&bounds, /*add_titlebar_height=*/false);
last_dialog_top_y_ = *dialog_top_y;
last_dialog_top_inset_ = bounds.y();
*dialog_top_y = bounds.y();
}
views::Widget* CefWindowView::host_widget() const {
if (host_widget_destruction_observer_) {
return host_widget_destruction_observer_->widget();
}
return nullptr;
}
std::optional<float> CefWindowView::GetTitlebarHeight(bool required) const {
if (cef_delegate()) {
float title_bar_height = 0;
const bool has_title_bar_height =
cef_delegate()->GetTitlebarHeight(GetCefWindow(), &title_bar_height);
if (has_title_bar_height) {
return title_bar_height;
}
}
#if BUILDFLAG(IS_MAC)
if (required) {
// For framed windows on macOS we must include the titlebar height in the
// UpdateFindBarBoundingBox() calculation.
return view_util::GetNSWindowTitleBarHeight(
const_cast<views::Widget*>(GetWidget()));
}
#endif
return std::nullopt;
}
void CefWindowView::OnThemeColorsChanged(bool chrome_theme) {
if (cef_delegate()) {
cef_delegate()->OnThemeColorsChanged(GetCefWindow(), chrome_theme);
}
}
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