139 lines
4.5 KiB
C++
139 lines
4.5 KiB
C++
// Copyright 2016 The Chromium Embedded Framework Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be found
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// in the LICENSE file.
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#include "cef/libcef/browser/views/view_util.h"
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#include "ui/aura/window.h"
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#include "ui/aura/window_tree_host.h"
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#include "ui/views/view_constants_aura.h"
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#include "ui/views/widget/native_widget.h"
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#include "ui/views/widget/native_widget_delegate.h"
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#include "ui/views/widget/widget.h"
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#if BUILDFLAG(IS_WIN)
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#include <dwmapi.h>
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#include "base/win/windows_version.h"
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#include "ui/views/win/hwnd_util.h"
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#endif
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namespace view_util {
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gfx::NativeWindow GetNativeWindow(views::Widget* widget) {
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if (widget) {
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return widget->GetNativeWindow();
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}
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return nullptr;
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}
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gfx::NativeView GetNativeView(views::Widget* widget) {
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if (widget) {
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return widget->GetNativeView();
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}
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return nullptr;
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}
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CefWindowHandle GetWindowHandle(views::Widget* widget) {
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// Same implementation as views::HWNDForView() but cross-platform.
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if (widget) {
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return GetWindowHandle(widget->GetNativeWindow());
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}
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return kNullWindowHandle;
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}
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CefWindowHandle GetWindowHandle(gfx::NativeWindow window) {
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// |window| is an aura::Window*.
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if (window && window->GetRootWindow()) {
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return window->GetHost()->GetAcceleratedWidget();
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}
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return kNullWindowHandle;
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}
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views::NativeWidget* CreateNativeWidget(
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views::internal::NativeWidgetDelegate* delegate,
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CefRefPtr<CefWindow> window,
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CefWindowDelegate* window_delegate) {
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return nullptr;
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}
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void SetHostView(views::Widget* widget, views::View* host_view) {
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widget->GetNativeView()->SetProperty(views::kHostViewKey, host_view);
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}
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views::View* GetHostView(const views::Widget* widget) {
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return widget->GetNativeView()->GetProperty(views::kHostViewKey);
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}
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void UpdateTitlebarTheme(views::Widget* widget) {
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#if BUILDFLAG(IS_WIN)
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// Value was 19 prior to Windows 10 20H1, according to
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// https://stackoverflow.com/a/70693198
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const DWORD dwAttribute =
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base::win::GetVersion() >= base::win::Version::WIN10_20H1
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? DWMWA_USE_IMMERSIVE_DARK_MODE
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: 19;
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const HWND widget_hwnd = views::HWNDForWidget(widget);
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BOOL has_dark_titlebar = FALSE;
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DwmGetWindowAttribute(widget_hwnd, dwAttribute, &has_dark_titlebar,
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sizeof(has_dark_titlebar));
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const BOOL dark_titlebar_enabled = ShouldUseDarkTheme(widget);
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if (has_dark_titlebar == dark_titlebar_enabled) {
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// No change required.
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return;
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}
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// From BrowserFrameViewWin::SetSystemMicaTitlebarAttributes.
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DwmSetWindowAttribute(widget_hwnd, dwAttribute, &dark_titlebar_enabled,
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sizeof(dark_titlebar_enabled));
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// Repaint the titlebar if the Widget is visible. None of the usual NC
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// repaint techniques work with DwmSetWindowAttribute so use a workaround
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// that nudges the window width.
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// See https://stackoverflow.com/a/78269906/23991994
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if (IsWindowVisible(widget_hwnd) && !IsIconic(widget_hwnd)) {
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RECT rect = {};
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::GetWindowRect(widget_hwnd, &rect);
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if (IsZoomed(widget_hwnd)) {
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// Window is currently maximized. Restore and then re-maximize the
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// window. The restore position is changed temporarily to make the
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// update less noticeable.
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WINDOWPLACEMENT placement = {};
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GetWindowPlacement(widget_hwnd, &placement);
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const RECT oldrect = placement.rcNormalPosition;
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placement.rcNormalPosition = rect;
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placement.rcNormalPosition.right -= 1;
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SetWindowPlacement(widget_hwnd, &placement);
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LockWindowUpdate(widget_hwnd);
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ShowWindow(widget_hwnd, SW_SHOWNORMAL);
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ShowWindow(widget_hwnd, SW_SHOWMAXIMIZED);
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LockWindowUpdate(nullptr);
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placement.rcNormalPosition = oldrect;
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SetWindowPlacement(widget_hwnd, &placement);
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} else {
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// Window is currently normal. Change and then restore the window width.
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// Use Defer functions to make the update less noticeable.
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HDWP defer = BeginDeferWindowPos(2);
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DeferWindowPos(defer, widget_hwnd, NULL, 0, 0, rect.right - rect.left - 1,
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rect.bottom - rect.top,
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SWP_NOZORDER | SWP_NOMOVE | SWP_NOACTIVATE);
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DeferWindowPos(defer, widget_hwnd, NULL, 0, 0, rect.right - rect.left,
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rect.bottom - rect.top,
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SWP_NOZORDER | SWP_NOMOVE | SWP_NOACTIVATE);
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LockWindowUpdate(widget_hwnd);
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EndDeferWindowPos(defer);
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LockWindowUpdate(nullptr);
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}
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}
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#endif // BUILDFLAG(IS_WIN)
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}
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} // namespace view_util
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