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// Copyright 2015 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 "libcef/browser/native/browser_platform_delegate_native_linux.h"
#include <sys/sysinfo.h>
#include "libcef/browser/browser_host_impl.h"
#include "libcef/browser/context.h"
#include "libcef/browser/native/menu_runner_linux.h"
#include "libcef/browser/native/window_delegate_view.h"
#include "libcef/browser/native/window_x11.h"
#include "libcef/browser/thread_util.h"
#include "base/no_destructor.h"
#include "content/browser/renderer_host/render_widget_host_impl.h"
#include "content/public/browser/native_web_keyboard_event.h"
#include "content/public/browser/render_view_host.h"
#include "content/public/common/renderer_preferences.h"
#include "ui/events/keycodes/dom/dom_key.h"
#include "ui/events/keycodes/dom/keycode_converter.h"
#include "ui/events/keycodes/keyboard_code_conversion_x.h"
#include "ui/events/keycodes/keyboard_code_conversion_xkb.h"
#include "ui/events/keycodes/keysym_to_unicode.h"
#include "ui/gfx/font_render_params.h"
#include "ui/views/widget/desktop_aura/desktop_window_tree_host_x11.h"
#include "ui/views/widget/widget.h"
namespace {
// Returns the number of seconds since system boot.
long GetSystemUptime() {
struct sysinfo info;
if (sysinfo(&info) == 0)
return info.uptime;
return 0;
}
} // namespace
CefBrowserPlatformDelegateNativeLinux::CefBrowserPlatformDelegateNativeLinux(
const CefWindowInfo& window_info,
SkColor background_color)
: CefBrowserPlatformDelegateNative(window_info,
background_color,
false,
false),
host_window_created_(false),
window_widget_(nullptr),
window_x11_(nullptr) {}
void CefBrowserPlatformDelegateNativeLinux::BrowserDestroyed(
CefBrowserHostImpl* browser) {
CefBrowserPlatformDelegate::BrowserDestroyed(browser);
if (host_window_created_) {
// Release the reference added in CreateHostWindow().
browser->Release();
}
}
bool CefBrowserPlatformDelegateNativeLinux::CreateHostWindow() {
DCHECK(!window_x11_);
DCHECK(!window_widget_);
if (window_info_.width == 0)
window_info_.width = 800;
if (window_info_.height == 0)
window_info_.height = 600;
gfx::Rect rect(window_info_.x, window_info_.y, window_info_.width,
window_info_.height);
// Create a new window object. It will delete itself when the associated X11
// window is destroyed.
window_x11_ = new CefWindowX11(browser_, window_info_.parent_window, rect);
window_info_.window = window_x11_->xwindow();
host_window_created_ = true;
// Add a reference that will be released in BrowserDestroyed().
browser_->AddRef();
CefWindowDelegateView* delegate_view = new CefWindowDelegateView(
GetBackgroundColor(), window_x11_->TopLevelAlwaysOnTop());
delegate_view->Init(window_info_.window, browser_->web_contents(),
gfx::Rect(gfx::Point(), rect.size()));
window_widget_ = delegate_view->GetWidget();
window_widget_->Show();
window_x11_->Show();
// As an additional requirement on Linux, we must set the colors for the
// render widgets in webkit.
content::RendererPreferences* prefs =
browser_->web_contents()->GetMutableRendererPrefs();
prefs->focus_ring_color = SkColorSetARGB(255, 229, 151, 0);
prefs->active_selection_bg_color = SkColorSetRGB(30, 144, 255);
prefs->active_selection_fg_color = SK_ColorWHITE;
prefs->inactive_selection_bg_color = SkColorSetRGB(200, 200, 200);
prefs->inactive_selection_fg_color = SkColorSetRGB(50, 50, 50);
// Set font-related attributes.
static const base::NoDestructor<gfx::FontRenderParams> params(
gfx::GetFontRenderParams(gfx::FontRenderParamsQuery(), nullptr));
prefs->should_antialias_text = params->antialiasing;
prefs->use_subpixel_positioning = params->subpixel_positioning;
prefs->hinting = params->hinting;
prefs->use_autohinter = params->autohinter;
prefs->use_bitmaps = params->use_bitmaps;
prefs->subpixel_rendering = params->subpixel_rendering;
browser_->web_contents()->GetRenderViewHost()->SyncRendererPrefs();
return true;
}
void CefBrowserPlatformDelegateNativeLinux::CloseHostWindow() {
if (window_x11_)
window_x11_->Close();
}
CefWindowHandle CefBrowserPlatformDelegateNativeLinux::GetHostWindowHandle()
const {
if (windowless_handler_)
return windowless_handler_->GetParentWindowHandle();
return window_info_.window;
}
views::Widget* CefBrowserPlatformDelegateNativeLinux::GetWindowWidget() const {
return window_widget_;
}
void CefBrowserPlatformDelegateNativeLinux::SendFocusEvent(bool setFocus) {
if (!setFocus)
return;
if (browser_->web_contents()) {
// Give logical focus to the RenderWidgetHostViewAura in the views
// hierarchy. This does not change the native keyboard focus.
browser_->web_contents()->Focus();
}
if (window_x11_) {
// Give native focus to the DesktopNativeWidgetAura for the root window.
// Needs to be done via the ::Window so that keyboard focus is assigned
// correctly.
window_x11_->Focus();
}
}
void CefBrowserPlatformDelegateNativeLinux::NotifyMoveOrResizeStarted() {
// Call the parent method to dismiss any existing popups.
CefBrowserPlatformDelegate::NotifyMoveOrResizeStarted();
if (!window_x11_)
return;
views::DesktopWindowTreeHostX11* tree_host = window_x11_->GetHost();
if (!tree_host)
return;
// Explicitly set the screen bounds so that WindowTreeHost::*Screen()
// methods return the correct results.
const gfx::Rect& bounds = window_x11_->GetBoundsInScreen();
tree_host->set_screen_bounds(bounds);
// Send updated screen rectangle information to the renderer process so that
// popups are displayed in the correct location.
content::RenderWidgetHostImpl::From(
browser_->web_contents()->GetRenderViewHost()->GetWidget())
->SendScreenRects();
}
void CefBrowserPlatformDelegateNativeLinux::SizeTo(int width, int height) {
if (window_x11_) {
window_x11_->SetBounds(
gfx::Rect(window_x11_->bounds().origin(), gfx::Size(width, height)));
}
}
gfx::Point CefBrowserPlatformDelegateNativeLinux::GetScreenPoint(
const gfx::Point& view) const {
if (windowless_handler_)
return windowless_handler_->GetParentScreenPoint(view);
if (!window_x11_)
return view;
// We can't use aura::Window::GetBoundsInScreen on Linux because it will
// return bounds from DesktopWindowTreeHostX11 which in our case is relative
// to the parent window instead of the root window (screen).
const gfx::Rect& bounds_in_screen = window_x11_->GetBoundsInScreen();
return gfx::Point(bounds_in_screen.x() + view.x(),
bounds_in_screen.y() + view.y());
}
void CefBrowserPlatformDelegateNativeLinux::ViewText(const std::string& text) {
char buff[] = "/tmp/CEFSourceXXXXXX";
int fd = mkstemp(buff);
if (fd == -1)
return;
FILE* srcOutput = fdopen(fd, "w+");
if (!srcOutput)
return;
if (fputs(text.c_str(), srcOutput) < 0) {
fclose(srcOutput);
return;
}
fclose(srcOutput);
std::string newName(buff);
newName.append(".txt");
if (rename(buff, newName.c_str()) != 0)
return;
std::string openCommand("xdg-open ");
openCommand += newName;
int result = system(openCommand.c_str());
ALLOW_UNUSED_LOCAL(result);
}
bool CefBrowserPlatformDelegateNativeLinux::HandleKeyboardEvent(
const content::NativeWebKeyboardEvent& event) {
// TODO(cef): Is something required here to handle shortcut keys?
return false;
}
void CefBrowserPlatformDelegateNativeLinux::HandleExternalProtocol(
const GURL& url) {}
void CefBrowserPlatformDelegateNativeLinux::TranslateKeyEvent(
content::NativeWebKeyboardEvent& result,
const CefKeyEvent& key_event) const {
result.windows_key_code = key_event.windows_key_code;
result.native_key_code = key_event.native_key_code;
result.is_system_key = key_event.is_system_key ? 1 : 0;
switch (key_event.type) {
case KEYEVENT_RAWKEYDOWN:
case KEYEVENT_KEYDOWN:
result.SetType(blink::WebInputEvent::kRawKeyDown);
break;
case KEYEVENT_KEYUP:
result.SetType(blink::WebInputEvent::kKeyUp);
break;
case KEYEVENT_CHAR:
result.SetType(blink::WebInputEvent::kChar);
break;
default:
NOTREACHED();
}
// Populate DOM values that will be passed to JavaScript handlers via
// KeyboardEvent.
result.dom_code = static_cast<int>(
ui::KeycodeConverter::NativeKeycodeToDomCode(key_event.native_key_code));
int keysym = ui::XKeysymForWindowsKeyCode(
static_cast<ui::KeyboardCode>(key_event.windows_key_code),
!!(key_event.modifiers & EVENTFLAG_SHIFT_DOWN));
base::char16 ch = ui::GetUnicodeCharacterFromXKeySym(keysym);
result.dom_key = static_cast<int>(ui::XKeySymToDomKey(keysym, ch));
result.text[0] = key_event.character;
result.unmodified_text[0] = key_event.unmodified_character;
result.SetModifiers(result.GetModifiers() |
TranslateModifiers(key_event.modifiers));
}
void CefBrowserPlatformDelegateNativeLinux::TranslateClickEvent(
blink::WebMouseEvent& result,
const CefMouseEvent& mouse_event,
CefBrowserHost::MouseButtonType type,
bool mouseUp,
int clickCount) const {
TranslateMouseEvent(result, mouse_event);
switch (type) {
case MBT_LEFT:
result.SetType(mouseUp ? blink::WebInputEvent::kMouseUp
: blink::WebInputEvent::kMouseDown);
result.button = blink::WebMouseEvent::Button::kLeft;
break;
case MBT_MIDDLE:
result.SetType(mouseUp ? blink::WebInputEvent::kMouseUp
: blink::WebInputEvent::kMouseDown);
result.button = blink::WebMouseEvent::Button::kMiddle;
break;
case MBT_RIGHT:
result.SetType(mouseUp ? blink::WebInputEvent::kMouseUp
: blink::WebInputEvent::kMouseDown);
result.button = blink::WebMouseEvent::Button::kRight;
break;
default:
NOTREACHED();
}
result.click_count = clickCount;
}
void CefBrowserPlatformDelegateNativeLinux::TranslateMoveEvent(
blink::WebMouseEvent& result,
const CefMouseEvent& mouse_event,
bool mouseLeave) const {
TranslateMouseEvent(result, mouse_event);
if (!mouseLeave) {
result.SetType(blink::WebInputEvent::kMouseMove);
if (mouse_event.modifiers & EVENTFLAG_LEFT_MOUSE_BUTTON)
result.button = blink::WebMouseEvent::Button::kLeft;
else if (mouse_event.modifiers & EVENTFLAG_MIDDLE_MOUSE_BUTTON)
result.button = blink::WebMouseEvent::Button::kMiddle;
else if (mouse_event.modifiers & EVENTFLAG_RIGHT_MOUSE_BUTTON)
result.button = blink::WebMouseEvent::Button::kRight;
else
result.button = blink::WebMouseEvent::Button::kNoButton;
} else {
result.SetType(blink::WebInputEvent::kMouseLeave);
result.button = blink::WebMouseEvent::Button::kNoButton;
}
result.click_count = 0;
}
void CefBrowserPlatformDelegateNativeLinux::TranslateWheelEvent(
blink::WebMouseWheelEvent& result,
const CefMouseEvent& mouse_event,
int deltaX,
int deltaY) const {
result = blink::WebMouseWheelEvent();
TranslateMouseEvent(result, mouse_event);
result.SetType(blink::WebInputEvent::kMouseWheel);
static const double scrollbarPixelsPerGtkTick = 40.0;
result.delta_x = deltaX;
result.delta_y = deltaY;
result.wheel_ticks_x = deltaX / scrollbarPixelsPerGtkTick;
result.wheel_ticks_y = deltaY / scrollbarPixelsPerGtkTick;
result.has_precise_scrolling_deltas = true;
if (mouse_event.modifiers & EVENTFLAG_LEFT_MOUSE_BUTTON)
result.button = blink::WebMouseEvent::Button::kLeft;
else if (mouse_event.modifiers & EVENTFLAG_MIDDLE_MOUSE_BUTTON)
result.button = blink::WebMouseEvent::Button::kMiddle;
else if (mouse_event.modifiers & EVENTFLAG_RIGHT_MOUSE_BUTTON)
result.button = blink::WebMouseEvent::Button::kRight;
else
result.button = blink::WebMouseEvent::Button::kNoButton;
}
CefEventHandle CefBrowserPlatformDelegateNativeLinux::GetEventHandle(
const content::NativeWebKeyboardEvent& event) const {
if (!event.os_event)
return NULL;
return const_cast<CefEventHandle>(event.os_event->native_event());
}
std::unique_ptr<CefMenuRunner>
CefBrowserPlatformDelegateNativeLinux::CreateMenuRunner() {
return base::WrapUnique(new CefMenuRunnerLinux);
}
void CefBrowserPlatformDelegateNativeLinux::TranslateMouseEvent(
blink::WebMouseEvent& result,
const CefMouseEvent& mouse_event) const {
// position
result.SetPositionInWidget(mouse_event.x, mouse_event.y);
const gfx::Point& screen_pt =
GetScreenPoint(gfx::Point(mouse_event.x, mouse_event.y));
result.SetPositionInScreen(screen_pt.x(), screen_pt.y());
// modifiers
result.SetModifiers(result.GetModifiers() |
TranslateModifiers(mouse_event.modifiers));
// timestamp
result.SetTimeStamp(base::TimeTicks() +
base::TimeDelta::FromSeconds(GetSystemUptime()));
result.pointer_type = blink::WebPointerProperties::PointerType::kMouse;
}
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