RedirectedXCompositeWindow::~RedirectedXCompositeWindow()
{
ASSERT(m_display);
ASSERT(m_damage);
ASSERT(m_window);
ASSERT(m_parentWindow);
xDamageNotifier().remove(m_window);
XDamageDestroy(m_display, m_damage);
XDestroyWindow(m_display, m_window);
XDestroyWindow(m_display, m_parentWindow);
cleanupPixmapAndPixmapSurface();
}
RedirectedXCompositeWindow::~RedirectedXCompositeWindow()
{
ASSERT(m_display);
ASSERT(m_damage);
ASSERT(m_window);
ASSERT(m_parentWindow);
xDamageNotifier().remove(m_window.get());
// Explicitly reset these because we need to ensure it happens in this order.
m_damage.reset();
m_window.reset();
m_parentWindow.reset();
}
RedirectedXCompositeWindow::RedirectedXCompositeWindow(GdkWindow* parentWindow, std::function<void()> damageNotify)
: m_display(GDK_DISPLAY_XDISPLAY(gdk_window_get_display(parentWindow)))
, m_window(0)
, m_parentWindow(0)
, m_pixmap(0)
, m_damage(0)
, m_needsNewPixmapAfterResize(false)
{
Screen* screen = DefaultScreenOfDisplay(m_display);
GdkVisual* visual = gdk_window_get_visual(parentWindow);
Colormap colormap = XCreateColormap(m_display, RootWindowOfScreen(screen), GDK_VISUAL_XVISUAL(visual), AllocNone);
// This is based on code from Chromium: src/content/common/gpu/image_transport_surface_linux.cc
XSetWindowAttributes windowAttributes;
windowAttributes.override_redirect = True;
windowAttributes.colormap = colormap;
// CWBorderPixel must be present when the depth doesn't match the parent's one.
// See http://cgit.freedesktop.org/xorg/xserver/tree/dix/window.c?id=xorg-server-1.16.0#n703.
windowAttributes.border_pixel = 0;
m_parentWindow = XCreateWindow(m_display,
RootWindowOfScreen(screen),
WidthOfScreen(screen) + 1, 0, 1, 1,
0,
gdk_visual_get_depth(visual),
InputOutput,
GDK_VISUAL_XVISUAL(visual),
CWOverrideRedirect | CWColormap | CWBorderPixel,
&windowAttributes);
XMapWindow(m_display, m_parentWindow);
windowAttributes.event_mask = StructureNotifyMask;
windowAttributes.override_redirect = False;
// Create the window of at last 1x1 since X doesn't allow to create empty windows.
m_window = XCreateWindow(m_display,
m_parentWindow,
0, 0,
std::max(1, m_size.width()),
std::max(1, m_size.height()),
0,
CopyFromParent,
InputOutput,
CopyFromParent,
CWEventMask,
&windowAttributes);
XMapWindow(m_display, m_window);
XFreeColormap(m_display, colormap);
xDamageNotifier().add(m_window, WTF::move(damageNotify));
while (1) {
XEvent event;
XWindowEvent(m_display, m_window, StructureNotifyMask, &event);
if (event.type == MapNotify && event.xmap.window == m_window)
break;
}
XSelectInput(m_display, m_window, NoEventMask);
XCompositeRedirectWindow(m_display, m_window, CompositeRedirectManual);
m_damage = XDamageCreate(m_display, m_window, XDamageReportNonEmpty);
}
RedirectedXCompositeWindow::RedirectedXCompositeWindow(WebPageProxy& webPage, const IntSize& initialSize, std::function<void()>&& damageNotify)
: m_webPage(webPage)
, m_display(GDK_DISPLAY_XDISPLAY(gdk_window_get_display(gtk_widget_get_parent_window(webPage.viewWidget()))))
, m_size(initialSize)
{
m_size.scale(m_webPage.deviceScaleFactor());
ASSERT(downcast<PlatformDisplayX11>(PlatformDisplay::sharedDisplay()).native() == m_display);
Screen* screen = DefaultScreenOfDisplay(m_display);
GdkVisual* visual = gdk_window_get_visual(gtk_widget_get_parent_window(webPage.viewWidget()));
XUniqueColormap colormap(XCreateColormap(m_display, RootWindowOfScreen(screen), GDK_VISUAL_XVISUAL(visual), AllocNone));
// This is based on code from Chromium: src/content/common/gpu/image_transport_surface_linux.cc
XSetWindowAttributes windowAttributes;
windowAttributes.override_redirect = True;
windowAttributes.colormap = colormap.get();
// CWBorderPixel must be present when the depth doesn't match the parent's one.
// See http://cgit.freedesktop.org/xorg/xserver/tree/dix/window.c?id=xorg-server-1.16.0#n703.
windowAttributes.border_pixel = 0;
m_parentWindow = XCreateWindow(m_display,
RootWindowOfScreen(screen),
WidthOfScreen(screen) + 1, 0, 1, 1,
0,
gdk_visual_get_depth(visual),
InputOutput,
GDK_VISUAL_XVISUAL(visual),
CWOverrideRedirect | CWColormap | CWBorderPixel,
&windowAttributes);
XMapWindow(m_display, m_parentWindow.get());
windowAttributes.event_mask = StructureNotifyMask;
windowAttributes.override_redirect = False;
// Create the window of at last 1x1 since X doesn't allow to create empty windows.
m_window = XCreateWindow(m_display,
m_parentWindow.get(),
0, 0,
std::max(1, m_size.width()),
std::max(1, m_size.height()),
0,
CopyFromParent,
InputOutput,
CopyFromParent,
CWEventMask,
&windowAttributes);
XMapWindow(m_display, m_window.get());
xDamageNotifier().add(m_window.get(), WTFMove(damageNotify));
while (1) {
XEvent event;
XWindowEvent(m_display, m_window.get(), StructureNotifyMask, &event);
if (event.type == MapNotify && event.xmap.window == m_window.get())
break;
}
XSelectInput(m_display, m_window.get(), NoEventMask);
XCompositeRedirectWindow(m_display, m_window.get(), CompositeRedirectManual);
if (!m_size.isEmpty())
createNewPixampAndPixampSurface();
m_damage = XDamageCreate(m_display, m_window.get(), XDamageReportNonEmpty);
}
