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// Copyright (c) 2009 The Chromium 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 "gfx/gtk_native_view_id_manager.h"
#include <gtk/gtk.h>
#include <gdk/gdkx.h>
#include <gdk/gdk.h>
#include <X11/Xlib.h>
#include "base/logging.h"
#include "base/rand_util.h"
#include "gfx/rect.h"
// -----------------------------------------------------------------------------
// Bounce functions for GTK to callback into a C++ object...
namespace {
void OnRealize(gfx::NativeView widget, void* arg) {
GtkNativeViewManager* manager = reinterpret_cast<GtkNativeViewManager*>(arg);
manager->OnRealize(widget);
}
void OnUnrealize(gfx::NativeView widget, void *arg) {
GtkNativeViewManager* manager = reinterpret_cast<GtkNativeViewManager*>(arg);
manager->OnUnrealize(widget);
}
void OnDestroy(GtkObject* obj, void* arg) {
GtkNativeViewManager* manager = reinterpret_cast<GtkNativeViewManager*>(arg);
manager->OnDestroy(reinterpret_cast<GtkWidget*>(obj));
}
void OnSizeAllocate(gfx::NativeView widget,
GtkAllocation* alloc,
void* arg) {
GtkNativeViewManager* manager = reinterpret_cast<GtkNativeViewManager*>(arg);
manager->OnSizeAllocate(widget, alloc);
}
XID CreateOverlay(XID underlying) {
XID overlay = 0;
Display* dpy = gdk_x11_get_default_xdisplay();
// Prevent interference with reparenting/mapping of overlay
XSetWindowAttributes attr;
attr.override_redirect = True;
if (underlying) {
XID root;
int x, y;
unsigned int width, height;
unsigned int border_width;
unsigned int depth;
XGetGeometry(
dpy, underlying, &root, &x, &y,
&width, &height, &border_width, &depth);
overlay = XCreateWindow(
dpy, // display
underlying, // parent
0, 0, width, height, // x, y, width, height
0, // border width
CopyFromParent, // depth
InputOutput, // class
CopyFromParent, // visual
CWOverrideRedirect, // value mask
&attr); // value attributes
XMapWindow(dpy, overlay);
} else {
overlay = XCreateWindow(
dpy, // display
gdk_x11_get_default_root_xwindow(), // parent
0, 0, 1, 1, // x, y, width, height
0, // border width
CopyFromParent, // depth
InputOutput, // class
CopyFromParent, // visual
CWOverrideRedirect, // value mask
&attr); // value attributes
}
XSync(dpy, False);
return overlay;
}
}
// -----------------------------------------------------------------------------
// -----------------------------------------------------------------------------
// Public functions...
GtkNativeViewManager::GtkNativeViewManager() {
}
GtkNativeViewManager::~GtkNativeViewManager() {
}
gfx::NativeViewId GtkNativeViewManager::GetIdForWidget(gfx::NativeView widget) {
// This is just for unit tests:
if (!widget)
return 0;
AutoLock locked(lock_);
std::map<gfx::NativeView, gfx::NativeViewId>::const_iterator i =
native_view_to_id_.find(widget);
if (i != native_view_to_id_.end())
return i->second;
gfx::NativeViewId new_id =
static_cast<gfx::NativeViewId>(base::RandUint64());
while (id_to_info_.find(new_id) != id_to_info_.end())
new_id = static_cast<gfx::NativeViewId>(base::RandUint64());
NativeViewInfo info;
if (GTK_WIDGET_REALIZED(widget)) {
GdkWindow *gdk_window = widget->window;
CHECK(gdk_window);
info.x_window_id = GDK_WINDOW_XID(gdk_window);
}
native_view_to_id_[widget] = new_id;
id_to_info_[new_id] = info;
g_signal_connect(widget, "realize", G_CALLBACK(::OnRealize), this);
g_signal_connect(widget, "unrealize", G_CALLBACK(::OnUnrealize), this);
g_signal_connect(widget, "destroy", G_CALLBACK(::OnDestroy), this);
g_signal_connect(
widget, "size-allocate", G_CALLBACK(::OnSizeAllocate), this);
return new_id;
}
bool GtkNativeViewManager::GetXIDForId(XID* output, gfx::NativeViewId id) {
AutoLock locked(lock_);
std::map<gfx::NativeViewId, NativeViewInfo>::const_iterator i =
id_to_info_.find(id);
if (i == id_to_info_.end())
return false;
*output = i->second.x_window_id;
return true;
}
bool GtkNativeViewManager::GetPermanentXIDForId(XID* output,
gfx::NativeViewId id) {
AutoLock locked(lock_);
std::map<gfx::NativeViewId, NativeViewInfo>::iterator i =
id_to_info_.find(id);
if (i == id_to_info_.end())
return false;
if (!i->second.permanent_window_id) {
i->second.permanent_window_id = CreateOverlay(i->second.x_window_id);
}
*output = i->second.permanent_window_id;
return true;
}
// -----------------------------------------------------------------------------
// -----------------------------------------------------------------------------
// Private functions...
gfx::NativeViewId GtkNativeViewManager::GetWidgetId(gfx::NativeView widget) {
lock_.AssertAcquired();
std::map<gfx::NativeView, gfx::NativeViewId>::const_iterator i =
native_view_to_id_.find(widget);
CHECK(i != native_view_to_id_.end());
return i->second;
}
void GtkNativeViewManager::OnRealize(gfx::NativeView widget) {
AutoLock locked(lock_);
const gfx::NativeViewId id = GetWidgetId(widget);
std::map<gfx::NativeViewId, NativeViewInfo>::iterator i =
id_to_info_.find(id);
CHECK(i != id_to_info_.end());
CHECK(widget->window);
i->second.x_window_id = GDK_WINDOW_XID(widget->window);
if (i->second.permanent_window_id) {
Display* dpy = gdk_x11_get_default_xdisplay();
XReparentWindow(
dpy, i->second.permanent_window_id, i->second.x_window_id, 0, 0);
XMapWindow(dpy, i->second.permanent_window_id);
XSync(dpy, False);
}
}
void GtkNativeViewManager::OnUnrealize(gfx::NativeView widget) {
AutoLock unrealize_locked(unrealize_lock_);
AutoLock locked(lock_);
const gfx::NativeViewId id = GetWidgetId(widget);
std::map<gfx::NativeViewId, NativeViewInfo>::iterator i =
id_to_info_.find(id);
CHECK(i != id_to_info_.end());
i->second.x_window_id = 0;
if (i->second.permanent_window_id) {
Display* dpy = gdk_x11_get_default_xdisplay();
XUnmapWindow(dpy, i->second.permanent_window_id);
XReparentWindow(dpy, i->second.permanent_window_id,
gdk_x11_get_default_root_xwindow(), 0, 0);
XSync(dpy, False);
}
}
void GtkNativeViewManager::OnDestroy(gfx::NativeView widget) {
AutoLock locked(lock_);
std::map<gfx::NativeView, gfx::NativeViewId>::iterator i =
native_view_to_id_.find(widget);
CHECK(i != native_view_to_id_.end());
std::map<gfx::NativeViewId, NativeViewInfo>::iterator j =
id_to_info_.find(i->second);
CHECK(j != id_to_info_.end());
if (j->second.permanent_window_id) {
XDestroyWindow(gdk_x11_get_default_xdisplay(),
j->second.permanent_window_id);
}
native_view_to_id_.erase(i);
id_to_info_.erase(j);
}
void GtkNativeViewManager::OnSizeAllocate(
gfx::NativeView widget, GtkAllocation *alloc) {
AutoLock locked(lock_);
const gfx::NativeViewId id = GetWidgetId(widget);
std::map<gfx::NativeViewId, NativeViewInfo>::iterator i =
id_to_info_.find(id);
if (i->second.permanent_window_id) {
XResizeWindow(gdk_x11_get_default_xdisplay(),
i->second.permanent_window_id,
alloc->width, alloc->height);
}
}
// -----------------------------------------------------------------------------
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