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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 "views/controls/native/native_view_host_gtk.h"
#include <gtk/gtk.h>
#include "base/logging.h"
#include "views/controls/native/native_view_host.h"
#include "views/widget/widget_gtk.h"
namespace views {
////////////////////////////////////////////////////////////////////////////////
// NativeViewHostGtk, public:
NativeViewHostGtk::NativeViewHostGtk(NativeViewHost* host)
: host_(host),
installed_clip_(false),
destroy_signal_id_(0) {
}
NativeViewHostGtk::~NativeViewHostGtk() {
}
// static
View* NativeViewHostGtk::GetViewForNative(GtkWidget* widget) {
gpointer user_data = g_object_get_data(G_OBJECT(widget), "chrome-view");
return static_cast<View*>(user_data);
}
// static
void NativeViewHostGtk::SetViewForNative(GtkWidget* widget, View* view) {
g_object_set_data(G_OBJECT(widget), "chrome-view", view);
}
////////////////////////////////////////////////////////////////////////////////
// NativeViewHostGtk, NativeViewHostWrapper implementation:
void NativeViewHostGtk::NativeViewAttached() {
DCHECK(host_->native_view());
GtkWidget* current_parent = gtk_widget_get_parent(host_->native_view());
GtkWidget* new_parent = host_->GetWidget()->GetNativeView();
// Only adjust the parent if the parent actually changed.
if (current_parent != new_parent) {
// First hide the new window. We don't want anything to draw (like sub-hwnd
// borders), when we change the parent below.
gtk_widget_hide(host_->native_view());
if (current_parent) {
gtk_container_remove(GTK_CONTAINER(current_parent),
host_->native_view());
}
// Adds a mapping between the GtkWidget and us.
SetViewForNative(host_->native_view(), host_);
if (!destroy_signal_id_) {
destroy_signal_id_ = g_signal_connect(G_OBJECT(host_->native_view()),
"destroy", G_CALLBACK(CallDestroy),
NULL);
}
// Set the parent.
static_cast<WidgetGtk*>(host_->GetWidget())->AddChild(host_->native_view());
}
// Always layout though.
host_->Layout();
// TODO(port): figure out focus.
// FocusManager::InstallFocusSubclass(
// hwnd, associated_focus_view()_ ? associated_focus_view() : this);
}
void NativeViewHostGtk::NativeViewDetaching() {
DCHECK(host_->native_view());
g_signal_handler_disconnect(G_OBJECT(host_->native_view()),
destroy_signal_id_);
destroy_signal_id_ = 0;
// TODO(port): focus.
// FocusManager::UninstallFocusSubclass(native_view());
installed_clip_ = false;
}
void NativeViewHostGtk::AddedToWidget() {
if (!host_->native_view())
return;
WidgetGtk* parent_widget = static_cast<WidgetGtk*>(host_->GetWidget());
GtkWidget* widget_parent = gtk_widget_get_parent(host_->native_view());
GtkWidget* parent_widget_widget = parent_widget->child_widget_parent();
if (widget_parent != parent_widget_widget) {
g_object_ref(host_->native_view());
if (widget_parent)
gtk_container_remove(GTK_CONTAINER(widget_parent), host_->native_view());
gtk_container_add(GTK_CONTAINER(parent_widget_widget),
host_->native_view());
g_object_unref(host_->native_view());
}
if (host_->IsVisibleInRootView())
gtk_widget_show(host_->native_view());
else
gtk_widget_hide(host_->native_view());
host_->Layout();
}
void NativeViewHostGtk::RemovedFromWidget() {
if (!host_->native_view())
return;
WidgetGtk* parent_widget = static_cast<WidgetGtk*>(host_->GetWidget());
gtk_widget_hide(host_->native_view());
if (parent_widget) {
gtk_container_remove(GTK_CONTAINER(parent_widget->child_widget_parent()),
host_->native_view());
}
}
void NativeViewHostGtk::InstallClip(int x, int y, int w, int h) {
DCHECK(w > 0 && h > 0);
bool has_window =
(GTK_WIDGET_FLAGS(host_->native_view()) & GTK_NO_WINDOW) == 0;
if (!has_window) {
// Clip is only supported on GtkWidgets that have windows. If this becomes
// an issue (as it may be in the options dialog) we'll need to wrap the
// widget in a GtkFixed with a window. We have to do this as not all widgets
// support turning on GTK_NO_WINDOW (for example, buttons don't appear to
// draw anything when they have a window).
// NOTREACHED();
return;
}
DCHECK(has_window);
// Unset the current region.
gdk_window_shape_combine_region(host_->native_view()->window, NULL, 0, 0);
// Set a new region.
// TODO: using shapes is a bit expensive. Should investigated if there is
// another more efficient way to accomplish this.
GdkRectangle clip_rect = { x, y, w, h };
GdkRegion* clip_region = gdk_region_rectangle(&clip_rect);
gdk_window_shape_combine_region(host_->native_view()->window, clip_region, x,
y);
gdk_region_destroy(clip_region);
installed_clip_ = true;
}
bool NativeViewHostGtk::HasInstalledClip() {
return installed_clip_;
}
void NativeViewHostGtk::UninstallClip() {
gtk_widget_shape_combine_mask(host_->native_view(), NULL, 0, 0);
installed_clip_ = false;
}
void NativeViewHostGtk::ShowWidget(int x, int y, int w, int h) {
WidgetGtk* parent = static_cast<WidgetGtk*>(host_->GetWidget());
parent->PositionChild(host_->native_view(), x, y, w, h);
gtk_widget_show(host_->native_view());
}
void NativeViewHostGtk::HideWidget() {
gtk_widget_hide(host_->native_view());
}
void NativeViewHostGtk::SetFocus() {
NOTIMPLEMENTED();
}
////////////////////////////////////////////////////////////////////////////////
// NativeViewHostGtk, private:
// static
void NativeViewHostGtk::CallDestroy(GtkObject* object) {
View* view = GetViewForNative(GTK_WIDGET(object));
if (!view)
return;
return static_cast<NativeViewHost*>(view)->NativeViewDestroyed();
}
////////////////////////////////////////////////////////////////////////////////
// NativeViewHostWrapper, public:
// static
NativeViewHostWrapper* NativeViewHostWrapper::CreateWrapper(
NativeViewHost* host) {
return new NativeViewHostGtk(host);
}
} // namespace views
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