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// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/ui/views/frame/contents_web_view.h"
#include "chrome/browser/ui/color/chrome_color_id.h"
#include "chrome/browser/ui/views/frame/web_contents_close_handler.h"
#include "chrome/browser/ui/views/status_bubble_views.h"
#include "components/search/ntp_features.h"
#include "content/public/browser/render_widget_host_view.h"
#include "content/public/browser/web_contents.h"
#include "third_party/skia/include/core/SkColor.h"
#include "ui/base/metadata/metadata_impl_macros.h"
#include "ui/color/color_provider.h"
#include "ui/compositor/layer.h"
#include "ui/compositor/layer_tree_owner.h"
#include "ui/compositor/layer_type.h"
#include "ui/views/view_class_properties.h"
#if defined(USE_AURA)
#include "ui/aura/window.h"
#include "ui/wm/core/window_util.h"
#endif
DEFINE_CLASS_ELEMENT_IDENTIFIER_VALUE(ContentsWebView,
kContentsWebViewElementId);
ContentsWebView::ContentsWebView(content::BrowserContext* browser_context)
: views::WebView(browser_context) {
// Draws the ContentsWebView background.
SetPaintToLayer(ui::LAYER_SOLID_COLOR);
SetProperty(views::kElementIdentifierKey, kContentsWebViewElementId);
status_bubble_ = std::make_unique<StatusBubbleViews>(this);
status_bubble_->Reposition();
web_contents_close_handler_ = std::make_unique<WebContentsCloseHandler>(this);
}
ContentsWebView::~ContentsWebView() = default;
StatusBubbleViews* ContentsWebView::GetStatusBubble() const {
if (status_bubble_) {
return status_bubble_.get();
}
return nullptr;
}
WebContentsCloseHandler* ContentsWebView::GetWebContentsCloseHandler() const {
return web_contents_close_handler_.get();
}
void ContentsWebView::SetBackgroundVisible(bool background_visible) {
background_visible_ = background_visible;
if (GetWidget()) {
UpdateBackgroundColor();
}
}
const gfx::RoundedCornersF& ContentsWebView::GetBackgroundRadii() const {
const ui::Layer* background_layer = layer();
CHECK(background_layer);
return background_layer->rounded_corner_radii();
}
void ContentsWebView::SetBackgroundRadii(const gfx::RoundedCornersF& radii) {
ui::Layer* background_layer = layer();
CHECK(background_layer);
background_layer->SetRoundedCornerRadius(radii);
background_layer->SetIsFastRoundedCorner(true);
}
bool ContentsWebView::GetNeedsNotificationWhenVisibleBoundsChange() const {
return true;
}
void ContentsWebView::OnVisibleBoundsChanged() {
if (status_bubble_) {
status_bubble_->Reposition();
}
}
void ContentsWebView::OnThemeChanged() {
views::WebView::OnThemeChanged();
UpdateBackgroundColor();
}
void ContentsWebView::OnLetterboxingChanged() {
if (GetWidget()) {
UpdateBackgroundColor();
}
}
void ContentsWebView::SetWebContents(content::WebContents* web_contents) {
views::WebView::SetWebContents(web_contents);
if (web_contents == nullptr) {
status_bubble_ = nullptr;
// Early exit: Without web contents, views dependent on ContentsWebView's
// bounds cannot be properly created or positioned. These views will
// initialize later when valid web contents exist.
return;
}
if (status_bubble_ == nullptr) {
status_bubble_ = std::make_unique<StatusBubbleViews>(this);
status_bubble_->Reposition();
}
}
void ContentsWebView::UpdateBackgroundColor() {
const SkColor color = GetColorProvider()->GetColor(
is_letterboxing() ? kColorWebContentsBackgroundLetterboxing
: kColorWebContentsBackground);
ui::Layer* background_layer = layer();
background_layer->SetColor(background_visible_ ? color : SK_ColorTRANSPARENT);
if (web_contents()) {
content::RenderWidgetHostView* rwhv =
web_contents()->GetRenderWidgetHostView();
if (rwhv) {
rwhv->SetBackgroundColor(background_visible_ ? color
: SK_ColorTRANSPARENT);
}
}
}
std::unique_ptr<ui::Layer> ContentsWebView::RecreateLayer() {
std::unique_ptr<ui::Layer> old_layer = View::RecreateLayer();
if (cloned_layer_tree_ && old_layer) {
// Our layer has been recreated and we have a clone of the WebContents
// layer. Combined this means we're about to be destroyed and an animation
// is in effect. The animation cloned our layer, but it won't create another
// clone of the WebContents layer (|cloned_layer_tree_|). Another clone
// is not created as the clone has no owner (see CloneChildren()). Because
// we want the WebContents layer clone to be animated we move it to the
// old_layer, which is the layer the animation happens on. This animation
// ends up owning the layer (and all its descendants).
old_layer->Add(cloned_layer_tree_->release());
cloned_layer_tree_.reset();
}
return old_layer;
}
void ContentsWebView::CloneWebContentsLayer() {
if (!web_contents()) {
return;
}
#if defined(USE_AURA)
// We don't need to clone the layers on non-Aura (Mac), because closing an
// NSWindow does not animate.
cloned_layer_tree_ = wm::RecreateLayers(web_contents()->GetNativeView());
#endif
if (!cloned_layer_tree_ || !cloned_layer_tree_->root()) {
cloned_layer_tree_.reset();
return;
}
// The cloned layer is in a different coordinate system than our layer (which
// is now the new parent of the cloned layer). Convert coordinates so that the
// cloned layer appears at the right location.
gfx::PointF origin;
ui::Layer::ConvertPointToLayer(cloned_layer_tree_->root(), layer(),
/*use_target_transform=*/true, &origin);
cloned_layer_tree_->root()->SetBounds(
gfx::Rect(gfx::ToFlooredPoint(origin),
cloned_layer_tree_->root()->bounds().size()));
layer()->Add(cloned_layer_tree_->root());
}
void ContentsWebView::DestroyClonedLayer() {
cloned_layer_tree_.reset();
}
void ContentsWebView::RenderViewReady() {
// Set the background color to be the theme's ntp background on startup.
if (GetWidget()) {
UpdateBackgroundColor();
}
WebView::RenderViewReady();
}
BEGIN_METADATA(ContentsWebView)
END_METADATA
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