chrome/browser/ui/views/frame/contents_web_view.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "chrome/browser/ui/views/frame/contents_web_view.h"
   6
   7 #include "chrome/browser/themes/theme_properties.h"
   8 #include "chrome/browser/ui/views/status_bubble_views.h"
   9 #include "content/public/browser/web_contents.h"
  10 #include "ui/aura/window.h"
  11 #include "ui/base/theme_provider.h"
  12 #include "ui/compositor/layer_tree_owner.h"
  13 #include "ui/views/background.h"
  14 #include "ui/wm/core/window_util.h"
  15
  16 ContentsWebView::ContentsWebView(content::BrowserContext* browser_context)
  17     : views::WebView(browser_context),
  18       status_bubble_(NULL) {
  19 }
  20
  21 ContentsWebView::~ContentsWebView() {
  22 }
  23
  24 void ContentsWebView::SetStatusBubble(StatusBubbleViews* status_bubble) {
  25   status_bubble_ = status_bubble;
  26   DCHECK(!status_bubble_ || status_bubble_->base_view() == this);
  27   if (status_bubble_)
  28     status_bubble_->Reposition();
  29 }
  30
  31 bool ContentsWebView::NeedsNotificationWhenVisibleBoundsChange() const {
  32   return true;
  33 }
  34
  35 void ContentsWebView::OnVisibleBoundsChanged() {
  36   if (status_bubble_)
  37     status_bubble_->Reposition();
  38 }
  39
  40 void ContentsWebView::ViewHierarchyChanged(
  41     const ViewHierarchyChangedDetails& details) {
  42   WebView::ViewHierarchyChanged(details);
  43   if (details.is_add)
  44     OnThemeChanged();
  45 }
  46
  47 void ContentsWebView::OnThemeChanged() {
  48   ui::ThemeProvider* const theme = GetThemeProvider();
  49   if (!theme)
  50     return;
  51
  52   // Set the background color to a dark tint of the new tab page's background
  53   // color.  This is the color filled within the WebView's bounds when its child
  54   // view is sized specially for fullscreen tab capture.  See WebView header
  55   // file comments for more details.
  56   const int kBackgroundBrightness = 0x33;  // 20%
  57   const SkColor ntp_background =
  58       theme->GetColor(ThemeProperties::COLOR_NTP_BACKGROUND);
  59   set_background(views::Background::CreateSolidBackground(
  60       SkColorGetR(ntp_background) * kBackgroundBrightness / 0xFF,
  61       SkColorGetG(ntp_background) * kBackgroundBrightness / 0xFF,
  62       SkColorGetB(ntp_background) * kBackgroundBrightness / 0xFF,
  63       SkColorGetA(ntp_background)));
  64 }
  65
  66 void ContentsWebView::OnLayerRecreated(ui::Layer* old_layer,
  67                                        ui::Layer* new_layer) {
  68   if (!cloned_layer_tree_)
  69     return;
  70
  71   // Our layer has been recreated and we have a clone of the WebContents
  72   // layer. Combined this means we're about to be destroyed and an animation is
  73   // in effect. The animation cloned our layer, but it won't create another
  74   // clone of the WebContents layer (|cloned_layer_tree_|). Another clone
  75   // is not created as the clone has no owner (see CloneChildren()). Because we
  76   // want the WebContents layer clone to be animated we move it to the
  77   // old_layer, which is the layer the animation happens on. This animation ends
  78   // up owning the layer (and all its descendants).
  79   old_layer->Add(cloned_layer_tree_->release());
  80   cloned_layer_tree_.reset();
  81 }
  82
  83 void ContentsWebView::CloneWebContentsLayer() {
  84   if (!web_contents())
  85     return;
  86   cloned_layer_tree_ = wm::RecreateLayers(web_contents()->GetNativeView());
  87   if (!cloned_layer_tree_ || !cloned_layer_tree_->root()) {
  88     cloned_layer_tree_.reset();
  89     return;
  90   }
  91
  92   SetPaintToLayer(true);
  93   set_layer_owner_delegate(this);
  94
  95   // The cloned layer is in a different coordinate system them our layer (which
  96   // is now the new parent of the cloned layer). Convert coordinates so that the
  97   // cloned layer appears at the right location.
  98   gfx::Point origin;
  99   ui::Layer::ConvertPointToLayer(cloned_layer_tree_->root(), layer(), &origin);
 100   cloned_layer_tree_->root()->SetBounds(
 101       gfx::Rect(origin, cloned_layer_tree_->root()->bounds().size()));
 102   layer()->Add(cloned_layer_tree_->root());
 103 }
 104
 105 void ContentsWebView::DestroyClonedLayer() {
 106   cloned_layer_tree_.reset();
 107   SetPaintToLayer(false);
 108   set_layer_owner_delegate(NULL);
 109 }