Media Remoting: Add interstitial elements to media element shadow dom.

third_party/WebKit/Source/core/paint/MediaControlsPainter.cpp

 /*
  * Copyright (C) 2009 Apple Inc.
  * Copyright (C) 2009 Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
@@ skipping 39 matching lines @@
 static const int kMediaSliderThumbTouchWidth = 36;  // Touch zone size.
 static const int kMediaSliderThumbTouchHeight = 48;
 static const int kMediaSliderThumbPaintWidth = 12;  // Painted area.
 static const int kMediaSliderThumbPaintHeight = 12;
 
 // Overlay play button size. If this changes, it must also be changed in
 // core/html/shadow/MediaControls.cpp.
 static const int kMediaOverlayPlayButtonWidth = 48;
 static const int kMediaOverlayPlayButtonHeight = 48;
 
+// Overlay media remoting cast button size.
+static const int kMediaRemotingCastIconWidth = 44;
+static const int kMediaRemotingCastIconHeight = 36;
+
 // Alpha for disabled elements.
 static const float kDisabledAlpha = 0.4;
 
 static Image* PlatformResource(const char* name) {
   if (!g_media_control_image_map)
     g_media_control_image_map = new MediaControlImageMap();
   if (Image* image = g_media_control_image_map->at(name))
     return image;
   if (Image* image = Image::LoadPlatformResource(name).LeakRef()) {
     g_media_control_image_map->Set(name, image);
@@ skipping 140 matching lines @@
                                          const ComputedStyle& style,
                                          GraphicsContext& context,
                                          Color slider_background_color) {
   float border_radius = rect.Height() / 2;
   FloatSize radii(border_radius, border_radius);
 
   context.FillRoundedRect(FloatRoundedRect(rect, radii, radii, radii, radii),
                           slider_background_color);
 }
 
+bool MediaControlsPainter::PaintMediaRemotingCastIcon(
+    const LayoutObject& object,
+    const PaintInfo& paintInfo,
+    const IntRect& rect) {
+  const HTMLMediaElement* media_element = ToParentMediaElement(object);
+  if (!media_element)
+    return false;
+
+  static Image* cast_icon = PlatformResource("mediaremotingCast");
+
+  const int button_width = std::min(rect.Width(), kMediaRemotingCastIconWidth);

[liberato (no reviews please), 2017/04/12 21:57:44]

what size box do you see here?  from the css, it looks like it's just the icon
size.  in that case, you might just be able to call PaintMediaButton, and not
memorize the desired size in kMediaRemotingCastIcon*.

the overlay button is 100%, which is why it needs to do extra math.

[xjz, 2017/04/13 00:08:48]

Done.

+  const int button_height =
+      std::min(rect.Height(), kMediaRemotingCastIconHeight);
+
+  return PaintMediaButton(
+      paintInfo.context,
+      IntRect(rect.X() + (rect.Width() - button_width) / 2,
+              rect.Y() + (rect.Height() - button_height) / 2, button_width,
+              button_height),
+      cast_icon);
+}
+
 static void PaintSliderRangeHighlight(const IntRect& rect,
                                       const ComputedStyle& style,
                                       GraphicsContext& context,
                                       int start_position,
                                       int end_position,
                                       Color start_color,
                                       Color end_color) {
   // Calculate border radius; need to avoid being smaller than half the slider
   // height because of https://bugs.webkit.org/show_bug.cgi?id=30143.
   float border_radius = rect.Height() / 2.0f;
@@ skipping 380 matching lines @@
 void MediaControlsPainter::AdjustMediaSliderThumbSize(ComputedStyle& style) {
   const float zoom_level = style.EffectiveZoom();
 
   style.SetWidth(Length(
       static_cast<int>(kMediaSliderThumbTouchWidth * zoom_level), kFixed));
   style.SetHeight(Length(
       static_cast<int>(kMediaSliderThumbTouchHeight * zoom_level), kFixed));
 }
 
 }  // namespace blink