Constify and use reference for RenderStyle in LayoutTheme

Source/core/rendering/RenderMediaControls.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 111 matching lines @@
     static Image* mediaOverlayPlay = platformResource("mediaplayerOverlayPlay");
     return paintMediaButton(paintInfo.context, rect, mediaOverlayPlay);
 }
 
 static Image* getMediaSliderThumb()
 {
     static Image* mediaSliderThumb = platformResource("mediaplayerSliderThumb");
     return mediaSliderThumb;
 }
 
-static void paintRoundedSliderBackground(const IntRect& rect, const RenderStyle* style, GraphicsContext* context)
+static void paintRoundedSliderBackground(const IntRect& rect, const RenderStyle&, GraphicsContext* context)
 {
     int borderRadius = rect.height() / 2;
     IntSize radii(borderRadius, borderRadius);
     Color sliderBackgroundColor = Color(11, 11, 11);
     context->fillRoundedRect(rect, radii, radii, radii, radii, sliderBackgroundColor);
 }
 
-static void paintSliderRangeHighlight(const IntRect& rect, const RenderStyle* style, GraphicsContext* context, int startPosition, int endPosition, Color startColor, Color endColor)
+static void paintSliderRangeHighlight(const IntRect& rect, const RenderStyle& style, GraphicsContext* context, int startPosition, int endPosition, Color startColor, Color endColor)
 {
     // Calculate border radius; need to avoid being smaller than half the slider height
     // because of https://bugs.webkit.org/show_bug.cgi?id=30143.
     int borderRadius = rect.height() / 2;
     IntSize radii(borderRadius, borderRadius);
 
     // Calculate highlight rectangle and edge dimensions.
     int startOffset = startPosition;
     int endOffset = rect.width() - endPosition;
     int rangeWidth = endPosition - startPosition;
@@ skipping 41 matching lines @@
 }
 
 const int mediaSliderThumbWidth = 32;
 
 static bool paintMediaSlider(RenderObject* object, const PaintInfo& paintInfo, const IntRect& rect)
 {
     HTMLMediaElement* mediaElement = toParentMediaElement(object);
     if (!mediaElement)
         return false;
 
-    RenderStyle* style = object->style();
+    const RenderStyle& style = object->styleRef();
     GraphicsContext* context = paintInfo.context;
 
     paintRoundedSliderBackground(rect, style, context);
 
     // Draw the buffered range. Since the element may have multiple buffered ranges and it'd be
     // distracting/'busy' to show all of them, show only the buffered range containing the current play head.
     RefPtrWillBeRawPtr<TimeRanges> bufferedTimeRanges = mediaElement->buffered();
     float duration = mediaElement->duration();
     float currentTime = mediaElement->currentTime();
     if (std::isnan(duration) || std::isinf(duration) || !duration || std::isnan(currentTime))
@@ skipping 50 matching lines @@
 
 const int mediaVolumeSliderThumbWidth = 24;
 
 static bool paintMediaVolumeSlider(RenderObject* object, const PaintInfo& paintInfo, const IntRect& rect)
 {
     HTMLMediaElement* mediaElement = toParentMediaElement(object);
     if (!mediaElement)
         return false;
 
     GraphicsContext* context = paintInfo.context;
-    RenderStyle* style = object->style();
+    const RenderStyle& style = object->styleRef();
 
     paintRoundedSliderBackground(rect, style, context);
 
     // Calculate volume position for white background rectangle.
     float volume = mediaElement->volume();
     if (std::isnan(volume) || volume < 0)
         return true;
     if (volume > 1)
         volume = 1;
     if (!hasSource(mediaElement) || !mediaElement->hasAudio() || mediaElement->muted())
         volume = 0;
 
     // Calculate the position relative to the center of the thumb.
     float fillWidth = 0;
     if (volume > 0) {
         float thumbCenter = mediaVolumeSliderThumbWidth / 2;
-        float zoomLevel = style->effectiveZoom();
+        float zoomLevel = style.effectiveZoom();
         float positionWidth = volume * (rect.width() - (zoomLevel * thumbCenter));
         fillWidth = positionWidth + (zoomLevel * thumbCenter / 2);
     }
 
     Color startColor = Color(195, 195, 195);
     Color endColor = Color(217, 217, 217);
 
     paintSliderRangeHighlight(rect, style, context, 0.0, fillWidth, startColor, endColor);
 
     return true;
@@ skipping 107 matching lines @@
     case MediaFullScreenVolumeSliderThumb:
         ASSERT_NOT_REACHED();
         break;
     }
     return false;
 }
 
 const int mediaSliderThumbHeight = 24;
 const int mediaVolumeSliderThumbHeight = 24;
 
-void RenderMediaControls::adjustMediaSliderThumbSize(RenderStyle* style)
+void RenderMediaControls::adjustMediaSliderThumbSize(RenderStyle& style)
 {
     static Image* mediaSliderThumb = platformResource("mediaplayerSliderThumb");
     static Image* mediaVolumeSliderThumb = platformResource("mediaplayerVolumeSliderThumb");
     int width = 0;
     int height = 0;
 
     Image* thumbImage = 0;
-    if (style->appearance() == MediaSliderThumbPart) {
+    if (style.appearance() == MediaSliderThumbPart) {
         thumbImage = mediaSliderThumb;
         width = mediaSliderThumbWidth;
         height = mediaSliderThumbHeight;
-    } else if (style->appearance() == MediaVolumeSliderThumbPart) {
+    } else if (style.appearance() == MediaVolumeSliderThumbPart) {
         thumbImage = mediaVolumeSliderThumb;
         width = mediaVolumeSliderThumbWidth;
         height = mediaVolumeSliderThumbHeight;
     }
 
-    float zoomLevel = style->effectiveZoom();
+    float zoomLevel = style.effectiveZoom();
     if (thumbImage) {
-        style->setWidth(Length(static_cast<int>(width * zoomLevel), Fixed));
-        style->setHeight(Length(static_cast<int>(height * zoomLevel), Fixed));
+        style.setWidth(Length(static_cast<int>(width * zoomLevel), Fixed));
+        style.setHeight(Length(static_cast<int>(height * zoomLevel), Fixed));
     }
 }
 
 static String formatChromiumMediaControlsTime(float time, float duration)
 {
     if (!std::isfinite(time))
         time = 0;
     if (!std::isfinite(duration))
         duration = 0;
     int seconds = static_cast<int>(fabsf(time));
@@ skipping 18 matching lines @@
 {
     return formatChromiumMediaControlsTime(time, time);
 }
 
 String RenderMediaControls::formatMediaControlsCurrentTime(float currentTime, float duration)
 {
     return formatChromiumMediaControlsTime(currentTime, duration);
 }
 
 } // namespace blink