Use refs for GraphicsContext

third_party/WebKit/Source/platform/mac/ThemeMac.mm

 /*
  * Copyright (C) 2008, 2010, 2011, 2012 Apple 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.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 247 matching lines @@
     // Set the control size based off the rectangle we're painting into.
     setControlSize(checkboxCell, checkboxSizes(), zoomedRect.size(), zoomFactor);
 
     // Update the various states we respond to.
     updateStates(checkboxCell, states);
 
     return checkboxCell;
 }
 
 // FIXME: Share more code with radio buttons.
-static void paintCheckbox(ControlStates states, GraphicsContext* context, const IntRect& zoomedRect, float zoomFactor, ScrollableArea* scrollableArea)
+static void paintCheckbox(ControlStates states, GraphicsContext& context, const IntRect& zoomedRect, float zoomFactor, ScrollableArea* scrollableArea)
 {
     BEGIN_BLOCK_OBJC_EXCEPTIONS
 
     // Determine the width and height needed for the control and prepare the cell for painting.
     NSButtonCell *checkboxCell = checkbox(states, zoomedRect, zoomFactor);
-    GraphicsContextStateSaver stateSaver(*context);
+    GraphicsContextStateSaver stateSaver(context);
 
     NSControlSize controlSize = [checkboxCell controlSize];
     IntSize zoomedSize = checkboxSizes()[controlSize];
     zoomedSize.setWidth(zoomedSize.width() * zoomFactor);
     zoomedSize.setHeight(zoomedSize.height() * zoomFactor);
     IntRect inflatedRect = ThemeMac::inflateRect(zoomedRect, zoomedSize, checkboxMargins(controlSize), zoomFactor);
 
     if (zoomFactor != 1.0f) {
         inflatedRect.setWidth(inflatedRect.width() / zoomFactor);
         inflatedRect.setHeight(inflatedRect.height() / zoomFactor);
-        context->translate(inflatedRect.x(), inflatedRect.y());
-        context->scale(zoomFactor, zoomFactor);
-        context->translate(-inflatedRect.x(), -inflatedRect.y());
+        context.translate(inflatedRect.x(), inflatedRect.y());
+        context.scale(zoomFactor, zoomFactor);
+        context.translate(-inflatedRect.x(), -inflatedRect.y());
     }
 
     LocalCurrentGraphicsContext localContext(context, ThemeMac::inflateRectForFocusRing(inflatedRect));
     NSView* view = ensuredView(scrollableArea);
     [checkboxCell drawWithFrame:NSRect(inflatedRect) inView:view];
     if (!ThemeMac::drawWithFrameDrawsFocusRing() && states & FocusControlState)
         [checkboxCell cr_drawFocusRingWithFrame:NSRect(inflatedRect) inView:view];
     [checkboxCell setControlView:nil];
 
     END_BLOCK_OBJC_EXCEPTIONS
@@ skipping 42 matching lines @@
     setControlSize(radioCell, radioSizes(), zoomedRect.size(), zoomFactor);
 
     // Update the various states we respond to.
     // Cocoa draws NSMixedState NSRadioButton as NSOnState so we don't want that.
     states &= ~IndeterminateControlState;
     updateStates(radioCell, states);
 
     return radioCell;
 }
 
-static void paintRadio(ControlStates states, GraphicsContext* context, const IntRect& zoomedRect, float zoomFactor, ScrollableArea* scrollableArea)
+static void paintRadio(ControlStates states, GraphicsContext& context, const IntRect& zoomedRect, float zoomFactor, ScrollableArea* scrollableArea)
 {
     // Determine the width and height needed for the control and prepare the cell for painting.
     NSButtonCell *radioCell = radio(states, zoomedRect, zoomFactor);
-    GraphicsContextStateSaver stateSaver(*context);
+    GraphicsContextStateSaver stateSaver(context);
 
     NSControlSize controlSize = [radioCell controlSize];
     IntSize zoomedSize = radioSizes()[controlSize];
     zoomedSize.setWidth(zoomedSize.width() * zoomFactor);
     zoomedSize.setHeight(zoomedSize.height() * zoomFactor);
     IntRect inflatedRect = ThemeMac::inflateRect(zoomedRect, zoomedSize, radioMargins(controlSize), zoomFactor);
 
     if (zoomFactor != 1.0f) {
         inflatedRect.setWidth(inflatedRect.width() / zoomFactor);
         inflatedRect.setHeight(inflatedRect.height() / zoomFactor);
-        context->translate(inflatedRect.x(), inflatedRect.y());
-        context->scale(zoomFactor, zoomFactor);
-        context->translate(-inflatedRect.x(), -inflatedRect.y());
+        context.translate(inflatedRect.x(), inflatedRect.y());
+        context.scale(zoomFactor, zoomFactor);
+        context.translate(-inflatedRect.x(), -inflatedRect.y());
     }
 
     LocalCurrentGraphicsContext localContext(context, ThemeMac::inflateRectForFocusRing(inflatedRect));
     BEGIN_BLOCK_OBJC_EXCEPTIONS
     NSView* view = ensuredView(scrollableArea);
     [radioCell drawWithFrame:NSRect(inflatedRect) inView:view];
     if (!ThemeMac::drawWithFrameDrawsFocusRing() && states & FocusControlState)
         [radioCell cr_drawFocusRingWithFrame:NSRect(inflatedRect) inView:view];
     [radioCell setControlView:nil];
     END_BLOCK_OBJC_EXCEPTIONS
@@ skipping 41 matching lines @@
     static NSButtonCell *cell = nil;
     if (!cell) {
         cell = [[NSButtonCell alloc] init];
         [cell setTitle:nil];
         [cell setButtonType:NSMomentaryPushInButton];
     }
     setUpButtonCell(cell, part, states, zoomedRect, zoomFactor);
     return cell;
 }
 
-static void paintButton(ControlPart part, ControlStates states, GraphicsContext* context, const IntRect& zoomedRect, float zoomFactor, ScrollableArea* scrollableArea)
+static void paintButton(ControlPart part, ControlStates states, GraphicsContext& context, const IntRect& zoomedRect, float zoomFactor, ScrollableArea* scrollableArea)
 {
     BEGIN_BLOCK_OBJC_EXCEPTIONS
 
     // Determine the width and height needed for the control and prepare the cell for painting.
     NSButtonCell *buttonCell = button(part, states, zoomedRect, zoomFactor);
-    GraphicsContextStateSaver stateSaver(*context);
+    GraphicsContextStateSaver stateSaver(context);
 
     NSControlSize controlSize = [buttonCell controlSize];
     IntSize zoomedSize = buttonSizes()[controlSize];
     zoomedSize.setWidth(zoomedRect.width()); // Buttons don't ever constrain width, so the zoomed width can just be honored.
     zoomedSize.setHeight(zoomedSize.height() * zoomFactor);
     IntRect inflatedRect = zoomedRect;
     if ([buttonCell bezelStyle] == NSRoundedBezelStyle) {
         // Center the button within the available space.
         if (inflatedRect.height() > zoomedSize.height()) {
             inflatedRect.setY(inflatedRect.y() + (inflatedRect.height() - zoomedSize.height()) / 2);
             inflatedRect.setHeight(zoomedSize.height());
         }
 
         // Now inflate it to account for the shadow.
         inflatedRect = ThemeMac::inflateRect(inflatedRect, zoomedSize, buttonMargins(controlSize), zoomFactor);
 
         if (zoomFactor != 1.0f) {
             inflatedRect.setWidth(inflatedRect.width() / zoomFactor);
             inflatedRect.setHeight(inflatedRect.height() / zoomFactor);
-            context->translate(inflatedRect.x(), inflatedRect.y());
-            context->scale(zoomFactor, zoomFactor);
-            context->translate(-inflatedRect.x(), -inflatedRect.y());
+            context.translate(inflatedRect.x(), inflatedRect.y());
+            context.scale(zoomFactor, zoomFactor);
+            context.translate(-inflatedRect.x(), -inflatedRect.y());
         }
     }
 
     LocalCurrentGraphicsContext localContext(context, ThemeMac::inflateRectForFocusRing(inflatedRect));
     NSView* view = ensuredView(scrollableArea);
 
     [buttonCell drawWithFrame:NSRect(inflatedRect) inView:view];
     if (!ThemeMac::drawWithFrameDrawsFocusRing() && states & FocusControlState)
         [buttonCell cr_drawFocusRingWithFrame:NSRect(inflatedRect) inView:view];
     [buttonCell setControlView:nil];
@@ skipping 14 matching lines @@
 static NSControlSize stepperControlSizeForFont(const FontDescription& fontDescription)
 {
     int fontSize = fontDescription.computedPixelSize();
     if (fontSize >= 27)
         return NSRegularControlSize;
     if (fontSize >= 22)
         return NSSmallControlSize;
     return NSMiniControlSize;
 }
 
-static void paintStepper(ControlStates states, GraphicsContext* context, const IntRect& zoomedRect, float zoomFactor, ScrollableArea*)
+static void paintStepper(ControlStates states, GraphicsContext& context, const IntRect& zoomedRect, float zoomFactor, ScrollableArea*)
 {
     // We don't use NSStepperCell because there are no ways to draw an
     // NSStepperCell with the up button highlighted.
 
     HIThemeButtonDrawInfo drawInfo;
     drawInfo.version = 0;
     drawInfo.state = convertControlStatesToThemeDrawState(kThemeIncDecButton, states);
     drawInfo.adornment = kThemeAdornmentDefault;
     ControlSize controlSize = controlSizeFromPixelSize(stepperSizes(), zoomedRect.size(), zoomFactor);
     if (controlSize == NSSmallControlSize)
         drawInfo.kind = kThemeIncDecButtonSmall;
     else if (controlSize == NSMiniControlSize)
         drawInfo.kind = kThemeIncDecButtonMini;
     else
         drawInfo.kind = kThemeIncDecButton;
 
     IntRect rect(zoomedRect);
-    GraphicsContextStateSaver stateSaver(*context);
+    GraphicsContextStateSaver stateSaver(context);
     if (zoomFactor != 1.0f) {
         rect.setWidth(rect.width() / zoomFactor);
         rect.setHeight(rect.height() / zoomFactor);
-        context->translate(rect.x(), rect.y());
-        context->scale(zoomFactor, zoomFactor);
-        context->translate(-rect.x(), -rect.y());
+        context.translate(rect.x(), rect.y());
+        context.scale(zoomFactor, zoomFactor);
+        context.translate(-rect.x(), -rect.y());
     }
     CGRect bounds(rect);
     CGRect backgroundBounds;
     HIThemeGetButtonBackgroundBounds(&bounds, &drawInfo, &backgroundBounds);
     // Center the stepper rectangle in the specified area.
     backgroundBounds.origin.x = bounds.origin.x + (bounds.size.width - backgroundBounds.size.width) / 2;
     if (backgroundBounds.size.height < bounds.size.height) {
         int heightDiff = clampTo<int>(bounds.size.height - backgroundBounds.size.height);
         backgroundBounds.origin.y = bounds.origin.y + (heightDiff / 2) + 1;
     }
@@ skipping 141 matching lines @@
             zoomedSize.setWidth(zoomedSize.width() * zoomFactor);
             zoomedRect = inflateRect(zoomedRect, zoomedSize, stepperMargin, zoomFactor);
             break;
         }
         default:
             break;
     }
     END_BLOCK_OBJC_EXCEPTIONS
 }
 
-void ThemeMac::paint(ControlPart part, ControlStates states, GraphicsContext* context, const IntRect& zoomedRect, float zoomFactor, ScrollableArea* scrollableArea) const
+void ThemeMac::paint(ControlPart part, ControlStates states, GraphicsContext& context, const IntRect& zoomedRect, float zoomFactor, ScrollableArea* scrollableArea) const
 {
     switch (part) {
         case CheckboxPart:
             paintCheckbox(states, context, zoomedRect, zoomFactor, scrollableArea);
             break;
         case RadioPart:
             paintRadio(states, context, zoomedRect, zoomFactor, scrollableArea);
             break;
         case PushButtonPart:
         case ButtonPart:
@@ skipping 15 matching lines @@
 // focus ring with the frame.
     return IsOSLionOrEarlier();
 #else
 // If compiling an OSX 10.7 or older SDK, OSes up through 10.9 will draw a focus
 // ring with the frame.
     return IsOSMavericksOrEarlier();
 #endif
 }
 
 }