Draw the caps lock indicator manually, rather than using WKDrawCapsLockIndicator.

Source/core/rendering/RenderThemeChromiumMac.mm

 /*
  * Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2009 Google, Inc.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 30 matching lines @@
 #import "core/platform/SharedBuffer.h"
 #import "core/platform/graphics/BitmapImage.h"
 #import "core/platform/graphics/Image.h"
 #import "core/platform/graphics/ImageBuffer.h"
 #import "core/platform/graphics/StringTruncator.h"
 #import "core/platform/graphics/cg/GraphicsContextCG.h"
 #import "core/platform/graphics/mac/ColorMac.h"
 #import "core/platform/mac/LocalCurrentGraphicsContext.h"
 #import "core/platform/mac/ThemeMac.h"
 #import "core/platform/mac/WebCoreNSCellExtras.h"
-#import "core/platform/mac/WebCoreSystemInterface.h"
 #import "core/rendering/PaintInfo.h"
 #import "core/rendering/RenderLayer.h"
 #import "core/rendering/RenderMedia.h"
 #import "core/rendering/RenderMediaControls.h"
 #import "core/rendering/RenderMediaControlsChromium.h"
 #import "core/rendering/RenderMeter.h"
 #import "core/rendering/RenderProgress.h"
 #import "core/rendering/RenderSlider.h"
 #import "core/rendering/RenderView.h"
 
@@ skipping 703 matching lines @@
 void RenderThemeChromiumMac::adjustTextFieldStyle(StyleResolver*, RenderStyle*, Element*) const
 {
 }
 
 bool RenderThemeChromiumMac::paintCapsLockIndicator(RenderObject*, const PaintInfo& paintInfo, const IntRect& r)
 {
     if (paintInfo.context->paintingDisabled())
         return true;
 
     LocalCurrentGraphicsContext localContext(paintInfo.context);
-    WKDrawCapsLockIndicator(localContext.cgContext(), r);
+

[Nico, 2013/05/02 20:57:13]

Can you add a comment like

// Matches the appearance of what SPI WKDrawCapsLockIndicator() would draw.

?

[Robert Sesek, 2013/05/02 21:07:25]

Done.

+    CGContextRef c = localContext.cgContext();
+    CGContextSaveGState(c);

[Nico, 2013/05/02 20:57:13]

.cgContext() returns a fresh context, so you probably don't need to save /
restore state

[Robert Sesek, 2013/05/02 21:07:25]

Done.

+    CGMutablePathRef shape = CGPathCreateMutable();
+
+    // To draw the caps lock indicator, draw the shape into a small
+    // square that is then scaled to the size of r.
+    const CGFloat kSquareSize = 17;
+
+    // Create a rounted square shape.
+    CGPathMoveToPoint(shape, NULL, 16.5, 4.5);
+    CGPathAddArc(shape, NULL, 12.5, 12.5, 4, 0,        M_PI_2,   false);
+    CGPathAddArc(shape, NULL, 4.5,  12.5, 4, M_PI_2,   M_PI,     false);
+    CGPathAddArc(shape, NULL, 4.5,  4.5,  4, M_PI,     3*M_PI/2, false);
+    CGPathAddArc(shape, NULL, 12.5, 4.5,  4, 3*M_PI/2, 0,        false);
+
+    // Draw the arrow - note this is drawing in a flipped coordinate system, so the
+    // arrow is pointing down.
+    CGPathMoveToPoint(shape, NULL, 8.5, 2);  // Tip point.
+    CGPathAddLineToPoint(shape, NULL, 4,     7);
+    CGPathAddLineToPoint(shape, NULL, 6.25,  7);
+    CGPathAddLineToPoint(shape, NULL, 6.25,  10.25);
+    CGPathAddLineToPoint(shape, NULL, 10.75, 10.25);
+    CGPathAddLineToPoint(shape, NULL, 10.75, 7);
+    CGPathAddLineToPoint(shape, NULL, 13,    7);
+    CGPathAddLineToPoint(shape, NULL, 8.5,   2);
+
+    // Draw the rectangle that underneath (or above in the flipped system) the arrow.
+    CGPathAddLineToPoint(shape, NULL, 10.75, 12);
+    CGPathAddLineToPoint(shape, NULL, 6.25,  12);
+    CGPathAddLineToPoint(shape, NULL, 6.25,  14.25);
+    CGPathAddLineToPoint(shape, NULL, 10.75, 14.25);
+    CGPathAddLineToPoint(shape, NULL, 10.75, 12);
+
+    // Scale and translate the shape.
+    CGRect cgr = r;
+    CGFloat maxX = CGRectGetMaxX(cgr);
+    CGFloat minY = CGRectGetMinY(cgr);
+    CGFloat heightScale = r.height() / kSquareSize;
+    CGAffineTransform transform = CGAffineTransformMake(
+        heightScale, 0,  // A  B
+        0, heightScale,  // C  D
+        maxX - r.height(), minY);  // Tx Ty
+
+    CGMutablePathRef paintPath = CGPathCreateMutable();
+    CGPathAddPath(paintPath, &transform, shape);
+    CGPathRelease(shape);
+
+    CGContextSetRGBFillColor(c, 0, 0, 0, 0.4);
+    CGContextBeginPath(c);
+    CGContextAddPath(c, paintPath);
+    CGContextFillPath(c);
+    CGPathRelease(paintPath);
+
+    CGContextRestoreGState(c);
 
     return false;
 }
 
 bool RenderThemeChromiumMac::paintTextArea(RenderObject* o, const PaintInfo& paintInfo, const IntRect& r)
 {
     LocalCurrentGraphicsContext localContext(paintInfo.context);
     _NSDrawCarbonThemeListBox(r, isEnabled(o) && !isReadOnlyControl(o), YES, YES);
     return false;
 }
@@ skipping 1190 matching lines @@
 {
     return RenderMediaControlsChromium::paintMediaControlsPart(MediaEnterFullscreenButton, object, paintInfo, rect);
 }
 
 bool RenderThemeChromiumMac::paintMediaToggleClosedCaptionsButton(RenderObject* object, const PaintInfo& paintInfo, const IntRect& rect)
 {
     return RenderMediaControlsChromium::paintMediaControlsPart(MediaShowClosedCaptionsButton, object, paintInfo, rect);
 }
 
 } // namespace WebCore