Implement input type=color UI

skia/ext/skia_utils_mac.mm

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "skia/ext/skia_utils_mac.h"
 
 #import <AppKit/AppKit.h>
 
 #include "base/logging.h"
 #include "base/mac/mac_util.h"
@@ skipping 168 matching lines @@
 }
 
 // Converts ARGB to CGColorRef.
 CGColorRef SkColorToCGColorRef(SkColor color) {
   return CGColorCreateGenericRGB(SkColorGetR(color) / 255.0,
                                  SkColorGetG(color) / 255.0,
                                  SkColorGetB(color) / 255.0,
                                  SkColorGetA(color) / 255.0);
 }
 
+// Converts NSColor to ARGB
+SkColor NSColorToSkColor(NSColor* color) {
+  CGFloat red, green, blue, alpha;

[Nico, 2012/02/21 19:40:17]

DCHECK([color colorSpace] == NSCalibratedRGBColorSpace || [color colorSpace] ==
NSDeviceRGBColorSpace)?

[keishi, 2012/02/24 14:38:54]

Done.

+  [color getRed:&red green:&green blue:&blue alpha:&alpha];

[Nico, 2012/02/21 19:40:17]

Are you sure you don't want to call this NSDeviceColorToSkColor() and make it
call `color = [color colorUsingColorSpace:NSDeviceRGBColorSpace] first?

[keishi, 2012/02/24 14:38:54]

OK. Done.

On 2012/02/21 19:40:17, Nico wrote:

+  return SkColorSetARGB(SkScalarRound(255.0 * alpha),
+                        SkScalarRound(255.0 * red),
+                        SkScalarRound(255.0 * green),
+                        SkScalarRound(255.0 * blue));
+}
+
 // Converts ARGB to NSColor.
 NSColor* SkColorToCalibratedNSColor(SkColor color) {
   return [NSColor colorWithCalibratedRed:SkColorGetR(color) / 255.0
                                    green:SkColorGetG(color) / 255.0
                                     blue:SkColorGetB(color) / 255.0
                                    alpha:SkColorGetA(color) / 255.0];
 }
 
+NSColor* SkColorToDeviceNSColor(SkColor color) {
+  return [NSColor colorWithDeviceRed:SkColorGetR(color) / 255.0
+                               green:SkColorGetG(color) / 255.0
+                                blue:SkColorGetB(color) / 255.0
+                               alpha:SkColorGetA(color) / 255.0];
+}
+
 SkBitmap CGImageToSkBitmap(CGImageRef image) {
   if (!image)
     return SkBitmap();
 
   int width = CGImageGetWidth(image);
   int height = CGImageGetHeight(image);
 
   scoped_ptr<SkDevice> device(
       skia::BitmapPlatformDevice::Create(NULL, width, height, false));
 
@@ skipping 149 matching lines @@
   // Apply content matrix.
   SkMatrix skMatrix = canvas_->getTotalMatrix();
   skMatrix.postTranslate(-SkIntToScalar(pt.fX), -SkIntToScalar(pt.fY));
   CGAffineTransform affine = SkMatrixToCGAffineTransform(skMatrix);
   CGContextConcatCTM(cgContext_, affine);
   
   return cgContext_;
 }
 
 }  // namespace gfx