Build ChatListUI

submodules/LegacyComponents/Sources/POPCGUtils.mm

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+/**
+ Copyright (c) 2014-present, Facebook, Inc.
+ All rights reserved.
+ 
+ This source code is licensed under the BSD-style license found in the
+ LICENSE file in the root directory of this source tree. An additional grant
+ of patent rights can be found in the PATENTS file in the same directory.
+ */
+
+#import "POPCGUtils.h"
+
+#if TARGET_OS_IPHONE
+#import <UIKit/UIColor.h>
+#else
+#import <AppKit/NSColor.h>
+#endif
+
+void POPCGColorGetRGBAComponents(CGColorRef color, CGFloat components[])
+{
+  if (!color) {
+#if TARGET_OS_IPHONE
+    color = [UIColor clearColor].CGColor;
+#else
+    color = [NSColor clearColor].CGColor;
+#endif
+  }
+  
+  const CGFloat *colors = CGColorGetComponents(color);
+  size_t count = CGColorGetNumberOfComponents(color);
+  
+  if (4 == count) {
+    // RGB colorspace
+    components[0] = colors[0];
+    components[1] = colors[1];
+    components[2] = colors[2];
+    components[3] = colors[3];
+  } else if (2 == count) {
+    // Grey colorspace
+    components[0] = components[1] = components[2] = colors[0];
+    components[3] = colors[1];
+  } else {
+    // Use CI to convert
+    CIColor *ciColor = [CIColor colorWithCGColor:color];
+    components[0] = ciColor.red;
+    components[1] = ciColor.green;
+    components[2] = ciColor.blue;
+    components[3] = ciColor.alpha;
+  }
+}
+
+CGColorRef POPCGColorRGBACreate(const CGFloat components[])
+{
+#if TARGET_OS_IPHONE
+  CGColorSpaceRef space = CGColorSpaceCreateDeviceRGB();
+  CGColorRef color = CGColorCreate(space, components);
+  CGColorSpaceRelease(space);
+  return color;
+#else
+  return CGColorCreateGenericRGB(components[0], components[1], components[2], components[3]);
+#endif
+}
+
+CGColorRef POPCGColorWithColor(id color)
+{
+  if (CFGetTypeID((__bridge CFTypeRef)color) == CGColorGetTypeID()) {
+    return ((__bridge CGColorRef)color);
+  }
+#if TARGET_OS_IPHONE
+  else if ([color isKindOfClass:[UIColor class]]) {
+    return [color CGColor];
+  }
+#else
+  else if ([color isKindOfClass:[NSColor class]]) {
+    return [color CGColor];
+  }
+#endif
+  return nil;
+}
+
+#if TARGET_OS_IPHONE
+
+void POPUIColorGetRGBAComponents(UIColor *color, CGFloat components[])
+{
+  return POPCGColorGetRGBAComponents(color.CGColor, components);
+}
+
+UIColor *POPUIColorRGBACreate(const CGFloat components[])
+{
+  CGColorRef colorRef = POPCGColorRGBACreate(components);
+  UIColor *color = [[UIColor alloc] initWithCGColor:colorRef];
+  CGColorRelease(colorRef);
+  return color;
+}
+
+#endif
+