[TIMOB-24237] iOS: Expose backgroundSelectedColor (Parity)

apidoc/Titanium/UI/Button.yml

@@ -184,7 +184,16 @@ properties:
         state only. For iOS, since there is not a trackball, this does nothing.
     type: String
     platforms: [android, iphone, ipad, mobileweb]
-
+
+  - name: backgroundSelectedColor
+    summary: Selected background color of the view, as a color name or hex triplet.
+    description: |
+        For information about color values, see the "Colors" section of <Titanium.UI>.         
+    type: String
+    platforms: [iphone, ipad, android, mobileweb]
+    default: Background color of this view.
+    since: {iphone: "6.1.0", ipad: "6.1.0", android: 0.9.0, mobileweb: 1.8.0}
+
   - name: backgroundSelectedImage
     summary: |
         Background image for the button in its selected state, specified as a local file 

iphone/Classes/TiUIButton.m

@@ -167,9 +167,7 @@ -(UIButton*)button
 {
 	if (button==nil)
 	{
-        BOOL hasImage = [self.proxy valueForKey:@"backgroundImage"]!=nil;
-
-        UIButtonType defaultType = (hasImage==YES) ? UIButtonTypeCustom : UIButtonTypeRoundedRect;
+		UIButtonType defaultType = [self hasImageProperties] ? UIButtonTypeCustom : UIButtonTypeRoundedRect;
 		style = [TiUtils intValue:[self.proxy valueForKey:@"style"] def:defaultType];
 		UIView *btn = [TiButtonUtil buttonWithType:style];
 		button = (UIButton*)[btn retain];
@@ -190,6 +188,11 @@ -(UIButton*)button
 	return button;
 }
 
+- (BOOL)hasImageProperties
+{
+    return [self.proxy valueForKey:@"backgroundImage"] || [self.proxy valueForKey:@"backgroundSelectedImage"] || [self.proxy valueForKey:@"backgroundSelectedColor"];
+}
+
 - (id)accessibilityElement
 {
 	return [self button];
@@ -268,6 +271,11 @@ -(void)setBackgroundImage_:(id)value
 	[self updateBackgroundImage];
 }
 
+-(void)setBackgroundSelectedColor_:(id)value
+{
+    [[self button] setBackgroundImage:[TiUtils imageWithColor:[[TiUtils colorValue:value] _color]] forState:UIControlStateHighlighted];
+}
+
 -(void)setBackgroundSelectedImage_:(id)value
 {
 	[[self button] setBackgroundImage:[self loadImage:value] forState:UIControlStateHighlighted];

iphone/Classes/TiUtils.h

@@ -704,4 +704,10 @@ typedef enum
  */
 + (BOOL)livePhotoSupported;
 
+/**
+ Converts a color into an image.
+ @return The generated image.
+ */
++ (UIImage*)imageWithColor:(UIColor*)color;
+
 @end

iphone/Classes/TiUtils.m

@@ -2117,4 +2117,20 @@ +(BOOL)validatePencilWithTouch:(UITouch*)touch
     }
 }
 
+// Credits: http://stackoverflow.com/a/14525049/5537752
++ (UIImage*)imageWithColor:(UIColor*)color
+{
+    CGRect rect = CGRectMake(0.0f, 0.0f, 1.0f, 1.0f);
+    UIGraphicsBeginImageContext(rect.size);
+    CGContextRef context = UIGraphicsGetCurrentContext();
+
+    CGContextSetFillColorWithColor(context, [color CGColor]);
+    CGContextFillRect(context, rect);
+
+    UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
+    UIGraphicsEndImageContext();
+
+    return image;
+}
+
 @end