Class: EasyButton

Inherits:
UIButton
  • Object
show all
Defined in:
lib/easy-button/easy-button.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#backgroundColor=(value) ⇒ Object (writeonly)

Sets the attribute backgroundColor

Parameters:

  • value —

    the value to set the attribute backgroundColor to.



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# File 'lib/easy-button/easy-button.rb', line 2

def backgroundColor=(value)
  @backgroundColor = value
end

#borderRadius ⇒ Object

Returns the value of attribute borderRadius.



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# File 'lib/easy-button/easy-button.rb', line 3

def borderRadius
  @borderRadius
end

#font ⇒ Object

Returns the value of attribute font.



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# File 'lib/easy-button/easy-button.rb', line 3

def font
  @font
end

#textColor ⇒ Object

Returns the value of attribute textColor.



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# File 'lib/easy-button/easy-button.rb', line 3

def textColor
  @textColor
end

#title ⇒ Object

Returns the value of attribute title.



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# File 'lib/easy-button/easy-button.rb', line 3

def title
  @title
end

#titleLabel ⇒ Object (readonly)

Returns the value of attribute titleLabel.



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# File 'lib/easy-button/easy-button.rb', line 4

def titleLabel
  @titleLabel
end

Instance Method Details

#buttonSetup ⇒ Object 



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# File 'lib/easy-button/easy-button.rb', line 20

def buttonSetup
  # Custom Title Label
  self.setTitleColor(UIColor.clearColor, forState:UIControlStateNormal)
  @titleLabel = UILabel.alloc.initWithFrame(self.bounds)
  @titleLabel.backgroundColor = UIColor.clearColor
  @titleLabel.shadowColor = UIColor.colorWithWhite(0, alpha:0.5);
  @titleLabel.shadowOffset = [0, -1]
  @titleLabel.textAlignment = UITextAlignmentCenter
  self.addSubview(@titleLabel)
  
  self.opaque = false
  self.backgroundColor = UIColor.clearColor
  self.backgroundColor = "#ff0000"
  self.borderRadius = 10
  self.font = UIFont.boldSystemFontOfSize(18)
  self.textColor = '#fff'
end

#createRoundedRectForRect(rect, radius) ⇒ Object 



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# File 'lib/easy-button/easy-button.rb', line 172

def createRoundedRectForRect(rect, radius)
  path = CGPathCreateMutable()
  CGPathMoveToPoint(path, nil, CGRectGetMidX(rect), CGRectGetMinY(rect))
  CGPathAddArcToPoint(path, nil, CGRectGetMaxX(rect), CGRectGetMinY(rect), CGRectGetMaxX(rect), CGRectGetMaxY(rect), radius)
  CGPathAddArcToPoint(path, nil, CGRectGetMaxX(rect), CGRectGetMaxY(rect), CGRectGetMinX(rect), CGRectGetMaxY(rect), radius)
  CGPathAddArcToPoint(path, nil, CGRectGetMinX(rect), CGRectGetMaxY(rect), CGRectGetMinX(rect), CGRectGetMinY(rect), radius)
  CGPathAddArcToPoint(path, nil, CGRectGetMinX(rect), CGRectGetMinY(rect), CGRectGetMaxX(rect), CGRectGetMinY(rect), radius)
  CGPathCloseSubpath(path)    
  path
end

#drawLinearGradient(context, rect, start_color, end_color) ⇒ Object 



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# File 'lib/easy-button/easy-button.rb', line 153

def drawLinearGradient(context, rect, start_color, end_color)
  color_space = CGColorSpaceCreateDeviceRGB()
  locations = Pointer.new(:float, 2)
  locations[1]  = 1.0
  
  colors = [start_color, end_color]
  
  gradient = CGGradientCreateWithColors(color_space, colors, locations)
  
  start_point = CGPointMake(CGRectGetMidX(rect), CGRectGetMinY(rect))
  end_point = CGPointMake(CGRectGetMidX(rect), CGRectGetMaxY(rect))
  
  CGContextSaveGState(context)
  CGContextAddRect(context, rect)
  CGContextClip(context)
  CGContextDrawLinearGradient(context, gradient, start_point, end_point, 0)
  CGContextRestoreGState(context)    
end

#drawRect(rect) ⇒ Object 



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# File 'lib/easy-button/easy-button.rb', line 86

def drawRect(rect)
  super
  context = UIGraphicsGetCurrentContext()
  
  if self.state == UIControlStateHighlighted && @backGroundColorRed && @backGroundColorGreen && @backGroundColorBlue
    backgroundColorTop = UIColor.colorWithRed(@backGroundColorRed * 0.8, green:@backGroundColorGreen * 0.8, blue:@backGroundColorBlue * 0.8, alpha:1).CGColor
  else
    backgroundColorTop = @backgroundColorTop.CGColor
  end
  backgroundColorBottom = @backgroundColorBottom.CGColor
  
  outerMargin = 5
  outerRect = CGRectInset(self.bounds, outerMargin, outerMargin)
  outerPath = createRoundedRectForRect(outerRect, @borderRadius)
  
  highlightRect = CGRectInset(outerRect, 2, 3)
  highlightPath = createRoundedRectForRect(highlightRect, @borderRadius - 1)
  
  # Draw Shadow When Not Pressed
  unless self.state == UIControlStateHighlighted
    CGContextSaveGState(context)
    CGContextSetFillColorWithColor(context, backgroundColorTop)
    CGContextSetShadowWithColor(context, CGSizeMake(0, 2), 3, UIColor.colorWithWhite(0, alpha:0.5).CGColor)
    CGContextAddPath(context, outerPath)
    CGContextFillPath(context)
    CGContextRestoreGState(context)
  end
  
  # Draw Button Gradient
  CGContextSaveGState(context)
  CGContextAddPath(context, outerPath)
  CGContextClip(context)
  drawLinearGradient(context, outerRect, backgroundColorTop, backgroundColorBottom)
  CGContextRestoreGState(context)
  
  # Draw Highlight or Inner Shadow
  CGContextSaveGState(context)
  if self.state == UIControlStateHighlighted
    CGContextSetLineWidth(context, 4)
    CGContextAddPath(context, outerPath)
    CGContextAddPath(context, highlightPath)
    CGContextEOClip(context)
    drawLinearGradient(context, outerRect, UIColor.colorWithWhite(0, alpha:0.12).CGColor, UIColor.colorWithWhite(0, alpha:0.03).CGColor)
  else
    CGContextSetLineWidth(context, 4)
    CGContextAddPath(context, outerPath)
    CGContextAddPath(context, highlightPath)
    CGContextEOClip(context)
    drawLinearGradient(context, outerRect, UIColor.colorWithWhite(1, alpha:0.2).CGColor, UIColor.colorWithWhite(1, alpha:0.02).CGColor)
  end
  CGContextRestoreGState(context)
  
  # Draw Button Border
  CGContextSaveGState(context)
  CGContextSetLineWidth(context, 1)
  CGContextSetStrokeColorWithColor(context, UIColor.colorWithWhite(0, alpha:0.3).CGColor)
  CGContextAddPath(context, outerPath)
  CGContextStrokePath(context)
  CGContextRestoreGState(context)
  
  # Move Title Label Down When Pressed
  @titleLabel.transform = CGAffineTransformIdentity
  if self.state == UIControlStateHighlighted
    @titleLabel.transform = CGAffineTransformMakeTranslation(0, 1)
  end
end

#hesitateUpdate ⇒ Object 



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# File 'lib/easy-button/easy-button.rb', line 195

def hesitateUpdate
  self.setNeedsDisplay
end

#initWithCoder(a_decoder) ⇒ Object 



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# File 'lib/easy-button/easy-button.rb', line 13

def initWithCoder(a_decoder)
  if super
    buttonSetup
  end
  self
end

#initWithFrame(frame) ⇒ Object 



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# File 'lib/easy-button/easy-button.rb', line 6

def initWithFrame(frame)
  if super
    buttonSetup
  end
  self
end

#rgbFromHex(hex) ⇒ Object 



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# File 'lib/easy-button/easy-button.rb', line 183

def rgbFromHex(hex)
  hex = hex.gsub(%r{[#;]}, '')
  case hex.size
  when 3
    hex.scan(%r{[0-9A-Fa-f]}).map { |el| (1.0 * (el * 2).to_i(16)) / 255 }
  when 6
    hex.scan(%r<[0-9A-Fa-f]{2}>).map { |el| (1.0 * el.to_i(16)) / 255 }
  else
    raise ArgumentError, 'Argument is not a valid hex code.'
  end
end

#touchesBegan(touches, withEvent: the_event) ⇒ Object 



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# File 'lib/easy-button/easy-button.rb', line 199

def touchesBegan(touches, withEvent:the_event)
  super
  self.setNeedsDisplay
end

#touchesCancelled(touches, withEvent: the_event) ⇒ Object 



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# File 'lib/easy-button/easy-button.rb', line 209

def touchesCancelled(touches, withEvent:the_event)
  super
  self.setNeedsDisplay
  self.performSelector(:hesitateUpdate, withObject:nil, afterDelay:0.1)
end

#touchesEnded(touches, withEvent: the_event) ⇒ Object 



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# File 'lib/easy-button/easy-button.rb', line 215

def touchesEnded(touches, withEvent:the_event)
  super
  self.setNeedsDisplay
  self.performSelector(:hesitateUpdate, withObject:nil, afterDelay:0.1)
end

#touchesMoved(touches, withEvent: the_event) ⇒ Object 



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# File 'lib/easy-button/easy-button.rb', line 204

def touchesMoved(touches, withEvent:the_event)
  super
  self.setNeedsDisplay
end