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PrettyDrawing.m
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PrettyDrawing.m
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//
// Drawing.m
// PrettyExample
//
// Created by Víctor on 01/03/12.
// Copyright (c) 2012 Victor Pena Placer (@vicpenap)
// http://www.victorpena.es/
//
//
// Permission is hereby granted, free of charge, to any person obtaining a copy of
// this software and associated documentation files (the "Software"), to deal in
// the Software without restriction, including without limitation the rights to
// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
// the Software, and to permit persons to whom the Software is furnished to do so,
// subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
#import "PrettyDrawing.h"
#import <QuartzCore/QuartzCore.h>
@implementation PrettyDrawing
+ (void) drawGradient:(CGRect)rect fromColor:(UIColor *)from toColor:(UIColor *)to {
CGContextRef ctx = UIGraphicsGetCurrentContext();
CGContextSaveGState(ctx);
CGContextAddRect(ctx, rect);
CGContextClip(ctx);
CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB();
CGFloat locations[] = { 0.0, 1.0 };
CGColorRef startColor = from.CGColor;
CGColorRef endColor = to.CGColor;
NSArray *colors = [NSArray arrayWithObjects:(id)startColor, (id)endColor, nil];
CGGradientRef gradient = CGGradientCreateWithColors(colorSpace,
(CFArrayRef) colors, locations);
CGPoint startPoint = CGPointMake(CGRectGetMidX(rect), CGRectGetMinY(rect));
CGPoint endPoint = CGPointMake(CGRectGetMidX(rect), CGRectGetMaxY(rect));
CGContextDrawLinearGradient(ctx, gradient, startPoint, endPoint, 0);
CGGradientRelease(gradient);
CGColorSpaceRelease(colorSpace);
CGContextRestoreGState(ctx);
}
+ (void) drawLineAtPosition:(LinePosition)position rect:(CGRect)rect color:(UIColor *)color {
CGContextRef ctx = UIGraphicsGetCurrentContext();
CGContextSaveGState(ctx);
float y = 0;
switch (position) {
case LinePositionTop:
y = CGRectGetMinY(rect) + 0.5;
break;
case LinePositionBottom:
y = CGRectGetMaxY(rect) - 0.5;
default:
break;
}
CGContextMoveToPoint(ctx, CGRectGetMinX(rect), y);
CGContextAddLineToPoint(ctx, CGRectGetMaxX(rect), y);
CGContextSetStrokeColorWithColor(ctx, color.CGColor);
CGContextSetLineWidth(ctx, 1.5);
CGContextStrokePath(ctx);
CGContextRestoreGState(ctx);
}
+ (void) drawLineAtHeight:(float)height rect:(CGRect)rect color:(UIColor *)color width:(float)width {
CGContextRef ctx = UIGraphicsGetCurrentContext();
CGContextSaveGState(ctx);
float y = height;
CGContextMoveToPoint(ctx, CGRectGetMinX(rect), y);
CGContextAddLineToPoint(ctx, CGRectGetMaxX(rect), y);
CGContextSetStrokeColorWithColor(ctx, color.CGColor);
CGContextSetLineWidth(ctx, width);
CGContextStrokePath(ctx);
CGContextRestoreGState(ctx);
}
+ (void) drawGradient:(CGGradientRef)gradient rect:(CGRect)rect
{
CGContextRef ctx = UIGraphicsGetCurrentContext();
CGContextSaveGState(ctx);
CGPoint startPoint = CGPointMake(CGRectGetMidX(rect), CGRectGetMinY(rect));
CGPoint endPoint = CGPointMake(CGRectGetMidX(rect), CGRectGetMaxY(rect));
CGContextDrawLinearGradient(ctx, gradient, startPoint, endPoint, 0);
CGContextRestoreGState(ctx);
}
@end
@implementation UIView (PrettyKit)
- (void) dropShadowWithOpacity:(float)opacity {
self.layer.masksToBounds = NO;
self.layer.shadowOffset = CGSizeMake(0, 0);
self.layer.shadowOpacity = opacity;
self.layer.shadowPath = [UIBezierPath bezierPathWithRect:self.bounds].CGPath;
}
@end
@implementation UIColor (PrettyKit)
// http://stackoverflow.com/questions/1560081/how-can-i-create-a-uicolor-from-a-hex-string
+ (UIColor *) colorWithHex:(int)hex {
return [UIColor colorWithRed:((float)((hex & 0xFF0000) >> 16))/255.0
green:((float)((hex & 0xFF00) >> 8))/255.0
blue:((float)(hex & 0xFF))/255.0 alpha:1.0];
}
@end