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//
// TestView.m
// LayoutImageInText
//
// Created by Haoxiang on 6/14/11.
// Copyright 2011 DEV. All rights reserved.
//
#import "TestView.h"
#import "NSString+Extern.h"
#import <CoreText/CoreText.h>
#define kFixedWidthSpace @" "
@implementation TestView
@synthesize image;
@synthesize text;
- (id)initWithFrame:(CGRect)frame {
self = [super initWithFrame:frame];
if (self) {
self.text = @"";
self.image = [UIImage imageNamed:@"test.jpg"];
self.backgroundColor = [[UIColor blackColor] colorWithAlphaComponent:0.2f];
}
return self;
}
- (void)drawRect:(CGRect)rect {
[[UIColor whiteColor] set];
[[UIBezierPath bezierPathWithRect:[self bounds]] fill];
CGContextRef context = UIGraphicsGetCurrentContext();
NSString *textStr = self.text;
CGContextSetTextMatrix(context, CGAffineTransformIdentity);
CTFontRef font = CTFontCreateWithName(CFSTR("Times"), 12, NULL);
CFStringRef keys[] = { kCTFontAttributeName };
CFTypeRef values[] = { font };
CFDictionaryRef attr = CFDictionaryCreate(NULL, (const void **)&keys, (const void **)&values,
sizeof(keys) / sizeof(keys[0]), &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks);
CFStringRef string = CFStringCreateWithCString(NULL, [textStr cStringUsingEncoding:NSUTF8StringEncoding], kCFStringEncodingUTF8);
CFAttributedStringRef attrString = CFAttributedStringCreate(NULL, string, attr);
CFRelease(attr);
CTFramesetterRef framesetter = CTFramesetterCreateWithAttributedString(attrString);
float hPadding = 15.0f;
CGPoint ctrPoint = CGPointMake(CGRectGetMidX(rect), CGRectGetMidY(rect));
CGAffineTransform pathTransform = CGAffineTransformMakeTranslation(ctrPoint.x, ctrPoint.y);
pathTransform = CGAffineTransformRotate(pathTransform, M_PI);
pathTransform = CGAffineTransformTranslate(pathTransform, -ctrPoint.x, -ctrPoint.y);
pathTransform = CGAffineTransformTranslate(CGAffineTransformScale(CGAffineTransformTranslate(pathTransform, ctrPoint.x, 0), -1.0f, 1.0f), -ctrPoint.x, 0.0f);
CGSize imageSize = CGSizeMake(60, 80);
CGRect imageRect = CGRectMake(rect.size.width - hPadding - imageSize.width, hPadding,
imageSize.width, imageSize.height);
CGMutablePathRef imagePath = CGPathCreateMutable();
CGPathAddRect(imagePath, &pathTransform, imageRect);
CGContextDrawImage(context, CGPathGetPathBoundingBox(imagePath), self.image.CGImage);
CGPathRelease(imagePath);
CGMutablePathRef path = CGPathCreateMutable();
CGPathMoveToPoint(path, &pathTransform, hPadding, hPadding);
CGPathAddLineToPoint(path, &pathTransform, CGRectGetMinX(imageRect), hPadding);
CGPathAddLineToPoint(path, &pathTransform, CGRectGetMinX(imageRect), CGRectGetMaxY(imageRect));
CGPathAddLineToPoint(path, &pathTransform, CGRectGetMaxX(imageRect), CGRectGetMaxY(imageRect));
CGPathAddLineToPoint(path, &pathTransform, CGRectGetMaxX(imageRect), CGRectGetMaxY(rect) - hPadding);
CGPathAddLineToPoint(path, &pathTransform, hPadding, CGRectGetMaxY(rect) - hPadding);
CGPathAddLineToPoint(path, &pathTransform, hPadding, hPadding);
CTFrameRef frame = CTFramesetterCreateFrame(framesetter, CFRangeMake(0, 0), path, NULL);
CTFrameDraw(frame, context);
CGPathRelease(path);
CFRelease(frame);
CFRelease(framesetter);
}
- (void)dealloc {
[text release];
[image release];
[super dealloc];
}
@end