zxing/iphone/ZXingWidget/ParsedResult.m

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//
// ParsedResult.m
// ZXing
//
// Created by Christian Brunschen on 22/05/2008.
/*
* Copyright 2008 ZXing authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#import "ParsedResult.h"
#import "TextParsedResult.h"
#import "TelParsedResult.h"
#import "EmailParsedResult.h"
#import "BusinessCardParsedResult.h"
#import "URIParsedResult.h"
#import "GeoParsedResult.h"
#import "UIKit/UIStringDrawing.h"
#import <math.h>
@implementation ParsedResult
static NSMutableDictionary *iconsByClass = nil;
+ (NSString *)typeName {
return NSStringFromClass(self);
}
- (NSString *)stringForDisplay {
return @"{none}";
}
#define ICON_SIZE 40
#define ICON_INSIDE 36
+ (UIImage *)icon {
if (iconsByClass == nil) {
iconsByClass = [[NSMutableDictionary alloc] initWithCapacity:16];
}
UIImage *icon = [iconsByClass objectForKey:[self class]];
if (icon == nil) {
UIGraphicsBeginImageContext(CGSizeMake(ICON_SIZE, ICON_SIZE));
CGContextRef ctx = UIGraphicsGetCurrentContext();
[[UIColor lightGrayColor] set];
UIRectFill(CGRectMake(0, 0, ICON_SIZE, ICON_SIZE));
[[UIColor blackColor] set];
NSString *s = [[self class] typeName];
UIFont *font = [UIFont systemFontOfSize:16];
CGSize stringSize = [s sizeWithFont:font];
float xScale = fminf(1.0, ICON_INSIDE / stringSize.width);
float yScale = fminf(1.0, ICON_INSIDE / stringSize.height);
CGContextTranslateCTM(ctx, (ICON_SIZE / 2), (ICON_SIZE / 2));
CGContextRotateCTM(ctx, -M_PI / 6.0);
CGContextScaleCTM(ctx, xScale, yScale);
CGContextTranslateCTM(ctx,
-(stringSize.width)/2.0,
-(stringSize.height)/2.0);
[s drawAtPoint:CGPointMake(0, 0) withFont:font];
icon = [UIGraphicsGetImageFromCurrentImageContext() retain];
[iconsByClass setObject:icon forKey:[self class]];
UIGraphicsEndImageContext();
}
return icon;
}
- (UIImage *)icon {
return [[self class] icon];
}
- (NSArray *)actions {
if (!actions) {
actions = [[NSMutableArray alloc] init];
[self populateActions];
}
return actions;
}
- (void) populateActions {
}
- (void) dealloc {
[actions release];
[super dealloc];
}
@end