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QSImageCaptureFormItem.m
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QSImageCaptureFormItem.m
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/**
* QSImageCaptureFormItem.m
*
* Copyright (c) 2010 - 2011, Quasidea Development, LLC
* For more information, please go to http://www.quasidea.com/
*
* 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 <UIKit/UITableView.h>
#import "QSForm.h"
@implementation QSImageCaptureFormItem
@synthesize _objImage;
- (QSImageCaptureFormItem *)initWithKey:(NSString *)strKey Label:(NSString *)strLabel Image:(UIImage *)objImage {
if (self = (QSImageCaptureFormItem *)[super initWithKey:strKey Label:strLabel]) {
_objImage = objImage;
[_objImage retain];
}
return self;
}
- (UITableViewCell *)getUITableViewCellForUITableView:(UITableView *)objTableView {
UITableViewCell * objCell = [super getUITableViewCellForUITableView:objTableView];
[self refreshImageView];
if ([[objCell subviews] indexOfObject:_imgView] == NSNotFound) {
[[objCell contentView] addSubview:_imgView];
[[objCell contentView] addSubview:_lblTapHere];
[[objCell contentView] addSubview:_imgTrash];
}
[_imgTrash removeTarget:nil action:NULL forControlEvents:UIControlEventAllEvents];
[_imgTrash addTarget:self action:@selector(eraseClick:) forControlEvents:UIControlEventTouchUpInside];
return objCell;
}
- (CGFloat)refreshImageView {
// Setup Trash Icon
if (_imgTrash == nil) {
_imgTrash = [UIButton buttonWithType:UIButtonTypeCustom];
[_imgTrash retain];
[_imgTrash setFrame:CGRectMake(41, 29, 50, 40)];
[_imgTrash setBackgroundImage:[UIImage imageNamed:@"trash.png"] forState:UIControlStateNormal];
}
if (_imgView == nil) {
_imgView = [[UIImageView alloc] initWithFrame:CGRectZero];
[_imgView setUserInteractionEnabled:false];
}
if (_lblTapHere == nil) {
_lblTapHere = [[UILabel alloc] initWithFrame:[self getControlFrameWithHeight:25]];
[_lblTapHere setText:@"Tap to Access Camera"];
[_lblTapHere setBackgroundColor:[UIColor clearColor]];
[_lblTapHere setTextColor:[UIColor grayColor]];
[_lblTapHere setFont:[UIFont italicSystemFontOfSize:[UIFont systemFontSize]]];
}
// Image?
if (_objImage) {
[_lblTapHere setHidden:true];
[_imgTrash setHidden:false];
[_imgView setHidden:false];
CGFloat fltWidth = [self getControlWidth];
CGFloat fltHeight = fltWidth * [_objImage size].height / [_objImage size].width;
CGRect objRect = CGRectMake((_blnShortLabelFlag ? kShortLabelWidth : kLabelWidth) + kLabelSideMargin + kLabelGutterMargin,
kLabelTopMargin,
fltWidth,
fltHeight);
[_imgView setFrame:objRect];
[_imgView setImage:_objImage];
return fltHeight + 2*kLabelTopMargin;
// No Image
} else {
[_lblTapHere setHidden:false];
[_imgTrash setHidden:true];
[_imgView setHidden:true];
[_imgView setImage:nil];
return 40.0f;
}
}
- (void)eraseClick:(id)sender {
[self setImage:nil];
if (_objOnChangeTarget) [_objOnChangeTarget performSelector:_objOnChangeAction withObject:self];
}
- (CGFloat)getHeight {
CGFloat fltParentHeight = [super getHeight];
if (_blnHiddenFlag) return 0;
return MAX([self refreshImageView], fltParentHeight);
}
- (bool)tableViewCellTapped:(UITableViewCell *)objCell {
UIImagePickerController * objImagePicker = [[UIImagePickerController alloc] init];
[objImagePicker setDelegate:self];
[objImagePicker setAllowsEditing:false];
if ([UIImagePickerController isSourceTypeAvailable: UIImagePickerControllerSourceTypeCamera]) {
// Has camera
[objImagePicker setSourceType:UIImagePickerControllerSourceTypeCamera];
} else {
[objImagePicker setSourceType: UIImagePickerControllerSourceTypeSavedPhotosAlbum];
}
[[_objForm navigatedViewController] presentModalViewController:objImagePicker animated:true];
[objImagePicker autorelease];
return false;
}
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
[self setImage:(UIImage *)[info objectForKey:UIImagePickerControllerOriginalImage]];
[picker dismissModalViewControllerAnimated:true];
if (_objOnChangeTarget) [_objOnChangeTarget performSelector:_objOnChangeAction withObject:self];
}
- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker {
[picker dismissModalViewControllerAnimated:true];
}
- (void)dealloc {
[self setImage:nil];
[_imgView release];
[_imgTrash release];
[_lblTapHere release];
[super dealloc];
}
#pragma mark -
#pragma mark Helper Methods
- (UIImage *) compressImage{
UIImage * imgCurrent = [self image];
if (imgCurrent == nil) {
return nil;
}
float actualHeight = imgCurrent.size.height;
float actualWidth = imgCurrent.size.width;
float maxHeight = 768.0;
float maxWidth = 1024.0;
float imgRatio = actualWidth / actualHeight;
float maxRatio = maxWidth / maxHeight;
float compressionQuality = 1; // 100 percent compression (no compression)
if (actualHeight > maxHeight || actualWidth > maxWidth){
if (imgRatio < maxRatio) {
//adjust width according to maxHeight
imgRatio = maxHeight / actualHeight;
actualWidth = imgRatio * actualWidth;
actualHeight = maxHeight;
}
else if (imgRatio > maxRatio) {
//adjust height according to maxWidth
imgRatio = maxWidth / actualWidth;
actualHeight = imgRatio * actualHeight;
actualWidth = maxWidth;
}
else {
actualHeight = maxHeight;
actualWidth = maxWidth;
}
}
CGRect rect = CGRectMake(0.0, 0.0, actualWidth, actualHeight);
UIGraphicsBeginImageContext(rect.size);
[imgCurrent drawInRect:rect];
UIImage *img = UIGraphicsGetImageFromCurrentImageContext();
NSData *imageData = UIImageJPEGRepresentation(img, compressionQuality);
UIGraphicsEndImageContext();
return [UIImage imageWithData:imageData];
}
@end