mirror of
https://github.com/vector-im/element-ios.git
synced 2024-10-01 00:32:41 +00:00
244 lines
No EOL
7.4 KiB
Objective-C
244 lines
No EOL
7.4 KiB
Objective-C
/*
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Copyright 2014 OpenMarket Ltd
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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#import "CustomImageView.h"
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#import "MediaManager.h"
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#import "AppDelegate.h"
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@interface CustomImageView () {
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id imageLoader;
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UIActivityIndicatorView *loadingWheel;
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// validation buttons
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UIButton* leftButton;
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UIButton* rightButton;
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NSString* leftButtonTitle;
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NSString* rightButtonTitle;
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blockCustomImageView_onClick leftHandler;
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blockCustomImageView_onClick rightHandler;
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UIView* bottomBarView;
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}
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@end
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@implementation CustomImageView
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#define CUSTOM_IMAGE_VIEW_BUTTON_WIDTH 100
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- (id)initWithFrame:(CGRect)frame {
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self = [super initWithFrame:frame];
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if (self) {
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leftButtonTitle = nil;
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leftHandler = nil;
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rightButtonTitle = nil;
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rightHandler = nil;
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self.backgroundColor = [UIColor blackColor];
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self.contentMode = UIViewContentModeScaleAspectFit;
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self.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight | UIViewAutoresizingFlexibleTopMargin;
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}
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return self;
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}
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- (void)dealloc {
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if (imageLoader) {
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[MediaManager cancel:imageLoader];
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imageLoader = nil;
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}
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if (loadingWheel) {
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[loadingWheel removeFromSuperview];
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loadingWheel = nil;
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}
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if (bottomBarView) {
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[bottomBarView removeFromSuperview];
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bottomBarView = nil;
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}
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}
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- (void)startActivityIndicator {
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// Add activity indicator if none
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if (loadingWheel == nil) {
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loadingWheel = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleGray];
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[self addSubview:loadingWheel];
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}
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// Adjust position
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CGPoint center = CGPointMake(self.frame.size.width / 2, self.frame.size.height / 2);
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loadingWheel.center = center;
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// Adjust color
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if ([self.backgroundColor isEqual:[UIColor blackColor]]) {
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loadingWheel.activityIndicatorViewStyle = UIActivityIndicatorViewStyleWhite;
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} else {
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loadingWheel.activityIndicatorViewStyle = UIActivityIndicatorViewStyleGray;
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}
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// Start
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[loadingWheel startAnimating];
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}
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- (void)stopActivityIndicator {
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if (loadingWheel) {
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[loadingWheel stopAnimating];
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}
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}
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#pragma mark -
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- (IBAction)onButtonToggle:(id)sender
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{
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if (sender == leftButton) {
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dispatch_async(dispatch_get_main_queue(), ^{
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leftHandler(self, leftButtonTitle);
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});
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} else if (sender == rightButton) {
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dispatch_async(dispatch_get_main_queue(), ^{
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rightHandler(self, rightButtonTitle);
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});
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}
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}
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// add a generic button to the bottom view
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// return the added UIButton
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- (UIButton*) addbuttonWithTitle:(NSString*)title {
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UIButton* button = [[UIButton alloc] init];
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[button setTitle:title forState:UIControlStateNormal];
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[button setTitle:title forState:UIControlStateHighlighted];
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// default background text color
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CGFloat textColorFactor = 146.0 / 255.0;
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UIColor* textColor = [UIColor colorWithRed:textColorFactor green:textColorFactor blue:textColorFactor alpha:1.0];
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[button setTitleColor:textColor forState:UIControlStateNormal];
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[button setTitleColor:textColor forState:UIControlStateHighlighted];
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// keep the bottomView background color
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button.backgroundColor = [UIColor clearColor];
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[button addTarget:self action:@selector(onButtonToggle:) forControlEvents:UIControlEventTouchUpInside];
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[bottomBarView addSubview:button];
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return button;
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}
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- (void)layoutSubviews {
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// call upper layer
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[super layoutSubviews];
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// check if the dedicated buttons are already added
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if (leftButtonTitle || rightButtonTitle) {
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if (!bottomBarView) {
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bottomBarView = [[UIView alloc] init];
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if (leftButtonTitle) {
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leftButton = [self addbuttonWithTitle:leftButtonTitle];
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}
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rightButton = [[UIButton alloc] init];
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if (rightButtonTitle) {
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rightButton = [self addbuttonWithTitle:rightButtonTitle];
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}
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// default tabbar background color
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CGFloat base = 248.0 / 255.0f;
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bottomBarView.backgroundColor = [UIColor colorWithRed:base green:base blue:base alpha:1.0];
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[[AppDelegate theDelegate].masterTabBarController.tabBar addSubview:bottomBarView];
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}
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// manage the item
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CGRect tabBarFrame = [AppDelegate theDelegate].masterTabBarController.tabBar.frame;
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tabBarFrame.origin.y = 0;
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bottomBarView.frame = tabBarFrame;
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if (leftButton) {
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leftButton.frame = CGRectMake(0, 0, CUSTOM_IMAGE_VIEW_BUTTON_WIDTH, bottomBarView.frame.size.height);
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}
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if (rightButton) {
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rightButton.frame = CGRectMake(bottomBarView.frame.size.width - CUSTOM_IMAGE_VIEW_BUTTON_WIDTH, 0, CUSTOM_IMAGE_VIEW_BUTTON_WIDTH, bottomBarView.frame.size.height);
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}
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}
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}
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- (void)setHideActivityIndicator:(BOOL)hideActivityIndicator {
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_hideActivityIndicator = hideActivityIndicator;
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if (hideActivityIndicator) {
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[self stopActivityIndicator];
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} else if (imageLoader) {
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// Loading is in progress, start activity indicator
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[self startActivityIndicator];
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}
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}
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- (void)setImageURL:(NSString *)imageURL {
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// Cancel media loader in progress (if any)
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if (imageLoader) {
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[MediaManager cancel:imageLoader];
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imageLoader = nil;
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}
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_imageURL = imageURL;
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// Reset image view
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self.image = nil;
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if (_placeholder) {
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// Set picture placeholder
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self.image = [UIImage imageNamed:_placeholder];
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}
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// Consider provided url to update image view
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if (imageURL) {
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// Load picture
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if (!_hideActivityIndicator) {
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[self startActivityIndicator];
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}
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imageLoader = [MediaManager loadPicture:imageURL
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success:^(UIImage *image) {
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[self stopActivityIndicator];
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self.image = image;
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}
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failure:^(NSError *error) {
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[self stopActivityIndicator];
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NSLog(@"Failed to download image (%@): %@", imageURL, error);
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}];
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}
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}
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#pragma mark - buttons management
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- (void)setLeftButtonTitle: aLeftButtonTitle handler:(blockCustomImageView_onClick)handler {
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leftButtonTitle = aLeftButtonTitle;
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leftHandler = handler;
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}
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- (void)setRightButtonTitle:aRightButtonTitle handler:(blockCustomImageView_onClick)handler {
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rightButtonTitle = aRightButtonTitle;
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rightHandler = handler;
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}
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- (void)dismissSelection {
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if (bottomBarView) {
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[bottomBarView removeFromSuperview];
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bottomBarView = nil;
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}
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}
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@end |