components/TextFields/src/MDCTextInputControllerLegacyFullWidth.m

/*
 Copyright 2016-present the Material Components for iOS authors. All Rights Reserved.

 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 "MDCTextInputControllerLegacyFullWidth.h"

#import "MDCIntrinsicHeightTextView.h"
#import "MDCMultilineTextField.h"
#import "MDCTextField.h"
#import "MDCTextInput.h"
#import "MDCTextInputCharacterCounter.h"
#import "MDCTextInputUnderlineView.h"
#import "private/MDCTextInputArt.h"

#import "MaterialAnimationTiming.h"
#import "MaterialMath.h"
#import "MaterialPalettes.h"
#import "MaterialTypography.h"

static const CGFloat MDCTextInputControllerLegacyFullWidthClearButtonImageSquareWidthHeight = 24.f;

@interface MDCTextInputControllerFullWidth ()
- (void)setupInput;
@end
@implementation MDCTextInputControllerLegacyFullWidth


- (void)setupInput {
  [super setupInput];
  if (!self.textInput) {
    return;
  }

  [self setupClearButton];
}

- (void)setupClearButton {
  UIImage *image = [self
      drawnClearButtonImage:[UIColor colorWithWhite:0 alpha:[MDCTypography captionFontOpacity]]];
  [self.textInput.clearButton setImage:image forState:UIControlStateNormal];
}

#pragma mark - Clear Button Customization

- (UIImage *)drawnClearButtonImage:(UIColor *)color {
  CGSize clearButtonSize =
      CGSizeMake(MDCTextInputControllerLegacyFullWidthClearButtonImageSquareWidthHeight,
                 MDCTextInputControllerLegacyFullWidthClearButtonImageSquareWidthHeight);

  CGFloat scale = [UIScreen mainScreen].scale;
  CGRect bounds = CGRectMake(0, 0, clearButtonSize.width * scale, clearButtonSize.height * scale);
  UIGraphicsBeginImageContextWithOptions(bounds.size, false, scale);
  [color setFill];

  [MDCPathForClearButtonLegacyImageFrame(bounds) fill];
  UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
  UIGraphicsEndImageContext();

  image = [image imageWithRenderingMode:UIImageRenderingModeAlwaysTemplate];
  return image;
}

#pragma mark - NSSecureCoding

+ (BOOL)supportsSecureCoding {
  return YES;
}

@end