393 lines
17 KiB
Objective-C
393 lines
17 KiB
Objective-C
/*
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* Copyright [2019] [Doric.Pub]
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*
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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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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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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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//
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// DoricTextNode.m
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// Doric
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//
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// Created by pengfei.zhou on 2019/7/31.
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//
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#import "DoricTextNode.h"
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#import "DoricUtil.h"
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#import "DoricGroupNode.h"
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#import "Doric.h"
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#import <CoreText/CoreText.h>
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@interface DoricTextView : UILabel
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@property(nonatomic, assign) DoricGravity gravity;
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@end
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@implementation DoricTextView
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- (void)drawTextInRect:(CGRect)rect {
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rect = UIEdgeInsetsInsetRect(
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rect,
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UIEdgeInsetsMake(
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self.doricLayout.paddingTop,
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self.doricLayout.paddingLeft,
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self.doricLayout.paddingBottom,
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self.doricLayout.paddingRight));
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if ((self.gravity & DoricGravityTop) == DoricGravityTop) {
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rect.origin.y = self.doricLayout.paddingTop;
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rect.size.height = self.doricLayout.contentHeight;
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} else if ((self.gravity & DoricGravityBottom) == DoricGravityBottom) {
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rect.origin.y = self.height - self.doricLayout.contentHeight - self.doricLayout.paddingBottom;
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rect.size.height = self.doricLayout.contentHeight;
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}
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rect.size.width = MAX(0.01f, rect.size.width);
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[super drawTextInRect:rect];
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}
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- (CGSize)sizeThatFits:(CGSize)size {
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return [super sizeThatFits:size];
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}
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@end
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@interface DoricTextNode ()
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@property(nonatomic, strong) NSMutableParagraphStyle *paragraphStyle;
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@property(nonatomic, copy) NSNumber *underline;
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@property(nonatomic, copy) NSNumber *strikethrough;
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@property(nonatomic, strong) NSDictionary *textGradientProps;
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@property(nonatomic, assign) CGSize textGradientSize;
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@end
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@implementation DoricTextNode
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- (UILabel *)build {
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return [[[DoricTextView alloc] init] also:^(DoricTextView *it) {
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[self ensureParagraphStyle];
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}];
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}
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- (void)blendView:(UILabel *)view forPropName:(NSString *)name propValue:(id)prop {
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if ([name isEqualToString:@"text"]) {
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view.text = prop;
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if (self.paragraphStyle) {
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[self reloadParagraphStyle];
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}
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} else if ([name isEqualToString:@"textSize"]) {
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UIFont *font = view.font;
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if (font) {
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view.font = [view.font fontWithSize:[(NSNumber *) prop floatValue]];
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} else {
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view.font = [UIFont systemFontOfSize:[(NSNumber *) prop floatValue]];
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}
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} else if ([name isEqualToString:@"textColor"]) {
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if ([prop isKindOfClass:[NSNumber class]]) {
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view.textColor = DoricColor(prop);
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self.textGradientProps = nil;
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self.textGradientSize = CGSizeZero;
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} else if ([prop isKindOfClass:[NSDictionary class]]) {
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self.textGradientProps = prop;
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self.textGradientSize = CGSizeZero;
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}
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} else if ([name isEqualToString:@"textAlignment"]) {
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DoricGravity gravity = (DoricGravity) [(NSNumber *) prop integerValue];
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NSTextAlignment alignment = NSTextAlignmentCenter;
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if ((gravity & DoricGravityLeft) == DoricGravityLeft) {
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alignment = NSTextAlignmentLeft;
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} else if ((gravity & DoricGravityRight) == DoricGravityRight) {
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alignment = NSTextAlignmentRight;
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}
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if (self.paragraphStyle) {
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self.paragraphStyle.alignment = alignment;
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NSMutableAttributedString *attributedString = [[NSMutableAttributedString alloc] initWithString:view.text ?: @""];
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[attributedString addAttribute:NSParagraphStyleAttributeName value:self.paragraphStyle range:NSMakeRange(0, [attributedString length])];
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view.attributedText = attributedString;
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} else {
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view.textAlignment = alignment;
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}
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((DoricTextView *) view).gravity = gravity;
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} else if ([name isEqualToString:@"maxLines"]) {
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view.numberOfLines = [prop integerValue];
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} else if ([name isEqualToString:@"fontStyle"]) {
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UIFont *font = view.font;
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if (!font) {
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font = [UIFont systemFontOfSize:[UIFont systemFontSize]];
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}
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UIFontDescriptor *fontDescriptor = nil;
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if ([@"bold" isEqualToString:prop]) {
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fontDescriptor = [font.fontDescriptor fontDescriptorWithSymbolicTraits:UIFontDescriptorTraitBold];
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} else if ([@"italic" isEqualToString:prop]) {
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fontDescriptor = [font.fontDescriptor fontDescriptorWithSymbolicTraits:UIFontDescriptorTraitItalic];
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} else if ([@"bold_italic" isEqualToString:prop]) {
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fontDescriptor = [font.fontDescriptor fontDescriptorWithSymbolicTraits:UIFontDescriptorTraitBold | UIFontDescriptorTraitItalic];
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}
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if (fontDescriptor) {
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font = [UIFont fontWithDescriptor:fontDescriptor size:0];
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} else {
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font = [UIFont fontWithName:font.fontName size:font.pointSize];
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}
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view.font = font;
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} else if ([name isEqualToString:@"maxWidth"]) {
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view.doricLayout.maxWidth = [prop floatValue];
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} else if ([name isEqualToString:@"maxHeight"]) {
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view.doricLayout.maxHeight = [prop floatValue];
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} else if ([name isEqualToString:@"font"]) {
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if ([prop isKindOfClass:[NSString class]]) {
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NSString *iconfont = prop;
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UIFont *font = [UIFont fontWithName:[iconfont stringByReplacingOccurrencesOfString:@".ttf" withString:@""]
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size:view.font.pointSize];
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view.font = font;
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} else if ([prop isKindOfClass:[NSDictionary class]]) {
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DoricAsyncResult <NSData *> *asyncResult = [[self.doricContext.driver.registry.loaderManager
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load:prop
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withContext:self.doricContext] fetch];
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[asyncResult setResultCallback:^(NSData *fontData) {
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[self.doricContext dispatchToMainQueue:^{
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view.font = [self registerFontWithFontData:fontData fontSize:view.font.pointSize];
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}];
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}];
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[asyncResult setExceptionCallback:^(NSException *e) {
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DoricLog(@"Cannot load resource %@, %@", prop, e.reason);
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}];
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} else {
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DoricLog(@"load resource error for View Type :%@, prop is %@", self.class, name);
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}
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} else if ([name isEqualToString:@"lineSpacing"]) {
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[[self ensureParagraphStyle] also:^(NSMutableParagraphStyle *it) {
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[it setLineSpacing:[prop floatValue]];
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[self reloadParagraphStyle];
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}];
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} else if ([name isEqualToString:@"underline"]) {
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[[self ensureParagraphStyle] also:^(NSMutableParagraphStyle *it) {
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self.underline = prop;
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[self reloadParagraphStyle];
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}];
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} else if ([name isEqualToString:@"strikethrough"]) {
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[[self ensureParagraphStyle] also:^(NSMutableParagraphStyle *it) {
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self.strikethrough = prop;
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[self reloadParagraphStyle];
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}];
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} else if ([name isEqualToString:@"htmlText"]) {
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NSAttributedString *attStr = [[NSAttributedString alloc] initWithData:[prop dataUsingEncoding:NSUnicodeStringEncoding]
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options:@{NSDocumentTypeDocumentAttribute: NSHTMLTextDocumentType}
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documentAttributes:nil
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error:nil];
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view.attributedText = attStr;
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} else if ([name isEqualToString:@"truncateAt"]) {
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[prop also:^(NSNumber *truncateAt) {
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[[self ensureParagraphStyle] also:^(NSMutableParagraphStyle *it) {
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switch (truncateAt.integerValue) {
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case 1:
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it.lineBreakMode = NSLineBreakByTruncatingMiddle;
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break;
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case 2:
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it.lineBreakMode = NSLineBreakByTruncatingHead;
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break;
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case 3:
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it.lineBreakMode = NSLineBreakByClipping;
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break;
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default:
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it.lineBreakMode = NSLineBreakByTruncatingTail;
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break;
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}
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[self reloadParagraphStyle];
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}];
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}];
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} else if ([name isEqualToString:@"shadow"]) {
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NSDictionary *dic = prop;
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CGFloat opacity = [(NSNumber *) dic[@"opacity"] floatValue];
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if (opacity > CGFLOAT_MIN) {
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UIColor *color = DoricColor((NSNumber *) dic[@"color"]);
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view.layer.shadowColor = color.CGColor;
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view.layer.shadowRadius = [(NSNumber *) dic[@"radius"] floatValue];
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view.layer.shadowOffset = CGSizeMake([(NSNumber *) dic[@"offsetX"] floatValue], [(NSNumber *) dic[@"offsetY"] floatValue]);
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view.layer.shadowOpacity = (float) opacity;
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}
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} else {
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[super blendView:view forPropName:name propValue:prop];
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}
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}
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- (NSMutableParagraphStyle *)ensureParagraphStyle {
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if (self.paragraphStyle == nil) {
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self.paragraphStyle = [NSMutableParagraphStyle new];
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self.paragraphStyle.alignment = NSTextAlignmentCenter;
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self.paragraphStyle.lineBreakMode = NSLineBreakByTruncatingTail;
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}
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return self.paragraphStyle;
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}
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- (void)reloadParagraphStyle {
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NSString *labelText = self.view.text ?: @"";
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NSMutableAttributedString *attributedString = [[NSMutableAttributedString alloc] initWithString:labelText];
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if (self.view.attributedText) {
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[attributedString setAttributedString:self.view.attributedText];
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}
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[attributedString addAttribute:NSParagraphStyleAttributeName value:self.paragraphStyle range:NSMakeRange(0, [labelText length])];
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if (self.underline) {
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[attributedString addAttribute:NSUnderlineStyleAttributeName value:self.underline range:NSMakeRange(0, [labelText length])];
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}
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if (self.strikethrough) {
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[attributedString addAttribute:NSStrikethroughStyleAttributeName value:self.strikethrough range:NSMakeRange(0, [labelText length])];
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}
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self.view.attributedText = attributedString;
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}
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- (void)blend:(NSDictionary *)props {
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[super blend:props];
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self.view.doricLayout.resolved = NO;
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}
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- (void)requestLayout {
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[super requestLayout];
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[self.textGradientProps also:^(NSDictionary *dict) {
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if (CGSizeEqualToSize(self.textGradientSize, self.view.frame.size)) {
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return;
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}
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self.textGradientSize = self.view.frame.size;
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NSMutableArray *colors = [[NSMutableArray alloc] init];
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NSMutableArray *arrayLocations = nil;
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if (dict[@"colors"] != nil) {
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NSMutableArray *arrayColors = [dict mutableArrayValueForKey:@"colors"];
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[arrayColors forEach:^(id obj) {
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[colors addObject:(__bridge id) DoricColor(obj).CGColor];
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}];
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if (dict[@"locations"] != nil) {
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arrayLocations = [dict mutableArrayValueForKey:@"locations"];
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}
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} else {
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if (dict[@"start"] != nil && dict[@"end"] != nil) {
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UIColor *start = DoricColor(dict[@"start"]);
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UIColor *end = DoricColor(dict[@"end"]);
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[colors addObject:(__bridge id) start.CGColor];
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[colors addObject:(__bridge id) end.CGColor];
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}
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}
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int orientation = [dict[@"orientation"] intValue];
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CGPoint startPoint;
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CGPoint endPoint;
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if (orientation == 1) {
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startPoint = CGPointMake(1, 0);
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endPoint = CGPointMake(0, 1);
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} else if (orientation == 2) {
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startPoint = CGPointMake(1, 0);
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endPoint = CGPointMake(0, 0);
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} else if (orientation == 3) {
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startPoint = CGPointMake(1, 1);
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endPoint = CGPointMake(0, 0);
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} else if (orientation == 4) {
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startPoint = CGPointMake(0, 1);
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endPoint = CGPointMake(0, 0);
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} else if (orientation == 5) {
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startPoint = CGPointMake(0, 1);
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endPoint = CGPointMake(1, 0);
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} else if (orientation == 6) {
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startPoint = CGPointMake(0, 0);
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endPoint = CGPointMake(1, 0);
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} else if (orientation == 7) {
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startPoint = CGPointMake(0, 0);
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endPoint = CGPointMake(1, 1);
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} else {
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startPoint = CGPointMake(0, 0);
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endPoint = CGPointMake(0, 1);
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}
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UIImage *gradientImage;
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if (arrayLocations != nil) {
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CGFloat locations[arrayLocations.count];
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for (int i = 0; i != arrayLocations.count; i++) {
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locations[i] = [arrayLocations[i] floatValue];
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}
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gradientImage = [self gradientImageFromColors:colors
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locations:locations
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startPoint:startPoint
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endPoint:endPoint
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imgSize:self.textGradientSize];
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} else {
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gradientImage = [self gradientImageFromColors:colors
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locations:NULL
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startPoint:startPoint
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endPoint:endPoint
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imgSize:self.textGradientSize];
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}
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self.view.textColor = [UIColor colorWithPatternImage:gradientImage];
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}];
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}
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- (UIFont *)registerFontWithFontData:(NSData *)fontData fontSize:(CGFloat)fontSize{
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CGDataProviderRef fontDataProvider = CGDataProviderCreateWithCFData((__bridge CFDataRef)fontData);
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// THE NEXT LINE IS RELEVANT PART
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// https://stackoverflow.com/questions/24900979/cgfontcreatewithdataprovider-hangs-in-airplane-mode
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[UIFont familyNames];
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CGFontRef fontRef = CGFontCreateWithDataProvider(fontDataProvider);
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CGDataProviderRelease(fontDataProvider);
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CTFontManagerRegisterGraphicsFont(fontRef, NULL);
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NSString *fontName = CFBridgingRelease(CGFontCopyPostScriptName(fontRef));
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UIFont *font = [UIFont fontWithName:fontName size:fontSize];
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CGFontRelease(fontRef);
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return font;
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}
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- (UIImage *)gradientImageFromColors:(NSArray *)colors
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locations:(CGFloat *)locations
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startPoint:(CGPoint)startPoint
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endPoint:(CGPoint)endPoint
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imgSize:(CGSize)imgSize {
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if (@available(iOS 10.0, *)) {
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UIGraphicsImageRendererFormat *format = [[UIGraphicsImageRendererFormat alloc] init];
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format.scale = [UIScreen mainScreen].scale;
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UIGraphicsImageRenderer *render = [[UIGraphicsImageRenderer alloc] initWithSize:imgSize format:format];
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UIImage *image = [render imageWithActions:^(UIGraphicsImageRendererContext *_Nonnull rendererContext) {
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CGContextRef context = rendererContext.CGContext;
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CGContextSaveGState(context);
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CGColorSpaceRef colorSpace = CGColorGetColorSpace((__bridge CGColorRef) colors.lastObject);
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CGGradientRef gradient = CGGradientCreateWithColors(colorSpace, (__bridge CFArrayRef) colors, locations);
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CGPoint start = (CGPoint) {startPoint.x * imgSize.width, startPoint.y * imgSize.height};
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CGPoint end = (CGPoint) {endPoint.x * imgSize.width, endPoint.y * imgSize.height};
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CGContextDrawLinearGradient(context, gradient, start, end, kCGGradientDrawsBeforeStartLocation | kCGGradientDrawsAfterEndLocation);
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CGGradientRelease(gradient);
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CGContextRestoreGState(context);
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}];
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return image;
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} else {
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UIGraphicsBeginImageContextWithOptions(imgSize, NO, [UIScreen mainScreen].scale);
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CGContextRef context = UIGraphicsGetCurrentContext();
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CGContextSaveGState(context);
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CGColorSpaceRef colorSpace = CGColorGetColorSpace((__bridge CGColorRef) colors.lastObject);
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CGGradientRef gradient = CGGradientCreateWithColors(colorSpace, (__bridge CFArrayRef) colors, locations);
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CGPoint start = (CGPoint) {startPoint.x * imgSize.width, startPoint.y * imgSize.height};
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CGPoint end = (CGPoint) {endPoint.x * imgSize.width, endPoint.y * imgSize.height};
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CGContextDrawLinearGradient(context, gradient, start, end, kCGGradientDrawsBeforeStartLocation | kCGGradientDrawsAfterEndLocation);
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UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
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CGGradientRelease(gradient);
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CGContextRestoreGState(context);
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UIGraphicsEndImageContext();
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return image;
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}
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}
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- (void)reset {
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[super reset];
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self.view.text = nil;
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self.view.font = nil;
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self.view.textColor = UIColor.blackColor;
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self.view.textAlignment = NSTextAlignmentNatural;
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self.view.numberOfLines = 1;
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self.view.layer.shadowOpacity = 0;
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self.view.layer.shadowRadius = 3;
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self.view.layer.shadowOffset = CGSizeMake(0, -3);
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self.view.lineBreakMode = NSLineBreakByTruncatingTail;
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}
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@end
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