468 lines
15 KiB
Objective-C
468 lines
15 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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// Created by pengfei.zhou on 2019/10/23.
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//
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#import "DoricLayouts.h"
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#import <objc/runtime.h>
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#import "UIView+Doric.h"
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static const void *kLayoutConfig = &kLayoutConfig;
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@implementation UIView (DoricLayoutConfig)
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@dynamic layoutConfig;
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- (void)setLayoutConfig:(DoricLayoutConfig *)layoutConfig {
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objc_setAssociatedObject(self, kLayoutConfig, layoutConfig, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
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}
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- (DoricLayoutConfig *)layoutConfig {
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return objc_getAssociatedObject(self, kLayoutConfig);
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}
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@end
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static const void *kLayoutPadding = &kLayoutPadding;
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@implementation UIView (DoricPadding)
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@dynamic padding;
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- (void)setPadding:(DoricPadding)padding {
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objc_setAssociatedObject(self, kLayoutPadding, [NSValue value:&padding withObjCType:@encode(DoricPadding)], OBJC_ASSOCIATION_RETAIN_NONATOMIC);
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}
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- (DoricPadding)padding {
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DoricPadding value;
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value.left = value.right = value.top = value.bottom = 0;
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[objc_getAssociatedObject(self, kLayoutPadding) getValue:&value];
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return value;
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}
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@end
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static const void *kTagString = &kTagString;
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@implementation UIView (DoricTag)
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- (void)setTagString:(NSString *)tagString {
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objc_setAssociatedObject(self, kTagString, tagString, OBJC_ASSOCIATION_COPY_NONATOMIC);
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self.tag = [tagString hash];
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}
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- (NSString *)tagString {
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return objc_getAssociatedObject(self, kTagString);
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}
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- (UIView *)viewWithTagString:(NSString *)tagString {
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// notice the potential hash collision
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return [self viewWithTag:[tagString hash]];
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}
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@end
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@implementation UIView (DoricLayouts)
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/**
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* Measure self's size
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* */
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- (CGSize)measureSize:(CGSize)targetSize {
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CGFloat width = self.width;
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CGFloat height = self.height;
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DoricLayoutConfig *config = self.layoutConfig;
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if (!config) {
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config = [DoricLayoutConfig new];
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}
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if (config.widthSpec == DoricLayoutAtMost
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|| config.widthSpec == DoricLayoutWrapContent) {
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width = targetSize.width - config.margin.left - config.margin.right;
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}
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if (config.heightSpec == DoricLayoutAtMost
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|| config.heightSpec == DoricLayoutWrapContent) {
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height = targetSize.height - config.margin.top - config.margin.bottom;
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}
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DoricPadding padding = self.padding;
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CGSize contentSize = [self sizeThatFits:CGSizeMake(
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width - padding.left - padding.right,
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height - padding.top - padding.bottom)];
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if (config.widthSpec == DoricLayoutWrapContent) {
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width = contentSize.width + padding.left + padding.right;
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}
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if (config.heightSpec == DoricLayoutWrapContent) {
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height = contentSize.height + padding.top + padding.bottom;
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}
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return CGSizeMake(width, height);
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}
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/**
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* layout self and subviews
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* */
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- (void)layoutSelf:(CGSize)targetSize {
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self.width = targetSize.width;
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self.height = targetSize.height;
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for (UIView *view in self.subviews) {
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[view layoutSelf:[view measureSize:targetSize]];
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}
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}
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- (void)doricLayoutSubviews {
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if ([self.superview requestFromSubview:self]) {
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[self.superview doricLayoutSubviews];
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} else {
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[self layoutSelf:CGSizeMake(self.width, self.height)];
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}
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}
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- (BOOL)requestFromSubview:(UIView *)subview {
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if (self.layoutConfig
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&& self.layoutConfig.widthSpec != DoricLayoutExact
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&& self.layoutConfig.heightSpec != DoricLayoutExact) {
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return YES;
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}
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return NO;
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}
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@end
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DoricMargin DoricMarginMake(CGFloat left, CGFloat top, CGFloat right, CGFloat bottom) {
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DoricMargin margin;
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margin.left = left;
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margin.top = top;
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margin.right = right;
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margin.bottom = bottom;
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return margin;
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}
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@implementation DoricLayoutConfig
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- (instancetype)init {
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if (self = [super init]) {
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_widthSpec = DoricLayoutExact;
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_heightSpec = DoricLayoutExact;
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}
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return self;
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}
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- (instancetype)initWithWidth:(DoricLayoutSpec)width height:(DoricLayoutSpec)height {
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if (self = [super init]) {
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_widthSpec = width;
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_heightSpec = height;
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}
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return self;
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}
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- (instancetype)initWithWidth:(DoricLayoutSpec)width height:(DoricLayoutSpec)height margin:(DoricMargin)margin {
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if (self = [super init]) {
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_widthSpec = width;
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_heightSpec = height;
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_margin = margin;
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}
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return self;
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}
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@end
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@interface DoricLayoutContainer ()
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@property(nonatomic, assign) CGFloat contentWidth;
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@property(nonatomic, assign) CGFloat contentHeight;
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@property(nonatomic, assign) NSUInteger contentWeight;
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@end
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@implementation DoricLayoutContainer
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- (void)setNeedsLayout {
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[super setNeedsLayout];
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}
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- (void)layoutSubviews {
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[super layoutSubviews];
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[self doricLayoutSubviews];
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}
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@end
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@interface DoricStackView ()
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@end
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@implementation DoricStackView
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- (CGSize)sizeThatFits:(CGSize)size {
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CGFloat contentWidth = 0;
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CGFloat contentHeight = 0;
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for (UIView *child in self.subviews) {
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if (child.isHidden) {
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continue;
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}
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DoricLayoutConfig *childConfig = child.layoutConfig;
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if (!childConfig) {
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childConfig = [DoricLayoutConfig new];
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}
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CGSize childSize;
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if (CGAffineTransformEqualToTransform(child.transform, CGAffineTransformIdentity)) {
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childSize = [child measureSize:CGSizeMake(size.width, size.height)];
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} else {
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childSize = child.bounds.size;
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}
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contentWidth = MAX(contentWidth, childSize.width + childConfig.margin.left + childConfig.margin.right);
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contentHeight = MAX(contentHeight, childSize.height + childConfig.margin.top + childConfig.margin.bottom);
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}
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self.contentWidth = contentWidth;
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self.contentHeight = contentHeight;
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return CGSizeMake(contentWidth, contentHeight);
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}
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- (void)layoutSelf:(CGSize)targetSize {
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self.width = targetSize.width;
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self.height = targetSize.height;
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DoricPadding padding = self.padding;
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for (UIView *child in self.subviews) {
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if (child.isHidden) {
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continue;
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}
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if (!CGAffineTransformEqualToTransform(child.transform, CGAffineTransformIdentity)) {
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continue;
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}
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DoricLayoutConfig *childConfig = child.layoutConfig;
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if (!childConfig) {
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childConfig = [DoricLayoutConfig new];
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}
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CGSize size = [child measureSize:CGSizeMake(
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targetSize.width - padding.left - padding.right,
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targetSize.height - padding.top - padding.bottom)];
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[child layoutSelf:size];
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DoricGravity gravity = childConfig.alignment;
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if ((gravity & LEFT) == LEFT) {
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child.left = padding.left;
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} else if ((gravity & RIGHT) == RIGHT) {
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child.right = targetSize.width - padding.right;
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} else if ((gravity & CENTER_X) == CENTER_X) {
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child.centerX = targetSize.width / 2;
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} else {
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if (childConfig.margin.left) {
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child.left = childConfig.margin.left + padding.left;
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} else if (childConfig.margin.right) {
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child.right = targetSize.width - childConfig.margin.right - padding.right;
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}
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}
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if ((gravity & TOP) == TOP) {
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child.top = padding.top;
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} else if ((gravity & BOTTOM) == BOTTOM) {
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child.bottom = targetSize.height - padding.bottom;
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} else if ((gravity & CENTER_Y) == CENTER_Y) {
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child.centerY = targetSize.height / 2;
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} else {
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if (childConfig.margin.top) {
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child.top = childConfig.margin.top + padding.top;
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} else if (childConfig.margin.bottom) {
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child.bottom = targetSize.height - childConfig.margin.bottom - padding.bottom;
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}
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}
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}
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}
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@end
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@implementation DoricLinearView
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@end
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@implementation DoricVLayoutView
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- (CGSize)sizeThatFits:(CGSize)size {
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CGFloat contentWidth = 0;
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CGFloat contentHeight = 0;
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NSUInteger contentWeight = 0;
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for (UIView *child in self.subviews) {
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if (child.isHidden) {
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continue;
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}
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DoricLayoutConfig *childConfig = child.layoutConfig;
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if (!childConfig) {
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childConfig = [DoricLayoutConfig new];
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}
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CGSize childSize;
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if (CGAffineTransformEqualToTransform(child.transform, CGAffineTransformIdentity)) {
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childSize = [child measureSize:CGSizeMake(size.width, size.height - contentHeight)];
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} else {
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childSize = child.bounds.size;
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}
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contentWidth = MAX(contentWidth, childSize.width + childConfig.margin.left + childConfig.margin.right);
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contentHeight += childSize.height + self.space + childConfig.margin.top + childConfig.margin.bottom;
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contentWeight += childConfig.weight;
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}
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contentHeight -= self.space;
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self.contentWidth = contentWidth;
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self.contentHeight = contentHeight;
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self.contentWeight = contentWeight;
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if (contentWeight) {
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contentHeight = size.height;
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}
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return CGSizeMake(contentWidth, contentHeight);
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}
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- (void)layoutSelf:(CGSize)targetSize {
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self.width = targetSize.width;
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self.height = targetSize.height;
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DoricPadding padding = self.padding;
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CGFloat yStart = padding.top;
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if ((self.gravity & TOP) == TOP) {
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yStart = padding.top;
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} else if ((self.gravity & BOTTOM) == BOTTOM) {
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yStart = targetSize.height - self.contentHeight - padding.bottom;
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} else if ((self.gravity & CENTER_Y) == CENTER_Y) {
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yStart = (targetSize.height - self.contentHeight - padding.top - padding.bottom) / 2 + padding.top;
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}
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CGFloat remain = targetSize.height - self.contentHeight - padding.top - padding.bottom;
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for (UIView *child in self.subviews) {
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if (child.isHidden) {
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continue;
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}
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if (!CGAffineTransformEqualToTransform(child.transform, CGAffineTransformIdentity)) {
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continue;
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}
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DoricLayoutConfig *childConfig = child.layoutConfig;
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if (!childConfig) {
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childConfig = [DoricLayoutConfig new];
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}
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CGSize size = [child measureSize:CGSizeMake(
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targetSize.width - padding.left - padding.right,
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targetSize.height - yStart - padding.bottom)];
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if (childConfig.weight) {
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size.height += remain / self.contentWeight * childConfig.weight;
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}
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[child layoutSelf:size];
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DoricGravity gravity = childConfig.alignment | self.gravity;
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if ((gravity & LEFT) == LEFT) {
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child.left = padding.left;
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} else if ((gravity & RIGHT) == RIGHT) {
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child.right = self.width - padding.right;
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} else if ((gravity & CENTER_X) == CENTER_X) {
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child.centerX = targetSize.width / 2;
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} else if (childConfig.margin.left) {
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child.left = childConfig.margin.left + padding.left;
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} else if (childConfig.margin.right) {
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child.right = targetSize.width - childConfig.margin.right - padding.right;
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} else {
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child.left = padding.left;
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}
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if (childConfig.margin.top) {
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yStart += childConfig.margin.top;
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}
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child.top = yStart;
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yStart = child.bottom + self.space;
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if (childConfig.margin.bottom) {
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yStart += childConfig.margin.bottom;
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}
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}
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}
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@end
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@implementation DoricHLayoutView
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- (CGSize)sizeThatFits:(CGSize)size {
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CGFloat contentWidth = 0;
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CGFloat contentHeight = 0;
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NSUInteger contentWeight = 0;
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for (UIView *child in self.subviews) {
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if (child.isHidden) {
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continue;
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}
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DoricLayoutConfig *childConfig = child.layoutConfig;
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if (!childConfig) {
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childConfig = [DoricLayoutConfig new];
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}
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CGSize childSize;
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if (CGAffineTransformEqualToTransform(child.transform, CGAffineTransformIdentity)) {
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childSize = [child measureSize:CGSizeMake(size.width - contentWidth, size.height)];
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} else {
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childSize = child.bounds.size;
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}
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contentWidth += childSize.width + self.space + childConfig.margin.left + childConfig.margin.right;
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contentHeight = MAX(contentHeight, childSize.height + childConfig.margin.top + childConfig.margin.bottom);
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contentWeight += childConfig.weight;
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}
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if (self.subviews.count > 0) {
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contentWidth -= self.space;
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}
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self.contentWidth = contentWidth;
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self.contentHeight = contentHeight;
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self.contentWeight = contentWeight;
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if (contentWeight) {
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contentWidth = size.width;
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}
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return CGSizeMake(contentWidth, contentHeight);
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}
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- (void)layoutSelf:(CGSize)targetSize {
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self.width = targetSize.width;
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self.height = targetSize.height;
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DoricPadding padding = self.padding;
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CGFloat xStart = padding.left;
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if ((self.gravity & LEFT) == LEFT) {
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xStart = padding.left;
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} else if ((self.gravity & RIGHT) == RIGHT) {
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xStart = targetSize.width - self.contentWidth - padding.right;
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} else if ((self.gravity & CENTER_X) == CENTER_X) {
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xStart = (targetSize.width - self.contentWidth - padding.left - padding.right) / 2 + padding.left;
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}
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CGFloat remain = targetSize.width - self.contentWidth - padding.left - padding.right;
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for (UIView *child in self.subviews) {
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if (child.isHidden) {
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continue;
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}
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if (!CGAffineTransformEqualToTransform(child.transform, CGAffineTransformIdentity)) {
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continue;
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}
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DoricLayoutConfig *childConfig = child.layoutConfig;
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if (!childConfig) {
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childConfig = [DoricLayoutConfig new];
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}
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CGSize size = [child measureSize:CGSizeMake(
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targetSize.width - xStart - padding.right,
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targetSize.height - padding.top - padding.bottom)];
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if (childConfig.weight) {
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size.width += remain / self.contentWeight * childConfig.weight;
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}
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[child layoutSelf:size];
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DoricGravity gravity = childConfig.alignment | self.gravity;
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if ((gravity & TOP) == TOP) {
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child.top = padding.top;
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} else if ((gravity & BOTTOM) == BOTTOM) {
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child.bottom = targetSize.height - padding.bottom;
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} else if ((gravity & CENTER_Y) == CENTER_Y) {
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child.centerY = targetSize.height / 2;
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} else if (childConfig.margin.top) {
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child.top = childConfig.margin.top + padding.top;
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} else if (childConfig.margin.bottom) {
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child.bottom = targetSize.height - childConfig.margin.bottom - padding.bottom;
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} else {
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child.top = padding.top;
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}
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if (childConfig.margin.left) {
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xStart += childConfig.margin.left;
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}
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child.left = xStart;
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xStart = child.right + self.space;
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if (childConfig.margin.right) {
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xStart += childConfig.margin.right;
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}
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}
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}
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@end
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