586 lines
21 KiB
Objective-C
586 lines
21 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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#import "DoricExtensions.h"
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void DoricAddEllipticArcPath(CGMutablePathRef path,
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CGPoint origin,
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CGFloat radius,
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CGFloat startAngle,
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CGFloat endAngle) {
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CGAffineTransform t = CGAffineTransformMakeTranslation(origin.x, origin.y);
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CGPathAddArc(path, &t, 0, 0, radius, startAngle, endAngle, NO);
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}
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CGPathRef DoricCreateRoundedRectPath(CGRect bounds,
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CGFloat leftTop,
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CGFloat rightTop,
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CGFloat rightBottom,
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CGFloat leftBottom) {
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const CGFloat minX = CGRectGetMinX(bounds);
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const CGFloat minY = CGRectGetMinY(bounds);
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const CGFloat maxX = CGRectGetMaxX(bounds);
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const CGFloat maxY = CGRectGetMaxY(bounds);
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CGMutablePathRef path = CGPathCreateMutable();
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DoricAddEllipticArcPath(path, (CGPoint) {
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minX + leftTop, minY + leftTop
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}, leftTop, M_PI, 3 * M_PI_2);
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DoricAddEllipticArcPath(path, (CGPoint) {
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maxX - rightTop, minY + rightTop
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}, rightTop, 3 * M_PI_2, 0);
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DoricAddEllipticArcPath(path, (CGPoint) {
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maxX - rightBottom, maxY - rightBottom
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}, rightBottom, 0, M_PI_2);
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DoricAddEllipticArcPath(path, (CGPoint) {
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minX + leftBottom, maxY - leftBottom
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}, leftBottom, M_PI_2, M_PI);
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CGPathCloseSubpath(path);
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return path;
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}
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static const void *kLayoutConfig = &kLayoutConfig;
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@implementation UIView (DoricLayout)
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@dynamic doricLayout;
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- (void)setDoricLayout:(DoricLayout *)doricLayout {
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objc_setAssociatedObject(self, kLayoutConfig, doricLayout, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
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}
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- (DoricLayout *)doricLayout {
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DoricLayout *layout = objc_getAssociatedObject(self, kLayoutConfig);
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if (!layout) {
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layout = [DoricLayout new];
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layout.width = self.width;
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layout.height = self.height;
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layout.view = self;
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self.doricLayout = layout;
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}
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return layout;
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}
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@end
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@interface DoricLayout ()
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@end
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@implementation DoricLayout
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- (instancetype)init {
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if (self = [super init]) {
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_widthSpec = DoricLayoutJust;
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_heightSpec = DoricLayoutJust;
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_maxWidth = CGFLOAT_MAX;
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_maxHeight = CGFLOAT_MAX;
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_minWidth = CGFLOAT_MIN;
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_minHeight = CGFLOAT_MIN;
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}
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return self;
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}
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- (void)setMeasuredWidth:(CGFloat)measuredWidth {
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_measuredWidth = MAX(0, measuredWidth);
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}
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- (void)setMeasuredHeight:(CGFloat)measuredHeight {
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_measuredHeight = MAX(0, measuredHeight);
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}
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- (void)apply:(CGSize)frameSize {
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self.resolved = NO;
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[self measure:frameSize];
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[self setFrame];
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self.resolved = YES;
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}
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- (void)apply {
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[self apply:self.view.frame.size];
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}
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- (void)measure:(CGSize)targetSize {
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[self measureSelf:targetSize];
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[self layout];
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}
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- (void)measureSelf:(CGSize)targetSize {
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CGFloat width;
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CGFloat height;
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if (self.widthSpec == DoricLayoutMost) {
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if (self.view.superview.doricLayout.widthSpec == DoricLayoutFit) {
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width = targetSize.width;
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} else if (self.view.superview.doricLayout.layoutType == DoricHLayout && self.weight > 0) {
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width = self.measuredWidth = 0;
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} else {
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width = self.measuredWidth = targetSize.width;
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}
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} else if (self.widthSpec == DoricLayoutJust) {
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width = self.measuredWidth = self.width;
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} else {
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width = targetSize.width;
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}
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if (self.heightSpec == DoricLayoutMost) {
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if (self.view.superview.doricLayout.layoutType == DoricVLayout && self.weight > 0) {
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height = self.measuredHeight = 0;
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} else {
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height = self.measuredHeight = targetSize.height;
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}
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} else if (self.heightSpec == DoricLayoutJust) {
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height = self.measuredHeight = self.height;
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} else {
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height = targetSize.height;
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}
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[self measureContent:CGSizeMake(
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width - self.paddingLeft - self.paddingRight,
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height - self.paddingTop - self.paddingBottom)];
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if ([self restrainSize]) {
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[self measureContent:CGSizeMake(
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self.measuredWidth - self.paddingLeft - self.paddingRight,
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self.measuredHeight - self.paddingTop - self.paddingBottom)];
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}
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[self restrainSize];
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}
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- (BOOL)restrainSize {
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BOOL needRemeasure = NO;
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if (self.measuredWidth > self.maxWidth) {
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self.measuredWidth = self.maxWidth;
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needRemeasure = YES;
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}
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if (self.measuredHeight > self.maxHeight) {
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self.measuredHeight = self.maxHeight;
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needRemeasure = YES;
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}
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if (self.measuredWidth < self.minWidth) {
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self.measuredWidth = self.minWidth;
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needRemeasure = YES;
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}
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if (self.measuredHeight < self.minHeight) {
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self.measuredHeight = self.minHeight;
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needRemeasure = YES;
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}
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return needRemeasure;
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}
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- (void)measureContent:(CGSize)targetSize {
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switch (self.layoutType) {
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case DoricStack: {
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[self measureStackContent:targetSize];
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break;
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}
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case DoricVLayout: {
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[self measureVLayoutContent:targetSize];
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break;
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}
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case DoricHLayout: {
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[self measureHLayoutContent:targetSize];
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break;
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}
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default: {
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[self measureUndefinedContent:targetSize];
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break;
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}
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}
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if (self.view.superview.doricLayout.widthSpec == DoricLayoutFit && self.widthSpec == DoricLayoutMost) {
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self.measuredWidth = self.contentWidth + self.paddingLeft + self.paddingRight;
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}
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if (self.view.superview.doricLayout.heightSpec == DoricLayoutFit && self.heightSpec == DoricLayoutMost) {
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self.measuredHeight = self.contentHeight + self.paddingTop + self.paddingBottom;
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}
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}
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- (void)layout {
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switch (self.layoutType) {
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case DoricStack: {
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[self layoutStack];
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break;
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}
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case DoricVLayout: {
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[self layoutVLayout];
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break;
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}
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case DoricHLayout: {
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[self layoutHLayout];
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break;
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}
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default: {
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break;
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}
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}
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}
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- (BOOL)rect:(CGRect)rect1 equalTo:(CGRect)rect2 {
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return ABS(rect1.origin.x - rect2.origin.x) < 0.00001f
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&& ABS(rect1.origin.y - rect2.origin.y) < 0.00001f
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&& ABS(rect1.size.width - rect2.size.width) < 0.00001f
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&& ABS(rect1.size.height - rect2.size.height) < 0.00001f;
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}
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- (void)setFrame {
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if (self.layoutType != DoricUndefined) {
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[self.view.subviews forEach:^(__kindof UIView *obj) {
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[obj.doricLayout setFrame];
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}];
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}
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CGRect originFrame = CGRectMake(self.measuredX, self.measuredY, self.measuredWidth, self.measuredHeight);
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if (!CGAffineTransformEqualToTransform(self.view.transform, CGAffineTransformIdentity)) {
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CGPoint anchor = self.view.layer.anchorPoint;
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originFrame = CGRectOffset(originFrame, -anchor.x * self.measuredWidth - self.measuredX, -anchor.y * self.measuredHeight - self.measuredY);
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originFrame = CGRectApplyAffineTransform(originFrame, self.view.transform);
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originFrame = CGRectOffset(originFrame, anchor.x * self.measuredWidth + self.measuredX, anchor.y * self.measuredHeight + self.measuredY);
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}
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if (![self rect:originFrame equalTo:self.view.frame]) {
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self.view.frame = originFrame;
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if (!UIEdgeInsetsEqualToEdgeInsets(self.corners, UIEdgeInsetsZero)) {
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CAShapeLayer *shapeLayer = [CAShapeLayer layer];
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CGPathRef path = DoricCreateRoundedRectPath(self.view.bounds,
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self.corners.top, self.corners.left, self.corners.bottom, self.corners.right);
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shapeLayer.path = path;
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CGPathRelease(path);
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self.view.layer.mask = shapeLayer;
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}
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}
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}
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- (void)measureUndefinedContent:(CGSize)targetSize {
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CGSize measuredSize = [self.view sizeThatFits:targetSize];
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if (self.widthSpec == DoricLayoutFit) {
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if ([self.view isKindOfClass:[UIImageView class]]
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&& self.heightSpec != DoricLayoutFit && measuredSize.height > 0) {
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self.measuredWidth = measuredSize.width / measuredSize.height * self.measuredHeight
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+ self.paddingLeft + self.paddingRight;
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} else {
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self.measuredWidth = measuredSize.width + self.paddingLeft + self.paddingRight;
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}
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}
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if (self.heightSpec == DoricLayoutFit) {
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if ([self.view isKindOfClass:[UIImageView class]]
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&& self.widthSpec != DoricLayoutFit && measuredSize.width > 0) {
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self.measuredHeight = measuredSize.height / measuredSize.width * self.measuredWidth
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+ self.paddingTop + self.paddingBottom;
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} else {
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self.measuredHeight = measuredSize.height + self.paddingTop + self.paddingBottom;
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}
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}
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self.contentWidth = measuredSize.width;
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self.contentHeight = measuredSize.height;
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}
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- (CGFloat)takenWidth {
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return self.measuredWidth + self.marginLeft + self.marginRight;
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}
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- (CGFloat)takenHeight {
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return self.measuredHeight + self.marginTop + self.marginBottom;
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}
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- (CGSize)removeMargin:(CGSize)targetSize {
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return CGSizeMake(
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targetSize.width - self.marginLeft - self.marginRight,
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targetSize.height - self.marginTop - self.marginBottom);
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}
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- (void)measureStackContent:(CGSize)targetSize {
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CGFloat contentWidth = 0, contentHeight = 0;
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for (__kindof UIView *subview in self.view.subviews) {
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DoricLayout *layout = subview.doricLayout;
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if (layout.disabled) {
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continue;
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}
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[layout measure:[layout removeMargin:targetSize]];
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contentWidth = MAX(contentWidth, layout.takenWidth);
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contentHeight = MAX(contentHeight, layout.takenHeight);
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}
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if (self.widthSpec == DoricLayoutFit) {
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self.measuredWidth = contentWidth + self.paddingLeft + self.paddingRight;
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}
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if (self.heightSpec == DoricLayoutFit) {
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self.measuredHeight = contentHeight + self.paddingTop + self.paddingBottom;
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}
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self.contentWidth = contentWidth;
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self.contentHeight = contentHeight;
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}
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- (void)measureVLayoutContent:(CGSize)targetSize {
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CGFloat contentWidth = 0, contentHeight = 0, contentWeight = 0;
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BOOL had = NO;
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for (__kindof UIView *subview in self.view.subviews) {
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DoricLayout *layout = subview.doricLayout;
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if (layout.disabled) {
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continue;
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}
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had = YES;
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[layout measure:[layout removeMargin:CGSizeMake(targetSize.width, targetSize.height - contentHeight)]];
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contentWidth = MAX(contentWidth, layout.takenWidth);
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contentHeight += layout.takenHeight + self.spacing;
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contentWeight += layout.weight;
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}
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if (had) {
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contentHeight -= self.spacing;
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}
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if (contentWeight > 0) {
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CGFloat remaining = targetSize.height - contentHeight;
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contentWidth = 0;
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contentHeight = 0;
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had = NO;
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for (__kindof UIView *subview in self.view.subviews) {
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DoricLayout *layout = subview.doricLayout;
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if (layout.disabled) {
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continue;
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}
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had = YES;
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CGFloat measuredHeight = layout.measuredHeight + remaining / contentWeight * layout.weight;
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layout.measuredHeight = measuredHeight;
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//Need Remeasure
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[layout measureContent:CGSizeMake(
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layout.measuredWidth - layout.paddingLeft - layout.paddingRight,
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measuredHeight - layout.paddingTop - layout.paddingBottom)];
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layout.measuredHeight = measuredHeight;
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contentWidth = MAX(contentWidth, layout.takenWidth);
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contentHeight += layout.takenHeight + self.spacing;
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}
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if (had) {
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contentHeight -= self.spacing;
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}
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}
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if (self.widthSpec == DoricLayoutFit) {
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self.measuredWidth = contentWidth + self.paddingLeft + self.paddingRight;
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}
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if (self.heightSpec == DoricLayoutFit) {
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self.measuredHeight = contentHeight + self.paddingTop + self.paddingBottom;
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}
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self.contentWidth = contentWidth;
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self.contentHeight = contentHeight;
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}
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- (void)measureHLayoutContent:(CGSize)targetSize {
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CGFloat contentWidth = 0, contentHeight = 0, contentWeight = 0;;
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BOOL had = NO;
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for (__kindof UIView *subview in self.view.subviews) {
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DoricLayout *layout = subview.doricLayout;
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if (layout.disabled) {
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continue;
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}
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had = YES;
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[layout measure:[layout removeMargin:CGSizeMake(targetSize.width - contentWidth, targetSize.height)]];
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contentWidth += layout.takenWidth + self.spacing;
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contentHeight = MAX(contentHeight, layout.takenHeight);
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contentWeight += layout.weight;
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}
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if (had) {
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contentWidth -= self.spacing;
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}
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if (contentWeight > 0) {
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CGFloat remaining = targetSize.width - contentWidth;
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contentWidth = 0;
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contentHeight = 0;
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had = NO;
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for (__kindof UIView *subview in self.view.subviews) {
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DoricLayout *layout = subview.doricLayout;
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if (layout.disabled) {
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continue;
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}
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had = YES;
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CGFloat measuredWidth = layout.measuredWidth + remaining / contentWeight * layout.weight;
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layout.measuredWidth = measuredWidth;
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//Need Remeasure
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[layout measureContent:CGSizeMake(
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measuredWidth - layout.paddingLeft - layout.paddingRight,
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layout.measuredHeight - layout.paddingTop - layout.paddingBottom)];
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layout.measuredWidth = measuredWidth;
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contentWidth += layout.takenWidth + self.spacing;
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contentHeight = MAX(contentHeight, layout.takenHeight);
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}
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if (had) {
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contentWidth -= self.spacing;
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}
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}
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if (self.widthSpec == DoricLayoutFit) {
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self.measuredWidth = contentWidth + self.paddingLeft + self.paddingRight;
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}
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if (self.heightSpec == DoricLayoutFit) {
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self.measuredHeight = contentHeight + self.paddingTop + self.paddingBottom;
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}
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self.contentWidth = contentWidth;
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self.contentHeight = contentHeight;
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}
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- (void)layoutStack {
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for (__kindof UIView *subview in self.view.subviews) {
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DoricLayout *layout = subview.doricLayout;
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if (layout.disabled) {
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continue;
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}
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if (self.widthSpec == DoricLayoutFit && layout.widthSpec == DoricLayoutMost) {
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layout.measuredWidth = self.contentWidth - layout.marginLeft - layout.marginRight;
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}
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if (self.heightSpec == DoricLayoutFit && layout.heightSpec == DoricLayoutMost) {
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layout.measuredHeight = self.contentHeight - layout.marginTop - layout.marginBottom;
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}
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[layout layout];
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DoricGravity gravity = layout.alignment;
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if ((gravity & DoricGravityLeft) == DoricGravityLeft) {
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layout.measuredX = self.paddingLeft;
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} else if ((gravity & DoricGravityRight) == DoricGravityRight) {
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layout.measuredX = self.measuredWidth - self.paddingRight - layout.measuredWidth;
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} else if ((gravity & DoricGravityCenterX) == DoricGravityCenterX) {
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layout.measuredX = self.measuredWidth / 2 - layout.measuredWidth / 2;
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} else {
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layout.measuredX = self.paddingLeft;
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}
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if ((gravity & DoricGravityTop) == DoricGravityTop) {
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layout.measuredY = self.paddingTop;
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} else if ((gravity & DoricGravityBottom) == DoricGravityBottom) {
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layout.measuredY = self.measuredHeight - self.paddingBottom - layout.measuredHeight;
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} else if ((gravity & DoricGravityCenterY) == DoricGravityCenterY) {
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layout.measuredY = self.measuredHeight / 2 - layout.measuredHeight / 2;
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} else {
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layout.measuredY = self.paddingTop;
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}
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if (!gravity) {
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gravity = DoricGravityLeft | DoricGravityTop;
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}
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if (layout.marginLeft && !((gravity & DoricGravityRight) == DoricGravityRight)) {
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layout.measuredX += layout.marginLeft;
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}
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if (layout.marginRight && !((gravity & DoricGravityLeft) == DoricGravityLeft)) {
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layout.measuredX -= layout.marginRight;
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}
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if (layout.marginTop && !((gravity & DoricGravityBottom) == DoricGravityBottom)) {
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layout.measuredY += layout.marginTop;
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}
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if (layout.marginBottom && !((gravity & DoricGravityTop) == DoricGravityTop)) {
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layout.measuredY -= layout.marginBottom;
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}
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}
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}
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- (void)layoutVLayout {
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CGFloat yStart = self.paddingTop;
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if ((self.gravity & DoricGravityTop) == DoricGravityTop) {
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yStart = self.paddingTop;
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} else if ((self.gravity & DoricGravityBottom) == DoricGravityBottom) {
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yStart = self.measuredHeight - self.contentHeight - self.paddingBottom;
|
|
} else if ((self.gravity & DoricGravityCenterY) == DoricGravityCenterY) {
|
|
yStart = (self.measuredHeight - self.contentHeight - self.paddingTop - self.paddingBottom) / 2 + self.paddingTop;
|
|
}
|
|
for (UIView *child in self.view.subviews) {
|
|
DoricLayout *layout = child.doricLayout;
|
|
if (layout.disabled) {
|
|
continue;
|
|
}
|
|
if (self.widthSpec == DoricLayoutFit && layout.widthSpec == DoricLayoutMost) {
|
|
layout.measuredWidth = self.contentWidth - layout.marginLeft - layout.marginRight;
|
|
}
|
|
[layout layout];
|
|
DoricGravity gravity = layout.alignment | self.gravity;
|
|
if ((gravity & DoricGravityLeft) == DoricGravityLeft) {
|
|
layout.measuredX = self.paddingLeft;
|
|
} else if ((gravity & DoricGravityRight) == DoricGravityRight) {
|
|
layout.measuredX = self.measuredWidth - self.paddingRight - layout.measuredWidth;
|
|
} else if ((gravity & DoricGravityCenterX) == DoricGravityCenterX) {
|
|
layout.measuredX = self.measuredWidth / 2 - layout.measuredWidth / 2;
|
|
} else {
|
|
layout.measuredX = self.paddingLeft;
|
|
}
|
|
if (!gravity) {
|
|
gravity = DoricGravityLeft;
|
|
}
|
|
if (layout.marginLeft && !((gravity & DoricGravityRight) == DoricGravityRight)) {
|
|
layout.measuredX += layout.marginLeft;
|
|
}
|
|
if (layout.marginRight && !((gravity & DoricGravityLeft) == DoricGravityLeft)) {
|
|
layout.measuredX -= layout.marginRight;
|
|
}
|
|
layout.measuredY = yStart + layout.marginTop;
|
|
yStart += self.spacing + layout.takenHeight;
|
|
}
|
|
}
|
|
|
|
- (void)layoutHLayout {
|
|
CGFloat xStart = self.paddingLeft;
|
|
if ((self.gravity & DoricGravityLeft) == DoricGravityLeft) {
|
|
xStart = self.paddingLeft;
|
|
} else if ((self.gravity & DoricGravityRight) == DoricGravityRight) {
|
|
xStart = self.measuredWidth - self.contentWidth - self.paddingRight;
|
|
} else if ((self.gravity & DoricGravityCenterX) == DoricGravityCenterX) {
|
|
xStart = (self.measuredWidth - self.contentWidth - self.paddingLeft - self.paddingRight) / 2 + self.paddingLeft;
|
|
}
|
|
for (UIView *child in self.view.subviews) {
|
|
DoricLayout *layout = child.doricLayout;
|
|
if (layout.disabled) {
|
|
continue;
|
|
}
|
|
|
|
if (self.heightSpec == DoricLayoutFit && layout.heightSpec == DoricLayoutMost) {
|
|
layout.measuredHeight = self.contentHeight - layout.marginTop - layout.marginBottom;
|
|
}
|
|
|
|
[layout layout];
|
|
|
|
DoricGravity gravity = layout.alignment | self.gravity;
|
|
if ((gravity & DoricGravityTop) == DoricGravityTop) {
|
|
layout.measuredY = self.paddingTop;
|
|
} else if ((gravity & DoricGravityBottom) == DoricGravityBottom) {
|
|
layout.measuredY = self.measuredHeight - self.paddingBottom - layout.measuredHeight;
|
|
} else if ((gravity & DoricGravityCenterY) == DoricGravityCenterY) {
|
|
layout.measuredY = self.measuredHeight / 2 - layout.measuredHeight / 2;
|
|
} else {
|
|
layout.measuredY = self.paddingTop;
|
|
}
|
|
if (!gravity) {
|
|
gravity = DoricGravityTop;
|
|
}
|
|
if (layout.marginTop && !((gravity & DoricGravityBottom) == DoricGravityBottom)) {
|
|
layout.measuredY += layout.marginTop;
|
|
}
|
|
if (layout.marginBottom && !((gravity & DoricGravityTop) == DoricGravityTop)) {
|
|
layout.measuredY -= layout.marginBottom;
|
|
}
|
|
layout.measuredX = xStart + layout.marginLeft;
|
|
xStart += self.spacing + layout.takenWidth;
|
|
}
|
|
}
|
|
|
|
@end
|