86 lines
2.6 KiB
Objective-C
86 lines
2.6 KiB
Objective-C
//
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// DoricVLayoutNode.m
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// Doric
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//
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// Created by pengfei.zhou on 2019/7/30.
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//
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#import "DoricVLayoutNode.h"
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@implementation DoricVLayoutNode
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- (instancetype)init {
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if (self = [super init]) {
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_space = 0;
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_gravity = 0;
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}
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return self;
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}
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- (void)measureByParent:(DoricGroupNode *)parent {
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DoricLayoutDesc widthSpec = self.layoutParams.width;
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DoricLayoutDesc heightSpec = self.layoutParams.height;
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CGFloat maxWidth = 0,maxHeight = 0;
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for (DoricViewNode *child in self.indexedChildren) {
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[child measureByParent:self];
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UIView *childView = child.view;
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CGFloat placeWidth = childView.width + child.layoutParams.margin.left + child.layoutParams.margin.right;
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CGFloat placeHeight = childView.height + child.layoutParams.margin.top + child.layoutParams.margin.bottom;
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maxWidth = MAX(maxWidth, placeWidth);
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maxHeight += placeHeight + self.space;
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}
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maxHeight -= self.space;
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self.desiredWidth = maxWidth;
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self.desiredHeight = maxHeight;
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if (widthSpec == LAYOUT_WRAP_CONTENT) {
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self.view.width = maxWidth;
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}
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if (heightSpec == LAYOUT_WRAP_CONTENT) {
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self.view.height = maxHeight;
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}
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}
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- (void)layoutByParent:(DoricGroupNode *)parent {
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if (self.layoutParams.width == LAYOUT_MATCH_PARENT) {
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self.view.width = parent.view.width;
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}
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if (self.layoutParams.height == LAYOUT_MATCH_PARENT) {
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self.view.height = parent.view.height;
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}
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CGFloat start = 0;
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for (DoricViewNode *child in self.indexedChildren) {
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[child measureByParent:self];
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UIView *childView = child.view;
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if (child.layoutParams.width == LAYOUT_MATCH_PARENT) {
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childView.width = self.view.width;
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}
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if (child.layoutParams.height == LAYOUT_MATCH_PARENT) {
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childView.height = self.view.height;
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}
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DoricGravity gravity = self.layoutParams.alignment;
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if ((gravity & LEFT) == LEFT) {
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childView.left = self.view.left;
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}
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if ((gravity & RIGHT) == RIGHT) {
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childView.right = self.view.right;
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}
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if ((gravity & TOP) == TOP) {
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childView.top = self.view.top;
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}
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if ((gravity & BOTTOM) == BOTTOM) {
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childView.bottom = self.view.bottom;
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}
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if ((gravity & CENTER_X) == CENTER_X) {
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childView.centerX = self.view.centerX;
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}
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if ((gravity & CENTER_Y) == CENTER_Y) {
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childView.centerY = self.view.centerY;
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}
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childView.top = start;
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start = childView.bottom + self.space;
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}
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}
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@end
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