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903ef07abb
This CL splits getIntrinsicDimensions into getMinIntrinsicWidth, getMaxIntrinsicWidth, getMinIntrinsicHeight, and getMaxIntrinsicHeight so that we can properly shrink-wrap the stocks app menu. This CL just contains the refactoring. The use in stocks app will come in a later CL. R=ianh@google.com Review URL: https://codereview.chromium.org/1167293003
87 lines
2.6 KiB
Dart
87 lines
2.6 KiB
Dart
// Copyright 2015 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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import 'dart:sky' as sky;
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import 'box.dart';
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import 'object.dart';
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class RenderInline extends RenderObject {
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String data;
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RenderInline(this.data);
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}
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class RenderParagraph extends RenderBox {
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RenderParagraph({
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String text,
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Color color
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}) : _color = color {
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_layoutRoot.rootElement = _document.createElement('p');
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this.text = text;
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}
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final sky.Document _document = new sky.Document();
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final sky.LayoutRoot _layoutRoot = new sky.LayoutRoot();
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String get text => (_layoutRoot.rootElement.firstChild as sky.Text).data;
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void set text (String value) {
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_layoutRoot.rootElement.setChild(_document.createText(value));
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markNeedsLayout();
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}
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Color _color = const Color(0xFF000000);
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Color get color => _color;
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void set color (Color value) {
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if (_color != value) {
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_color = value;
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markNeedsPaint();
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}
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}
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// We don't currently support this for RenderParagraph
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double getMinIntrinsicWidth(BoxConstraints constraints) {
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assert(false);
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return constraints.constrainWidth(0.0);
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}
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// We don't currently support this for RenderParagraph
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double getMaxIntrinsicWidth(BoxConstraints constraints) {
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assert(false);
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return constraints.constrainWidth(0.0);
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}
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// We don't currently support this for RenderParagraph
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double getMinIntrinsicHeight(BoxConstraints constraints) {
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assert(false);
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return constraints.constrainHeight(0.0);
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}
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// We don't currently support this for RenderParagraph
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double getMaxIntrinsicHeight(BoxConstraints constraints) {
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assert(false);
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return constraints.constrainHeight(0.0);
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}
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void performLayout() {
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_layoutRoot.maxWidth = constraints.maxWidth;
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_layoutRoot.minWidth = constraints.minWidth;
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_layoutRoot.minHeight = constraints.minHeight;
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_layoutRoot.maxHeight = constraints.maxHeight;
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_layoutRoot.layout();
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// rootElement.width always expands to fill, use maxContentWidth instead.
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sky.Element root = _layoutRoot.rootElement;
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size = constraints.constrain(new Size(root.maxContentWidth, root.height));
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}
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void paint(RenderObjectDisplayList canvas) {
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// _layoutRoot.rootElement.style['color'] = 'rgba(' + ...color... + ')';
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_layoutRoot.paint(canvas);
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}
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// we should probably expose a way to do precise (inter-glpyh) hit testing
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String debugDescribeSettings(String prefix) => '${super.debugDescribeSettings(prefix)}${prefix}color: ${color}\n${prefix}text: ${text}\n';
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}
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