168 lines
3.3 KiB
Dart
168 lines
3.3 KiB
Dart
/// Created by @Haoyi on 2021/7/7
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part of "design.dart";
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abstract class DesignRect extends DesignObject<Rect> {
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Rect get rect;
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double get width;
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double get height;
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Offset get topLeft;
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Offset get bottomLeft;
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Offset get topRight;
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Offset get bottomRight;
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Offset get center;
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double get top;
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double get bottom;
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double get right;
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double get left;
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DesignField get topField;
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DesignField get leftField;
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DesignField get rightField;
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DesignField get bottomField;
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}
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class _DesignFieldRect extends DesignRect {
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final DesignField leftField;
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final DesignField topField;
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final DesignField rightField;
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final DesignField bottomField;
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Rect? _rect;
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Rect get rect => _rect!;
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_DesignFieldRect.fromLTRB(this.leftField, this.topField, this.rightField, this.bottomField);
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@override
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double get width => rect.width;
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@override
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double get height => rect.height;
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@override
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Offset get topLeft => rect.topLeft;
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@override
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Offset get bottomLeft => rect.bottomLeft;
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@override
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Offset get topRight => rect.topRight;
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@override
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Offset get bottomRight => rect.bottomRight;
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@override
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Offset get center => rect.center;
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@override
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double get top => rect.top;
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@override
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double get bottom => rect.bottom;
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@override
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double get right => rect.right;
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@override
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double get left => rect.left;
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@override
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Rect measure(_DeviceMetrics metrics) {
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if (_rect == null) {
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final l = leftField.measure(metrics);
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final t = topField.measure(metrics);
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final r = rightField.measure(metrics);
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final b = bottomField.measure(metrics);
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_rect = Rect.fromLTRB(l, t, r, b);
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}
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return _rect!;
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}
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}
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class _DesignExplicitRect extends DesignRect {
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final double designLeft;
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final double designTop;
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final double designRight;
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final double designBottom;
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Rect? _rect;
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@override
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Rect get rect => _rect!;
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_DesignExplicitRect.fromLTRB(
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this.designLeft, this.designTop, this.designRight, this.designBottom);
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@override
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double get width => rect.width;
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@override
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double get height => rect.height;
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@override
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Offset get topLeft => rect.topLeft;
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@override
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Offset get bottomLeft => rect.bottomLeft;
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@override
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Offset get topRight => rect.topRight;
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@override
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Offset get bottomRight => rect.bottomRight;
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@override
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Offset get center => rect.center;
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@override
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DesignField get bottomField => DesignField._height(designBottom);
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@override
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DesignField get leftField => DesignField._width(designLeft);
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@override
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DesignField get rightField => DesignField._width(designRight);
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@override
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DesignField get topField => DesignField._height(designTop);
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@override
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double get top => rect.top;
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@override
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double get bottom => rect.bottom;
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@override
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double get right => rect.right;
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@override
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double get left => rect.left;
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@override
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Rect measure(_DeviceMetrics metrics) {
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if (_rect == null) {
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final l = DesignField._calculate(_DesignMethod.width, metrics, designLeft);
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final t = DesignField._calculate(_DesignMethod.height, metrics, designTop);
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final r = DesignField._calculate(_DesignMethod.width, metrics, designRight);
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final b = DesignField._calculate(_DesignMethod.height, metrics, designBottom);
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_rect = Rect.fromLTRB(l, t, r, b);
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}
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return _rect!;
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}
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}
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