627aeff31a
Enabling/disabling of handling multiple pointers Adds basic touch handling R=abarth@chromium.org Review URL: https://codereview.chromium.org/1179413009.
34 lines
857 B
Dart
34 lines
857 B
Dart
part of sprites;
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abstract class NodeWithSize extends Node {
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Size size;
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Point pivot;
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NodeWithSize() {
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size = Size.zero;
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pivot = Point.origin;
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}
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NodeWithSize.withSize(Size this.size, [Point this.pivot]) {
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if (pivot == null) pivot = Point.origin;
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}
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void applyTransformForPivot(PictureRecorder canvas) {
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if (pivot.x != 0 || pivot.y != 0) {
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double pivotInPointsX = size.width * pivot.x;
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double pivotInPointsY = size.height * pivot.y;
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canvas.translate(-pivotInPointsX, -pivotInPointsY);
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}
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}
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bool hitTest (Point nodePoint) {
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double minX = -size.width * pivot.x;
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double minY = -size.height * pivot.y;
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double maxX = minX + size.width;
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double maxY = minY + size.height;
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return (nodePoint.x >= minX && nodePoint.x < maxX &&
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nodePoint.y >= minY && nodePoint.y < maxY);
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}
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}
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