Package gwt.g2d.client.graphics.shapes

Examples of gwt.g2d.client.graphics.shapes.ShapeBuilder

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  /**
   * Draws onto the surface using {@link ShapeBuilder}.
   */
  private void drawWithShapeBuilder(Surface surface) {
    surface.strokeShape(new ShapeBuilder()
        .drawLineSegment(40, 20, 180, 20)
        .drawQuadraticCurveTo(200, 20, 200, 40)
        .drawLineTo(200, 180)
        .drawQuadraticCurveTo(200, 200, 180, 200)
        .drawLineTo(40, 200)
        .drawQuadraticCurveTo(20, 200, 20, 180)
        .drawLineTo(20, 40)
        .drawQuadraticCurveTo(20, 20, 40, 20)
        .moveTo(50, 50)
        .drawArc(50, 50, 15, (float) Math.toRadians(30), (float) Math.toRadians(-30), false)
        .build());
    surface.strokeShape(new ShapeBuilder()
        .drawEllipse(20, 100, 180, 100)
        .build());
    ShapeBuilder dotShapeBuilder = new ShapeBuilder();
    for (int i = 0; i < 8; i++) {
      dotShapeBuilder.drawCircle(80 + i * 12, 50, 1);
    }
    surface.fillShape(dotShapeBuilder.build());
  }
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  public void initialize() {
    add(new Label("This demo does not work under IE."));
    Surface originalCanvas = new Surface(300, 300);
    Circle smallCircle = new Circle(150, 150, 140);
    Circle bigCircle = new Circle(150, 150, 150);
    Shape smallCircleShape = new ShapeBuilder().drawCircle(smallCircle).build();
    Shape bigCircleShape = new ShapeBuilder().drawCircle(bigCircle).build();
    Gradient radialGradient = new RadialGradient(new Circle(150, 150, 0), smallCircle)
        .addColorStop(0, KnownColor.RED)
        .addColorStop(1, KnownColor.GREEN);
    originalCanvas.setFillStyle(KnownColor.BLACK)
        .fillShape(bigCircleShape)
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      if (isLeftButtonDown) {
        surface.setStrokeStyle(KnownColor.BLACK).setLineWidth(5);
      } else if (isRightButtonDown) {
        surface.setStrokeStyle(KnownColor.WHITE).setLineWidth(20);
      }
      surface.strokeShape(new ShapeBuilder()
          .drawLineSegment(lastPosition, new Vector2(event.getX(), event.getY()))
          .build());
      surface.restore();
      lastPosition.set(event.getX(), event.getY());
    }   
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  }

  private void drawStar(double r) {
    Surface surface = getPrimarySurface();
    surface.save();
    ShapeBuilder shapeBuilder = new ShapeBuilder().moveTo(r, 0);
    for (int i = 0; i < 9; i++) {
      shapeBuilder.rotate(Math.PI / 5);
      if (i % 2 == 0) {
        shapeBuilder.drawLineTo((r / 0.525731) * 0.200811, 0);
      } else {
        shapeBuilder.drawLineTo(r, 0);
      }
    }
    surface.fillShape(shapeBuilder.build())
        .restore();
  }
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Related Classes of gwt.g2d.client.graphics.shapes.ShapeBuilder

  • com.google.gwt.canvas.dom.client.Context2d
  • gwt.g2d.client.demo.CanvasOnCanvasDemo
  • gwt.g2d.client.demo.ClippingDemo
  • gwt.g2d.client.demo.DrawingPadDemo
  • gwt.g2d.client.demo.ShapeDemo
  • gwt.g2d.client.graphics.canvas.Context
  • gwt.g2d.client.graphics.visitor.ArcToVisitor
  • gwt.g2d.client.graphics.visitor.ArcVisitor
  • gwt.g2d.client.graphics.visitor.BezierCurveToVisitor
  • gwt.g2d.client.graphics.visitor.BezierCurveVisitor
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