Example usage for com.google.gwt.graphics.client Canvas getElement

Introduction

In this page you can find the example usage for com.google.gwt.graphics.client Canvas getElement.

Prototype

public Element getElement() 

Source Link

Usage

From source file:com.google.speedtracer.client.visualizations.view.EventTraceBreakdown.java

License:Apache License

public Element cloneRenderedCanvasElement() {
    ensureMasterIsRendered();/*w ww .  ja v  a 2s .com*/
    int width = (int) (rootEvent.getDuration() * domainToPixels);
    final Canvas canvas = new Canvas(width, COORD_HEIGHT);
    canvas.setLineWidth(2);
    final Element element = canvas.getElement();
    element.setClassName(resources.eventTraceBreakdownCss().masterRender());
    element.getStyle().setPropertyPx("width", width);
    new Renderer(canvas, rootEvent).renderSelfAndChildren();
    return element;
}

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From source file:com.google.speedtracer.client.visualizations.view.EventTraceBreakdown.java

License:Apache License

public Renderer createRenderer(UiEvent event, int depth) {
    ensureMasterIsRendered();/*from w  w  w. j a v  a  2s.  co m*/
    int width = (int) (event.getDuration() * domainToPixels);
    // We may have truncated something that, on aggregate may matter.
    // If this node has a dominant color set, then it contains a child that is
    // one of the important ones... show it with a 1 pixel bar.
    if (width == 0 && presenter.hasDominantType(event, rootEvent, domainToPixels)) {
        width = 1;
    }

    Css css = resources.eventTraceBreakdownCss();

    final Canvas canvas = new Canvas(width, COORD_HEIGHT);
    canvas.setLineWidth(2);
    final Element element = canvas.getElement();
    final Style style = element.getStyle();
    element.setClassName(css.eventGraph());
    style.setPropertyPx("left", getLeftOffset(event, depth));
    style.setPropertyPx("width", width);

    return new Renderer(canvas, event);
}

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From source file:com.google.speedtracer.client.visualizations.view.EventTraceBreakdown.java

License:Apache License

private void ensureMasterIsRendered() {
    if (masterCanvasElement != null) {
        return;/* w w  w.  ja v a2s.  c o m*/
    }

    // See comment in renderNode.
    final JsIntegerDoubleMap accumlatedErrorByType = JsIntegerDoubleMap.create();
    final Canvas canvas = new Canvas(MASTER_COORD_WIDTH, COORD_HEIGHT);
    traverseAndRender(canvas, null, rootEvent, accumlatedErrorByType);
    masterCanvasElement = canvas.getElement();
}

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