Examples with Context2D com.ait.lienzo.client.core.Context2D used on opensource projects

Example 11 with Context2D

use of com.ait.lienzo.client.core.Context2D in project lienzo-core by ahome-it.

the class Text method fill.

@Override
protected boolean fill(final Context2D context, final Attributes attr, double alpha) {
    final boolean filled = attr.hasFill();
    if ((filled) || (attr.isFillShapeForSelection())) {
        alpha = alpha * attr.getFillAlpha();
        if (alpha <= 0) {
            return false;
        }
        if (context.isSelection()) {
            final String color = getColorKey();
            if (null == color) {
                return false;
            }
            context.save();
            if (GRADFILLS) {
                final TextMetrics size = measureWithIdentityTransform(context);
                if (null != size) {
                    final double wide = size.getWidth();
                    final double high = size.getHeight();
                    drawString(context, attr, new IDrawString() {

                        @Override
                        public void draw(final Context2D context, final String s, final double xOffset, final double lineNum) {
                            context.fillTextWithGradient(s, xOffset, getLineHeight(context) * lineNum, 0, 0, wide + (wide / 6), high + (high / 6), color);
                        }
                    });
                } else {
                    final Layer layer = getLayer();
                    drawString(context, attr, new IDrawString() {

                        @Override
                        public void draw(final Context2D context, final String s, final double xOffset, final double lineNum) {
                            context.fillTextWithGradient(s, xOffset, getLineHeight(context) * lineNum, 0, 0, layer.getWidth(), layer.getHeight(), color);
                        }
                    });
                }
            } else {
                context.setFillColor(color);
                drawString(context, attr, FILL);
            }
            context.restore();
            return true;
        }
        if (false == filled) {
            return false;
        }
        context.save();
        if (attr.hasShadow()) {
            doApplyShadow(context, attr);
        }
        context.setGlobalAlpha(alpha);
        final String fill = attr.getFillColor();
        if (null != fill) {
            context.setFillColor(fill);
            drawString(context, attr, FILL);
            context.restore();
            return true;
        } else {
            final FillGradient grad = attr.getFillGradient();
            if (null != grad) {
                final String type = grad.getType();
                if (LinearGradient.TYPE.equals(type)) {
                    context.setFillGradient(grad.asLinearGradient());
                    drawString(context, attr, FILL);
                    context.restore();
                    return true;
                } else if (RadialGradient.TYPE.equals(type)) {
                    context.setFillGradient(grad.asRadialGradient());
                    drawString(context, attr, FILL);
                    context.restore();
                    return true;
                } else if (PatternGradient.TYPE.equals(type)) {
                    context.setFillGradient(grad.asPatternGradient());
                    drawString(context, attr, FILL);
                    context.restore();
                    return true;
                }
            }
        }
        context.restore();
    }
    return false;
}

Example 12 with Context2D

use of com.ait.lienzo.client.core.Context2D in project lienzo-core by ahome-it.

the class TextUtils method getTextOffsets.

public static final NFastDoubleArrayJSO getTextOffsets(final String font, final TextBaseLine baseline) {
    FORBOUNDS.getContext().setTextFont(font);
    FORBOUNDS.getContext().setTextAlign(TextAlign.LEFT);
    FORBOUNDS.getContext().setTextBaseline(TextBaseLine.ALPHABETIC);
    final int m = (int) FORBOUNDS.getContext().measureText("M").getWidth();
    final int w = (int) FORBOUNDS.getContext().measureText("Mg").getWidth();
    final int h = (m * 4);
    final ScratchPad temp = new ScratchPad(w, h);
    final Context2D ctxt = temp.getContext();
    ctxt.setFillColor(ColorName.BLACK);
    ctxt.fillRect(0, 0, w, h);
    ctxt.setTextFont(font);
    ctxt.setTextAlign(TextAlign.LEFT);
    ctxt.setTextBaseline(baseline);
    ctxt.setFillColor(ColorName.WHITE);
    ctxt.fillText("Mg", 0, m * 2);
    return getTextOffsets(ctxt.getImageData(0, 0, w, h).getData(), w, h, m * 2);
}

Example 13 with Context2D

use of com.ait.lienzo.client.core.Context2D in project lienzo-core by ahome-it.

the class Scene method toDataURL.

public final String toDataURL() {
    if (LienzoCore.IS_CANVAS_SUPPORTED) {
        final ScratchPad scratch = new ScratchPad(getWidth(), getHeight());
        final Context2D context = scratch.getContext();
        final NFastArrayList<Layer> layers = getChildNodes();
        BoundingBox bbox = getStorageBounds();
        if (null == bbox) {
            final Viewport viewport = getViewport();
            if (null != viewport) {
                bbox = viewport.getStorageBounds();
            }
        }
        if (null != layers) {
            final int size = layers.size();
            final IPathClipper clip = getPathClipper();
            if ((null != clip) && (clip.isActive())) {
                context.save();
                clip.clip(context);
            }
            for (int i = size - 1; i >= 0; i--) {
                final Layer layer = layers.get(i);
                if ((null != layer) && (layer.isVisible())) {
                    layer.drawWithTransforms(context, 1, bbox);
                }
            }
            if ((null != clip) && (clip.isActive())) {
                context.restore();
            }
        }
        return scratch.toDataURL();
    } else {
        return "data:,";
    }
}