Examples of com.emitrom.lienzo.client.core.Context2D

com.emitrom.lienzo.client.core.Context2D
Wrapper around a JSO that serves as a proxy to access the native capabilities of Canvas 2D. @see {@link NativeContext2D}


    public static final Color extract(String color)
    {
        s_canvas.clear();


        Context2D context = s_canvas.getContext();


        context.setFillColor(color);


        context.fillRect(0, 0, 2, 2);


        ImageData data = context.getImageData(0, 0, 2, 2);


        return new Color(data.getRedAt(1, 1), data.getGreenAt(1, 1), data.getBlueAt(1, 1), (((double) data.getAlphaAt(1, 1)) / 255.0));
    }

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            m_element.setWidth(wide);


            m_element.setHeight(high);


            m_context = new Context2D(getNativeContext2D(m_element));
        }
        else
        {
            m_element = null;

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        }
    }


    public final void clear()
    {
        Context2D context = getContext();


        if (null != context)
        {
            context.clearRect(0, 0, m_wide, m_high);
        }
    }

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            {
                m_element = Document.get().createCanvasElement();
            }
            if (null == m_context)
            {
                m_context = new Context2D(getNativeContext2D(m_element));
            }
        }
        return m_element;
    }

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                {
                    draw = m_olbd.onLayerBeforeDraw(this);
                }
                if (draw)
                {
                    Context2D context = getContext();


                    Transform transform = null;


                    if (isTransformable())
                    {
                        transform = getViewport().getTransform();
                    }
                    if (transform != null)
                    {
                        context.save();


                        context.transform(transform);
                    }
                    drawWithTransforms(context);


                    if (transform != null)
                    {
                        context.restore();
                    }
                    if (m_olad != null)
                    {
                        m_olad.onLayerAfterDraw(this);
                    }
                    if (isListening())
                    {
                        SelectionLayer selection = getSelectionLayer();


                        if (null != selection)
                        {
                            selection.clear();


                            context = selection.getContext();


                            if (transform != null)
                            {
                                context.save();


                                context.transform(transform);
                            }
                            drawWithTransforms(context);


                            if (transform != null)
                            {
                                context.restore();
                            }
                        }
                    }
                }
            }

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                // Prepare the Image for the Selection Layer.
                // Get ImageData of the image by drawing it in a temporary canvas...


                ScratchCanvas scratch = new ScratchCanvas(m_destinationWidth, m_destinationHeight);


                Context2D context = scratch.getContext();


                context.drawImage(m_imageJSO, m_x, m_y, m_width, m_height, 0, 0, m_destinationWidth, m_destinationHeight);


                ImageData imageData = context.getImageData(0, 0, m_destinationWidth, m_destinationHeight);


                // Now draw the image again, replacing each color with the color key


                scratch.clear();


                Color rgb = Color.fromColorString(m_picture.getColorKey());


                context.putImageData(new RGBIgnoreAlphaImageDataFilter(rgb.getR(), rgb.getG(), rgb.getB()).filter(imageData, true), 0, 0);


                // Load the resulting image from the temporary canvas into the selection Image


                String dataURL = scratch.toDataURL();

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        {
            return null;
        }
        ScratchCanvas scratch = new ScratchCanvas(m_destinationWidth, m_destinationHeight);


        Context2D context = scratch.getContext();


        context.drawImage(m_imageJSO, m_x, m_y, m_width, m_height, 0, 0, m_destinationWidth, m_destinationHeight);


        ImageData imageData = context.getImageData(0, 0, m_destinationWidth, m_destinationHeight);


        return imageData;
    }

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        {
            return null;
        }
        ScratchCanvas scratch = new ScratchCanvas(m_destinationWidth, m_destinationHeight);


        Context2D context = scratch.getContext();


        context.drawImage(m_imageJSO, m_x, m_y, m_width, m_height, 0, 0, m_destinationWidth, m_destinationHeight);


        if (mimeType == null)
        {
            return scratch.toDataURL();
        }

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     */
    public final ImageData copy()
    {
        ScratchCanvas scratch = new ScratchCanvas(getWidth(), getHeight());


        Context2D context = scratch.getContext();


        context.putImageData(this, 0, 0);


        return context.getImageData(0, 0, getWidth(), getHeight());
    }

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    {
        if (false == m_virgin)
        {
            if (LienzoGlobals.getInstance().getLayerClearMode() == LayerClearMode.CLEAR)
            {
                Context2D context = getContext();


                if (null != context)
                {
                    context.clearRect(0, 0, m_wide, m_high);
                }
            }
            else
            {
                setPixelSize(m_wide, m_high);

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Related Classes of com.emitrom.lienzo.client.core.Context2D

com.emitrom.lienzo.client.core.image.ImageProxy

com.emitrom.lienzo.client.core.shape.Layer

com.emitrom.lienzo.client.core.types.ImageData

com.emitrom.lienzo.client.core.types.ImageDataPixelColor

com.emitrom.lienzo.client.core.util.ColorExtractor

com.emitrom.lienzo.client.core.util.ScratchCanvas

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