Examples of org.apache.harmony.awt.gl.CommonGraphics2D

org.apache.harmony.awt.gl.CommonGraphics2D
CommonGraphics2D class is a super class for all system-dependent implementations. It implements major part of Graphics and Graphics2D abstract methods.
CommonGraphics2D Class Internals

Line and Shape Rasterizers

The CommonGraphics2D class splits all shapes into a set of rectangles to unify the drawing process for different operating systems and architectures. For this purpose Java 2D* uses the JavaShapeRasterizer and the JavaLineRasterizer classes from the org.apache.harmony.awt.gl.render package. The JavaShapeRasterizer class splits an object implementing a Shape interface into a set of rectangles and produces a MultiRectArea object. The JavaLineRasterizer class makes line drawing more accurate and processes lines with strokes, which are instances of the BasicStroke class.

To port the shape drawing to another platform you just need to override rectangle-drawing methods. However, if your operating system has functions to draw particular shapes, you can optimize your subclass of the CommonGraphics2D class by using this functionality in overridden methods.

Blitters

Blitter classes draw images on the display or buffered images. All blitters inherit the org.apache.harmony.awt.gl.render.Blitter interface.

Blitters are divided into:
- Native blitters for simple types of images, which the underlying native library can draw.
- Java* blitters for those types of images, which the underlying native library cannot handle.
DRL Java 2D* also uses blitters to fill the shapes and the user-defined subclasses of the java.awt.Paint class with paints, which the system does not support.

Text Renderers

Text renderers draw strings and glyph vectors. All text renderers are subclasses of the org.apache.harmony.awt.gl.TextRenderer class.


    // X11 instanse
    static final X11 x11 = X11.getInstance();


    public void drawString(Graphics2D ga, String str, float x, float y) {
        CommonGraphics2D g = (CommonGraphics2D)ga;
        AffineTransform trans = g.getTransform();
        double xOffset = x + trans.getTranslateX();
        double yOffset = y + trans.getTranslateY();


        FontPeerImpl fnt = (FontPeerImpl)g.getFont().getPeer();
        if (fnt.getClass() == CompositeFont.class){
            drawCompositeString(g, str, xOffset, yOffset);
        } else {
            drawNormalString(g, str, xOffset, yOffset);
        }

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    }


    public void drawGlyphVector(Graphics2D ga, GlyphVector gv, float x, 
            float y) {
        CommonGraphics2D g = (CommonGraphics2D)ga;
        AffineTransform trans = g.getTransform();
        float xOffset = x + (float)trans.getTranslateX();
        float yOffset = y + (float)trans.getTranslateY();


        FontPeerImpl fnt = (FontPeerImpl)gv.getFont().getPeer();
        if (fnt.getClass() == CompositeFont.class){

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        Object value = g.getRenderingHint(RenderingHints.KEY_ANTIALIASING);
        return (value == RenderingHints.VALUE_ANTIALIAS_ON);
    }


    public void drawString(Graphics2D ga, String str, float x, float y) {
        CommonGraphics2D g = (CommonGraphics2D)ga;
        AffineTransform trans = g.getTransform();
        double xOffset = x + trans.getTranslateX();
        double yOffset = y + trans.getTranslateY();


        FontPeerImpl fnt = (FontPeerImpl)g.getFont().getPeer();


        if (fnt.getClass() == CompositeFont.class){
            drawCompositeString(g, str, xOffset, yOffset);
        } else {
            drawNormalString(g, str, xOffset, yOffset);

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    }


    public void drawGlyphVector(Graphics2D ga, GlyphVector gv, float x, 
            float y) {
        CommonGraphics2D g = (CommonGraphics2D)ga;
        AffineTransform trans = g.getTransform();
        float xOffset = x + (float)trans.getTranslateX();
        float yOffset = y + (float)trans.getTranslateY();


        FontPeerImpl fnt = (FontPeerImpl)gv.getFont().getPeer();
        if (fnt.getClass() == CompositeFont.class){

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        Object value = g.getRenderingHint(RenderingHints.KEY_ANTIALIASING);
        return (value == RenderingHints.VALUE_ANTIALIAS_ON);
    }


    public void drawString(Graphics2D ga, String str, float x, float y) {
        CommonGraphics2D g = (CommonGraphics2D)ga;
        AffineTransform trans = g.getTransform();
        double xOffset = x + trans.getTranslateX();
        double yOffset = y + trans.getTranslateY();


        FontPeerImpl fnt = (FontPeerImpl)g.getFont().getPeer();


        if (fnt.getClass() == CompositeFont.class){
            drawCompositeString(g, str, xOffset, yOffset);
        } else {
            drawNormalString(g, str, xOffset, yOffset);

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    }


    public void drawGlyphVector(Graphics2D ga, GlyphVector gv, float x, 
            float y) {
        CommonGraphics2D g = (CommonGraphics2D)ga;
        AffineTransform trans = g.getTransform();
        float xOffset = x + (float)trans.getTranslateX();
        float yOffset = y + (float)trans.getTranslateY();


        FontPeerImpl fnt = (FontPeerImpl)gv.getFont().getPeer();
        if (fnt.getClass() == CompositeFont.class){

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Related Classes of org.apache.harmony.awt.gl.CommonGraphics2D

com.google.code.appengine.awt.BasicStroke

com.google.code.appengine.awt.Color

com.google.code.appengine.awt.font.FontRenderContext

com.google.code.appengine.awt.font.GlyphVector

com.google.code.appengine.awt.geom.AffineTransform

com.google.code.appengine.awt.geom.PathIterator

com.google.code.appengine.awt.GraphicsConfiguration

com.google.code.appengine.awt.Image

com.google.code.appengine.awt.image.AffineTransformOp

com.google.code.appengine.awt.image.BufferedImage

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Examples of org.apache.harmony.awt.gl.CommonGraphics2D

CommonGraphics2D Class Internals

Line and Shape Rasterizers

Blitters

Text Renderers

Related Classes of org.apache.harmony.awt.gl.CommonGraphics2D