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GraphicsSurfaceDestination.javaAPI DocphoneME MR2 API (J2ME)3689Wed May 02 18:00:36 BST 2007com.sun.pisces

GraphicsSurfaceDestination

public final class GraphicsSurfaceDestination extends Object implements SurfaceDestination

Fields Summary
private final javax.microedition.lcdui.Graphics
g
Constructors Summary
public GraphicsSurfaceDestination(javax.microedition.lcdui.Graphics g)

        this.g = g;
Methods Summary
public voiddrawRGB(int[] argb, int offset, int scanLength, int x, int y, int width, int height, float opacity)

        drawRGBImpl(g, argb, offset, scanLength, x, y, width, height, opacity);
private static voiddrawRGBImpl(javax.microedition.lcdui.Graphics g, int[] argb, int offset, int scanLength, int x, int y, int width, int height, float opacity)

        if (opacity < 1) {
            int[] buffer = new int[width * height];
            int op = (int)(0x100 * opacity);
            int scanRest = scanLength - width;
            int sidx = offset;
            int didx = 0;
            for (int h = height; h > 0; --h) {
                for (int sidx2 = sidx + width; sidx < sidx2; ++sidx) {
                    int pixel = argb[sidx];
                    int alpha = ((pixel >>> 24) * op + 128) >> 8;
                    buffer[didx++] = (pixel & 0xffffff) | (alpha << 24);
                }
                sidx += scanRest;
            }
            
            g.drawRGB(buffer, 0, width, x, y, width, height, true);
            return;
        }
        
        g.drawRGB(argb, offset, scanLength, x, y, width, height, true);
public voiddrawSurface(Surface ps, int srcX, int srcY, int dstX, int dstY, int width, int height, float opacity)

        int srcW = ps.getWidth();
        int srcH = ps.getHeight();

        if (srcX < 0) {
            dstX -= srcX;
            width += srcX;
            srcX = 0;
        }

        if (srcY < 0) {
            dstY -= srcY;
            height += srcY;
            srcY = 0;
        }

        if ((srcX + width) > srcW) {
            width = srcW - srcX;
        }

        if ((srcY + height) > srcH) {
            height = srcH - srcY;
        }

        if ((width < 0) || (height < 0) || (opacity == 0)) {
            return;
        }
        
        if (ps instanceof NativeSurface) {
            NativeSurface ns = (NativeSurface)ps;
            drawRGBImpl(g, ns.getData(), srcY * srcW + srcX, srcW, dstX, dstY, 
                    width, height, opacity);
            return;
        }

        int size = width * height;
        int[] srcRGB = new int[size];

        ps.getRGB(srcRGB, 0, width, srcX, srcY, width, height);
        drawRGBImpl(g, srcRGB, 0, width, dstX, dstY, width, height, 
                opacity);