Java SurfaceData.getRaster方法代码示例

import sun.java2d.SurfaceData; //导入方法依赖的package包/类
public void Blit(SurfaceData srcData,
                 SurfaceData dstData,
                 Composite comp,
                 Region clip,
                 int srcx, int srcy,
                 int dstx, int dsty,
                 int width, int height)
{
    ColorModel srcCM = srcData.getColorModel();
    ColorModel dstCM = dstData.getColorModel();
    // REMIND: Should get RenderingHints from sg2d
    CompositeContext ctx = comp.createContext(srcCM, dstCM,
                                              new RenderingHints(null));
    Raster srcRas = srcData.getRaster(srcx, srcy, width, height);
    WritableRaster dstRas =
        (WritableRaster) dstData.getRaster(dstx, dsty, width, height);

    if (clip == null) {
        clip = Region.getInstanceXYWH(dstx, dsty, width, height);
    }
    int span[] = {dstx, dsty, dstx+width, dsty+height};
    SpanIterator si = clip.getSpanIterator(span);
    srcx -= dstx;
    srcy -= dsty;
    while (si.nextSpan(span)) {
        int w = span[2] - span[0];
        int h = span[3] - span[1];
        Raster tmpSrcRas = srcRas.createChild(srcx + span[0], srcy + span[1],
                                              w, h, 0, 0, null);
        WritableRaster tmpDstRas = dstRas.createWritableChild(span[0], span[1],
                                                              w, h, 0, 0, null);
        ctx.compose(tmpSrcRas, tmpDstRas, tmpDstRas);
    }
    ctx.dispose();
}
 

import sun.java2d.SurfaceData; //导入方法依赖的package包/类
static void doSetRect(SurfaceData sData, PixelWriter pw,
                      int x1, int y1, int x2, int y2) {
    WritableRaster dstRast =
        (WritableRaster) sData.getRaster(x1, y1, x2-x1, y2-y1);
    pw.setRaster(dstRast);

    while (y1 < y2) {
        for (int x = x1; x < x2; x++) {
            pw.writePixel(x, y1);
        }
        y1++;
    }
}
 

import sun.java2d.SurfaceData; //导入方法依赖的package包/类
static void doDrawGlyphList(SurfaceData sData, PixelWriter pw,
                            GlyphList gl, Region clip)
{
    int[] bounds = gl.getBounds();
    clip.clipBoxToBounds(bounds);
    int cx1 = bounds[0];
    int cy1 = bounds[1];
    int cx2 = bounds[2];
    int cy2 = bounds[3];

    WritableRaster dstRast =
        (WritableRaster) sData.getRaster(cx1, cy1, cx2 - cx1, cy2 - cy1);
    pw.setRaster(dstRast);

    int num = gl.getNumGlyphs();
    for (int i = 0; i < num; i++) {
        gl.setGlyphIndex(i);
        int metrics[] = gl.getMetrics();
        int gx1 = metrics[0];
        int gy1 = metrics[1];
        int w = metrics[2];
        int gx2 = gx1 + w;
        int gy2 = gy1 + metrics[3];
        int off = 0;
        if (gx1 < cx1) {
            off = cx1 - gx1;
            gx1 = cx1;
        }
        if (gy1 < cy1) {
            off += (cy1 - gy1) * w;
            gy1 = cy1;
        }
        if (gx2 > cx2) gx2 = cx2;
        if (gy2 > cy2) gy2 = cy2;
        if (gx2 > gx1 && gy2 > gy1) {
            byte alpha[] = gl.getGrayBits();
            w -= (gx2 - gx1);
            for (int y = gy1; y < gy2; y++) {
                for (int x = gx1; x < gx2; x++) {
                    if (alpha[off++] < 0) {
                        pw.writePixel(x, y);
                    }
                }
                off += w;
            }
        }
    }
}
 

import sun.java2d.SurfaceData; //导入方法依赖的package包/类
public void Blit(SurfaceData src, SurfaceData dst,
                 Composite comp, Region clip,
                 int srcx, int srcy, int dstx, int dsty, int w, int h)
{
    Raster srcRast = src.getRaster(srcx, srcy, w, h);
    ColorModel srcCM = src.getColorModel();

    Raster dstRast = dst.getRaster(dstx, dsty, w, h);
    IntegerComponentRaster icr = (IntegerComponentRaster) dstRast;
    int[] dstPix = icr.getDataStorage();

    Region roi = CustomComponent.getRegionOfInterest(src, dst, clip,
                                                     srcx, srcy,
                                                     dstx, dsty, w, h);
    SpanIterator si = roi.getSpanIterator();

    Object srcPix = null;

    int dstScan = icr.getScanlineStride();
    // assert(icr.getPixelStride() == 1);
    srcx -= dstx;
    srcy -= dsty;
    int span[] = new int[4];
    while (si.nextSpan(span)) {
        int rowoff = icr.getDataOffset(0) + span[1] * dstScan + span[0];
        for (int y = span[1]; y < span[3]; y++) {
            int off = rowoff;
            for (int x = span[0]; x < span[2]; x++) {
                srcPix = srcRast.getDataElements(x+srcx, y+srcy, srcPix);
                dstPix[off++] = srcCM.getRGB(srcPix);
            }
            rowoff += dstScan;
        }
    }
    // Pixels in the dest were modified directly, we must
    // manually notify the raster that it was modified
    icr.markDirty();
    // REMIND: We need to do something to make sure that dstRast
    // is put back to the destination (as in the native Release
    // function)
    // src.releaseRaster(srcRast);  // NOP?
    // dst.releaseRaster(dstRast);
}