mirror of git://gcc.gnu.org/git/gcc.git
68 lines
1.4 KiB
Java
68 lines
1.4 KiB
Java
package gnu.java.awt.peer.x;
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import gnu.x11.Display;
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import gnu.x11.image.ZPixmap;
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import java.awt.GraphicsEnvironment;
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import java.awt.image.DataBuffer;
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/**
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* A DataBuffer implementation that is based on a ZPixmap. This is used
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* as backing store for BufferedImages.
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*/
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class ZPixmapDataBuffer
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extends DataBuffer
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{
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/**
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* The backing ZPixmap.
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*/
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private ZPixmap zpixmap;
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/**
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* Creates a new ZPixmapDataBuffer with a specified width and height.
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*
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* @param d the X display
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* @param w the width
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* @param h the height
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*/
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ZPixmapDataBuffer(int w, int h)
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{
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super(TYPE_BYTE, w * h * 3); // TODO: Support non-24-bit-resolutions.
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GraphicsEnvironment env =
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GraphicsEnvironment.getLocalGraphicsEnvironment();
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XGraphicsDevice dev = (XGraphicsDevice) env.getDefaultScreenDevice();
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Display d = dev.getDisplay();
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zpixmap = new ZPixmap(d, w, h, d.default_pixmap_format);
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}
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/**
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* Creates a ZPixmapDataBuffer from an existing ZPixmap.
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*
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* @param zpixmap the ZPixmap to wrap
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*/
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ZPixmapDataBuffer(ZPixmap zpixmap)
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{
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super(TYPE_BYTE, zpixmap.get_data_length());
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this.zpixmap = zpixmap;
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}
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@Override
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public int getElem(int bank, int i)
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{
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return 0xff & zpixmap.get_data_element(i);
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}
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@Override
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public void setElem(int bank, int i, int val)
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{
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zpixmap.set_data_element(i, (byte) val);
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}
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ZPixmap getZPixmap()
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{
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return zpixmap;
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}
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}
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