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Copy/Paste support. :-)

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This commit is contained in:
Harald Kuhr 2015-04-08 16:14:29 +02:00
parent 9ca76ec128
commit c2f93b2d3f
1 changed files with 92 additions and 12 deletions
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104
imageio/imageio-core/src/main/java/com/twelvemonkeys/imageio/ImageReaderBase.java
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@ -29,6 +29,7 @@
package com.twelvemonkeys.imageio; package com.twelvemonkeys.imageio;
import com.twelvemonkeys.image.BufferedImageIcon; import com.twelvemonkeys.image.BufferedImageIcon;
import com.twelvemonkeys.image.ImageUtil;
import com.twelvemonkeys.imageio.util.IIOUtil; import com.twelvemonkeys.imageio.util.IIOUtil;
import javax.imageio.*; import javax.imageio.*;
@ -37,6 +38,9 @@ import javax.imageio.spi.ImageReaderSpi;
import javax.imageio.stream.ImageInputStream; import javax.imageio.stream.ImageInputStream;
import javax.swing.*; import javax.swing.*;
import java.awt.*; import java.awt.*;
import java.awt.datatransfer.DataFlavor;
import java.awt.datatransfer.Transferable;
import java.awt.datatransfer.UnsupportedFlavorException;
import java.awt.event.*; import java.awt.event.*;
import java.awt.image.BufferedImage; import java.awt.image.BufferedImage;
import java.awt.image.IndexColorModel; import java.awt.image.IndexColorModel;
@ -424,6 +428,8 @@ public abstract class ImageReaderBase extends ImageReader {
static final String ZOOM_OUT = "zoom-out"; static final String ZOOM_OUT = "zoom-out";
static final String ZOOM_ACTUAL = "zoom-actual"; static final String ZOOM_ACTUAL = "zoom-actual";
private BufferedImage image;
Paint backgroundPaint; Paint backgroundPaint;
final Paint checkeredBG; final Paint checkeredBG;
@ -434,6 +440,7 @@ public abstract class ImageReaderBase extends ImageReader {
setOpaque(false); setOpaque(false);
setCursor(Cursor.getPredefinedCursor(Cursor.CROSSHAIR_CURSOR)); setCursor(Cursor.getPredefinedCursor(Cursor.CROSSHAIR_CURSOR));
image = pImage;
checkeredBG = createTexture(); checkeredBG = createTexture();
// For indexed color, default to the color of the transparent pixel, if any // For indexed color, default to the color of the transparent pixel, if any
@ -441,7 +448,7 @@ public abstract class ImageReaderBase extends ImageReader {
backgroundPaint = defaultBG != null ? defaultBG : checkeredBG; backgroundPaint = defaultBG != null ? defaultBG : checkeredBG;
setupActions(pImage); setupActions();
setComponentPopupMenu(createPopupMenu()); setComponentPopupMenu(createPopupMenu());
addMouseListener(new MouseAdapter() { addMouseListener(new MouseAdapter() {
@Override @Override
@ -451,16 +458,64 @@ public abstract class ImageReaderBase extends ImageReader {
} }
} }
}); });
setTransferHandler(new TransferHandler() {
@Override
public int getSourceActions(JComponent c) {
return COPY;
}
@Override
protected Transferable createTransferable(JComponent c) {
return new ImageTransferable(image);
}
@Override
public boolean importData(JComponent comp, Transferable t) {
if (canImport(comp, t.getTransferDataFlavors())) {
try {
Image transferData = (Image) t.getTransferData(DataFlavor.imageFlavor);
image = ImageUtil.toBuffered(transferData);
setIcon(new BufferedImageIcon(image));
return true;
}
catch (UnsupportedFlavorException | IOException ignore) {
}
}
return false;
}
@Override
public boolean canImport(JComponent comp, DataFlavor[] transferFlavors) {
for (DataFlavor flavor : transferFlavors) {
if (flavor.equals(DataFlavor.imageFlavor)) {
return true;
}
}
return false;
}
@Override
protected void exportDone(JComponent source, Transferable data, int action) {
super.exportDone(source, data, action);
}
});
} }
private void setupActions(final BufferedImage pImage) { private void setupActions() {
// Mac weirdness... VK_MINUS/VK_PLUS seems to map to english key map always... // Mac weirdness... VK_MINUS/VK_PLUS seems to map to english key map always...
bindAction(new ZoomAction("Zoom in", pImage, 2), ZOOM_IN, KeyStroke.getKeyStroke('+'), KeyStroke.getKeyStroke(KeyEvent.VK_ADD, 0)); bindAction(new ZoomAction("Zoom in", 2), ZOOM_IN, KeyStroke.getKeyStroke('+'), KeyStroke.getKeyStroke(KeyEvent.VK_ADD, 0));
bindAction(new ZoomAction("Zoom out", pImage, .5), ZOOM_OUT, KeyStroke.getKeyStroke('-'), KeyStroke.getKeyStroke(KeyEvent.VK_SUBTRACT, 0)); bindAction(new ZoomAction("Zoom out", .5), ZOOM_OUT, KeyStroke.getKeyStroke('-'), KeyStroke.getKeyStroke(KeyEvent.VK_SUBTRACT, 0));
bindAction(new ZoomAction("Zoom actual", pImage), ZOOM_ACTUAL, KeyStroke.getKeyStroke('0'), KeyStroke.getKeyStroke(KeyEvent.VK_0, 0)); bindAction(new ZoomAction("Zoom actual"), ZOOM_ACTUAL, KeyStroke.getKeyStroke('0'), KeyStroke.getKeyStroke(KeyEvent.VK_0, 0));
bindAction(TransferHandler.getCopyAction(), (String) TransferHandler.getCopyAction().getValue(Action.NAME), KeyStroke.getKeyStroke(KeyEvent.VK_C, Toolkit.getDefaultToolkit().getMenuShortcutKeyMask()));
bindAction(TransferHandler.getPasteAction(), (String) TransferHandler.getPasteAction().getValue(Action.NAME), KeyStroke.getKeyStroke(KeyEvent.VK_V, Toolkit.getDefaultToolkit().getMenuShortcutKeyMask()));
} }
private void bindAction(final AbstractAction action, final String key, final KeyStroke... keyStrokes) { private void bindAction(final Action action, final String key, final KeyStroke... keyStrokes) {
for (KeyStroke keyStroke : keyStrokes) { for (KeyStroke keyStroke : keyStrokes) {
getInputMap(WHEN_IN_FOCUSED_WINDOW).put(keyStroke, key); getInputMap(WHEN_IN_FOCUSED_WINDOW).put(keyStroke, key);
} }
@ -588,20 +643,18 @@ public abstract class ImageReaderBase extends ImageReader {
} }
private class ZoomAction extends AbstractAction { private class ZoomAction extends AbstractAction {
private final BufferedImage image;
private final double zoomFactor; private final double zoomFactor;
public ZoomAction(final String name, final BufferedImage image, final double zoomFactor) { public ZoomAction(final String name, final double zoomFactor) {
super(name); super(name);
this.image = image;
this.zoomFactor = zoomFactor; this.zoomFactor = zoomFactor;
} }
public ZoomAction(final String name, final BufferedImage image) { public ZoomAction(final String name) {
this(name, image, 0); this(name, 0);
} }
public void actionPerformed(ActionEvent e) { public void actionPerformed(final ActionEvent e) {
if (zoomFactor <= 0) { if (zoomFactor <= 0) {
setIcon(new BufferedImageIcon(image)); setIcon(new BufferedImageIcon(image));
} }
@ -614,6 +667,33 @@ public abstract class ImageReaderBase extends ImageReader {
} }
} }
} }
private static class ImageTransferable implements Transferable {
private final BufferedImage image;
public ImageTransferable(final BufferedImage image) {
this.image = image;
}
@Override
public DataFlavor[] getTransferDataFlavors() {
return new DataFlavor[] {DataFlavor.imageFlavor};
}
@Override
public boolean isDataFlavorSupported(final DataFlavor flavor) {
return DataFlavor.imageFlavor.equals(flavor);
}
@Override
public Object getTransferData(final DataFlavor flavor) throws UnsupportedFlavorException, IOException {
if (isDataFlavorSupported(flavor)) {
return image;
}
throw new UnsupportedFlavorException(flavor);
}
}
} }
private static class ExitIfNoWindowPresentHandler extends WindowAdapter { private static class ExitIfNoWindowPresentHandler extends WindowAdapter {