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authortromey <tromey@138bc75d-0d04-0410-961f-82ee72b054a4>2005-07-16 00:30:23 +0000
committertromey <tromey@138bc75d-0d04-0410-961f-82ee72b054a4>2005-07-16 00:30:23 +0000
commitc8875fb97fc03779a5bba09872227b1d08e5d52a (patch)
treea0b991cf5866ae1d616639b906ac001811d74508 /libjava/classpath/gnu/java/awt/peer/gtk/GtkToolkit.java
parentc40c1730800ed292b6db39a83d592476fa59623c (diff)
downloadppe42-gcc-c8875fb97fc03779a5bba09872227b1d08e5d52a.tar.gz
ppe42-gcc-c8875fb97fc03779a5bba09872227b1d08e5d52a.zip
Initial revision
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@102074 138bc75d-0d04-0410-961f-82ee72b054a4
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+/* GtkToolkit.java -- Implements an AWT Toolkit using GTK for peers
+ Copyright (C) 1998, 1999, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+GNU Classpath is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU Classpath is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Classpath; see the file COPYING. If not, write to the
+Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library. Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module. An independent module is a module which is not derived from
+or based on this library. If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so. If you do not wish to do so, delete this
+exception statement from your version. */
+
+
+package gnu.java.awt.peer.gtk;
+
+import gnu.classpath.Configuration;
+import gnu.java.awt.EmbeddedWindow;
+import gnu.java.awt.peer.ClasspathFontPeer;
+import gnu.java.awt.peer.ClasspathTextLayoutPeer;
+import gnu.java.awt.peer.EmbeddedWindowPeer;
+
+import java.awt.*;
+import java.awt.datatransfer.Clipboard;
+import java.awt.dnd.DragGestureEvent;
+import java.awt.dnd.peer.DragSourceContextPeer;
+import java.awt.font.FontRenderContext;
+import java.awt.im.InputMethodHighlight;
+import java.awt.image.BufferedImage;
+import java.awt.image.ColorModel;
+import java.awt.image.DirectColorModel;
+import java.awt.image.ImageConsumer;
+import java.awt.image.ImageObserver;
+import java.awt.image.ImageProducer;
+import java.awt.peer.*;
+import java.io.InputStream;
+import java.net.URL;
+import java.text.AttributedString;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Hashtable;
+import java.util.Iterator;
+import java.util.LinkedHashMap;
+import java.util.Map;
+import java.util.Properties;
+
+import javax.imageio.spi.IIORegistry;
+
+/* This class uses a deprecated method java.awt.peer.ComponentPeer.getPeer().
+ This merits comment. We are basically calling Sun's bluff on this one.
+ We think Sun has deprecated it simply to discourage its use as it is
+ bad programming style. However, we need to get at a component's peer in
+ this class. If getPeer() ever goes away, we can implement a hash table
+ that will keep up with every window's peer, but for now this is faster. */
+
+/**
+ * This class accesses a system property called
+ * <tt>gnu.java.awt.peer.gtk.Graphics</tt>. If the property is defined and
+ * equal to "Graphics2D", the cairo-based GdkGraphics2D will be used in
+ * drawing contexts. Any other value will cause the older GdkGraphics
+ * object to be used.
+ */
+public class GtkToolkit extends gnu.java.awt.ClasspathToolkit
+{
+ Hashtable containers = new Hashtable();
+ static EventQueue q;
+ static Clipboard systemClipboard;
+ static boolean useGraphics2dSet;
+ static boolean useGraphics2d;
+
+ public static boolean useGraphics2D()
+ {
+ if (useGraphics2dSet)
+ return useGraphics2d;
+ useGraphics2d = System.getProperty("gnu.java.awt.peer.gtk.Graphics",
+ "Graphics").equals("Graphics2D");
+ useGraphics2dSet = true;
+ return useGraphics2d;
+ }
+
+ static native void gtkInit(int portableNativeSync);
+
+ static
+ {
+ if (Configuration.INIT_LOAD_LIBRARY)
+ System.loadLibrary("gtkpeer");
+
+ int portableNativeSync;
+ String portNatSyncProp =
+ System.getProperty("gnu.classpath.awt.gtk.portable.native.sync");
+
+ if (portNatSyncProp == null)
+ portableNativeSync = -1; // unset
+ else if (Boolean.valueOf(portNatSyncProp).booleanValue())
+ portableNativeSync = 1; // true
+ else
+ portableNativeSync = 0; // false
+
+ gtkInit(portableNativeSync);
+ }
+
+ public GtkToolkit ()
+ {
+ systemClipboard = new GtkClipboard ();
+ }
+
+ public native void beep();
+ private native void getScreenSizeDimensions(int[] xy);
+
+ public int checkImage (Image image, int width, int height,
+ ImageObserver observer)
+ {
+ int status = ImageObserver.ALLBITS
+ | ImageObserver.WIDTH
+ | ImageObserver.HEIGHT;
+
+ if (image instanceof GtkImage)
+ return ((GtkImage) image).checkImage (observer);
+
+ if (observer != null)
+ observer.imageUpdate (image, status,
+ -1, -1,
+ image.getWidth (observer),
+ image.getHeight (observer));
+
+ return status;
+ }
+
+ /**
+ * A helper class to return to clients in cases where a BufferedImage is
+ * desired but its construction fails.
+ */
+ private class GtkErrorImage extends Image
+ {
+ public GtkErrorImage()
+ {
+ }
+
+ public int getWidth(ImageObserver observer)
+ {
+ return -1;
+ }
+
+ public int getHeight(ImageObserver observer)
+ {
+ return -1;
+ }
+
+ public ImageProducer getSource()
+ {
+
+ return new ImageProducer()
+ {
+ HashSet consumers = new HashSet();
+ public void addConsumer(ImageConsumer ic)
+ {
+ consumers.add(ic);
+ }
+
+ public boolean isConsumer(ImageConsumer ic)
+ {
+ return consumers.contains(ic);
+ }
+
+ public void removeConsumer(ImageConsumer ic)
+ {
+ consumers.remove(ic);
+ }
+
+ public void startProduction(ImageConsumer ic)
+ {
+ consumers.add(ic);
+ Iterator i = consumers.iterator();
+ while(i.hasNext())
+ {
+ ImageConsumer c = (ImageConsumer) i.next();
+ c.imageComplete(ImageConsumer.IMAGEERROR);
+ }
+ }
+ public void requestTopDownLeftRightResend(ImageConsumer ic)
+ {
+ startProduction(ic);
+ }
+ };
+ }
+
+ public Graphics getGraphics()
+ {
+ return null;
+ }
+
+ public Object getProperty(String name, ImageObserver observer)
+ {
+ return null;
+ }
+ public Image getScaledInstance(int width, int height, int flags)
+ {
+ return new GtkErrorImage();
+ }
+
+ public void flush()
+ {
+ }
+ }
+
+
+ /**
+ * Helper to return either a BufferedImage -- the argument -- or a
+ * GtkErrorImage if the argument is null.
+ */
+
+ private Image bufferedImageOrError(BufferedImage b)
+ {
+ if (b == null)
+ return new GtkErrorImage();
+ else
+ return b;
+ }
+
+
+ public Image createImage (String filename)
+ {
+ if (useGraphics2D())
+ return bufferedImageOrError(GdkPixbufDecoder.createBufferedImage (filename));
+ else
+ return new GtkImage (filename);
+ }
+
+ public Image createImage (URL url)
+ {
+ if (useGraphics2D())
+ return bufferedImageOrError(GdkPixbufDecoder.createBufferedImage (url));
+ else
+ {
+ GdkPixbufDecoder d = new GdkPixbufDecoder (url);
+ GtkImage image = new GtkImage (d);
+ return image;
+ }
+ }
+
+ public Image createImage (ImageProducer producer)
+ {
+ if (useGraphics2D())
+ return bufferedImageOrError(GdkPixbufDecoder.createBufferedImage (producer));
+ else
+ return new GtkImage (producer);
+ }
+
+ public Image createImage (byte[] imagedata, int imageoffset,
+ int imagelength)
+ {
+ if (useGraphics2D())
+ return bufferedImageOrError(GdkPixbufDecoder.createBufferedImage (imagedata,
+ imageoffset,
+ imagelength));
+ else
+ {
+ GdkPixbufDecoder d = new GdkPixbufDecoder (imagedata,
+ imageoffset,
+ imagelength);
+ GtkImage image = new GtkImage (d);
+ return image;
+ }
+ }
+
+ /**
+ * Creates an ImageProducer from the specified URL. The image is assumed
+ * to be in a recognised format.
+ *
+ * @param url URL to read image data from.
+ */
+ public ImageProducer createImageProducer(URL url)
+ {
+ return new GdkPixbufDecoder(url);
+ }
+
+ /**
+ * Returns the native color model (which isn't the same as the default
+ * ARGB color model, but doesn't have to be).
+ */
+ public ColorModel getColorModel ()
+ {
+ /* Return the GDK-native ABGR format */
+ return new DirectColorModel(32,
+ 0x000000FF,
+ 0x0000FF00,
+ 0x00FF0000,
+ 0xFF000000);
+ }
+
+ public String[] getFontList ()
+ {
+ return (new String[] { "Dialog",
+ "DialogInput",
+ "Monospaced",
+ "Serif",
+ "SansSerif" });
+ }
+
+ private class LRUCache extends LinkedHashMap
+ {
+ int max_entries;
+ public LRUCache(int max)
+ {
+ super(max, 0.75f, true);
+ max_entries = max;
+ }
+ protected boolean removeEldestEntry(Map.Entry eldest)
+ {
+ return size() > max_entries;
+ }
+ }
+
+ private LRUCache fontCache = new LRUCache(50);
+ private LRUCache metricsCache = new LRUCache(50);
+ private LRUCache imageCache = new LRUCache(50);
+
+ public FontMetrics getFontMetrics (Font font)
+ {
+ synchronized (metricsCache)
+ {
+ if (metricsCache.containsKey(font))
+ return (FontMetrics) metricsCache.get(font);
+ }
+
+ FontMetrics m = new GdkFontMetrics (font);
+ synchronized (metricsCache)
+ {
+ metricsCache.put(font, m);
+ }
+ return m;
+ }
+
+ public Image getImage (String filename)
+ {
+ if (imageCache.containsKey(filename))
+ return (Image) imageCache.get(filename);
+ else
+ {
+ Image im = createImage(filename);
+ imageCache.put(filename, im);
+ return im;
+ }
+ }
+
+ public Image getImage (URL url)
+ {
+ if (imageCache.containsKey(url))
+ return (Image) imageCache.get(url);
+ else
+ {
+ Image im = createImage(url);
+ imageCache.put(url, im);
+ return im;
+ }
+ }
+
+ public PrintJob getPrintJob (Frame frame, String jobtitle, Properties props)
+ {
+ return null;
+ }
+
+ public native int getScreenResolution();
+
+ public Dimension getScreenSize ()
+ {
+ int dim[] = new int[2];
+ getScreenSizeDimensions(dim);
+ return new Dimension(dim[0], dim[1]);
+ }
+
+ public Clipboard getSystemClipboard()
+ {
+ return systemClipboard;
+ }
+
+ /**
+ * Prepares a GtkImage. For every other kind of Image it just
+ * assumes the image is already prepared for rendering.
+ */
+ public boolean prepareImage (Image image, int width, int height,
+ ImageObserver observer)
+ {
+ /* GtkImages are always prepared, as long as they're loaded. */
+ if (image instanceof GtkImage)
+ return ((((GtkImage)image).checkImage (observer) &
+ ImageObserver.ALLBITS) != 0);
+
+ /* Assume anything else is too */
+ return true;
+ }
+
+ public native void sync();
+
+ protected void setComponentState (Component c, GtkComponentPeer cp)
+ {
+ /* Make the Component reflect Peer defaults */
+ if (c.getForeground () == null)
+ c.setForeground (cp.getForeground ());
+ if (c.getBackground () == null)
+ c.setBackground (cp.getBackground ());
+ // if (c.getFont () == null)
+ // c.setFont (cp.getFont ());
+
+ /* Make the Peer reflect the state of the Component */
+ if (! (c instanceof Window))
+ {
+ cp.setCursor (c.getCursor ());
+
+ Rectangle bounds = c.getBounds ();
+ cp.setBounds (bounds.x, bounds.y, bounds.width, bounds.height);
+ cp.setVisible (c.isVisible ());
+ }
+ }
+
+ protected ButtonPeer createButton (Button b)
+ {
+ return new GtkButtonPeer (b);
+ }
+
+ protected CanvasPeer createCanvas (Canvas c)
+ {
+ return new GtkCanvasPeer (c);
+ }
+
+ protected CheckboxPeer createCheckbox (Checkbox cb)
+ {
+ return new GtkCheckboxPeer (cb);
+ }
+
+ protected CheckboxMenuItemPeer createCheckboxMenuItem (CheckboxMenuItem cmi)
+ {
+ return new GtkCheckboxMenuItemPeer (cmi);
+ }
+
+ protected ChoicePeer createChoice (Choice c)
+ {
+ return new GtkChoicePeer (c);
+ }
+
+ protected DialogPeer createDialog (Dialog d)
+ {
+ return new GtkDialogPeer (d);
+ }
+
+ protected FileDialogPeer createFileDialog (FileDialog fd)
+ {
+ return new GtkFileDialogPeer (fd);
+ }
+
+ protected FramePeer createFrame (Frame f)
+ {
+ return new GtkFramePeer (f);
+ }
+
+ protected LabelPeer createLabel (Label label)
+ {
+ return new GtkLabelPeer (label);
+ }
+
+ protected ListPeer createList (List list)
+ {
+ return new GtkListPeer (list);
+ }
+
+ protected MenuPeer createMenu (Menu m)
+ {
+ return new GtkMenuPeer (m);
+ }
+
+ protected MenuBarPeer createMenuBar (MenuBar mb)
+ {
+ return new GtkMenuBarPeer (mb);
+ }
+
+ protected MenuItemPeer createMenuItem (MenuItem mi)
+ {
+ return new GtkMenuItemPeer (mi);
+ }
+
+ protected PanelPeer createPanel (Panel p)
+ {
+ return new GtkPanelPeer (p);
+ }
+
+ protected PopupMenuPeer createPopupMenu (PopupMenu target)
+ {
+ return new GtkPopupMenuPeer (target);
+ }
+
+ protected ScrollPanePeer createScrollPane (ScrollPane sp)
+ {
+ return new GtkScrollPanePeer (sp);
+ }
+
+ protected ScrollbarPeer createScrollbar (Scrollbar sb)
+ {
+ return new GtkScrollbarPeer (sb);
+ }
+
+ protected TextAreaPeer createTextArea (TextArea ta)
+ {
+ return new GtkTextAreaPeer (ta);
+ }
+
+ protected TextFieldPeer createTextField (TextField tf)
+ {
+ return new GtkTextFieldPeer (tf);
+ }
+
+ protected WindowPeer createWindow (Window w)
+ {
+ return new GtkWindowPeer (w);
+ }
+
+ public EmbeddedWindowPeer createEmbeddedWindow (EmbeddedWindow w)
+ {
+ return new GtkEmbeddedWindowPeer (w);
+ }
+
+ /**
+ * @deprecated part of the older "logical font" system in earlier AWT
+ * implementations. Our newer Font class uses getClasspathFontPeer.
+ */
+ protected FontPeer getFontPeer (String name, int style) {
+ // All fonts get a default size of 12 if size is not specified.
+ return getFontPeer(name, style, 12);
+ }
+
+ /**
+ * Private method that allows size to be set at initialization time.
+ */
+ private FontPeer getFontPeer (String name, int style, int size)
+ {
+ Map attrs = new HashMap ();
+ ClasspathFontPeer.copyStyleToAttrs (style, attrs);
+ ClasspathFontPeer.copySizeToAttrs (size, attrs);
+ return getClasspathFontPeer (name, attrs);
+ }
+
+ /**
+ * Newer method to produce a peer for a Font object, even though Sun's
+ * design claims Font should now be peerless, we do not agree with this
+ * model, hence "ClasspathFontPeer".
+ */
+
+ public ClasspathFontPeer getClasspathFontPeer (String name, Map attrs)
+ {
+ Map keyMap = new HashMap (attrs);
+ // We don't know what kind of "name" the user requested (logical, face,
+ // family), and we don't actually *need* to know here. The worst case
+ // involves failure to consolidate fonts with the same backend in our
+ // cache. This is harmless.
+ keyMap.put ("GtkToolkit.RequestedFontName", name);
+ if (fontCache.containsKey (keyMap))
+ return (ClasspathFontPeer) fontCache.get (keyMap);
+ else
+ {
+ ClasspathFontPeer newPeer = new GdkFontPeer (name, attrs);
+ fontCache.put (keyMap, newPeer);
+ return newPeer;
+ }
+ }
+
+ public ClasspathTextLayoutPeer getClasspathTextLayoutPeer (AttributedString str,
+ FontRenderContext frc)
+ {
+ return new GdkTextLayout(str, frc);
+ }
+
+ protected EventQueue getSystemEventQueueImpl()
+ {
+ synchronized (GtkToolkit.class)
+ {
+ if (q == null)
+ {
+ q = new EventQueue();
+ GtkGenericPeer.enableQueue (q);
+ }
+ }
+ return q;
+ }
+
+ protected native void loadSystemColors (int[] systemColors);
+
+ public DragSourceContextPeer createDragSourceContextPeer(DragGestureEvent e)
+ {
+ throw new Error("not implemented");
+ }
+
+ public Map mapInputMethodHighlight(InputMethodHighlight highlight)
+ {
+ throw new Error("not implemented");
+ }
+
+ public Rectangle getBounds()
+ {
+ int[] dims = new int[2];
+ getScreenSizeDimensions(dims);
+ return new Rectangle(0, 0, dims[0], dims[1]);
+ }
+
+ // ClasspathToolkit methods
+
+ public GraphicsEnvironment getLocalGraphicsEnvironment()
+ {
+ return new GdkGraphicsEnvironment(this);
+ }
+
+ public Font createFont(int format, InputStream stream)
+ {
+ throw new UnsupportedOperationException();
+ }
+
+ public RobotPeer createRobot (GraphicsDevice screen) throws AWTException
+ {
+ return new GdkRobotPeer (screen);
+ }
+
+ public void registerImageIOSpis(IIORegistry reg)
+ {
+ GdkPixbufDecoder.registerSpis(reg);
+ }
+
+ public native boolean nativeQueueEmpty();
+ public native void wakeNativeQueue();
+ public native void iterateNativeQueue(EventQueue locked, boolean block);
+
+} // class GtkToolkit
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