mirror of git://gcc.gnu.org/git/gcc.git
363 lines
9.8 KiB
Java
363 lines
9.8 KiB
Java
/* GdkScreenGraphicsDevice.java -- information about a screen device
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Copyright (C) 2004, 2005, 2006 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package gnu.java.awt.peer.gtk;
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import java.awt.DisplayMode;
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import java.awt.Frame;
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import java.awt.GraphicsConfiguration;
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import java.awt.GraphicsDevice;
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import java.awt.Rectangle;
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import java.awt.Window;
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import java.util.ArrayList;
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import gnu.classpath.Configuration;
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import gnu.classpath.Pointer;
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class GdkScreenGraphicsDevice extends GraphicsDevice
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{
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private final int native_state = GtkGenericPeer.getUniqueInteger ();
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private Window fullscreenWindow;
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private boolean oldWindowDecorationState;
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private Rectangle oldWindowBounds;
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private Rectangle bounds;
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private GdkGraphicsConfiguration[] configurations;
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/** The <code>GdkGraphicsEnvironment</code> instance that created this
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* <code>GdkScreenGraphicsDevice</code>. This is only needed for native
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* methods which need to access the 'native_state' field storing a pointer
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* to a GdkDisplay object.
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*/
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GdkGraphicsEnvironment env;
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/** An identifier that is created by Gdk
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*/
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String idString;
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/** The display modes supported by this <code>GdkScreenGraphicsDevice</code>.
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* If the array is <code>null</code> <code>nativeGetDisplayModes</code> has
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* to be called.
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*/
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X11DisplayMode[] displayModes;
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/** The non-changeable display mode of this <code>GdkScreenGraphicsDevice
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* </code>. This field gets initialized by the {@link #init()} method. If it
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* is still <code>null</code> afterwards, the XRandR extension is available
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* and display mode changes are possible. If it is non-null XRandR is not
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* available, no display mode changes are possible and no other native
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* method must be called.
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*/
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DisplayMode fixedDisplayMode;
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/**
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* The pointer to the native screen resource.
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*
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* This field is manipulated by native code. Don't change or remove
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* without adjusting the native code.
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*/
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private Pointer screen;
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static
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{
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if (true) // GCJ LOCAL
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{
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System.loadLibrary("gtkpeer");
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}
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GtkToolkit.initializeGlobalIDs();
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initIDs();
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}
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static native void initIDs();
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GdkScreenGraphicsDevice (GdkGraphicsEnvironment e)
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{
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super();
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env = e;
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configurations = new GdkGraphicsConfiguration[1];
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configurations[0] = new GdkGraphicsConfiguration(this);
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}
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/** This method is called from the native side immediately after
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* the constructor is run.
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*/
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void init()
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{
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fixedDisplayMode = nativeGetFixedDisplayMode(env);
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}
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/** Depending on the availability of the XRandR extension the method returns
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* the screens' non-changeable display mode or null, meaning that XRandR can
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* handle display mode changes.
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*/
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native DisplayMode nativeGetFixedDisplayMode(GdkGraphicsEnvironment env);
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public int getType ()
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{
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// Gdk manages only raster screens.
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return GraphicsDevice.TYPE_RASTER_SCREEN;
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}
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public String getIDstring ()
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{
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if (idString == null)
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idString = nativeGetIDString();
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return idString;
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}
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private native String nativeGetIDString();
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public GraphicsConfiguration[] getConfigurations ()
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{
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return (GraphicsConfiguration[]) configurations.clone();
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}
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public GraphicsConfiguration getDefaultConfiguration ()
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{
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return configurations[0];
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}
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/**
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* Returns the current display mode of this device, or null if unknown.
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*
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* @return the current display mode
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* @see #setDisplayMode(DisplayMode)
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* @see #getDisplayModes()
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* @since 1.4
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*/
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public DisplayMode getDisplayMode()
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{
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if (fixedDisplayMode != null)
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return fixedDisplayMode;
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synchronized (this)
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{
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if (displayModes == null)
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displayModes = nativeGetDisplayModes(env);
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}
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int index = nativeGetDisplayModeIndex(env);
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int rate = nativeGetDisplayModeRate(env);
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return new DisplayMode(displayModes[index].width,
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displayModes[index].height,
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DisplayMode.BIT_DEPTH_MULTI,
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rate);
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}
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native int nativeGetDisplayModeIndex(GdkGraphicsEnvironment env);
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native int nativeGetDisplayModeRate(GdkGraphicsEnvironment env);
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public DisplayMode[] getDisplayModes()
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{
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if (fixedDisplayMode != null)
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return new DisplayMode[] { fixedDisplayMode };
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synchronized (this)
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{
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if (displayModes == null)
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displayModes = nativeGetDisplayModes(env);
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}
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ArrayList<DisplayMode> list = new ArrayList<DisplayMode>();
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for(int i=0;i<displayModes.length;i++)
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for(int j=0;j<displayModes[i].rates.length;j++)
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list.add(new DisplayMode(displayModes[i].width,
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displayModes[i].height,
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DisplayMode.BIT_DEPTH_MULTI,
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displayModes[i].rates[j]));
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return list.toArray(new DisplayMode[list.size()]);
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}
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native X11DisplayMode[] nativeGetDisplayModes(GdkGraphicsEnvironment env);
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/**
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* Real fullscreen exclusive mode is not supported.
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*
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* @return <code>false</code>
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* @since 1.4
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*/
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public boolean isFullScreenSupported()
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{
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return true;
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}
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public boolean isDisplayChangeSupported()
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{
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return fixedDisplayMode == null;
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}
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public void setDisplayMode(DisplayMode dm)
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{
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if (fixedDisplayMode != null)
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throw new UnsupportedOperationException("Cannnot change display mode.");
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if (dm == null)
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throw new IllegalArgumentException("DisplayMode must not be null.");
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synchronized (this)
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{
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if (displayModes == null)
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displayModes = nativeGetDisplayModes(env);
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}
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for (int i=0; i<displayModes.length; i++)
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if (displayModes[i].width == dm.getWidth()
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&& displayModes[i].height == dm.getHeight())
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{
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synchronized (this)
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{
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nativeSetDisplayMode(env,
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i,
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(short) dm.getRefreshRate());
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bounds = null;
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}
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return;
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}
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throw new IllegalArgumentException("Mode not supported by this device.");
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}
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native void nativeSetDisplayMode(GdkGraphicsEnvironment env,
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int index, short rate);
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/** A class that simply encapsulates the X11 display mode data.
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*/
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static class X11DisplayMode
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{
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short[] rates;
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int width;
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int height;
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X11DisplayMode(int width, int height, short[] rates)
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{
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this.width = width;
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this.height = height;
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this.rates = rates;
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}
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}
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public void setFullScreenWindow(Window w)
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{
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// Bring old fullscreen window back into its original state.
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if (fullscreenWindow != null && w != fullscreenWindow)
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{
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if (fullscreenWindow instanceof Frame)
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{
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// Decoration state can only be switched when the peer is
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// non-existent. That means we have to dispose the
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// Frame.
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Frame f = (Frame) fullscreenWindow;
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if (oldWindowDecorationState != f.isUndecorated())
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{
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f.dispose();
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f.setUndecorated(oldWindowDecorationState);
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}
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}
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fullscreenWindow.setBounds(oldWindowBounds);
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if (!fullscreenWindow.isVisible())
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fullscreenWindow.setVisible(true);
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}
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// If applicable remove decoration, then maximize the window and
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// bring it to the foreground.
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if (w != null)
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{
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if (w instanceof Frame)
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{
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Frame f = (Frame) w;
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oldWindowDecorationState = f.isUndecorated();
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if (!oldWindowDecorationState)
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{
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f.dispose();
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f.setUndecorated(true);
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}
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}
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oldWindowBounds = w.getBounds();
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DisplayMode dm = getDisplayMode();
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w.setBounds(0, 0, dm.getWidth(), dm.getHeight());
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if (!w.isVisible())
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w.setVisible(true);
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w.requestFocus();
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w.toFront();
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}
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fullscreenWindow = w;
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}
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public Window getFullScreenWindow()
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{
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return fullscreenWindow;
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}
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Rectangle getBounds()
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{
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synchronized(this)
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{
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if (bounds == null)
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bounds = nativeGetBounds();
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}
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return bounds;
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}
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native Rectangle nativeGetBounds();
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}
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