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/* GdkGraphicsEnvironment.java -- information about the graphics environment

   Copyright (C) 2004, 2005, 2006  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.ClasspathGraphicsEnvironment;

import java.awt.Font;

import java.awt.Graphics2D;

import java.awt.GraphicsDevice;

import java.awt.GraphicsEnvironment;

import java.awt.HeadlessException;

import java.awt.image.BufferedImage;

import java.awt.image.ColorModel;

import java.awt.image.Raster;

import java.awt.image.SampleModel;

import java.awt.image.WritableRaster;

import java.util.Locale;

import gnu.classpath.Pointer;

public class GdkGraphicsEnvironment extends ClasspathGraphicsEnvironment

{

  private final int native_state = GtkGenericPeer.getUniqueInteger ();

  private GdkScreenGraphicsDevice defaultDevice;

  private GdkScreenGraphicsDevice[] devices;

  /**

   * The pointer to the native display resource.

   *

   * This field is manipulated by native code. Don't change or remove

   * without adjusting the native code.

   */

  private Pointer display;

  static

  {

    if (true) // GCJ LOCAL

      {

        System.loadLibrary("gtkpeer");

      }

    GtkToolkit.initializeGlobalIDs();

    initIDs();

  }

  private static native void initIDs();

  public GdkGraphicsEnvironment ()

  {

    nativeInitState();

  }

  native void nativeInitState();

  public GraphicsDevice[] getScreenDevices ()

  {

    if (devices == null)

      {

        devices = nativeGetScreenDevices();

      }

    return (GraphicsDevice[]) devices.clone();

  }

  private native GdkScreenGraphicsDevice[] nativeGetScreenDevices();

  public GraphicsDevice getDefaultScreenDevice ()

  {

    if (GraphicsEnvironment.isHeadless ())

      throw new HeadlessException ();

    synchronized (GdkGraphicsEnvironment.class)

      {

        if (defaultDevice == null)

          {

            defaultDevice = nativeGetDefaultScreenDevice();

          }

      }

    return defaultDevice;

  }

  private native GdkScreenGraphicsDevice nativeGetDefaultScreenDevice();

  public Graphics2D createGraphics (BufferedImage image)

  {

    Raster raster = image.getRaster();

    if(raster instanceof CairoSurface)

      return ((CairoSurface)raster).getGraphics();

    return new BufferedImageGraphics( image );

  }

  private native int nativeGetNumFontFamilies();

  private native void nativeGetFontFamilies(String[] family_names);

  public Font[] getAllFonts ()

  {

    throw new java.lang.UnsupportedOperationException ();

  }

  public String[] getAvailableFontFamilyNames ()

  {

    String[] family_names;

    int array_size;

    array_size = nativeGetNumFontFamilies();

    family_names = new String[array_size];

    nativeGetFontFamilies(family_names);

    return family_names;

  }

  public String[] getAvailableFontFamilyNames (Locale l)

  {

    throw new java.lang.UnsupportedOperationException ();

  }

  /**

   * Used by GtkMouseInfoPeer.

   */

  native int[] getMouseCoordinates();

  native boolean isWindowUnderMouse(GtkWindowPeer windowPeer);

  public WritableRaster createRaster(ColorModel cm, SampleModel sm)

  {

    if (CairoSurface.isCompatibleSampleModel(sm)

        && CairoSurface.isCompatibleColorModel(cm))

      return new CairoSurface(sm.getWidth(), sm.getHeight());

    else

      return null;

  }

}