| /* |
| * Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code 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 |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| package sun.awt; |
| |
| import java.awt.RenderingHints; |
| import static java.awt.RenderingHints.*; |
| import java.awt.color.ColorSpace; |
| import java.awt.image.*; |
| import java.security.AccessController; |
| import java.security.PrivilegedAction; |
| import sun.security.action.GetIntegerAction; |
| import com.sun.java.swing.plaf.gtk.GTKConstants.TextDirection; |
| import sun.java2d.opengl.OGLRenderQueue; |
| import java.lang.reflect.InvocationTargetException; |
| |
| public abstract class UNIXToolkit extends SunToolkit |
| { |
| /** All calls into GTK should be synchronized on this lock */ |
| public static final Object GTK_LOCK = new Object(); |
| |
| private static final int[] BAND_OFFSETS = { 0, 1, 2 }; |
| private static final int[] BAND_OFFSETS_ALPHA = { 0, 1, 2, 3 }; |
| private static final int DEFAULT_DATATRANSFER_TIMEOUT = 10000; |
| |
| private Boolean nativeGTKAvailable; |
| private Boolean nativeGTKLoaded; |
| private BufferedImage tmpImage = null; |
| |
| public static int getDatatransferTimeout() { |
| Integer dt = (Integer)AccessController.doPrivileged( |
| new GetIntegerAction("sun.awt.datatransfer.timeout")); |
| if (dt == null || dt <= 0) { |
| return DEFAULT_DATATRANSFER_TIMEOUT; |
| } else { |
| return dt; |
| } |
| } |
| |
| /** |
| * Returns true if the native GTK libraries are capable of being |
| * loaded and are expected to work properly, false otherwise. Note |
| * that this method will not leave the native GTK libraries loaded if |
| * they haven't already been loaded. This allows, for example, Swing's |
| * GTK L&F to test for the presence of native GTK support without |
| * leaving the native libraries loaded. To attempt long-term loading |
| * of the native GTK libraries, use the loadGTK() method instead. |
| */ |
| @Override |
| public boolean isNativeGTKAvailable() { |
| synchronized (GTK_LOCK) { |
| if (nativeGTKLoaded != null) { |
| // We've already attempted to load GTK, so just return the |
| // status of that attempt. |
| return nativeGTKLoaded.booleanValue(); |
| |
| } else if (nativeGTKAvailable != null) { |
| // We've already checked the availability of the native GTK |
| // libraries, so just return the status of that attempt. |
| return nativeGTKAvailable.booleanValue(); |
| |
| } else { |
| boolean success = check_gtk(); |
| nativeGTKAvailable = Boolean.valueOf(success); |
| return success; |
| } |
| } |
| } |
| |
| /** |
| * Loads the GTK libraries, if necessary. The first time this method |
| * is called, it will attempt to load the native GTK library. If |
| * successful, it leaves the library open and returns true; otherwise, |
| * the library is left closed and returns false. On future calls to |
| * this method, the status of the first attempt is returned (a simple |
| * lightweight boolean check, no native calls required). |
| */ |
| public boolean loadGTK() { |
| synchronized (GTK_LOCK) { |
| if (nativeGTKLoaded == null) { |
| boolean success = load_gtk(); |
| nativeGTKLoaded = Boolean.valueOf(success); |
| } |
| } |
| return nativeGTKLoaded.booleanValue(); |
| } |
| |
| /** |
| * Overridden to handle GTK icon loading |
| */ |
| protected Object lazilyLoadDesktopProperty(String name) { |
| if (name.startsWith("gtk.icon.")) { |
| return lazilyLoadGTKIcon(name); |
| } |
| return super.lazilyLoadDesktopProperty(name); |
| } |
| |
| /** |
| * Load a native Gtk stock icon. |
| * |
| * @param longname a desktop property name. This contains icon name, size |
| * and orientation, e.g. <code>"gtk.icon.gtk-add.4.rtl"</code> |
| * @return an <code>Image</code> for the icon, or <code>null</code> if the |
| * icon could not be loaded |
| */ |
| protected Object lazilyLoadGTKIcon(String longname) { |
| // Check if we have already loaded it. |
| Object result = desktopProperties.get(longname); |
| if (result != null) { |
| return result; |
| } |
| |
| // We need to have at least gtk.icon.<stock_id>.<size>.<orientation> |
| String str[] = longname.split("\\."); |
| if (str.length != 5) { |
| return null; |
| } |
| |
| // Parse out the stock icon size we are looking for. |
| int size = 0; |
| try { |
| size = Integer.parseInt(str[3]); |
| } catch (NumberFormatException nfe) { |
| return null; |
| } |
| |
| // Direction. |
| TextDirection dir = ("ltr".equals(str[4]) ? TextDirection.LTR : |
| TextDirection.RTL); |
| |
| // Load the stock icon. |
| BufferedImage img = getStockIcon(-1, str[2], size, dir.ordinal(), null); |
| if (img != null) { |
| // Create the desktop property for the icon. |
| setDesktopProperty(longname, img); |
| } |
| return img; |
| } |
| |
| /** |
| * Returns a BufferedImage which contains the Gtk icon requested. If no |
| * such icon exists or an error occurs loading the icon the result will |
| * be null. |
| * |
| * @param filename |
| * @return The icon or null if it was not found or loaded. |
| */ |
| public BufferedImage getGTKIcon(final String filename) { |
| if (!loadGTK()) { |
| return null; |
| |
| } else { |
| // Call the native method to load the icon. |
| synchronized (GTK_LOCK) { |
| if (!load_gtk_icon(filename)) { |
| tmpImage = null; |
| } |
| } |
| } |
| // Return local image the callback loaded the icon into. |
| return tmpImage; |
| } |
| |
| /** |
| * Returns a BufferedImage which contains the Gtk stock icon requested. |
| * If no such stock icon exists the result will be null. |
| * |
| * @param widgetType one of WidgetType values defined in GTKNativeEngine or |
| * -1 for system default stock icon. |
| * @param stockId String which defines the stock id of the gtk item. |
| * For a complete list reference the API at www.gtk.org for StockItems. |
| * @param iconSize One of the GtkIconSize values defined in GTKConstants |
| * @param textDirection One of the TextDirection values defined in |
| * GTKConstants |
| * @param detail Render detail that is passed to the native engine (feel |
| * free to pass null) |
| * @return The stock icon or null if it was not found or loaded. |
| */ |
| public BufferedImage getStockIcon(final int widgetType, final String stockId, |
| final int iconSize, final int direction, |
| final String detail) { |
| if (!loadGTK()) { |
| return null; |
| |
| } else { |
| // Call the native method to load the icon. |
| synchronized (GTK_LOCK) { |
| if (!load_stock_icon(widgetType, stockId, iconSize, direction, detail)) { |
| tmpImage = null; |
| } |
| } |
| } |
| // Return local image the callback loaded the icon into. |
| return tmpImage; // set by loadIconCallback |
| } |
| |
| /** |
| * This method is used by JNI as a callback from load_stock_icon. |
| * Image data is passed back to us via this method and loaded into the |
| * local BufferedImage and then returned via getStockIcon. |
| * |
| * Do NOT call this method directly. |
| */ |
| public void loadIconCallback(byte[] data, int width, int height, |
| int rowStride, int bps, int channels, boolean alpha) { |
| // Reset the stock image to null. |
| tmpImage = null; |
| |
| // Create a new BufferedImage based on the data returned from the |
| // JNI call. |
| DataBuffer dataBuf = new DataBufferByte(data, (rowStride * height)); |
| // Maybe test # channels to determine band offsets? |
| WritableRaster raster = Raster.createInterleavedRaster(dataBuf, |
| width, height, rowStride, channels, |
| (alpha ? BAND_OFFSETS_ALPHA : BAND_OFFSETS), null); |
| ColorModel colorModel = new ComponentColorModel( |
| ColorSpace.getInstance(ColorSpace.CS_sRGB), alpha, false, |
| ColorModel.TRANSLUCENT, DataBuffer.TYPE_BYTE); |
| |
| // Set the local image so we can return it later from |
| // getStockIcon(). |
| tmpImage = new BufferedImage(colorModel, raster, false, null); |
| } |
| |
| private static native boolean check_gtk(); |
| private static native boolean load_gtk(); |
| private static native boolean unload_gtk(); |
| private native boolean load_gtk_icon(String filename); |
| private native boolean load_stock_icon(int widget_type, String stock_id, |
| int iconSize, int textDirection, String detail); |
| |
| private native void nativeSync(); |
| |
| public void sync() { |
| // flush the X11 buffer |
| nativeSync(); |
| // now flush the OGL pipeline (this is a no-op if OGL is not enabled) |
| OGLRenderQueue.sync(); |
| } |
| |
| /* |
| * This returns the value for the desktop property "awt.font.desktophints" |
| * It builds this by querying the Gnome desktop properties to return |
| * them as platform independent hints. |
| * This requires that the Gnome properties have already been gathered. |
| */ |
| public static final String FONTCONFIGAAHINT = "fontconfig/Antialias"; |
| protected RenderingHints getDesktopAAHints() { |
| |
| Object aaValue = getDesktopProperty("gnome.Xft/Antialias"); |
| |
| if (aaValue == null) { |
| /* On a KDE desktop running KWin the rendering hint will |
| * have been set as property "fontconfig/Antialias". |
| * No need to parse further in this case. |
| */ |
| aaValue = getDesktopProperty(FONTCONFIGAAHINT); |
| if (aaValue != null) { |
| return new RenderingHints(KEY_TEXT_ANTIALIASING, aaValue); |
| } else { |
| return null; // no Gnome or KDE Desktop properties available. |
| } |
| } |
| |
| /* 0 means off, 1 means some ON. What would any other value mean? |
| * If we require "1" to enable AA then some new value would cause |
| * us to default to "OFF". I don't think that's the best guess. |
| * So if its !=0 then lets assume AA. |
| */ |
| boolean aa = Boolean.valueOf(((aaValue instanceof Number) && |
| ((Number)aaValue).intValue() != 0)); |
| Object aaHint; |
| if (aa) { |
| String subpixOrder = |
| (String)getDesktopProperty("gnome.Xft/RGBA"); |
| |
| if (subpixOrder == null || subpixOrder.equals("none")) { |
| aaHint = VALUE_TEXT_ANTIALIAS_ON; |
| } else if (subpixOrder.equals("rgb")) { |
| aaHint = VALUE_TEXT_ANTIALIAS_LCD_HRGB; |
| } else if (subpixOrder.equals("bgr")) { |
| aaHint = VALUE_TEXT_ANTIALIAS_LCD_HBGR; |
| } else if (subpixOrder.equals("vrgb")) { |
| aaHint = VALUE_TEXT_ANTIALIAS_LCD_VRGB; |
| } else if (subpixOrder.equals("vbgr")) { |
| aaHint = VALUE_TEXT_ANTIALIAS_LCD_VBGR; |
| } else { |
| /* didn't recognise the string, but AA is requested */ |
| aaHint = VALUE_TEXT_ANTIALIAS_ON; |
| } |
| } else { |
| aaHint = VALUE_TEXT_ANTIALIAS_DEFAULT; |
| } |
| return new RenderingHints(KEY_TEXT_ANTIALIASING, aaHint); |
| } |
| |
| private native boolean gtkCheckVersionImpl(int major, int minor, |
| int micro); |
| |
| /** |
| * Returns {@code true} if the GTK+ library is compatible with the given |
| * version. |
| * |
| * @param major |
| * The required major version. |
| * @param minor |
| * The required minor version. |
| * @param micro |
| * The required micro version. |
| * @return {@code true} if the GTK+ library is compatible with the given |
| * version. |
| */ |
| public boolean checkGtkVersion(int major, int minor, int micro) { |
| if (loadGTK()) { |
| return gtkCheckVersionImpl(major, minor, micro); |
| } |
| return false; |
| } |
| } |
