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author | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
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committer | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
commit | 554fd8c5195424bdbcabf5de30fdc183aba391bd (patch) | |
tree | 976dc5ab7fddf506dadce60ae936f43f58787092 /libjava/gnu/gcj/xlib/Screen.java | |
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Diffstat (limited to 'libjava/gnu/gcj/xlib/Screen.java')
-rw-r--r-- | libjava/gnu/gcj/xlib/Screen.java | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/libjava/gnu/gcj/xlib/Screen.java b/libjava/gnu/gcj/xlib/Screen.java new file mode 100644 index 000000000..675ed1b9b --- /dev/null +++ b/libjava/gnu/gcj/xlib/Screen.java @@ -0,0 +1,86 @@ +/* Copyright (C) 2000 Free Software Foundation + + This file is part of libgcj. + +This software is copyrighted work licensed under the terms of the +Libgcj License. Please consult the file "LIBGCJ_LICENSE" for +details. */ + +package gnu.gcj.xlib; + +import gnu.gcj.RawData; + +/** + * A flyweight class that denotes an X11 screen. Display and screen + * number is the only data kept by this class. The real screen + * structure is stored in the display. There may exist several + * objects denoting the same screen. + * + * @author Rolf W. Rasmussen <rolfwr@ii.uib.no> + */ +public final class Screen +{ + static final int UNKNOWN = -1; + + Display display; + int screenNumber = UNKNOWN; + RawData structure; + + Screen(Display display, RawData screenStructure) + { + structure = screenStructure; + this.display = display; + } + + public Screen(Display display) + { + this(display, display.getDefaultScreenNumber()); + } + + public Screen(Display display, int screenNumber) + { + this.display = display; + this.screenNumber = screenNumber; + initStructure(); + } + + public final Display getDisplay() + { + return display; + } + + public Window getRootWindow() + { + int rootXID = getRootWindowXID(); + return display.getWindow(rootXID); + } + + public Visual getRootVisual() + { + RawData visualStructure = getRootVisualStructure(); + int depth = getRootDepth(); + return new Visual(visualStructure, this, depth); + } + + private native RawData getRootVisualStructure(); + + public native int getRootDepth(); + public native int getRootWindowXID(); + public native int getDefaultColormapXID(); + + native void initStructure(); + + public Colormap getDefaultColormap() + { + return new Colormap(this, getDefaultColormapXID()); + } + + public final int getScreenNumber() + { + if (screenNumber == UNKNOWN) + screenNumber = findScreenNumber(); + return screenNumber; + } + + public native int findScreenNumber(); +} |