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/* Copyright 2009 Pierre Ossman for Cendio AB
*
* This 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 of the License, or
* (at your option) any later version.
*
* This software 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 this software; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
* USA.
*/
// Management class for the RFB virtual screens
package com.tigervnc.rfb;
import java.util.*;
public class ScreenSet {
// Represents a complete screen configuration, excluding framebuffer
// dimensions.
public ScreenSet() {
screens = new ArrayList<Screen>();
}
public final ListIterator<Screen> begin() { return screens.listIterator(0); }
public final ListIterator<Screen> end() {
return screens.listIterator(screens.size());
}
public final int num_screens() { return screens.size(); }
public final void add_screen(Screen screen) { screens.add(screen); }
public final void remove_screen(int id) {
ListIterator iter, nextiter;
for (iter = begin(); iter != end(); iter = nextiter) {
nextiter = iter; nextiter.next();
if (((Screen)iter.next()).id == id)
iter.remove();
}
}
public final boolean validate(int fb_width, int fb_height) {
List<Integer> seen_ids = new ArrayList<Integer>();
Rect fb_rect = new Rect();
if (screens.isEmpty())
return false;
if (num_screens() > 255)
return false;
fb_rect.setXYWH(0, 0, fb_width, fb_height);
for (Iterator<Screen> iter = screens.iterator(); iter.hasNext(); ) {
Screen refScreen = (Screen)iter.next();
if (refScreen.dimensions.is_empty())
return false;
if (!refScreen.dimensions.enclosed_by(fb_rect))
return false;
if (seen_ids.lastIndexOf(refScreen.id) != -1)
return false;
seen_ids.add(refScreen.id);
}
return true;
}
public final void debug_print() {
vlog.debug(num_screens()+" screen(s)");
for (Iterator<Screen> iter = screens.iterator(); iter.hasNext(); ) {
Screen refScreen = (Screen)iter.next();
vlog.debug(" "+refScreen.id+" (0x"+refScreen.id+"): "+
refScreen.dimensions.width()+"x"+refScreen.dimensions.height()+
"+"+refScreen.dimensions.tl.x+"+"+refScreen.dimensions.tl.y+
" (flags 0x"+refScreen.flags+")");
}
}
public ArrayList<Screen> screens;
static LogWriter vlog = new LogWriter("ScreenSet");
}
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