/*
* $Id$
*
* Copyright (C) 2003-2014 JNode.org
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library 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 Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library; If not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
package org.jnode.driver.console.textscreen;
import java.awt.event.InputEvent;
import java.awt.event.KeyEvent;
import org.jnode.driver.console.ConsoleManager;
import org.jnode.driver.console.ScrollableTextConsole;
import org.jnode.driver.input.KeyboardEvent;
import org.jnode.driver.input.PointerEvent;
import org.jnode.driver.textscreen.ScrollableTextScreen;
/**
* @author Ewout Prangsma (epr@users.sourceforge.net)
*/
public class ScrollableTextScreenConsole extends TextScreenConsole implements ScrollableTextConsole {
/**
* @param mgr
* @param name
* @param screen
*/
public ScrollableTextScreenConsole(ConsoleManager mgr, String name,
ScrollableTextScreen screen, int options) {
super(mgr, name, screen, options);
}
/**
* Scroll a given number of rows up.
*
* @param rows
*/
public void scrollUp(int rows) {
final ScrollableTextScreen screen = getScrollableTextScreen();
screen.scrollUp(rows);
final int length = rows * screen.getWidth();
screen.sync(screen.getHeight() * screen.getWidth() - length, length);
}
/**
* Scroll a given number of rows down.
*
* @param rows
*/
public void scrollDown(int rows) {
final ScrollableTextScreen screen = getScrollableTextScreen();
screen.scrollDown(rows);
screen.sync(0, rows * screen.getWidth());
}
/**
* Ensure that the given row is visible.
*
* @param row
*/
@Override
public void ensureVisible(int row) {
getScrollableTextScreen().ensureVisible(row, isFocused());
}
/**
* @see org.jnode.driver.input.KeyboardListener#keyPressed(org.jnode.driver.input.KeyboardEvent)
*/
@Override
public void keyPressed(KeyboardEvent event) {
if (isFocused() && !event.isConsumed()) {
final int modifiers = event.getModifiers();
if ((modifiers & InputEvent.SHIFT_DOWN_MASK) != 0) {
switch (event.getKeyCode()) {
case KeyEvent.VK_PAGE_UP:
scrollUp(10);
event.consume();
break;
case KeyEvent.VK_PAGE_DOWN:
scrollDown(10);
event.consume();
break;
case KeyEvent.VK_UP:
scrollUp(1);
event.consume();
break;
case KeyEvent.VK_DOWN:
scrollDown(1);
event.consume();
break;
}
}
}
if (!event.isConsumed()) {
super.keyPressed(event);
}
}
/**
* @see org.jnode.driver.input.PointerListener#pointerStateChanged(org.jnode.driver.input.PointerEvent)
*/
@Override
public void pointerStateChanged(PointerEvent event) {
if (isFocused() && (event.getZ() != 0)) {
final int z = event.getZ();
if (z < 0) {
scrollUp(Math.abs(z));
} else {
scrollDown(Math.abs(z));
}
event.consume();
}
if (!event.isConsumed()) {
super.pointerStateChanged(event);
}
}
private final ScrollableTextScreen getScrollableTextScreen() {
return (ScrollableTextScreen) getScreen();
}
}