javax.microedition.lcdui.Ticker Maven / Gradle / Ivy
/*
* MicroEmulator
* Copyright (C) 2001 Bartek Teodorczyk
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Contributor(s):
* 3GLab
*/
package javax.microedition.lcdui;
import org.microemu.DisplayAccess;
import org.microemu.MIDletBridge;
public class Ticker
{
static int PAINT_TIMEOUT = 250;
static int PAINT_MOVE = 5;
static int PAINT_GAP = 10;
Ticker instance = null;
String text;
int textPos = 0;
int resetTextPosTo = -1;
public Ticker(String str)
{
if (str == null) {
throw new NullPointerException();
}
instance = this;
text = str;
}
public String getString()
{
return text;
}
public void setString(String str)
{
if (str == null) {
throw new NullPointerException();
}
text = str;
}
int getHeight()
{
return Font.getDefaultFont().getHeight();
}
int paintContent(Graphics g)
{
Font f = Font.getDefaultFont();
synchronized (instance) {
int stringWidth = f.stringWidth(text) + PAINT_GAP;
g.drawString(text, textPos, 0, Graphics.LEFT | Graphics.TOP);
int xPos = textPos + stringWidth;
DisplayAccess da = MIDletBridge.getMIDletAccess().getDisplayAccess();
while (xPos < da.getCurrent().getWidth()) {
g.drawString(text, xPos, 0, Graphics.LEFT | Graphics.TOP);
xPos += stringWidth;
}
if (textPos + stringWidth < 0) {
resetTextPosTo = textPos + stringWidth;
}
}
return f.getHeight();
}
}