/*
* TV-Browser
* Copyright (C) 04-2003 Martin Oberhauser (martin_oat@yahoo.de)
*
* This program 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 program 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 program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* CVS information:
* $RCSfile$
* $Source$
* $Date: 2010-06-28 19:33:48 +0200 (Mon, 28 Jun 2010) $
* $Author: bananeweizen $
* $Revision: 6662 $
*/
package util.ui;
import java.awt.Component;
import java.awt.Container;
import java.awt.Dimension;
import java.awt.Insets;
import java.awt.LayoutManager;
/**
* A layout similar to the {@link java.awt.GridLayout}, whose column widths and
* row heights can variate. so a column with only narrow components is narrower
* than one with large components.
*
* @author Til Schneider, www.murfman.de
*/
public class TabLayout implements LayoutManager {
// Anzahl der Spalten, Abstand zwischen den Komponenten in x- und
// y-Richtung
protected int anzahlSpalten, xAbs, yAbs;
protected boolean dontMaximizeComponents;
/**
* Constructs a TabLayout.
*
* @param columns The number of columns.
*/
public TabLayout(int columns) {
this(columns, false);
}
/**
* Constructs a TabLayout.
*
* @param columns The number of columns.
* @param xAbs horizontal gap between the components
* @param yAbs vertical gap between the components
*/
public TabLayout(int columns, int xAbs, int yAbs) {
this(columns, xAbs, yAbs, false);
}
/**
* Constructs a TabLayout.
*
* @param columns The number of columns.
* @param dontMaximizeComponents If true the Components of a Container using this
* TabLayout are not maximized to fit in their cell but have a maximum
* size equal to their preferred size.
*/
public TabLayout(int columns, boolean dontMaximizeComponents) {
this(columns, 3, 3, dontMaximizeComponents);
}
/**
* Constructs a TabLayout.
*
* @param columns The number of columns.
* @param xAbs horizontal gap between the components
* @param yAbs vertical gap between the components
* @param dontMaximizeComponents If true the Components of a Container using this
* TabLayout are not maximized to fit in their cell but have a maximum
* size equal to their preferred size.
*/
public TabLayout(int columns, int xAbs, int yAbs, boolean dontMaximizeComponents) {
if (columns < 1) {
columns = 1;
}
this.anzahlSpalten = columns;
this.dontMaximizeComponents = dontMaximizeComponents;
this.xAbs = xAbs;
this.yAbs = yAbs;
}
Component[][] getComponentFeld(Container c) {
int anzahlComp = c.getComponentCount();
int hoehe = (int)Math.ceil((double)anzahlComp/anzahlSpalten);
Component[][] comp = new Component[anzahlSpalten][hoehe>0 ? hoehe : 1];
int aktSpalte = 0, aktZeile = 0;
for (int i = 0; i<anzahlComp; i++) {
comp[aktSpalte][aktZeile] = c.getComponent(i);
if (++aktSpalte>=anzahlSpalten) { aktSpalte = 0; aktZeile++; }
}
return comp;
}
int[] getBreiten(int gesBreite, Component[][] comp) {
int[] breite = new int[comp.length];
for (int i = 0;i<breite.length;i++) {
breite[i] = 0;
}
for (int y = 0;y<comp[0].length;y++) {
for (int x = 0;x<comp.length;x++) {
if (comp[x][y]!=null && comp[x][y].isVisible()) {
Dimension d = comp[x][y].getPreferredSize();
breite[x] = Math.max(breite[x], d.width);
}
}
}
// Skalierung
if (gesBreite>0) {
int prefGesBreite = -xAbs;
for (int element : breite) {
prefGesBreite += element + xAbs;
}
double skal = ((double)gesBreite)/prefGesBreite;
for (int i = 0;i<breite.length;i++) {
breite[i] = (int)(breite[i]*skal);
}
}
return breite;
}
int[] getHoehen(int gesHoehe, Component[][] comp) {
int[] hoehe = new int[comp[0].length];
for (int i = 0;i<hoehe.length;i++) {
hoehe[i] = 0;
}
for (int y = 0;y<comp[0].length;y++) {
for (Component[] element : comp) {
if (element[y]!=null && element[y].isVisible()) {
Dimension d = element[y].getPreferredSize();
hoehe[y] = Math.max(hoehe[y], d.height);
}
}
}
// Skalierung
if (gesHoehe>0) {
int prefGesHoehe = -yAbs;
for (int element : hoehe) {
prefGesHoehe += element + yAbs;
}
double ySkal = ((double)gesHoehe)/prefGesHoehe;
for (int i = 0;i<hoehe.length;i++) {
hoehe[i] = (int)(hoehe[i]*ySkal);
}
}
return hoehe;
}
// implements LayoutManager
public void addLayoutComponent(String name, Component comp) {
}
public void removeLayoutComponent(Component comp) {
}
public Dimension preferredLayoutSize(Container c) {
synchronized (c.getTreeLock()) {
Component[][] comp = getComponentFeld(c);
int[] breite = getBreiten(0, comp);
int[] hoehe = getHoehen(0, comp);
Dimension dim = new Dimension(-xAbs, -yAbs);
for (int element : breite) {
dim.width += element + xAbs;
}
for (int element : hoehe) {
dim.height += element + yAbs;
}
Insets insets = c.getInsets();
dim.width += insets.left + insets.right;
dim.height += insets.top + insets.bottom;
return dim;
}
}
public Dimension minimumLayoutSize(Container target) {
return preferredLayoutSize(target);
}
public void layoutContainer(Container target) {
synchronized (target.getTreeLock()) {
Insets insets = target.getInsets();
Component[][] comp = getComponentFeld(target);
int[] breite = getBreiten(target.getSize().width
-insets.left-insets.right,comp);
int[] hoehe = getHoehen(target.getSize().height
-insets.top-insets.bottom,comp);
int[] xPos = new int[comp.length];
int[] yPos = new int[comp[0].length];
xPos[0] = insets.left; yPos[0] = insets.top;
for (int i = 1; i < xPos.length; i++) {
xPos[i] = xPos[i-1] + breite[i-1] + xAbs;
}
for (int i = 1; i < yPos.length; i++) {
yPos[i] = yPos[i-1] + hoehe[i-1] + yAbs;
}
int currBreite, currHoehe;
Dimension currPreferredSize;
for (int y = 0; y < comp[0].length; y++) {
for (int x = 0; x < comp.length; x++) {
if ((comp[x][y] != null) && comp[x][y].isVisible()) {
currBreite = breite[x];
currHoehe = hoehe[y];
if (dontMaximizeComponents) {
currPreferredSize = comp[x][y].getPreferredSize();
currBreite = Math.min(currBreite, currPreferredSize.width);
currHoehe = Math.min(currHoehe, currPreferredSize.height);
}
comp[x][y].setSize(currBreite, currHoehe);
comp[x][y].setLocation(xPos[x], yPos[y]);
}
}
}
}
}
}