com.codename1.ui.layouts.GridBagLayout Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.codename1.ui.layouts;
import com.codename1.io.Log;
import com.codename1.ui.Component;
import com.codename1.ui.Container;
import com.codename1.ui.geom.Dimension;
import com.codename1.ui.geom.Rectangle;
import com.codename1.ui.plaf.Style;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.Hashtable;
/**
* Codename One port of the infamous GridBagLayout based on the Apache Harmony code. For new applications
* we generally recommend a "native" Codename One layout such as {@link com.codename1.ui.table.TableLayout}
* and recommend avoiding this layout. Its here for developers who are accustomed to it and need to port existing code.
*
*
* 
*
*/
public class GridBagLayout extends Layout {
protected static final int MAXGRIDSIZE = 512;
protected static final int MINSIZE = 1;
protected static final int PREFERREDSIZE = 2;
// Direct modification is forbidden
protected volatile Hashtable comptable;
protected volatile GridBagConstraints defaultConstraints;
protected volatile GridBagLayoutInfo layoutInfo;
public volatile double columnWeights[];
public volatile double rowWeights[];
public volatile int columnWidths[];
public volatile int rowHeights[];
private ParentInfo lastParentInfo;
public GridBagLayout() {
comptable = new Hashtable();
defaultConstraints = new GridBagConstraints();
columnWeights = rowWeights = null;
columnWidths = rowHeights = null;
layoutInfo = null;
lastParentInfo = null;
}
public void addLayoutComponent(Object constraints, Component comp, Container c) {
GridBagConstraints cons;
if (constraints != null) {
if (!(constraints instanceof GridBagConstraints)) {
throw new IllegalArgumentException("AddLayoutComponent: constraint object must be GridBagConstraints"); //$NON-NLS-1$
}
cons = (GridBagConstraints) constraints;
} else {
if (comptable.containsKey(comp)) {
// don't replace constraints with default ones
return;
}
cons = defaultConstraints;
}
/*try {
//cons.verify();
} catch (IllegalArgumentException e) {
// awt.81=AddLayoutComponent: {0}
throw new IllegalArgumentException("AddLayoutComponent: " + e.getMessage()); //$NON-NLS-1$
}*/
GridBagConstraints consClone = (GridBagConstraints) cons.clone();
comptable.put(comp, consClone);
Container parent = comp.getParent();
updateParentInfo(parent, consClone);
}
public void removeLayoutComponent(Component comp) {
Container parent = comp.getParent();
if (parent != null) {
getParentInfo(parent).consTable.remove(comptable.get(comp));
}
comptable.remove(comp);
}
public Object getComponentConstraint(Component comp) {
GridBagConstraints cons = comptable.get(comp);
if (cons == null) {
cons = defaultConstraints;
comptable.put(comp, (GridBagConstraints) cons.clone());
}
return (GridBagConstraints) cons.clone();
}
public void setConstraints(Component comp, GridBagConstraints constraints) {
GridBagConstraints consClone = (GridBagConstraints) constraints.clone();
/*try {
// consClone.verify();
} catch (IllegalArgumentException e) {
// awt.85=SetConstraints: {0}
throw new IllegalArgumentException("SetConstraints: " + e.getMessage()); //$NON-NLS-1$
}*/
ParentInfo info = getParentInfo(comp.getParent());
if (info != null) {
GridBagConstraints cons = comptable.get(comp);
info.allConstraints.remove(info.consTable.get(cons)); //?
info.consTable.remove(cons);
}
// add component if it's not there yet
comptable.put(comp, consClone);
if (info != null) {
MixedConstraints mixCons = new MixedConstraints(consClone);
info.consTable.put(consClone, mixCons);
info.allConstraints.add(mixCons);
}
}
public void invalidateLayout(Container target) {
if (target == null) {
return;
}
getParentInfo(target).valid = false;
}
public Dimension getPreferredSize(Container parent) {
Style s = parent.getStyle();
ParentInfo info = lastParentInfo = getParentInfo(parent);
if (getComponentsNumber(parent) == 0) {
return new Dimension(s.getHorizontalPadding(), s.getVerticalPadding());
}
try {
validate(parent, info);
} catch (RuntimeException e) {
// awt.87=PreferredLayoutSize: {0}
Log.e(e);
throw new IllegalArgumentException("PreferredLayoutSize: " + e.getMessage()); //$NON-NLS-1$
}
Dimension d = info.grid.preferredSize();
d.setWidth(d.getWidth() + s.getHorizontalPadding());
d.setHeight(d.getHeight() + s.getVerticalPadding());
return d;
//return addInsets(grid.preferredSize(), parent);
}
public void layoutContainer(Container parent) {
ParentInfo info = lastParentInfo = getParentInfo(parent);
if (getComponentsNumber(parent) == 0) {
return;
}
try {
arrangeGridImpl(parent, info);
} catch (RuntimeException e) {
// awt.88=LayoutContainer: {0}
e.printStackTrace();
throw new IllegalArgumentException("LayoutContainer: " + e.getMessage()); //$NON-NLS-1$
}
setComponentsBounds(info);
}
public int[][] getLayoutDimensions() {
if (lastParentInfo == null) {
return new int[][] { new int[0], new int[0] };
}
return new int[][] { lastParentInfo.grid.getWidths(),
lastParentInfo.grid.getHeights() };
}
public double[][] getLayoutWeights() {
if (lastParentInfo == null) {
return new double[][] { new double[0], new double[0] };
}
return lastParentInfo.grid.getWeights();
}
/*public Point location(int x, int y) {
toolkit.lockAWT();
try {
if (lastParentInfo == null) {
return new Point();
}
return lastParentInfo.grid.location(x, y, lastParentInfo.orientation
.isLeftToRight());
} finally {
toolkit.unlockAWT();
}
}
protected Dimension GetMinSize(Container parent, GridBagLayoutInfo info) {
toolkit.lockAWT();
try {
int w = 0;
int h = 0;
for (int i = 0; i < MAXGRIDSIZE; i++) {
w += info.widths[i];
h += info.heights[i];
}
return new Dimension(w, h);
} finally {
toolkit.unlockAWT();
}
}
protected GridBagLayoutInfo GetLayoutInfo(Container parent, int sizeflag) {
toolkit.lockAWT();
try {
ParentInfo parentInfo = getParentInfo(parent);
if (sizeflag == PREFERREDSIZE) {
return new GridBagLayoutInfo(parentInfo.grid.lookupPrefWidths(),
parentInfo.grid.lookupPrefHeights());
}
// MINSIZE
return new GridBagLayoutInfo(parentInfo.grid.lookupMinWidths(), parentInfo.grid
.lookupMinHeights());
} finally {
toolkit.unlockAWT();
}
}*/
protected void ArrangeGrid(Container parent) {
ParentInfo info = lastParentInfo = getParentInfo(parent);
if (getComponentsNumber(parent) == 0) {
return;
}
try {
arrangeGridImpl(parent, info);
} catch (RuntimeException e) {
// awt.86=MinimumLayoutSize: {0}
e.printStackTrace();
throw new IllegalArgumentException("MinimumLayoutSize: " + e.getMessage()); //$NON-NLS-1$
}
}
protected GridBagConstraints lookupConstraints(Component comp) {
GridBagConstraints cons = comptable.get(comp);
if (cons == null) {
// if comp is not in the layout, return a copy of default constraints
cons = (GridBagConstraints) defaultConstraints.clone();
}
return cons;
}
protected void adjustForGravity(GridBagConstraints constraints, Rectangle r) {
AdjustForGravity(constraints, r);
}
protected void arrangeGrid(Container parent) {
ArrangeGrid(parent);
}
/*protected GridBagLayoutInfo getLayoutInfo(Container parent, int sizeflag) {
return GetLayoutInfo(parent, sizeflag);
}
protected Dimension getMinSize(Container parent, GridBagLayoutInfo info) {
toolkit.lockAWT();
try {
return GetMinSize(parent, info);
} finally {
toolkit.unlockAWT();
}
}*/
protected void AdjustForGravity(GridBagConstraints constraints, Rectangle r) {
/*try {
// ((GridBagConstraints) constraints).verify();
} catch (IllegalArgumentException e) {
// awt.8C={0}
throw new IllegalArgumentException("AdjustForGravity: " + e.getMessage()); //$NON-NLS-1$
}*/
//Don't get parent as param, so have to use older info if exists
if (layoutInfo == null) {
r.setBounds(0, 0, 0, 0);
return;
}
GridBagConstraints consClone = (GridBagConstraints) constraints.clone();
consClone.fill = GridBagConstraints.BOTH;
ComponentSide horSide = new ComponentSide();
ComponentSide vertSide = new ComponentSide();
Dimension dummySize = new Dimension(0, 0);
initHorCompSide(horSide, consClone, dummySize, dummySize, lastParentInfo);
initVertCompSide(vertSide, consClone, dummySize, dummySize, lastParentInfo);
calculateComponentBounds(horSide, vertSide, r, lastParentInfo.grid);
}
private ParentInfo getParentInfo(Container parent) {
if (parent == null) {
return null;
}
ParentInfo pi = (ParentInfo)parent.getClientProperty("cn1$gridBagLayoutData");
if(pi == null) {
pi = new ParentInfo();
parent.putClientProperty("cn1$gridBagLayoutData", pi);
}
return pi;
}
private void arrangeGridImpl(Container parent, ParentInfo info) {
validate(parent, info);
// Do not check clientRect for emptiness. Grid must be updated anyway
Rectangle clientRect = new Rectangle(0, 0, parent.getWidth(), parent.getHeight());
info.grid.fit2Client(clientRect);
}
private void setComponentsBounds(ParentInfo info) {
for (int i = 0; i < info.components.length; i++) {
Rectangle r = new Rectangle();
calculateComponentBounds(info.horCompSides[i], info.vertCompSides[i], r, info.grid);
info.components[i].setX(r.getX());
info.components[i].setY(r.getY());
info.components[i].setWidth(r.getSize().getWidth());
info.components[i].setHeight(r.getSize().getHeight());
}
}
private void calculateComponentBounds(ComponentSide horSide, ComponentSide vertSide,
Rectangle r, Grid grid) {
Rectangle dispArea = grid.componentDisplayArea(horSide, vertSide);
r.setWidth(fillDisplaySide(dispArea.getWidth(), horSide));
r.setHeight(fillDisplaySide(dispArea.getHeight(), vertSide));
r.setX(anchorComponentSide(dispArea.getX(), dispArea.getWidth(), horSide, r.getWidth()));
r.setY(anchorComponentSide(dispArea.getY(), dispArea.getHeight(), vertSide, r.getHeight()));
}
private int fillDisplaySide(int dispLength, ComponentSide compSide) {
int l = Math.max(dispLength - compSide.start_inset - compSide.end_inset, 0);
if (l < compSide.minLength) {
l = Math.min(compSide.minLength, dispLength);
} else if (!compSide.stretch) {
l = Math.min(l, compSide.prefLength);
}
return l;
}
private int anchorComponentSide(int dispStart, int dispLength, ComponentSide compSide,
int compLength) {
// if (compLength == 0) {
// return 0;
// }
int insDispLength = dispLength - compSide.start_inset - compSide.end_inset;
if (compLength <= insDispLength) {
int s = dispStart + compSide.start_inset;
switch (compSide.position) {
case ComponentSide.POS_START:
break;
case ComponentSide.POS_CENTER:
s += (insDispLength - compLength) / 2;
break;
case ComponentSide.POS_END:
s += insDispLength - compLength;
break;
}
return s;
}
float insetFactor = (float) (dispLength - compLength)
/ (float) (compSide.start_inset + compSide.end_inset);
return (dispStart + (int) (compSide.start_inset * insetFactor));
}
private void initHorCompSide(ComponentSide side, GridBagConstraints cons,
Dimension minSize, Dimension prefSize, ParentInfo info) {
MixedConstraints mixCons = info.consTable.get(cons);
side.gridStart = mixCons.mapped.getX();
side.gridLength = mixCons.mapped.getSize().getWidth();
side.weight = cons.weightx;
side.start_inset = cons.insets.left;
side.end_inset = cons.insets.right;
int anchor = translateRelativeAnchor(cons.anchor, !info.orientation);
switch (anchor) {
case GridBagConstraints.NORTHWEST:
case GridBagConstraints.WEST:
case GridBagConstraints.SOUTHWEST:
side.position = ComponentSide.POS_START;
break;
case GridBagConstraints.NORTH:
case GridBagConstraints.CENTER:
case GridBagConstraints.SOUTH:
side.position = ComponentSide.POS_CENTER;
break;
default:
side.position = ComponentSide.POS_END;
}
if ((cons.fill == GridBagConstraints.BOTH)
|| (cons.fill == GridBagConstraints.HORIZONTAL)) {
side.stretch = true;
} else {
side.stretch = false;
}
side.minLength = minSize.getWidth() + cons.ipadx;
side.prefLength = prefSize.getWidth() + cons.ipadx;
}
private void initVertCompSide(ComponentSide side, GridBagConstraints cons,
Dimension minSize, Dimension prefSize, ParentInfo info) {
MixedConstraints mixCons = info.consTable.get(cons);
side.gridStart = mixCons.mapped.getY();
side.gridLength = mixCons.mapped.getSize().getHeight();
side.weight = cons.weighty;
side.start_inset = cons.insets.top;
side.end_inset = cons.insets.bottom;
int anchor = translateRelativeAnchor(cons.anchor, !info.orientation);
switch (anchor) {
case GridBagConstraints.NORTHWEST:
case GridBagConstraints.NORTH:
case GridBagConstraints.NORTHEAST:
side.position = ComponentSide.POS_START;
break;
case GridBagConstraints.WEST:
case GridBagConstraints.CENTER:
case GridBagConstraints.EAST:
side.position = ComponentSide.POS_CENTER;
break;
default:
side.position = ComponentSide.POS_END;
}
if ((cons.fill == GridBagConstraints.BOTH)
|| (cons.fill == GridBagConstraints.VERTICAL)) {
side.stretch = true;
} else {
side.stretch = false;
}
side.minLength = minSize.getHeight() + cons.ipady;
side.prefLength = prefSize.getHeight() + cons.ipady;
}
private int translateRelativeAnchor(int relAnchor, boolean l2r) {
int absAnchor = relAnchor;
switch (relAnchor) {
case GridBagConstraints.PAGE_START:
absAnchor = GridBagConstraints.NORTH;
break;
case GridBagConstraints.PAGE_END:
absAnchor = GridBagConstraints.SOUTH;
break;
case GridBagConstraints.LINE_START:
absAnchor = l2r ? GridBagConstraints.WEST : GridBagConstraints.EAST;
break;
case GridBagConstraints.LINE_END:
absAnchor = l2r ? GridBagConstraints.EAST : GridBagConstraints.WEST;
break;
case GridBagConstraints.FIRST_LINE_START:
absAnchor = l2r ? GridBagConstraints.NORTHWEST : GridBagConstraints.NORTHEAST;
break;
case GridBagConstraints.FIRST_LINE_END:
absAnchor = l2r ? GridBagConstraints.NORTHEAST : GridBagConstraints.NORTHWEST;
break;
case GridBagConstraints.LAST_LINE_START:
absAnchor = l2r ? GridBagConstraints.SOUTHWEST : GridBagConstraints.SOUTHEAST;
break;
case GridBagConstraints.LAST_LINE_END:
absAnchor = l2r ? GridBagConstraints.SOUTHEAST : GridBagConstraints.SOUTHWEST;
break;
}
return absAnchor;
}
private void validate(Container parent, ParentInfo info) {
if (info.valid) {
return;
}
info.valid = true;
resetCache(parent, info);
info.orientation = parent.isRTL();
Dimension maxSize = initCompsArray(parent, info.components);
new RelativeTranslator(maxSize.getWidth(), maxSize.getHeight()).translate(info);
initCompSides(info);
info.grid.validate(info);
if (layoutInfo == null) {
layoutInfo = new GridBagLayoutInfo(info.grid.lookupWidths(), info.grid
.lookupHeights());
} else {
layoutInfo.update(info.grid.lookupWidths(), info.grid.lookupHeights());
}
}
private void initCompSides(ParentInfo info) {
for (int i = 0; i < info.components.length; i++) {
Component comp = info.components[i];
info.horCompSides[i] = new ComponentSide();
initHorCompSide(info.horCompSides[i], comptable.get(comp), comp.getPreferredSize(), //comp.getMinimumSize(),
comp.getPreferredSize(), info);
info.vertCompSides[i] = new ComponentSide();
initVertCompSide(info.vertCompSides[i], comptable.get(comp), comp.getPreferredSize(), //comp.getMinimumSize(),
comp.getPreferredSize(), info);
}
}
private Dimension initCompsArray(Container parent, Component[] components) {
int maxW = 0;
int maxH = 0;
int i = 0;
for (Component comp : comptable.keySet()) {
GridBagConstraints cons = comptable.get(comp);
if ((comp.getParent() == parent) && comp.isVisible()) {
components[i++] = comp;
}
if ((cons.gridx != GridBagConstraints.RELATIVE)
&& (cons.gridy != GridBagConstraints.RELATIVE)) {
maxW = Math.max(maxW, cons.gridx + cons.gridwidth);
maxH = Math.max(maxH, cons.gridy + cons.gridheight);
}
}
return new Dimension(maxW, maxH);
}
private int getComponentsNumber(Container parent) {
int componentsNumber = 0;
for (Component comp : comptable.keySet()) {
if ((comp.getParent() == parent) && comp.isVisible()) {
componentsNumber++;
}
}
return componentsNumber;
}
private void resetCache(Container parent, ParentInfo info) {
int componentsNumber = getComponentsNumber(parent);
info.components = new Component[componentsNumber];
info.horCompSides = new ComponentSide[componentsNumber];
info.vertCompSides = new ComponentSide[componentsNumber];
updateParentInfo(parent);
}
private void updateParentInfo(Container parent, GridBagConstraints gbc) {
if (parent == null) {
return;
}
ParentInfo info = getParentInfo(parent);
if (!info.consTable.containsKey(gbc)) {
MixedConstraints mixCons = new MixedConstraints(gbc);
info.consTable.put(gbc, mixCons);
info.allConstraints.add(mixCons);
}
}
private void updateParentInfo(Container parent) {
int count = parent.getComponentCount();
for (int iter = 0 ; iter < count ; iter++) {
Component element = parent.getComponentAt(iter);
GridBagConstraints gbc = comptable.get(element);
updateParentInfo(parent, gbc);
}
}
private class RelativeTranslator {
private int curY; //Left-to-right (or vice versa)
private final int curX[]; // up-to-down
private int maxW; //Common for relative
private int maxH; // and absolute components
private boolean relWComp;
private boolean relHComp;
private int relEndY;
private int relEndX;
public RelativeTranslator(int maxW, int maxH) {
this.maxW = maxW;
this.maxH = maxH;
curY = 0;
curX = new int[MAXGRIDSIZE]; //All = 0, hope so
relWComp = false;
relHComp = false;
relEndY = 0;
relEndX = 0;
}
public void translate(ParentInfo info) {
spreadComponents(info.allConstraints);
recalculateRemainders(info.allConstraints);
applyOrientation(info);
}
private void spreadComponents(ArrayList allConstraints) {
for (int i = 0; i < allConstraints.size(); i++) {
MixedConstraints mixCons = allConstraints.get(i);
// awt.8D=
//assert !((relWComp && (mixCons.initial.getWidth() != GridBagConstraints.REMAINDER)) || (relHComp && (mixCons.initial.getSize().getHeight() != GridBagConstraints.REMAINDER))) : "REMINDER component expected after RELATIVE one"; //$NON-NLS-1$
if (curY == MAXGRIDSIZE) {
// awt.8E=
throw new RuntimeException("component is out of grid's range"); //$NON-NLS-1$
}
translateHor(mixCons, translateVert(mixCons, i, allConstraints));
}
// awt.8D=
//assert !(relWComp || relHComp) : "REMINDER component expected after RELATIVE one"; //$NON-NLS-1$
}
private void applyOrientation(ParentInfo info) {
if (info.orientation) {
for (int i = 0; i < info.allConstraints.size(); i++) {
MixedConstraints mixCons = info.allConstraints.get(i);
if (mixCons.relative) {
mixCons.mapped.setX(maxW - mixCons.mapped.getX() - mixCons.mapped.getWidth());
}
}
}
}
private int translateVert(MixedConstraints mixCons, int i,
ArrayList allConstraints) {
int endY;
if (mixCons.initial.getY() != GridBagConstraints.RELATIVE) {
curY = mixCons.initial.getY();
}
mixCons.mapped.setY(curY);
mixCons.mapped.setHeight(Math.max(mixCons.initial.getHeight(), 1));
if (mixCons.initial.getHeight() == GridBagConstraints.REMAINDER) {
if (relHComp) {
mixCons.mapped.setY(allConstraints.get(i - 1).mapped.getY() + 1);
relHComp = false;
}
endY = MAXGRIDSIZE;
} else if (mixCons.initial.getHeight() == GridBagConstraints.RELATIVE) {
relHComp = true;
if (mixCons.initial.getWidth() != GridBagConstraints.REMAINDER) {
relEndX = curX[curY] + mixCons.initial.getWidth();
} else {
relEndX = MAXGRIDSIZE;
}
endY = mixCons.mapped.getY() + 1;
} else {
endY = mixCons.mapped.getY() + mixCons.mapped.getHeight();
}
if (endY > MAXGRIDSIZE) {
// awt.8E=
throw new RuntimeException("component is out of grid's range"); //$NON-NLS-1$
}
maxH = Math.max(maxH, mixCons.mapped.getY() + mixCons.mapped.getHeight());
return endY;
}
private void translateHor(MixedConstraints mixCons, int endY) {
int trueCurY = curY;
if (mixCons.initial.getX() != GridBagConstraints.RELATIVE) {
for (;; trueCurY++) {
if (trueCurY == MAXGRIDSIZE) {
// awt.8E=
throw new RuntimeException("component is out of grid's range"); //$NON-NLS-1$
}
if (curX[trueCurY] <= mixCons.initial.getX()) {
break;
}
}
mixCons.mapped.setY(trueCurY);
mixCons.mapped.setX(mixCons.initial.getX());
endY += trueCurY - curY;
} else {
mixCons.mapped.setX(curX[trueCurY]);
}
mixCons.mapped.setWidth(Math.max(mixCons.initial.getWidth(), 1));
if (mixCons.initial.getWidth() == GridBagConstraints.REMAINDER) {
if (relWComp) {
endY = Math.max(endY, relEndY);
relWComp = false;
relEndY = 0;
}
curY = endY;
} else if (mixCons.initial.getWidth() == GridBagConstraints.RELATIVE) {
relWComp = true;
relEndY = endY;
curX[curY]++;
} else {
if (!relHComp) {
int endX = Math.max(curX[trueCurY] + mixCons.mapped.getWidth(), relEndX);
for (int j = trueCurY; j < endY; j++) {
curX[j] = endX;
}
relEndX = 0;
}
}
if ((mixCons.mapped.getX() + mixCons.mapped.getWidth()) > MAXGRIDSIZE) {
// awt.8E=
throw new RuntimeException("component is out of grid's range"); //$NON-NLS-1$
}
maxW = Math.max(maxW, mixCons.mapped.getX() + mixCons.mapped.getWidth());
// if (curYBackup >= 0) { //FIX
// curY = curYBackup;
// curYBackup = -1;
// }
}
private void recalculateRemainders(ArrayList allConstraints) {
for (int i = 0; i < allConstraints.size(); i++) {
MixedConstraints mixCons = allConstraints.get(i);
if (mixCons.initial.getWidth() == GridBagConstraints.REMAINDER) {
mixCons.mapped.setWidth(maxW - mixCons.mapped.getX());
} else if (mixCons.initial.getWidth() == GridBagConstraints.RELATIVE) {
int reserve = maxW - mixCons.mapped.getX() - 2;
if (reserve > 0) {
mixCons.mapped.setWidth(mixCons.mapped.getWidth() + reserve);
if ((i + 1) < allConstraints.size()) {
Rectangle r = allConstraints.get(i + 1).mapped;
r.setX(r.getX() + reserve);
}
}
}
if (mixCons.initial.getHeight() == GridBagConstraints.REMAINDER) {
mixCons.mapped.setHeight(maxH - mixCons.mapped.getY());
} else if (mixCons.initial.getHeight() == GridBagConstraints.RELATIVE) {
int reserve = maxH - mixCons.mapped.getX() - 2;
mixCons.mapped.setHeight(mixCons.mapped.getHeight() + reserve);
if ((i + 1) < allConstraints.size()) {
Rectangle r = allConstraints.get(i + 1).mapped;
r.setY(r.getY() + reserve);
}
}
}
}
}
private class ComponentSide {
public static final int POS_START = 1;
public static final int POS_CENTER = 2;
public static final int POS_END = 3;
public int gridStart;
public int gridLength;
public int start_inset;
public int end_inset;
public int position;
public int minLength;
public int prefLength;
public double weight;
public boolean stretch;
}
private class Grid {
private final GridSide cols = new GridSide();
private final GridSide rows = new GridSide();
public void validate(ParentInfo info) {
cols.validate(info.horCompSides, columnWidths, columnWeights);
rows.validate(info.vertCompSides, rowHeights, rowWeights);
}
public Dimension minimumSize() {
return new Dimension(cols.getMinLength(), rows.getMinLength());
}
public Dimension preferredSize() {
return new Dimension(cols.getPrefLength(), rows.getPrefLength());
}
public Rectangle componentDisplayArea(ComponentSide horSide, ComponentSide vertSide) {
Segment hor = cols.componentDisplaySide(horSide.gridStart, horSide.gridLength);
Segment vert = rows.componentDisplaySide(vertSide.gridStart, vertSide.gridLength);
return new Rectangle(hor.start, vert.start, hor.length, vert.length);
}
public void fit2Client(Rectangle clientRect) {
Segment horSeg = new Segment(clientRect.getX(), clientRect.getWidth());
cols.fit2Client(horSeg);
clientRect.setX(horSeg.start);
clientRect.setWidth(horSeg.length);
Segment vertSeg = new Segment(clientRect.getY(), clientRect.getHeight());
rows.fit2Client(vertSeg);
clientRect.setY(vertSeg.start);
clientRect.setHeight(vertSeg.length);
}
public int[] getWidths() {
return cols.getLengths();
}
public int[] getHeights() {
return rows.getLengths();
}
public int[] lookupWidths() {
return cols.lookupLengths();
}
public int[] lookupHeights() {
return rows.lookupLengths();
}
public int[] lookupMinWidths() {
return cols.lookupMinLengths();
}
public int[] lookupMinHeights() {
return rows.lookupMinLengths();
}
public int[] lookupPrefWidths() {
return cols.lookupPrefLengths();
}
public int[] lookupPrefHeights() {
return rows.lookupPrefLengths();
}
public double[][] getWeights() {
return new double[][] { cols.getWeights(), rows.getWeights() };
}
/*public Point getOrigin() {
return new Point(cols.getOrigin(), rows.getOrigin());
}
public Point location(int x, int y, boolean l2r) {
int col = cols.location(x);
int row = Math.max(Math.min(rows.location(y), MAXGRIDSIZE - 1), 0);
if (col == MAXGRIDSIZE) {
col = l2r ? MAXGRIDSIZE - 1 : 0;
} else if (col == -1) {
col = l2r ? 0 : MAXGRIDSIZE - 1;
}
return new Point(col, row);
}*/
private class GridSide {
private final int coordinates[] = new int[MAXGRIDSIZE];
private final int lengths[] = new int[MAXGRIDSIZE];
/*Cashed data. Validation controlled by parent class*/
private final int minLengths[] = new int[MAXGRIDSIZE];
private int minLength = 0;
private final int prefLengths[] = new int[MAXGRIDSIZE];
private int prefLength = 0;
private final double weights[] = new double[MAXGRIDSIZE];
private double weight = 0.;
private int weightlessPrefLength = 0;
private int weightlessMinLength = 0;
private int weightyPartsNum = 0;
public void validate(ComponentSide compSides[], int lengthsOverride[],
double weightsOverride[]) {
resetCache();
spreadComponents(compSides);
applyOverrides(lengthsOverride, weightsOverride);
calculateIntegrals();
}
public int getMinLength() {
return minLength;
}
public int getPrefLength() {
return prefLength;
}
public Segment componentDisplaySide(int startPart, int partsNum) {
int l = 0;
for (int part = startPart; part < (startPart + partsNum); part++) {
l += lengths[part];
}
return new Segment(coordinates[startPart], l);
}
public void fit2Client(Segment clientSide) {
int start = clientSide.start;
if (clientSide.length > weightlessPrefLength) {
if (weight > 0.) {
if (clientSide.length >= prefLength) {
divideExtraWeightyLength(clientSide);
} else {
//divideExtraLength(clientSide);
divideInsufWeightyLength(clientSide);
}
} else {
start = centerSide(clientSide);
}
} else if (weightlessMinLength > clientSide.length) {
divideInsufficientLength(clientSide);
} else {
// divideSufficientLength(clientSide);
divideInsufWeightyLength(clientSide);
}
calculateCoordinates(start);
}
public int[] getLengths() {
int res[] = new int[MAXGRIDSIZE];
for (int i = 0; i < MAXGRIDSIZE; i++) {
res[i] = lengths[i];
}
return res;
}
public int[] lookupLengths() {
return lengths;
}
public int[] lookupMinLengths() {
return minLengths;
}
public int[] lookupPrefLengths() {
return prefLengths;
}
public double[] getWeights() {
double res[] = new double[MAXGRIDSIZE];
for (int i = 0; i < MAXGRIDSIZE; i++) {
res[i] = weights[i];
}
return res;
}
public int getOrigin() {
return coordinates[0];
}
public int location(int p) {
if (p < coordinates[0]) {
return -1;
} else if (p >= (coordinates[MAXGRIDSIZE - 1] + lengths[MAXGRIDSIZE - 1])) {
return MAXGRIDSIZE;
}
int i = 0;
while (!((coordinates[i] <= p) && ((coordinates[i] + lengths[i]) > p))) {
i++;
}
return i;
}
private void calculateIntegrals() {
for (int i = 0; i < MAXGRIDSIZE; i++) {
prefLength += prefLengths[i];
minLength += minLengths[i];
weight += weights[i];
if (weights[i] == 0.) {
weightlessPrefLength += prefLengths[i];
weightlessMinLength += minLengths[i];
weightyPartsNum++;
}
}
}
private void applyOverrides(int lengthsOverride[], double weightsOverride[]) {
if (weightsOverride != null) {
if (weightsOverride.length > MAXGRIDSIZE) {
// awt.8F=Weights' overrides array is too long
throw new RuntimeException("Weights' overrides array is too long"); //$NON-NLS-1$
}
for (int i = 0; i < weightsOverride.length; i++) {
weights[i] = Math.max(weights[i], weightsOverride[i]);
}
}
if (lengthsOverride != null) {
if (lengthsOverride.length > MAXGRIDSIZE) {
// awt.90=
throw new RuntimeException("Lengths' overrides array is too long"); //$NON-NLS-1$
}
for (int i = 0; i < lengthsOverride.length; i++) {
minLengths[i] = lengthsOverride[i];
prefLengths[i] = Math.max(prefLengths[i], lengthsOverride[i]);
}
}
}
private void spreadComponents(ComponentSide compSides[]) {
for (ComponentSide element : compSides) {
if (element.gridLength == 1) {
int insets = element.start_inset + element.end_inset;
spreadUnicellularComponent(element.gridStart, element.minLength
+ insets, element.prefLength + insets, element.weight);
}
}
for (ComponentSide element : compSides) {
if (element.gridLength > 1) {
int insets = element.start_inset + element.end_inset;
spreadMulticellularComponent(element.gridStart, element.gridLength,
element.minLength + insets, element.prefLength + insets,
element.weight);
}
}
}
private void spreadUnicellularComponent(int part, int minCompLength,
int prefCompLength, double compWeight) {
minLengths[part] = Math.max(minLengths[part], minCompLength);
prefLengths[part] = Math.max(prefLengths[part], prefCompLength);
weights[part] = Math.max(weights[part], compWeight);
}
private void spreadMulticellularComponent(int startPart, int partsNum,
int minCompLength, int prefCompLength, double compWeight) {
double sumWeight = spreadComponentWeight(weights, startPart, partsNum,
compWeight);
spreadComponentLength(minLengths, startPart, partsNum, minCompLength, sumWeight);
spreadComponentLength(prefLengths, startPart, partsNum, prefCompLength,
sumWeight);
}
private void resetCache() {
Arrays.fill(minLengths, 0);
minLength = 0;
Arrays.fill(prefLengths, 0);
prefLength = 0;
Arrays.fill(weights, 0.);
weight = 0.;
weightlessPrefLength = 0;
weightlessMinLength = 0;
weightyPartsNum = 0;
}
private void spreadComponentLength(int arr[], int startPart, int partsNum,
int compLength, double sumWeight) {
int rest = compLength;
int lastPart = startPart + partsNum - 1;
for (int part = startPart; part < lastPart; part++) {
rest -= arr[part];
}
if (sumWeight != 0.0) {
rest -= arr[lastPart];
// divide extra length using weights
int sharedExtraL = 0;
double accumWeight = 0.0;
for (int part = startPart; part <= lastPart; part++) {
accumWeight += weights[part];
int curExtraL = (int) (rest * (accumWeight / sumWeight)) - sharedExtraL;
arr[part] = Math.max(arr[part], arr[part] + curExtraL);
sharedExtraL += curExtraL;
}
} else {
// just put all extra
// length into the last part
arr[lastPart] = Math.max(arr[lastPart], rest);
}
}
private double spreadComponentWeight(double arr[], int startPart, int partsNum,
double compWeight) {
int lastPart = startPart + partsNum - 1;
double sumWeight = .0;
for (int part = startPart; part <= lastPart; part++) {
sumWeight += arr[part];
}
if ((compWeight > sumWeight) && (sumWeight > 0)) {
for (int part = startPart; part < (startPart + partsNum); part++) {
arr[part] = compWeight * arr[part] / sumWeight;
}
} else if (sumWeight == 0) {
arr[lastPart] = compWeight;
}
return sumWeight;
}
private void divideExtraWeightyLength(Segment clientSide) {
int extraL = clientSide.length - prefLength;
int sharedExtraL = 0;
double accumWeight = 0.;
for (int i = 0; i < MAXGRIDSIZE; i++) {
if (weights[i] > 0.) {
accumWeight += weights[i];
int curExtraL = (int) (extraL * (accumWeight / weight)) - sharedExtraL;
lengths[i] = prefLengths[i] + curExtraL;
sharedExtraL += curExtraL;
} else {
lengths[i] = prefLengths[i];
}
}
}
private void divideInsufWeightyLength(Segment clientSide) {
int extraL = clientSide.length - minLength;
int sharedExtraL = 0;
double accumWeight = 0.;
for (int i = 0; i < MAXGRIDSIZE; i++) {
if (weights[i] > 0.) {
accumWeight += weights[i];
int curExtraL = (int) (extraL * (accumWeight / weight)) - sharedExtraL;
lengths[i] = minLengths[i] + curExtraL;
sharedExtraL += curExtraL;
} else {
lengths[i] = minLengths[i];
}
}
}
private int centerSide(Segment clientSide) {
for (int i = 0; i < MAXGRIDSIZE; i++) {
lengths[i] = prefLengths[i];
}
return (clientSide.start + (clientSide.length - prefLength) / 2);
}
private void divideInsufficientLength(Segment clientSide) {
int sharedL = (weightlessMinLength - clientSide.length) / 2;
if (sharedL < 0) {
sharedL = 0;
}
for (int i = 0; i < MAXGRIDSIZE; i++) {
if (weights[i] > 0.) {
lengths[i] = 0;
} else {
int minL = minLengths[i];
if (sharedL >= minL) {
sharedL -= minL;
lengths[i] = 0;
} else {
lengths[i] = minL - sharedL;
sharedL = 0;
}
}
}
}
private void calculateCoordinates(int start) {
coordinates[0] = start;
for (int i = 1; i < MAXGRIDSIZE; i++) {
coordinates[i] = coordinates[i - 1] + lengths[i - 1];
}
}
}
}
private class Segment {
public int start;
public int length;
Segment(int start, int length) {
this.start = start;
this.length = length;
}
}
private class MixedConstraints {
public Rectangle initial; //Relative/Absolute
public Rectangle mapped; //Absolute
public boolean relative;
MixedConstraints(GridBagConstraints cons) {
initial = new Rectangle(cons.gridx, cons.gridy, cons.gridwidth, cons.gridheight);
mapped = new Rectangle();
relative = (cons.gridx == GridBagConstraints.RELATIVE)
|| (cons.gridy == GridBagConstraints.RELATIVE);
}
}
private class ParentInfo {
final HashMap consTable; // Components' constraints to relative constraints
final ArrayList allConstraints; // Only mapped rectangle is a part of cache
final Grid grid;
boolean valid;
ComponentSide horCompSides[];
ComponentSide vertCompSides[];
Component components[]; // Hashtable is too slow
// true for RTL
boolean orientation;
ParentInfo() {
valid = false;
consTable = new HashMap();
allConstraints = new ArrayList();
grid = new Grid();
horCompSides = vertCompSides = null;
components = null;
}
}
}
class GridBagLayoutInfo {
int widths[];
int heights[];
GridBagLayoutInfo(int widths[], int heights[]) {
this.widths = widths;
this.heights = heights;
}
void update(int widths[], int heights[]) {
this.widths = widths;
this.heights = heights;
}
}