/*******************************************************************************
* Copyright (c) 2000, 2010 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
* Tom Schindl<tom.schindl@bestsolution.at> - ported to JavaFX
*******************************************************************************/
package at.bestsolution.efxclipse.runtime.panels;
import javafx.beans.property.SimpleBooleanProperty;
import javafx.beans.property.SimpleIntegerProperty;
import javafx.beans.value.WritableBooleanValue;
import javafx.beans.value.WritableIntegerValue;
import javafx.scene.Node;
public class GridLayoutPane extends AbstractLayoutPane<GridLayoutPane.GridData> {
private WritableIntegerValue numColumnsProperty = new SimpleIntegerProperty(this, "columns", 1);
private WritableBooleanValue makeColumnsEqualWidthProperty = new SimpleBooleanProperty(this,"makeColumnsEqualWidth",false);
private WritableIntegerValue marginWidth = new SimpleIntegerProperty(this, "marginWidth", 5);
private WritableIntegerValue marginHeight = new SimpleIntegerProperty(this, "marginHeight", 5);
private WritableIntegerValue marginLeft = new SimpleIntegerProperty(this, "marginLeft", 0);
private WritableIntegerValue marginTop = new SimpleIntegerProperty(this, "marginTop", 0);
private WritableIntegerValue marginRight = new SimpleIntegerProperty(this, "marginRight", 0);
private WritableIntegerValue marginBottom = new SimpleIntegerProperty(this, "marginBottom", 0);
private WritableIntegerValue horizontalSpacing = new SimpleIntegerProperty(this, "horizontalSpacing", 5);
private WritableIntegerValue verticalSpacing = new SimpleIntegerProperty(this, "verticalSpacing", 5);
public static class GridData {
/**
* verticalAlignment specifies how controls will be positioned
* vertically within a cell.
*
* The default value is CENTER.
*
* Possible values are: <ul>
* <li>SWT.BEGINNING (or SWT.TOP): Position the control at the top of the cell</li>
* <li>SWT.CENTER: Position the control in the vertical center of the cell</li>
* <li>SWT.END (or SWT.BOTTOM): Position the control at the bottom of the cell</li>
* <li>SWT.FILL: Resize the control to fill the cell vertically</li>
* </ul>
*/
public int verticalAlignment = CENTER;
/**
* horizontalAlignment specifies how controls will be positioned
* horizontally within a cell.
*
* The default value is BEGINNING.
*
* Possible values are: <ul>
* <li>SWT.BEGINNING (or SWT.LEFT): Position the control at the left of the cell</li>
* <li>SWT.CENTER: Position the control in the horizontal center of the cell</li>
* <li>SWT.END (or SWT.RIGHT): Position the control at the right of the cell</li>
* <li>SWT.FILL: Resize the control to fill the cell horizontally</li>
* </ul>
*/
public int horizontalAlignment = BEGINNING;
/**
* widthHint specifies the preferred width in pixels. This value
* is the wHint passed into Control.computeSize(int, int, boolean)
* to determine the preferred size of the control.
*
* The default value is SWT.DEFAULT.
*
* @see Control#computeSize(int, int, boolean)
*/
public int widthHint = SWT_DEFAULT;
/**
* heightHint specifies the preferred height in pixels. This value
* is the hHint passed into Control.computeSize(int, int, boolean)
* to determine the preferred size of the control.
*
* The default value is SWT.DEFAULT.
*
* @see Control#computeSize(int, int, boolean)
*/
public int heightHint = SWT_DEFAULT;
/**
* horizontalIndent specifies the number of pixels of indentation
* that will be placed along the left side of the cell.
*
* The default value is 0.
*/
public int horizontalIndent = 0;
/**
* verticalIndent specifies the number of pixels of indentation
* that will be placed along the top side of the cell.
*
* The default value is 0.
*
* @since 3.1
*/
public int verticalIndent = 0;
/**
* horizontalSpan specifies the number of column cells that the control
* will take up.
*
* The default value is 1.
*/
public int horizontalSpan = 1;
/**
* verticalSpan specifies the number of row cells that the control
* will take up.
*
* The default value is 1.
*/
public int verticalSpan = 1;
/**
* <p>grabExcessHorizontalSpace specifies whether the width of the cell
* changes depending on the size of the parent Composite. If
* grabExcessHorizontalSpace is <code>true</code>, the following rules
* apply to the width of the cell:</p>
* <ul>
* <li>If extra horizontal space is available in the parent, the cell will
* grow to be wider than its preferred width. The new width
* will be "preferred width + delta" where delta is the extra
* horizontal space divided by the number of grabbing columns.</li>
* <li>If there is not enough horizontal space available in the parent, the
* cell will shrink until it reaches its minimum width as specified by
* GridData.minimumWidth. The new width will be the maximum of
* "minimumWidth" and "preferred width - delta", where delta is
* the amount of space missing divided by the number of grabbing columns.</li>
* <li>If the parent is packed, the cell will be its preferred width
* as specified by GridData.widthHint.</li>
* <li>If the control spans multiple columns and there are no other grabbing
* controls in any of the spanned columns, the last column in the span will
* grab the extra space. If there is at least one other grabbing control
* in the span, the grabbing will be spread over the columns already
* marked as grabExcessHorizontalSpace.</li>
* </ul>
*
* <p>The default value is false.</p>
*
* @see GridData#minimumWidth
* @see GridData#widthHint
*/
public boolean grabExcessHorizontalSpace = false;
/**
* <p>grabExcessVerticalSpace specifies whether the height of the cell
* changes depending on the size of the parent Composite. If
* grabExcessVerticalSpace is <code>true</code>, the following rules
* apply to the height of the cell:</p>
* <ul>
* <li>If extra vertical space is available in the parent, the cell will
* grow to be taller than its preferred height. The new height
* will be "preferred height + delta" where delta is the extra
* vertical space divided by the number of grabbing rows.</li>
* <li>If there is not enough vertical space available in the parent, the
* cell will shrink until it reaches its minimum height as specified by
* GridData.minimumHeight. The new height will be the maximum of
* "minimumHeight" and "preferred height - delta", where delta is
* the amount of space missing divided by the number of grabbing rows.</li>
* <li>If the parent is packed, the cell will be its preferred height
* as specified by GridData.heightHint.</li>
* <li>If the control spans multiple rows and there are no other grabbing
* controls in any of the spanned rows, the last row in the span will
* grab the extra space. If there is at least one other grabbing control
* in the span, the grabbing will be spread over the rows already
* marked as grabExcessVerticalSpace.</li>
* </ul>
*
* <p>The default value is false.</p>
*
* @see GridData#minimumHeight
* @see GridData#heightHint
*/
public boolean grabExcessVerticalSpace = false;
/**
* minimumWidth specifies the minimum width in pixels. This value
* applies only if grabExcessHorizontalSpace is true. A value of
* SWT.DEFAULT means that the minimum width will be the result
* of Control.computeSize(int, int, boolean) where wHint is
* determined by GridData.widthHint.
*
* The default value is 0.
*
* @since 3.1
* @see Control#computeSize(int, int, boolean)
* @see GridData#widthHint
*/
public int minimumWidth = 0;
/**
* minimumHeight specifies the minimum height in pixels. This value
* applies only if grabExcessVerticalSpace is true. A value of
* SWT.DEFAULT means that the minimum height will be the result
* of Control.computeSize(int, int, boolean) where hHint is
* determined by GridData.heightHint.
*
* The default value is 0.
*
* @since 3.1
* @see Control#computeSize(int, int, boolean)
* @see GridData#heightHint
*/
public int minimumHeight = 0;
/**
* exclude informs the layout to ignore this control when sizing
* and positioning controls. If this value is <code>true</code>,
* the size and position of the control will not be managed by the
* layout. If this value is <code>false</code>, the size and
* position of the control will be computed and assigned.
*
* The default value is <code>false</code>.
*
* @since 3.1
*/
public boolean exclude = false;
/**
* Value for horizontalAlignment or verticalAlignment.
* Position the control at the top or left of the cell.
* Not recommended. Use SWT.BEGINNING, SWT.TOP or SWT.LEFT instead.
*/
public static final int BEGINNING = SWT_BEGINNING;
/**
* Value for horizontalAlignment or verticalAlignment.
* Position the control in the vertical or horizontal center of the cell
* Not recommended. Use SWT.CENTER instead.
*/
public static final int CENTER = 2;
/**
* Value for horizontalAlignment or verticalAlignment.
* Position the control at the bottom or right of the cell
* Not recommended. Use SWT.END, SWT.BOTTOM or SWT.RIGHT instead.
*/
public static final int END = 3;
/**
* Value for horizontalAlignment or verticalAlignment.
* Resize the control to fill the cell horizontally or vertically.
* Not recommended. Use SWT.FILL instead.
*/
public static final int FILL = SWT_FILL;
/**
* Style bit for <code>new GridData(int)</code>.
* Position the control at the top of the cell.
* Not recommended. Use
* <code>new GridData(int, SWT.BEGINNING, boolean, boolean)</code>
* instead.
*/
public static final int VERTICAL_ALIGN_BEGINNING = 1 << 1;
/**
* Style bit for <code>new GridData(int)</code> to position the
* control in the vertical center of the cell.
* Not recommended. Use
* <code>new GridData(int, SWT.CENTER, boolean, boolean)</code>
* instead.
*/
public static final int VERTICAL_ALIGN_CENTER = 1 << 2;
/**
* Style bit for <code>new GridData(int)</code> to position the
* control at the bottom of the cell.
* Not recommended. Use
* <code>new GridData(int, SWT.END, boolean, boolean)</code>
* instead.
*/
public static final int VERTICAL_ALIGN_END = 1 << 3;
/**
* Style bit for <code>new GridData(int)</code> to resize the
* control to fill the cell vertically.
* Not recommended. Use
* <code>new GridData(int, SWT.FILL, boolean, boolean)</code>
* instead
*/
public static final int VERTICAL_ALIGN_FILL = 1 << 4;
/**
* Style bit for <code>new GridData(int)</code> to position the
* control at the left of the cell.
* Not recommended. Use
* <code>new GridData(SWT.BEGINNING, int, boolean, boolean)</code>
* instead.
*/
public static final int HORIZONTAL_ALIGN_BEGINNING = 1 << 5;
/**
* Style bit for <code>new GridData(int)</code> to position the
* control in the horizontal center of the cell.
* Not recommended. Use
* <code>new GridData(SWT.CENTER, int, boolean, boolean)</code>
* instead.
*/
public static final int HORIZONTAL_ALIGN_CENTER = 1 << 6;
/**
* Style bit for <code>new GridData(int)</code> to position the
* control at the right of the cell.
* Not recommended. Use
* <code>new GridData(SWT.END, int, boolean, boolean)</code>
* instead.
*/
public static final int HORIZONTAL_ALIGN_END = 1 << 7;
/**
* Style bit for <code>new GridData(int)</code> to resize the
* control to fill the cell horizontally.
* Not recommended. Use
* <code>new GridData(SWT.FILL, int, boolean, boolean)</code>
* instead.
*/
public static final int HORIZONTAL_ALIGN_FILL = 1 << 8;
/**
* Style bit for <code>new GridData(int)</code> to resize the
* control to fit the remaining horizontal space.
* Not recommended. Use
* <code>new GridData(int, int, true, boolean)</code>
* instead.
*/
public static final int GRAB_HORIZONTAL = 1 << 9;
/**
* Style bit for <code>new GridData(int)</code> to resize the
* control to fit the remaining vertical space.
* Not recommended. Use
* <code>new GridData(int, int, boolean, true)</code>
* instead.
*/
public static final int GRAB_VERTICAL = 1 << 10;
/**
* Style bit for <code>new GridData(int)</code> to resize the
* control to fill the cell vertically and to fit the remaining
* vertical space.
* FILL_VERTICAL = VERTICAL_ALIGN_FILL | GRAB_VERTICAL
* Not recommended. Use
* <code>new GridData(int, SWT.FILL, boolean, true)</code>
* instead.
*/
public static final int FILL_VERTICAL = VERTICAL_ALIGN_FILL | GRAB_VERTICAL;
/**
* Style bit for <code>new GridData(int)</code> to resize the
* control to fill the cell horizontally and to fit the remaining
* horizontal space.
* FILL_HORIZONTAL = HORIZONTAL_ALIGN_FILL | GRAB_HORIZONTAL
* Not recommended. Use
* <code>new GridData(SWT.FILL, int, true, boolean)</code>
* instead.
*/
public static final int FILL_HORIZONTAL = HORIZONTAL_ALIGN_FILL | GRAB_HORIZONTAL;
/**
* Style bit for <code>new GridData(int)</code> to resize the
* control to fill the cell horizontally and vertically and
* to fit the remaining horizontal and vertical space.
* FILL_BOTH = FILL_VERTICAL | FILL_HORIZONTAL
* Not recommended. Use
* <code>new GridData(SWT.FILL, SWT.FILL, true, true)</code>
* instead.
*/
public static final int FILL_BOTH = FILL_VERTICAL | FILL_HORIZONTAL;
double cacheWidth = -1, cacheHeight = -1;
double defaultWhint, defaultHhint, defaultWidth = -1, defaultHeight = -1;
double currentWhint, currentHhint, currentWidth = -1, currentHeight = -1;
/**
* Constructs a new instance of GridData using
* default values.
*/
public GridData () {
super ();
}
/**
* Constructs a new instance based on the GridData style.
* This constructor is not recommended.
*
* @param style the GridData style
*/
public GridData (int style) {
super ();
if ((style & VERTICAL_ALIGN_BEGINNING) != 0) verticalAlignment = BEGINNING;
if ((style & VERTICAL_ALIGN_CENTER) != 0) verticalAlignment = CENTER;
if ((style & VERTICAL_ALIGN_FILL) != 0) verticalAlignment = FILL;
if ((style & VERTICAL_ALIGN_END) != 0) verticalAlignment = END;
if ((style & HORIZONTAL_ALIGN_BEGINNING) != 0) horizontalAlignment = BEGINNING;
if ((style & HORIZONTAL_ALIGN_CENTER) != 0) horizontalAlignment = CENTER;
if ((style & HORIZONTAL_ALIGN_FILL) != 0) horizontalAlignment = FILL;
if ((style & HORIZONTAL_ALIGN_END) != 0) horizontalAlignment = END;
grabExcessHorizontalSpace = (style & GRAB_HORIZONTAL) != 0;
grabExcessVerticalSpace = (style & GRAB_VERTICAL) != 0;
}
/**
* Constructs a new instance of GridData according to the parameters.
*
* @param horizontalAlignment how control will be positioned horizontally within a cell,
* one of: SWT.BEGINNING (or SWT.LEFT), SWT.CENTER, SWT.END (or SWT.RIGHT), or SWT.FILL
* @param verticalAlignment how control will be positioned vertically within a cell,
* one of: SWT.BEGINNING (or SWT.TOP), SWT.CENTER, SWT.END (or SWT.BOTTOM), or SWT.FILL
* @param grabExcessHorizontalSpace whether cell will be made wide enough to fit the remaining horizontal space
* @param grabExcessVerticalSpace whether cell will be made high enough to fit the remaining vertical space
*
* @since 3.0
*/
public GridData (int horizontalAlignment, int verticalAlignment, boolean grabExcessHorizontalSpace, boolean grabExcessVerticalSpace) {
this (horizontalAlignment, verticalAlignment, grabExcessHorizontalSpace, grabExcessVerticalSpace, 1, 1);
}
/**
* Constructs a new instance of GridData according to the parameters.
*
* @param horizontalAlignment how control will be positioned horizontally within a cell,
* one of: SWT.BEGINNING (or SWT.LEFT), SWT.CENTER, SWT.END (or SWT.RIGHT), or SWT.FILL
* @param verticalAlignment how control will be positioned vertically within a cell,
* one of: SWT.BEGINNING (or SWT.TOP), SWT.CENTER, SWT.END (or SWT.BOTTOM), or SWT.FILL
* @param grabExcessHorizontalSpace whether cell will be made wide enough to fit the remaining horizontal space
* @param grabExcessVerticalSpace whether cell will be made high enough to fit the remaining vertical space
* @param horizontalSpan the number of column cells that the control will take up
* @param verticalSpan the number of row cells that the control will take up
*
* @since 3.0
*/
public GridData (int horizontalAlignment, int verticalAlignment, boolean grabExcessHorizontalSpace, boolean grabExcessVerticalSpace, int horizontalSpan, int verticalSpan) {
super ();
this.horizontalAlignment = horizontalAlignment;
this.verticalAlignment = verticalAlignment;
this.grabExcessHorizontalSpace = grabExcessHorizontalSpace;
this.grabExcessVerticalSpace = grabExcessVerticalSpace;
this.horizontalSpan = horizontalSpan;
this.verticalSpan = verticalSpan;
}
/**
* Constructs a new instance of GridData according to the parameters.
* A value of SWT.DEFAULT indicates that no minimum width or
* no minimum height is specified.
*
* @param width a minimum width for the column
* @param height a minimum height for the row
*
* @since 3.0
*/
public GridData (int width, int height) {
super ();
this.widthHint = width;
this.heightHint = height;
}
void computeSize (Node control, int wHint, int hHint, boolean flushCache) {
if (cacheWidth != -1 && cacheHeight != -1) return;
if (wHint == this.widthHint && hHint == this.heightHint) {
if (defaultWidth == -1 || defaultHeight == -1 || wHint != defaultWhint || hHint != defaultHhint) {
// Point size = control.computeSize (wHint, hHint, flushCache);
defaultWhint = wHint;
defaultHhint = hHint;
defaultWidth = control.prefWidth(wHint);
defaultHeight = control.prefHeight(hHint);
}
cacheWidth = defaultWidth;
cacheHeight = defaultHeight;
return;
}
if (currentWidth == -1 || currentHeight == -1 || wHint != currentWhint || hHint != currentHhint) {
// Point size = control.computeSize (wHint, hHint, flushCache);
currentWhint = wHint;
currentHhint = hHint;
currentWidth = control.getLayoutBounds().getWidth();
currentHeight = control.getLayoutBounds().getHeight();
}
cacheWidth = currentWidth;
cacheHeight = currentHeight;
}
void flushCache () {
cacheWidth = cacheHeight = -1;
defaultWidth = defaultHeight = -1;
currentWidth = currentHeight = -1;
}
String getName () {
String string = getClass ().getName ();
int index = string.lastIndexOf ('.');
if (index == -1) return string;
return string.substring (index + 1, string.length ());
}
/**
* Returns a string containing a concise, human-readable
* description of the receiver.
*
* @return a string representation of the GridData object
*/
public String toString () {
String hAlign = "";
switch (horizontalAlignment) {
case SWT_FILL: hAlign = "SWT.FILL"; break;
case SWT_BEGINNING: hAlign = "SWT.BEGINNING"; break;
case SWT_LEFT: hAlign = "SWT.LEFT"; break;
case SWT_END: hAlign = "SWT.END"; break;
case END: hAlign = "GridData.END"; break;
case SWT_RIGHT: hAlign = "SWT.RIGHT"; break;
case SWT_CENTER: hAlign = "SWT.CENTER"; break;
case CENTER: hAlign = "GridData.CENTER"; break;
default: hAlign = "Undefined "+horizontalAlignment; break;
}
String vAlign = "";
switch (verticalAlignment) {
case SWT_FILL: vAlign = "SWT.FILL"; break;
case SWT_BEGINNING: vAlign = "SWT.BEGINNING"; break;
case SWT_TOP: vAlign = "SWT.TOP"; break;
case SWT_END: vAlign = "SWT.END"; break;
case END: vAlign = "GridData.END"; break;
case SWT_BOTTOM: vAlign = "SWT.BOTTOM"; break;
case SWT_CENTER: vAlign = "SWT.CENTER"; break;
case CENTER: vAlign = "GridData.CENTER"; break;
default: vAlign = "Undefined "+verticalAlignment; break;
}
String string = getName()+" {";
string += "horizontalAlignment="+hAlign+" ";
if (horizontalIndent != 0) string += "horizontalIndent="+horizontalIndent+" ";
if (horizontalSpan != 1) string += "horizontalSpan="+horizontalSpan+" ";
if (grabExcessHorizontalSpace) string += "grabExcessHorizontalSpace="+grabExcessHorizontalSpace+" ";
if (widthHint != SWT_DEFAULT) string += "widthHint="+widthHint+" ";
if (minimumWidth != 0) string += "minimumWidth="+minimumWidth+" ";
string += "verticalAlignment="+vAlign+" ";
if (verticalIndent != 0) string += "verticalIndent="+verticalIndent+" ";
if (verticalSpan != 1) string += "verticalSpan="+verticalSpan+" ";
if (grabExcessVerticalSpace) string += "grabExcessVerticalSpace="+grabExcessVerticalSpace+" ";
if (heightHint != SWT_DEFAULT) string += "heightHint="+heightHint+" ";
if (minimumHeight != 0) string += "minimumHeight="+minimumHeight+" ";
if (exclude) string += "exclude="+exclude+" ";
string = string.trim();
string += "}";
return string;
}
}
@Override
protected at.bestsolution.efxclipse.runtime.panels.AbstractLayoutPane.Size computeSize(
double width, double height, boolean flushCache) {
return calculateLayout(false, 0, 0, width, height, flushCache);
}
@Override
protected void layoutChildren() {
super.layoutChildren();
calculateLayout(true, getLayoutBounds().getMinX(), getLayoutBounds().getMinY(), getLayoutBounds().getWidth(), getLayoutBounds().getHeight(), true);
}
private Size calculateLayout( boolean move, double x, double y, double width, double height, boolean flushCache) {
if (numColumnsProperty.get() < 1) {
return new Size (marginLeft.get() + marginWidth.get() * 2 + marginRight.get(), marginTop.get() + marginHeight.get() * 2 + marginBottom.get());
}
Node[] children = getChildren().toArray(new Node[0]);
int count = 0;
for (int i=0; i<children.length; i++) {
Node control = children [i];
GridData data = getConstraint(control);
if (data == null || !data.exclude) {
children [count++] = children [i];
}
}
if (count == 0) {
return new Size (marginLeft.get() + marginWidth.get() * 2 + marginRight.get(), marginTop.get() + marginHeight.get() * 2 + marginBottom.get());
}
for (int i=0; i<count; i++) {
Node child = children [i];
GridData data = getConstraint(child);
if (data == null) {
data = new GridData ();
setConstraint(child, data);
}
if (flushCache) data.flushCache ();
data.computeSize (child, data.widthHint, data.heightHint, flushCache);
if (data.grabExcessHorizontalSpace && data.minimumWidth > 0) {
if (data.cacheWidth < data.minimumWidth) {
int trim = 0;
//TEMPORARY CODE
//FIXME
// if (child instanceof Scrollable) {
// Rectangle rect = ((Scrollable) child).computeTrim (0, 0, 0, 0);
// trim = rect.width;
// } else {
// trim = child.getBorderWidth () * 2;
// }
data.cacheWidth = data.cacheHeight = SWT_DEFAULT;
data.computeSize (child, Math.max (0, data.minimumWidth - trim), data.heightHint, false);
}
}
if (data.grabExcessVerticalSpace && data.minimumHeight > 0) {
data.cacheHeight = Math.max (data.cacheHeight, data.minimumHeight);
}
}
/* Build the grid */
int row = 0, column = 0, rowCount = 0, columnCount = numColumnsProperty.get();
Node [][] grid = new Node [4] [columnCount];
for (int i=0; i<count; i++) {
Node child = children [i];
GridData data = getConstraint(child);
int hSpan = Math.max (1, Math.min (data.horizontalSpan, columnCount));
int vSpan = Math.max (1, data.verticalSpan);
while (true) {
int lastRow = row + vSpan;
if (lastRow >= grid.length) {
Node [][] newGrid = new Node [lastRow + 4] [columnCount];
System.arraycopy (grid, 0, newGrid, 0, grid.length);
grid = newGrid;
}
if (grid [row] == null) {
grid [row] = new Node [columnCount];
}
while (column < columnCount && grid [row] [column] != null) {
column++;
}
int endCount = column + hSpan;
if (endCount <= columnCount) {
int index = column;
while (index < endCount && grid [row] [index] == null) {
index++;
}
if (index == endCount) break;
column = index;
}
if (column + hSpan >= columnCount) {
column = 0;
row++;
}
}
for (int j=0; j<vSpan; j++) {
if (grid [row + j] == null) {
grid [row + j] = new Node [columnCount];
}
for (int k=0; k<hSpan; k++) {
grid [row + j] [column + k] = child;
}
}
rowCount = Math.max (rowCount, row + vSpan);
column += hSpan;
}
/* Column widths */
double availableWidth = width - horizontalSpacing.get() * (columnCount - 1) - (marginLeft.get() + marginWidth.get() * 2 + marginRight.get());
int expandCount = 0;
double [] widths = new double [columnCount];
double [] minWidths = new double [columnCount];
boolean [] expandColumn = new boolean [columnCount];
for (int j=0; j<columnCount; j++) {
for (int i=0; i<rowCount; i++) {
GridData data = getData (grid, i, j, rowCount, columnCount, true);
if (data != null) {
int hSpan = Math.max (1, Math.min (data.horizontalSpan, columnCount));
if (hSpan == 1) {
double w = data.cacheWidth + data.horizontalIndent;
widths [j] = Math.max (widths [j], w);
if (data.grabExcessHorizontalSpace) {
if (!expandColumn [j]) expandCount++;
expandColumn [j] = true;
}
if (!data.grabExcessHorizontalSpace || data.minimumWidth != 0) {
w = !data.grabExcessHorizontalSpace || data.minimumWidth == SWT_DEFAULT ? data.cacheWidth : data.minimumWidth;
w += data.horizontalIndent;
minWidths [j] = Math.max (minWidths [j], w);
}
}
}
}
for (int i=0; i<rowCount; i++) {
GridData data = getData (grid, i, j, rowCount, columnCount, false);
if (data != null) {
int hSpan = Math.max (1, Math.min (data.horizontalSpan, columnCount));
if (hSpan > 1) {
int spanWidth = 0, spanMinWidth = 0, spanExpandCount = 0;
for (int k=0; k<hSpan; k++) {
spanWidth += widths [j-k];
spanMinWidth += minWidths [j-k];
if (expandColumn [j-k]) spanExpandCount++;
}
if (data.grabExcessHorizontalSpace && spanExpandCount == 0) {
expandCount++;
expandColumn [j] = true;
}
double w = data.cacheWidth + data.horizontalIndent - spanWidth - (hSpan - 1) * horizontalSpacing.get();
if (w > 0) {
if (makeColumnsEqualWidthProperty.get()) {
double equalWidth = (w + spanWidth) / hSpan;
double remainder = (w + spanWidth) % hSpan;
int last = -1;
for (int k = 0; k < hSpan; k++) {
widths [last=j-k] = Math.max (equalWidth, widths [j-k]);
}
if (last > -1) widths [last] += remainder;
} else {
if (spanExpandCount == 0) {
widths [j] += w;
} else {
double delta = w / spanExpandCount;
double remainder = w % spanExpandCount;
int last = -1;
for (int k = 0; k < hSpan; k++) {
if (expandColumn [j-k]) {
widths [last=j-k] += delta;
}
}
if (last > -1) widths [last] += remainder;
}
}
}
if (!data.grabExcessHorizontalSpace || data.minimumWidth != 0) {
w = !data.grabExcessHorizontalSpace || data.minimumWidth == SWT_DEFAULT ? data.cacheWidth : data.minimumWidth;
w += data.horizontalIndent - spanMinWidth - (hSpan - 1) * horizontalSpacing.get();
if (w > 0) {
if (spanExpandCount == 0) {
minWidths [j] += w;
} else {
double delta = w / spanExpandCount;
double remainder = w % spanExpandCount;
int last = -1;
for (int k = 0; k < hSpan; k++) {
if (expandColumn [j-k]) {
minWidths [last=j-k] += delta;
}
}
if (last > -1) minWidths [last] += remainder;
}
}
}
}
}
}
}
if (makeColumnsEqualWidthProperty.get()) {
double minColumnWidth = 0;
double columnWidth = 0;
for (int i=0; i<columnCount; i++) {
minColumnWidth = Math.max (minColumnWidth, minWidths [i]);
columnWidth = Math.max (columnWidth, widths [i]);
}
columnWidth = width == SWT_DEFAULT || expandCount == 0 ? columnWidth : Math.max (minColumnWidth, availableWidth / columnCount);
for (int i=0; i<columnCount; i++) {
expandColumn [i] = expandCount > 0;
widths [i] = columnWidth;
}
} else {
if (width != SWT_DEFAULT && expandCount > 0) {
int totalWidth = 0;
for (int i=0; i<columnCount; i++) {
totalWidth += widths [i];
}
int c = expandCount;
double delta = (availableWidth - totalWidth) / c;
double remainder = (availableWidth - totalWidth) % c;
int last = -1;
while (totalWidth != availableWidth) {
for (int j=0; j<columnCount; j++) {
if (expandColumn [j]) {
if (widths [j] + delta > minWidths [j]) {
widths [last = j] = widths [j] + delta;
} else {
widths [j] = minWidths [j];
expandColumn [j] = false;
c--;
}
}
}
if (last > -1) widths [last] += remainder;
for (int j=0; j<columnCount; j++) {
for (int i=0; i<rowCount; i++) {
GridData data = getData (grid, i, j, rowCount, columnCount, false);
if (data != null) {
int hSpan = Math.max (1, Math.min (data.horizontalSpan, columnCount));
if (hSpan > 1) {
if (!data.grabExcessHorizontalSpace || data.minimumWidth != 0) {
int spanWidth = 0, spanExpandCount = 0;
for (int k=0; k<hSpan; k++) {
spanWidth += widths [j-k];
if (expandColumn [j-k]) spanExpandCount++;
}
double w = !data.grabExcessHorizontalSpace || data.minimumWidth == SWT_DEFAULT ? data.cacheWidth : data.minimumWidth;
w += data.horizontalIndent - spanWidth - (hSpan - 1) * horizontalSpacing.get();
if (w > 0) {
if (spanExpandCount == 0) {
widths [j] += w;
} else {
double delta2 = w / spanExpandCount;
double remainder2 = w % spanExpandCount;
int last2 = -1;
for (int k = 0; k < hSpan; k++) {
if (expandColumn [j-k]) {
widths [last2=j-k] += delta2;
}
}
if (last2 > -1) widths [last2] += remainder2;
}
}
}
}
}
}
}
if (c == 0) break;
totalWidth = 0;
for (int i=0; i<columnCount; i++) {
totalWidth += widths [i];
}
delta = (availableWidth - totalWidth) / c;
remainder = (availableWidth - totalWidth) % c;
last = -1;
}
}
}
/* Wrapping */
GridData [] flush = null;
int flushLength = 0;
if (width != SWT_DEFAULT) {
for (int j=0; j<columnCount; j++) {
for (int i=0; i<rowCount; i++) {
GridData data = getData (grid, i, j, rowCount, columnCount, false);
if (data != null) {
if (data.heightHint == SWT_DEFAULT) {
Node child = grid [i][j];
//TEMPORARY CODE
int hSpan = Math.max (1, Math.min (data.horizontalSpan, columnCount));
int currentWidth = 0;
for (int k=0; k<hSpan; k++) {
currentWidth += widths [j-k];
}
currentWidth += (hSpan - 1) * horizontalSpacing.get() - data.horizontalIndent;
if ((currentWidth != data.cacheWidth && data.horizontalAlignment == SWT_FILL) || (data.cacheWidth > currentWidth)) {
int trim = 0;
//FIXME
// if (child instanceof Scrollable) {
// Rectangle rect = ((Scrollable) child).computeTrim (0, 0, 0, 0);
// trim = rect.width;
// } else {
// trim = child.getBorderWidth () * 2;
// }
data.cacheWidth = data.cacheHeight = SWT_DEFAULT;
data.computeSize (child, Math.max (0, currentWidth - trim), data.heightHint, false);
if (data.grabExcessVerticalSpace && data.minimumHeight > 0) {
data.cacheHeight = Math.max (data.cacheHeight, data.minimumHeight);
}
if (flush == null) flush = new GridData [count];
flush [flushLength++] = data;
}
}
}
}
}
}
/* Row heights */
double availableHeight = height - verticalSpacing.get() * (rowCount - 1) - (marginTop.get() + marginHeight.get() * 2 + marginBottom.get());
expandCount = 0;
double [] heights = new double [rowCount];
double [] minHeights = new double [rowCount];
boolean [] expandRow = new boolean [rowCount];
for (int i=0; i<rowCount; i++) {
for (int j=0; j<columnCount; j++) {
GridData data = getData (grid, i, j, rowCount, columnCount, true);
if (data != null) {
int vSpan = Math.max (1, Math.min (data.verticalSpan, rowCount));
if (vSpan == 1) {
double h = data.cacheHeight + data.verticalIndent;
heights [i] = Math.max (heights [i], h);
if (data.grabExcessVerticalSpace) {
if (!expandRow [i]) expandCount++;
expandRow [i] = true;
}
if (!data.grabExcessVerticalSpace || data.minimumHeight != 0) {
h = !data.grabExcessVerticalSpace || data.minimumHeight == SWT_DEFAULT ? data.cacheHeight : data.minimumHeight;
h += data.verticalIndent;
minHeights [i] = Math.max (minHeights [i], h);
}
}
}
}
for (int j=0; j<columnCount; j++) {
GridData data = getData (grid, i, j, rowCount, columnCount, false);
if (data != null) {
int vSpan = Math.max (1, Math.min (data.verticalSpan, rowCount));
if (vSpan > 1) {
int spanHeight = 0, spanMinHeight = 0, spanExpandCount = 0;
for (int k=0; k<vSpan; k++) {
spanHeight += heights [i-k];
spanMinHeight += minHeights [i-k];
if (expandRow [i-k]) spanExpandCount++;
}
if (data.grabExcessVerticalSpace && spanExpandCount == 0) {
expandCount++;
expandRow [i] = true;
}
double h = data.cacheHeight + data.verticalIndent - spanHeight - (vSpan - 1) * verticalSpacing.get();
if (h > 0) {
if (spanExpandCount == 0) {
heights [i] += h;
} else {
double delta = h / spanExpandCount;
double remainder = h % spanExpandCount;
int last = -1;
for (int k = 0; k < vSpan; k++) {
if (expandRow [i-k]) {
heights [last=i-k] += delta;
}
}
if (last > -1) heights [last] += remainder;
}
}
if (!data.grabExcessVerticalSpace || data.minimumHeight != 0) {
h = !data.grabExcessVerticalSpace || data.minimumHeight == SWT_DEFAULT ? data.cacheHeight : data.minimumHeight;
h += data.verticalIndent - spanMinHeight - (vSpan - 1) * verticalSpacing.get();
if (h > 0) {
if (spanExpandCount == 0) {
minHeights [i] += h;
} else {
double delta = h / spanExpandCount;
double remainder = h % spanExpandCount;
int last = -1;
for (int k = 0; k < vSpan; k++) {
if (expandRow [i-k]) {
minHeights [last=i-k] += delta;
}
}
if (last > -1) minHeights [last] += remainder;
}
}
}
}
}
}
}
if (height != SWT_DEFAULT && expandCount > 0) {
int totalHeight = 0;
for (int i=0; i<rowCount; i++) {
totalHeight += heights [i];
}
int c = expandCount;
double delta = (availableHeight - totalHeight) / c;
double remainder = (availableHeight - totalHeight) % c;
int last = -1;
while (totalHeight != availableHeight) {
for (int i=0; i<rowCount; i++) {
if (expandRow [i]) {
if (heights [i] + delta > minHeights [i]) {
heights [last = i] = heights [i] + delta;
} else {
heights [i] = minHeights [i];
expandRow [i] = false;
c--;
}
}
}
if (last > -1) heights [last] += remainder;
for (int i=0; i<rowCount; i++) {
for (int j=0; j<columnCount; j++) {
GridData data = getData (grid, i, j, rowCount, columnCount, false);
if (data != null) {
int vSpan = Math.max (1, Math.min (data.verticalSpan, rowCount));
if (vSpan > 1) {
if (!data.grabExcessVerticalSpace || data.minimumHeight != 0) {
int spanHeight = 0, spanExpandCount = 0;
for (int k=0; k<vSpan; k++) {
spanHeight += heights [i-k];
if (expandRow [i-k]) spanExpandCount++;
}
double h = !data.grabExcessVerticalSpace || data.minimumHeight == SWT_DEFAULT ? data.cacheHeight : data.minimumHeight;
h += data.verticalIndent - spanHeight - (vSpan - 1) * verticalSpacing.get();
if (h > 0) {
if (spanExpandCount == 0) {
heights [i] += h;
} else {
double delta2 = h / spanExpandCount;
double remainder2 = h % spanExpandCount;
int last2 = -1;
for (int k = 0; k < vSpan; k++) {
if (expandRow [i-k]) {
heights [last2=i-k] += delta2;
}
}
if (last2 > -1) heights [last2] += remainder2;
}
}
}
}
}
}
}
if (c == 0) break;
totalHeight = 0;
for (int i=0; i<rowCount; i++) {
totalHeight += heights [i];
}
delta = (availableHeight - totalHeight) / c;
remainder = (availableHeight - totalHeight) % c;
last = -1;
}
}
/* Position the controls */
if (move) {
double gridY = y + marginTop.get() + marginHeight.get();
for (int i=0; i<rowCount; i++) {
double gridX = x + marginLeft.get() + marginWidth.get();
for (int j=0; j<columnCount; j++) {
GridData data = getData (grid, i, j, rowCount, columnCount, true);
if (data != null) {
int hSpan = Math.max (1, Math.min (data.horizontalSpan, columnCount));
int vSpan = Math.max (1, data.verticalSpan);
int cellWidth = 0, cellHeight = 0;
for (int k=0; k<hSpan; k++) {
cellWidth += widths [j+k];
}
for (int k=0; k<vSpan; k++) {
cellHeight += heights [i+k];
}
cellWidth += horizontalSpacing.get() * (hSpan - 1);
double childX = gridX + data.horizontalIndent;
double childWidth = Math.min (data.cacheWidth, cellWidth);
switch (data.horizontalAlignment) {
case SWT_CENTER:
case GridData.CENTER:
childX += Math.max (0, (cellWidth - data.horizontalIndent - childWidth) / 2);
break;
case SWT_RIGHT:
case SWT_END:
case GridData.END:
childX += Math.max (0, cellWidth - data.horizontalIndent - childWidth);
break;
case SWT_FILL:
childWidth = cellWidth - data.horizontalIndent;
break;
}
cellHeight += verticalSpacing.get() * (vSpan - 1);
double childY = gridY + data.verticalIndent;
double childHeight = Math.min (data.cacheHeight, cellHeight);
switch (data.verticalAlignment) {
case SWT_CENTER:
case GridData.CENTER:
childY += Math.max (0, (cellHeight - data.verticalIndent - childHeight) / 2);
break;
case SWT_BOTTOM:
case SWT_END:
case GridData.END:
childY += Math.max (0, cellHeight - data.verticalIndent - childHeight);
break;
case SWT_FILL:
childHeight = cellHeight - data.verticalIndent;
break;
}
Node child = grid [i][j];
if (child != null) {
child.resizeRelocate(childX, childY, childWidth, childHeight);
}
}
gridX += widths [j] + horizontalSpacing.get();
}
gridY += heights [i] + verticalSpacing.get();
}
}
// clean up cache
for (int i = 0; i < flushLength; i++) {
flush [i].cacheWidth = flush [i].cacheHeight = -1;
}
int totalDefaultWidth = 0;
int totalDefaultHeight = 0;
for (int i=0; i<columnCount; i++) {
totalDefaultWidth += widths [i];
}
for (int i=0; i<rowCount; i++) {
totalDefaultHeight += heights [i];
}
totalDefaultWidth += horizontalSpacing.get() * (columnCount - 1) + marginLeft.get() + marginWidth.get() * 2 + marginRight.get();
totalDefaultHeight += verticalSpacing.get() * (rowCount - 1) + marginTop.get() + marginHeight.get() * 2 + marginBottom.get();
return new Size (totalDefaultWidth, totalDefaultHeight);
}
GridData getData (Node [][] grid, int row, int column, int rowCount, int columnCount, boolean first) {
Node control = grid [row] [column];
if (control != null) {
GridData data = getConstraint(control);
int hSpan = Math.max (1, Math.min (data.horizontalSpan, columnCount));
int vSpan = Math.max (1, data.verticalSpan);
int i = first ? row + vSpan - 1 : row - vSpan + 1;
int j = first ? column + hSpan - 1 : column - hSpan + 1;
if (0 <= i && i < rowCount) {
if (0 <= j && j < columnCount) {
if (control == grid [i][j]) return data;
}
}
}
return null;
}
public void setNumColumns(int numColumns) {
this.numColumnsProperty.set(numColumns);
}
public int getNumColumns() {
return this.numColumnsProperty.get();
}
public WritableIntegerValue getNumColumnsProperty() {
return numColumnsProperty;
}
public void setMakeColumnsEqualWidth(boolean makeColumnsEqualWidth) {
this.makeColumnsEqualWidthProperty.set(makeColumnsEqualWidth);
}
public boolean isMakeColumnsEqualWidth() {
return this.makeColumnsEqualWidthProperty.get();
}
public WritableBooleanValue getMakeColumnsEqualWidthProperty() {
return makeColumnsEqualWidthProperty;
}
}
