javafx.scene.layout.GridPaneDesignInfo Maven / Gradle / Ivy
/*
* Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code 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
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package javafx.scene.layout;
import javafx.geometry.BoundingBox;
import javafx.geometry.Bounds;
import javafx.scene.Node;
public class GridPaneDesignInfo extends PaneDesignInfo {
public GridPaneDesignInfo() {
super(GridPane.class);
}
protected GridPaneDesignInfo(Class type) {
super(type);
}
public int getRowCount(GridPane pane) {
int numRows = pane.getRowConstraints().size();
for (int i = 0; i < pane.getChildren().size(); i++) {
Node child = pane.getChildren().get(i);
if (child.isManaged()) {
int rowIndex = GridPane.getNodeRowIndex(child);
int rowEnd = GridPane.getNodeRowEnd(child);
numRows = Math.max(numRows, (rowEnd != GridPane.REMAINING? rowEnd : rowIndex) + 1);
}
}
return numRows;
}
public int getColumnCount(GridPane pane) {
int numColumns = pane.getColumnConstraints().size();
for (int i = 0; i < pane.getChildren().size(); i++) {
Node child = pane.getChildren().get(i);
if (child.isManaged()) {
int columnIndex = GridPane.getNodeColumnIndex(child);
int columnEnd = GridPane.getNodeColumnEnd(child);
numColumns = Math.max(numColumns, (columnEnd != GridPane.REMAINING? columnEnd : columnIndex) + 1);
}
}
return numColumns;
}
public Bounds getCellBounds(GridPane pane, int columnIndex, int rowIndex) {
final double snaphgap = pane.snapSpace(pane.getHgap());
final double snapvgap = pane.snapSpace(pane.getVgap());
final double top = pane.snapSpace(pane.getInsets().getTop());
final double right = pane.snapSpace(pane.getInsets().getRight());
final double bottom = pane.snapSpace(pane.getInsets().getBottom());
final double left = pane.snapSpace(pane.getInsets().getLeft());
final double gridPaneHeight = pane.snapSize(pane.getHeight()) - (top + bottom);
final double gridPaneWidth = pane.snapSize(pane.getWidth()) - (left + right);
// Compute grid. Result contains two double arrays, first for columns, second for rows
double[] columnWidths;
double[] rowHeights;
double[][] grid = pane.getGrid();
if (grid == null) {
rowHeights = new double[] {0};
rowIndex = 0;
columnWidths = new double[] {0};
columnIndex = 0;
} else {
columnWidths = grid[0];
rowHeights = grid[1];
}
// Compute the total row height
double rowTotal = 0;
for (int i = 0; i < rowHeights.length; i++) {
rowTotal += rowHeights[i];
}
rowTotal += ((rowHeights.length - 1) * snapvgap);
// Adjust for alignment
double minY = top + Region.computeYOffset(gridPaneHeight, rowTotal, pane.getAlignment().getVpos());
double height = rowHeights[rowIndex];
for (int j = 0; j < rowIndex; j++) {
minY += rowHeights[j] + snapvgap;
}
// Compute the total column width
double columnTotal = 0;
for (int i = 0; i < columnWidths.length; i++) {
columnTotal += columnWidths[i];
}
columnTotal += ((columnWidths.length - 1) * snaphgap);
// Adjust for alignment
double minX = left + Region.computeXOffset(gridPaneWidth, columnTotal, pane.getAlignment().getHpos());
double width = columnWidths[columnIndex];
for (int j = 0; j < columnIndex; j++) {
minX += columnWidths[j] + snaphgap;
}
return new BoundingBox(minX, minY, width, height);
}
}