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view graal/com.oracle.max.base/src/com/sun/max/gui/SpringUtilities.java @ 4213:e4cfa571d8c4
Do not emit stack-to-stack moves.
author | Christian Wimmer <Christian.Wimmer@Oracle.com> |
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date | Tue, 03 Jan 2012 18:47:27 -0800 |
parents | e233f5660da4 |
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/* * Copyright (c) 2007, 2011, 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. * * 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 com.sun.max.gui; import java.awt.*; import javax.swing.*; /** * Partially copied from the "Swing Tutorial". * Minor changes to comply with our CheckStyle settings. * * A 1.4 file that provides utility methods for * creating form- or grid-style layouts with SpringLayout. * These utilities are used by several programs, such as * SpringBox and SpringCompactGrid. */ public final class SpringUtilities { private SpringUtilities() { } /** * A debugging utility that prints to stdout the component's * minimum, preferred, and maximum sizes. */ public static void printSizes(Component c) { System.out.println("minimumSize = " + c.getMinimumSize()); System.out.println("preferredSize = " + c.getPreferredSize()); System.out.println("maximumSize = " + c.getMaximumSize()); } /** * Aligns the first {@code rows} * {@code cols} * components of {@code parent} in * a grid. Each component is as big as the maximum * preferred width and height of the components. * The parent is made just big enough to fit them all. * * @param rows number of rows * @param cols number of columns * @param initialX x location to start the grid at * @param initialY y location to start the grid at * @param xPad x padding between cells * @param yPad y padding between cells */ public static void makeGrid(Container parent, int rows, int cols, int initialX, int initialY, int xPad, int yPad) { SpringLayout layout; try { layout = (SpringLayout) parent.getLayout(); } catch (ClassCastException exc) { System.err.println("The first argument to makeGrid must use SpringLayout."); return; } final Spring xPadSpring = Spring.constant(xPad); final Spring yPadSpring = Spring.constant(yPad); final Spring initialXSpring = Spring.constant(initialX); final Spring initialYSpring = Spring.constant(initialY); final int max = rows * cols; //Calculate Springs that are the max of the width/height so that all //cells have the same size. Spring maxWidthSpring = layout.getConstraints(parent.getComponent(0)). getWidth(); Spring maxHeightSpring = layout.getConstraints(parent.getComponent(0)). getWidth(); for (int i = 1; i < max; i++) { final SpringLayout.Constraints cons = layout.getConstraints(parent.getComponent(i)); maxWidthSpring = Spring.max(maxWidthSpring, cons.getWidth()); maxHeightSpring = Spring.max(maxHeightSpring, cons.getHeight()); } //Apply the new width/height Spring. This forces all the //components to have the same size. for (int i = 0; i < max; i++) { final SpringLayout.Constraints cons = layout.getConstraints(parent.getComponent(i)); cons.setWidth(maxWidthSpring); cons.setHeight(maxHeightSpring); } //Then adjust the x/y constraints of all the cells so that they //are aligned in a grid. SpringLayout.Constraints lastCons = null; SpringLayout.Constraints lastRowCons = null; for (int i = 0; i < max; i++) { final SpringLayout.Constraints cons = layout.getConstraints(parent.getComponent(i)); if (i % cols == 0) { //start of new row lastRowCons = lastCons; cons.setX(initialXSpring); } else if (lastCons != null) { //x position depends on previous component cons.setX(Spring.sum(lastCons.getConstraint(SpringLayout.EAST), xPadSpring)); } if (i / cols == 0) { //first row cons.setY(initialYSpring); } else if (lastRowCons != null) { //y position depends on previous row cons.setY(Spring.sum(lastRowCons.getConstraint(SpringLayout.SOUTH), yPadSpring)); } lastCons = cons; } //Set the parent's size. final SpringLayout.Constraints pCons = layout.getConstraints(parent); if (lastCons != null) { pCons.setConstraint(SpringLayout.SOUTH, Spring.sum(Spring.constant(yPad), lastCons.getConstraint(SpringLayout.SOUTH))); pCons.setConstraint(SpringLayout.EAST, Spring.sum(Spring.constant(xPad), lastCons.getConstraint(SpringLayout.EAST))); } } public static void makeGrid(Container parent, int numberOfColumns) { makeGrid(parent, parent.getComponentCount() / numberOfColumns, numberOfColumns, 0, 0, 5, 5); } /* Used by makeCompactGrid. */ private static SpringLayout.Constraints getConstraintsForCell( int row, int col, Container parent, int cols) { final SpringLayout layout = (SpringLayout) parent.getLayout(); final Component c = parent.getComponent(row * cols + col); return layout.getConstraints(c); } /** * Aligns the first {@code rows} * {@code cols} * components of {@code parent} in * a grid. Each component in a column is as wide as the maximum * preferred width of the components in that column; * height is similarly determined for each row. * The parent is made just big enough to fit them all. * * @param rows number of rows * @param cols number of columns * @param initialX x location to start the grid at * @param initialY y location to start the grid at * @param xPad x padding between cells * @param yPad y padding between cells */ public static void makeCompactGrid(Container parent, int rows, int cols, int initialX, int initialY, int xPad, int yPad) { SpringLayout layout; try { layout = (SpringLayout) parent.getLayout(); } catch (ClassCastException exc) { System.err.println("The first argument to makeCompactGrid must use SpringLayout."); return; } //Align all cells in each column and make them the same width. Spring x = Spring.constant(initialX); for (int c = 0; c < cols; c++) { Spring width = Spring.constant(0); for (int r = 0; r < rows; r++) { width = Spring.max(width, getConstraintsForCell(r, c, parent, cols). getWidth()); } for (int r = 0; r < rows; r++) { final SpringLayout.Constraints constraints = getConstraintsForCell(r, c, parent, cols); constraints.setX(x); constraints.setWidth(width); } x = Spring.sum(x, Spring.sum(width, Spring.constant(xPad))); } //Align all cells in each row and make them the same height. Spring y = Spring.constant(initialY); for (int r = 0; r < rows; r++) { Spring height = Spring.constant(0); for (int c = 0; c < cols; c++) { height = Spring.max(height, getConstraintsForCell(r, c, parent, cols). getHeight()); } for (int c = 0; c < cols; c++) { final SpringLayout.Constraints constraints = getConstraintsForCell(r, c, parent, cols); constraints.setY(y); constraints.setHeight(height); } y = Spring.sum(y, Spring.sum(height, Spring.constant(yPad))); } //Set the parent's size. final SpringLayout.Constraints pCons = layout.getConstraints(parent); pCons.setConstraint(SpringLayout.SOUTH, y); pCons.setConstraint(SpringLayout.EAST, x); } public static void makeCompactGrid(Container parent, int numberOfColumns) { makeCompactGrid(parent, parent.getComponentCount() / numberOfColumns, numberOfColumns, 0, 0, 3, 3); } }