Java tutorial
/* * =========================================================== * JFreeChart : a free chart library for the Java(tm) platform * =========================================================== * * (C) Copyright 2000-2008, by Object Refinery Limited and Contributors. * * Project Info: http://www.jfree.org/jfreechart/index.html * * This library is free software; you can redistribute it and/or modify it * under the terms of the GNU Lesser General Public License as published by * the Free Software Foundation; either version 2.1 of the License, or * (at your option) any later version. * * This library 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 Lesser General Public * License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, * USA. * * [Java is a trademark or registered trademark of Sun Microsystems, Inc. * in the United States and other countries.] * * ------------------ * SWTAxisEditor.java * ------------------ * (C) Copyright 2006-2008, by Henry Proudhon and Contributors. * * Original Author: Henry Proudhon (henry.proudhon AT ensmp.fr); * Contributor(s): David Gilbert (for Object Refinery Limited); * * Changes * ------- * 01-Aug-2006 : New class (HP); * 07-Feb-2007 : Fixed bug 1647749, handle null axis labels (DG); * 18-Dec-2008 : Use ResourceBundleWrapper - see patch 1607918 by * Jess Thrysoee (DG); */ package com.rcp.wbw.demo.editor; import java.awt.Paint; import java.util.ResourceBundle; import org.eclipse.swt.SWT; import org.eclipse.swt.events.SelectionAdapter; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.graphics.Color; import org.eclipse.swt.graphics.Font; import org.eclipse.swt.graphics.FontData; import org.eclipse.swt.graphics.RGB; import org.eclipse.swt.layout.FillLayout; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Button; import org.eclipse.swt.widgets.ColorDialog; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.FontDialog; import org.eclipse.swt.widgets.Group; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.TabFolder; import org.eclipse.swt.widgets.TabItem; import org.eclipse.swt.widgets.Text; import org.jfree.chart.axis.Axis; import org.jfree.chart.axis.NumberAxis; import org.jfree.chart.util.ResourceBundleWrapper; import com.rcp.wbw.demo.swt.SWTPaintCanvas; import com.rcp.wbw.demo.swt.SWTUtils; /** * An editor for axis properties. */ class SWTAxisEditor extends Composite { /** The axis label. */ private Text label; /** The font used to draw the axis labels. */ private FontData labelFont; /** The paint (color) used to draw the axis labels. */ private Color labelPaintColor; /** The font used to draw the axis tick labels. */ private FontData tickLabelFont; /** The paint (color) used to draw the axis tick labels. */ private Color tickLabelPaintColor; /** A field showing a description of the label font. */ private Text labelFontField; /** * A field containing a description of the font * for displaying tick labels on the axis. */ private Text tickLabelFontField; /** The resourceBundle for the localization. */ protected static ResourceBundle localizationResources = ResourceBundleWrapper .getBundle("org.jfree.chart.editor.LocalizationBundle"); /** Font object used to handle a change of font. */ private Font font; /** A flag that indicates whether or not the tick labels are visible. */ private Button showTickLabelsCheckBox; /** A flag that indicates whether or not the tick marks are visible. */ private Button showTickMarksCheckBox; /** A tabbed pane for... */ private TabFolder otherTabs; /** * Standard constructor: builds a composite for displaying/editing * the properties of the specified axis. * * @param parent * The parent composite. * @param style * The SWT style of the SwtAxisEditor. * @param axis * the axis whose properties are to be displayed/edited * in the composite. */ public SWTAxisEditor(Composite parent, int style, Axis axis) { super(parent, style); this.labelFont = SWTUtils.toSwtFontData(getDisplay(), axis.getLabelFont(), true); this.labelPaintColor = SWTUtils.toSwtColor(getDisplay(), axis.getLabelPaint()); this.tickLabelFont = SWTUtils.toSwtFontData(getDisplay(), axis.getTickLabelFont(), true); this.tickLabelPaintColor = SWTUtils.toSwtColor(getDisplay(), axis.getTickLabelPaint()); FillLayout layout = new FillLayout(SWT.VERTICAL); layout.marginHeight = layout.marginWidth = 4; setLayout(layout); Group general = new Group(this, SWT.NONE); general.setLayout(new GridLayout(3, false)); general.setText(localizationResources.getString("General")); // row 1 new Label(general, SWT.NONE).setText(localizationResources.getString("Label")); this.label = new Text(general, SWT.BORDER); if (axis.getLabel() != null) { this.label.setText(axis.getLabel()); } this.label.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false)); new Label(general, SWT.NONE).setText(""); // empty cell // row 2 new Label(general, SWT.NONE).setText(localizationResources.getString("Font")); this.labelFontField = new Text(general, SWT.BORDER); this.labelFontField.setText(this.labelFont.toString()); this.labelFontField.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false)); Button selectFontButton = new Button(general, SWT.PUSH); selectFontButton.setText(localizationResources.getString("Select...")); selectFontButton.addSelectionListener(new SelectionAdapter() { public void widgetSelected(SelectionEvent event) { // Create the color-change dialog FontDialog dlg = new FontDialog(getShell()); dlg.setText(localizationResources.getString("Font_Selection")); dlg.setFontList(new FontData[] { SWTAxisEditor.this.labelFont }); if (dlg.open() != null) { // Dispose of any fonts we have created if (SWTAxisEditor.this.font != null) { SWTAxisEditor.this.font.dispose(); } // Create the new font and set it into the title // label SWTAxisEditor.this.font = new Font(getShell().getDisplay(), dlg.getFontList()); // label.setFont(font); SWTAxisEditor.this.labelFontField.setText(SWTAxisEditor.this.font.getFontData()[0].toString()); SWTAxisEditor.this.labelFont = SWTAxisEditor.this.font.getFontData()[0]; } } }); // row 3 new Label(general, SWT.NONE).setText(localizationResources.getString("Paint")); // Use a colored text field to show the color final SWTPaintCanvas colorCanvas = new SWTPaintCanvas(general, SWT.NONE, this.labelPaintColor); GridData canvasGridData = new GridData(SWT.FILL, SWT.CENTER, true, false); canvasGridData.heightHint = 20; colorCanvas.setLayoutData(canvasGridData); Button selectColorButton = new Button(general, SWT.PUSH); selectColorButton.setText(localizationResources.getString("Select...")); selectColorButton.addSelectionListener(new SelectionAdapter() { public void widgetSelected(SelectionEvent event) { // Create the color-change dialog ColorDialog dlg = new ColorDialog(getShell()); dlg.setText(localizationResources.getString("Title_Color")); dlg.setRGB(SWTAxisEditor.this.labelPaintColor.getRGB()); RGB rgb = dlg.open(); if (rgb != null) { // create the new color and set it to the // SwtPaintCanvas SWTAxisEditor.this.labelPaintColor = new Color(getDisplay(), rgb); colorCanvas.setColor(SWTAxisEditor.this.labelPaintColor); } } }); Group other = new Group(this, SWT.NONE); FillLayout tabLayout = new FillLayout(); tabLayout.marginHeight = tabLayout.marginWidth = 4; other.setLayout(tabLayout); other.setText(localizationResources.getString("Other")); this.otherTabs = new TabFolder(other, SWT.NONE); TabItem item1 = new TabItem(this.otherTabs, SWT.NONE); item1.setText(" " + localizationResources.getString("Ticks") + " "); Composite ticks = new Composite(this.otherTabs, SWT.NONE); ticks.setLayout(new GridLayout(3, false)); this.showTickLabelsCheckBox = new Button(ticks, SWT.CHECK); this.showTickLabelsCheckBox.setText(localizationResources.getString("Show_tick_labels")); this.showTickLabelsCheckBox.setSelection(axis.isTickLabelsVisible()); this.showTickLabelsCheckBox.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 3, 1)); new Label(ticks, SWT.NONE).setText(localizationResources.getString("Tick_label_font")); this.tickLabelFontField = new Text(ticks, SWT.BORDER); this.tickLabelFontField.setText(this.tickLabelFont.toString()); // tickLabelFontField.setFont(SwtUtils.toSwtFontData(getDisplay(), // axis.getTickLabelFont())); this.tickLabelFontField.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false)); Button selectTickLabelFontButton = new Button(ticks, SWT.PUSH); selectTickLabelFontButton.setText(localizationResources.getString("Select...")); selectTickLabelFontButton.addSelectionListener(new SelectionAdapter() { public void widgetSelected(SelectionEvent event) { // Create the font-change dialog FontDialog dlg = new FontDialog(getShell()); dlg.setText(localizationResources.getString("Font_Selection")); dlg.setFontList(new FontData[] { SWTAxisEditor.this.tickLabelFont }); if (dlg.open() != null) { // Dispose of any fonts we have created if (SWTAxisEditor.this.font != null) { SWTAxisEditor.this.font.dispose(); } // Create the new font and set it into the title // label SWTAxisEditor.this.font = new Font(getShell().getDisplay(), dlg.getFontList()); // tickLabelFontField.setFont(font); SWTAxisEditor.this.tickLabelFontField .setText(SWTAxisEditor.this.font.getFontData()[0].toString()); SWTAxisEditor.this.tickLabelFont = SWTAxisEditor.this.font.getFontData()[0]; } } }); this.showTickMarksCheckBox = new Button(ticks, SWT.CHECK); this.showTickMarksCheckBox.setText(localizationResources.getString("Show_tick_marks")); this.showTickMarksCheckBox.setSelection(axis.isTickMarksVisible()); this.showTickMarksCheckBox.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false, 3, 1)); item1.setControl(ticks); } /** * A static method that returns a panel that is appropriate * for the axis type. * * @param parent * the parent. * @param style * the style. * @param axis * the axis whose properties are to be displayed/edited * in the composite. * @return A composite or <code>null</code< if axis is <code>null</code>. */ public static SWTAxisEditor getInstance(Composite parent, int style, Axis axis) { if (axis != null) { // return the appropriate axis editor if (axis instanceof NumberAxis) return new SWTNumberAxisEditor(parent, style, (NumberAxis) axis); else return new SWTAxisEditor(parent, style, axis); } else return null; } /** * Returns a reference to the tabbed composite. * * @return A reference to the tabbed composite. */ public TabFolder getOtherTabs() { return this.otherTabs; } /** * Returns the current axis label. * * @return The current axis label. */ public String getLabel() { return this.label.getText(); } /** * Returns the current label font. * * @return The current label font. */ public java.awt.Font getLabelFont() { return SWTUtils.toAwtFont(getDisplay(), this.labelFont, true); } /** * Returns the current label paint. * * @return The current label paint. */ public Paint getTickLabelPaint() { return SWTUtils.toAwtColor(this.tickLabelPaintColor); } /** * Returns the current label font. * * @return The current label font. */ public java.awt.Font getTickLabelFont() { return SWTUtils.toAwtFont(getDisplay(), this.tickLabelFont, true); } /** * Returns the current label paint. * * @return The current label paint. */ public Paint getLabelPaint() { return SWTUtils.toAwtColor(this.labelPaintColor); } /** * Sets the properties of the specified axis to match * the properties defined on this panel. * * @param axis * the axis. */ public void setAxisProperties(Axis axis) { axis.setLabel(getLabel()); axis.setLabelFont(getLabelFont()); axis.setLabelPaint(getLabelPaint()); axis.setTickMarksVisible(this.showTickMarksCheckBox.getSelection()); axis.setTickLabelsVisible(this.showTickLabelsCheckBox.getSelection()); axis.setTickLabelFont(getTickLabelFont()); axis.setTickLabelPaint(getTickLabelPaint()); } }