/* ******************************************************************************
* Copyright (c) 2006-2012 XMind Ltd. and others.
*
* This file is a part of XMind 3. XMind releases 3 and
* above are dual-licensed under the Eclipse Public License (EPL),
* which is available at http://www.eclipse.org/legal/epl-v10.html
* and the GNU Lesser General Public License (LGPL),
* which is available at http://www.gnu.org/licenses/lgpl.html
* See http://www.xmind.net/license.html for details.
*
* Contributors:
* XMind Ltd. - initial API and implementation
*******************************************************************************/
package org.xmind.ui.internal.properties;
import org.eclipse.draw2d.Layer;
import org.eclipse.jface.action.Action;
import org.eclipse.jface.action.IAction;
import org.eclipse.jface.action.ToolBarManager;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.jface.viewers.IOpenListener;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.ISelectionChangedListener;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.LabelProvider;
import org.eclipse.jface.viewers.OpenEvent;
import org.eclipse.jface.viewers.SelectionChangedEvent;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.osgi.util.NLS;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.DisposeEvent;
import org.eclipse.swt.events.DisposeListener;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;
import org.xmind.gef.GEF;
import org.xmind.gef.IGraphicalViewer;
import org.xmind.gef.Request;
import org.xmind.gef.draw2d.IUseTransparency;
import org.xmind.ui.commands.CommandMessages;
import org.xmind.ui.internal.dialogs.WallpaperDialog;
import org.xmind.ui.mindmap.IMindMapImages;
import org.xmind.ui.mindmap.MindMapUI;
import org.xmind.ui.properties.StyledPropertySectionPart;
import org.xmind.ui.style.Styles;
import org.xmind.ui.viewers.MButton;
import org.xmind.ui.viewers.SWTUtils;
import org.xmind.ui.viewers.SliderViewer;
public class WallpaperPropertySectionPart extends StyledPropertySectionPart {
private class OpacityLabelProvider extends LabelProvider {
public String getText(Object element) {
int value = getOpacityValueFromScaleElement(element);
if (value >= 0) {
return NLS.bind(PropertyMessages.WallpaperOpacity_pattern,
value);
}
return super.getText(element);
}
}
private class OpacitySelectionChangedListener
implements ISelectionChangedListener {
public void selectionChanged(SelectionChangedEvent event) {
int value = getOpacityValueFromScaleSelection(event.getSelection());
if (value >= 0) {
opacityInput.setText(String.valueOf(value));
previewOpacity(value);
}
}
}
private class OpacityPostSelectionChangedListener
implements ISelectionChangedListener {
public void selectionChanged(SelectionChangedEvent event) {
int value = getOpacityValueFromScaleSelection(event.getSelection());
if (value >= 0) {
changeOpacity(value);
selectAllOpacityText(true);
}
}
}
private class RemoveWallpaperAction extends Action {
public RemoveWallpaperAction() {
super(null, AS_PUSH_BUTTON);
setImageDescriptor(
MindMapUI.getImages().get(IMindMapImages.REMOVE, true));
setDisabledImageDescriptor(
MindMapUI.getImages().get(IMindMapImages.REMOVE, false));
setToolTipText(PropertyMessages.RemoveWallpaper_toolTip);
};
public void run() {
removeWallpaper();
}
}
private MButton selectWallpaperWidget;
private WallpaperDialog selectWallpaperDialog;
private IAction removeWallpaperAction;
private Composite opacityGroup;
private Text opacityInput;
private SliderViewer opacityScale;
private Image selectWallpaperImage;
private Image opacityImage;
protected void createContent(Composite parent) {
Composite line1 = new Composite(parent, SWT.NONE);
line1.setLayoutData(
new GridData(GridData.FILL, GridData.FILL, true, false));
GridLayout layout1 = new GridLayout(2, false);
layout1.marginWidth = 0;
layout1.marginHeight = 0;
layout1.horizontalSpacing = 3;
line1.setLayout(layout1);
createLineContent1(line1);
opacityGroup = new Composite(parent, SWT.NONE);
opacityGroup.setLayoutData(
new GridData(GridData.FILL, GridData.FILL, true, false));
GridLayout layout2 = new GridLayout(4, false);
layout2.marginWidth = 0;
layout2.marginHeight = 0;
layout2.horizontalSpacing = 3;
opacityGroup.setLayout(layout2);
createLineContent2(opacityGroup);
parent.addDisposeListener(new DisposeListener() {
public void widgetDisposed(DisposeEvent e) {
releaseImages();
}
});
}
private void createLineContent1(Composite parent) {
selectWallpaperWidget = new MButton(parent, MButton.NORMAL);
selectWallpaperWidget.getControl().setLayoutData(
new GridData(GridData.FILL, GridData.FILL, true, false));
selectWallpaperWidget.setImage(getSelectWallpaperImage());
selectWallpaperWidget.setText(PropertyMessages.SelectWallpaper_text);
selectWallpaperWidget.getControl()
.setToolTipText(PropertyMessages.SelectWallpaper_toolTip);
selectWallpaperWidget.addOpenListener(new IOpenListener() {
public void open(OpenEvent event) {
openSelectWallpaperDialog();
}
});
removeWallpaperAction = new RemoveWallpaperAction();
ToolBarManager removeWallpaperBar = new ToolBarManager(SWT.FLAT);
removeWallpaperBar.add(removeWallpaperAction);
removeWallpaperBar.createControl(parent);
removeWallpaperBar.getControl().setLayoutData(
new GridData(GridData.END, GridData.CENTER, false, false));
}
private void createLineContent2(Composite parent) {
Label opacityLabel = new Label(parent, SWT.NONE);
opacityLabel.setImage(getOpacityImage());
opacityLabel.setLayoutData(new GridData(GridData.BEGINNING,
GridData.CENTER, false, false));
opacityInput = new Text(parent, SWT.BORDER | SWT.SINGLE | SWT.TRAIL);
SWTUtils.makeNumeralInput(opacityLabel, false, false);
GridData inputData = new GridData(GridData.FILL, GridData.CENTER, false,
false);
inputData.widthHint = 25;
opacityInput.setLayoutData(inputData);
opacityInput.setTextLimit(3);
opacityInput.setToolTipText(PropertyMessages.WallpaperOpacity_toolTip);
Listener inputEventHandler = new Listener() {
public void handleEvent(Event event) {
if (event.type == SWT.DefaultSelection) {
int value = getOpacityValueFromTextWidget();
if (value >= 0) {
changeOpacity(value);
selectAllOpacityText(false);
}
} else if (event.type == SWT.KeyDown) {
if (event.character == SWT.ESC) {
updateOpacityToWidget();
}
} else if (event.type == SWT.FocusIn) {
selectAllOpacityText(false);
}
}
};
opacityInput.addListener(SWT.DefaultSelection, inputEventHandler);
opacityInput.addListener(SWT.KeyDown, inputEventHandler);
opacityInput.addListener(SWT.FocusIn, inputEventHandler);
Label percentageLabel = new Label(parent, SWT.NONE);
percentageLabel.setText("%"); //$NON-NLS-1$
percentageLabel.setLayoutData(
new GridData(GridData.FILL, GridData.CENTER, false, false));
opacityScale = new SliderViewer(parent, SWT.HORIZONTAL);
opacityScale.setLabelProvider(new OpacityLabelProvider());
opacityScale.getControl().setLayoutData(
new GridData(GridData.FILL, GridData.CENTER, true, false));
opacityScale.getControl().setBackground(parent.getBackground());
opacityScale.addSelectionChangedListener(
new OpacitySelectionChangedListener());
opacityScale.addPostSelectionChangedListener(
new OpacityPostSelectionChangedListener());
}
private void selectAllOpacityText(final boolean takeFocus) {
if (opacityInput != null && !opacityInput.isDisposed()) {
opacityInput.getDisplay().asyncExec(new Runnable() {
public void run() {
if (opacityInput != null && !opacityInput.isDisposed()) {
if (takeFocus)
opacityInput.setFocus();
opacityInput.selectAll();
}
}
});
}
}
private int getOpacityValueFromTextWidget() {
if (opacityInput != null && !opacityInput.isDisposed()) {
try {
return Math.min(100, Integer.parseInt(opacityInput.getText()));
} catch (NumberFormatException e) {
}
}
return -1;
}
private int getOpacityValueFromScaleSelection(ISelection selection) {
Object o = ((IStructuredSelection) selection).getFirstElement();
return getOpacityValueFromScaleElement(o);
}
private int getOpacityValueFromScaleElement(Object o) {
if (o instanceof Double) {
double value = ((Double) o).doubleValue();
return (int) Math.round(value * 100);
}
return -1;
}
private Image getSelectWallpaperImage() {
if (selectWallpaperImage == null || selectWallpaperImage.isDisposed()) {
ImageDescriptor icon = MindMapUI.getImages()
.get(IMindMapImages.INSERT_IMAGE, true);
if (icon != null) {
selectWallpaperImage = icon.createImage(false);
}
}
return selectWallpaperImage;
}
private Image getOpacityImage() {
if (opacityImage == null) {
ImageDescriptor icon = MindMapUI.getImages()
.get(IMindMapImages.OPAQUE);
if (icon != null) {
opacityImage = icon.createImage(false);
}
}
return opacityImage;
}
private void releaseImages() {
if (selectWallpaperImage != null) {
selectWallpaperImage.dispose();
selectWallpaperImage = null;
}
if (opacityImage != null) {
opacityImage.dispose();
opacityImage = null;
}
}
public void setFocus() {
if (selectWallpaperWidget != null
&& !selectWallpaperWidget.getControl().isDisposed()) {
selectWallpaperWidget.getControl().setFocus();
}
}
public void dispose() {
super.dispose();
selectWallpaperDialog = null;
selectWallpaperWidget = null;
removeWallpaperAction = null;
opacityGroup = null;
opacityInput = null;
opacityScale = null;
}
protected void doRefresh() {
String value = getStyleValue(Styles.Background, null);
boolean hasWallpaper = value != null;
if (removeWallpaperAction != null)
removeWallpaperAction.setEnabled(hasWallpaper);
if (opacityGroup != null && !opacityGroup.isDisposed())
Utils.setAllEnabled(opacityGroup, hasWallpaper);
updateOpacityToWidget();
}
private void updateOpacityToWidget() {
String value = getStyleValue(Styles.Opacity, null);
double doubleValue = parseOpacityValue(value);
doubleValue = Math.max(0, Math.min(1, doubleValue));
if (opacityInput != null && !opacityInput.isDisposed()) {
opacityInput.setText(
String.valueOf((int) Math.round(doubleValue * 100)));
}
if (opacityScale != null && !opacityScale.getControl().isDisposed()) {
opacityScale.setSelection(
new StructuredSelection(Double.valueOf(doubleValue)));
}
}
private double parseOpacityValue(String value) {
if (value != null) {
try {
return Double.parseDouble(value);
} catch (NumberFormatException e) {
}
}
return 1;
}
private void openSelectWallpaperDialog() {
if (selectWallpaperWidget != null
&& selectWallpaperWidget.getControl() != null
&& !selectWallpaperWidget.getControl().isDisposed()) {
if (selectWallpaperDialog == null) {
Control handle = selectWallpaperWidget.getControl();
selectWallpaperDialog = new WallpaperDialog(handle.getShell(),
handle);
}
selectWallpaperDialog.setMindMapViewer(getActiveViewer());
selectWallpaperDialog.open();
Shell shell = selectWallpaperDialog.getShell();
if (shell != null && !shell.isDisposed()) {
selectWallpaperWidget.setForceFocus(true);
shell.addListener(SWT.Dispose, new Listener() {
public void handleEvent(Event event) {
if (selectWallpaperWidget != null
&& !selectWallpaperWidget.getControl()
.isDisposed()) {
selectWallpaperWidget.setForceFocus(false);
}
}
});
}
}
}
private void removeWallpaper() {
Request request = createStyleRequest(
CommandMessages.Command_ModifyWallpaper);
addStyle(request, Styles.Background, ""); //$NON-NLS-1$
sendRequest(request);
}
private void changeOpacity(int opacityValue) {
Request request = createStyleRequest(
CommandMessages.Command_ModifyWallpaperOpacity);
String value = String.valueOf((double) opacityValue * 1.0 / 100);
addStyle(request, Styles.Opacity, value);
sendRequest(request);
}
private void previewOpacity(int value) {
IGraphicalViewer viewer = getActiveViewer();
if (viewer != null) {
Layer layer = viewer.getLayer(GEF.LAYER_BACKGROUND);
if (layer != null && layer instanceof IUseTransparency) {
int alpha = value * 255 / 100;
((IUseTransparency) layer).setSubAlpha(alpha);
}
}
}
}
