Java tutorial
/******************************************************************************* * Copyright 2015 Geoscience Australia * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. ******************************************************************************/ package au.gov.ga.earthsci.application.parts.globe.handlers; import gov.nasa.worldwind.Configuration; import gov.nasa.worldwind.View; import gov.nasa.worldwind.avlist.AVKey; import gov.nasa.worldwind.geom.Angle; import javax.inject.Inject; import org.eclipse.e4.core.di.annotations.Execute; import org.eclipse.e4.core.di.extensions.Preference; import org.eclipse.e4.ui.model.application.ui.menu.MMenuElement; import org.eclipse.e4.ui.model.application.ui.menu.MMenuItem; import org.eclipse.e4.ui.model.application.ui.menu.MToolItem; import org.eclipse.e4.ui.workbench.modeling.EModelService; import org.eclipse.jface.dialogs.MessageDialog; import org.eclipse.jface.preference.PreferenceDialog; import org.eclipse.swt.widgets.Composite; import org.eclipse.ui.dialogs.PreferencesUtil; import au.gov.ga.earthsci.application.parts.globe.GlobePart; import au.gov.ga.earthsci.application.parts.globe.GlobePreferencePage; import au.gov.ga.earthsci.application.parts.globe.Messages; import au.gov.ga.earthsci.worldwind.common.view.delegate.IDelegateView; import au.gov.ga.earthsci.worldwind.common.view.delegate.IViewDelegate; import au.gov.ga.earthsci.worldwind.common.view.oculus.RiftViewDistortionDelegate; import au.gov.ga.earthsci.worldwind.common.view.oculus.RiftViewPreviewDelegate; import au.gov.ga.earthsci.worldwind.common.view.stereo.StereoMode; import au.gov.ga.earthsci.worldwind.common.view.stereo.StereoViewDelegate; import au.gov.ga.earthsci.worldwind.common.view.stereo.StereoViewParameters; /** * Handler that sets the {@link IDelegateView}'s {@link IViewDelegate} for * changing the stereo rendering mode. * * @author Michael de Hoog (michael.dehoog@ga.gov.au) */ public class StereoHandler { public static final String MENU_NONE = "au.gov.ga.earthsci.application.globe.stereo.menuitems.none"; //$NON-NLS-1$ public static final String MENU_REDCYAN = "au.gov.ga.earthsci.application.globe.stereo.menuitems.redcyan"; //$NON-NLS-1$ public static final String MENU_GREENMAGENTA = "au.gov.ga.earthsci.application.globe.stereo.menuitems.greenmagenta"; //$NON-NLS-1$ public static final String MENU_BLUEYELLOW = "au.gov.ga.earthsci.application.globe.stereo.menuitems.blueyellow"; //$NON-NLS-1$ public static final String MENU_QUADBUFFERED = "au.gov.ga.earthsci.application.globe.stereo.menuitems.quadbuffered"; //$NON-NLS-1$ public static final String MENU_OCULUSRIFT = "au.gov.ga.earthsci.application.globe.stereo.menuitems.oculusrift"; //$NON-NLS-1$ public static final String MENU_OCULUSRIFTPREVIEW = "au.gov.ga.earthsci.application.globe.stereo.menuitems.oculusriftpreview"; //$NON-NLS-1$ private String lastMenuItemId = MENU_REDCYAN; @Inject @Preference(nodePath = GlobePreferencePage.QUALIFIER_ID, value = GlobePreferencePage.STEREO_PREFERENCE_NAME) private boolean stereo; private boolean lastWasStereo = false; @Execute public void execute(MToolItem toolItem, GlobePart globe, EModelService service, Composite parent) { View view = globe.getWorldWindow().getView(); if (view instanceof IDelegateView) { IDelegateView delegateView = (IDelegateView) view; String menuItemId = lastMenuItemId; if (delegateView.getDelegate() != null) { menuItemId = MENU_NONE; } for (MMenuElement menuElement : toolItem.getMenu().getChildren()) { if (menuElement instanceof MMenuItem) { ((MMenuItem) menuElement).setSelected(false); } } setupViewDelegate(delegateView, menuItemId, parent); MMenuItem menuItem = (MMenuItem) service.find(menuItemId, toolItem.getMenu()); if (menuItem != null) { menuItem.setSelected(true); } } } @Execute public void execute(MMenuItem menuItem, GlobePart globe, Composite parent) { View view = globe.getWorldWindow().getView(); if (view instanceof IDelegateView) { setupViewDelegate((IDelegateView) view, menuItem.getElementId(), parent); } } protected void setupViewDelegate(IDelegateView view, String menuItemId, Composite parent) { try { Double initFov = Configuration.getDoubleValue(AVKey.FOV); if (initFov == null) { initFov = 45d; } view.setFieldOfView(Angle.fromDegrees(initFov)); if (MENU_NONE.equals(menuItemId)) { view.setDelegate(null); return; } lastMenuItemId = menuItemId; if (MENU_OCULUSRIFT.equals(menuItemId)) { view.setDelegate(new RiftViewDistortionDelegate()); } else if (MENU_OCULUSRIFTPREVIEW.equals(menuItemId)) { view.setDelegate(new RiftViewPreviewDelegate()); } else { StereoViewDelegate delegate = new StereoViewDelegate(); view.setDelegate(delegate); StereoViewParameters parameters = delegate.getParameters(); parameters.setStereoEnabled(true); if (MENU_REDCYAN.equals(menuItemId)) { parameters.setStereoMode(StereoMode.RC_ANAGLYPH); } else if (MENU_GREENMAGENTA.equals(menuItemId)) { parameters.setStereoMode(StereoMode.GM_ANAGLYPH); } else if (MENU_BLUEYELLOW.equals(menuItemId)) { parameters.setStereoMode(StereoMode.BY_ANAGLYPH); } else { parameters.setStereoMode(StereoMode.STEREO_BUFFER); if (!lastWasStereo && !stereo) { if (MessageDialog.openQuestion(parent.getShell(), Messages.StereoHandler_StereoDialogTitle, Messages.StereoHandler_StereoDialogMessage)) { PreferenceDialog dialog = PreferencesUtil.createPreferenceDialogOn(parent.getShell(), GlobePreferencePage.PREFERENCE_PAGE_ID, null, null); dialog.open(); } } } } } finally { lastWasStereo = MENU_QUADBUFFERED.equals(menuItemId); } } }