Java tutorial
/******************************************************************************* * Copyright (C) 2005, 2013 Wolfgang Schramm and Contributors * * This program is free software; you can redistribute it and/or modify it under * the terms of the GNU General Public License as published by the Free Software * Foundation version 2 of the License. * * This program 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 for more details. * * You should have received a copy of the GNU General Public License along with * this program; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110, USA *******************************************************************************/ package net.tourbook.map2.view; import java.text.NumberFormat; import java.util.ArrayList; import net.tourbook.common.UI; import net.tourbook.common.util.HoveredAreaContext; import net.tourbook.common.util.ITourToolTipProvider; import net.tourbook.common.util.TourToolTip; import net.tourbook.data.TourWayPoint; import net.tourbook.ui.IMapToolTipProvider; import net.tourbook.ui.Messages; import org.eclipse.jface.layout.GridDataFactory; import org.eclipse.jface.layout.GridLayoutFactory; import org.eclipse.jface.layout.PixelConverter; import org.eclipse.jface.resource.JFaceResources; import org.eclipse.swt.SWT; import org.eclipse.swt.graphics.Color; import org.eclipse.swt.graphics.Font; import org.eclipse.swt.graphics.GC; import org.eclipse.swt.graphics.Point; import org.eclipse.swt.graphics.Rectangle; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Event; import org.eclipse.swt.widgets.Label; import de.byteholder.geoclipse.map.Tile; import de.byteholder.geoclipse.mapprovider.MP; public class WayPointToolTipProvider implements ITourToolTipProvider, IMapToolTipProvider { // private TourToolTip _tourToolTip; private Color _bgColor; private Color _fgColor; private Font _boldFont; private TourWayPoint _hoveredWayPoint; private final NumberFormat _nf_1_1 = NumberFormat.getNumberInstance(); { _nf_1_1.setMinimumFractionDigits(1); _nf_1_1.setMaximumFractionDigits(1); } public WayPointToolTipProvider() { } @Override public void afterHideToolTip() { _hoveredWayPoint = null; } @Override public Composite createToolTipContentArea(final Event event, final Composite parent) { if (_hoveredWayPoint == null) { // this case should not happen return null; } final Display display = parent.getDisplay(); _bgColor = display.getSystemColor(SWT.COLOR_INFO_BACKGROUND); _fgColor = display.getSystemColor(SWT.COLOR_INFO_FOREGROUND); _boldFont = JFaceResources.getFontRegistry().getBold(JFaceResources.DIALOG_FONT); return createUI(parent); } private Composite createUI(final Composite parent) { final PixelConverter pc = new PixelConverter(parent); Label label; /* * shell container is necessary because the margins of the inner container will hide the * tooltip when the mouse is hovered, which is not as it should be. */ final Composite shellContainer = new Composite(parent, SWT.NONE); shellContainer.setForeground(_fgColor); shellContainer.setBackground(_bgColor); GridLayoutFactory.fillDefaults().applyTo(shellContainer); { final Composite container = new Composite(shellContainer, SWT.NONE); container.setForeground(_fgColor); container.setBackground(_bgColor); GridLayoutFactory.fillDefaults()// .margins(TourToolTip.SHELL_MARGIN, TourToolTip.SHELL_MARGIN).numColumns(2).spacing(5, 2) .applyTo(container); // container.setBackground(Display.getCurrent().getSystemColor(SWT.COLOR_RED)); { /* * name */ final String name = _hoveredWayPoint.getName(); if (name != null) { label = createUILabel(container, name); GridDataFactory.fillDefaults().span(2, 1).indent(0, -5).applyTo(label); label.setFont(_boldFont); } /* * comment/description */ final String description = _hoveredWayPoint.getDescription(); if (description != null) { createUITextarea(container, Messages.Tooltip_WayPoint_Label_Description, description, pc); } final String comment = _hoveredWayPoint.getComment(); if (comment != null) { // ignore comment when it has the same content as the description if (description == null || (description != null && description.equals(comment) == false)) { createUITextarea(container, Messages.Tooltip_WayPoint_Label_Comment, comment, pc); } } createUIItem(container, Messages.Tooltip_WayPoint_Label_Category, _hoveredWayPoint.getCategory()); createUIItem(container, Messages.Tooltip_WayPoint_Label_Symbol, _hoveredWayPoint.getSymbol()); /* * altitude */ final float wpAltitude = _hoveredWayPoint.getAltitude(); if (wpAltitude != Float.MIN_VALUE) { final float altitude = wpAltitude / net.tourbook.ui.UI.UNIT_VALUE_ALTITUDE; createUIItem(container, Messages.Tooltip_WayPoint_Label_Altitude, // _nf_1_1.format(altitude) + UI.SPACE + UI.UNIT_LABEL_ALTITUDE); } } } return shellContainer; } private void createUIItem(final Composite parent, final String label, final String value) { if (value != null) { createUILabel(parent, label); createUILabel(parent, value); } } private Label createUILabel(final Composite parent, final String labelText) { final Label label = new Label(parent, SWT.NONE); label.setForeground(_fgColor); label.setBackground(_bgColor); if (labelText != null) { label.setText(labelText); } return label; } private void createUITextarea(final Composite parent, final String labelText, final String areaText, final PixelConverter pc) { Label label; final int horizontalHint = areaText.length() > 80 ? pc.convertWidthInCharsToPixels(80) : SWT.DEFAULT; label = createUILabel(parent, labelText); GridDataFactory.fillDefaults()// .align(SWT.FILL, SWT.BEGINNING).applyTo(label); label = new Label(parent, SWT.WRAP); GridDataFactory.fillDefaults()// .hint(horizontalHint, SWT.DEFAULT).applyTo(label); label.setForeground(_fgColor); label.setBackground(_bgColor); label.setText(areaText); } @Override public HoveredAreaContext getHoveredContext(final int mousePositionX, final int mousePositionY, final Rectangle worldPixelTopLeftViewPort, final MP mp, final int mapZoomLevel, final int tilePixelSize, final boolean isTourPaintMethodEnhanced, final Object requestedObject) { // get mouse world position final int worldPixelMouseX = worldPixelTopLeftViewPort.x + mousePositionX; final int worldPixelMouseY = worldPixelTopLeftViewPort.y + mousePositionY; // get tile from mouse position final int tileX = worldPixelMouseX / tilePixelSize; final int tileY = worldPixelMouseY / tilePixelSize; final int worldPixelTileX = tileX * tilePixelSize; final int worldPixelTileY = tileY * tilePixelSize; // get tile from the map provider final Tile tile = mp.getTile(tileX, tileY, mapZoomLevel); final ArrayList<Rectangle> wayPointBounds = tile.getWayPointBounds(mapZoomLevel, isTourPaintMethodEnhanced); if (wayPointBounds != null) { // tile contains way points final ArrayList<TourWayPoint> allTileTwp = tile.getWayPoints(mapZoomLevel); int wpIndex = -1; for (final Rectangle wayPointBoundInTile : wayPointBounds) { final int wpInTileX = wayPointBoundInTile.x; final int wpInTileY = wayPointBoundInTile.y; final int worldPixelWayPointX = worldPixelTileX + wpInTileX; final int worldPixelWayPointY = worldPixelTileY + wpInTileY; final int mouseInTileX = worldPixelMouseX - worldPixelWayPointX; final int mouseInTileY = worldPixelMouseY - worldPixelWayPointY; wpIndex++; // check if mouse is within a way point bound (image) if (mouseInTileX >= 0 && mouseInTileX <= wayPointBoundInTile.width && mouseInTileY >= 0 && mouseInTileY <= wayPointBoundInTile.height) { final TourWayPoint hoveredTwp = allTileTwp.get(wpIndex); if (requestedObject != null && requestedObject != hoveredTwp) { // this is not the requested way point continue; } final int devWayPointX = worldPixelWayPointX - worldPixelTopLeftViewPort.x; final int devWayPointY = worldPixelWayPointY - worldPixelTopLeftViewPort.y; _hoveredWayPoint = hoveredTwp; return new HoveredAreaContext(this, hoveredTwp, devWayPointX, devWayPointY, wayPointBoundInTile.width, wayPointBoundInTile.height); } } } _hoveredWayPoint = null; return null; } @Override public void hideToolTip() { } @Override public void paint(final GC gc, final Rectangle rectangle) { // painting is done in TourPainter } @Override public boolean setHoveredLocation(final int x, final int y) { // this method is not used in this tool tip provider, the method getHoveredContext() is used instead return false; } @Override public void setTourToolTip(final TourToolTip tourToolTip) { // this feature is not yet used in this tool tip provider // _tourToolTip = tourToolTip; } @Override public void show(final Point point) { } }