Provide interface for showing state type names per time graph entry

[deliverable/tracecompass.git] / org.eclipse.linuxtools.tmf.ui / src / org / eclipse / linuxtools / tmf / ui / widgets / timegraph / dialogs / TimeGraphLegend.java

/*******************************************************************************\r
 * Copyright (c) 2009, 2012 Ericsson.\r
 *\r
 * All rights reserved. This program and the accompanying materials are\r
 * made available under the terms of the Eclipse Public License v1.0 which\r
 * accompanies this distribution, and is available at\r
 * http://www.eclipse.org/legal/epl-v10.html\r
 *\r
 * Contributors:\r
 *   Alvaro Sanchez-Leon - Initial API and implementation\r
 *   Patrick Tasse - Refactoring\r
 *******************************************************************************/\r
\r
package org.eclipse.linuxtools.tmf.ui.widgets.timegraph.dialogs;\r
\r
import org.eclipse.jface.dialogs.IDialogConstants;\r
import org.eclipse.jface.dialogs.TitleAreaDialog;\r
import org.eclipse.jface.resource.JFaceResources;\r
import org.eclipse.jface.resource.LocalResourceManager;\r
import org.eclipse.linuxtools.internal.tmf.ui.Messages;\r
import org.eclipse.linuxtools.tmf.ui.widgets.timegraph.ITimeGraphPresentationProvider;\r
import org.eclipse.linuxtools.tmf.ui.widgets.timegraph.StateItem;\r
import org.eclipse.swt.SWT;\r
import org.eclipse.swt.graphics.Color;\r
import org.eclipse.swt.graphics.GC;\r
import org.eclipse.swt.graphics.RGB;\r
import org.eclipse.swt.graphics.Rectangle;\r
import org.eclipse.swt.layout.GridData;\r
import org.eclipse.swt.layout.GridLayout;\r
import org.eclipse.swt.widgets.Canvas;\r
import org.eclipse.swt.widgets.Composite;\r
import org.eclipse.swt.widgets.Control;\r
import org.eclipse.swt.widgets.Display;\r
import org.eclipse.swt.widgets.Event;\r
import org.eclipse.swt.widgets.Group;\r
import org.eclipse.swt.widgets.Label;\r
import org.eclipse.swt.widgets.Listener;\r
import org.eclipse.swt.widgets.Shell;\r
\r
/**\r
 * Legend for the colors used in the time graph view\r
 *\r
 * @version 1.0\r
 * @author Alvaro Sanchez-Leon\r
 * @author Patrick Tasse\r
 */\r
public class TimeGraphLegend extends TitleAreaDialog {\r
\r
    private final ITimeGraphPresentationProvider provider;\r
    private final LocalResourceManager fResourceManager = new LocalResourceManager(JFaceResources.getResources());\r
\r
    /**\r
     * Open the time graph legend window\r
     *\r
     * @param parent\r
     *            The parent shell\r
     * @param provider\r
     *            The presentation provider\r
     */\r
    public static void open(Shell parent, ITimeGraphPresentationProvider provider) {\r
        (new TimeGraphLegend(parent, provider)).open();\r
    }\r
\r
    /**\r
     * Standard constructor\r
     *\r
     * @param parent\r
     *            The parent shell\r
     * @param provider\r
     *            The presentation provider\r
     */\r
    public TimeGraphLegend(Shell parent, ITimeGraphPresentationProvider provider) {\r
        super(parent);\r
        this.provider = provider;\r
        this.setShellStyle(getShellStyle());\r
    }\r
\r
    @Override\r
    protected Control createDialogArea(Composite parent) {\r
        Composite dlgArea = (Composite) super.createDialogArea(parent);\r
        Composite composite = new Composite(dlgArea, SWT.NONE);\r
\r
        GridLayout layout = new GridLayout();\r
        layout.numColumns = 2;\r
        composite.setLayout(layout);\r
        GridData gd = new GridData(SWT.FILL, SWT.FILL, true, true);\r
        composite.setLayoutData(gd);\r
\r
        createStatesGroup(composite);\r
\r
        setTitle(Messages.TmfTimeLegend_LEGEND);\r
        setDialogHelpAvailable(false);\r
        setHelpAvailable(false);\r
\r
        return composite;\r
    }\r
\r
    private void createStatesGroup(Composite composite) {\r
        Group gs = new Group(composite, SWT.NONE);\r
        String stateTypeName = provider.getStateTypeName();\r
        StringBuffer buffer = new StringBuffer();\r
        if (!stateTypeName.isEmpty()) {\r
            buffer.append(stateTypeName);\r
            buffer.append(" "); //$NON-NLS-1$\r
        }\r
        buffer.append(Messages.TmfTimeLegend_StateTypeName);\r
        gs.setText(buffer.toString());\r
\r
        GridData gd = new GridData(SWT.FILL, SWT.FILL, true, true);\r
        gs.setLayoutData(gd);\r
\r
        GridLayout layout = new GridLayout();\r
        layout.numColumns = 2;\r
        layout.marginWidth = 20;\r
        layout.marginBottom = 10;\r
        gs.setLayout(layout);\r
\r
        // Go through all the defined pairs of state color and state name and display them.\r
        StateItem[] stateItems = provider.getStateTable();\r
        for (int i = 0; i < stateItems.length; i++) {\r
            //Get the color related to the index\r
            RGB rgb = stateItems[i].getStateColor();\r
\r
            //Get the given name, provided by the interface to the application\r
            String stateName = stateItems[i].getStateString();\r
\r
            // draw color with name\r
            Bar bar = new Bar(gs, rgb);\r
            gd = new GridData();\r
            gd.widthHint = 40;\r
            gd.heightHint = 20;\r
            gd.verticalIndent = 8;\r
            bar.setLayoutData(gd);\r
            Label name = new Label(gs, SWT.NONE);\r
            name.setText(stateName);\r
            gd = new GridData();\r
            gd.horizontalIndent = 10;\r
            gd.verticalIndent = 8;\r
            name.setLayoutData(gd);\r
        }\r
    }\r
\r
    @Override\r
    protected void configureShell(Shell shell) {\r
        super.configureShell(shell);\r
        shell.setText(Messages.TmfTimeLegend_TRACE_STATES_TITLE);\r
    }\r
\r
    @Override\r
    protected void createButtonsForButtonBar(Composite parent) {\r
        createButton(parent, IDialogConstants.OK_ID, IDialogConstants.OK_LABEL,\r
                true);\r
    }\r
\r
    class Bar extends Canvas {\r
        private final Color color;\r
\r
        public Bar(Composite parent, RGB rgb) {\r
            super(parent, SWT.NONE);\r
\r
            color = fResourceManager.createColor(rgb);\r
            addListener(SWT.Paint, new Listener() {\r
                @Override\r
                public void handleEvent(Event event) {\r
                    draw(event.gc);\r
                }\r
            });\r
        }\r
\r
        private void draw(GC gc) {\r
            Rectangle r = getClientArea();\r
            gc.setBackground(color);\r
            gc.fillRectangle(r);\r
            gc.setForeground(Display.getDefault().getSystemColor(SWT.COLOR_BLACK));\r
            gc.drawRectangle(0, 0, r.width - 1, r.height - 1);\r
        }\r
\r
        @Override\r
        public void dispose() {\r
            super.dispose();\r
            color.dispose();\r
        }\r
\r
    }\r
\r
}\r