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/*******************************************************************************
* Copyright (c) 2013, 2014 Ericsson
*
* All rights reserved. This program and the accompanying materials are
* made available under the terms of the Eclipse Public License v1.0 which
* accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Patrick Tasse - Initial API and implementation
*******************************************************************************/
package org.eclipse.tracecompass.tmf.ui.views.callstack;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.graphics.RGB;
import org.eclipse.swt.graphics.Rectangle;
import org.eclipse.tracecompass.internal.tmf.ui.Activator;
import org.eclipse.tracecompass.internal.tmf.ui.Messages;
import org.eclipse.tracecompass.statesystem.core.ITmfStateSystem;
import org.eclipse.tracecompass.statesystem.core.exceptions.AttributeNotFoundException;
import org.eclipse.tracecompass.statesystem.core.exceptions.StateSystemDisposedException;
import org.eclipse.tracecompass.statesystem.core.exceptions.TimeRangeException;
import org.eclipse.tracecompass.statesystem.core.statevalue.ITmfStateValue;
import org.eclipse.tracecompass.tmf.ui.widgets.timegraph.StateItem;
import org.eclipse.tracecompass.tmf.ui.widgets.timegraph.TimeGraphPresentationProvider;
import org.eclipse.tracecompass.tmf.ui.widgets.timegraph.model.ITimeEvent;
import org.eclipse.tracecompass.tmf.ui.widgets.timegraph.model.ITimeGraphEntry;
import org.eclipse.tracecompass.tmf.ui.widgets.timegraph.model.NullTimeEvent;
import org.eclipse.tracecompass.tmf.ui.widgets.timegraph.widgets.Utils;
/**
* Presentation provider for the Call Stack view, based on the generic TMF
* presentation provider.
*
* @author Patrick Tasse
*/
public class CallStackPresentationProvider extends TimeGraphPresentationProvider {
/** Number of colors used for call stack events */
public static final int NUM_COLORS = 360;
private final CallStackView fView;
private Integer fAverageCharWidth;
private enum State {
MULTIPLE (new RGB(100, 100, 100)),
EXEC (new RGB(0, 200, 0));
private final RGB rgb;
private State (RGB rgb) {
this.rgb = rgb;
}
}
/**
* Constructor
*
* @param view
* The callstack view that will contain the time events
*/
public CallStackPresentationProvider(CallStackView view) {
fView = view;
}
@Override
public String getStateTypeName(ITimeGraphEntry entry) {
return Messages.CallStackPresentationProvider_Thread;
}
@Override
public StateItem[] getStateTable() {
final float saturation = 0.6f;
final float brightness = 0.6f;
StateItem[] stateTable = new StateItem[NUM_COLORS + 1];
stateTable[0] = new StateItem(State.MULTIPLE.rgb, State.MULTIPLE.toString());
for (int i = 0; i < NUM_COLORS; i++) {
RGB rgb = new RGB(i, saturation, brightness);
stateTable[i + 1] = new StateItem(rgb, State.EXEC.toString());
}
return stateTable;
}
@Override
public int getStateTableIndex(ITimeEvent event) {
if (event instanceof CallStackEvent) {
CallStackEvent callStackEvent = (CallStackEvent) event;
return callStackEvent.getValue() + 1;
} else if (event instanceof NullTimeEvent) {
return INVISIBLE;
}
return State.MULTIPLE.ordinal();
}
@Override
public String getEventName(ITimeEvent event) {
if (event instanceof CallStackEvent) {
CallStackEntry entry = (CallStackEntry) event.getEntry();
ITmfStateSystem ss = entry.getStateSystem();
try {
ITmfStateValue value = ss.querySingleState(event.getTime(), entry.getQuark()).getStateValue();
if (!value.isNull()) {
String address = value.toString();
return fView.getFunctionName(address);
}
} catch (AttributeNotFoundException e) {
Activator.getDefault().logError("Error querying state system", e); //$NON-NLS-1$
} catch (TimeRangeException e) {
Activator.getDefault().logError("Error querying state system", e); //$NON-NLS-1$
} catch (StateSystemDisposedException e) {
/* Ignored */
}
return null;
}
return State.MULTIPLE.toString();
}
@Override
public void postDrawEvent(ITimeEvent event, Rectangle bounds, GC gc) {
if (fAverageCharWidth == null) {
fAverageCharWidth = gc.getFontMetrics().getAverageCharWidth();
}
if (bounds.width <= fAverageCharWidth) {
return;
}
if (!(event instanceof CallStackEvent)) {
return;
}
CallStackEntry entry = (CallStackEntry) event.getEntry();
ITmfStateSystem ss = entry.getStateSystem();
try {
ITmfStateValue value = ss.querySingleState(event.getTime(), entry.getQuark()).getStateValue();
if (!value.isNull()) {
String address = value.toString();
String name = fView.getFunctionName(address);
gc.setForeground(gc.getDevice().getSystemColor(SWT.COLOR_WHITE));
Utils.drawText(gc, name, bounds.x, bounds.y - 2, bounds.width, true, true);
}
} catch (AttributeNotFoundException e) {
Activator.getDefault().logError("Error querying state system", e); //$NON-NLS-1$
} catch (TimeRangeException e) {
Activator.getDefault().logError("Error querying state system", e); //$NON-NLS-1$
} catch (StateSystemDisposedException e) {
/* Ignored */
}
}
}
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