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Code Issues Wiki Activity

Bug 390827 - Trace View enhancement

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Create necessary button.

Signed-off-by: Vladimir Prus <vladimir@codesourcery.com>
This commit is contained in:
Vladimir Prus 2013-12-13 05:37:23 -05:00 • committed by Marc Khouzam
parent 7bbbbcf7a8
commit 99b34b3352
1 changed files with 126 additions and 0 deletions
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126
dsf-gdb/org.eclipse.cdt.dsf.gdb.ui/src/org/eclipse/cdt/dsf/gdb/internal/ui/tracepoints/FlatButton.java Normal file
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/*******************************************************************************
* Copyright (c) 2013 Mentor Graphics and others.
* 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:
* Vladimir Prus (Mentor Graphics) - initial API and implementation
*******************************************************************************/
package org.eclipse.cdt.dsf.gdb.internal.ui.tracepoints;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.MouseAdapter;
import org.eclipse.swt.events.MouseEvent;
import org.eclipse.swt.events.PaintEvent;
import org.eclipse.swt.events.PaintListener;
import org.eclipse.swt.events.SelectionListener;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.Cursor;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.graphics.RGB;
import org.eclipse.swt.graphics.Rectangle;
import org.eclipse.swt.widgets.Canvas;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.TypedListener;
public class FlatButton extends Canvas {
private String fText;
private int fMargin = 4;
private Cursor fHandCursor;
public FlatButton(Composite parent, int flags) {
super(parent, flags);
fHandCursor = getDisplay().getSystemCursor(SWT.CURSOR_HAND);
setCursor(fHandCursor);
addPaintListener(new PaintListener() {
@Override
public void paintControl(PaintEvent e) {
onPaint(e);
}
});
addMouseListener(new MouseAdapter() {
@Override
public void mouseDown(MouseEvent e) {
if (isEnabled()) {
notifyListeners(SWT.Selection, null);
}
}
});
}
public void addSelectionListener (SelectionListener listener) {
checkWidget ();
if (listener == null) SWT.error (SWT.ERROR_NULL_ARGUMENT);
TypedListener typedListener = new TypedListener (listener);
addListener (SWT.Selection,typedListener);
addListener (SWT.DefaultSelection,typedListener);
}
public void setText(String text) {
fText = text;
}
public String getText() {
return fText;
}
public void setMargin(int margin) {
fMargin = margin;
}
@Override
public Point computeSize(int wHint, int hHint, boolean changed) {
return computeSize(wHint, hHint);
}
@Override
public Point computeSize(int wHint, int hHint) {
GC gc = new GC(this);
if (fText == null || fText.isEmpty()) {
Point e = gc.textExtent("A"); //$NON-NLS-1$
return new Point(0, e.y + fMargin*2);
}
Point e = gc.textExtent(fText);
return new Point(e.x + fMargin*2, e.y + fMargin*2);
}
private void onPaint(PaintEvent event) {
GC gc = event.gc;
Rectangle ca = getClientArea();
Color mainColor = gc.getDevice().getSystemColor(SWT.COLOR_LIST_SELECTION);
gc.setBackground(mainColor);
float[] mainHSB = mainColor.getRGB().getHSB();
float h = mainHSB[0];
float s = mainHSB[1];
float b = mainHSB[2];
Color borderColor = new Color(gc.getDevice(), new RGB(h, s, (float)(b*0.7)));
Color shadowColor = new Color(gc.getDevice(), new RGB(h, s, (float)(b*0.5)));
gc.setForeground(borderColor);
gc.drawRectangle(0, 0, ca.width-1, ca.height-1);
gc.setForeground(shadowColor);
gc.drawLine(0, ca.height-1, ca.width-1, ca.height-1);
gc.fillRectangle(1, 1, ca.width-2, ca.height-2);
gc.setForeground(gc.getDevice().getSystemColor(SWT.COLOR_LIST_SELECTION_TEXT));
gc.drawText(fText, fMargin, fMargin, true);
borderColor.dispose();
shadowColor.dispose();
}
}