Skip to main content
summaryrefslogtreecommitdiffstats
blob: 25ee92aa541d48bf47289e6993df0a5b51f091a9 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
/****************************************************************
 * Copyright (c) 2006-2013 IBM Corp.
 * 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:
 *     IBM - initial API and implementation
 *
 ****************************************************************
 */
package org.eclipse.linuxtools.systemtap.graphingapi.ui.charts;

import org.eclipse.jface.preference.IPreferenceStore;
import org.eclipse.linuxtools.internal.systemtap.graphingapi.ui.GraphingAPIUIPlugin;
import org.eclipse.linuxtools.systemtap.graphingapi.core.adapters.IAdapter;
import org.eclipse.linuxtools.systemtap.graphingapi.ui.preferences.GraphingAPIPreferenceConstants;
import org.eclipse.linuxtools.systemtap.structures.listeners.IUpdateListener;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Display;
import org.swtchart.Chart;
import org.swtchart.ITitle;

/**
 * Provides the common members and the framework to build one chart.
 *
 * @author Qi Liang
 */
public abstract class AbstractChartBuilder extends Composite implements IUpdateListener{

	/**
	 * Font name for all titles, labels, and values.
	 */
	protected final static String FONT_NAME = "MS Sans Serif"; //$NON-NLS-1$
	protected int maxItems;
	protected double scale = 1.0;

	/**
	 * Provides data for chart.
	 */
	protected IAdapter adapter = null;
	protected int xseries;
	protected int[] yseries;

	protected static final Color WHITE = Display.getDefault().getSystemColor(SWT.COLOR_WHITE);
	protected static final Color BLACK = Display.getDefault().getSystemColor(SWT.COLOR_BLACK);
	protected static final Color RED = Display.getDefault().getSystemColor(SWT.COLOR_RED);

	protected static final Color[] COLORS = {
												RED,
												Display.getDefault().getSystemColor(SWT.COLOR_GREEN),
												Display.getDefault().getSystemColor(SWT.COLOR_BLUE),
												Display.getDefault().getSystemColor(SWT.COLOR_YELLOW),
												Display.getDefault().getSystemColor(SWT.COLOR_MAGENTA),
												Display.getDefault().getSystemColor(SWT.COLOR_CYAN),
												BLACK,
												new Color(Display.getDefault(), 64, 128, 128),
												new Color(Display.getDefault(), 255, 165, 0),
												new Color(Display.getDefault(), 128, 128, 128),
												};
	/**
	 * Chart instance.
	 */
	protected Chart chart = null;

	/**
	 * Chart title.
	 */
	protected String title = null;

	public abstract void updateDataSet();

	/**
	 * Constructs one chart builder and associate it to one data set.
	 */

	public AbstractChartBuilder(IAdapter adapter, Composite parent, int style, String title) {
		super(parent, style);
		this.adapter = adapter;
		this.title = title;
		this.setLayout(new FillLayout());
		IPreferenceStore store = GraphingAPIUIPlugin.getDefault().getPreferenceStore();
		maxItems = Math.min(store.getInt(GraphingAPIPreferenceConstants.P_VIEWABLE_DATA_ITEMS),
									store.getInt(GraphingAPIPreferenceConstants.P_MAX_DATA_ITEMS));
	}

	/**
	 * Builds one chart.
	 */
	public void build() {
		createChart();
		buildPlot();
		buildLegend();
		buildTitle();
		buildXAxis();
		buildYAxis();
		buildXSeries();
		buildYSeries();
		updateDataSet();
	}

	/**
	 * Creates chart instance.
	 */
	protected void createChart() {
		this.chart = new Chart(this, getStyle());
	}

	/**
	 * Builds plot.
	 */
	protected void buildPlot() {
		this.chart.setBackground(WHITE);
		this.chart.setBackgroundInPlotArea(WHITE);
	}

	/**
	 * Builds X axis.
	 */
	protected void buildXAxis() {}

	/**
	 * Builds Y axis.
	 */
	protected void buildYAxis() {}

	/**
	 * Builds X series.
	 */
	protected void buildXSeries() {}

	/**
	 * Builds Y series.
	 */
	protected void buildYSeries() {}

	/**
	 * Builds legend.
	 *
	 */
	protected void buildLegend() {
		chart.getLegend().setPosition(SWT.RIGHT);
	}

	/**
	 * Builds the chart title.
	 */
	protected void buildTitle() {
		ITitle ctitle = chart.getTitle();
		ctitle.setForeground(BLACK);
		ctitle.setText(this.title);
	}

	/**
	 * Returns the chart instance.
	 *
	 * @return the chart instance
	 */
	public Chart getChart() {
		return chart;
	}

	public void setScale(double scale) {
		this.scale = scale;
		handleUpdateEvent();
	}

	protected Double getDoubleValue(Object o) {
		if (o == null) {
			return null;
		}
		if (o instanceof Integer) {
			return ((Integer)o).doubleValue();
		}
		if (o instanceof Double) {
			return (Double) o;
		}
		try {
			return new Double(o.toString());
		} catch (NumberFormatException e) {
			return null;
		}
	}

	@Override
	public void handleUpdateEvent() {
		if (!chart.isDisposed()) {
			repaint();
		}
	}

	protected void repaint() {
		getDisplay().syncExec(new Runnable() {
			@Override
			public void run() {
				updateDataSet();
            }
		});
	}

}

Back to the top