diff options
Diffstat (limited to 'visualizer/org.eclipse.cdt.visualizer.examples/src/org/eclipse/cdt/visualizer/examples/sourcegraph/SourceGraphControl.java')
| -rw-r--r-- | visualizer/org.eclipse.cdt.visualizer.examples/src/org/eclipse/cdt/visualizer/examples/sourcegraph/SourceGraphControl.java | 121 |
1 files changed, 57 insertions, 64 deletions
diff --git a/visualizer/org.eclipse.cdt.visualizer.examples/src/org/eclipse/cdt/visualizer/examples/sourcegraph/SourceGraphControl.java b/visualizer/org.eclipse.cdt.visualizer.examples/src/org/eclipse/cdt/visualizer/examples/sourcegraph/SourceGraphControl.java index e36c4c8b425..9843aa983df 100644 --- a/visualizer/org.eclipse.cdt.visualizer.examples/src/org/eclipse/cdt/visualizer/examples/sourcegraph/SourceGraphControl.java +++ b/visualizer/org.eclipse.cdt.visualizer.examples/src/org/eclipse/cdt/visualizer/examples/sourcegraph/SourceGraphControl.java @@ -41,37 +41,36 @@ import org.osgi.framework.Bundle; // --------------------------------------------------------------------------- /** Simple control that displays a graph based on a source text selection. */ -public class SourceGraphControl extends BufferedCanvas -{ +public class SourceGraphControl extends BufferedCanvas { // --- constants --- - + /** Margin used in drawing graph and computing control height. */ - public static final int MARGIN = 10; - + public static final int MARGIN = 10; + /** Line height used in drawing graph and computing control height. */ - public static final int LINE_HEIGHT = 20; - + public static final int LINE_HEIGHT = 20; + /** Path for the banner image, relative to plug-in root path */ protected static final String BANNER_FILE = "images/sgv-banner.png"; //$NON-NLS-1$ protected static final int BANNER_HEIGHT = 50; - + // --- members --- - + /** Text we're currently displaying. */ protected String m_sourceText = ""; //$NON-NLS-1$ - + protected GraphicObject m_banner; - + /** Data structure used to hold character stats. */ - class CharStat - implements Comparable<CharStat> - { + class CharStat implements Comparable<CharStat> { public String characters; public int count; + public CharStat(String c) { characters = c; count = 0; } + @Override public int compareTo(CharStat o) { int c1 = count; @@ -79,70 +78,65 @@ public class SourceGraphControl extends BufferedCanvas int cmp = (c1 < c2) ? -1 : (c1 > c2) ? 1 : 0; // we want to sort in descending order, so negate result return -cmp; - }; + }; }; - + /** List of characters we discovered and their occurrences. */ ArrayList<CharStat> m_characters; - - + // --- constructors/destructors --- - + /** Constructor. */ public SourceGraphControl(Composite parent) { super(parent); m_characters = new ArrayList<CharStat>(); m_banner = new GraphicObject(); } - + /** Dispose method. */ @Override public void dispose() { super.dispose(); } - // --- accessors --- - + /** Sets source text to graph. */ - public void setSourceText(String text) - { + public void setSourceText(String text) { processText(text); SourceGraphControl.this.update(); } - // --- text processing methods --- - + /** Processes text into digested display form. */ - public void processText(String text) - { - if (text == null) text = ""; //$NON-NLS-1$ + public void processText(String text) { + if (text == null) + text = ""; //$NON-NLS-1$ m_sourceText = text; // TODO: reuse the array/hashtable and stat objects - - Hashtable<String, CharStat> characters = - new Hashtable<String, CharStat>(); - + + Hashtable<String, CharStat> characters = new Hashtable<String, CharStat>(); + int len = m_sourceText.length(); int fragment_length = 2; if (len >= fragment_length) { - for (int i = 0; i<len-fragment_length+1; ++i) { - String c = m_sourceText.substring(i,i+fragment_length); - + for (int i = 0; i < len - fragment_length + 1; ++i) { + String c = m_sourceText.substring(i, i + fragment_length); + // Don't bother with fragments containing spaces // and non-printing chars. boolean skip = false; - for (int j=0; j<c.length(); ++j) - { + for (int j = 0; j < c.length(); ++j) { if (c.charAt(j) <= 32 || c.charAt(j) > 127) { skip = true; break; } } - if (skip) continue; - + if (skip) + continue; + CharStat cs = characters.get(c); if (cs == null) { cs = new CharStat(c); @@ -151,24 +145,24 @@ public class SourceGraphControl extends BufferedCanvas ++cs.count; } } - + m_characters.clear(); m_characters.addAll(characters.values()); Collections.sort(m_characters); - + characters.clear(); - + Rectangle bounds = getBounds(); int height = MARGIN * 2 + m_characters.size() * LINE_HEIGHT; - + // reserve space for banner at the top height = height + BANNER_HEIGHT; - + bounds.height = height; setBounds(bounds); - + } - + // --- painting methods --- /** Invoked when canvas repaint event is raised. @@ -182,35 +176,35 @@ public class SourceGraphControl extends BufferedCanvas clearCanvas(gc); int margin = MARGIN; - int tw = 90; + int tw = 90; int tw2 = 45; int lh = LINE_HEIGHT; - + int x = margin; - // skip banner space + // skip banner space int y = BANNER_HEIGHT + margin; - + Rectangle area = getClientArea(); - int w = area.width - margin*2 - tw; - + int w = area.width - margin * 2 - tw; + // position and size banner container object m_banner.setBounds(new Rectangle(x - margin, margin, area.width, BANNER_HEIGHT - margin)); - + // draw banner try { m_banner.drawImage(gc, getAbsFilePath(BANNER_FILE), GraphicObject.ImageSizeAndPosition.MAXSIZE); } catch (FileNotFoundException e) { e.printStackTrace(); } - + int maxcount = 0; - for (CharStat cs : m_characters) - { + for (CharStat cs : m_characters) { // We're sorted in descending order, so first element // that we draw will always have the largest count. - if (maxcount == 0) maxcount = cs.count; - - gc.drawText("[" + cs.characters + "]", x, y); //$NON-NLS-1$ //$NON-NLS-2$ + if (maxcount == 0) + maxcount = cs.count; + + gc.drawText("[" + cs.characters + "]", x, y); //$NON-NLS-1$ //$NON-NLS-2$ gc.drawText("(" + cs.count + ")", x + tw2, y); //$NON-NLS-1$ //$NON-NLS-2$ double proportion = cs.count * 1.0 / maxcount; @@ -220,16 +214,15 @@ public class SourceGraphControl extends BufferedCanvas gc.setBackground(Colors.GREEN); else if (proportion > .40) gc.setBackground(Colors.YELLOW); - else + else gc.setBackground(Colors.RED); - gc.fillRectangle(x + tw, y, bw, lh-5); + gc.fillRectangle(x + tw, y, bw, lh - 5); gc.setBackground(oldb); y += lh; } } - // --- update methods --- /** @@ -246,7 +239,7 @@ public class SourceGraphControl extends BufferedCanvas public void resized(Rectangle bounds) { refresh(); } - + /** Get the absolute path of a file, from the path relative to plugin root. */ private String getAbsFilePath(String relPath) { Bundle bundle = Platform.getBundle(VisualizerExamplesPlugin.PLUGIN_ID); |