示例#1
0
  public static void convertSizeInCharsToPixels(Control control, Point size) {
    FontMetrics fontMetrics = getFontMetrics(control);

    if (fontMetrics == null) {
      return;
    }

    size.x = fontMetrics.getAverageCharWidth() * size.x;
    size.y = fontMetrics.getHeight() * size.y;
  }
示例#2
0
    /*
     * @see org.eclipse.jface.text.source.AnnotationPainter.IDrawingStrategy#draw(org.eclipse.swt.graphics.GC, org.eclipse.swt.custom.StyledText, int, int, org.eclipse.swt.graphics.Color)
     */
    public void draw(
        Annotation annotation, GC gc, StyledText textWidget, int offset, int length, Color color) {
      if (annotation instanceof ProjectionAnnotation) {
        ProjectionAnnotation projectionAnnotation = (ProjectionAnnotation) annotation;
        if (projectionAnnotation.isCollapsed()) {

          if (gc != null) {

            StyledTextContent content = textWidget.getContent();
            int line = content.getLineAtOffset(offset);
            int lineStart = content.getOffsetAtLine(line);
            String text = content.getLine(line);
            int lineLength = text == null ? 0 : text.length();
            int lineEnd = lineStart + lineLength;
            Point p = textWidget.getLocationAtOffset(lineEnd);

            Color c = gc.getForeground();
            gc.setForeground(color);

            FontMetrics metrics = gc.getFontMetrics();

            // baseline: where the dots are drawn
            int baseline = textWidget.getBaseline(offset);
            // descent: number of pixels that the box extends over baseline
            int descent = Math.min(2, textWidget.getLineHeight(offset) - baseline);
            // ascent: so much does the box stand up from baseline
            int ascent = metrics.getAscent();
            // leading: free space from line top to box upper line
            int leading = baseline - ascent;
            // height: height of the box
            int height = ascent + descent;

            int width = metrics.getAverageCharWidth();
            gc.drawRectangle(p.x, p.y + leading, width, height);
            int third = width / 3;
            int dotsVertical = p.y + baseline - 1;
            gc.drawPoint(p.x + third, dotsVertical);
            gc.drawPoint(p.x + width - third, dotsVertical);

            gc.setForeground(c);

          } else {
            textWidget.redrawRange(offset, length, true);
          }
        }
      }
    }
示例#3
0
  /** This method initializes composite1 */
  private void createComposite1() {
    GridLayout gridLayout = new GridLayout();
    gridLayout.numColumns = 2;
    composite1 = new Composite(sShell, SWT.NONE);
    composite1.setLayout(gridLayout);
    createComposite();
    text = new Text(composite1, SWT.BORDER | SWT.SINGLE);
    text.setTextLimit(30);
    int columns = 35;
    GC gc = new GC(text);
    FontMetrics fm = gc.getFontMetrics();
    int width = columns * fm.getAverageCharWidth();
    gc.dispose();
    text.setLayoutData(new GridData(width, SWT.DEFAULT));
    text.addModifyListener(
        new ModifyListener() {
          public void modifyText(ModifyEvent e) {
            String newText = text.getText();
            int radix = 10;
            Matcher numberMatcher = null;
            if (hexRadioButton.getSelection()) {
              numberMatcher = patternHexDigits.matcher(newText);
              radix = 16;
            } else {
              numberMatcher = patternDecDigits.matcher(newText);
            }
            tempResult = -1;
            if (numberMatcher.matches()) tempResult = Long.parseLong(newText, radix);

            if (tempResult >= 0L && tempResult <= limit) {
              showButton.setEnabled(true);
              gotoButton.setEnabled(true);
              label2.setText("");
            } else {
              showButton.setEnabled(false);
              gotoButton.setEnabled(false);
              if ("".equals(newText)) label2.setText("");
              else if (tempResult < 0) label2.setText("Not a number");
              else label2.setText("Location out of range");
            }
          }
        });
    FormData formData = new FormData();
    formData.top = new FormAttachment(label);
    composite1.setLayoutData(formData);
  }
示例#4
0
  @Override
  public void createControl(Composite parent) {
    Composite topLevel = new Composite(parent, SWT.NONE);
    FormLayout layout = new FormLayout();
    layout.marginWidth = layout.marginHeight = 5;
    topLevel.setLayout(layout);

    Label textLabel = new Label(topLevel, SWT.NONE);
    textLabel.setText("Wait Duration (ms): ");

    durationText = new Text(topLevel, SWT.SINGLE | SWT.BORDER);
    durationText.setText("" + xmlWait.getWaitForMilliseconds());
    durationText.addListener(
        SWT.Verify,
        new Listener() {
          public void handleEvent(Event e) {
            String string = e.text;
            char[] chars = string.toCharArray();
            for (char c : chars) {
              if (!('0' <= c && c <= '9')) {
                e.doit = false;
                return;
              }
            }
          }
        });
    durationText.addModifyListener(
        new ModifyListener() {
          public void modifyText(ModifyEvent e) {
            validateInput();
          }
        });

    GC gc = new GC(durationText);
    FontMetrics fm = gc.getFontMetrics();
    int charWidth = fm.getAverageCharWidth();
    int width = durationText.computeSize(charWidth * 8, SWT.DEFAULT).x;
    gc.dispose();
    FormData data = new FormData(width, SWT.DEFAULT);
    durationText.setLayoutData(data);
    data.left = new FormAttachment(textLabel, 5);
    data.top = new FormAttachment(textLabel, 0, SWT.CENTER);

    setControl(topLevel);
    validateInput();
  }
  /**
   * Get the size hints for the receiver. These are used for layout data.
   *
   * @return Point - the preferred x and y coordinates
   */
  public Point getSizeHints() {

    Display display = canvas.getDisplay();

    GC gc = new GC(canvas);
    FontMetrics fm = gc.getFontMetrics();
    int charWidth = fm.getAverageCharWidth();
    int charHeight = fm.getHeight();
    gc.dispose();

    int maxWidth = display.getBounds().width / 2;
    int maxHeight = display.getBounds().height / 6;
    int fontWidth = charWidth * maxCharacterWidth;
    int fontHeight = charHeight * numShowItems;
    if (maxWidth < fontWidth) {
      fontWidth = maxWidth;
    }
    if (maxHeight < fontHeight) {
      fontHeight = maxHeight;
    }
    return new Point(fontWidth, fontHeight);
  }
示例#6
0
 protected int getFontWidth(Button b) {
   GC gc = new GC(b);
   FontMetrics fm = gc.getFontMetrics();
   gc.dispose();
   return fm.getAverageCharWidth();
 }