Examples of org.eclipse.jface.layout.PixelConverter

org.eclipse.jface.layout.PixelConverter
PixelConverter performs various conversions from device-independent units (such as DLUs or characters) to pixels. It can be associated with a control or a font. In the case of a control, the font used by the control at the time the PixelConverter is created is used for the pixel calculations. In the case of a specific font, the supplied font is used for the calculations. The control and/or font must not be disposed at the time the PixelConverter is created. @since 3.5

  }


  private static int getButtonWidthHint(Button button)
  {
    /* button.setFont(JFaceResources.getDialogFont()); */
    PixelConverter converter = new PixelConverter(button);
    int widthHint = converter.convertHorizontalDLUsToPixels(IDialogConstants.BUTTON_WIDTH);
    return Math.max(widthHint, button.computeSize(SWT.DEFAULT, SWT.DEFAULT, true).x);
  }

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  /**
   * Returns a width hint for a button control.
   */
  public static int getButtonWidthHint(Button button) {
    /* button.setFont(JFaceResources.getDialogFont()); */
    PixelConverter converter = new PixelConverter(button);
    int widthHint = converter
        .convertHorizontalDLUsToPixels(IDialogConstants.BUTTON_WIDTH);
    return Math.max(widthHint,
        button.computeSize(SWT.DEFAULT, SWT.DEFAULT, true).x);
  }

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  //
  ////////////////////////////////////////////////////////////////////////////
  public StyleListPage(Composite parent, int style) {
    super(parent, SWT.BORDER | SWT.H_SCROLL | SWT.V_SCROLL);
    {
      m_pixelConverter = new PixelConverter(this);
      m_pixelCharOne = m_pixelConverter.convertWidthInCharsToPixels(1);
    }
    useMouseWheelForVerticalScrolling();
    // configure scrolled
    setAlwaysShowScrollBars(false);

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    button.setLayoutData(gd);
    button.setData(new Integer(index));


    // Set the default button size
    button.setFont(JFaceResources.getDialogFont());
    PixelConverter converter = new PixelConverter(button);
    int widthHint = converter.convertHorizontalDLUsToPixels(IDialogConstants.BUTTON_WIDTH);
    gd.widthHint = Math.max(widthHint, button.computeSize(SWT.DEFAULT, SWT.DEFAULT, true).x);


    return button;
  }

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   * @param button the button
   * @return the width hint for the button
   */
  public static int getButtonWidthHint(Button button) {
    button.setFont(JFaceResources.getDialogFont());
    PixelConverter converter= new PixelConverter(button);
    int widthHint= converter.convertHorizontalDLUsToPixels(IDialogConstants.BUTTON_WIDTH);
    return Math.max(widthHint, button.computeSize(SWT.DEFAULT, SWT.DEFAULT, true).x);
  }

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    fTemplatesTree= new Tree(treeComposite, SWT.H_SCROLL | SWT.V_SCROLL | SWT.MULTI
        | SWT.FULL_SELECTION);
    fTemplatesTree.setHeaderVisible(true);
    fTemplatesTree.setLinesVisible(true);


    PixelConverter pixelConverter= new PixelConverter(fTemplatesTree);


    TreeColumn columnName= new TreeColumn(fTemplatesTree, SWT.NONE);
    columnName.setText(TemplatesMessages.TemplatesPage_column_name);
    int minWidth= fPreferenceStore.getInt(COLUMN_NAME_WIDTH_PREF_ID);
    if (minWidth == 0) {
      minWidth= pixelConverter.convertWidthInCharsToPixels(30);
    }
    columnLayout.setColumnData(columnName, new ColumnPixelData(minWidth, true));
    columnName.addControlListener(new ControlListener() {
      public void controlMoved(ControlEvent e) {
      }


      public void controlResized(ControlEvent e) {
        int nameWidth= ((TreeColumn) e.getSource()).getWidth();
        fPreferenceStore.setValue(COLUMN_NAME_WIDTH_PREF_ID, nameWidth);
      }
    });


    TreeColumn columnDescription= new TreeColumn(fTemplatesTree, SWT.NONE);
    columnDescription.setText(TemplatesMessages.TemplatesPage_column_description);
    minWidth= fPreferenceStore.getInt(COLUMN_DESCRIPTION_WIDTH_PREF_ID);
    if (minWidth == 0) {
      minWidth= pixelConverter.convertWidthInCharsToPixels(45);
    }
    columnLayout.setColumnData(columnDescription, new ColumnPixelData(minWidth, false));
    columnDescription.addControlListener(new ControlListener() {
      public void controlMoved(ControlEvent e) {
      }

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        return panel;
    }


    public static int getButtonWidthHint(Button button) {
        button.setFont(JFaceResources.getDialogFont());
        PixelConverter converter = new PixelConverter(button);
        int widthHint = converter
                .convertHorizontalDLUsToPixels(IDialogConstants.BUTTON_WIDTH);
        return Math.max(widthHint,
                button.computeSize(SWT.DEFAULT, SWT.DEFAULT, true).x);
    }

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     * @param button the button
     * @return the width hint
     */
    public static int getButtonWidthHint(Button button) {
        button.setFont(JFaceResources.getDialogFont());
        PixelConverter converter = new PixelConverter(button);
        int widthHint = converter
                .convertHorizontalDLUsToPixels(IDialogConstants.BUTTON_WIDTH);
        return Math.max(widthHint, button.computeSize(SWT.DEFAULT,
                SWT.DEFAULT, true).x);
    }

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    /*
     * @see DialogField#doFillIntoGrid
     */
    public Control[] doFillIntoGrid(Composite parent, int nColumns) {
        PixelConverter converter = new PixelConverter(parent);


        assertEnoughColumns(nColumns);


        Label label = getLabelControl(parent);
        GridData gd = gridDataForLabel(1);
        gd.verticalAlignment = GridData.BEGINNING;
        label.setLayoutData(gd);


        Control list = getListControl(parent);
        gd = new GridData();
        gd.horizontalAlignment = GridData.FILL;
        gd.grabExcessHorizontalSpace = true;
        gd.verticalAlignment = GridData.FILL;
        gd.grabExcessVerticalSpace = true;
        gd.horizontalSpan = nColumns - 2;
        gd.widthHint = converter.convertWidthInCharsToPixels(50);
        gd.heightHint = converter.convertHeightInCharsToPixels(6);


        list.setLayoutData(gd);


        Composite buttons = getButtonBox(parent);
        gd = new GridData();

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   *            the button
   * @return the width hint
   */
  public static int getButtonWidthHint(Button button) {
    button.setFont(JFaceResources.getDialogFont());
    PixelConverter converter = new PixelConverter(button);
    int widthHint = converter
        .convertHorizontalDLUsToPixels(IDialogConstants.BUTTON_WIDTH);
    return Math.max(widthHint,
        button.computeSize(SWT.DEFAULT, SWT.DEFAULT, true).x);
  }

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