Example usage for java.awt Component getFontMetrics

Introduction

In this page you can find the example usage for java.awt Component getFontMetrics.

Prototype

public FontMetrics getFontMetrics(Font font) 

Source Link

Document

Gets the font metrics for the specified font.

Usage

From source file:Main.java

/**
 * Calculates the average character width for the given {@link Component}.
 * This can be useful as a scaling factor when designing for font scaling.
 *
 * @param component the {@link Component} for which to calculate the
 *        average character width./*from  www.j a  v  a  2  s . c om*/
 * @return The average width in pixels
 */
public static float getComponentAverageCharacterWidth(Component component) {
    FontMetrics metrics = component.getFontMetrics(component.getFont());
    int i = 0;
    float avgWidth = 0;
    for (int width : metrics.getWidths()) {
        avgWidth += width;
        i++;
    }
    return avgWidth / i;
}

---

From source file:Main.java

/**
 * Returns the height of the given component.
 *
 * @param c the component where the text is contained
 * @return the height of the text/*from  ww w  . jav  a 2  s .c  o  m*/
 */
public static int getStringHeight(Component c) {
    // get metrics from the graphics
    FontMetrics metrics = c.getFontMetrics(c.getFont());
    // get the height of a line of text in this font and render context
    int hgt = metrics.getHeight();
    // calculate the height of a box to hold the text with some padding.
    return hgt + 2;
}

---

From source file:Main.java

/**
 * Returns the size of the given text computed towards to the given
 * component./*from  w  w w  .  j a v  a 2  s  .  c  o m*/
 *
 * @param c the component where the text is contained
 * @param text the text to measure
 * @return the dimensions of the text
 */
public static Dimension getStringSize(Component c, String text) {
    // get metrics from the graphics
    FontMetrics metrics = c.getFontMetrics(c.getFont());
    // get the height of a line of text in this font and render context
    int hgt = metrics.getHeight();
    // get the advance of my text in this font and render context
    int adv = metrics.stringWidth(text);
    // calculate the size of a box to hold the text with some padding.
    return new Dimension(adv + 2, hgt + 2);
}

---

From source file:Main.java

public static FontMetrics getFontMetrics(Component component) {
    Font font = component.getFont();
    if (font == null) {
        font = Font.getFont(Font.DIALOG);
    }//w w w . j  a va2s .  c o m
    return component.getFontMetrics(font);
}

---

From source file:edu.ku.brc.specify.tasks.subpane.wb.WorkbenchPaneSS.java

/**
 * Adjust all the column width for the data in the column, this may be handles with JDK 1.6 (6.)
 * @param tableArg the table that should have it's columns adjusted
 *//*from w ww  . j  a  v  a2 s  . c o  m*/
private void initColumnSizes(final JTable tableArg, final JButton theSaveBtn) throws Exception {
    TableModel tblModel = tableArg.getModel();
    TableColumn column = null;
    Component comp = null;
    int headerWidth = 0;
    int cellWidth = 0;

    Element uploadDefs = null;
    if (WorkbenchTask.isCustomizedSchema()) {
        uploadDefs = XMLHelper.readFileToDOM4J(
                new File(UIRegistry.getAppDataDir() + File.separator + "specify_workbench_upload_def.xml"));
    } else {
        uploadDefs = XMLHelper.readDOMFromConfigDir("specify_workbench_upload_def.xml");
    }

    //UIRegistry.getInstance().hookUpUndoableEditListener(cellEditor);

    Vector<WorkbenchTemplateMappingItem> wbtmis = new Vector<WorkbenchTemplateMappingItem>();
    wbtmis.addAll(workbench.getWorkbenchTemplate().getWorkbenchTemplateMappingItems());
    Collections.sort(wbtmis);

    DBTableIdMgr databaseSchema = WorkbenchTask.getDatabaseSchema();

    columnMaxWidths = new Integer[tableArg.getColumnCount()];
    for (int i = 0; i < wbtmis.size() /*tableArg.getColumnCount()*/; i++) {
        TableCellRenderer headerRenderer = tableArg.getColumnModel().getColumn(i).getHeaderRenderer();
        WorkbenchTemplateMappingItem wbtmi = wbtmis.elementAt(i);

        // Now go retrieve the data length
        int fieldWidth = WorkbenchDataItem.getMaxWBCellLength();
        DBTableInfo ti = databaseSchema.getInfoById(wbtmi.getSrcTableId());
        if (ti != null) {
            DBFieldInfo fi = ti.getFieldByName(wbtmi.getFieldName());
            if (fi != null) {
                wbtmi.setFieldInfo(fi);
                //System.out.println(fi.getName()+"  "+fi.getLength()+"  "+fi.getType());
                if (RecordTypeCodeBuilder.getTypeCode(fi) == null && fi.getLength() > 0) {
                    fieldWidth = Math.min(fi.getLength(), WorkbenchDataItem.getMaxWBCellLength());
                }
            } else {
                log.error("Can't find field with name [" + wbtmi.getFieldName() + "]");
            }
        } else {
            log.error("Can't find table [" + wbtmi.getSrcTableId() + "]");
        }
        columnMaxWidths[i] = new Integer(fieldWidth);
        GridCellEditor cellEditor = getCellEditor(wbtmi, fieldWidth, theSaveBtn, uploadDefs);
        column = tableArg.getColumnModel().getColumn(i);

        comp = headerRenderer.getTableCellRendererComponent(null, column.getHeaderValue(), false, false, 0, 0);
        headerWidth = comp.getPreferredSize().width;

        comp = tableArg.getDefaultRenderer(tblModel.getColumnClass(i)).getTableCellRendererComponent(tableArg,
                tblModel.getValueAt(0, i), false, false, 0, i);

        cellWidth = comp.getPreferredSize().width;

        //comp.setBackground(Color.WHITE);

        int maxWidth = headerWidth + 10;
        TableModel m = tableArg.getModel();
        FontMetrics fm = comp.getFontMetrics(comp.getFont());
        for (int row = 0; row < tableArg.getModel().getRowCount(); row++) {
            String text = m.getValueAt(row, i).toString();
            maxWidth = Math.max(maxWidth, fm.stringWidth(text) + 10);
            //log.debug(i+" "+maxWidth);
        }

        //XXX: Before Swing 1.1 Beta 2, use setMinWidth instead.
        //log.debug(Math.max(maxWidth, cellWidth));
        //log.debug(Math.min(Math.max(maxWidth, cellWidth), 400));
        column.setPreferredWidth(Math.min(Math.max(maxWidth, cellWidth), 400));

        column.setCellEditor(cellEditor);
    }
    //tableArg.setCellEditor(cellEditor);
}

---