Example usage for org.eclipse.swt.graphics FontData setHeight

Introduction

In this page you can find the example usage for org.eclipse.swt.graphics FontData setHeight.

Prototype

public void setHeight(int height) 

Source Link

Document

Sets the height of the receiver.

Usage

From source file:org.eclipse.swt.snippets.Snippet367.java

private static void paintImage2(GC gc, Point size, int f) {
    gc.setBackground(gc.getDevice().getSystemColor(SWT.COLOR_WIDGET_BACKGROUND));
    gc.fillRectangle(0, 0, size.x, size.y);

    // Scale line width, corner roundness, and font size.
    // Caveat: line width expands in all directions, so the origin also has to move.

    gc.setBackground(gc.getDevice().getSystemColor(SWT.COLOR_LIST_SELECTION));
    gc.fillRoundRectangle(f / 2, f / 2, size.x - f, size.y - f, 10 * f, 10 * f);

    gc.setBackground(gc.getDevice().getSystemColor(SWT.COLOR_WIDGET_BACKGROUND));
    gc.setLineWidth(f);//  ww  w  .j a v  a 2s  . co m
    gc.drawRoundRectangle(f / 2, f / 2, size.x - f, size.y - f, 10 * f, 10 * f);
    FontData fontData = gc.getFont().getFontData()[0];
    fontData.setHeight(fontData.getHeight() * f);
    Font font = new Font(gc.getDevice(), fontData);
    try {
        gc.setFont(font);
        gc.drawText(fontData.toString(), 10 * f, 10 * f, true);
    } finally {
        font.dispose();
    }
}

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From source file:SWTUtils.java

/**
 * Create a <code>FontData</code> object which encapsulate
 * the essential data to create a swt font. The data is taken
 * from the provided awt Font.//  w  w  w.ja va 2  s . c o  m
 * <p>Generally speaking, given a font size, the returned swt font
 * will display differently on the screen than the awt one.
 * Because the SWT toolkit use native graphical resources whenever
 * it is possible, this fact is platform dependent. To address
 * this issue, it is possible to enforce the method to return
 * a font with the same size (or at least as close as possible)
 * as the awt one.
 * <p>When the object is no more used, the user must explicitly
 * call the dispose method on the returned font to free the
 * operating system resources (the garbage collector won't do it).
 *
 * @param device The swt device to draw on (display or gc device).
 * @param font The awt font from which to get the data.
 * @param ensureSameSize A boolean used to enforce the same size
 * (in pixels) between the awt font and the newly created swt font.
 * @return a <code>FontData</code> object.
 */
public static FontData toSwtFontData(Device device, java.awt.Font font, boolean ensureSameSize) {
    FontData fontData = new FontData();
    fontData.setName(font.getFamily());
    // SWT and AWT share the same style constants.
    fontData.setStyle(font.getStyle());
    // convert the font size (in pt for awt) to height in pixels for swt
    int height = (int) Math.round(font.getSize() * 72.0 / device.getDPI().y);
    fontData.setHeight(height);
    // hack to ensure the newly created swt fonts will be rendered with the
    // same height as the awt one
    if (ensureSameSize) {
        GC tmpGC = new GC(device);
        Font tmpFont = new Font(device, fontData);
        tmpGC.setFont(tmpFont);
        if (tmpGC.textExtent(Az).x > DUMMY_PANEL.getFontMetrics(font).stringWidth(Az)) {
            while (tmpGC.textExtent(Az).x > DUMMY_PANEL.getFontMetrics(font).stringWidth(Az)) {
                tmpFont.dispose();
                height--;
                fontData.setHeight(height);
                tmpFont = new Font(device, fontData);
                tmpGC.setFont(tmpFont);
            }
        } else if (tmpGC.textExtent(Az).x < DUMMY_PANEL.getFontMetrics(font).stringWidth(Az)) {
            while (tmpGC.textExtent(Az).x < DUMMY_PANEL.getFontMetrics(font).stringWidth(Az)) {
                tmpFont.dispose();
                height++;
                fontData.setHeight(height);
                tmpFont = new Font(device, fontData);
                tmpGC.setFont(tmpFont);
            }
        }
        tmpFont.dispose();
        tmpGC.dispose();
    }
    return fontData;
}

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