Example usage for org.eclipse.swt.custom StyledText getLineHeight

Introduction

In this page you can find the example usage for org.eclipse.swt.custom StyledText getLineHeight.

Prototype

public int getLineHeight() 

Source Link

Document

Returns the line height.

Usage

From source file:TextAroundBox.java

public static void main(String[] args) {
    final Display display = new Display();
    final Color RED = display.getSystemColor(SWT.COLOR_RED);
    Shell shell = new Shell(display);
    shell.setBounds(10, 10, 250, 250);/*from w  w  w .  j  a  v  a2s . c  om*/
    final StyledText text = new StyledText(shell, SWT.NONE);
    text.setBounds(10, 10, 200, 200);
    text.addListener(SWT.Paint, new Listener() {
        public void handleEvent(Event event) {
            String contents = text.getText();
            int stringWidth = event.gc.stringExtent(SEARCH_STRING).x;
            int lineHeight = text.getLineHeight();
            event.gc.setForeground(RED);
            int index = contents.indexOf(SEARCH_STRING);
            while (index != -1) {
                Point topLeft = text.getLocationAtOffset(index);
                event.gc.drawRectangle(topLeft.x - 1, topLeft.y, stringWidth + 1, lineHeight - 1);
                index = contents.indexOf(SEARCH_STRING, index + 1);
            }
        }
    });
    text.setText("This demonstrates drawing a box\naround every occurrence of the word\nbox in the StyledText");
    shell.open();
    while (!shell.isDisposed()) {
        if (!display.readAndDispatch())
            display.sleep();
    }
    display.dispose();
}

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