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/*******************************************************************************
* Copyright (c) 2011 Google, Inc.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Google, Inc. - initial API and implementation
*******************************************************************************/
package org.eclipse.wb.internal.core.utils.ui;
import org.eclipse.jface.dialogs.Dialog;
import org.eclipse.swt.graphics.FontMetrics;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.widgets.Control;
/**
* Helper class for converting DLU and char size into pixels.
*
* Based on code from JDT UI.
*
* @author scheglov_ke
*/
public class PixelConverter {
private final FontMetrics fFontMetrics;
////////////////////////////////////////////////////////////////////////////
//
// Constructors
//
////////////////////////////////////////////////////////////////////////////
public PixelConverter(Control control) {
GC gc = new GC(control);
gc.setFont(control.getFont());
fFontMetrics = gc.getFontMetrics();
gc.dispose();
}
////////////////////////////////////////////////////////////////////////////
//
// Conversions
//
////////////////////////////////////////////////////////////////////////////
/**
* see org.eclipse.jface.dialogs.DialogPage#convertHeightInCharsToPixels(int)
*/
public int convertHeightInCharsToPixels(int chars) {
return Dialog.convertHeightInCharsToPixels(fFontMetrics, chars);
}
/**
* see org.eclipse.jface.dialogs.DialogPage#convertHorizontalDLUsToPixels(int)
*/
public int convertHorizontalDLUsToPixels(int dlus) {
return Dialog.convertHorizontalDLUsToPixels(fFontMetrics, dlus);
}
/**
* see org.eclipse.jface.dialogs.DialogPage#convertVerticalDLUsToPixels(int)
*/
public int convertVerticalDLUsToPixels(int dlus) {
return Dialog.convertVerticalDLUsToPixels(fFontMetrics, dlus);
}
/**
* see org.eclipse.jface.dialogs.DialogPage#convertWidthInCharsToPixels(int)
*/
public int convertWidthInCharsToPixels(int chars) {
return Dialog.convertWidthInCharsToPixels(fFontMetrics, chars);
}
}
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