gx_font.h

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/*
 *   
 *
 * Copyright  1990-2007 Sun Microsystems, Inc. All Rights Reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER
 * 
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License version
 * 2 only, as published by the Free Software Foundation.
 * 
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * General Public License version 2 for more details (a copy is
 * included at /legal/license.txt).
 * 
 * You should have received a copy of the GNU General Public License
 * version 2 along with this work; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA
 * 
 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
 * Clara, CA 95054 or visit www.sun.com if you need additional
 * information or have any questions.
 */

#ifndef _GX_FONT_H
#define _GX_FONT_H


/**
 * @defgroup lowui_gx Common Putpixel And Platform Graphics External Interface
 * @ingroup lowui
 */

/**
 * @file
 * @ingroup lowui_gx
 *
 * @brief Porting api for graphics library
 */

#include <kni.h>

#ifdef __cplusplus
extern "C" {
#endif

/**
 * Obtains the ascent, descent and leading info for the font indicated.
 *
 * @param face The face of the font (Defined in <B>Font.java</B>)
 * @param style The style of the font (Defined in <B>Font.java</B>)
 * @param size The size of the font (Defined in <B>Font.java</B>)
 * @param ascent The font's ascent should be returned here.
 * @param descent The font's descent should be returned here.
 * @param leading The font's leading should be returned here.
 */
extern void gx_get_fontinfo(int face, int style, int size,
                            int *ascent, int *descent, int *leading);

/**
 * Gets the advance width for the first n characters in charArray if
 * they were to be drawn in the font indicated by the parameters.
 *
 * <p>
 * <b>Reference:</b>
 * Related Java platform declaration:
 * <pre>
 *     charsWidth(chars ch[])I
 * </pre>
 *
 * @param face The font face to be used (Defined in <B>Font.java</B>)
 * @param style The font style to be used (Defined in
 * <B>Font.java</B>)
 * @param size The font size to be used. (Defined in <B>Font.java</B>)
 * @param charArray The string to be measured
 * @param n The number of character to be measured
 * @return The total advance width in pixels (a non-negative value)
 */
extern int gx_get_charswidth(int face, int style, int size,
                              const jchar *charArray, int n);

#ifdef __cplusplus
}
#endif

#endif /* _GX_FONT_H */