/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code 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 in the LICENSE file that
* accompanied this code).
*
* 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/**
* Interface between Java Fonts (java.awt.Font) and the underlying
*/
public interface FontManager {
// These constants are used in findFont().
/**
* Register a new font. Please, note that {@code null} is not a valid
* argument, and it's caller's responsibility to ensure that, but to keep
* compatibility, if {@code null} is passed as an argument, {@code false}
* is returned, and no {@link NullPointerException}
* is thrown.
*
* As additional note, an implementation should ensure that this font
* cannot override existing installed fonts.
*
* @param font
* @return {@code true} is the font is successfully registered,
* {@code false} otherwise.
*/
/**
* The client supplies a name and a style.
* The name could be a family name, or a full name.
* A font may exist with the specified style, or it may
* exist only in some other style. For non-native fonts the scaler
* may be able to emulate the required style.
*/
/**
* Creates a Font2D for the specified font file, that is expected
* to be in the specified font format (according to the constants
* in java.awt.Font). The parameter {@code isCopy} is set to true
* when the specified font file is actually a copy of the font data
* and needs to be deleted afterwards. This method is called
* for the Font.createFont() methods.
*
* @param fontFile the file holding the font data
* @param fontFormat the expected font format
* @param isCopy {@code true} if the file is a copy and needs to be
* deleted, {@code false} otherwise
*
* @return the created Font2D instance
*/
throws FontFormatException;
/**
* If usingPerAppContextComposites is true, we are in "applet"
* (eg browser) enviroment and at least one context has selected
* an alternate composite font behaviour.
*/
public boolean usingPerAppContextComposites();
/**
* Creates a derived composite font from the specified font (handle).
*
* @param family the font family of the derived font
* @param style the font style of the derived font
* @param handle the original font (handle)
*
* @return the handle for the derived font
*/
/**
* Indicates a preference for locale-specific fonts in the mapping of
* logical fonts to physical fonts. Calling this method indicates that font
* rendering should primarily use fonts specific to the primary writing
* system (the one indicated by the default encoding and the initial
* default locale). For example, if the primary writing system is
* Japanese, then characters should be rendered using a Japanese font
* if possible, and other fonts should only be used for characters for
* which the Japanese font doesn't have glyphs.
* <p>
* The actual change in font rendering behavior resulting from a call
* to this method is implementation dependent; it may have no effect at
* all, or the requested behavior may already match the default behavior.
* The behavior may differ between font rendering in lightweight
* and peered components. Since calling this method requests a
* different font, clients should expect different metrics, and may need
* to recalculate window sizes and layout. Therefore this method should
* be called before user interface initialisation.
*
* @see #preferProportionalFonts()
* @since 1.5
*/
public void preferLocaleFonts();
/**
* preferLocaleFonts() and preferProportionalFonts() are called to inform
* that the application could be using an alternate set of composite
* fonts, and so the implementation should try to create a CompositeFonts
* with this directive in mind.
*
* @see #preferLocaleFonts()
*/
public void preferProportionalFonts();
}