--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/javauis/eswt_qt/org.eclipse.swt/Eclipse SWT/qt/org/eclipse/swt/graphics/Font.java Mon May 03 12:27:20 2010 +0300
@@ -0,0 +1,364 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2007 IBM Corporation and others.
+ * Portion Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies).
+ * 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:
+ * IBM Corporation - initial API and implementation
+ * Nokia Corporation - Qt implementation
+ *******************************************************************************/
+package org.eclipse.swt.graphics;
+
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.SWTError;
+import org.eclipse.swt.SWTException;
+import org.eclipse.swt.internal.qt.OS;
+import org.eclipse.swt.internal.qt.QtSupplementaryFontData;
+
+/**
+ * Instances of this class manage operating system resources that define how
+ * text looks when it is displayed. Fonts may be constructed by providing a
+ * device and either name, size and style information or a <code>FontData</code>
+ * object which encapsulates this data.
+ * <p>
+ * Application code must explicitly invoke the <code>Font.dispose()</code>
+ * method to release the operating system resources managed by each instance
+ * when those instances are no longer required.
+ * </p>
+ *
+ * @see FontData
+ */
+public final class Font extends Object {
+ /**
+ * the handle to the OS font resource (Warning: This field is platform
+ * dependent)
+ * <p>
+ * <b>IMPORTANT:</b> This field is <em>not</em> part of the SWT public API.
+ * It is marked public only so that it can be shared within the packages
+ * provided by SWT. It is not available on all platforms and should never be
+ * accessed from application code.
+ * </p>
+ */
+ public int handle;
+
+ Device device;
+ boolean extraFontStyle;
+ String xlfd;
+
+ /**
+ * Prevents uninitialized instances from being created outside the package.
+ */
+ Font() {
+ }
+
+ /**
+ * Constructs a new font given a device and font data which describes the
+ * desired font's appearance.
+ * <p>
+ * You must dispose the font when it is no longer required.
+ * </p>
+ *
+ * @param device
+ * the device to create the font on
+ * @param fd
+ * the FontData that describes the desired font (must not be
+ * null)
+ *
+ * @exception IllegalArgumentException
+ * <ul>
+ * <li>ERROR_NULL_ARGUMENT - if device is null and there is
+ * no current device</li>
+ * <li>ERROR_NULL_ARGUMENT - if the fd argument is null</li>
+ * </ul>
+ * @exception SWTError
+ * <ul>
+ * <li>ERROR_NO_HANDLES - if a font could not be created from
+ * the given font data</li>
+ * </ul>
+ */
+ public Font(Device device, FontData fd) {
+ if (fd == null)
+ SWT.error(SWT.ERROR_NULL_ARGUMENT);
+ init(device, fd.getName(), fd.getHeight(), fd.getStyle());
+ initExtraFontData(fd);
+ }
+
+
+
+ /**
+ * Constructs a new font given a device and an array of font data which
+ * describes the desired font's appearance.
+ * <p>
+ * You must dispose the font when it is no longer required.
+ * </p>
+ *
+ * @param device
+ * the device to create the font on
+ * @param fds
+ * the array of FontData that describes the desired font (must
+ * not be null)
+ *
+ * @exception IllegalArgumentException
+ * <ul>
+ * <li>ERROR_NULL_ARGUMENT - if device is null and there is
+ * no current device</li>
+ * <li>ERROR_NULL_ARGUMENT - if the fds argument is null</li>
+ * <li>ERROR_INVALID_ARGUMENT - if the length of fds is zero</li>
+ * <li>ERROR_NULL_ARGUMENT - if any fd in the array is null</li>
+ * </ul>
+ * @exception SWTError
+ * <ul>
+ * <li>ERROR_NO_HANDLES - if a font could not be created from
+ * the given font data</li>
+ * </ul>
+ *
+ * @since 2.1
+ */
+ public Font(Device device, FontData[] fds) {
+ if (fds == null)
+ SWT.error(SWT.ERROR_NULL_ARGUMENT);
+ if (fds.length == 0)
+ SWT.error(SWT.ERROR_INVALID_ARGUMENT);
+ for (int i = 0; i < fds.length; i++) {
+ if (fds[i] == null)
+ SWT.error(SWT.ERROR_INVALID_ARGUMENT);
+ }
+ FontData fd = fds[0];
+ init(device, fd.getName(), fd.getHeight(), fd.getStyle());
+ initExtraFontData(fd);
+ }
+
+ /**
+ * Constructs a new font given a device, a font name, the height of the
+ * desired font in points, and a font style.
+ * <p>
+ * You must dispose the font when it is no longer required.
+ * </p>
+ *
+ * @param device
+ * the device to create the font on
+ * @param name
+ * the name of the font (must not be null)
+ * @param height
+ * the font height in points
+ * @param style
+ * a bit or combination of NORMAL, BOLD, ITALIC
+ *
+ * @exception IllegalArgumentException
+ * <ul>
+ * <li>ERROR_NULL_ARGUMENT - if device is null and there is
+ * no current device</li>
+ * <li>ERROR_NULL_ARGUMENT - if the name argument is null</li>
+ * <li>ERROR_INVALID_ARGUMENT - if the height is negative</li>
+ * </ul>
+ * @exception SWTError
+ * <ul>
+ * <li>ERROR_NO_HANDLES - if a font could not be created from
+ * the given arguments</li>
+ * </ul>
+ */
+ public Font(Device device, String name, int height, int style) {
+ init(device, name, height, style);
+ }
+
+ public void dispose() {
+ if (device == null)
+ return;
+ if (device.isDisposed())
+ return;
+ if(!OS.SwtFontCache_isCached(handle)) {
+ OS.QFont_delete(handle);
+ }
+ handle = 0;
+ if (device.tracking)
+ device.dispose_Object(this);
+ device = null;
+ }
+
+ /**
+ * Compares the argument to the receiver, and returns true if they represent
+ * the <em>same</em> object using a class specific comparison.
+ *
+ * @param object
+ * the object to compare with this object
+ * @return <code>true</code> if the object is the same as this object and
+ * <code>false</code> otherwise
+ *
+ * @see #hashCode
+ */
+ public boolean equals(Object object) {
+ if (object == this)
+ return true;
+ if (!(object instanceof Font))
+ return false;
+ return OS.QFont_swt_equals(handle,((Font) object).handle);
+ }
+
+ /**
+ * Returns an array of <code>FontData</code>s representing the receiver. On
+ * Windows, only one FontData will be returned per font. On X however, a
+ * <code>Font</code> object <em>may</em> be composed of multiple X fonts. To
+ * support this case, we return an array of font data objects.
+ *
+ * @return an array of font data objects describing the receiver
+ *
+ * @exception SWTException
+ * <ul>
+ * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been
+ * disposed</li>
+ * </ul>
+ */
+ public FontData[] getFontData() {
+ if (isDisposed())
+ SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
+
+ String family = OS.QFont_family(handle);
+ int pointSize = OS.QFont_pointSize(handle);
+ int weight = OS.QFont_weight(handle);
+ boolean italic = OS.QFont_italic(handle);
+
+ int style = SWT.NORMAL;
+ if (weight > OS.QT_FONTNORMAL)
+ style |= SWT.BOLD;
+ if (italic == true)
+ style |= SWT.ITALIC;
+ FontData data = new FontData(family, pointSize, style);
+ if (xlfd != null) {
+ data.xlfd = xlfd;
+ } else if (extraFontStyle) {
+ data.extraFontData = new QtSupplementaryFontData();
+ QtSupplementaryFontData extraData = data.extraFontData;
+ extraData.underline = OS.QFont_underline(handle) == true ? 1 : 0;
+ extraData.overline = OS.QFont_overline(handle) == true ? 1 : 0;
+ extraData.strikeOut = OS.QFont_strikeOut(handle) == true ? 1 : 0;
+ extraData.stretch = OS.QFont_stretch(handle);
+ extraData.fixedPitch = OS.QFont_fixedPitch(handle) == true ? 1 : 0;
+ extraData.style = OS.QFont_style(handle);
+ extraData.weight = OS.QFont_weight(handle);
+ extraData.styleStrategy = OS.QFont_styleStrategy(handle);
+ }
+ return new FontData[] { data };
+ }
+
+ /**
+ * Returns an integer hash code for the receiver. Any two objects that
+ * return <code>true</code> when passed to <code>equals</code> must return
+ * the same value for this method.
+ *
+ * @return the receiver's hash
+ *
+ * @see #equals
+ */
+ public int hashCode() {
+ return handle;
+ }
+
+ void init(Device device, String name, int height, int style) {
+ extraFontStyle = false;
+ xlfd = null;
+ if (device == null)
+ device = Device.getDevice();
+ if (device == null)
+ SWT.error(SWT.ERROR_NULL_ARGUMENT);
+ this.device = device;
+ if (name == null)
+ SWT.error(SWT.ERROR_NULL_ARGUMENT);
+ if (height < 0)
+ SWT.error(SWT.ERROR_INVALID_ARGUMENT);
+
+ // Keep this after dealing with all exceptions!
+ if (device.tracking)
+ device.new_Object(this);
+
+ boolean italic = (style & SWT.ITALIC) != 0;
+ int weight = OS.QT_FONTNORMAL;
+ if ((style & SWT.BOLD) != 0) {
+ weight = OS.QT_FONTBOLD;
+ }
+ handle = OS.QFont_new(name, height, weight, italic);
+ }
+
+ void initExtraFontData(FontData fd) {
+ if (fd.xlfd != null) {
+ OS.QFont_setRawName(handle, fd.xlfd);
+ xlfd = fd.xlfd;
+ } else if (fd.extraFontData != null) {
+ QtSupplementaryFontData extraData = fd.extraFontData;
+ if (extraData.underline > -1) {
+ OS.QFont_setUnderline(handle, extraData.underline > 0 ? true
+ : false);
+ }
+ if (extraData.overline > -1) {
+ OS.QFont_setOverline(handle, extraData.overline > 0 ? true
+ : false);
+ }
+ if (extraData.strikeOut > -1) {
+ OS.QFont_setStrikeOut(handle, extraData.strikeOut > 0 ? true
+ : false);
+ }
+ if (extraData.stretch > -1) {
+ OS.QFont_setStretch(handle, extraData.stretch);
+ }
+ if (extraData.fixedPitch > -1) {
+ OS.QFont_setFixedPitch(handle, extraData.fixedPitch > 0 ? true
+ : false);
+ }
+ if (extraData.style > -1) {
+ OS.QFont_setStyle(handle, extraData.style);
+ }
+ if (extraData.weight > -1) {
+ OS.QFont_setWeight(handle, extraData.weight);
+ }
+ if (extraData.styleStrategy > -1) {
+ OS.QFont_setStyleStrategy(handle, extraData.styleStrategy);
+ }
+ extraFontStyle = true;
+ }
+ }
+
+ /**
+ * Returns <code>true</code> if the font has been disposed, and
+ * <code>false</code> otherwise.
+ * <p>
+ * This method gets the dispose state for the font. When a font has been
+ * disposed, it is an error to invoke any other method using the font.
+ *
+ * @return <code>true</code> when the font is disposed and
+ * <code>false</code> otherwise
+ */
+ public boolean isDisposed() {
+ return handle == 0;
+ }
+
+ /**
+ * Returns a string containing a concise, human-readable description of the
+ * receiver.
+ *
+ * @return a string representation of the receiver
+ */
+ public String toString() {
+ if (isDisposed())
+ return "Font {*DISPOSED*}";
+ return "Font {" + handle + "}";
+ }
+
+ /*
+ * Invokes platform specific functionality to allocate a new font.
+ */
+ static Font qt_new(Device device, int handle) {
+ if (handle <= 0)
+ return null;
+ if (device == null)
+ device = Device.getDevice();
+ if (device == null)
+ SWT.error(SWT.ERROR_NULL_ARGUMENT);
+ Font font = new Font();
+ font.handle = handle;
+ font.device = device;
+ return font;
+ }
+
+}