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Diffstat (limited to 'bundles/org.eclipse.swt/Eclipse SWT/gtk/org/eclipse/swt/graphics/Font.java')
-rw-r--r--bundles/org.eclipse.swt/Eclipse SWT/gtk/org/eclipse/swt/graphics/Font.java288
1 files changed, 288 insertions, 0 deletions
diff --git a/bundles/org.eclipse.swt/Eclipse SWT/gtk/org/eclipse/swt/graphics/Font.java b/bundles/org.eclipse.swt/Eclipse SWT/gtk/org/eclipse/swt/graphics/Font.java
new file mode 100644
index 0000000000..3607e38cfa
--- /dev/null
+++ b/bundles/org.eclipse.swt/Eclipse SWT/gtk/org/eclipse/swt/graphics/Font.java
@@ -0,0 +1,288 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2008 IBM Corporation and others.
+ * 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
+ *******************************************************************************/
+package org.eclipse.swt.graphics;
+
+
+import org.eclipse.swt.*;
+import org.eclipse.swt.internal.*;
+import org.eclipse.swt.internal.gtk.*;
+
+/**
+ * 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
+ * @see <a href="http://www.eclipse.org/swt/snippets/#font">Font snippets</a>
+ * @see <a href="http://www.eclipse.org/swt/examples.php">SWT Examples: GraphicsExample, PaintExample</a>
+ * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a>
+ */
+public final class Font extends Resource {
+ /**
+ * 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 /*long*/ handle;
+
+Font(Device device) {
+ super(device);
+}
+
+/**
+ * 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) {
+ super(device);
+ if (fd == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
+ init(fd.getName(), fd.getHeightF(), fd.getStyle(), fd.string);
+ init();
+}
+
+/**
+ * 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) {
+ super(device);
+ 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(fd.getName(), fd.getHeightF(), fd.getStyle(), fd.string);
+ init();
+}
+
+/**
+ * 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) {
+ super(device);
+ init(name, height, style, null);
+ init();
+}
+
+/*public*/ Font(Device device, String name, float height, int style) {
+ super(device);
+ init(name, height, style, null);
+ init();
+}
+
+void destroy() {
+ OS.pango_font_description_free(handle);
+ handle = 0;
+}
+
+/**
+ * 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 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);
+
+ int /*long*/ family = OS.pango_font_description_get_family(handle);
+ int length = OS.strlen(family);
+ byte[] buffer = new byte[length];
+ OS.memmove(buffer, family, length);
+ String name = new String(Converter.mbcsToWcs(null, buffer));
+ float height = (float)OS.pango_font_description_get_size(handle) / OS.PANGO_SCALE;
+ int pangoStyle = OS.pango_font_description_get_style(handle);
+ int pangoWeight = OS.pango_font_description_get_weight(handle);
+ int style = SWT.NORMAL;
+ if (pangoStyle == OS.PANGO_STYLE_ITALIC) style |= SWT.ITALIC;
+ if (pangoStyle == OS.PANGO_STYLE_OBLIQUE) style |= SWT.ROMAN;
+ if (pangoWeight >= OS.PANGO_WEIGHT_BOLD) style |= SWT.BOLD;
+ int /*long*/ fontString = OS.pango_font_description_to_string (handle);
+ length = OS.strlen (fontString);
+ buffer = new byte [length + 1];
+ OS.memmove (buffer, fontString, length);
+ OS.g_free (fontString);
+ FontData data = new FontData(name, height, style);
+ data.string = buffer;
+ return new FontData[]{data};
+}
+
+/**
+ * Invokes platform specific functionality to allocate a new font.
+ * <p>
+ * <b>IMPORTANT:</b> This method is <em>not</em> part of the public
+ * API for <code>Font</code>. 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 called from
+ * application code.
+ * </p>
+ *
+ * @param device the device on which to allocate the color
+ * @param handle the handle for the font
+ *
+ * @private
+ */
+public static Font gtk_new(Device device, int /*long*/ handle) {
+ Font font = new Font(device);
+ font.handle = handle;
+ return font;
+}
+
+/**
+ * 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 (int)/*64*/handle;
+}
+
+void init(String name, float height, int style, byte[] fontString) {
+ if (name == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
+ if (height < 0) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
+ if (fontString != null) {
+ handle = OS.pango_font_description_from_string (fontString);
+ if (handle == 0) SWT.error(SWT.ERROR_NO_HANDLES);
+ } else {
+ handle = OS.pango_font_description_new();
+ if (handle == 0) SWT.error(SWT.ERROR_NO_HANDLES);
+ byte[] buffer = Converter.wcsToMbcs(null, name, true);
+ OS.pango_font_description_set_family(handle, buffer);
+ if (height > 0) {
+ OS.pango_font_description_set_size(handle, (int)(0.5f + height * OS.PANGO_SCALE));
+ }
+ OS.pango_font_description_set_stretch(handle, OS.PANGO_STRETCH_NORMAL);
+ int pangoStyle = OS.PANGO_STYLE_NORMAL;
+ int pangoWeight = OS.PANGO_WEIGHT_NORMAL;
+ if ((style & SWT.ITALIC) != 0) pangoStyle = OS.PANGO_STYLE_ITALIC;
+ if ((style & SWT.ROMAN) != 0) pangoStyle = OS.PANGO_STYLE_OBLIQUE;
+ if ((style & SWT.BOLD) != 0) pangoWeight = OS.PANGO_WEIGHT_BOLD;
+ OS.pango_font_description_set_style(handle, pangoStyle);
+ OS.pango_font_description_set_weight(handle, pangoWeight);
+ }
+}
+
+/**
+ * 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 + "}";
+}
+
+}

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