diff org.eclipse.swt.win32.win32.x86/src/org/eclipse/swt/graphics/Font.d @ 0:6dd524f61e62

add dwt win and basic java stuff
author Frank Benoit <benoit@tionex.de>
date Mon, 02 Mar 2009 14:44:16 +0100
parents
children 6bf2837c50fe
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/org.eclipse.swt.win32.win32.x86/src/org/eclipse/swt/graphics/Font.d	Mon Mar 02 14:44:16 2009 +0100
@@ -0,0 +1,278 @@
+/*******************************************************************************
+ * 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
+ * Port to the D programming language:
+ *     Frank Benoit <benoit@tionex.de>
+ *******************************************************************************/
+module org.eclipse.swt.graphics.Font;
+
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.SWTError;
+import org.eclipse.swt.SWTException;
+import org.eclipse.swt.internal.win32.OS;
+
+import org.eclipse.swt.graphics.Resource;
+import org.eclipse.swt.graphics.FontData;
+import org.eclipse.swt.graphics.Device;
+
+import tango.text.convert.Format;
+import java.lang.all;
+//import tango.stdc.stringz;
+
+/**
+ * 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 : Resource {
+
+    alias Resource.init_ init_;
+    /**
+     * 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 HFONT handle;
+
+/**
+ * Prevents uninitialized instances from being created outside the package.
+ */
+this(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 this(Device device, FontData fd) {
+    super(device);
+    init_(fd);
+    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 this(Device device, FontData[] fds) {
+    super(device);
+    if (fds is null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
+    if (fds.length is 0) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
+    for (int i=0; i<fds.length; i++) {
+        if (fds[i] is null) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
+    }
+    init_(fds[0]);
+    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 this(Device device, String name, int height, int style) {
+    super(device);
+    if (name is null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
+    init_(new FontData (name, height, style));
+    init_();
+}
+
+/*public*/ this(Device device, String name, float height, int style) {
+    super(device);
+    if (name is null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
+    init_(new FontData (name, height, style));
+    init_();
+}
+void destroy() {
+    OS.DeleteObject(handle);
+    handle = 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 int opEquals(Object object) {
+    if (object is this) return true;
+    if ( auto font = cast(Font)object ){
+        return device is font.device && handle is font.handle;
+    }
+    return false;
+}
+
+/**
+ * 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);
+    LOGFONT logFont;
+    OS.GetObject(handle, LOGFONT.sizeof, &logFont);
+    return [ cast(FontData) FontData.win32_new(&logFont, device.computePoints(&logFont, handle))];
+}
+
+/**
+ * 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
+ */
+override public hash_t toHash () {
+    return cast(hash_t)handle;
+}
+
+void init_ (FontData fd) {
+    if (fd is null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
+    LOGFONT* logFont = &fd.data;
+    int lfHeight = logFont.lfHeight;
+    logFont.lfHeight = device.computePixels(fd.height);
+    handle = OS.CreateFontIndirect(logFont);
+    logFont.lfHeight = lfHeight;
+    if (handle is null) SWT.error(SWT.ERROR_NO_HANDLES);
+}
+
+/**
+ * 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
+ */
+override public bool isDisposed() {
+    return handle is null;
+}
+
+/**
+ * Returns a string containing a concise, human-readable
+ * description of the receiver.
+ *
+ * @return a string representation of the receiver
+ */
+override public String toString () {
+    if (isDisposed()) return "Font {*DISPOSED*}";
+    return Format( "Font {{{}}", handle );
+//
+//    LOGFONT logFont;
+//    OS.GetObject(handle, LOGFONT.sizeof, &logFont);
+//    char[] name = .TCHARzToStr( logFont.lfFaceName.ptr, -1 );
+//
+//    return Format( "Font {{{}, {}}", handle, name );
+}
+
+/**
+ * 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
+ * @return a new font object containing the specified device and handle
+ */
+public static Font win32_new(Device device, HFONT handle) {
+    Font font = new Font(device);
+    font.disposeChecking = false;
+    font.handle = handle;
+    return font;
+}
+
+}