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Diffstat (limited to 'bundles/org.eclipse.swt/Eclipse SWT/wpf/org/eclipse/swt/graphics/Device.java')
| -rw-r--r-- | bundles/org.eclipse.swt/Eclipse SWT/wpf/org/eclipse/swt/graphics/Device.java | 650 |
1 files changed, 0 insertions, 650 deletions
diff --git a/bundles/org.eclipse.swt/Eclipse SWT/wpf/org/eclipse/swt/graphics/Device.java b/bundles/org.eclipse.swt/Eclipse SWT/wpf/org/eclipse/swt/graphics/Device.java deleted file mode 100644 index fd43333e24..0000000000 --- a/bundles/org.eclipse.swt/Eclipse SWT/wpf/org/eclipse/swt/graphics/Device.java +++ /dev/null @@ -1,650 +0,0 @@ -/******************************************************************************* - * 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.internal.wpf.*; -import org.eclipse.swt.*; - -/** - * This class is the abstract superclass of all device objects, - * such as the Display device and the Printer device. Devices - * can have a graphics context (GC) created for them, and they - * can be drawn on by sending messages to the associated GC. - * - * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a> - */ -public abstract class Device implements Drawable { - - /* Debugging */ - public static boolean DEBUG; - public static boolean TRACK; - boolean debug = DEBUG; - boolean tracking = DEBUG || TRACK; - Error [] errors; - Object [] objects; - Object trackingLock; - - Color[] colors; - - /* System Font */ - Font systemFont; - - boolean disposed; - - /* - * TEMPORARY CODE. When a graphics object is - * created and the device parameter is null, - * the current Display is used. This presents - * a problem because SWT graphics does not - * reference classes in SWT widgets. The correct - * fix is to remove this feature. Unfortunately, - * too many application programs rely on this - * feature. - */ - protected static Device CurrentDevice; - protected static Runnable DeviceFinder; - static { - try { - Class.forName ("org.eclipse.swt.widgets.Display"); //$NON-NLS-1$ - } catch (ClassNotFoundException e) {} - } - -/* -* TEMPORARY CODE. -*/ -static synchronized Device getDevice () { - if (DeviceFinder != null) DeviceFinder.run(); - Device device = CurrentDevice; - CurrentDevice = null; - return device; -} - -/** - * Constructs a new instance of this class. - * <p> - * You must dispose the device when it is no longer required. - * </p> - * - * @see #create - * @see #init - * - * @since 3.1 - */ -public Device() { - this(null); -} - -/** - * Constructs a new instance of this class. - * <p> - * You must dispose the device when it is no longer required. - * </p> - * - * @param data the DeviceData which describes the receiver - * - * @see #create - * @see #init - * @see DeviceData - */ -public Device(DeviceData data) { - synchronized (Device.class) { - if (data != null) { - debug = data.debug; - tracking = data.tracking; - } - if (tracking) { - errors = new Error [128]; - objects = new Object [128]; - trackingLock = new Object (); - } - create (data); - init (); - } -} - -/** - * Throws an <code>SWTException</code> if the receiver can not - * be accessed by the caller. This may include both checks on - * the state of the receiver and more generally on the entire - * execution context. This method <em>should</em> be called by - * device implementors to enforce the standard SWT invariants. - * <p> - * Currently, it is an error to invoke any method (other than - * <code>isDisposed()</code> and <code>dispose()</code>) on a - * device that has had its <code>dispose()</code> method called. - * </p><p> - * In future releases of SWT, there may be more or fewer error - * checks and exceptions may be thrown for different reasons. - * <p> - * - * @exception SWTException <ul> - * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> - * </ul> - */ -protected void checkDevice () { - if (disposed) SWT.error(SWT.ERROR_DEVICE_DISPOSED); -} - -/** - * Creates the device in the operating system. If the device - * does not have a handle, this method may do nothing depending - * on the device. - * <p> - * This method is called before <code>init</code>. - * </p><p> - * Subclasses are supposed to reimplement this method and not - * call the <code>super</code> implementation. - * </p> - * - * @param data the DeviceData which describes the receiver - * - * @see #init - */ -protected void create (DeviceData data) { -} - -/** - * Destroys the device in the operating system and releases - * the device's handle. If the device does not have a handle, - * this method may do nothing depending on the device. - * <p> - * This method is called after <code>release</code>. - * </p><p> - * Subclasses are supposed to reimplement this method and not - * call the <code>super</code> implementation. - * </p> - * - * @see #dispose - * @see #release - */ -protected void destroy () { -} - -/** - * Disposes of the operating system resources associated with - * the receiver. After this method has been invoked, the receiver - * will answer <code>true</code> when sent the message - * <code>isDisposed()</code>. - * - * @see #release - * @see #destroy - * @see #checkDevice - */ -public void dispose () { - synchronized (Device.class) { - if (isDisposed()) return; - checkDevice (); - release (); - destroy (); - disposed = true; - if (tracking) { - synchronized (trackingLock) { - objects = null; - errors = null; - trackingLock = null; - } - } - } -} - -void dispose_Object (Object object) { - synchronized (trackingLock) { - for (int i=0; i<objects.length; i++) { - if (objects [i] == object) { - objects [i] = null; - errors [i] = null; - return; - } - } - } -} - -/** - * Returns a rectangle describing the receiver's size and location. - * - * @return the bounding rectangle - * - * @exception SWTException <ul> - * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li> - * </ul> - */ -public Rectangle getBounds () { - checkDevice (); - int width = (int) OS.SystemParameters_PrimaryScreenWidth(); - int height = (int) OS.SystemParameters_PrimaryScreenHeight(); - return new Rectangle (0, 0, width, height); -} - -/** - * Returns a <code>DeviceData</code> based on the receiver. - * Modifications made to this <code>DeviceData</code> will not - * affect the receiver. - * - * @return a <code>DeviceData</code> containing the device's data and attributes - * - * @exception SWTException <ul> - * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li> - * </ul> - * - * @see DeviceData - */ -public DeviceData getDeviceData () { - checkDevice(); - DeviceData data = new DeviceData (); - data.debug = debug; - data.tracking = tracking; - if (tracking) { - synchronized (trackingLock) { - int count = 0, length = objects.length; - for (int i=0; i<length; i++) { - if (objects [i] != null) count++; - } - int index = 0; - data.objects = new Object [count]; - data.errors = new Error [count]; - for (int i=0; i<length; i++) { - if (objects [i] != null) { - data.objects [index] = objects [i]; - data.errors [index] = errors [i]; - index++; - } - } - } - } else { - data.objects = new Object [0]; - data.errors = new Error [0]; - } - return data; -} - -/** - * Returns a rectangle which describes the area of the - * receiver which is capable of displaying data. - * - * @return the client area - * - * @exception SWTException <ul> - * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li> - * </ul> - * - * @see #getBounds - */ -public Rectangle getClientArea () { - return getBounds (); -} - -/** - * Returns the bit depth of the screen, which is the number of - * bits it takes to represent the number of unique colors that - * the screen is currently capable of displaying. This number - * will typically be one of 1, 8, 15, 16, 24 or 32. - * - * @return the depth of the screen - * - * @exception SWTException <ul> - * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li> - * </ul> - */ -public int getDepth () { - checkDevice (); - //TODO - implement getDepth - return 32; -} - -/** - * Returns a point whose x coordinate is the horizontal - * dots per inch of the display, and whose y coordinate - * is the vertical dots per inch of the display. - * - * @return the horizontal and vertical DPI - * - * @exception SWTException <ul> - * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li> - * </ul> - */ -public Point getDPI () { - checkDevice (); - //TODO implement getDPI - return new Point(96, 96); -} - -/** - * Returns <code>FontData</code> objects which describe - * the fonts that match the given arguments. If the - * <code>faceName</code> is null, all fonts will be returned. - * - * @param faceName the name of the font to look for, or null - * @param scalable if true only scalable fonts are returned, otherwise only non-scalable fonts are returned. - * @return the matching font data - * - * @exception SWTException <ul> - * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li> - * </ul> - */ -public FontData [] getFontList (String faceName, boolean scalable) { - checkDevice (); - if (!scalable) return new FontData[0]; - int typefaces; - if (faceName != null) { - int length = faceName.length(); - char[] chars = new char[length + 1]; - faceName.getChars(0, length, chars, 0); - int str = OS.gcnew_String(chars); - int fontFamily = OS.gcnew_FontFamily(str); - typefaces = OS.FontFamily_GetTypefaces(fontFamily); - OS.GCHandle_Free(fontFamily); - OS.GCHandle_Free(str); - } else { - typefaces = OS.Fonts_SystemTypefaces(); - } - int count = OS.TypefaceCollection_Count(typefaces); - int index = 0; - FontData[] result = new FontData[count]; - int enumerator = OS.TypefaceCollection_GetEnumerator(typefaces); - while (OS.IEnumerator_MoveNext(enumerator)) { - int typeface = OS.TypefaceCollection_Current(enumerator); - int fontFamily = OS.Typeface_FontFamily(typeface); - int style = OS.Typeface_Style(typeface); - int weight = OS.Typeface_Weight(typeface); - int stretch = OS.Typeface_Stretch(typeface); - int str = OS.FontFamily_Source(fontFamily); - int charArray = OS.String_ToCharArray(str); - char[] chars = new char[OS.String_Length(str)]; - OS.memcpy(chars, charArray, chars.length * 2); - int fontStyle = OS.FontStyles_Normal; - if (OS.Object_Equals(style, OS.FontStyles_Italic)) fontStyle = OS.FontStyles_Italic; - if (OS.Object_Equals(style, OS.FontStyles_Oblique)) fontStyle = OS.FontStyles_Oblique; - FontData data = FontData.wpf_new(new String(chars), fontStyle, - OS.FontWeight_ToOpenTypeWeight(weight), OS.FontStretch_ToOpenTypeStretch(stretch), 0); - OS.GCHandle_Free(charArray); - OS.GCHandle_Free(str); - OS.GCHandle_Free(fontFamily); - OS.GCHandle_Free(style); - OS.GCHandle_Free(weight); - OS.GCHandle_Free(stretch); - OS.GCHandle_Free(typeface); - result[index++] = data; - } - OS.GCHandle_Free(enumerator); - OS.GCHandle_Free(typefaces); - return result; -} - -/** - * Returns the matching standard color for the given - * constant, which should be one of the color constants - * specified in class <code>SWT</code>. Any value other - * than one of the SWT color constants which is passed - * in will result in the color black. This color should - * not be freed because it was allocated by the system, - * not the application. - * - * @param id the color constant - * @return the matching color - * - * @exception SWTException <ul> - * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li> - * </ul> - * - * @see SWT - */ -public Color getSystemColor (int id) { - checkDevice (); - if (0 <= id && id < colors.length) { - return colors[id]; - } - return colors[0]; -} - -/** - * Returns a reasonable font for applications to use. - * On some platforms, this will match the "default font" - * or "system font" if such can be found. This font - * should not be freed because it was allocated by the - * system, not the application. - * <p> - * Typically, applications which want the default look - * should simply not set the font on the widgets they - * create. Widgets are always created with the correct - * default font for the class of user-interface component - * they represent. - * </p> - * - * @return a font - * - * @exception SWTException <ul> - * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li> - * </ul> - */ -public Font getSystemFont () { - checkDevice (); - return systemFont; -} - -/** - * Returns <code>true</code> if the underlying window system prints out - * warning messages on the console, and <code>setWarnings</code> - * had previously been called with <code>true</code>. - * - * @return <code>true</code>if warnings are being handled, and <code>false</code> otherwise - * - * @exception SWTException <ul> - * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li> - * </ul> - */ -public boolean getWarnings () { - checkDevice (); - return false; -} - -/** - * Initializes any internal resources needed by the - * device. - * <p> - * This method is called after <code>create</code>. - * </p><p> - * If subclasses reimplement this method, they must - * call the <code>super</code> implementation. - * </p> - * - * @see #create - */ -protected void init () { - /* Create the standard colors */ - colors = new Color[SWT.COLOR_DARK_GRAY + 1]; - colors[SWT.COLOR_BLACK] = colors[0] = Color.wpf_new(this, OS.Colors_Black()); - colors[SWT.COLOR_DARK_RED] = Color.wpf_new(this, OS.Colors_Maroon ()); - colors[SWT.COLOR_DARK_GREEN] = Color.wpf_new(this, OS.Colors_Green ()); - colors[SWT.COLOR_DARK_YELLOW] = Color.wpf_new(this, OS.Colors_Olive()); - colors[SWT.COLOR_DARK_BLUE] = Color.wpf_new(this, OS.Colors_Navy ()); - colors[SWT.COLOR_DARK_MAGENTA] = Color.wpf_new(this, OS.Colors_Purple()); - colors[SWT.COLOR_DARK_CYAN] = Color.wpf_new(this, OS.Colors_Teal ()); - colors[SWT.COLOR_GRAY] = Color.wpf_new(this, OS.Colors_Silver ()); - colors[SWT.COLOR_DARK_GRAY] = Color.wpf_new(this, OS.Colors_Silver ()); - colors[SWT.COLOR_RED] = Color.wpf_new(this, OS.Colors_Red ()); - colors[SWT.COLOR_GREEN] = Color.wpf_new(this, OS.Colors_Lime ()); - colors[SWT.COLOR_YELLOW] = Color.wpf_new(this, OS.Colors_Yellow ()); - colors[SWT.COLOR_BLUE] = Color.wpf_new(this, OS.Colors_Blue ()); - colors[SWT.COLOR_MAGENTA] = Color.wpf_new(this, OS.Colors_Magenta ()); - colors[SWT.COLOR_CYAN] = Color.wpf_new(this, OS.Colors_Cyan ()); - colors[SWT.COLOR_WHITE] = Color.wpf_new(this, OS.Colors_White ()); - - /* Initialize the system font slot */ - int fontFamily = OS.SystemFonts_MessageFontFamily(); - int style = OS.SystemFonts_MessageFontStyle(); - int weight = OS.SystemFonts_MessageFontWeight(); - double size = OS.SystemFonts_MessageFontSize(); - int typeface = OS.gcnew_Typeface(fontFamily, style, weight, OS.FontStretches_Normal); - OS.GCHandle_Free(fontFamily); - OS.GCHandle_Free(style); - OS.GCHandle_Free(weight); - systemFont = Font.wpf_new(this, typeface, size); -} - -/** - * Invokes platform specific functionality to allocate a new GC handle. - * <p> - * <b>IMPORTANT:</b> This method is <em>not</em> part of the public - * API for <code>Device</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 data the platform specific GC data - * @return the platform specific GC handle - */ -public abstract int internal_new_GC (GCData data); - -/** - * Invokes platform specific functionality to dispose a GC handle. - * <p> - * <b>IMPORTANT:</b> This method is <em>not</em> part of the public - * API for <code>Device</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 hDC the platform specific GC handle - * @param data the platform specific GC data - */ -public abstract void internal_dispose_GC (int hDC, GCData data); - -/** - * Returns <code>true</code> if the device has been disposed, - * and <code>false</code> otherwise. - * <p> - * This method gets the dispose state for the device. - * When a device has been disposed, it is an error to - * invoke any other method using the device. - * - * @return <code>true</code> when the device is disposed and <code>false</code> otherwise - */ -public boolean isDisposed () { - synchronized (Device.class) { - return disposed; - } -} - -/** - * Loads the font specified by a file. The font will be - * present in the list of fonts available to the application. - * - * @param path the font file path - * @return whether the font was successfully loaded - * - * @exception SWTException <ul> - * <li>ERROR_NULL_ARGUMENT - if path is null</li> - * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li> - * </ul> - * - * @see Font - * - * @since 3.3 - */ -public boolean loadFont (String path) { - checkDevice(); - if (path == null) SWT.error (SWT.ERROR_NULL_ARGUMENT); - int length = path.length (); - char[] buffer = new char [length + 1]; - path.getChars (0, length, buffer, 0); - int str = OS.gcnew_String(buffer); - int uri = OS.gcnew_Uri(str, OS.UriKind_RelativeOrAbsolute); - int list = OS.Fonts_GetTypefaces(uri); - int count = OS.TypefaceCollection_Count(list); - OS.GCHandle_Free(list); - OS.GCHandle_Free(uri); - OS.GCHandle_Free(str); - return count != 0; -} - -void new_Object (Object object) { - synchronized (trackingLock) { - for (int i=0; i<objects.length; i++) { - if (objects [i] == null) { - objects [i] = object; - errors [i] = new Error (); - return; - } - } - Object [] newObjects = new Object [objects.length + 128]; - System.arraycopy (objects, 0, newObjects, 0, objects.length); - newObjects [objects.length] = object; - objects = newObjects; - Error [] newErrors = new Error [errors.length + 128]; - System.arraycopy (errors, 0, newErrors, 0, errors.length); - newErrors [errors.length] = new Error (); - errors = newErrors; - } -} - -/** - * Releases any internal resources back to the operating - * system and clears all fields except the device handle. - * <p> - * When a device is destroyed, resources that were acquired - * on behalf of the programmer need to be returned to the - * operating system. For example, if the device allocated a - * font to be used as the system font, this font would be - * freed in <code>release</code>. Also,to assist the garbage - * collector and minimize the amount of memory that is not - * reclaimed when the programmer keeps a reference to a - * disposed device, all fields except the handle are zero'd. - * The handle is needed by <code>destroy</code>. - * </p> - * This method is called before <code>destroy</code>. - * </p><p> - * If subclasses reimplement this method, they must - * call the <code>super</code> implementation. - * </p> - * - * @see #dispose - * @see #destroy - */ -protected void release () { - for (int i = 0; i < colors.length; i++) { - if (colors[i] != null) colors[i].dispose(); - } - colors = null; - if (systemFont != null) systemFont.dispose(); - systemFont = null; - if (tracking) { - synchronized (trackingLock) { - if (TRACK & objects != null) { - for (int i = 0; i < objects.length; i++) { - if (objects[i] != null) { - System.err.println(objects[i]); - errors[i].printStackTrace(); - } - } - } - } - } -} - -/** - * If the underlying window system supports printing warning messages - * to the console, setting warnings to <code>false</code> prevents these - * messages from being printed. If the argument is <code>true</code> then - * message printing is not blocked. - * - * @param warnings <code>true</code>if warnings should be printed, and <code>false</code> otherwise - * - * @exception SWTException <ul> - * <li>ERROR_DEVICE_DISPOSED - if the receiver has been disposed</li> - * </ul> - */ -public void setWarnings (boolean warnings) { - checkDevice (); -} - -} |