| package org.eclipse.swt.widgets; |
| |
| /* |
| * Copyright (c) 2000, 2002 IBM Corp. All rights reserved. |
| * This file is made available under the terms of the Common Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/cpl-v10.html |
| */ |
| |
| import org.eclipse.swt.*; |
| import org.eclipse.swt.internal.*; |
| import org.eclipse.swt.internal.gtk.*; |
| import org.eclipse.swt.graphics.*; |
| |
| /**
|
| * Instances of this class are responsible for managing the
|
| * connection between SWT and the underlying operating
|
| * system. Their most important function is to implement
|
| * the SWT event loop in terms of the platform event model.
|
| * They also provide various methods for accessing information
|
| * about the operating system, and have overall control over
|
| * the operating system resources which SWT allocates.
|
| * <p>
|
| * Applications which are built with SWT will <em>almost always</em>
|
| * require only a single display. In particular, some platforms
|
| * which SWT supports will not allow more than one <em>active</em>
|
| * display. In other words, some platforms do not support
|
| * creating a new display if one already exists that has not been
|
| * sent the <code>dispose()</code> message.
|
| * <p>
|
| * In SWT, the thread which creates a <code>Display</code>
|
| * instance is distinguished as the <em>user-interface thread</em>
|
| * for that display.
|
| * </p>
|
| * The user-interface thread for a particular display has the
|
| * following special attributes:
|
| * <ul>
|
| * <li>
|
| * The event loop for that display must be run from the thread.
|
| * </li>
|
| * <li>
|
| * Some SWT API methods (notably, most of the public methods in
|
| * <code>Widget</code> and its subclasses), may only be called
|
| * from the thread. (To support multi-threaded user-interface
|
| * applications, class <code>Display</code> provides inter-thread
|
| * communication methods which allow threads other than the
|
| * user-interface thread to request that it perform operations
|
| * on their behalf.)
|
| * </li>
|
| * <li>
|
| * The thread is not allowed to construct other
|
| * <code>Display</code>s until that display has been disposed.
|
| * (Note that, this is in addition to the restriction mentioned
|
| * above concerning platform support for multiple displays. Thus,
|
| * the only way to have multiple simultaneously active displays,
|
| * even on platforms which support it, is to have multiple threads.)
|
| * </li>
|
| * </ul>
|
| * Enforcing these attributes allows SWT to be implemented directly
|
| * on the underlying operating system's event model. This has
|
| * numerous benefits including smaller footprint, better use of
|
| * resources, safer memory management, clearer program logic,
|
| * better performance, and fewer overall operating system threads
|
| * required. The down side however, is that care must be taken
|
| * (only) when constructing multi-threaded applications to use the
|
| * inter-thread communication mechanisms which this class provides
|
| * when required.
|
| * </p><p>
|
| * All SWT API methods which may only be called from the user-interface
|
| * thread are distinguished in their documentation by indicating that
|
| * they throw the "<code>ERROR_THREAD_INVALID_ACCESS</code>"
|
| * SWT exception.
|
| * </p>
|
| * <dl>
|
| * <dt><b>Styles:</b></dt>
|
| * <dd>(none)</dd>
|
| * <dt><b>Events:</b></dt>
|
| * <dd>Close, Dispose</dd>
|
| * </dl>
|
| * <p>
|
| * IMPORTANT: This class is <em>not</em> intended to be subclassed.
|
| * </p>
|
| * @see #syncExec
|
| * @see #asyncExec
|
| * @see #wake
|
| * @see #readAndDispatch
|
| * @see #sleep
|
| * @see #dispose
|
| */ |
| public class Display extends Device { |
| |
| /* Events Dispatching and Callback */ |
| Event [] eventQueue; |
| int windowProc2, windowProc3, windowProc4, windowProc5, keyProc, selectionIterProc, toggleProc; |
| Callback windowCallback2, windowCallback3, windowCallback4, windowCallback5, keyCallback, selectionIterCallback, toggleCallback; |
| EventTable eventTable; |
| |
| /* Sync/Async Widget Communication */ |
| Synchronizer synchronizer = new Synchronizer (this); |
| int messagesSize; |
| RunnableLock [] messages; |
| Object messageLock = new Object (); |
| Thread thread = Thread.currentThread (); |
| |
| /* Display Shutdown */ |
| Runnable [] disposeList; |
| |
| /* Timers */ |
| int [] timerIds; |
| Runnable [] timerList; |
| Callback timerCallback; |
| int timerProc; |
| Callback windowTimerCallback; |
| int windowTimerProc; |
| |
| /* Caret */ |
| Caret currentCaret; |
| Callback caretCallback; |
| int caretId, caretProc; |
| |
| /* Mouse hover */ |
| int mouseHoverId, mouseHoverHandle, mouseHoverProc; |
| Callback mouseHoverCallback; |
| |
| /* Drag Detect */ |
| int dragStartX,dragStartY; |
| boolean dragging; |
| |
| /* Fonts */ |
| int defaultFont; |
| |
| /* Colors */ |
| GdkColor COLOR_WIDGET_DARK_SHADOW, COLOR_WIDGET_NORMAL_SHADOW, COLOR_WIDGET_LIGHT_SHADOW; |
| GdkColor COLOR_WIDGET_HIGHLIGHT_SHADOW, COLOR_WIDGET_BACKGROUND, COLOR_WIDGET_FOREGROUND, COLOR_WIDGET_BORDER; |
| GdkColor COLOR_LIST_FOREGROUND, COLOR_LIST_BACKGROUND, COLOR_LIST_SELECTION, COLOR_LIST_SELECTION_TEXT; |
| GdkColor COLOR_TEXT_FOREGROUND, COLOR_TEXT_BACKGROUND, COLOR_INFO_BACKGROUND, COLOR_INFO_FOREGROUND; |
| GdkColor COLOR_TITLE_FOREGROUND, COLOR_TITLE_BACKGROUND, COLOR_TITLE_BACKGROUND_GRADIENT; |
| GdkColor COLOR_TITLE_INACTIVE_FOREGROUND, COLOR_TITLE_INACTIVE_BACKGROUND, COLOR_TITLE_INACTIVE_BACKGROUND_GRADIENT; |
| |
| /* Key Mappings */ |
| static final int [] [] KeyTable = { |
| |
| /* Keyboard and Mouse Masks */ |
| {OS.GDK_Alt_L, SWT.ALT}, |
| {OS.GDK_Alt_R, SWT.ALT}, |
| {OS.GDK_Shift_L, SWT.SHIFT}, |
| {OS.GDK_Shift_R, SWT.SHIFT}, |
| {OS.GDK_Control_L, SWT.CONTROL}, |
| {OS.GDK_Control_R, SWT.CONTROL}, |
| |
| /* Non-Numeric Keypad Keys */ |
| {OS.GDK_Up, SWT.ARROW_UP}, |
| {OS.GDK_Down, SWT.ARROW_DOWN}, |
| {OS.GDK_Left, SWT.ARROW_LEFT}, |
| {OS.GDK_Right, SWT.ARROW_RIGHT}, |
| {OS.GDK_Page_Up, SWT.PAGE_UP}, |
| {OS.GDK_Page_Down, SWT.PAGE_DOWN}, |
| {OS.GDK_Home, SWT.HOME}, |
| {OS.GDK_End, SWT.END}, |
| {OS.GDK_Insert, SWT.INSERT}, |
| |
| /* Virtual and Ascii Keys */ |
| {OS.GDK_BackSpace, SWT.BS}, |
| {OS.GDK_Return, SWT.CR}, |
| {OS.GDK_Delete, SWT.DEL}, |
| {OS.GDK_Escape, SWT.ESC}, |
| {OS.GDK_Cancel, SWT.ESC}, |
| {OS.GDK_Linefeed, SWT.LF}, |
| {OS.GDK_Tab, SWT.TAB}, |
| {OS.GDK_ISO_Left_Tab, SWT.TAB}, |
| |
| /* Functions Keys */ |
| {OS.GDK_F1, SWT.F1}, |
| {OS.GDK_F2, SWT.F2}, |
| {OS.GDK_F3, SWT.F3}, |
| {OS.GDK_F4, SWT.F4}, |
| {OS.GDK_F5, SWT.F5}, |
| {OS.GDK_F6, SWT.F6}, |
| {OS.GDK_F7, SWT.F7}, |
| {OS.GDK_F8, SWT.F8}, |
| {OS.GDK_F9, SWT.F9}, |
| {OS.GDK_F10, SWT.F10}, |
| {OS.GDK_F11, SWT.F11}, |
| {OS.GDK_F12, SWT.F12}, |
| |
| /* Numeric Keypad Constants */ |
| // {OS.GDK_KP_Add, SWT.KP_PLUS}, |
| // {OS.GDK_KP_Subtract, SWT.KP_MINUS}, |
| // {OS.GDK_KP_Multiply, SWT.KP_TIMES}, |
| // {OS.GDK_KP_Divide, SWT.KP_DIVIDE}, |
| // {OS.GDK_KP_Decimal, SWT.KP_PERIOD}, |
| // {OS.GDK_KP_Enter, SWT.CR}, |
| // {OS.GDK_KP_0, SWT.KP_0}, |
| // {OS.GDK_KP_1, SWT.KP_1}, |
| // {OS.GDK_KP_2, SWT.KP_2}, |
| // {OS.GDK_KP_3, SWT.KP_3}, |
| // {OS.GDK_KP_4, SWT.KP_4}, |
| // {OS.GDK_KP_5, SWT.KP_5}, |
| // {OS.GDK_KP_6, SWT.KP_6}, |
| // {OS.GDK_KP_7, SWT.KP_7}, |
| // {OS.GDK_KP_8, SWT.KP_8}, |
| // {OS.GDK_KP_9, SWT.KP_9}, |
| |
| }; |
| |
| /* Multiple Displays. */ |
| static Display Default; |
| static Display [] Displays = new Display [4]; |
| |
| /* Package name */ |
| static final String PACKAGE_PREFIX = "org.eclipse.swt.widgets."; |
| /* This code is intentionally commented. |
| * ".class" can not be used on CLDC. |
| */ |
| /*static { |
| String name = Display.class.getName (); |
| int index = name.lastIndexOf ('.'); |
| PACKAGE_NAME = name.substring (0, index + 1); |
| }*/ |
| |
| /* #define in gdkevents.h */ |
| static final int DOUBLE_CLICK_TIME = 250; |
| |
| /* Display Data */ |
| Object data; |
| String [] keys; |
| Object [] values; |
| |
| /* Initial Guesses for Shell Trimmings. */ |
| int borderTrimWidth = 4, borderTrimHeight = 4; |
| int resizeTrimWidth = 6, resizeTrimHeight = 6; |
| int titleBorderTrimWidth = 5, titleBorderTrimHeight = 28; |
| int titleResizeTrimWidth = 6, titleResizeTrimHeight = 29; |
| int titleTrimWidth = 0, titleTrimHeight = 23; |
| |
| /* |
| * TEMPORARY CODE. Install the runnable that |
| * gets the current display. This code will |
| * be removed in the future. |
| */ |
| static { |
| DeviceFinder = new Runnable () { |
| public void run () { |
| Device device = getCurrent (); |
| if (device == null) { |
| device = getDefault (); |
| } |
| setDevice (device); |
| } |
| }; |
| } |
| |
| /* |
| * TEMPORARY CODE. |
| */ |
| static void setDevice (Device device) { |
| CurrentDevice = device; |
| } |
| |
| /**
|
| * Constructs a new instance of this class.
|
| * <p>
|
| * Note: The resulting display is marked as the <em>current</em>
|
| * display. If this is the first display which has been
|
| * constructed since the application started, it is also
|
| * marked as the <em>default</em> display.
|
| * </p>
|
| *
|
| * @exception SWTException <ul>
|
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li>
|
| * <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li>
|
| * </ul>
|
| *
|
| * @see #getCurrent
|
| * @see #getDefault
|
| * @see Widget#checkSubclass
|
| * @see Shell
|
| */ |
| public Display () { |
| this (null); |
| } |
| |
| public Display (DeviceData data) { |
| super (data); |
| } |
| |
| void addLast (RunnableLock entry) { |
| synchronized (messageLock) { |
| if (messages == null) messages = new RunnableLock [4]; |
| if (messagesSize == messages.length) { |
| RunnableLock[] newMessages = new RunnableLock [messagesSize + 4]; |
| System.arraycopy (messages, 0, newMessages, 0, messagesSize); |
| messages = newMessages; |
| } |
| messages [messagesSize++] = entry; |
| } |
| } |
| |
| /**
|
| * Adds the listener to the collection of listeners who will
|
| * be notifed when an event of the given type occurs. When the
|
| * event does occur in the display, the listener is notified by
|
| * sending it the <code>handleEvent()</code> message.
|
| *
|
| * @param eventType the type of event to listen for
|
| * @param listener the listener which should be notified when the event occurs
|
| *
|
| * @exception IllegalArgumentException <ul>
|
| * <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
|
| * </ul>
|
| * @exception SWTException <ul>
|
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
|
| * </ul>
|
| *
|
| * @see Listener
|
| * @see #removeListener
|
| *
|
| * @since 2.0
|
| */ |
| public void addListener (int eventType, Listener listener) { |
| checkDevice (); |
| if (listener == null) error (SWT.ERROR_NULL_ARGUMENT); |
| if (eventTable == null) eventTable = new EventTable (); |
| eventTable.hook (eventType, listener); |
| } |
| |
| void addMouseHoverTimeout (int handle) { |
| if (mouseHoverId != 0) OS.gtk_timeout_remove (mouseHoverId); |
| mouseHoverId = OS.gtk_timeout_add (400, mouseHoverProc, handle); |
| mouseHoverHandle = handle; |
| } |
| |
| /**
|
| * Causes the <code>run()</code> method of the runnable to
|
| * be invoked by the user-interface thread at the next
|
| * reasonable opportunity. The caller of this method continues
|
| * to run in parallel, and is not notified when the
|
| * runnable has completed.
|
| *
|
| * @param runnable code to run on the user-interface thread.
|
| *
|
| * @see #syncExec
|
| */ |
| public void asyncExec (Runnable runnable) { |
| if (isDisposed ()) error (SWT.ERROR_DEVICE_DISPOSED); |
| synchronizer.asyncExec (runnable); |
| } |
| |
| /**
|
| * Causes the system hardware to emit a short sound
|
| * (if it supports this capability).
|
| */ |
| public void beep () { |
| if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS); |
| OS.gdk_beep(); |
| OS.gdk_flush(); |
| } |
| |
| protected void checkDevice () { |
| if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS); |
| if (isDisposed ()) error (SWT.ERROR_DEVICE_DISPOSED); |
| } |
| |
| static synchronized void checkDisplay (Thread thread) { |
| for (int i=0; i<Displays.length; i++) { |
| if (Displays [i] != null && Displays [i].thread == thread) { |
| SWT.error (SWT.ERROR_THREAD_INVALID_ACCESS); |
| } |
| } |
| } |
| |
| protected void checkSubclass () { |
| if (!isValidClass (getClass ())) error (SWT.ERROR_INVALID_SUBCLASS); |
| } |
| |
| /**
|
| * Requests that the connection between SWT and the underlying
|
| * operating system be closed.
|
| *
|
| * @exception SWTException <ul>
|
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
|
| * </ul>
|
| *
|
| * @see #dispose
|
| *
|
| * @since 2.0
|
| */ |
| public void close () { |
| checkDevice (); |
| Event event = new Event (); |
| sendEvent (SWT.Close, event); |
| if (event.doit) dispose (); |
| } |
| |
| protected void create (DeviceData data) { |
| checkSubclass (); |
| checkDisplay(thread = Thread.currentThread ()); |
| createDisplay (data); |
| register (); |
| if (Default == null) Default = this; |
| } |
| |
| synchronized void createDisplay (DeviceData data) { |
| if (!OS.g_thread_supported ()) { |
| OS.g_thread_init (0); |
| OS.gdk_threads_init (); |
| } |
| OS.gtk_set_locale(); |
| if (!OS.gtk_init_check (new int [] {0}, null)) { |
| SWT.error (SWT.ERROR_DEVICE_DISPOSED); |
| return; |
| } |
| OS.gdk_rgb_init (); |
| int ptr = OS.gtk_check_version (2, 0, 1); |
| if (ptr != 0) { |
| int length = OS.strlen (ptr); |
| byte [] buffer = new byte [length]; |
| OS.memmove (buffer, ptr, length); |
| System.out.println ("***WARNING: " + new String (Converter.mbcsToWcs (null, buffer))); |
| } |
| } |
| |
| synchronized void deregister () { |
| for (int i=0; i<Displays.length; i++) { |
| if (this == Displays [i]) Displays [i] = null; |
| } |
| } |
| |
| protected void destroy () { |
| if (this == Default) Default = null; |
| deregister (); |
| destroyDisplay (); |
| } |
| |
| void destroyDisplay () { |
| } |
| |
| /**
|
| * Returns the display which the given thread is the
|
| * user-interface thread for, or null if the given thread
|
| * is not a user-interface thread for any display.
|
| *
|
| * @param thread the user-interface thread
|
| * @return the display for the given thread
|
| */ |
| public static synchronized Display findDisplay (Thread thread) { |
| for (int i=0; i<Displays.length; i++) { |
| Display display = Displays [i]; |
| if (display != null && display.thread == thread) { |
| return display; |
| } |
| } |
| return null; |
| } |
| |
| /**
|
| * Causes the <code>run()</code> method of the runnable to
|
| * be invoked by the user-interface thread just before the
|
| * receiver is disposed.
|
| *
|
| * @param runnable code to run at dispose time.
|
| */ |
| public void disposeExec (Runnable runnable) { |
| checkDevice (); |
| if (disposeList == null) disposeList = new Runnable [4]; |
| for (int i=0; i<disposeList.length; i++) { |
| if (disposeList [i] == null) { |
| disposeList [i] = runnable; |
| return; |
| } |
| } |
| Runnable [] newDisposeList = new Runnable [disposeList.length + 4]; |
| System.arraycopy (disposeList, 0, newDisposeList, 0, disposeList.length); |
| newDisposeList [disposeList.length] = runnable; |
| disposeList = newDisposeList; |
| } |
| |
| /** |
| * Does whatever display specific cleanup is required, and then |
| * uses the code in <code>SWTError.error</code> to handle the error. |
| * |
| * @param code the descriptive error code |
| * |
| * @see SWTError#error |
| */ |
| void error (int code) { |
| SWT.error (code); |
| } |
| |
| /**
|
| * Given the operating system handle for a widget, returns
|
| * the instance of the <code>Widget</code> subclass which
|
| * represents it in the currently running application, if
|
| * such exists, or null if no matching widget can be found.
|
| *
|
| * @param handle the handle for the widget
|
| * @return the SWT widget that the handle represents
|
| *
|
| * @exception SWTException <ul>
|
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
|
| * </ul>
|
| */ |
| public Widget findWidget (int handle) { |
| checkDevice (); |
| // In 0.058 and before, this used to go up the parent |
| // chain if the handle was not found in the widget |
| // table, up to the root. Now, we require that all |
| // widgets register ALL their handles. |
| // If somebody creates their own handles outside |
| // SWT, it's their problem. |
| return WidgetTable.get (handle); |
| } |
| |
| /* |
| * In SWT, we force all widgets to have real Gdk windows, |
| * thus getting rid of the concept of "lightweight" widgets. |
| * Given a GdkWindow, answer a handle to the GtkWidget realized |
| * through that window. |
| * If the argument is not the pointe rto a GdkWindow, the |
| * universe will be left in an inconsistent state. |
| */ |
| int findGtkWidgetByGdkWindow (int gdkWindow) { |
| int[] pwidget = new int[1]; |
| OS.gdk_window_get_user_data(gdkWindow, pwidget); |
| return pwidget[0]; |
| } |
| |
| /**
|
| * Returns the currently active <code>Shell</code>, or null
|
| * if no shell belonging to the currently running application
|
| * is active.
|
| *
|
| * @return the active shell or null
|
| *
|
| * @exception SWTException <ul>
|
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
|
| * </ul>
|
| */ |
| public Shell getActiveShell () { |
| checkDevice (); |
| Shell [] shells = getShells(); |
| for (int i=0; i<shells.length; i++) { |
| if (shells [i].hasFocus) return shells [i]; |
| } |
| return null; |
| } |
| |
| /**
|
| * Returns a rectangle describing the receiver's size and location.
|
| *
|
| * @return the bounding rectangle
|
| *
|
| * @exception SWTException <ul>
|
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
|
| * </ul>
|
| */ |
| public Rectangle getBounds () { |
| checkDevice (); |
| return new Rectangle(0, 0, OS.gdk_screen_width (), OS.gdk_screen_height ()); |
| } |
| |
| /**
|
| * Returns the display which the currently running thread is
|
| * the user-interface thread for, or null if the currently
|
| * running thread is not a user-interface thread for any display.
|
| *
|
| * @return the current display
|
| */ |
| public static synchronized Display getCurrent () { |
| Thread current = Thread.currentThread (); |
| for (int i=0; i<Displays.length; i++) { |
| Display display = Displays [i]; |
| if (display != null && display.thread == current) return display; |
| } |
| return null; |
| } |
| |
| /**
|
| * Returns the control which the on-screen pointer is currently
|
| * over top of, or null if it is not currently over one of the
|
| * controls built by the currently running application.
|
| *
|
| * @return the control under the cursor
|
| *
|
| * @exception SWTException <ul>
|
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
|
| * </ul>
|
| */ |
| public Control getCursorControl () { |
| checkDevice(); |
| int[] x = new int[1], y = new int[1]; |
| int cursorWindowHandle = OS.gdk_window_at_pointer(x,y); |
| if (cursorWindowHandle==0) return null; |
| int handle = findGtkWidgetByGdkWindow(cursorWindowHandle); |
| if (handle==0) return null; |
| return findControl(handle); |
| } |
| |
| Control findControl(int h) { |
| Widget w = findWidget(h); |
| if (w==null) return null; |
| if (w instanceof Control) return (Control)w; |
| |
| /* w is something like an Item. Go for the parent */ |
| return findControl(OS.gtk_widget_get_parent (h)); |
| } |
| |
| /**
|
| * Returns the location of the on-screen pointer relative
|
| * to the top left corner of the screen.
|
| *
|
| * @return the cursor location
|
| *
|
| * @exception SWTException <ul>
|
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
|
| * </ul>
|
| */ |
| public Point getCursorLocation () { |
| checkDevice (); |
| int [] x = new int [1], y = new int [1]; |
| OS.gdk_window_get_pointer (0, x, y, null); |
| return new Point (x [0], y [0]); |
| } |
| |
| /**
|
| * Returns the application defined property of the receiver
|
| * with the specified name, or null if it has not been set.
|
| * <p>
|
| * Applications may have associated arbitrary objects with the
|
| * receiver in this fashion. If the objects stored in the
|
| * properties need to be notified when the display is disposed
|
| * of, it is the application's responsibility provide a
|
| * <code>disposeExec()</code> handler which does so.
|
| * </p>
|
| *
|
| * @param key the name of the property
|
| * @return the value of the property or null if it has not been set
|
| *
|
| * @exception IllegalArgumentException <ul>
|
| * <li>ERROR_NULL_ARGUMENT - if the key is null</li>
|
| * </ul>
|
| * @exception SWTException <ul>
|
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
|
| * </ul>
|
| *
|
| * @see #setData
|
| * @see #disposeExec
|
| */ |
| public Object getData (String key) { |
| checkDevice (); |
| if (key == null) error (SWT.ERROR_NULL_ARGUMENT); |
| if (keys == null) return null; |
| for (int i=0; i<keys.length; i++) { |
| if (keys [i].equals (key)) return values [i]; |
| } |
| return null; |
| } |
| |
| /**
|
| * Returns the application defined, display specific data
|
| * associated with the receiver, or null if it has not been
|
| * set. The <em>display specific data</em> is a single,
|
| * unnamed field that is stored with every display.
|
| * <p>
|
| * Applications may put arbitrary objects in this field. If
|
| * the object stored in the display specific data needs to
|
| * be notified when the display is disposed of, it is the
|
| * application's responsibility provide a
|
| * <code>disposeExec()</code> handler which does so.
|
| * </p>
|
| *
|
| * @return the display specific data
|
| *
|
| * @exception SWTException <ul>
|
| * <li>ERROR_THREAD_INVALID_ACCESS - when called from the wrong thread</li>
|
| * </ul>
|
| *
|
| * @see #setData
|
| * @see #disposeExec
|
| */ |
| public Object getData () { |
| checkDevice (); |
| return data; |
| } |
| |
| /** |
| * 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_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> |
| * </ul> |
| */ |
| public Point getDPI () { |
| checkDevice (); |
| /* Apparently, SWT believes pixels are always square */ |
| int widthMM = OS.gdk_screen_width_mm (); |
| int width = OS.gdk_screen_width (); |
| int dpi = Compatibility.round(254 * width, widthMM * 10); |
| return new Point (dpi, dpi); |
| } |
| |
| /**
|
| * Returns the default display. One is created (making the
|
| * thread that invokes this method its user-interface thread)
|
| * if it did not already exist.
|
| *
|
| * @return the default display
|
| */ |
| public static synchronized Display getDefault () { |
| if (Default == null) Default = new Display (); |
| return Default; |
| } |
| |
| static boolean isValidClass (Class clazz) { |
| String name = clazz.getName (); |
| int index = name.lastIndexOf ('.'); |
| return name.substring (0, index + 1).equals (PACKAGE_PREFIX); |
| } |
| |
| /**
|
| * Returns the longest duration, in milliseconds, between
|
| * two mouse button clicks that will be considered a
|
| * <em>double click</em> by the underlying operating system.
|
| *
|
| * @return the double click time
|
| *
|
| * @exception SWTException <ul>
|
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
|
| * </ul>
|
| */ |
| public int getDoubleClickTime () { |
| checkDevice (); |
| return DOUBLE_CLICK_TIME; |
| } |
| |
| /**
|
| * Returns the control which currently has keyboard focus,
|
| * or null if keyboard events are not currently going to
|
| * any of the controls built by the currently running
|
| * application.
|
| *
|
| * @return the control under the cursor
|
| *
|
| * @exception SWTException <ul>
|
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
|
| * </ul>
|
| */ |
| public Control getFocusControl () { |
| checkDevice (); |
| Shell active = getActiveShell(); |
| if (active==null) return null; |
| return active.getFocusControl(); |
| } |
| |
| public int getDepth () { |
| checkDevice (); |
| GdkVisual visual = new GdkVisual (); |
| OS.memmove (visual, OS.gdk_visual_get_system()); |
| return visual.depth; |
| } |
| |
| /**
|
| * Returns the maximum allowed depth of icons on this display.
|
| * On some platforms, this may be different than the actual
|
| * depth of the display.
|
| *
|
| * @return the maximum icon depth
|
| *
|
| * @exception SWTException <ul>
|
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
|
| * </ul>
|
| */ |
| public int getIconDepth () { |
| checkDevice (); |
| return getDepth (); |
| } |
| |
| /**
|
| * Returns an array containing all shells which have not been
|
| * disposed and have the receiver as their display.
|
| *
|
| * @return the receiver's shells
|
| *
|
| * @exception SWTException <ul>
|
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
|
| * </ul>
|
| */ |
| public Shell [] getShells () { |
| checkDevice (); |
| int count = 0; |
| Shell [] shells = WidgetTable.shells (); |
| for (int i=0; i<shells.length; i++) { |
| Shell shell = shells [i]; |
| if (!shell.isDisposed () && (this == shell.getDisplay ())) { |
| count++; |
| } |
| } |
| int index = 0; |
| Shell [] result = new Shell [count]; |
| for (int i=0; i<shells.length; i++) { |
| Shell shell = shells [i]; |
| if (!shell.isDisposed () && (this == shell.getDisplay ())) { |
| result [index++] = shell; |
| } |
| } |
| return result; |
| } |
| |
| /**
|
| * Returns the thread that has invoked <code>syncExec</code>
|
| * or null if no such runnable is currently being invoked by
|
| * the user-interface thread.
|
| * <p>
|
| * Note: If a runnable invoked by asyncExec is currently
|
| * running, this method will return null.
|
| * </p>
|
| *
|
| * @return the receiver's sync-interface thread
|
| */ |
| public Thread getSyncThread () { |
| if (isDisposed ()) error (SWT.ERROR_DEVICE_DISPOSED); |
| return synchronizer.syncThread; |
| } |
| |
| /**
|
| * 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 free'd because it was allocated by the system,
|
| * not the application.
|
| *
|
| * @param id the color constant
|
| * @return the matching color
|
| *
|
| * @exception SWTException <ul>
|
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
|
| * </ul>
|
| *
|
| * @see SWT
|
| */ |
| public Color getSystemColor (int id) { |
| checkDevice (); |
| GdkColor gdkColor = null; |
| switch (id) { |
| case SWT.COLOR_INFO_FOREGROUND: gdkColor = COLOR_INFO_FOREGROUND; break; |
| case SWT.COLOR_INFO_BACKGROUND: gdkColor = COLOR_INFO_BACKGROUND; break; |
| case SWT.COLOR_TITLE_FOREGROUND: gdkColor = COLOR_TITLE_FOREGROUND; break; |
| case SWT.COLOR_TITLE_BACKGROUND: gdkColor = COLOR_TITLE_BACKGROUND; break; |
| case SWT.COLOR_TITLE_BACKGROUND_GRADIENT: gdkColor = COLOR_TITLE_BACKGROUND_GRADIENT; break; |
| case SWT.COLOR_TITLE_INACTIVE_FOREGROUND: gdkColor = COLOR_TITLE_INACTIVE_FOREGROUND; break; |
| case SWT.COLOR_TITLE_INACTIVE_BACKGROUND: gdkColor = COLOR_TITLE_INACTIVE_BACKGROUND; break; |
| case SWT.COLOR_TITLE_INACTIVE_BACKGROUND_GRADIENT: gdkColor = COLOR_TITLE_INACTIVE_BACKGROUND_GRADIENT; break; |
| case SWT.COLOR_WIDGET_DARK_SHADOW: gdkColor = COLOR_WIDGET_DARK_SHADOW; break; |
| case SWT.COLOR_WIDGET_NORMAL_SHADOW: gdkColor = COLOR_WIDGET_NORMAL_SHADOW; break; |
| case SWT.COLOR_WIDGET_LIGHT_SHADOW: gdkColor = COLOR_WIDGET_LIGHT_SHADOW; break; |
| case SWT.COLOR_WIDGET_HIGHLIGHT_SHADOW: gdkColor = COLOR_WIDGET_HIGHLIGHT_SHADOW; break; |
| case SWT.COLOR_WIDGET_BACKGROUND: gdkColor = COLOR_WIDGET_BACKGROUND; break; |
| case SWT.COLOR_WIDGET_FOREGROUND: gdkColor = COLOR_WIDGET_FOREGROUND; break; |
| case SWT.COLOR_WIDGET_BORDER: gdkColor = COLOR_WIDGET_BORDER; break; |
| case SWT.COLOR_LIST_FOREGROUND: gdkColor = COLOR_LIST_FOREGROUND; break; |
| case SWT.COLOR_LIST_BACKGROUND: gdkColor = COLOR_LIST_BACKGROUND; break; |
| case SWT.COLOR_LIST_SELECTION: gdkColor = COLOR_LIST_SELECTION; break; |
| case SWT.COLOR_LIST_SELECTION_TEXT: gdkColor = COLOR_LIST_SELECTION_TEXT; break; |
| default: |
| return super.getSystemColor (id); |
| } |
| if (gdkColor == null) return super.getSystemColor (SWT.COLOR_BLACK); |
| return Color.gtk_new (this, gdkColor); |
| } |
| |
| void initializeSystemResources () { |
| int shellHandle = OS.gtk_window_new (OS.GTK_WINDOW_TOPLEVEL); |
| if (shellHandle == 0) SWT.error (SWT.ERROR_NO_HANDLES); |
| OS.gtk_widget_realize (shellHandle); |
| |
| int tooltipShellHandle = OS.gtk_window_new (OS.GTK_WINDOW_POPUP); |
| if (tooltipShellHandle == 0) SWT.error (SWT.ERROR_NO_HANDLES); |
| byte[] gtk_tooltips = Converter.wcsToMbcs (null, "gtk-tooltips", true); |
| OS.gtk_widget_set_name (tooltipShellHandle, gtk_tooltips); |
| OS.gtk_widget_realize (tooltipShellHandle); |
| |
| GdkColor gdkColor; |
| GtkStyle style = new GtkStyle(); |
| OS.memmove (style, OS.gtk_widget_get_style (shellHandle)); |
| GtkStyle tooltipStyle = new GtkStyle(); |
| OS.memmove (tooltipStyle, OS.gtk_widget_get_style (tooltipShellHandle)); |
| |
| defaultFont = OS.pango_font_description_copy (style.font_desc); |
| |
| gdkColor = new GdkColor(); |
| gdkColor.pixel = style.black_pixel; |
| gdkColor.red = style.black_red; |
| gdkColor.green = style.black_green; |
| gdkColor.blue = style.black_blue; |
| COLOR_WIDGET_DARK_SHADOW = gdkColor; |
| |
| gdkColor = new GdkColor(); |
| gdkColor.pixel = style.dark0_pixel; |
| gdkColor.red = style.dark0_red; |
| gdkColor.green = style.dark0_green; |
| gdkColor.blue = style.dark0_blue; |
| COLOR_WIDGET_NORMAL_SHADOW = gdkColor; |
| |
| gdkColor = new GdkColor(); |
| gdkColor.pixel = style.bg0_pixel; |
| gdkColor.red = style.bg0_red; |
| gdkColor.green = style.bg0_green; |
| gdkColor.blue = style.bg0_blue; |
| COLOR_WIDGET_LIGHT_SHADOW = gdkColor; |
| |
| gdkColor = new GdkColor(); |
| gdkColor.pixel = style.light0_pixel; |
| gdkColor.red = style.light0_red; |
| gdkColor.green = style.light0_green; |
| gdkColor.blue = style.light0_blue; |
| COLOR_WIDGET_HIGHLIGHT_SHADOW = gdkColor; |
| |
| gdkColor = new GdkColor(); |
| gdkColor.pixel = style.fg0_pixel; |
| gdkColor.red = style.fg0_red; |
| gdkColor.green = style.fg0_green; |
| gdkColor.blue = style.fg0_blue; |
| COLOR_WIDGET_FOREGROUND = gdkColor; |
| |
| gdkColor = new GdkColor(); |
| gdkColor.pixel = style.bg0_pixel; |
| gdkColor.red = style.bg0_red; |
| gdkColor.green = style.bg0_green; |
| gdkColor.blue = style.bg0_blue; |
| COLOR_WIDGET_BACKGROUND = gdkColor; |
| |
| gdkColor = new GdkColor(); |
| gdkColor.pixel = style.text0_pixel; |
| gdkColor.red = style.text0_red; |
| gdkColor.green = style.text0_green; |
| gdkColor.blue = style.text0_blue; |
| COLOR_TEXT_FOREGROUND = gdkColor; |
| |
| gdkColor = new GdkColor(); |
| gdkColor.pixel = style.base0_pixel; |
| gdkColor.red = style.base0_red; |
| gdkColor.green = style.base0_green; |
| gdkColor.blue = style.base0_blue; |
| COLOR_TEXT_BACKGROUND = gdkColor; |
| |
| gdkColor = new GdkColor(); |
| gdkColor.pixel = style.text0_pixel; |
| gdkColor.red = style.text0_red; |
| gdkColor.green = style.text0_green; |
| gdkColor.blue = style.text0_blue; |
| COLOR_LIST_FOREGROUND = gdkColor; |
| |
| gdkColor = new GdkColor(); |
| gdkColor.pixel = style.base0_pixel; |
| gdkColor.red = style.base0_red; |
| gdkColor.green = style.base0_green; |
| gdkColor.blue = style.base0_blue; |
| COLOR_LIST_BACKGROUND = gdkColor; |
| |
| gdkColor = new GdkColor(); |
| gdkColor.pixel = style.fg3_pixel; |
| gdkColor.red = style.fg3_red; |
| gdkColor.green = style.fg3_green; |
| gdkColor.blue = style.fg3_blue; |
| COLOR_LIST_SELECTION_TEXT = gdkColor; |
| |
| gdkColor = new GdkColor(); |
| gdkColor.pixel = style.bg3_pixel; |
| gdkColor.red = style.bg3_red; |
| gdkColor.green = style.bg3_green; |
| gdkColor.blue = style.bg3_blue; |
| COLOR_LIST_SELECTION = gdkColor; |
| |
| gdkColor = new GdkColor(); |
| gdkColor.pixel = tooltipStyle.fg0_pixel; |
| gdkColor.red = tooltipStyle.fg0_red; |
| gdkColor.green = tooltipStyle.fg0_green; |
| gdkColor.blue = tooltipStyle.fg0_blue; |
| COLOR_INFO_FOREGROUND = gdkColor; |
| |
| gdkColor = new GdkColor(); |
| gdkColor.pixel = tooltipStyle.bg0_pixel; |
| gdkColor.red = tooltipStyle.bg0_red; |
| gdkColor.green = tooltipStyle.bg0_green; |
| gdkColor.blue = tooltipStyle.bg0_blue; |
| COLOR_INFO_BACKGROUND = gdkColor; |
| |
| gdkColor = new GdkColor(); |
| gdkColor.pixel = style.bg3_pixel; |
| gdkColor.red = style.bg3_red; |
| gdkColor.green = style.bg3_green; |
| gdkColor.blue = style.bg3_blue; |
| COLOR_TITLE_BACKGROUND = gdkColor; |
| |
| gdkColor = new GdkColor(); |
| gdkColor.pixel = style.fg3_pixel; |
| gdkColor.red = style.fg3_red; |
| gdkColor.green = style.fg3_green; |
| gdkColor.blue = style.fg3_blue; |
| COLOR_TITLE_FOREGROUND = gdkColor; |
| |
| gdkColor = new GdkColor(); |
| gdkColor.pixel = style.light3_pixel; |
| gdkColor.red = style.light3_red; |
| gdkColor.green = style.light3_green; |
| gdkColor.blue = style.light3_blue; |
| COLOR_TITLE_BACKGROUND_GRADIENT = gdkColor; |
| |
| gdkColor = new GdkColor(); |
| gdkColor.pixel = style.bg4_pixel; |
| gdkColor.red = style.bg4_red; |
| gdkColor.green = style.bg4_green; |
| gdkColor.blue = style.bg4_blue; |
| COLOR_TITLE_INACTIVE_BACKGROUND = gdkColor; |
| |
| gdkColor = new GdkColor(); |
| gdkColor.pixel = style.fg4_pixel; |
| gdkColor.red = style.fg4_red; |
| gdkColor.green = style.fg4_green; |
| gdkColor.blue = style.fg4_blue; |
| COLOR_TITLE_INACTIVE_FOREGROUND = gdkColor; |
| |
| gdkColor = new GdkColor(); |
| gdkColor.pixel = style.light4_pixel; |
| gdkColor.red = style.light4_red; |
| gdkColor.green = style.light4_green; |
| gdkColor.blue = style.light4_blue; |
| COLOR_TITLE_INACTIVE_BACKGROUND_GRADIENT = gdkColor; |
| |
| OS.gtk_widget_destroy (tooltipShellHandle); |
| OS.gtk_widget_destroy (shellHandle); |
| } |
| |
| /**
|
| * 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 free'd 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_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
|
| * </ul>
|
| */ |
| public Font getSystemFont () { |
| checkDevice (); |
| return Font.gtk_new (this, defaultFont); |
| } |
| |
| /**
|
| * Returns the user-interface thread for the receiver.
|
| *
|
| * @return the receiver's user-interface thread
|
| */ |
| public Thread getThread () { |
| if (isDisposed ()) error (SWT.ERROR_DEVICE_DISPOSED); |
| return thread; |
| } |
| |
| protected void init () { |
| super.init (); |
| initializeCallbacks (); |
| initializeSystemResources (); |
| } |
| |
| void initializeCallbacks () { |
| keyCallback = new Callback (this, "keyProc", 3); |
| keyProc = keyCallback.getAddress (); |
| if (keyProc == 0) SWT.error (SWT.ERROR_NO_MORE_CALLBACKS); |
| |
| windowCallback2 = new Callback (this, "windowProc", 2); |
| windowProc2 = windowCallback2.getAddress (); |
| if (windowProc2 == 0) SWT.error (SWT.ERROR_NO_MORE_CALLBACKS); |
| |
| windowCallback3 = new Callback (this, "windowProc", 3); |
| windowProc3 = windowCallback3.getAddress (); |
| if (windowProc3 == 0) SWT.error (SWT.ERROR_NO_MORE_CALLBACKS); |
| |
| windowCallback4 = new Callback (this, "windowProc", 4); |
| windowProc4 = windowCallback4.getAddress (); |
| if (windowProc4 == 0) SWT.error (SWT.ERROR_NO_MORE_CALLBACKS); |
| |
| windowCallback5 = new Callback (this, "windowProc", 5); |
| windowProc5 = windowCallback5.getAddress (); |
| if (windowProc5 == 0) SWT.error (SWT.ERROR_NO_MORE_CALLBACKS); |
| |
| timerCallback = new Callback (this, "timerProc", 2); |
| timerProc = timerCallback.getAddress (); |
| if (timerProc == 0) error (SWT.ERROR_NO_MORE_CALLBACKS); |
| |
| windowTimerCallback = new Callback (this, "windowTimerProc", 2); |
| windowTimerProc = windowTimerCallback.getAddress (); |
| if (windowTimerProc == 0) error (SWT.ERROR_NO_MORE_CALLBACKS); |
| |
| mouseHoverCallback = new Callback (this, "mouseHoverProc", 2); |
| mouseHoverProc = mouseHoverCallback.getAddress (); |
| if (mouseHoverProc == 0) error (SWT.ERROR_NO_MORE_CALLBACKS); |
| |
| caretCallback = new Callback(this, "caretProc", 2); |
| caretProc = caretCallback.getAddress(); |
| if (caretProc == 0) error (SWT.ERROR_NO_MORE_CALLBACKS); |
| |
| selectionIterCallback = new Callback(this, "selectionIterProc", 4); |
| selectionIterProc = selectionIterCallback.getAddress(); |
| if (selectionIterProc == 0) error (SWT.ERROR_NO_MORE_CALLBACKS); |
| |
| toggleCallback = new Callback(this, "toggleProc", 3); |
| toggleProc = toggleCallback.getAddress(); |
| if (toggleProc == 0) error (SWT.ERROR_NO_MORE_CALLBACKS); |
| } |
| |
| /**
|
| * 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>Display</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 handle the platform specific GC handle
|
| * @param data the platform specific GC data
|
| *
|
| * @private
|
| */ |
| public void internal_dispose_GC (int gdkGC, GCData data) { |
| OS.g_object_unref(gdkGC); |
| } |
| |
| /**
|
| * 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>Display</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
|
| *
|
| * @private
|
| */ |
| public int internal_new_GC (GCData data) { |
| if (isDisposed()) SWT.error(SWT.ERROR_DEVICE_DISPOSED); |
| int root = OS.GDK_ROOT_PARENT(); |
| int gdkGC = OS.gdk_gc_new(root); |
| if (gdkGC == 0) SWT.error(SWT.ERROR_NO_HANDLES); |
| if (data != null) { |
| data.device = this; |
| data.drawable = root; |
| data.font = defaultFont; |
| } |
| return gdkGC; |
| } |
| |
| boolean isValidThread () { |
| return thread == Thread.currentThread (); |
| } |
| |
| int mouseHoverProc (int handle, int id) { |
| Widget widget = WidgetTable.get (handle); |
| if (widget == null) return 0; |
| return widget.processMouseHover (id); |
| } |
| |
| void postEvent (Event event) { |
| /* |
| * Place the event at the end of the event queue. |
| * This code is always called in the Display's |
| * thread so it must be re-enterant but does not |
| * need to be synchronized. |
| */ |
| if (eventQueue == null) eventQueue = new Event [4]; |
| int index = 0; |
| int length = eventQueue.length; |
| while (index < length) { |
| if (eventQueue [index] == null) break; |
| index++; |
| } |
| if (index == length) { |
| Event [] newQueue = new Event [length + 4]; |
| System.arraycopy (eventQueue, 0, newQueue, 0, length); |
| eventQueue = newQueue; |
| } |
| eventQueue [index] = event; |
| } |
| |
| /**
|
| * Reads an event from the operating system's event queue,
|
| * dispatches it appropriately, and returns <code>true</code>
|
| * if there is potentially more work to do, or <code>false</code>
|
| * if the caller can sleep until another event is placed on
|
| * the event queue.
|
| * <p>
|
| * In addition to checking the system event queue, this method also
|
| * checks if any inter-thread messages (created by <code>syncExec()</code>
|
| * or <code>asyncExec()</code>) are waiting to be processed, and if
|
| * so handles them before returning.
|
| * </p>
|
| *
|
| * @return <code>false</code> if the caller can sleep upon return from this method
|
| *
|
| * @exception SWTException <ul>
|
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
|
| * </ul>
|
| *
|
| * @see #sleep
|
| * @see #wake
|
| */ |
| public boolean readAndDispatch () { |
| checkDevice (); |
| int status = OS.gtk_events_pending (); |
| if (status != 0) { |
| // if ((status & OS.XtIMTimer) != 0) OS.XtAppProcessEvent (context, OS.XtIMTimer); |
| // if ((status & OS.XtIMAlternateInput) != 0) OS.XtAppProcessEvent (context, OS.XtIMAlternateInput); |
| // if ((status & OS.XtIMXEvent) != 0) { |
| // OS.XtAppNextEvent (context, event); |
| // OS.XtDispatchEvent (event); |
| // } |
| /* int eventPtr = OS.gdk_event_get(); |
| if (eventPtr != 0) { |
| OS.gtk_main_do_event(eventPtr); |
| }*/ |
| OS.gtk_main_iteration (); |
| runDeferredEvents (); |
| return true; |
| } |
| return runAsyncMessages (); |
| } |
| |
| synchronized void register () { |
| for (int i=0; i<Displays.length; i++) { |
| if (Displays [i] == null) { |
| Displays [i] = this; |
| return; |
| } |
| } |
| Display [] newDisplays = new Display [Displays.length + 4]; |
| System.arraycopy (Displays, 0, newDisplays, 0, Displays.length); |
| newDisplays [Displays.length] = this; |
| Displays = newDisplays; |
| } |
| |
| protected void release () { |
| sendEvent (SWT.Dispose, new Event ()); |
| Shell [] shells = WidgetTable.shells (); |
| for (int i=0; i<shells.length; i++) { |
| Shell shell = shells [i]; |
| if (!shell.isDisposed ()) { |
| if (this == shell.getDisplay ()) shell.dispose (); |
| } |
| } |
| while (readAndDispatch ()) {}; |
| if (disposeList != null) { |
| for (int i=0; i<disposeList.length; i++) { |
| if (disposeList [i] != null) disposeList [i].run (); |
| } |
| } |
| disposeList = null; |
| synchronizer.releaseSynchronizer (); |
| synchronizer = null; |
| releaseDisplay (); |
| super.release (); |
| } |
| |
| void releaseDisplay () { |
| keyCallback.dispose (); keyCallback = null; |
| windowCallback2.dispose (); windowCallback2 = null; |
| windowCallback3.dispose (); windowCallback3 = null; |
| windowCallback4.dispose (); windowCallback4 = null; |
| windowCallback5.dispose (); windowCallback5 = null; |
| |
| /* Dispose the caret callback */ |
| if (caretId != 0) OS.gtk_timeout_remove (caretId); |
| caretId = caretProc = 0; |
| caretCallback.dispose (); |
| caretCallback = null; |
| |
| /* Dispose the timer callback */ |
| if (timerIds != null) { |
| for (int i=0; i<timerIds.length; i++) { |
| if (timerIds [i] != 0) OS.gtk_timeout_remove (timerIds [i]); |
| } |
| } |
| timerIds = null; |
| timerList = null; |
| timerProc = 0; |
| timerCallback.dispose (); |
| timerCallback = null; |
| windowTimerProc = 0; |
| windowTimerCallback.dispose (); |
| windowTimerCallback = null; |
| |
| /* Dispose mouse hover callback */ |
| if (mouseHoverId != 0) OS.gtk_timeout_remove (mouseHoverId); |
| mouseHoverId = mouseHoverHandle = mouseHoverProc = 0; |
| mouseHoverCallback.dispose (); |
| mouseHoverCallback = null; |
| |
| messages = null; messageLock = null; thread = null; |
| messagesSize = windowProc2 = windowProc3 = windowProc4 = windowProc5 = keyProc = 0; |
| |
| if (defaultFont != 0) OS.pango_font_description_free (defaultFont); |
| defaultFont = 0; |
| |
| COLOR_WIDGET_DARK_SHADOW = COLOR_WIDGET_NORMAL_SHADOW = COLOR_WIDGET_LIGHT_SHADOW = |
| COLOR_WIDGET_HIGHLIGHT_SHADOW = COLOR_WIDGET_BACKGROUND = COLOR_WIDGET_BORDER = |
| COLOR_LIST_FOREGROUND = COLOR_LIST_BACKGROUND = COLOR_LIST_SELECTION = COLOR_LIST_SELECTION_TEXT = |
| COLOR_INFO_BACKGROUND = null; |
| } |
| |
| RunnableLock removeFirst () { |
| synchronized (messageLock) { |
| if (messagesSize == 0) return null; |
| RunnableLock lock = messages [0]; |
| System.arraycopy (messages, 1, messages, 0, --messagesSize); |
| messages [messagesSize] = null; |
| if (messagesSize == 0) messages = null; |
| return lock; |
| } |
| } |
| |
| /**
|
| * Removes the listener from the collection of listeners who will
|
| * be notifed when an event of the given type occurs.
|
| *
|
| * @param eventType the type of event to listen for
|
| * @param listener the listener which should no longer be notified when the event occurs
|
| *
|
| * @exception IllegalArgumentException <ul>
|
| * <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
|
| * </ul>
|
| * @exception SWTException <ul>
|
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
|
| * </ul>
|
| *
|
| * @see Listener
|
| * @see #addListener
|
| *
|
| * @since 2.0
|
| */ |
| public void removeListener (int eventType, Listener listener) { |
| checkDevice (); |
| if (listener == null) error (SWT.ERROR_NULL_ARGUMENT); |
| if (eventTable == null) return; |
| eventTable.unhook (eventType, listener); |
| } |
| |
| void removeMouseHoverTimeout (int handle) { |
| if (handle != mouseHoverHandle) return; |
| if (mouseHoverId != 0) OS.gtk_timeout_remove (mouseHoverId); |
| mouseHoverId = mouseHoverHandle = 0; |
| } |
| |
| boolean runAsyncMessages () { |
| return synchronizer.runAsyncMessages (); |
| } |
| |
| boolean runDeferredEvents () { |
| /* |
| * Run deferred events. This code is always |
| * called in the Display's thread so it must |
| * be re-enterant but need not be synchronized. |
| */ |
| while (eventQueue != null) { |
| |
| /* Take an event off the queue */ |
| Event event = eventQueue [0]; |
| if (event == null) break; |
| int length = eventQueue.length; |
| System.arraycopy (eventQueue, 1, eventQueue, 0, --length); |
| eventQueue [length] = null; |
| |
| /* Run the event */ |
| Widget widget = event.widget; |
| if (widget != null && !widget.isDisposed ()) { |
| Widget item = event.item; |
| if (item == null || !item.isDisposed ()) { |
| widget.sendEvent (event); |
| |
| /* Ask for the next mouse event */ |
| if (event.type == SWT.MouseMove) { |
| OS.gdk_window_get_pointer (0, null, null, null); |
| } |
| } |
| } |
| |
| /* |
| * At this point, the event queue could |
| * be null due to a recursive invokation |
| * when running the event. |
| */ |
| } |
| |
| /* Clear the queue */ |
| eventQueue = null; |
| return true; |
| } |
| |
| /**
|
| * On platforms which support it, sets the application name
|
| * to be the argument. On Motif, for example, this can be used
|
| * to set the name used for resource lookup.
|
| *
|
| * @param name the new app name
|
| */ |
| public static void setAppName (String name) { |
| /* Do nothing - Gtk doesn't have the concept of application name. */ |
| } |
| |
| /**
|
| * Sets the location of the on-screen pointer relative to the top left corner
|
| * of the screen. <b>Note: It is typically considered bad practice for a
|
| * program to move the on-screen pointer location.</b>
|
| *
|
| * @param point new position
|
| * @since 2.0
|
| * @exception SWTException <ul>
|
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
|
| * <li>ERROR_NULL_ARGUMENT - if the point is null
|
| * </ul>
|
| */ |
| public void setCursorLocation (Point point) { |
| checkDevice (); |
| /* This is not supported on GTK */ |
| } |
| |
| /**
|
| * Sets the application defined property of the receiver
|
| * with the specified name to the given argument.
|
| * <p>
|
| * Applications may have associated arbitrary objects with the
|
| * receiver in this fashion. If the objects stored in the
|
| * properties need to be notified when the display is disposed
|
| * of, it is the application's responsibility provide a
|
| * <code>disposeExec()</code> handler which does so.
|
| * </p>
|
| *
|
| * @param key the name of the property
|
| * @param value the new value for the property
|
| *
|
| * @exception IllegalArgumentException <ul>
|
| * <li>ERROR_NULL_ARGUMENT - if the key is null</li>
|
| * </ul>
|
| * @exception SWTException <ul>
|
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
|
| * </ul>
|
| *
|
| * @see #setData
|
| * @see #disposeExec
|
| */ |
| public void setData (String key, Object value) { |
| checkDevice (); |
| if (key == null) error (SWT.ERROR_NULL_ARGUMENT); |
| |
| /* Remove the key/value pair */ |
| if (value == null) { |
| if (keys == null) return; |
| int index = 0; |
| while (index < keys.length && !keys [index].equals (key)) index++; |
| if (index == keys.length) return; |
| if (keys.length == 1) { |
| keys = null; |
| values = null; |
| } else { |
| String [] newKeys = new String [keys.length - 1]; |
| Object [] newValues = new Object [values.length - 1]; |
| System.arraycopy (keys, 0, newKeys, 0, index); |
| System.arraycopy (keys, index + 1, newKeys, index, newKeys.length - index); |
| System.arraycopy (values, 0, newValues, 0, index); |
| System.arraycopy (values, index + 1, newValues, index, newValues.length - index); |
| keys = newKeys; |
| values = newValues; |
| } |
| return; |
| } |
| |
| /* Add the key/value pair */ |
| if (keys == null) { |
| keys = new String [] {key}; |
| values = new Object [] {value}; |
| return; |
| } |
| for (int i=0; i<keys.length; i++) { |
| if (keys [i].equals (key)) { |
| values [i] = value; |
| return; |
| } |
| } |
| String [] newKeys = new String [keys.length + 1]; |
| Object [] newValues = new Object [values.length + 1]; |
| System.arraycopy (keys, 0, newKeys, 0, keys.length); |
| System.arraycopy (values, 0, newValues, 0, values.length); |
| newKeys [keys.length] = key; |
| newValues [values.length] = value; |
| keys = newKeys; |
| values = newValues; |
| } |
| |
| /**
|
| * Sets the application defined, display specific data
|
| * associated with the receiver, to the argument.
|
| * The <em>display specific data</em> is a single,
|
| * unnamed field that is stored with every display.
|
| * <p>
|
| * Applications may put arbitrary objects in this field. If
|
| * the object stored in the display specific data needs to
|
| * be notified when the display is disposed of, it is the
|
| * application's responsibility provide a
|
| * <code>disposeExec()</code> handler which does so.
|
| * </p>
|
| *
|
| * @param data the new display specific data
|
| *
|
| * @exception SWTException <ul>
|
| * <li>ERROR_THREAD_INVALID_ACCESS - when called from the wrong thread</li>
|
| * </ul>
|
| *
|
| * @see #getData
|
| * @see #disposeExec
|
| */ |
| public void setData (Object data) { |
| checkDevice (); |
| this.data = data; |
| } |
| |
| /**
|
| * Sets the synchronizer used by the display to be
|
| * the argument, which can not be null.
|
| *
|
| * @param synchronizer the new synchronizer for the display (must not be null)
|
| *
|
| * @exception IllegalArgumentException <ul>
|
| * <li>ERROR_NULL_ARGUMENT - if the synchronizer is null</li>
|
| * </ul>
|
| * @exception SWTException <ul>
|
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
|
| * </ul>
|
| */ |
| public void setSynchronizer (Synchronizer synchronizer) { |
| checkDevice (); |
| if (synchronizer == null) error (SWT.ERROR_NULL_ARGUMENT); |
| if (this.synchronizer != null) { |
| this.synchronizer.runAsyncMessages(); |
| } |
| this.synchronizer = synchronizer; |
| } |
| |
| /**
|
| * Causes the user-interface thread to <em>sleep</em> (that is,
|
| * to be put in a state where it does not consume CPU cycles)
|
| * until an event is received or it is otherwise awakened.
|
| *
|
| * @return <code>true</code> if an event requiring dispatching was placed on the queue.
|
| *
|
| * @exception SWTException <ul>
|
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
|
| * </ul>
|
| *
|
| * @see #wake
|
| */ |
| public boolean sleep () { |
| checkDevice (); |
| /* Temporary code - need to sleep waiting for the next message */ |
| try { Thread.sleep(50); } catch (Exception e) {}; |
| return true; |
| } |
| |
| /**
|
| * Causes the <code>run()</code> method of the runnable to
|
| * be invoked by the user-interface thread after the specified
|
| * number of milliseconds have elapsed. If milliseconds is less
|
| * than zero, the runnable is not executed.
|
| *
|
| * @param milliseconds the delay before running the runnable
|
| * @param runnable code to run on the user-interface thread
|
| *
|
| * @exception IllegalArgumentException <ul>
|
| * <li>ERROR_NULL_ARGUMENT - if the runnable is null</li>
|
| * </ul>
|
| * @exception SWTException <ul>
|
| * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
|
| * </ul>
|
| *
|
| * @see #asyncExec
|
| */ |
| public void timerExec (int milliseconds, Runnable runnable) { |
| checkDevice (); |
| if (runnable == null) error (SWT.ERROR_NULL_ARGUMENT); |
| if (timerList == null) timerList = new Runnable [4]; |
| if (timerIds == null) timerIds = new int [4]; |
| int index = 0; |
| while (index < timerList.length) { |
| if (timerList [index] == runnable) break; |
| index++; |
| } |
| if (index != timerList.length) { |
| OS.gtk_timeout_remove (timerIds [index]); |
| timerList [index] = null; |
| timerIds [index] = 0; |
| if (milliseconds < 0) return; |
| } else { |
| if (milliseconds < 0) return; |
| index = 0; |
| while (index < timerList.length) { |
| if (timerList [index] == null) break; |
| index++; |
| } |
| if (index == timerList.length) { |
| Runnable [] newTimerList = new Runnable [timerList.length + 4]; |
| System.arraycopy (timerList, 0, newTimerList, 0, timerList.length); |
| timerList = newTimerList; |
| int [] newTimerIds = new int [timerIds.length + 4]; |
| System.arraycopy (timerIds, 0, newTimerIds, 0, timerIds.length); |
| timerIds = newTimerIds; |
| } |
| } |
| int timerId = OS.gtk_timeout_add (milliseconds, timerProc, index); |
| if (timerId != 0) { |
| timerIds [index] = timerId; |
| timerList [index] = runnable; |
| } |
| } |
| |
| int timerProc (int index, int id) { |
| if (timerList == null) return 0; |
| if (0 <= index && index < timerList.length) { |
| Runnable runnable = timerList [index]; |
| timerList [index] = null; |
| timerIds [index] = 0; |
| if (runnable != null) runnable.run (); |
| } |
| return 0; |
| } |
| |
| int toggleProc (int rendererHandle, int int0, int int1) { |
| Widget widget = WidgetTable.get (int1); |
| if (widget == null) return 0; |
| return widget.processToggle (int0, int1); |
| } |
| |
| int caretProc (int clientData, int id) { |
| caretId = 0; |
| if (currentCaret == null) { |
| return 0; |
| } |
| if (currentCaret.blinkCaret()) { |
| int blinkRate = currentCaret.blinkRate; |
| caretId = OS.gtk_timeout_add (blinkRate, caretProc, 0); |
| } else { |
| currentCaret = null; |
| } |
| return 0; |
| } |
| |
| int selectionIterProc (int handle, int int0, int int1, int int2) { |
| Widget widget = WidgetTable.get (int2); |
| if (widget == null) return 0; |
| return widget.processSelectionIter (int0, int1, int2); |
| } |
| |
| void sendEvent (int eventType, Event event) { |
| if (eventTable == null) return; |
| if (event == null) event = new Event (); |
| event.display = this; |
| event.type = eventType; |
| if (event.time == 0) event.time = OS.gtk_get_current_event_time (); |
| eventTable.sendEvent (event); |
| } |
| |
| void setCurrentCaret (Caret caret) { |
| if (caretId != 0) OS.gtk_timeout_remove(caretId); |
| caretId = 0; |
| currentCaret = caret; |
| if (caret == null) return; |
| int blinkRate = currentCaret.blinkRate; |
| caretId = OS.gtk_timeout_add (blinkRate, caretProc, 0); |
| } |
| |
| /**
|
| * Causes the <code>run()</code> method of the runnable to
|
| * be invoked by the user-interface thread at the next
|
| * reasonable opportunity. The thread which calls this method
|
| * is suspended until the runnable completes.
|
| *
|
| * @param runnable code to run on the user-interface thread.
|
| *
|
| * @exception SWTException <ul>
|
| * <li>ERROR_FAILED_EXEC - if an exception occured when executing the runnable</li>
|
| * </ul>
|
| *
|
| * @see #asyncExec
|
| */ |
| public void syncExec (Runnable runnable) { |
| if (isDisposed ()) error (SWT.ERROR_DEVICE_DISPOSED); |
| synchronizer.syncExec (runnable); |
| } |
| |
| static int translateKey (int key) { |
| for (int i=0; i<KeyTable.length; i++) { |
| if (KeyTable [i] [0] == key) return KeyTable [i] [1]; |
| } |
| return 0; |
| } |
| |
| static int untranslateKey (int key) { |
| for (int i=0; i<KeyTable.length; i++) { |
| if (KeyTable [i] [1] == key) return KeyTable [i] [0]; |
| } |
| return 0; |
| } |
| |
| /**
|
| * Forces all outstanding paint requests for the display
|
| * to be processed before this method returns.
|
| *
|
| * @see Control#update
|
| */ |
| public void update () { |
| checkDevice (); |
| /* NOT IMPLEMENTED - Need to flush only pending draws */ |
| OS.gdk_flush (); |
| while ((OS.gtk_events_pending ()) != 0) { |
| OS.gtk_main_iteration (); |
| } |
| } |
| |
| /**
|
| * If the receiver's user-interface thread was <code>sleep</code>'ing,
|
| * causes it to be awakened and start running again. Note that this
|
| * method may be called from any thread.
|
| *
|
| * @see #sleep
|
| */ |
| public void wake () { |
| /* NOT IMPLEMENTED - Need to wake up the event loop */ |
| if (isDisposed ()) error (SWT.ERROR_DEVICE_DISPOSED); |
| if (thread == Thread.currentThread ()) return; |
| } |
| |
| int keyProc (int handle, int int0, int user_data) { |
| Widget widget = WidgetTable.get (user_data); |
| if (widget == null) return 0; |
| return widget.processIMEKey (int0); |
| } |
| |
| int windowProc (int handle, int user_data) { |
| Widget widget = WidgetTable.get (handle); |
| if (widget == null) return 0; |
| return widget.processEvent (user_data, 0, 0, 0); |
| } |
| |
| int windowProc (int handle, int int0, int user_data) { |
| Widget widget = WidgetTable.get (handle); |
| if (widget == null) return 0; |
| return widget.processEvent (user_data, int0, 0, 0); |
| } |
| |
| int windowProc (int handle, int int0, int int1, int user_data) { |
| Widget widget = WidgetTable.get (handle); |
| if (widget == null) return 0; |
| return widget.processEvent (user_data, int0, int1, 0); |
| } |
| |
| int windowProc (int handle, int int0, int int1, int int2, int user_data) { |
| Widget widget = WidgetTable.get (handle); |
| if (widget == null) return 0; |
| return widget.processEvent (user_data, int0, int1, int2); |
| } |
| |
| int windowTimerProc (int handle, int id) { |
| Widget widget = WidgetTable.get (handle); |
| if (widget == null) return 0; |
| return widget.processTimer (id); |
| } |
| |
| } |