diff options
Diffstat (limited to 'bundles/org.eclipse.swt/Eclipse SWT/motif/org/eclipse/swt/widgets/Tracker.java')
| -rwxr-xr-x | bundles/org.eclipse.swt/Eclipse SWT/motif/org/eclipse/swt/widgets/Tracker.java | 193 |
1 files changed, 193 insertions, 0 deletions
diff --git a/bundles/org.eclipse.swt/Eclipse SWT/motif/org/eclipse/swt/widgets/Tracker.java b/bundles/org.eclipse.swt/Eclipse SWT/motif/org/eclipse/swt/widgets/Tracker.java new file mode 100755 index 0000000000..3f8db147f9 --- /dev/null +++ b/bundles/org.eclipse.swt/Eclipse SWT/motif/org/eclipse/swt/widgets/Tracker.java @@ -0,0 +1,193 @@ +package org.eclipse.swt.widgets;
+
+/*
+* Licensed Materials - Property of IBM,
+* SWT - The Simple Widget Toolkit,
+* (c) Copyright IBM Corp 1998, 1999.
+*/
+
+/* Imports */
+import org.eclipse.swt.internal.motif.*;
+import org.eclipse.swt.graphics.*;
+import org.eclipse.swt.*;
+import org.eclipse.swt.events.*;
+
+/**
+*/
+
+/* Class Definition */
+public /*final*/ class Tracker extends Widget {
+ Composite parent;
+ Display display;
+ boolean tracking, stippled;
+ Rectangle [] rectangles = new Rectangle [0];
+/**
+* Creates a new instance of the widget.
+*/
+public Tracker (Composite parent, int style) {
+ super (parent, style);
+ this.parent = parent;
+ display = parent.getDisplay ();
+}
+/**
+* Creates a new instance of the widget.
+*/
+public Tracker (Display display, int style) {
+ if (display == null) display = Display.getCurrent ();
+ if (display == null) display = Display.getDefault ();
+ if (!display.isValidThread ()) {
+ error (SWT.ERROR_THREAD_INVALID_ACCESS);
+ }
+ this.style = style;
+ this.display = display;
+}
+/**
+* Adds the listener to receive events.
+* <p>
+*
+* @param listener the listener
+*
+* @exception SWTError(ERROR_THREAD_INVALID_ACCESS)
+* when called from the wrong thread
+* @exception SWTError(ERROR_WIDGET_DISPOSED)
+* when the widget has been disposed
+* @exception SWTError(ERROR_NULL_ARGUMENT)
+* when listener is null
+*/
+public void addControlListener(ControlListener listener) {
+ if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
+ if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
+ if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
+ TypedListener typedListener = new TypedListener (listener);
+ addListener (SWT.Move,typedListener);
+}
+public void close () {
+ tracking = false;
+}
+void drawRectangles () {
+ if (parent != null) {
+ if (parent.isDisposed ()) return;
+ parent.getShell ().update ();
+ } else {
+ display.update ();
+ }
+ int xDisplay = display.xDisplay;
+ int color = OS.XWhitePixel (xDisplay, 0);
+ int xWindow = OS.XDefaultRootWindow (xDisplay);
+ if (parent != null) {
+ xWindow = OS.XtWindow (parent.handle);
+ if (xWindow == 0) return;
+ int [] argList = {OS.XmNforeground, 0, OS.XmNbackground, 0};
+ OS.XtGetValues (parent.handle, argList, argList.length / 2);
+ color = argList [1] ^ argList [3];
+ }
+ int gc = OS.XCreateGC (xDisplay, xWindow, 0, null);
+ OS.XSetForeground (xDisplay, gc, color);
+ OS.XSetSubwindowMode (xDisplay, gc, OS.IncludeInferiors);
+ OS.XSetFunction (xDisplay, gc, OS.GXxor);
+ int stipplePixmap = 0;
+ if (stippled) {
+ byte [] bits = {-86, 0, 85, 0, -86, 0, 85, 0, -86, 0, 85, 0, -86, 0, 85, 0};
+ stipplePixmap = OS.XCreateBitmapFromData (xDisplay, xWindow, bits, 8, 8);
+ OS.XSetStipple (xDisplay, gc, stipplePixmap);
+ OS.XSetFillStyle (xDisplay, gc, OS.FillStippled);
+ OS.XSetLineAttributes (xDisplay, gc, 3, OS.LineSolid, OS.CapButt, OS.JoinMiter);
+ }
+ for (int i=0; i<rectangles.length; i++) {
+ Rectangle rect = rectangles [i];
+ OS.XDrawRectangle (xDisplay, xWindow, gc, rect.x, rect.y, rect.width, rect.height);
+ }
+ if (stippled) {
+ OS.XFreePixmap (xDisplay, stipplePixmap);
+ }
+ OS.XFreeGC (xDisplay, gc);
+}
+public Display getDisplay () {
+ return display;
+}
+public Rectangle [] getRectangles () {
+ return rectangles;
+}
+public boolean getStippled () {
+ return stippled;
+}
+public boolean open () {
+ int xDisplay = display.xDisplay;
+ int color = OS.XWhitePixel (xDisplay, 0);
+ int xWindow = OS.XDefaultRootWindow (xDisplay);
+ if (parent != null) {
+ xWindow = OS.XtWindow (parent.handle);
+ if (xWindow == 0) return false;
+ }
+ boolean cancelled = false;
+ tracking = true;
+ drawRectangles ();
+ Event event = new Event ();
+ XAnyEvent xEvent = new XAnyEvent ();
+ int [] unused = new int [1];
+ int [] newX = new int [1], newY = new int [1], oldX = new int [1], oldY = new int [1];
+ int xtContext = OS.XtDisplayToApplicationContext (xDisplay);
+ OS.XQueryPointer (xDisplay, xWindow, unused, unused, oldX, oldY, unused, unused, unused);
+ while (tracking) {
+ if (parent != null && parent.isDisposed ()) break;
+ OS.XtAppNextEvent (xtContext, xEvent);
+ switch (xEvent.type) {
+ case OS.ButtonRelease:
+ case OS.MotionNotify:
+ OS.XQueryPointer (xDisplay, xWindow, unused, unused, newX, newY, unused, unused, unused);
+ if (oldX [0] != newX [0] || oldY [0] != newY [0]) {
+ drawRectangles ();
+ for (int i=0; i<rectangles.length; i++) {
+ rectangles [i].x += newX [0] - oldX [0];
+ rectangles [i].y += newY [0] - oldY [0];
+ }
+ sendEvent (SWT.Move);
+ drawRectangles ();
+ oldX [0] = newX [0]; oldY [0] = newY [0];
+ }
+ tracking = xEvent.type != OS.ButtonRelease;
+ break;
+ case OS.KeyPress:
+ XKeyEvent keyEvent = new XKeyEvent ();
+ OS.memmove (keyEvent, xEvent, XKeyEvent.sizeof);
+ if (keyEvent.keycode != 0) {
+ int [] keysym = new int [1];
+ OS.XLookupString (keyEvent, null, 0, keysym, unused);
+ keysym [0] &= 0xFFFF;
+ tracking = keysym [0] != OS.XK_Escape && keysym [0] != OS.XK_Cancel;
+ cancelled = !tracking;
+ }
+ break;
+ }
+ }
+ drawRectangles ();
+ tracking = false;
+ return !cancelled;
+}
+/**
+* Removes the listener.
+* <p>
+*
+* @param listener the listener
+*
+* @exception SWTError(ERROR_THREAD_INVALID_ACCESS)
+* when called from the wrong thread
+* @exception SWTError(ERROR_WIDGET_DISPOSED)
+* when the widget has been disposed
+* @exception SWTError(ERROR_NULL_ARGUMENT)
+* when listener is null
+*/
+public void removeControlListener (ControlListener listener) {
+ if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
+ if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
+ if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
+ if (eventTable == null) return;
+ eventTable.unhook (SWT.Move, listener);
+}
+public void setRectangles (Rectangle [] rectangles) {
+ this.rectangles = rectangles;
+}
+public void setStippled (boolean stippled) {
+ this.stippled = stippled;
+}
+}
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