diff options
Diffstat (limited to 'bundles/org.eclipse.swt/Eclipse SWT/photon/org/eclipse/swt/widgets/Tracker.java')
| -rwxr-xr-x | bundles/org.eclipse.swt/Eclipse SWT/photon/org/eclipse/swt/widgets/Tracker.java | 1057 |
1 files changed, 0 insertions, 1057 deletions
diff --git a/bundles/org.eclipse.swt/Eclipse SWT/photon/org/eclipse/swt/widgets/Tracker.java b/bundles/org.eclipse.swt/Eclipse SWT/photon/org/eclipse/swt/widgets/Tracker.java deleted file mode 100755 index 0ea5d78fdc..0000000000 --- a/bundles/org.eclipse.swt/Eclipse SWT/photon/org/eclipse/swt/widgets/Tracker.java +++ /dev/null @@ -1,1057 +0,0 @@ -/******************************************************************************* - * Copyright (c) 2000, 2009 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.widgets; - - -import org.eclipse.swt.internal.photon.*; -import org.eclipse.swt.graphics.*; -import org.eclipse.swt.*; -import org.eclipse.swt.events.*; - -/** - * Instances of this class implement rubber banding rectangles that are - * drawn onto a parent <code>Composite</code> or <code>Display</code>. - * These rectangles can be specified to respond to mouse and key events - * by either moving or resizing themselves accordingly. Trackers are - * typically used to represent window geometries in a lightweight manner. - * - * <dl> - * <dt><b>Styles:</b></dt> - * <dd>LEFT, RIGHT, UP, DOWN, RESIZE</dd> - * <dt><b>Events:</b></dt> - * <dd>Move, Resize</dd> - * </dl> - * <p> - * Note: Rectangle move behavior is assumed unless RESIZE is specified. - * </p><p> - * IMPORTANT: This class is <em>not</em> intended to be subclassed. - * </p> - * - * @see <a href="http://www.eclipse.org/swt/snippets/#tracker">Tracker snippets</a> - * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a> - * @noextend This class is not intended to be subclassed by clients. - */ -public class Tracker extends Widget { - Composite parent; - boolean tracking, stippled; - Rectangle [] rectangles = new Rectangle [0], proportions = rectangles; - Rectangle bounds; - int resizeCursor; - Cursor clientCursor; - int cursorOrientation = SWT.NONE; - - /* - * The following values mirror step sizes on Windows - */ - final static int STEPSIZE_SMALL = 1; - final static int STEPSIZE_LARGE = 9; - -/** - * Constructs a new instance of this class given the display - * to create it on and a style value describing its behavior - * and appearance. - * <p> - * The style value is either one of the style constants defined in - * class <code>SWT</code> which is applicable to instances of this - * class, or must be built by <em>bitwise OR</em>'ing together - * (that is, using the <code>int</code> "|" operator) two or more - * of those <code>SWT</code> style constants. The class description - * lists the style constants that are applicable to the class. - * Style bits are also inherited from superclasses. - * </p><p> - * Note: Currently, null can be passed in for the display argument. - * This has the effect of creating the tracker on the currently active - * display if there is one. If there is no current display, the - * tracker is created on a "default" display. <b>Passing in null as - * the display argument is not considered to be good coding style, - * and may not be supported in a future release of SWT.</b> - * </p> - * - * @param display the display to create the tracker on - * @param style the style of control to construct - * - * @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 SWT#LEFT - * @see SWT#RIGHT - * @see SWT#UP - * @see SWT#DOWN - * @see SWT#RESIZE - */ -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 = checkStyle (style); - this.display = display; -} - -/** - * Constructs a new instance of this class given its parent - * and a style value describing its behavior and appearance. - * <p> - * The style value is either one of the style constants defined in - * class <code>SWT</code> which is applicable to instances of this - * class, or must be built by <em>bitwise OR</em>'ing together - * (that is, using the <code>int</code> "|" operator) two or more - * of those <code>SWT</code> style constants. The class description - * lists the style constants that are applicable to the class. - * Style bits are also inherited from superclasses. - * </p> - * - * @param parent a widget which will be the parent of the new instance (cannot be null) - * @param style the style of widget to construct - * - * @exception IllegalArgumentException <ul> - * <li>ERROR_NULL_ARGUMENT - if the parent is null</li> - * </ul> - * @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 SWT#LEFT - * @see SWT#RIGHT - * @see SWT#UP - * @see SWT#DOWN - * @see SWT#RESIZE - * @see Widget#checkSubclass - * @see Widget#getStyle - */ -public Tracker (Composite parent, int style) { - super (parent, checkStyle (style)); - this.parent = parent; -} - -/** - * Adds the listener to the collection of listeners who will - * be notified when the control is moved or resized, by sending - * it one of the messages defined in the <code>ControlListener</code> - * interface. - * - * @param listener the listener which should be notified - * - * @exception IllegalArgumentException <ul> - * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> - * </ul> - * @exception SWTException <ul> - * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> - * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> - * </ul> - * - * @see ControlListener - * @see #removeControlListener - */ -public void addControlListener(ControlListener listener) { - checkWidget(); - if (listener == null) error (SWT.ERROR_NULL_ARGUMENT); - TypedListener typedListener = new TypedListener (listener); - addListener (SWT.Resize, typedListener); - addListener (SWT.Move, typedListener); -} - -/** - * Adds the listener to the collection of listeners who will - * be notified when keys are pressed and released on the system keyboard, by sending - * it one of the messages defined in the <code>KeyListener</code> - * interface. - * - * @param listener the listener which should be notified - * - * @exception IllegalArgumentException <ul> - * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> - * </ul> - * @exception SWTException <ul> - * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> - * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> - * </ul> - * - * @see KeyListener - * @see #removeKeyListener - */ -public void addKeyListener (KeyListener listener) { - checkWidget(); - if (listener == null) error (SWT.ERROR_NULL_ARGUMENT); - TypedListener typedListener = new TypedListener (listener); - addListener (SWT.KeyUp,typedListener); - addListener (SWT.KeyDown,typedListener); -} - -Point adjustMoveCursor () { - if (bounds == null) return null; - int newX = bounds.x + bounds.width / 2; - int newY = bounds.y; - /* - * Convert to screen coordinates iff needed - */ - if (parent != null) { - short [] x = new short [1], y = new short [1]; - OS.PtGetAbsPosition (parent.handle, x, y); - newX += x [0]; - newY += y [0]; - } - OS.PhMoveCursorAbs(OS.PhInputGroup (0), newX, newY); - return new Point (newX, newY); -} - -Point adjustResizeCursor () { - if (bounds == null) return null; - int newX, newY; - - if ((cursorOrientation & SWT.LEFT) != 0) { - newX = bounds.x; - } else if ((cursorOrientation & SWT.RIGHT) != 0) { - newX = bounds.x + bounds.width; - } else { - newX = bounds.x + bounds.width / 2; - } - - if ((cursorOrientation & SWT.UP) != 0) { - newY = bounds.y; - } else if ((cursorOrientation & SWT.DOWN) != 0) { - newY = bounds.y + bounds.height; - } else { - newY = bounds.y + bounds.height / 2; - } - - /* - * Convert to screen coordinates iff needed - */ - if (parent != null) { - short [] x = new short [1], y = new short [1]; - OS.PtGetAbsPosition (parent.handle, x, y); - newX += x [0]; - newY += y [0]; - } - OS.PhMoveCursorAbs(OS.PhInputGroup (0), newX, newY); - - /* - * If the client has not provided a custom cursor then determine - * the appropriate resize cursor. - */ - if (clientCursor == null) { - int newCursor = 0; - switch (cursorOrientation) { - case SWT.UP: - newCursor = OS.Ph_CURSOR_DRAG_TOP; - break; - case SWT.DOWN: - newCursor = OS.Ph_CURSOR_DRAG_BOTTOM; - break; - case SWT.LEFT: - newCursor = OS.Ph_CURSOR_DRAG_LEFT; - break; - case SWT.RIGHT: - newCursor = OS.Ph_CURSOR_DRAG_RIGHT; - break; - case SWT.LEFT | SWT.UP: - newCursor = OS.Ph_CURSOR_DRAG_TL; - break; - case SWT.RIGHT | SWT.DOWN: - newCursor = OS.Ph_CURSOR_DRAG_BR; - break; - case SWT.LEFT | SWT.DOWN: - newCursor = OS.Ph_CURSOR_DRAG_BL; - break; - case SWT.RIGHT | SWT.UP: - newCursor = OS.Ph_CURSOR_DRAG_TR; - break; - default: - newCursor = OS.Ph_CURSOR_MOVE; - break; - } - resizeCursor = newCursor; - } - - return new Point (newX, newY); -} - -static int checkStyle (int style) { - if ((style & (SWT.LEFT | SWT.RIGHT | SWT.UP | SWT.DOWN)) == 0) { - style |= SWT.LEFT | SWT.RIGHT | SWT.UP | SWT.DOWN; - } - return style; -} - -/** - * Stops displaying the tracker rectangles. Note that this is not considered - * to be a cancelation by the user. - * - * @exception SWTException <ul> - * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> - * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> - * </ul> - */ -public void close () { - checkWidget(); - tracking = false; -} - -Rectangle computeBounds () { - if (rectangles.length == 0) return null; - int xMin = rectangles [0].x; - int yMin = rectangles [0].y; - int xMax = rectangles [0].x + rectangles [0].width; - int yMax = rectangles [0].y + rectangles [0].height; - - for (int i = 1; i < rectangles.length; i++) { - if (rectangles [i].x < xMin) xMin = rectangles [i].x; - if (rectangles [i].y < yMin) yMin = rectangles [i].y; - int rectRight = rectangles [i].x + rectangles [i].width; - if (rectRight > xMax) xMax = rectRight; - int rectBottom = rectangles [i].y + rectangles [i].height; - if (rectBottom > yMax) yMax = rectBottom; - } - - return new Rectangle (xMin, yMin, xMax - xMin, yMax - yMin); -} - -Rectangle [] computeProportions (Rectangle [] rects) { - Rectangle [] result = new Rectangle [rects.length]; - bounds = computeBounds (); - if (bounds != null) { - for (int i = 0; i < rects.length; i++) { - int x = 0, y = 0, width = 0, height = 0; - if (bounds.width != 0) { - x = (rects [i].x - bounds.x) * 100 / bounds.width; - width = rects [i].width * 100 / bounds.width; - } else { - width = 100; - } - if (bounds.height != 0) { - y = (rects [i].y - bounds.y) * 100 / bounds.height; - height = rects [i].height * 100 / bounds.height; - } else { - height = 100; - } - result [i] = new Rectangle (x, y, width, height); - } - } - return result; -} - -void drawRectangles (Rectangle [] rects, boolean stippled) { - int rid = OS.Ph_DEV_RID; - if (parent != null) rid = OS.PtWidgetRid (parent.handle); - - int phGC = OS.PgCreateGC (0); - if (phGC == 0) return; - int prevContext = OS.PgSetGC (phGC); - OS.PgSetRegion (rid); - OS.PgSetDrawMode (OS.Pg_DrawModeDSx); - OS.PgSetFillColor (0xffffff); - - int bandWidth = 0; - if (stippled) { - bandWidth = 2; - OS.PgSetFillTransPat (OS.Pg_PAT_HALF); - } - for (int i=0; i<rects.length; i++) { - Rectangle r = rects [i]; - int x1 = r.x; - int y1 = r.y; - int x2 = r.x + r.width; - int y2 = r.y + r.height; - OS.PgDrawIRect(x1, y1, x2, y1 + bandWidth, OS.Pg_DRAW_FILL); - OS.PgDrawIRect(x1, y1 + bandWidth + 1, x1 + bandWidth, y2 - bandWidth - 1, OS.Pg_DRAW_FILL); - OS.PgDrawIRect(x2 - bandWidth, y1 + bandWidth + 1, x2, y2 - bandWidth - 1, OS.Pg_DRAW_FILL); - OS.PgDrawIRect(x1, y2 - bandWidth, x2, y2, OS.Pg_DRAW_FILL); - } - OS.PgSetGC (prevContext); - OS.PgDestroyGC (phGC); -} - -/** - * Returns the bounds that are being drawn, expressed relative to the parent - * widget. If the parent is a <code>Display</code> then these are screen - * coordinates. - * - * @return the bounds of the Rectangles being drawn - * - * @exception SWTException <ul> - * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> - * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> - * </ul> - */ -public Rectangle [] getRectangles () { - checkWidget(); - Rectangle [] result = new Rectangle [rectangles.length]; - for (int i = 0; i < rectangles.length; i++) { - Rectangle current = rectangles [i]; - result [i] = new Rectangle (current.x, current.y, current.width, current.height); - } - return result; -} - -/** - * Returns <code>true</code> if the rectangles are drawn with a stippled line, <code>false</code> otherwise. - * - * @return the stippled effect of the rectangles - * - * @exception SWTException <ul> - * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> - * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> - * </ul> - */ -public boolean getStippled () { - checkWidget(); - return stippled; -} - -void moveRectangles (int xChange, int yChange) { - if (bounds == null) return; - if (xChange < 0 && ((style & SWT.LEFT) == 0)) xChange = 0; - if (xChange > 0 && ((style & SWT.RIGHT) == 0)) xChange = 0; - if (yChange < 0 && ((style & SWT.UP) == 0)) yChange = 0; - if (yChange > 0 && ((style & SWT.DOWN) == 0)) yChange = 0; - if (xChange == 0 && yChange == 0) return; - bounds.x += xChange; bounds.y += yChange; - for (int i = 0; i < rectangles.length; i++) { - rectangles [i].x += xChange; - rectangles [i].y += yChange; - } -} - -/** - * Displays the Tracker rectangles for manipulation by the user. Returns when - * the user has either finished manipulating the rectangles or has cancelled the - * Tracker. - * - * @return <code>true</code> if the user did not cancel the Tracker, <code>false</code> otherwise - * - * @exception SWTException <ul> - * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> - * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> - * </ul> - */ -public boolean open () { - checkWidget(); - - int input_group = OS.PhInputGroup (0); - PhCursorInfo_t info = new PhCursorInfo_t (); - OS.PhQueryCursor ((short)input_group, info); - - if ((style & SWT.MENU) == 0) { - /* - * This code is intentionally commented. Tracking can happen through - * the keyboard. - */ -// if ((info.button_state & OS.Ph_BUTTON_SELECT) == 0) return false; - } - - int region = 0; - if (info.dragger == 0) { - PhRect_t rect = new PhRect_t (); - OS.PhWindowQueryVisible (OS.Ph_QUERY_CONSOLE, 0, OS.PhInputGroup (0), rect); - int sense = OS.Ph_EV_DRAG | OS.Ph_EV_KEY | OS.Ph_EV_BUT_PRESS | - OS.Ph_EV_BUT_RELEASE | OS.Ph_EV_PTR_MOTION; - int [] args = { - OS.Pt_ARG_WIDTH, rect.lr_x - rect.ul_x + 1, 0, - OS.Pt_ARG_HEIGHT, rect.lr_y - rect.ul_y + 1, 0, - OS.Pt_ARG_REGION_OPAQUE, 0, ~0, - OS.Pt_ARG_REGION_SENSE, sense, ~0, - OS.Pt_ARG_REGION_FLAGS, OS.Ph_FORCE_BOUNDARY, OS.Ph_FORCE_BOUNDARY, - OS.Pt_ARG_FILL_COLOR, OS.Pg_TRANSPARENT, 0, - }; - region = OS.PtCreateWidget (OS.PtRegion (), OS.Pt_NO_PARENT, args.length / 3, args); - OS.PtRealizeWidget (region); - - rect = new PhRect_t (); - int rid = OS.PtWidgetRid (region); - OS.PhInitDrag (rid, OS.Ph_DRAG_KEY_MOTION | OS.Ph_TRACK_DRAG, rect, null, input_group, null, null, null, null, null); - } - - int oldX = info.pos_x, oldY = info.pos_y; - int size = PhEvent_t.sizeof + 1024; - int buffer = OS.malloc (size); - PhEvent_t phEvent = new PhEvent_t (); - Event event = new Event (); - - // if exactly one of UP/DOWN is specified as a style then set the cursor - // orientation accordingly (the same is done for LEFT/RIGHT styles below) - int vStyle = style & (SWT.UP | SWT.DOWN); - if (vStyle == SWT.UP || vStyle == SWT.DOWN) { - cursorOrientation |= vStyle; - } - int hStyle = style & (SWT.LEFT | SWT.RIGHT); - if (hStyle == SWT.LEFT || hStyle == SWT.RIGHT) { - cursorOrientation |= hStyle; - } - - update (); - drawRectangles (rectangles, stippled); - Point cursorPos = null; - if ((style & SWT.MENU) == 0) { - oldX = info.pos_x; - oldY = info.pos_y; - } else { - if ((style & SWT.RESIZE) != 0) { - cursorPos = adjustResizeCursor (); - } else { - cursorPos = adjustMoveCursor (); - } - if (cursorPos != null) { - oldX = cursorPos.x; - oldY = cursorPos.y; - } - } - - tracking = true; - boolean cancelled = false; - while (tracking && !cancelled) { - if (parent != null && parent.isDisposed ()) break; - int result = OS.PhEventNext (buffer, size); - switch (result) { - case OS.Ph_EVENT_MSG: break; - case OS.Ph_RESIZE_MSG: - size = OS.PhGetMsgSize (buffer); - OS.free (buffer); - buffer = OS.malloc (size); - continue; - } - OS.memmove (phEvent, buffer, PhEvent_t.sizeof); - if (phEvent.type == OS.Ph_EV_DRAG) { - switch (phEvent.subtype) { - case OS.Ph_EV_DRAG_MOTION_EVENT: { - int data = OS.PhGetData (buffer); - if (data == 0) break; - PhPointerEvent_t pe = new PhPointerEvent_t (); - OS.memmove (pe, data, PhPointerEvent_t.sizeof); - int newX = pe.pos_x; - int newY = pe.pos_y; - if (newX != oldX || newY != oldY) { - Rectangle [] oldRectangles = rectangles; - boolean oldStippled = stippled; - Rectangle [] rectsToErase = new Rectangle [rectangles.length]; - for (int i = 0; i < rectangles.length; i++) { - Rectangle current = rectangles [i]; - rectsToErase [i] = new Rectangle (current.x, current.y, current.width, current.height); - } - event.x = newX; - event.y = newY; - if ((style & SWT.RESIZE) != 0) { - resizeRectangles (newX - oldX, newY - oldY); - sendEvent (SWT.Resize, event); - /* - * It is possible (but unlikely), that application - * code could have disposed the widget in the move - * event. If this happens, return false to indicate - * that the tracking has failed. - */ - if (isDisposed ()) { - cancelled = true; - break; - } - boolean draw = false; - /* - * It is possible that application code could have - * changed the rectangles in the resize event. If this - * happens then only redraw the tracker if the rectangle - * values have changed. - */ - if (rectangles != oldRectangles) { - int length = rectangles.length; - if (length != rectsToErase.length) { - draw = true; - } else { - for (int i = 0; i < length; i++) { - if (!rectangles [i].equals (rectsToErase [i])) { - draw = true; - break; - } - } - } - } else { - draw = true; - } - if (draw) { - drawRectangles (rectsToErase, oldStippled); - update (); - drawRectangles (rectangles, stippled); - } - cursorPos = adjustResizeCursor (); - if (cursorPos != null) { - newX = cursorPos.x; - newY = cursorPos.y; - } - } else { - moveRectangles (newX - oldX, newY - oldY); - sendEvent (SWT.Move, event); - /* - * It is possible (but unlikely), that application - * code could have disposed the widget in the move - * event. If this happens, return false to indicate - * that the tracking has failed. - */ - if (isDisposed ()) { - cancelled = true; - break; - } - boolean draw = false; - /* - * It is possible that application code could have - * changed the rectangles in the move event. If this - * happens then only redraw the tracker if the rectangle - * values have changed. - */ - if (rectangles != oldRectangles) { - int length = rectangles.length; - if (length != rectsToErase.length) { - draw = true; - } else { - for (int i = 0; i < length; i++) { - if (!rectangles [i].equals (rectsToErase [i])) { - draw = true; - break; - } - } - } - } else { - draw = true; - } - if (draw) { - drawRectangles (rectsToErase, oldStippled); - update (); - drawRectangles (rectangles, stippled); - } - } - oldX = newX; oldY = newY; - } - break; - } - case OS.Ph_EV_DRAG_KEY_EVENT: { - int data = OS.PhGetData (buffer); - if (data == 0) break; - PhKeyEvent_t ke = new PhKeyEvent_t (); - OS.memmove (ke, data, PhKeyEvent_t.sizeof); - if ((ke.key_flags & OS.Pk_KF_Sym_Valid) != 0) { - int stepSize = (ke.key_mods & OS.Pk_KM_Ctrl) != 0 ? STEPSIZE_SMALL : STEPSIZE_LARGE; - int xChange = 0, yChange = 0; - switch (ke.key_sym) { - case OS.Pk_Escape: - cancelled = true; - tracking = false; - break; - case OS.Pk_Return: - tracking = false; - break; - case OS.Pk_Left: - xChange = -stepSize; - break; - case OS.Pk_Right: - xChange = stepSize; - break; - case OS.Pk_Up: - yChange = -stepSize; - break; - case OS.Pk_Down: - yChange = stepSize; - break; - } - if (xChange != 0 || yChange != 0) { - Rectangle [] oldRectangles = rectangles; - boolean oldStippled = stippled; - Rectangle [] rectsToErase = new Rectangle [rectangles.length]; - for (int i = 0; i < rectangles.length; i++) { - Rectangle current = rectangles [i]; - rectsToErase [i] = new Rectangle (current.x, current.y, current.width, current.height); - } - int newX = oldX + xChange; - int newY = oldY + yChange; - event.x = newX; - event.y = newY; - if ((style & SWT.RESIZE) != 0) { - resizeRectangles (xChange, yChange); - sendEvent (SWT.Resize, event); - /* - * It is possible (but unlikely) that application - * code could have disposed the widget in the move - * event. If this happens return false to indicate - * that the tracking has failed. - */ - if (isDisposed ()) { - cancelled = true; - break; - } - boolean draw = false; - /* - * It is possible that application code could have - * changed the rectangles in the resize event. If this - * happens then only redraw the tracker if the rectangle - * values have changed. - */ - if (rectangles != oldRectangles) { - int length = rectangles.length; - if (length != rectsToErase.length) { - draw = true; - } else { - for (int i = 0; i < length; i++) { - if (!rectangles [i].equals (rectsToErase [i])) { - draw = true; - break; - } - } - } - } else { - draw = true; - } - if (draw) { - drawRectangles (rectsToErase, oldStippled); - update (); - drawRectangles (rectangles, stippled); - } - cursorPos = adjustResizeCursor (); - } else { - moveRectangles (xChange, yChange); - sendEvent (SWT.Move, event); - /* - * It is possible (but unlikely) that application - * code could have disposed the widget in the move - * event. If this happens return false to indicate - * that the tracking has failed. - */ - if (isDisposed ()) { - cancelled = true; - break; - } - boolean draw = false; - /* - * It is possible that application code could have - * changed the rectangles in the move event. If this - * happens then only redraw the tracker if the rectangle - * values have changed. - */ - if (rectangles != oldRectangles) { - int length = rectangles.length; - if (length != rectsToErase.length) { - draw = true; - } else { - for (int i = 0; i < length; i++) { - if (!rectangles [i].equals (rectsToErase [i])) { - draw = true; - break; - } - } - } - } else { - draw = true; - } - if (draw) { - drawRectangles (rectsToErase, oldStippled); - update (); - drawRectangles (rectangles, stippled); - } - cursorPos = adjustMoveCursor (); - } - if (cursorPos != null) { - oldX = cursorPos.x; - oldY = cursorPos.y; - } - } - } - break; - } - case OS.Ph_EV_DRAG_COMPLETE: { - tracking = false; - break; - } - } - if (phEvent.collector_handle != 0) { - setCursor (phEvent.collector_handle); - } - /* - * Don't dispatch mouse and key events in general, EXCEPT once this - * tracker has finished its work. - */ - if (tracking && !cancelled) continue; - - } - OS.PtEventHandler (buffer); - } - OS.free (buffer); - if (!isDisposed ()) { - update (); - drawRectangles (rectangles, stippled); - } - tracking = false; - if (region != 0) OS.PtDestroyWidget (region); - return !cancelled; -} - -void releaseWidget () { - super.releaseWidget (); - parent = null; - rectangles = proportions = null; - bounds = null; -} - -/** - * Removes the listener from the collection of listeners who will - * be notified when the control is moved or resized. - * - * @param listener the listener which should no longer be notified - * - * @exception IllegalArgumentException <ul> - * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> - * </ul> - * @exception SWTException <ul> - * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> - * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> - * </ul> - * - * @see ControlListener - * @see #addControlListener - */ -public void removeControlListener (ControlListener listener) { - checkWidget(); - if (listener == null) error (SWT.ERROR_NULL_ARGUMENT); - if (eventTable == null) return; - eventTable.unhook (SWT.Resize, listener); - eventTable.unhook (SWT.Move, listener); -} - -/** - * Removes the listener from the collection of listeners who will - * be notified when keys are pressed and released on the system keyboard. - * - * @param listener the listener which should no longer be notified - * - * @exception IllegalArgumentException <ul> - * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> - * </ul> - * @exception SWTException <ul> - * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> - * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> - * </ul> - * - * @see KeyListener - * @see #addKeyListener - */ -public void removeKeyListener(KeyListener listener) { - checkWidget(); - if (listener == null) error (SWT.ERROR_NULL_ARGUMENT); - if (eventTable == null) return; - eventTable.unhook (SWT.KeyUp, listener); - eventTable.unhook (SWT.KeyDown, listener); -} - -void resizeRectangles (int xChange, int yChange) { - if (bounds == null) return; - /* - * If the cursor orientation has not been set in the orientation of - * this change then try to set it here. - */ - if (xChange < 0 && ((style & SWT.LEFT) != 0) && ((cursorOrientation & SWT.RIGHT) == 0)) { - cursorOrientation |= SWT.LEFT; - } - if (xChange > 0 && ((style & SWT.RIGHT) != 0) && ((cursorOrientation & SWT.LEFT) == 0)) { - cursorOrientation |= SWT.RIGHT; - } - if (yChange < 0 && ((style & SWT.UP) != 0) && ((cursorOrientation & SWT.DOWN) == 0)) { - cursorOrientation |= SWT.UP; - } - if (yChange > 0 && ((style & SWT.DOWN) != 0) && ((cursorOrientation & SWT.UP) == 0)) { - cursorOrientation |= SWT.DOWN; - } - - /* - * If the bounds will flip about the x or y axis then apply the adjustment - * up to the axis (ie.- where bounds width/height becomes 0), change the - * cursor's orientation accordingly, and flip each Rectangle's origin (only - * necessary for > 1 Rectangles) - */ - if ((cursorOrientation & SWT.LEFT) != 0) { - if (xChange > bounds.width) { - if ((style & SWT.RIGHT) == 0) return; - cursorOrientation |= SWT.RIGHT; - cursorOrientation &= ~SWT.LEFT; - bounds.x += bounds.width; - xChange -= bounds.width; - bounds.width = 0; - if (proportions.length > 1) { - for (int i = 0; i < proportions.length; i++) { - Rectangle proportion = proportions [i]; - proportion.x = 100 - proportion.x - proportion.width; - } - } - } - } else if ((cursorOrientation & SWT.RIGHT) != 0) { - if (bounds.width < -xChange) { - if ((style & SWT.LEFT) == 0) return; - cursorOrientation |= SWT.LEFT; - cursorOrientation &= ~SWT.RIGHT; - xChange += bounds.width; - bounds.width = 0; - if (proportions.length > 1) { - for (int i = 0; i < proportions.length; i++) { - Rectangle proportion = proportions [i]; - proportion.x = 100 - proportion.x - proportion.width; - } - } - } - } - if ((cursorOrientation & SWT.UP) != 0) { - if (yChange > bounds.height) { - if ((style & SWT.DOWN) == 0) return; - cursorOrientation |= SWT.DOWN; - cursorOrientation &= ~SWT.UP; - bounds.y += bounds.height; - yChange -= bounds.height; - bounds.height = 0; - if (proportions.length > 1) { - for (int i = 0; i < proportions.length; i++) { - Rectangle proportion = proportions [i]; - proportion.y = 100 - proportion.y - proportion.height; - } - } - } - } else if ((cursorOrientation & SWT.DOWN) != 0) { - if (bounds.height < -yChange) { - if ((style & SWT.UP) == 0) return; - cursorOrientation |= SWT.UP; - cursorOrientation &= ~SWT.DOWN; - yChange += bounds.height; - bounds.height = 0; - if (proportions.length > 1) { - for (int i = 0; i < proportions.length; i++) { - Rectangle proportion = proportions [i]; - proportion.y = 100 - proportion.y - proportion.height; - } - } - } - } - - // apply the bounds adjustment - if ((cursorOrientation & SWT.LEFT) != 0) { - bounds.x += xChange; - bounds.width -= xChange; - } else if ((cursorOrientation & SWT.RIGHT) != 0) { - bounds.width += xChange; - } - if ((cursorOrientation & SWT.UP) != 0) { - bounds.y += yChange; - bounds.height -= yChange; - } else if ((cursorOrientation & SWT.DOWN) != 0) { - bounds.height += yChange; - } - - Rectangle [] newRects = new Rectangle [rectangles.length]; - for (int i = 0; i < rectangles.length; i++) { - Rectangle proportion = proportions[i]; - newRects[i] = new Rectangle ( - proportion.x * bounds.width / 100 + bounds.x, - proportion.y * bounds.height / 100 + bounds.y, - proportion.width * bounds.width / 100, - proportion.height * bounds.height / 100); - } - rectangles = newRects; -} - -/** - * Sets the <code>Cursor</code> of the Tracker. If this cursor is <code>null</code> - * then the cursor reverts to the default. - * - * @param newCursor the new <code>Cursor</code> to display - * - * @exception SWTException <ul> - * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> - * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> - * </ul> - */ -public void setCursor (Cursor cursor) { - checkWidget(); - if (cursor != null && cursor.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT); - clientCursor = cursor; -} - -void setCursor (int cursorHandle) { - if (cursorHandle == 0) return; - int type = 0; - int bitmap = 0; - if (clientCursor != null) { - type = clientCursor.type; - bitmap = clientCursor.bitmap; - } else if (resizeCursor != 0) { - type = resizeCursor; - } - int [] args = new int []{ - OS.Pt_ARG_CURSOR_TYPE, type, 0, - OS.Pt_ARG_BITMAP_CURSOR, bitmap, 0, - }; - OS.PtSetResources (cursorHandle, args.length / 3, args); - - /* - * Bug in Photon. For some reason, the widget cursor will - * not change, when the new cursor is a bitmap cursor, if - * the flag Ph_CURSOR_NO_INHERIT is reset. The fix is to reset - * this flag after changing the cursor type to Ph_CURSOR_BITMAP. - */ - if (type == OS.Ph_CURSOR_BITMAP) { - type &= ~OS.Ph_CURSOR_NO_INHERIT; - OS.PtSetResource (cursorHandle, OS.Pt_ARG_CURSOR_TYPE, type, 0); - } -} - -/** - * Specifies the rectangles that should be drawn, expressed relative to the parent - * widget. If the parent is a Display then these are screen coordinates. - * - * @param rectangles the bounds of the rectangles to be drawn - * - * @exception IllegalArgumentException <ul> - * <li>ERROR_NULL_ARGUMENT - if the set of rectangles is null or contains a null rectangle</li> - * </ul> - * @exception SWTException <ul> - * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> - * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> - * </ul> - */ -public void setRectangles (Rectangle [] rectangles) { - checkWidget(); - if (rectangles == null) error (SWT.ERROR_NULL_ARGUMENT); - this.rectangles = new Rectangle [rectangles.length]; - for (int i = 0; i < rectangles.length; i++) { - Rectangle current = rectangles [i]; - if (current == null) error (SWT.ERROR_NULL_ARGUMENT); - this.rectangles [i] = new Rectangle (current.x, current.y, current.width, current.height); - } - proportions = computeProportions (rectangles); -} - -/** - * Changes the appearance of the line used to draw the rectangles. - * - * @param stippled <code>true</code> if rectangle should appear stippled - * - * @exception SWTException <ul> - * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> - * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> - * </ul> - */ -public void setStippled (boolean stippled) { - checkWidget(); - this.stippled = stippled; -} - -void update () { - if (parent != null) { - if (parent.isDisposed ()) return; - parent.getShell ().update (); - } else { - display.update (); - } -} -} |