bundles/org.eclipse.swt/Eclipse SWT/photon/org/eclipse/swt/widgets/Sash.java - platform/eclipse.platform.swt - Git at Google

 package org.eclipse.swt.widgets;

 /*
  * (c) Copyright IBM Corp. 2000, 2001.
  * All Rights Reserved
  */

 import org.eclipse.swt.internal.photon.*;
 import org.eclipse.swt.*;
 import org.eclipse.swt.graphics.*;
 import org.eclipse.swt.events.*;

 public class Sash extends Control {
 	boolean dragging;
 	int startX, startY, lastX, lastY;

 public Sash (Composite parent, int style) {
 	super (parent, checkStyle (style));
 }

 static int checkStyle (int style) {
 	return checkBits (style, SWT.HORIZONTAL, SWT.VERTICAL, 0, 0, 0, 0);
 }

 public void addSelectionListener (SelectionListener listener) {
 	checkWidget();
 	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
 	TypedListener typedListener = new TypedListener (listener);
 	addListener (SWT.Selection,typedListener);
 	addListener (SWT.DefaultSelection,typedListener);
 }

 public Point computeSize (int wHint, int hHint, boolean changed) {
 	checkWidget();
 	int border = getBorderWidth ();
 	int width = border * 2, height = border * 2;
 	if ((style & SWT.HORIZONTAL) != 0) {
 		width += DEFAULT_WIDTH;  height += 3;
 	} else {
 		width += 3; height += DEFAULT_HEIGHT;
 	}
 	if (wHint != SWT.DEFAULT) width = wHint + (border * 2);
 	if (hHint != SWT.DEFAULT) height = hHint + (border * 2);
 	return new Point (width, height);
 }

 void createHandle (int index) {
 	state |= HANDLE;
 	Display display = getDisplay ();
 	int clazz = display.PtContainer;
 	int parentHandle = parent.handle;
 	int cursor = ((style & SWT.HORIZONTAL) != 0) ? OS.Ph_CURSOR_DRAG_VERTICAL : OS.Ph_CURSOR_DRAG_HORIZONTAL;
 	int [] args = {
 		OS.Pt_ARG_CURSOR_TYPE, cursor, 0,
 		OS.Pt_ARG_RESIZE_FLAGS, 0, OS.Pt_RESIZE_XY_BITS,
 	};
 	handle = OS.PtCreateWidget (clazz, parentHandle, args.length / 3, args);
 	if (handle == 0) error (SWT.ERROR_NO_HANDLES);
 }

 void drawBand (int x, int y, int width, int height) {
 	if (parent == null) return;
 	if (parent.isDisposed ()) return;
 	int parentHandle = parent.handle;
 	if (!OS.PtWidgetIsRealized (parentHandle)) return;
 	int phGC = OS.PgCreateGC (0); // NOTE: PgCreateGC ignores the parameter
 	if (phGC == 0) return;
 	int [] args = {OS.Pt_ARG_COLOR, 0, 0, OS.Pt_ARG_FILL_COLOR, 0, 0};
 	OS.PtGetResources (handle, args.length / 3, args);
 	int foreground = args [1];
 	int background = args [4];
 	int color = foreground ^ ~background;
 	int prevContext = OS.PgSetGC (phGC);
 	OS.PgSetRegion (OS.PtWidgetRid (parentHandle));
 	OS.PgSetDrawMode (OS.Pg_DRAWMODE_XOR);
 	OS.PgSetFillColor (color);
 	OS.PgDrawIRect (x, y, x + width - 1, y + height - 1, OS.Pg_DRAW_FILL);
 	OS.PgSetGC (prevContext);
 	OS.PgDestroyGC (phGC);
 }

 void hookEvents () {
 	super.hookEvents ();
 	int windowProc = getDisplay ().windowProc;
 	OS.PtAddEventHandler (handle, OS.Ph_EV_DRAG, windowProc, SWT.MouseMove);
 }

 int processMouse (int info) {
 	int result = super.processMouse (info);

 	if (info == 0) return OS.Pt_END;
 	PtCallbackInfo_t cbinfo = new PtCallbackInfo_t ();
 	OS.memmove (cbinfo, info, PtCallbackInfo_t.sizeof);
 	if (cbinfo.event == 0) return OS.Pt_END;
 	PhEvent_t ev = new PhEvent_t ();
 	OS.memmove (ev, cbinfo.event, PhEvent_t.sizeof);
 	int data = OS.PhGetData (cbinfo.event);
 	if (data == 0) return OS.Pt_END;
 	PhPointerEvent_t pe = new PhPointerEvent_t ();
 	OS.memmove (pe, data, PhPointerEvent_t.sizeof);
 	if (pe.buttons != OS.Ph_BUTTON_SELECT) return result;

 	int x = pe.pos_x + ev.translation_x;
 	int y = pe.pos_y + ev.translation_y;
 	PhArea_t area = new PhArea_t();
 	OS.PtWidgetArea (handle, area);
 	Event event = new Event ();
 	int width = event.width = area.size_w;
 	int height = event.height = area.size_h;
 	switch (ev.type) {
 		case OS.Ph_EV_BUT_PRESS:
 			PhRect_t rect = new PhRect_t ();
 			PhPoint_t pos = new PhPoint_t();
 			pos.x = pe.pos_x;
 			pos.y = pe.pos_y;
 			rect.ul_x = rect.lr_x = (short) (pos.x + ev.translation_x);
 			rect.ul_y = rect.lr_y = (short) (pos.y + ev.translation_y);
 			int rid = OS.PtWidgetRid (handle);
 //			int input_group = OS.PhInputGroup (cbinfo.event);
 			int input_group = OS.PhInputGroup (0);
 			OS.PhInitDrag (rid, OS.Ph_DRAG_KEY_MOTION | OS.Ph_DRAG_TRACK | OS.Ph_TRACK_DRAG, rect, null, input_group, null, null, null, pos, null);

 			/* Compute the banding rectangle */
 			startX = x;
 			startY = y;
 			lastX = area.pos_x;
 			lastY = area.pos_y;

 			/* The event must be sent because doit flag is used */
 			event.x = lastX;  event.y = lastY;
 			event.detail = SWT.DRAG;

 			/*
 			* It is possible (but unlikely), that application
 			* code could have disposed the widget in the selection
 			* event.  If this happens, end the processing of the
 			* Windows message by returning zero as the result of
 			* the window proc.
 			*/
 			sendEvent (SWT.Selection, event);
 			if (isDisposed ()) return OS.Pt_END;

 			/* Draw the banding rectangle */
 			if (event.doit) {
 				dragging = true;
 				menuShell ().bringToTop ();
 				OS.PtFlush ();
 				drawBand (lastX = event.x, lastY = event.y, width, height);
 			}
 			break;
 		case OS.Ph_EV_BUT_RELEASE:
 			if (ev.subtype != OS.Ph_EV_RELEASE_PHANTOM) {
 				return result;
 			}
 			/* Compute the banding rectangle */
 			if (!dragging) return result;
 			dragging = false;

 			/* The event must be sent because doit flag is used */
 			event.x = lastX;  event.y = lastY;
 			drawBand (lastX, lastY, width, height);
 			sendEvent (SWT.Selection, event);
 			// widget could be disposed at this point
 			break;
 		case OS.Ph_EV_PTR_MOTION_BUTTON:
 		case OS.Ph_EV_PTR_MOTION_NOBUTTON:
 		case OS.Ph_EV_DRAG:
 			if (ev.subtype != OS.Ph_EV_DRAG_MOTION_EVENT) {
 				return result;
 			}
 			if (!dragging) return result;

 			/* Compute the banding rectangle */
 			x += area.pos_x;
 			y += area.pos_y;
 			Rectangle r = parent.getClientArea ();
 			int clientWidth = r.width;
 			int clientHeight = r.height;
 			int newX = lastX, newY = lastY;
 			if ((style & SWT.VERTICAL) != 0) {
 				newX = Math.min (Math.max (0, x - startX), clientWidth - width);
 			} else {
 				newY = Math.min (Math.max (0, y - startY), clientHeight - height);
 			}
 			if ((newX == lastX) && (newY == lastY)) return result;
 			drawBand (lastX, lastY, width, height);

 			/* The event must be sent because doit flag is used */
 			event.x = newX;  event.y = newY;
 			event.detail = SWT.DRAG;

 			/*
 			* It is possible (but unlikely), that application
 			* code could have disposed the widget in the selection
 			* event.  If this happens, end the processing of the
 			* Windows message by returning zero as the result of
 			* the window proc.
 			*/
 			sendEvent (SWT.Selection, event);
 			if (isDisposed ()) return OS.Pt_END;

 			/* Draw the banding rectangle */
 			if (event.doit) {
 				lastX = event.x; lastY = event.y;
 				OS.PtFlush ();
 				drawBand (lastX, lastY, width, height);
 			}
 			break;
 	}
 	return result;
 }

 int processPaint (int damage) {
 	OS.PtSuperClassDraw (OS.PtContainer (), handle, damage);
 	sendPaintEvent (damage);
 	return OS.Pt_CONTINUE;
 }
 public void removeSelectionListener(SelectionListener listener) {
 	checkWidget();
 	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
 	if (eventTable == null) return;
 	eventTable.unhook (SWT.Selection, listener);
 	eventTable.unhook (SWT.DefaultSelection,listener);
 }

 }
	package org.eclipse.swt.widgets;

	/*
	* (c) Copyright IBM Corp. 2000, 2001.
	* All Rights Reserved
	*/

	import org.eclipse.swt.internal.photon.*;
	import org.eclipse.swt.*;
	import org.eclipse.swt.graphics.*;
	import org.eclipse.swt.events.*;

	public class Sash extends Control {
	boolean dragging;
	int startX, startY, lastX, lastY;

	public Sash (Composite parent, int style) {
	super (parent, checkStyle (style));
	}

	static int checkStyle (int style) {
	return checkBits (style, SWT.HORIZONTAL, SWT.VERTICAL, 0, 0, 0, 0);
	}

	public void addSelectionListener (SelectionListener listener) {
	checkWidget();
	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
	TypedListener typedListener = new TypedListener (listener);
	addListener (SWT.Selection,typedListener);
	addListener (SWT.DefaultSelection,typedListener);
	}

	public Point computeSize (int wHint, int hHint, boolean changed) {
	checkWidget();
	int border = getBorderWidth ();
	int width = border * 2, height = border * 2;
	if ((style & SWT.HORIZONTAL) != 0) {
	width += DEFAULT_WIDTH; height += 3;
	} else {
	width += 3; height += DEFAULT_HEIGHT;
	}
	if (wHint != SWT.DEFAULT) width = wHint + (border * 2);
	if (hHint != SWT.DEFAULT) height = hHint + (border * 2);
	return new Point (width, height);
	}

	void createHandle (int index) {
	state \|= HANDLE;
	Display display = getDisplay ();
	int clazz = display.PtContainer;
	int parentHandle = parent.handle;
	int cursor = ((style & SWT.HORIZONTAL) != 0) ? OS.Ph_CURSOR_DRAG_VERTICAL : OS.Ph_CURSOR_DRAG_HORIZONTAL;
	int [] args = {
	OS.Pt_ARG_CURSOR_TYPE, cursor, 0,
	OS.Pt_ARG_RESIZE_FLAGS, 0, OS.Pt_RESIZE_XY_BITS,
	};
	handle = OS.PtCreateWidget (clazz, parentHandle, args.length / 3, args);
	if (handle == 0) error (SWT.ERROR_NO_HANDLES);
	}

	void drawBand (int x, int y, int width, int height) {
	if (parent == null) return;
	if (parent.isDisposed ()) return;
	int parentHandle = parent.handle;
	if (!OS.PtWidgetIsRealized (parentHandle)) return;
	int phGC = OS.PgCreateGC (0); // NOTE: PgCreateGC ignores the parameter
	if (phGC == 0) return;
	int [] args = {OS.Pt_ARG_COLOR, 0, 0, OS.Pt_ARG_FILL_COLOR, 0, 0};
	OS.PtGetResources (handle, args.length / 3, args);
	int foreground = args [1];
	int background = args [4];
	int color = foreground ^ ~background;
	int prevContext = OS.PgSetGC (phGC);
	OS.PgSetRegion (OS.PtWidgetRid (parentHandle));
	OS.PgSetDrawMode (OS.Pg_DRAWMODE_XOR);
	OS.PgSetFillColor (color);
	OS.PgDrawIRect (x, y, x + width - 1, y + height - 1, OS.Pg_DRAW_FILL);
	OS.PgSetGC (prevContext);
	OS.PgDestroyGC (phGC);
	}

	void hookEvents () {
	super.hookEvents ();
	int windowProc = getDisplay ().windowProc;
	OS.PtAddEventHandler (handle, OS.Ph_EV_DRAG, windowProc, SWT.MouseMove);
	}

	int processMouse (int info) {
	int result = super.processMouse (info);

	if (info == 0) return OS.Pt_END;
	PtCallbackInfo_t cbinfo = new PtCallbackInfo_t ();
	OS.memmove (cbinfo, info, PtCallbackInfo_t.sizeof);
	if (cbinfo.event == 0) return OS.Pt_END;
	PhEvent_t ev = new PhEvent_t ();
	OS.memmove (ev, cbinfo.event, PhEvent_t.sizeof);
	int data = OS.PhGetData (cbinfo.event);
	if (data == 0) return OS.Pt_END;
	PhPointerEvent_t pe = new PhPointerEvent_t ();
	OS.memmove (pe, data, PhPointerEvent_t.sizeof);
	if (pe.buttons != OS.Ph_BUTTON_SELECT) return result;

	int x = pe.pos_x + ev.translation_x;
	int y = pe.pos_y + ev.translation_y;
	PhArea_t area = new PhArea_t();
	OS.PtWidgetArea (handle, area);
	Event event = new Event ();
	int width = event.width = area.size_w;
	int height = event.height = area.size_h;
	switch (ev.type) {
	case OS.Ph_EV_BUT_PRESS:
	PhRect_t rect = new PhRect_t ();
	PhPoint_t pos = new PhPoint_t();
	pos.x = pe.pos_x;
	pos.y = pe.pos_y;
	rect.ul_x = rect.lr_x = (short) (pos.x + ev.translation_x);
	rect.ul_y = rect.lr_y = (short) (pos.y + ev.translation_y);
	int rid = OS.PtWidgetRid (handle);
	// int input_group = OS.PhInputGroup (cbinfo.event);
	int input_group = OS.PhInputGroup (0);
	OS.PhInitDrag (rid, OS.Ph_DRAG_KEY_MOTION \| OS.Ph_DRAG_TRACK \| OS.Ph_TRACK_DRAG, rect, null, input_group, null, null, null, pos, null);

	/* Compute the banding rectangle */
	startX = x;
	startY = y;
	lastX = area.pos_x;
	lastY = area.pos_y;

	/* The event must be sent because doit flag is used */
	event.x = lastX; event.y = lastY;
	event.detail = SWT.DRAG;

	/*
	* It is possible (but unlikely), that application
	* code could have disposed the widget in the selection
	* event. If this happens, end the processing of the
	* Windows message by returning zero as the result of
	* the window proc.
	*/
	sendEvent (SWT.Selection, event);
	if (isDisposed ()) return OS.Pt_END;

	/* Draw the banding rectangle */
	if (event.doit) {
	dragging = true;
	menuShell ().bringToTop ();
	OS.PtFlush ();
	drawBand (lastX = event.x, lastY = event.y, width, height);
	}
	break;
	case OS.Ph_EV_BUT_RELEASE:
	if (ev.subtype != OS.Ph_EV_RELEASE_PHANTOM) {
	return result;
	}
	/* Compute the banding rectangle */
	if (!dragging) return result;
	dragging = false;

	/* The event must be sent because doit flag is used */
	event.x = lastX; event.y = lastY;
	drawBand (lastX, lastY, width, height);
	sendEvent (SWT.Selection, event);
	// widget could be disposed at this point
	break;
	case OS.Ph_EV_PTR_MOTION_BUTTON:
	case OS.Ph_EV_PTR_MOTION_NOBUTTON:
	case OS.Ph_EV_DRAG:
	if (ev.subtype != OS.Ph_EV_DRAG_MOTION_EVENT) {
	return result;
	}
	if (!dragging) return result;

	/* Compute the banding rectangle */
	x += area.pos_x;
	y += area.pos_y;
	Rectangle r = parent.getClientArea ();
	int clientWidth = r.width;
	int clientHeight = r.height;
	int newX = lastX, newY = lastY;
	if ((style & SWT.VERTICAL) != 0) {
	newX = Math.min (Math.max (0, x - startX), clientWidth - width);
	} else {
	newY = Math.min (Math.max (0, y - startY), clientHeight - height);
	}
	if ((newX == lastX) && (newY == lastY)) return result;
	drawBand (lastX, lastY, width, height);

	/* The event must be sent because doit flag is used */
	event.x = newX; event.y = newY;
	event.detail = SWT.DRAG;

	/*
	* It is possible (but unlikely), that application
	* code could have disposed the widget in the selection
	* event. If this happens, end the processing of the
	* Windows message by returning zero as the result of
	* the window proc.
	*/
	sendEvent (SWT.Selection, event);
	if (isDisposed ()) return OS.Pt_END;

	/* Draw the banding rectangle */
	if (event.doit) {
	lastX = event.x; lastY = event.y;
	OS.PtFlush ();
	drawBand (lastX, lastY, width, height);
	}
	break;
	}
	return result;
	}

	int processPaint (int damage) {
	OS.PtSuperClassDraw (OS.PtContainer (), handle, damage);
	sendPaintEvent (damage);
	return OS.Pt_CONTINUE;
	}
	public void removeSelectionListener(SelectionListener listener) {
	checkWidget();
	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
	if (eventTable == null) return;
	eventTable.unhook (SWT.Selection, listener);
	eventTable.unhook (SWT.DefaultSelection,listener);
	}

	}