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package org.eclipse.swt.widgets;
import org.eclipse.swt.widgets.*;
import org.eclipse.swt.graphics.*;
import org.eclipse.swt.*;
import org.eclipse.swt.internal.motif.*;
/*
* Licensed Materials - Property of IBM,
* (c) Copyright IBM Corp. 1998, 2000 All Rights Reserved
*/
public /*final*/ class CoolItem extends Item {
Control control;
CoolBar parent;
boolean dragging;
int mouseXOffset;
int preferredWidth = -1;
int preferredHeight = -1;
int id;
static final int MARGIN_WIDTH = 4;
static final int MARGIN_HEIGHT = 2;
static final int DEFAULT_HEIGHT = (2 * MARGIN_HEIGHT) + 28;
static final int GRABBER_WIDTH = 2;
static final int MINIMUM_WIDTH = (2 * MARGIN_WIDTH) + GRABBER_WIDTH;
public CoolItem (CoolBar parent, int style) {
super(parent, style);
this.parent = parent;
parent.createItem (this, parent.getItemCount ());
}
public CoolItem (CoolBar parent, int style, int index) {
super(parent, style);
this.parent = parent;
parent.createItem (this, index);
}
protected void checkSubclass () {
if (!isValidSubclass ()) error (SWT.ERROR_INVALID_SUBCLASS);
}
public Point computeSize (int wHint, int hHint) {
if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
if (preferredWidth > -1) return new Point(preferredWidth, preferredHeight);
int width = MINIMUM_WIDTH;
int height = DEFAULT_HEIGHT;
if (wHint != SWT.DEFAULT) width = wHint + MINIMUM_WIDTH + MARGIN_WIDTH;
if (hHint != SWT.DEFAULT) height = hHint + (2 + MARGIN_HEIGHT);
return new Point (width, height);
}
void createHandle (int index) {
state |= HANDLE;
int [] argList = {
OS.XmNwidth, MINIMUM_WIDTH,
OS.XmNheight, DEFAULT_HEIGHT,
OS.XmNpositionIndex, index,
OS.XmNtraversalOn, 0,
};
handle = OS.XmCreateDrawingArea(parent.handle, null, argList, argList.length / 2);
if (handle == 0) error (SWT.ERROR_NO_HANDLES);
}
public Rectangle getBounds () {
if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
int [] argList = {OS.XmNx, 0, OS.XmNy, 0, OS.XmNwidth, 0, OS.XmNheight, 0};
OS.XtGetValues (handle, argList, argList.length / 2);
return new Rectangle ((short) argList [1], (short) argList [3], argList [5], argList [7]);
}
public Control getControl () {
if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
return control;
}
public Display getDisplay () {
Composite parent = this.parent;
if (parent == null) error (SWT.ERROR_WIDGET_DISPOSED);
return parent.getDisplay ();
}
Rectangle getGrabberArea () {
int [] argList = {OS.XmNheight, 0};
OS.XtGetValues (handle, argList, argList.length / 2);
return new Rectangle(0, 0, MINIMUM_WIDTH, argList[1]);
}
public CoolBar getParent () {
if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
return parent;
}
Point getSize () {
int [] argList = {OS.XmNwidth, 0, OS.XmNheight, 0};
OS.XtGetValues (handle, argList, argList.length / 2);
return new Point (argList [1], argList [3]);
}
void hookEvents () {
int windowProc = getDisplay ().windowProc;
OS.XtAddEventHandler (handle, OS.ExposureMask, false, windowProc, SWT.Paint);
OS.XtAddEventHandler (handle, OS.ButtonPressMask, false, windowProc, SWT.MouseDown);
OS.XtAddEventHandler (handle, OS.ButtonReleaseMask, false, windowProc, SWT.MouseUp);
OS.XtAddEventHandler (handle, OS.PointerMotionMask, false, windowProc, SWT.MouseMove);
OS.XtAddEventHandler (handle, OS.LeaveWindowMask, false, windowProc, SWT.MouseExit);
}
void manageChildren () {
OS.XtManageChild (handle);
}
int processMouseDown (int callData) {
XButtonEvent xEvent = new XButtonEvent ();
OS.memmove (xEvent, callData, XButtonEvent.sizeof);
if (getGrabberArea().contains(xEvent.x, xEvent.y)) {
dragging = true;
mouseXOffset = xEvent.x;
parent.setCursor(parent.dragCursor);
}
return 0;
}
int processMouseExit (int callData) {
if (!dragging) parent.setCursor(null);
return 0;
}
int processMouseMove (int callData) {
XMotionEvent xEvent = new XMotionEvent ();
OS.memmove (xEvent, callData, XMotionEvent.sizeof);
if (dragging) {
int [] argList = {OS.XmNheight, 0};
OS.XtGetValues (handle, argList, argList.length / 2);
int left_root = xEvent.x_root - mouseXOffset;
if (xEvent.y < 0) {
parent.moveUp(this, left_root);
return 0;
}
if (xEvent.y > argList[1]){
parent.moveDown(this, left_root);
return 0;
}
int delta = Math.abs(xEvent.x - mouseXOffset);
if (xEvent.x < mouseXOffset) {
parent.moveLeft(this, delta);
return 0;
}
if (xEvent.x > mouseXOffset) {
parent.moveRight(this, delta);
return 0;
}
return 0;
}
if (getGrabberArea().contains(xEvent.x, xEvent.y)) {
parent.setCursor(parent.hoverCursor);
} else {
parent.setCursor(null);
}
return 0;
}
int processMouseUp (int callData) {
dragging = false;
parent.setCursor(parent.hoverCursor);
return 0;
}
int processPaint (int callData) {
int xDisplay = OS.XtDisplay (handle);
if (xDisplay == 0) return 0;
int xWindow = OS.XtWindow (handle);
if (xWindow == 0) return 0;
int xGC = OS.XCreateGC (xDisplay, xWindow, 0, null);
Display display = getDisplay();
int shadowPixel = display.getSystemColor(SWT.COLOR_WIDGET_NORMAL_SHADOW).handle.pixel;
int highlightPixel = display.getSystemColor(SWT.COLOR_WIDGET_HIGHLIGHT_SHADOW).handle.pixel;
int lightShadowPixel = display.getSystemColor(SWT.COLOR_WIDGET_LIGHT_SHADOW).handle.pixel;
int[] argList = {OS.XmNheight, 0};
OS.XtGetValues (handle, argList, argList.length / 2);
int height = argList[1];
int grabberHeight = height - (2 * MARGIN_HEIGHT);
/* Draw separator. */
OS.XSetForeground(xDisplay, xGC, shadowPixel);
OS.XDrawLine (xDisplay, xWindow, xGC, 0, 0, 0, height);
OS.XSetForeground(xDisplay, xGC, highlightPixel);
OS.XDrawLine (xDisplay, xWindow, xGC, 1, 0, 1, height);
/* Draw grabber. */
OS.XSetForeground(xDisplay, xGC, highlightPixel);
OS.XSetBackground(xDisplay, xGC, lightShadowPixel);
OS.XFillRectangle(xDisplay, xWindow, xGC, MARGIN_WIDTH, MARGIN_HEIGHT, GRABBER_WIDTH, grabberHeight);
OS.XSetForeground(xDisplay, xGC, shadowPixel);
int right = MARGIN_WIDTH + GRABBER_WIDTH;
int bottom = MARGIN_HEIGHT + grabberHeight;
OS.XDrawLine (xDisplay, xWindow, xGC, right, MARGIN_HEIGHT, right, bottom);
OS.XDrawLine (xDisplay, xWindow, xGC, MARGIN_WIDTH, bottom, right, bottom);
OS.XFreeGC(xDisplay, xGC);
return 0;
}
public void setControl (Control control) {
if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
if (control != null && control.parent != parent) {
error (SWT.ERROR_INVALID_PARENT);
}
Control oldControl = this.control;
if (oldControl != null) oldControl.setVisible(false);
this.control = control;
if (control != null && !control.isDisposed ()) {
int [] argList = {OS.XmNx, 0, OS.XmNy, 0, OS.XmNwidth, 0, OS.XmNheight, 0};
OS.XtGetValues (handle, argList, argList.length / 2);
int controlY = ((short) argList[3]) + MARGIN_HEIGHT;
control.setBounds (
((short) argList [1]) + MINIMUM_WIDTH,
controlY,
argList [5] - MINIMUM_WIDTH - MARGIN_WIDTH,
argList [7] - (2 * MARGIN_HEIGHT));
if (OS.XtIsRealized (handle)) {
int window = OS.XtWindow (handle);
if (window == 0) return;
int display = OS.XtDisplay (handle);
if (display == 0) return;
OS.XLowerWindow (display, window);
}
control.setVisible(true);
}
}
public void setSize (int width, int height) {
if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
width = Math.max (width, MINIMUM_WIDTH);
height = Math.max (height, DEFAULT_HEIGHT);
OS.XtResizeWidget (handle, width, height, 0);
if (control != null) {
int controlWidth = width - MINIMUM_WIDTH - MARGIN_WIDTH;
int controlHeight = height - (2 * MARGIN_HEIGHT);
control.setSize(controlWidth, controlHeight);
}
parent.relayout();
}
int getControlOffset(int height) {
return ((height - control.getSize().y - (2 * MARGIN_HEIGHT)) / 2) + MARGIN_HEIGHT;
}
void redraw() {
int display = OS.XtDisplay (handle);
if (display == 0) return;
int window = OS.XtWindow (handle);
if (window == 0) return;
OS.XClearArea (display, window, 0, 0, 0, 0, true);
}
void setLocation (int x, int y) {
OS.XtMoveWidget (handle, x, y);
if (control != null) {
int [] argList = {OS.XmNheight, 0};
OS.XtGetValues (handle, argList, argList.length / 2);
int controlY = y + getControlOffset(argList[1]);
control.setLocation(x + MINIMUM_WIDTH, controlY);
}
}
public void setSize (Point size) {
if (size == null) error (SWT.ERROR_NULL_ARGUMENT);
setSize (size.x, size.y);
}
void setBounds (int x, int y, int width, int height) {
/*
* Feature in Motif. Motif will not allow a window
* to have a zero width or zero height. The fix is
* to ensure these values are never zero.
*/
int newWidth = Math.max (width, 1), newHeight = Math.max (height, 1);
OS.XtConfigureWidget (handle, x, y, newWidth, newHeight, 0);
if (control != null) {
int controlY = y + getControlOffset(newHeight);
control.setBounds(
x + MINIMUM_WIDTH,
controlY,
newWidth - MINIMUM_WIDTH - MARGIN_WIDTH,
control.getSize().y);
}
}
public Point getPreferredSize () {
if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
return new Point(preferredWidth, preferredHeight);
}
public void setPreferredSize (int width, int height) {
if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
preferredWidth = Math.max (width, MINIMUM_WIDTH);
preferredHeight = Math.max (height, DEFAULT_HEIGHT);
OS.XtResizeWidget (handle, preferredWidth, preferredHeight, 0);
if (control != null) {
int controlWidth = preferredWidth - MINIMUM_WIDTH - MARGIN_WIDTH;
int controlHeight = preferredHeight - (2 * MARGIN_HEIGHT);
control.setSize(controlWidth, controlHeight);
}
}
public void setPreferredSize (Point size) {
setPreferredSize(size.x, size.y);
}
}
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