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package org.eclipse.swt.widgets;
/*
* Licensed Materials - Property of IBM,
* (c) Copyright IBM Corp. 1998, 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 /*final*/ class Scale extends Control {
public Scale (Composite parent, int style) {
super (parent, checkStyle (style));
}
public void addSelectionListener(SelectionListener 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.Selection,typedListener);
addListener (SWT.DefaultSelection,typedListener);
}
static int checkStyle (int style) {
return checkBits (style, SWT.HORIZONTAL, SWT.VERTICAL, 0, 0, 0, 0);
}
public Point computeSize (int wHint, int hHint, boolean changed) {
if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
PhDim_t dim = new PhDim_t();
if (!OS.PtWidgetIsRealized (handle)) OS.PtExtentWidget (handle);
OS.PtWidgetPreferredSize(handle, dim);
int width = dim.w * 7; int height = dim.h;
if (wHint != SWT.DEFAULT || hHint != SWT.DEFAULT) {
PhRect_t rect = new PhRect_t ();
PhArea_t area = new PhArea_t ();
rect.lr_x = (short) (wHint - 1);
rect.lr_y = (short) (hHint - 1);
OS.PtSetAreaFromWidgetCanvas (handle, rect, area);
if (wHint != SWT.DEFAULT) width = area.size_w;
if (hHint != SWT.DEFAULT) height = area.size_h;
}
return new Point (width, height);
}
void createHandle (int index) {
Display display = getDisplay ();
int clazz = display.PtSlider;
int parentHandle = parent.handle;
int [] args = {
OS.Pt_ARG_MAXIMUM, 100, 0,
OS.Pt_ARG_PAGE_INCREMENT, 10, 0,
OS.Pt_ARG_SLIDER_SIZE, 10, 0,
OS.Pt_ARG_ORIENTATION, (style & SWT.HORIZONTAL) != 0 ? OS.Pt_HORIZONTAL : OS.Pt_VERTICAL, 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);
}
public int getIncrement () {
if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
int [] args = {OS.Pt_ARG_INCREMENT, 0, 0};
OS.PtGetResources (handle, args.length / 3, args);
return args [1];
}
public int getMaximum () {
if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
int [] args = {OS.Pt_ARG_MAXIMUM, 0, 0};
OS.PtGetResources (handle, args.length / 3, args);
return args [1];
}
public int getMinimum () {
if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
int [] args = {OS.Pt_ARG_MINIMUM, 0, 0};
OS.PtGetResources (handle, args.length / 3, args);
return args [1];
}
public int getPageIncrement () {
if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
int [] args = {OS.Pt_ARG_PAGE_INCREMENT, 0, 0};
OS.PtGetResources (handle, args.length / 3, args);
return args [1];
}
public int getSelection () {
if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
int [] args = {OS.Pt_ARG_SCROLL_POSITION, 0, 0};
OS.PtGetResources (handle, args.length / 3, args);
return args [1];
}
void hookEvents () {
int windowProc = getDisplay ().windowProc;
OS.PtAddCallback (handle, OS.Pt_CB_SLIDER_MOVE, windowProc, SWT.Selection);
}
int processPaint (int damage) {
OS.PtSuperClassDraw (OS.PtSlider (), handle, damage);
return super.processPaint (damage);
}
int processSelection (int info) {
if (info == 0) return OS.Pt_CONTINUE;
sendEvent(SWT.Selection);
return OS.Pt_CONTINUE;
}
public void removeSelectionListener(SelectionListener 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.Selection, listener);
eventTable.unhook (SWT.DefaultSelection,listener);
}
public void setIncrement (int value) {
if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
int [] args = {OS.Pt_ARG_INCREMENT, value, 0};
OS.PtSetResources (handle, args.length / 3, args);
}
public void setMaximum (int value) {
if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
int [] args = {OS.Pt_ARG_MAXIMUM, value - 1, 0};
OS.PtSetResources (handle, args.length / 3, args);
}
public void setMinimum (int value) {
if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
int [] args = {OS.Pt_ARG_MINIMUM, value, 0};
OS.PtSetResources (handle, args.length / 3, args);
}
public void setPageIncrement (int value) {
if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
int [] args = {OS.Pt_ARG_PAGE_INCREMENT, value, 0};
OS.PtSetResources (handle, args.length / 3, args);
}
public void setSelection (int value) {
if (!isValidThread ()) error (SWT.ERROR_THREAD_INVALID_ACCESS);
if (!isValidWidget ()) error (SWT.ERROR_WIDGET_DISPOSED);
int [] args = {OS.Pt_ARG_SCROLL_POSITION, value, 0};
OS.PtSetResources (handle, args.length / 3, args);
}
}
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