package org.eclipse.swt.widgets; | |
/* | |
* (c) Copyright IBM Corp. 2000, 2001. | |
* All Rights Reserved | |
*/ | |
import org.eclipse.swt.internal.win32.*; | |
import org.eclipse.swt.*; | |
import org.eclipse.swt.graphics.*; | |
/** | |
* Instances of the receiver represent is an unselectable | |
* user interface object that is used to display progress, | |
* typically in the form of a bar. | |
* <dl> | |
* <dt><b>Styles:</b></dt> | |
* <dd>SMOOTH, HORIZONTAL, VERTICAL</dd> | |
* <dt><b>Events:</b></dt> | |
* <dd>(none)</dd> | |
* </dl> | |
* <p> | |
* IMPORTANT: This class is intended to be subclassed <em>only</em> | |
* within the SWT implementation. | |
* </p> | |
*/ | |
public class ProgressBar extends Control { | |
static final int ProgressBarProc; | |
static final byte [] ProgressBarClass = OS.PROGRESS_CLASS; | |
static { | |
WNDCLASSEX lpWndClass = new WNDCLASSEX (); | |
lpWndClass.cbSize = WNDCLASSEX.sizeof; | |
OS.GetClassInfoEx (0, ProgressBarClass, lpWndClass); | |
ProgressBarProc = lpWndClass.lpfnWndProc; | |
} | |
public ProgressBar (Composite parent, int style) { | |
super (parent, checkStyle (style)); | |
} | |
int callWindowProc (int msg, int wParam, int lParam) { | |
if (handle == 0) return 0; | |
return OS.CallWindowProc (ProgressBarProc, handle, msg, wParam, lParam); | |
} | |
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) { | |
checkWidget (); | |
int border = getBorderWidth (); | |
int width = border * 2, height = border * 2; | |
if ((style & SWT.HORIZONTAL) != 0) { | |
width += OS.GetSystemMetrics (OS.SM_CXHSCROLL) * 10; | |
height += OS.GetSystemMetrics (OS.SM_CYHSCROLL); | |
} else { | |
width += OS.GetSystemMetrics (OS.SM_CXVSCROLL); | |
height += OS.GetSystemMetrics (OS.SM_CYVSCROLL) * 10; | |
} | |
if (wHint != SWT.DEFAULT) width = wHint + (border * 2); | |
if (hHint != SWT.DEFAULT) height = hHint + (border * 2); | |
return new Point (width, height); | |
} | |
void createHandle () { | |
super.createHandle (); | |
OS.SendMessage (handle, OS.TBM_SETRANGEMAX, 0, 100); | |
OS.SendMessage (handle, OS.TBM_SETPAGESIZE, 0, 10); | |
OS.SendMessage (handle, OS.TBM_SETTICFREQ, 10, 0); | |
} | |
int defaultForeground () { | |
return OS.GetSysColor (OS.COLOR_HIGHLIGHT); | |
} | |
/** | |
* Returns the maximum value which the receiver will allow. | |
* | |
* @return the maximum | |
* | |
* @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 int getMaximum () { | |
checkWidget (); | |
return OS.SendMessage (handle, OS.PBM_GETRANGE, 0, 0); | |
} | |
/** | |
* Returns the minimum value which the receiver will allow. | |
* | |
* @return the minimum | |
* | |
* @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 int getMinimum () { | |
checkWidget (); | |
return OS.SendMessage (handle, OS.PBM_GETRANGE, 1, 0); | |
} | |
/** | |
* Returns the single <em>selection</em> that is the receiver's position. | |
* | |
* @return the selection | |
* | |
* @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 int getSelection () { | |
checkWidget (); | |
return OS.SendMessage (handle, OS.PBM_GETPOS, 0, 0); | |
} | |
void setBackgroundPixel (int pixel) { | |
if (background == pixel) return; | |
background = pixel; | |
/* | |
* Feature in Windows. Setting the color to be | |
* the current default is not correct because the | |
* widget will not change colors when the colors | |
* are changed from the control panel. There is | |
* no fix at this time. | |
*/ | |
if (pixel == -1) pixel = defaultBackground (); | |
OS.SendMessage (handle, OS.PBM_SETBKCOLOR, 0, pixel); | |
} | |
void setForegroundPixel (int pixel) { | |
if (foreground == pixel) return; | |
foreground = pixel; | |
/* | |
* Feature in Windows. Setting the color to be | |
* the current default is not correct because the | |
* widget will not change colors when the colors | |
* are changed from the control panel. There is | |
* no fix at this time. | |
*/ | |
if (pixel == -1) pixel = defaultForeground (); | |
OS.SendMessage (handle, OS.PBM_SETBARCOLOR, 0, pixel); | |
} | |
/** | |
* Sets the maximum value which the receiver will allow | |
* to be the argument which must be greater than or | |
* equal to zero. | |
* | |
* @param value the new maximum (must be zero or greater) | |
* | |
* @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 setMaximum (int value) { | |
checkWidget (); | |
int minimum = OS.SendMessage (handle, OS.PBM_GETRANGE, 1, 0); | |
if (0 <= minimum && minimum < value) { | |
OS.SendMessage (handle, OS.PBM_SETRANGE32, minimum, value); | |
} | |
} | |
/** | |
* Sets the minimum value which the receiver will allow | |
* to be the argument which must be greater than or | |
* equal to zero. | |
* | |
* @param value the new minimum (must be zero or greater) | |
* | |
* @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 setMinimum (int value) { | |
checkWidget (); | |
int maximum = OS.SendMessage (handle, OS.PBM_GETRANGE, 0, 0); | |
if (0 <= value && value < maximum) { | |
OS.SendMessage (handle, OS.PBM_SETRANGE32, value, maximum); | |
} | |
} | |
/** | |
* Sets the single <em>selection</em> that is the receiver's | |
* position to the argument which must be greater than or equal | |
* to zero. | |
* | |
* @param value the new selection (must be zero or greater) | |
* | |
* @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 setSelection (int value) { | |
checkWidget (); | |
if (value < 0) return; | |
OS.SendMessage (handle, OS.PBM_SETPOS, value, 0); | |
} | |
int widgetStyle () { | |
int bits = super.widgetStyle (); | |
if ((style & SWT.SMOOTH) != 0) bits |= OS.PBS_SMOOTH; | |
if ((style & SWT.VERTICAL) != 0) bits |= OS.PBS_VERTICAL; | |
return bits; | |
} | |
byte [] windowClass () { | |
return ProgressBarClass; | |
} | |
int windowProc () { | |
return ProgressBarProc; | |
} | |
} |