boolean setScrollBarVisible(ScrollBar bar, boolean visible) {
if (scrolledHandle == 0) return false;
int barHandle = bar.handle;
boolean managed = OS.XtIsManaged(barHandle);
if (managed == visible) return false;
/*
* Feature in Motif. Hiding or showing a scroll bar
* can cause the widget to automatically resize in
* the OS. This behavior is unwanted. The fix is
* to force the widget to resize to original size.
*/
int[] argList = {OS.XmNwidth, 0, OS.XmNheight, 0, OS.XmNborderWidth, 0};
OS.XtGetValues(scrolledHandle, argList, argList.length / 2);
int[] argList1 = {OS.XmNwidth, 0, OS.XmNheight, 0};
OS.XtGetValues(handle, argList1, argList1.length / 2);
/* Hide or show the scroll bar */
if (visible) {
OS.XtManageChild(barHandle);
} else {
OS.XtUnmanageChild(barHandle);
}
if ((state & CANVAS) != 0) {
if (formHandle != 0) {
boolean showBorder = (style & SWT.BORDER) != 0;
int margin = showBorder || visible ? 3 : 0;
if ((bar.style & SWT.V_SCROLL) != 0) {
int[] argList2 = new int[] {OS.XmNmarginWidth, margin};
OS.XtSetValues(formHandle, argList2, argList2.length / 2);
}
if ((bar.style & SWT.H_SCROLL) != 0) {
int[] argList2 = new int[] {OS.XmNmarginHeight, margin};
OS.XtSetValues(formHandle, argList2, argList2.length / 2);
}
}
}
/*
* Feature in Motif. When XtSetValues() is used to restore the width and
* height of the widget, the new width and height are sometimes ignored.
* The fix is to use XtResizeWidget().
*/
OS.XtResizeWidget(scrolledHandle, argList[1], argList[3], argList[5]);
bar.sendEvent(visible ? SWT.Show : SWT.Hide);
int[] argList3 = {OS.XmNwidth, 0, OS.XmNheight, 0};
OS.XtGetValues(handle, argList3, argList3.length / 2);
return argList1[1] != argList3[1] || argList1[3] != argList3[3];
}
/**
* Sets the control that is used to fill the bounds of the item when the item is a <code>SEPARATOR
* </code>.
*
* @param control the new control
* @exception IllegalArgumentException
* <ul>
* <li>ERROR_INVALID_ARGUMENT - if the control has been disposed
* <li>ERROR_INVALID_PARENT - if the control is not in the same widget tree
* </ul>
*
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
* </ul>
*/
public void setControl(Control control) {
checkWidget();
if (control != null) {
if (control.isDisposed()) error(SWT.ERROR_INVALID_ARGUMENT);
if (control.parent != parent) error(SWT.ERROR_INVALID_PARENT);
}
if ((style & SWT.SEPARATOR) == 0) return;
if (this.control == control) return;
this.control = control;
int[] argList = {
OS.XmNseparatorType,
control == null
? ((parent.style & SWT.FLAT) != 0 ? OS.XmSHADOW_ETCHED_IN : OS.XmSHADOW_ETCHED_OUT)
: OS.XmNO_LINE,
};
OS.XtSetValues(handle, argList, argList.length / 2);
if (control != null && !control.isDisposed()) {
/*
* It is possible that the control was created with a
* z-order below that of the current tool item. In this
* case, the control is not visible because it is
* obscured by the tool item. The fix is to move the
* control above this tool item in the z-order.
* The code below is similar to the code found in
* setZOrder.
*/
int xDisplay = OS.XtDisplay(handle);
if (xDisplay == 0) return;
if (!OS.XtIsRealized(handle)) {
Shell shell = parent.getShell();
shell.realizeWidget();
}
int topHandle1 = control.topHandle();
int window1 = OS.XtWindow(topHandle1);
if (window1 == 0) return;
int topHandle2 = this.topHandle();
int window2 = OS.XtWindow(topHandle2);
if (window2 == 0) return;
XWindowChanges struct = new XWindowChanges();
struct.sibling = window2;
struct.stack_mode = OS.Above;
int screen = OS.XDefaultScreen(xDisplay);
int flags = OS.CWStackMode | OS.CWSibling;
OS.XReconfigureWMWindow(xDisplay, window1, screen, flags, struct);
}
parent.relayout();
}
void setDrawPressed(boolean value) {
int shadowType = value ? OS.XmSHADOW_IN : OS.XmSHADOW_OUT;
int[] argList = {OS.XmNshadowType, shadowType};
OS.XtSetValues(handle, argList, argList.length / 2);
}
void setForegroundPixel(int pixel) {
int[] argList = {OS.XmNforeground, pixel};
OS.XtSetValues(handle, argList, argList.length / 2);
}
/**
* Enables the receiver if the argument is <code>true</code>, and disables it otherwise.
*
* <p>A disabled control is typically not selectable from the user interface and draws with an
* inactive or "grayed" look.
*
* @param enabled the new enabled state
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
* </ul>
*/
public void setEnabled(boolean enabled) {
checkWidget();
int[] argList = {OS.XmNsensitive, enabled ? 1 : 0};
OS.XtSetValues(handle, argList, argList.length / 2);
}
void setBackgroundPixel(int pixel) {
int[] argList = {OS.XmNforeground, 0, OS.XmNhighlightColor, 0};
OS.XtGetValues(handle, argList, argList.length / 2);
OS.XmChangeColor(handle, pixel);
OS.XtSetValues(handle, argList, argList.length / 2);
}
int XmNexposureCallback(int w, int client_data, int call_data) {
if ((style & SWT.SEPARATOR) != 0) return 0;
int xDisplay = OS.XtDisplay(handle);
if (xDisplay == 0) return 0;
int xWindow = OS.XtWindow(handle);
if (xWindow == 0) return 0;
int[] argList = {
OS.XmNcolormap, 0,
OS.XmNwidth, 0,
OS.XmNheight, 0,
};
OS.XtGetValues(handle, argList, argList.length / 2);
int width = argList[3], height = argList[5];
Image currentImage = image;
boolean enabled = getEnabled();
if ((parent.style & SWT.FLAT) != 0) {
boolean hasCursor = hasCursor();
/* Set the shadow thickness */
int thickness = 0;
if (set || (hasCursor && enabled)) {
thickness = Math.min(2, display.buttonShadowThickness);
}
argList = new int[] {OS.XmNshadowThickness, thickness};
OS.XtSetValues(handle, argList, argList.length / 2);
/* Determine if hot image should be used */
if (enabled && hasCursor && hotImage != null) {
currentImage = hotImage;
}
}
GCData data = new GCData();
data.device = display;
data.display = xDisplay;
data.drawable = xWindow;
data.font = parent.font;
data.colormap = argList[1];
int xGC = OS.XCreateGC(xDisplay, xWindow, 0, null);
if (xGC == 0) SWT.error(SWT.ERROR_NO_HANDLES);
GC gc = GC.motif_new(xGC, data);
XmAnyCallbackStruct cb = new XmAnyCallbackStruct();
OS.memmove(cb, call_data, XmAnyCallbackStruct.sizeof);
if (cb.event != 0) {
XExposeEvent xEvent = new XExposeEvent();
OS.memmove(xEvent, cb.event, XExposeEvent.sizeof);
Rectangle rect = new Rectangle(xEvent.x, xEvent.y, xEvent.width, xEvent.height);
gc.setClipping(rect);
}
if (!enabled) {
currentImage = disabledImage;
if (currentImage == null && image != null) {
currentImage = new Image(display, image, SWT.IMAGE_DISABLE);
}
Color disabledColor = display.getSystemColor(SWT.COLOR_WIDGET_NORMAL_SHADOW);
gc.setForeground(disabledColor);
} else {
gc.setForeground(parent.getForeground());
}
gc.setBackground(parent.getBackground());
int textX = 0, textY = 0, textWidth = 0, textHeight = 0;
if (text.length() != 0) {
int flags = SWT.DRAW_DELIMITER | SWT.DRAW_TAB | SWT.DRAW_MNEMONIC;
Point textExtent = gc.textExtent(text, flags);
textWidth = textExtent.x;
textHeight = textExtent.y;
}
int imageX = 0, imageY = 0, imageWidth = 0, imageHeight = 0;
if (currentImage != null) {
Rectangle imageBounds = currentImage.getBounds();
imageWidth = imageBounds.width;
imageHeight = imageBounds.height;
}
int spacing = 0;
if (textWidth != 0 && imageWidth != 0) spacing = 2;
if ((parent.style & SWT.RIGHT) != 0) {
imageX = (width - imageWidth - textWidth - spacing) / 2;
imageY = (height - imageHeight) / 2;
textX = spacing + imageX + imageWidth;
textY = (height - textHeight) / 2;
} else {
imageX = (width - imageWidth) / 2;
imageY = (height - imageHeight - textHeight - spacing) / 2;
textX = (width - textWidth) / 2;
textY = spacing + imageY + imageHeight;
}
if ((style & SWT.DROP_DOWN) != 0) {
textX -= 6;
imageX -= 6;
}
if (textWidth > 0) {
int flags = SWT.DRAW_DELIMITER | SWT.DRAW_TAB | SWT.DRAW_MNEMONIC | SWT.DRAW_TRANSPARENT;
gc.drawText(text, textX, textY, flags);
}
if (imageWidth > 0) gc.drawImage(currentImage, imageX, imageY);
if ((style & SWT.DROP_DOWN) != 0) {
int startX = width - 12, startY = (height - 2) / 2;
int[] arrow = {startX, startY, startX + 3, startY + 3, startX + 6, startY};
gc.setBackground(parent.getForeground());
gc.fillPolygon(arrow);
gc.drawPolygon(arrow);
}
gc.dispose();
OS.XFreeGC(xDisplay, xGC);
if (!enabled && disabledImage == null) {
if (currentImage != null) currentImage.dispose();
}
return 0;
}
