void propagateWidget(boolean enabled) {
super.propagateWidget(enabled);
if (formHandle != 0) propagateHandle(enabled, formHandle, OS.None);
if (scrolledHandle != 0) {
propagateHandle(enabled, scrolledHandle, OS.None);
if (horizontalBar != null) horizontalBar.propagateWidget(enabled);
if (verticalBar != null) verticalBar.propagateWidget(enabled);
}
}
void releaseChildren(boolean destroy) {
if (horizontalBar != null) {
horizontalBar.release(false);
horizontalBar = null;
}
if (verticalBar != null) {
verticalBar.release(false);
verticalBar = null;
}
super.releaseChildren(destroy);
}
void redrawWidget(
int x, int y, int width, int height, boolean redrawAll, boolean allChildren, boolean trim) {
super.redrawWidget(x, y, width, height, redrawAll, allChildren, trim);
if (!trim) return;
if (formHandle == 0 && scrolledHandle == 0) return;
short[] root_x = new short[1], root_y = new short[1];
OS.XtTranslateCoords(handle, (short) x, (short) y, root_x, root_y);
if (formHandle != 0) {
short[] form_x = new short[1], form_y = new short[1];
OS.XtTranslateCoords(formHandle, (short) 0, (short) 0, form_x, form_y);
redrawHandle(
root_x[0] - form_x[0], root_y[0] - form_y[0], width, height, redrawAll, formHandle);
}
if (scrolledHandle != 0) {
short[] scrolled_x = new short[1], scrolled_y = new short[1];
OS.XtTranslateCoords(scrolledHandle, (short) 0, (short) 0, scrolled_x, scrolled_y);
redrawHandle(
root_x[0] - scrolled_x[0],
root_y[0] - scrolled_y[0],
width,
height,
redrawAll,
scrolledHandle);
if (horizontalBar != null && horizontalBar.getVisible()) {
int horizontalHandle = horizontalBar.handle;
short[] hscroll_x = new short[1], hscroll_y = new short[1];
OS.XtTranslateCoords(horizontalHandle, (short) 0, (short) 0, hscroll_x, hscroll_y);
redrawHandle(
root_x[0] - hscroll_x[0],
root_y[0] - hscroll_y[0],
width,
height,
redrawAll,
horizontalHandle);
}
if (verticalBar != null && verticalBar.getVisible()) {
int verticalHandle = verticalBar.handle;
short[] vscroll_x = new short[1], vscroll_y = new short[1];
OS.XtTranslateCoords(verticalHandle, (short) 0, (short) 0, vscroll_x, vscroll_y);
redrawHandle(
root_x[0] - vscroll_x[0],
root_y[0] - vscroll_y[0],
width,
height,
redrawAll,
verticalHandle);
}
}
}
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];
}
ScrollBar createStandardBar(int style) {
if (scrolledHandle == 0) return null;
ScrollBar bar = new ScrollBar();
bar.parent = this;
bar.style = style;
bar.display = display;
int[] argList = {OS.XmNhorizontalScrollBar, 0, OS.XmNverticalScrollBar, 0};
OS.XtGetValues(scrolledHandle, argList, argList.length / 2);
if (style == SWT.H_SCROLL) bar.handle = argList[1];
if (style == SWT.V_SCROLL) bar.handle = argList[3];
bar.hookEvents();
bar.register();
return bar;
}
void reskinChildren(int flags) {
if (horizontalBar != null) horizontalBar.reskin(flags);
if (verticalBar != null) verticalBar.reskin(flags);
super.reskinChildren(flags);
}
void destroyScrollBar(ScrollBar bar) {
setScrollBarVisible(bar, false);
if ((state & CANVAS) != 0) bar.destroyHandle();
}