void updateBar(int selection, int minimum, int maximum, int thumb) {
NSScroller widget = (NSScroller) view;
selection = Math.max(minimum, Math.min(maximum - thumb, selection));
float fraction =
minimum == maximum ? 1 : (float) (selection - minimum) / (maximum - thumb - minimum);
float knob = minimum == maximum ? 1 : (float) (thumb - minimum) / (maximum - minimum);
widget.setFloatValue(fraction, knob);
}
/**
* Sets the minimum value. If this value is negative or greater than or equal to the maximum, the
* value is ignored. If necessary, first the thumb and then the selection are adjusted to fit
* within the new range.
*
* @param value the new minimum
* @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 setMinimum(int value) {
checkWidget();
if (value < 0) return;
if (value >= maximum) return;
if (maximum - value < thumb) {
thumb = maximum - value;
}
int selection = Math.min(maximum - thumb, Math.max(getSelection(), value));
this.minimum = value;
updateBar(selection, value, maximum, thumb);
}
/**
* Sets the maximum. If this value is negative or less than or equal to the minimum, the value is
* ignored. If necessary, first the thumb and then the selection are adjusted to fit within the
* new range.
*
* @param value the new maximum, which must be greater than the current minimum
* @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 setMaximum(int value) {
checkWidget();
if (value < 0) return;
if (value <= minimum) return;
if (value - minimum < thumb) {
thumb = value - minimum;
}
int selection = Math.max(minimum, Math.min(getSelection(), value - thumb));
this.maximum = value;
updateBar(selection, minimum, value, thumb);
}
/**
* Sets the size of the receiver's thumb relative to the difference between its maximum and
* minimum values. This new value will be ignored if it is less than one, and will be clamped if
* it exceeds the receiver's current range.
*
* @param value the new thumb value, which must be at least one and not larger than the size of
* the current range
* @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 setThumb(int value) {
checkWidget();
if (value < 1) return;
value = Math.min(value, maximum - minimum);
this.thumb = value;
updateBar(getSelection(), minimum, maximum, value);
}
/**
* Sets the width of the receiver.
*
* @param width the new width
* @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 setWidth(int width) {
checkWidget();
if (width < 0) return;
// TODO how to differentiate 0 and 1 cases?
width = Math.max(0, width - Tree.CELL_GAP);
nsColumn.setWidth(width);
}
/**
* Sets the receiver's selection, minimum value, maximum value, thumb, increment and page
* increment all at once.
*
* <p>Note: This is similar to setting the values individually using the appropriate methods, but
* may be implemented in a more efficient fashion on some platforms.
*
* @param selection the new selection value
* @param minimum the new minimum value
* @param maximum the new maximum value
* @param thumb the new thumb value
* @param increment the new increment value
* @param pageIncrement the new pageIncrement value
* @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 setValues(
int selection, int minimum, int maximum, int thumb, int increment, int pageIncrement) {
checkWidget();
if (minimum < 0) return;
if (maximum < 0) return;
if (thumb < 1) return;
if (increment < 1) return;
if (pageIncrement < 1) return;
thumb = Math.min(thumb, maximum - minimum);
this.increment = increment;
this.pageIncrement = pageIncrement;
updateBar(selection, minimum, maximum, thumb);
}
/**
* Causes the receiver to be resized to its preferred size. For a composite, this involves
* computing the preferred size from its layout, if there is one.
*
* @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 pack() {
checkWidget();
int width = 0;
/* compute header width */
NSTableHeaderCell headerCell = nsColumn.headerCell();
NSSize size = headerCell.cellSize();
width += Math.ceil(size.width);
if (image != null) {
NSSize imageSize = image.handle.size();
width += Math.ceil(imageSize.width) + MARGIN;
}
if (parent.sortColumn == this && parent.sortDirection != SWT.NONE) {
NSRect sortRect = headerCell.sortIndicatorRectForBounds(new NSRect());
width += Math.ceil(sortRect.width + 2 * MARGIN);
}
/* compute item widths down column */
GC gc = new GC(parent);
width = Math.max(width, parent.calculateWidth(parent.items, parent.indexOf(this), gc, true));
gc.dispose();
setWidth(width);
}
public Path(Device device, Path path, float flatness) {
super(device);
if (path == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
if (path.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
flatness = Math.max(0, flatness);
if (flatness == 0) {
handle = new NSBezierPath(path.handle.copy().id);
} else {
float defaultFlatness = NSBezierPath.defaultFlatness();
NSBezierPath.setDefaultFlatness(flatness);
handle = path.handle.bezierPathByFlatteningPath();
NSBezierPath.setDefaultFlatness(defaultFlatness);
}
if (handle == null) SWT.error(SWT.ERROR_NO_HANDLES);
init();
}
void drawInteriorWithFrame_inView(
long /*int*/ id, long /*int*/ sel, NSRect cellRect, long /*int*/ view) {
/*
* Feature in Cocoa. When the last column in a tree does not reach the
* rightmost edge of the tree view, the cell that draws the rightmost-
* column's header is also invoked to draw the header space between its
* right edge and the tree's right edge. If this case is detected then
* nothing should be drawn.
*/
int columnIndex = parent.indexOf(nsColumn);
NSRect headerRect = parent.headerView.headerRectOfColumn(columnIndex);
if (headerRect.x != cellRect.x || headerRect.width != cellRect.width) return;
NSGraphicsContext context = NSGraphicsContext.currentContext();
context.saveGraphicsState();
int contentWidth = 0;
NSSize stringSize = null, imageSize = null;
NSAttributedString attrString = null;
NSTableHeaderCell headerCell = nsColumn.headerCell();
if (displayText != null) {
Font font = Font.cocoa_new(display, headerCell.font());
attrString =
parent.createString(
displayText, font, null, SWT.LEFT, false, (parent.state & DISABLED) == 0, false);
stringSize = attrString.size();
contentWidth += Math.ceil(stringSize.width);
if (image != null) contentWidth += MARGIN; /* space between image and text */
}
if (image != null) {
imageSize = image.handle.size();
contentWidth += Math.ceil(imageSize.width);
}
if (parent.sortColumn == this && parent.sortDirection != SWT.NONE) {
boolean ascending = parent.sortDirection == SWT.UP;
headerCell.drawSortIndicatorWithFrame(cellRect, new NSView(view), ascending, 0);
/* remove the arrow's space from the available drawing width */
NSRect sortRect = headerCell.sortIndicatorRectForBounds(cellRect);
cellRect.width = Math.max(0, sortRect.x - cellRect.x);
}
int drawX = 0;
if ((style & SWT.CENTER) != 0) {
drawX = (int) (cellRect.x + Math.max(MARGIN, ((cellRect.width - contentWidth) / 2)));
} else if ((style & SWT.RIGHT) != 0) {
drawX = (int) (cellRect.x + Math.max(MARGIN, cellRect.width - contentWidth - MARGIN));
} else {
drawX = (int) cellRect.x + MARGIN;
}
if (image != null) {
NSRect destRect = new NSRect();
destRect.x = drawX;
destRect.y = cellRect.y;
destRect.width = Math.min(imageSize.width, cellRect.width - 2 * MARGIN);
destRect.height = Math.min(imageSize.height, cellRect.height);
boolean isFlipped = new NSView(view).isFlipped();
if (isFlipped) {
context.saveGraphicsState();
NSAffineTransform transform = NSAffineTransform.transform();
transform.scaleXBy(1, -1);
transform.translateXBy(0, -(destRect.height + 2 * destRect.y));
transform.concat();
}
NSRect sourceRect = new NSRect();
sourceRect.width = destRect.width;
sourceRect.height = destRect.height;
image.handle.drawInRect(destRect, sourceRect, OS.NSCompositeSourceOver, 1f);
if (isFlipped) context.restoreGraphicsState();
drawX += destRect.width;
}
if (displayText != null && displayText.length() > 0) {
if (image != null) drawX += MARGIN; /* space between image and text */
NSRect destRect = new NSRect();
destRect.x = drawX;
destRect.y = cellRect.y;
destRect.width = Math.min(stringSize.width, cellRect.x + cellRect.width - MARGIN - drawX);
destRect.height = Math.min(stringSize.height, cellRect.height);
attrString.drawInRect(destRect);
}
if (attrString != null) attrString.release();
context.restoreGraphicsState();
}