Rectangle ScrollArea::getHorizontalMarkerDimension()
{
if (!mHBarVisible)
{
return Rectangle(0, 0, 0, 0);
}
int length, pos;
Rectangle barDim = getHorizontalBarDimension();
if (getContent() && getContent()->getWidth() != 0)
{
length = (barDim.width * getChildrenArea().width)
/ getContent()->getWidth();
}
else
{
length = barDim.width;
}
if (length < mScrollbarWidth)
{
length = mScrollbarWidth;
}
if (length > barDim.width)
{
length = barDim.width;
}
if (getHorizontalMaxScroll() != 0)
{
pos = ((barDim.width - length) * getHorizontalScrollAmount())
/ getHorizontalMaxScroll();
}
else
{
pos = 0;
}
return Rectangle(barDim.x + pos, barDim.y, length, mScrollbarWidth);
}
void ScrollArea::setHorizontalScrollAmount(int hScroll)
{
int max = getHorizontalMaxScroll();
mHScroll = hScroll;
if (hScroll > max)
{
mHScroll = max;
}
else if (hScroll < 0)
{
mHScroll = 0;
}
}
void ScrollArea::mouseDragged(MouseEvent& mouseEvent)
{
if (mIsVerticalMarkerDragged)
{
int pos = mouseEvent.getY() - getVerticalBarDimension().y - mVerticalMarkerDragOffset;
int length = getVerticalMarkerDimension().height;
Rectangle barDim = getVerticalBarDimension();
if ((barDim.height - length) > 0)
{
setVerticalScrollAmount((getVerticalMaxScroll() * pos)
/ (barDim.height - length));
}
else
{
setVerticalScrollAmount(0);
}
}
if (mIsHorizontalMarkerDragged)
{
int pos = mouseEvent.getX() - getHorizontalBarDimension().x - mHorizontalMarkerDragOffset;
int length = getHorizontalMarkerDimension().width;
Rectangle barDim = getHorizontalBarDimension();
if ((barDim.width - length) > 0)
{
setHorizontalScrollAmount((getHorizontalMaxScroll() * pos)
/ (barDim.width - length));
}
else
{
setHorizontalScrollAmount(0);
}
}
mouseEvent.consume();
}
void ScrollArea::mouseMotion(int x, int y)
{
if (mVerticalMarkerPressed)
{
int pos = y - getVerticalBarDimension().y - mVerticalMarkerMousePosition;
int length = getVerticalMarkerDimension().height;
Rectangle barDim = getVerticalBarDimension();
if ((barDim.height - length) > 0)
{
setVerticalScrollAmount((getVerticalMaxScroll() * pos)
/ (barDim.height - length));
}
else
{
setVerticalScrollAmount(0);
}
}
if (mHorizontalMarkerPressed)
{
int pos = x - getHorizontalBarDimension().x - mHorizontalMarkerMousePosition;
int length = getHorizontalMarkerDimension().width;
Rectangle barDim = getHorizontalBarDimension();
if ((barDim.width - length) > 0)
{
setHorizontalScrollAmount((getHorizontalMaxScroll() * pos)
/ (barDim.width - length));
}
else
{
setHorizontalScrollAmount(0);
}
}
}