Rectangle ScrollArea::getVerticalMarkerDimension()
{
if (!mVBarVisible)
{
return Rectangle(0, 0, 0, 0);
}
int length, pos;
Rectangle barDim = getVerticalBarDimension();
if (getContent() && getContent()->getHeight() != 0)
{
length = (barDim.height * getChildrenArea().height)
/ getContent()->getHeight();
}
else
{
length = barDim.height;
}
if (length < mScrollbarWidth)
{
length = mScrollbarWidth;
}
if (length > barDim.height)
{
length = barDim.height;
}
if (getVerticalMaxScroll() != 0)
{
pos = ((barDim.height - length) * getVerticalScrollAmount())
/ getVerticalMaxScroll();
}
else
{
pos = 0;
}
return Rectangle(barDim.x, barDim.y + pos, mScrollbarWidth, length);
}
void FFScrollArea::draw(gcn::Graphics *graphics)
{
graphics->pushClipArea(getContent()->getDimension());
getContent()->draw(graphics);
graphics->popClipArea();
if (getVerticalMaxScroll() != 0)
{
int y = ((getHeight() - 32) * getVerticalScrollAmount()) /
getVerticalMaxScroll();
graphics->setColor(0x000000);
graphics->drawRectangle(gcn::Rectangle(getWidth()-11, y, 8, 32));
graphics->drawRectangle(gcn::Rectangle(getWidth()-10, y+1, 8, 32));
graphics->setColor(0xffffff);
graphics->fillRectangle(gcn::Rectangle(getWidth()-10, y+1, 6, 30));
}
}
void ScrollArea::setVerticalScrollAmount(int vScroll)
{
int max = getVerticalMaxScroll();
mVScroll = vScroll;
if (vScroll > max)
{
mVScroll = max;
}
if (vScroll < 0)
{
mVScroll = 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);
}
}
}
