void ScrollArea::drawVBar(gcn::Graphics *graphics)
{
const gcn::Rectangle dim = getVerticalBarDimension();
graphics->setColor(gcn::Color(0, 0, 0, 32));
graphics->fillRectangle(dim);
graphics->setColor(gcn::Color(255, 255, 255));
}
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);
}
}
}
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 ScrollArea::drawVBar(Graphics* graphics)
{
Rectangle dim = getVerticalBarDimension();
graphics->pushClipArea(dim);
int alpha = getBaseColor().a;
Color trackColor = getBaseColor() - 0x101010;
trackColor.a = alpha;
Color shadowColor = getBaseColor() - 0x303030;
shadowColor.a = alpha;
graphics->setColor(trackColor);
graphics->fillRectangle(Rectangle(0, 0, dim.width, dim.height));
graphics->setColor(shadowColor);
graphics->drawLine(0, 0, 0, dim.height);
graphics->popClipArea();
}
void ScrollArea::mousePressed(MouseEvent& mouseEvent)
{
int x = mouseEvent.getX();
int y = mouseEvent.getY();
if (getUpButtonDimension().isPointInRect(x, y))
{
setVerticalScrollAmount(getVerticalScrollAmount()
- mUpButtonScrollAmount);
mUpButtonPressed = true;
}
else if (getDownButtonDimension().isPointInRect(x, y))
{
setVerticalScrollAmount(getVerticalScrollAmount()
+ mDownButtonScrollAmount);
mDownButtonPressed = true;
}
else if (getLeftButtonDimension().isPointInRect(x, y))
{
setHorizontalScrollAmount(getHorizontalScrollAmount()
- mLeftButtonScrollAmount);
mLeftButtonPressed = true;
}
else if (getRightButtonDimension().isPointInRect(x, y))
{
setHorizontalScrollAmount(getHorizontalScrollAmount()
+ mRightButtonScrollAmount);
mRightButtonPressed = true;
}
else if (getVerticalMarkerDimension().isPointInRect(x, y))
{
mIsHorizontalMarkerDragged = false;
mIsVerticalMarkerDragged = true;
mVerticalMarkerDragOffset = y - getVerticalMarkerDimension().y;
}
else if (getVerticalBarDimension().isPointInRect(x,y))
{
if (y < getVerticalMarkerDimension().y)
{
setVerticalScrollAmount(getVerticalScrollAmount()
- (int)(getChildrenArea().height * 0.95));
}
else
{
setVerticalScrollAmount(getVerticalScrollAmount()
+ (int)(getChildrenArea().height * 0.95));
}
}
else if (getHorizontalMarkerDimension().isPointInRect(x, y))
{
mIsHorizontalMarkerDragged = true;
mIsVerticalMarkerDragged = false;
mHorizontalMarkerDragOffset = x - getHorizontalMarkerDimension().x;
}
else if (getHorizontalBarDimension().isPointInRect(x,y))
{
if (x < getHorizontalMarkerDimension().x)
{
setHorizontalScrollAmount(getHorizontalScrollAmount()
- (int)(getChildrenArea().width * 0.95));
}
else
{
setHorizontalScrollAmount(getHorizontalScrollAmount()
+ (int)(getChildrenArea().width * 0.95));
}
}
// Eat the mouse
mouseEvent.consume();
}
