int Slider::valueToMarkerPosition(double value) const
{
int v;
if (getOrientation() == HORIZONTAL)
{
v = getWidth();
}
else
{
v = getHeight();
}
int w = (int)((v - getMarkerLength())
* (value - getScaleStart())
/ (getScaleEnd() - getScaleStart()));
if (w < 0)
{
return 0;
}
if (w > v - getMarkerLength())
{
return v - getMarkerLength();
}
return w;
}
void Slider::mouseDragged(MouseEvent& mouseEvent)
{
if (getOrientation() == HORIZONTAL)
{
setValue(markerPositionToValue(mouseEvent.getX() - getMarkerLength() / 2));
}
else
{
setValue(markerPositionToValue(getHeight() - mouseEvent.getY() - getMarkerLength() / 2));
}
distributeActionEvent();
mouseEvent.consume();
}
void Slider::mouseMotion(int x, int y)
{
if (mMouseDrag)
{
if (getOrientation() == HORIZONTAL)
{
setValue(markerPositionToValue(x - getMarkerLength() / 2));
}
else
{
setValue(markerPositionToValue(getHeight() - y - getMarkerLength() / 2));
}
generateAction();
setDirty(true);
}
}
void Slider::mousePressed(MouseEvent& mouseEvent)
{
if (mouseEvent.getButton() == gcn::MouseEvent::LEFT
&& mouseEvent.getX() >= 0
&& mouseEvent.getX() <= getWidth()
&& mouseEvent.getY() >= 0
&& mouseEvent.getY() <= getHeight())
{
if (getOrientation() == HORIZONTAL)
{
setValue(markerPositionToValue(mouseEvent.getX() - getMarkerLength() / 2));
}
else
{
setValue(markerPositionToValue(getHeight() - mouseEvent.getY() - getMarkerLength() / 2));
}
distributeActionEvent();
}
}
void Slider::mousePress(int x, int y, int button)
{
if (button == gcn::MouseInput::LEFT
&& x >= 0 && x <= getWidth()
&& y >= 0 && y <= getHeight())
{
if (getOrientation() == HORIZONTAL)
{
setValue(markerPositionToValue(x - getMarkerLength() / 2));
}
else
{
setValue(markerPositionToValue(getHeight() - y - getMarkerLength() / 2));
}
mMouseDrag = true;
generateAction();
}
else
{
mMouseDrag = false;
}
}
double Slider::markerPositionToValue(int v) const
{
int w;
if (getOrientation() == HORIZONTAL)
{
w = getWidth();
}
else
{
w = getHeight();
}
double pos = v / ((double)w - getMarkerLength());
return (1.0 - pos) * getScaleStart() + pos * getScaleEnd();
}
void Slider::drawMarker(gcn::Graphics* graphics)
{
gcn::Color faceColor = getBaseColor();
Color highlightColor, shadowColor;
int alpha = getBaseColor().a;
highlightColor = faceColor + 0x303030;
highlightColor.a = alpha;
shadowColor = faceColor - 0x303030;
shadowColor.a = alpha;
graphics->setColor(faceColor);
if (getOrientation() == HORIZONTAL)
{
int v = getMarkerPosition();
graphics->fillRectangle(gcn::Rectangle(v + 1, 1, getMarkerLength() - 2, getHeight() - 2));
graphics->setColor(highlightColor);
graphics->drawLine(v, 0, v + getMarkerLength() - 1,0);
graphics->drawLine(v, 0, v, getHeight() - 1);
graphics->setColor(shadowColor);
graphics->drawLine(v + getMarkerLength() - 1, 1, v + getMarkerLength() - 1, getHeight() - 1);
graphics->drawLine(v + 1, getHeight() - 1, v + getMarkerLength() - 1, getHeight() - 1);
if (isFocused())
{
graphics->setColor(getForegroundColor());
graphics->drawRectangle(Rectangle(v + 2, 2, getMarkerLength() - 4, getHeight() - 4));
}
}
else
{
int v = (getHeight() - getMarkerLength()) - getMarkerPosition();
graphics->fillRectangle(gcn::Rectangle(1, v + 1, getWidth() - 2, getMarkerLength() - 2));
graphics->setColor(highlightColor);
graphics->drawLine(0, v, 0, v + getMarkerLength() - 1);
graphics->drawLine(0, v, getWidth() - 1, v);
graphics->setColor(shadowColor);
graphics->drawLine(1, v + getMarkerLength() - 1, getWidth() - 1, v + getMarkerLength() - 1);
graphics->drawLine(getWidth() - 1, v + 1, getWidth() - 1, v + getMarkerLength() - 1);
if (isFocused())
{
graphics->setColor(getForegroundColor());
graphics->drawRectangle(Rectangle(2, v + 2, getWidth() - 4, getMarkerLength() - 4));
}
}
}
