void Scroller::onMouseButton(Widget& widget,
vec2 point,
MouseButton button,
Action action,
uint mods)
{
if (action != PRESSED)
return;
const vec2 local = transformToLocal(point);
const float size = handleSize();
const float offset = handleOffset();
if (m_orientation == HORIZONTAL)
{
if (local.x < offset)
setValue(m_value - valueStep(), true);
else if (local.x >= offset + size)
setValue(m_value + valueStep(), true);
}
else
{
if (local.y > height() - offset)
setValue(m_value - valueStep(), true);
else if (local.y <= height() - offset - size)
setValue(m_value + valueStep(), true);
}
}
void Scroller::onDragBegun(vec2 point, MouseButton button)
{
if (button == MOUSE_BUTTON_LEFT)
{
const vec2 local = transformToLocal(point);
const float size = handleSize();
const float offset = handleOffset();
if (m_orientation == HORIZONTAL)
{
if (local.x >= offset && local.x < offset + size)
m_reference = local.x - offset;
else
cancelDragging();
}
else
{
if (local.y <= height() - offset && local.y > height() - offset - size)
m_reference = height() - local.y - offset;
else
cancelDragging();
}
Widget::onDragBegun(point, button);
}
else
cancelDragging();
}
void Scroller::onDragBegun(Widget& widget, vec2 point)
{
const vec2 local = transformToLocal(point);
const float size = handleSize();
const float offset = handleOffset();
if (m_orientation == HORIZONTAL)
{
if (local.x >= offset && local.x < offset + size)
m_reference = local.x - offset;
else
cancelDragging();
}
else
{
if (local.y <= height() - offset && local.y > height() - offset - size)
m_reference = height() - local.y - offset;
else
cancelDragging();
}
}
void Scroller::draw() const
{
Drawer& drawer = layer().drawer();
const Rect area = globalArea();
if (drawer.pushClipArea(area))
{
drawer.drawWell(area, state());
if (m_minValue != m_maxValue)
{
const float size = handleSize();
const float offset = handleOffset();
Rect handleArea;
if (m_orientation == HORIZONTAL)
{
handleArea.set(area.position.x + offset,
area.position.y,
size,
area.size.y);
}
else
{
handleArea.set(area.position.x,
area.position.y + area.size.y - offset - size,
area.size.x,
size);
}
drawer.drawHandle(handleArea, state());
}
Widget::draw();
drawer.popClipArea();
}
}
