void IGUIScrollBar::HandleMessage(SGUIMessage &Message)
{
switch (Message.type)
{
case GUIM_MOUSE_MOTION:
{
// TODO Gee: Optimizations needed!
CPos mouse = m_pHostObject->GetMousePos();
// If bar is being dragged
if (m_BarPressed)
{
SetPosFromMousePos(mouse);
UpdatePosBoundaries();
}
// check if components are being hovered
m_BarHovered = GetBarRect().PointInside(mouse);
m_ButtonMinusHovered = HoveringButtonMinus(mouse);
m_ButtonPlusHovered = HoveringButtonPlus(mouse);
if (!m_ButtonMinusHovered)
m_ButtonMinusPressed = false;
if (!m_ButtonPlusHovered)
m_ButtonPlusPressed = false;
break;
}
case GUIM_MOUSE_PRESS_LEFT:
{
if (!m_pHostObject)
break;
CPos mouse = m_pHostObject->GetMousePos();
// if bar is pressed
if (GetBarRect().PointInside(mouse))
{
m_BarPressed = true;
m_BarPressedAtPos = mouse;
m_PosWhenPressed = m_Pos;
}
else
// if button-minus is pressed
if (m_ButtonMinusHovered)
{
m_ButtonMinusPressed = true;
ScrollMinus();
}
else
// if button-plus is pressed
if (m_ButtonPlusHovered)
{
m_ButtonPlusPressed = true;
ScrollPlus();
}
else
// Pressing the background of the bar, to scroll
// notice the if-sentence alone does not admit that,
// it must be after the above if/elses
{
if (GetOuterRect().PointInside(mouse))
{
// Scroll plus or minus a lot, this might change, it doesn't
// have to be fancy though.
if (mouse.y < GetBarRect().top)
ScrollMinusPlenty();
else
ScrollPlusPlenty();
// Simulate mouse movement to see if bar now is hovered
SGUIMessage msg(GUIM_MOUSE_MOTION);
HandleMessage(msg);
}
}
break;
}
case GUIM_MOUSE_RELEASE_LEFT:
{
m_ButtonMinusPressed = false;
m_ButtonPlusPressed = false;
break;
}
case GUIM_MOUSE_WHEEL_UP:
{
ScrollMinus();
// Since the scroll was changed, let's simulate a mouse movement
// to check if scrollbar now is hovered
SGUIMessage msg(GUIM_MOUSE_MOTION);
HandleMessage(msg);
break;
}
case GUIM_MOUSE_WHEEL_DOWN:
{
ScrollPlus();
// Since the scroll was changed, let's simulate a mouse movement
// to check if scrollbar now is hovered
SGUIMessage msg(GUIM_MOUSE_MOTION);
HandleMessage(msg);
break;
}
default:
break;
}
}
void CGUIScrollBarVertical::Draw()
{
if (!GetStyle())
{
LOGWARNING("Attempt to draw scrollbar without a style.");
return;
}
if (GetGUI() && IsVisible())
{
CRect outline = GetOuterRect();
// Draw background
GetGUI()->DrawSprite(GetStyle()->m_SpriteBackVertical,
0,
m_Z+0.1f,
CRect(outline.left,
outline.top+(GetStyle()->m_UseEdgeButtons?GetStyle()->m_Width:0),
outline.right,
outline.bottom-(GetStyle()->m_UseEdgeButtons?GetStyle()->m_Width:0))
);
if (GetStyle()->m_UseEdgeButtons)
{
// Get Appropriate sprites
const CGUISpriteInstance* button_top;
const CGUISpriteInstance* button_bottom;
// figure out what sprite to use for top button
if (m_ButtonMinusHovered)
{
if (m_ButtonMinusPressed)
button_top = &GUI<>::FallBackSprite(GetStyle()->m_SpriteButtonTopPressed, GetStyle()->m_SpriteButtonTop);
else
button_top = &GUI<>::FallBackSprite(GetStyle()->m_SpriteButtonTopOver, GetStyle()->m_SpriteButtonTop);
}
else
button_top = &GetStyle()->m_SpriteButtonTop;
// figure out what sprite to use for bottom button
if (m_ButtonPlusHovered)
{
if (m_ButtonPlusPressed)
button_bottom = &GUI<>::FallBackSprite(GetStyle()->m_SpriteButtonBottomPressed, GetStyle()->m_SpriteButtonBottom);
else
button_bottom = &GUI<>::FallBackSprite(GetStyle()->m_SpriteButtonBottomOver, GetStyle()->m_SpriteButtonBottom);
}
else
button_bottom = &GetStyle()->m_SpriteButtonBottom;
// Draw top button
GetGUI()->DrawSprite(*button_top,
0,
m_Z+0.2f,
CRect(outline.left,
outline.top,
outline.right,
outline.top+GetStyle()->m_Width)
);
// Draw bottom button
GetGUI()->DrawSprite(*button_bottom,
0,
m_Z+0.2f,
CRect(outline.left,
outline.bottom-GetStyle()->m_Width,
outline.right,
outline.bottom)
);
}
// Draw bar
GetGUI()->DrawSprite(GetStyle()->m_SpriteBarVertical,
0,
m_Z + 0.2f,
GetBarRect());
}
}
