void Scrollbar::Scroll(float delta) { if (sliderPosY <= 2.5f && sliderPosY >= -2.5f) ScrollPlus(delta); else if (sliderPosY > 2.5f) { if (delta > 0.0f) ScrollMinus(delta); if (delta < 0.0f) ScrollPlus(delta); } else if (sliderPosY < -2.5f) { if (delta > 0.0f) ScrollPlus(delta); if (delta < 0.0f) ScrollMinus(delta); } }
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; } }