83 lines
2.5 KiB
C++
83 lines
2.5 KiB
C++
/*
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Minetest
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Copyright (C) 2020 DS
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "guiScrollContainer.h"
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GUIScrollContainer::GUIScrollContainer(gui::IGUIEnvironment *env,
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gui::IGUIElement *parent, s32 id, const core::rect<s32> &rectangle,
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const std::string &orientation, f32 scrollfactor) :
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gui::IGUIElement(gui::EGUIET_ELEMENT, env, parent, id, rectangle),
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m_scrollbar(nullptr), m_scrollfactor(scrollfactor)
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{
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if (orientation == "vertical")
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m_orientation = VERTICAL;
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else if (orientation == "horizontal")
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m_orientation = HORIZONTAL;
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else
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m_orientation = UNDEFINED;
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}
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bool GUIScrollContainer::OnEvent(const SEvent &event)
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{
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if (event.EventType == EET_MOUSE_INPUT_EVENT &&
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event.MouseInput.Event == EMIE_MOUSE_WHEEL &&
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!event.MouseInput.isLeftPressed() && m_scrollbar) {
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Environment->setFocus(m_scrollbar);
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bool retval = m_scrollbar->OnEvent(event);
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// a hacky fix for updating the hovering and co.
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IGUIElement *hovered_elem = getElementFromPoint(core::position2d<s32>(
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event.MouseInput.X, event.MouseInput.Y));
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SEvent mov_event = event;
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mov_event.MouseInput.Event = EMIE_MOUSE_MOVED;
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Environment->postEventFromUser(mov_event);
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if (hovered_elem)
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hovered_elem->OnEvent(mov_event);
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return retval;
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}
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return IGUIElement::OnEvent(event);
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}
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void GUIScrollContainer::draw()
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{
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if (isVisible()) {
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core::list<IGUIElement *>::Iterator it = Children.begin();
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for (; it != Children.end(); ++it)
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if ((*it)->isNotClipped() ||
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AbsoluteClippingRect.isRectCollided(
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(*it)->getAbsolutePosition()))
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(*it)->draw();
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}
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}
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void GUIScrollContainer::updateScrolling()
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{
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s32 pos = m_scrollbar->getPos();
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core::rect<s32> rect = getRelativePosition();
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if (m_orientation == VERTICAL)
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rect.UpperLeftCorner.Y = pos * m_scrollfactor;
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else if (m_orientation == HORIZONTAL)
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rect.UpperLeftCorner.X = pos * m_scrollfactor;
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setRelativePosition(rect);
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}
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