78 lines
2.5 KiB
C++
78 lines
2.5 KiB
C++
/*
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* =====================================================================================
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*
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* OpenMiner
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*
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* Copyright (C) 2018-2020 Unarelith, Quentin Bazin <openminer@unarelith.net>
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* Copyright (C) 2019-2020 the OpenMiner contributors (see CONTRIBUTORS.md)
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*
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* This file is part of OpenMiner.
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*
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* OpenMiner is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* OpenMiner 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with OpenMiner; 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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* =====================================================================================
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*/
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#include <gk/core/Debug.hpp>
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#include "Config.hpp"
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#include "ScrollBarWidget.hpp"
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void ScrollBarWidget::init(const gk::Texture &texture, const gk::FloatRect &clipRect, u16 minY, u16 maxY, InventoryWidget &widget) {
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m_clipRect = clipRect;
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m_minY = minY;
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m_maxY = maxY;
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m_width = m_barWidth;
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m_height = m_maxY - m_minY + m_barHeight;
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m_widget = &widget;
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m_image.load(texture);
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m_image.setClipRect(m_clipRect.x, m_clipRect.y, m_clipRect.sizeX, m_clipRect.sizeY);
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}
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void ScrollBarWidget::onEvent(const SDL_Event &event) {
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if (event.type == SDL_MOUSEBUTTONDOWN && event.button.button == SDL_BUTTON_LEFT) {
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if (isPointInWidget(event.button.x, event.button.y)) {
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m_isDragging = true;
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updateScrolling(event.button.y);
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}
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}
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else if (event.type == SDL_MOUSEBUTTONUP && event.button.button == SDL_BUTTON_LEFT) {
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m_isDragging = false;
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}
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else if (event.type == SDL_MOUSEMOTION && m_isDragging) {
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updateScrolling(event.motion.y);
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}
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}
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void ScrollBarWidget::draw(gk::RenderTarget &target, gk::RenderStates states) const {
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states.transform *= getTransform();
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target.draw(m_image, states);
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}
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void ScrollBarWidget::updateScrolling(u16 y) {
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s16 imageY = y - getPosition().y * Config::guiScale - m_parent->getPosition().y;
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m_image.setPosition(0, glm::clamp<s16>(imageY / Config::guiScale - m_barHeight / 2, m_minY, m_maxY));
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m_scrolling = m_image.getPosition().y / (m_maxY - m_minY);
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m_widget->scroll(m_scrolling);
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}
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