💿🐜 Antkeeper source code
https://antkeeper.com
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512 lines
10 KiB
512 lines
10 KiB
/*
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* Copyright (C) 2017 Christopher J. Howard
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*
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* This file is part of Antkeeper Source Code.
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*
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* Antkeeper Source Code is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Antkeeper Source Code 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 General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Antkeeper Source Code. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "ui.hpp"
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#include "../application.hpp"
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// UI callbacks
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void menuPrint(Application* application, const std::string& string)
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{
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std::cout << string << std::endl;
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}
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UIElement::UIElement():
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parent(nullptr),
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anchor(Anchor::TOP_LEFT),
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layerOffset(0),
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layer(0),
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origin(0.0f),
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translation(0.0f),
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rotation(0.0f),
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dimensions(0.0f),
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position(0.0f),
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bounds(position, position),
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tintColor(1.0f),
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color(tintColor),
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visible(true),
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active(true),
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mouseOver(false),
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mouseOverCallback(nullptr),
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mouseOutCallback(nullptr),
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mouseMovedCallback(nullptr),
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mousePressedCallback(nullptr),
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mouseReleasedCallback(nullptr)
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{}
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UIElement::~UIElement()
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{}
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void UIElement::update()
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{
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// Calculate position
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if (parent != nullptr)
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{
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// Calculate world-space position
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Vector2 anchorPoint = parent->position + parent->dimensions * anchor - dimensions * anchor;
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position = anchorPoint + origin + translation;
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// Calculate layer
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layer = parent->layer + 1 + layerOffset;
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// Calculate color
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color = parent->color * tintColor;
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}
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else
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{
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position = origin + translation;
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layer = layerOffset;
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color = tintColor;
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}
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// Calculate bounds
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bounds.setMin(position);
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bounds.setMax(position + dimensions);
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// Update children
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for (UIElement* child: children)
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{
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child->update();
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}
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}
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void UIElement::addChild(UIElement* element)
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{
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children.push_back(element);
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element->parent = this;
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}
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void UIElement::removeChild(UIElement* element)
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{
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for (auto it = children.begin(); it != children.end(); ++it)
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{
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if (*it == element)
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{
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children.erase(it);
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return;
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}
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}
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}
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void UIElement::setMouseOverCallback(std::function<void()> callback)
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{
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mouseOverCallback = callback;
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}
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void UIElement::setMouseOutCallback(std::function<void()> callback)
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{
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mouseOutCallback = callback;
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}
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void UIElement::setMouseMovedCallback(std::function<void(int, int)> callback)
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{
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mouseMovedCallback = callback;
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}
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void UIElement::setMousePressedCallback(std::function<void(int, int, int)> callback)
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{
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mousePressedCallback = callback;
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}
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void UIElement::setMouseReleasedCallback(std::function<void(int, int, int)> callback)
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{
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mouseReleasedCallback = callback;
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}
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void UIElement::mouseMoved(int x, int y)
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{
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if (!active)
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{
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return;
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}
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if (bounds.contains(Vector2(x, y)))
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{
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if (!mouseOver)
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{
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mouseOver = true;
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if (mouseOverCallback)
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{
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mouseOverCallback();
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}
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}
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if (mouseMovedCallback)
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{
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mouseMovedCallback(x, y);
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}
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}
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else if (mouseOver)
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{
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mouseOver = false;
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if (mouseOutCallback)
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{
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mouseOutCallback();
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}
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}
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for (UIElement* child: children)
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{
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child->mouseMoved(x, y);
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}
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}
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void UIElement::mouseButtonPressed(int button, int x, int y)
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{
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if (!active)
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{
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return;
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}
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if (bounds.contains(Vector2(x, y)))
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{
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if (mousePressedCallback)
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{
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mousePressedCallback(button, x, y);
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}
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for (UIElement* child: children)
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{
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child->mouseButtonPressed(button, x, y);
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}
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}
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}
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void UIElement::mouseButtonReleased(int button, int x, int y)
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{
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if (!active)
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{
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return;
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}
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if (bounds.contains(Vector2(x, y)))
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{
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if (mouseReleasedCallback)
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{
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mouseReleasedCallback(button, x , y);
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}
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for (UIElement* child: children)
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{
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child->mouseButtonReleased(button, x, y);
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}
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}
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}
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UILabel::UILabel():
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font(nullptr)
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{}
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UILabel::~UILabel()
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{}
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void UILabel::setFont(Font* font)
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{
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this->font = font;
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material.texture = font->getTexture();
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calculateDimensions();
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}
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void UILabel::setText(const std::string& text)
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{
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this->text = text;
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calculateDimensions();
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}
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void UILabel::calculateDimensions()
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{
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if (font != nullptr && !text.empty())
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{
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float width = font->getWidth(text.c_str());
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float height = font->getMetrics().getHeight();
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setDimensions(Vector2(width, height));
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}
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else
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{
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setDimensions(Vector2(0.0f));
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}
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}
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UIImage::UIImage():
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textureBounds(Vector2(0.0f), Vector2(1.0f))
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{}
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UIImage::~UIImage()
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{}
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void UIBatcher::batch(BillboardBatch* result, const UIElement* ui)
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{
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// Create list of visible UI elements
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std::list<const UIElement*> elements;
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queueElements(&elements, ui);
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// Sort UI elements according to layer and texture
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elements.sort([](const UIElement* a, const UIElement* b)
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{
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if (a->getLayer() < b->getLayer())
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{
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return true;
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}
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else if (b->getLayer() < a->getLayer())
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{
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return false;
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}
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return (a->getMaterial()->texture < b->getMaterial()->texture);
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});
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// Clear previous ranges
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result->removeRanges();
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// Batch UI elements
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for (const UIElement* element: elements)
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{
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batchElement(result, element);
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}
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// Update batch
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result->update();
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}
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void UIBatcher::queueElements(std::list<const UIElement*>* elements, const UIElement* element) const
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{
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if (element->isVisible())
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{
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elements->push_back(element);
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for (std::size_t i = 0; i < element->getChildCount(); ++i)
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{
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queueElements(elements, element->getChild(i));
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}
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}
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}
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BillboardBatch::Range* UIBatcher::getRange(BillboardBatch* result, const UIElement* element) const
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{
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BillboardBatch::Range* range = nullptr;
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if (!result->getRangeCount())
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{
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// Create initial range
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range = result->addRange();
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range->material = (Material*)element->getMaterial();
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range->start = 0;
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range->length = 0;
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}
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else
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{
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range = result->getRange(result->getRangeCount() - 1);
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const UIMaterial* material = static_cast<UIMaterial*>(range->material);
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if (material->texture != element->getMaterial()->texture)
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{
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// Create new range for the element
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range = result->addRange();
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BillboardBatch::Range* precedingRange = result->getRange(result->getRangeCount() - 2);
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range->material = (Material*)element->getMaterial();
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range->start = precedingRange->start + precedingRange->length;
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range->length = 0;
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}
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}
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return range;
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}
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void UIBatcher::batchElement(BillboardBatch* result, const UIElement* element)
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{
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switch (element->getElementType())
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{
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case UIElement::Type::LABEL:
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batchLabel(result, static_cast<const UILabel*>(element));
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break;
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case UIElement::Type::IMAGE:
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batchImage(result, static_cast<const UIImage*>(element));
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break;
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case UIElement::Type::CONTAINER:
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break;
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default:
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break;
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}
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}
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void UIBatcher::batchLabel(BillboardBatch* result, const UILabel* label)
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{
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if (label->getFont() != nullptr && !label->getText().empty())
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{
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// Get range
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BillboardBatch::Range* range = getRange(result, label);
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// Pixel-perfect
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Vector3 origin = Vector3((int)label->getPosition().x, (int)label->getPosition().y, label->getLayer() * 0.01f);
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// Print billboards
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const Font* font = label->getFont();
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std::size_t index = range->start + range->length;
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std::size_t count = 0;
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font->puts(result, origin, label->getText().c_str(), label->getColor(), index, &count);
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// Increment range length
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range->length += count;
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}
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}
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void UIBatcher::batchImage(BillboardBatch* result, const UIImage* image)
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{
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// Get range
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BillboardBatch::Range* range = getRange(result, image);
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// Pixel-perfect
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//Vector3 translation = Vector3((int)(image->getPosition().x + image->getDimensions().x * 0.5f), (int)(image->getPosition().y + image->getDimensions().y * 0.5f), image->getLayer() * 0.01f);
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Vector3 translation = Vector3(image->getPosition() + image->getDimensions() * 0.5f, image->getLayer() * 0.01f);
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// Create billboard
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std::size_t index = range->start + range->length;
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Billboard* billboard = result->getBillboard(index);
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billboard->setDimensions(image->getDimensions());
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billboard->setTranslation(translation);
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if (image->getRotation() != 0.0f)
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{
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billboard->setRotation(glm::angleAxis(image->getRotation(), Vector3(0, 0, -1.0f)));
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}
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billboard->setTextureCoordinates(image->getTextureBounds().getMin(), image->getTextureBounds().getMax());
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billboard->setTintColor(image->getColor());
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// Increment range length
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++(range->length);
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}
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MenuItem::MenuItem(Menu* parent, std::size_t index):
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parent(parent),
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index(index),
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selected(false),
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selectedCallback(nullptr),
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deselectedCallback(nullptr),
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activatedCallback(nullptr)
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{}
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void MenuItem::select()
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{
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if (!selected)
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{
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selected = true;
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if (selectedCallback != nullptr)
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{
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selectedCallback();
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}
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}
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}
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void MenuItem::deselect()
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{
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if (selected)
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{
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selected = false;
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if (deselectedCallback != nullptr)
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{
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deselectedCallback();
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}
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}
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}
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void MenuItem::activate()
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{
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if (activatedCallback != nullptr)
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{
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activatedCallback();
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}
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}
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void MenuItem::setSelectedCallback(std::function<void()> callback)
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{
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this->selectedCallback = callback = callback;
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}
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void MenuItem::setDeselectedCallback(std::function<void()> callback)
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{
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this->deselectedCallback = callback;
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}
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void MenuItem::setActivatedCallback(std::function<void()> callback)
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{
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this->activatedCallback = callback;
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}
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Menu::Menu():
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enteredCallback(nullptr),
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exitedCallback(nullptr)
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{}
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Menu::~Menu()
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{
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for (MenuItem* item: items)
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{
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delete item;
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}
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}
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void Menu::enter()
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{
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if (enteredCallback != nullptr)
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{
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enteredCallback();
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}
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}
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void Menu::exit()
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{
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if (exitedCallback != nullptr)
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{
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exitedCallback();
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}
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}
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MenuItem* Menu::addItem()
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{
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MenuItem* item = new MenuItem(this, items.size());
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items.push_back(item);
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return item;
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}
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void Menu::removeItems()
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{
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for (MenuItem* item: items)
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{
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delete item;
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}
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items.clear();
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}
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void Menu::setEnteredCallback(std::function<void()> callback)
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{
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this->enteredCallback = callback;
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}
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void Menu::setExitedCallback(std::function<void()> callback)
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{
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this->exitedCallback = callback;
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}
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