CursorManager.h

//
//  Created by Bradley Austin Davis on 2015/06/08
//  Copyright 2015 High Fidelity, Inc.
//
//  Distributed under the Apache License, Version 2.0.
//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
//
 
#pragma once
#include <stdint.h>
#include <DependencyManager.h>
 
#include <GLMHelpers.h>
 
namespace Cursor {
    enum class Source {
        MOUSE,
        UNKNOWN,
    };
 
    enum Icon {
        SYSTEM,
        DEFAULT,
        LINK,
        GRAB,
        ARROW,
        RETICLE,
 
        // Add new system cursors here
 
        // User cursors will have ids over this value
        USER_BASE = 0xFF,
    };
    class Instance {
    public:
        virtual Source getType() const = 0;
        virtual void setIcon(uint16_t icon);
        virtual uint16_t getIcon() const;
    private:
        uint16_t _icon;
    };
 
    class MouseInstance : public Instance {
        Source getType() const override {
            return Source::MOUSE;
        }
    };
 
    class Manager : public QObject, public Dependency {
        SINGLETON_DEPENDENCY
 
        Manager();
        Manager(const Manager& other) = delete;
    public:
        static Manager& instance();
        uint8_t getCount();
        float getScale();
        void setScale(float scale);
        Instance* getCursor(uint8_t index = 0);
        uint16_t registerIcon(const QString& path);
        QList<uint16_t> registeredIcons() const;
        const QString& getIconImage(uint16_t icon);
 
        static QMap<uint16_t, QString> ICON_NAMES;
        static Icon lookupIcon(const QString& name);
        static const QString& getIconName(const Icon& icon);
    private:
        MouseInstance mouseInstance;
        float _scale{ 1.0f };
        QMap<uint16_t, QString> ICONS;
    };
}