OpenSpace/include/openspace/engine/windowdelegate.h

/*****************************************************************************************
 *                                                                                       *
 * OpenSpace                                                                             *
 *                                                                                       *
 * Copyright (c) 2014-2025                                                               *
 *                                                                                       *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of this  *
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 * permit persons to whom the Software is furnished to do so, subject to the following   *
 * conditions:                                                                           *
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 * The above copyright notice and this permission notice shall be included in all copies *
 * or substantial portions of the Software.                                              *
 *                                                                                       *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,   *
 * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A         *
 * PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT    *
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 ****************************************************************************************/

#ifndef __OPENSPACE_CORE__WINDOWDELEGATE___H__
#define __OPENSPACE_CORE__WINDOWDELEGATE___H__

#include <ghoul/glm.h>
#include <vector>

namespace openspace {

struct WindowDelegate {
    enum class Frustum { Mono, LeftEye, RightEye };

    enum class Cursor { Arrow, IBeam, CrossHair, PointingHand, ResizeEW, ResizeNS,
        ResizeNWSE, ResizeNESW, ResizeAll, NotAllowed };

    void (*terminate)() = [](){};

    void (*setBarrier)(bool enabled) = [](bool) {};

    void (*setSynchronization)(bool enabled) = [](bool) {};

    bool (*windowHasResized)() = []() { return false; };
    bool (*anyWindowHasResized)() = []() { return false; };

    double (*averageDeltaTime)() = []() { return 0.0; };

    double (*minDeltaTime)() = []() { return 0.0; };

    double (*maxDeltaTime)() = []() { return 0.0; };

    double (*deltaTimeStandardDeviation)() = []() { return 0.0; };

    double (*deltaTime)() = []() { return 0.0; };

    double (*applicationTime)() = []() { return 0.0; };

    glm::ivec2 (*currentWindowSize)() = []() { return glm::ivec2(0); };

    glm::ivec2 (*currentSubwindowSize)() = []() { return glm::ivec2(0); };

    glm::ivec2 (*currentDrawBufferResolution)() = []() { return glm::ivec2(0); };

    glm::ivec2 (*currentViewportSize)() = []() { return glm::ivec2(0); };

    glm::ivec2(*currentViewportResolution)() = []() { return glm::ivec2(0); };

    glm::vec2 (*dpiScaling)() = []() { return glm::vec2(1.f); };

    glm::ivec2(*firstWindowResolution)() = []() { return glm::ivec2(0); };

    glm::ivec2(*guiWindowResolution)() = []() { return glm::ivec2(0); };

    float (*osDpiScaling)() = []() { return 1.f; };

    bool (*hasGuiWindow)() = []() { return false; };

    bool (*isGuiWindow)() = []() { return false; };

    bool (*isMaster)() = []() { return true; };

    glm::mat4 (*modelMatrix)() = []() { return glm::mat4(1.f); };

    void (*setNearFarClippingPlane)(float near, float far) = [](float, float) {};

    bool (*isFisheyeRendering)() = []() { return false; };

    unsigned int (*takeScreenshot)(bool applyWarping, std::vector<int> windowIds) =
        [](bool, std::vector<int>) { return 0u; };

    void (*resetScreenshotNumber)() = []() {};

    void (*swapBuffer)() = []() {};

    size_t (*nWindows)() = []() { return size_t(0); };

    int (*currentWindowId)() = []() { return 0; };

    int (*firstWindowId)() = []() { return 0; };

    std::string (*nameForWindow)(size_t windowIdx) = [](size_t) { return std::string(); };

    float (*horizFieldOfView)(size_t windowIdx) = [](size_t) { return 0.f; };

    void (*setHorizFieldOfView)(size_t windowIdx, float hFovDeg) = [](size_t, float) {};

    void* (*getNativeWindowHandle)(size_t windowIndex) = [](size_t) -> void* {
        return nullptr;
    };

    using GLProcAddress = void(*)(void);

    GLProcAddress (*openGLProcedureAddress)(const char*) =
        [](const char*) -> GLProcAddress { return []() {}; };

    Frustum (*frustumMode)() = []() { return Frustum::Mono; };

    uint64_t (*swapGroupFrameNumber)() = []() { return uint64_t(0); };

    void (*setScreenshotFolder)(std::filesystem::path) = [](std::filesystem::path) {};

    void (*showStatistics)(bool) = [](bool) {};

    int (*numberOfNodes)() = []() { return 0; };

    int (*currentNode)() = []() { return 0; };

    glm::vec2 (*mousePositionViewportRelative)(const glm::vec2& mousePosition) =
        [](const glm::vec2&) { return glm::vec2(0); };

    void (*setStatisticsGraphScale)(float scale) = [](float) {};
    void (*setStatisticsGraphOffset)(glm::vec2 offset) = [](glm::vec2) {};

    void (*setMouseCursor)(Cursor cursor) = [](Cursor) {};
};

} // namespace openspace

#endif // __OPENSPACE_CORE__WINDOWDELEGATE___H__