/*
 *  Emu80 v. 4.x
 *  © Viktor Pykhonin <pyk@mail.ru>, 2016-2025
 *
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef EMUWINDOW_H
#define EMUWINDOW_H

#include <string>
#include <map>

#include "Pal.h"
#include "PalWindow.h"

#include "EmuTypes.h"
#include "EmuObjects.h"


class Emulation;

class PalWindow;

enum FrameScale {
    FS_BEST_FIT,
    FS_FIXED,
    FS_FIT,
};

enum FieldsMixing {
    FM_NONE,
    FM_MIX,
    FM_AVERAGE,
    FM_INTERLACE,
    FM_SCANLINE
};

enum WindowStyle {
    WS_AUTOSIZE,
    WS_FIXED,
    WS_RESIZABLE
};


class EmuWindow : public EmuObject, public PalWindow
{
    public:
        EmuWindow();
        virtual ~EmuWindow();

        bool setProperty(const std::string& propertyName, const EmuValuesList& values) override;
        std::string getPropertyStringValue(const std::string& propertyName) override;

        void init() override;

        void calcDstRect(int srcWidth, int srcHeight, double srcAspectRatio, int wndWidth, int wndHeight, int& dstWidth, int& dstHeight, int& dstX, int& dstY) override;

        void mouseDrag(int x, int y) override;

        virtual void processKey(PalKeyCode, bool) {}
        virtual void closeRequest() {}

        virtual bool translateCoords(int& x, int& y);

        void sysReq(SysReq sr);

        void show();
        void hide();
        void setDefaultWindowSize(int width, int height);
        void setCaption(std::string caption);
        void setFrameScale(FrameScale fs);
        void setFixedYScale(double yScale);
        void setFieldsMixing(FieldsMixing fm);
        void setWindowStyle(WindowStyle ws);
        void setSmoothing(SmoothingType smoothing);
        void setFullScreen(bool fullscreen);
        void setAspectCorrection(bool aspectCorrection);
        void setWideScreen(bool wideScreen);
        void setCustomScreenFormat(bool custom);
        void setCustomScreenFormatValue(double format);
        void setSquarePixels(bool squarePixels);
        void toggleFullScreen();

        void drawFrame(EmuPixelData frame);
        void drawOverlay(EmuPixelData frame);
        void endDraw();

        bool isVisible() {return m_params.visible;}

        std::string getCaption();

        std::string getPlatformObjectName() override;

        static EmuObject* create(const EmuValuesList&) {return new EmuWindow();}

    private:
        int m_defWindowWidth = 800;
        int m_defWindowHeight = 600;

        int m_curWindowWidth;
        int m_curWindowHeight;

        bool m_isFullscreenMode = false;
        bool m_aspectCorrection = false;
        bool m_wideScreen = false;
        bool m_useCustomScreenFormat = false;
        double m_customScreenFormat = 5. / 3.;
        bool m_squarePixels = false;

        std::string m_caption = "";

        FrameScale m_frameScale = FS_BEST_FIT;
        FieldsMixing m_fieldsMixing = FM_NONE;
        WindowStyle m_windowStyle = WS_AUTOSIZE;
        SmoothingType m_smoothing = ST_SHARP;
        double m_scaleY;
        std::string m_shader = "none";

        int m_curImgWidth = 0;
        int m_curImgHeight = 0;

        int m_dstX;
        int m_dstY;
        int m_dstWidth;
        int m_dstHeight;

        void interlaceFields(EmuPixelData frame);
        void mixFields(EmuPixelData frame);
        void prepareScanline(EmuPixelData frame);

        uint32_t* m_interlacedImage = nullptr;
        int m_interlacedImageSize = 0;

        unsigned m_curFrameNo = unsigned(-1);
        bool m_frameDrawn = false;

        double calcBestAspectRatio(double srcAspectRatio, double scaleY);
        /*bool m_overlay = false;
        double m_primaryFrameAspectRatio = 1;*/

        const uint8_t c_srgb2linearTbl[256] = {
            0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01,
            0x01,0x01,0x02,0x02,0x02,0x02,0x02,0x02,0x02,0x02,0x03,0x03,0x03,0x03,0x03,0x03,
            0x04,0x04,0x04,0x04,0x04,0x05,0x05,0x05,0x05,0x06,0x06,0x06,0x06,0x07,0x07,0x07,
            0x08,0x08,0x08,0x08,0x09,0x09,0x09,0x0A,0x0A,0x0A,0x0B,0x0B,0x0C,0x0C,0x0C,0x0D,
            0x0D,0x0D,0x0E,0x0E,0x0F,0x0F,0x10,0x10,0x11,0x11,0x11,0x12,0x12,0x13,0x13,0x14,
            0x14,0x15,0x16,0x16,0x17,0x17,0x18,0x18,0x19,0x19,0x1A,0x1B,0x1B,0x1C,0x1D,0x1D,
            0x1E,0x1E,0x1F,0x20,0x20,0x21,0x22,0x23,0x23,0x24,0x25,0x25,0x26,0x27,0x28,0x29,
            0x29,0x2A,0x2B,0x2C,0x2D,0x2D,0x2E,0x2F,0x30,0x31,0x32,0x33,0x33,0x34,0x35,0x36,
            0x37,0x38,0x39,0x3A,0x3B,0x3C,0x3D,0x3E,0x3F,0x40,0x41,0x42,0x43,0x44,0x45,0x46,
            0x47,0x48,0x49,0x4A,0x4C,0x4D,0x4E,0x4F,0x50,0x51,0x52,0x54,0x55,0x56,0x57,0x58,
            0x5A,0x5B,0x5C,0x5D,0x5F,0x60,0x61,0x63,0x64,0x65,0x67,0x68,0x69,0x6B,0x6C,0x6D,
            0x6F,0x70,0x72,0x73,0x74,0x76,0x77,0x79,0x7A,0x7C,0x7D,0x7F,0x80,0x82,0x83,0x85,
            0x86,0x88,0x8A,0x8B,0x8D,0x8E,0x90,0x92,0x93,0x95,0x97,0x98,0x9A,0x9C,0x9D,0x9F,
            0xA1,0xA3,0xA4,0xA6,0xA8,0xAA,0xAB,0xAD,0xAF,0xB1,0xB3,0xB5,0xB7,0xB8,0xBA,0xBC,
            0xBE,0xC0,0xC2,0xC4,0xC6,0xC8,0xCA,0xCC,0xCE,0xD0,0xD2,0xD4,0xD6,0xD8,0xDA,0xDC,
            0xDE,0xE0,0xE2,0xE5,0xE7,0xE9,0xEB,0xED,0xEF,0xF2,0xF4,0xF6,0xF8,0xFA,0xFD,0xFF
        };

        const uint8_t c_linear2srgbTbl[256] = {
            0x00,0x0D,0x16,0x1C,0x22,0x26,0x2A,0x2E,0x32,0x35,0x38,0x3B,0x3D,0x40,0x42,0x45,
            0x47,0x49,0x4B,0x4D,0x4F,0x51,0x53,0x55,0x56,0x58,0x5A,0x5C,0x5D,0x5F,0x60,0x62,
            0x63,0x65,0x66,0x68,0x69,0x6A,0x6C,0x6D,0x6E,0x70,0x71,0x72,0x73,0x75,0x76,0x77,
            0x78,0x79,0x7A,0x7C,0x7D,0x7E,0x7F,0x80,0x81,0x82,0x83,0x84,0x85,0x86,0x87,0x88,
            0x89,0x8A,0x8B,0x8C,0x8D,0x8E,0x8F,0x90,0x91,0x92,0x93,0x94,0x94,0x95,0x96,0x97,
            0x98,0x99,0x9A,0x9B,0x9B,0x9C,0x9D,0x9E,0x9F,0x9F,0xA0,0xA1,0xA2,0xA3,0xA3,0xA4,
            0xA5,0xA6,0xA7,0xA7,0xA8,0xA9,0xAA,0xAA,0xAB,0xAC,0xAD,0xAD,0xAE,0xAF,0xAF,0xB0,
            0xB1,0xB2,0xB2,0xB3,0xB4,0xB4,0xB5,0xB6,0xB6,0xB7,0xB8,0xB9,0xB9,0xBA,0xBB,0xBB,
            0xBC,0xBD,0xBD,0xBE,0xBE,0xBF,0xC0,0xC0,0xC1,0xC2,0xC2,0xC3,0xC4,0xC4,0xC5,0xC5,
            0xC6,0xC7,0xC7,0xC8,0xC8,0xC9,0xCA,0xCA,0xCB,0xCB,0xCC,0xCD,0xCD,0xCE,0xCE,0xCF,
            0xD0,0xD0,0xD1,0xD1,0xD2,0xD2,0xD3,0xD4,0xD4,0xD5,0xD5,0xD6,0xD6,0xD7,0xD7,0xD8,
            0xD8,0xD9,0xDA,0xDA,0xDB,0xDB,0xDC,0xDC,0xDD,0xDD,0xDE,0xDE,0xDF,0xDF,0xE0,0xE0,
            0xE1,0xE2,0xE2,0xE3,0xE3,0xE4,0xE4,0xE5,0xE5,0xE6,0xE6,0xE7,0xE7,0xE8,0xE8,0xE9,
            0xE9,0xEA,0xEA,0xEB,0xEB,0xEC,0xEC,0xED,0xED,0xEE,0xEE,0xEE,0xEF,0xEF,0xF0,0xF0,
            0xF1,0xF1,0xF2,0xF2,0xF3,0xF3,0xF4,0xF4,0xF5,0xF5,0xF6,0xF6,0xF6,0xF7,0xF7,0xF8,
            0xF8,0xF9,0xF9,0xFA,0xFA,0xFB,0xFB,0xFB,0xFC,0xFC,0xFD,0xFD,0xFE,0xFE,0xFF,0xFF
        };

};

#endif // EMUWINDOW_H
