/**

 * @file buttonsqt.cpp

 * @brief Demo Application to test some new interface functions of HighGUI-Module        

 * @author Harald Schmidt

 */

#include "opencv/cv.h"

#include "opencv2/imgproc/imgproc.hpp"

#include "opencv2/highgui/highgui.hpp"

#include <iostream>

#ifdef _WIN32

    #include <io.h>             // _findfirst, _findnext

#else

    #include <unistd.h>

    #include <dirent.h>

#endif

using namespace cv;

using namespace std;

/**

 * @function UpdateContent

 * @brief Interface-Function to set content in buttonbar

 */

void UpdateContent( string strpos, string name )

{

    try {

        setButtonBarContent("ColorImg", EMOD_Label, 1, (char *) strpos.c_str());

        setButtonBarContent("ColorImg", EMOD_Label, 2, (char *) name.c_str());

    }

    catch (const std::exception &e)

    {

        std::cout << "setButtonBarContent Error: " << e.what() << endl;

    }

    printf("\n");

}

/**

 * @function main

 * @brief Main function

 */

int main( int argc, char** argv )

{

    Mat img;

    Mat imgArray[5];

    string nameVec[5];

    string missing = "";

    double ticks = (double) getTickCount();

    int sec = ticks / getTickFrequency();

    int randomcode = (sec %2);  

    int WinMode = CV_WINDOW_NORMAL;

    if ( randomcode == 0 ) 

    { 

       WinMode = CV_WINDOW_AUTOSIZE;

       printf("\nstartUpMode: CV_WINDOW_AUTOSIZE\n" );

    } else {

       printf("\nstartUpMode: CV_WINDOW_NORMAL\n" );

    }

    cv::namedWindow("ColorImg", WinMode);

    nameVec[0] = "baboon.jpg";

    nameVec[1] = "board.jpg";

    nameVec[2] = "building.jpg";

    nameVec[3] = "fruits.jpg";

    nameVec[4] = "lena.jpg";

    int cnt =0;

    for ( int i=0; i < 5 ; i++ )

    {

        img = cv::imread(nameVec[i]);

        if ( img.empty() ) {

            missing += nameVec[i] + "\n";

        } else {

            imgArray[cnt] = img;

            cnt++;

        }

    }

    if ( cnt < 5 )

    {

        string info = "Sorry, missing images !\nPlease copy following images to executable dir:\n";

        info += missing;

                printf("------\n%s------", info.c_str() );

        cv::dispInfoBox( "ColorImg", "New Function Info", info );

        randomcode = 2;

        if ( cnt <= 0 ) return 0;

    }

    bool USE_hms   = false;

    int iKey = 999;

    int iSaveQ = 0;

    if ( randomcode == 0 )

    {

       setButtonBarContent("ColorImg", EMOD_Label, 3, "<font color=blue>AUTOSIZE</font>");

    }

    if ( randomcode == 1 )

    {

       setButtonBarContent("ColorImg", EMOD_Label, 3, "<font color=green>NORMAL</font>");

    } 

    if ( randomcode == 2 )

    {

       setButtonBarContent("ColorImg", EMOD_Label, 3, "<font color=red>wrong FILENAMES</font>");

    }

    //--------------------------------------------

    std::vector<std::string> stringVec;

    // call with two parameters => fetch field content only

    //             cv::getCommandVec("ColorImg", stringVec )

    // call with three parameters => fetch field content + command 

    //             cv::getCommandVec("ColorImg", stringVec, csBuffer )

    if ( cv::getCommandVec("ColorImg", stringVec ) )

    {

        printf("\n\ninitial values:" );

        for ( int j=0; j < stringVec.size() ; j++ )

        {

            printf("\n  <%s>", stringVec[j].c_str() );

            // may me you have activated checkbox in *.cfg ....

            if ( stringVec[j] == "h:m:s|1"   ) USE_hms  = true;

        }

    }

    // move window to x1=25% of screen width on startup

    // window width=50% of screen is ignored in case of CV_WINDOW_AUTOSIZE

    cv::adjustWindowPos( "ColorImg",25,50, 0, 90 );

    int idx = 0;

    //---------------------------  Start of processing loop

    while (iKey != 27)

    {

        char csBuffer[255];

        csBuffer[0] = 0;

        if ( iKey > 0 )

        {

            cv::imshow("ColorImg", imgArray[idx]);

            char csTmp[255];

            sprintf(csTmp,"%d/%d", idx+1, cnt );

            string strPos = string(csTmp);

            UpdateContent( strPos, nameVec[idx] );

        }

        iKey = cv::waitKey(5);

        //------------------------ some events from ColorImg  ?

        cv::getCommandVec("ColorImg", stringVec,  csBuffer );

        if ( strlen(csBuffer) > 0  )

        {

            printf("\ngetCommandVec(ColorImg)->[%s]\n  ", csBuffer );

            string strCmd = string(csBuffer);

            for ( int j=0; j < stringVec.size() ; j++ )

            {

                printf("<%s>", stringVec[j].c_str() );

                if ( stringVec[j] == "h:m:s|1"  ) USE_hms  = true;

                if ( stringVec[j] == "h:m:s|0"  ) USE_hms  = false;

                // ------------- content of SpinField :

                int ipos = stringVec[j].find("JPGQ");

                if ( ipos >= 0 )

                {

                    ipos = stringVec[j].find("|");

                    iSaveQ = atoi(&stringVec[j][ipos+1]);

                    iKey = '*';

                }

            }

            if (strCmd == "LoadImg") iKey = 'l';

            if (strCmd == "SaveImg") iKey = 's';

            if (strCmd == "PrevImg") iKey = 'p';

            if (strCmd == "NextImg") iKey = 'n';

            if (strCmd == "Help_EMOD_PushText")  iKey = 'h';

            if (strCmd == "h:m:s_EMOD_CheckBox")

            {

                printf("\n use_hms=%d ", (int) USE_hms );

            }

        }

        if ( iKey == ' ') iKey = 'n';

        if ( iKey == 'p')

        {

            idx--;

            if (idx < 0) idx = 0;

        }

        if ( iKey == 'n')

        {

            idx++;

            if (idx >= cnt) idx = 0;

        }

        if ( iKey == 's')

        {

            char szParam[64];

            sprintf(szParam,"_Q%02d", iSaveQ  );

            vector<int> ParamV;

            ParamV.resize(2);

            ParamV[0] = CV_IMWRITE_JPEG_QUALITY;

            ParamV[1] = iSaveQ;

            string filename = "SaveImg";

            if ( USE_hms ) {

                int tick =  0.001 * getTickCount() ;

                sprintf(csBuffer,"%010d", tick);

                filename += string(csBuffer);

                filename += string(szParam) + ".jpg";

            } else {

                string savename = nameVec[idx];

                int ipos = savename.find_last_of(".");

                filename = savename.substr(0,ipos);

                filename += string(szParam) + ".jpg";

            }

            cv::imwrite(filename,imgArray[idx],ParamV);

            printf("\nfile [%s] written ", filename.c_str() );

        }

        if ( iKey == 'h')

        {

            printf("\n >>>> demo for use of buttons from *.cfg <<<<");

            string info = "Please open the *.cfg file fitting to the *.exe you are working on.\nThe HighGUI-DLL has interpreted this *.cfg file ";

            info += "and if yo want so see,\nwhat the DLL does with the *.cfg file, one approch is to activate \n     $verbose\nby taking ";

            info += "the comment char '#' in the fitting line away. Thus you will get a \nconsole logging of the DLL activities.";

            cv::dispInfoBox( "ColorImg", "New Function Info", info );

            info  = "The simplest way to insert a button ist just one line :\n My simple Button \n";

            info += "In such a case no name for the button is needed and the HighGui-DLL stores \ninternal that you have pressed this button. ";

            info += "Your App says then to the DLL: \n   Give me the name of the last clicked button.\nIn your sorce code you just call:\n";

            info += "     cvGetCommandVec(\"ColorImg\", stringVec, csBuffer );\n";

            info += "And csBuffer will be will filled with the last command.";

            cv::dispInfoBox( "ColorImg", "New Function Info", info );

            info = "If <LanguageTransTab> is defined, you can activate\n   $applyLanguage \nto get some button names translated.";

            info += "This makes sense because getCommandVec gives you the original name back.";

            cv::dispInfoBox( "ColorImg", "New Function Info", info );

            info =  "All buttons without frame (QToolButton) appear in the context menu too.\nFor this type of button only one word (without leading $) is necessary in *.cfg\n";

            cv::dispInfoBox( "ColorImg", "New Function Info", info );

            info = "There is no keyword 'emit' in the definition:\n  $Spin JPGQ 0,100,75 \nWe dont want to have any action until 'SaveImg' is pressed.";

            cv::dispInfoBox( "ColorImg", "New Function Info", info );

            char msg4[] = "If you see 'SaveImg' and '$SaveImg' in different lines of *.cfg \nkeep in mind '$SaveImg' to be the floppy disk icon-button  ";

            cv::dispInfoBox( "ColorImg", "New Function Info", msg4 );

            char msg5[] = "This box is internal displayed by\nQMessageBox::information( this, pCaption,pInfo )\nas part of the opencv_highgui24*.dll";

            cv::dispInfoBox( "ColorImg", "New Function Info", msg5 );

        }

    } // waitKey loop

    destroyAllWindows();        

    return 0;

}