C language drawing example - palette

C Language drawing example － palette

16m True color palette Design and manufacture  
PhotoShop,AutoCad,3DS,Paint And other graphics and image painting applications have a true color palette , For the user to draw color with the brush .16m Color is all the colors commonly known as true color .
I try to make trademark logo making software , Also make this true color palette , Today I share with you , Hope you enjoy it .
True color palette drawing , Brush color , Application synchronization drawing palette . Big palette 16m Color settings , Minor palette color separation setting , For the brush to color .
For application examples, please refer to my blog post palette settings VB6 Source code .
Step 8  ,  Step 4  ,   To improve the display speed of palette drawing , This chroma cannot be distinguished by the naked eye .Step 1  ,   Full tone mode , Drawing speed is slow , You can draw... When the program starts .

I use it on my Android phone in my spare time myspringc Graphic drawing examples written in language , It can be used as a reference for your favorite friends . The biggest advantage of the example program I have compiled is that the pattern changes at any time , Color changes randomly at any time , It's quite ornamental . Add another key to automatically demonstrate all examples .

MySpringC You can not only write simple C Language program , And it can read the values of various sensors in the mobile phone , Control various multimedia devices , So that ordinary users can use C Language controlled mobile phone , Write unexpected 、 Applications suitable for your own use .

The sample picture ：

Here is the source code ：
//   The simplest C Language programming
//  myspringc  v2.7   Compile Android native app application
//   This sample can be copied and pasted to myspringc   compile
//   This document is available VB,VC  ,  java rewrite
//***************************************
//****   C Language drawing example － palette  *******
//***************************************
Canvas cs ;     // canvas
string sBarDes[10];
int nBarId[10];
string sMenu[50];
int nMenu[50];
float src[4];  //ClearDraw (cls) clear screen
string s,ss,ss1,ss2,ss3;
float sx,sy,dx,dy;
float px,py;
int size[2];
int i,j,n,t,k;    //t=times,n=number
double sn;    //mode number
 int r1,g1,b1;     //16m Panchromatic palette

main(){
setDisplay(1);
  cs.SetBackground(205,205,205);
  cs.Active();

   sBarDes[0]=" Play   in ";
   nBarId[0]=100;
   sBarDes[1]=" ";
   nBarId[1]=101;
   sBarDes[2]=" ";
   nBarId[2]=102;
   sBarDes[3]="  ";
   nBarId[3]=103;
   sBarDes[4]=" Exit procedure ";
   nBarId[4]=104;
   sBarDes[5]=" ";
   nBarId[5]=105;
   setToolBarHeight(6);
   setButtonTextSize(14);
   setToolBarBackgroundColor(255,192,192,192);
   setButtonColor(255,0,0,240);
   setButtonTextColor(255,255,255,0);
   setToolBar(100,myToolBarProc,sBarDes,nBarId,6);

  setTitle(" Palette design   ");
  sn=0;     show_pad();     // When the program starts, draw
while (){}
  }//main ()

show_pad (){ // Demonstration sequence
  if (sn==0) colorpad1 ();
  if (sn==1) colorpad2 ();

}//show_pad ()

colorpad1 (){
     cs.SetFillMode (1);//0 No coloring ,1 Colouring
        cs.SetColor (255,0,0,0);
        cs.DrawRect (0,4,720,600);
        cs.SetTextSize (30);    //*** (1) ****
        cs.SetColor (255,240,240,0);
        cs.DrawText (" True color palette ",20,35);
         n=(int)(sn);
        s=intToString (n);
        ss="mode = "+s ;
        cs.DrawText (ss,550,35);
        cs.Update ();
    //****  16m Full color true color palette
// With 8 Change color for segment , Reduce the display time .
// This is a simulation demonstration , Color palette to draw point by point
// The machine is fast and can draw point by point
// Plot width 255＊3 , Picture height 255
// draw Picture frame calibration ：sx = 3 * 256 , sy = 256
//   canvas.Scale (0, 0)-(768, 255)
//  r1 = 0: g1 = 255: b1 = 255
    //blue
//    for (sx=0;sx<256;sx++){     //blue *******
//         r1 = sx
//       for (sy=0;sy<256;sy++){   
//              g1 = 255 - sy
//      cs.SetColor (255,r1,g1,b1);
//     cs.DrawRect (sx+50,sy+90,sx+50,sy+90); 
//            cs.Update ();     // Show and draw the process
//             }   }
//      r1= 255; g1= 255; b1= 255;     //green
//      for (sx=256;sx<512;sx++){    // green ********
//           r1=512- sx +255;   b1=512 - sx; 
 //     for (sy=0;sy<256;sy++){     
 //          g1= 255 - sy;   
 //          cs.SetColor (255,r1,g1,b1);
 //     cs.DrawRect (sx+50,sy+90,sx+50,sy+90); 
//             cs.Update ();     // Show and draw the process
//                }  }
//      r1= 0; g1= 255; b1= 0;     //red
//      for (sx=513;sx<769;sx++){    // red ********
//           r1=513- sx +255;   
//      for (sy=0;sy<256;sy++){     
//          g1= 255 - sy;   
//           cs.SetColor (255,r1,g1,b1);
//     cs.DrawRect (sx+50,sy+90,sx+50,sy+90); 
//             cs.Update ();     // Show and draw the process
//                }  }
//********
       r1= 0; g1= 255; b1= 255;   //blue
      for (i=0;i<32;i++){     // blue ********
             r1=i*8;       sx=i*6;
     for (j=0;j<32;j++){     
             g1=255-j*8;   sy=j*8;
             cs.SetColor (255,r1,g1,b1);
       cs.DrawRect (sx+50,sy+90,sx+58,sy+98); 
            //  cs.Update ();     // Show and draw the process
                }   }
      r1= 255; g1= 255; b1= 255;    //green
       for (i=32;i<64;i++){    // green ********
            r1=511- i*8 +255;   b1=511- i*8; sx=i*6;
       for (j=0;j<32;j++){     
            g1= 255 - j*8;   sy=j*8 ;
            cs.SetColor (255,r1,g1,b1);
       cs.DrawRect (sx+50,sy+90,sx+58,sy+98); 
               cs.Update ();     // Show and draw the process
                  }  }
        r1 = 0; g1 = 255; b1 = 0;    //red
      for (i=64;i<96;i++){    // red ********
              r1= i*8-511+255;  sx=i*6 ;
      for (j=0;j<32;j++){
             g1=255 -j*8;   sy=j*8 ;
             cs.SetColor (255,r1,g1,b1);
       cs.DrawRect (sx+50,sy+90,sx+58,sy+98); 
             //  cs.Update ();     // Show and draw the process
                }    }
    cs.SetColor (255,240,200,100);
    cs.SetTextSize (40);    
    cs.DrawText (" 16m color   True color palette Example ",110,400);
        cs.Update ();
}//colorpad1 ()

colorpad2 (){
    cs.SetFillMode (1);//0 No coloring ,1 Colouring
        cs.SetColor (255,0,0,0);
        cs.DrawRect (0,4,720,600);
        cs.SetColor (255,200,250,0);
        cs.SetTextSize (30);    //*** (2) ****
        cs.DrawText (" Seven color ribbon palette ",20,35);
        n=(int)(sn);
        s=intToString (n);
        ss="mode = "+s ;
        cs.DrawText (ss,550,35);
        cs.Update ();
     for (i=0;i<256;i++){  // Seven color ribbon (2) palette
            cs.SetColor (255,255,i,0);
                cs.DrawLine (i/2+50,350,i/2+50,550);
                cs.DrawLine (600,i/2+40,710,i/2+40);
           cs.SetColor (255,255-i,255,0);
                cs.DrawLine (i/2+178,350,i/2+178,550);
                cs.DrawLine (600,i/2+168,710,i/2+168);
          cs.SetColor (255,0,255-i/2,i);
                cs.DrawLine (i/2+306,350,i/2+306,550);
                cs.DrawLine (600,i/2+296,710,i/2+296);
             //  cs.Update ();     // Show and draw the process
                     }
     for (i=0;i<256;i++){  // Seven color ribbon palette
           cs.SetColor (255,i/2,128-i/2,255);
                cs.DrawLine (i/2+434,350,i/2+434,550);
                cs.DrawLine (600,i/2+424,710,i/2+424);
              cs.Update ();     // Show and draw the process
                    }
     cs.SetFillMode (0);//0 No coloring ,1 Colouring
           cs.SetColor (255,255,255,255);
     cs.DrawRect (50,50,560,300);
     cs.DrawRect (50,350,560,550);
        cs.SetColor (255,240,200,100);
        cs.SetTextSize (40);    
        cs.DrawText (" Seven color ribbon palette Example ",110,190);

            cs.Update ();
}//colorpad2 ()

myToolBarProc(int nBtn,int nContext){
      if(nBtn==100){// demonstration
          cs.SetBackground(245,245,245);
          setDisplay (1);
      sn=sn+1;
             if (sn>1) sn=0 ;    
             show_pad ();
                       }  
      if(nBtn==101){//mode+
            sn=sn+1;
            if (sn>9)sn=9;
            show_pad ();
            }
      if(nBtn==102){//mode -
            sn=sn-1;
            if (sn<1)sn=1;
            show_pad ();
             }
      if(nBtn==103){// Display board
           setDisplay (1);
         }

      if(nBtn==104){// Exit procedure
         clearOutput();
         cs.ClearDraw (0,src);
         setDisplay (0);
          exit (0);
         }
     if(nBtn==105){// 
          setDisplay (1);
          //cover ();   
          }
}//myToolBar ()

//== End ==