GraphicsDisplay.cpp

00001 /* mbed UniGraphic library - Graphics class
00002  * Copyright (c) 2015 Giuliano Dianda
00003  * Released under the MIT License: http://mbed.org/license/mit
00004  *
00005  * Derived work of:
00006  *
00007  * mbed GraphicsDisplay Display Library Base Class
00008  * Copyright (c) 2007-2009 sford
00009  * Released under the MIT License: http://mbed.org/license/mit
00010  *
00011  * mbed library for 240*320 pixel display TFT based on ILI9341 LCD Controller
00012  * Copyright (c) 2013 Peter Drescher - DC2PD
00013  *
00014  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
00015  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
00016  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
00017  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
00018  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
00019  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
00020  * THE SOFTWARE.
00021  */
00022  
00023 
00024  
00025 #include "GraphicsDisplay.h"
00026 #define SWAP(a, b)  { a ^= b; b ^= a; a ^= b; }
00027 GraphicsDisplay::GraphicsDisplay(const char *name):TextDisplay(name) {
00028     set_font((unsigned char*)Terminal6x8,32,127,true);
00029  //   foreground(0xFFFF);
00030  //   background(0x0000);
00031     char_x = 0;
00032     char_y = 0;
00033     oriented_width=0;
00034     oriented_height=0;
00035     fontzoomver=1;
00036     fontzoomhor=1;
00037     auto_up = true;
00038 }
00039     
00040 void GraphicsDisplay::WindowMax (void)
00041 {
00042     window (0, 0, oriented_width,  oriented_height);
00043 }
00044 void GraphicsDisplay::set_width(int width)
00045 {
00046     oriented_width = width;
00047 }
00048 void GraphicsDisplay::set_height(int height)
00049 {
00050     oriented_height = height;
00051 }
00052 int GraphicsDisplay::width()
00053 {
00054     return oriented_width;
00055 }
00056 int GraphicsDisplay::height()
00057 {
00058     return oriented_height;
00059 }
00060 void GraphicsDisplay::circle(int x0, int y0, int r, unsigned short color)
00061 {
00062     int x = -r, y = 0, err = 2-2*r, e2;
00063     do {
00064         pixel(x0-x, y0+y,color);
00065         pixel(x0+x, y0+y,color);
00066         pixel(x0+x, y0-y,color);
00067         pixel(x0-x, y0-y,color);
00068         e2 = err;
00069         if (e2 <= y) {
00070             err += ++y*2+1;
00071             if (-x == y && e2 <= x) e2 = 0;
00072         }
00073         if (e2 > x) err += ++x*2+1;
00074     } while (x <= 0);
00075     if(auto_up) copy_to_lcd();
00076 }
00077 void GraphicsDisplay::fillcircle(int x0, int y0, int r, unsigned short color)
00078 {
00079     bool old_auto_up=auto_up;
00080     if(auto_up) auto_up=false;
00081     int x = -r, y = 0, err = 2-2*r, e2;
00082     do {
00083         vline(x0-x, y0-y, y0+y, color);
00084         vline(x0+x, y0-y, y0+y, color);
00085         e2 = err;
00086         if (e2 <= y) {
00087             err += ++y*2+1;
00088             if (-x == y && e2 <= x) e2 = 0;
00089         }
00090         if (e2 > x) err += ++x*2+1;
00091     } while (x <= 0);
00092     if(old_auto_up)
00093     {
00094         auto_up=true;
00095         copy_to_lcd();
00096     }
00097 }
00098 void GraphicsDisplay::hline(int x0, int x1, int y, unsigned short color)
00099 {
00100     int len = x1 - x0 + 1;
00101     window(x0,y,len,1);
00102  //   for (int j=0; j<len; j++) window_pushpixel(color);
00103     window_pushpixel(color, len);
00104     if(auto_up) copy_to_lcd();
00105     return;
00106 }
00107 void GraphicsDisplay::vline(int x, int y0, int y1, unsigned short color)
00108 {
00109     int len = y1 - y0 + 1;
00110     window(x,y0,1,len);
00111   //  for (int y=0; y<len; y++) window_pushpixel(color);
00112     window_pushpixel(color, len);
00113     if(auto_up) copy_to_lcd();
00114     return;
00115 }
00116 void GraphicsDisplay::line(int x0, int y0, int x1, int y1, unsigned short color)
00117 {
00118     //WindowMax();
00119     int   dx = 0, dy = 0;
00120     int   dx_sym = 0, dy_sym = 0;
00121     int   dx_x2 = 0, dy_x2 = 0;
00122     int   di = 0;
00123 
00124     dx = x1-x0;
00125     dy = y1-y0;
00126 
00127     if (dx == 0) {        /* vertical line */
00128         if (y1 < y0) SWAP(y0,y1);
00129         vline(x0,y0,y1,color);
00130         return;
00131     }
00132 
00133     if (dx > 0) {
00134         dx_sym = 1;
00135     } else {
00136         dx_sym = -1;
00137     }
00138     if (dy == 0) {        /* horizontal line */
00139         if (x1 < x0) SWAP(x1,x0);
00140         hline(x0,x1,y0,color);
00141         return;
00142     }
00143 
00144     if (dy > 0) {
00145         dy_sym = 1;
00146     } else {
00147         dy_sym = -1;
00148     }
00149 
00150     dx = dx_sym*dx;
00151     dy = dy_sym*dy;
00152 
00153     dx_x2 = dx*2;
00154     dy_x2 = dy*2;
00155 
00156     if (dx >= dy) {
00157         di = dy_x2 - dx;
00158         while (x0 != x1) {
00159 
00160             pixel(x0, y0, color);
00161             x0 += dx_sym;
00162             if (di<0) {
00163                 di += dy_x2;
00164             } else {
00165                 di += dy_x2 - dx_x2;
00166                 y0 += dy_sym;
00167             }
00168         }
00169         pixel(x0, y0, color);
00170     } else {
00171         di = dx_x2 - dy;
00172         while (y0 != y1) {
00173             pixel(x0, y0, color);
00174             y0 += dy_sym;
00175             if (di < 0) {
00176                 di += dx_x2;
00177             } else {
00178                 di += dx_x2 - dy_x2;
00179                 x0 += dx_sym;
00180             }
00181         }
00182         pixel(x0, y0, color);
00183     }
00184     if(auto_up) copy_to_lcd();
00185     return;
00186 }
00187 void GraphicsDisplay::rect(int x0, int y0, int x1, int y1, unsigned short color)
00188 {
00189     bool old_auto_up=auto_up;
00190     if(auto_up) auto_up=0;
00191     if (x1 > x0) hline(x0,x1,y0,color);
00192     else  hline(x1,x0,y0,color);
00193 
00194     if (y1 > y0) vline(x0,y0,y1,color);
00195     else vline(x0,y1,y0,color);
00196 
00197     if (x1 > x0) hline(x0,x1,y1,color);
00198     else  hline(x1,x0,y1,color);
00199 
00200     if (y1 > y0) vline(x1,y0,y1,color);
00201     else vline(x1,y1,y0,color);
00202     if(old_auto_up)
00203     {
00204         auto_up=true;
00205         copy_to_lcd();
00206     }
00207     return;
00208 }
00209 void GraphicsDisplay::fillrect(int x0, int y0, int x1, int y1, unsigned short color)
00210 {
00211     if(x0 > x1) SWAP(x0,x1);
00212     if(y0 > y1) SWAP(y0,y1);
00213      
00214     int h = y1 - y0 + 1;
00215     int w = x1 - x0 + 1;
00216     unsigned int pixels = h * w;
00217     window(x0,y0,w,h);
00218  //   for (unsigned int p=0; p<pixels; p++) window_pushpixel(color);
00219     window_pushpixel(color, pixels);
00220     if(auto_up) copy_to_lcd();
00221     return;
00222 }
00223 void GraphicsDisplay::locate(int x, int y)
00224 {
00225     char_x = x;
00226     char_y = y;
00227 }
00228 int GraphicsDisplay::columns()
00229 {
00230     return oriented_width / fonthor;
00231 }
00232 int GraphicsDisplay::rows()
00233 {
00234     return oriented_height / fontvert;
00235 }
00236 void GraphicsDisplay::set_font(unsigned char* f, unsigned char firstascii, unsigned char lastascii, bool proportional)
00237 {
00238     font = f;
00239     // read font parameter from start of array
00240     //fontoffset = font[0];                    // bytes / char
00241     fonthor = font[1];                       // get hor size of font
00242     fontvert = font[2];                      // get vert size of font
00243     //fontbpl = font[3];                       // bytes per line
00244     fontbpl = (fontvert+7)>>3; //bytes per line, rounded up to multiple of 8
00245     fontoffset = (fonthor*fontbpl)+1;
00246     firstch = firstascii;   // first ascii code present in font array (usually 32)
00247     lastch = lastascii;     // last ascii code present in font array (usually 127)
00248     fontprop=proportional;
00249     set_font_zoom(1,1);
00250 }
00251 void GraphicsDisplay::set_font_zoom(unsigned char x_mul, unsigned char y_mul)
00252 {
00253     fontzoomhor=((x_mul==0) ? 1:x_mul);
00254     fontzoomver=((y_mul==0) ? 1:y_mul);
00255 }
00256 int GraphicsDisplay::_putc(int value)
00257 {
00258     static int flagCyr;
00259     if (value>=208){flagCyr=value;} else
00260     if (value == '\n') {    // new line
00261         char_x = 0;
00262         char_y = char_y + fontvert*fontzoomver;
00263         if (char_y >= oriented_height - fontvert*fontzoomver) {
00264             char_y = 0;
00265         }
00266     } else {     
00267         character(char_x, char_y,flagCyr*256+value);
00268         flagCyr=0;
00269         if(auto_up) copy_to_lcd();
00270     }
00271     return value;
00272 }
00273 void GraphicsDisplay::character(int x, int y, int c)
00274 {   
00275   switch (c){
00276     case (208*256+129): c=168; break;
00277     case (208*256+132): c=170; break;
00278     case (208*256+134): c=178; break;
00279     case (208*256+135): c=175; break;    
00280     case (209*256+145): c=184; break;
00281     case (209*256+148): c=186; break;
00282     case (209*256+150): c=179; break;
00283     case (209*256+151): c=191; break;    
00284     case (210*256+144): c=165; break;
00285     case (210*256+145): c=180; break;    
00286     }
00287             
00288         int val   = 209; // Read D8..D15                
00289         val <<= 8;
00290         val  |= 128; //Read D0..D7  */  
00291     if (c>=val){c=c-val+240;}
00292     
00293         val   = 208; // Read D8..D15                
00294         val <<= 8;
00295         val  |= 144; //Read D0..D7  */  
00296     if (c>=val){c=c-val+192;}    
00297        
00298     char_x=x;
00299     char_y=y;
00300     int j,i,b;
00301     unsigned char* zeichen;
00302     unsigned char z,w,v;
00303 
00304  /*   // read font parameter from start of array
00305     offset = font[0];                    // bytes / char
00306     hor = font[1];                       // get hor size of font
00307     vert = font[2];                      // get vert size of font
00308     bpl = font[3];                       // bytes per line
00309 */
00310     if (char_x + fonthor*fontzoomhor > oriented_width) {
00311         char_x = 0;
00312         char_y = char_y + fontvert*fontzoomver;
00313         if (char_y > oriented_height - fontvert*fontzoomver) {
00314             char_y = 0;
00315         }
00316     }
00317     window(char_x, char_y,fonthor*fontzoomhor,fontvert*fontzoomver); // char box
00318     if ((c < firstch) || (c > lastch)) {   // test char range - if not exist fill with blank
00319          for (i = 0; i < fonthor*fontvert*fontzoomver;i++){
00320           window_pushpixel(_background, fontzoomhor); //(color, howmany) 
00321           }
00322     }
00323     else{
00324         zeichen = &font[((c-firstch) * fontoffset) + 4]; // start of char bitmap
00325         w = zeichen[0];                          // width of actual char
00326         // construct the char into the buffer
00327         for (j=0; j<fontvert; j++) {  //  vert line
00328             for (v=0; v<fontzoomver; v++) { // repeat horiz line for vertical zooming
00329               for (i=0; i<fonthor; i++) {   //  horz line
00330                 z =  zeichen[(fontbpl * i) + ((j & 0xF8) >> 3)+1];
00331                 b = 1 << (j & 0x07);
00332                 if (( z & b ) == 0x00) {
00333                 //   pixel(char_x+i,char_y+j,0);
00334                     window_pushpixel(_background, fontzoomhor); //(color, howmany)
00335                 } else {
00336                 //    pixel(char_x+i,char_y+j,1);
00337                     window_pushpixel(_foreground, fontzoomhor);
00338                 }
00339               }
00340             } //for each zoomed vert
00341          }
00342     }
00343     if(fontprop)
00344     {
00345         if((w+1)<fonthor) char_x += (w*fontzoomhor)+1; // put at least 1 blank after variable-width characters, except characters that occupy whole fonthor space like "_"
00346         else char_x += fonthor*fontzoomhor;
00347     }
00348     else char_x += fonthor*fontzoomhor; // fixed width
00349     
00350 }
00351 void GraphicsDisplay::Bitmap_BW(Bitmap_s bm, int x, int y)
00352 {
00353     int h,v,b;
00354  //   int cropX;
00355     char d;
00356     if(x<0) x=0;
00357     if(y<0) y=0;
00358     int cropX = (x+bm.xSize)-oriented_width;
00359     if(cropX<0) cropX=0; 
00360     window(x, y, bm.xSize-cropX, bm.ySize);
00361     for(v=0; v < bm.ySize; v++) {   // lines
00362         if((v + y) >= oriented_height) break; // no need to crop Y
00363         for(h=0; h < bm.xSize; h++) { // pixel
00364             if((h + x) >= oriented_width) break;
00365             d = bm.data[bm.Byte_in_Line * v + ((h & 0xF8) >> 3)];
00366             b = 0x80 >> (h & 0x07);
00367             if((d & b) == 0) {
00368                 window_pushpixel(_background);
00369             } else {
00370                 window_pushpixel(_foreground);
00371             }
00372         }
00373     }
00374     if(auto_up) copy_to_lcd();
00375 }
00376 void GraphicsDisplay::Bitmap(int x, int y, int w, int h,unsigned char *bitmap)
00377 {
00378     int  j;
00379     unsigned char  padd;
00380     unsigned short *bitmap_ptr = (unsigned short *)bitmap;    
00381 
00382     padd = w%2; // the lines are padded to multiple of 4 bytes in a bitmap
00383     if(x<0) x=0;
00384     else if(x>=oriented_width) return;
00385     if(y<0) y=0;
00386     else if(y>=oriented_height) return;
00387     int cropX = (x+w)-oriented_width;
00388     if(cropX<0) cropX=0;
00389     int cropY = (y+h)-oriented_height;
00390     if(cropY<0) cropY=0;
00391     window(x, y, w-cropX, h-cropY);
00392     bitmap_ptr += ((h - 1)* (w + padd)); // begin of last line in array (first line of image)(standard bmp scan direction is left->right bottom->top)
00393     for (j = 0; j < h-cropY; j++) {         //Lines
00394         window_pushpixelbuf(bitmap_ptr, w-cropX);
00395         bitmap_ptr -= w+padd;
00396     }
00397     if(auto_up) copy_to_lcd();
00398 }
00399 
00400 // local filesystem is not implemented in kinetis board , but you can add a SD card
00401 // fixme this whole functions needs testing and speedup
00402 int GraphicsDisplay::BMP_16(int x, int y, const char *Name_BMP)
00403 {
00404 
00405 #define OffsetPixelWidth    18
00406 #define OffsetPixelHeigh    22
00407 #define OffsetFileSize      34
00408 #define OffsetPixData       10
00409 #define OffsetBPP           28
00410 
00411     char filename[50];
00412     unsigned char BMP_Header[54];
00413     unsigned short BPP_t;
00414     unsigned int PixelWidth,PixelHeigh,start_data;
00415     unsigned int    i,off;
00416     int padd,j;
00417     unsigned short *line;
00418 
00419     // get the filename
00420     i=0;
00421     while (*Name_BMP!='\0') {
00422         filename[i++]=*Name_BMP++;
00423     }
00424     filename[i] = 0;  
00425     
00426     FILE *Image = fopen((const char *)&filename[0], "rb");  // open the bmp file
00427     if (!Image) {
00428         return(0);      // error file not found !
00429     }
00430 
00431     fread(&BMP_Header[0],1,54,Image);      // get the BMP Header
00432 
00433     if (BMP_Header[0] != 0x42 || BMP_Header[1] != 0x4D) {  // check magic byte
00434         fclose(Image);
00435         return(-1);     // error no BMP file
00436     }
00437 
00438     BPP_t = BMP_Header[OffsetBPP] + (BMP_Header[OffsetBPP + 1] << 8);
00439     if (BPP_t != 0x0010) {
00440         fclose(Image);
00441         return(-2);     // error no 16 bit BMP
00442     }
00443 
00444     PixelHeigh = BMP_Header[OffsetPixelHeigh] + (BMP_Header[OffsetPixelHeigh + 1] << 8) + (BMP_Header[OffsetPixelHeigh + 2] << 16) + (BMP_Header[OffsetPixelHeigh + 3] << 24);
00445     PixelWidth = BMP_Header[OffsetPixelWidth] + (BMP_Header[OffsetPixelWidth + 1] << 8) + (BMP_Header[OffsetPixelWidth + 2] << 16) + (BMP_Header[OffsetPixelWidth + 3] << 24);
00446     if (PixelHeigh > oriented_height + y || PixelWidth > oriented_width + x) {
00447         fclose(Image);
00448         return(-3);      // to big
00449     }
00450 
00451     start_data = BMP_Header[OffsetPixData] + (BMP_Header[OffsetPixData + 1] << 8) + (BMP_Header[OffsetPixData + 2] << 16) + (BMP_Header[OffsetPixData + 3] << 24);
00452 
00453     line = (unsigned short *) malloc (2 * PixelWidth); // we need a buffer for a line
00454     if (line == NULL) {
00455         return(-4);         // error no memory
00456     }
00457 
00458     // the bmp lines are padded to multiple of 4 bytes
00459     padd = -1;
00460     do {
00461         padd ++;
00462     } while ((PixelWidth * 2 + padd)%4 != 0);
00463 
00464     window(x, y,PixelWidth ,PixelHeigh);
00465 //    wr_cmd(0x2C);  // send pixel
00466     for (j = PixelHeigh - 1; j >= 0; j--) {               //Lines bottom up
00467         off = j * (PixelWidth  * 2 + padd) + start_data;   // start of line
00468         fseek(Image, off ,SEEK_SET);
00469         fread(line,1,PixelWidth * 2,Image);       // read a line - slow 
00470   /*      for (i = 0; i < PixelWidth; i++)
00471         {        // copy pixel data to TFT
00472      //       wr_16(line[i]);                  // one 16 bit pixel   
00473             window_pushpixel(line[i]);
00474             
00475         } */
00476         window_pushpixelbuf(line, PixelWidth);
00477      }
00478     free (line);
00479     fclose(Image);
00480     if(auto_up) copy_to_lcd();
00481     return(1);
00482 }
00483 
00484 void GraphicsDisplay::cls (void)
00485 {
00486     unsigned int pixels = ( oriented_width * oriented_height);
00487     WindowMax();
00488     for (unsigned int i = 0; i < pixels; i++)
00489     {
00490         window_pushpixel(_background);
00491     }
00492 }
00493 void GraphicsDisplay::set_auto_up(bool up)
00494 {
00495     if(up) auto_up = true;
00496     else auto_up = false;
00497 }
00498 bool GraphicsDisplay::get_auto_up(void)
00499 {
00500     return (auto_up);
00501 }
00502 
00503