TFT_4DGL_Text.cpp

00001 //
00002 // TFT_4DGL is a class to drive 4D Systems TFT touch screens
00003 //
00004 // Copyright (C) <2010> Stephane ROCHON <stephane.rochon at free.fr>
00005 //
00006 // TFT_4DGL is free software: you can redistribute it and/or modify
00007 // it under the terms of the GNU General Public License as published by
00008 // the Free Software Foundation, either version 3 of the License, or
00009 // (at your option) any later version.
00010 //
00011 // TFT_4DGL is distributed in the hope that it will be useful,
00012 // but WITHOUT ANY WARRANTY; without even the implied warranty of
00013 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00014 // GNU General Public License for more details.
00015 //
00016 // You should have received a copy of the GNU General Public License
00017 // along with TFT_4DGL.  If not, see <http://www.gnu.org/licenses/>.
00018 
00019 #include "mbed.h"
00020 #include "TFT_4DGL.h"
00021 #include <stdarg.h>
00022 #include <stdio.h>
00023 
00024 
00025 //****************************************************************************************************
00026 void TFT_4DGL :: set_font(char mode) {   // set font size
00027     char command[2]= "";
00028 
00029     int w, h, fx = 8, fy = 8;
00030 
00031     command[0] = SETFONT;
00032     command[1] = mode;
00033 
00034     current_font = mode;
00035 
00036     if (current_orientation == IS_PORTRAIT) {
00037         w = SIZE_X;
00038         h = SIZE_Y;
00039     } else {
00040         w = SIZE_Y;
00041         h = SIZE_X;
00042     }
00043 
00044     switch (mode) {
00045         case FONT_5X7 :
00046             fx = 6;
00047             fy = 8;
00048             break;
00049         case FONT_8X8 :
00050             fx = 8;
00051             fy = 8;
00052             break;
00053         case FONT_8X12 :
00054             fx = 8;
00055             fy = 12;
00056             break;
00057         case FONT_12X16 :
00058             fx = 12;
00059             fy = 16;
00060             break;
00061     }
00062 
00063     max_col = w / fx;
00064     max_row = h / fy;
00065 
00066     writeCOMMAND(command, 2);
00067 }
00068 
00069 //****************************************************************************************************
00070 void TFT_4DGL :: text_mode(char mode) {   // set text mode
00071     char command[2]= "";
00072 
00073     command[0] = TEXTMODE;
00074     command[1] = mode;
00075 
00076     writeCOMMAND(command, 2);
00077 }
00078 
00079 //****************************************************************************************************
00080 void TFT_4DGL :: text_char(char c, char col, char row, int color) {   // draw a text char
00081     char command[6]= "";
00082 
00083     command[0] = TEXTCHAR;
00084 
00085     command[1] = c;
00086     command[2] = col;
00087     command[3] = row;
00088 
00089     int red5   = (color >> (16 + 3)) & 0x1F;              // get red on 5 bits
00090     int green6 = (color >> (8 + 2))  & 0x3F;              // get green on 6 bits
00091     int blue5  = (color >> (0 + 3))  & 0x1F;              // get blue on 5 bits
00092 
00093     command[4] = ((red5 << 3)   + (green6 >> 3)) & 0xFF;  // first part of 16 bits color
00094     command[5] = ((green6 << 5) + (blue5 >>  0)) & 0xFF;  // second part of 16 bits color
00095 
00096     writeCOMMAND(command, 8);
00097 }
00098 
00099 //****************************************************************************************************
00100 void TFT_4DGL :: graphic_char(char c, int x, int y, int color, char width, char height) {   // draw a graphic char
00101     char command[10]= "";
00102 
00103     command[0] = GRAPHCHAR;
00104 
00105     command[1] = c;
00106 
00107     command[2] = (x >> 8) & 0xFF;
00108     command[3] = x & 0xFF;
00109 
00110     command[4] = (y >> 8) & 0xFF;
00111     command[5] = y & 0xFF;
00112 
00113     int red5   = (color >> (16 + 3)) & 0x1F;              // get red on 5 bits
00114     int green6 = (color >> (8 + 2))  & 0x3F;              // get green on 6 bits
00115     int blue5  = (color >> (0 + 3))  & 0x1F;              // get blue on 5 bits
00116 
00117     command[6] = ((red5 << 3)   + (green6 >> 3)) & 0xFF;  // first part of 16 bits color
00118     command[7] = ((green6 << 5) + (blue5 >>  0)) & 0xFF;  // second part of 16 bits color
00119 
00120     command[8] = width;
00121 
00122     command[9] = height;
00123 
00124     writeCOMMAND(command, 10);
00125 }
00126 
00127 //****************************************************************************************************
00128 void TFT_4DGL :: text_string(char *s, char col, char row, char font, int color) {   // draw a text string
00129 
00130     char command[1000]= "";
00131     int size = strlen(s);
00132     int i = 0;
00133 
00134     command[0] = TEXTSTRING;
00135 
00136     command[1] = col;
00137     command[2] = row;
00138 
00139     command[3] = font;
00140 
00141     int red5   = (color >> (16 + 3)) & 0x1F;              // get red on 5 bits
00142     int green6 = (color >> (8 + 2))  & 0x3F;              // get green on 6 bits
00143     int blue5  = (color >> (0 + 3))  & 0x1F;              // get blue on 5 bits
00144 
00145     command[4] = ((red5 << 3)   + (green6 >> 3)) & 0xFF;  // first part of 16 bits color
00146     command[5] = ((green6 << 5) + (blue5 >>  0)) & 0xFF;  // second part of 16 bits color
00147 
00148     for (i=0; i<size; i++) command[6+i] = s[i];
00149 
00150     command[6+size] = 0;
00151 
00152     writeCOMMAND(command, 7 + size);
00153 }
00154 
00155 //****************************************************************************************************
00156 void TFT_4DGL :: graphic_string(char *s, int x, int y, char font, int color, char width, char height) {   // draw a text string
00157 
00158     char command[1000]= "";
00159     int size = strlen(s);
00160     int i = 0;
00161 
00162     command[0] = GRAPHSTRING;
00163 
00164     command[1] = (x >> 8) & 0xFF;
00165     command[2] = x & 0xFF;
00166 
00167     command[3] = (y >> 8) & 0xFF;
00168     command[4] = y & 0xFF;
00169 
00170     command[5] = font;
00171 
00172     int red5   = (color >> (16 + 3)) & 0x1F;              // get red on 5 bits
00173     int green6 = (color >> (8 + 2))  & 0x3F;              // get green on 6 bits
00174     int blue5  = (color >> (0 + 3))  & 0x1F;              // get blue on 5 bits
00175 
00176     command[6] = ((red5 << 3)   + (green6 >> 3)) & 0xFF;  // first part of 16 bits color
00177     command[7] = ((green6 << 5) + (blue5 >>  0)) & 0xFF;  // second part of 16 bits color
00178 
00179     command[8] = width;
00180 
00181     command[9] = height;
00182 
00183     for (i=0; i<size; i++) command[10+i] = s[i];
00184 
00185     command[10+size] = 0;
00186 
00187     writeCOMMAND(command, 11 + size);
00188 }
00189 
00190 //****************************************************************************************************
00191 void TFT_4DGL :: text_button(char *s, char mode, int x, int y, int button_color, char font, int text_color, char width, char height) {   // draw a text string
00192 
00193     char command[1000]= "";
00194     int size = strlen(s);
00195     int i = 0, red5, green6, blue5;
00196 
00197     command[0] = TEXTBUTTON;
00198 
00199     command[1] = mode;
00200 
00201     command[2] = (x >> 8) & 0xFF;
00202     command[3] = x & 0xFF;
00203 
00204     command[4] = (y >> 8) & 0xFF;
00205     command[5] = y & 0xFF;
00206 
00207     red5   = (button_color >> (16 + 3)) & 0x1F;              // get red on 5 bits
00208     green6 = (button_color >> (8 + 2))  & 0x3F;              // get green on 6 bits
00209     blue5  = (button_color >> (0 + 3))  & 0x1F;              // get blue on 5 bits
00210 
00211     command[6] = ((red5 << 3)   + (green6 >> 3)) & 0xFF;  // first part of 16 bits color
00212     command[7] = ((green6 << 5) + (blue5 >>  0)) & 0xFF;  // second part of 16 bits color
00213 
00214     command[8] = font;
00215 
00216     red5   = (text_color >> (16 + 3)) & 0x1F;              // get red on 5 bits
00217     green6 = (text_color >> (8 + 2))  & 0x3F;              // get green on 6 bits
00218     blue5  = (text_color >> (0 + 3))  & 0x1F;              // get blue on 5 bits
00219 
00220     command[9] = ((red5 << 3)   + (green6 >> 3)) & 0xFF;  // first part of 16 bits color
00221     command[10] = ((green6 << 5) + (blue5 >>  0)) & 0xFF;  // second part of 16 bits color
00222 
00223     command[11] = width;
00224 
00225     command[12] = height;
00226 
00227     for (i=0; i<size; i++) command[13+i] = s[i];
00228 
00229     command[13+size] = 0;
00230 
00231     writeCOMMAND(command, 14 + size);
00232 }
00233 
00234 //****************************************************************************************************
00235 void TFT_4DGL :: locate(char col, char row) {   // place text curssor at col, row
00236     current_col = col;
00237     current_row = row;
00238 }
00239 
00240 //****************************************************************************************************
00241 void TFT_4DGL :: color(int color) {   // set text color
00242     current_color = color;
00243 }
00244 
00245 //****************************************************************************************************
00246 void TFT_4DGL :: putc(char c) {   // place char at current cursor position
00247 
00248     text_char(c, current_col++, current_row, current_color);
00249 
00250     if (current_col == max_col) {
00251         current_col = 0;
00252         current_row++;
00253     }
00254     if (current_row == max_row) {
00255         current_row = 0;
00256     }
00257 }
00258 
00259 //****************************************************************************************************
00260 void TFT_4DGL :: puts(char *s) {   // place string at current cursor position
00261 
00262     text_string(s, current_col, current_row, current_font, current_color);
00263 
00264     current_col += strlen(s);
00265 
00266     if (current_col >= max_col) {
00267         current_row += current_col / max_col;
00268         current_col %= max_col;
00269     }
00270     if (current_row >= max_row) {
00271         current_row %= max_row;
00272     }
00273 }