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TFT_4DGL_Text.cpp@0:dea878cdd967, 2010-12-27 (annotated)

Committer:
JLS
Date:
Mon Dec 27 20:01:23 2010 +0000
Revision:
0:dea878cdd967

        

        
Who changed what in which revision?

        

            
                
UserRevisionLine numberNew contents of line

            
            


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//





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// TFT_4DGL is a class to drive 4D Systems TFT touch screens





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//





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// Copyright (C) <2010> Stephane ROCHON <stephane.rochon at free.fr>





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//





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// TFT_4DGL is free software: you can redistribute it and/or modify





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// it under the terms of the GNU General Public License as published by





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// the Free Software Foundation, either version 3 of the License, or





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// (at your option) any later version.





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//





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// TFT_4DGL is distributed in the hope that it will be useful,





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// but WITHOUT ANY WARRANTY; without even the implied warranty of





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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the





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// GNU General Public License for more details.





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//





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// You should have received a copy of the GNU General Public License





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// along with TFT_4DGL.  If not, see <http://www.gnu.org/licenses/>.





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#include "mbed.h"





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#include "TFT_4DGL.h"





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//****************************************************************************************************





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void TFT_4DGL :: set_font(char mode) {   // set font size





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    char command[2]= "";





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    int w, h, fx = 8, fy = 8;





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    command[0] = SETFONT;





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    command[1] = mode;





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    current_font = mode;





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    if (current_orientation == IS_PORTRAIT) {





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        w = SIZE_X;





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        h = SIZE_Y;





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    } else {





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        w = SIZE_Y;





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        h = SIZE_X;





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    }





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    switch (mode) {





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        case FONT_5X7 :





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            fx = 6;





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            fy = 8;





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            break;





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        case FONT_8X8 :





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            fx = 8;





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            fy = 8;





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            break;





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        case FONT_8X12 :





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            fx = 8;





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            fy = 12;





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            break;





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        case FONT_12X16 :





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            fx = 12;





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            fy = 16;





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            break;





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    }





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    max_col = w / fx;





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    max_row = h / fy;





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    writeCOMMAND(command, 2);





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}





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//****************************************************************************************************





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void TFT_4DGL :: text_mode(char mode) {   // set text mode





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    char command[2]= "";





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    command[0] = TEXTMODE;





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    command[1] = mode;





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    writeCOMMAND(command, 2);





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}





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//****************************************************************************************************





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void TFT_4DGL :: text_char(char c, char col, char row, int color) {   // draw a text char





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    char command[6]= "";





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    command[0] = TEXTCHAR;





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    command[1] = c;





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    command[2] = col;





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    command[3] = row;





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    int red5   = (color >> (16 + 3)) & 0x1F;              // get red on 5 bits





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    int green6 = (color >> (8 + 2))  & 0x3F;              // get green on 6 bits





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    int blue5  = (color >> (0 + 3))  & 0x1F;              // get blue on 5 bits





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    command[4] = ((red5 << 3)   + (green6 >> 3)) & 0xFF;  // first part of 16 bits color





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    command[5] = ((green6 << 5) + (blue5 >>  0)) & 0xFF;  // second part of 16 bits color





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    writeCOMMAND(command, 8);





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}





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//****************************************************************************************************





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void TFT_4DGL :: graphic_char(char c, int x, int y, int color, char width, char height) {   // draw a graphic char





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    char command[10]= "";





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    command[0] = GRAPHCHAR;





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    command[1] = c;





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    command[2] = (x >> 8) & 0xFF;





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    command[3] = x & 0xFF;





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    command[4] = (y >> 8) & 0xFF;





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    command[5] = y & 0xFF;





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    int red5   = (color >> (16 + 3)) & 0x1F;              // get red on 5 bits





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    int green6 = (color >> (8 + 2))  & 0x3F;              // get green on 6 bits





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    int blue5  = (color >> (0 + 3))  & 0x1F;              // get blue on 5 bits





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    command[6] = ((red5 << 3)   + (green6 >> 3)) & 0xFF;  // first part of 16 bits color





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    command[7] = ((green6 << 5) + (blue5 >>  0)) & 0xFF;  // second part of 16 bits color





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    command[8] = width;





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    command[9] = height;





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    writeCOMMAND(command, 10);





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}





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//****************************************************************************************************





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void TFT_4DGL :: text_string(char *s, char col, char row, char font, int color) {   // draw a text string





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    char command[1000]= "";





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    int size = strlen(s);





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    int i = 0;





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    command[0] = TEXTSTRING;





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    command[1] = col;





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    command[2] = row;





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    command[3] = font;





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    int red5   = (color >> (16 + 3)) & 0x1F;              // get red on 5 bits





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    int green6 = (color >> (8 + 2))  & 0x3F;              // get green on 6 bits





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    int blue5  = (color >> (0 + 3))  & 0x1F;              // get blue on 5 bits





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    command[4] = ((red5 << 3)   + (green6 >> 3)) & 0xFF;  // first part of 16 bits color





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    command[5] = ((green6 << 5) + (blue5 >>  0)) & 0xFF;  // second part of 16 bits color





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    for (i=0; i<size; i++) command[6+i] = s[i];





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    command[6+size] = 0;





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    writeCOMMAND(command, 7 + size);





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}





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//****************************************************************************************************





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void TFT_4DGL :: graphic_string(char *s, int x, int y, char font, int color, char width, char height) {   // draw a text string





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    char command[1000]= "";





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    int size = strlen(s);





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    int i = 0;





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    command[0] = GRAPHSTRING;





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    command[1] = (x >> 8) & 0xFF;





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    command[2] = x & 0xFF;





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    command[3] = (y >> 8) & 0xFF;





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    command[4] = y & 0xFF;





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    command[5] = font;





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    int red5   = (color >> (16 + 3)) & 0x1F;              // get red on 5 bits





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    int green6 = (color >> (8 + 2))  & 0x3F;              // get green on 6 bits





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    int blue5  = (color >> (0 + 3))  & 0x1F;              // get blue on 5 bits





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    command[6] = ((red5 << 3)   + (green6 >> 3)) & 0xFF;  // first part of 16 bits color





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    command[7] = ((green6 << 5) + (blue5 >>  0)) & 0xFF;  // second part of 16 bits color





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    command[8] = width;





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    command[9] = height;





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    for (i=0; i<size; i++) command[10+i] = s[i];





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    command[10+size] = 0;





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    writeCOMMAND(command, 11 + size);





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}





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//****************************************************************************************************





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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





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    char command[1000]= "";





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    int size = strlen(s);





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    int i = 0, red5, green6, blue5;





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    command[0] = TEXTBUTTON;





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    command[1] = mode;





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    command[2] = (x >> 8) & 0xFF;





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    command[3] = x & 0xFF;





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    command[4] = (y >> 8) & 0xFF;





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    command[5] = y & 0xFF;





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    red5   = (button_color >> (16 + 3)) & 0x1F;             // get red on 5 bits





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    green6 = (button_color >> (8 + 2))  & 0x3F;             // get green on 6 bits





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    blue5  = (button_color >> (0 + 3))  & 0x1F;             // get blue on 5 bits





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    command[6] = ((red5 << 3)   + (green6 >> 3)) & 0xFF;    // first part of 16 bits color





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    command[7] = ((green6 << 5) + (blue5 >>  0)) & 0xFF;    // second part of 16 bits color





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    command[8] = font;





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    red5   = (text_color >> (16 + 3)) & 0x1F;               // get red on 5 bits





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    green6 = (text_color >> (8 + 2))  & 0x3F;               // get green on 6 bits





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    blue5  = (text_color >> (0 + 3))  & 0x1F;               // get blue on 5 bits





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    command[9] = ((red5 << 3)   + (green6 >> 3)) & 0xFF;    // first part of 16 bits color





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    command[10] = ((green6 << 5) + (blue5 >>  0)) & 0xFF;   // second part of 16 bits color





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    command[11] = width;





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    command[12] = height;





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    for (i=0; i<size; i++) command[13+i] = s[i];





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    command[13+size] = 0;





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    writeCOMMAND(command, 14 + size);





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}





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//****************************************************************************************************





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void TFT_4DGL :: locate(char col, char row) {   // place text curssor at col, row





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    current_col = col;





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    current_row = row;





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}





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//****************************************************************************************************





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void TFT_4DGL :: color(int color) {   // set text color





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    current_color = color;





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}





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//****************************************************************************************************





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void TFT_4DGL :: putc(char c) {   // place char at current cursor position





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    text_char(c, current_col++, current_row, current_color);





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    if (current_col == max_col) {





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        current_col = 0;





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        current_row++;





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    }





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    if (current_row == max_row) {





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        current_row = 0;





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    }





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}





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//****************************************************************************************************





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void TFT_4DGL :: puts(char *s) {   // place string at current cursor position





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    text_string(s, current_col, current_row, current_font, current_color);





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    current_col += strlen(s);





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    if (current_col >= max_col) {





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        current_row += current_col / max_col;





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        current_col %= max_col;





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    }





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    if (current_row >= max_row) {





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        current_row %= max_row;





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    }





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}