text.c

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#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */

/*----- Header-Files -------------------------------------------------------*/
#include <stdlib.h>                 /* Common types and functions           */
#include <stdint.h>                 /* Standard integer formats             */
#include "lcd.h"                    /* Main functionality and lld           */

/*----- Macros -------------------------------------------------------------*/

/*----- Data types ---------------------------------------------------------*/

/*----- Function prototypes ------------------------------------------------*/

/*----- Data ---------------------------------------------------------------*/
static LCDCOLOR TextColor = 0xFFFF;

static LCDCOLOR BackColor = 0x0000;

static FONT_T *CurrentFont = &font_5x8;

/*----- Implementation -----------------------------------------------------*/
static void LCD_DrawChar(uint16_t Xpos, uint16_t Ypos, LCDCOLOR BackColor,
                         LCDCOLOR TextColor, FONT_T *Font, void *ptr) {

    uint32_t x = 0, y = 0;
    LCDCOLOR pixels[FONT_MAX_HEIGHT * FONT_MAX_WIDTH];
    uint32_t *PixelCount;
    uint8_t count = 0;

    for (y = Font->height; y > 0; y--) {

        for (x = 0; x < Font->width; x++) {

            PixelCount = ptr + x * Font->datasize;
            if ((*PixelCount & (1 << (y - 1))) == 0) {
                pixels[count] = BackColor;
            }
            else {
                pixels[count] = TextColor;
            }
            count++;
        }
    }

    LCD_WriteArea(Xpos, Ypos, Xpos + Font->width - 1, Ypos + Font->height - 1,
                  &pixels[0]);
}

void LCD_SetTextColor(LCDCOLOR Color) {
    TextColor = Color;
}

void LCD_SetBackColor(LCDCOLOR Color) {
    BackColor = Color;
}

void LCD_SetFont(FONT_T *Font) {
    CurrentFont = Font;
}

FONT_T* LCD_GetFont(void) {
    return CurrentFont;
}

uint8_t LCD_GetLineCount(void) {
    return LCD_VER_RESOLUTION / CurrentFont->height;
}

void LCD_ClearLine(uint8_t Line) {

    LCD_DrawRectF(0, Line * CurrentFont->height, LCD_HOR_RESOLUTION - 1,
                  CurrentFont->height - 1, BackColor);
}

void LCD_DisplayCharXY(uint16_t x, uint16_t y, char Ascii) {

    Ascii -= 32;

    LCD_DrawChar(
            x,
            y,
            BackColor,
            TextColor,
            CurrentFont,
            (void *) (CurrentFont->data
                    + Ascii * CurrentFont->width * CurrentFont->datasize));
}

void LCD_DisplayCharLine(uint8_t Line, uint8_t Column, char Ascii) {

    LCD_DisplayCharXY(Column * CurrentFont->width, Line * CurrentFont->height,
                      Ascii);
}

void LCD_DisplayStringXY(uint16_t x, uint16_t y, const char *ptr) {

    while (*ptr != 0) {
        LCD_DisplayCharXY(x, y, *ptr++);
        x += CurrentFont->width;
    }
}

void LCD_DisplayStringLine(uint8_t Line, const char *ptr) {

    uint8_t i = 0;

    while ((*ptr != 0) && (i < (LCD_HOR_RESOLUTION / CurrentFont->width))) {
        if (*ptr == '\n') {
            Line++;
        }
        else if (*ptr == '\r') {
            i = 0;
        }
        else if (*ptr == '\t') {
            LCD_DisplayCharLine(Line, i++, ' ');
            while (i % 4) {
                LCD_DisplayCharLine(Line, i++, ' ');
            }
        }
        else if (*ptr == '\b') {
            LCD_DisplayCharLine(Line, --i, ' ');
            i--;
        }
        else {
            LCD_DisplayCharLine(Line, i++, *ptr);
        }
        ptr++;
    }

    while (i < (LCD_HOR_RESOLUTION / CurrentFont->width)) {
        LCD_DisplayCharLine(Line, i++, ' ');
    }
}

void LCD_DisplayStringCenterLine(uint8_t Line, const char *ptr) {

    uint8_t i;
    uint16_t length = 0;

    for (i = 0;
            (i < LCD_HOR_RESOLUTION / CurrentFont->width) && (ptr[i] != 0);
            i++) {

        length += CurrentFont->width;
    }

    LCD_DisplayStringXY((LCD_HOR_RESOLUTION - length) / 2,
                        Line * CurrentFont->height, ptr);
}

/*----- EOF ----------------------------------------------------------------*/

#ifdef __cplusplus
}
#endif /* __cplusplus */