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TFT_CHAR.cpp
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TFT_CHAR.cpp
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/*
Character drawing level
Copyright (c) 2024, rspber (https://github.com/rspber)
Based on: TFT_eSPI
Originally notes below:
*/
/***************************************************
Arduino TFT graphics library targeted at 32-bit
processors such as ESP32, ESP8266 and STM32.
This is a stand-alone library that contains the
hardware driver, the graphics functions and the
proportional fonts.
The larger fonts are Run Length Encoded to reduce their
size.
Created by Bodmer 2/12/16
Last update by Bodmer 20/03/20
****************************************************/
#include "TFT_CHAR.h"
/***************************************************************************************
** Function name: TFT_eSPI
** Description: Constructor , we must use hardware SPI pins
***************************************************************************************/
TFT_CHAR::TFT_CHAR() : TFT_GFX()
{
_fillbg = false; // Smooth font only at the moment, force text background fill
_isDigits = false; // No bounding box adjustment
_textwrapX = true; // Wrap text at end of line when using print stream
_textwrapY = false; // Wrap text at bottom of screen when using print stream
_fontsloaded = 0;
_cp437 = false; // Legacy GLCD font bug fix disabled by default
_utf8 = true; // UTF8 decoding enabled
#if defined (FONT_FS_AVAILABLE) && defined (SMOOTH_FONT)
fs_font = true; // Smooth font filing system or array (fs_font = false) flag
#endif
// Flags for which fonts are loaded
#ifdef LOAD_GLCD
_fontsloaded = 0x0002; // Bit 1 set
#endif
#ifdef LOAD_FONT2
_fontsloaded |= 0x0004; // Bit 2 set
#endif
#ifdef LOAD_FONT4
_fontsloaded |= 0x0010; // Bit 4 set
#endif
#ifdef LOAD_FONT6
_fontsloaded |= 0x0040; // Bit 6 set
#endif
#ifdef LOAD_FONT7
_fontsloaded |= 0x0080; // Bit 7 set
#endif
#ifdef LOAD_FONT8
_fontsloaded |= 0x0100; // Bit 8 set
#endif
#ifdef LOAD_FONT8N
_fontsloaded |= 0x0200; // Bit 9 set
#endif
#ifdef SMOOTH_FONT
_fontsloaded |= 0x8000; // Bit 15 set
#endif
}
void TFT_CHAR::setCallback(getColorCallback getCol)
{
getColor = getCol;
}
/***************************************************************************************
** Function name: textWidth
** Description: Return the width in pixels of a string in a given font
***************************************************************************************/
int16_t TFT_CHAR::textWidth(font_t& font, const char *string)
{
int32_t str_width = 0;
uint16_t uniCode = 0;
#ifdef SMOOTH_FONT
if(fontLoaded) {
while (*string) {
uniCode = decodeUTF8(*string++);
if (uniCode) {
if (uniCode == 0x20) str_width += gFont.spaceWidth;
else {
uint16_t gNum = 0;
bool found = getUnicodeIndex(uniCode, &gNum);
if (found) {
if(str_width == 0 && gdX[gNum] < 0) str_width -= gdX[gNum];
if (*string || _isDigits) str_width += gxAdvance[gNum];
else str_width += (gdX[gNum] + gWidth[gNum]);
}
else str_width += gFont.spaceWidth + 1;
}
}
}
_isDigits = false;
return str_width;
}
#endif
if (font.font > 1 && font.font < 9) {
char *widthtable = (char *)pgm_read_dword( &(fontdata[font.font].widthtbl ) ) - 32; //subtract the 32 outside the loop
while (*string) {
uniCode = *(string++);
if (uniCode > 31 && uniCode < 128)
str_width += pgm_read_byte( widthtable + uniCode); // Normally we need to subtract 32 from uniCode
else str_width += pgm_read_byte( widthtable + 32); // Set illegal character = space width
}
}
else {
#ifdef LOAD_GFXFF
if(font.gfxFont) { // New font
while (*string) {
uniCode = decodeUTF8(*string++);
if ((uniCode >= pgm_read_word(&font.gfxFont->first)) && (uniCode <= pgm_read_word(&font.gfxFont->last ))) {
uniCode -= pgm_read_word(&font.gfxFont->first);
GFXglyph *glyph = &(((GFXglyph *)pgm_read_dword(&font.gfxFont->glyph))[uniCode]);
// If this is not the last character or is a digit then use xAdvance
if (*string || _isDigits) str_width += pgm_read_byte(&glyph->xAdvance);
// Else use the offset plus width since this can be bigger than xAdvance
else str_width += ((int8_t)pgm_read_byte(&glyph->xOffset) + pgm_read_byte(&glyph->width));
}
}
}
else
#endif
{
#ifdef LOAD_GLCD
while (*string++) str_width += 6;
#endif
}
}
_isDigits = false;
return str_width * font.size;
}
/***************************************************************************************
** Function name: fontsLoaded
** Description: return an encoded 16-bit value showing the fonts loaded
***************************************************************************************/
// Returns a value showing which fonts are loaded (bit N set = Font N loaded)
uint16_t TFT_CHAR::fontsLoaded(void)
{
return _fontsloaded;
}
/***************************************************************************************
** Function name: fontHeight
** Description: return the height of a font (yAdvance for free fonts)
***************************************************************************************/
int16_t TFT_CHAR::fontHeight(font_t& font)
{
if (font.font > 8) return 0;
#ifdef SMOOTH_FONT
if(fontLoaded) return gFont.yAdvance;
#endif
#ifdef LOAD_GFXFF
if (font.font == 1) {
if(font.gfxFont) { // New font
return pgm_read_byte(&font.gfxFont->yAdvance) * font.size;
}
}
#endif
return pgm_read_byte( &fontdata[font.font].height ) * font.size;
}
/***************************************************************************************
** Function name: drawChar
** Description: draw a single character in the GLCD or GFXFF font
***************************************************************************************/
void TFT_CHAR::drawChar_GLCD_GFXFF(clip_t& clip, cursor_t& cursor, font_t& font, uint16_t c, uint32_t color, uint32_t bg)
{
#ifdef LOAD_GLCD
//>>>>>>>>>>>>>>>>>>
#ifdef LOAD_GFXFF
if (!font.gfxFont) { // 'Classic' built-in GLCD font
#endif
//>>>>>>>>>>>>>>>>>>
int32_t xd = cursor.x + clip.xDatum;
int32_t yd = cursor.y + clip.yDatum;
if ((xd >= clip.x2) || // Clip right
(yd >= clip.y2)) // Clip bottom
return;
if ((xd + 6 * font.size - 1 < clip.x1) || // Clip left
(yd + 8 * font.size - 1 < clip.y1)) // Clip top
return;
if (c > 255) return;
if (!_cp437 && c > 175) c++;
bool fillbg = (bg != color);
bool offclip = xd < clip.x1 || xd + 6 * font.size >= clip.x2 || yd < clip.y1 || yd + 8 * font.size >= clip.y2;
if (font.size == 1 && fillbg && !offclip) {
uint8_t column[6];
uint8_t mask = 0x1;
begin_tft_write();
setWindow(xd, yd, 6, 8);
drawCharDefault(&glcdfont[0] + (c * 5), color, bg);
end_tft_write();
}
else {
//begin_tft_write(); // Sprite class can use this function, avoiding begin_tft_write()
inTransaction = true;
for (int8_t i = 0; i < 6; i++ ) {
uint8_t line;
if (i == 5)
line = 0x0;
else
line = pgm_read_byte(&glcdfont[0] + (c * 5) + i);
if (font.size == 1 && !fillbg) { // default size
for (int8_t j = 0; j < 8; j++) {
if (line & 0x1) drawPixel(clip, cursor.x + i, cursor.y + j, color);
line >>= 1;
}
}
else { // big size or clipped
for (int8_t j = 0; j < 8; j++) {
if (line & 0x1) fillRect(clip, cursor.x + (i * font.size), cursor.y + (j * font.size), font.size, font.size, color);
else if (fillbg) fillRect(clip, cursor.x + i * font.size, cursor.y + j * font.size, font.size, font.size, bg);
line >>= 1;
}
}
}
inTransaction = lockTransaction;
end_tft_write(); // Does nothing if Sprite class uses this function
}
//>>>>>>>>>>>>>>>>>>>>>>>>>>>
#ifdef LOAD_GFXFF
} else { // Custom font
#endif
//>>>>>>>>>>>>>>>>>>>>>>>>>>>
#endif // LOAD_GLCD
#ifdef LOAD_GFXFF
// Filter out bad characters not present in font
if ((c >= pgm_read_word(&font.gfxFont->first)) && (c <= pgm_read_word(&font.gfxFont->last ))) {
//begin_tft_write(); // Sprite class can use this function, avoiding begin_tft_write()
inTransaction = true;
//>>>>>>>>>>>>>>>>>>>>>>>>>>>
c -= pgm_read_word(&font.gfxFont->first);
GFXglyph *glyph = &(((GFXglyph *)pgm_read_dword(&font.gfxFont->glyph))[c]);
uint8_t *bitmap = (uint8_t *)pgm_read_dword(&font.gfxFont->bitmap);
uint32_t bo = pgm_read_word(&glyph->bitmapOffset);
uint8_t w = pgm_read_byte(&glyph->width),
h = pgm_read_byte(&glyph->height);
//xa = pgm_read_byte(&glyph->xAdvance);
int8_t xo = pgm_read_byte(&glyph->xOffset),
yo = pgm_read_byte(&glyph->yOffset);
uint8_t xx, yy, bits=0, bit=0;
int16_t xo16 = 0, yo16 = 0;
if (font.size > 1) {
xo16 = xo;
yo16 = yo;
}
// GFXFF rendering speed up
uint16_t hpc = 0; // Horizontal foreground pixel count
for(yy=0; yy<h; yy++) {
for(xx=0; xx<w; xx++) {
if(bit == 0) {
bits = pgm_read_byte(&bitmap[bo++]);
bit = 0x80;
}
if(bits & bit) hpc++;
else {
if (hpc) {
if(font.size == 1) drawFastHLine(clip, cursor.x+xo+xx-hpc, cursor.y+yo+yy, hpc, color);
else fillRect(clip, cursor.x+(xo16+xx-hpc)*font.size, cursor.y+(yo16+yy)*font.size, font.size*hpc, font.size, color);
hpc=0;
}
}
bit >>= 1;
}
// Draw pixels for this line as we are about to increment yy
if (hpc) {
if(font.size == 1) drawFastHLine(clip, cursor.x+xo+xx-hpc, cursor.y+yo+yy, hpc, color);
else fillRect(clip, cursor.x+(xo16+xx-hpc)*font.size, cursor.y+(yo16+yy)*font.size, font.size*hpc, font.size, color);
hpc=0;
}
}
inTransaction = lockTransaction;
end_tft_write(); // Does nothing if Sprite class uses this function
}
#endif
}
}
/***************************************************************************************
** Function name: decodeUTF8
** Description: Serial UTF-8 decoder with fall-back to extended ASCII
*************************************************************************************x*/
uint16_t TFT_CHAR::decodeUTF8(uint8_t c)
{
if (!_utf8) return c;
// 7-bit Unicode Code Point
if ((c & 0x80) == 0x00) {
decoderState = 0;
return c;
}
if (decoderState == 0) {
// 11-bit Unicode Code Point
if ((c & 0xE0) == 0xC0) {
decoderBuffer = ((c & 0x1F)<<6);
decoderState = 1;
return 0;
}
// 16-bit Unicode Code Point
if ((c & 0xF0) == 0xE0) {
decoderBuffer = ((c & 0x0F)<<12);
decoderState = 2;
return 0;
}
// 21-bit Unicode Code Point not supported so fall-back to extended ASCII
// if ((c & 0xF8) == 0xF0) return c;
}
else {
if (decoderState == 2) {
decoderBuffer |= ((c & 0x3F)<<6);
decoderState--;
return 0;
}
else {
decoderBuffer |= (c & 0x3F);
decoderState = 0;
return decoderBuffer;
}
}
decoderState = 0;
return c; // fall-back to extended ASCII
}
/***************************************************************************************
** Function name: decodeUTF8
** Description: Line buffer UTF-8 decoder with fall-back to extended ASCII
*************************************************************************************x*/
uint16_t TFT_CHAR::decodeUTF8(uint8_t *buf, uint16_t *index, uint16_t remaining)
{
uint16_t c = buf[(*index)++];
//Serial.print("Byte from string = 0x"); Serial.println(c, HEX);
if (!_utf8) return c;
// 7-bit Unicode
if ((c & 0x80) == 0x00) return c;
// 11-bit Unicode
if (((c & 0xE0) == 0xC0) && (remaining > 1))
return ((c & 0x1F)<<6) | (buf[(*index)++]&0x3F);
// 16-bit Unicode
if (((c & 0xF0) == 0xE0) && (remaining > 2)) {
c = ((c & 0x0F)<<12) | ((buf[(*index)++]&0x3F)<<6);
return c | ((buf[(*index)++]&0x3F));
}
// 21-bit Unicode not supported so fall-back to extended ASCII
// if (((c & 0xF8) == 0xF0) && (remaining > 3)) {
// c = ((c & 0x07) << 18) | ((buf[(*index)++] & 0x03F) << 12);
// c |= ((buf[(*index)++] & 0x3F) << 6);
// return c | ((buf[(*index)++] & 0x3F));
return c; // fall-back to extended ASCII
}
/***************************************************************************************
** Function name: write
** Description: draw characters piped through serial stream
***************************************************************************************/
size_t TFT_CHAR::write(wh_clip_t& clip, cursor_t& cursor, font_t& font, uint8_t utf8, uint32_t textcolor, uint32_t textbgcolor)
{
uint16_t uniCode = decodeUTF8(utf8);
if (!uniCode) return 1;
if (utf8 == '\r') return 1;
#ifdef SMOOTH_FONT
if(fontLoaded) {
if (uniCode < 32 && utf8 != '\n') return 1;
drawGlyph(clip, cursor, uniCode, textcolor, textbgcolor);
return 1;
}
#endif
if (uniCode == '\n') uniCode+=22; // Make it a valid space character to stop errors
uint16_t cwidth = 0;
uint16_t cheight = 0;
//vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv DEBUG vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
//Serial.print((uint8_t) uniCode); // Debug line sends all printed TFT text to serial port
//Serial.println(uniCode, HEX); // Debug line sends all printed TFT text to serial port
//delay(5); // Debug optional wait for serial port to flush through
//^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ DEBUG ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
//<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
#ifdef LOAD_GFXFF
if (!font.gfxFont) {
#endif
//<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
#ifdef LOAD_FONT2
if (font.font == 2) {
if (uniCode < 32 || uniCode > 127) return 1;
cwidth = pgm_read_byte(widtbl_f16 + uniCode-32);
cheight = chr_hgt_f16;
// Font 2 is rendered in whole byte widths so we must allow for this
cwidth = (cwidth + 6) / 8; // Width in whole bytes for font 2, should be + 7 but must allow for font width change
cwidth = cwidth * 8; // Width converted back to pixels
}
#ifdef LOAD_RLE
else
#endif
#endif
#ifdef LOAD_RLE
{
if ((font.font > 2) && (font.font < 9)) {
if (uniCode < 32 || uniCode > 127) return 1;
// Uses the fontinfo struct array to avoid lots of 'if' or 'switch' statements
cwidth = pgm_read_byte( (uint8_t *)pgm_read_dword( &(fontdata[font.font].widthtbl ) ) + uniCode-32 );
cheight= pgm_read_byte( &fontdata[font.font].height );
}
}
#endif
#ifdef LOAD_GLCD
if (font.font == 1) {
cwidth = 6;
cheight = 8;
}
#else
if (font.font == 1) return 1;
#endif
cheight = cheight * font.size;
if (utf8 == '\n') {
cursor.y += cheight;
cursor.x = 0;
}
else {
if (_textwrapX && (cursor.x + cwidth * font.size > clip.width)) {
cursor.y += cheight;
cursor.x = 0;
}
if (_textwrapY && (cursor.y >= (int32_t) clip.height)) cursor.y = 0;
cursor.x += drawChar(clip, cursor, font, uniCode, textcolor, textbgcolor);
}
//<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
#ifdef LOAD_GFXFF
} // Custom GFX font
else {
if(utf8 == '\n') {
cursor.x = 0;
cursor.y += (int16_t)font.size * (uint8_t)pgm_read_byte(&font.gfxFont->yAdvance);
} else {
if (uniCode > pgm_read_word(&font.gfxFont->last )) return 1;
if (uniCode < pgm_read_word(&font.gfxFont->first)) return 1;
uint16_t c2 = uniCode - pgm_read_word(&font.gfxFont->first);
GFXglyph *glyph = &(((GFXglyph *)pgm_read_dword(&font.gfxFont->glyph))[c2]);
uint8_t w = pgm_read_byte(&glyph->width),
h = pgm_read_byte(&glyph->height);
if((w > 0) && (h > 0)) { // Is there an associated bitmap?
int16_t xo = (int8_t)pgm_read_byte(&glyph->xOffset);
if(_textwrapX && ((cursor.x + font.size * (xo + w)) > clip.width)) {
// Drawing character would go off right edge; wrap to new line
cursor.x = 0;
cursor.y += (int16_t)font.size * (uint8_t)pgm_read_byte(&font.gfxFont->yAdvance);
}
if (_textwrapY && (cursor.y >= (int32_t) clip.height)) cursor.y = 0;
drawChar(clip, cursor, font, uniCode, textcolor, textbgcolor);
}
cursor.x += pgm_read_byte(&glyph->xAdvance) * (int16_t)font.size;
}
}
#endif // LOAD_GFXFF
//<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
return 1;
}
void TFT_CHAR::drawCharFont2(clip_t& clip, cursor_t& cursor, int32_t width, int32_t height, uint8_t textsize, uint32_t textcolor, uint32_t textbgcolor, uint32_t flash_address)
{
int32_t pY = cursor.y;
int32_t w = width;
w = w + 6; // Should be + 7 but we need to compensate for width increment
w = w / 8;
for (int32_t i = 0; i < height; i++)
{
if (textcolor != textbgcolor) fillRect(clip, cursor.x, pY, width * textsize, textsize, textbgcolor);
for (int32_t k = 0; k < w; k++)
{
uint8_t line = pgm_read_byte((uint8_t *)flash_address + w * i + k);
if (line) {
if (textsize == 1) {
int32_t pX = cursor.x + k * 8;
if (line & 0x80) drawPixel(clip, pX, pY, textcolor);
if (line & 0x40) drawPixel(clip, pX + 1, pY, textcolor);
if (line & 0x20) drawPixel(clip, pX + 2, pY, textcolor);
if (line & 0x10) drawPixel(clip, pX + 3, pY, textcolor);
if (line & 0x08) drawPixel(clip, pX + 4, pY, textcolor);
if (line & 0x04) drawPixel(clip, pX + 5, pY, textcolor);
if (line & 0x02) drawPixel(clip, pX + 6, pY, textcolor);
if (line & 0x01) drawPixel(clip, pX + 7, pY, textcolor);
}
else {
int32_t pX = cursor.x + k * 8 * textsize;
if (line & 0x80) fillRect(clip, pX, pY, textsize, textsize, textcolor);
if (line & 0x40) fillRect(clip, pX + textsize, pY, textsize, textsize, textcolor);
if (line & 0x20) fillRect(clip, pX + 2 * textsize, pY, textsize, textsize, textcolor);
if (line & 0x10) fillRect(clip, pX + 3 * textsize, pY, textsize, textsize, textcolor);
if (line & 0x08) fillRect(clip, pX + 4 * textsize, pY, textsize, textsize, textcolor);
if (line & 0x04) fillRect(clip, pX + 5 * textsize, pY, textsize, textsize, textcolor);
if (line & 0x02) fillRect(clip, pX + 6 * textsize, pY, textsize, textsize, textcolor);
if (line & 0x01) fillRect(clip, pX + 7 * textsize, pY, textsize, textsize, textcolor);
}
}
}
pY += textsize;
}
}
void TFT_CHAR::drawCharRLE_1(int32_t width, int32_t height, uint32_t textcolor, uint32_t textbgcolor, uint32_t flash_address)
{
int32_t w = width;
w *= height; // Now w is total number of pixels in the character
// Maximum font size is equivalent to 180x180 pixels in area
while (w > 0) {
uint8_t line = pgm_read_byte((uint8_t *)flash_address++); // 8 bytes smaller when incrementing here
if (line & 0x80) {
line &= 0x7F;
line++; w -= line;
pushBlock(textcolor, line);
}
else {
line++; w -= line;
pushBlock(textbgcolor, line);
}
}
}
void TFT_CHAR::drawCharRLE_3(clip_t& clip, cursor_t& cursor, int32_t width, int32_t height, uint8_t textsize, uint32_t textcolor, uint32_t textbgcolor, uint32_t flash_address)
{
int32_t w = width;
w *= height; // Now w is total number of pixels in the character
int32_t px = 0, py = 0; // To hold character pixel coords
int32_t tx = 0, ty = 0; // To hold character TFT pixel coords
int32_t pc = 0; // Pixel count
int32_t pl = 0; // Pixel line length
uint16_t pcol = 0; // Pixel color
bool pf = true; // Flag for plotting
while (pc < w) {
uint8_t line = pgm_read_byte((uint8_t *)flash_address);
flash_address++;
if (line & 0x80) { pcol = textcolor; line &= 0x7F; pf = true;}
else { pcol = textbgcolor; if (textcolor == textbgcolor) pf = false;}
line++;
px = pc % width;
tx = cursor.x + textsize * px;
py = pc / width;
ty = cursor.y + textsize * py;
pl = 0;
pc += line;
while (line--) {
pl++;
if ((px+pl) >= width) {
if (pf) fillRect(clip, tx, ty, pl * textsize, textsize, pcol);
pl = 0;
px = 0;
tx = cursor.x;
py ++;
ty += textsize;
}
}
if (pl && pf) fillRect(clip, tx, ty, pl * textsize, textsize, pcol);
}
}
/***************************************************************************************
** Function name: drawChar
** Description: draw a Unicode glyph onto the screen
***************************************************************************************/
// TODO: Rationalise with TFT_eSprite
// Any UTF-8 decoding must be done before calling drawChar()
int16_t TFT_CHAR::drawChar(clip_t& clip, cursor_t& cursor, font_t& font, uint16_t uniCode, uint32_t textcolor, uint32_t textbgcolor)
{
if (!uniCode) return 0;
if (font.font == 1) {
#ifdef LOAD_GLCD
#ifndef LOAD_GFXFF
drawChar_GLCD_GFXFF(clip, cursor, font, uniCode, textcolor, textbgcolor);
return 6 * font.size;
#endif
#else
#ifndef LOAD_GFXFF
return 0;
#endif
#endif
#ifdef LOAD_GFXFF
drawChar_GLCD_GFXFF(clip, cursor, font, uniCode, textcolor, textbgcolor);
if (!font.gfxFont) { // 'Classic' built-in font
#ifdef LOAD_GLCD
return 6 * font.size;
#else
return 0;
#endif
}
else {
if((uniCode >= pgm_read_word(&font.gfxFont->first)) && (uniCode <= pgm_read_word(&font.gfxFont->last) )) {
uint16_t c2 = uniCode - pgm_read_word(&font.gfxFont->first);
GFXglyph *glyph = &(((GFXglyph *)pgm_read_dword(&font.gfxFont->glyph))[c2]);
return pgm_read_byte(&glyph->xAdvance) * font.size;
}
else {
return 0;
}
}
#endif
}
if ((font.font > 1) && (font.font < 9) && ((uniCode < 32) || (uniCode > 127))) return 0;
int32_t width = 0;
int32_t height = 0;
uint32_t flash_address = 0;
uniCode -= 32;
#ifdef LOAD_FONT2
if (font.font == 2) {
flash_address = pgm_read_dword(&chrtbl_f16[uniCode]);
width = pgm_read_byte(widtbl_f16 + uniCode);
height = chr_hgt_f16;
}
#ifdef LOAD_RLE
else
#endif
#endif
#ifdef LOAD_RLE
{
if ((font.font > 2) && (font.font < 9)) {
flash_address = pgm_read_dword( (const void*)(pgm_read_dword( &(fontdata[font.font].chartbl ) ) + uniCode*sizeof(void *)) );
width = pgm_read_byte( (uint8_t *)pgm_read_dword( &(fontdata[font.font].widthtbl ) ) + uniCode );
height= pgm_read_byte( &fontdata[font.font].height );
}
}
#endif
int32_t xd = cursor.x + clip.xDatum;
int32_t yd = cursor.y + clip.yDatum;
if ((xd + width * font.size < clip.x1 || xd >= clip.x2) && (yd + height * font.size < clip.y1 || yd >= clip.y2)) return width * font.size ;
bool offclip = xd < clip.x1 || xd + width * font.size >= clip.x2 || yd < clip.y1 || yd + height * font.size >= clip.y2;
#ifdef LOAD_FONT2 // chop out code if we do not need it
if (font.font == 2) {
if (textcolor == textbgcolor || font.size != 1 || offclip) {
//begin_tft_write(); // Sprite class can use this function, avoiding begin_tft_write()
inTransaction = true;
drawCharFont2(clip, cursor, width, height, font.size, textcolor, textbgcolor, flash_address);
inTransaction = lockTransaction;
end_tft_write();
}
else { // Faster drawing of characters and background using block write
begin_tft_write();
setWindow(xd, yd, width, height);
drawCharFont2Faster(width, height, textcolor, textbgcolor, flash_address);
end_tft_write();
}
}
#ifdef LOAD_RLE
else
#endif
#endif //FONT2
#ifdef LOAD_RLE //674 bytes of code
// Font is not 2 and hence is RLE encoded
{
begin_tft_write();
inTransaction = true;
if (textcolor == textbgcolor && !offclip) {
drawCharRLEfont(xd, yd, cursor.y, width, height, font.size, textcolor, flash_address);
}
else {
// Text colour != background and font.size = 1 and character is within viewport area
// so use faster drawing of characters and background using block write
if (textcolor != textbgcolor && font.size == 1 && !offclip) {
setWindow(xd, yd, width, height);
drawCharRLE_1(width, height, textcolor, textbgcolor, flash_address);
}
else {
drawCharRLE_3(clip, cursor, width, height, font.size, textcolor, textbgcolor, flash_address);
}
}
inTransaction = lockTransaction;
end_tft_write();
}
// End of RLE font rendering
#endif
return width * font.size; // x +
}
#ifdef SMOOTH_FONT
#include "Extensions/Smooth_font.cpp"
#endif