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Weather_ESP/components/tft/tft.c

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/* TFT module
*
* Author: LoBo (loboris@gmail.com, loboris.github)
*
* Module supporting SPI TFT displays based on ILI9341 & ILI9488 controllers
*/
#include <stdio.h>
#include <errno.h>
#include <sys/stat.h>
#include <string.h>
#include "freertos/FreeRTOS.h"
#include "tft.h"
#include <math.h>
#include "esp32/rom/tjpgd.h"
#define DEG_TO_RAD 0.01745329252
#define deg_to_rad 0.01745329252 + 3.14159265359
#define swap(a, b) { int16_t t = a; a = b; b = t; }
#if !defined(max)
#define max(A,B) ( (A) > (B) ? (A):(B))
#endif
#if !defined(min)
#define min(A,B) ( (A) < (B) ? (A):(B))
#endif
// Embedded fonts
extern uint8_t tft_SmallFont[];
extern uint8_t tft_DefaultFont[];
extern uint8_t tft_Dejavu18[];
extern uint8_t tft_Dejavu24[];
extern uint8_t tft_Ubuntu16[];
extern uint8_t tft_Comic24[];
extern uint8_t tft_minya24[];
extern uint8_t tft_tooney32[];
extern uint8_t tft_def_small[];
// ==== Color definitions constants ==============
const color_t TFT_BLACK = { 0, 0, 0 };
const color_t TFT_NAVY = { 0, 0, 128 };
const color_t TFT_DARKGREEN = { 0, 128, 0 };
const color_t TFT_DARKCYAN = { 0, 128, 128 };
const color_t TFT_MAROON = { 128, 0, 0 };
const color_t TFT_PURPLE = { 128, 0, 128 };
const color_t TFT_OLIVE = { 128, 128, 0 };
const color_t TFT_LIGHTGREY = { 192, 192, 192 };
const color_t TFT_DARKGREY = { 128, 128, 128 };
const color_t TFT_BLUE = { 0, 0, 255 };
const color_t TFT_GREEN = { 0, 255, 0 };
const color_t TFT_CYAN = { 0, 255, 255 };
const color_t TFT_RED = { 252, 0, 0 };
const color_t TFT_MAGENTA = { 252, 0, 255 };
const color_t TFT_YELLOW = { 252, 252, 0 };
const color_t TFT_WHITE = { 252, 252, 252 };
const color_t TFT_ORANGE = { 252, 164, 0 };
const color_t TFT_GREENYELLOW = { 172, 252, 44 };
const color_t TFT_PINK = { 252, 192, 202 };
// ===============================================
// ==============================================================
// ==== Set default values of global variables ==================
uint8_t tft_orientation = LANDSCAPE;// screen tft_orientation
uint16_t tft_font_rotate = 0; // font rotation
uint8_t tft_font_transparent = 0;
uint8_t tft_font_forceFixed = 0;
uint8_t tft_text_wrap = 0; // character wrapping to new line
color_t tft_fg = { 0, 255, 0};
color_t tft_bg = { 0, 0, 0};
uint8_t tft_image_debug = 0;
float tft_angleOffset = DEFAULT_ANGLE_OFFSET;
int tft_x = 0;
int tft_y = 0;
uint32_t tft_tp_calx = 7472920;
uint32_t tft_tp_caly = 122224794;
dispWin_t tft_dispWin = {
.x1 = TFT_STATIC_WIDTH_OFFSET,
.y1 = TFT_STATIC_HEIGHT_OFFSET,
.x2 = DEFAULT_TFT_DISPLAY_WIDTH + TFT_STATIC_WIDTH_OFFSET,
.y2 = DEFAULT_TFT_DISPLAY_HEIGHT + TFT_STATIC_HEIGHT_OFFSET,
};
Font tft_cfont = {
.font = tft_DefaultFont,
.x_size = 0,
.y_size = 0x0B,
.offset = 0,
.numchars = 95,
.bitmap = 1,
};
uint8_t tft_font_buffered_char = 1;
uint8_t tft_font_line_space = 0;
// ==============================================================
typedef struct {
uint8_t charCode;
int adjYOffset;
int width;
int height;
int xOffset;
int xDelta;
uint16_t dataPtr;
} propFont;
static dispWin_t dispWinTemp;
static uint8_t *userfont = NULL;
static int TFT_OFFSET = 0;
static propFont fontChar;
static float _arcAngleMax = DEFAULT_ARC_ANGLE_MAX;
// =========================================================================
// ** All drawings are clipped to 'tft_dispWin' **
// ** All x,y coordinates in public functions are relative to clip window **
// =========== : Public functions
// ----------- : Local functions
// =========================================================================
// Compare two colors; return 0 if equal
//============================================
int TFT_compare_colors(color_t c1, color_t c2)
{
if ((c1.r & 0xFC) != (c2.r & 0xFC)) return 1;
if ((c1.g & 0xFC) != (c2.g & 0xFC)) return 1;
if ((c1.b & 0xFC) != (c2.b & 0xFC)) return 1;
return 0;
}
// draw color pixel on screen
//------------------------------------------------------------------------
static void _drawPixel(int16_t x, int16_t y, color_t color, uint8_t sel) {
if ((x < tft_dispWin.x1) || (y < tft_dispWin.y1) || (x > tft_dispWin.x2) || (y > tft_dispWin.y2)) return;
drawPixel(x, y, color, sel);
}
//====================================================================
void TFT_drawPixel(int16_t x, int16_t y, color_t color, uint8_t sel) {
_drawPixel(x+tft_dispWin.x1, y+tft_dispWin.y1, color, sel);
}
//===========================================
color_t TFT_readPixel(int16_t x, int16_t y) {
if ((x < tft_dispWin.x1) || (y < tft_dispWin.y1) || (x > tft_dispWin.x2) || (y > tft_dispWin.y2)) return TFT_BLACK;
return readPixel(x, y);
}
//--------------------------------------------------------------------------
static void _drawFastVLine(int16_t x, int16_t y, int16_t h, color_t color) {
// clipping
if ((x < tft_dispWin.x1) || (x > tft_dispWin.x2) || (y > tft_dispWin.y2)) return;
if (y < tft_dispWin.y1) {
h -= (tft_dispWin.y1 - y);
y = tft_dispWin.y1;
}
if (h < 0) h = 0;
if ((y + h) > (tft_dispWin.y2+1)) h = tft_dispWin.y2 - y + 1;
if (h == 0) h = 1;
TFT_pushColorRep(x, y, x, y+h-1, color, (uint32_t)h);
}
//--------------------------------------------------------------------------
static void _drawFastHLine(int16_t x, int16_t y, int16_t w, color_t color) {
// clipping
if ((y < tft_dispWin.y1) || (x > tft_dispWin.x2) || (y > tft_dispWin.y2)) return;
if (x < tft_dispWin.x1) {
w -= (tft_dispWin.x1 - x);
x = tft_dispWin.x1;
}
if (w < 0) w = 0;
if ((x + w) > (tft_dispWin.x2+1)) w = tft_dispWin.x2 - x + 1;
if (w == 0) w = 1;
TFT_pushColorRep(x, y, x+w-1, y, color, (uint32_t)w);
}
//======================================================================
void TFT_drawFastVLine(int16_t x, int16_t y, int16_t h, color_t color) {
_drawFastVLine(x+tft_dispWin.x1, y+tft_dispWin.y1, h, color);
}
//======================================================================
void TFT_drawFastHLine(int16_t x, int16_t y, int16_t w, color_t color) {
_drawFastHLine(x+tft_dispWin.x1, y+tft_dispWin.y1, w, color);
}
// Bresenham's algorithm - thx wikipedia - speed enhanced by Bodmer this uses
// the eficient FastH/V Line draw routine for segments of 2 pixels or more
//----------------------------------------------------------------------------------
static void _drawLine(int16_t x0, int16_t y0, int16_t x1, int16_t y1, color_t color)
{
if (x0 == x1) {
if (y0 <= y1) _drawFastVLine(x0, y0, y1-y0, color);
else _drawFastVLine(x0, y1, y0-y1, color);
return;
}
if (y0 == y1) {
if (x0 <= x1) _drawFastHLine(x0, y0, x1-x0, color);
else _drawFastHLine(x1, y0, x0-x1, color);
return;
}
int steep = 0;
if (abs(y1 - y0) > abs(x1 - x0)) steep = 1;
if (steep) {
swap(x0, y0);
swap(x1, y1);
}
if (x0 > x1) {
swap(x0, x1);
swap(y0, y1);
}
int16_t dx = x1 - x0, dy = abs(y1 - y0);
int16_t err = dx >> 1, ystep = -1, xs = x0, dlen = 0;
if (y0 < y1) ystep = 1;
// Split into steep and not steep for FastH/V separation
if (steep) {
for (; x0 <= x1; x0++) {
dlen++;
err -= dy;
if (err < 0) {
err += dx;
if (dlen == 1) _drawPixel(y0, xs, color, 1);
else _drawFastVLine(y0, xs, dlen, color);
dlen = 0; y0 += ystep; xs = x0 + 1;
}
}
if (dlen) _drawFastVLine(y0, xs, dlen, color);
}
else
{
for (; x0 <= x1; x0++) {
dlen++;
err -= dy;
if (err < 0) {
err += dx;
if (dlen == 1) _drawPixel(xs, y0, color, 1);
else _drawFastHLine(xs, y0, dlen, color);
dlen = 0; y0 += ystep; xs = x0 + 1;
}
}
if (dlen) _drawFastHLine(xs, y0, dlen, color);
}
}
//==============================================================================
void TFT_drawLine(int16_t x0, int16_t y0, int16_t x1, int16_t y1, color_t color)
{
_drawLine(x0+tft_dispWin.x1, y0+tft_dispWin.y1, x1+tft_dispWin.x1, y1+tft_dispWin.y1, color);
}
// fill a rectangle
//--------------------------------------------------------------------------------
static void _fillRect(int16_t x, int16_t y, int16_t w, int16_t h, color_t color) {
// clipping
if ((x >= tft_dispWin.x2) || (y > tft_dispWin.y2)) return;
if (x < tft_dispWin.x1) {
w -= (tft_dispWin.x1 - x);
x = tft_dispWin.x1;
}
if (y < tft_dispWin.y1) {
h -= (tft_dispWin.y1 - y);
y = tft_dispWin.y1;
}
if (w < 0) w = 0;
if (h < 0) h = 0;
if ((x + w) > (tft_dispWin.x2+1)) w = tft_dispWin.x2 - x + 1;
if ((y + h) > (tft_dispWin.y2+1)) h = tft_dispWin.y2 - y + 1;
if (w == 0) w = 1;
if (h == 0) h = 1;
TFT_pushColorRep(x, y, x+w-1, y+h-1, color, (uint32_t)(h*w));
}
//============================================================================
void TFT_fillRect(int16_t x, int16_t y, int16_t w, int16_t h, color_t color) {
_fillRect(x+tft_dispWin.x1, y+tft_dispWin.y1, w, h, color);
}
//==================================
void TFT_fillScreen(color_t color) {
TFT_pushColorRep(TFT_STATIC_X_OFFSET, TFT_STATIC_Y_OFFSET, tft_width + TFT_STATIC_X_OFFSET -1, tft_height + TFT_STATIC_Y_OFFSET -1, color, (uint32_t)(tft_height*tft_width));
}
//==================================
void TFT_fillWindow(color_t color) {
TFT_pushColorRep(tft_dispWin.x1, tft_dispWin.y1, tft_dispWin.x2, tft_dispWin.y2,
color, (uint32_t)((tft_dispWin.x2-tft_dispWin.x1+1) * (tft_dispWin.y2-tft_dispWin.y1+1)));
}
// ^^^============= Basics drawing functions ================================^^^
// ================ Graphics drawing functions ==================================
//-----------------------------------------------------------------------------------
static void _drawRect(uint16_t x1,uint16_t y1,uint16_t w,uint16_t h, color_t color) {
_drawFastHLine(x1,y1,w, color);
_drawFastVLine(x1+w-1,y1,h, color);
_drawFastHLine(x1,y1+h-1,w, color);
_drawFastVLine(x1,y1,h, color);
}
//===============================================================================
void TFT_drawRect(uint16_t x1,uint16_t y1,uint16_t w,uint16_t h, color_t color) {
_drawRect(x1+tft_dispWin.x1, y1+tft_dispWin.y1, w, h, color);
}
//-------------------------------------------------------------------------------------------------
static void drawCircleHelper(int16_t x0, int16_t y0, int16_t r, uint8_t cornername, color_t color)
{
int16_t f = 1 - r;
int16_t ddF_x = 1;
int16_t ddF_y = -2 * r;
int16_t x = 0;
int16_t y = r;
disp_select();
while (x < y) {
if (f >= 0) {
y--;
ddF_y += 2;
f += ddF_y;
}
x++;
ddF_x += 2;
f += ddF_x;
if (cornername & 0x4) {
_drawPixel(x0 + x, y0 + y, color, 0);
_drawPixel(x0 + y, y0 + x, color, 0);
}
if (cornername & 0x2) {
_drawPixel(x0 + x, y0 - y, color, 0);
_drawPixel(x0 + y, y0 - x, color, 0);
}
if (cornername & 0x8) {
_drawPixel(x0 - y, y0 + x, color, 0);
_drawPixel(x0 - x, y0 + y, color, 0);
}
if (cornername & 0x1) {
_drawPixel(x0 - y, y0 - x, color, 0);
_drawPixel(x0 - x, y0 - y, color, 0);
}
}
disp_deselect();
}
// Used to do circles and roundrects
//----------------------------------------------------------------------------------------------------------------
static void fillCircleHelper(int16_t x0, int16_t y0, int16_t r, uint8_t cornername, int16_t delta, color_t color)
{
int16_t f = 1 - r;
int16_t ddF_x = 1;
int16_t ddF_y = -2 * r;
int16_t x = 0;
int16_t y = r;
int16_t ylm = x0 - r;
while (x < y) {
if (f >= 0) {
if (cornername & 0x1) _drawFastVLine(x0 + y, y0 - x, 2 * x + 1 + delta, color);
if (cornername & 0x2) _drawFastVLine(x0 - y, y0 - x, 2 * x + 1 + delta, color);
ylm = x0 - y;
y--;
ddF_y += 2;
f += ddF_y;
}
x++;
ddF_x += 2;
f += ddF_x;
if ((x0 - x) > ylm) {
if (cornername & 0x1) _drawFastVLine(x0 + x, y0 - y, 2 * y + 1 + delta, color);
if (cornername & 0x2) _drawFastVLine(x0 - x, y0 - y, 2 * y + 1 + delta, color);
}
}
}
// Draw a rounded rectangle
//=============================================================================================
void TFT_drawRoundRect(int16_t x, int16_t y, uint16_t w, uint16_t h, uint16_t r, color_t color)
{
x += tft_dispWin.x1;
y += tft_dispWin.y1;
// smarter version
_drawFastHLine(x + r, y, w - 2 * r, color); // Top
_drawFastHLine(x + r, y + h - 1, w - 2 * r, color); // Bottom
_drawFastVLine(x, y + r, h - 2 * r, color); // Left
_drawFastVLine(x + w - 1, y + r, h - 2 * r, color); // Right
// draw four corners
drawCircleHelper(x + r, y + r, r, 1, color);
drawCircleHelper(x + w - r - 1, y + r, r, 2, color);
drawCircleHelper(x + w - r - 1, y + h - r - 1, r, 4, color);
drawCircleHelper(x + r, y + h - r - 1, r, 8, color);
}
// Fill a rounded rectangle
//=============================================================================================
void TFT_fillRoundRect(int16_t x, int16_t y, uint16_t w, uint16_t h, uint16_t r, color_t color)
{
x += tft_dispWin.x1;
y += tft_dispWin.y1;
// smarter version
_fillRect(x + r, y, w - 2 * r, h, color);
// draw four corners
fillCircleHelper(x + w - r - 1, y + r, r, 1, h - 2 * r - 1, color);
fillCircleHelper(x + r, y + r, r, 2, h - 2 * r - 1, color);
}
//-----------------------------------------------------------------------------------------------
static void _drawLineByAngle(int16_t x, int16_t y, int16_t angle, uint16_t length, color_t color)
{
_drawLine(
x,
y,
x + length * cos((angle + tft_angleOffset) * DEG_TO_RAD),
y + length * sin((angle + tft_angleOffset) * DEG_TO_RAD), color);
}
//---------------------------------------------------------------------------------------------------------------
static void _DrawLineByAngle(int16_t x, int16_t y, int16_t angle, uint16_t start, uint16_t length, color_t color)
{
_drawLine(
x + start * cos((angle + tft_angleOffset) * DEG_TO_RAD),
y + start * sin((angle + tft_angleOffset) * DEG_TO_RAD),
x + (start + length) * cos((angle + tft_angleOffset) * DEG_TO_RAD),
y + (start + length) * sin((angle + tft_angleOffset) * DEG_TO_RAD), color);
}
//===========================================================================================================
void TFT_drawLineByAngle(uint16_t x, uint16_t y, uint16_t start, uint16_t len, uint16_t angle, color_t color)
{
x += tft_dispWin.x1;
y += tft_dispWin.y1;
if (start == 0) _drawLineByAngle(x, y, angle, len, color);
else _DrawLineByAngle(x, y, angle, start, len, color);
}
// Draw a triangle
//--------------------------------------------------------------------------------------------------------------------
static void _drawTriangle(uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2, color_t color)
{
_drawLine(x0, y0, x1, y1, color);
_drawLine(x1, y1, x2, y2, color);
_drawLine(x2, y2, x0, y0, color);
}
//================================================================================================================
void TFT_drawTriangle(uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2, color_t color)
{
x0 += tft_dispWin.x1;
y0 += tft_dispWin.y1;
x1 += tft_dispWin.x1;
y1 += tft_dispWin.y1;
x2 += tft_dispWin.x1;
y2 += tft_dispWin.y1;
_drawLine(x0, y0, x1, y1, color);
_drawLine(x1, y1, x2, y2, color);
_drawLine(x2, y2, x0, y0, color);
}
// Fill a triangle
//--------------------------------------------------------------------------------------------------------------------
static void _fillTriangle(uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2, color_t color)
{
int16_t a, b, y, last;
// Sort coordinates by Y order (y2 >= y1 >= y0)
if (y0 > y1) {
swap(y0, y1); swap(x0, x1);
}
if (y1 > y2) {
swap(y2, y1); swap(x2, x1);
}
if (y0 > y1) {
swap(y0, y1); swap(x0, x1);
}
if(y0 == y2) { // Handle awkward all-on-same-line case as its own thing
a = b = x0;
if(x1 < a) a = x1;
else if(x1 > b) b = x1;
if(x2 < a) a = x2;
else if(x2 > b) b = x2;
_drawFastHLine(a, y0, b-a+1, color);
return;
}
int16_t
dx01 = x1 - x0,
dy01 = y1 - y0,
dx02 = x2 - x0,
dy02 = y2 - y0,
dx12 = x2 - x1,
dy12 = y2 - y1;
int32_t
sa = 0,
sb = 0;
// For upper part of triangle, find scanline crossings for segments
// 0-1 and 0-2. If y1=y2 (flat-bottomed triangle), the scanline y1
// is included here (and second loop will be skipped, avoiding a /0
// error there), otherwise scanline y1 is skipped here and handled
// in the second loop...which also avoids a /0 error here if y0=y1
// (flat-topped triangle).
if(y1 == y2) last = y1; // Include y1 scanline
else last = y1-1; // Skip it
for(y=y0; y<=last; y++) {
a = x0 + sa / dy01;
b = x0 + sb / dy02;
sa += dx01;
sb += dx02;
/* longhand:
a = x0 + (x1 - x0) * (y - y0) / (y1 - y0);
b = x0 + (x2 - x0) * (y - y0) / (y2 - y0);
*/
if(a > b) swap(a,b);
_drawFastHLine(a, y, b-a+1, color);
}
// For lower part of triangle, find scanline crossings for segments
// 0-2 and 1-2. This loop is skipped if y1=y2.
sa = dx12 * (y - y1);
sb = dx02 * (y - y0);
for(; y<=y2; y++) {
a = x1 + sa / dy12;
b = x0 + sb / dy02;
sa += dx12;
sb += dx02;
/* longhand:
a = x1 + (x2 - x1) * (y - y1) / (y2 - y1);
b = x0 + (x2 - x0) * (y - y0) / (y2 - y0);
*/
if(a > b) swap(a,b);
_drawFastHLine(a, y, b-a+1, color);
}
}
//================================================================================================================
void TFT_fillTriangle(uint16_t x0, uint16_t y0, uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2, color_t color)
{
_fillTriangle(
x0 + tft_dispWin.x1, y0 + tft_dispWin.y1,
x1 + tft_dispWin.x1, y1 + tft_dispWin.y1,
x2 + tft_dispWin.x1, y2 + tft_dispWin.y1,
color);
}
//====================================================================
void TFT_drawCircle(int16_t x, int16_t y, int radius, color_t color) {
x += tft_dispWin.x1;
y += tft_dispWin.y1;
int f = 1 - radius;
int ddF_x = 1;
int ddF_y = -2 * radius;
int x1 = 0;
int y1 = radius;
disp_select();
_drawPixel(x, y + radius, color, 0);
_drawPixel(x, y - radius, color, 0);
_drawPixel(x + radius, y, color, 0);
_drawPixel(x - radius, y, color, 0);
while(x1 < y1) {
if (f >= 0) {
y1--;
ddF_y += 2;
f += ddF_y;
}
x1++;
ddF_x += 2;
f += ddF_x;
_drawPixel(x + x1, y + y1, color, 0);
_drawPixel(x - x1, y + y1, color, 0);
_drawPixel(x + x1, y - y1, color, 0);
_drawPixel(x - x1, y - y1, color, 0);
_drawPixel(x + y1, y + x1, color, 0);
_drawPixel(x - y1, y + x1, color, 0);
_drawPixel(x + y1, y - x1, color, 0);
_drawPixel(x - y1, y - x1, color, 0);
}
disp_deselect();
}
//====================================================================
void TFT_fillCircle(int16_t x, int16_t y, int radius, color_t color) {
x += tft_dispWin.x1;
y += tft_dispWin.y1;
_drawFastVLine(x, y-radius, 2*radius+1, color);
fillCircleHelper(x, y, radius, 3, 0, color);
}
//----------------------------------------------------------------------------------------------------------------
static void _draw_ellipse_section(uint16_t x, uint16_t y, uint16_t x0, uint16_t y0, color_t color, uint8_t option)
{
disp_select();
// upper right
if ( option & TFT_ELLIPSE_UPPER_RIGHT ) _drawPixel(x0 + x, y0 - y, color, 0);
// upper left
if ( option & TFT_ELLIPSE_UPPER_LEFT ) _drawPixel(x0 - x, y0 - y, color, 0);
// lower right
if ( option & TFT_ELLIPSE_LOWER_RIGHT ) _drawPixel(x0 + x, y0 + y, color, 0);
// lower left
if ( option & TFT_ELLIPSE_LOWER_LEFT ) _drawPixel(x0 - x, y0 + y, color, 0);
disp_deselect();
}
//=====================================================================================================
void TFT_drawEllipse(uint16_t x0, uint16_t y0, uint16_t rx, uint16_t ry, color_t color, uint8_t option)
{
x0 += tft_dispWin.x1;
y0 += tft_dispWin.y1;
uint16_t x, y;
int32_t xchg, ychg;
int32_t err;
int32_t rxrx2;
int32_t ryry2;
int32_t stopx, stopy;
rxrx2 = rx;
rxrx2 *= rx;
rxrx2 *= 2;
ryry2 = ry;
ryry2 *= ry;
ryry2 *= 2;
x = rx;
y = 0;
xchg = 1;
xchg -= rx;
xchg -= rx;
xchg *= ry;
xchg *= ry;
ychg = rx;
ychg *= rx;
err = 0;
stopx = ryry2;
stopx *= rx;
stopy = 0;
while( stopx >= stopy ) {
_draw_ellipse_section(x, y, x0, y0, color, option);
y++;
stopy += rxrx2;
err += ychg;
ychg += rxrx2;
if ( 2*err+xchg > 0 ) {
x--;
stopx -= ryry2;
err += xchg;
xchg += ryry2;
}
}
x = 0;
y = ry;
xchg = ry;
xchg *= ry;
ychg = 1;
ychg -= ry;
ychg -= ry;
ychg *= rx;
ychg *= rx;
err = 0;
stopx = 0;
stopy = rxrx2;
stopy *= ry;
while( stopx <= stopy ) {
_draw_ellipse_section(x, y, x0, y0, color, option);
x++;
stopx += ryry2;
err += xchg;
xchg += ryry2;
if ( 2*err+ychg > 0 ) {
y--;
stopy -= rxrx2;
err += ychg;
ychg += rxrx2;
}
}
}
//-----------------------------------------------------------------------------------------------------------------------
static void _draw_filled_ellipse_section(uint16_t x, uint16_t y, uint16_t x0, uint16_t y0, color_t color, uint8_t option)
{
// upper right
if ( option & TFT_ELLIPSE_UPPER_RIGHT ) _drawFastVLine(x0+x, y0-y, y+1, color);
// upper left
if ( option & TFT_ELLIPSE_UPPER_LEFT ) _drawFastVLine(x0-x, y0-y, y+1, color);
// lower right
if ( option & TFT_ELLIPSE_LOWER_RIGHT ) _drawFastVLine(x0+x, y0, y+1, color);
// lower left
if ( option & TFT_ELLIPSE_LOWER_LEFT ) _drawFastVLine(x0-x, y0, y+1, color);
}
//=====================================================================================================
void TFT_fillEllipse(uint16_t x0, uint16_t y0, uint16_t rx, uint16_t ry, color_t color, uint8_t option)
{
x0 += tft_dispWin.x1;
y0 += tft_dispWin.y1;
uint16_t x, y;
int32_t xchg, ychg;
int32_t err;
int32_t rxrx2;
int32_t ryry2;
int32_t stopx, stopy;
rxrx2 = rx;
rxrx2 *= rx;
rxrx2 *= 2;
ryry2 = ry;
ryry2 *= ry;
ryry2 *= 2;
x = rx;
y = 0;
xchg = 1;
xchg -= rx;
xchg -= rx;
xchg *= ry;
xchg *= ry;
ychg = rx;
ychg *= rx;
err = 0;
stopx = ryry2;
stopx *= rx;
stopy = 0;
while( stopx >= stopy ) {
_draw_filled_ellipse_section(x, y, x0, y0, color, option);
y++;
stopy += rxrx2;
err += ychg;
ychg += rxrx2;
if ( 2*err+xchg > 0 ) {
x--;
stopx -= ryry2;
err += xchg;
xchg += ryry2;
}
}
x = 0;
y = ry;
xchg = ry;
xchg *= ry;
ychg = 1;
ychg -= ry;
ychg -= ry;
ychg *= rx;
ychg *= rx;
err = 0;
stopx = 0;
stopy = rxrx2;
stopy *= ry;
while( stopx <= stopy ) {
_draw_filled_ellipse_section(x, y, x0, y0, color, option);
x++;
stopx += ryry2;
err += xchg;
xchg += ryry2;
if ( 2*err+ychg > 0 ) {
y--;
stopy -= rxrx2;
err += ychg;
ychg += rxrx2;
}
}
}
// ==== ARC DRAWING ===================================================================
//---------------------------------------------------------------------------------------------------------------------------------
static void _fillArcOffsetted(uint16_t cx, uint16_t cy, uint16_t radius, uint16_t thickness, float start, float end, color_t color)
{
//float sslope = (float)cos_lookup(start) / (float)sin_lookup(start);
//float eslope = (float)cos_lookup(end) / (float)sin_lookup(end);
float sslope = (cos(start/_arcAngleMax * 2 * PI) * _arcAngleMax) / (sin(start/_arcAngleMax * 2 * PI) * _arcAngleMax) ;
float eslope = (cos(end/_arcAngleMax * 2 * PI) * _arcAngleMax) / (sin(end/_arcAngleMax * 2 * PI) * _arcAngleMax);
if (end == 360) eslope = -1000000;
int ir2 = (radius - thickness) * (radius - thickness);
int or2 = radius * radius;
disp_select();
for (int x = -radius; x <= radius; x++) {
for (int y = -radius; y <= radius; y++) {
int x2 = x * x;
int y2 = y * y;
if (
(x2 + y2 < or2 && x2 + y2 >= ir2) &&
(
(y > 0 && start < 180 && x <= y * sslope) ||
(y < 0 && start > 180 && x >= y * sslope) ||
(y < 0 && start <= 180) ||
(y == 0 && start <= 180 && x < 0) ||
(y == 0 && start == 0 && x > 0)
) &&
(
(y > 0 && end < 180 && x >= y * eslope) ||
(y < 0 && end > 180 && x <= y * eslope) ||
(y > 0 && end >= 180) ||
(y == 0 && end >= 180 && x < 0) ||
(y == 0 && start == 0 && x > 0)
)
)
_drawPixel(cx+x, cy+y, color, 0);
}
}
disp_deselect();
}
//===========================================================================================================================
void TFT_drawArc(uint16_t cx, uint16_t cy, uint16_t r, uint16_t th, float start, float end, color_t color, color_t fillcolor)
{
cx += tft_dispWin.x1;
cy += tft_dispWin.y1;
if (th < 1) th = 1;
if (th > r) th = r;
int f = TFT_compare_colors(fillcolor, color);
float astart = fmodf(start, _arcAngleMax);
float aend = fmodf(end, _arcAngleMax);
astart += tft_angleOffset;
aend += tft_angleOffset;
if (astart < 0) astart += (float)360;
if (aend < 0) aend += (float)360;
if (aend == 0) aend = (float)360;
if (astart > aend) {
_fillArcOffsetted(cx, cy, r, th, astart, _arcAngleMax, fillcolor);
_fillArcOffsetted(cx, cy, r, th, 0, aend, fillcolor);
if (f) {
_fillArcOffsetted(cx, cy, r, 1, astart, _arcAngleMax, color);
_fillArcOffsetted(cx, cy, r, 1, 0, aend, color);
_fillArcOffsetted(cx, cy, r-th, 1, astart, _arcAngleMax, color);
_fillArcOffsetted(cx, cy, r-th, 1, 0, aend, color);
}
}
else {
_fillArcOffsetted(cx, cy, r, th, astart, aend, fillcolor);
if (f) {
_fillArcOffsetted(cx, cy, r, 1, astart, aend, color);
_fillArcOffsetted(cx, cy, r-th, 1, astart, aend, color);
}
}
if (f) {
_drawLine(cx + (r-th) * cos(astart * DEG_TO_RAD), cy + (r-th) * sin(astart * DEG_TO_RAD),
cx + (r-1) * cos(astart * DEG_TO_RAD), cy + (r-1) * sin(astart * DEG_TO_RAD), color);
_drawLine(cx + (r-th) * cos(aend * DEG_TO_RAD), cy + (r-th) * sin(aend * DEG_TO_RAD),
cx + (r-1) * cos(aend * DEG_TO_RAD), cy + (r-1) * sin(aend * DEG_TO_RAD), color);
}
}
//=============================================================================================================
void TFT_drawPolygon(int cx, int cy, int sides, int diameter, color_t color, color_t fill, int rot, uint8_t th)
{
cx += tft_dispWin.x1;
cy += tft_dispWin.y1;
int deg = rot - tft_angleOffset;
int f = TFT_compare_colors(fill, color);
if (sides < MIN_POLIGON_SIDES) sides = MIN_POLIGON_SIDES; // This ensures the minimum side number
if (sides > MAX_POLIGON_SIDES) sides = MAX_POLIGON_SIDES; // This ensures the maximum side number
int Xpoints[sides], Ypoints[sides]; // Set the arrays based on the number of sides entered
int rads = 360 / sides; // This equally spaces the points.
for (int idx = 0; idx < sides; idx++) {
Xpoints[idx] = cx + sin((float)(idx*rads + deg) * deg_to_rad) * diameter;
Ypoints[idx] = cy + cos((float)(idx*rads + deg) * deg_to_rad) * diameter;
}
// Draw the polygon on the screen.
if (f) {
for(int idx = 0; idx < sides; idx++) {
if((idx+1) < sides) _fillTriangle(cx,cy,Xpoints[idx],Ypoints[idx],Xpoints[idx+1],Ypoints[idx+1], fill);
else _fillTriangle(cx,cy,Xpoints[idx],Ypoints[idx],Xpoints[0],Ypoints[0], fill);
}
}
if (th) {
for (int n=0; n<th; n++) {
if (n > 0) {
for (int idx = 0; idx < sides; idx++) {
Xpoints[idx] = cx + sin((float)(idx*rads + deg) * deg_to_rad) * (diameter-n);
Ypoints[idx] = cy + cos((float)(idx*rads + deg) * deg_to_rad) * (diameter-n);
}
}
for(int idx = 0; idx < sides; idx++) {
if( (idx+1) < sides)
_drawLine(Xpoints[idx],Ypoints[idx],Xpoints[idx+1],Ypoints[idx+1], color); // draw the lines
else
_drawLine(Xpoints[idx],Ypoints[idx],Xpoints[0],Ypoints[0], color); // finishes the last line to close up the polygon.
}
}
}
}
/*
// Similar to the Polygon function.
//=====================================================================================
void TFT_drawStar(int cx, int cy, int diameter, color_t color, bool fill, float factor)
{
cx += tft_dispWin.x1;
cy += tft_dispWin.y1;
factor = constrain(factor, 1.0, 4.0);
uint8_t sides = 5;
uint8_t rads = 360 / sides;
int Xpoints_O[sides], Ypoints_O[sides], Xpoints_I[sides], Ypoints_I[sides];//Xpoints_T[5], Ypoints_T[5];
for(int idx = 0; idx < sides; idx++) {
// makes the outer points
Xpoints_O[idx] = cx + sin((float)(idx*rads + 72) * deg_to_rad) * diameter;
Ypoints_O[idx] = cy + cos((float)(idx*rads + 72) * deg_to_rad) * diameter;
// makes the inner points
Xpoints_I[idx] = cx + sin((float)(idx*rads + 36) * deg_to_rad) * ((float)(diameter)/factor);
// 36 is half of 72, and this will allow the inner and outer points to line up like a triangle.
Ypoints_I[idx] = cy + cos((float)(idx*rads + 36) * deg_to_rad) * ((float)(diameter)/factor);
}
for(int idx = 0; idx < sides; idx++) {
if((idx+1) < sides) {
if(fill) {// this part below should be self explanatory. It fills in the star.
_fillTriangle(cx,cy,Xpoints_I[idx],Ypoints_I[idx],Xpoints_O[idx],Ypoints_O[idx], color);
_fillTriangle(cx,cy,Xpoints_O[idx],Ypoints_O[idx],Xpoints_I[idx+1],Ypoints_I[idx+1], color);
}
else {
_drawLine(Xpoints_O[idx],Ypoints_O[idx],Xpoints_I[idx+1],Ypoints_I[idx+1], color);
_drawLine(Xpoints_I[idx],Ypoints_I[idx],Xpoints_O[idx],Ypoints_O[idx], color);
}
}
else {
if(fill) {
_fillTriangle(cx,cy,Xpoints_I[0],Ypoints_I[0],Xpoints_O[idx],Ypoints_O[idx], color);
_fillTriangle(cx,cy,Xpoints_O[idx],Ypoints_O[idx],Xpoints_I[idx],Ypoints_I[idx], color);
}
else {
_drawLine(Xpoints_O[idx],Ypoints_O[idx],Xpoints_I[idx],Ypoints_I[idx], color);
_drawLine(Xpoints_I[0],Ypoints_I[0],Xpoints_O[idx],Ypoints_O[idx], color);
}
}
}
}
*/
// ================ Font and string functions ==================================
//--------------------------------------------------------
static int load_file_font(const char * fontfile, int info)
{
int err = 0;
char err_msg[256] = {'\0'};
if (userfont != NULL) {
free(userfont);
userfont = NULL;
}
struct stat sb;
// Open the file
FILE *fhndl = fopen(fontfile, "r");
if (!fhndl) {
sprintf(err_msg, "Error opening font file '%s'", fontfile);
err = 1;
goto exit;
}
// Get file size
if (stat(fontfile, &sb) != 0) {
sprintf(err_msg, "Error getting font file size");
err = 2;
goto exit;
}
int fsize = sb.st_size;
if (fsize < 30) {
sprintf(err_msg, "Error getting font file size");
err = 3;
goto exit;
}
userfont = malloc(fsize+4);
if (userfont == NULL) {
sprintf(err_msg, "Font memory allocation error");
fclose(fhndl);
err = 4;
goto exit;
}
int read = fread(userfont, 1, fsize, fhndl);
fclose(fhndl);
if (read != fsize) {
sprintf(err_msg, "Font read error");
err = 5;
goto exit;
}
userfont[read] = 0;
if (strstr((char *)(userfont+read-8), "RPH_font") == NULL) {
sprintf(err_msg, "Font ID not found");
err = 6;
goto exit;
}
// Check size
int size = 0;
int numchar = 0;
int width = userfont[0];
int height = userfont[1];
uint8_t first = 255;
uint8_t last = 0;
//int offst = 0;
int pminwidth = 255;
int pmaxwidth = 0;
if (width != 0) {
// Fixed font
numchar = userfont[3];
first = userfont[2];
last = first + numchar - 1;
size = ((width * height * numchar) / 8) + 4;
}
else {
// Proportional font
size = 4; // point at first char data
uint8_t charCode;
int charwidth;
do {
charCode = userfont[size];
charwidth = userfont[size+2];
if (charCode != 0xFF) {
numchar++;
if (charwidth != 0) size += ((((charwidth * userfont[size+3])-1) / 8) + 7);
else size += 6;
if (info) {
if (charwidth > pmaxwidth) pmaxwidth = charwidth;
if (charwidth < pminwidth) pminwidth = charwidth;
if (charCode < first) first = charCode;
if (charCode > last) last = charCode;
}
}
else size++;
} while ((size < (read-8)) && (charCode != 0xFF));
}
if (size != (read-8)) {
sprintf(err_msg, "Font size error: found %d expected %d)", size, (read-8));
err = 7;
goto exit;
}
if (info) {
if (width != 0) {
printf("Fixed width font:\r\n size: %d width: %d height: %d characters: %d (%d~%d)\n",
size, width, height, numchar, first, last);
}
else {
printf("Proportional font:\r\n size: %d width: %d~%d height: %d characters: %d (%d~%d)\n",
size, pminwidth, pmaxwidth, height, numchar, first, last);
}
}
exit:
if (err) {
if (userfont) {
free(userfont);
userfont = NULL;
}
if (info) printf("Error: %d [%s]\r\n", err, err_msg);
}
return err;
}
//------------------------------------------------
int compile_font_file(char *fontfile, uint8_t dbg)
{
int err = 0;
char err_msg[128] = {'\0'};
char outfile[128] = {'\0'};
size_t len;
struct stat sb;
FILE *ffd = NULL;
FILE *ffd_out = NULL;
char *sourcebuf = NULL;
len = strlen(fontfile);
// check here that filename end with ".c".
if ((len < 3) || (len > 125) || (strcmp(fontfile + len - 2, ".c") != 0)) {
sprintf(err_msg, "not a .c file");
err = 1;
goto exit;
}
sprintf(outfile, "%s", fontfile);
sprintf(outfile+strlen(outfile)-1, "fon");
// Open the source file
if (stat(fontfile, &sb) != 0) {
sprintf(err_msg, "Error opening source file '%s'", fontfile);
err = 2;
goto exit;
}
// Open the file
ffd = fopen(fontfile, "rb");
if (!ffd) {
sprintf(err_msg, "Error opening source file '%s'", fontfile);
err = 3;
goto exit;
}
// Open the font file
ffd_out= fopen(outfile, "wb");
if (!ffd_out) {
sprintf(err_msg, "error opening destination file");
err = 4;
goto exit;
}
// Get file size
int fsize = sb.st_size;
if (fsize <= 0) {
sprintf(err_msg, "source file size error");
err = 5;
goto exit;
}
sourcebuf = malloc(fsize+4);
if (sourcebuf == NULL) {
sprintf(err_msg, "memory allocation error");
err = 6;
goto exit;
}
char *fbuf = sourcebuf;
int rdsize = fread(fbuf, 1, fsize, ffd);
fclose(ffd);
ffd = NULL;
if (rdsize != fsize) {
sprintf(err_msg, "error reading from source file");
err = 7;
goto exit;
}
*(fbuf+rdsize) = '\0';
fbuf = strchr(fbuf, '{'); // beginning of font data
char *fend = strstr(fbuf, "};"); // end of font data
if ((fbuf == NULL) || (fend == NULL) || ((fend-fbuf) < 22)) {
sprintf(err_msg, "wrong source file format");
err = 8;
goto exit;
}
fbuf++;
*fend = '\0';
char hexstr[5] = {'\0'};
int lastline = 0;
fbuf = strstr(fbuf, "0x");
int size = 0;
char *nextline;
char *numptr;
int bptr = 0;
while ((fbuf != NULL) && (fbuf < fend) && (lastline == 0)) {
nextline = strchr(fbuf, '\n'); // beginning of the next line
if (nextline == NULL) {
nextline = fend-1;
lastline++;
}
else nextline++;
while (fbuf < nextline) {
numptr = strstr(fbuf, "0x");
if ((numptr == NULL) || ((fbuf+4) > nextline)) numptr = strstr(fbuf, "0X");
if ((numptr != NULL) && ((numptr+4) <= nextline)) {
fbuf = numptr;
if (bptr >= 128) {
// buffer full, write to file
if (fwrite(outfile, 1, 128, ffd_out) != 128) goto error;
bptr = 0;
size += 128;
}
memcpy(hexstr, fbuf, 4);
hexstr[4] = 0;
outfile[bptr++] = (uint8_t)strtol(hexstr, NULL, 0);
fbuf += 4;
}
else fbuf = nextline;
}
fbuf = nextline;
}
if (bptr > 0) {
size += bptr;
if (fwrite(outfile, 1, bptr, ffd_out) != bptr) goto error;
}
// write font ID
sprintf(outfile, "RPH_font");
if (fwrite(outfile, 1, 8, ffd_out) != 8) goto error;
fclose(ffd_out);
ffd_out = NULL;
// === Test compiled font ===
sprintf(outfile, "%s", fontfile);
sprintf(outfile+strlen(outfile)-1, "fon");
uint8_t *uf = userfont; // save userfont pointer
userfont = NULL;
if (load_file_font(outfile, 1) != 0) {
sprintf(err_msg, "Error compiling file!");
err = 10;
}
else {
free(userfont);
sprintf(err_msg, "File compiled successfully.");
}
userfont = uf; // restore userfont
goto exit;
error:
sprintf(err_msg, "error writing to destination file");
err = 9;
exit:
if (sourcebuf) free(sourcebuf);
if (ffd) fclose(ffd);
if (ffd_out) fclose(ffd_out);
if (dbg) printf("%s\r\n", err_msg);
return err;
}
// -----------------------------------------------------------------------------------------
// Individual Proportional Font Character Format:
// -----------------------------------------------------------------------------------------
// Character Code
// yOffset (start Y of visible pixels)
// Width (width of the visible pixels)
// Height (height of the visible pixels)
// xOffset (start X of visible pixels)
// xDelta (the distance to move the cursor. Effective width of the character.)
// Data[n]
// -----------------------------------------------------------------------------------------
//---------------------------------------------------------------------------------------------
// Character drawing rectangle is (0, 0) (xDelta-1, tft_cfont.y_size-1)
// Character visible pixels rectangle is (xOffset, yOffset) (xOffset+Width-1, yOffset+Height-1)
//---------------------------------------------------------------------------------------------
//----------------------------------
void getFontCharacters(uint8_t *buf)
{
if (tft_cfont.bitmap == 2) {
//For 7 segment font only characters 0,1,2,3,4,5,6,7,8,9, . , - , : , / are available.
for (uint8_t n=0; n < 11; n++) {
buf[n] = n + 0x30;
}
buf[11] = '.';
buf[12] = '-';
buf[13] = '/';
buf[14] = '\0';
return;
}
if (tft_cfont.x_size > 0) {
for (uint8_t n=0; n < tft_cfont.numchars; n++) {
buf[n] = tft_cfont.offset + n;
}
buf[tft_cfont.numchars] = '\0';
return;
}
uint16_t tempPtr = 4; // point at first char data
uint8_t cc, cw, ch, n;
n = 0;
cc = tft_cfont.font[tempPtr++];
while (cc != 0xFF) {
tft_cfont.numchars++;
tempPtr++;
cw = tft_cfont.font[tempPtr++];
ch = tft_cfont.font[tempPtr++];
tempPtr++;
tempPtr++;
if (cw != 0) {
// packed bits
tempPtr += (((cw * ch)-1) / 8) + 1;
}
buf[n++] = cc;
cc = tft_cfont.font[tempPtr++];
}
buf[n] = '\0';
}
// Set max width & height of the proportional font
//-----------------------------
static void getMaxWidthHeight()
{
uint16_t tempPtr = 4; // point at first char data
uint8_t cc, cw, ch, cd, cy;
tft_cfont.numchars = 0;
tft_cfont.max_x_size = 0;
cc = tft_cfont.font[tempPtr++];
while (cc != 0xFF) {
tft_cfont.numchars++;
cy = tft_cfont.font[tempPtr++];
cw = tft_cfont.font[tempPtr++];
ch = tft_cfont.font[tempPtr++];
tempPtr++;
cd = tft_cfont.font[tempPtr++];
cy += ch;
if (cw > tft_cfont.max_x_size) tft_cfont.max_x_size = cw;
if (cd > tft_cfont.max_x_size) tft_cfont.max_x_size = cd;
if (ch > tft_cfont.y_size) tft_cfont.y_size = ch;
if (cy > tft_cfont.y_size) tft_cfont.y_size = cy;
if (cw != 0) {
// packed bits
tempPtr += (((cw * ch)-1) / 8) + 1;
}
cc = tft_cfont.font[tempPtr++];
}
tft_cfont.size = tempPtr;
}
// Return the Glyph data for an individual character in the proportional font
//------------------------------------
static uint8_t getCharPtr(uint8_t c) {
uint16_t tempPtr = 4; // point at first char data
do {
fontChar.charCode = tft_cfont.font[tempPtr++];
if (fontChar.charCode == 0xFF) return 0;
fontChar.adjYOffset = tft_cfont.font[tempPtr++];
fontChar.width = tft_cfont.font[tempPtr++];
fontChar.height = tft_cfont.font[tempPtr++];
fontChar.xOffset = tft_cfont.font[tempPtr++];
fontChar.xOffset = fontChar.xOffset < 0x80 ? fontChar.xOffset : -(0xFF - fontChar.xOffset);
fontChar.xDelta = tft_cfont.font[tempPtr++];
if (c != fontChar.charCode && fontChar.charCode != 0xFF) {
if (fontChar.width != 0) {
// packed bits
tempPtr += (((fontChar.width * fontChar.height)-1) / 8) + 1;
}
}
} while ((c != fontChar.charCode) && (fontChar.charCode != 0xFF));
fontChar.dataPtr = tempPtr;
if (c == fontChar.charCode) {
if (tft_font_forceFixed > 0) {
// fix width & offset for forced fixed width
fontChar.xDelta = tft_cfont.max_x_size;
fontChar.xOffset = (fontChar.xDelta - fontChar.width) / 2;
}
}
else return 0;
return 1;
}
/*
//-----------------------
static void _testFont() {
if (tft_cfont.x_size) {
printf("FONT TEST: fixed font\r\n");
return;
}
uint16_t tempPtr = 4; // point at first char data
uint8_t c = 0x20;
for (c=0x20; c <0xFF; c++) {
fontChar.charCode = tft_cfont.font[tempPtr++];
if (fontChar.charCode == 0xFF) break;
if (fontChar.charCode != c) {
printf("FONT TEST: last sequential char: %d, expected %d\r\n", fontChar.charCode, c);
break;
}
c = fontChar.charCode;
fontChar.adjYOffset = tft_cfont.font[tempPtr++];
fontChar.width = tft_cfont.font[tempPtr++];
fontChar.height = tft_cfont.font[tempPtr++];
fontChar.xOffset = tft_cfont.font[tempPtr++];
fontChar.xOffset = fontChar.xOffset < 0x80 ? fontChar.xOffset : -(0xFF - fontChar.xOffset);
fontChar.xDelta = tft_cfont.font[tempPtr++];
if (fontChar.charCode != 0xFF) {
if (fontChar.width != 0) {
// packed bits
tempPtr += (((fontChar.width * fontChar.height)-1) / 8) + 1;
}
}
}
printf("FONT TEST: W=%d H=%d last char: %d [%c]; length: %d\r\n", tft_cfont.max_x_size, tft_cfont.y_size, c, c, tempPtr);
}
*/
//===================================================
void TFT_setFont(uint8_t font, const char *font_file)
{
tft_cfont.font = NULL;
if (font == FONT_7SEG) {
tft_cfont.bitmap = 2;
tft_cfont.x_size = 24;
tft_cfont.y_size = 6;
tft_cfont.offset = 0;
tft_cfont.color = tft_fg;
}
else {
if (font == USER_FONT) {
if (load_file_font(font_file, 0) != 0) tft_cfont.font = tft_DefaultFont;
else tft_cfont.font = userfont;
}
else if (font == DEJAVU18_FONT) tft_cfont.font = tft_Dejavu18;
else if (font == DEJAVU24_FONT) tft_cfont.font = tft_Dejavu24;
else if (font == UBUNTU16_FONT) tft_cfont.font = tft_Ubuntu16;
else if (font == COMIC24_FONT) tft_cfont.font = tft_Comic24;
else if (font == MINYA24_FONT) tft_cfont.font = tft_minya24;
else if (font == TOONEY32_FONT) tft_cfont.font = tft_tooney32;
else if (font == SMALL_FONT) tft_cfont.font = tft_SmallFont;
else if (font == DEF_SMALL_FONT) tft_cfont.font = tft_def_small;
else tft_cfont.font = tft_DefaultFont;
tft_cfont.bitmap = 1;
tft_cfont.x_size = tft_cfont.font[0];
tft_cfont.y_size = tft_cfont.font[1];
if (tft_cfont.x_size > 0) {
tft_cfont.offset = tft_cfont.font[2];
tft_cfont.numchars = tft_cfont.font[3];
tft_cfont.size = tft_cfont.x_size * tft_cfont.y_size * tft_cfont.numchars;
}
else {
tft_cfont.offset = 4;
getMaxWidthHeight();
}
//_testFont();
}
}
// -----------------------------------------------------------------------------------------
// Individual Proportional Font Character Format:
// -----------------------------------------------------------------------------------------
// Character Code
// yOffset (start Y of visible pixels)
// Width (width of the visible pixels)
// Height (height of the visible pixels)
// xOffset (start X of visible pixels)
// xDelta (the distance to move the cursor. Effective width of the character.)
// Data[n]
// -----------------------------------------------------------------------------------------
//---------------------------------------------------------------------------------------------
// Character drawing rectangle is (0, 0) (xDelta-1, tft_cfont.y_size-1)
// Character visible pixels rectangle is (xOffset, yOffset) (xOffset+Width-1, yOffset+Height-1)
//---------------------------------------------------------------------------------------------
// print non-rotated proportional character
// character is already in fontChar
//----------------------------------------------
static int printProportionalChar(int x, int y) {
uint8_t ch = 0;
int i, j, char_width;
char_width = ((fontChar.width > fontChar.xDelta) ? fontChar.width : fontChar.xDelta);
if ((tft_font_buffered_char) && (!tft_font_transparent)) {
int len, bufPos;
// === buffer Glyph data for faster sending ===
len = char_width * tft_cfont.y_size;
color_t *color_line = heap_caps_malloc(len*3, MALLOC_CAP_DMA);
if (color_line) {
// fill with background color
for (int n = 0; n < len; n++) {
color_line[n] = tft_bg;
}
// set character pixels to foreground color
uint8_t mask = 0x80;
for (j=0; j < fontChar.height; j++) {
for (i=0; i < fontChar.width; i++) {
if (((i + (j*fontChar.width)) % 8) == 0) {
mask = 0x80;
ch = tft_cfont.font[fontChar.dataPtr++];
}
if ((ch & mask) != 0) {
// visible pixel
bufPos = ((j + fontChar.adjYOffset) * char_width) + (fontChar.xOffset + i); // bufY + bufX
color_line[bufPos] = tft_fg;
/*
bufY = (j + fontChar.adjYOffset) * char_width;
bufX = fontChar.xOffset + i;
if ((bufX < 0) || (bufX > char_width)) {
printf("[%c] X ERR: %d\r\n", fontChar.charCode, bufX);
}
bufPos = bufY + bufX;
if ((bufPos < len) && (bufPos > 0)) color_line[bufPos] = tft_fg;
else printf("[%c] ERR: %d > %d W=%d H=%d bufX=%d bufY=%d X=%d Y=%d\r\n",
fontChar.charCode, bufPos, len, char_width, tft_cfont.y_size, bufX, bufY, fontChar.xOffset + i, j + fontChar.adjYOffset);
*/
}
mask >>= 1;
}
}
// send to display in one transaction
disp_select();
send_data(x, y, x+char_width-1, y+tft_cfont.y_size-1, len, color_line);
disp_deselect();
free(color_line);
return char_width;
}
}
int cx, cy;
if (!tft_font_transparent) _fillRect(x, y, char_width+1, tft_cfont.y_size, tft_bg);
// draw Glyph
uint8_t mask = 0x80;
disp_select();
for (j=0; j < fontChar.height; j++) {
for (i=0; i < fontChar.width; i++) {
if (((i + (j*fontChar.width)) % 8) == 0) {
mask = 0x80;
ch = tft_cfont.font[fontChar.dataPtr++];
}
if ((ch & mask) !=0) {
cx = (uint16_t)(x+fontChar.xOffset+i);
cy = (uint16_t)(y+j+fontChar.adjYOffset);
_drawPixel(cx, cy, tft_fg, 0);
}
mask >>= 1;
}
}
disp_deselect();
return char_width;
}
// non-rotated fixed width character
//----------------------------------------------
static void printChar(uint8_t c, int x, int y) {
uint8_t i, j, ch, fz, mask;
uint16_t k, temp, cx, cy, len;
// fz = bytes per char row
fz = tft_cfont.x_size/8;
if (tft_cfont.x_size % 8) fz++;
// get character position in buffer
temp = ((c-tft_cfont.offset)*((fz)*tft_cfont.y_size))+4;
if ((tft_font_buffered_char) && (!tft_font_transparent)) {
// === buffer Glyph data for faster sending ===
len = tft_cfont.x_size * tft_cfont.y_size;
color_t *color_line = heap_caps_malloc(len*3, MALLOC_CAP_DMA);
if (color_line) {
// fill with background color
for (int n = 0; n < len; n++) {
color_line[n] = tft_bg;
}
// set character pixels to foreground color
for (j=0; j<tft_cfont.y_size; j++) {
for (k=0; k < fz; k++) {
ch = tft_cfont.font[temp+k];
mask=0x80;
for (i=0; i<8; i++) {
if ((ch & mask) !=0) color_line[(j*tft_cfont.x_size) + (i+(k*8))] = tft_fg;
mask >>= 1;
}
}
temp += (fz);
}
// send to display in one transaction
disp_select();
send_data(x, y, x+tft_cfont.x_size-1, y+tft_cfont.y_size-1, len, color_line);
disp_deselect();
free(color_line);
return;
}
}
if (!tft_font_transparent) _fillRect(x, y, tft_cfont.x_size, tft_cfont.y_size, tft_bg);
disp_select();
for (j=0; j<tft_cfont.y_size; j++) {
for (k=0; k < fz; k++) {
ch = tft_cfont.font[temp+k];
mask=0x80;
for (i=0; i<8; i++) {
if ((ch & mask) !=0) {
cx = (uint16_t)(x+i+(k*8));
cy = (uint16_t)(y+j);
_drawPixel(cx, cy, tft_fg, 0);
}
mask >>= 1;
}
}
temp += (fz);
}
disp_deselect();
}
// print rotated proportional character
// character is already in fontChar
//---------------------------------------------------
static int rotatePropChar(int x, int y, int offset) {
uint8_t ch = 0;
double radian = tft_font_rotate * DEG_TO_RAD;
float cos_radian = cos(radian);
float sin_radian = sin(radian);
uint8_t mask = 0x80;
disp_select();
for (int j=0; j < fontChar.height; j++) {
for (int i=0; i < fontChar.width; i++) {
if (((i + (j*fontChar.width)) % 8) == 0) {
mask = 0x80;
ch = tft_cfont.font[fontChar.dataPtr++];
}
int newX = (int)(x + (((offset + i) * cos_radian) - ((j+fontChar.adjYOffset)*sin_radian)));
int newY = (int)(y + (((j+fontChar.adjYOffset) * cos_radian) + ((offset + i) * sin_radian)));
if ((ch & mask) != 0) _drawPixel(newX,newY,tft_fg, 0);
else if (!tft_font_transparent) _drawPixel(newX,newY,tft_bg, 0);
mask >>= 1;
}
}
disp_deselect();
return fontChar.xDelta+1;
}
// rotated fixed width character
//--------------------------------------------------------
static void rotateChar(uint8_t c, int x, int y, int pos) {
uint8_t i,j,ch,fz,mask;
uint16_t temp;
int newx,newy;
double radian = tft_font_rotate*0.0175;
float cos_radian = cos(radian);
float sin_radian = sin(radian);
int zz;
if( tft_cfont.x_size < 8 ) fz = tft_cfont.x_size;
else fz = tft_cfont.x_size/8;
temp=((c-tft_cfont.offset)*((fz)*tft_cfont.y_size))+4;
disp_select();
for (j=0; j<tft_cfont.y_size; j++) {
for (zz=0; zz<(fz); zz++) {
ch = tft_cfont.font[temp+zz];
mask = 0x80;
for (i=0; i<8; i++) {
newx=(int)(x+(((i+(zz*8)+(pos*tft_cfont.x_size))*cos_radian)-((j)*sin_radian)));
newy=(int)(y+(((j)*cos_radian)+((i+(zz*8)+(pos*tft_cfont.x_size))*sin_radian)));
if ((ch & mask) != 0) _drawPixel(newx,newy,tft_fg, 0);
else if (!tft_font_transparent) _drawPixel(newx,newy,tft_bg, 0);
mask >>= 1;
}
}
temp+=(fz);
}
disp_deselect();
// calculate x,y for the next char
tft_x = (int)(x + ((pos+1) * tft_cfont.x_size * cos_radian));
tft_y = (int)(y + ((pos+1) * tft_cfont.x_size * sin_radian));
}
//----------------------
static int _7seg_width()
{
return (2 * (2 * tft_cfont.y_size + 1)) + tft_cfont.x_size;
}
//-----------------------
static int _7seg_height()
{
return (3 * (2 * tft_cfont.y_size + 1)) + (2 * tft_cfont.x_size);
}
// Returns the string width in pixels.
// Useful for positions strings on the screen.
//===============================
int TFT_getStringWidth(char* str)
{
int strWidth = 0;
if (tft_cfont.bitmap == 2) strWidth = ((_7seg_width()+2) * strlen(str)) - 2; // 7-segment font
else if (tft_cfont.x_size != 0) strWidth = strlen(str) * tft_cfont.x_size; // fixed width font
else {
// calculate the width of the string of proportional characters
char* tempStrptr = str;
while (*tempStrptr != 0) {
if (getCharPtr(*tempStrptr++)) {
strWidth += (((fontChar.width > fontChar.xDelta) ? fontChar.width : fontChar.xDelta) + 1);
}
}
strWidth--;
}
return strWidth;
}
//===============================================
void TFT_clearStringRect(int x, int y, char *str)
{
int w = TFT_getStringWidth(str);
int h = TFT_getfontheight();
TFT_fillRect(x+tft_dispWin.x1, y+tft_dispWin.y1, w, h, tft_bg);
}
//==============================================================================
/**
* bit-encoded bar position of all digits' bcd segments
*
* 6
* +-----+
* 3 | . | 2
* +--5--+
* 1 | . | 0
* +--.--+
* 4
*/
static const uint16_t font_bcd[] = {
0x200, // 0010 0000 0000 // -
0x080, // 0000 1000 0000 // .
0x06C, // 0100 0110 1100 // /, degree
0x05f, // 0000 0101 1111, // 0
0x005, // 0000 0000 0101, // 1
0x076, // 0000 0111 0110, // 2
0x075, // 0000 0111 0101, // 3
0x02d, // 0000 0010 1101, // 4
0x079, // 0000 0111 1001, // 5
0x07b, // 0000 0111 1011, // 6
0x045, // 0000 0100 0101, // 7
0x07f, // 0000 0111 1111, // 8
0x07d, // 0000 0111 1101 // 9
0x900 // 1001 0000 0000 // :
};
//-----------------------------------------------------------------------------------------------
static void barVert(int16_t x, int16_t y, int16_t w, int16_t l, color_t color, color_t outline) {
_fillTriangle(x+1, y+2*w, x+w, y+w+1, x+2*w-1, y+2*w, color);
_fillTriangle(x+1, y+2*w+l+1, x+w, y+3*w+l, x+2*w-1, y+2*w+l+1, color);
_fillRect(x, y+2*w+1, 2*w+1, l, color);
if (tft_cfont.offset) {
_drawTriangle(x+1, y+2*w, x+w, y+w+1, x+2*w-1, y+2*w, outline);
_drawTriangle(x+1, y+2*w+l+1, x+w, y+3*w+l, x+2*w-1, y+2*w+l+1, outline);
_drawRect(x, y+2*w+1, 2*w+1, l, outline);
}
}
//----------------------------------------------------------------------------------------------
static void barHor(int16_t x, int16_t y, int16_t w, int16_t l, color_t color, color_t outline) {
_fillTriangle(x+2*w, y+2*w-1, x+w+1, y+w, x+2*w, y+1, color);
_fillTriangle(x+2*w+l+1, y+2*w-1, x+3*w+l, y+w, x+2*w+l+1, y+1, color);
_fillRect(x+2*w+1, y, l, 2*w+1, color);
if (tft_cfont.offset) {
_drawTriangle(x+2*w, y+2*w-1, x+w+1, y+w, x+2*w, y+1, outline);
_drawTriangle(x+2*w+l+1, y+2*w-1, x+3*w+l, y+w, x+2*w+l+1, y+1, outline);
_drawRect(x+2*w+1, y, l, 2*w+1, outline);
}
}
//--------------------------------------------------------------------------------------------
static void _draw7seg(int16_t x, int16_t y, int8_t num, int16_t w, int16_t l, color_t color) {
/* TODO: clipping */
if (num < 0x2D || num > 0x3A) return;
int16_t c = font_bcd[num-0x2D];
int16_t d = 2*w+l+1;
// === Clear unused segments ===
if (!(c & 0x001)) barVert(x+d, y+d, w, l, tft_bg, tft_bg);
if (!(c & 0x002)) barVert(x, y+d, w, l, tft_bg, tft_bg);
if (!(c & 0x004)) barVert(x+d, y, w, l, tft_bg, tft_bg);
if (!(c & 0x008)) barVert(x, y, w, l, tft_bg, tft_bg);
if (!(c & 0x010)) barHor(x, y+2*d, w, l, tft_bg, tft_bg);
if (!(c & 0x020)) barHor(x, y+d, w, l, tft_bg, tft_bg);
if (!(c & 0x040)) barHor(x, y, w, l, tft_bg, tft_bg);
if (!(c & 0x080)) {
// low point
_fillRect(x+(d/2), y+2*d, 2*w+1, 2*w+1, tft_bg);
if (tft_cfont.offset) _drawRect(x+(d/2), y+2*d, 2*w+1, 2*w+1, tft_bg);
}
if (!(c & 0x100)) {
// down middle point
_fillRect(x+(d/2), y+d+2*w+1, 2*w+1, l/2, tft_bg);
if (tft_cfont.offset) _drawRect(x+(d/2), y+d+2*w+1, 2*w+1, l/2, tft_bg);
}
if (!(c & 0x800)) {
// up middle point
_fillRect(x+(d/2), y+(2*w)+1+(l/2), 2*w+1, l/2, tft_bg);
if (tft_cfont.offset) _drawRect(x+(d/2), y+(2*w)+1+(l/2), 2*w+1, l/2, tft_bg);
}
if (!(c & 0x200)) {
// middle, minus
_fillRect(x+2*w+1, y+d, l, 2*w+1, tft_bg);
if (tft_cfont.offset) _drawRect(x+2*w+1, y+d, l, 2*w+1, tft_bg);
}
// === Draw used segments ===
if (c & 0x001) barVert(x+d, y+d, w, l, color, tft_cfont.color); // down right
if (c & 0x002) barVert(x, y+d, w, l, color, tft_cfont.color); // down left
if (c & 0x004) barVert(x+d, y, w, l, color, tft_cfont.color); // up right
if (c & 0x008) barVert(x, y, w, l, color, tft_cfont.color); // up left
if (c & 0x010) barHor(x, y+2*d, w, l, color, tft_cfont.color); // down
if (c & 0x020) barHor(x, y+d, w, l, color, tft_cfont.color); // middle
if (c & 0x040) barHor(x, y, w, l, color, tft_cfont.color); // up
if (c & 0x080) {
// low point
_fillRect(x+(d/2), y+2*d, 2*w+1, 2*w+1, color);
if (tft_cfont.offset) _drawRect(x+(d/2), y+2*d, 2*w+1, 2*w+1, tft_cfont.color);
}
if (c & 0x100) {
// down middle point
_fillRect(x+(d/2), y+d+2*w+1, 2*w+1, l/2, color);
if (tft_cfont.offset) _drawRect(x+(d/2), y+d+2*w+1, 2*w+1, l/2, tft_cfont.color);
}
if (c & 0x800) {
// up middle point
_fillRect(x+(d/2), y+(2*w)+1+(l/2), 2*w+1, l/2, color);
if (tft_cfont.offset) _drawRect(x+(d/2), y+(2*w)+1+(l/2), 2*w+1, l/2, tft_cfont.color);
}
if (c & 0x200) {
// middle, minus
_fillRect(x+2*w+1, y+d, l, 2*w+1, color);
if (tft_cfont.offset) _drawRect(x+2*w+1, y+d, l, 2*w+1, tft_cfont.color);
}
}
//==============================================================================
//======================================
void TFT_print(char *st, int x, int y) {
int stl, i, tmpw, tmph, fh;
uint8_t ch;
if (tft_cfont.bitmap == 0) return; // wrong font selected
// ** Rotated strings cannot be aligned
if ((tft_font_rotate != 0) && ((x <= CENTER) || (y <= CENTER))) return;
if ((x < LASTX) || (tft_font_rotate == 0)) TFT_OFFSET = 0;
if ((x >= LASTX) && (x < LASTY)) x = tft_x + (x-LASTX);
else if (x > CENTER) x += tft_dispWin.x1;
if (y >= LASTY) y = tft_y + (y-LASTY);
else if (y > CENTER) y += tft_dispWin.y1;
// ** Get number of characters in string to print
stl = strlen(st);
// ** Calculate CENTER, RIGHT or BOTTOM position
tmpw = TFT_getStringWidth(st); // string width in pixels
fh = tft_cfont.y_size; // font height
if ((tft_cfont.x_size != 0) && (tft_cfont.bitmap == 2)) {
// 7-segment font
fh = (3 * (2 * tft_cfont.y_size + 1)) + (2 * tft_cfont.x_size); // 7-seg character height
}
if (x == RIGHT) x = tft_dispWin.x2 - tmpw + tft_dispWin.x1;
else if (x == CENTER) x = (((tft_dispWin.x2 - tft_dispWin.x1 + 1) - tmpw) / 2) + tft_dispWin.x1;
if (y == BOTTOM) y = tft_dispWin.y2 - fh + tft_dispWin.y1;
else if (y==CENTER) y = (((tft_dispWin.y2 - tft_dispWin.y1 + 1) - (fh/2)) / 2) + tft_dispWin.y1;
if (x < tft_dispWin.x1) x = tft_dispWin.x1;
if (y < tft_dispWin.y1) y = tft_dispWin.y1;
if ((x > tft_dispWin.x2) || (y > tft_dispWin.y2)) return;
tft_x = x;
tft_y = y;
// ** Adjust y position
tmph = tft_cfont.y_size; // font height
// for non-proportional fonts, char width is the same for all chars
tmpw = tft_cfont.x_size;
if (tft_cfont.x_size != 0) {
if (tft_cfont.bitmap == 2) { // 7-segment font
tmpw = _7seg_width(); // character width
tmph = _7seg_height(); // character height
}
}
else TFT_OFFSET = 0; // fixed font; offset not needed
if ((tft_y + tmph - 1) > tft_dispWin.y2) return;
int offset = TFT_OFFSET;
for (i=0; i<stl; i++) {
ch = st[i]; // get string character
if (ch == 0x0D) { // === '\r', erase to eol ====
if ((!tft_font_transparent) && (tft_font_rotate==0)) _fillRect(tft_x, tft_y, tft_dispWin.x2+1-tft_x, tmph, tft_bg);
}
else if (ch == 0x0A) { // ==== '\n', new line ====
if (tft_cfont.bitmap == 1) {
tft_y += tmph + tft_font_line_space;
if (tft_y > (tft_dispWin.y2-tmph)) break;
tft_x = tft_dispWin.x1;
}
}
else { // ==== other characters ====
if (tft_cfont.x_size == 0) {
// for proportional font get character data to 'fontChar'
if (getCharPtr(ch)) tmpw = fontChar.xDelta;
else continue;
}
// check if character can be displayed in the current line
if ((tft_x+tmpw) > (tft_dispWin.x2)) {
if (tft_text_wrap == 0) break;
tft_y += tmph + tft_font_line_space;
if (tft_y > (tft_dispWin.y2-tmph)) break;
tft_x = tft_dispWin.x1;
}
// Let's print the character
if (tft_cfont.x_size == 0) {
// == proportional font
if (tft_font_rotate == 0) tft_x += printProportionalChar(tft_x, tft_y) + 1;
else {
// rotated proportional font
offset += rotatePropChar(x, y, offset);
TFT_OFFSET = offset;
}
}
else {
if (tft_cfont.bitmap == 1) {
// == fixed font
if ((ch < tft_cfont.offset) || ((ch-tft_cfont.offset) > tft_cfont.numchars)) ch = tft_cfont.offset;
if (tft_font_rotate == 0) {
printChar(ch, tft_x, tft_y);
tft_x += tmpw;
}
else rotateChar(ch, x, y, i);
}
else if (tft_cfont.bitmap == 2) {
// == 7-segment font ==
_draw7seg(tft_x, tft_y, ch, tft_cfont.y_size, tft_cfont.x_size, tft_fg);
tft_x += (tmpw + 2);
}
}
}
}
}
// ================ Service functions ==========================================
// Change the screen rotation.
// Input: m new rotation value (0 to 3)
//=================================
void TFT_setRotation(uint8_t rot) {
if (rot > 3) {
uint8_t madctl = (rot & 0xF8); // for testing, manually set MADCTL register
if (disp_select() == ESP_OK) {
disp_spi_transfer_cmd_data(TFT_MADCTL, &madctl, 1);
disp_deselect();
}
}
else {
tft_orientation = rot;
_tft_setRotation(rot);
}
tft_dispWin.x1 = TFT_STATIC_X_OFFSET;
tft_dispWin.y1 = TFT_STATIC_Y_OFFSET;
tft_dispWin.x2 = tft_width + TFT_STATIC_X_OFFSET -1;
tft_dispWin.y2 = tft_height + TFT_STATIC_Y_OFFSET -1;
TFT_fillScreen(tft_bg);
}
// Send the command to invert all of the colors.
// Input: i 0 to disable inversion; non-zero to enable inversion
//==========================================
void TFT_invertDisplay(const uint8_t mode) {
if (disp_select() == ESP_OK) {
if ( mode == INVERT_ON ) disp_spi_transfer_cmd(TFT_INVONN);
else disp_spi_transfer_cmd(TFT_INVOFF);
disp_deselect();
}
}
// Select gamma curve
// Input: gamma = 0~3
//==================================
void TFT_setGammaCurve(uint8_t gm) {
uint8_t gamma_curve = (uint8_t)1 << (gm & (uint8_t)0x03);
if (disp_select() == ESP_OK) {
disp_spi_transfer_cmd_data(TFT_CMD_GAMMASET, &gamma_curve, 1);
disp_deselect();
}
}
//===========================================================
color_t HSBtoRGB(float _hue, float _sat, float _brightness) {
float red = 0.0;
float green = 0.0;
float blue = 0.0;
if (_sat == 0.0) {
red = _brightness;
green = _brightness;
blue = _brightness;
} else {
if (_hue == 360.0) {
_hue = 0;
}
int slice = (int)(_hue / 60.0);
float hue_frac = (_hue / 60.0) - slice;
float aa = _brightness * (1.0 - _sat);
float bb = _brightness * (1.0 - _sat * hue_frac);
float cc = _brightness * (1.0 - _sat * (1.0 - hue_frac));
switch(slice) {
case 0:
red = _brightness;
green = cc;
blue = aa;
break;
case 1:
red = bb;
green = _brightness;
blue = aa;
break;
case 2:
red = aa;
green = _brightness;
blue = cc;
break;
case 3:
red = aa;
green = bb;
blue = _brightness;
break;
case 4:
red = cc;
green = aa;
blue = _brightness;
break;
case 5:
red = _brightness;
green = aa;
blue = bb;
break;
default:
red = 0.0;
green = 0.0;
blue = 0.0;
break;
}
}
color_t color;
color.r = ((uint8_t)(red * 255.0)) & 0xFC;
color.g = ((uint8_t)(green * 255.0)) & 0xFC;
color.b = ((uint8_t)(blue * 255.0)) & 0xFC;
return color;
}
//=====================================================================
void TFT_setclipwin(uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2)
{
tft_dispWin.x1 = x1 + TFT_STATIC_X_OFFSET;
tft_dispWin.y1 = y1 + TFT_STATIC_Y_OFFSET;
tft_dispWin.x2 = x2 + TFT_STATIC_X_OFFSET;
tft_dispWin.y2 = y2 + TFT_STATIC_Y_OFFSET;
if (tft_dispWin.x2 >= tft_width + TFT_STATIC_X_OFFSET) tft_dispWin.x2 = tft_width + TFT_STATIC_X_OFFSET -1;
if (tft_dispWin.y2 >= tft_height + TFT_STATIC_Y_OFFSET) tft_dispWin.y2 = tft_height + TFT_STATIC_Y_OFFSET -1;
if (tft_dispWin.x1 > tft_dispWin.x2) tft_dispWin.x1 = tft_dispWin.x2;
if (tft_dispWin.y1 > tft_dispWin.y2) tft_dispWin.y1 = tft_dispWin.y2;
}
//=====================
void TFT_resetclipwin()
{
tft_dispWin.x2 = tft_width + TFT_STATIC_X_OFFSET -1;
tft_dispWin.y2 = tft_height + TFT_STATIC_Y_OFFSET -1;
tft_dispWin.x1 = TFT_STATIC_X_OFFSET;
tft_dispWin.y1 = TFT_STATIC_Y_OFFSET;
}
//==========================================================================
void set_7seg_font_atrib(uint8_t l, uint8_t w, int outline, color_t color) {
if (tft_cfont.bitmap != 2) return;
if (l < 6) l = 6;
if (l > 40) l = 40;
if (w < 1) w = 1;
if (w > (l/2)) w = l/2;
if (w > 12) w = 12;
tft_cfont.x_size = l;
tft_cfont.y_size = w;
tft_cfont.offset = outline;
tft_cfont.color = color;
}
//==========================================
int TFT_getfontsize(int *width, int* height)
{
if (tft_cfont.bitmap == 1) {
if (tft_cfont.x_size != 0) *width = tft_cfont.x_size; // fixed width font
else *width = tft_cfont.max_x_size; // proportional font
*height = tft_cfont.y_size;
}
else if (tft_cfont.bitmap == 2) {
// 7-segment font
*width = _7seg_width();
*height = _7seg_height();
}
else {
*width = 0;
*height = 0;
return 0;
}
return 1;
}
//=====================
int TFT_getfontheight()
{
if (tft_cfont.bitmap == 1) return tft_cfont.y_size; // Bitmap font
else if (tft_cfont.bitmap == 2) return _7seg_height(); // 7-segment font
return 0;
}
//====================
void TFT_saveClipWin()
{
dispWinTemp.x1 = tft_dispWin.x1;
dispWinTemp.y1 = tft_dispWin.y1;
dispWinTemp.x2 = tft_dispWin.x2;
dispWinTemp.y2 = tft_dispWin.y2;
}
//=======================
void TFT_restoreClipWin()
{
tft_dispWin.x1 = dispWinTemp.x1;
tft_dispWin.y1 = dispWinTemp.y1;
tft_dispWin.x2 = dispWinTemp.x2;
tft_dispWin.y2 = dispWinTemp.y2;
}
// ================ JPG SUPPORT ================================================
// User defined device identifier
typedef struct {
FILE *fhndl; // File handler for input function
int x; // image top left point X position
int y; // image top left point Y position
uint8_t *membuff; // memory buffer containing the image
uint32_t bufsize; // size of the memory buffer
uint32_t bufptr; // memory buffer current position
color_t *linbuf[2]; // memory buffer used for display output
uint8_t linbuf_idx;
} JPGIODEV;
// User defined call-back function to input JPEG data from file
//---------------------
static UINT tjd_input (
JDEC* jd, // Decompression object
BYTE* buff, // Pointer to the read buffer (NULL:skip)
UINT nd // Number of bytes to read/skip from input stream
)
{
int rb = 0;
// Device identifier for the session (5th argument of jd_prepare function)
JPGIODEV *dev = (JPGIODEV*)jd->device;
if (buff) { // Read nd bytes from the input strem
rb = fread(buff, 1, nd, dev->fhndl);
return rb; // Returns actual number of bytes read
}
else { // Remove nd bytes from the input stream
if (fseek(dev->fhndl, nd, SEEK_CUR) >= 0) return nd;
else return 0;
}
}
// User defined call-back function to input JPEG data from memory buffer
//-------------------------
static UINT tjd_buf_input (
JDEC* jd, // Decompression object
BYTE* buff, // Pointer to the read buffer (NULL:skip)
UINT nd // Number of bytes to read/skip from input stream
)
{
// Device identifier for the session (5th argument of jd_prepare function)
JPGIODEV *dev = (JPGIODEV*)jd->device;
if (!dev->membuff) return 0;
if (dev->bufptr >= (dev->bufsize + 2)) return 0; // end of stream
if ((dev->bufptr + nd) > (dev->bufsize + 2)) nd = (dev->bufsize + 2) - dev->bufptr;
if (buff) { // Read nd bytes from the input strem
memcpy(buff, dev->membuff + dev->bufptr, nd);
dev->bufptr += nd;
return nd; // Returns number of bytes read
}
else { // Remove nd bytes from the input stream
dev->bufptr += nd;
return nd;
}
}
// User defined call-back function to output RGB bitmap to display device
//----------------------
static UINT tjd_output (
JDEC* jd, // Decompression object of current session
void* bitmap, // Bitmap data to be output
JRECT* rect // Rectangular region to output
)
{
// Device identifier for the session (5th argument of jd_prepare function)
JPGIODEV *dev = (JPGIODEV*)jd->device;
// ** Put the rectangular into the display device **
int x;
int y;
int dleft, dtop, dright, dbottom;
BYTE *src = (BYTE*)bitmap;
int left = rect->left + dev->x;
int top = rect->top + dev->y;
int right = rect->right + dev->x;
int bottom = rect->bottom + dev->y;
if ((left > tft_dispWin.x2) || (top > tft_dispWin.y2)) return 1; // out of screen area, return
if ((right < tft_dispWin.x1) || (bottom < tft_dispWin.y1)) return 1;// out of screen area, return
if (left < tft_dispWin.x1) dleft = tft_dispWin.x1;
else dleft = left;
if (top < tft_dispWin.y1) dtop = tft_dispWin.y1;
else dtop = top;
if (right > tft_dispWin.x2) dright = tft_dispWin.x2;
else dright = right;
if (bottom > tft_dispWin.y2) dbottom = tft_dispWin.y2;
else dbottom = bottom;
if ((dleft > tft_dispWin.x2) || (dtop > tft_dispWin.y2)) return 1; // out of screen area, return
if ((dright < tft_dispWin.x1) || (dbottom < tft_dispWin.y1)) return 1; // out of screen area, return
uint32_t len = ((dright-dleft+1) * (dbottom-dtop+1)); // calculate length of data
if ((len > 0) && (len <= JPG_IMAGE_LINE_BUF_SIZE)) {
uint8_t *dest = (uint8_t *)(dev->linbuf[dev->linbuf_idx]);
for (y = top; y <= bottom; y++) {
for (x = left; x <= right; x++) {
// Clip to display area
if ((x >= dleft) && (y >= dtop) && (x <= dright) && (y <= dbottom)) {
*dest++ = (*src++) & 0xFC;
*dest++ = (*src++) & 0xFC;
*dest++ = (*src++) & 0xFC;
}
else src += 3; // skip
}
}
wait_trans_finish(1);
send_data(dleft, dtop, dright, dbottom, len, dev->linbuf[dev->linbuf_idx]);
dev->linbuf_idx = ((dev->linbuf_idx + 1) & 1);
}
else {
wait_trans_finish(1);
printf("Data size error: %d jpg: (%d,%d,%d,%d) disp: (%d,%d,%d,%d)\r\n", len, left,top,right,bottom, dleft,dtop,dright,dbottom);
return 0; // stop decompression
}
return 1; // Continue to decompression
}
// tft.jpgimage(X, Y, scale, file_name, buf, size]
// X & Y can be < 0 !
//==================================================================================
void TFT_jpg_image(int x, int y, uint8_t scale, char *fname, uint8_t *buf, int size)
{
JPGIODEV dev;
struct stat sb;
char *work = NULL; // Pointer to the working buffer (must be 4-byte aligned)
UINT sz_work = 3800; // Size of the working buffer (must be power of 2)
JDEC jd; // Decompression object (70 bytes)
JRESULT rc;
dev.linbuf[0] = NULL;
dev.linbuf[1] = NULL;
dev.linbuf_idx = 0;
dev.fhndl = NULL;
if (fname == NULL) {
// image from buffer
dev.membuff = buf;
dev.bufsize = size;
dev.bufptr = 0;
}
else {
// image from file
dev.membuff = NULL;
dev.bufsize = 0;
dev.bufptr = 0;
if (stat(fname, &sb) != 0) {
if (tft_image_debug) printf("File error: %ss\r\n", strerror(errno));
goto exit;
}
dev.fhndl = fopen(fname, "r");
if (!dev.fhndl) {
if (tft_image_debug) printf("Error opening file: %s\r\n", strerror(errno));
goto exit;
}
}
if (scale > 3) scale = 3;
work = malloc(sz_work);
if (work) {
if (dev.membuff) rc = jd_prepare(&jd, tjd_buf_input, (void *)work, sz_work, &dev);
else rc = jd_prepare(&jd, tjd_input, (void *)work, sz_work, &dev);
if (rc == JDR_OK) {
if (x == CENTER) x = ((tft_dispWin.x2 - tft_dispWin.x1 + 1 - (int)(jd.width >> scale)) / 2) + tft_dispWin.x1;
else if (x == RIGHT) x = tft_dispWin.x2 + 1 - (int)(jd.width >> scale);
if (y == CENTER) y = ((tft_dispWin.y2 - tft_dispWin.y1 + 1 - (int)(jd.height >> scale)) / 2) + tft_dispWin.y1;
else if (y == BOTTOM) y = tft_dispWin.y2 + 1 - (int)(jd.height >> scale);
if (x < ((tft_dispWin.x2-1) * -1)) x = (tft_dispWin.x2-1) * -1;
if (y < ((tft_dispWin.y2-1)) * -1) y = (tft_dispWin.y2-1) * -1;
if (x > (tft_dispWin.x2-1)) x = tft_dispWin.x2 - 1;
if (y > (tft_dispWin.y2-1)) y = tft_dispWin.y2-1;
dev.x = x;
dev.y = y;
dev.linbuf[0] = heap_caps_malloc(JPG_IMAGE_LINE_BUF_SIZE*3, MALLOC_CAP_DMA);
if (dev.linbuf[0] == NULL) {
if (tft_image_debug) printf("Error allocating line buffer #0\r\n");
goto exit;
}
dev.linbuf[1] = heap_caps_malloc(JPG_IMAGE_LINE_BUF_SIZE*3, MALLOC_CAP_DMA);
if (dev.linbuf[1] == NULL) {
if (tft_image_debug) printf("Error allocating line buffer #1\r\n");
goto exit;
}
// Start to decode the JPEG file
disp_select();
rc = jd_decomp(&jd, tjd_output, scale);
disp_deselect();
if (rc != JDR_OK) {
if (tft_image_debug) printf("jpg decompression error %d\r\n", rc);
}
if (tft_image_debug) printf("Jpg size: %dx%d, position; %d,%d, scale: %d, bytes used: %d\r\n", jd.width, jd.height, x, y, scale, jd.sz_pool);
}
else {
if (tft_image_debug) printf("jpg prepare error %d\r\n", rc);
}
}
else {
if (tft_image_debug) printf("work buffer allocation error\r\n");
}
exit:
if (work) free(work); // free work buffer
if (dev.linbuf[0]) free(dev.linbuf[0]);
if (dev.linbuf[1]) free(dev.linbuf[1]);
if (dev.fhndl) fclose(dev.fhndl); // close input file
}
//====================================================================================
int TFT_bmp_image(int x, int y, uint8_t scale, char *fname, uint8_t *imgbuf, int size)
{
FILE *fhndl = NULL;
struct stat sb;
int i, err=0;
int img_xsize, img_ysize, img_xstart, img_xlen, img_ystart, img_ylen;
int img_pos, img_pix_pos, scan_lines, rd_len;
uint8_t tmpc;
uint16_t wtemp;
uint32_t temp;
int disp_xstart, disp_xend, disp_ystart, disp_yend;
uint8_t buf[56];
char err_buf[64];
uint8_t *line_buf[2] = {NULL,NULL};
uint8_t lb_idx = 0;
uint8_t *scale_buf = NULL;
uint8_t scale_pix;
uint16_t co[3] = {0,0,0}; // RGB sum
uint8_t npix;
if (scale > 7) scale = 7;
scale_pix = scale+1; // scale factor ( 1~8 )
if (fname) {
// * File name is given, reading image from file
if (stat(fname, &sb) != 0) {
sprintf(err_buf, "opening file");
err = -1;
goto exit;
}
size = sb.st_size;
fhndl = fopen(fname, "r");
if (!fhndl) {
sprintf(err_buf, "opening file");
err = -2;
goto exit;
}
i = fread(buf, 1, 54, fhndl); // read header
}
else {
// * Reading image from buffer
if ((imgbuf) && (size > 54)) {
memcpy(buf, imgbuf, 54);
i = 54;
}
else i = 0;
}
sprintf(err_buf, "reading header");
if (i != 54) {err = -3; goto exit;}
// ** Check image header and get image properties
if ((buf[0] != 'B') || (buf[1] != 'M')) {err=-4; goto exit;} // accept only images with 'BM' id
memcpy(&temp, buf+2, 4); // file size
if (temp != size) {err=-5; goto exit;}
memcpy(&img_pos, buf+10, 4); // start of pixel data
memcpy(&temp, buf+14, 4); // BMP header size
if (temp != 40) {err=-6; goto exit;}
memcpy(&wtemp, buf+26, 2); // the number of color planes
if (wtemp != 1) {err=-7; goto exit;}
memcpy(&wtemp, buf+28, 2); // the number of bits per pixel
if (wtemp != 24) {err=-8; goto exit;}
memcpy(&temp, buf+30, 4); // the compression method being used
if (temp != 0) {err=-9; goto exit;}
memcpy(&img_xsize, buf+18, 4); // the bitmap width in pixels
memcpy(&img_ysize, buf+22, 4); // the bitmap height in pixels
// * scale image dimensions
img_xlen = img_xsize / scale_pix; // image display horizontal size
img_ylen = img_ysize / scale_pix; // image display vertical size
if (x == CENTER) x = ((tft_dispWin.x2 - tft_dispWin.x1 + 1 - img_xlen) / 2) + tft_dispWin.x1;
else if (x == RIGHT) x = tft_dispWin.x2 + 1 - img_xlen;
if (y == CENTER) y = ((tft_dispWin.y2 - tft_dispWin.y1 + 1 - img_ylen) / 2) + tft_dispWin.y1;
else if (y == BOTTOM) y = tft_dispWin.y2 + 1 - img_ylen;
if ((x < ((tft_dispWin.x2 + 1) * -1)) || (x > (tft_dispWin.x2 + 1)) || (y < ((tft_dispWin.y2 + 1) * -1)) || (y > (tft_dispWin.y2 + 1))) {
sprintf(err_buf, "out of display area (%d,%d", x, y);
err = -10;
goto exit;
}
// ** set display and image areas
if (x < tft_dispWin.x1) {
disp_xstart = tft_dispWin.x1;
img_xstart = -x; // image pixel line X offset
img_xlen += x;
}
else {
disp_xstart = x;
img_xstart = 0;
}
if (y < tft_dispWin.y1) {
disp_ystart = tft_dispWin.y1;
img_ystart = -y; // image pixel line Y offset
img_ylen += y;
}
else {
disp_ystart = y;
img_ystart = 0;
}
disp_xend = disp_xstart + img_xlen - 1;
disp_yend = disp_ystart + img_ylen - 1;
if (disp_xend > tft_dispWin.x2) {
disp_xend = tft_dispWin.x2;
img_xlen = disp_xend - disp_xstart + 1;
}
if (disp_yend > tft_dispWin.y2) {
disp_yend = tft_dispWin.y2;
img_ylen = disp_yend - disp_ystart + 1;
}
if ((img_xlen < 8) || (img_ylen < 8) || (img_xstart >= (img_xsize-2)) || ((img_ysize - img_ystart) < 2)) {
sprintf(err_buf, "image too small");
err = -11;
goto exit;
}
// ** Allocate memory for 2 lines of image pixels
line_buf[0] = heap_caps_malloc(img_xsize*3, MALLOC_CAP_DMA);
if (line_buf[0] == NULL) {
sprintf(err_buf, "allocating line buffer #1");
err=-12;
goto exit;
}
line_buf[1] = heap_caps_malloc(img_xsize*3, MALLOC_CAP_DMA);
if (line_buf[1] == NULL) {
sprintf(err_buf, "allocating line buffer #2");
err=-13;
goto exit;
}
if (scale) {
// Allocate memory for scale buffer
rd_len = img_xlen * 3 * scale_pix;
scale_buf = malloc(rd_len*scale_pix);
if (scale_buf == NULL) {
sprintf(err_buf, "allocating scale buffer");
err=-14;
goto exit;
}
}
else rd_len = img_xlen * 3;
// ** ***************************************************** **
// ** BMP images are stored in file from LAST to FIRST line **
// ** ***************************************************** **
/* Used variables:
img_xsize horizontal image size in pixels
img_ysize number of image lines
img_xlen image display horizontal scaled size in pixels
img_ylen image display vertical scaled size in pixels
img_xstart first pixel in line to be displayed
img_ystart first image line to be displayed
img_xlen number of pixels in image line to be displayed, starting with 'img_xstart'
img_ylen number of lines in image to be displayed, starting with 'img_ystart'
rd_len length of color data which are read from image line in bytes
*/
// Set position in image to the first color data (beginning of the LAST line)
img_pos += (img_ystart * (img_xsize*3));
if (fhndl) {
if (fseek(fhndl, img_pos, SEEK_SET) != 0) {
sprintf(err_buf, "file seek at %d", img_pos);
err = -15;
goto exit;
}
}
if (tft_image_debug) printf("BMP: image size: (%d,%d) scale: %d disp size: (%d,%d) img xofs: %d img yofs: %d at: %d,%d; line buf: 2* %d scale buf: %d\r\n",
img_xsize, img_ysize, scale_pix, img_xlen, img_ylen, img_xstart, img_ystart, disp_xstart, disp_ystart, img_xsize*3, ((scale) ? (rd_len*scale_pix) : 0));
// * Select the display
disp_select();
while ((disp_yend >= disp_ystart) && ((img_pos + (img_xsize*3)) <= size)) {
if (img_pos > size) {
sprintf(err_buf, "EOF reached: %d > %d", img_pos, size);
err = -16;
goto exit1;
}
if (scale == 0) {
// Read the line of color data into color buffer
if (fhndl) {
i = fread(line_buf[lb_idx], 1, img_xsize*3, fhndl); // read line from file
if (i != (img_xsize*3)) {
sprintf(err_buf, "file read at %d (%d<>%d)", img_pos, i, img_xsize*3);
err = -16;
goto exit1;
}
}
else memcpy(line_buf[lb_idx], imgbuf+img_pos, img_xsize*3);
if (img_xstart > 0) memmove(line_buf[lb_idx], line_buf[lb_idx]+(img_xstart*3), rd_len);
// Convert colors BGR-888 (BMP) -> RGB-888 (DISPLAY) ===
for (i=0; i < rd_len; i += 3) {
tmpc = line_buf[lb_idx][i+2] & 0xfc; // save R
line_buf[lb_idx][i+2] = line_buf[lb_idx][i] & 0xfc; // B -> R
line_buf[lb_idx][i] = tmpc; // R -> B
line_buf[lb_idx][i+1] &= 0xfc; // G
}
img_pos += (img_xsize*3);
}
else {
// scale image, read 'scale_pix' lines and find the average color
for (scan_lines=0; scan_lines<scale_pix; scan_lines++) {
if (img_pos > size) break;
if (fhndl) {
i = fread(line_buf[lb_idx], 1, img_xsize*3, fhndl); // read line from file
if (i != (img_xsize*3)) {
sprintf(err_buf, "file read at %d (%d<>%d)", img_pos, i, img_xsize*3);
err = -17;
goto exit1;
}
}
else memcpy(line_buf[lb_idx], imgbuf+img_pos, img_xsize*3);
img_pos += (img_xsize*3);
// copy only data which are displayed to scale buffer
memcpy(scale_buf + (rd_len * scan_lines), line_buf[lb_idx]+img_xstart, rd_len);
}
// Populate display line buffer
for (int n=0;n<(img_xlen*3);n += 3) {
memset(co, 0, sizeof(co)); // initialize color sum
npix = 0; // initialize number of pixels in scale rectangle
// sum all pixels in scale rectangle
for (int sc_line=0; sc_line<scan_lines; sc_line++) {
// Get colors position in scale buffer
img_pix_pos = (rd_len * sc_line) + (n * scale_pix);
for (int sc_col=0; sc_col<scale_pix; sc_col++) {
co[0] += scale_buf[img_pix_pos];
co[1] += scale_buf[img_pix_pos + 1];
co[2] += scale_buf[img_pix_pos + 2];
npix++;
}
}
// Place the average in display buffer, convert BGR-888 (BMP) -> RGB-888 (DISPLAY)
line_buf[lb_idx][n+2] = (uint8_t)(co[0] / npix); // B
line_buf[lb_idx][n+1] = (uint8_t)(co[1] / npix); // G
line_buf[lb_idx][n] = (uint8_t)(co[2] / npix); // R
}
}
wait_trans_finish(1);
send_data(disp_xstart, disp_yend, disp_xend, disp_yend, img_xlen, (color_t *)line_buf[lb_idx]);
lb_idx = (lb_idx + 1) & 1; // change buffer
disp_yend--;
}
err = 0;
exit1:
disp_deselect();
exit:
if (scale_buf) free(scale_buf);
if (line_buf[0]) free(line_buf[0]);
if (line_buf[1]) free(line_buf[1]);
if (fhndl) fclose(fhndl);
if ((err) && (tft_image_debug)) printf("Error: %d [%s]\r\n", err, err_buf);
return err;
}
// ============= Touch panel functions =========================================
#if USE_TOUCH == TOUCH_TYPE_XPT2046
//-------------------------------------------------------
static int tp_get_data_xpt2046(uint8_t type, int samples)
{
if (tft_ts_spi == NULL) return 0;
int n, result, val = 0;
uint32_t i = 0;
uint32_t vbuf[18];
uint32_t minval, maxval, dif;
if (samples < 3) samples = 1;
if (samples > 18) samples = 18;
// one dummy read
result = touch_get_data(type);
// read data
while (i < 10) {
minval = 5000;
maxval = 0;
// get values
for (n=0;n<samples;n++) {
result = touch_get_data(type);
if (result < 0) break;
vbuf[n] = result;
if (result < minval) minval = result;
if (result > maxval) maxval = result;
}
if (result < 0) break;
dif = maxval - minval;
if (dif < 40) break;
i++;
}
if (result < 0) return -1;
if (samples > 2) {
// remove one min value
for (n = 0; n < samples; n++) {
if (vbuf[n] == minval) {
vbuf[n] = 5000;
break;
}
}
// remove one max value
for (n = 0; n < samples; n++) {
if (vbuf[n] == maxval) {
vbuf[n] = 5000;
break;
}
}
for (n = 0; n < samples; n++) {
if (vbuf[n] < 5000) val += vbuf[n];
}
val /= (samples-2);
}
else val = vbuf[0];
return val;
}
//-----------------------------------------------
static int TFT_read_touch_xpt2046(int *x, int* y)
{
int res = 0, result = -1;
if (spi_lobo_device_select(tft_ts_spi, 0) != ESP_OK) return 0;
result = tp_get_data_xpt2046(0xB0, 3); // Z; pressure; touch detect
if (result <= 50) goto exit;
// touch panel pressed
result = tp_get_data_xpt2046(0xD0, 10);
if (result < 0) goto exit;
*x = result;
result = tp_get_data_xpt2046(0x90, 10);
if (result < 0) goto exit;
*y = result;
res = 1;
exit:
spi_lobo_device_deselect(tft_ts_spi);
return res;
}
#endif
//=============================================
int TFT_read_touch(int *x, int* y, uint8_t raw)
{
*x = 0;
*y = 0;
if (tft_ts_spi == NULL) return 0;
#if USE_TOUCH == TOUCH_TYPE_NONE
return 0;
#else
int result = -1;
int X=0, Y=0;
#if USE_TOUCH == TOUCH_TYPE_XPT2046
uint32_t tft_tp_calx = TP_CALX_XPT2046;
uint32_t tft_tp_caly = TP_CALY_XPT2046;
result = TFT_read_touch_xpt2046(&X, &Y);
if (result == 0) return 0;
#elif USE_TOUCH == TOUCH_TYPE_STMPE610
uint32_t tft_tp_calx = TP_CALX_STMPE610;
uint32_t tft_tp_caly = TP_CALY_STMPE610;
uint16_t Xx, Yy, Z=0;
result = stmpe610_get_touch(&Xx, &Yy, &Z);
if (result == 0) return 0;
X = Xx;
Y = Yy;
#else
return 0;
#endif
if (raw) {
*x = X;
*y = Y;
return 1;
}
// Calibrate the result
int tmp;
int xleft = (tft_tp_calx >> 16) & 0x3FFF;
int xright = tft_tp_calx & 0x3FFF;
int ytop = (tft_tp_caly >> 16) & 0x3FFF;
int ybottom = tft_tp_caly & 0x3FFF;
if (((xright - xleft) <= 0) || ((ybottom - ytop) <= 0)) return 0;
#if USE_TOUCH == TOUCH_TYPE_XPT2046
int width = tft_width;
int height = tft_height;
X = ((X - xleft) * height) / (xright - xleft);
Y = ((Y - ytop) * width) / (ybottom - ytop);
if (X < 0) X = 0;
if (X > height-1) X = height-1;
if (Y < 0) Y = 0;
if (Y > width-1) Y = width-1;
switch (tft_orientation) {
case PORTRAIT:
tmp = X;
X = width - Y - 1;
Y = tmp;
break;
case PORTRAIT_FLIP:
tmp = X;
X = Y;
Y = height - tmp - 1;
break;
case LANDSCAPE_FLIP:
X = height - X - 1;
Y = width - Y - 1;
break;
}
#elif USE_TOUCH == TOUCH_TYPE_STMPE610
int width = tft_width;
int height = tft_height;
if (tft_width > tft_height) {
width = tft_height;
height = tft_width;
}
X = ((X - xleft) * width) / (xright - xleft);
Y = ((Y - ytop) * height) / (ybottom - ytop);
if (X < 0) X = 0;
if (X > width-1) X = width-1;
if (Y < 0) Y = 0;
if (Y > height-1) Y = height-1;
switch (tft_orientation) {
case PORTRAIT_FLIP:
X = width - X - 1;
Y = height - Y - 1;
break;
case LANDSCAPE:
tmp = X;
X = Y;
Y = width - tmp -1;
break;
case LANDSCAPE_FLIP:
tmp = X;
X = height - Y -1;
Y = tmp;
break;
}
#endif
*x = X;
*y = Y;
return 1;
#endif
}
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