void glcd_tiny_draw_char(uint8_t x, uint8_t line, char c)
{
uint8_t i;
/* Only works for fonts < 8 bits in height */
if (font_current.height >= 8) {
return;
}
if (c < font_current.start_char || c > font_current.end_char) {
c = '.';
}
if ( line >= GLCD_LCD_HEIGHT / (font_current.height + 1) ) {
return;
}
if ( (x+font_current.width) >= GLCD_LCD_WIDTH ) {
return;
}
glcd_update_bbox(x, line*(font_current.height + 1), x+font_current.width, line*(font_current.height + 1) + (font_current.height + 1));
for ( i = 0; i < font_current.width; i++ ) {
glcd_buffer_selected[x + (line * GLCD_LCD_WIDTH)] = *( font_current.font_table + ((c - font_current.start_char) * (font_current.width)) + i );
x++;
}
}
void glcd_draw_rect_thick(uint8_t x, uint8_t y, uint8_t w, uint8_t h, uint8_t tx, uint8_t ty, uint8_t color)
{
int16_t i, t;
if (tx == 0) {
tx = 1;
}
if (ty == 0) {
ty = 1;
}
for (i=x; i<x+w; i++) {
/* Top and bottom sides */
for (t=0; t<(ty); t++) {
glcd_set_pixel(i, y+t, color);
glcd_set_pixel(i, y+h-1-t, color);
}
}
for (i=y; i<y+h; i++) {
/* Left and right sides */
for (t=0; t<(tx); t++) {
glcd_set_pixel(x+t, i, color);
glcd_set_pixel(x+w-1-t, i, color);
}
}
glcd_update_bbox(x, y, x+w-1, y+h-1);
}
void glcd_tiny_draw_char_xy(uint8_t x, uint8_t y, char c)
{
uint8_t i;
uint8_t xvar, yvar;
uint8_t dat;
/* Only works for fonts < 8 bits in height */
/* Check all important bounds requirements are okay */
if ( (y >= GLCD_LCD_HEIGHT) || ((x+font_current.width) >= GLCD_LCD_WIDTH) || (font_current.height >= 8) || font_current.table_type != STANG) {
return;
}
if (c < font_current.start_char || c > font_current.end_char) {
c = '.';
}
xvar = x;
for ( i = 0; i < font_current.width; i++ ) {
dat = *( font_current.font_table + ((c - font_current.start_char) * (font_current.width)) + i );
for (yvar = 0; yvar < font_current.height; yvar++) {
glcd_set_pixel(xvar,y+yvar, (dat & (1<<yvar) ? 1 : 0) );
}
xvar++;
}
glcd_update_bbox(x, y, x+font_current.width,y+font_current.height);
}
void glcd_invert_pixel(uint8_t x, uint8_t y) {
if ((x >= GLCD_LCD_WIDTH) || (y >= GLCD_LCD_HEIGHT)) {
return;
}
glcd_update_bbox(x,y,x,y);
glcd_buffer[x+ (y/8)*GLCD_LCD_WIDTH] ^= ( 1 << (y%8));
}
void glcd_fill_rect(uint8_t x, uint8_t y, uint8_t w, uint8_t h, uint8_t color)
{
int16_t i;
for (i=x; i<x+w; i++) {
int16_t j;
for (j=y; j<y+h; j++) {
glcd_set_pixel(i, j, color);
}
}
glcd_update_bbox(x, y, x+w-1, y+h-1);
}
void glcd_draw_rect(uint8_t x, uint8_t y, uint8_t w, uint8_t h, uint8_t color)
{
int16_t i;
for (i=x; i<x+w; i++) {
glcd_set_pixel(i, y, color);
glcd_set_pixel(i, y+h-1, color);
}
for (i=y; i<y+h; i++) {
glcd_set_pixel(x, i, color);
glcd_set_pixel(x+w-1, i, color);
}
glcd_update_bbox(x, y, x+w-1, y+h-1);
}
void glcd_scroll_line(void)
{
uint8_t y;
uint8_t number_of_rows = GLCD_LCD_HEIGHT / 8;
for (y=0; y<number_of_rows; y++) {
if (y < (number_of_rows - 1)) {
/* All lines except the last */
memcpy(glcd_buffer_selected + y*GLCD_LCD_WIDTH, glcd_buffer_selected + y*GLCD_LCD_WIDTH + GLCD_LCD_WIDTH, GLCD_LCD_WIDTH);
} else {
/* Last line, clear it */
memset(glcd_buffer_selected + (number_of_rows - 1)*GLCD_LCD_WIDTH, 0x00, GLCD_LCD_WIDTH);
}
}
glcd_update_bbox(0,0,GLCD_LCD_WIDTH - 1,GLCD_LCD_HEIGHT - 1);
}
/* Based on PCD8544 library by Limor Fried */
void glcd_set_pixel(uint8_t x, uint8_t y, uint8_t color) {
if (x > (GLCD_LCD_WIDTH-1) || y > (GLCD_LCD_HEIGHT-1)) {
/* don't do anything if x/y is outside bounds of display size */
return;
}
if (color) {
/* Set black */
glcd_buffer[x+ (y/8)*GLCD_LCD_WIDTH] |= ( 1 << (y%8));
} else {
/* Set white */
glcd_buffer[x+ (y/8)*GLCD_LCD_WIDTH] &= ~ (1 << (y%8));
}
glcd_update_bbox(x,y,x,y);
}
/* Bresenham's algorithm - based on PCD8544 library Limor Fried */
void glcd_draw_line(uint8_t x0, uint8_t y0, uint8_t x1, uint8_t y1, uint8_t color) {
uint8_t steep = abs(y1 - y0) > abs(x1 - x0);
uint8_t dx, dy;
int8_t err;
int8_t ystep;
if (steep) {
swap(x0, y0);
swap(x1, y1);
}
if (x0 > x1) {
swap(x0, x1);
swap(y0, y1);
}
glcd_update_bbox( x0, y0, x1, y1 );
dx = x1 - x0;
dy = abs(y1 - y0);
err = dx / 2;
if (y0 < y1) {
ystep = 1;
} else {
ystep = -1;
}
for (; x0<=x1; x0++) {
if (steep) {
glcd_set_pixel(y0, x0, color);
} else {
glcd_set_pixel(x0, y0, color);
}
err -= dy;
if (err < 0) {
y0 += ystep;
err += dx;
}
}
}
void glcd_draw_circle(uint8_t x0, uint8_t y0, uint8_t r, uint8_t color)
{
int8_t f = 1 - r;
int8_t ddF_x = 1;
int8_t ddF_y = -2 * r;
int8_t x = 0;
int8_t y = r;
glcd_update_bbox(x0-r, y0-r, x0+r, y0+r);
glcd_set_pixel(x0, y0+r, color);
glcd_set_pixel(x0, y0-r, color);
glcd_set_pixel(x0+r, y0, color);
glcd_set_pixel(x0-r, y0, color);
while (x<y) {
if (f >= 0) {
y--;
ddF_y += 2;
f += ddF_y;
}
x++;
ddF_x += 2;
f += ddF_x;
glcd_set_pixel(x0 + x, y0 + y, color);
glcd_set_pixel(x0 - x, y0 + y, color);
glcd_set_pixel(x0 + x, y0 - y, color);
glcd_set_pixel(x0 - x, y0 - y, color);
glcd_set_pixel(x0 + y, y0 + x, color);
glcd_set_pixel(x0 - y, y0 + x, color);
glcd_set_pixel(x0 + y, y0 - x, color);
glcd_set_pixel(x0 - y, y0 - x, color);
}
}
void glcd_fill_circle(uint8_t x0, uint8_t y0, uint8_t r, uint8_t color)
{
int8_t f = 1 - r;
int8_t ddF_x = 1;
int8_t ddF_y = -2 * r;
int8_t x = 0;
int8_t y = r;
int16_t i;
glcd_update_bbox(x0-r, y0-r, x0+r, y0+r);
for (i=y0-r; i<=y0+r; i++) {
glcd_set_pixel(x0, i, color);
}
while (x < y) {
if (f >= 0) {
y--;
ddF_y += 2;
f += ddF_y;
}
x++;
ddF_x += 2;
f += ddF_x;
for (i=y0-y; i<=y0+y; i++) {
glcd_set_pixel(x0+x, i, color);
glcd_set_pixel(x0-x, i, color);
}
for (i=y0-x; i<=y0+x; i++) {
glcd_set_pixel(x0+y, i, color);
glcd_set_pixel(x0-y, i, color);
}
}
}
void glcd_clear_buffer(void) {
memset(glcd_buffer_selected, 0x00, GLCD_LCD_WIDTH * GLCD_LCD_HEIGHT / 8);
glcd_update_bbox(0,0,GLCD_LCD_WIDTH - 1,GLCD_LCD_HEIGHT - 1);
}
