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Added transparency support

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This commit is contained in:
Dejvino 2020-08-02 19:38:10 +00:00
parent dd2fb5d7e6
commit e7b5cfdf7e
3 changed files with 32 additions and 12 deletions
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9
spilcd.h
View File

@ -62,6 +62,15 @@ uint8 lcd_setWindow(lcd_t* lcd, uint8 x1, uint8 y1, uint8 x2, uint8 y2);
*/ */
void lcd_pushPixel(lcd_t* lcd, uint8 r, uint8 g, uint8 b); void lcd_pushPixel(lcd_t* lcd, uint8 r, uint8 g, uint8 b);
/*
* Push a 'transparent' pixel into the previously set drawing area.
* Requires buffering to be enabled.
*
* Parameters:
* lcd - display to use
*/
void lcd_pushPixelSkip(lcd_t* lcd);
/* /*
* Push an array of pixels into the previously set drawing area. * Push an array of pixels into the previously set drawing area.
* Significantly faster than pushing pixels individually. * Significantly faster than pushing pixels individually.

9
spilcd_font.c
View File

@ -5,7 +5,7 @@
#include "spilcd_font.h" #include "spilcd_font.h"
#include "font8x8_basic.h" #include "font8x8_basic.h"
static void lcd_pushChar(lcd_t* lcd, char c) static void lcd_pushChar(lcd_t* lcd, char c, uint8 r, uint8 g, uint8 b)
{ {
char* bitmap = font8x8_basic[(unsigned int) c]; char* bitmap = font8x8_basic[(unsigned int) c];
int x,y; int x,y;
@ -14,9 +14,10 @@ static void lcd_pushChar(lcd_t* lcd, char c)
for (y=0; y < 8; y++) { for (y=0; y < 8; y++) {
set = bitmap[x] & 1 << y; set = bitmap[x] & 1 << y;
if (set) { if (set) {
lcd_pushPixel(lcd, 200, 0, 0); lcd_pushPixel(lcd, r, g, b);
} else { } else {
lcd_pushPixel(lcd, 0, 0, 0); //lcd_pushPixel(lcd, 0, 0, 0);
lcd_pushPixelSkip(lcd);
} }
} }
} }
@ -25,7 +26,7 @@ static void lcd_pushChar(lcd_t* lcd, char c)
void lcd_drawChar(lcd_t* lcd, uint8 x, uint8 y, char c, uint8 r, uint8 g, uint8 b) void lcd_drawChar(lcd_t* lcd, uint8 x, uint8 y, char c, uint8 r, uint8 g, uint8 b)
{ {
lcd_setWindow(lcd, x, y, x+8 - 1, y+8 - 1); lcd_setWindow(lcd, x, y, x+8 - 1, y+8 - 1);
lcd_pushChar(lcd, c); lcd_pushChar(lcd, c, r, g, b);
} }
void lcd_drawText(lcd_t* lcd, uint8 x, uint8 y, char* text, uint8 r, uint8 g, uint8 b) void lcd_drawText(lcd_t* lcd, uint8 x, uint8 y, char* text, uint8 r, uint8 g, uint8 b)

24
st7735.c
View File

@ -36,6 +36,18 @@ static uint8 screen_window_y2;
static uint8 screen_cursor_x; static uint8 screen_cursor_x;
static uint8 screen_cursor_y; static uint8 screen_cursor_y;
void advance_screen_cursor()
{
screen_cursor_x++;
if (screen_cursor_x > screen_window_x2) {
screen_cursor_x = screen_window_x1;
screen_cursor_y++;
if (screen_cursor_y > screen_window_y2) {
screen_cursor_y = screen_window_y1;
}
}
}
static lcd_t *activeDisplay; static lcd_t *activeDisplay;
/* /*
@ -298,14 +310,12 @@ void lcd_pushPixel(lcd_t* lcd, uint8 r, uint8 g, uint8 b)
screen_buffer[i * 3 + 1] = g; screen_buffer[i * 3 + 1] = g;
screen_buffer[i * 3 + 2] = b; screen_buffer[i * 3 + 2] = b;
screen_cursor_x++; advance_screen_cursor();
if (screen_cursor_x > screen_window_x2) {
screen_cursor_x = screen_window_x1;
screen_cursor_y++;
if (screen_cursor_y > screen_window_y2) {
screen_cursor_y = screen_window_y1;
}
} }
void lcd_pushPixelSkip(lcd_t* lcd)
{
advance_screen_cursor();
} }
void lcd_pushPixels(lcd_t* lcd, uint8* pixels, size_t count) void lcd_pushPixels(lcd_t* lcd, uint8* pixels, size_t count)