linux-st7735/spilcd_gfx.c

#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include "spilcd_gfx.h"

void lcd_drawPixel(lcd_t* lcd, uint8 x, uint8 y, uint8 r, uint8 g, uint8 b)
{
	if(lcd_setWindow(lcd, x, y, x, y)) return;
	lcd_pushPixel(lcd, r, g, b);
}

void lcd_fillRect(lcd_t* lcd, uint8 x, uint8 y, uint8 w, uint8 h,
					uint8 r, uint8 g, uint8 b)
{
	if((w == 0) || (h == 0)) return;
	if((x+w-1) >= lcd->width)  w = lcd->width  - x;
	if((y+h-1) >= lcd->height) h = lcd->height - y;
	
	if(lcd_setWindow(lcd, x, y, x+w-1, y+h-1)) return;

#define BUFFER_PIXELS 64
	int wh = w*h;
	uint8 buffer[BUFFER_PIXELS * sizeof(uint8) * 3];
	for (int p = 0; p < wh; p += BUFFER_PIXELS) {
		for(int pb = 0; pb < BUFFER_PIXELS; pb++) {
			buffer[pb * 3 + 0] = r;
			buffer[pb * 3 + 1] = g;
			buffer[pb * 3 + 2] = b;
		}
		int rem = wh - p;
		lcd_pushPixels(lcd, buffer, ((rem < BUFFER_PIXELS) ? rem : BUFFER_PIXELS));
	}
}

void lcd_fillScreen(lcd_t* lcd, uint8 r, uint8 g, uint8 b)
{
	lcd_fillRect(lcd, 0, 0,
		lcd->width, lcd->height,
		r, g, b);
}