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#include <u.h>
#include <libc.h>
#include <draw.h>
#include <event.h>
Image *back; // Background image for drawing
int gridsize = 16; // Size of each grid cell
int gridwidth = 10; // Number of grid columns
int gridheight = 10; // Number of grid rows
Mouse mouse;
void drawgrid(void) {
int x, y;
for (x = 0; x <= gridwidth; x++) {
line(back, Pt(x * gridsize, 0), Pt(x * gridsize, gridheight * gridsize), Endsquare, Endsquare, 0, display->black, ZP);
}
for (y = 0; y <= gridheight; y++) {
line(back, Pt(0, y * gridsize), Pt(gridwidth * gridsize, y * gridsize), Endsquare, Endsquare, 0, display->black, ZP);
}
}
void fillcell(int x, int y, ulong color) {
Rectangle r = Rect(x * gridsize, y * gridsize, (x + 1) * gridsize, (y + 1) * gridsize);
draw(back, r, display->black, nil, ZP);
flushimage(display, 1);
}
void main(void) {
if (initdraw(0, 0, "Pixel Art Tool") < 0)
sysfatal("initdraw failed: %r");
back = screen;
drawgrid(); // Draw the initial grid
flushimage(display, 1);
for (;;) {
mouse = emouse(); // Fetch mouse event
if (mouse.buttons & 1) { // Left mouse button clicked
int cellx = mouse.xy.x / gridsize;
int celly = mouse.xy.y / gridsize;
fillcell(cellx, celly, display->black->chan); // Fill the clicked cell
}
if (ekbd() == 'q') { // Check for 'q' key press to exit
exits(0);
}
}
}
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