Starting UI

nasu.c

@@ -26,7 +26,7 @@ typedef struct Brush {
 
 int theme[] = {0x000000, 0x72DEC2, 0xFFFFFF, 0x444444, 0x111111};
 int WIDTH = 8 * HOR + PAD * 2;
-int HEIGHT = 8 * VER + PAD * 2;
+int HEIGHT = 8 * (VER + 2) + PAD * 2;
 int FPS = 30, GUIDES = 1, ZOOM = 2;
 
 unsigned char chrbuf[SZ];
@@ -37,6 +37,11 @@ Uint32 *pixels;
 
 Brush brush;
 
+/* Icons */
+
+unsigned char icon0[] = {0x38, 0x7c, 0xfe, 0xfe, 0xfe, 0x7c, 0x38, 0x00};
+unsigned char icon1[] = {0x38, 0x44, 0x82, 0x82, 0x82, 0x44, 0x38, 0x00};
+
 /* helpers */
 
 int
@@ -222,6 +227,13 @@ clear(Uint32 *dst)
 			dst[i * WIDTH + j] = theme[0];
 }
 
+void
+pixel(Uint32 *dst, int x, int y, int color)
+{
+	if(x >= 0 && x < WIDTH - 8 && y >= 0 && y < HEIGHT - 8)
+		dst[(y + PAD) * WIDTH + (x + PAD)] = color;
+}
+
 void
 drawchr(Uint32 *dst, int x, int y, int id)
 {
@@ -233,17 +245,37 @@ drawchr(Uint32 *dst, int x, int y, int id)
 			int ch1 = chrbuf[offset + v];
 			int ch2 = chrbuf[offset + v + 8];
 			int clr = ((ch1 >> h) & 0x1) + (((ch2 >> h) & 0x1) << 1);
-			int key = (py + PAD) * WIDTH + (px + PAD);
 			int guides = GUIDES && !clr && (x + y) % 2;
-			dst[key] = theme[guides ? 4 : clr];
+			pixel(dst, px, py, theme[guides ? 4 : clr]);
+		}
+}
+
+void
+drawicon(Uint32 *dst, int x, int y, unsigned char *icon, int color)
+{
+	int v, h;
+	for(v = 0; v < 8; v++)
+		for(h = 0; h < 8; h++) {
+			int c = theme[(icon[v] >> h) & 0x1];
+			pixel(dst, x + h, y + v, c ? color : theme[0]);
 		}
 }
 
+void
+drawui(Uint32 *dst)
+{
+	int bottom = VER * 8 + 8;
+	drawicon(dst, 0, bottom, brush.color == 1 ? icon1 : icon0, theme[1]);
+	drawicon(dst, 8, bottom, brush.color == 2 ? icon1 : icon0, theme[2]);
+	drawicon(dst, 16, bottom, brush.color == 3 ? icon1 : icon0, theme[3]);
+}
+
 void
 redraw(Uint32 *dst)
 {
 	int x, y;
 	clear(dst);
+	drawui(dst);
 	for(y = 0; y < VER; ++y)
 		for(x = 0; x < HOR; ++x)
 			drawchr(dst, x, y, x + y * HOR);
@@ -275,6 +307,7 @@ void
 setcolor(Brush *b, int c)
 {
 	b->color = c;
+	redraw(pixels);
 	printf("Set Color %d\n", b->color);
 }
 
@@ -282,6 +315,7 @@ void
 setmode(Brush *b, int m)
 {
 	b->mode = m;
+	redraw(pixels);
 	printf("Set Mode %d\n", b->mode);
 }
 
@@ -291,6 +325,7 @@ modsize(Brush *b, int mod)
 	int res = b->size + mod;
 	if(res > 0 && res < 30)
 		b->size = res;
+	redraw(pixels);
 	printf("Set Size %d\n", b->size);
 }
 
@@ -385,6 +420,16 @@ loadtheme(FILE *f)
 	fclose(f);
 }
 
+void
+selectoption(int option)
+{
+	switch(option) {
+	case 0: setcolor(&brush, 1); break;
+	case 1: setcolor(&brush, 2); break;
+	case 2: setcolor(&brush, 3); break;
+	}
+}
+
 void
 quit(void)
 {
@@ -425,6 +470,8 @@ domouse(SDL_Event *event, Brush *b)
 		}
 		b->px = (event->motion.x - (PAD * ZOOM)) / ZOOM;
 		b->py = (event->motion.y - (PAD * ZOOM)) / ZOOM;
+		if(b->py >= VER * 8)
+			selectoption(abs(b->px / 8));
 		if(b->down) {
 			putchr(b->px - 1, b->py, b->erase ? 0 : b->color);
 			redraw(pixels);