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paint: add 'c' and 'f'

--- a/sys/man/1/paint

+++ b/sys/man/1/paint

@@ -23,7 +23,14 @@

 in the pop-up box and hit enter.

 .TP

 .B c

-Clear the screen. Any unsaved work will be lost.

+Change the drawing color to

+.I n,

+where

+0 = black, 1 = white, 2 = red, 3 = green, 4 = blue and 5 = yellow.

+Type the corresponding number into the pop-up box and hit enter.

+.TP

+.B f

+Fill the screen with the current color. Any unsaved work will be lost.

 .TP

 .B o

 Open a bitmap image file for editing. Type a path and filename into the

--- a/sys/src/cmd/paint.c

+++ b/sys/src/cmd/paint.c

@@ -3,6 +3,10 @@

 #include <draw.h>

 #include <event.h>

+#define NCOLORS 6

+

+Image	*colors[NCOLORS];

+

 void

 eresized(int)

 {

@@ -18,17 +22,15 @@

 	if((fd = open(name, OREAD)) < 0)

 		return -1;

-	else {

-		if((b = readimage(display, fd, 0)) == nil){

-			close(fd);

-			return -1;

-		} else {

-			draw(screen, screen->r, b, 0, b->r.min);

-			flushimage(display, 1);

-			freeimage(b);

-		}

+	if((b = readimage(display, fd, 0)) == nil){

 		close(fd);

+		return -1;

 	}

+	draw(screen, screen->r, b, 0, b->r.min);

+	flushimage(display, 1);

+	freeimage(b);

+	close(fd);

+	return 0;

 }

 int

@@ -40,6 +42,7 @@

 		return -1;

 	writeimage(fd, screen, 0);

 	close(fd);

+	return 0;

 }

 void

@@ -47,12 +50,15 @@

 {

 	Event e;

 	Point last;

-	int haslast;

-	int brushsize = 1;

+	int b = 1;

+	int c = 0;

+	int cn, f;

+	int haslast = 0;

 	char brush[128];

+	char color[NCOLORS];

 	char file[128];

+	char fill[NCOLORS];

-	haslast = 0;

 	if(initdraw(0, 0, "paint") < 0){

 		fprint(2, "paint: initdraw failed: %r\n");

 		exits("initdraw");

@@ -61,6 +67,13 @@

 	draw(screen, screen->r, display->white, 0, ZP);

 	flushimage(display, 1);

+	colors[0] = display->black;

+	colors[1] = display->white;

+	colors[2] = allocimage(display, Rect(0,0,1,1), CMAP8, 1, DRed);

+	colors[3] = allocimage(display, Rect(0,0,1,1), CMAP8, 1, DGreen);

+	colors[4] = allocimage(display, Rect(0,0,1,1), CMAP8, 1, DBlue);

+	colors[5] = allocimage(display, Rect(0,0,1,1), CMAP8, 1, DYellow);

+

 	ARGBEGIN{

 	default:

 		goto Usage;

@@ -84,28 +97,35 @@

 		case Emouse:

 			if(e.mouse.buttons & 1){

 				if(haslast)

-					line(screen, last, e.mouse.xy, Enddisc, Enddisc, brushsize, display->black, ZP);

+					line(screen, last, e.mouse.xy, Enddisc, Enddisc, b, colors[c], ZP);

 				else

-					fillellipse(screen, e.mouse.xy, brushsize, brushsize, display->black, ZP);

-				

+					fillellipse(screen, e.mouse.xy, b, b, colors[c], ZP);

 				last = e.mouse.xy;

 				haslast = 1;

 				flushimage(display, 1);

 			} else

 				haslast = 0;

-			if(e.mouse.buttons & 4){

-				fillellipse(screen, e.mouse.xy, brushsize, brushsize, display->white, ZP);

-				flushimage(display, 1);

-			}

 			break;

 		case Ekeyboard:

 			if(e.kbdc == 'b'){

 				if(eenter("Brush", brush, sizeof(brush), &e.mouse) <= 0)

 					break;

-				brushsize = atoi(brush);

+				b = atoi(brush);

 			}

-			if(e.kbdc == 'c')

-				draw(screen, screen->r, display->white, 0, ZP);

+			if(e.kbdc == 'c'){

+				if(eenter("Color", color, sizeof(color), &e.mouse) <= 0)

+					break;

+				cn = atoi(color);

+				if(cn >= 0 && cn < NCOLORS)

+					c = cn;

+			}

+			if(e.kbdc == 'f'){

+				if(eenter("Fill", fill, sizeof(fill), &e.mouse) <= 0)

+					break;

+				f = atoi(fill);

+				if(f >= 0 && f < NCOLORS)

+					draw(screen, screen->r, colors[f], 0, ZP);

+			}

 			if(e.kbdc == 'o'){

 				if(eenter("Open file", file, sizeof(file), &e.mouse) <= 0)

 					break;

-- 

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