Break up and simplify screen_redraw_screen.

3 files changed, 72 insertions, 65 deletions

diff --git a/screen-redraw.c b/screen-redraw.c
index a67cb952..3a082cbf 100644
--- a/screen-redraw.c
+++ b/screen-redraw.c
@@ -29,6 +29,9 @@ int	screen_redraw_check_cell(struct client *, u_int, u_int,
 int	screen_redraw_check_active(u_int, u_int, int, struct window *,
 	    struct window_pane *);
 
+void	screen_redraw_draw_borders(struct client *, int, u_int);
+void	screen_redraw_draw_panes(struct client *, u_int);
+void	screen_redraw_draw_status(struct client *, u_int);
 void	screen_redraw_draw_number(struct client *, struct window_pane *);
 
 #define CELL_INSIDE 0
@@ -216,15 +219,13 @@ screen_redraw_check_active(u_int px, u_int py, int type, struct window *w,
 
 /* Redraw entire screen. */
 void
-screen_redraw_screen(struct client *c, int status_only, int borders_only)
+screen_redraw_screen(struct client *c, int draw_panes, int draw_status,
+    int draw_borders)
 {
-	struct window		*w = c->session->curw->window;
-	struct options		*oo = &c->session->options;
-	struct tty		*tty = &c->tty;
-	struct window_pane	*wp;
-	struct grid_cell	 active_gc, other_gc;
-	u_int		 	 i, j, type, top;
-	int		 	 status, spos;
+	struct options	*oo = &c->session->options;
+	struct tty	*tty = &c->tty;
+	u_int		 top;
+	int	 	 status, spos;
 
 	/* Suspended clients should not be updated. */
 	if (c->flags & CLIENT_SUSPENDED)
@@ -239,30 +240,52 @@ screen_redraw_screen(struct client *c, int status_only, int borders_only)
 	top = 0;
 	if (status && spos == 0)
 		top = 1;
+	if (!status)
+		draw_status = 0;
+
+	if (draw_borders)
+		screen_redraw_draw_borders(c, status, top);
+	if (draw_panes)
+		screen_redraw_draw_panes(c, top);
+	if (draw_status)
+		screen_redraw_draw_status(c, top);
+	tty_reset(tty);
+}
 
-	/* If only drawing status and it is present, don't need the rest. */
-	if (status_only && status) {
-		if (top)
-			tty_draw_line(tty, &c->status, 0, 0, 0);
-		else
-			tty_draw_line(tty, &c->status, 0, 0, tty->sy - 1);
-		tty_reset(tty);
+/* Draw a single pane. */
+void
+screen_redraw_pane(struct client *c, struct window_pane *wp)
+{
+	u_int	i, yoff;
+
+	if (!window_pane_visible(wp))
 		return;
-	}
 
-	/* Set up pane border attributes. */
+	yoff = wp->yoff;
+	if (status_at_line(c) == 0)
+		yoff++;
+
+	for (i = 0; i < wp->sy; i++)
+		tty_draw_line(&c->tty, wp->screen, i, wp->xoff, yoff);
+	tty_reset(&c->tty);
+}
+
+/* Draw the borders. */
+void
+screen_redraw_draw_borders(struct client *c, int status, u_int top)
+{
+	struct window		*w = c->session->curw->window;
+	struct options		*oo = &c->session->options;
+	struct tty		*tty = &c->tty;
+	struct window_pane	*wp;
+	struct grid_cell	 active_gc, other_gc;
+	u_int		 	 i, j, type;
+
 	style_apply(&other_gc, oo, "pane-border-style");
 	style_apply(&active_gc, oo, "pane-active-border-style");
-	active_gc.attr = other_gc.attr = GRID_ATTR_CHARSET; /* nuke existing */
+	active_gc.attr = other_gc.attr = GRID_ATTR_CHARSET;
 
-	/* Draw background and borders. */
 	for (j = 0; j < tty->sy - status; j++) {
-		if (status_only) {
-			if (spos == 1 && j != tty->sy - 1)
-				continue;
-			else if (spos == 0 && j != 0)
-				break;
-		}
 		for (i = 0; i < tty->sx; i++) {
 			type = screen_redraw_check_cell(c, i, j, &wp);
 			if (type == CELL_INSIDE)
@@ -275,55 +298,39 @@ screen_redraw_screen(struct client *c, int status_only, int borders_only)
 			tty_putc(tty, CELL_BORDERS[type]);
 		}
 	}
+}
 
-	/* If only drawing borders, that's it. */
-	if (borders_only)
-		return;
+/* Draw the panes. */
+void
+screen_redraw_draw_panes(struct client *c, u_int top)
+{
+	struct window		*w = c->session->curw->window;
+	struct tty		*tty = &c->tty;
+	struct window_pane	*wp;
+	struct screen		*s;
+	u_int		 	 i;
 
-	/* Draw the panes, if necessary. */
 	TAILQ_FOREACH(wp, &w->panes, entry) {
 		if (!window_pane_visible(wp))
 			continue;
-		for (i = 0; i < wp->sy; i++) {
-			if (status_only) {
-				if (spos == 1 && wp->yoff + i != tty->sy - 1)
-					continue;
-				else if (spos == 0 && wp->yoff + i != 0)
-					break;
-			}
-			tty_draw_line(
-			    tty, wp->screen, i, wp->xoff, top + wp->yoff);
-		}
+		s = wp->screen;
+		for (i = 0; i < wp->sy; i++)
+			tty_draw_line(tty, s, i, wp->xoff, top + wp->yoff);
 		if (c->flags & CLIENT_IDENTIFY)
 			screen_redraw_draw_number(c, wp);
 	}
-
-	/* Draw the status line. */
-	if (status) {
-		if (top)
-			tty_draw_line(tty, &c->status, 0, 0, 0);
-		else
-			tty_draw_line(tty, &c->status, 0, 0, tty->sy - 1);
-	}
-	tty_reset(tty);
 }
 
-/* Draw a single pane. */
+/* Draw the status line. */
 void
-screen_redraw_pane(struct client *c, struct window_pane *wp)
+screen_redraw_draw_status(struct client *c, u_int top)
 {
-	u_int	i, yoff;
+	struct tty	*tty = &c->tty;
 
-	if (!window_pane_visible(wp))
-		return;
-
-	yoff = wp->yoff;
-	if (status_at_line(c) == 0)
-		yoff++;
-
-	for (i = 0; i < wp->sy; i++)
-		tty_draw_line(&c->tty, wp->screen, i, wp->xoff, yoff);
-	tty_reset(&c->tty);
+	if (top)
+		tty_draw_line(tty, &c->status, 0, 0, 0);
+	else
+		tty_draw_line(tty, &c->status, 0, 0, tty->sy - 1);
 }
 
 /* Draw number on a pane. */
diff --git a/server-client.c b/server-client.c
index c6257edb..5a6cb7d9 100644
--- a/server-client.c
+++ b/server-client.c
@@ -743,7 +743,7 @@ server_client_check_redraw(struct client *c)
 	}
 
 	if (c->flags & CLIENT_REDRAW) {
-		screen_redraw_screen(c, 0, 0);
+		screen_redraw_screen(c, 1, 1, 1);
 		c->flags &= ~(CLIENT_STATUS|CLIENT_BORDERS);
 	} else if (c->flags & CLIENT_REDRAWWINDOW) {
 		TAILQ_FOREACH(wp, &c->session->curw->window->panes, entry)
@@ -757,10 +757,10 @@ server_client_check_redraw(struct client *c)
 	}
 
 	if (c->flags & CLIENT_BORDERS)
-		screen_redraw_screen(c, 0, 1);
+		screen_redraw_screen(c, 0, 0, 1);
 
 	if (c->flags & CLIENT_STATUS)
-		screen_redraw_screen(c, 1, 0);
+		screen_redraw_screen(c, 0, 1, 0);
 
 	c->tty.flags |= flags;
 
diff --git a/tmux.h b/tmux.h
index b8fd445c..c6919622 100644
--- a/tmux.h
+++ b/tmux.h
@@ -2084,7 +2084,7 @@ void	 screen_write_setselection(struct screen_write_ctx *, u_char *, u_int);
 void	 screen_write_rawstring(struct screen_write_ctx *, u_char *, u_int);
 
 /* screen-redraw.c */
-void	 screen_redraw_screen(struct client *, int, int);
+void	 screen_redraw_screen(struct client *, int, int, int);
 void	 screen_redraw_pane(struct client *, struct window_pane *);
 
 /* screen.c */