Support mouse on preview in tree mode.

grid.c

@@ -182,7 +182,7 @@ grid_clear_cell(struct grid *gd, u_int px, u_int py, u_int bg)
 static int
 grid_check_y(struct grid *gd, u_int py)
 {
-	if ((py) >= (gd)->hsize + (gd)->sy) {
+	if (py >= gd->hsize + gd->sy) {
 		log_debug("y out of range: %u", py);
 		return (-1);
 	}

mode-tree.c

@@ -190,27 +190,6 @@ mode_tree_clear_tagged(struct mode_tree_list *mtl)
 	}
 }
 
-static void
-mode_tree_set_current(struct mode_tree_data *mtd, uint64_t tag)
-{
-	u_int	i;
-
-	for (i = 0; i < mtd->line_size; i++) {
-		if (mtd->line_list[i].item->tag == tag)
-			break;
-	}
-	if (i != mtd->line_size) {
-		mtd->current = i;
-		if (mtd->current > mtd->height - 1)
-			mtd->offset = mtd->current - mtd->height + 1;
-		else
-			mtd->offset = 0;
-	} else {
-		mtd->current = 0;
-		mtd->offset = 0;
-	}
-}
-
 void
 mode_tree_up(struct mode_tree_data *mtd, int wrap)
 {
@@ -248,6 +227,36 @@ mode_tree_get_current(struct mode_tree_data *mtd)
 	return (mtd->line_list[mtd->current].item->itemdata);
 }
 
+void
+mode_tree_expand_current(struct mode_tree_data *mtd)
+{
+	if (!mtd->line_list[mtd->current].item->expanded) {
+		mtd->line_list[mtd->current].item->expanded = 1;
+		mode_tree_build(mtd);
+	}
+}
+
+void
+mode_tree_set_current(struct mode_tree_data *mtd, uint64_t tag)
+{
+	u_int	i;
+
+	for (i = 0; i < mtd->line_size; i++) {
+		if (mtd->line_list[i].item->tag == tag)
+			break;
+	}
+	if (i != mtd->line_size) {
+		mtd->current = i;
+		if (mtd->current > mtd->height - 1)
+			mtd->offset = mtd->current - mtd->height + 1;
+		else
+			mtd->offset = 0;
+	} else {
+		mtd->current = 0;
+		mtd->offset = 0;
+	}
+}
+
 u_int
 mode_tree_count_tagged(struct mode_tree_data *mtd)
 {
@@ -718,7 +727,7 @@ mode_tree_filter_free(void *data)
 
 int
 mode_tree_key(struct mode_tree_data *mtd, struct client *c, key_code *key,
-    struct mouse_event *m)
+    struct mouse_event *m, u_int *xp, u_int *yp)
 {
 	struct mode_tree_line	*line;
 	struct mode_tree_item	*current, *parent;
@@ -731,8 +740,13 @@ mode_tree_key(struct mode_tree_data *mtd, struct client *c, key_code *key,
 			*key = KEYC_NONE;
 			return (0);
 		}
+		if (xp != NULL)
+			*xp = x;
+		if (yp != NULL)
+			*yp = y;
 		if (x > mtd->width || y > mtd->height) {
-			*key = KEYC_NONE;
+			if (!mtd->preview || y < mtd->height)
+				*key = KEYC_NONE;
 			return (0);
 		}
 		if (mtd->offset + y < mtd->line_size) {

screen-write.c

@@ -403,6 +403,8 @@ screen_write_fast_copy(struct screen_write_ctx *ctx, struct screen *src,
 
 	cy = s->cy;
 	for (yy = py; yy < py + ny; yy++) {
+		if (yy >= gd->hsize + gd->sy)
+			break;
 		cx = s->cx;
 		for (xx = px; xx < px + nx; xx++) {
 			if (xx >= gd->linedata[yy].cellsize)

tmux.h

@@ -2232,6 +2232,8 @@ typedef int (*mode_tree_search_cb)(void *, void *, const char *);
 typedef void (*mode_tree_each_cb)(void *, void *, struct client *, key_code);
 u_int	 mode_tree_count_tagged(struct mode_tree_data *);
 void	*mode_tree_get_current(struct mode_tree_data *);
+void	 mode_tree_expand_current(struct mode_tree_data *);
+void	 mode_tree_set_current(struct mode_tree_data *, uint64_t);
 void	 mode_tree_each_tagged(struct mode_tree_data *, mode_tree_each_cb,
 	     struct client *, key_code, int);
 void	 mode_tree_up(struct mode_tree_data *, int);
@@ -2248,7 +2250,7 @@ struct mode_tree_item *mode_tree_add(struct mode_tree_data *,
 void	 mode_tree_remove(struct mode_tree_data *, struct mode_tree_item *);
 void	 mode_tree_draw(struct mode_tree_data *);
 int	 mode_tree_key(struct mode_tree_data *, struct client *, key_code *,
-	     struct mouse_event *);
+	     struct mouse_event *, u_int *, u_int *);
 void	 mode_tree_run_command(struct client *, struct cmd_find_state *,
 	     const char *, const char *);
 

window-buffer.c

@@ -344,7 +344,7 @@ window_buffer_key(struct window_pane *wp, struct client *c,
 	struct window_buffer_itemdata	*item;
 	int				 finished;
 
-	finished = mode_tree_key(mtd, c, &key, m);
+	finished = mode_tree_key(mtd, c, &key, m, NULL, NULL);
 	switch (key) {
 	case 'd':
 		item = mode_tree_get_current(mtd);

window-client.c

@@ -318,7 +318,7 @@ window_client_key(struct window_pane *wp, struct client *c,
 	struct window_client_itemdata	*item;
 	int				 finished;
 
-	finished = mode_tree_key(mtd, c, &key, m);
+	finished = mode_tree_key(mtd, c, &key, m, NULL, NULL);
 	switch (key) {
 	case 'd':
 	case 'x':

window-tree.c

@@ -104,6 +104,12 @@ struct window_tree_modedata {
 	enum window_tree_type		  type;
 
 	int				  offset;
+
+	int				  left;
+	int				  right;
+	u_int				  start;
+	u_int				  end;
+	u_int				  each;
 };
 
 static void
@@ -545,17 +551,25 @@ window_tree_draw_session(struct window_tree_modedata *data, struct session *s,
 		return;
 
 	if (left) {
+		data->left = cx + 2;
 		screen_write_cursormove(ctx, cx + 2, cy);
 		screen_write_vline(ctx, sy, 0, 0);
 		screen_write_cursormove(ctx, cx, cy + sy / 2);
 		screen_write_puts(ctx, &grid_default_cell, "<");
-	}
+	} else
+		data->left = -1;
 	if (right) {
+		data->right = cx + sx - 3;
 		screen_write_cursormove(ctx, cx + sx - 3, cy);
 		screen_write_vline(ctx, sy, 0, 0);
 		screen_write_cursormove(ctx, cx + sx - 1, cy + sy / 2);
 		screen_write_puts(ctx, &grid_default_cell, ">");
-	}
+	} else
+		data->right = -1;
+
+	data->start = start;
+	data->end = end;
+	data->each = each;
 
 	i = loop = 0;
 	RB_FOREACH(wl, winlinks, &s->windows) {
@@ -670,17 +684,25 @@ window_tree_draw_window(struct window_tree_modedata *data, struct session *s,
 		return;
 
 	if (left) {
+		data->left = cx + 2;
 		screen_write_cursormove(ctx, cx + 2, cy);
 		screen_write_vline(ctx, sy, 0, 0);
 		screen_write_cursormove(ctx, cx, cy + sy / 2);
 		screen_write_puts(ctx, &grid_default_cell, "<");
-	}
+	} else
+		data->left = -1;
 	if (right) {
+		data->right = cx + sx - 3;
 		screen_write_cursormove(ctx, cx + sx - 3, cy);
 		screen_write_vline(ctx, sy, 0, 0);
 		screen_write_cursormove(ctx, cx + sx - 1, cy + sy / 2);
 		screen_write_puts(ctx, &grid_default_cell, ">");
-	}
+	} else
+		data->right = -1;
+
+	data->start = start;
+	data->end = end;
+	data->each = each;
 
 	i = loop = 0;
 	TAILQ_FOREACH(wp, &w->panes, entry) {
@@ -963,21 +985,86 @@ window_tree_command_free(void *modedata)
 	window_tree_destroy(data);
 }
 
+static key_code
+window_tree_mouse(struct window_tree_modedata *data, key_code key, u_int x,
+    struct window_tree_itemdata *item)
+{
+	struct session		*s;
+	struct winlink		*wl;
+	struct window_pane	*wp;
+	u_int			 loop;
+
+	if (key != KEYC_MOUSEDOWN1_PANE)
+		return (KEYC_NONE);
+
+	if (data->left != -1 && x <= (u_int)data->left)
+		return ('<');
+	if (data->right != -1 && x >= (u_int)data->right)
+		return ('>');
+
+	if (data->left != -1)
+		x -= data->left;
+	else if (x != 0)
+		x--;
+	if (x == 0 || data->end == 0)
+		x = 0;
+	else {
+		x = x / data->each;
+		if (data->start + x >= data->end)
+			x = data->end - 1;
+	}
+
+	window_tree_pull_item(item, &s, &wl, &wp);
+	if (item->type == WINDOW_TREE_SESSION) {
+		if (s == NULL)
+			return (KEYC_NONE);
+		mode_tree_expand_current(data->data);
+		loop = 0;
+		RB_FOREACH(wl, winlinks, &s->windows) {
+			if (loop == data->start + x)
+				break;
+			loop++;
+		}
+		if (wl != NULL)
+			mode_tree_set_current(data->data, (uint64_t)wl);
+		return ('\r');
+	}
+	if (item->type == WINDOW_TREE_WINDOW) {
+		if (wl == NULL)
+			return (KEYC_NONE);
+		mode_tree_expand_current(data->data);
+		loop = 0;
+		TAILQ_FOREACH(wp, &wl->window->panes, entry) {
+			if (loop == data->start + x)
+				break;
+			loop++;
+		}
+		if (wp != NULL)
+			mode_tree_set_current(data->data, (uint64_t)wp);
+		return ('\r');
+	}
+	return (KEYC_NONE);
+}
+
 static void
 window_tree_key(struct window_pane *wp, struct client *c,
     __unused struct session *s, key_code key, struct mouse_event *m)
 {
 	struct window_tree_modedata	*data = wp->modedata;
-	struct window_tree_itemdata	*item;
+	struct window_tree_itemdata	*item, *new_item;
 	char				*name, *prompt;
 	struct cmd_find_state		 fs;
 	int				 finished;
-	u_int				 tagged;
+	u_int				 tagged, x, y;
 
 	item = mode_tree_get_current(data->data);
-	finished = mode_tree_key(data->data, c, &key, m);
+	finished = mode_tree_key(data->data, c, &key, m, &x, &y);
-	if (item != mode_tree_get_current(data->data))
+	if (item != (new_item = mode_tree_get_current(data->data))) {
+		item = new_item;
 		data->offset = 0;
+	}
+	if (KEYC_IS_MOUSE(key))
+		key = window_tree_mouse(data, key, x, item);
 	switch (key) {
 	case '<':
 		data->offset--;