From 5617d2bd6044a27e154ef61caf45896e2131fb3a Mon Sep 17 00:00:00 2001 From: Armin Preiml Date: Sat, 25 Aug 2018 09:14:55 +0200 Subject: introduce wlr_output_layout_farthest_output Similar to wlr_output_layout_adjacent_output but will return the one that is the farthest away from the reference in given direction. --- include/wlr/types/wlr_output_layout.h | 3 +++ types/wlr_output_layout.c | 31 +++++++++++++++++++++++++++---- 2 files changed, 30 insertions(+), 4 deletions(-) diff --git a/include/wlr/types/wlr_output_layout.h b/include/wlr/types/wlr_output_layout.h index 2ac12a6a..cc9d2328 100644 --- a/include/wlr/types/wlr_output_layout.h +++ b/include/wlr/types/wlr_output_layout.h @@ -126,5 +126,8 @@ enum wlr_direction { struct wlr_output *wlr_output_layout_adjacent_output( struct wlr_output_layout *layout, enum wlr_direction direction, struct wlr_output *reference, double ref_lx, double ref_ly); +struct wlr_output *wlr_output_layout_farthest_output( + struct wlr_output_layout *layout, enum wlr_direction direction, + struct wlr_output *reference, double ref_lx, double ref_ly); #endif diff --git a/types/wlr_output_layout.c b/types/wlr_output_layout.c index 5ad0c99e..e634d2b2 100644 --- a/types/wlr_output_layout.c +++ b/types/wlr_output_layout.c @@ -430,15 +430,20 @@ struct wlr_output *wlr_output_layout_get_center_output( return wlr_output_layout_output_at(layout, dest_x, dest_y); } +enum distance_selection_method { + NEAREST, + FARTHEST +}; -struct wlr_output *wlr_output_layout_adjacent_output( +struct wlr_output *wlr_output_layout_output_in_direction( struct wlr_output_layout *layout, enum wlr_direction direction, - struct wlr_output *reference, double ref_lx, double ref_ly) { + struct wlr_output *reference, double ref_lx, double ref_ly, + enum distance_selection_method distance_method) { assert(reference); struct wlr_box *ref_box = wlr_output_layout_get_box(layout, reference); - double min_distance = DBL_MAX; + double min_distance = (distance_method == NEAREST) ? DBL_MAX : DBL_MIN; struct wlr_output *closest_output = NULL; struct wlr_output_layout_output *l_output; wl_list_for_each(l_output, &layout->outputs, link) { @@ -471,10 +476,28 @@ struct wlr_output *wlr_output_layout_adjacent_output( ref_lx, ref_ly, &x, &y); double distance = (x - ref_lx) * (x - ref_lx) + (y - ref_ly) * (y - ref_ly); - if (distance < min_distance) { + + if ((distance_method == NEAREST) + ? distance < min_distance + : distance > min_distance) { min_distance = distance; closest_output = l_output->output; } } return closest_output; } + +struct wlr_output *wlr_output_layout_adjacent_output( + struct wlr_output_layout *layout, enum wlr_direction direction, + struct wlr_output *reference, double ref_lx, double ref_ly) { + return wlr_output_layout_output_in_direction(layout, direction, + reference, ref_lx, ref_ly, NEAREST); +} + +struct wlr_output *wlr_output_layout_farthest_output( + struct wlr_output_layout *layout, enum wlr_direction direction, + struct wlr_output *reference, double ref_lx, double ref_ly) { + return wlr_output_layout_output_in_direction(layout, direction, + reference, ref_lx, ref_ly, FARTHEST); +} + -- cgit v1.2.3