From 28d4b475dc74302653882e5f5f58506c5c16bcb6 Mon Sep 17 00:00:00 2001
From: emersion <contact@emersion.fr>
Date: Sat, 30 Sep 2017 13:22:42 +0200
Subject: [PATCH] Add edges support, remove get_input_bounds

---
 include/rootston/input.h |  8 ++++++++
 rootston/cursor.c        | 27 ++++++++++++++++++++++-----
 rootston/xdg_shell_v6.c  | 12 ++++--------
 3 files changed, 34 insertions(+), 13 deletions(-)

diff --git a/include/rootston/input.h b/include/rootston/input.h
index cf4513e5..c2e0ff75 100644
--- a/include/rootston/input.h
+++ b/include/rootston/input.h
@@ -53,6 +53,13 @@ enum roots_cursor_mode {
 	ROOTS_CURSOR_ROTATE = 3,
 };
 
+enum roots_cursor_resize_edge {
+	ROOTS_CURSOR_RESIZE_EDGE_TOP = 1,
+	ROOTS_CURSOR_RESIZE_EDGE_BOTTOM = 2,
+	ROOTS_CURSOR_RESIZE_EDGE_LEFT = 4,
+	ROOTS_CURSOR_RESIZE_EDGE_RIGHT = 8,
+};
+
 struct roots_input_event {
 	uint32_t serial;
 	struct wlr_cursor *cursor;
@@ -71,6 +78,7 @@ struct roots_input {
 	enum roots_cursor_mode mode;
 	struct roots_view *active_view;
 	int offs_x, offs_y;
+	int view_width, view_height;
 	uint32_t resize_edges;
 
 	// Ring buffer of input events that could trigger move/resize/rotate
diff --git a/rootston/cursor.c b/rootston/cursor.c
index c57bff52..ac6b1dc3 100644
--- a/rootston/cursor.c
+++ b/rootston/cursor.c
@@ -33,8 +33,10 @@ void view_begin_resize(struct roots_input *input, struct wlr_cursor *cursor,
 		struct roots_view *view, uint32_t edges) {
 	input->mode = ROOTS_CURSOR_RESIZE;
 	wlr_log(L_DEBUG, "begin resize");
-	input->offs_x = cursor->x - (double)view->wlr_surface->current.width - view->x;
-	input->offs_y = cursor->y - (double)view->wlr_surface->current.height - view->y;
+	input->offs_x = cursor->x  - view->x;
+	input->offs_y = cursor->y - view->y;
+	input->view_width = view->wlr_surface->current.width;
+	input->view_height = view->wlr_surface->current.height;
 	input->resize_edges = edges;
 	wlr_seat_pointer_clear_focus(input->wl_seat);
 }
@@ -64,9 +66,24 @@ void cursor_update_position(struct roots_input *input, uint32_t time) {
 		break;
 	case ROOTS_CURSOR_RESIZE:
 		if (input->active_view) {
-			// TODO: edges
-			uint32_t width = input->cursor->x - input->offs_x;
-			uint32_t height = input->cursor->y - input->offs_y;
+			int dx = input->cursor->x - input->offs_x;
+			int dy = input->cursor->y - input->offs_y;
+			int width = input->view_width;
+			int height = input->view_height;
+			if (input->resize_edges & ROOTS_CURSOR_RESIZE_EDGE_TOP) {
+				input->active_view->y = dy;
+				height -= dy;
+			}
+			if (input->resize_edges & ROOTS_CURSOR_RESIZE_EDGE_BOTTOM) {
+				height += dy;
+			}
+			if (input->resize_edges & ROOTS_CURSOR_RESIZE_EDGE_LEFT) {
+				input->active_view->x = dx;
+				width -= dx;
+			}
+			if (input->resize_edges & ROOTS_CURSOR_RESIZE_EDGE_RIGHT) {
+				width += dx;
+			}
 			view_resize(input->active_view, width, height);
 		}
 		break;
diff --git a/rootston/xdg_shell_v6.c b/rootston/xdg_shell_v6.c
index a18aa501..8f5b405c 100644
--- a/rootston/xdg_shell_v6.c
+++ b/rootston/xdg_shell_v6.c
@@ -10,16 +10,12 @@
 #include "rootston/server.h"
 #include "rootston/input.h"
 
-static void get_input_bounds(struct roots_view *view, struct wlr_box *box) {
+/*static void get_input_bounds(struct roots_view *view, struct wlr_box *box) {
 	assert(view->type == ROOTS_XDG_SHELL_V6_VIEW);
 	struct wlr_xdg_surface_v6 *surf = view->xdg_surface_v6;
+	// TODO: surf->geometry can be NULL
 	memcpy(box, surf->geometry, sizeof(struct wlr_box));
-	// TODO: real input bounds
-	box->x -= 10;
-	box->y -= 10;
-	box->width += 20;
-	box->height += 20;
-}
+}*/
 
 static void activate(struct roots_view *view, bool active) {
 	assert(view->type == ROOTS_XDG_SHELL_V6_VIEW);
@@ -108,7 +104,7 @@ void handle_xdg_shell_v6_surface(struct wl_listener *listener, void *data) {
 	view->xdg_surface_v6 = surface;
 	view->roots_xdg_surface_v6 = roots_surface;
 	view->wlr_surface = surface->surface;
-	view->get_input_bounds = get_input_bounds;
+	//view->get_input_bounds = get_input_bounds;
 	view->activate = activate;
 	view->resize = resize;
 	view->desktop = desktop;