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Fix resize bug

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Based on tinywl's 21397e2b
This commit is contained in:
Johan Malm 2020-05-12 20:37:05 +01:00
parent dd32e712ae
commit 48e47fe8f9
4 changed files with 54 additions and 50 deletions
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2
README.md
View file

@ -4,7 +4,7 @@ Aiming to become a light-weight openbox alternative for Wayland
## Dependencies
- wlroots
- wlroots (>=0.10.0)
- wayland-protocols
## Background

2
labwc.h
View file

@ -66,7 +66,7 @@ struct server {
enum cursor_mode cursor_mode;
struct view *grabbed_view;
double grab_x, grab_y;
int grab_width, grab_height;
struct wlr_box grab_box;
uint32_t resize_edges;
struct wlr_output_layout *output_layout;

54
server.c
View file

@ -202,38 +202,44 @@ static void process_cursor_resize(struct server *server, uint32_t time)
* view on one or two axes, but can also move the view if you resize
* from the top or left edges (or top-left corner).
*
* Note that I took some shortcuts here. In a more fleshed-out
* compositor, you'd wait for the client to prepare a buffer at the new
* size, then commit any movement that was prepared.
* TODO: Wait for the client to prepare a buffer at the new size, then
* commit any movement that was prepared.
*/
struct view *view = server->grabbed_view;
double dx = server->cursor->x - server->grab_x;
double dy = server->cursor->y - server->grab_y;
double x = view->x;
double y = view->y;
int width = server->grab_width;
int height = server->grab_height;
double border_x = server->cursor->x - server->grab_x;
double border_y = server->cursor->y - server->grab_y;
int new_left = server->grab_box.x;
int new_right = server->grab_box.x + server->grab_box.width;
int new_top = server->grab_box.y;
int new_bottom = server->grab_box.y + server->grab_box.height;
if (server->resize_edges & WLR_EDGE_TOP) {
y = server->grab_y + dy;
height -= dy;
if (height < 1) {
y += height;
}
new_top = border_y;
if (new_top >= new_bottom)
new_top = new_bottom - 1;
} else if (server->resize_edges & WLR_EDGE_BOTTOM) {
height += dy;
new_bottom = border_y;
if (new_bottom <= new_top)
new_bottom = new_top + 1;
}
if (server->resize_edges & WLR_EDGE_LEFT) {
x = server->grab_x + dx;
width -= dx;
if (width < 1) {
x += width;
}
new_left = border_x;
if (new_left >= new_right)
new_left = new_right - 1;
} else if (server->resize_edges & WLR_EDGE_RIGHT) {
width += dx;
new_right = border_x;
if (new_right <= new_left)
new_right = new_left + 1;
}
view->x = x;
view->y = y;
wlr_xdg_toplevel_set_size(view->xdg_surface, width, height);
struct wlr_box geo_box;
wlr_xdg_surface_get_geometry(view->xdg_surface, &geo_box);
view->x = new_left - geo_box.x;
view->y = new_top - geo_box.y;
int new_width = new_right - new_left;
int new_height = new_bottom - new_top;
wlr_xdg_toplevel_set_size(view->xdg_surface, new_width, new_height);
}
static void process_cursor_motion(struct server *server, uint32_t time)

28
view.c
View file

@ -141,11 +141,14 @@ void begin_interactive(struct view *view, enum cursor_mode mode, uint32_t edges)
* the compositor stops propegating pointer events to clients and
* instead consumes them itself, to move or resize windows. */
struct server *server = view->server;
struct wlr_surface *focused_surface =
server->seat->pointer_state.focused_surface;
server->grabbed_view = view;
server->cursor_mode = mode;
if (mode == TINYWL_CURSOR_MOVE) {
server->grab_x = server->cursor->x - view->x;
server->grab_y = server->cursor->y - view->y;
} else {
struct wlr_box geo_box;
switch (view->type) {
case LAB_XDG_SHELL_VIEW:
@ -159,17 +162,16 @@ void begin_interactive(struct view *view, enum cursor_mode mode, uint32_t edges)
break;
}
if (mode == TINYWL_CURSOR_MOVE) {
server->grab_x = server->cursor->x - view->x;
server->grab_y = server->cursor->y - view->y;
} else {
server->grab_x = server->cursor->x + geo_box.x;
server->grab_y = server->cursor->y + geo_box.y;
}
server->grab_width = geo_box.width;
server->grab_height = geo_box.height;
double border_x = (view->x + geo_box.x) + ((edges & WLR_EDGE_RIGHT) ? geo_box.width : 0);
double border_y = (view->y + geo_box.y) + ((edges & WLR_EDGE_BOTTOM) ? geo_box.height : 0);
server->grab_x = server->cursor->x - border_x;
server->grab_y = server->cursor->y - border_y;
server->grab_box = geo_box;
server->grab_box.x += view->x;
server->grab_box.y += view->y;
server->resize_edges = edges;
}
}
bool is_toplevel(struct view *view)
{
@ -246,10 +248,6 @@ struct view *desktop_view_at(struct server *server, double lx, double ly,
* the cursor. It relies on server->views being ordered from
* top-to-bottom.
*/
struct wlr_box border_box = {
.x = 0, .y = 0,
.width = 0, .height = 0,
};
struct view *view;
wl_list_for_each (view, &server->views, link) {
if (view_at(view, lx, ly, surface, sx, sy))