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consistent naming for coordinate variables 

x and y are reserved (inasmuch as it's dwl's choice) for coordinates
relative to the layout.  ox and oy are used for output-relative
coordinates.  sx and sy are surface-relative.  dx and dy are deltas.

figuring this out the first time was kind of a Thing... just don't pay
attention to what happens in render and you should be fine.
This commit is contained in:
Devin J. Pohly 2020-04-21 19:42:21 -05:00
parent cdeff2475d
commit c37aa00aec
1 changed files with 26 additions and 26 deletions
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52
dwl.c
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@ -120,7 +120,7 @@ static void setcursor(struct wl_listener *listener, void *data);
static void setup(void);
static void spawn(const Arg *arg);
static void unmapnotify(struct wl_listener *listener, void *data);
static Client * xytoclient(double lx, double ly,
static Client * xytoclient(double x, double y,
struct wlr_surface **surface, double *sx, double *sy);
/* variables */
@ -146,7 +146,7 @@ static struct wl_listener request_cursor;
static struct wl_list keyboards;
static unsigned int cursor_mode;
static Client *grabbed_client;
static double grab_x, grab_y;
static double grabsx, grabsy;
static int grab_width, grab_height;
static struct wlr_output_layout *output_layout;
@ -501,8 +501,8 @@ motionnotify(uint32_t time)
/* If we are currently grabbing the mouse, handle and return */
if (cursor_mode == CurMove) {
/* Move the grabbed client to the new position. */
grabbed_client->x = cursor->x - grab_x;
grabbed_client->y = cursor->y - grab_y;
grabbed_client->x = cursor->x - grabsx;
grabbed_client->y = cursor->y - grabsy;
return;
} else if (cursor_mode == CurResize) {
/*
@ -510,8 +510,8 @@ motionnotify(uint32_t time)
* compositor, you'd wait for the client to prepare a buffer at
* the new size, then commit any movement that was prepared.
*/
double dx = cursor->x - grab_x;
double dy = cursor->y - grab_y;
double dx = cursor->x - grabsx;
double dy = cursor->y - grabsy;
wlr_xdg_toplevel_set_size(grabbed_client->xdg_surface,
grab_width + dx, grab_height + dy);
return;
@ -595,17 +595,17 @@ moveresize(Client *c, unsigned int mode)
}
grabbed_client = c;
cursor_mode = mode;
struct wlr_box geo_box;
wlr_xdg_surface_get_geometry(c->xdg_surface, &geo_box);
struct wlr_box sbox;
wlr_xdg_surface_get_geometry(c->xdg_surface, &sbox);
if (mode == CurMove) {
grab_x = cursor->x - c->x;
grab_y = cursor->y - c->y;
grabsx = cursor->x - c->x;
grabsy = cursor->y - c->y;
} else {
grab_x = cursor->x + geo_box.x;
grab_y = cursor->y + geo_box.y;
grabsx = cursor->x + sbox.x;
grabsy = cursor->y + sbox.y;
}
grab_width = geo_box.width;
grab_height = geo_box.height;
grab_width = sbox.width;
grab_height = sbox.height;
}
void
@ -642,7 +642,7 @@ render(struct wlr_surface *surface, int sx, int sy, void *data)
/* We also have to apply the scale factor for HiDPI outputs. This is only
* part of the puzzle, dwl does not fully support HiDPI. */
struct wlr_box box = {
struct wlr_box obox = {
.x = ox * output->scale,
.y = oy * output->scale,
.width = surface->current.width * output->scale,
@ -663,7 +663,7 @@ render(struct wlr_surface *surface, int sx, int sy, void *data)
float matrix[9];
enum wl_output_transform transform =
wlr_output_transform_invert(surface->current.transform);
wlr_matrix_project_box(matrix, &box, transform, 0,
wlr_matrix_project_box(matrix, &obox, transform, 0,
output->transform_matrix);
/* This takes our matrix, the texture, and an alpha, and performs the actual
@ -742,13 +742,13 @@ resizemouse(const Arg *arg)
if (!c) {
return;
}
struct wlr_box geo_box;
wlr_xdg_surface_get_geometry(c->xdg_surface, &geo_box);
struct wlr_box sbox;
wlr_xdg_surface_get_geometry(c->xdg_surface, &sbox);
/* Doesn't work for X11 output - the next absolute motion event
* returns the cursor to where it started */
wlr_cursor_warp_closest(cursor, NULL,
c->x + geo_box.x + geo_box.width,
c->y + geo_box.y + geo_box.height);
c->x + sbox.x + sbox.width,
c->y + sbox.y + sbox.height);
moveresize(c, CurResize);
}
@ -944,7 +944,7 @@ unmapnotify(struct wl_listener *listener, void *data)
}
Client *
xytoclient(double lx, double ly,
xytoclient(double x, double y,
struct wlr_surface **surface, double *sx, double *sy)
{
/* This iterates over all of our surfaces and attempts to find one under the
@ -954,15 +954,15 @@ xytoclient(double lx, double ly,
/*
* XDG toplevels may have nested surfaces, such as popup windows
* for context menus or tooltips. This function tests if any of
* those are underneath the coordinates lx and ly (in output
* Layout Coordinates). If so, it sets the surface pointer to
* that wlr_surface and the sx and sy coordinates to the
* coordinates relative to that surface's top-left corner.
* those are underneath the coordinates x and y (in layout
* coordinates). If so, it sets the surface pointer to that
* wlr_surface and the sx and sy coordinates to the coordinates
* relative to that surface's top-left corner.
*/
double _sx, _sy;
struct wlr_surface *_surface = NULL;
_surface = wlr_xdg_surface_surface_at(c->xdg_surface,
lx - c->x, ly - c->y, &_sx, &_sy);
x - c->x, y - c->y, &_sx, &_sy);
if (_surface != NULL) {
*sx = _sx;