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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 setup(void);
static void spawn(const Arg *arg); static void spawn(const Arg *arg);
static void unmapnotify(struct wl_listener *listener, void *data); 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); struct wlr_surface **surface, double *sx, double *sy);
/* variables */ /* variables */
@ -146,7 +146,7 @@ static struct wl_listener request_cursor;
static struct wl_list keyboards; static struct wl_list keyboards;
static unsigned int cursor_mode; static unsigned int cursor_mode;
static Client *grabbed_client; static Client *grabbed_client;
static double grab_x, grab_y; static double grabsx, grabsy;
static int grab_width, grab_height; static int grab_width, grab_height;
static struct wlr_output_layout *output_layout; 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 we are currently grabbing the mouse, handle and return */
if (cursor_mode == CurMove) { if (cursor_mode == CurMove) {
/* Move the grabbed client to the new position. */ /* Move the grabbed client to the new position. */
grabbed_client->x = cursor->x - grab_x; grabbed_client->x = cursor->x - grabsx;
grabbed_client->y = cursor->y - grab_y; grabbed_client->y = cursor->y - grabsy;
return; return;
} else if (cursor_mode == CurResize) { } 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 * compositor, you'd wait for the client to prepare a buffer at
* the new size, then commit any movement that was prepared. * the new size, then commit any movement that was prepared.
*/ */
double dx = cursor->x - grab_x; double dx = cursor->x - grabsx;
double dy = cursor->y - grab_y; double dy = cursor->y - grabsy;
wlr_xdg_toplevel_set_size(grabbed_client->xdg_surface, wlr_xdg_toplevel_set_size(grabbed_client->xdg_surface,
grab_width + dx, grab_height + dy); grab_width + dx, grab_height + dy);
return; return;
@ -595,17 +595,17 @@ moveresize(Client *c, unsigned int mode)
} }
grabbed_client = c; grabbed_client = c;
cursor_mode = mode; cursor_mode = mode;
struct wlr_box geo_box; struct wlr_box sbox;
wlr_xdg_surface_get_geometry(c->xdg_surface, &geo_box); wlr_xdg_surface_get_geometry(c->xdg_surface, &sbox);
if (mode == CurMove) { if (mode == CurMove) {
grab_x = cursor->x - c->x; grabsx = cursor->x - c->x;
grab_y = cursor->y - c->y; grabsy = cursor->y - c->y;
} else { } else {
grab_x = cursor->x + geo_box.x; grabsx = cursor->x + sbox.x;
grab_y = cursor->y + geo_box.y; grabsy = cursor->y + sbox.y;
} }
grab_width = geo_box.width; grab_width = sbox.width;
grab_height = geo_box.height; grab_height = sbox.height;
} }
void 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 /* We also have to apply the scale factor for HiDPI outputs. This is only
* part of the puzzle, dwl does not fully support HiDPI. */ * part of the puzzle, dwl does not fully support HiDPI. */
struct wlr_box box = { struct wlr_box obox = {
.x = ox * output->scale, .x = ox * output->scale,
.y = oy * output->scale, .y = oy * output->scale,
.width = surface->current.width * 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]; float matrix[9];
enum wl_output_transform transform = enum wl_output_transform transform =
wlr_output_transform_invert(surface->current.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); output->transform_matrix);
/* This takes our matrix, the texture, and an alpha, and performs the actual /* This takes our matrix, the texture, and an alpha, and performs the actual
@ -742,13 +742,13 @@ resizemouse(const Arg *arg)
if (!c) { if (!c) {
return; return;
} }
struct wlr_box geo_box; struct wlr_box sbox;
wlr_xdg_surface_get_geometry(c->xdg_surface, &geo_box); wlr_xdg_surface_get_geometry(c->xdg_surface, &sbox);
/* Doesn't work for X11 output - the next absolute motion event /* Doesn't work for X11 output - the next absolute motion event
* returns the cursor to where it started */ * returns the cursor to where it started */
wlr_cursor_warp_closest(cursor, NULL, wlr_cursor_warp_closest(cursor, NULL,
c->x + geo_box.x + geo_box.width, c->x + sbox.x + sbox.width,
c->y + geo_box.y + geo_box.height); c->y + sbox.y + sbox.height);
moveresize(c, CurResize); moveresize(c, CurResize);
} }
@ -944,7 +944,7 @@ unmapnotify(struct wl_listener *listener, void *data)
} }
Client * Client *
xytoclient(double lx, double ly, xytoclient(double x, double y,
struct wlr_surface **surface, double *sx, double *sy) struct wlr_surface **surface, double *sx, double *sy)
{ {
/* This iterates over all of our surfaces and attempts to find one under the /* 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 * XDG toplevels may have nested surfaces, such as popup windows
* for context menus or tooltips. This function tests if any of * for context menus or tooltips. This function tests if any of
* those are underneath the coordinates lx and ly (in output * those are underneath the coordinates x and y (in layout
* Layout Coordinates). If so, it sets the surface pointer to * coordinates). If so, it sets the surface pointer to that
* that wlr_surface and the sx and sy coordinates to the * wlr_surface and the sx and sy coordinates to the coordinates
* coordinates relative to that surface's top-left corner. * relative to that surface's top-left corner.
*/ */
double _sx, _sy; double _sx, _sy;
struct wlr_surface *_surface = NULL; struct wlr_surface *_surface = NULL;
_surface = wlr_xdg_surface_surface_at(c->xdg_surface, _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) { if (_surface != NULL) {
*sx = _sx; *sx = _sx;