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-rw-r--r--dwl.c365
1 files changed, 365 insertions, 0 deletions
diff --git a/dwl.c b/dwl.c
index 730e46a..e305da5 100644
--- a/dwl.c
+++ b/dwl.c
@@ -19,6 +19,7 @@
#include <wlr/types/wlr_export_dmabuf_v1.h>
#include <wlr/types/wlr_gamma_control_v1.h>
#include <wlr/types/wlr_input_device.h>
+#include <wlr/types/wlr_layer_shell_v1.h>
#include <wlr/types/wlr_keyboard.h>
#include <wlr/types/wlr_matrix.h>
#include <wlr/types/wlr_output.h>
@@ -129,6 +130,19 @@ typedef struct {
} Keyboard;
typedef struct {
+ struct wlr_layer_surface_v1 *layer_surface;
+ struct wl_list link;
+
+ struct wl_listener destroy;
+ struct wl_listener map;
+ struct wl_listener unmap;
+ struct wl_listener surface_commit;
+
+ struct wlr_box geo;
+ enum zwlr_layer_shell_v1_layer layer;
+} Layer;
+
+typedef struct {
const char *symbol;
void (*arrange)(Monitor *);
} Layout;
@@ -140,6 +154,7 @@ struct Monitor {
struct wl_listener destroy;
struct wlr_box m; /* monitor area, layout-relative */
struct wlr_box w; /* window area, layout-relative */
+ struct wl_list layers[4]; // Layer::link
const Layout *lt[2];
unsigned int seltags;
unsigned int sellt;
@@ -175,21 +190,30 @@ struct render_data {
/* function declarations */
static void applybounds(Client *c, struct wlr_box *bbox);
+static void applyexclusive(struct wlr_box *usable_area, uint32_t anchor,
+ int32_t exclusive, int32_t margin_top, int32_t margin_right,
+ int32_t margin_bottom, int32_t margin_left);
static void applyrules(Client *c);
static void arrange(Monitor *m);
+static void arrangelayer(Monitor *m, struct wl_list *list,
+ struct wlr_box *usablearea, bool exclusive);
+static void arrangelayers(Monitor *m);
static void axisnotify(struct wl_listener *listener, void *data);
static void buttonpress(struct wl_listener *listener, void *data);
static void chvt(const Arg *arg);
static void cleanup(void);
static void cleanupkeyboard(struct wl_listener *listener, void *data);
static void cleanupmon(struct wl_listener *listener, void *data);
+static void commitlayernotify(struct wl_listener *listener, void *data);
static void commitnotify(struct wl_listener *listener, void *data);
static void createkeyboard(struct wlr_input_device *device);
static void createmon(struct wl_listener *listener, void *data);
static void createnotify(struct wl_listener *listener, void *data);
+static void createlayer(struct wl_listener *listener, void *data);
static void createpointer(struct wlr_input_device *device);
static void createxdeco(struct wl_listener *listener, void *data);
static void cursorframe(struct wl_listener *listener, void *data);
+static void destroylayernotify(struct wl_listener *listener, void *data);
static void destroynotify(struct wl_listener *listener, void *data);
static void destroyxdeco(struct wl_listener *listener, void *data);
static Monitor *dirtomon(int dir);
@@ -204,6 +228,7 @@ static int keybinding(uint32_t mods, xkb_keysym_t sym);
static void keypress(struct wl_listener *listener, void *data);
static void keypressmod(struct wl_listener *listener, void *data);
static void killclient(const Arg *arg);
+static void maplayernotify(struct wl_listener *listener, void *data);
static void maprequest(struct wl_listener *listener, void *data);
static void monocle(Monitor *m);
static void motionabsolute(struct wl_listener *listener, void *data);
@@ -236,7 +261,9 @@ static void tile(Monitor *m);
static void togglefloating(const Arg *arg);
static void toggletag(const Arg *arg);
static void toggleview(const Arg *arg);
+static void unmaplayer(Layer *layer);
static void unmapnotify(struct wl_listener *listener, void *data);
+static void unmaplayernotify(struct wl_listener *listener, void *data);
static void view(const Arg *arg);
static Client *xytoclient(double x, double y);
static Monitor *xytomon(double x, double y);
@@ -255,6 +282,7 @@ static struct wl_list fstack; /* focus order */
static struct wl_list stack; /* stacking z-order */
static struct wl_list independents;
static struct wlr_xdg_decoration_manager_v1 *xdeco_mgr;
+static struct wlr_layer_shell_v1 *layer_shell;
static struct wlr_cursor *cursor;
static struct wlr_xcursor_manager *cursor_mgr;
@@ -280,6 +308,7 @@ static struct wl_listener new_input = {.notify = inputdevice};
static struct wl_listener new_output = {.notify = createmon};
static struct wl_listener new_xdeco = {.notify = createxdeco};
static struct wl_listener new_xdg_surface = {.notify = createnotify};
+static struct wl_listener new_layer_shell_surface = {.notify = createlayer};
static struct wl_listener request_cursor = {.notify = setcursor};
static struct wl_listener request_set_psel = {.notify = setpsel};
static struct wl_listener request_set_sel = {.notify = setsel};
@@ -323,6 +352,71 @@ applybounds(Client *c, struct wlr_box *bbox)
}
void
+applyexclusive(struct wlr_box *usable_area,
+ uint32_t anchor, int32_t exclusive,
+ int32_t margin_top, int32_t margin_right,
+ int32_t margin_bottom, int32_t margin_left) {
+ struct {
+ uint32_t singular_anchor;
+ uint32_t anchor_triplet;
+ int *positive_axis;
+ int *negative_axis;
+ int margin;
+ } edges[4];
+
+ if (exclusive <= 0)
+ return;
+
+ // Top
+ edges[0].singular_anchor = ZWLR_LAYER_SURFACE_V1_ANCHOR_TOP;
+ edges[0].anchor_triplet =
+ ZWLR_LAYER_SURFACE_V1_ANCHOR_LEFT |
+ ZWLR_LAYER_SURFACE_V1_ANCHOR_RIGHT |
+ ZWLR_LAYER_SURFACE_V1_ANCHOR_TOP;
+ edges[0].positive_axis = &usable_area->y;
+ edges[0].negative_axis = &usable_area->height;
+ edges[0].margin = margin_top;
+ // Bottom
+ edges[1].singular_anchor = ZWLR_LAYER_SURFACE_V1_ANCHOR_BOTTOM;
+ edges[1].anchor_triplet =
+ ZWLR_LAYER_SURFACE_V1_ANCHOR_LEFT |
+ ZWLR_LAYER_SURFACE_V1_ANCHOR_RIGHT |
+ ZWLR_LAYER_SURFACE_V1_ANCHOR_BOTTOM;
+ edges[1].positive_axis = NULL;
+ edges[1].negative_axis = &usable_area->height;
+ edges[1].margin = margin_bottom;
+ // Left
+ edges[2].singular_anchor = ZWLR_LAYER_SURFACE_V1_ANCHOR_LEFT;
+ edges[2].anchor_triplet =
+ ZWLR_LAYER_SURFACE_V1_ANCHOR_LEFT |
+ ZWLR_LAYER_SURFACE_V1_ANCHOR_TOP |
+ ZWLR_LAYER_SURFACE_V1_ANCHOR_BOTTOM;
+ edges[2].positive_axis = &usable_area->x;
+ edges[2].negative_axis = &usable_area->width;
+ edges[2].margin = margin_left;
+ // Right
+ edges[3].singular_anchor = ZWLR_LAYER_SURFACE_V1_ANCHOR_RIGHT;
+ edges[3].anchor_triplet =
+ ZWLR_LAYER_SURFACE_V1_ANCHOR_RIGHT |
+ ZWLR_LAYER_SURFACE_V1_ANCHOR_TOP |
+ ZWLR_LAYER_SURFACE_V1_ANCHOR_BOTTOM;
+ edges[3].positive_axis = NULL;
+ edges[3].negative_axis = &usable_area->width;
+ edges[3].margin = margin_right;
+
+ for (size_t i = 0; i < LENGTH(edges); ++i) {
+ if ((anchor == edges[i].singular_anchor || anchor == edges[i].anchor_triplet)
+ && exclusive + edges[i].margin > 0) {
+ if (edges[i].positive_axis)
+ *edges[i].positive_axis += exclusive + edges[i].margin;
+ if (edges[i].negative_axis)
+ *edges[i].negative_axis -= exclusive + edges[i].margin;
+ break;
+ }
+ }
+}
+
+void
applyrules(Client *c)
{
const char *appid, *title;
@@ -374,6 +468,152 @@ arrange(Monitor *m)
}
void
+arrangelayer(Monitor *m, struct wl_list *list, struct wlr_box *usable_area, bool exclusive)
+{
+ Layer *layer;
+ struct wlr_box full_area = { 0 };
+ wlr_output_effective_resolution(m->wlr_output,
+ &full_area.width, &full_area.height);
+
+ wl_list_for_each(layer, list, link) {
+ struct wlr_layer_surface_v1 *layer_surface = layer->layer_surface;
+ struct wlr_layer_surface_v1_state *state = &layer_surface->current;
+ struct wlr_box bounds;
+ struct wlr_box box = {
+ .width = state->desired_width,
+ .height = state->desired_height
+ };
+ const uint32_t both_horiz = ZWLR_LAYER_SURFACE_V1_ANCHOR_LEFT
+ | ZWLR_LAYER_SURFACE_V1_ANCHOR_RIGHT;
+ const uint32_t both_vert = ZWLR_LAYER_SURFACE_V1_ANCHOR_TOP
+ | ZWLR_LAYER_SURFACE_V1_ANCHOR_BOTTOM;
+
+ if (exclusive != (state->exclusive_zone > 0))
+ continue;
+
+ bounds = state->exclusive_zone == -1 ? full_area : *usable_area;
+
+ // Horizontal axis
+ if ((state->anchor & both_horiz) && box.width == 0) {
+ box.x = bounds.x;
+ box.width = bounds.width;
+ } else if ((state->anchor & ZWLR_LAYER_SURFACE_V1_ANCHOR_LEFT)) {
+ box.x = bounds.x;
+ } else if ((state->anchor & ZWLR_LAYER_SURFACE_V1_ANCHOR_RIGHT)) {
+ box.x = bounds.x + (bounds.width - box.width);
+ } else {
+ box.x = bounds.x + ((bounds.width / 2) - (box.width / 2));
+ }
+ // Vertical axis
+ if ((state->anchor & both_vert) && box.height == 0) {
+ box.y = bounds.y;
+ box.height = bounds.height;
+ } else if ((state->anchor & ZWLR_LAYER_SURFACE_V1_ANCHOR_TOP)) {
+ box.y = bounds.y;
+ } else if ((state->anchor & ZWLR_LAYER_SURFACE_V1_ANCHOR_BOTTOM)) {
+ box.y = bounds.y + (bounds.height - box.height);
+ } else {
+ box.y = bounds.y + ((bounds.height / 2) - (box.height / 2));
+ }
+ // Margin
+ if ((state->anchor & both_horiz) == both_horiz) {
+ box.x += state->margin.left;
+ box.width -= state->margin.left + state->margin.right;
+ } else if ((state->anchor & ZWLR_LAYER_SURFACE_V1_ANCHOR_LEFT)) {
+ box.x += state->margin.left;
+ } else if ((state->anchor & ZWLR_LAYER_SURFACE_V1_ANCHOR_RIGHT)) {
+ box.x -= state->margin.right;
+ }
+ if ((state->anchor & both_vert) == both_vert) {
+ box.y += state->margin.top;
+ box.height -= state->margin.top + state->margin.bottom;
+ } else if ((state->anchor & ZWLR_LAYER_SURFACE_V1_ANCHOR_TOP)) {
+ box.y += state->margin.top;
+ } else if ((state->anchor & ZWLR_LAYER_SURFACE_V1_ANCHOR_BOTTOM)) {
+ box.y -= state->margin.bottom;
+ }
+ if (box.width < 0 || box.height < 0) {
+ wlr_layer_surface_v1_close(layer_surface);
+ continue;
+ }
+ layer->geo = box;
+
+ applyexclusive(usable_area, state->anchor, state->exclusive_zone,
+ state->margin.top, state->margin.right,
+ state->margin.bottom, state->margin.left);
+ wlr_layer_surface_v1_configure(layer_surface, box.width, box.height);
+ }
+}
+
+void
+arrangelayers(Monitor *m)
+{
+ struct wlr_box usable_area = { 0 };
+ uint32_t layers_above_shell[] = {
+ ZWLR_LAYER_SHELL_V1_LAYER_OVERLAY,
+ ZWLR_LAYER_SHELL_V1_LAYER_TOP,
+ };
+ size_t nlayers = LENGTH(layers_above_shell);
+ Layer *layer, *topmost = NULL;
+
+ wlr_output_effective_resolution(m->wlr_output,
+ &usable_area.width, &usable_area.height);
+
+ // Arrange exclusive surfaces from top->bottom
+ arrangelayer(m, &m->layers[ZWLR_LAYER_SHELL_V1_LAYER_OVERLAY],
+ &usable_area, true);
+ arrangelayer(m, &m->layers[ZWLR_LAYER_SHELL_V1_LAYER_TOP],
+ &usable_area, true);
+ arrangelayer(m, &m->layers[ZWLR_LAYER_SHELL_V1_LAYER_BOTTOM],
+ &usable_area, true);
+ arrangelayer(m, &m->layers[ZWLR_LAYER_SHELL_V1_LAYER_BACKGROUND],
+ &usable_area, true);
+
+ /* XXX does wlr_output_effective_resolution return the same dimensions
+ as wlr_output_layout_get_box which is used to set m->m ? */
+ if (memcmp(&usable_area, &m->w, sizeof(struct wlr_box))) {
+ memcpy(&m->w, &usable_area, sizeof(struct wlr_box));
+ arrange(m);
+ }
+
+ // Arrange non-exlusive surfaces from top->bottom
+ arrangelayer(m, &m->layers[ZWLR_LAYER_SHELL_V1_LAYER_OVERLAY],
+ &usable_area, false);
+ arrangelayer(m, &m->layers[ZWLR_LAYER_SHELL_V1_LAYER_TOP],
+ &usable_area, false);
+ arrangelayer(m, &m->layers[ZWLR_LAYER_SHELL_V1_LAYER_BOTTOM],
+ &usable_area, false);
+ arrangelayer(m, &m->layers[ZWLR_LAYER_SHELL_V1_LAYER_BACKGROUND],
+ &usable_area, false);
+
+ // Find topmost keyboard interactive layer, if such a layer exists
+ for (size_t i = 0; i < nlayers; ++i) {
+ wl_list_for_each_reverse(layer,
+ &m->layers[layers_above_shell[i]], link) {
+ if (layer->layer_surface->current.keyboard_interactive &&
+ layer->layer_surface->mapped) {
+ topmost = layer;
+ break;
+ }
+ }
+ if (topmost) {
+ break;
+ }
+ }
+
+ if (topmost)
+ wlr_seat_keyboard_notify_enter(seat,
+ topmost->layer_surface->surface, NULL, 0, NULL);
+ else if (
+ seat->keyboard_state.focused_surface
+ && wlr_surface_is_layer_surface(seat->keyboard_state.focused_surface)
+ && !wlr_layer_surface_v1_from_wlr_surface(seat->keyboard_state.focused_surface)
+ ->current.keyboard_interactive
+ )
+ wlr_seat_keyboard_notify_clear_focus(seat);
+}
+
+void
axisnotify(struct wl_listener *listener, void *data)
{
/* This event is forwarded by the cursor when a pointer emits an axis event,
@@ -471,6 +711,28 @@ cleanupmon(struct wl_listener *listener, void *data)
}
void
+commitlayernotify(struct wl_listener *listener, void *data)
+{
+ Layer *layer = wl_container_of(listener, layer, surface_commit);
+ struct wlr_layer_surface_v1 *layer_surface = layer->layer_surface;
+ struct wlr_output *wlr_output = layer_surface->output;
+ Monitor *m;
+
+ if (!wlr_output)
+ return;
+
+ m = wlr_output->data;
+ arrangelayers(m);
+
+ if (layer->layer != layer_surface->current.layer) {
+ wl_list_remove(&layer->link);
+ wl_list_insert(&m->layers[layer_surface->current.layer],
+ &layer->link);
+ layer->layer = layer_surface->current.layer;
+ }
+}
+
+void
commitnotify(struct wl_listener *listener, void *data)
{
Client *c = wl_container_of(listener, c, commit);
@@ -522,6 +784,7 @@ createmon(struct wl_listener *listener, void *data)
struct wlr_output *wlr_output = data;
Monitor *m;
const MonitorRule *r;
+ size_t len;
/* The mode is a tuple of (width, height, refresh rate), and each
* monitor supports only a specific set of modes. We just pick the
@@ -567,6 +830,11 @@ createmon(struct wl_listener *listener, void *data)
*/
wlr_output_layout_add_auto(output_layout, wlr_output);
sgeom = *wlr_output_layout_get_box(output_layout, NULL);
+
+ len = LENGTH(m->layers);
+ for (size_t i = 0; i < len; ++i) {
+ wl_list_init(&m->layers[i]);
+ }
}
void
@@ -601,6 +869,48 @@ createnotify(struct wl_listener *listener, void *data)
}
void
+createlayer(struct wl_listener *listener, void *data)
+{
+ struct wlr_layer_surface_v1 *layer_surface = data;
+ Layer *layer;
+ Monitor *m;
+ struct wlr_layer_surface_v1_state old_state;
+
+ if (!layer_surface->output) {
+ layer_surface->output = selmon->wlr_output;
+ }
+
+ layer = calloc(1, sizeof(Layer));
+ if (!layer)
+ return;
+
+ layer->surface_commit.notify = commitlayernotify;
+ wl_signal_add(&layer_surface->surface->events.commit,
+ &layer->surface_commit);
+
+ layer->destroy.notify = destroylayernotify;
+ wl_signal_add(&layer_surface->events.destroy, &layer->destroy);
+ layer->map.notify = maplayernotify;
+ wl_signal_add(&layer_surface->events.map, &layer->map);
+ layer->unmap.notify = unmaplayernotify;
+ wl_signal_add(&layer_surface->events.unmap, &layer->unmap);
+
+ layer->layer_surface = layer_surface;
+ layer_surface->data = layer;
+
+ m = layer_surface->output->data;
+
+ wl_list_insert(&m->layers[layer_surface->client_pending.layer], &layer->link);
+
+ // Temporarily set the layer's current state to client_pending
+ // so that we can easily arrange it
+ old_state = layer_surface->current;
+ layer_surface->current = layer_surface->client_pending;
+ arrangelayers(m);
+ layer_surface->current = old_state;
+}
+
+void
createpointer(struct wlr_input_device *device)
{
/* We don't do anything special with pointers. All of our pointer handling
@@ -637,6 +947,28 @@ cursorframe(struct wl_listener *listener, void *data)
}
void
+destroylayernotify(struct wl_listener *listener, void *data)
+{
+ Layer *layer = wl_container_of(listener, layer, destroy);
+ Monitor *m;
+
+ if (layer->layer_surface->mapped)
+ unmaplayer(layer);
+ wl_list_remove(&layer->link);
+ wl_list_remove(&layer->destroy.link);
+ wl_list_remove(&layer->map.link);
+ wl_list_remove(&layer->unmap.link);
+ wl_list_remove(&layer->surface_commit.link);
+ if (layer->layer_surface->output) {
+ m = layer->layer_surface->output->data;
+ if (m)
+ arrangelayers(m);
+ layer->layer_surface->output = NULL;
+ }
+ free(layer);
+}
+
+void
destroynotify(struct wl_listener *listener, void *data)
{
/* Called when the surface is destroyed and should never be shown again. */
@@ -902,6 +1234,14 @@ killclient(const Arg *arg)
}
void
+maplayernotify(struct wl_listener *listener, void *data)
+{
+ Layer *layer = wl_container_of(listener, layer, map);
+ wlr_surface_send_enter(layer->layer_surface->surface, layer->layer_surface->output);
+ // XXX recheck pointer focus
+}
+
+void
maprequest(struct wl_listener *listener, void *data)
{
/* Called when the surface is mapped, or ready to display on-screen. */
@@ -1521,6 +1861,10 @@ setup(void)
wl_list_init(&fstack);
wl_list_init(&stack);
wl_list_init(&independents);
+
+ layer_shell = wlr_layer_shell_v1_create(dpy);
+ wl_signal_add(&layer_shell->events.new_surface, &new_layer_shell_surface);
+
xdg_shell = wlr_xdg_shell_create(dpy);
wl_signal_add(&xdg_shell->events.new_surface, &new_xdg_surface);
@@ -1704,6 +2048,20 @@ toggleview(const Arg *arg)
}
void
+unmaplayer(Layer *layer)
+{
+ if (
+ seat->keyboard_state.focused_surface
+ && wlr_surface_is_layer_surface(seat->keyboard_state.focused_surface)
+ && !wlr_layer_surface_v1_from_wlr_surface(seat->keyboard_state.focused_surface)
+ ->current.keyboard_interactive
+ )
+ wlr_seat_keyboard_notify_clear_focus(seat);
+
+ // XXX recheck pointer focus
+}
+
+void
unmapnotify(struct wl_listener *listener, void *data)
{
/* Called when the surface is unmapped, and should no longer be shown. */
@@ -1719,6 +2077,13 @@ unmapnotify(struct wl_listener *listener, void *data)
}
void
+unmaplayernotify(struct wl_listener *listener, void *data)
+{
+ Layer *layer = wl_container_of(listener, layer, unmap);
+ unmaplayer(layer);
+}
+
+void
view(const Arg *arg)
{
Client *sel = selclient();