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Add less-simple-touch-input
This commit is contained in:
Micah N Gorrell
A Frederick Christensen
parent
e071166664
commit
1bbf778597
236
less-simple-touch-input/less-simple-touch-input.patch
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236
less-simple-touch-input/less-simple-touch-input.patch
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From 81810896c3034d609ed1bf93e1e04641f9ddf818 Mon Sep 17 00:00:00 2001
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From: Micah N Gorrell <m@minego.net>
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Date: Fri, 9 Feb 2024 17:08:20 -0700
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Subject: [PATCH] Add support for touch screen input devices, and send the
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appropriate events to clients
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---
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dwl.c | 149 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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1 file changed, 149 insertions(+)
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diff --git a/dwl.c b/dwl.c
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index fa76db2..6bff6cd 100644
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--- a/dwl.c
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+++ b/dwl.c
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@@ -45,6 +45,7 @@
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#include <wlr/types/wlr_session_lock_v1.h>
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#include <wlr/types/wlr_single_pixel_buffer_v1.h>
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#include <wlr/types/wlr_subcompositor.h>
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+#include <wlr/types/wlr_touch.h>
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#include <wlr/types/wlr_viewporter.h>
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#include <wlr/types/wlr_virtual_keyboard_v1.h>
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#include <wlr/types/wlr_virtual_pointer_v1.h>
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@@ -158,6 +159,12 @@ typedef struct {
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struct wl_listener key;
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} KeyboardGroup;
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+typedef struct TouchGroup {
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+ struct wl_list link;
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+ struct wlr_touch *touch;
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+ Monitor *m;
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+} TouchGroup;
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+
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typedef struct {
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/* Must keep these three elements in this order */
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unsigned int type; /* LayerShell */
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@@ -255,6 +262,7 @@ static void createlocksurface(struct wl_listener *listener, void *data);
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static void createmon(struct wl_listener *listener, void *data);
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static void createnotify(struct wl_listener *listener, void *data);
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static void createpointer(struct wlr_pointer *pointer);
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+static void createtouch(struct wlr_touch *touch);
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static void cursorframe(struct wl_listener *listener, void *data);
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static void destroydecoration(struct wl_listener *listener, void *data);
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static void destroydragicon(struct wl_listener *listener, void *data);
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@@ -321,6 +329,10 @@ static void togglefloating(const Arg *arg);
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static void togglefullscreen(const Arg *arg);
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static void toggletag(const Arg *arg);
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static void toggleview(const Arg *arg);
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+static void touchdown(struct wl_listener *listener, void *data);
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+static void touchup(struct wl_listener *listener, void *data);
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+static void touchframe(struct wl_listener *listener, void *data);
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+static void touchmotion(struct wl_listener *listener, void *data);
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static void unlocksession(struct wl_listener *listener, void *data);
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static void unmaplayersurfacenotify(struct wl_listener *listener, void *data);
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static void unmapnotify(struct wl_listener *listener, void *data);
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@@ -387,6 +399,7 @@ static struct wlr_output_layout *output_layout;
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static struct wlr_box sgeom;
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static struct wl_list mons;
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static Monitor *selmon;
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+static struct wl_list touches;
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#ifdef XWAYLAND
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static void activatex11(struct wl_listener *listener, void *data);
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@@ -1015,6 +1028,16 @@ createpointer(struct wlr_pointer *pointer)
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wlr_cursor_attach_input_device(cursor, &pointer->base);
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}
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+void
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+createtouch(struct wlr_touch *wlr_touch)
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+{
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+ TouchGroup *touch = ecalloc(1, sizeof(TouchGroup));
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+
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+ touch->touch = wlr_touch;
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+ wl_list_insert(&touches, &touch->link);
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+ wlr_cursor_attach_input_device(cursor, &wlr_touch->base);
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+}
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+
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void
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cursorframe(struct wl_listener *listener, void *data)
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{
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@@ -1344,6 +1367,9 @@ inputdevice(struct wl_listener *listener, void *data)
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case WLR_INPUT_DEVICE_POINTER:
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createpointer(wlr_pointer_from_input_device(device));
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break;
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+ case WLR_INPUT_DEVICE_TOUCH:
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+ createtouch(wlr_touch_from_input_device(device));
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+ break;
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default:
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/* TODO handle other input device types */
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break;
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@@ -1356,6 +1382,8 @@ inputdevice(struct wl_listener *listener, void *data)
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caps = WL_SEAT_CAPABILITY_POINTER;
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if (!wl_list_empty(&kb_group.wlr_group->devices))
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caps |= WL_SEAT_CAPABILITY_KEYBOARD;
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+ if (!wl_list_empty(&touches))
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+ caps |= WL_SEAT_CAPABILITY_TOUCH;
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wlr_seat_set_capabilities(seat, caps);
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}
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@@ -2325,6 +2353,13 @@ setup(void)
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LISTEN_STATIC(&cursor->events.axis, axisnotify);
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LISTEN_STATIC(&cursor->events.frame, cursorframe);
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+ wl_list_init(&touches);
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+
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+ LISTEN_STATIC(&cursor->events.touch_down, touchdown);
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+ LISTEN_STATIC(&cursor->events.touch_frame, touchframe);
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+ LISTEN_STATIC(&cursor->events.touch_motion, touchmotion);
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+ LISTEN_STATIC(&cursor->events.touch_up, touchup);
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+
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cursor_shape_mgr = wlr_cursor_shape_manager_v1_create(dpy, 1);
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LISTEN_STATIC(&cursor_shape_mgr->events.request_set_shape, setcursorshape);
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@@ -2541,6 +2576,120 @@ toggleview(const Arg *arg)
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printstatus();
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}
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+void
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+touchdown(struct wl_listener *listener, void *data)
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+{
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+ struct wlr_touch_down_event *event = data;
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+ double lx, ly;
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+ double sx, sy;
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+ struct wlr_surface *surface;
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+ Client *c = NULL;
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+ uint32_t serial = 0;
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+ Monitor *m;
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+
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+ wlr_idle_notifier_v1_notify_activity(idle_notifier, seat);
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+
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+ // Map the input to the appropriate output, to ensure that rotation is
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+ // handled.
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+ wl_list_for_each(m, &mons, link) {
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+ if (m == NULL || m->wlr_output == NULL) {
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+ continue;
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+ }
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+ if (event->touch->output_name != NULL && 0 != strcmp(event->touch->output_name, m->wlr_output->name)) {
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+ continue;
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+ }
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+
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+ wlr_cursor_map_input_to_output(cursor, &event->touch->base, m->wlr_output);
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+ }
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+
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+ wlr_cursor_absolute_to_layout_coords(cursor, &event->touch->base, event->x, event->y, &lx, &ly);
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+
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+ /* Find the client under the pointer and send the event along. */
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+ xytonode(lx, ly, &surface, &c, NULL, &sx, &sy);
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+ // fprintf(stderr, "touch_down at %lf, %lf\n", lx, ly);
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+
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+ if (surface != NULL) {
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+ serial = wlr_seat_touch_notify_down(seat, surface, event->time_msec, event->touch_id, sx, sy);
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+ }
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+
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+ if (serial && wlr_seat_touch_num_points(seat) == 1) {
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+ /* Emulate a mouse click if the touch event wasn't handled */
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+ struct wlr_pointer_button_event *button_event = data;
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+
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+#ifdef POINTERCONSTRAINTS
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+ struct wlr_pointer_motion_absolute_event *event = data;
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+ double lx, ly, dx, dy;
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+
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+ wlr_cursor_absolute_to_layout_coords(cursor, &event->pointer->base, event->x, event->y, &lx, &ly);
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+ wlr_cursor_warp_closest(cursor, &event->pointer->base, lx, ly);
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+ dx = lx - cursor->x;
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+ dy = ly - cursor->y;
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+ motionnotify(event->time_msec, &event->pointer->base, dx, dy, dx, dy);
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+#else
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+ motionabsolute(listener, data);
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+#endif
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+
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+ button_event->button = BTN_LEFT;
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+ button_event->state = WLR_BUTTON_PRESSED;
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+ buttonpress(listener, button_event);
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+ }
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+}
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+
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+void
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+touchup(struct wl_listener *listener, void *data)
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+{
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+ struct wlr_touch_up_event *event = data;
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+
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+ if (!wlr_seat_touch_get_point(seat, event->touch_id)) {
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+ return;
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+ }
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+
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+ if (wlr_seat_touch_num_points(seat) == 1) {
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+ struct wlr_pointer_button_event *button_event = data;
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+
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+ button_event->button = BTN_LEFT;
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+ button_event->state = WLR_BUTTON_RELEASED;
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+ buttonpress(listener, button_event);
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+ }
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+
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+ wlr_seat_touch_notify_up(seat, event->time_msec, event->touch_id);
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+ wlr_idle_notifier_v1_notify_activity(idle_notifier, seat);
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+}
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+
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+void
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+touchframe(struct wl_listener *listener, void *data)
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+{
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+ wlr_seat_touch_notify_frame(seat);
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+ wlr_idle_notifier_v1_notify_activity(idle_notifier, seat);
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+}
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+
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+void
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+touchmotion(struct wl_listener *listener, void *data)
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+{
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+ struct wlr_touch_motion_event *event = data;
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+ double lx, ly;
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+ double sx, sy;
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+ struct wlr_surface *surface;
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+ Client *c = NULL;
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+
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+ if (!wlr_seat_touch_get_point(seat, event->touch_id)) {
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+ return;
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+ }
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+
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+ wlr_cursor_absolute_to_layout_coords(cursor, &event->touch->base, event->x, event->y, &lx, &ly);
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+ xytonode(lx, ly, &surface, &c, NULL, &sx, &sy);
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+
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+ if (c != NULL) {
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+ wlr_seat_touch_point_focus(seat, surface, event->time_msec, event->touch_id, sx, sy);
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+ wlr_seat_touch_notify_motion(seat, event->time_msec, event->touch_id, sx, sy);
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+ } else {
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+ wlr_seat_touch_point_clear_focus(seat, event->time_msec, event->touch_id);
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+ }
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+
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+ wlr_idle_notifier_v1_notify_activity(idle_notifier, seat);
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+}
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+
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+
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void
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unlocksession(struct wl_listener *listener, void *data)
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{
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--
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2.43.0
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