multiseat: somewhat working

1 files changed, 230 insertions, 9 deletions

diff --git a/rootston/roots_cursor.c b/rootston/roots_cursor.c
index 72eff996..92c0cc9e 100644
--- a/rootston/roots_cursor.c
+++ b/rootston/roots_cursor.c
@@ -1,4 +1,11 @@
+#define _XOPEN_SOURCE 700
 #include <stdlib.h>
+#include <math.h>
+#ifdef __linux__
+#include <linux/input-event-codes.h>
+#elif __FreeBSD__
+#include <dev/evdev/input-event-codes.h>
+#endif
 #include <wlr/util/log.h>
 #include "rootston/cursor.h"
 
@@ -19,47 +26,261 @@ void roots_cursor_destroy(struct roots_cursor *cursor) {
 	// TODO
 }
 
+static void cursor_set_xcursor_image(struct roots_cursor *cursor,
+		struct wlr_xcursor_image *image) {
+	wlr_cursor_set_image(cursor->cursor, image->buffer, image->width,
+		image->width, image->height, image->hotspot_x, image->hotspot_y);
+}
+
+static void roots_cursor_update_position(struct roots_cursor *cursor, uint32_t time) {
+	struct roots_desktop *desktop = cursor->seat->input->server->desktop;
+	struct roots_seat *seat = cursor->seat;
+	struct roots_view *view;
+	struct wlr_surface *surface;
+	double sx, sy;
+	switch (cursor->mode) {
+	case ROOTS_CURSOR_PASSTHROUGH:
+		view = view_at(desktop, cursor->cursor->x, cursor->cursor->y,
+			&surface, &sx, &sy);
+		bool set_compositor_cursor = !view && cursor->cursor_client;
+		if (view) {
+			struct wl_client *view_client =
+				wl_resource_get_client(view->wlr_surface->resource);
+			set_compositor_cursor = view_client != cursor->cursor_client;
+		}
+		if (set_compositor_cursor) {
+			struct wlr_xcursor *xcursor = get_default_xcursor(cursor->xcursor_theme);
+			cursor_set_xcursor_image(cursor, xcursor->images[0]);
+			cursor->cursor_client = NULL;
+		}
+		if (view) {
+			wlr_seat_pointer_notify_enter(seat->seat, surface, sx, sy);
+			wlr_seat_pointer_notify_motion(seat->seat, time, sx, sy);
+		} else {
+			wlr_seat_pointer_clear_focus(seat->seat);
+		}
+		break;
+	case ROOTS_CURSOR_MOVE:
+		if (seat->focus) {
+			double dx = cursor->cursor->x - cursor->offs_x;
+			double dy = cursor->cursor->y - cursor->offs_y;
+			view_move(seat->focus, cursor->view_x + dx,
+				cursor->view_y + dy);
+		}
+		break;
+	case ROOTS_CURSOR_RESIZE:
+		if (seat->focus) {
+			double dx = cursor->cursor->x - cursor->offs_x;
+			double dy = cursor->cursor->y - cursor->offs_y;
+			double active_x = seat->focus->x;
+			double active_y = seat->focus->y;
+			int width = cursor->view_width;
+			int height = cursor->view_height;
+			if (cursor->resize_edges & ROOTS_CURSOR_RESIZE_EDGE_TOP) {
+				active_y = cursor->view_y + dy;
+				height -= dy;
+				if (height < 0) {
+					active_y += height;
+				}
+			} else if (cursor->resize_edges & ROOTS_CURSOR_RESIZE_EDGE_BOTTOM) {
+				height += dy;
+			}
+			if (cursor->resize_edges & ROOTS_CURSOR_RESIZE_EDGE_LEFT) {
+				active_x = cursor->view_x + dx;
+				width -= dx;
+				if (width < 0) {
+					active_x += width;
+				}
+			} else if (cursor->resize_edges & ROOTS_CURSOR_RESIZE_EDGE_RIGHT) {
+				width += dx;
+			}
+
+			if (width < 0) {
+				width = 0;
+			}
+			if (height < 0) {
+				height = 0;
+			}
+
+			if (active_x != seat->focus->x ||
+					active_y != seat->focus->y) {
+				view_move_resize(seat->focus, active_x, active_y,
+					width, height);
+			} else {
+				view_resize(seat->focus, width, height);
+			}
+		}
+		break;
+	case ROOTS_CURSOR_ROTATE:
+		if (seat->focus) {
+			struct roots_view *view = seat->focus;
+			int ox = view->x + view->wlr_surface->current->width/2,
+				oy = view->y + view->wlr_surface->current->height/2;
+			int ux = cursor->offs_x - ox,
+				uy = cursor->offs_y - oy;
+			int vx = cursor->cursor->x - ox,
+				vy = cursor->cursor->y - oy;
+			float angle = atan2(vx*uy - vy*ux, vx*ux + vy*uy);
+			int steps = 12;
+			angle = round(angle/M_PI*steps) / (steps/M_PI);
+			view->rotation = cursor->view_rotation + angle;
+		}
+		break;
+	}
+
+}
+
+static void roots_cursor_press_button(struct roots_cursor *cursor,
+		struct wlr_input_device *device, uint32_t time, uint32_t button,
+		uint32_t state) {
+	struct roots_seat *seat = cursor->seat;
+	struct roots_desktop *desktop = seat->input->server->desktop;
+	struct wlr_surface *surface;
+	double sx, sy;
+	struct roots_view *view = view_at(desktop,
+		cursor->cursor->x, cursor->cursor->y, &surface, &sx, &sy);
+
+	if (state == WLR_BUTTON_PRESSED && view && roots_seat_has_meta_pressed(seat)) {
+		// TODO
+		roots_seat_focus_view(seat, view);
+
+		uint32_t edges;
+		switch (button) {
+		case BTN_LEFT:
+			// TODO
+			roots_seat_begin_move(seat, view);
+			break;
+		case BTN_RIGHT:
+			edges = 0;
+			if (sx < view->wlr_surface->current->width/2) {
+				edges |= ROOTS_CURSOR_RESIZE_EDGE_LEFT;
+			} else {
+				edges |= ROOTS_CURSOR_RESIZE_EDGE_RIGHT;
+			}
+			if (sy < view->wlr_surface->current->height/2) {
+				edges |= ROOTS_CURSOR_RESIZE_EDGE_TOP;
+			} else {
+				edges |= ROOTS_CURSOR_RESIZE_EDGE_BOTTOM;
+			}
+			roots_seat_begin_resize(seat, view, edges);
+			break;
+		case BTN_MIDDLE:
+			roots_seat_begin_rotate(seat, view);
+			break;
+		}
+		return;
+	}
+
+	// TODO
+	uint32_t serial =
+		wlr_seat_pointer_notify_button(seat->seat, time, button, state);
+
+	int i;
+	switch (state) {
+	case WLR_BUTTON_RELEASED:
+		seat->cursor->mode = ROOTS_CURSOR_PASSTHROUGH;
+		roots_cursor_update_position(cursor, time);
+		break;
+	case WLR_BUTTON_PRESSED:
+		// TODO
+		i = cursor->input_events_idx;
+		cursor->input_events[i].serial = serial;
+		cursor->input_events[i].cursor = cursor->cursor;
+		cursor->input_events[i].device = device;
+		cursor->input_events_idx = (i + 1)
+			% (sizeof(cursor->input_events) / sizeof(cursor->input_events[0]));
+		roots_seat_focus_view(seat, view);
+		break;
+	}
+}
+
 void roots_cursor_handle_motion(struct roots_cursor *cursor,
 		struct wlr_event_pointer_motion *event) {
-	wlr_log(L_DEBUG, "TODO: cursor handle motion");
+	wlr_cursor_move(cursor->cursor, event->device,
+			event->delta_x, event->delta_y);
+	roots_cursor_update_position(cursor, event->time_msec);
 }
 
 void roots_cursor_handle_motion_absolute(struct roots_cursor *cursor,
 		struct wlr_event_pointer_motion_absolute *event) {
-	wlr_log(L_DEBUG, "TODO: cursor handle motion absolute");
+	wlr_cursor_warp_absolute(cursor->cursor, event->device,
+		event->x_mm / event->width_mm, event->y_mm / event->height_mm);
+	roots_cursor_update_position(cursor, event->time_msec);
 }
 
 void roots_cursor_handle_button(struct roots_cursor *cursor,
 		struct wlr_event_pointer_button *event) {
-	wlr_log(L_DEBUG, "TODO: cursor handle button");
+	roots_cursor_press_button(cursor, event->device, event->time_msec,
+		event->button, event->state);
 }
 
 void roots_cursor_handle_axis(struct roots_cursor *cursor,
 		struct wlr_event_pointer_axis *event) {
-	wlr_log(L_DEBUG, "TODO: cursor handle axis");
+	wlr_seat_pointer_notify_axis(cursor->seat->seat, event->time_msec,
+		event->orientation, event->delta);
 }
 
 void roots_cursor_handle_touch_down(struct roots_cursor *cursor,
 		struct wlr_event_touch_down *event) {
-	wlr_log(L_DEBUG, "TODO: cursor handle touch down");
+	struct roots_touch_point *point =
+		calloc(1, sizeof(struct roots_touch_point));
+	if (!point) {
+		wlr_log(L_ERROR, "could not allocate memory for touch point");
+		return;
+	}
+
+	point->device = event->device->data;
+	point->slot = event->slot;
+	point->x = event->x_mm / event->width_mm;
+	point->y = event->y_mm / event->height_mm;
+	wlr_cursor_warp_absolute(cursor->cursor, event->device, point->x, point->y);
+	roots_cursor_update_position(cursor, event->time_msec);
+	wl_list_insert(&cursor->touch_points, &point->link);
+	roots_cursor_press_button(cursor,  event->device,
+		event->time_msec, BTN_LEFT, 1);
 }
 
 void roots_cursor_handle_touch_up(struct roots_cursor *cursor,
 		struct wlr_event_touch_up *event) {
-	wlr_log(L_DEBUG, "TODO: cursor handle touch up");
+	struct roots_touch_point *point;
+	wl_list_for_each(point, &cursor->touch_points, link) {
+		if (point->slot == event->slot) {
+			wl_list_remove(&point->link);
+			free(point);
+			break;
+		}
+	}
+	roots_cursor_press_button(cursor, event->device,
+		event->time_msec, BTN_LEFT, 0);
 }
 
 void roots_cursor_handle_touch_motion(struct roots_cursor *cursor,
 		struct wlr_event_touch_motion *event) {
-	wlr_log(L_DEBUG, "TODO: cursor handle touch motion");
+	struct roots_touch_point *point;
+	wl_list_for_each(point, &cursor->touch_points, link) {
+		if (point->slot == event->slot) {
+			point->x = event->x_mm / event->width_mm;
+			point->y = event->y_mm / event->height_mm;
+			wlr_cursor_warp_absolute(cursor->cursor, event->device,
+					point->x, point->y);
+			roots_cursor_update_position(cursor, event->time_msec);
+			break;
+		}
+	}
 }
 
 void roots_cursor_handle_tool_axis(struct roots_cursor *cursor,
 		struct wlr_event_tablet_tool_axis *event) {
-	wlr_log(L_DEBUG, "TODO: cursor handle tool axis");
+	if ((event->updated_axes & WLR_TABLET_TOOL_AXIS_X) &&
+			(event->updated_axes & WLR_TABLET_TOOL_AXIS_Y)) {
+		wlr_cursor_warp_absolute(cursor->cursor, event->device,
+			event->x_mm / event->width_mm, event->y_mm / event->height_mm);
+		roots_cursor_update_position(cursor, event->time_msec);
+	}
 }
 
 void roots_cursor_handle_tool_tip(struct roots_cursor *cursor,
 		struct wlr_event_tablet_tool_tip *event) {
-	wlr_log(L_DEBUG, "TODO: cursor handle tool tip");
+	roots_cursor_press_button(cursor, event->device,
+		event->time_msec, BTN_LEFT, event->state);
 }