Add scale parameter to wlr_cursor_set_image

examples/multi-pointer.c

@@ -86,7 +86,7 @@ static void handle_output_add(struct output_state *ostate) {
 
 		struct wlr_xcursor_image *image = sample->xcursor->images[0];
 		wlr_cursor_set_image(cursor->cursor, image->buffer, image->width,
-			image->width, image->height, image->hotspot_x, image->hotspot_y);
+			image->width, image->height, image->hotspot_x, image->hotspot_y, 0);
 
 		wlr_cursor_warp(cursor->cursor, NULL, cursor->cursor->x,
 			cursor->cursor->y);
@@ -150,7 +150,7 @@ static void handle_input_add(struct compositor_state *state,
 
 	struct wlr_xcursor_image *image = sample->xcursor->images[0];
 	wlr_cursor_set_image(cursor->cursor, image->buffer, image->width,
-		image->width, image->height, image->hotspot_x, image->hotspot_y);
+		image->width, image->height, image->hotspot_x, image->hotspot_y, 0);
 
 	wl_list_insert(&sample->cursors, &cursor->link);
 }

examples/pointer.c

@@ -110,7 +110,7 @@ static void handle_output_add(struct output_state *ostate) {
 
 	struct wlr_xcursor_image *image = sample->xcursor->images[0];
 	wlr_cursor_set_image(sample->cursor, image->buffer, image->width,
-		image->width, image->height, image->hotspot_x, image->hotspot_y);
+		image->width, image->height, image->hotspot_x, image->hotspot_y, 0);
 
 	wlr_cursor_warp(sample->cursor, NULL, sample->cursor->x, sample->cursor->y);
 }
@@ -321,7 +321,7 @@ int main(int argc, char *argv[]) {
 
 	struct wlr_xcursor_image *image = state.xcursor->images[0];
 	wlr_cursor_set_image(state.cursor, image->buffer, image->width,
-		image->width, image->height, image->hotspot_x, image->hotspot_y);
+		image->width, image->height, image->hotspot_x, image->hotspot_y, 0);
 
 	compositor_init(&compositor);
 	if (!wlr_backend_start(compositor.backend)) {

include/wlr/types/wlr_cursor.h

@@ -60,9 +60,22 @@ void wlr_cursor_warp_absolute(struct wlr_cursor *cur,
 void wlr_cursor_move(struct wlr_cursor *cur, struct wlr_input_device *dev,
 	double delta_x, double delta_y);
 
+/**
+ * Set the cursor image. stride is given in bytes. If pixels is NULL, hides the
+ * cursor.
+ *
+ * If scale isn't zero, the image is only set on outputs having the provided
+ * scale.
+ */
 void wlr_cursor_set_image(struct wlr_cursor *cur, const uint8_t *pixels,
 	int32_t stride, uint32_t width, uint32_t height, int32_t hotspot_x,
-	int32_t hotspot_y);
+	int32_t hotspot_y, uint32_t scale);
+
+/**
+ * Set the cursor surface. The surface can be committed to update the cursor
+ * image. The surface position is substracted from the hotspot. A NULL surface
+ * commit hides the cursor.
+ */
 void wlr_cursor_set_surface(struct wlr_cursor *cur, struct wlr_surface *surface,
 	int32_t hotspot_x, int32_t hotspot_y);
 

rootston/cursor.c

@@ -30,7 +30,7 @@ void roots_cursor_destroy(struct roots_cursor *cursor) {
 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);
+		image->width, image->height, image->hotspot_x, image->hotspot_y, 0);
 }
 
 static void roots_cursor_update_position(struct roots_cursor *cursor, uint32_t time) {

rootston/seat.c

@@ -176,6 +176,12 @@ void roots_seat_configure_cursor(struct roots_seat *seat) {
 	}
 }
 
+static void seat_set_xcursor_image(struct roots_seat *seat, struct
+		wlr_xcursor_image *image) {
+	wlr_cursor_set_image(seat->cursor->cursor, image->buffer, image->width,
+		image->width, image->height, image->hotspot_x, image->hotspot_y, 0);
+}
+
 static void roots_seat_init_cursor(struct roots_seat *seat) {
 	seat->cursor = roots_cursor_create(seat);
 	if (!seat->cursor) {
@@ -204,8 +210,7 @@ static void roots_seat_init_cursor(struct roots_seat *seat) {
 	}
 
 	struct wlr_xcursor_image *image = xcursor->images[0];
-	wlr_cursor_set_image(seat->cursor->cursor, image->buffer, image->width,
-		image->width, image->height, image->hotspot_x, image->hotspot_y);
+	seat_set_xcursor_image(seat, image);
 
 	// XXX: xwayland will always have the theme of the last created seat
 	if (seat->input->server->desktop->xwayland != NULL) {
@@ -471,10 +476,10 @@ void roots_seat_remove_device(struct roots_seat *seat,
 }
 
 void roots_seat_configure_xcursor(struct roots_seat *seat) {
-	struct wlr_xcursor *xcursor = get_default_xcursor(seat->cursor->xcursor_theme);
+	struct wlr_xcursor *xcursor =
+		get_default_xcursor(seat->cursor->xcursor_theme);
 	struct wlr_xcursor_image *image = xcursor->images[0];
-	wlr_cursor_set_image(seat->cursor->cursor, image->buffer, image->width,
-		image->width, image->height, image->hotspot_x, image->hotspot_y);
+	seat_set_xcursor_image(seat, image);
 
 	wlr_cursor_warp(seat->cursor->cursor, NULL, seat->cursor->cursor->x,
 		seat->cursor->cursor->y);
@@ -537,12 +542,6 @@ void roots_seat_focus_view(struct roots_seat *seat, struct roots_view *view) {
 	wlr_seat_keyboard_notify_enter(seat->seat, view->wlr_surface);
 }
 
-static void seat_set_xcursor_image(struct roots_seat *seat, struct
-		wlr_xcursor_image *image) {
-	wlr_cursor_set_image(seat->cursor->cursor, image->buffer, image->width,
-		image->width, image->height, image->hotspot_x, image->hotspot_y);
-}
-
 void roots_seat_begin_move(struct roots_seat *seat, struct roots_view *view) {
 	struct roots_cursor *cursor = seat->cursor;
 	cursor->mode = ROOTS_CURSOR_MOVE;

types/wlr_cursor.c

@@ -299,9 +299,14 @@ void wlr_cursor_move(struct wlr_cursor *cur, struct wlr_input_device *dev,
 
 void wlr_cursor_set_image(struct wlr_cursor *cur, const uint8_t *pixels,
 		int32_t stride, uint32_t width, uint32_t height, int32_t hotspot_x,
-		int32_t hotspot_y) {
+		int32_t hotspot_y, uint32_t scale) {
 	struct wlr_cursor_output_cursor *output_cursor;
 	wl_list_for_each(output_cursor, &cur->state->output_cursors, link) {
+		if (scale != 0 &&
+				output_cursor->output_cursor->output->scale != scale) {
+			continue;
+		}
+
 		wlr_output_cursor_set_image(output_cursor->output_cursor, pixels,
 			stride, width, height, hotspot_x, hotspot_y);
 	}