[mutter/wip/wayland-display: 9/62] wayland: Add an actor for the cursor
- From: Giovanni Campagna <gcampagna src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [mutter/wip/wayland-display: 9/62] wayland: Add an actor for the cursor
- Date: Thu, 8 Aug 2013 08:28:52 +0000 (UTC)
commit 83d1350395e64cce4b7c84c28667411d772f68cd
Author: Neil Roberts <neil linux intel com>
Date: Wed Jan 18 23:03:23 2012 +0000
wayland: Add an actor for the cursor
When running Mutter under Cogl's KMS backend no cursor will be
provided so instead this makes it so the cursor will be painted as a
CoglTexture that gets moved in response to mouse motion events. The
painting is done in a subclass of ClutterStage so that we can
guarantee that the cursor will be painted on top of everything else.
This patch adds support for the set_cursor method on the pointer
interface so that clients can change the cursor image.
The set_pointer method sets a surface and a hotspot position to use
for the cursor image. The surface's buffer is converted to a
CoglTexture and attached to a pipeline to paint directly via Cogl. If
a new buffer is attached to the surface the image will be updated. The
cursor reverts back to the default image whenever to the pointer focus
is moved off of any surface.
The image for the pointer is taken from X. It gets installed into
a fixed data location for mutter.
Makefile.am | 2 +-
configure.ac | 1 +
data/Makefile.am | 7 +
data/left_ptr.png | Bin 0 -> 736 bytes
src/Makefile.am | 4 +-
src/wayland/meta-wayland-seat.c | 65 +++++++---
src/wayland/meta-wayland-seat.h | 3 +
src/wayland/meta-wayland-stage.c | 243 ++++++++++++++++++++++++++++++++++++++
src/wayland/meta-wayland-stage.h | 111 +++++++++++++++++
src/wayland/meta-wayland.c | 12 ++-
10 files changed, 426 insertions(+), 22 deletions(-)
---
diff --git a/Makefile.am b/Makefile.am
index 56c7c88..1cee7f2 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -1,5 +1,5 @@
-SUBDIRS=src po doc
+SUBDIRS=src data po doc
EXTRA_DIST = HACKING MAINTAINERS rationales.txt
diff --git a/configure.ac b/configure.ac
index 92d9695..52c2871 100644
--- a/configure.ac
+++ b/configure.ac
@@ -511,6 +511,7 @@ src/libmutter.pc
src/mutter-plugins.pc
src/tools/Makefile
src/compositor/plugins/Makefile
+data/Makefile
po/Makefile.in
])
diff --git a/data/Makefile.am b/data/Makefile.am
new file mode 100644
index 0000000..0fbff45
--- /dev/null
+++ b/data/Makefile.am
@@ -0,0 +1,7 @@
+defaultcursordir = $(datadir)/mutter/cursors
+
+dist_defaultcursor_DATA =
+
+if HAVE_WAYLAND
+dist_defaultcursor_DATA += left_ptr.png
+endif
diff --git a/data/left_ptr.png b/data/left_ptr.png
new file mode 100644
index 0000000..d3818cc
Binary files /dev/null and b/data/left_ptr.png differ
diff --git a/src/Makefile.am b/src/Makefile.am
index a12adaf..dd45d7e 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -185,7 +185,9 @@ libmutter_la_SOURCES += \
wayland/meta-wayland-pointer.c \
wayland/meta-wayland-pointer.h \
wayland/meta-wayland-seat.c \
- wayland/meta-wayland-seat.h
+ wayland/meta-wayland-seat.h \
+ wayland/meta-wayland-stage.h \
+ wayland/meta-wayland-stage.c
endif
libmutter_la_LDFLAGS = -no-undefined
diff --git a/src/wayland/meta-wayland-seat.c b/src/wayland/meta-wayland-seat.c
index 1921a87..0b114db 100644
--- a/src/wayland/meta-wayland-seat.c
+++ b/src/wayland/meta-wayland-seat.c
@@ -21,6 +21,7 @@
#include "config.h"
+#include <cogl/cogl-wayland-server.h>
#include <clutter/clutter.h>
#include <clutter/wayland/clutter-wayland-compositor.h>
#include <clutter/wayland/clutter-wayland-surface.h>
@@ -34,6 +35,7 @@
#include "meta-wayland-data-device.h"
#include "meta-window-actor-private.h"
#include "meta/meta-shaped-texture.h"
+#include "meta-wayland-stage.h"
#define DEFAULT_AXIS_STEP_DISTANCE wl_fixed_from_int (10)
@@ -72,23 +74,41 @@ transform_stage_point_fixed (MetaWaylandSurface *surface,
static void
pointer_unmap_sprite (MetaWaylandSeat *seat)
{
- if (seat->sprite)
+ if (seat->current_stage)
{
- if (seat->sprite->window)
- {
- GObject *window_actor_object =
- meta_window_get_compositor_private (seat->sprite->window);
- ClutterActor *window_actor = CLUTTER_ACTOR (window_actor_object);
-
- if (window_actor)
- clutter_actor_hide (window_actor);
- }
+ MetaWaylandStage *stage = META_WAYLAND_STAGE (seat->current_stage);
+ meta_wayland_stage_set_invisible_cursor (stage);
+ }
+ if (seat->sprite)
+ {
wl_list_remove (&seat->sprite_destroy_listener.link);
seat->sprite = NULL;
}
}
+void
+meta_wayland_seat_update_sprite (MetaWaylandSeat *seat)
+{
+ if (seat->current_stage)
+ {
+ MetaWaylandStage *stage = META_WAYLAND_STAGE (seat->current_stage);
+ ClutterBackend *backend = clutter_get_default_backend ();
+ CoglContext *context = clutter_backend_get_cogl_context (backend);
+ CoglTexture2D *texture =
+ cogl_wayland_texture_2d_new_from_buffer (context,
+ seat->sprite->buffer,
+ NULL);
+
+ meta_wayland_stage_set_cursor_from_texture (stage,
+ COGL_TEXTURE (texture),
+ seat->hotspot_x,
+ seat->hotspot_y);
+
+ cogl_object_unref (texture);
+ }
+}
+
static void
pointer_set_cursor (struct wl_client *client,
struct wl_resource *resource,
@@ -108,17 +128,24 @@ pointer_set_cursor (struct wl_client *client,
if (seat->pointer.focus_serial - serial > G_MAXUINT32 / 2)
return;
- pointer_unmap_sprite (seat);
+ seat->hotspot_x = x;
+ seat->hotspot_y = y;
- if (!surface)
- return;
+ if (seat->sprite != surface)
+ {
+ pointer_unmap_sprite (seat);
- wl_signal_add (&surface->resource.destroy_signal,
- &seat->sprite_destroy_listener);
+ if (!surface)
+ return;
- seat->sprite = surface;
- seat->hotspot_x = x;
- seat->hotspot_y = y;
+ wl_signal_add (&surface->resource.destroy_signal,
+ &seat->sprite_destroy_listener);
+
+ seat->sprite = surface;
+
+ if (seat->sprite->buffer)
+ meta_wayland_seat_update_sprite (seat);
+ }
}
static const struct wl_pointer_interface
@@ -227,7 +254,7 @@ pointer_handle_sprite_destroy (struct wl_listener *listener, void *data)
MetaWaylandSeat *seat =
wl_container_of (listener, seat, sprite_destroy_listener);
- seat->sprite = NULL;
+ pointer_unmap_sprite (seat);
}
MetaWaylandSeat *
diff --git a/src/wayland/meta-wayland-seat.h b/src/wayland/meta-wayland-seat.h
index ee56778..89bcd76 100644
--- a/src/wayland/meta-wayland-seat.h
+++ b/src/wayland/meta-wayland-seat.h
@@ -42,6 +42,9 @@ meta_wayland_seat_repick (MetaWaylandSeat *seat,
ClutterActor *actor);
void
+meta_wayland_seat_update_sprite (MetaWaylandSeat *seat);
+
+void
meta_wayland_seat_free (MetaWaylandSeat *seat);
#endif /* __META_WAYLAND_SEAT_H__ */
diff --git a/src/wayland/meta-wayland-stage.c b/src/wayland/meta-wayland-stage.c
new file mode 100644
index 0000000..c303608
--- /dev/null
+++ b/src/wayland/meta-wayland-stage.c
@@ -0,0 +1,243 @@
+/*
+ * Wayland Support
+ *
+ * Copyright (C) 2012 Intel Corporation
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.
+ */
+
+#include <config.h>
+
+#include <clutter/clutter.h>
+#include <gdk-pixbuf/gdk-pixbuf.h>
+#include <cogl/cogl-wayland-server.h>
+
+#include "meta-wayland-stage.h"
+#include "meta/meta-window-actor.h"
+#include "meta/meta-shaped-texture.h"
+
+#define META_WAYLAND_DEFAULT_CURSOR_HOTSPOT_X 7
+#define META_WAYLAND_DEFAULT_CURSOR_HOTSPOT_Y 4
+
+G_DEFINE_TYPE (MetaWaylandStage, meta_wayland_stage, CLUTTER_TYPE_STAGE);
+
+static void
+meta_wayland_stage_finalize (GObject *object)
+{
+ MetaWaylandStage *self = (MetaWaylandStage *) object;
+
+ cogl_object_unref (self->default_cursor_pipeline);
+ cogl_object_unref (self->texture_cursor_pipeline);
+
+ G_OBJECT_CLASS (meta_wayland_stage_parent_class)->finalize (object);
+}
+
+static void
+get_cursor_draw_position (MetaWaylandStage *self,
+ cairo_rectangle_int_t *rect)
+{
+ rect->x = self->cursor_x - self->cursor_hotspot_x;
+ rect->y = self->cursor_y - self->cursor_hotspot_y;
+ rect->width = self->cursor_width;
+ rect->height = self->cursor_height;
+}
+
+static void
+draw_cursor_pipeline (MetaWaylandStage *self,
+ CoglPipeline *pipeline)
+{
+ cairo_rectangle_int_t rect;
+
+ get_cursor_draw_position (self, &rect);
+
+ cogl_framebuffer_draw_rectangle (cogl_get_draw_framebuffer (),
+ pipeline,
+ rect.x, rect.y,
+ rect.x + rect.width,
+ rect.y + rect.height);
+
+ self->has_last_cursor_position = TRUE;
+ self->last_cursor_position = rect;
+}
+
+static void
+meta_wayland_stage_paint (ClutterActor *actor)
+{
+ MetaWaylandStage *self = META_WAYLAND_STAGE (actor);
+
+ CLUTTER_ACTOR_CLASS (meta_wayland_stage_parent_class)->paint (actor);
+
+ /* Make sure the cursor is always painted on top of all of the other
+ actors */
+
+ switch (self->cursor_type)
+ {
+ case META_WAYLAND_STAGE_CURSOR_INVISIBLE:
+ break;
+
+ case META_WAYLAND_STAGE_CURSOR_DEFAULT:
+ draw_cursor_pipeline (self, self->default_cursor_pipeline);
+ break;
+
+ case META_WAYLAND_STAGE_CURSOR_TEXTURE:
+ draw_cursor_pipeline (self, self->texture_cursor_pipeline);
+ break;
+ }
+}
+
+static void
+update_cursor_position (MetaWaylandStage *self)
+{
+ cairo_rectangle_int_t rect;
+
+ if (self->has_last_cursor_position)
+ {
+ clutter_actor_queue_redraw_with_clip (CLUTTER_ACTOR (self),
+ &self->last_cursor_position);
+ self->has_last_cursor_position = FALSE;
+ }
+
+ get_cursor_draw_position (self, &rect);
+ if (rect.width != 0 && rect.height != 0)
+ clutter_actor_queue_redraw_with_clip (CLUTTER_ACTOR (self), &rect);
+}
+
+static void
+meta_wayland_stage_class_init (MetaWaylandStageClass *klass)
+{
+ GObjectClass *gobject_class = (GObjectClass *) klass;
+ ClutterActorClass *actor_class = (ClutterActorClass *) klass;
+
+ gobject_class->finalize = meta_wayland_stage_finalize;
+
+ actor_class->paint = meta_wayland_stage_paint;
+}
+
+static void
+load_default_cursor_pipeline (MetaWaylandStage *self)
+{
+ CoglContext *context =
+ clutter_backend_get_cogl_context (clutter_get_default_backend ());
+ CoglTexture *texture;
+ CoglError *error = NULL;
+ char *filename;
+
+ filename = g_build_filename (MUTTER_DATADIR,
+ "mutter/cursors/left_ptr.png",
+ NULL);
+
+ texture = cogl_texture_new_from_file (filename,
+ COGL_TEXTURE_NONE,
+ COGL_PIXEL_FORMAT_ANY,
+ &error);
+
+ g_free (filename);
+
+ self->default_cursor_pipeline = cogl_pipeline_new (context);
+ cogl_pipeline_set_layer_filters (self->default_cursor_pipeline,
+ 0, /* layer */
+ COGL_PIPELINE_FILTER_NEAREST,
+ COGL_PIPELINE_FILTER_NEAREST);
+
+ if (texture == NULL)
+ {
+ g_warning ("Failed to load default cursor: %s",
+ error->message);
+ cogl_error_free (error);
+ }
+ else
+ {
+ self->default_cursor_width = cogl_texture_get_width (texture);
+ self->default_cursor_height = cogl_texture_get_height (texture);
+
+ cogl_pipeline_set_layer_texture (self->default_cursor_pipeline,
+ 0, /* layer */
+ texture);
+ cogl_object_unref (texture);
+ }
+}
+
+static void
+meta_wayland_stage_init (MetaWaylandStage *self)
+{
+ load_default_cursor_pipeline (self);
+
+ self->texture_cursor_pipeline =
+ cogl_pipeline_copy (self->default_cursor_pipeline);
+
+ meta_wayland_stage_set_default_cursor (self);
+}
+
+ClutterActor *
+meta_wayland_stage_new (void)
+{
+ return g_object_new (META_WAYLAND_TYPE_STAGE,
+ "cursor-visible", FALSE,
+ NULL);
+}
+
+void
+meta_wayland_stage_set_cursor_position (MetaWaylandStage *self,
+ int x,
+ int y)
+{
+ self->cursor_x = x;
+ self->cursor_y = y;
+ update_cursor_position (self);
+}
+
+void
+meta_wayland_stage_set_cursor_from_texture (MetaWaylandStage *self,
+ CoglTexture *texture,
+ int hotspot_x,
+ int hotspot_y)
+{
+ CoglPipeline *pipeline;
+
+ self->cursor_hotspot_x = hotspot_x;
+ self->cursor_hotspot_y = hotspot_y;
+ self->cursor_type = META_WAYLAND_STAGE_CURSOR_TEXTURE;
+
+ pipeline = cogl_pipeline_copy (self->texture_cursor_pipeline);
+ cogl_pipeline_set_layer_texture (pipeline, 0, texture);
+ cogl_object_unref (self->texture_cursor_pipeline);
+ self->texture_cursor_pipeline = pipeline;
+
+ self->cursor_width = cogl_texture_get_width (texture);
+ self->cursor_height = cogl_texture_get_height (texture);
+
+ update_cursor_position (self);
+}
+
+void
+meta_wayland_stage_set_invisible_cursor (MetaWaylandStage *self)
+{
+ self->cursor_type = META_WAYLAND_STAGE_CURSOR_INVISIBLE;
+ self->cursor_width = 0;
+ self->cursor_height = 0;
+ update_cursor_position (self);
+}
+
+void
+meta_wayland_stage_set_default_cursor (MetaWaylandStage *self)
+{
+ self->cursor_type = META_WAYLAND_STAGE_CURSOR_DEFAULT;
+ self->cursor_hotspot_x = META_WAYLAND_DEFAULT_CURSOR_HOTSPOT_X;
+ self->cursor_hotspot_y = META_WAYLAND_DEFAULT_CURSOR_HOTSPOT_Y;
+ self->cursor_width = self->default_cursor_width;
+ self->cursor_height = self->default_cursor_height;
+ update_cursor_position (self);
+}
diff --git a/src/wayland/meta-wayland-stage.h b/src/wayland/meta-wayland-stage.h
new file mode 100644
index 0000000..d25f270
--- /dev/null
+++ b/src/wayland/meta-wayland-stage.h
@@ -0,0 +1,111 @@
+/*
+ * Copyright (C) 2012 Intel Corporation
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.
+ */
+
+#ifndef META_WAYLAND_STAGE_H
+#define META_WAYLAND_STAGE_H
+
+#include <clutter/clutter.h>
+#include <wayland-server.h>
+
+#include "window-private.h"
+
+G_BEGIN_DECLS
+
+#define META_WAYLAND_TYPE_STAGE \
+ (meta_wayland_stage_get_type())
+#define META_WAYLAND_STAGE(obj) \
+ (G_TYPE_CHECK_INSTANCE_CAST ((obj), \
+ META_WAYLAND_TYPE_STAGE, \
+ MetaWaylandStage))
+#define META_WAYLAND_STAGE_CLASS(klass) \
+ (G_TYPE_CHECK_CLASS_CAST ((klass), \
+ META_WAYLAND_TYPE_STAGE, \
+ MetaWaylandStageClass))
+#define META_WAYLAND_IS_STAGE(obj) \
+ (G_TYPE_CHECK_INSTANCE_TYPE ((obj), \
+ META_WAYLAND_TYPE_STAGE))
+#define META_WAYLAND_IS_STAGE_CLASS(klass) \
+ (G_TYPE_CHECK_CLASS_TYPE ((klass), \
+ META_WAYLAND_TYPE_STAGE))
+#define META_WAYLAND_STAGE_GET_CLASS(obj) \
+ (G_TYPE_INSTANCE_GET_CLASS ((obj), \
+ META_WAYLAND_STAGE, \
+ MetaWaylandStageClass))
+
+typedef struct _MetaWaylandStage MetaWaylandStage;
+typedef struct _MetaWaylandStageClass MetaWaylandStageClass;
+
+struct _MetaWaylandStageClass
+{
+ ClutterStageClass parent_class;
+};
+
+struct _MetaWaylandStage
+{
+ ClutterStage parent;
+
+ /* A pipeline containing the cursor texture that will be used when
+ the cursor is not over a surface */
+ CoglPipeline *default_cursor_pipeline;
+ int default_cursor_width;
+ int default_cursor_height;
+
+ CoglPipeline *texture_cursor_pipeline;
+
+ int cursor_x;
+ int cursor_y;
+ int cursor_width;
+ int cursor_height;
+ int cursor_hotspot_x;
+ int cursor_hotspot_y;
+
+ enum
+ {
+ /* No cursor will be drawn */
+ META_WAYLAND_STAGE_CURSOR_INVISIBLE,
+ /* The cursor will be drawn from our default cursor image */
+ META_WAYLAND_STAGE_CURSOR_DEFAULT,
+ /* The cursor will be drawn using a custom texture */
+ META_WAYLAND_STAGE_CURSOR_TEXTURE
+ } cursor_type;
+
+ gboolean has_last_cursor_position;
+ cairo_rectangle_int_t last_cursor_position;
+};
+
+GType meta_wayland_stage_get_type (void) G_GNUC_CONST;
+
+ClutterActor *meta_wayland_stage_new (void);
+
+void meta_wayland_stage_set_cursor_position (MetaWaylandStage *stage,
+ int x,
+ int y);
+
+void meta_wayland_stage_set_default_cursor (MetaWaylandStage *self);
+
+void meta_wayland_stage_set_cursor_from_texture (MetaWaylandStage *self,
+ CoglTexture *texture,
+ int hotspot_x,
+ int hotspot_y);
+
+void meta_wayland_stage_set_invisible_cursor (MetaWaylandStage *self);
+
+G_END_DECLS
+
+#endif /* META_WAYLAND_STAGE_H */
diff --git a/src/wayland/meta-wayland.c b/src/wayland/meta-wayland.c
index 6be4dc4..df8c971 100644
--- a/src/wayland/meta-wayland.c
+++ b/src/wayland/meta-wayland.c
@@ -43,6 +43,7 @@
#include "xserver-server-protocol.h"
#include "meta-wayland-private.h"
+#include "meta-wayland-stage.h"
#include "meta-window-actor-private.h"
#include "meta-wayland-seat.h"
#include "meta-wayland-keyboard.h"
@@ -325,6 +326,8 @@ meta_wayland_surface_commit (struct wl_client *client,
(buffer->width != rect.width || buffer->height != rect.height))
meta_window_resize (surface->window, FALSE, buffer->width, buffer->height);
}
+ else if (surface == compositor->seat->sprite)
+ meta_wayland_seat_update_sprite (compositor->seat);
wl_signal_add (&surface->buffer->resource.destroy_signal,
&surface->buffer_destroy_listener);
@@ -1312,6 +1315,13 @@ event_cb (ClutterActor *stage,
}
}
+ meta_wayland_stage_set_cursor_position (META_WAYLAND_STAGE (stage),
+ wl_fixed_to_int (pointer->x),
+ wl_fixed_to_int (pointer->y));
+
+ if (pointer->current == NULL)
+ meta_wayland_stage_set_default_cursor (META_WAYLAND_STAGE (stage));
+
display = meta_get_display ();
if (!display)
return FALSE;
@@ -1507,7 +1517,7 @@ meta_wayland_init (void)
if (clutter_init (NULL, NULL) != CLUTTER_INIT_SUCCESS)
g_error ("Failed to initialize Clutter");
- compositor->stage = clutter_stage_new ();
+ compositor->stage = meta_wayland_stage_new ();
clutter_stage_set_user_resizable (CLUTTER_STAGE (compositor->stage), FALSE);
g_signal_connect_after (compositor->stage, "paint",
G_CALLBACK (paint_finished_cb), compositor);
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