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mutter/clutter/eglx/clutter-stage-egl.c
Neil Roberts 5d6a11e1bf Emit CLUTTER_LEAVE events when the pointer leaves the stage 
Bug 1178 - No enter / leave events on actors when pointer leaves the
           stage window

The patch is mostly thanks to Johan Bilien with small modifications
based on suggestions by Owen Taylor.

The X11 backend now listens for enter and leave notifications. Leave
notifications get translated directly to a CLUTTER_LEAVE
event. Clutter can detect these special events because the source
actor is NULL in which case it sets the source actor to the last known
actor and then sets the last known actor to NULL.

Enter notifications just get translated to CLUTTER_MOTION events which
will cause Clutter to generate an enter event through the usual code
path.
2009-02-16 12:46:36 +00:00

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#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "clutter-backend-egl.h"
#include "clutter-stage-egl.h"
#include "clutter-eglx.h"
#include "../clutter-main.h"
#include "../clutter-feature.h"
#include "../clutter-color.h"
#include "../clutter-util.h"
#include "../clutter-event.h"
#include "../clutter-enum-types.h"
#include "../clutter-private.h"
#include "../clutter-debug.h"
#include "../clutter-units.h"
#include "../clutter-container.h"
#include "../clutter-stage.h"
#include "../clutter-stage-window.h"
static void clutter_stage_window_iface_init (ClutterStageWindowIface *iface);
G_DEFINE_TYPE_WITH_CODE (ClutterStageEGL,
clutter_stage_egl,
CLUTTER_TYPE_STAGE_X11,
G_IMPLEMENT_INTERFACE (CLUTTER_TYPE_STAGE_WINDOW,
clutter_stage_window_iface_init));
static void
clutter_stage_egl_unrealize (ClutterActor *actor)
{
ClutterStageEGL *stage_egl = CLUTTER_STAGE_EGL (actor);
ClutterStageX11 *stage_x11 = CLUTTER_STAGE_X11 (actor);
gboolean was_offscreen;
CLUTTER_MARK();
g_object_get (stage_x11->wrapper, "offscreen", &was_offscreen, NULL);
CLUTTER_ACTOR_CLASS (clutter_stage_egl_parent_class)->unrealize (actor);
clutter_x11_trap_x_errors ();
if (G_UNLIKELY (was_offscreen))
{
/* No support as yet for this */
}
else
{
if (!stage_x11->is_foreign_xwin && stage_x11->xwin != None)
{
XDestroyWindow (stage_x11->xdpy, stage_x11->xwin);
stage_x11->xwin = None;
}
else
stage_x11->xwin = None;
}
if (stage_egl->egl_surface)
{
eglDestroySurface (clutter_eglx_display (), stage_egl->egl_surface);
stage_egl->egl_surface = EGL_NO_SURFACE;
}
XSync (stage_x11->xdpy, False);
clutter_x11_untrap_x_errors ();
CLUTTER_MARK ();
}
static void
clutter_stage_egl_realize (ClutterActor *actor)
{
ClutterStageEGL *stage_egl = CLUTTER_STAGE_EGL (actor);
ClutterStageX11 *stage_x11 = CLUTTER_STAGE_X11 (actor);
ClutterBackendEGL *backend_egl;
ClutterBackendX11 *backend_x11;
EGLConfig configs[2];
EGLint config_count;
EGLBoolean status;
gboolean is_offscreen = FALSE;
CLUTTER_NOTE (BACKEND, "Realizing main stage");
g_object_get (stage_x11->wrapper, "offscreen", &is_offscreen, NULL);
backend_egl = CLUTTER_BACKEND_EGL (clutter_get_default_backend ());
backend_x11 = CLUTTER_BACKEND_X11 (clutter_get_default_backend ());
if (G_LIKELY (!is_offscreen))
{
int c;
int num_configs;
EGLConfig *all_configs;
EGLint cfg_attribs[] = {
EGL_BUFFER_SIZE, EGL_DONT_CARE,
EGL_RED_SIZE, 5,
EGL_GREEN_SIZE, 6,
EGL_BLUE_SIZE, 5,
#ifdef HAVE_COGL_GLES2
EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
#else /* HAVE_COGL_GLES2 */
EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
#endif /* HAVE_COGL_GLES2 */
EGL_NONE
};
status = eglGetConfigs (backend_egl->edpy,
configs,
2,
&config_count);
eglGetConfigs (clutter_eglx_display (), NULL, 0, &num_configs);
all_configs = g_malloc (num_configs * sizeof (EGLConfig));
eglGetConfigs (clutter_eglx_display (),
all_configs,
num_configs,
&num_configs);
for (c = 0; c < num_configs; ++c)
{
EGLint red = -1, green = -1, blue = -1, alpha = -1, stencil = -1;
eglGetConfigAttrib (clutter_eglx_display (),
all_configs[c],
EGL_RED_SIZE, &red);
eglGetConfigAttrib (clutter_eglx_display (),
all_configs[c],
EGL_GREEN_SIZE, &green);
eglGetConfigAttrib (clutter_eglx_display (),
all_configs[c],
EGL_BLUE_SIZE, &blue);
eglGetConfigAttrib (clutter_eglx_display (),
all_configs[c],
EGL_ALPHA_SIZE, &alpha);
eglGetConfigAttrib (clutter_eglx_display (),
all_configs[c],
EGL_STENCIL_SIZE, &stencil);
CLUTTER_NOTE (BACKEND, "EGLConfig == R:%d G:%d B:%d A:%d S:%d \n",
red, green, blue, alpha, stencil);
}
g_free (all_configs);
if (status != EGL_TRUE)
{
g_critical ("eglGetConfigs failed");
goto fail;
}
status = eglChooseConfig (backend_egl->edpy,
cfg_attribs,
configs,
G_N_ELEMENTS (configs),
&config_count);
if (status != EGL_TRUE)
{
g_critical ("eglChooseConfig failed");
goto fail;
}
if (stage_x11->xwin == None)
stage_x11->xwin =
XCreateSimpleWindow (stage_x11->xdpy,
stage_x11->xwin_root,
0, 0,
stage_x11->xwin_width,
stage_x11->xwin_height,
0, 0,
WhitePixel (stage_x11->xdpy,
stage_x11->xscreen));
if (clutter_x11_has_event_retrieval ())
{
if (clutter_x11_has_xinput ())
{
XSelectInput (stage_x11->xdpy, stage_x11->xwin,
StructureNotifyMask |
FocusChangeMask |
ExposureMask |
EnterWindowMask | LeaveWindowMask |
PropertyChangeMask);
#ifdef USE_XINPUT
_clutter_x11_select_events (stage_x11->xwin);
#endif
}
else
XSelectInput (stage_x11->xdpy, stage_x11->xwin,
StructureNotifyMask |
FocusChangeMask |
ExposureMask |
PointerMotionMask |
KeyPressMask | KeyReleaseMask |
ButtonPressMask | ButtonReleaseMask |
EnterWindowMask | LeaveWindowMask |
PropertyChangeMask);
}
/* FIXME, do these in a clutterstage_x11_realise? */
clutter_stage_x11_fix_window_size (stage_x11);
clutter_stage_x11_set_wm_protocols (stage_x11);
if (stage_egl->egl_surface != EGL_NO_SURFACE)
{
eglDestroySurface (backend_egl->edpy, stage_egl->egl_surface);
stage_egl->egl_surface = EGL_NO_SURFACE;
}
stage_egl->egl_surface =
eglCreateWindowSurface (backend_egl->edpy,
configs[0],
(NativeWindowType) stage_x11->xwin,
NULL);
if (stage_egl->egl_surface == EGL_NO_SURFACE)
{
g_critical ("Unable to create an EGL surface");
goto fail;
}
if (G_UNLIKELY (backend_egl->egl_context == None))
{
#ifdef HAVE_COGL_GLES2
static const EGLint attribs[3]
= { EGL_CONTEXT_CLIENT_VERSION, 2, EGL_NONE };
backend_egl->egl_context = eglCreateContext (backend_egl->edpy,
configs[0],
EGL_NO_CONTEXT,
attribs);
#else
/* Seems some GLES implementations 1.x do not like attribs... */
backend_egl->egl_context = eglCreateContext (backend_egl->edpy,
configs[0],
EGL_NO_CONTEXT,
NULL);
#endif
if (backend_egl->egl_context == EGL_NO_CONTEXT)
{
g_critical ("Unable to create a suitable EGL context");
goto fail;
}
CLUTTER_NOTE (GL, "Created EGL Context");
}
CLUTTER_ACTOR_SET_FLAGS (actor, CLUTTER_ACTOR_REALIZED);
}
else
{
g_critical ("EGLX Backend does not support offscreen rendering");
goto fail;
}
/* we need to chain up to the X11 stage implementation in order to
* set the window state in case we set it before realizing the stage
*/
CLUTTER_ACTOR_CLASS (clutter_stage_egl_parent_class)->realize (actor);
return;
fail:
CLUTTER_ACTOR_UNSET_FLAGS (actor, CLUTTER_ACTOR_REALIZED);
}
static void
clutter_stage_egl_dispose (GObject *gobject)
{
ClutterStageEGL *stage_egl = CLUTTER_STAGE_EGL (gobject);
ClutterStageX11 *stage_x11 = CLUTTER_STAGE_X11 (gobject);
if (stage_x11->xwin)
clutter_actor_unrealize (CLUTTER_ACTOR (stage_egl));
G_OBJECT_CLASS (clutter_stage_egl_parent_class)->dispose (gobject);
}
static void
clutter_stage_window_iface_init (ClutterStageWindowIface *iface)
{
/* the rest is inherited from ClutterStageX11 */
}
static void
clutter_stage_egl_class_init (ClutterStageEGLClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
ClutterActorClass *actor_class = CLUTTER_ACTOR_CLASS (klass);
gobject_class->dispose = clutter_stage_egl_dispose;
actor_class->realize = clutter_stage_egl_realize;
actor_class->unrealize = clutter_stage_egl_unrealize;
}
static void
clutter_stage_egl_init (ClutterStageEGL *stage)
{
}
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