6988744db7
Instead of using ClutterActor for the base class of the Stage
implementation we should extend the StageWindow interface with
the required bits (geometry, realization) and use a simple object
class.
This require a wee bit of changes across Backend, Stage and
StageWindow, even though it's mostly re-shuffling.
First of all, StageWindow should get new virtual functions:
* geometry:
- resize()
- get_geometry()
* realization
- realize()
- unrealize()
This covers all the bits that we use from ClutterActor currently
inside the stage implementations.
The ClutterBackend::create_stage() virtual function should create
a StageWindow, and not an Actor (it should always have been; the
fact that it returned an Actor was a leak of the black magic going
on underneath). Since we never guaranteed ABI compatibility for
the Backend class, this is not a problem.
Internally to ClutterStage we can finally drop the shenanigans of
setting/unsetting actor flags on the implementation: if the realization
succeeds, for instance, we set the REALIZED flag on the Stage and
we're done.
As an initial proof of concept, the X11 and GLX stage implementations
have been ported to the New World Order(tm) and show no regressions.
298 lines
9.4 KiB
C
298 lines
9.4 KiB
C
/* Clutter.
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* An OpenGL based 'interactive canvas' library.
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* Authored By Matthew Allum <mallum@openedhand.com>
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* Copyright (C) 2006-2007 OpenedHand
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "clutter-backend-glx.h"
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#include "clutter-stage-glx.h"
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#include "clutter-glx.h"
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#include "../clutter-main.h"
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#include "../clutter-feature.h"
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#include "../clutter-color.h"
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#include "../clutter-util.h"
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#include "../clutter-event.h"
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#include "../clutter-enum-types.h"
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#include "../clutter-private.h"
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#include "../clutter-debug.h"
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#include "../clutter-units.h"
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#include "../clutter-shader.h"
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#include "../clutter-group.h"
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#include "../clutter-container.h"
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#include "../clutter-stage.h"
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#include "../clutter-stage-window.h"
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#include "cogl/cogl.h"
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#include <GL/glx.h>
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#include <GL/gl.h>
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static void clutter_stage_window_iface_init (ClutterStageWindowIface *iface);
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static ClutterStageWindowIface *clutter_stage_glx_parent_iface = NULL;
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G_DEFINE_TYPE_WITH_CODE (ClutterStageGLX,
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clutter_stage_glx,
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CLUTTER_TYPE_STAGE_X11,
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G_IMPLEMENT_INTERFACE (CLUTTER_TYPE_STAGE_WINDOW,
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clutter_stage_window_iface_init));
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static void
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clutter_stage_glx_unrealize (ClutterStageWindow *stage_window)
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{
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ClutterStageX11 *stage_x11 = CLUTTER_STAGE_X11 (stage_window);
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ClutterStageGLX *stage_glx = CLUTTER_STAGE_GLX (stage_window);
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gboolean was_offscreen;
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/* Note unrealize should free up any backend stage related resources */
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CLUTTER_NOTE (BACKEND, "Unrealizing stage");
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g_object_get (stage_x11->wrapper, "offscreen", &was_offscreen, NULL);
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clutter_x11_trap_x_errors ();
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if (G_UNLIKELY (was_offscreen))
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{
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if (stage_glx->glxpixmap)
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{
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glXDestroyGLXPixmap (stage_x11->xdpy,stage_glx->glxpixmap);
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stage_glx->glxpixmap = None;
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}
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if (stage_x11->xpixmap)
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{
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XFreePixmap (stage_x11->xdpy, stage_x11->xpixmap);
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stage_x11->xpixmap = None;
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}
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}
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else
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{
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if (!stage_x11->is_foreign_xwin && stage_x11->xwin != None)
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{
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XDestroyWindow (stage_x11->xdpy, stage_x11->xwin);
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stage_x11->xwin = None;
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}
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else
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stage_x11->xwin = None;
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}
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if (stage_x11->xvisinfo != None)
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{
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XFree (stage_x11->xvisinfo);
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stage_x11->xvisinfo = None;
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}
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XSync (stage_x11->xdpy, False);
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clutter_x11_untrap_x_errors ();
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CLUTTER_MARK ();
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}
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static gboolean
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clutter_stage_glx_realize (ClutterStageWindow *stage_window)
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{
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ClutterStageX11 *stage_x11 = CLUTTER_STAGE_X11 (stage_window);
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ClutterStageGLX *stage_glx = CLUTTER_STAGE_GLX (stage_window);
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ClutterBackend *backend;
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ClutterBackendGLX *backend_glx;
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ClutterBackendX11 *backend_x11;
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gboolean is_offscreen;
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CLUTTER_NOTE (ACTOR, "Realizing stage '%s' [%p]",
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G_OBJECT_TYPE_NAME (stage_window),
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stage_window);
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g_object_get (stage_x11->wrapper, "offscreen", &is_offscreen, NULL);
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backend = clutter_get_default_backend ();
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backend_glx = CLUTTER_BACKEND_GLX (backend);
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backend_x11 = CLUTTER_BACKEND_X11 (backend);
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if (G_LIKELY (!is_offscreen))
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{
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GError *error;
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stage_x11->xvisinfo =
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clutter_backend_x11_get_visual_info (backend_x11, FALSE);
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if (stage_x11->xvisinfo == None)
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{
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g_critical ("Unable to find suitable GL visual.");
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return FALSE;
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}
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if (stage_x11->xwin == None)
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{
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XSetWindowAttributes xattr;
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unsigned long mask;
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CLUTTER_NOTE (MISC, "Creating stage X window");
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/* window attributes */
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xattr.background_pixel = WhitePixel (stage_x11->xdpy,
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stage_x11->xscreen);
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xattr.border_pixel = 0;
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xattr.colormap = XCreateColormap (stage_x11->xdpy,
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stage_x11->xwin_root,
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stage_x11->xvisinfo->visual,
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AllocNone);
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mask = CWBorderPixel | CWColormap;
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stage_x11->xwin = XCreateWindow (stage_x11->xdpy,
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stage_x11->xwin_root,
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0, 0,
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stage_x11->xwin_width,
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stage_x11->xwin_height,
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0,
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stage_x11->xvisinfo->depth,
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InputOutput,
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stage_x11->xvisinfo->visual,
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mask, &xattr);
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}
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if (clutter_x11_has_event_retrieval())
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{
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if (clutter_x11_has_xinput())
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{
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XSelectInput (stage_x11->xdpy, stage_x11->xwin,
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StructureNotifyMask |
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FocusChangeMask |
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ExposureMask |
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KeyPressMask | KeyReleaseMask |
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EnterWindowMask | LeaveWindowMask |
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PropertyChangeMask);
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#ifdef HAVE_XINPUT
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_clutter_x11_select_events (stage_x11->xwin);
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#endif
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}
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else
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XSelectInput (stage_x11->xdpy, stage_x11->xwin,
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StructureNotifyMask |
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FocusChangeMask |
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ExposureMask |
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PointerMotionMask |
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KeyPressMask | KeyReleaseMask |
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ButtonPressMask | ButtonReleaseMask |
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EnterWindowMask | LeaveWindowMask |
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PropertyChangeMask);
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}
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/* no user resize.. */
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clutter_stage_x11_fix_window_size (stage_x11, -1, -1);
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clutter_stage_x11_set_wm_protocols (stage_x11);
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/* ask for a context; a no-op, if a context already exists */
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error = NULL;
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_clutter_backend_create_context (backend, FALSE, &error);
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if (error)
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{
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g_critical ("Unable to realize stage: %s", error->message);
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g_error_free (error);
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return FALSE;
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}
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CLUTTER_NOTE (BACKEND, "Successfully realized stage");
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}
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else
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{
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GError *error;
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if (stage_x11->xvisinfo != None)
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{
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XFree (stage_x11->xvisinfo);
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stage_x11->xvisinfo = None;
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}
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stage_x11->xvisinfo =
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clutter_backend_x11_get_visual_info (backend_x11, TRUE);
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if (stage_x11->xvisinfo == None)
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{
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g_critical ("Unable to find suitable GL visual.");
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return FALSE;
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}
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stage_x11->xpixmap = XCreatePixmap (stage_x11->xdpy,
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stage_x11->xwin_root,
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stage_x11->xwin_width,
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stage_x11->xwin_height,
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DefaultDepth (stage_x11->xdpy,
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stage_x11->xscreen));
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stage_glx->glxpixmap = glXCreateGLXPixmap (stage_x11->xdpy,
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stage_x11->xvisinfo,
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stage_x11->xpixmap);
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/* ask for a context; a no-op, if a context already exists
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*
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* FIXME: we probably need a seperate offscreen context here
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* - though it likely makes most sense to drop offscreen stages
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* and rely on FBO's instead and GLXPixmaps seems mostly broken
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* anyway..
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*/
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error = NULL;
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_clutter_backend_create_context (backend, TRUE, &error);
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if (error)
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{
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g_critical ("Unable to realize stage: %s", error->message);
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g_error_free (error);
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return FALSE;
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}
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CLUTTER_NOTE (BACKEND, "Successfully realized stage");
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}
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/* chain up to the StageX11 implementation */
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return clutter_stage_glx_parent_iface->realize (stage_window);
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}
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static void
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clutter_stage_glx_dispose (GObject *gobject)
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{
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G_OBJECT_CLASS (clutter_stage_glx_parent_class)->dispose (gobject);
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}
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static void
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clutter_stage_glx_class_init (ClutterStageGLXClass *klass)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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gobject_class->dispose = clutter_stage_glx_dispose;
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}
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static void
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clutter_stage_glx_init (ClutterStageGLX *stage)
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{
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}
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static void
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clutter_stage_window_iface_init (ClutterStageWindowIface *iface)
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{
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clutter_stage_glx_parent_iface = g_type_interface_peek_parent (iface);
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iface->realize = clutter_stage_glx_realize;
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iface->unrealize = clutter_stage_glx_unrealize;
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/* the rest is inherited from ClutterStageX11 */
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}
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