/* * Clutter. * * An OpenGL based 'interactive canvas' library. * * Authored By Matthew Allum * * Copyright (C) 2006 OpenedHand * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library 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 * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. */ /** * SECTION:clutter-actor * @short_description: Base abstract class for all visual stage actors. * * #ClutterActor is a base abstract class for all visual elements on the * stage. Every object that must appear on the main #ClutterStage must also * be a #ClutterActor, either by using one of the classes provided by * Clutter, or by implementing a new #ClutterActor subclass. */ #include "config.h" #include "clutter-actor.h" #include "clutter-container.h" #include "clutter-main.h" #include "clutter-enum-types.h" #include "clutter-marshal.h" #include "clutter-private.h" #include "clutter-debug.h" #include "clutter-units.h" #include "cogl.h" G_DEFINE_ABSTRACT_TYPE (ClutterActor, clutter_actor, G_TYPE_INITIALLY_UNOWNED); static guint32 __id = 0; #define CLUTTER_ACTOR_GET_PRIVATE(obj) \ (G_TYPE_INSTANCE_GET_PRIVATE ((obj), CLUTTER_TYPE_ACTOR, ClutterActorPrivate)) struct _ClutterActorPrivate { ClutterActorBox coords; ClutterGeometry clip; /* FIXME: Should be Units */ guint has_clip : 1; ClutterFixed rxang, ryang, rzang; /* Rotation*/ gint rzx, rzy, rxy, rxz, ryx, ryz; /* FIXME: Should be Units */ gint z; guint8 opacity; ClutterActor *parent_actor; gchar *name; ClutterFixed scale_x, scale_y; guint32 id; /* Unique ID */ }; enum { PROP_0, PROP_X, PROP_Y, PROP_WIDTH, PROP_HEIGHT, PROP_CLIP, PROP_HAS_CLIP, PROP_OPACITY, PROP_NAME, PROP_VISIBLE }; enum { SHOW, HIDE, DESTROY, PARENT_SET, LAST_SIGNAL }; static guint actor_signals[LAST_SIGNAL] = { 0, }; static gboolean redraw_update_idle (gpointer data) { ClutterMainContext *ctx = CLUTTER_CONTEXT(); if (ctx->update_idle) { g_source_remove (ctx->update_idle); ctx->update_idle = 0; } clutter_redraw (); return FALSE; } static void clutter_actor_real_show (ClutterActor *self) { if (!CLUTTER_ACTOR_IS_VISIBLE (self)) { if (!CLUTTER_ACTOR_IS_REALIZED (self)) clutter_actor_realize (self); CLUTTER_ACTOR_SET_FLAGS (self, CLUTTER_ACTOR_MAPPED); if (CLUTTER_ACTOR_IS_VISIBLE (self)) clutter_actor_queue_redraw (self); } } /** * clutter_actor_show * @self: A #ClutterActor * * Flags a clutter actor to be displayed. An actor not shown will not * appear on the display. **/ void clutter_actor_show (ClutterActor *self) { if (!CLUTTER_ACTOR_IS_VISIBLE (self)) { g_object_ref (self); g_signal_emit (self, actor_signals[SHOW], 0); g_object_notify (G_OBJECT (self), "visible"); g_object_unref (self); } } /** * clutter_actor_show_all: * @self: a #ClutterActor * * Recursively show an actor, and any child actor if @self has * child actors. * * Since: 0.2 */ void clutter_actor_show_all (ClutterActor *self) { ClutterActorClass *klass; g_return_if_fail (CLUTTER_IS_ACTOR (self)); klass = CLUTTER_ACTOR_GET_CLASS (self); if (klass->show_all) klass->show_all (self); } void clutter_actor_real_hide (ClutterActor *self) { if (CLUTTER_ACTOR_IS_VISIBLE (self)) { CLUTTER_ACTOR_UNSET_FLAGS (self, CLUTTER_ACTOR_MAPPED); clutter_actor_queue_redraw (self); } } /** * clutter_actor_hide * @self: A #ClutterActor * * Flags a clutter actor to be hidden. An actor not shown will not * appear on the display. **/ void clutter_actor_hide (ClutterActor *self) { if (CLUTTER_ACTOR_IS_VISIBLE (self)) { g_object_ref (self); g_signal_emit (self, actor_signals[HIDE], 0); g_object_notify (G_OBJECT (self), "visible"); g_object_unref (self); } } /** * clutter_actor_hide_all: * @self: a #ClutterActor * * Recursively hides an actor, and any child actor if @self * has child actors. * * Since: 0.2 */ void clutter_actor_hide_all (ClutterActor *self) { ClutterActorClass *klass; g_return_if_fail (CLUTTER_IS_ACTOR (self)); klass = CLUTTER_ACTOR_GET_CLASS (self); if (klass->hide_all) klass->hide_all (self); } /** * clutter_actor_realize * @self: A #ClutterActor * * Creates any underlying graphics resources needed by the actor to be * displayed. **/ void clutter_actor_realize (ClutterActor *self) { ClutterActorClass *klass; if (CLUTTER_ACTOR_IS_REALIZED (self)) return; CLUTTER_ACTOR_SET_FLAGS (self, CLUTTER_ACTOR_REALIZED); klass = CLUTTER_ACTOR_GET_CLASS (self); if (klass->realize) (klass->realize) (self); } /** * clutter_actor_unrealize * @self: A #ClutterActor * * Frees up any underlying graphics resources needed by the actor to be * displayed. **/ void clutter_actor_unrealize (ClutterActor *self) { ClutterActorClass *klass; if (!CLUTTER_ACTOR_IS_REALIZED (self)) return; CLUTTER_ACTOR_UNSET_FLAGS (self, CLUTTER_ACTOR_REALIZED); klass = CLUTTER_ACTOR_GET_CLASS (self); if (klass->unrealize) (klass->unrealize) (self); } /** * clutter_actor_pick: * @self: A #ClutterActor * @color: A #ClutterColor * * Renders a silhouette of the actor in supplied color. * * This function should not never be called directly by applications. **/ void clutter_actor_pick (ClutterActor *self, const ClutterColor *color) { ClutterActorClass *klass; klass = CLUTTER_ACTOR_GET_CLASS (self); if (G_UNLIKELY(klass->pick)) { /* Its pretty unlikely anything other than a container actor * would need to supply its own pick method. */ (klass->pick) (self, color); } else { cogl_color (color); cogl_rectangle (0, 0, clutter_actor_get_width(self), clutter_actor_get_height(self)); } } /* * Utility functions for manipulating transformation matrix * * Matrix: 4x4 of ClutterFixed */ #define M(m,row,col) (m)[col*4+row] /* Transform point (x,y,z) by matrix */ static void mtx_transform (ClutterFixed m[16], ClutterFixed *x, ClutterFixed *y, ClutterFixed *z, ClutterFixed *w) { ClutterFixed _x, _y, _z, _w; _x = *x; _y = *y; _z = *z; _w = *w; /* We care lot about precission here, so have to use QMUL */ *x = CFX_QMUL (M (m,0,0), _x) + CFX_QMUL (M (m,0,1), _y) + CFX_QMUL (M (m,0,2), _z) + CFX_QMUL (M (m,0,3), _w); *y = CFX_QMUL (M (m,1,0), _x) + CFX_QMUL (M (m,1,1), _y) + CFX_QMUL (M (m,1,2), _z) + CFX_QMUL (M (m,1,3), _w); *z = CFX_QMUL (M (m,2,0), _x) + CFX_QMUL (M (m,2,1), _y) + CFX_QMUL (M (m,2,2), _z) + CFX_QMUL (M (m,2,3), _w); *w = CFX_QMUL (M (m,3,0), _x) + CFX_QMUL (M (m,3,1), _y) + CFX_QMUL (M (m,3,2), _z) + CFX_QMUL (M (m,3,3), _w); /* Specially for Matthew: was going to put a comment here, but could not * think of anything at all to say ;) */ } /* Applies the transforms associated with this actor and its ancestors, * retrieves the resulting OpenGL modelview matrix, and uses the matrix * to transform the supplied point */ static void clutter_actor_transform_point (ClutterActor *actor, ClutterUnit *x, ClutterUnit *y, ClutterUnit *z, ClutterUnit *w) { ClutterFixed mtx[16]; ClutterActorPrivate *priv; g_return_if_fail (CLUTTER_IS_ACTOR (actor)); priv = actor->priv; cogl_push_matrix(); _clutter_actor_apply_modelview_transform_recursive (actor); cogl_get_modelview_matrix (mtx); mtx_transform (mtx, x, y, z, w); cogl_pop_matrix(); } /* Help macros to scale from OpenGL <-1,1> coordianta system to our * X-window based <0,window-size> coordinates */ #define MTX_GL_SCALE_X(x,w,v1,v2) (CFX_MUL( \ ((CFX_DIV (x,w) + CFX_ONE) >> 1), v1) \ + v2) #define MTX_GL_SCALE_Y(y,w,v1,v2) (v1 - CFX_MUL( \ ((CFX_DIV (y,w) + CFX_ONE) >> 1), v1) \ + v2) #define MTX_GL_SCALE_Z(z,w,v1,v2) MTX_GL_SCALE_X(z,w,v1,v2) /** * clutter_actor_project_point: * @self: A #ClutterActor * @x: in/out X * @y: in/out Y * @z: in * * Transforms point [x,y,z] in coordinance relative to the actor * into screen coordiances [x,y] * * Since: 0.4 **/ void clutter_actor_project_point (ClutterActor *self, ClutterUnit *x, ClutterUnit *y, ClutterUnit *z) { ClutterFixed mtx_p[16]; ClutterFixed v[4]; ClutterFixed w = CFX_ONE; g_return_if_fail (CLUTTER_IS_ACTOR (self)); /* First we tranform the point using the OpenGL modelview matrix */ clutter_actor_transform_point (self, x, y, z, &w); cogl_get_projection_matrix (mtx_p); cogl_get_viewport (v); /* Now, transform it again with the projection matrix */ mtx_transform (mtx_p, x, y, z, &w); /* Finaly translate from OpenGL coords to window coords */ *x = MTX_GL_SCALE_X(*x,w,v[2],v[0]); *y = MTX_GL_SCALE_Y(*y,w,v[3],v[1]); *z = MTX_GL_SCALE_Z(*z,w,v[2],v[0]); } /* Recursively tranform supplied vertices with the tranform for the current * actor and all its ancestors (like clutter_actor_transform_point() but * for all the vertices in one go). */ static void clutter_actor_transform_vertices (ClutterActor * self, ClutterVertex verts[4], ClutterFixed w[4]) { ClutterFixed mtx[16]; ClutterFixed _x, _y, _z, _w; ClutterActorPrivate *priv; g_return_if_fail (CLUTTER_IS_ACTOR (self)); priv = self->priv; cogl_push_matrix(); _clutter_actor_apply_modelview_transform_recursive (self); cogl_get_modelview_matrix (mtx); _x = 0; _y = 0; _z = 0; _w = CFX_ONE; mtx_transform (mtx, &_x, &_y, &_z, &_w); verts[0].x = _x; verts[0].y = _y; verts[0].z = _z; w[0] = _w; _x = priv->coords.x2 - priv->coords.x1; _y = 0; _z = 0; _w = CFX_ONE; mtx_transform (mtx, &_x, &_y, &_z, &_w); verts[1].x = _x; verts[1].y = _y; verts[1].z = _z; w[1] = _w; _x = 0; _y = priv->coords.y2 - priv->coords.y1; _z = 0; _w = CFX_ONE; mtx_transform (mtx, &_x, &_y, &_z, &_w); verts[2].x = _x; verts[2].y = _y; verts[2].z = _z; w[2] = _w; _x = priv->coords.x2 - priv->coords.x1; _y = priv->coords.y2 - priv->coords.y1; _z = 0; _w = CFX_ONE; mtx_transform (mtx, &_x, &_y, &_z, &_w); verts[3].x = _x; verts[3].y = _y; verts[3].z = _z; w[3] = _w; cogl_pop_matrix(); } /** * clutter_actor_project_vertices: * @self: A #ClutterActor * @verts: Pointer to a location of an array of 4 #ClutterVertex where to * store the result. * * Calculates the tranformed screen coordinaces of the four corners of * the actor; the returned corners are in the following order: * bottomleft, bottomright, topright, topleft. * * Since: 0.4 **/ void clutter_actor_project_vertices (ClutterActor * self, ClutterVertex verts[4]) { ClutterFixed mtx_p[16]; ClutterFixed v[4]; ClutterFixed w[4]; ClutterActorPrivate *priv; g_return_if_fail (CLUTTER_IS_ACTOR (self)); priv = self->priv; clutter_actor_transform_vertices (self, verts, w); cogl_get_projection_matrix (mtx_p); cogl_get_viewport (v); mtx_transform (mtx_p, &verts[0].x, &verts[0].y, &verts[0].z, &w[0]); verts[0].x = MTX_GL_SCALE_X (verts[0].x, w[0], v[2], v[0]); verts[0].y = MTX_GL_SCALE_Y (verts[0].y, w[0], v[3], v[1]); verts[0].z = MTX_GL_SCALE_Z (verts[0].z, w[0], v[2], v[0]); mtx_transform (mtx_p, &verts[1].x, &verts[1].y, &verts[1].z, &w[1]); verts[1].x = MTX_GL_SCALE_X (verts[1].x, w[1], v[2], v[0]); verts[1].y = MTX_GL_SCALE_Y (verts[1].y, w[1], v[3], v[1]); verts[1].z = MTX_GL_SCALE_Z (verts[1].z, w[1], v[2], v[0]); mtx_transform (mtx_p, &verts[2].x, &verts[2].y, &verts[2].z, &w[2]); verts[2].x = MTX_GL_SCALE_X (verts[2].x, w[2], v[2], v[0]); verts[2].y = MTX_GL_SCALE_Y (verts[2].y, w[2], v[3], v[1]); verts[2].z = MTX_GL_SCALE_Z (verts[2].z, w[2], v[2], v[0]); mtx_transform (mtx_p, &verts[3].x, &verts[3].y, &verts[3].z, &w[3]); verts[3].x = MTX_GL_SCALE_X (verts[3].x, w[3], v[2], v[0]); verts[3].y = MTX_GL_SCALE_Y (verts[3].y, w[3], v[3], v[1]); verts[3].z = MTX_GL_SCALE_Z (verts[3].z, w[3], v[2], v[0]); } /* Applies the transforms associated with this actor to the * OpenGL modelview matrix. * * This function does not push/pop matrix; it is the responsibility * of the caller to do so as appropriate */ void _clutter_actor_apply_modelview_transform (ClutterActor * self) { ClutterActorPrivate *priv = self->priv; if (clutter_actor_get_parent (self) != NULL) { cogl_translate (CLUTTER_UNITS_TO_INT (priv->coords.x1), CLUTTER_UNITS_TO_INT (priv->coords.y1), 0); } if (priv->rzang) { cogl_translate (priv->rzx, priv->rzy, 0); cogl_rotatex (priv->rzang, 0, 0, CFX_ONE); cogl_translate (-priv->rzx, -priv->rzy, 0); } if (priv->ryang) { cogl_translate (priv->ryx, 0, priv->z + priv->ryz); cogl_rotatex (priv->ryang, 0, CFX_ONE, 0); cogl_translate (-priv->ryx, 0, -(priv->z + priv->ryz)); } if (priv->rxang) { cogl_translate (0, priv->rxy, priv->z + priv->rxz); cogl_rotatex (priv->rxang, CFX_ONE, 0, 0); cogl_translate (0, -priv->rxy, -(priv->z - priv->rxz)); } if (priv->z) cogl_translate (0, 0, priv->z); if (priv->scale_x != CFX_ONE || priv->scale_y != CFX_ONE) { cogl_scale (priv->scale_x, priv->scale_y); } if (priv->has_clip) cogl_clip_set (&(priv->clip)); } /* Recursively applies the transforms associated with this actor and * its ancestors to the OpenGL modelview matrix. * * This function does not push/pop matrix; it is the responsibility * of the caller to do so as appropriate */ void _clutter_actor_apply_modelview_transform_recursive (ClutterActor * self) { ClutterActor * parent; _clutter_actor_apply_modelview_transform (self); parent = clutter_actor_get_parent (self); if (parent) _clutter_actor_apply_modelview_transform_recursive (parent); } /** * clutter_actor_paint: * @self: A #ClutterActor * * Renders the actor to display. * * This function should not be called directly by applications instead * #clutter_actor_queue_redraw should be used to queue paints. **/ void clutter_actor_paint (ClutterActor *self) { ClutterActorPrivate *priv; ClutterActorClass *klass; ClutterMainContext *context; g_return_if_fail (CLUTTER_IS_ACTOR (self)); priv = self->priv; if (!CLUTTER_ACTOR_IS_REALIZED (self)) { CLUTTER_NOTE (PAINT, "Attempting realize via paint()"); clutter_actor_realize(self); if (!CLUTTER_ACTOR_IS_REALIZED (self)) { CLUTTER_NOTE (PAINT, "Attempt failed, aborting paint"); return; } } context = clutter_context_get_default (); klass = CLUTTER_ACTOR_GET_CLASS (self); cogl_push_matrix(); _clutter_actor_apply_modelview_transform (self); if (G_UNLIKELY(context->pick_mode == TRUE)) { ClutterColor col; guint32 id; id = clutter_actor_get_id (self); /* Encode the actor id into a color */ col.red = (id >> 16) & 0xff; col.green = (id >> 8) & 0xff; col.blue = id & 0xff; col.alpha = 0xff; /* Actor will then paint silhouette of itself in supplied color. * See clutter_stage_get_actor_at_pos() for where picking is enabled. */ clutter_actor_pick (self, &col); } else { if (G_LIKELY(klass->paint)) (klass->paint) (self); } if (priv->has_clip) cogl_clip_unset(); cogl_pop_matrix(); } #undef M /** * clutter_actor_request_coords: * @self: A #ClutterActor * @box: A #ClutterActorBox with requested new co-ordinates in ClutterUnits * * Requests new untransformed co-ordinates for the #ClutterActor * ralative to any parent. * * This function should not be called directly by applications instead * the various position/geometry methods should be used. **/ void clutter_actor_request_coords (ClutterActor *self, ClutterActorBox *box) { ClutterActorClass *klass; gboolean x_change, y_change, width_change, height_change; klass = CLUTTER_ACTOR_GET_CLASS (self); if (klass->request_coords) klass->request_coords (self, box); x_change = (self->priv->coords.x1 != box->x1); y_change = (self->priv->coords.y1 != box->y1); width_change = ((self->priv->coords.x2 - self->priv->coords.x1) != (box->x2 - box->x1)); height_change = ((self->priv->coords.y2 - self->priv->coords.y1) != (box->y2 - box->y1)); if (x_change || y_change || width_change || height_change) { self->priv->coords.x1 = box->x1; self->priv->coords.y1 = box->y1; self->priv->coords.x2 = box->x2; self->priv->coords.y2 = box->y2; if (CLUTTER_ACTOR_IS_VISIBLE (self)) clutter_actor_queue_redraw (self); g_object_ref (self); g_object_freeze_notify (G_OBJECT (self)); if (x_change) g_object_notify (G_OBJECT (self), "x"); if (y_change) g_object_notify (G_OBJECT (self), "y"); if (width_change) g_object_notify (G_OBJECT (self), "width"); if (height_change) g_object_notify (G_OBJECT (self), "height"); g_object_thaw_notify (G_OBJECT (self)); g_object_unref (self); } } /** * clutter_actor_query_coords: * @self: A #ClutterActor * @box: A location to store the actors #ClutterActorBox co-ordinates * * Requests the untransformed co-ordinates (in ClutterUnits) for the * #ClutterActor relative to any parent. * * This function should not be called directly by applications instead * the various position/geometry methods should be used. **/ void clutter_actor_query_coords (ClutterActor *self, ClutterActorBox *box) { ClutterActorClass *klass; klass = CLUTTER_ACTOR_GET_CLASS (self); box->x1 = self->priv->coords.x1; box->y1 = self->priv->coords.y1; box->x2 = self->priv->coords.x2; box->y2 = self->priv->coords.y2; if (klass->query_coords) { /* FIXME: This is kind of a cludge - we pass out *private* * co-ords down to any subclasses so they can modify * we then resync any changes. Needed for group class. * Need to figure out nicer way. */ klass->query_coords(self, box); self->priv->coords.x1 = box->x1; self->priv->coords.y1 = box->y1; self->priv->coords.x2 = box->x2; self->priv->coords.y2 = box->y2; } } static void clutter_actor_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec) { ClutterActor *actor; ClutterActorPrivate *priv; actor = CLUTTER_ACTOR(object); priv = actor->priv; switch (prop_id) { case PROP_X: clutter_actor_set_position (actor, g_value_get_int (value), clutter_actor_get_y (actor)); break; case PROP_Y: clutter_actor_set_position (actor, clutter_actor_get_x (actor), g_value_get_int (value)); break; case PROP_WIDTH: clutter_actor_set_size (actor, g_value_get_int (value), clutter_actor_get_height (actor)); break; case PROP_HEIGHT: clutter_actor_set_size (actor, clutter_actor_get_width (actor), g_value_get_int (value)); break; case PROP_OPACITY: clutter_actor_set_opacity (actor, g_value_get_uchar (value)); break; case PROP_NAME: clutter_actor_set_name (actor, g_value_get_string (value)); break; case PROP_VISIBLE: if (g_value_get_boolean (value) == TRUE) clutter_actor_show (actor); else clutter_actor_hide (actor); break; case PROP_CLIP: { ClutterGeometry *geom = g_value_get_boxed (value); clutter_actor_set_clip (actor, geom->x, geom->y, geom->width, geom->height); } break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void clutter_actor_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec) { ClutterActor *actor; ClutterActorPrivate *priv; actor = CLUTTER_ACTOR(object); priv = actor->priv; switch (prop_id) { case PROP_X: g_value_set_int (value, clutter_actor_get_x (actor)); break; case PROP_Y: g_value_set_int (value, clutter_actor_get_y (actor)); break; case PROP_WIDTH: g_value_set_int (value, clutter_actor_get_width (actor)); break; case PROP_HEIGHT: g_value_set_int (value, clutter_actor_get_height (actor)); break; case PROP_OPACITY: g_value_set_uchar (value, priv->opacity); break; case PROP_NAME: g_value_set_string (value, priv->name); break; case PROP_VISIBLE: g_value_set_boolean (value, (CLUTTER_ACTOR_IS_VISIBLE (actor) != FALSE)); break; case PROP_HAS_CLIP: g_value_set_boolean (value, priv->has_clip); break; case PROP_CLIP: g_value_set_boxed (value, &(priv->clip)); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void clutter_actor_dispose (GObject *object) { ClutterActor *self = CLUTTER_ACTOR (object); CLUTTER_NOTE (MISC, "Disposing of object (id=%d) of type `%s'", self->priv->id, g_type_name (G_OBJECT_TYPE (self))); if (!(CLUTTER_PRIVATE_FLAGS (self) & CLUTTER_ACTOR_IN_DESTRUCTION)) { CLUTTER_SET_PRIVATE_FLAGS (self, CLUTTER_ACTOR_IN_DESTRUCTION); g_signal_emit (self, actor_signals[DESTROY], 0); CLUTTER_UNSET_PRIVATE_FLAGS (self, CLUTTER_ACTOR_IN_DESTRUCTION); } G_OBJECT_CLASS (clutter_actor_parent_class)->dispose (object); } static void clutter_actor_finalize (GObject *object) { ClutterActor *actor = CLUTTER_ACTOR (object); g_free (actor->priv->name); G_OBJECT_CLASS (clutter_actor_parent_class)->finalize (object); } static void clutter_actor_class_init (ClutterActorClass *klass) { GObjectClass *object_class = G_OBJECT_CLASS (klass); object_class->set_property = clutter_actor_set_property; object_class->get_property = clutter_actor_get_property; object_class->dispose = clutter_actor_dispose; object_class->finalize = clutter_actor_finalize; g_type_class_add_private (klass, sizeof (ClutterActorPrivate)); /** * ClutterActor:x: * * X coordinate of the actor. */ g_object_class_install_property (object_class, PROP_X, g_param_spec_int ("x", "X co-ord", "X co-ord of actor", -G_MAXINT, G_MAXINT, 0, CLUTTER_PARAM_READWRITE)); /** * ClutterActor:y: * * Y coordinate of the actor. */ g_object_class_install_property (object_class, PROP_Y, g_param_spec_int ("y", "Y co-ord", "Y co-ord of actor", -G_MAXINT, G_MAXINT, 0, CLUTTER_PARAM_READWRITE)); /** * ClutterActor:width: * * Width of the actor (in pixels). */ g_object_class_install_property (object_class, PROP_WIDTH, g_param_spec_int ("width", "Width", "Width of actor in pixels", 0, G_MAXINT, 0, CLUTTER_PARAM_READWRITE)); /** * ClutterActor:height: * * Height of the actor (in pixels). */ g_object_class_install_property (object_class, PROP_HEIGHT, g_param_spec_int ("height", "Height", "Height of actor in pixels", 0, G_MAXINT, 0, CLUTTER_PARAM_READWRITE)); /** * ClutterActor:opacity: * * Opacity of the actor. */ g_object_class_install_property (object_class, PROP_OPACITY, g_param_spec_uchar ("opacity", "Opacity", "Opacity of actor", 0, 0xff, 0xff, G_PARAM_CONSTRUCT | CLUTTER_PARAM_READWRITE)); /** * ClutterActor:visible: * * Whether the actor is visible or not. */ g_object_class_install_property (object_class, PROP_VISIBLE, g_param_spec_boolean ("visible", "Visible", "Whether the actor is visible or not", FALSE, CLUTTER_PARAM_READWRITE)); /** * ClutterActor:has-clip: * * Whether the actor has the clip property set or not. */ g_object_class_install_property (object_class, PROP_HAS_CLIP, g_param_spec_boolean ("has-clip", "Has Clip", "Whether the actor has a clip set or not", FALSE, CLUTTER_PARAM_READABLE)); /** * ClutterActor:clip: * * The clip region for the actor. */ g_object_class_install_property (object_class, PROP_CLIP, g_param_spec_boxed ("clip", "Clip", "The clip region for the actor", CLUTTER_TYPE_GEOMETRY, CLUTTER_PARAM_READWRITE)); /** * ClutterActor:name: * * The name of the actor. * * Since: 0.2 */ g_object_class_install_property (object_class, PROP_NAME, g_param_spec_string ("name", "Name", "Name of the actor", NULL, CLUTTER_PARAM_READWRITE)); /** * ClutterActor::destroy: * @actor: the object which received the signal * * The ::destroy signal is emitted when an actor is destroyed, * either by direct invocation of clutter_actor_destroy() or * when the #ClutterGroup that contains the actor is destroyed. * * Since: 0.2 */ actor_signals[DESTROY] = g_signal_new ("destroy", G_TYPE_FROM_CLASS (object_class), G_SIGNAL_RUN_CLEANUP | G_SIGNAL_NO_RECURSE | G_SIGNAL_NO_HOOKS, G_STRUCT_OFFSET (ClutterActorClass, destroy), NULL, NULL, clutter_marshal_VOID__VOID, G_TYPE_NONE, 0); /** * ClutterActor::show: * @actor: the object which received the signal * * The ::show signal is emitted when an actor becomes visible. * * Since: 0.2 */ actor_signals[SHOW] = g_signal_new ("show", G_TYPE_FROM_CLASS (object_class), G_SIGNAL_RUN_FIRST, G_STRUCT_OFFSET (ClutterActorClass, show), NULL, NULL, clutter_marshal_VOID__VOID, G_TYPE_NONE, 0); /** * ClutterActor::hide: * @actor: the object which received the signal * * The ::hide signal is emitted when an actor is no longer visible. * * Since: 0.2 */ actor_signals[HIDE] = g_signal_new ("hide", G_TYPE_FROM_CLASS (object_class), G_SIGNAL_RUN_FIRST, G_STRUCT_OFFSET (ClutterActorClass, hide), NULL, NULL, clutter_marshal_VOID__VOID, G_TYPE_NONE, 0); /** * ClutterActor::parent-set: * @actor: the object which received the signal * @old_parent: the previous parent of the actor, or %NULL * * This signal is emitted when the parent of the actor changes. * * Since: 0.2 */ actor_signals[PARENT_SET] = g_signal_new ("parent-set", G_TYPE_FROM_CLASS (object_class), G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (ClutterActorClass, parent_set), NULL, NULL, clutter_marshal_VOID__OBJECT, G_TYPE_NONE, 1, CLUTTER_TYPE_ACTOR); klass->show = clutter_actor_real_show; klass->show_all = clutter_actor_show; klass->hide = clutter_actor_real_hide; klass->hide_all = clutter_actor_hide; } static void clutter_actor_init (ClutterActor *self) { self->priv = CLUTTER_ACTOR_GET_PRIVATE (self); self->priv->parent_actor = NULL; self->priv->has_clip = FALSE; self->priv->opacity = 0xff; self->priv->id = __id++; self->priv->scale_x = CFX_ONE; self->priv->scale_y = CFX_ONE; clutter_actor_set_position (self, 0, 0); clutter_actor_set_size (self, 0, 0); } /** * clutter_actor_destroy: * @self: a #ClutterActor * * Destroys an actor. When an actor is destroyed, it will break any * references it holds to other objects. If the actor is inside a * group, the actor will be removed from the group. * * When you destroy a group its children will be destroyed as well. */ void clutter_actor_destroy (ClutterActor *self) { g_return_if_fail (CLUTTER_IS_ACTOR (self)); if (!(CLUTTER_PRIVATE_FLAGS (self) & CLUTTER_ACTOR_IN_DESTRUCTION)) g_object_run_dispose (G_OBJECT (self)); } /** * clutter_actor_queue_redraw: * @self: A #ClutterActor * * Queues up a redraw of an actor and any children. The redraw occurs * once the main loop becomes idle (after the current batch of events * has been processed, roughly). * * Applications rarely need to call this as redraws are handled automatically * by modification functions. */ void clutter_actor_queue_redraw (ClutterActor *self) { ClutterMainContext *ctx = CLUTTER_CONTEXT(); if (!ctx->update_idle) { CLUTTER_TIMESTAMP (SCHEDULER, "Adding ideler for actor: %p", self); ctx->update_idle = g_idle_add_full (G_PRIORITY_DEFAULT + 10, redraw_update_idle, NULL, NULL); } } /** * clutter_actor_set_geometry: * @self: A #ClutterActor * @geometry: A #ClutterGeometry * * Sets the actors untransformed geometry in pixels relative to any * parent actor. */ void clutter_actor_set_geometry (ClutterActor *self, const ClutterGeometry *geometry) { ClutterActorBox box; box.x1 = CLUTTER_UNITS_FROM_INT (geometry->x); box.y1 = CLUTTER_UNITS_FROM_INT (geometry->y); box.x2 = CLUTTER_UNITS_FROM_INT (geometry->x + geometry->width); box.y2 = CLUTTER_UNITS_FROM_INT (geometry->y + geometry->height); clutter_actor_request_coords (self, &box); } /** * clutter_actor_get_geometry: * @self: A #ClutterActor * @geometry: A location to store actors #ClutterGeometry * * Gets the actors untransformed geometry in pixels relative to any * parent actor. */ void clutter_actor_get_geometry (ClutterActor *self, ClutterGeometry *geometry) { ClutterActorBox box; g_return_if_fail (CLUTTER_IS_ACTOR (self)); clutter_actor_query_coords (self, &box); geometry->x = CLUTTER_UNITS_TO_INT (box.x1); geometry->y = CLUTTER_UNITS_TO_INT (box.y1); geometry->width = CLUTTER_UNITS_TO_INT (box.x2 - box.x1); geometry->height = CLUTTER_UNITS_TO_INT (box.y2 - box.y1); } /** * clutter_actor_get_coords: * @self: A #ClutterActor * @x1: A location to store actors left position if non NULL. * @y1: A location to store actors top position if non NULL. * @x2: A location to store actors right position if non NULL. * @y2: A location to store actors bottom position if non NULL. * * Gets the actors untransformed bounding rectangle co-ordinates in pixels * relative to any parent actor. */ void clutter_actor_get_coords (ClutterActor *self, gint *x1, gint *y1, gint *x2, gint *y2) { ClutterActorBox box; g_return_if_fail (CLUTTER_IS_ACTOR (self)); clutter_actor_query_coords (self, &box); if (x1) *x1 = CLUTTER_UNITS_TO_INT (box.x1); if (y1) *y1 = CLUTTER_UNITS_TO_INT (box.y1); if (x2) *x2 = CLUTTER_UNITS_TO_INT (box.x2); if (y2) *y2 = CLUTTER_UNITS_TO_INT (box.y2); } /** * clutter_actor_set_position * @self: A #ClutterActor * @x: New left position of actor in pixels. * @y: New top position of actor in pixels. * * Sets the actors position in pixels relative to any * parent actor. */ void clutter_actor_set_position (ClutterActor *self, gint x, gint y) { ClutterActorBox box; g_return_if_fail (CLUTTER_IS_ACTOR (self)); clutter_actor_query_coords (self, &box); box.x2 += (CLUTTER_UNITS_FROM_INT (x) - box.x1); box.y2 += (CLUTTER_UNITS_FROM_INT (y) - box.y1); box.x1 = CLUTTER_UNITS_FROM_INT (x); box.y1 = CLUTTER_UNITS_FROM_INT (y); clutter_actor_request_coords (self, &box); } /** * clutter_actor_move_by * @self: A #ClutterActor * @dx: Distance to move Actor on X axis. * @dy: Distance to move Actor on Y axis. * * Moves an actor by specified distance relative to * current position in pixels. * * Since: 0.2 */ void clutter_actor_move_by (ClutterActor *self, gint dx, gint dy) { ClutterActorBox box; gint32 dxu = CLUTTER_UNITS_FROM_INT (dx); gint32 dyu = CLUTTER_UNITS_FROM_INT (dy); g_return_if_fail (CLUTTER_IS_ACTOR (self)); clutter_actor_query_coords (self, &box); box.x2 += dxu; box.y2 += dyu; box.x1 += dxu; box.y1 += dyu; clutter_actor_request_coords (self, &box); } /** * clutter_actor_set_size * @self: A #ClutterActor * @width: New width of actor in pixels * @height: New height of actor in pixels * * Sets the actors size in pixels. */ void clutter_actor_set_size (ClutterActor *self, gint width, gint height) { ClutterActorBox box; g_return_if_fail (CLUTTER_IS_ACTOR (self)); clutter_actor_query_coords (self, &box); box.x2 = box.x1 + CLUTTER_UNITS_FROM_INT (width); box.y2 = box.y1 + CLUTTER_UNITS_FROM_INT (height); clutter_actor_request_coords (self, &box); } /** * clutter_actor_get_size: * @self: A #ClutterActor * @width: Location to store width if non NULL. * @height: Location to store height if non NULL. * * Gets the size of an actor in pixels ignoring any scaling factors. * * Since: 0.2 */ void clutter_actor_get_size (ClutterActor *self, guint *width, guint *height) { g_return_if_fail (CLUTTER_IS_ACTOR (self)); if (width) *width = clutter_actor_get_width (self); if (height) *height = clutter_actor_get_height (self); } /* * clutter_actor_get_abs_position_units * @self: A #ClutterActor * @x: Location to store x position if non NULL. * @y: Location to store y position if non NULL. * * Gets the absolute position of an actor in clutter units relative * to the stage. * * Since: 0.4 */ static void clutter_actor_get_abs_position_units (ClutterActor *self, gint32 *x, gint32 *y) { ClutterUnit zu = 0; *x = *y = 0; clutter_actor_project_point (self, x, y, &zu); } /** * clutter_actor_get_abs_position * @self: A #ClutterActor * @x: Location to store x position if non NULL. * @y: Location to store y position if non NULL. * * Gets the absolute position of an actor in pixels relative * to the stage. */ void clutter_actor_get_abs_position (ClutterActor *self, gint *x, gint *y) { gint32 xu, yu; clutter_actor_get_abs_position_units (self, &xu, &yu); *x = CLUTTER_UNITS_TO_INT (xu); *y = CLUTTER_UNITS_TO_INT (yu); } /* * clutter_actor_get_abs_size_units: * @self: A #ClutterActor * @width: Location to store width if non NULL. * @height: Location to store height if non NULL. * * Gets the absolute size of an actor in clutter units taking into account * an scaling factors. * * Note: When the actor (or one of its ancestors) is rotated around the x or y * axis, it no longer appears as on the stage as a rectangle, but as a generic * quadrangle; in that case this function returns the size of the smallest * rectangle that encapsulates the entire quad. Please note that in this case * no assumptions can be made about the relative position of this envelope to * the absolute position of the actor, as returned by * clutter_actor_get_abs_position() - if you need this information, you need * to use clutter_actor_project_vertices() to get the coords of the actual * quadrangle. * * Since: 0.4 */ static void clutter_actor_get_abs_size_units (ClutterActor *self, gint32 *width, gint32 *height) { ClutterVertex v[4]; ClutterFixed x_min, x_max, y_min, y_max; gint i; clutter_actor_project_vertices (self, v); x_min = x_max = v[0].x; y_min = y_max = v[0].y; for (i = 1; i < sizeof(v)/sizeof(v[0]); ++i) { if (v[i].x < x_min) x_min = v[i].x; if (v[i].x > x_max) x_max = v[i].x; if (v[i].y < y_min) y_min = v[i].y; if (v[i].y > y_max) y_max = v[i].y; } *width = x_max - x_min; *height = y_max - y_min; } /** * clutter_actor_get_abs_size: * @self: A #ClutterActor * @width: Location to store width if non NULL. * @height: Location to store height if non NULL. * * Gets the absolute size of an actor taking into account * an scaling factors */ void clutter_actor_get_abs_size (ClutterActor *self, guint *width, guint *height) { gint32 wu, hu; clutter_actor_get_abs_size_units (self, &wu, &hu); *width = CLUTTER_UNITS_TO_INT (wu); *height = CLUTTER_UNITS_TO_INT (hu); } /** * clutter_actor_get_width * @self: A #ClutterActor * * Retrieves the actors width ignoring any scaling factors. * * Return value: The actor width in pixels **/ guint clutter_actor_get_width (ClutterActor *self) { ClutterActorBox box; g_return_val_if_fail (CLUTTER_IS_ACTOR (self), 0); clutter_actor_query_coords (self, &box); return CLUTTER_UNITS_TO_INT (box.x2 - box.x1); } /** * clutter_actor_get_height * @self: A #ClutterActor * * Retrieves the actors height ignoring any scaling factors. * * Return value: The actor height in pixels **/ guint clutter_actor_get_height (ClutterActor *self) { ClutterActorBox box; g_return_val_if_fail (CLUTTER_IS_ACTOR (self), 0); clutter_actor_query_coords (self, &box); return CLUTTER_UNITS_TO_INT (box.y2 - box.y1); } /** * clutter_actor_set_width * @self: A #ClutterActor * @width: Requested new width for actor * * Requests a new width for actor * * since: 2.0 **/ void clutter_actor_set_width (ClutterActor *self, guint width) { clutter_actor_set_size (self, width, clutter_actor_get_height (self)); } /** * clutter_actor_set_height * @self: A #ClutterActor * @height: Requested new height for actor * * Requests a new height for actor * * since: 2.0 **/ void clutter_actor_set_height (ClutterActor *self, guint height) { clutter_actor_set_size (self, clutter_actor_get_width (self), height); } /** * clutter_actor_get_x * @self: A #ClutterActor * * Retrieves the actors x position relative to any parent. * * Return value: The actor x position in pixels ignoring any tranforms * (i.e scaling, rotation). **/ gint clutter_actor_get_x (ClutterActor *self) { ClutterActorBox box; g_return_val_if_fail (CLUTTER_IS_ACTOR (self), 0); clutter_actor_query_coords (self, &box); return CLUTTER_UNITS_TO_INT (box.x1); } /** * clutter_actor_get_y: * @self: A #ClutterActor * * Retrieves the actors y position relative to any parent. * * Return value: The actor y position in pixels ignoring any tranforms * (i.e scaling, rotation). **/ gint clutter_actor_get_y (ClutterActor *self) { ClutterActorBox box; g_return_val_if_fail (CLUTTER_IS_ACTOR (self), 0); clutter_actor_query_coords (self, &box); return CLUTTER_UNITS_TO_INT (box.y1); } /** * clutter_actor_set_scalex: * @self: A #ClutterActor * @scale_x: #ClutterFixed factor to scale actor by horizontally. * @scale_y: #ClutterFixed factor to scale actor by vertically. * * Scales an actor with fixed point parameters. */ void clutter_actor_set_scalex (ClutterActor *self, ClutterFixed scale_x, ClutterFixed scale_y) { g_return_if_fail (CLUTTER_IS_ACTOR (self)); self->priv->scale_x = scale_x; self->priv->scale_y = scale_y; if (CLUTTER_ACTOR_IS_VISIBLE (self)) clutter_actor_queue_redraw (self); } /** * clutter_actor_set_scale: * @self: A #ClutterActor * @scale_x: double factor to scale actor by horizontally. * @scale_y: double factor to scale actor by vertically. * * Scales an actor with floating point parameters. * * Since: 0.2 */ void clutter_actor_set_scale (ClutterActor *self, double scale_x, double scale_y) { g_return_if_fail (CLUTTER_IS_ACTOR (self)); clutter_actor_set_scalex (self, CLUTTER_FLOAT_TO_FIXED (scale_x), CLUTTER_FLOAT_TO_FIXED (scale_y)); } /** * clutter_actor_get_scalex: * @self: A #ClutterActor * @scale_x: Location to store horizonal fixed scale factor if non NULL. * @scale_y: Location to store vertical fixed scale factor if non NULL. * * Retrieves an actors scale in fixed point. * * Since: 0.2 */ void clutter_actor_get_scalex (ClutterActor *self, ClutterFixed *scale_x, ClutterFixed *scale_y) { if (scale_x) *scale_x = self->priv->scale_x; if (scale_y) *scale_y = self->priv->scale_y; } /** * clutter_actor_get_scale: * @self: A #ClutterActor * @scale_x: Location to store horizonal float scale factor if non NULL. * @scale_y: Location to store vertical float scale factor if non NULL. * * Retrieves an actors scale in floating point. * * Since: 0.2 */ void clutter_actor_get_scale (ClutterActor *self, gdouble *scale_x, gdouble *scale_y) { if (scale_x) *scale_x = CLUTTER_FIXED_TO_FLOAT (self->priv->scale_x); if (scale_y) *scale_y = CLUTTER_FIXED_TO_FLOAT (self->priv->scale_y); } /** * clutter_actor_set_scale_with_gravity: * @self: A #ClutterActor * @scale_x: scaling factor for x axis * @scale_y: scaling factor for y axis * @gravity: #ClutterGravity to apply to scaling. * * Scales the actor by scale_x, scale_y taking into consideration the * required gravity. * * Since: 0.4 */ void clutter_actor_set_scale_with_gravity (ClutterActor *self, gfloat scale_x, gfloat scale_y, ClutterGravity gravity) { clutter_actor_set_scale_with_gravityx (self, CLUTTER_FLOAT_TO_FIXED (scale_x), CLUTTER_FLOAT_TO_FIXED (scale_y), gravity); } /** * clutter_actor_set_scale_with_gravityx: * @self: A #ClutterActor * @scale_x: #ClutterFixed scaling factor for x axis * @scale_y: #ClutterFixed scaling factor for y axis * @gravity: #ClutterGravity to apply to scaling. * * Scales the actor by scale_x, scale_y taking into consideration the * required gravity. * * Since: 0.4 */ void clutter_actor_set_scale_with_gravityx (ClutterActor *self, ClutterFixed scale_x, ClutterFixed scale_y, ClutterGravity gravity) { ClutterActorBox box; gint32 sw, sh, w, h; gint32 x, y; clutter_actor_get_abs_size_units (self, &w, &h); clutter_actor_set_scalex (self, scale_x, scale_y); if (gravity == CLUTTER_GRAVITY_NONE || gravity == CLUTTER_GRAVITY_NORTH_WEST) return; clutter_actor_get_abs_size_units (self, &sw, &sh); clutter_actor_query_coords (self, &box); x = box.x1; y = box.y1; switch (gravity) { case CLUTTER_GRAVITY_NORTH: x = x - ((sw - w) / 2); break; case CLUTTER_GRAVITY_NORTH_EAST: x = x + w - sw; break; case CLUTTER_GRAVITY_EAST: x = x + w - sw; y = y - ((sh - h) / 2); break; case CLUTTER_GRAVITY_SOUTH_EAST: x = x + w - sw; y = y + h - sh; break; case CLUTTER_GRAVITY_SOUTH: x = x - ((sw - w) / 2); y = y + h - sh; break; case CLUTTER_GRAVITY_SOUTH_WEST: y = y + h - sh; break; case CLUTTER_GRAVITY_WEST: y = y - ((sh - h) / 2); break; case CLUTTER_GRAVITY_CENTER: x = x - ((sw - w) / 2); y = y - ((sh - h) / 2); default: break; } box.x2 += (x - box.x1); box.y2 += (y - box.y1); box.x1 = x; box.y1 = y; clutter_actor_request_coords (self, &box); } /** * clutter_actor_set_opacity: * @self: A #ClutterActor * @opacity: New opacity value for actor. * * Sets the actors opacity, with zero being completely transparent. */ void clutter_actor_set_opacity (ClutterActor *self, guint8 opacity) { g_return_if_fail (CLUTTER_IS_ACTOR (self)); self->priv->opacity = opacity; if (CLUTTER_ACTOR_IS_VISIBLE (self)) clutter_actor_queue_redraw (self); } /** * clutter_actor_get_opacity: * @self: A #ClutterActor * * Retrieves the actors opacity. * * Return value: The actor opacity value. */ guint8 clutter_actor_get_opacity (ClutterActor *self) { ClutterActor *parent; g_return_val_if_fail (CLUTTER_IS_ACTOR (self), 0); parent = self->priv->parent_actor; /* Factor in the actual actors opacity with parents */ if (parent && clutter_actor_get_opacity (parent) != 0xff) return (clutter_actor_get_opacity(parent) * self->priv->opacity) / 0xff; return self->priv->opacity; } /** * clutter_actor_set_name: * @self: A #ClutterActor * @name: Textual tag to apply to actor * * Sets a textual tag to the actor. */ void clutter_actor_set_name (ClutterActor *self, const gchar *name) { g_return_if_fail (CLUTTER_IS_ACTOR (self)); g_object_ref (self); g_free (self->priv->name); if (name && name[0] != '\0') self->priv->name = g_strdup(name); g_object_notify (G_OBJECT (self), "name"); g_object_unref (self); } /** * clutter_actor_get_name: * @self: A #ClutterActor * * Retrieves the name of @self. * * Return value: pointer to textual tag for the actor. The * returned string is owned by the actor and should not * be modified or freed. */ G_CONST_RETURN gchar * clutter_actor_get_name (ClutterActor *self) { g_return_val_if_fail (CLUTTER_IS_ACTOR (self), NULL); return self->priv->name; } /** * clutter_actor_get_id: * @self: A #ClutterActor * * Retrieves the unique id for @self. * * Return value: Globally unique value for object instance. */ guint32 clutter_actor_get_id (ClutterActor *self) { g_return_val_if_fail (CLUTTER_IS_ACTOR (self), 0); return self->priv->id; } /** * clutter_actor_set_depth: * @self: a #ClutterActor * @depth: Z co-ord * * Sets the Z co-ordinate of @self to @depth. The Units of which are dependant * on the perspective setup. */ void clutter_actor_set_depth (ClutterActor *self, gint depth) { ClutterActorPrivate *priv; g_return_if_fail (CLUTTER_IS_ACTOR (self)); priv = self->priv; /* Sets Z value. - FIXME: should invert ?*/ priv->z = depth; if (priv->parent_actor && CLUTTER_IS_GROUP (priv->parent_actor)) { /* We need to resort the group stacking order as to * correctly render alpha values. * * FIXME: This is sub optimal. maybe queue the the sort * before stacking */ clutter_group_sort_depth_order (CLUTTER_GROUP (priv->parent_actor)); } } /** * clutter_actor_get_depth: * @self: a #ClutterActor * * Retrieves the depth of @self. * * Return value: the depth of a #ClutterActor */ gint clutter_actor_get_depth (ClutterActor *self) { g_return_val_if_fail (CLUTTER_IS_ACTOR (self), -1); return self->priv->z; } /** * clutter_actor_rotate_z: * @self: A #ClutterActor * @angle: Angle of rotation * @x: X co-ord to rotate actor around ( relative to actor position ) * @y: Y co-ord to rotate actor around ( relative to actor position ) * * Rotates actor around the Z axis. */ void clutter_actor_rotate_z (ClutterActor *self, gfloat angle, gint x, gint y) { /* FIXME: FIXED VERSION */ g_return_if_fail (CLUTTER_IS_ACTOR (self)); self->priv->rzang = CLUTTER_FLOAT_TO_FIXED (angle); self->priv->rzx = x; self->priv->rzy = y; if (CLUTTER_ACTOR_IS_VISIBLE (self)) clutter_actor_queue_redraw (self); } /** * clutter_actor_rotate_x: * @self: A #ClutterActor * @angle: Angle of rotation * @y: Y co-ord to rotate actor around ( relative to actor position ) * @z: Z co-ord to rotate actor around ( relative to actor position ) * * Rotates actor around the X axis. */ void clutter_actor_rotate_x (ClutterActor *self, gfloat angle, gint y, gint z) { g_return_if_fail (CLUTTER_IS_ACTOR (self)); /* FIXME: FIXED API Version */ self->priv->rxang = CLUTTER_FLOAT_TO_FIXED(angle); self->priv->rxy = y; self->priv->rxz = z; if (CLUTTER_ACTOR_IS_VISIBLE (self)) clutter_actor_queue_redraw (self); } /** * clutter_actor_rotate_y: * @self: A #ClutterActor * @angle: Angle of rotation * @x: X co-ord to rotate actor around ( relative to actor position ) * @z: Z co-ord to rotate actor around ( relative to actor position ) * * Rotates actor around the X axis. */ void clutter_actor_rotate_y (ClutterActor *self, gfloat angle, gint x, gint z) { g_return_if_fail (CLUTTER_IS_ACTOR (self)); /* FIXME: FIXED API VERSION */ self->priv->ryang = CLUTTER_FLOAT_TO_FIXED(angle); self->priv->ryx = x; self->priv->ryz = z; if (CLUTTER_ACTOR_IS_VISIBLE (self)) clutter_actor_queue_redraw (self); } /** * clutter_actor_set_clip: * @self: A #ClutterActor * @xoff: X offset of the clip rectangle * @yoff: Y offset of the clip rectangle * @width: Width of the clip rectangle * @height: Height of the clip rectangle * * Sets clip area in pixels for @self. */ void clutter_actor_set_clip (ClutterActor *self, gint xoff, gint yoff, gint width, gint height) { ClutterGeometry *clip; g_return_if_fail (CLUTTER_IS_ACTOR (self)); clip = &(self->priv->clip); clip->x = xoff; clip->y = yoff; clip->width = width; clip->height = height; self->priv->has_clip = TRUE; g_object_notify (G_OBJECT (self), "has-clip"); g_object_notify (G_OBJECT (self), "clip"); } /** * clutter_actor_remove_clip * @self: A #ClutterActor * * Removes clip area in pixels from @self. */ void clutter_actor_remove_clip (ClutterActor *self) { g_return_if_fail (CLUTTER_IS_ACTOR (self)); self->priv->has_clip = FALSE; g_object_notify (G_OBJECT (self), "has-clip"); } /** * clutter_actor_has_clip: * @self: a #ClutterActor * * Gets whether the actor has a clip set or not. * * Return value: %TRUE if the actor has a clip set. * * Since: 0.1.1 */ gboolean clutter_actor_has_clip (ClutterActor *self) { g_return_val_if_fail (CLUTTER_IS_ACTOR (self), FALSE); return self->priv->has_clip; } /** * clutter_actor_set_parent: * @self: A #ClutterActor * @parent: A new #ClutterActor parent * * Sets the parent of @self to @parent. The opposite function is * clutter_actor_unparent(). * * This function should not be used by applications but by custom * 'composite' actor sub classes. */ void clutter_actor_set_parent (ClutterActor *self, ClutterActor *parent) { g_return_if_fail (CLUTTER_IS_ACTOR (self)); g_return_if_fail (CLUTTER_IS_ACTOR (parent)); g_return_if_fail (self != parent); if (self->priv->parent_actor != NULL) { g_warning ("Cannot set a parent on an actor which has a parent.\n" "You must use clutter_actor_unparent() first.\n"); return; } if (CLUTTER_PRIVATE_FLAGS (self) & CLUTTER_ACTOR_IS_TOPLEVEL) { g_warning ("Cannot set a parent on a toplevel actor\n"); return; } g_object_ref_sink (self); self->priv->parent_actor = parent; g_signal_emit (self, actor_signals[PARENT_SET], 0, NULL); if (CLUTTER_ACTOR_IS_REALIZED (self->priv->parent_actor)) clutter_actor_realize (self); if (CLUTTER_ACTOR_IS_VISIBLE (self->priv->parent_actor) && CLUTTER_ACTOR_IS_VISIBLE (self)) { clutter_actor_queue_redraw (self); } } /** * clutter_actor_get_parent: * @self: A #ClutterActor * * Retrieves the parent of @self. * * Return Value: The #ClutterActor parent or NULL */ ClutterActor * clutter_actor_get_parent (ClutterActor *self) { g_return_val_if_fail (CLUTTER_IS_ACTOR (self), NULL); return self->priv->parent_actor; } /** * clutter_actor_unparent: * @self: a #ClutterActor * * This function should not be used in applications. It should be called by * implementations of group actors, to dissociate a child from the container. * * Since: 0.1.1 */ void clutter_actor_unparent (ClutterActor *self) { ClutterActor *old_parent; g_return_if_fail (CLUTTER_IS_ACTOR (self)); if (self->priv->parent_actor == NULL) return; /* just hide the actor if we are reparenting it */ if (CLUTTER_ACTOR_IS_REALIZED (self)) { if (CLUTTER_PRIVATE_FLAGS (self) & CLUTTER_ACTOR_IN_REPARENT) clutter_actor_hide (self); else clutter_actor_unrealize (self); } old_parent = self->priv->parent_actor; self->priv->parent_actor = NULL; g_signal_emit (self, actor_signals[PARENT_SET], 0, old_parent); g_object_unref (self); } /** * clutter_actor_reparent: * @self: a #ClutterActor * @new_parent: the new #ClutterActor parent * * This function resets the parent actor of @self. It is * logically equivalent to calling clutter_actory_unparent() * and clutter_actor_set_parent(). * * Since: 0.2 */ void clutter_actor_reparent (ClutterActor *self, ClutterActor *new_parent) { ClutterActorPrivate *priv; g_return_if_fail (CLUTTER_IS_ACTOR (self)); g_return_if_fail (CLUTTER_IS_ACTOR (new_parent)); g_return_if_fail (self != new_parent); if (CLUTTER_PRIVATE_FLAGS (self) & CLUTTER_ACTOR_IS_TOPLEVEL) { g_warning ("Cannot set a parent on a toplevel actor\n"); return; } priv = self->priv; if (priv->parent_actor != new_parent) { ClutterActor *old_parent; /* if the actor and the parent have already been realized, * mark the actor as reparenting, so that clutter_actor_unparent() * just hides the actor instead of unrealize it. */ if (CLUTTER_ACTOR_IS_REALIZED (self) && CLUTTER_ACTOR_IS_REALIZED (new_parent)) { CLUTTER_SET_PRIVATE_FLAGS (self, CLUTTER_ACTOR_IN_REPARENT); } old_parent = priv->parent_actor; g_object_ref (self); /* FIXME: below assumes only containers can reparent */ clutter_container_remove_actor (CLUTTER_CONTAINER (priv->parent_actor), self); clutter_container_add_actor (CLUTTER_CONTAINER (new_parent), self); g_object_unref (self); if (CLUTTER_PRIVATE_FLAGS (self) & CLUTTER_ACTOR_IN_REPARENT) { CLUTTER_UNSET_PRIVATE_FLAGS (self, CLUTTER_ACTOR_IN_REPARENT); clutter_actor_queue_redraw (self); } } } /** * clutter_actor_raise: * @self: A #ClutterActor * @below: A #ClutterActor to raise above. * * Puts @self above @below. * Both actors must have the same parent. */ void clutter_actor_raise (ClutterActor *self, ClutterActor *below) { ClutterActor *parent; g_return_if_fail (CLUTTER_IS_ACTOR (self)); parent = clutter_actor_get_parent (self); if (!parent) { g_warning ("Actor of type %s is not inside a group", g_type_name (G_OBJECT_TYPE (self))); return; } if (below) { if (parent != clutter_actor_get_parent (below)) { g_warning ("Actor of type %s is not in the same " "group of actor of type %s", g_type_name (G_OBJECT_TYPE (self)), g_type_name (G_OBJECT_TYPE (below))); return; } } clutter_group_raise (CLUTTER_GROUP (parent), self, below); } /** * clutter_actor_lower: * @self: A #ClutterActor * @above: A #ClutterActor to lower below * * Puts @self below @above. * Both actors must have the same parent. */ void clutter_actor_lower (ClutterActor *self, ClutterActor *above) { ClutterActor *parent; g_return_if_fail (CLUTTER_IS_ACTOR(self)); parent = clutter_actor_get_parent (self); if (!parent) { g_warning ("Actor of type %s is not inside a group", g_type_name (G_OBJECT_TYPE (self))); return; } if (above) { if (parent != clutter_actor_get_parent (above)) { g_warning ("Actor of type %s is not in the same " "group of actor of type %s", g_type_name (G_OBJECT_TYPE (self)), g_type_name (G_OBJECT_TYPE (above))); return; } } /* FIXME: group_lower should be an overidable method ? */ clutter_group_lower (CLUTTER_GROUP (parent), self, above); } /** * clutter_actor_raise_top: * @self: A #ClutterActor * * Raises @self to the top. */ void clutter_actor_raise_top (ClutterActor *self) { clutter_actor_raise (self, NULL); } /** * clutter_actor_lower_bottom: * @self: A #ClutterActor * * Lowers @self to the bottom. */ void clutter_actor_lower_bottom (ClutterActor *self) { clutter_actor_lower (self, NULL); } /* * ClutterGemoetry */ static ClutterGeometry* clutter_geometry_copy (const ClutterGeometry *geometry) { ClutterGeometry *result = g_new (ClutterGeometry, 1); *result = *geometry; return result; } GType clutter_geometry_get_type (void) { static GType our_type = 0; if (our_type == 0) our_type = g_boxed_type_register_static ( g_intern_static_string ("ClutterGeometry"), (GBoxedCopyFunc) clutter_geometry_copy, (GBoxedFreeFunc) g_free); return our_type; } /* * ClutterVertices */ static ClutterVertex* clutter_vertex_copy (const ClutterVertex *vertex) { ClutterVertex *result = g_new (ClutterVertex, 1); *result = *vertex; return result; } GType clutter_vertex_get_type (void) { static GType our_type = 0; if (our_type == 0) our_type = g_boxed_type_register_static ( g_intern_static_string ("ClutterVertex"), (GBoxedCopyFunc) clutter_vertex_copy, (GBoxedFreeFunc) g_free); return our_type; } /* * ClutterActorBox */ static ClutterActorBox * clutter_actor_box_copy (const ClutterActorBox *box) { ClutterActorBox *result = g_new (ClutterActorBox, 1); *result = *box; return result; } GType clutter_actor_box_get_type (void) { static GType our_type = 0; if (our_type == 0) our_type = g_boxed_type_register_static ( g_intern_static_string ("ClutterActorBox"), (GBoxedCopyFunc) clutter_actor_box_copy, (GBoxedFreeFunc) g_free); return our_type; }