/* Allocate position and size of actor and its children */
static void _xfdashboard_viewpad_allocate(ClutterActor *self,
const ClutterActorBox *inBox,
ClutterAllocationFlags inFlags)
{
XfdashboardViewpadPrivate *priv=XFDASHBOARD_VIEWPAD(self)->priv;
ClutterActorClass *actorClass=CLUTTER_ACTOR_CLASS(xfdashboard_viewpad_parent_class);
gfloat viewWidth, viewHeight;
gfloat vScrollbarWidth, vScrollbarHeight;
gfloat hScrollbarWidth, hScrollbarHeight;
gboolean hScrollbarVisible, vScrollbarVisible;
ClutterActorBox *box;
gfloat x, y, w, h;
/* Chain up to store the allocation of the actor */
if(actorClass->allocate) actorClass->allocate(self, inBox, inFlags);
/* Initialize largest possible allocation for view and determine
* real size of view to show. The real size is used to determine
* scroll bar visibility if policy is automatic */
viewWidth=clutter_actor_box_get_width(inBox);
viewHeight=clutter_actor_box_get_height(inBox);
/* Determine visibility of scroll bars */
hScrollbarVisible=FALSE;
if(priv->hScrollbarPolicy==XFDASHBOARD_POLICY_ALWAYS ||
(priv->hScrollbarPolicy==XFDASHBOARD_POLICY_AUTOMATIC &&
xfdashboard_scrollbar_get_range(XFDASHBOARD_SCROLLBAR(priv->hScrollbar))>viewWidth))
{
hScrollbarVisible=TRUE;
}
if(xfdashboard_view_get_fit_mode(XFDASHBOARD_VIEW(priv->activeView))==XFDASHBOARD_FIT_MODE_HORIZONTAL ||
xfdashboard_view_get_fit_mode(XFDASHBOARD_VIEW(priv->activeView))==XFDASHBOARD_FIT_MODE_BOTH)
{
hScrollbarVisible=FALSE;
}
vScrollbarVisible=FALSE;
if(priv->vScrollbarPolicy==XFDASHBOARD_POLICY_ALWAYS ||
(priv->vScrollbarPolicy==XFDASHBOARD_POLICY_AUTOMATIC &&
xfdashboard_scrollbar_get_range(XFDASHBOARD_SCROLLBAR(priv->vScrollbar))>viewHeight))
{
vScrollbarVisible=TRUE;
}
if(xfdashboard_view_get_fit_mode(XFDASHBOARD_VIEW(priv->activeView))==XFDASHBOARD_FIT_MODE_VERTICAL ||
xfdashboard_view_get_fit_mode(XFDASHBOARD_VIEW(priv->activeView))==XFDASHBOARD_FIT_MODE_BOTH)
{
vScrollbarVisible=FALSE;
}
/* Set allocation for visible scroll bars */
vScrollbarWidth=0.0f;
vScrollbarHeight=viewHeight;
clutter_actor_get_preferred_width(priv->vScrollbar, -1, NULL, &vScrollbarWidth);
hScrollbarWidth=viewWidth;
hScrollbarHeight=0.0f;
clutter_actor_get_preferred_height(priv->hScrollbar, -1, NULL, &hScrollbarHeight);
if(hScrollbarVisible && vScrollbarVisible)
{
vScrollbarHeight-=hScrollbarHeight;
hScrollbarWidth-=vScrollbarWidth;
}
if(vScrollbarVisible==FALSE) box=clutter_actor_box_new(0, 0, 0, 0);
else box=clutter_actor_box_new(viewWidth-vScrollbarWidth, 0, viewWidth, vScrollbarHeight);
clutter_actor_allocate(priv->vScrollbar, box, inFlags);
clutter_actor_box_free(box);
if(hScrollbarVisible==FALSE) box=clutter_actor_box_new(0, 0, 0, 0);
else box=clutter_actor_box_new(0, viewHeight-hScrollbarHeight, hScrollbarWidth, viewHeight);
clutter_actor_allocate(priv->hScrollbar, box, inFlags);
clutter_actor_box_free(box);
/* Reduce allocation for view by any visible scroll bar
* and set allocation and clipping of view
*/
if(priv->activeView)
{
/* Set allocation */
if(vScrollbarVisible) viewWidth-=vScrollbarWidth;
if(hScrollbarVisible) viewHeight-=hScrollbarHeight;
x=y=0.0f;
if(clutter_actor_has_clip(CLUTTER_ACTOR(priv->activeView)))
{
clutter_actor_get_clip(CLUTTER_ACTOR(priv->activeView), &x, &y, NULL, NULL);
}
switch(xfdashboard_view_get_fit_mode(XFDASHBOARD_VIEW(priv->activeView)))
{
case XFDASHBOARD_FIT_MODE_BOTH:
w=viewWidth;
h=viewHeight;
break;
case XFDASHBOARD_FIT_MODE_HORIZONTAL:
w=viewWidth;
clutter_actor_get_preferred_height(CLUTTER_ACTOR(priv->activeView), w, NULL, &h);
break;
case XFDASHBOARD_FIT_MODE_VERTICAL:
h=viewHeight;
clutter_actor_get_preferred_width(CLUTTER_ACTOR(priv->activeView), h, NULL, &w);
break;
default:
clutter_actor_get_preferred_size(CLUTTER_ACTOR(priv->activeView), NULL, NULL, &w, &h);
break;
}
box=clutter_actor_box_new(0, 0, w, h);
clutter_actor_allocate(CLUTTER_ACTOR(priv->activeView), box, inFlags);
clutter_actor_box_free(box);
clutter_actor_set_clip(CLUTTER_ACTOR(priv->activeView), x, y, viewWidth, viewHeight);
}
/* Only set value if it changes */
if(priv->hScrollbarVisible!=hScrollbarVisible)
{
/* Set new value */
priv->hScrollbarVisible=hScrollbarVisible;
/* Notify about property change */
g_object_notify_by_pspec(G_OBJECT(self), XfdashboardViewpadProperties[PROP_HSCROLLBAR_VISIBLE]);
}
if(priv->vScrollbarVisible!=vScrollbarVisible)
{
/* Set new value */
priv->vScrollbarVisible=vScrollbarVisible;
/* Notify about property change */
g_object_notify_by_pspec(G_OBJECT(self), XfdashboardViewpadProperties[PROP_VSCROLLBAR_VISIBLE]);
}
}
/* Re-layout and allocate children of container we manage */
static void _xfdashboard_fill_box_layout_allocate(ClutterLayoutManager *inLayoutManager,
ClutterContainer *inContainer,
const ClutterActorBox *inAllocation,
ClutterAllocationFlags inFlags)
{
XfdashboardFillBoxLayout *self;
XfdashboardFillBoxLayoutPrivate *priv;
ClutterActor *child;
ClutterActorIter iter;
gfloat parentWidth, parentHeight;
gfloat homogeneousSize;
gfloat x, y, w, h;
gfloat aspectRatio;
ClutterActorBox childAllocation;
g_return_if_fail(XFDASHBOARD_IS_FILL_BOX_LAYOUT(inLayoutManager));
g_return_if_fail(CLUTTER_IS_CONTAINER(inContainer));
self=XFDASHBOARD_FILL_BOX_LAYOUT(inLayoutManager);
priv=self->priv;
/* Get dimension of allocation */
parentWidth=clutter_actor_box_get_width(inAllocation);
parentHeight=clutter_actor_box_get_height(inAllocation);
/* If homogeneous determine sizes for all children */
if(priv->isHomogeneous==TRUE)
{
if(priv->orientation==CLUTTER_ORIENTATION_HORIZONTAL)
{
_xfdashboard_fill_box_layout_get_largest_sizes(self, inContainer, NULL, &homogeneousSize, NULL, NULL);
}
else
{
_xfdashboard_fill_box_layout_get_largest_sizes(self, inContainer, NULL, NULL, NULL, &homogeneousSize);
}
}
/* Iterate through children and set their sizes */
x=y=0.0f;
clutter_actor_iter_init(&iter, CLUTTER_ACTOR(inContainer));
while(clutter_actor_iter_next(&iter, &child))
{
/* Only set sizes on visible children */
if(!clutter_actor_is_visible(child)) continue;
/* Calculate and set new allocation of child */
if(priv->isHomogeneous==FALSE)
{
clutter_actor_get_size(CLUTTER_ACTOR(inContainer), &w, &h);
if(priv->orientation==CLUTTER_ORIENTATION_HORIZONTAL)
{
aspectRatio=w/h;
h=parentHeight;
w=h*aspectRatio;
}
else
{
aspectRatio=h/w;
w=parentWidth;
h=w*aspectRatio;
}
}
else
{
if(priv->orientation==CLUTTER_ORIENTATION_HORIZONTAL)
{
w=homogeneousSize;
h=parentHeight;
}
else
{
w=parentWidth;
h=homogeneousSize;
}
}
/* Set new allocation of child */
childAllocation.x1=ceil(x);
childAllocation.y1=ceil(y);
childAllocation.x2=ceil(childAllocation.x1+w);
childAllocation.y2=ceil(childAllocation.y1+h);
clutter_actor_allocate(child, &childAllocation, inFlags);
/* Set up for next child */
if(priv->orientation==CLUTTER_ORIENTATION_HORIZONTAL) x+=(w+priv->spacing);
else y+=(h+priv->spacing);
}
}
