// Render an object to the main window
void backdrop_render_object(
BackdropInfo *info,
BackdropObject *object,
UWORD flags)
{
// Lock window
GetSemaphore(&info->window_lock,SEMF_EXCLUSIVE,0);
// Window open?
if (info->window)
{
// Install clip?
if (flags&BRENDERF_CLIP && info->clip_region)
InstallClipRegion(info->window->WLayer,info->clip_region);
// Draw object
backdrop_draw_object(
info,
object,
flags|BRENDERF_REAL,
&info->rp,
object->pos.Left,
object->pos.Top);
// Remove clip region
if (flags&BRENDERF_CLIP && info->clip_region)
InstallClipRegion(info->window->WLayer,0);
}
// Unlock window
FreeSemaphore(&info->window_lock);
}
// Start dragging an object
BOOL backdrop_drag_object(
BackdropInfo *info,
BackdropObject *object)
{
struct Image *image;
ULONG flags=0;
// Is object already being dragged?
if (object->drag_info) return 1;
// Is there a select image?
if (object->icon->do_Gadget.SelectRender &&
(object->icon->do_Gadget.Flags&GFLG_GADGHIMAGE))
{
image=(struct Image *)object->icon->do_Gadget.SelectRender;
}
// No
else image=(struct Image *)object->icon->do_Gadget.GadgetRender;
// Get flags
if (info->flags&BDIF_CUSTOM_DRAG)
{
// Custom drag
flags=DRAGF_CUSTOM;
// Opaque?
if (environment->env->desktop_flags&DESKTOPF_QUICK_DRAG) flags|=DRAGF_NO_MASK;
}
// Get drag info
if (!(object->drag_info=
GetDragInfo(
info->window,
&GUI->drag_screen_rp,
(image->Width<object->pos.Width)?object->pos.Width:image->Width,
(image->Height<object->pos.Height)?object->pos.Height:image->Height,
flags)))
return 0;
// Get image to drag
backdrop_draw_object(info,object,0,&object->drag_info->drag_rp,0,0);
// Get mask
if (environment->env->desktop_flags&DESKTOPF_QUICK_DRAG)
object->drag_info->flags|=DRAGF_OPAQUE;
else
if (environment->env->desktop_flags&DESKTOPF_TRANSPARENCY)
object->drag_info->flags|=DRAGF_TRANSPARENT;
else
object->drag_info->flags|=DRAGF_TRANSPARENT|DRAGF_OPAQUE;
GetDragMask(object->drag_info);
return 1;
}
// Show the backdrop objects
void backdrop_show_objects(BackdropInfo *info,UWORD flags)
{
BackdropObject *object;
// Lock backdrop list
lock_listlock(&info->objects,0);
// Lock window
GetSemaphore(&info->window_lock,SEMF_EXCLUSIVE,0);
// Window open?
if (info->window)
{
// Are we in a refresh?
if (flags&BDSF_IN_REFRESH)
{
// Lock layers
#ifdef LOCKLAYER_OK
LockScreenLayer(info->window->WScreen);
#else
Forbid();
#endif
// End refresh temporarily
EndRefresh(info->window,FALSE);
// Install new clip region if we have it
if (info->clip_region)
InstallClipRegion(info->window->WLayer,info->clip_region);
// Continue refresh
BeginRefresh(info->window);
}
// Or, are we meant to be refreshing?
else
if (flags&BDSF_REFRESH)
{
// Start refresh here?
if ((flags&BDSF_REFRESH_DONE)==BDSF_REFRESH_DONE)
{
// Lock layers
#ifdef LOCKLAYER_OK
LockScreenLayer(info->window->WScreen);
#else
Forbid();
#endif
}
// And our region with damagelist
if (info->clip_region)
AndRegionRegion(info->clip_region,info->window->WLayer->DamageList);
// Begin the refresh
BeginRefresh(info->window);
}
// Install clip region if we have it
else
if (!(flags&BDSF_NO_CLIP) && info->clip_region)
InstallClipRegion(info->window->WLayer,info->clip_region);
// Clear backdrop window
if (flags&BDSF_CLEAR)
{
EraseRect(&info->rp,
info->size.MinX,
info->size.MinY,
info->size.MaxX,
info->size.MaxY);
}
// Not just clearing?
if ((flags&BDSF_CLEAR_ONLY)!=BDSF_CLEAR_ONLY)
{
// Go through backdrop list (backwards)
for (object=(BackdropObject *)info->objects.list.lh_TailPred;
object->node.ln_Pred;
object=(BackdropObject *)object->node.ln_Pred)
{
// Reset?
if (flags&BDSF_RESET)
{
// Need to get masks?
if (!backdrop_icon_border(object) &&
!object->image_mask[0])
{
// Get masks for this icon
backdrop_get_masks(object);
}
}
// Valid position?
if (!(object->flags&BDOF_NO_POSITION))
{
// Render this object
backdrop_draw_object(
info,
object,
BRENDERF_REAL,
&info->rp,
object->pos.Left,
object->pos.Top);
}
}
}
// Refresh?
if (flags&BDSF_REFRESH)
{
EndRefresh(info->window,((flags&BDSF_REFRESH_DONE)==BDSF_REFRESH_DONE)?TRUE:FALSE);
// End refresh here?
if ((flags&BDSF_REFRESH_DONE)==BDSF_REFRESH_DONE)
{
// Unlock layers
#ifdef LOCKLAYER_OK
UnlockScreenLayer(info->window->WScreen);
#else
Permit();
#endif
}
}
// In refresh?
else
if (flags&BDSF_IN_REFRESH)
{
// End refresh temporarily
EndRefresh(info->window,FALSE);
// Remove clip region
if (info->clip_region)
InstallClipRegion(info->window->WLayer,0);
// Continue refresh
BeginRefresh(info->window);
// Unlock layers
#ifdef LOCKLAYER_OK
UnlockScreenLayer(info->window->WScreen);
#else
Permit();
#endif
}
// Remove clip region
else
if (!(flags&BDSF_NO_CLIP) && info->clip_region)
InstallClipRegion(info->window->WLayer,0);
// Update virtual size
if (flags&BDSF_RECALC) backdrop_calc_virtual(info);
}
// Unlock window
FreeSemaphore(&info->window_lock);
// Unlock backdrop list
unlock_listlock(&info->objects);
}