// Group handler
void __saveds backdrop_group_handler(void)
{
IPCData *ipc;
GroupData *group=0;
// Do group
if (ipc=IPC_ProcStartup((ULONG *)&group,backdrop_group_init))
{
// Read objects
SetBusyPointer(group->window);
backdrop_read_group_objects(group);
ClearPointer(group->window);
// Event loop
FOREVER
{
IPCMessage *msg;
BOOL quit_flag=0;
// Got an AppWindow?
if (group->appwindow)
{
DOpusAppMessage *amsg;
BOOL beep=0;
// AppMessages?
while (amsg=(DOpusAppMessage *)GetMsg(group->appport))
{
short arg;
char path[256];
BackdropObject *drop_obj;
// Lock backdrop list
lock_listlock(&group->info->objects,1);
// Set busy pointer
if (group->window) SetBusyPointer(group->window);
// Dropped on an object?
if (drop_obj=backdrop_get_object(group->info,amsg->da_Msg.am_MouseX,amsg->da_Msg.am_MouseY,0))
{
USHORT qual;
// Get qualifiers
qual=(InputBase)?PeekQualifier():0;
// Is shift/alt down?
if (qual&(IEQUALIFIER_LSHIFT|IEQUALIFIER_LALT)==(IEQUALIFIER_LSHIFT|IEQUALIFIER_LALT))
{
// Get path of first file
GetWBArgPath(&amsg->da_Msg.am_ArgList[0],path,256);
// Replace the image
backdrop_replace_icon_image(group->info,path,drop_obj);
}
// Run program with args
else
backdrop_object_open(
group->info,
drop_obj,
0,
0,
amsg->da_Msg.am_NumArgs,
amsg->da_Msg.am_ArgList);
}
// Otherwise, adding objects to the group
else
for (arg=0;arg<amsg->da_Msg.am_NumArgs;arg++)
{
// Valid name?
if (*amsg->da_Msg.am_ArgList[arg].wa_Name)
{
short x,y;
// Get full path name
GetWBArgPath(&amsg->da_Msg.am_ArgList[arg],path,256);
// Default to no position
x=-1;
y=-1;
// Dopus app message?
if (CheckAppMessage(amsg))
{
// Get icon position
x=amsg->da_DragOffset.x+amsg->da_Msg.am_MouseX+amsg->da_DropPos[arg].x;
y=amsg->da_DragOffset.y+amsg->da_Msg.am_MouseY+amsg->da_DropPos[arg].y;
}
// Add group object
backdrop_group_add_object(group->name,group->info,path,x,y);
}
// Otherwise, set beep flag for error
else
if (!beep)
{
beep=1;
DisplayBeep(group->window->WScreen);
}
}
// Clear busy pointer
if (group->window) ClearPointer(group->window);
// Unlock backdrop list
unlock_listlock(&group->info->objects);
// Reply to message
ReplyMsg((struct Message *)amsg);
}
}
// Icon notification
if (group->info->notify_req)
{
DOpusNotify *notify;
// Get notify message
if (notify=(DOpusNotify *)GetMsg(group->info->notify_port))
backdrop_check_notify(group->info,notify,0);
}
// IPC messages?
while (msg=(IPCMessage *)GetMsg(ipc->command_port))
{
// Look at message
switch (msg->command)
{
// Activate
case IPC_ACTIVATE:
// Bring window to front
if (group->window)
backdrop_show_group(group);
break;
// Quit
case IPC_QUIT:
quit_flag=1;
group->got_quit=1;
break;
// Hide
case IPC_HIDE:
backdrop_hide_group(group);
break;
// Show
case IPC_SHOW:
group->screen=(struct Screen *)msg->data;
backdrop_show_group(group);
break;
// Reset (menus)
case IPC_RESET:
// Gotta window?
if (group->window)
{
// Reset menus?
if (msg->flags)
{
display_free_menu(group->window);
display_get_menu(group->window);
}
// Fix menus
display_fix_menu(group->window,WINDOW_GROUP,0);
}
break;
// New font
case GROUP_NEW_FONT:
// Get new font
backdrop_get_font(group->info);
// Redraw objects
backdrop_show_objects(group->info,BDSF_CLEAR|BDSF_RESET);
break;
// New name
case GROUP_NEW_NAME:
// Copy name
strcpy(group->name,msg->data_free);
// Update window title
if (group->window) SetWindowTitles(group->window,group->name,(char *)-1);
break;
// Add a new icon
case GROUP_ADD_ICON:
// Lock backdrop list
lock_listlock(&group->info->objects,1);
// Set busy pointer
if (group->window) SetBusyPointer(group->window);
// Add object
backdrop_group_add_object(group->name,group->info,msg->data_free,-1,-1);
// Clear busy pointer
if (group->window) ClearPointer(group->window);
// Unlock backdrop list
unlock_listlock(&group->info->objects);
break;
// New backfill pattern
case LISTER_BACKFILL_CHANGE:
// Window open?
if (group->window)
{
// Install appropriate hook
InstallLayerHook(
group->window->WLayer,
(msg->flags)?&group->pattern.hook:LAYERS_BACKFILL);
// Redraw window
erase_window(group->window);
// Redraw icons
backdrop_show_objects(group->info,0);
}
break;
// Delete from group
case GROUP_DELETE:
SetBusyPointer(group->window);
backdrop_remove_group_objects(group,(BackdropObject *)msg->data);
ClearPointer(group->window);
break;
// Help
case IPC_HELP:
// Show help for group
help_show_help(HELP_PROGRAM_GROUP,0);
break;
// Do a function
case LISTER_DO_FUNCTION:
// Arrange icons?
if (msg->data>=(APTR)MENU_LISTER_ARRANGE_NAME &&
msg->data<=(APTR)MENU_LISTER_ARRANGE_SIZE)
{
// Do cleanup
backdrop_cleanup(group->info,BSORT_NAME+(((ULONG)msg->data)-MENU_LISTER_ARRANGE_NAME),0);
}
break;
}
// Reply to message
IPC_Reply(msg);
}
// Is window open?
if (group->window)
{
struct IntuiMessage *imsg;
// Check timer
if (CheckTimer(group->timer))
{
// Dragging something?
if (group->info->flags&BDIF_DRAGGING)
{
// Check for deadlocks
if (group->info->last_tick==group->info->tick_count)
{
// Stop drag
backdrop_stop_drag(group->info);
}
// Remember tick count
group->info->last_tick=group->info->tick_count;
}
// Re-start timer
StartTimer(group->timer,0,500000);
}
// Window messages
while (imsg=(struct IntuiMessage *)GetMsg(group->window->UserPort))
{
struct IntuiMessage msg_copy;
struct MenuItem *item;
// Copy message
msg_copy=*imsg;
// Menu verify?
if (imsg->Class==IDCMP_MENUVERIFY)
{
// See if we want to swallow it
if (!backdrop_test_rmb(group->info,imsg,&msg_copy,TRUE))
{
// Did event happen over the window?
if (imsg->MouseX>=0 &&
imsg->MouseY>=0 &&
imsg->MouseX<group->window->Width &&
imsg->MouseY<group->window->Height &&
imsg->Qualifier&IEQUALIFIER_RBUTTON)
{
// Cancel menu event
imsg->Code=MENUCANCEL;
// Change our copy to MOUSEBUTTONS
msg_copy.Class=IDCMP_MOUSEBUTTONS;
msg_copy.Code=MENUDOWN;
// Kludge for MagicMenu
if (msg_copy.Seconds==0)
CurrentTime(&msg_copy.Seconds,&msg_copy.Micros);
}
}
}
// Resize/refresh?
if (imsg->Class==IDCMP_NEWSIZE ||
imsg->Class==IDCMP_REFRESHWINDOW)
{
// Handle message
backdrop_idcmp(group->info,imsg,0);
// Reply to message
ReplyMsg((struct Message *)imsg);
continue;
}
// Reply to message
ReplyMsg((struct Message *)imsg);
// Is it a backdrop message?
if (backdrop_idcmp(group->info,&msg_copy,0))
continue;
// Look at message class
switch (msg_copy.Class)
{
// Window closed
case IDCMP_CLOSEWINDOW:
quit_flag=1;
break;
// Window is inactive
case IDCMP_INACTIVEWINDOW:
// Abort timer if running
StopTimer(group->timer);
break;
// Window is active
case IDCMP_ACTIVEWINDOW:
// Start timer if not running
StartTimer(group->timer,1,0);
break;
// Key press
case IDCMP_RAWKEY:
// Help?
if (msg_copy.Code==0x5f &&
!(msg_copy.Qualifier&VALID_QUALIFIERS))
{
help_get_help(
msg_copy.MouseX+group->window->LeftEdge,
msg_copy.MouseY+group->window->TopEdge,
msg_copy.Qualifier);
}
// Close?
else
if (msg_copy.Code==0x45 &&
msg_copy.Qualifier&IEQUAL_ANYSHIFT) quit_flag=1;
break;
// Button pressed
case IDCMP_MOUSEBUTTONS:
// Right button?
if (msg_copy.Code==MENUDOWN)
{
USHORT res;
// Do popup menu
if (group->popup &&
(res=DoPopUpMenu(group->window,&group->popup->ph_Menu,NULL,MENUDOWN))!=(USHORT)-1)
{
// Help?
if (res&POPUP_HELPFLAG)
{
// Get help ID
res&=~POPUP_HELPFLAG;
// Do help
help_menu_help(res,0);
break;
}
// Do the function
quit_flag=backdrop_group_do_function(group,res,0);
}
}
break;
// Menu event
case IDCMP_MENUPICK:
case IDCMP_MENUHELP:
{
struct Menu *oldstrip=group->window->MenuStrip;
USHORT nextselect;
// Get item
nextselect=msg_copy.Code;
while (item=ItemAddress(group->window->MenuStrip,nextselect))
{
// get next
nextselect=item->NextSelect;
// Help?
if (msg_copy.Class==IDCMP_MENUHELP)
{
help_menu_help((long)GTMENUITEM_USERDATA(item),0);
break;
}
// Do the function
quit_flag=backdrop_group_do_function(group,(ULONG)GTMENUITEM_USERDATA(item),item);
// Check valid next
if (!nextselect || !group->window || oldstrip!=group->window->MenuStrip)
break;
}
}
break;
}
}
}
// Check quit flag
if (quit_flag) break;
// Wait for event
Wait( 1<<ipc->command_port->mp_SigBit|
1<<group->timer->port->mp_SigBit|
((group->info->notify_req)?(1<<group->info->notify_port->mp_SigBit):0)|
((group->window)?(1<<group->window->UserPort->mp_SigBit):0)|
((group->appwindow)?(1<<group->appport->mp_SigBit):0));
}
// Close window
backdrop_free_group(group);
// Send goodbye
IPC_Goodbye(ipc,&main_ipc,0);
}
// Scroll the icons
void backdrop_scroll_objects(BackdropInfo *info,short off_x,short off_y)
{
// Lock window
GetSemaphore(&info->window_lock,SEMF_EXCLUSIVE,0);
// Window open?
if (info->window)
{
short damage=0,clear=0;
// Bounds-check the deltas
if (off_x<0 && off_x<-RECTWIDTH(&info->size))
clear=1;
else
if (off_x>0 && off_x>RECTWIDTH(&info->size))
clear=1;
else
if (off_y<0 && off_y<-RECTHEIGHT(&info->size))
clear=1;
else
if (off_y>0 && off_y>RECTHEIGHT(&info->size))
clear=1;
// Clear instead of scrolling?
if (clear)
{
// Clear the whole window
EraseRect(
info->window->RPort,
info->size.MinX,
info->size.MinY,
info->size.MaxX,
info->size.MaxY);
}
// Scroll
else
{
// Check for 39
if(((struct Library *)GfxBase)->lib_Version>=39)
{
// Scroll backdrop window
ScrollRasterBF(
info->window->RPort,
off_x,off_y,
info->size.MinX,
info->size.MinY,
info->size.MaxX,
info->size.MaxY);
}
// No backfills
else
{
// Scroll backdrop window
ScrollRaster(
info->window->RPort,
off_x,off_y,
info->size.MinX,
info->size.MinY,
info->size.MaxX,
info->size.MaxY);
}
// Damaged simple-refresh?
if (info->window->Flags&WFLG_SIMPLE_REFRESH &&
info->window->WLayer->Flags&LAYERREFRESH)
{
// Forbid
#ifdef LOCKLAYER_OK
LockScreenLayer(info->window->WScreen);
#else
Forbid();
#endif
// Begin refreshing
BeginRefresh(info->window);
// Clear the new bits
EraseRect(
info->window->RPort,
info->size.MinX,
info->size.MinY,
info->size.MaxX,
info->size.MaxY);
// End refreshing for the moment
EndRefresh(info->window,FALSE);
damage=1;
}
}
// Got temporary region?
if (info->temp_region)
{
struct Rectangle rect;
// Get refresh region
rect.MinX=(off_x==0)?info->size.MinX:((off_x>0)?info->size.MaxX-off_x:info->size.MinX);
rect.MaxX=(off_x==0)?info->size.MaxX:((off_x>0)?info->size.MaxX:info->size.MinX-off_x);
rect.MinY=(off_y==0)?info->size.MinY:((off_y>0)?info->size.MaxY-off_y:info->size.MinY);
rect.MaxY=(off_y==0)?info->size.MaxY:((off_y>0)?info->size.MaxY:info->size.MinY-off_y);
// Bounds check region
if (rect.MinX<info->size.MinX) rect.MinX=info->size.MinX;
if (rect.MinY<info->size.MinY) rect.MinY=info->size.MinY;
if (rect.MaxX>info->size.MaxX) rect.MaxX=info->size.MaxX;
if (rect.MaxY>info->size.MaxY) rect.MaxY=info->size.MaxY;
// Add to damage list?
if (damage)
{
// Or rectangle in
OrRectRegion(info->window->WLayer->DamageList,&rect);
}
// Manually refresh
else
{
// Set refresh region
ClearRegion(info->temp_region);
OrRectRegion(info->temp_region,&rect);
// Install region
InstallClipRegion(info->window->WLayer,info->temp_region);
}
}
// Manual refresh?
if (!damage)
{
// Refresh
backdrop_show_objects(info,BDSF_NO_CLIP);
// Remove clip region
InstallClipRegion(info->window->WLayer,0);
}
// Automatic refresh
else
{
// Lister?
if (info->lister)
lister_refresh_callback(IDCMP_REFRESHWINDOW,info->window,info->lister);
// Other type
else
{
struct IntuiMessage msg;
// Fake IntuiMessage
msg.Class=IDCMP_REFRESHWINDOW;
// Handle refresh
backdrop_idcmp(info,&msg,0);
}
// Enable multi-tasking
#ifdef LOCKLAYER_OK
UnlockScreenLayer(info->window->WScreen);
#else
Permit();
#endif
}
}
// Unlock window
FreeSemaphore(&info->window_lock);
}
