// Handle backdrop icon idcmp stuff
BOOL backdrop_idcmp(BackdropInfo *info,struct IntuiMessage *msg,unsigned short flags)
{
BOOL handled=1;
BOOL busy=0;
// Lister locked?
if (info->lister && info->lister->flags&LISTERF_LOCK) busy=1;
// Message class?
switch (msg->Class)
{
// Size change
case IDCMP_NEWSIZE:
backdrop_update_size(info);
break;
// Refresh window
case IDCMP_REFRESHWINDOW:
// If we haven't already refreshed
if (!(info->flags&BDIF_REFRESHED))
{
UWORD ref_flags;
// Get flags for refreshing
ref_flags=BDSF_REFRESH;
if (!(flags&BIDCMPF_LISTER)) ref_flags|=BDSF_REFRESH_DONE;
// From a resize?
if (info->flags&BDIF_NEW_SIZE) ref_flags|=BDSF_RECALC;
// Otherwise, check that size is ok
else backdrop_check_size(info);
// Refresh objects
backdrop_show_objects(info,ref_flags);
}
// Clear flags
info->flags&=~(BDIF_NEW_SIZE|BDIF_REFRESHED);
// Got a lister?
if (info->lister)
{
// Clear 'sized' flag in lister
info->lister->flags&=~LISTERF_RESIZED;
// Save event for lister too
if (flags&BIDCMPF_LISTER) handled=0;
}
break;
// Mouse moved
case IDCMP_MOUSEMOVE:
// Rubber banding?
if (info->flags&BDIF_RUBBERBAND)
{
short x,y;
// Get coordinates, clip to borders
x=info->window->MouseX;
y=info->window->MouseY;
if (x<info->size.MinX) x=info->size.MinX;
if (x>info->size.MaxX) x=info->size.MaxX;
if (y<info->size.MinY) y=info->size.MinY;
if (y>info->size.MaxY) y=info->size.MaxY;
// Have coordinates changed?
if (info->select.MaxX!=x ||
info->select.MaxY!=y)
{
// Erase old box
backdrop_rubber_band(info,0);
// New coordinates
info->select.MaxX=x;
info->select.MaxY=y;
// Show new box
backdrop_rubber_band(info,1);
}
break;
}
// Are we dragging something?
else
if (info->flags&BDIF_DRAGGING && info->last_sel_object)
{
// Show drag objects
backdrop_show_drag(
info,
info->last_sel_object,
info->window->WScreen->MouseX,
info->window->WScreen->MouseY);
break;
}
// No gadget down, or no real-time scrolling?
if (!info->down_gadget || !(environment->env->display_options&DISPOPTF_REALTIME_SCROLL))
{
// Not handled
handled=0;
break;
}
// Tick
case IDCMP_INTUITICKS:
// Tick?
if (msg->Class==IDCMP_INTUITICKS)
{
// Increment tick count
++info->tick_count;
// No gadget down?
if (!info->down_gadget)
{
// Turn ticks off if not dragging
if (!(info->flags&(BDIF_DRAGGING|BDIF_RUBBERBAND)))
ModifyIDCMP(info->window,info->window->IDCMPFlags&~IDCMP_INTUITICKS);
break;
}
// Ignore this gadget?
if (info->flags&BDIF_IGNORE_GADGET)
{
info->flags&=~BDIF_IGNORE_GADGET;
break;
}
}
// Fake gadget down
msg->IAddress=info->down_gadget;
// Gadget down
case IDCMP_GADGETDOWN:
// Store gadget
if (info->down_gadget!=(struct Gadget *)msg->IAddress)
{
info->down_gadget=(struct Gadget *)msg->IAddress;
info->flags|=BDIF_IGNORE_GADGET;
ModifyIDCMP(info->window,info->window->IDCMPFlags|IDCMP_INTUITICKS);
}
// Check gadget is selected
if (!(info->down_gadget->Flags&GFLG_SELECTED))
break;
// Look at gadget ID
switch (info->down_gadget->GadgetID)
{
// Up arrow
case GAD_VERT_ARROW_UP:
backdrop_scroll(info,0,-1);
break;
// Down arrow
case GAD_VERT_ARROW_DOWN:
backdrop_scroll(info,0,1);
break;
// Left arrow
case GAD_HORIZ_ARROW_LEFT:
backdrop_scroll(info,-1,0);
break;
// Right arrow
case GAD_HORIZ_ARROW_RIGHT:
backdrop_scroll(info,1,0);
break;
// Vertical slider
case GAD_VERT_SCROLLER:
if (environment->env->display_options&DISPOPTF_REALTIME_SCROLL)
backdrop_pos_slider(info,SLIDER_VERT);
break;
// Horizontal slider
case GAD_HORIZ_SCROLLER:
if (environment->env->display_options&DISPOPTF_REALTIME_SCROLL)
backdrop_pos_slider(info,SLIDER_HORZ);
break;
}
break;
// Gadget up
case IDCMP_GADGETUP:
info->down_gadget=0;
info->flags&=~BDIF_IGNORE_GADGET;
ModifyIDCMP(info->window,info->window->IDCMPFlags&~IDCMP_INTUITICKS);
// Look at gadget ID
switch (((struct Gadget *)msg->IAddress)->GadgetID)
{
// Vertical slider
case GAD_VERT_SCROLLER:
backdrop_pos_slider(info,SLIDER_VERT);
break;
// Horizontal slider
case GAD_HORIZ_SCROLLER:
backdrop_pos_slider(info,SLIDER_HORZ);
break;
// Another gadget
default:
handled=0;
break;
}
break;
// Mouse buttons
case IDCMP_MOUSEBUTTONS:
// Ignore if busy
if (busy) break;
// Clear down gadget
info->down_gadget=0;
info->flags&=~BDIF_IGNORE_GADGET;
ModifyIDCMP(info->window,info->window->IDCMPFlags&~IDCMP_INTUITICKS);
// Handle button
handled=backdrop_handle_button(info,msg,flags);
// Remember the last button pushed
info->last_button=msg->Code&~IECODE_UP_PREFIX;
break;
// Key press
case IDCMP_RAWKEY:
// Dragging something?
if (info->flags&(BDIF_RUBBERBAND|BDIF_DRAGGING))
{
// If escape is pressed, cancel drag
if (msg->Code==0x45) backdrop_stop_drag(info);
break;
}
// Title-barred lister?
if (info->lister && info->lister->more_flags&LISTERF_TITLEBARRED)
break;
// Not handled by default
handled=0;
// Look at key
switch (msg->Code)
{
// Space toggles icon selection
case 0x40:
// Lister not busy?
if (!busy)
{
BackdropObject *object;
// Lock backdrop list
lock_listlock(&info->objects,1);
// Turn off?
if (info->flags&BDIF_KEY_SELECTION)
{
// See if current selection is still valid
if ((object=find_backdrop_object(info,info->current_sel_object)))
{
// Clear selection flag and redraw
object->flags&=~BDOF_SELECTED;
backdrop_render_object(info,object,BRENDERF_CLIP);
}
// Clear selection pointer
info->current_sel_object=0;
info->flags&=~BDIF_KEY_SELECTION;
}
// Turn on
else
{
// Sort objects into position order
backdrop_sort_objects(info,0,0);
// Get first object
object=(BackdropObject *)info->objects.list.lh_Head;
if (object->node.ln_Succ)
{
// Set selection flag in new object and render
object->flags|=BDOF_SELECTED;
backdrop_render_object(info,object,BRENDERF_CLIP);
// Store object pointer
info->current_sel_object=object;
info->flags|=BDIF_KEY_SELECTION;
}
}
// Unlock backdrop list
unlock_listlock(&info->objects);
handled=1;
}
break;
// Cursor keys changes selection
case CURSORUP:
case CURSORDOWN:
case CURSORLEFT:
case CURSORRIGHT:
// In selection mode?
if (!busy && info->flags&BDIF_KEY_SELECTION)
{
BackdropObject *object=0,*lastobject;
short horiz=0;
// Lock backdrop list
lock_listlock(&info->objects,1);
// Horizontal movement?
if (msg->Code==CURSORLEFT || msg->Code==CURSORRIGHT) horiz=BSORT_HORIZ;
// Need to resort?
if ((horiz && !(info->flags&BDIF_LAST_SORT_HORIZ)) ||
(!horiz && info->flags&BDIF_LAST_SORT_HORIZ))
{
// Sort objects into position order
backdrop_sort_objects(info,horiz,0);
}
// See if current selection is still valid
if ((lastobject=find_backdrop_object(info,info->current_sel_object)))
{
// Down or right, get next object
if (msg->Code==CURSORDOWN || msg->Code==CURSORRIGHT)
object=(BackdropObject *)lastobject->node.ln_Succ;
// Up or left, get previous object
else
object=(BackdropObject *)lastobject->node.ln_Pred;
}
// Invalid object?
if (!object || !object->node.ln_Succ || !object->node.ln_Pred)
{
// Get first (or last) selection
if (object && !object->node.ln_Pred)
object=(BackdropObject *)info->objects.list.lh_TailPred;
else object=(BackdropObject *)info->objects.list.lh_Head;
}
// New object different from last?
if (object!=info->current_sel_object)
{
// Was there an old selection?
if (lastobject)
{
// Clear selection flag and redraw
lastobject->flags&=~BDOF_SELECTED;
backdrop_render_object(info,lastobject,BRENDERF_CLIP);
}
// New valid object?
if (object)
{
// Make sure object is visible
backdrop_make_visible(info,object);
// Set selection flag in new object and render
object->flags|=BDOF_SELECTED;
backdrop_render_object(info,object,BRENDERF_CLIP);
}
// Store object pointer
info->current_sel_object=object;
}
// Unlock backdrop list
unlock_listlock(&info->objects);
handled=1;
}
break;
// Return opens an icon
case 0x44:
// In selection mode?
if (!busy && info->flags&BDIF_KEY_SELECTION)
{
BackdropObject *object;
// Lock backdrop list
lock_listlock(&info->objects,0);
// See if current selection is still valid
if ((object=find_backdrop_object(info,info->current_sel_object)))
{
// Open object
info->last_sel_object=object;
backdrop_object_open(info,object,msg->Qualifier,1,0,0);
// Clear selection pointers
info->current_sel_object=0;
info->last_sel_object=0;
info->flags&=~BDIF_KEY_SELECTION;
// Deselect object
object->flags&=~BDOF_SELECTED;
backdrop_render_object(info,object,BRENDERF_CLIP);
}
// Unlock backdrop list
unlock_listlock(&info->objects);
handled=1;
}
break;
// Page up/Page down
case PAGEUP:
case PAGEDOWN:
{
ULONG oldpos,pos;
long newpos,diff;
// Get old position
GetAttr(PGA_Top,info->vert_scroller,&oldpos);
// Get new position
newpos=info->offset_y-info->area.MinY;
if (msg->Code==PAGEUP) newpos-=(info->size.MaxY-info->size.MinY)+1;
else newpos+=(info->size.MaxY-info->size.MinY)+1;
if (newpos<0) newpos=0;
// Update gadget
SetGadgetAttrs(info->vert_scroller,info->window,0,
PGA_Top,newpos,
TAG_END);
// Get new position
GetAttr(PGA_Top,info->vert_scroller,&pos);
// Change?
diff=oldpos-pos;
if (diff<0) diff=-diff;
if (diff>2)
{
// Update screen
backdrop_pos_slider(info,SLIDER_VERT);
}
handled=1;
}
break;
// Home/End
case HOME:
case END:
{
ULONG oldpos,pos;
long diff;
// Get old position
GetAttr(PGA_Top,info->horiz_scroller,&oldpos);
// Update gadget
SetGadgetAttrs(info->horiz_scroller,info->window,0,
PGA_Top,(msg->Code==HOME)?0:0xfffffff,
TAG_END);
// Get new position
GetAttr(PGA_Top,info->horiz_scroller,&pos);
// Change?
diff=oldpos-pos;
if (diff<0) diff=-diff;
if (diff>2)
{
// Update screen
backdrop_pos_slider(info,SLIDER_HORZ);
}
handled=1;
}
break;
}
break;
// Not handled
default:
handled=0;
break;
}
return handled;
}
// Stop dragging
BOOL backdrop_stop_drag(BackdropInfo *info)
{
BackdropObject *object;
BOOL ret=0;
// Rubber-banding?
if (info->flags&BDIF_RUBBERBAND)
{
// Erase box
backdrop_rubber_band(info,0);
// Clear flag and mouse reporting
info->flags&=~BDIF_RUBBERBAND;
info->window->Flags&=~(WFLG_REPORTMOUSE|WFLG_RMBTRAP);
// Turn ticks off
ModifyIDCMP(info->window,info->window->IDCMPFlags&~IDCMP_INTUITICKS);
// If icon positioning, unlock layers
if (GUI->flags&GUIF_DRAGGING)
{
UnlockLayers(&info->window->WScreen->LayerInfo);
GUI->flags&=~GUIF_DRAGGING;
}
}
// Dragging?
else
if (info->flags&BDIF_DRAGGING)
{
// Clear drag flag
info->flags&=~BDIF_DRAGGING;
// Are we dragging?
if (GUI->flags&GUIF_DRAGGING)
{
ULONG sec,mic,mic1,mic2;
// Get stop time
CurrentTime(&sec,&mic);
// Normal dragging?
if (!(info->flags&BDIF_CUSTOM_DRAG))
{
// Go through backdrop list
for (object=(BackdropObject *)info->objects.list.lh_Head;
object->node.ln_Succ;
object=(BackdropObject *)object->node.ln_Succ)
{
// Is object being dragged?
if (object->drag_info)
{
// Hide object
RemBob(&object->drag_info->bob);
}
}
}
// Draw GELs list
SortGList(&GUI->drag_screen_rp);
DrawDragList(&GUI->drag_screen_rp,&info->window->WScreen->ViewPort,(info->flags&BDIF_CUSTOM_DRAG)?DRAGF_CUSTOM|DRAGF_REMOVE:0);
// Clear drag flag
GUI->flags&=~GUIF_DRAGGING;
// Unlock layer
UnlockLayers(&info->window->WScreen->LayerInfo);
// Get drag time deltas
mic1=(sec*1000000)+mic;
mic2=(info->drag_sec*1000000)+info->drag_mic;
// If drag was less than a fifth of a second, nothing moves
if (mic1<mic2+200000) ret=1;
}
// Go through backdrop list
for (object=(BackdropObject *)info->objects.list.lh_Head;
object->node.ln_Succ;
object=(BackdropObject *)object->node.ln_Succ)
{
// Was object being dragged?
if (object->drag_info)
{
// Free drag
FreeDragInfo(object->drag_info);
object->drag_info=0;
}
}
// Start menu actions, stop mouse reporting
info->window->Flags&=~(WFLG_RMBTRAP|WFLG_REPORTMOUSE);
// Turn ticks off
ModifyIDCMP(info->window,info->window->IDCMPFlags&~IDCMP_INTUITICKS);
// Unlock backdrop list
unlock_listlock(&info->objects);
}
return ret;
}