void
LanguageListView::MessageReceived(BMessage* message)
{
if (message->WasDropped() && _AcceptsDragMessage(message)) {
// Someone just dropped something on us
BMessage dragMessage(*message);
dragMessage.AddInt32("drop_index", fDropIndex);
dragMessage.AddPointer("drop_target", this);
Messenger().SendMessage(&dragMessage);
} else
BOutlineListView::MessageReceived(message);
}
void CCrossHairDragView::MouseDown(BPoint where)
{
// Send a message as drag message, which isn't understood
// by the target. The target will respond with a
// B_NOT_UNDERSTOOD message. The reply is ignored.
BMessage dragMessage('!+#@');
float width = crossHair->Bounds().Width();
float height = crossHair->Bounds().Height();
SetMouseEventMask(B_POINTER_EVENTS, B_NO_POINTER_HISTORY);
isDragged = true;
// The drag bitmap is deleted by the system. Create a copy
// of the crosshair bitmap.
BBitmap *clone = CreateCloneBitmap(crossHair);
DragMessage(&dragMessage, clone, B_OP_OVER, BPoint(width/2,height/2), this);
}
bool
FactoryDragListView::InitiateDrag(BPoint point, int32 index, bool wasSelected)
{
BALM::CustomizableAddOn* addOn = fInstalledComponents.ItemAt(index);
BMessage dragMessage(kMsgCreateComponent);
dragMessage.AddString("component", addOn->Name());
BRect frame;
BBitmap* bitmap = BALM::EditorHelper::CreateBitmap(addOn, frame, NULL);
if (bitmap != NULL) {
DragMessage(&dragMessage, bitmap, BPoint(frame.Width() / 2,
frame.Height() / 2));
} else {
frame.OffsetTo(fCurrentMousePosition.x - frame.Width() / 2,
fCurrentMousePosition.y - frame.Height() / 2);
DragMessage(&dragMessage, frame);
}
return true;
}
bool
PartitionListView::InitiateDrag(BPoint rowPoint, bool wasSelected)
{
PartitionListRow* draggedRow
= dynamic_cast<PartitionListRow*>(RowAt(rowPoint));
if (draggedRow == NULL)
return false;
const char* draggedPath = draggedRow->DevicePath();
if (draggedPath == NULL)
return false;
BRect draggedRowRect;
GetRowRect(draggedRow, &draggedRowRect);
BMessage dragMessage(B_MIME_DATA);
dragMessage.AddData("text/plain", B_MIME_TYPE, draggedPath,
strlen(draggedPath));
DragMessage(&dragMessage, draggedRowRect, NULL);
return true;
}
// MouseMoved
void
ObjectView::MouseMoved(BPoint where, uint32 transit,
const BMessage* dragMessage)
{
// BRect dirty(where, where);
// dirty.InsetBy(-10, -10);
// Invalidate(dirty);
if (dragMessage) {
//printf("ObjectView::MouseMoved(BPoint(%.1f, %.1f)) - DRAG MESSAGE\n", where.x, where.y);
//Window()->CurrentMessage()->PrintToStream();
} else {
//printf("ObjectView::MouseMoved(BPoint(%.1f, %.1f))\n", where.x, where.y);
}
if (fScrolling) {
BCursor cursor(kGrabCursor);
SetViewCursor(&cursor);
BPoint offset = fLastMousePos - where;
ScrollBy(offset.x, offset.y);
fLastMousePos = where + offset;
} else if (fInitiatingDrag) {
BPoint offset = fLastMousePos - where;
if (sqrtf(offset.x * offset.x + offset.y * offset.y) > 5.0) {
BMessage dragMessage('drag');
BBitmap* dragBitmap = new BBitmap(BRect(0, 0, 40, 40), B_RGBA32, true);
if (dragBitmap->Lock()) {
BView* helper = new BView(dragBitmap->Bounds(), "offscreen view",
B_FOLLOW_ALL, B_WILL_DRAW);
dragBitmap->AddChild(helper);
helper->SetDrawingMode(B_OP_ALPHA);
helper->SetBlendingMode(B_CONSTANT_ALPHA, B_ALPHA_COMPOSITE);
BRect r(helper->Bounds());
helper->SetHighColor(0, 0, 0, 128);
helper->StrokeRect(r);
helper->SetHighColor(200, 200, 200, 100);
r.InsetBy(1, 1);
helper->FillRect(r);
helper->SetHighColor(0, 0, 0, 255);
const char* text = "Test";
float pos = (r.Width() - helper->StringWidth(text)) / 2;
helper->DrawString(text, BPoint(pos, 25));
helper->Sync();
}
DragMessage(&dragMessage, dragBitmap, B_OP_ALPHA, B_ORIGIN, this);
fInitiatingDrag = false;
}
} else {
BCursor cursor(kMoveCursor);
SetViewCursor(&cursor);
if (fState && fState->IsTracking()) {
BRect before = fState->Bounds();
fState->MouseMoved(where);
BRect after = fState->Bounds();
BRect invalid(before | after);
Invalidate(invalid);
}
}
// SetViewCursor();
}