void
PictureView::_BeginDrag(BPoint sourcePoint)
{
BBitmap* bitmap = _CopyPicture(128);
if (bitmap == NULL)
return;
// fill the drag message
BMessage drag(B_SIMPLE_DATA);
drag.AddInt32("be:actions", B_COPY_TARGET);
drag.AddInt32("be:actions", B_TRASH_TARGET);
// name the clip after person name, if any
BString name = B_TRANSLATE("%name% picture");
name.ReplaceFirst("%name%", Window() ? Window()->Title() :
B_TRANSLATE("Unnamed person"));
drag.AddString("be:clip_name", name.String());
BTranslatorRoster* roster = BTranslatorRoster::Default();
if (roster == NULL) {
delete bitmap;
return;
}
int32 infoCount;
translator_info* info;
BBitmapStream stream(bitmap);
if (roster->GetTranslators(&stream, NULL, &info, &infoCount) == B_OK) {
for (int32 i = 0; i < infoCount; i++) {
const translation_format* formats;
int32 count;
roster->GetOutputFormats(info[i].translator, &formats, &count);
for (int32 j = 0; j < count; j++) {
if (strcmp(formats[j].MIME, "image/x-be-bitmap") != 0) {
// needed to send data in message
drag.AddString("be:types", formats[j].MIME);
// needed to pass data via file
drag.AddString("be:filetypes", formats[j].MIME);
drag.AddString("be:type_descriptions", formats[j].name);
}
}
}
}
stream.DetachBitmap(&bitmap);
// we also support "Passing Data via File" protocol
drag.AddString("be:types", B_FILE_MIME_TYPE);
sourcePoint -= fPictureRect.LeftTop();
SetMouseEventMask(B_POINTER_EVENTS);
DragMessage(&drag, bitmap, B_OP_ALPHA, sourcePoint);
bitmap = NULL;
}
void
PictureView::_HandleDrop(BMessage* msg)
{
entry_ref dirRef;
BString name, type;
bool saveToFile = msg->FindString("be:filetypes", &type) == B_OK
&& msg->FindRef("directory", &dirRef) == B_OK
&& msg->FindString("name", &name) == B_OK;
bool sendInMessage = !saveToFile
&& msg->FindString("be:types", &type) == B_OK;
if (!sendInMessage && !saveToFile)
return;
BBitmap* bitmap = fPicture;
if (bitmap == NULL)
return;
BTranslatorRoster* roster = BTranslatorRoster::Default();
if (roster == NULL)
return;
BBitmapStream stream(bitmap);
// find translation format we're asked for
translator_info* outInfo;
int32 outNumInfo;
bool found = false;
translation_format format;
if (roster->GetTranslators(&stream, NULL, &outInfo, &outNumInfo) == B_OK) {
for (int32 i = 0; i < outNumInfo; i++) {
const translation_format* formats;
int32 formatCount;
roster->GetOutputFormats(outInfo[i].translator, &formats,
&formatCount);
for (int32 j = 0; j < formatCount; j++) {
if (strcmp(formats[j].MIME, type.String()) == 0) {
format = formats[j];
found = true;
break;
}
}
}
}
if (!found) {
stream.DetachBitmap(&bitmap);
return;
}
if (sendInMessage) {
BMessage reply(B_MIME_DATA);
BMallocIO memStream;
if (roster->Translate(&stream, NULL, NULL, &memStream,
format.type) == B_OK) {
reply.AddData(format.MIME, B_MIME_TYPE, memStream.Buffer(),
memStream.BufferLength());
msg->SendReply(&reply);
}
} else {
BDirectory dir(&dirRef);
BFile file(&dir, name.String(), B_WRITE_ONLY | B_CREATE_FILE
| B_ERASE_FILE);
if (file.InitCheck() == B_OK
&& roster->Translate(&stream, NULL, NULL, &file,
format.type) == B_OK) {
BNodeInfo nodeInfo(&file);
if (nodeInfo.InitCheck() == B_OK)
nodeInfo.SetType(type.String());
} else {
BString text = B_TRANSLATE("The file '%name%' could not "
"be written.");
text.ReplaceFirst("%name%", name);
BAlert* alert = new BAlert(B_TRANSLATE("Error"), text.String(),
B_TRANSLATE("OK"), NULL, NULL, B_WIDTH_AS_USUAL, B_STOP_ALERT);
alert->SetFlags(alert->Flags() | B_CLOSE_ON_ESCAPE);
alert->Go();
}
}
// Detach, as we don't want our fPicture to be deleted
stream.DetachBitmap(&bitmap);
}