OZ++ Sample: DropReceiver |
/******************************************************************************
*
* Copyright (c) 2014 Antillia.com TOSHIYUKI ARAI. ALL RIGHTS RESERVED.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions, and the following disclaimer.
*
* 2. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*
* DropReceiver.cpp
*
*****************************************************************************/
#include <oz++/motif/ApplicationView.h>
#include <oz++/motif/Label.h>
#include <oz++/motif/DropSite.h>
#include <oz++/motif/DropTransfer.h>
namespace OZ {
class MainView :public ApplicationView {
private:
Atom COMPOUND_TEXT;
SmartPtr<Label> label;
SmartPtr<DropSite> dropSite;
SmartPtr<DropTransfer> dropTransfer;
void drop(Action& action)
{
XmDropProcCallback dropData =
(XmDropProcCallback)action.getCallData();
if(dropData -> dropAction == XmDROP &&
dropData -> operation == XmDROP_COPY) {
printf("DROP and DROP_COPY\n");
dropTransfer->start(dropData->dragContext);
} else {
printf("drop cancel\n");
dropTransfer->cancel(dropData->dragContext);
}
}
void move(Transfer& transfer)
{
printf("move\n");
Atom* type = transfer.getType();
if(*type == COMPOUND_TEXT) {
printf("type: COMPOUND_TEXT\n");
String value = (String)transfer.getValue();
XmString xms = XmCvtCTToXmString(value);
label -> set(XmNlabelString, (XtArgVal)xms);
}
}
public:
MainView(Application& applet, const char* name, Args& args)
:ApplicationView(applet, name, args)
{
Args ar;
CompoundString cs("Drop Receiver");
ar.set(XmNlabelString, cs);
label = new Label(this, "receiver", ar);
COMPOUND_TEXT = XmInternAtom(getDisplay(), (char*)"COMPOUND_TEXT", False);
Atom targets[1];
targets[0] = COMPOUND_TEXT;
ar.reset();
ar.set(XmNimportTargets, (XtArgVal)targets);
ar.set(XmNnumImportTargets, 1);
ar.set(XmNdropSiteOperations, XmDROP_COPY);
dropSite = new DropSite(label, &ar);
dropSite -> registerDropProc(this, (Callback)&MainView::drop, NULL);
XmDropTransferEntryRec entry[1];
entry[0].target = COMPOUND_TEXT;
ar.reset();
ar.set(XmNdropTransfers, (XtArgVal)entry);
ar.set(XmNnumDropTransfers, 1);
dropTransfer = new DropTransfer(label, &ar);
dropTransfer -> registerTransferProc(this, (Callback)&MainView::move, NULL);
}
~MainView()
{
}
};
}
//
int main(int argc, char** argv)
{
try {
const char* appclass = argv[0];
Application applet(appclass, argc, argv);
Args args;
args.set(XmNgeometry, "300x100");
MainView view(applet, argv[0], args);
view.realize();
applet.run();
} catch (Exception& ex) {
caught(ex);
}
return 0;
}