fltk/src/fl_dnd_mac.cxx
Bill Spitzak 5f55e1cd63 Back-ported cut & paste code from fltk2.0.
This code splits the cut & paste into two buffers. The "SELECTION" is
used for the currently highlighted text and for middle-mouse paste and
(if possible) for handling drag & drop. The "CLIPBOARD" is for Ctrl+C
and Ctrl+V style cut & paste.

This matches how Motif, GTK, and KDE 3.0 work. But many older X
applications (including KDE 2) can only see SELECTION, this results in
cut & paste incompatability that is familiar to X users. However this
now moves fltk over to the majority camp.  On all systems this
eliminates the annoying inability to select a region and replace it
with Ctrl+V.

On Mac and Win32 the SELECTION is local to the application, so
middle-mouse paste only works between fields in the application. There
may be tricks (special clipboard data types? use drag & drop?) to make
it communicate, but unless there are standards it would be fltk-only.

The file Fl_cutpaste.cxx has been deleted, so update the IDE files!
The Win32 and Mac versions have NOT BEEN TESTED! I tried to be careful
editing them but they may need some work.


git-svn-id: file:///fltk/svn/fltk/branches/branch-1.1@1989 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
2002-03-07 19:22:58 +00:00

86 lines
2.4 KiB
C++

//
//
//
// Drag & Drop code for the Fast Light Tool Kit (FLTK).
//
// Copyright 1998-2002 by Bill Spitzak and others.
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Library General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Library General Public License for more details.
//
// You should have received a copy of the GNU Library General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
// USA.
//
// Please report all bugs and problems to "fltk-bugs@fltk.org
// This file contains win32-specific code for fltk which is always linked
// in. Search other files for "WIN32" or filenames ending in _win32.cxx
// for other system-specific code.
#include <config.h>
#include <FL/Fl.H>
#include <FL/mac.H>
#include <FL/Fl_Window.H>
extern EventRef fl_os_event;
extern char *fl_selection_buffer;
extern int fl_selection_length;
/**
* drag and drop whatever is in the cut-copy-paste buffer
* - create a selection first using:
* Fl::copy(const char *stuff, int len, 0)
*/
int Fl::dnd()
{
OSErr result;
DragReference dragRef;
result = NewDrag( &dragRef );
if ( result != noErr ) return false;
result = AddDragItemFlavor( dragRef, 1, 'TEXT', fl_selection_buffer, fl_selection_length, 0 );
if ( result != noErr ) { DisposeDrag( dragRef ); return false; }
Point mp;
GetMouse(&mp);
LocalToGlobal( &mp );
RgnHandle region = NewRgn();
SetRectRgn( region, mp.h-10, mp.v-10, mp.h+10, mp.v+10 );
RgnHandle r2 = NewRgn();
SetRectRgn( r2, mp.h-8, mp.v-8, mp.h+8, mp.v+8 );
DiffRgn( region, r2, region );
DisposeRgn( r2 );
EventRecord event;
ConvertEventRefToEventRecord( fl_os_event, &event );
result = TrackDrag( dragRef, &event, region );
Fl_Widget *w = Fl::pushed();
if ( w )
{
w->handle( FL_RELEASE );
Fl::pushed( 0 );
}
if ( result != noErr ) { DisposeRgn( region ); DisposeDrag( dragRef ); return false; }
DisposeRgn( region );
DisposeDrag( dragRef );
return true;
}
//
//
//