#error This sample requires drag and drop support in the library
#endif
+// under Windows we also support data transfer of metafiles as an extra bonus,
+// but they're not available under other platforms
+#ifdef __WINDOWS__
+ #define USE_METAFILES
+#endif // Windows
+
#include "wx/intl.h"
#include "wx/log.h"
#include "wx/colordlg.h"
#include "wx/resource.h"
+#ifdef USE_METAFILES
+ #include "wx/metafile.h"
+#endif // Windows
+
#if defined(__WXGTK__) || defined(__WXMOTIF__)
#include "mondrian.xpm"
+
+ #include "dnd_copy.xpm"
+ #include "dnd_move.xpm"
+ #include "dnd_none.xpm"
#endif
// ----------------------------------------------------------------------------
wxListBox *m_pOwner;
};
+// ----------------------------------------------------------------------------
+// Define a custom dtop target accepting URLs
+// ----------------------------------------------------------------------------
+
+class WXDLLEXPORT URLDropTarget : public wxDropTarget
+{
+public:
+ URLDropTarget() { SetDataObject(new wxURLDataObject); }
+
+ void OnDropURL(wxCoord x, wxCoord y, const wxString& text)
+ {
+ // of course, a real program would do something more useful here...
+ wxMessageBox(text, _T("wxDnD sample: got URL"),
+ wxICON_INFORMATION | wxOK);
+ }
+
+ // URLs can't be moved, only copied
+ virtual wxDragResult OnDragOver(wxCoord WXUNUSED(x), wxCoord WXUNUSED(y),
+ wxDragResult def)
+ { return def == wxDragMove ? wxDragCopy : def; }
+
+ // translate this to calls to OnDropURL() just for convenience
+ virtual wxDragResult OnData(wxCoord x, wxCoord y, wxDragResult def)
+ {
+ if ( !GetData() )
+ return wxDragNone;
+
+ OnDropURL(x, y, ((wxURLDataObject *)m_dataObject)->GetURL());
+
+ return def;
+ }
+};
+
// ----------------------------------------------------------------------------
// Define a new application type
// ----------------------------------------------------------------------------
IMPLEMENT_APP(DnDApp);
+// ----------------------------------------------------------------------------
+// Define canvas class to show a bitmap
+// ----------------------------------------------------------------------------
+
+class DnDCanvasBitmap : public wxScrolledWindow
+{
+public:
+ DnDCanvasBitmap(wxWindow *parent) : wxScrolledWindow(parent) { }
+
+ void SetBitmap(const wxBitmap& bitmap)
+ {
+ m_bitmap = bitmap;
+
+ SetScrollbars(10, 10,
+ m_bitmap.GetWidth() / 10, m_bitmap.GetHeight() / 10);
+
+ Refresh();
+ }
+
+ void OnPaint(wxPaintEvent& event)
+ {
+ wxPaintDC dc(this);
+
+ if ( m_bitmap.Ok() )
+ {
+ PrepareDC(dc);
+
+ dc.DrawBitmap(m_bitmap, 0, 0);
+ }
+ }
+
+private:
+ wxBitmap m_bitmap;
+
+ DECLARE_EVENT_TABLE()
+};
+
+#ifdef USE_METAFILES
+
+// and the same thing fo metafiles
+class DnDCanvasMetafile : public wxScrolledWindow
+{
+public:
+ DnDCanvasMetafile(wxWindow *parent) : wxScrolledWindow(parent) { }
+
+ void SetMetafile(const wxMetafile& metafile)
+ {
+ m_metafile = metafile;
+
+ SetScrollbars(10, 10,
+ m_metafile.GetWidth() / 10, m_metafile.GetHeight() / 10);
+
+ Refresh();
+ }
+
+ void OnPaint(wxPaintEvent& event)
+ {
+ wxPaintDC dc(this);
+
+ if ( m_metafile.Ok() )
+ {
+ PrepareDC(dc);
+
+ m_metafile.Play(&dc);
+ }
+ }
+
+private:
+ wxMetafile m_metafile;
+
+ DECLARE_EVENT_TABLE()
+};
+
+#endif // USE_METAFILES
+
// ----------------------------------------------------------------------------
// Define a new frame type for the main frame
// ----------------------------------------------------------------------------
void OnCopyBitmap(wxCommandEvent& event);
void OnPasteBitmap(wxCommandEvent& event);
+#ifdef USE_METAFILES
+ void OnPasteMetafile(wxCommandEvent& event);
+#endif // USE_METAFILES
+
void OnCopyFiles(wxCommandEvent& event);
void OnLeftDown(wxMouseEvent& event);
*m_pLogPrev;
wxString m_strText;
- wxBitmap m_bitmap;
};
// ----------------------------------------------------------------------------
// we don't draw the shape to a bitmap until it's really needed (i.e.
// we're asked to do so)
m_hasBitmap = FALSE;
+#ifdef USE_METAFILES
+ m_hasMetaFile = FALSE;
+#endif // Windows
}
virtual ~DnDShapeDataObject() { delete m_shape; }
m_shape = (DnDShape *)NULL;
m_hasBitmap = FALSE;
+#ifdef USE_METAFILES
+ m_hasMetaFile = FALSE;
+#endif // Windows
return shape;
}
if ( dir == Get )
{
// but the bitmap format(s) are only supported for output
- nFormats += m_dataobj.GetFormatCount(dir);
+ nFormats += m_dobjBitmap.GetFormatCount(dir);
+
+#ifdef USE_METAFILES
+ nFormats += m_dobjMetaFile.GetFormatCount(dir);
+#endif // Windows
}
return nFormats;
formats[0] = m_formatShape;
if ( dir == Get )
{
- m_dataobj.GetAllFormats(&formats[1], dir);
+ // in Get direction we additionally support bitmaps and metafiles
+ // under Windows
+ m_dobjBitmap.GetAllFormats(&formats[1], dir);
+
+#ifdef USE_METAFILES
+ // don't assume that m_dobjBitmap has only 1 format
+ m_dobjMetaFile.GetAllFormats(&formats[1 +
+ m_dobjBitmap.GetFormatCount(dir)], dir);
+#endif // Windows
}
}
{
return m_shape->GetDataSize();
}
+#ifdef USE_METAFILES
+ else if ( m_dobjMetaFile.IsSupported(format) )
+ {
+ if ( !m_hasMetaFile )
+ CreateMetaFile();
+
+ return m_dobjMetaFile.GetDataSize(format);
+ }
+#endif // Windows
else
{
+ wxASSERT_MSG( m_dobjBitmap.IsSupported(format),
+ "unexpected format" );
+
if ( !m_hasBitmap )
CreateBitmap();
- return m_dataobj.GetDataSize();
+ return m_dobjBitmap.GetDataSize();
}
}
return TRUE;
}
+#ifdef USE_METAFILES
+ else if ( m_dobjMetaFile.IsSupported(format) )
+ {
+ if ( !m_hasMetaFile )
+ CreateMetaFile();
+
+ return m_dobjMetaFile.GetDataHere(format, pBuf);
+ }
+#endif // Windows
else
{
+ wxASSERT_MSG( m_dobjBitmap.IsSupported(format),
+ "unexpected format" );
+
if ( !m_hasBitmap )
CreateBitmap();
- return m_dataobj.GetDataHere(pBuf);
+ return m_dobjBitmap.GetDataHere(pBuf);
}
}
// the shape has changed
m_hasBitmap = FALSE;
+#ifdef USE_METAFILES
+ m_hasMetaFile = FALSE;
+#endif // Windows
+
return TRUE;
}
private:
- // creates a bitmap and assigns it to m_dataobj (also sets m_hasBitmap)
+ // creates a bitmap and assigns it to m_dobjBitmap (also sets m_hasBitmap)
void CreateBitmap() const;
+#ifdef USE_METAFILES
+ void CreateMetaFile() const;
+#endif // Windows
wxDataFormat m_formatShape; // our custom format
- wxBitmapDataObject m_dataobj; // it handles bitmaps
- bool m_hasBitmap; // true if m_dataobj has valid bitmap
+ wxBitmapDataObject m_dobjBitmap; // it handles bitmaps
+ bool m_hasBitmap; // true if m_dobjBitmap has valid bitmap
+
+#ifdef USE_METAFILES
+ wxMetaFileDataObject m_dobjMetaFile;// handles metafiles
+ bool m_hasMetaFile; // true if we have valid metafile
+#endif // Windows
DnDShape *m_shape; // our data
};
}
// override base class (pure) virtuals
- virtual void OnEnter()
- { m_frame->SetStatusText("Mouse entered the frame"); }
+ virtual wxDragResult OnEnter(wxCoord x, wxCoord y, wxDragResult def)
+ { m_frame->SetStatusText("Mouse entered the frame"); return OnDragOver(x, y, def); }
virtual void OnLeave()
{ m_frame->SetStatusText("Mouse left the frame"); }
virtual wxDragResult OnData(wxCoord x, wxCoord y, wxDragResult def)
DnDShapeFrame *m_frame;
};
+// ----------------------------------------------------------------------------
+// functions prototypes
+// ----------------------------------------------------------------------------
+
+static void ShowBitmap(const wxBitmap& bitmap);
+
+#ifdef USE_METAFILES
+static void ShowMetaFile(const wxMetaFile& metafile);
+#endif // USE_METAFILES
+
// ----------------------------------------------------------------------------
// IDs for the menu commands
// ----------------------------------------------------------------------------
Menu_Paste,
Menu_CopyBitmap,
Menu_PasteBitmap,
+ Menu_PasteMFile,
Menu_CopyFiles,
Menu_Shape_New = 500,
Menu_Shape_Edit,
EVT_MENU(Menu_Paste, DnDFrame::OnPaste)
EVT_MENU(Menu_CopyBitmap, DnDFrame::OnCopyBitmap)
EVT_MENU(Menu_PasteBitmap,DnDFrame::OnPasteBitmap)
+#ifdef USE_METAFILES
+ EVT_MENU(Menu_PasteMFile, DnDFrame::OnPasteMetafile)
+#endif // USE_METAFILES
EVT_MENU(Menu_CopyFiles, DnDFrame::OnCopyFiles)
EVT_UPDATE_UI(Menu_Paste, DnDFrame::OnUpdateUIPasteText)
EVT_BUTTON(Button_Colour, DnDShapeDialog::OnColour)
END_EVENT_TABLE()
+BEGIN_EVENT_TABLE(DnDCanvasBitmap, wxScrolledWindow)
+ EVT_PAINT(DnDCanvasBitmap::OnPaint)
+END_EVENT_TABLE()
+
+#ifdef USE_METAFILES
+BEGIN_EVENT_TABLE(DnDCanvasMetafile, wxScrolledWindow)
+ EVT_PAINT(DnDCanvasMetafile::OnPaint)
+END_EVENT_TABLE()
+#endif // USE_METAFILES
+
// ============================================================================
// implementation
// ============================================================================
wxDefaultResourceTable->ParseResourceFile(path);
+ // switch on trace messages
+#if defined(__WXGTK__)
+ wxLog::AddTraceMask(_T("clipboard"));
+#elif defined(__WXMSW__)
+ wxLog::AddTraceMask(wxTRACE_OleCalls);
+#endif
+
#if wxUSE_LIBPNG
wxImage::AddHandler( new wxPNGHandler );
#endif
+ // under X we usually want to use the primary selection by default (which
+ // is shared with other apps)
+ wxTheClipboard->UsePrimarySelection();
+
// create the main frame window
DnDFrame *frame = new DnDFrame((wxFrame *) NULL,
"Drag-and-Drop/Clipboard wxWindows Sample",
- 50, 50, 450, 340);
+ 10, 100, 650, 340);
// activate it
frame->Show(TRUE);
file_menu->Append(Menu_Quit, "E&xit");
wxMenu *log_menu = new wxMenu;
- log_menu->Append(Menu_Clear, "Clear\tDel");
+ log_menu->Append(Menu_Clear, "Clear\tCtrl-L");
wxMenu *help_menu = new wxMenu;
help_menu->Append(Menu_Help, "&Help...");
clip_menu->Append(Menu_Copy, "&Copy text\tCtrl+C");
clip_menu->Append(Menu_Paste, "&Paste text\tCtrl+V");
clip_menu->AppendSeparator();
- clip_menu->Append(Menu_CopyBitmap, "&Copy bitmap\tAlt+C");
- clip_menu->Append(Menu_PasteBitmap, "&Paste bitmap\tAlt+V");
+ clip_menu->Append(Menu_CopyBitmap, "Copy &bitmap\tAlt+C");
+ clip_menu->Append(Menu_PasteBitmap, "Paste b&itmap\tAlt+V");
+#ifdef USE_METAFILES
+ clip_menu->AppendSeparator();
+ clip_menu->Append(Menu_PasteMFile, "Paste &metafile\tCtrl-M");
+#endif // USE_METAFILES
clip_menu->AppendSeparator();
- clip_menu->Append(Menu_CopyFiles, "&Copy files\tCtrl+F");
+ clip_menu->Append(Menu_CopyFiles, "Copy &files\tCtrl+F");
wxMenuBar *menu_bar = new wxMenuBar;
menu_bar->Append(file_menu, "&File");
wxTE_MULTILINE | wxTE_READONLY |
wxSUNKEN_BORDER );
-#ifdef __WXMSW__
- // redirect log messages to the text window and switch on OLE messages
- // logging
- wxLog::AddTraceMask(wxTRACE_OleCalls);
-#endif
+ // redirect log messages to the text window
m_pLog = new wxLogTextCtrl(m_ctrlLog);
m_pLogPrev = wxLog::SetActiveTarget(m_pLog);
- // associate drop targets with 2 text controls
+ // associate drop targets with the controls
m_ctrlFile->SetDropTarget(new DnDFile(m_ctrlFile));
m_ctrlText->SetDropTarget(new DnDText(m_ctrlText));
+ m_ctrlLog->SetDropTarget(new URLDropTarget);
wxLayoutConstraints *c;
wxPaintDC dc(this);
dc.SetFont( wxFont( 24, wxDECORATIVE, wxNORMAL, wxNORMAL, FALSE, "charter" ) );
- dc.DrawText( "Drag text from here!", 20, h-50 );
-
- if ( m_bitmap.Ok() )
- {
- // 4/5 is 80% taken by other windows, 20 is arbitrary margin
- dc.DrawBitmap(m_bitmap,
- w - m_bitmap.GetWidth() - 20,
- (4*h)/5 + 20);
- }
+ dc.DrawText( "Drag text from here!", 100, h-50 );
}
void DnDFrame::OnUpdateUIPasteText(wxUpdateUIEvent& event)
{
+#ifdef __WXDEBUG__
+ // too many trace messages if we don't do it - this function is called
+ // very often
+ wxLogNull nolog;
+#endif
+
event.Enable( wxTheClipboard->IsSupported(wxDF_TEXT) );
}
void DnDFrame::OnUpdateUIPasteBitmap(wxUpdateUIEvent& event)
{
+#ifdef __WXDEBUG__
+ // too many trace messages if we don't do it - this function is called
+ // very often
+ wxLogNull nolog;
+#endif
+
event.Enable( wxTheClipboard->IsSupported(wxDF_BITMAP) );
}
void DnDFrame::OnLogClear(wxCommandEvent& /* event */ )
{
m_ctrlLog->Clear();
+ m_ctrlText->Clear();
+ m_ctrlFile->Clear();
}
void DnDFrame::OnLeftDown(wxMouseEvent &WXUNUSED(event) )
{
// start drag operation
wxTextDataObject textData(m_strText);
- wxDropSource source(textData, this
-#ifdef __WXMSW__
- ,wxCURSOR_PENCIL, // for copy
- wxCURSOR_SPRAYCAN, // for move
- wxCURSOR_QUESTION_ARROW // for nothing
-#endif
- );
+/*
+ wxFileDataObject textData;
+ textData.AddFile( "/file1.txt" );
+ textData.AddFile( "/file2.txt" );
+*/
+ wxDropSource source(textData, this,
+ wxDROP_ICON(dnd_copy),
+ wxDROP_ICON(dnd_move),
+ wxDROP_ICON(dnd_none));
const char *pc;
}
else
{
- wxLogMessage(_T("Bitmap pasted from the clipboard") );
- m_bitmap = data.GetBitmap();
- Refresh();
+ const wxBitmap& bmp = data.GetBitmap();
+
+ wxLogMessage(_T("Bitmap %dx%d pasted from the clipboard"),
+ bmp.GetWidth(), bmp.GetHeight());
+ ShowBitmap(bmp);
}
wxTheClipboard->Close();
}
+#ifdef USE_METAFILES
+
+void DnDFrame::OnPasteMetafile(wxCommandEvent& WXUNUSED(event))
+{
+ if ( !wxTheClipboard->Open() )
+ {
+ wxLogError(_T("Can't open clipboard."));
+
+ return;
+ }
+
+ if ( !wxTheClipboard->IsSupported(wxDF_METAFILE) )
+ {
+ wxLogWarning(_T("No metafile on clipboard"));
+ }
+ else
+ {
+ wxMetaFileDataObject data;
+ if ( !wxTheClipboard->GetData(data) )
+ {
+ wxLogError(_T("Can't paste metafile from the clipboard"));
+ }
+ else
+ {
+ const wxMetaFile& mf = data.GetMetafile();
+
+ wxLogMessage(_T("Metafile %dx%d pasted from the clipboard"),
+ mf.GetWidth(), mf.GetHeight());
+
+ ShowMetaFile(mf);
+ }
+ }
+
+ wxTheClipboard->Close();
+}
+
+#endif // USE_METAFILES
+
// ----------------------------------------------------------------------------
// file clipboard
// ----------------------------------------------------------------------------
void DnDFrame::OnCopyFiles(wxCommandEvent& WXUNUSED(event))
{
#ifdef __WXMSW__
- wxFileDataObject *dobj = new wxFileDataObject;
-
wxFileDialog dialog(this, "Select a file to copy", "", "",
"All files (*.*)|*.*", 0);
- if ( dialog.ShowModal() == wxID_OK )
+ wxArrayString filenames;
+ while ( dialog.ShowModal() == wxID_OK )
+ {
+ filenames.Add(dialog.GetPath());
+ }
+
+ if ( !filenames.IsEmpty() )
{
- wxString filename = dialog.GetPath();
- dobj->AddFile(filename);
+ wxFileDataObject *dobj = new wxFileDataObject;
+ size_t count = filenames.GetCount();
+ for ( size_t n = 0; n < count; n++ )
+ {
+ dobj->AddFile(filenames[n]);
+ }
wxClipboardLocker locker;
if ( !locker )
{
if ( !wxTheClipboard->AddData(dobj) )
{
- wxLogError("Can't copy file to the clipboard");
+ wxLogError("Can't copy file(s) to the clipboard");
}
else
{
- wxLogStatus(this, "File '%s' copied to the clipboard",
- filename.c_str());
+ wxLogStatus(this, "%d file%s copied to the clipboard",
+ count, count == 1 ? "" : "s");
}
}
}
menuShape->Append(Menu_Shape_New, "&New default shape\tCtrl-S");
menuShape->Append(Menu_Shape_Edit, "&Edit shape\tCtrl-E");
menuShape->AppendSeparator();
- menuShape->Append(Menu_Shape_Clear, "&Clear shape\tDel");
+ menuShape->Append(Menu_Shape_Clear, "&Clear shape\tCtrl-L");
wxMenu *menuClipboard = new wxMenu;
menuClipboard->Append(Menu_ShapeClipboard_Copy, "&Copy\tCtrl-C");
SetDropTarget(new DnDShapeDropTarget(this));
m_shape = NULL;
-
+
SetBackgroundColour(*wxWHITE);
}
DnDShapeFrame::~DnDShapeFrame()
{
- if (m_shape)
+ if (m_shape)
delete m_shape;
}
void DnDShapeFrame::SetShape(DnDShape *shape)
{
- if (m_shape)
+ if (m_shape)
delete m_shape;
m_shape = shape;
Refresh();
// DnDShapeDataObject
// ----------------------------------------------------------------------------
+#ifdef USE_METAFILES
+
+void DnDShapeDataObject::CreateMetaFile() const
+{
+ wxPoint pos = m_shape->GetPosition();
+ wxSize size = m_shape->GetSize();
+
+ wxMetaFileDC dcMF(wxEmptyString, pos.x + size.x, pos.y + size.y);
+
+ m_shape->Draw(dcMF);
+
+ wxMetafile *mf = dcMF.Close();
+
+ DnDShapeDataObject *self = (DnDShapeDataObject *)this; // const_cast
+ self->m_dobjMetaFile.SetMetafile(*mf);
+ self->m_hasMetaFile = TRUE;
+
+ delete mf;
+}
+
+#endif // Windows
+
void DnDShapeDataObject::CreateBitmap() const
{
wxPoint pos = m_shape->GetPosition();
dc.SelectObject(wxNullBitmap);
DnDShapeDataObject *self = (DnDShapeDataObject *)this; // const_cast
- self->m_dataobj.SetBitmap(bitmap);
+ self->m_dobjBitmap.SetBitmap(bitmap);
self->m_hasBitmap = TRUE;
}
+// ----------------------------------------------------------------------------
+// global functions
+// ----------------------------------------------------------------------------
+
+static void ShowBitmap(const wxBitmap& bitmap)
+{
+ wxFrame *frame = new wxFrame(NULL, -1, _T("Bitmap view"));
+ frame->CreateStatusBar();
+ DnDCanvasBitmap *canvas = new DnDCanvasBitmap(frame);
+ canvas->SetBitmap(bitmap);
+
+ int w = bitmap.GetWidth(),
+ h = bitmap.GetHeight();
+ frame->SetStatusText(wxString::Format(_T("%dx%d"), w, h));
+
+ frame->SetClientSize(w > 100 ? 100 : w, h > 100 ? 100 : h);
+ frame->Show(TRUE);
+}
+
+#ifdef USE_METAFILES
+
+static void ShowMetaFile(const wxMetaFile& metafile)
+{
+ wxFrame *frame = new wxFrame(NULL, -1, _T("Metafile view"));
+ frame->CreateStatusBar();
+ DnDCanvasMetafile *canvas = new DnDCanvasMetafile(frame);
+ canvas->SetMetafile(metafile);
+
+ wxSize size = metafile.GetSize();
+ frame->SetStatusText(wxString::Format(_T("%dx%d"), size.x, size.y));
+
+ frame->SetClientSize(size.x > 100 ? 100 : size.x,
+ size.y > 100 ? 100 : size.y);
+ frame->Show();
+}
+
+#endif // USE_METAFILES
projects / wxWidgets.git / blobdiff