#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
// ----------------------------------------------------------------------------
// file names) we drop on them
// ----------------------------------------------------------------------------
-typedef long wxDropPointCoord;
-
class DnDText : public wxTextDropTarget
{
public:
DnDText(wxListBox *pOwner) { m_pOwner = pOwner; }
- virtual bool OnDropText(wxDropPointCoord x, wxDropPointCoord y,
- const wxChar* psz);
+ virtual bool OnDropText(wxCoord x, wxCoord y, const wxString& text);
private:
wxListBox *m_pOwner;
public:
DnDFile(wxListBox *pOwner) { m_pOwner = pOwner; }
- virtual bool OnDropFiles(wxDropPointCoord x, wxDropPointCoord y,
- size_t nFiles, const wxChar* const aszFiles[] );
+ virtual bool OnDropFiles(wxCoord x, wxCoord y,
+ const wxArrayString& filenames);
private:
wxListBox *m_pOwner;
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 OnNewFrame(wxCommandEvent& event);
void OnHelp (wxCommandEvent& event);
void OnLogClear(wxCommandEvent& event);
+
void OnCopy(wxCommandEvent& event);
void OnPaste(wxCommandEvent& event);
+
void OnCopyBitmap(wxCommandEvent& event);
void OnPasteBitmap(wxCommandEvent& event);
- void OnClipboardHasText(wxCommandEvent& event);
- void OnClipboardHasBitmap(wxCommandEvent& event);
+
+#ifdef USE_METAFILES
+ void OnPasteMetafile(wxCommandEvent& event);
+#endif // USE_METAFILES
+
+ void OnCopyFiles(wxCommandEvent& event);
void OnLeftDown(wxMouseEvent& event);
void OnRightDown(wxMouseEvent& event);
+ void OnUpdateUIPasteText(wxUpdateUIEvent& event);
+ void OnUpdateUIPasteBitmap(wxUpdateUIEvent& event);
+
DECLARE_EVENT_TABLE()
private:
wxListBox *m_ctrlFile,
- *m_ctrlText;
+ *m_ctrlText;
wxTextCtrl *m_ctrlLog;
- wxLog *m_pLog, *m_pLogPrev;
+ wxLog *m_pLog,
+ *m_pLogPrev;
wxString m_strText;
- wxBitmap m_bitmap;
};
// ----------------------------------------------------------------------------
{
}
+ // this is for debugging - lets us see when exactly an object is freed
+ // (this may be later than you think if it's on the clipboard, for example)
+ virtual ~DnDShape() { }
+
// the functions used for drag-and-drop: they dump and restore a shape into
- // some bitwise-copiable data
- //
- // NB: here we profit from the fact that wxPoint, wxSize and wxColour are
- // POD (plain old data) and so can be copied directly - but it wouldn't
- // work for other types!
+ // some bitwise-copiable data (might use streams too...)
// ------------------------------------------------------------------------
// restore from buffer
const wxColour& GetColour() const { return m_col; }
const wxSize& GetSize() const { return m_size; }
+ void Move(const wxPoint& pos) { m_pos = pos; }
+
// to implement in derived classes
virtual Kind GetKind() const = 0;
- virtual void Draw(wxDC& dc) = 0
+ virtual void Draw(wxDC& dc)
{
dc.SetPen(wxPen(m_col, 1, wxSOLID));
}
const wxColour& col)
: DnDShape(pos, size, col)
{
+ wxLogMessage("DnDTriangularShape is being created");
+ }
+
+ virtual ~DnDTriangularShape()
+ {
+ wxLogMessage("DnDTriangularShape is being deleted");
}
virtual Kind GetKind() const { return Triangle; }
dc.DrawLine(p2, p3);
dc.DrawLine(p3, p1);
+#ifdef __WXMSW__
dc.FloodFill(GetCentre(), m_col, wxFLOOD_BORDER);
+#endif
}
};
const wxColour& col)
: DnDShape(pos, size, col)
{
+ wxLogMessage("DnDRectangularShape is being created");
+ }
+
+ virtual ~DnDRectangularShape()
+ {
+ wxLogMessage("DnDRectangularShape is being deleted");
}
virtual Kind GetKind() const { return Rectangle; }
dc.DrawLine(p3, p4);
dc.DrawLine(p4, p1);
+#ifdef __WXMSW__
dc.FloodFill(GetCentre(), m_col, wxFLOOD_BORDER);
+#endif
}
};
const wxColour& col)
: DnDShape(pos, size, col)
{
+ wxLogMessage("DnDEllipticShape is being created");
+ }
+
+ virtual ~DnDEllipticShape()
+ {
+ wxLogMessage("DnDEllipticShape is being deleted");
}
virtual Kind GetKind() const { return Ellipse; }
dc.DrawEllipse(m_pos, m_size);
+#ifdef __WXMSW__
dc.FloodFill(GetCentre(), m_col, wxFLOOD_BORDER);
+#endif
}
};
public:
// ctor doesn't copy the pointer, so it shouldn't go away while this object
// is alive
- DnDShapeDataObject(DnDShape *shape)
+ DnDShapeDataObject(DnDShape *shape = (DnDShape *)NULL)
{
- m_shape = shape;
+ if ( shape )
+ {
+ // we need to copy the shape because the one we're handled may be
+ // deleted while it's still on the clipboard (for example) - and we
+ // reuse the serialisation methods here to copy it
+ void *buf = malloc(shape->DnDShape::GetDataSize());
+ shape->GetDataHere(buf);
+ m_shape = DnDShape::New(buf);
+
+ free(buf);
+ }
+ else
+ {
+ // nothing to copy
+ m_shape = NULL;
+ }
// this string should uniquely identify our format, but is otherwise
// arbitrary
// 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; }
+
+ // after a call to this function, the shape is owned by the caller and it
+ // is responsible for deleting it!
+ //
+ // NB: a better solution would be to make DnDShapes ref counted and this
+ // is what should probably be done in a real life program, otherwise
+ // the ownership problems become too complicated really fast
+ DnDShape *GetShape()
+ {
+ DnDShape *shape = m_shape;
+
+ m_shape = (DnDShape *)NULL;
+ m_hasBitmap = FALSE;
+#ifdef USE_METAFILES
+ m_hasMetaFile = FALSE;
+#endif // Windows
+
+ return shape;
}
// implement base class pure virtuals
// ----------------------------------
- virtual wxDataFormat GetPreferredFormat() const
+ virtual wxDataFormat GetPreferredFormat(Direction WXUNUSED(dir)) const
{
return m_formatShape;
}
- virtual size_t GetFormatCount() const
+ virtual size_t GetFormatCount(Direction dir) const
{
- // +1 for our custom format
- return m_dataobj.GetFormatCount() + 1;
+ // our custom format is supported by both GetData() and SetData()
+ size_t nFormats = 1;
+ if ( dir == Get )
+ {
+ // but the bitmap format(s) are only supported for output
+ nFormats += m_dobjBitmap.GetFormatCount(dir);
+
+#ifdef USE_METAFILES
+ nFormats += m_dobjMetaFile.GetFormatCount(dir);
+#endif // Windows
+ }
+
+ return nFormats;
}
- virtual void GetAllFormats(wxDataFormat *formats) const
+ virtual void GetAllFormats(wxDataFormat *formats, Direction dir) const
{
formats[0] = m_formatShape;
- m_dataobj.GetAllFormats(&formats[1]);
+ if ( dir == Get )
+ {
+ // 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
+ }
}
virtual size_t GetDataSize(const wxDataFormat& format) const
{
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( format == wxDF_BITMAP, "unsupported format" );
+ wxASSERT_MSG( m_dobjBitmap.IsSupported(format),
+ "unexpected format" );
if ( !m_hasBitmap )
CreateBitmap();
- return m_dataobj.GetDataSize(format);
+ return m_dobjBitmap.GetDataSize();
}
}
- virtual void GetDataHere(const wxDataFormat& format, void *pBuf) const
+ virtual bool GetDataHere(const wxDataFormat& format, void *pBuf) const
{
if ( format == m_formatShape )
{
m_shape->GetDataHere(pBuf);
+
+ 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( format == wxDF_BITMAP, "unsupported format" );
+ wxASSERT_MSG( m_dobjBitmap.IsSupported(format),
+ "unexpected format" );
if ( !m_hasBitmap )
CreateBitmap();
- m_dataobj.GetDataHere(format, pBuf);
+ return m_dobjBitmap.GetDataHere(pBuf);
}
}
+ virtual bool SetData(const wxDataFormat& format,
+ size_t len, const void *buf)
+ {
+ wxCHECK_MSG( format == m_formatShape, FALSE, "unsupported format" );
+
+ delete m_shape;
+ m_shape = DnDShape::New(buf);
+
+ // 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
};
void SetShape(DnDShape *shape);
// callbacks
+ void OnNewShape(wxCommandEvent& event);
+ void OnEditShape(wxCommandEvent& event);
+ void OnClearShape(wxCommandEvent& event);
+
+ void OnCopyShape(wxCommandEvent& event);
+ void OnPasteShape(wxCommandEvent& event);
+
+ void OnUpdateUICopy(wxUpdateUIEvent& event);
+ void OnUpdateUIPaste(wxUpdateUIEvent& event);
+
void OnDrag(wxMouseEvent& event);
- void OnEdit(wxMouseEvent& event);
void OnPaint(wxPaintEvent& event);
- void OnDrop(long x, long y, DnDShape *shape);
+ void OnDrop(wxCoord x, wxCoord y, DnDShape *shape);
private:
DnDShape *m_shape;
+ static DnDShapeFrame *ms_lastDropTarget;
+
DECLARE_EVENT_TABLE()
};
{
public:
DnDShapeDropTarget(DnDShapeFrame *frame)
+ : wxDropTarget(new DnDShapeDataObject)
{
m_frame = frame;
-
- // the same as used by DnDShapeDataObject
- m_formatShape.SetId(shapeFormatId);
}
// 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 bool OnDrop(long x, long y, const void *pData)
+ virtual wxDragResult OnData(wxCoord x, wxCoord y, wxDragResult def)
{
- m_frame->OnDrop(x, y, DnDShape::New(pData));
+ if ( !GetData() )
+ {
+ wxLogError("Failed to get drag and drop data");
- return TRUE;
- }
+ return wxDragNone;
+ }
-protected:
- virtual size_t GetFormatCount() const { return 1; }
- virtual wxDataFormat GetFormat(size_t WXUNUSED(n)) const
- { return m_formatShape; }
+ m_frame->OnDrop(x, y,
+ ((DnDShapeDataObject *)GetDataObject())->GetShape());
+
+ return def;
+ }
private:
DnDShapeFrame *m_frame;
- wxDataFormat m_formatShape;
};
+// ----------------------------------------------------------------------------
+// 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_HasText,
- Menu_HasBitmap,
- Menu_ToBeGreyed, /* for testing */
- Menu_ToBeDeleted, /* for testing */
+ Menu_PasteMFile,
+ Menu_CopyFiles,
+ Menu_Shape_New = 500,
+ Menu_Shape_Edit,
+ Menu_Shape_Clear,
+ Menu_ShapeClipboard_Copy,
+ Menu_ShapeClipboard_Paste,
Button_Colour = 1001
};
EVT_MENU(Menu_Paste, DnDFrame::OnPaste)
EVT_MENU(Menu_CopyBitmap, DnDFrame::OnCopyBitmap)
EVT_MENU(Menu_PasteBitmap,DnDFrame::OnPasteBitmap)
- EVT_MENU(Menu_HasText, DnDFrame::OnClipboardHasText)
- EVT_MENU(Menu_HasBitmap, DnDFrame::OnClipboardHasBitmap)
+#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_UPDATE_UI(Menu_PasteBitmap, DnDFrame::OnUpdateUIPasteBitmap)
EVT_LEFT_DOWN( DnDFrame::OnLeftDown)
EVT_RIGHT_DOWN( DnDFrame::OnRightDown)
END_EVENT_TABLE()
BEGIN_EVENT_TABLE(DnDShapeFrame, wxFrame)
- EVT_RIGHT_DOWN(DnDShapeFrame::OnDrag)
- EVT_LEFT_DCLICK(DnDShapeFrame::OnEdit)
+ EVT_MENU(Menu_Shape_New, DnDShapeFrame::OnNewShape)
+ EVT_MENU(Menu_Shape_Edit, DnDShapeFrame::OnEditShape)
+ EVT_MENU(Menu_Shape_Clear, DnDShapeFrame::OnClearShape)
+
+ EVT_MENU(Menu_ShapeClipboard_Copy, DnDShapeFrame::OnCopyShape)
+ EVT_MENU(Menu_ShapeClipboard_Paste, DnDShapeFrame::OnPasteShape)
+
+ EVT_UPDATE_UI(Menu_ShapeClipboard_Copy, DnDShapeFrame::OnUpdateUICopy)
+ EVT_UPDATE_UI(Menu_ShapeClipboard_Paste, DnDShapeFrame::OnUpdateUIPaste)
+
+ EVT_LEFT_DOWN(DnDShapeFrame::OnDrag)
+
EVT_PAINT(DnDShapeFrame::OnPaint)
END_EVENT_TABLE()
BEGIN_EVENT_TABLE(DnDShapeDialog, wxDialog)
- EVT_BUTTON(Button_Colour, OnColour)
+ 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
// `Main program' equivalent, creating windows and returning main app frame
bool DnDApp::OnInit()
{
+ // load our ressources
+ wxPathList pathList;
+ pathList.Add(".");
+#ifdef __WXMSW__
+ pathList.Add("./Debug");
+ pathList.Add("./Release");
+#endif // wxMSW
+
+ wxString path = pathList.FindValidPath("dnd.wxr");
+ if ( !path )
+ {
+ wxLogError("Can't find the resource file dnd.wxr in the current "
+ "directory, aborting.");
+
+ return FALSE;
+ }
+
+ 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);
SetTopWindow(frame);
- wxDefaultResourceTable->ParseResourceFile("dnd.wxr");
-
return TRUE;
}
file_menu->Append(Menu_Quit, "E&xit");
wxMenu *log_menu = new wxMenu;
- log_menu->Append(Menu_Clear, "Clear");
+ 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");
- clip_menu->Append(Menu_PasteBitmap, "&Paste bitmap");
+ 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_HasText, "Clipboard has &text\tCtrl+T");
- clip_menu->Append(Menu_HasBitmap, "Clipboard has a &bitmap\tCtrl+B");
+ clip_menu->Append(Menu_CopyFiles, "Copy &files\tCtrl+F");
wxMenuBar *menu_bar = new wxMenuBar;
menu_bar->Append(file_menu, "&File");
wxString strFile("Drop files here!"), strText("Drop text on me");
- m_ctrlFile = new wxListBox(this, -1, pos, size, 1, &strFile, wxLB_HSCROLL | wxLB_ALWAYS_SB );
- m_ctrlText = new wxListBox(this, -1, pos, size, 1, &strText, wxLB_HSCROLL | wxLB_ALWAYS_SB );
+ m_ctrlFile = new wxListBox(this, -1, pos, size, 1, &strFile,
+ wxLB_HSCROLL | wxLB_ALWAYS_SB );
+ m_ctrlText = new wxListBox(this, -1, pos, size, 1, &strText,
+ wxLB_HSCROLL | wxLB_ALWAYS_SB );
m_ctrlLog = new wxTextCtrl(this, -1, "", pos, size,
- wxTE_MULTILINE | wxTE_READONLY |
- wxSUNKEN_BORDER );
+ wxTE_MULTILINE | wxTE_READONLY |
+ wxSUNKEN_BORDER );
- // redirect log messages to the text window and switch on OLE messages
- // logging
- wxLog::AddTraceMask(wxTRACE_OleCalls);
+ // redirect log messages to the text window
m_pLog = new wxLogTextCtrl(m_ctrlLog);
m_pLogPrev = wxLog::SetActiveTarget(m_pLog);
c = new wxLayoutConstraints;
c->left.SameAs (this, wxLeft);
c->right.SameAs (this, wxRight);
- c->height.PercentOf(this, wxHeight, 30);
+ c->height.PercentOf(this, wxHeight, 50);
c->top.SameAs(m_ctrlText, wxBottom);
m_ctrlLog->SetConstraints(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())
- dc.DrawBitmap( m_bitmap, 280, h-120, TRUE );
+ dc.DrawText( "Drag text from here!", 100, h-50 );
}
-void DnDFrame::OnClipboardHasText(wxCommandEvent& WXUNUSED(event))
+void DnDFrame::OnUpdateUIPasteText(wxUpdateUIEvent& event)
{
- if ( !wxTheClipboard->Open() )
- {
- wxLogError( _T("Can't open clipboard.") );
-
- return;
- }
-
- if ( !wxTheClipboard->IsSupported( wxDF_TEXT ) )
- {
- wxLogMessage( _T("No text on the clipboard") );
- }
- else
- {
- wxLogMessage( _T("There is text on the clipboard") );
- }
+#ifdef __WXDEBUG__
+ // too many trace messages if we don't do it - this function is called
+ // very often
+ wxLogNull nolog;
+#endif
- wxTheClipboard->Close();
+ event.Enable( wxTheClipboard->IsSupported(wxDF_TEXT) );
}
-void DnDFrame::OnClipboardHasBitmap(wxCommandEvent& WXUNUSED(event))
+void DnDFrame::OnUpdateUIPasteBitmap(wxUpdateUIEvent& event)
{
- if ( !wxTheClipboard->Open() )
- {
- wxLogError( _T("Can't open clipboard.") );
-
- return;
- }
-
- if ( !wxTheClipboard->IsSupported( wxDF_BITMAP ) )
- {
- wxLogMessage( _T("No bitmap on the clipboard") );
- }
- else
- {
- wxLogMessage( _T("There is a bitmap on the clipboard") );
- }
+#ifdef __WXDEBUG__
+ // too many trace messages if we don't do it - this function is called
+ // very often
+ wxLogNull nolog;
+#endif
- wxTheClipboard->Close();
+ event.Enable( wxTheClipboard->IsSupported(wxDF_BITMAP) );
}
void DnDFrame::OnNewFrame(wxCommandEvent& WXUNUSED(event))
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, wxICON(mondrian));
+/*
+ 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;
void DnDFrame::OnRightDown(wxMouseEvent &event )
{
- wxMenu *menu = new wxMenu;
+ wxMenu menu("Dnd sample menu");
- menu->Append(Menu_Drag, "&Test drag...");
- menu->Append(Menu_About, "&About");
- menu->Append(Menu_Quit, "E&xit");
- menu->Append(Menu_ToBeDeleted, "To be deleted");
- menu->Append(Menu_ToBeGreyed, "To be greyed");
+ menu.Append(Menu_Drag, "&Test drag...");
+ menu.AppendSeparator();
+ menu.Append(Menu_About, "&About");
- menu->Delete( Menu_ToBeDeleted );
- menu->Enable( Menu_ToBeGreyed, FALSE );
-
- PopupMenu( menu, event.GetX(), event.GetY() );
+ PopupMenu( &menu, event.GetX(), event.GetY() );
}
DnDFrame::~DnDFrame()
}
wxBitmapDataObject data;
- if ( !wxTheClipboard->GetData(&data) )
+ if ( !wxTheClipboard->GetData(data) )
{
wxLogError(_T("Can't paste bitmap from the clipboard"));
}
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__
+ wxFileDialog dialog(this, "Select a file to copy", "", "",
+ "All files (*.*)|*.*", 0);
+
+ wxArrayString filenames;
+ while ( dialog.ShowModal() == wxID_OK )
+ {
+ filenames.Add(dialog.GetPath());
+ }
+
+ if ( !filenames.IsEmpty() )
+ {
+ 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 )
+ {
+ wxLogError("Can't open clipboard");
+ }
+ else
+ {
+ if ( !wxTheClipboard->AddData(dobj) )
+ {
+ wxLogError("Can't copy file(s) to the clipboard");
+ }
+ else
+ {
+ wxLogStatus(this, "%d file%s copied to the clipboard",
+ count, count == 1 ? "" : "s");
+ }
+ }
+ }
+ else
+ {
+ wxLogStatus(this, "Aborted");
+ }
+#else // !MSW
+ wxLogError("Sorry, not implemented");
+#endif // MSW/!MSW
+}
+
// ---------------------------------------------------------------------------
// text clipboard
// ---------------------------------------------------------------------------
}
wxTextDataObject text;
- if ( !wxTheClipboard->GetData(&text) )
+ if ( !wxTheClipboard->GetData(text) )
{
wxLogError(_T("Can't paste data from the clipboard"));
}
// Notifications called by the base class
// ----------------------------------------------------------------------------
-bool DnDText::OnDropText( wxDropPointCoord, wxDropPointCoord, const wxChar *psz )
+bool DnDText::OnDropText(wxCoord, wxCoord, const wxString& text)
{
- m_pOwner->Append(psz);
+ m_pOwner->Append(text);
return TRUE;
}
-bool DnDFile::OnDropFiles( wxDropPointCoord, wxDropPointCoord, size_t nFiles,
- const wxChar* const aszFiles[])
+bool DnDFile::OnDropFiles(wxCoord, wxCoord, const wxArrayString& filenames)
{
+ size_t nFiles = filenames.GetCount();
wxString str;
str.Printf( _T("%d files dropped"), nFiles);
m_pOwner->Append(str);
for ( size_t n = 0; n < nFiles; n++ ) {
- m_pOwner->Append(aszFiles[n]);
+ m_pOwner->Append(filenames[n]);
}
return TRUE;
bool DnDShapeDialog::TransferDataToWindow()
{
+
if ( m_shape )
{
m_radio->SetSelection(m_shape->GetKind());
// DnDShapeFrame
// ----------------------------------------------------------------------------
+DnDShapeFrame *DnDShapeFrame::ms_lastDropTarget = NULL;
+
DnDShapeFrame::DnDShapeFrame(wxFrame *parent)
: wxFrame(parent, -1, "Shape Frame",
wxDefaultPosition, wxSize(250, 150))
{
- SetBackgroundColour(*wxWHITE);
-
CreateStatusBar();
- SetStatusText("Double click the frame to create a shape");
+ wxMenu *menuShape = new wxMenu;
+ 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\tCtrl-L");
+
+ wxMenu *menuClipboard = new wxMenu;
+ menuClipboard->Append(Menu_ShapeClipboard_Copy, "&Copy\tCtrl-C");
+ menuClipboard->Append(Menu_ShapeClipboard_Paste, "&Paste\tCtrl-V");
+
+ wxMenuBar *menubar = new wxMenuBar;
+ menubar->Append(menuShape, "&Shape");
+ menubar->Append(menuClipboard, "&Clipboard");
+
+ SetMenuBar(menubar);
+
+ SetStatusText("Press Ctrl-S to create a new shape");
SetDropTarget(new DnDShapeDropTarget(this));
m_shape = NULL;
+
+ SetBackgroundColour(*wxWHITE);
}
DnDShapeFrame::~DnDShapeFrame()
{
- delete m_shape;
+ if (m_shape)
+ delete m_shape;
}
void DnDShapeFrame::SetShape(DnDShape *shape)
{
- delete m_shape;
+ if (m_shape)
+ delete m_shape;
m_shape = shape;
Refresh();
}
// start drag operation
DnDShapeDataObject shapeData(m_shape);
- wxDropSource source(shapeData, this, wxICON(mondrian));
+ wxDropSource source(shapeData, this);
const char *pc = NULL;
switch ( source.DoDragDrop(TRUE) )
case wxDragMove:
pc = "moved";
- SetShape(NULL);
+ if ( ms_lastDropTarget != this )
+ {
+ // don't delete the shape if we dropped it on ourselves!
+ SetShape(NULL);
+ }
break;
case wxDragCancel:
//else: status text already set
}
-void DnDShapeFrame::OnEdit(wxMouseEvent& event)
+void DnDShapeFrame::OnDrop(wxCoord x, wxCoord y, DnDShape *shape)
+{
+ ms_lastDropTarget = this;
+
+ wxPoint pt(x, y);
+
+ wxString s;
+ s.Printf("Shape dropped at (%ld, %ld)", pt.x, pt.y);
+ SetStatusText(s);
+
+ shape->Move(pt);
+ SetShape(shape);
+}
+
+void DnDShapeFrame::OnEditShape(wxCommandEvent& event)
{
DnDShapeDialog dlg(this, m_shape);
if ( dlg.ShowModal() == wxID_OK )
if ( m_shape )
{
- SetStatusText("Right click now drag the shape to another frame");
+ SetStatusText("You can now drag the shape to another frame");
}
}
}
-void DnDShapeFrame::OnPaint(wxPaintEvent& event)
+void DnDShapeFrame::OnNewShape(wxCommandEvent& event)
+{
+ SetShape(new DnDEllipticShape(wxPoint(10, 10), wxSize(80, 60), *wxRED));
+
+ SetStatusText("You can now drag the shape to another frame");
+}
+
+void DnDShapeFrame::OnClearShape(wxCommandEvent& event)
+{
+ SetShape(NULL);
+}
+
+void DnDShapeFrame::OnCopyShape(wxCommandEvent& event)
{
if ( m_shape )
- m_shape->Draw(wxPaintDC(this));
+ {
+ wxClipboardLocker clipLocker;
+ if ( !clipLocker )
+ {
+ wxLogError("Can't open the clipboard");
+
+ return;
+ }
+
+ wxTheClipboard->AddData(new DnDShapeDataObject(m_shape));
+ }
+}
+
+void DnDShapeFrame::OnPasteShape(wxCommandEvent& event)
+{
+ wxClipboardLocker clipLocker;
+ if ( !clipLocker )
+ {
+ wxLogError("Can't open the clipboard");
+
+ return;
+ }
+
+ DnDShapeDataObject shapeDataObject(NULL);
+ if ( wxTheClipboard->GetData(shapeDataObject) )
+ {
+ SetShape(shapeDataObject.GetShape());
+ }
else
- event.Skip();
+ {
+ wxLogStatus("No shape on the clipboard");
+ }
}
-void DnDShapeFrame::OnDrop(long x, long y, DnDShape *shape)
+void DnDShapeFrame::OnUpdateUICopy(wxUpdateUIEvent& event)
{
- wxString s;
- s.Printf("Drop occured at (%ld, %ld)", x, y);
- SetStatusText(s);
+ event.Enable( m_shape != NULL );
+}
- SetShape(shape);
+void DnDShapeFrame::OnUpdateUIPaste(wxUpdateUIEvent& event)
+{
+ event.Enable( wxTheClipboard->IsSupported(wxDataFormat(shapeFormatId)) );
+}
+
+void DnDShapeFrame::OnPaint(wxPaintEvent& event)
+{
+ if ( m_shape )
+ {
+ wxPaintDC dc(this);
+
+ m_shape->Draw(dc);
+ }
+ else
+ {
+ event.Skip();
+ }
}
// ----------------------------------------------------------------------------
// 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
{
- wxBitmap bitmap;
+ wxPoint pos = m_shape->GetPosition();
+ wxSize size = m_shape->GetSize();
+ int x = pos.x + size.x,
+ y = pos.y + size.y;
+ wxBitmap bitmap(x, y);
wxMemoryDC dc;
dc.SelectObject(bitmap);
+ dc.SetBrush(wxBrush("white", wxSOLID));
+ dc.Clear();
m_shape->Draw(dc);
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