X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/d1b15f03b8e614c83541ca3487f847f61122b514..8601b2e15bf924d4be6b7843064028e514a71ec8:/samples/dnd/dnd.cpp diff --git a/samples/dnd/dnd.cpp b/samples/dnd/dnd.cpp index e78b54aa2b..9af14885d2 100644 --- a/samples/dnd/dnd.cpp +++ b/samples/dnd/dnd.cpp @@ -19,8 +19,20 @@ #include "wx/wx.h" #endif -#ifdef __WXMOTIF__ - #error Sorry, drag and drop is not yet implemented on wxMotif. +#if !wxUSE_DRAG_AND_DROP + #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 + +#define USE_RESOURCES 0 +#if !wxUSE_RESOURCES +#undef USE_RESOURCES +#define USE_RESOURCES 0 #endif #include "wx/intl.h" @@ -31,9 +43,23 @@ #include "wx/filedlg.h" #include "wx/image.h" #include "wx/clipbrd.h" +#include "wx/colordlg.h" +#if USE_RESOURCES + #include "wx/resource.h" +#else + #include "wx/sizer.h" +#endif + +#ifdef USE_METAFILES + #include "wx/metafile.h" +#endif // Windows -#if defined(__WXGTK__) || defined(__WXMOTIF__) +#if defined(__WXGTK__) || defined(__WXX11__) || defined(__WXMOTIF__) || defined(__WXMAC__) #include "mondrian.xpm" + + #include "dnd_copy.xpm" + #include "dnd_move.xpm" + #include "dnd_none.xpm" #endif // ---------------------------------------------------------------------------- @@ -41,15 +67,12 @@ // 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; @@ -60,13 +83,49 @@ class DnDFile : public wxFileDropTarget 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; }; +// ---------------------------------------------------------------------------- +// Define a custom dtop target accepting URLs +// ---------------------------------------------------------------------------- + +class 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 wxDragLink; // At least IE 5.x needs wxDragLink, the + // other browsers on MSW seem okay with it too. + } + + // 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 // ---------------------------------------------------------------------------- @@ -74,14 +133,90 @@ private: class DnDApp : public wxApp { public: - bool OnInit(); + virtual bool OnInit(); }; IMPLEMENT_APP(DnDApp); // ---------------------------------------------------------------------------- -// Define a new frame type +// 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 // ---------------------------------------------------------------------------- + class DnDFrame : public wxFrame { public: @@ -89,34 +224,551 @@ public: ~DnDFrame(); void OnPaint(wxPaintEvent& event); + void OnSize(wxSizeEvent& event); void OnQuit (wxCommandEvent& event); void OnAbout(wxCommandEvent& event); void OnDrag (wxCommandEvent& event); + 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; }; +// ---------------------------------------------------------------------------- +// A shape is an example of application-specific data which may be transported +// via drag-and-drop or clipboard: in our case, we have different geometric +// shapes, each one with its own colour and position +// ---------------------------------------------------------------------------- + +class DnDShape +{ +public: + enum Kind + { + None, + Triangle, + Rectangle, + Ellipse + }; + + DnDShape(const wxPoint& pos, + const wxSize& size, + const wxColour& col) + : m_pos(pos), m_size(size), m_col(col) + { + } + + // 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 (might use streams too...) + // ------------------------------------------------------------------------ + + // restore from buffer + static DnDShape *New(const void *buf); + + virtual size_t GetDataSize() const + { + return sizeof(ShapeDump); + } + + virtual void GetDataHere(void *buf) const + { + ShapeDump& dump = *(ShapeDump *)buf; + dump.x = m_pos.x; + dump.y = m_pos.y; + dump.w = m_size.x; + dump.h = m_size.y; + dump.r = m_col.Red(); + dump.g = m_col.Green(); + dump.b = m_col.Blue(); + dump.k = GetKind(); + } + + // accessors + const wxPoint& GetPosition() const { return m_pos; } + 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) + { + dc.SetPen(wxPen(m_col, 1, wxSOLID)); + } + +protected: + wxPoint GetCentre() const + { return wxPoint(m_pos.x + m_size.x / 2, m_pos.y + m_size.y / 2); } + + struct ShapeDump + { + int x, y, // position + w, h, // size + r, g, b, // colour + k; // kind + }; + + wxPoint m_pos; + wxSize m_size; + wxColour m_col; +}; + +class DnDTriangularShape : public DnDShape +{ +public: + DnDTriangularShape(const wxPoint& pos, + const wxSize& size, + const wxColour& col) + : DnDShape(pos, size, col) + { + wxLogMessage(wxT("DnDTriangularShape is being created")); + } + + virtual ~DnDTriangularShape() + { + wxLogMessage(wxT("DnDTriangularShape is being deleted")); + } + + virtual Kind GetKind() const { return Triangle; } + virtual void Draw(wxDC& dc) + { + DnDShape::Draw(dc); + + // well, it's a bit difficult to describe a triangle by position and + // size, but we're not doing geometry here, do we? ;-) + wxPoint p1(m_pos); + wxPoint p2(m_pos.x + m_size.x, m_pos.y); + wxPoint p3(m_pos.x, m_pos.y + m_size.y); + + dc.DrawLine(p1, p2); + dc.DrawLine(p2, p3); + dc.DrawLine(p3, p1); + +#ifdef __WXMSW__ + dc.FloodFill(GetCentre(), m_col, wxFLOOD_BORDER); +#endif + } +}; + +class DnDRectangularShape : public DnDShape +{ +public: + DnDRectangularShape(const wxPoint& pos, + const wxSize& size, + const wxColour& col) + : DnDShape(pos, size, col) + { + wxLogMessage(wxT("DnDRectangularShape is being created")); + } + + virtual ~DnDRectangularShape() + { + wxLogMessage(wxT("DnDRectangularShape is being deleted")); + } + + virtual Kind GetKind() const { return Rectangle; } + virtual void Draw(wxDC& dc) + { + DnDShape::Draw(dc); + + wxPoint p1(m_pos); + wxPoint p2(p1.x + m_size.x, p1.y); + wxPoint p3(p2.x, p2.y + m_size.y); + wxPoint p4(p1.x, p3.y); + + dc.DrawLine(p1, p2); + dc.DrawLine(p2, p3); + dc.DrawLine(p3, p4); + dc.DrawLine(p4, p1); + +#ifdef __WXMSW__ + dc.FloodFill(GetCentre(), m_col, wxFLOOD_BORDER); +#endif + } +}; + +class DnDEllipticShape : public DnDShape +{ +public: + DnDEllipticShape(const wxPoint& pos, + const wxSize& size, + const wxColour& col) + : DnDShape(pos, size, col) + { + wxLogMessage(wxT("DnDEllipticShape is being created")); + } + + virtual ~DnDEllipticShape() + { + wxLogMessage(wxT("DnDEllipticShape is being deleted")); + } + + virtual Kind GetKind() const { return Ellipse; } + virtual void Draw(wxDC& dc) + { + DnDShape::Draw(dc); + + dc.DrawEllipse(m_pos, m_size); + +#ifdef __WXMSW__ + dc.FloodFill(GetCentre(), m_col, wxFLOOD_BORDER); +#endif + } +}; + +// ---------------------------------------------------------------------------- +// A wxDataObject specialisation for the application-specific data +// ---------------------------------------------------------------------------- + +static const wxChar *shapeFormatId = wxT("wxShape"); + +class DnDShapeDataObject : public wxDataObject +{ +public: + // ctor doesn't copy the pointer, so it shouldn't go away while this object + // is alive + DnDShapeDataObject(DnDShape *shape = (DnDShape *)NULL) + { + 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 + m_formatShape.SetId(shapeFormatId); + + // 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(Direction WXUNUSED(dir)) const + { + return m_formatShape; + } + + virtual size_t GetFormatCount(Direction dir) const + { + // 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, Direction dir) const + { + formats[0] = m_formatShape; + 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 + { + if ( format == m_formatShape ) + { + 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), + wxT("unexpected format") ); + + if ( !m_hasBitmap ) + CreateBitmap(); + + return m_dobjBitmap.GetDataSize(); + } + } + + 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( m_dobjBitmap.IsSupported(format), + wxT("unexpected format") ); + + if ( !m_hasBitmap ) + CreateBitmap(); + + return m_dobjBitmap.GetDataHere(pBuf); + } + } + + virtual bool SetData(const wxDataFormat& format, + size_t len, const void *buf) + { + wxCHECK_MSG( format == m_formatShape, FALSE, + wxT( "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_dobjBitmap (also sets m_hasBitmap) + void CreateBitmap() const; +#ifdef USE_METAFILES + void CreateMetaFile() const; +#endif // Windows + + wxDataFormat m_formatShape; // our custom format + + 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 +}; + +// ---------------------------------------------------------------------------- +// A dialog to edit shape properties +// ---------------------------------------------------------------------------- + +class DnDShapeDialog : public wxDialog +{ +public: + DnDShapeDialog(wxFrame *parent, DnDShape *shape); + + DnDShape *GetShape() const; + + virtual bool TransferDataToWindow(); + virtual bool TransferDataFromWindow(); + + void OnColour(wxCommandEvent& event); + +private: + // input + DnDShape *m_shape; + + // output + DnDShape::Kind m_shapeKind; + wxPoint m_pos; + wxSize m_size; + wxColour m_col; + + // controls + wxRadioBox *m_radio; + wxTextCtrl *m_textX, + *m_textY, + *m_textW, + *m_textH; + + DECLARE_EVENT_TABLE() +}; + +// ---------------------------------------------------------------------------- +// A frame for the shapes which can be drag-and-dropped between frames +// ---------------------------------------------------------------------------- + +class DnDShapeFrame : public wxFrame +{ +public: + DnDShapeFrame(wxFrame *parent); + ~DnDShapeFrame(); + + 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 OnPaint(wxPaintEvent& event); + void OnDrop(wxCoord x, wxCoord y, DnDShape *shape); + +private: + DnDShape *m_shape; + + static DnDShapeFrame *ms_lastDropTarget; + + DECLARE_EVENT_TABLE() +}; + +// ---------------------------------------------------------------------------- +// wxDropTarget derivation for DnDShapes +// ---------------------------------------------------------------------------- + +class DnDShapeDropTarget : public wxDropTarget +{ +public: + DnDShapeDropTarget(DnDShapeFrame *frame) + : wxDropTarget(new DnDShapeDataObject) + { + m_frame = frame; + } + + // override base class (pure) virtuals + 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) + { + if ( !GetData() ) + { + wxLogError(wxT("Failed to get drag and drop data")); + + return wxDragNone; + } + + m_frame->OnDrop(x, y, + ((DnDShapeDataObject *)GetDataObject())->GetShape()); + + return def; + } + +private: + 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 // ---------------------------------------------------------------------------- @@ -125,6 +777,7 @@ enum { Menu_Quit = 1, Menu_Drag, + Menu_NewFrame, Menu_About = 101, Menu_Help, Menu_Clear, @@ -132,41 +785,118 @@ enum 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 }; BEGIN_EVENT_TABLE(DnDFrame, wxFrame) EVT_MENU(Menu_Quit, DnDFrame::OnQuit) EVT_MENU(Menu_About, DnDFrame::OnAbout) EVT_MENU(Menu_Drag, DnDFrame::OnDrag) + EVT_MENU(Menu_NewFrame, DnDFrame::OnNewFrame) EVT_MENU(Menu_Help, DnDFrame::OnHelp) EVT_MENU(Menu_Clear, DnDFrame::OnLogClear) EVT_MENU(Menu_Copy, DnDFrame::OnCopy) 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) EVT_PAINT( DnDFrame::OnPaint) + EVT_SIZE( DnDFrame::OnSize) END_EVENT_TABLE() - // `Main program' equivalent, creating windows and returning main app frame +BEGIN_EVENT_TABLE(DnDShapeFrame, wxFrame) + 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, 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() { +#if USE_RESOURCES + // 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(wxT("Can't find the resource file dnd.wxr in the current ") + wxT("directory, aborting.")); + + return FALSE; + } + + wxDefaultResourceTable->ParseResourceFile(path); +#endif + + // 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); @@ -186,22 +916,16 @@ DnDFrame::DnDFrame(wxFrame *frame, char *title, int x, int y, int w, int h) CreateStatusBar(); - // construct sub menu for testing - wxMenu *sub_menu = new wxMenu; - sub_menu->Append(Menu_Quit, "E&xit"); - sub_menu->Append(Menu_Quit, "E&xit"); - sub_menu->Append(Menu_Quit, "E&xit"); - // construct menu wxMenu *file_menu = new wxMenu; file_menu->Append(Menu_Drag, "&Test drag..."); file_menu->AppendSeparator(); - file_menu->Append(Menu_Quit, "E&xit"); + file_menu->Append(Menu_NewFrame, "&New frame\tCtrl-N"); file_menu->AppendSeparator(); - file_menu->Append( 0, "More exit menus", sub_menu); + 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..."); @@ -209,15 +933,18 @@ DnDFrame::DnDFrame(wxFrame *frame, char *title, int x, int y, int w, int h) help_menu->Append(Menu_About, "&About"); wxMenu *clip_menu = new wxMenu; - clip_menu->Append(Menu_Copy, "&Copy text\tCtrl+C"); - clip_menu->Append(Menu_Paste, "&Paste text\tCtrl+V"); + 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\tCtrl-Shift-C"); + clip_menu->Append(Menu_PasteBitmap, "Paste b&itmap\tCtrl-Shift-V"); +#ifdef USE_METAFILES clip_menu->AppendSeparator(); - clip_menu->Append(Menu_CopyBitmap, "&Copy bitmap"); - clip_menu->Append(Menu_PasteBitmap, "&Paste bitmap"); + 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"); menu_bar->Append(log_menu, "&Log"); @@ -232,19 +959,23 @@ DnDFrame::DnDFrame(wxFrame *frame, char *title, int x, int y, int w, int h) 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 ); - // redirect log messages to the text window (don't forget to delete it!) + wxTE_MULTILINE | wxTE_READONLY | + wxSUNKEN_BORDER ); + + // 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; @@ -268,7 +999,7 @@ DnDFrame::DnDFrame(wxFrame *frame, char *title, int x, int y, int w, int h) 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); @@ -280,6 +1011,13 @@ void DnDFrame::OnQuit(wxCommandEvent& WXUNUSED(event)) Close(TRUE); } +void DnDFrame::OnSize(wxSizeEvent& event) +{ + Refresh(); + + event.Skip(); +} + void DnDFrame::OnPaint(wxPaintEvent& WXUNUSED(event)) { int w = 0; @@ -287,53 +1025,38 @@ void DnDFrame::OnPaint(wxPaintEvent& WXUNUSED(event)) GetClientSize( &w, &h ); wxPaintDC dc(this); + dc.Clear(); 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.") ); +#ifdef __WXDEBUG__ + // too many trace messages if we don't do it - this function is called + // very often + wxLogNull nolog; +#endif - return; - } + event.Enable( wxTheClipboard->IsSupported(wxDF_BITMAP) ); +} - if ( !wxTheClipboard->IsSupported( wxDF_BITMAP ) ) - { - wxLogMessage( _T("No bitmap on the clipboard") ); - } - else - { - wxLogMessage( _T("There is a bitmap on the clipboard") ); - } +void DnDFrame::OnNewFrame(wxCommandEvent& WXUNUSED(event)) +{ + (new DnDShapeFrame(this))->Show(TRUE); - wxTheClipboard->Close(); + wxLogStatus(this, wxT("Double click the new frame to select a shape for it")); } void DnDFrame::OnDrag(wxCommandEvent& WXUNUSED(event)) @@ -391,22 +1114,29 @@ void DnDFrame::OnHelp(wxCommandEvent& /* event */) void DnDFrame::OnLogClear(wxCommandEvent& /* event */ ) { m_ctrlLog->Clear(); + m_ctrlText->Clear(); + m_ctrlFile->Clear(); } void DnDFrame::OnLeftDown(wxMouseEvent &WXUNUSED(event) ) { - if ( !m_strText.IsEmpty() ) + if ( !m_strText.IsEmpty() ) { // start drag operation -#ifdef __WXMSW__ wxTextDataObject textData(m_strText); - wxDropSource dragSource( textData, this ); -#else - wxDropSource dragSource( new wxTextDataObject (m_strText), this, wxIcon(mondrian_xpm) ); -#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; - switch ( dragSource.DoDragDrop(TRUE) ) + switch ( source.DoDragDrop(TRUE) ) { case wxDragError: pc = "Error!"; break; case wxDragNone: pc = "Nothing"; break; @@ -422,18 +1152,13 @@ void DnDFrame::OnLeftDown(wxMouseEvent &WXUNUSED(event) ) 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->Delete( Menu_ToBeDeleted ); - menu->Enable( Menu_ToBeGreyed, FALSE ); + menu.Append(Menu_Drag, "&Test drag..."); + menu.AppendSeparator(); + menu.Append(Menu_About, "&About"); - PopupMenu( menu, event.GetX(), event.GetY() ); + PopupMenu( &menu, event.GetX(), event.GetY() ); } DnDFrame::~DnDFrame() @@ -458,25 +1183,25 @@ void DnDFrame::OnCopyBitmap(wxCommandEvent& WXUNUSED(event)) #endif if (dialog.ShowModal() != wxID_OK) - { + { wxLogMessage( _T("Aborted file open") ); return; } - + if (dialog.GetPath().IsEmpty()) - { + { wxLogMessage( _T("Returned empty string.") ); return; } - + if (!wxFileExists(dialog.GetPath())) { wxLogMessage( _T("File doesn't exist.") ); return; } - + wxImage image; - image.LoadFile( dialog.GetPath(), + image.LoadFile( dialog.GetPath(), #ifdef __WXMSW__ wxBITMAP_TYPE_BMP #else @@ -485,14 +1210,14 @@ void DnDFrame::OnCopyBitmap(wxCommandEvent& WXUNUSED(event)) ); if (!image.Ok()) { - wxLogMessage( _T("Invalid image file...") ); + wxLogError( _T("Invalid image file...") ); return; } - - wxLogMessage( _T("Decoding image file...") ); + + wxLogStatus( _T("Decoding image file...") ); wxYield(); - - wxBitmap bitmap( image.ConvertToBitmap() ); + + wxBitmap bitmap( image ); if ( !wxTheClipboard->Open() ) { @@ -503,7 +1228,7 @@ void DnDFrame::OnCopyBitmap(wxCommandEvent& WXUNUSED(event)) wxLogMessage( _T("Creating wxBitmapDataObject...") ); wxYield(); - + if ( !wxTheClipboard->AddData(new wxBitmapDataObject(bitmap)) ) { wxLogError(_T("Can't copy image to the clipboard.")); @@ -535,20 +1260,112 @@ void DnDFrame::OnPasteBitmap(wxCommandEvent& WXUNUSED(event)) } 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(wxT("Can't open clipboard")); + } + else + { + if ( !wxTheClipboard->AddData(dobj) ) + { + wxLogError(wxT("Can't copy file(s) to the clipboard")); + } + else + { + wxLogStatus(this, wxT("%d file%s copied to the clipboard"), + count, count == 1 ? wxT("") : wxT("s")); + } + } + } + else + { + wxLogStatus(this, wxT("Aborted")); + } +#else // !MSW + wxLogError(wxT("Sorry, not implemented")); +#endif // MSW/!MSW +} + // --------------------------------------------------------------------------- // text clipboard // --------------------------------------------------------------------------- @@ -592,7 +1409,7 @@ void DnDFrame::OnPaste(wxCommandEvent& WXUNUSED(event)) } wxTextDataObject text; - if ( !wxTheClipboard->GetData(&text) ) + if ( !wxTheClipboard->GetData(text) ) { wxLogError(_T("Can't paste data from the clipboard")); } @@ -609,22 +1426,498 @@ void DnDFrame::OnPaste(wxCommandEvent& WXUNUSED(event)) // 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; +} + +// ---------------------------------------------------------------------------- +// DnDShapeDialog +// ---------------------------------------------------------------------------- + +DnDShapeDialog::DnDShapeDialog(wxFrame *parent, DnDShape *shape) +#if !USE_RESOURCES + :wxDialog( parent, 6001, wxT("Choose Shape"), wxPoint( 10, 10 ), + wxSize( 40, 40 ), + wxRAISED_BORDER|wxCAPTION|wxTHICK_FRAME|wxSYSTEM_MENU ) +#endif +{ + m_shape = shape; +#if USE_RESOURCES + LoadFromResource(parent, "dialogShape"); + + m_textX = (wxTextCtrl *)wxFindWindowByName("textX", this); + m_textY = (wxTextCtrl *)wxFindWindowByName("textY", this); + m_textW = (wxTextCtrl *)wxFindWindowByName("textW", this); + m_textH = (wxTextCtrl *)wxFindWindowByName("textH", this); + + m_radio = (wxRadioBox *)wxFindWindowByName("radio", this); +#else + wxBoxSizer* topSizer = new wxBoxSizer( wxVERTICAL ); + + // radio box + wxBoxSizer* shapesSizer = new wxBoxSizer( wxHORIZONTAL ); + const wxString choices[] = { wxT("None"), wxT("Triangle"), + wxT("Rectangle"), wxT("Ellipse") }; + + m_radio = new wxRadioBox( this, -1, wxT("&Shape"), + wxDefaultPosition, wxDefaultSize, 4, choices, 4, + wxRA_SPECIFY_COLS ); + shapesSizer->Add( m_radio, 0, wxGROW|wxALL, 5 ); + topSizer->Add( shapesSizer, 0, wxALL, 2 ); + + // attributes + wxStaticBox* box = new wxStaticBox( this, -1, wxT("&Attributes") ); + wxStaticBoxSizer* attrSizer = new wxStaticBoxSizer( box, wxHORIZONTAL ); + wxFlexGridSizer* xywhSizer = new wxFlexGridSizer( 4, 2 ); + + wxStaticText* st; + + st = new wxStaticText( this, -1, wxT("Position &X:") ); + m_textX = new wxTextCtrl( this, -1, wxEmptyString, wxDefaultPosition, + wxSize( 30, 20 ) ); + xywhSizer->Add( st, 1, wxGROW|wxALL, 2 ); + xywhSizer->Add( m_textX, 1, wxGROW|wxALL, 2 ); + + st = new wxStaticText( this, -1, wxT("Size &width:") ); + m_textW = new wxTextCtrl( this, -1, wxEmptyString, wxDefaultPosition, + wxSize( 30, 20 ) ); + xywhSizer->Add( st, 1, wxGROW|wxALL, 2 ); + xywhSizer->Add( m_textW, 1, wxGROW|wxALL, 2 ); + + st = new wxStaticText( this, -1, wxT("&Y:") ); + m_textY = new wxTextCtrl( this, -1, wxEmptyString, wxDefaultPosition, + wxSize( 30, 20 ) ); + xywhSizer->Add( st, 1, wxALL|wxALIGN_RIGHT, 2 ); + xywhSizer->Add( m_textY, 1, wxGROW|wxALL, 2 ); + + st = new wxStaticText( this, -1, wxT("&height:") ); + m_textH = new wxTextCtrl( this, -1, wxEmptyString, wxDefaultPosition, + wxSize( 30, 20 ) ); + xywhSizer->Add( st, 1, wxALL|wxALIGN_RIGHT, 2 ); + xywhSizer->Add( m_textH, 1, wxGROW|wxALL, 2 ); + + wxButton* col = new wxButton( this, Button_Colour, wxT("&Colour...") ); + attrSizer->Add( xywhSizer, 1, wxGROW ); + attrSizer->Add( col, 0, wxALL|wxALIGN_CENTRE_VERTICAL, 2 ); + topSizer->Add( attrSizer, 0, wxGROW|wxALL, 5 ); + + // buttons + wxBoxSizer* buttonSizer = new wxBoxSizer( wxHORIZONTAL ); + wxButton* bt; + bt = new wxButton( this, wxID_OK, wxT("Ok") ); + buttonSizer->Add( bt, 0, wxALL, 2 ); + bt = new wxButton( this, wxID_CANCEL, wxT("Cancel") ); + buttonSizer->Add( bt, 0, wxALL, 2 ); + topSizer->Add( buttonSizer, 0, wxALL|wxALIGN_RIGHT, 2 ); + + SetAutoLayout( TRUE ); + SetSizer( topSizer ); + topSizer->Fit( this ); +#endif +} + +DnDShape *DnDShapeDialog::GetShape() const +{ + switch ( m_shapeKind ) + { + default: + case DnDShape::None: return NULL; + case DnDShape::Triangle: return new DnDTriangularShape(m_pos, m_size, m_col); + case DnDShape::Rectangle: return new DnDRectangularShape(m_pos, m_size, m_col); + case DnDShape::Ellipse: return new DnDEllipticShape(m_pos, m_size, m_col); + } +} + +bool DnDShapeDialog::TransferDataToWindow() +{ + + if ( m_shape ) + { + m_radio->SetSelection(m_shape->GetKind()); + m_pos = m_shape->GetPosition(); + m_size = m_shape->GetSize(); + m_col = m_shape->GetColour(); + } + else + { + m_radio->SetSelection(DnDShape::None); + m_pos = wxPoint(1, 1); + m_size = wxSize(100, 100); + } + + m_textX->SetValue(wxString() << m_pos.x); + m_textY->SetValue(wxString() << m_pos.y); + m_textW->SetValue(wxString() << m_size.x); + m_textH->SetValue(wxString() << m_size.y); + + return TRUE; +} + +bool DnDShapeDialog::TransferDataFromWindow() +{ + m_shapeKind = (DnDShape::Kind)m_radio->GetSelection(); + + m_pos.x = wxAtoi(m_textX->GetValue()); + m_pos.y = wxAtoi(m_textY->GetValue()); + m_size.x = wxAtoi(m_textW->GetValue()); + m_size.y = wxAtoi(m_textH->GetValue()); + + if ( !m_pos.x || !m_pos.y || !m_size.x || !m_size.y ) + { + wxMessageBox("All sizes and positions should be non null!", + "Invalid shape", wxICON_HAND | wxOK, this); + + return FALSE; } return TRUE; } + +void DnDShapeDialog::OnColour(wxCommandEvent& WXUNUSED(event)) +{ + wxColourData data; + data.SetChooseFull(TRUE); + for (int i = 0; i < 16; i++) + { + wxColour colour(i*16, i*16, i*16); + data.SetCustomColour(i, colour); + } + + wxColourDialog dialog(this, &data); + if ( dialog.ShowModal() == wxID_OK ) + { + m_col = dialog.GetColourData().GetColour(); + } +} + +// ---------------------------------------------------------------------------- +// DnDShapeFrame +// ---------------------------------------------------------------------------- + +DnDShapeFrame *DnDShapeFrame::ms_lastDropTarget = NULL; + +DnDShapeFrame::DnDShapeFrame(wxFrame *parent) + : wxFrame(parent, -1, "Shape Frame", + wxDefaultPosition, wxSize(250, 150)) +{ + CreateStatusBar(); + + 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() +{ + if (m_shape) + delete m_shape; +} + +void DnDShapeFrame::SetShape(DnDShape *shape) +{ + if (m_shape) + delete m_shape; + m_shape = shape; + Refresh(); +} + +// callbacks +void DnDShapeFrame::OnDrag(wxMouseEvent& event) +{ + if ( !m_shape ) + { + event.Skip(); + + return; + } + + // start drag operation + DnDShapeDataObject shapeData(m_shape); + wxDropSource source(shapeData, this); + + const char *pc = NULL; + switch ( source.DoDragDrop(TRUE) ) + { + default: + case wxDragError: + wxLogError(wxT("An error occured during drag and drop operation")); + break; + + case wxDragNone: + SetStatusText("Nothing happened"); + break; + + case wxDragCopy: + pc = "copied"; + break; + + case wxDragMove: + pc = "moved"; + if ( ms_lastDropTarget != this ) + { + // don't delete the shape if we dropped it on ourselves! + SetShape(NULL); + } + break; + + case wxDragCancel: + SetStatusText("Drag and drop operation cancelled"); + break; + } + + if ( pc ) + { + SetStatusText(wxString("Shape successfully ") + pc); + } + //else: status text already set +} + +void DnDShapeFrame::OnDrop(wxCoord x, wxCoord y, DnDShape *shape) +{ + ms_lastDropTarget = this; + + wxPoint pt(x, y); + + wxString s; + s.Printf(wxT("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 ) + { + SetShape(dlg.GetShape()); + + if ( m_shape ) + { + SetStatusText("You can now drag the shape to another frame"); + } + } +} + +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 ) + { + wxClipboardLocker clipLocker; + if ( !clipLocker ) + { + wxLogError(wxT("Can't open the clipboard")); + + return; + } + + wxTheClipboard->AddData(new DnDShapeDataObject(m_shape)); + } +} + +void DnDShapeFrame::OnPasteShape(wxCommandEvent& event) +{ + wxClipboardLocker clipLocker; + if ( !clipLocker ) + { + wxLogError(wxT("Can't open the clipboard")); + + return; + } + + DnDShapeDataObject shapeDataObject(NULL); + if ( wxTheClipboard->GetData(shapeDataObject) ) + { + SetShape(shapeDataObject.GetShape()); + } + else + { + wxLogStatus(wxT("No shape on the clipboard")); + } +} + +void DnDShapeFrame::OnUpdateUICopy(wxUpdateUIEvent& event) +{ + event.Enable( m_shape != NULL ); +} + +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(); + } +} + +// ---------------------------------------------------------------------------- +// DnDShape +// ---------------------------------------------------------------------------- + +DnDShape *DnDShape::New(const void *buf) +{ + const ShapeDump& dump = *(const ShapeDump *)buf; + switch ( dump.k ) + { + case Triangle: + return new DnDTriangularShape(wxPoint(dump.x, dump.y), + wxSize(dump.w, dump.h), + wxColour(dump.r, dump.g, dump.b)); + + case Rectangle: + return new DnDRectangularShape(wxPoint(dump.x, dump.y), + wxSize(dump.w, dump.h), + wxColour(dump.r, dump.g, dump.b)); + + case Ellipse: + return new DnDEllipticShape(wxPoint(dump.x, dump.y), + wxSize(dump.w, dump.h), + wxColour(dump.r, dump.g, dump.b)); + + default: + wxFAIL_MSG(wxT("invalid shape!")); + return NULL; + } +} + +// ---------------------------------------------------------------------------- +// 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(); + 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(wxT("white"), wxSOLID)); + dc.Clear(); + m_shape->Draw(dc); + dc.SelectObject(wxNullBitmap); + + DnDShapeDataObject *self = (DnDShapeDataObject *)this; // const_cast + 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