X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/5a1c877f57de295ba12f75e1da6f98f033f7257c..c48792de4abe190910c0cb212c5df44d2ef87a7e:/samples/dnd/dnd.cpp diff --git a/samples/dnd/dnd.cpp b/samples/dnd/dnd.cpp index 4a2985894b..4f5f76d60e 100644 --- a/samples/dnd/dnd.cpp +++ b/samples/dnd/dnd.cpp @@ -46,6 +46,10 @@ #if defined(__WXGTK__) || defined(__WXMOTIF__) #include "mondrian.xpm" + + #include "dnd_copy.xpm" + #include "dnd_move.xpm" + #include "dnd_none.xpm" #endif // ---------------------------------------------------------------------------- @@ -76,6 +80,39 @@ private: 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 // ---------------------------------------------------------------------------- @@ -88,6 +125,81 @@ public: 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 // ---------------------------------------------------------------------------- @@ -135,7 +247,6 @@ private: *m_pLogPrev; wxString m_strText; - wxBitmap m_bitmap; }; // ---------------------------------------------------------------------------- @@ -438,16 +549,19 @@ public: return m_shape->GetDataSize(); } #ifdef USE_METAFILES - else if ( format == wxDF_METAFILE ) + else if ( m_dobjMetaFile.IsSupported(format) ) { if ( !m_hasMetaFile ) CreateMetaFile(); - return m_dobjMetaFile.GetDataSize(); + return m_dobjMetaFile.GetDataSize(format); } #endif // Windows else { + wxASSERT_MSG( m_dobjBitmap.IsSupported(format), + "unexpected format" ); + if ( !m_hasBitmap ) CreateBitmap(); @@ -464,16 +578,19 @@ public: return TRUE; } #ifdef USE_METAFILES - else if ( format == wxDF_METAFILE ) + else if ( m_dobjMetaFile.IsSupported(format) ) { if ( !m_hasMetaFile ) CreateMetaFile(); - return m_dobjMetaFile.GetDataHere(pBuf); + return m_dobjMetaFile.GetDataHere(format, pBuf); } #endif // Windows else { + wxASSERT_MSG( m_dobjBitmap.IsSupported(format), + "unexpected format" ); + if ( !m_hasBitmap ) CreateBitmap(); @@ -627,6 +744,16 @@ 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 // ---------------------------------------------------------------------------- @@ -697,6 +824,16 @@ 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 // ============================================================================ @@ -817,9 +954,10 @@ DnDFrame::DnDFrame(wxFrame *frame, char *title, int x, int y, int w, int h) 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; @@ -863,15 +1001,7 @@ void DnDFrame::OnPaint(wxPaintEvent& WXUNUSED(event)) 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) @@ -973,14 +1103,10 @@ void DnDFrame::OnLeftDown(wxMouseEvent &WXUNUSED(event) ) textData.AddFile( "/file1.txt" ); textData.AddFile( "/file2.txt" ); */ - wxDropSource source(textData, this - -#ifdef __WXMSW__ - ,wxCURSOR_PENCIL, // for copy - wxCURSOR_SPRAYCAN, // for move - wxCURSOR_QUESTION_ARROW // for nothing -#endif - ); + wxDropSource source(textData, this, + wxDROP_ICON(dnd_copy), + wxDROP_ICON(dnd_move), + wxDROP_ICON(dnd_none)); const char *pc; @@ -1114,9 +1240,11 @@ void DnDFrame::OnPasteBitmap(wxCommandEvent& WXUNUSED(event)) } 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(); @@ -1146,9 +1274,12 @@ void DnDFrame::OnPasteMetafile(wxCommandEvent& WXUNUSED(event)) } else { - wxLogMessage(_T("Metafile pasted from the clipboard")); + const wxMetaFile& mf = data.GetMetafile(); + + wxLogMessage(_T("Metafile %dx%d pasted from the clipboard"), + mf.GetWidth(), mf.GetHeight()); - // TODO: show it somewhere + ShowMetaFile(mf); } } @@ -1414,19 +1545,19 @@ DnDShapeFrame::DnDShapeFrame(wxFrame *parent) 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(); @@ -1527,7 +1658,6 @@ void DnDShapeFrame::OnCopyShape(wxCommandEvent& event) { if ( m_shape ) { -#if 1 wxClipboardLocker clipLocker; if ( !clipLocker ) { @@ -1537,22 +1667,6 @@ void DnDShapeFrame::OnCopyShape(wxCommandEvent& event) } wxTheClipboard->AddData(new DnDShapeDataObject(m_shape)); -#else - // VZ: temp test code, will remove - wxOpenClipboard(); - - wxMetaFileDC dcMF; - - m_shape->Draw(dcMF); - - wxMetafile *mf = dcMF.Close(); - - wxPoint pos = m_shape->GetPosition(); - wxSize size = m_shape->GetSize(); - wxSetClipboardData(wxDF_METAFILE, mf, pos.x + size.x, pos.y + size.y); - - wxCloseClipboard(); -#endif } } @@ -1639,20 +1753,20 @@ DnDShape *DnDShape::New(const void *buf) void DnDShapeDataObject::CreateMetaFile() const { - wxMetaFileDC dcMF; + 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(); - wxPoint pos = m_shape->GetPosition(); - wxSize size = m_shape->GetSize(); - mf->SetWidth(pos.x + size.x); - mf->SetHeight(pos.y + size.y); - DnDShapeDataObject *self = (DnDShapeDataObject *)this; // const_cast self->m_dobjMetaFile.SetMetafile(*mf); self->m_hasMetaFile = TRUE; + + delete mf; } #endif // Windows @@ -1676,3 +1790,40 @@ void DnDShapeDataObject::CreateBitmap() const 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