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1. some warnings fixed in forty

Browse Source 
2. added test for a would-ve client data bug in wxTextCtrl
3. added support for metafiels to the dnd sample


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@5376 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Vadim Zeitlin
2000-01-14 00:17:41 +00:00
parent d9317fd472
commit ae3dd4a589
4 changed files with 180 additions and 54 deletions
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201
samples/dnd/dnd.cpp
View File

@@ -88,6 +88,81 @@ 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 +210,6 @@ private:
*m_pLogPrev;
wxString m_strText;
wxBitmap m_bitmap;
};
// ----------------------------------------------------------------------------
@@ -438,16 +512,19 @@ 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 +541,19 @@ 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 +707,16 @@ 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 +787,16 @@ 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
// ============================================================================
@@ -863,15 +963,7 @@ 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)
@@ -1114,9 +1206,11 @@ 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 +1240,12 @@ void DnDFrame::OnPasteMetafile(wxCommandEvent& WXUNUSED(event))
}
else
{
wxLogMessage(_T("Metafile pasted from the clipboard"));
const wxMetaFile& mf = data.GetMetafile();
// TODO: show it somewhere
wxLogMessage(_T("Metafile %dx%d pasted from the clipboard"),
mf.GetWidth(), mf.GetHeight());
ShowMetaFile(mf);
}
}
@@ -1527,7 +1624,6 @@ void DnDShapeFrame::OnCopyShape(wxCommandEvent& event)
{
if ( m_shape )
{
#if 1
wxClipboardLocker clipLocker;
if ( !clipLocker )
{
@@ -1537,22 +1633,6 @@ 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 +1719,20 @@ 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 +1756,40 @@ 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();
}
#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