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demo of clipboard support for metafiles (which still doesn't work)

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@5284 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Vadim Zeitlin
2000-01-07 02:31:24 +00:00
parent 265b0c070b
commit 5a1c877f57
1 changed files with 158 additions and 15 deletions
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173
samples/dnd/dnd.cpp
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@@ -23,6 +23,12 @@
#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"
@@ -34,6 +40,10 @@
#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"
#endif
@@ -102,6 +112,10 @@ public:
void OnCopyBitmap(wxCommandEvent& event);
void OnPasteBitmap(wxCommandEvent& event);
#ifdef USE_METAFILES
void OnPasteMetafile(wxCommandEvent& event);
#endif // USE_METAFILES
void OnCopyFiles(wxCommandEvent& event);
void OnLeftDown(wxMouseEvent& event);
@@ -349,6 +363,9 @@ public:
// 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; }
@@ -365,6 +382,9 @@ public:
m_shape = (DnDShape *)NULL;
m_hasBitmap = FALSE;
#ifdef USE_METAFILES
m_hasMetaFile = FALSE;
#endif // Windows
return shape;
}
@@ -384,7 +404,11 @@ public:
if ( dir == Get )
{
// but the bitmap format(s) are only supported for output
nFormats += m_dataobj.GetFormatCount(dir);
nFormats += m_dobjBitmap.GetFormatCount(dir);
#ifdef USE_METAFILES
nFormats += m_dobjMetaFile.GetFormatCount(dir);
#endif // Windows
}
return nFormats;
@@ -395,7 +419,15 @@ public:
formats[0] = m_formatShape;
if ( dir == Get )
{
m_dataobj.GetAllFormats(&formats[1], dir);
// in Get direction we additionally support bitmaps and metafiles
// under Windows
m_dobjBitmap.GetAllFormats(&formats[1], dir);
#ifdef USE_METAFILES
// don't assume that m_dobjBitmap has only 1 format
m_dobjMetaFile.GetAllFormats(&formats[1 +
m_dobjBitmap.GetFormatCount(dir)], dir);
#endif // Windows
}
}
@@ -405,12 +437,21 @@ public:
{
return m_shape->GetDataSize();
}
#ifdef USE_METAFILES
else if ( format == wxDF_METAFILE )
{
if ( !m_hasMetaFile )
CreateMetaFile();
return m_dobjMetaFile.GetDataSize();
}
#endif // Windows
else
{
if ( !m_hasBitmap )
CreateBitmap();
return m_dataobj.GetDataSize();
return m_dobjBitmap.GetDataSize();
}
}
@@ -422,12 +463,21 @@ public:
return TRUE;
}
#ifdef USE_METAFILES
else if ( format == wxDF_METAFILE )
{
if ( !m_hasMetaFile )
CreateMetaFile();
return m_dobjMetaFile.GetDataHere(pBuf);
}
#endif // Windows
else
{
if ( !m_hasBitmap )
CreateBitmap();
return m_dataobj.GetDataHere(pBuf);
return m_dobjBitmap.GetDataHere(pBuf);
}
}
@@ -442,17 +492,29 @@ public:
// 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
};
@@ -543,8 +605,7 @@ public:
// 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); }
{ 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)
@@ -582,6 +643,7 @@ enum
Menu_Paste,
Menu_CopyBitmap,
Menu_PasteBitmap,
Menu_PasteMFile,
Menu_CopyFiles,
Menu_Shape_New = 500,
Menu_Shape_Edit,
@@ -602,6 +664,9 @@ BEGIN_EVENT_TABLE(DnDFrame, wxFrame)
EVT_MENU(Menu_Paste, DnDFrame::OnPaste)
EVT_MENU(Menu_CopyBitmap, DnDFrame::OnCopyBitmap)
EVT_MENU(Menu_PasteBitmap,DnDFrame::OnPasteBitmap)
#ifdef USE_METAFILES
EVT_MENU(Menu_PasteMFile, DnDFrame::OnPasteMetafile)
#endif // USE_METAFILES
EVT_MENU(Menu_CopyFiles, DnDFrame::OnCopyFiles)
EVT_UPDATE_UI(Menu_Paste, DnDFrame::OnUpdateUIPasteText)
@@ -676,7 +741,7 @@ bool DnDApp::OnInit()
// create the main frame window
DnDFrame *frame = new DnDFrame((wxFrame *) NULL,
"Drag-and-Drop/Clipboard wxWindows Sample",
10, 10, 450, 340);
10, 100, 650, 340);
// activate it
frame->Show(TRUE);
@@ -716,10 +781,14 @@ DnDFrame::DnDFrame(wxFrame *frame, char *title, int x, int y, int w, int h)
clip_menu->Append(Menu_Copy, "&Copy text\tCtrl+C");
clip_menu->Append(Menu_Paste, "&Paste text\tCtrl+V");
clip_menu->AppendSeparator();
clip_menu->Append(Menu_CopyBitmap, "&Copy bitmap\tAlt+C");
clip_menu->Append(Menu_PasteBitmap, "&Paste bitmap\tAlt+V");
clip_menu->Append(Menu_CopyBitmap, "Copy &bitmap\tAlt+C");
clip_menu->Append(Menu_PasteBitmap, "Paste b&itmap\tAlt+V");
#ifdef USE_METAFILES
clip_menu->AppendSeparator();
clip_menu->Append(Menu_CopyFiles, "&Copy files\tCtrl+F");
clip_menu->Append(Menu_PasteMFile, "Paste &metafile\tCtrl-M");
#endif // USE_METAFILES
clip_menu->AppendSeparator();
clip_menu->Append(Menu_CopyFiles, "Copy &files\tCtrl+F");
wxMenuBar *menu_bar = new wxMenuBar;
menu_bar->Append(file_menu, "&File");
@@ -1053,6 +1122,41 @@ void DnDFrame::OnPasteBitmap(wxCommandEvent& WXUNUSED(event))
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
{
wxLogMessage(_T("Metafile pasted from the clipboard"));
// TODO: show it somewhere
}
}
wxTheClipboard->Close();
}
#endif // USE_METAFILES
// ----------------------------------------------------------------------------
// file clipboard
// ----------------------------------------------------------------------------
@@ -1293,7 +1397,7 @@ DnDShapeFrame::DnDShapeFrame(wxFrame *parent)
menuShape->Append(Menu_Shape_New, "&New default shape\tCtrl-S");
menuShape->Append(Menu_Shape_Edit, "&Edit shape\tCtrl-E");
menuShape->AppendSeparator();
menuShape->Append(Menu_Shape_Clear, "&Clear shape\tDel");
menuShape->Append(Menu_Shape_Clear, "&Clear shape\tCtrl-L");
wxMenu *menuClipboard = new wxMenu;
menuClipboard->Append(Menu_ShapeClipboard_Copy, "&Copy\tCtrl-C");
@@ -1423,6 +1527,7 @@ void DnDShapeFrame::OnCopyShape(wxCommandEvent& event)
{
if ( m_shape )
{
#if 1
wxClipboardLocker clipLocker;
if ( !clipLocker )
{
@@ -1432,6 +1537,22 @@ 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
}
}
@@ -1514,6 +1635,28 @@ DnDShape *DnDShape::New(const void *buf)
// DnDShapeDataObject
// ----------------------------------------------------------------------------
#ifdef USE_METAFILES
void DnDShapeDataObject::CreateMetaFile() const
{
wxMetaFileDC dcMF;
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;
}
#endif // Windows
void DnDShapeDataObject::CreateBitmap() const
{
wxPoint pos = m_shape->GetPosition();
@@ -1529,7 +1672,7 @@ void DnDShapeDataObject::CreateBitmap() const
dc.SelectObject(wxNullBitmap);
DnDShapeDataObject *self = (DnDShapeDataObject *)this; // const_cast
self->m_dataobj.SetBitmap(bitmap);
self->m_dobjBitmap.SetBitmap(bitmap);
self->m_hasBitmap = TRUE;
}