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1. more drag and drop and clipboard changes:

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a) OLE clipboard works fine
 b) wxBitmapDataObject now accepts DIBs (but doesn't give them back :-( )
 c) bugs in sample corrected
2. wxFatalExit() replaced with wxFAIL_MSG() in bitmap.cpp and dcmemory.cpp
3. wxFrame::ClientToScreen and ScreenToClient() replaced with DoXXX() - like
   this, they don't hide the base class versions


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@4039 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Vadim Zeitlin
1999-10-18 00:08:40 +00:00
parent 23d277e683
commit d59ceba572
9 changed files with 820 additions and 333 deletions
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57
include/wx/msw/ole/dataobj.h
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@@ -23,8 +23,12 @@ public:
typedef unsigned int NativeFormat;
wxDataFormat(NativeFormat format = wxDF_INVALID) { m_format = format; }
wxDataFormat(const wxChar *format) { SetId(format); }
wxDataFormat& operator=(NativeFormat format)
{ m_format = format; return *this; }
wxDataFormat& operator=(const wxDataFormat& format)
{ m_format = format.m_format; return *this; }
// defautl copy ctor/assignment operators ok
@@ -62,14 +66,11 @@ private:
// ----------------------------------------------------------------------------
// forward declarations
// ----------------------------------------------------------------------------
struct IDataObject;
// ----------------------------------------------------------------------------
// wxDataObject is a "smart" and polymorphic piece of data.
//
// TODO it's currently "read-only" from COM point of view, i.e. we don't
// support SetData. We don't support all advise functions neither (but
// it's easy to do if we really want them)
// ----------------------------------------------------------------------------
class WXDLLEXPORT wxDataObject
@@ -80,18 +81,26 @@ public:
virtual ~wxDataObject();
// pure virtuals to override
// get the best suited format for our data
// get the best suited format for rendering our data
virtual wxDataFormat GetPreferredFormat() const = 0;
// get the number of formats we support
virtual size_t GetFormatCount() const
// get the number of formats we support: it is understood that if we
// can accept data in some format, then we can render data in this
// format as well, but the contrary is not necessarily true. For the
// default value of the argument, all formats we support should be
// returned, but if outputOnlyToo == FALSE, then we should only return
// the formats which our SetData() understands
virtual size_t GetFormatCount(bool outputOnlyToo = TRUE) const
{ return 1; }
// return all formats in the provided array (of size GetFormatCount())
virtual void GetAllFormats(wxDataFormat *formats) const
virtual void GetAllFormats(wxDataFormat *formats,
bool outputOnlyToo = TRUE) const
{ formats[0] = GetPreferredFormat(); }
// get the (total) size of data for the given format
virtual size_t GetDataSize(const wxDataFormat& format) const = 0;
// copy raw data (in the specified format) to provided pointer
virtual void GetDataHere(const wxDataFormat& format, void *pBuf) const = 0;
virtual bool GetDataHere(const wxDataFormat& format, void *buf) const = 0;
// get data from the buffer (in the given format)
virtual bool SetData(const wxDataFormat& format, const void *buf) = 0;
// accessors
// retrieve IDataObject interface (for other OLE related classes)
@@ -105,6 +114,13 @@ public:
// format) -- now uses GetAllFormats()
virtual bool IsSupportedFormat(const wxDataFormat& format) const;
// implementation only from now on
// -------------------------------
// tell the object that it should be now owned by IDataObject - i.e. when
// it is deleted, it should delete us as well
void SetAutoDelete();
#ifdef __WXDEBUG__
// function to return symbolic name of clipboard format (for debug messages)
static const char *GetFormatName(wxDataFormat format);
@@ -133,8 +149,10 @@ public:
{ return format == wxDF_TEXT || format == wxDF_LOCALE; }
virtual size_t GetDataSize(const wxDataFormat& format) const
{ return m_strText.Len() + 1; } // +1 for trailing '\0'of course
virtual void GetDataHere(const wxDataFormat& format, void *pBuf) const
{ memcpy(pBuf, m_strText.c_str(), GetDataSize(format)); }
virtual bool GetDataHere(const wxDataFormat& format, void *buf) const
{ memcpy(buf, m_strText.c_str(), GetDataSize(format)); return TRUE; }
virtual bool SetData(const wxDataFormat& format, const void *buf)
{ m_strText = (const wxChar *)buf; return TRUE; }
// additional helpers
void SetText(const wxString& strText) { m_strText = strText; }
@@ -144,16 +162,10 @@ private:
wxString m_strText;
};
// ----------------------------------------------------------------------------
// TODO: wx{Bitmap|Metafile|...}DataObject
// ----------------------------------------------------------------------------
// ----------------------------------------------------------------------------
// wxBitmapDataObject is a specialization of wxDataObject for bitmap data
// ----------------------------------------------------------------------------
// TODO: implement OLE side of things. At present, it's just for clipboard
// use.
#include "wx/bitmap.h"
class WXDLLEXPORT wxBitmapDataObject : public wxDataObject
@@ -168,12 +180,13 @@ public:
const wxBitmap GetBitmap() const { return m_bitmap; }
// implement base class pure virtuals
virtual wxDataFormat GetPreferredFormat() const
{ return wxDF_BITMAP; }
virtual bool IsSupportedFormat(const wxDataFormat& format) const
{ return format == wxDF_BITMAP; }
virtual wxDataFormat GetPreferredFormat() const { return wxDF_BITMAP; }
virtual size_t GetFormatCount(bool outputOnlyToo = TRUE) const;
virtual void GetAllFormats(wxDataFormat *formats,
bool outputOnlyToo = TRUE) const;
virtual size_t GetDataSize(const wxDataFormat& format) const;
virtual void GetDataHere(const wxDataFormat& format, void *pBuf) const;
virtual bool GetDataHere(const wxDataFormat& format, void *buf) const;
virtual bool SetData(const wxDataFormat& format, const void *buf);
private:
wxBitmap m_bitmap;