// Created: 04/01/98
// RCS-ID: $Id$
// Copyright: (c) Julian Smart and Markus Holzem
-// Licence: wxWindows license
+// Licence: wxWindows license
/////////////////////////////////////////////////////////////////////////////
+// ============================================================================
+// declarations
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// headers
+// ----------------------------------------------------------------------------
+
#ifdef __GNUG__
-#pragma implementation "bitmap.h"
+ #pragma implementation "bitmap.h"
#endif
// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"
#ifdef __BORLANDC__
-#pragma hdrstop
+ #pragma hdrstop
#endif
#ifndef WX_PRECOMP
-#include <stdio.h>
-#include "wx/setup.h"
-#include "wx/list.h"
-#include "wx/utils.h"
-#include "wx/app.h"
-#include "wx/palette.h"
-#include "wx/bitmap.h"
-#include "wx/icon.h"
+ #include <stdio.h>
+
+ #include "wx/list.h"
+ #include "wx/utils.h"
+ #include "wx/app.h"
+ #include "wx/palette.h"
+ #include "wx/dcmemory.h"
+ #include "wx/bitmap.h"
+ #include "wx/icon.h"
#endif
#include "wx/msw/private.h"
-#include "assert.h"
-
-#if USE_XPM_IN_MSW
-#define FOR_MSW 1
-#include "..\..\contrib\wxxpm\libxpm.34b\lib\xpm34.h"
-#endif
+#include "wx/log.h"
#include "wx/msw/dib.h"
+#include "wx/image.h"
+
+// missing from mingw32 header
+#ifndef CLR_INVALID
+ #define CLR_INVALID ((COLORREF)-1)
+#endif // no CLR_INVALID
+
+// ----------------------------------------------------------------------------
+// macros
+// ----------------------------------------------------------------------------
-#if !USE_SHARED_LIBRARIES
IMPLEMENT_DYNAMIC_CLASS(wxBitmap, wxGDIObject)
IMPLEMENT_DYNAMIC_CLASS(wxMask, wxObject)
-#endif
-wxBitmapRefData::wxBitmapRefData(void)
-{
- m_ok = FALSE;
- m_width = 0;
- m_height = 0;
- m_depth = 0;
- m_quality = 0;
- m_hBitmap = 0 ;
- m_selectedInto = NULL;
- m_numColors = 0;
- m_bitmapMask = NULL;
-}
-
-wxBitmapRefData::~wxBitmapRefData(void)
-{
- if (m_selectedInto)
- {
- char buf[200];
- sprintf(buf, "Bitmap was deleted without selecting out of wxMemoryDC %X.", (unsigned int) m_selectedInto);
- wxFatalError(buf);
- }
- if (m_hBitmap)
- {
- DeleteObject((HBITMAP) m_hBitmap);
- }
- m_hBitmap = 0 ;
-
- if (m_bitmapMask)
+IMPLEMENT_DYNAMIC_CLASS(wxBitmapHandler, wxObject)
+
+// ============================================================================
+// implementation
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// wxBitmapRefData
+// ----------------------------------------------------------------------------
+
+wxBitmapRefData::wxBitmapRefData()
+{
+ m_quality = 0;
+ m_selectedInto = NULL;
+ m_numColors = 0;
+ m_bitmapMask = NULL;
+ m_hBitmap = (WXHBITMAP) NULL;
+}
+
+void wxBitmapRefData::Free()
+{
+ wxASSERT_MSG( !m_selectedInto,
+ wxT("deleting bitmap still selected into wxMemoryDC") );
+
+ if ( m_hBitmap)
+ {
+ if ( !::DeleteObject((HBITMAP)m_hBitmap) )
+ {
+ wxLogLastError("DeleteObject(hbitmap)");
+ }
+ }
+
delete m_bitmapMask;
- m_bitmapMask = NULL;
+ m_bitmapMask = NULL;
}
-wxList wxBitmap::sm_handlers;
+// ----------------------------------------------------------------------------
+// wxBitmap creation
+// ----------------------------------------------------------------------------
-wxBitmap::wxBitmap(void)
+// this function should be called from all wxBitmap ctors
+void wxBitmap::Init()
{
- m_refData = NULL; // new wxBitmapRefData;
+ // m_refData = NULL; done in the base class ctor
- if ( wxTheBitmapList )
- wxTheBitmapList->AddBitmap(this);
+ if ( wxTheBitmapList )
+ wxTheBitmapList->AddBitmap(this);
}
-wxBitmap::~wxBitmap(void)
+#ifdef __WIN32__
+
+bool wxBitmap::CopyFromIconOrCursor(const wxGDIImage& icon)
{
- if (wxTheBitmapList)
- wxTheBitmapList->DeleteObject(this);
+ // it may be either HICON or HCURSOR
+ HICON hicon = (HICON)icon.GetHandle();
+
+ ICONINFO iconInfo;
+ if ( !::GetIconInfo(hicon, &iconInfo) )
+ {
+ wxLogLastError("GetIconInfo");
+
+ return FALSE;
+ }
+
+ wxBitmapRefData *refData = new wxBitmapRefData;
+ m_refData = refData;
+
+ int w = icon.GetWidth(),
+ h = icon.GetHeight();
+
+ refData->m_width = w;
+ refData->m_height = h;
+ refData->m_depth = wxDisplayDepth();
+
+ refData->m_hBitmap = (WXHBITMAP)iconInfo.hbmColor;
+
+ // the mask returned by GetIconInfo() is inversed compared to the usual
+ // wxWin convention
+ refData->m_bitmapMask = new wxMask((WXHBITMAP)
+ wxInvertMask(iconInfo.hbmMask, w, h));
+
+#if WXWIN_COMPATIBILITY_2
+ refData->m_ok = TRUE;
+#endif // WXWIN_COMPATIBILITY_2
+
+ return TRUE;
}
-bool wxBitmap::FreeResource(bool force)
+#endif // Win32
+
+bool wxBitmap::CopyFromCursor(const wxCursor& cursor)
{
- if ( !M_BITMAPDATA )
- return FALSE;
+ UnRef();
+
+ if ( !cursor.Ok() )
+ return FALSE;
+
+#ifdef __WIN16__
+ wxFAIL_MSG( _T("don't know how to convert cursor to bitmap") );
+
+ return FALSE;
+#else
+ return CopyFromIconOrCursor(cursor);
+#endif // Win16
+}
+
+bool wxBitmap::CopyFromIcon(const wxIcon& icon)
+{
+ UnRef();
+
+ if ( !icon.Ok() )
+ return FALSE;
+
+ // GetIconInfo() doesn't exist under Win16 and I don't know any other way
+ // to create a bitmap from icon there - but using this way we won't have
+ // the mask (FIXME)
+#ifdef __WIN16__
+ int width = icon.GetWidth(),
+ height = icon.GetHeight();
+
+ // copy the icon to the bitmap
+ ScreenHDC hdcScreen;
+ HDC hdc = ::CreateCompatibleDC(hdcScreen);
+ HBITMAP hbitmap = ::CreateCompatibleBitmap(hdcScreen, width, height);
+ HBITMAP hbmpOld = (HBITMAP)::SelectObject(hdc, hbitmap);
+
+ ::DrawIcon(hdc, 0, 0, GetHiconOf(icon));
+
+ ::SelectObject(hdc, hbmpOld);
+ ::DeleteDC(hdc);
+
+ wxBitmapRefData *refData = new wxBitmapRefData;
+ m_refData = refData;
- if (M_BITMAPDATA->m_selectedInto)
- {
- char buf[200];
- sprintf(buf, "Bitmap %X was deleted without selecting out of wxMemoryDC %X.", (unsigned int) this, (unsigned int) M_BITMAPDATA->m_selectedInto);
- wxFatalError(buf);
- }
- if (M_BITMAPDATA->m_hBitmap)
- {
- DeleteObject((HBITMAP) M_BITMAPDATA->m_hBitmap);
- }
- M_BITMAPDATA->m_hBitmap = 0 ;
+ refData->m_width = width;
+ refData->m_height = height;
+ refData->m_depth = wxDisplayDepth();
-/*
- if (M_BITMAPDATA->m_bitmapPalette)
- delete M_BITMAPDATA->m_bitmapPalette;
+ refData->m_hBitmap = (WXHBITMAP)hbitmap;
- M_BITMAPDATA->m_bitmapPalette = NULL ;
-*/
+#if WXWIN_COMPATIBILITY_2
+ refData->m_ok = TRUE;
+#endif // WXWIN_COMPATIBILITY_2
- return TRUE;
+ return TRUE;
+#else // Win32
+ return CopyFromIconOrCursor(icon);
+#endif // Win16/Win32
}
+wxBitmap::~wxBitmap()
+{
+ if (wxTheBitmapList)
+ wxTheBitmapList->DeleteObject(this);
+}
-wxBitmap::wxBitmap(const char bits[], const int the_width, const int the_height, const int no_bits)
+wxBitmap::wxBitmap(const char bits[], int width, int height, int depth)
{
- m_refData = new wxBitmapRefData;
+ Init();
- M_BITMAPDATA->m_width = the_width ;
- M_BITMAPDATA->m_height = the_height ;
- M_BITMAPDATA->m_depth = no_bits ;
- M_BITMAPDATA->m_numColors = 0;
+ wxBitmapRefData *refData = new wxBitmapRefData;
+ m_refData = refData;
- M_BITMAPDATA->m_hBitmap = (WXHBITMAP) CreateBitmap(the_width, the_height, no_bits, 1, bits);
+ refData->m_width = width;
+ refData->m_height = height;
+ refData->m_depth = depth;
+ refData->m_numColors = 0;
+ refData->m_selectedInto = NULL;
- if (M_BITMAPDATA->m_hBitmap)
- M_BITMAPDATA->m_ok = TRUE;
- else
- M_BITMAPDATA->m_ok = FALSE;
+ char *data;
+ if ( depth == 1 )
+ {
+ // we assume that it is in XBM format which is not quite the same as
+ // the format CreateBitmap() wants because the order of bytes in the
+ // line is inversed!
+ static const size_t bytesPerLine = (width + 7) / 8;
+ static const size_t padding = bytesPerLine % 2;
+ static const size_t len = height * ( padding + bytesPerLine );
+ data = (char *)malloc(len);
+ const char *src = bits;
+ char *dst = data;
+
+ for ( int rows = 0; rows < height; rows++ )
+ {
+ for ( size_t cols = 0; cols < bytesPerLine; cols++ )
+ {
+ unsigned char val = *src++;
+ unsigned char reversed = 0;
+
+ for ( int bits = 0; bits < 8; bits++)
+ {
+ reversed <<= 1;
+ reversed |= (val & 0x01);
+ val >>= 1;
+ }
+ *dst++ = reversed;
+ }
+
+ if ( padding )
+ *dst++ = 0;
+ }
+ }
+ else
+ {
+ // bits should already be in Windows standard format
+ data = (char *)bits; // const_cast is harmless
+ }
- M_BITMAPDATA->m_selectedInto = NULL;
+ HBITMAP hbmp = ::CreateBitmap(width, height, 1, depth, data);
+ if ( !hbmp )
+ {
+ wxLogLastError("CreateBitmap");
+ }
- if ( wxTheBitmapList )
- wxTheBitmapList->AddBitmap(this);
+ if ( data != bits )
+ {
+ free(data);
+ }
+
+ SetHBITMAP((WXHBITMAP)hbmp);
}
-wxBitmap::wxBitmap(const int w, const int h, const int d)
+// Create from XPM data
+bool wxBitmap::CreateFromXpm(const char **data)
{
- (void)Create(w, h, d);
+ Init();
- if ( wxTheBitmapList )
- wxTheBitmapList->AddBitmap(this);
+ return Create((void *)data, wxBITMAP_TYPE_XPM_DATA, 0, 0, 0);
}
-wxBitmap::wxBitmap(void *data, const long type, const int width, const int height, const int depth)
+wxBitmap::wxBitmap(int w, int h, int d)
{
- (void) Create(data, type, width, height, depth);
+ Init();
- if ( wxTheBitmapList )
- wxTheBitmapList->AddBitmap(this);
+ (void)Create(w, h, d);
}
-wxBitmap::wxBitmap(const wxString& filename, const long type)
+wxBitmap::wxBitmap(void *data, long type, int width, int height, int depth)
{
- LoadFile(filename, (int)type);
+ Init();
- if ( wxTheBitmapList )
- wxTheBitmapList->AddBitmap(this);
+ (void)Create(data, type, width, height, depth);
}
-#if USE_XPM_IN_MSW
-// Create from data
-wxBitmap::wxBitmap(const char **data, wxItem *WXUNUSED(anItem))
+wxBitmap::wxBitmap(const wxString& filename, long type)
{
- (void) Create((void *)data, wxBITMAP_TYPE_XPM_DATA, 0, 0, 0);
+ Init();
+
+ LoadFile(filename, (int)type);
}
-#endif
-bool wxBitmap::Create(const int w, const int h, const int d)
+bool wxBitmap::Create(int w, int h, int d)
{
- UnRef();
+ UnRef();
- m_refData = new wxBitmapRefData;
+ m_refData = new wxBitmapRefData;
- M_BITMAPDATA->m_width = w;
- M_BITMAPDATA->m_height = h;
- M_BITMAPDATA->m_depth = d;
+ GetBitmapData()->m_width = w;
+ GetBitmapData()->m_height = h;
+ GetBitmapData()->m_depth = d;
- if (d > 0)
- {
- M_BITMAPDATA->m_hBitmap = (WXHBITMAP) CreateBitmap(w, h, d, 1, NULL);
- }
- else
- {
- HDC dc = GetDC(NULL);
- M_BITMAPDATA->m_hBitmap = (WXHBITMAP) CreateCompatibleBitmap(dc, w, h);
- ReleaseDC(NULL, dc);
- M_BITMAPDATA->m_depth = wxDisplayDepth();
- }
- if (M_BITMAPDATA->m_hBitmap)
- M_BITMAPDATA->m_ok = TRUE;
- else
- M_BITMAPDATA->m_ok = FALSE;
- return M_BITMAPDATA->m_ok;
-}
+ HBITMAP hbmp;
-bool wxBitmap::LoadFile(const wxString& filename, const long type)
-{
- UnRef();
+ if ( d > 0 )
+ {
+ hbmp = ::CreateBitmap(w, h, 1, d, NULL);
+ if ( !hbmp )
+ {
+ wxLogLastError("CreateBitmap");
+ }
+ }
+ else
+ {
+ ScreenHDC dc;
+ hbmp = ::CreateCompatibleBitmap(dc, w, h);
+ if ( !hbmp )
+ {
+ wxLogLastError("CreateCompatibleBitmap");
+ }
+
+ GetBitmapData()->m_depth = wxDisplayDepth();
+ }
- m_refData = new wxBitmapRefData;
+ SetHBITMAP((WXHBITMAP)hbmp);
- wxBitmapHandler *handler = FindHandler(type);
+#if WXWIN_COMPATIBILITY_2
+ GetBitmapData()->m_ok = hbmp != 0;
+#endif // WXWIN_COMPATIBILITY_2
- if ( handler )
- return handler->LoadFile(this, filename, type, -1, -1);
- else
- return FALSE;
+ return Ok();
}
-bool wxBitmap::Create(void *data, const long type, const int width, const int height, const int depth)
+bool wxBitmap::LoadFile(const wxString& filename, long type)
{
- UnRef();
+ UnRef();
- m_refData = new wxBitmapRefData;
+ wxBitmapHandler *handler = wxDynamicCast(FindHandler(type), wxBitmapHandler);
- wxBitmapHandler *handler = FindHandler(type);
+ if ( handler )
+ {
+ m_refData = new wxBitmapRefData;
- if ( handler )
- return handler->Create(this, data, type, width, height, depth);
- else
- return FALSE;
-}
+ return handler->LoadFile(this, filename, type, -1, -1);
+ }
+ else
+ {
+ wxImage image;
+ if ( !image.LoadFile( filename, type ) || !image.Ok() )
+ return FALSE;
-bool wxBitmap::SaveFile(const wxString& filename, const int type, const wxPalette *palette)
-{
- wxBitmapHandler *handler = FindHandler(type);
+ *this = image.ConvertToBitmap();
- if ( handler )
- return handler->SaveFile(this, filename, type, palette);
- else
- return FALSE;
+ return TRUE;
+ }
}
-void wxBitmap::SetWidth(int w)
+bool wxBitmap::Create(void *data, long type, int width, int height, int depth)
{
- if (!M_BITMAPDATA)
- m_refData = new wxBitmapRefData;
+ UnRef();
+
+ wxBitmapHandler *handler = wxDynamicCast(FindHandler(type), wxBitmapHandler);
+
+ if ( !handler )
+ {
+ wxLogDebug(wxT("Failed to create bitmap: no bitmap handler for "
+ "type %d defined."), type);
+
+ return FALSE;
+ }
+
+ m_refData = new wxBitmapRefData;
- M_BITMAPDATA->m_width = w;
+ return handler->Create(this, data, type, width, height, depth);
}
-void wxBitmap::SetHeight(int h)
+bool wxBitmap::SaveFile(const wxString& filename, int type, const wxPalette *palette)
{
- if (!M_BITMAPDATA)
- m_refData = new wxBitmapRefData;
+ wxBitmapHandler *handler = wxDynamicCast(FindHandler(type), wxBitmapHandler);
- M_BITMAPDATA->m_height = h;
+ if ( handler )
+ {
+ return handler->SaveFile(this, filename, type, palette);
+ }
+ else
+ {
+ // FIXME what about palette? shouldn't we use it?
+ wxImage image( *this );
+ if (!image.Ok())
+ return FALSE;
+
+ return image.SaveFile( filename, type );
+ }
}
-void wxBitmap::SetDepth(int d)
+// ----------------------------------------------------------------------------
+// sub bitmap extraction
+// ----------------------------------------------------------------------------
+
+wxBitmap wxBitmap::GetSubBitmap( const wxRect& rect) const
{
- if (!M_BITMAPDATA)
- m_refData = new wxBitmapRefData;
+ wxCHECK_MSG( Ok() &&
+ (rect.x >= 0) && (rect.y >= 0) &&
+ (rect.x+rect.width <= GetWidth()) &&
+ (rect.y+rect.height <= GetHeight()),
+ wxNullBitmap, wxT("Invalid bitmap or bitmap region") );
+
+ wxBitmap ret( rect.width, rect.height, GetDepth() );
+ wxASSERT_MSG( ret.Ok(), wxT("GetSubBitmap error") );
+
+ // copy bitmap data
+ HDC dcSrc = ::CreateCompatibleDC(NULL);
+ HDC dcDst = ::CreateCompatibleDC(NULL);
+ SelectObject(dcSrc, (HBITMAP) GetHBITMAP());
+ SelectObject(dcDst, (HBITMAP) ret.GetHBITMAP());
+ BitBlt(dcDst, 0, 0, rect.width, rect.height, dcSrc, rect.x, rect.y, SRCCOPY);
+
+ // copy mask if there is one
+ if (GetMask())
+ {
+ HBITMAP hbmpMask = ::CreateBitmap(rect.width, rect.height, 1, 1, 0);
+
+ SelectObject(dcSrc, (HBITMAP) GetMask()->GetMaskBitmap());
+ SelectObject(dcDst, (HBITMAP) hbmpMask);
+ BitBlt(dcDst, 0, 0, rect.width, rect.height, dcSrc, rect.x, rect.y, SRCCOPY);
- M_BITMAPDATA->m_depth = d;
+ wxMask *mask = new wxMask((WXHBITMAP) hbmpMask);
+ ret.SetMask(mask);
+ }
+
+ SelectObject(dcDst, NULL);
+ SelectObject(dcSrc, NULL);
+ DeleteDC(dcDst);
+ DeleteDC(dcSrc);
+
+ return ret;
}
+// ----------------------------------------------------------------------------
+// wxBitmap accessors
+// ----------------------------------------------------------------------------
+
void wxBitmap::SetQuality(int q)
{
- if (!M_BITMAPDATA)
- m_refData = new wxBitmapRefData;
+ EnsureHasData();
- M_BITMAPDATA->m_quality = q;
+ GetBitmapData()->m_quality = q;
}
+#if WXWIN_COMPATIBILITY_2
void wxBitmap::SetOk(bool isOk)
{
- if (!M_BITMAPDATA)
- m_refData = new wxBitmapRefData;
+ EnsureHasData();
- M_BITMAPDATA->m_ok = isOk;
+ GetBitmapData()->m_ok = isOk;
}
+#endif // WXWIN_COMPATIBILITY_2
void wxBitmap::SetPalette(const wxPalette& palette)
{
- if (!M_BITMAPDATA)
- m_refData = new wxBitmapRefData;
+ EnsureHasData();
- M_BITMAPDATA->m_bitmapPalette = palette ;
+ GetBitmapData()->m_bitmapPalette = palette;
}
void wxBitmap::SetMask(wxMask *mask)
{
- if (!M_BITMAPDATA)
- m_refData = new wxBitmapRefData;
+ EnsureHasData();
- M_BITMAPDATA->m_bitmapMask = mask ;
+ GetBitmapData()->m_bitmapMask = mask;
}
-void wxBitmap::SetHBITMAP(WXHBITMAP bmp)
+// Creates a bitmap that matches the device context, from
+// an arbitray bitmap. At present, the original bitmap must have an
+// associated palette. TODO: use a default palette if no palette exists.
+// Contributed by Frederic Villeneuve <frederic.villeneuve@natinst.com>
+wxBitmap wxBitmap::GetBitmapForDC(wxDC& dc) const
{
- if (!M_BITMAPDATA)
- m_refData = new wxBitmapRefData;
+ wxMemoryDC memDC;
+ wxBitmap tmpBitmap(GetWidth(), GetHeight(), dc.GetDepth());
+ HPALETTE hPal = (HPALETTE) NULL;
+ LPBITMAPINFO lpDib;
+ void *lpBits = (void*) NULL;
- M_BITMAPDATA->m_hBitmap = bmp;
-}
+ if( GetPalette() && GetPalette()->Ok() )
+ {
+ tmpBitmap.SetPalette(*GetPalette());
+ memDC.SelectObject(tmpBitmap);
+ memDC.SetPalette(*GetPalette());
+ hPal = (HPALETTE)GetPalette()->GetHPALETTE();
+ }
+ else
+ {
+ hPal = (HPALETTE) ::GetStockObject(DEFAULT_PALETTE);
+ wxPalette palette;
+ palette.SetHPALETTE( (WXHPALETTE)hPal );
+ tmpBitmap.SetPalette( palette );
+ memDC.SelectObject(tmpBitmap);
+ memDC.SetPalette( palette );
+ }
-void wxBitmap::AddHandler(wxBitmapHandler *handler)
-{
- sm_handlers.Append(handler);
-}
+ // set the height negative because in a DIB the order of the lines is
+ // reversed
+ if ( !wxCreateDIB(GetWidth(), -GetHeight(), GetDepth(), hPal, &lpDib) )
+ {
+ return wxNullBitmap;
+ }
-void wxBitmap::InsertHandler(wxBitmapHandler *handler)
-{
- sm_handlers.Insert(handler);
-}
+ lpBits = malloc(lpDib->bmiHeader.biSizeImage);
-bool wxBitmap::RemoveHandler(const wxString& name)
-{
- wxBitmapHandler *handler = FindHandler(name);
- if ( handler )
- {
- sm_handlers.DeleteObject(handler);
- return TRUE;
- }
- else
- return FALSE;
-}
+ ::GetBitmapBits(GetHbitmap(), lpDib->bmiHeader.biSizeImage, lpBits);
-wxBitmapHandler *wxBitmap::FindHandler(const wxString& name)
-{
- wxNode *node = sm_handlers.First();
- while ( node )
- {
- wxBitmapHandler *handler = (wxBitmapHandler *)node->Data();
- if ( handler->GetName() == name )
- return handler;
- node = node->Next();
- }
- return NULL;
-}
+ ::SetDIBitsToDevice(GetHdcOf(memDC), 0, 0,
+ GetWidth(), GetHeight(),
+ 0, 0, 0, GetHeight(),
+ lpBits, lpDib, DIB_RGB_COLORS);
-wxBitmapHandler *wxBitmap::FindHandler(const wxString& extension, long bitmapType)
-{
- wxNode *node = sm_handlers.First();
- while ( node )
- {
- wxBitmapHandler *handler = (wxBitmapHandler *)node->Data();
- if ( handler->GetExtension() == extension &&
- (bitmapType == -1 || handler->GetType() == bitmapType) )
- return handler;
- node = node->Next();
- }
- return NULL;
-}
+ free(lpBits);
-wxBitmapHandler *wxBitmap::FindHandler(long bitmapType)
-{
- wxNode *node = sm_handlers.First();
- while ( node )
- {
- wxBitmapHandler *handler = (wxBitmapHandler *)node->Data();
- if (handler->GetType() == bitmapType)
- return handler;
- node = node->Next();
- }
- return NULL;
+ wxFreeDIB(lpDib);
+
+ return tmpBitmap;
}
-/*
- * wxMask
- */
+// ----------------------------------------------------------------------------
+// wxMask
+// ----------------------------------------------------------------------------
-wxMask::wxMask(void)
+wxMask::wxMask()
{
m_maskBitmap = 0;
}
wxMask::wxMask(const wxBitmap& bitmap, const wxColour& colour)
{
m_maskBitmap = 0;
- Create(bitmap, colour);
+ Create(bitmap, colour);
}
// Construct a mask from a bitmap and a palette index indicating
// the transparent area
-wxMask::wxMask(const wxBitmap& bitmap, const int paletteIndex)
+wxMask::wxMask(const wxBitmap& bitmap, int paletteIndex)
{
m_maskBitmap = 0;
- Create(bitmap, paletteIndex);
+ Create(bitmap, paletteIndex);
}
// Construct a mask from a mono bitmap (copies the bitmap).
wxMask::wxMask(const wxBitmap& bitmap)
{
m_maskBitmap = 0;
- Create(bitmap);
+ Create(bitmap);
}
-wxMask::~wxMask(void)
+wxMask::~wxMask()
{
if ( m_maskBitmap )
::DeleteObject((HBITMAP) m_maskBitmap);
// Create a mask from a mono bitmap (copies the bitmap).
bool wxMask::Create(const wxBitmap& bitmap)
{
+ wxCHECK_MSG( bitmap.Ok() && bitmap.GetDepth() == 1, FALSE,
+ _T("can't create mask from invalid or not monochrome bitmap") );
+
if ( m_maskBitmap )
- {
- ::DeleteObject((HBITMAP) m_maskBitmap);
- m_maskBitmap = 0;
- }
- if (!bitmap.Ok() || bitmap.GetDepth() != 1)
- {
- return FALSE;
- }
- m_maskBitmap = (WXHBITMAP) CreateBitmap(
- bitmap.GetWidth(),
- bitmap.GetHeight(),
- 1, 1, 0
- );
- HDC srcDC = CreateCompatibleDC(0);
- SelectObject(srcDC, (HBITMAP) bitmap.GetHBITMAP());
- HDC destDC = CreateCompatibleDC(0);
- SelectObject(destDC, (HBITMAP) m_maskBitmap);
- BitBlt(destDC, 0, 0, bitmap.GetWidth(), bitmap.GetHeight(), srcDC, 0, 0, SRCCOPY);
- SelectObject(srcDC, 0);
- DeleteDC(srcDC);
- SelectObject(destDC, 0);
- DeleteDC(destDC);
- return TRUE;
+ {
+ ::DeleteObject((HBITMAP) m_maskBitmap);
+ m_maskBitmap = 0;
+ }
+
+ m_maskBitmap = (WXHBITMAP) CreateBitmap(
+ bitmap.GetWidth(),
+ bitmap.GetHeight(),
+ 1, 1, 0
+ );
+ HDC srcDC = CreateCompatibleDC(0);
+ SelectObject(srcDC, (HBITMAP) bitmap.GetHBITMAP());
+ HDC destDC = CreateCompatibleDC(0);
+ SelectObject(destDC, (HBITMAP) m_maskBitmap);
+ BitBlt(destDC, 0, 0, bitmap.GetWidth(), bitmap.GetHeight(), srcDC, 0, 0, SRCCOPY);
+ SelectObject(srcDC, 0);
+ DeleteDC(srcDC);
+ SelectObject(destDC, 0);
+ DeleteDC(destDC);
+ return TRUE;
}
// Create a mask from a bitmap and a palette index indicating
// the transparent area
-bool wxMask::Create(const wxBitmap& bitmap, const int paletteIndex)
+bool wxMask::Create(const wxBitmap& bitmap, int paletteIndex)
{
if ( m_maskBitmap )
- {
- ::DeleteObject((HBITMAP) m_maskBitmap);
- m_maskBitmap = 0;
- }
- if (bitmap.Ok() && bitmap.GetPalette()->Ok())
- {
- unsigned char red, green, blue;
- if (bitmap.GetPalette()->GetRGB(paletteIndex, &red, &green, &blue))
- {
- wxColour transparentColour(red, green, blue);
- return Create(bitmap, transparentColour);
- }
- }
- return FALSE;
+ {
+ ::DeleteObject((HBITMAP) m_maskBitmap);
+ m_maskBitmap = 0;
+ }
+ if (bitmap.Ok() && bitmap.GetPalette()->Ok())
+ {
+ unsigned char red, green, blue;
+ if (bitmap.GetPalette()->GetRGB(paletteIndex, &red, &green, &blue))
+ {
+ wxColour transparentColour(red, green, blue);
+ return Create(bitmap, transparentColour);
+ }
+ }
+ return FALSE;
}
// Create a mask from a bitmap and a colour indicating
// the transparent area
bool wxMask::Create(const wxBitmap& bitmap, const wxColour& colour)
{
- if ( m_maskBitmap )
- {
- ::DeleteObject((HBITMAP) m_maskBitmap);
- m_maskBitmap = 0;
- }
- if (!bitmap.Ok())
- {
- return FALSE;
- }
-
- // scan the bitmap for the transparent colour and set
- // the corresponding pixels in the mask to BLACK and
- // the rest to WHITE
- COLORREF maskColour = RGB(colour.Red(), colour.Green(), colour.Blue());
- m_maskBitmap = (WXHBITMAP) ::CreateBitmap(
- bitmap.GetWidth(),
- bitmap.GetHeight(),
- 1, 1, 0
- );
- HDC srcDC = ::CreateCompatibleDC(0);
- ::SelectObject(srcDC, (HBITMAP) bitmap.GetHBITMAP());
- HDC destDC = ::CreateCompatibleDC(0);
- ::SelectObject(destDC, (HBITMAP) m_maskBitmap);
-
- // this is not very efficient, but I can't think
- // of a better way of doing it
- for (int w = 0; w < bitmap.GetWidth(); w++)
- {
- for (int h = 0; h < bitmap.GetHeight(); h++)
- {
- COLORREF col = GetPixel(srcDC, w, h);
- if (col == maskColour)
- {
- ::SetPixel(destDC, w, h, RGB(0, 0, 0));
- }
- else
- {
- ::SetPixel(destDC, w, h, RGB(255, 255, 255));
- }
- }
- }
- ::SelectObject(srcDC, 0);
- ::DeleteDC(srcDC);
- ::SelectObject(destDC, 0);
- ::DeleteDC(destDC);
- return TRUE;
-}
-
-/*
- * wxBitmapHandler
- */
+ wxCHECK_MSG( bitmap.Ok(), FALSE, _T("invalid bitmap in wxMask::Create") );
-IMPLEMENT_DYNAMIC_CLASS(wxBitmapHandler, wxObject)
+ if ( m_maskBitmap )
+ {
+ ::DeleteObject((HBITMAP) m_maskBitmap);
+ m_maskBitmap = 0;
+ }
-bool wxBitmapHandler::Create(wxBitmap *bitmap, void *data, const long type, const int width, const int height, const int depth)
-{
- return FALSE;
-}
+ int width = bitmap.GetWidth(),
+ height = bitmap.GetHeight();
-bool wxBitmapHandler::LoadFile(wxBitmap *bitmap, const wxString& name, const long type,
- int desiredWidth, int desiredHeight)
-{
- return FALSE;
-}
+ // scan the bitmap for the transparent colour and set the corresponding
+ // pixels in the mask to BLACK and the rest to WHITE
+ COLORREF maskColour = wxColourToRGB(colour);
+ m_maskBitmap = (WXHBITMAP)::CreateBitmap(width, height, 1, 1, 0);
-bool wxBitmapHandler::SaveFile(wxBitmap *bitmap, const wxString& name, const int type, const wxPalette *palette)
-{
- return FALSE;
-}
+ HDC srcDC = ::CreateCompatibleDC(NULL);
+ HDC destDC = ::CreateCompatibleDC(NULL);
+ if ( !srcDC || !destDC )
+ {
+ wxLogLastError("CreateCompatibleDC");
+ }
-/*
- * Standard handlers
- */
+ bool ok = TRUE;
-class WXDLLEXPORT wxBMPResourceHandler: public wxBitmapHandler
-{
- DECLARE_DYNAMIC_CLASS(wxBMPResourceHandler)
-public:
- inline wxBMPResourceHandler(void)
- {
- m_name = "Windows bitmap resource";
- m_extension = "";
- m_type = wxBITMAP_TYPE_BMP_RESOURCE;
- };
+ HGDIOBJ hbmpSrcOld = ::SelectObject(srcDC, GetHbitmapOf(bitmap));
+ if ( !hbmpSrcOld )
+ {
+ wxLogLastError("SelectObject");
- virtual bool LoadFile(wxBitmap *bitmap, const wxString& name, const long flags,
- int desiredWidth, int desiredHeight);
-};
-IMPLEMENT_DYNAMIC_CLASS(wxBMPResourceHandler, wxBitmapHandler)
+ ok = FALSE;
+ }
-bool wxBMPResourceHandler::LoadFile(wxBitmap *bitmap, const wxString& name, const long flags,
- int desiredWidth, int desiredHeight)
-{
- // TODO: load colourmap.
- M_BITMAPHANDLERDATA->m_hBitmap = (WXHBITMAP) ::LoadBitmap(wxGetInstance(), name);
- if (M_BITMAPHANDLERDATA->m_hBitmap)
+ HGDIOBJ hbmpDstOld = ::SelectObject(destDC, (HBITMAP)m_maskBitmap);
+ if ( !hbmpDstOld )
{
- M_BITMAPHANDLERDATA->m_ok = TRUE;
- BITMAP bm;
- GetObject((HBITMAP) M_BITMAPHANDLERDATA->m_hBitmap, sizeof(BITMAP), (LPSTR) &bm);
- M_BITMAPHANDLERDATA->m_width = bm.bmWidth;
- M_BITMAPHANDLERDATA->m_height = bm.bmHeight;
- M_BITMAPHANDLERDATA->m_depth = bm.bmPlanes;
- return TRUE;
+ wxLogLastError("SelectObject");
+
+ ok = FALSE;
}
- return FALSE;
-}
-
-class WXDLLEXPORT wxBMPFileHandler: public wxBitmapHandler
-{
- DECLARE_DYNAMIC_CLASS(wxBMPFileHandler)
-public:
- inline wxBMPFileHandler(void)
- {
- m_name = "Windows bitmap file";
- m_extension = "bmp";
- m_type = wxBITMAP_TYPE_BMP;
- };
-
- virtual bool LoadFile(wxBitmap *bitmap, const wxString& name, const long flags,
- int desiredWidth, int desiredHeight);
- virtual bool SaveFile(wxBitmap *bitmap, const wxString& name, const int type, const wxPalette *palette = NULL);
-};
-IMPLEMENT_DYNAMIC_CLASS(wxBMPFileHandler, wxBitmapHandler)
-
-bool wxBMPFileHandler::LoadFile(wxBitmap *bitmap, const wxString& name, const long flags,
- int desiredWidth, int desiredHeight)
-{
-#if USE_IMAGE_LOADING_IN_MSW
- wxPalette *palette = NULL;
- bool success = FALSE;
-/*
- if (type & wxBITMAP_DISCARD_COLOURMAP)
- success = wxLoadIntoBitmap(WXSTRINGCAST name, bitmap);
- else
-*/
- success = (wxLoadIntoBitmap(WXSTRINGCAST name, bitmap, &palette) != 0);
- if (!success && palette)
+
+ // this is not very efficient, but I can't think of a better way of doing
+ // it
+ for ( int w = 0; ok && (w < width); w++ )
{
- delete palette;
- palette = NULL;
+ for ( int h = 0; ok && (h < height); h++ )
+ {
+ COLORREF col = GetPixel(srcDC, w, h);
+ if ( col == CLR_INVALID )
+ {
+ wxLogLastError("GetPixel");
+
+ // doesn't make sense to continue
+ ok = FALSE;
+
+ break;
+ }
+
+ if ( col == maskColour )
+ {
+ ::SetPixel(destDC, w, h, RGB(0, 0, 0));
+ }
+ else
+ {
+ ::SetPixel(destDC, w, h, RGB(255, 255, 255));
+ }
+ }
}
- if (palette)
- M_BITMAPHANDLERDATA->m_bitmapPalette = *palette;
- return success;
-#else
- return FALSE;
-#endif
-}
-bool wxBMPFileHandler::SaveFile(wxBitmap *bitmap, const wxString& name, const int type, const wxPalette *pal)
-{
-#if USE_IMAGE_LOADING_IN_MSW
- wxPalette *actualPalette = (wxPalette *)pal;
- if (!actualPalette && (!M_BITMAPHANDLERDATA->m_bitmapPalette.IsNull()))
- actualPalette = & (M_BITMAPHANDLERDATA->m_bitmapPalette);
- return (wxSaveBitmap(WXSTRINGCAST name, bitmap, actualPalette) != 0);
-#else
- return FALSE;
-#endif
+ ::SelectObject(srcDC, hbmpSrcOld);
+ ::DeleteDC(srcDC);
+ ::SelectObject(destDC, hbmpDstOld);
+ ::DeleteDC(destDC);
+
+ return ok;
}
-class WXDLLEXPORT wxXPMFileHandler: public wxBitmapHandler
+// ----------------------------------------------------------------------------
+// wxBitmapHandler
+// ----------------------------------------------------------------------------
+
+bool wxBitmapHandler::Create(wxGDIImage *image,
+ void *data,
+ long flags,
+ int width, int height, int depth)
{
- DECLARE_DYNAMIC_CLASS(wxXPMFileHandler)
-public:
- inline wxXPMFileHandler(void)
- {
- m_name = "XPM bitmap file";
- m_extension = "xpm";
- m_type = wxBITMAP_TYPE_XPM;
- };
+ wxBitmap *bitmap = wxDynamicCast(image, wxBitmap);
- virtual bool LoadFile(wxBitmap *bitmap, const wxString& name, const long flags,
- int desiredWidth = -1, int desiredHeight = -1);
- virtual bool SaveFile(wxBitmap *bitmap, const wxString& name, const int type, const wxPalette *palette = NULL);
-};
-IMPLEMENT_DYNAMIC_CLASS(wxXPMFileHandler, wxBitmapHandler)
+ return bitmap ? Create(bitmap, data, width, height, depth) : FALSE;
+}
-bool wxXPMFileHandler::LoadFile(wxBitmap *bitmap, const wxString& name, const long flags,
- int desiredWidth, int desiredHeight)
+bool wxBitmapHandler::Load(wxGDIImage *image,
+ const wxString& name,
+ long flags,
+ int width, int height)
{
-#if USE_XPM_IN_MSW
- XImage *ximage;
- XpmAttributes xpmAttr;
- HDC dc;
+ wxBitmap *bitmap = wxDynamicCast(image, wxBitmap);
- M_BITMAPHANDLERDATA->m_ok = FALSE;
- dc = CreateCompatibleDC(NULL);
- if (dc)
- {
- xpmAttr.valuemask = XpmReturnPixels;
- int errorStatus = XpmReadFileToImage(&dc, WXSTRINGCAST name, &ximage, (XImage **) NULL, &xpmAttr);
- DeleteDC(dc);
- if (errorStatus == XpmSuccess)
- {
- M_BITMAPHANDLERDATA->m_hBitmap = (WXHBITMAP) ximage->bitmap;
-
- BITMAP bm;
- GetObject((HBITMAP) m_hBitmap, sizeof(bm), (LPSTR) & bm);
-
- M_BITMAPHANDLERDATA->m_width = (bm.bmWidth);
- M_BITMAPHANDLERDATA->m_height = (bm.bmHeight);
- M_BITMAPHANDLERDATA->m_depth = (bm.bmPlanes * bm.bmBitsPixel);
- M_BITMAPHANDLERDATA->m_numColors = xpmAttr.npixels;
- XpmFreeAttributes(&xpmAttr);
- XImageFree(ximage);
-
- M_BITMAPHANDLERDATA->m_ok = TRUE;
- return TRUE;
- }
- else
- {
- M_BITMAPHANDLERDATA->m_ok = FALSE;
- return FALSE;
- }
- }
-#else
- return FALSE;
-#endif
+ return bitmap ? LoadFile(bitmap, name, flags, width, height) : FALSE;
}
-bool wxXPMFileHandler::SaveFile(wxBitmap *bitmap, const wxString& name, const int type, const wxPalette *palette)
+bool wxBitmapHandler::Save(wxGDIImage *image,
+ const wxString& name,
+ int type)
{
-#if USE_XPM_IN_MSW
- HDC dc = NULL;
-
- Visual *visual = NULL;
- XImage ximage;
+ wxBitmap *bitmap = wxDynamicCast(image, wxBitmap);
- dc = CreateCompatibleDC(NULL);
- if (dc)
- {
- if (SelectObject(dc, (HBITMAP) M_BITMAPHANDLERDATA->m_hBitmap))
- { /* for following SetPixel */
- /* fill the XImage struct 'by hand' */
- ximage.width = M_BITMAPHANDLERDATA->m_width; ximage.height = M_BITMAPHANDLERDATA->m_height;
- ximage.depth = M_BITMAPHANDLERDATA->m_depth; ximage.bitmap = M_BITMAPHANDLERDATA->m_hBitmap;
- int errorStatus = XpmWriteFileFromImage(&dc, WXSTRINGCAST name,
- &ximage, (XImage *) NULL, (XpmAttributes *) NULL);
+ return bitmap ? SaveFile(bitmap, name, type) : FALSE;
+}
- if (dc)
- DeleteDC(dc);
+bool wxBitmapHandler::Create(wxBitmap *WXUNUSED(bitmap),
+ void *WXUNUSED(data),
+ long WXUNUSED(type),
+ int WXUNUSED(width),
+ int WXUNUSED(height),
+ int WXUNUSED(depth))
+{
+ return FALSE;
+}
- if (errorStatus == XpmSuccess)
- return TRUE; /* no error */
- else
- return FALSE;
- } else return FALSE;
- } else return FALSE;
-#else
- return FALSE;
-#endif
+bool wxBitmapHandler::LoadFile(wxBitmap *WXUNUSED(bitmap),
+ const wxString& WXUNUSED(name),
+ long WXUNUSED(type),
+ int WXUNUSED(desiredWidth),
+ int WXUNUSED(desiredHeight))
+{
+ return FALSE;
}
-class WXDLLEXPORT wxXPMDataHandler: public wxBitmapHandler
+bool wxBitmapHandler::SaveFile(wxBitmap *WXUNUSED(bitmap),
+ const wxString& WXUNUSED(name),
+ int WXUNUSED(type),
+ const wxPalette *WXUNUSED(palette))
{
- DECLARE_DYNAMIC_CLASS(wxXPMDataHandler)
-public:
- inline wxXPMDataHandler(void)
- {
- m_name = "XPM bitmap data";
- m_extension = "xpm";
- m_type = wxBITMAP_TYPE_XPM_DATA;
- };
+ return FALSE;
+}
- virtual bool Create(wxBitmap *bitmap, void *data, const long flags, const int width, const int height, const int depth = 1);
-};
-IMPLEMENT_DYNAMIC_CLASS(wxXPMDataHandler, wxBitmapHandler)
+// ----------------------------------------------------------------------------
+// DIB functions
+// ----------------------------------------------------------------------------
-bool wxXPMDataHandler::Create(wxBitmap *bitmap, void *data, const long flags, const int width, const int height, const int depth)
+bool wxCreateDIB(long xSize, long ySize, long bitsPerPixel,
+ HPALETTE hPal, LPBITMAPINFO* lpDIBHeader)
{
-#if USE_XPM_IN_MSW
- XImage *ximage;
- int ErrorStatus;
- XpmAttributes xpmAttr;
- HDC dc;
+ unsigned long i, headerSize;
+ LPBITMAPINFO lpDIBheader = NULL;
+ LPPALETTEENTRY lpPe = NULL;
- M_BITMAPHANDLERDATA->m_ok = FALSE;
- M_BITMAPHANDLERDATA->m_numColors = 0;
- dc = CreateCompatibleDC(NULL); /* memory DC */
+ // Allocate space for a DIB header
+ headerSize = (sizeof(BITMAPINFOHEADER) + (256 * sizeof(PALETTEENTRY)));
+ lpDIBheader = (BITMAPINFO *) malloc(headerSize);
+ lpPe = (PALETTEENTRY *)((BYTE*)lpDIBheader + sizeof(BITMAPINFOHEADER));
- if (dc)
- {
- xpmAttr.valuemask = XpmReturnInfos; /* get infos back */
- ErrorStatus = XpmCreateImageFromData(&dc, (char **)data,
- &ximage, (XImage **) NULL, &xpmAttr);
+ GetPaletteEntries(hPal, 0, 256, lpPe);
- if (ErrorStatus == XpmSuccess)
- {
- /* ximage is malloced and contains bitmap and attributes */
- M_BITMAPHANDLERDATA->m_hBitmap = (WXHBITMAP) ximage->bitmap;
+ memset(lpDIBheader, 0x00, sizeof(BITMAPINFOHEADER));
- BITMAP bm;
- GetObject((HBITMAP) M_BITMAPHANDLERDATA->m_hBitmap, sizeof(bm), (LPSTR) & bm);
+ // Fill in the static parts of the DIB header
+ lpDIBheader->bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
+ lpDIBheader->bmiHeader.biWidth = xSize;
+ lpDIBheader->bmiHeader.biHeight = ySize;
+ lpDIBheader->bmiHeader.biPlanes = 1;
- M_BITMAPHANDLERDATA->m_width = (bm.bmWidth);
- M_BITMAPHANDLERDATA->m_height = (bm.bmHeight);
- M_BITMAPHANDLERDATA->m_depth = (bm.bmPlanes * bm.bmBitsPixel);
- M_BITMAPHANDLERDATA->m_numColors = xpmAttr.npixels;
- XpmFreeAttributes(&xpmAttr);
+ // this value must be 1, 4, 8 or 24 so PixelDepth can only be
+ lpDIBheader->bmiHeader.biBitCount = (WORD)(bitsPerPixel);
+ lpDIBheader->bmiHeader.biCompression = BI_RGB;
+ lpDIBheader->bmiHeader.biSizeImage = xSize * abs(ySize) * bitsPerPixel >> 3;
+ lpDIBheader->bmiHeader.biClrUsed = 256;
- XImageFree(ximage); // releases the malloc, but does not detroy
- // the bitmap
- M_BITMAPHANDLERDATA->m_ok = TRUE;
- DeleteDC(dc);
- } else
- {
- M_BITMAPHANDLERDATA->m_ok = FALSE;
-// XpmDebugError(ErrorStatus, NULL);
- DeleteDC(dc);
- return FALSE;
- }
- }
-#else
- return FALSE;
-#endif
+ // Initialize the DIB palette
+ for (i = 0; i < 256; i++) {
+ lpDIBheader->bmiColors[i].rgbReserved = lpPe[i].peFlags;
+ lpDIBheader->bmiColors[i].rgbRed = lpPe[i].peRed;
+ lpDIBheader->bmiColors[i].rgbGreen = lpPe[i].peGreen;
+ lpDIBheader->bmiColors[i].rgbBlue = lpPe[i].peBlue;
+ }
+
+ *lpDIBHeader = lpDIBheader;
+
+ return TRUE;
}
-void wxBitmap::CleanUpHandlers(void)
+void wxFreeDIB(LPBITMAPINFO lpDIBHeader)
{
- wxNode *node = sm_handlers.First();
- while ( node )
- {
- wxBitmapHandler *handler = (wxBitmapHandler *)node->Data();
- wxNode *next = node->Next();
- delete handler;
- delete node;
- node = next;
- }
+ free(lpDIBHeader);
}
-void wxBitmap::InitStandardHandlers(void)
+// ----------------------------------------------------------------------------
+// other helper functions
+// ----------------------------------------------------------------------------
+
+extern HBITMAP wxInvertMask(HBITMAP hbmpMask, int w, int h)
{
- AddHandler(new wxBMPResourceHandler);
- AddHandler(new wxBMPFileHandler);
- AddHandler(new wxXPMFileHandler);
- AddHandler(new wxXPMDataHandler);
- AddHandler(new wxICOResourceHandler);
- AddHandler(new wxICOFileHandler);
-}
+ wxCHECK_MSG( hbmpMask, 0, _T("invalid bitmap in wxInvertMask") );
+ // get width/height from the bitmap if not given
+ if ( !w || !h )
+ {
+ BITMAP bm;
+ ::GetObject(hbmpMask, sizeof(BITMAP), (LPVOID)&bm);
+ w = bm.bmWidth;
+ h = bm.bmHeight;
+ }
+
+ HDC hdcSrc = ::CreateCompatibleDC(NULL);
+ HDC hdcDst = ::CreateCompatibleDC(NULL);
+ if ( !hdcSrc || !hdcDst )
+ {
+ wxLogLastError("CreateCompatibleDC");
+ }
+
+ HBITMAP hbmpInvMask = ::CreateBitmap(w, h, 1, 1, 0);
+ if ( !hbmpInvMask )
+ {
+ wxLogLastError("CreateBitmap");
+ }
+
+ ::SelectObject(hdcSrc, hbmpMask);
+ ::SelectObject(hdcDst, hbmpInvMask);
+ if ( !::BitBlt(hdcDst, 0, 0, w, h,
+ hdcSrc, 0, 0,
+ NOTSRCCOPY) )
+ {
+ wxLogLastError("BitBlt");
+ }
+ ::DeleteDC(hdcSrc);
+ ::DeleteDC(hdcDst);
+ return hbmpInvMask;
+}
projects / wxWidgets.git / blobdiff