/*
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% %
% %
% %
% CCCC L IIIII PPPP BBBB OOO AAA RRRR DDDD %
% C L I P P B B O O A A R R D D %
% C L I PPP BBBB O O AAAAA RRRR D D %
% C L I P B B O O A A R R D D %
% CCCC LLLLL IIIII P BBBB OOO A A R R DDDD %
% %
% %
% Read/Write Windows Clipboard. %
% %
% Software Design %
% Leonard Rosenthol %
% May 2002 %
% %
% %
% Copyright 1999-2019 ImageMagick Studio LLC, a non-profit organization %
% dedicated to making software imaging solutions freely available. %
% %
% You may not use this file except in compliance with the License. You may %
% obtain a copy of the License at %
% %
% https://imagemagick.org/script/license.php %
% %
% Unless required by applicable law or agreed to in writing, software %
% distributed under the License is distributed on an "AS IS" BASIS, %
% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. %
% See the License for the specific language governing permissions and %
% limitations under the License. %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%
*/
/*
Include declarations.
*/
#include "MagickCore/studio.h"
#if defined(MAGICKCORE_WINGDI32_DELEGATE)
# if defined(__CYGWIN__)
# include <windows.h>
# else
/* All MinGW needs ... */
# include "MagickCore/nt-base-private.h"
# include <wingdi.h>
# endif
#endif
#include "MagickCore/blob.h"
#include "MagickCore/blob-private.h"
#include "MagickCore/cache.h"
#include "MagickCore/exception.h"
#include "MagickCore/exception-private.h"
#include "MagickCore/image.h"
#include "MagickCore/image-private.h"
#include "MagickCore/list.h"
#include "MagickCore/magick.h"
#include "MagickCore/memory_.h"
#include "MagickCore/nt-feature.h"
#include "MagickCore/pixel-accessor.h"
#include "MagickCore/quantum-private.h"
#include "MagickCore/static.h"
#include "MagickCore/string_.h"
#include "MagickCore/module.h"
#define BMP_HEADER_SIZE 14
/*
Forward declarations.
*/
#if defined(MAGICKCORE_WINGDI32_DELEGATE)
static MagickBooleanType
WriteCLIPBOARDImage(const ImageInfo *,Image *,ExceptionInfo *);
#endif
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% R e a d C L I P B O A R D I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% ReadCLIPBOARDImage() reads an image from the system clipboard and returns
% it. It allocates the memory necessary for the new Image structure and
% returns a pointer to the new image.
%
% The format of the ReadCLIPBOARDImage method is:
%
% Image *ReadCLIPBOARDImage(const ImageInfo *image_info,
% ExceptionInfo exception)
%
% A description of each parameter follows:
%
% o image_info: the image info.
%
% o exception: return any errors or warnings in this structure.
%
*/
#if defined(MAGICKCORE_WINGDI32_DELEGATE)
static Image *ReadCLIPBOARDImage(const ImageInfo *image_info,
ExceptionInfo *exception)
{
unsigned char
*p;
HANDLE
clip_handle;
Image
*image;
ImageInfo
*read_info;
LPVOID
clip_mem;
MagickBooleanType
status;
register ssize_t
x;
register Quantum
*q;
size_t
clip_size,
total_size;
ssize_t
y;
unsigned int
offset;
void
*clip_data;
assert(image_info != (const ImageInfo *) NULL);
assert(image_info->signature == MagickCoreSignature);
if (image_info->debug != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
image_info->filename);
assert(exception != (ExceptionInfo *) NULL);
assert(exception->signature == MagickCoreSignature);
image=AcquireImage(image_info,exception);
if (!IsClipboardFormatAvailable(CF_BITMAP) &&
!IsClipboardFormatAvailable(CF_DIB) &&
!IsClipboardFormatAvailable(CF_DIBV5))
ThrowReaderException(CoderError,"NoBitmapOnClipboard");
if (!OpenClipboard(NULL))
ThrowReaderException(CoderError,"UnableToReadImageData");
clip_handle=GetClipboardData(CF_DIBV5);
if (!clip_handle)
clip_handle=GetClipboardData(CF_DIB);
if ((clip_handle == NULL) || (clip_handle == INVALID_HANDLE_VALUE))
{
CloseClipboard();
ThrowReaderException(CoderError,"UnableToReadImageData");
}
clip_size=(size_t) GlobalSize(clip_handle);
total_size=clip_size+BMP_HEADER_SIZE;
clip_data=AcquireMagickMemory(total_size);
if (clip_data == (void *) NULL)
{
CloseClipboard();
ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
}
clip_mem=GlobalLock(clip_handle);
if (clip_mem == (LPVOID) NULL)
{
CloseClipboard();
ThrowReaderException(CoderError,"UnableToReadImageData");
}
p=(unsigned char *) clip_data;
p+=BMP_HEADER_SIZE;
(void) memcpy(p,clip_mem,clip_size);
(void) GlobalUnlock(clip_mem);
(void) CloseClipboard();
memset(clip_data,0,BMP_HEADER_SIZE);
offset=((unsigned int) p[0])+BMP_HEADER_SIZE;
p-=BMP_HEADER_SIZE;
p[0]='B';
p[1]='M';
p[2]=(unsigned char) total_size;
p[3]=(unsigned char) (total_size >> 8);
p[4]=(unsigned char) (total_size >> 16);
p[5]=(unsigned char) (total_size >> 24);
p[10]=offset;
read_info=CloneImageInfo(image_info);
(void) CopyMagickString(read_info->magick,"BMP",MaxTextExtent);
image=BlobToImage(read_info,clip_data,total_size,exception);
read_info=DestroyImageInfo(read_info);
clip_data=RelinquishMagickMemory(clip_data);
return(image);
}
#endif /* MAGICKCORE_WINGDI32_DELEGATE */
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% R e g i s t e r C L I P B O A R D I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% RegisterCLIPBOARDImage() adds attributes for the clipboard "image format" to
% the list of supported formats. The attributes include the image format
% tag, a method to read and/or write the format, whether the format
% supports the saving of more than one frame to the same file or blob,
% whether the format supports native in-memory I/O, and a brief
% description of the format.
%
% The format of the RegisterCLIPBOARDImage method is:
%
% size_t RegisterCLIPBOARDImage(void)
%
*/
ModuleExport size_t RegisterCLIPBOARDImage(void)
{
MagickInfo
*entry;
entry=AcquireMagickInfo("CLIPBOARD","CLIPBOARD","The system clipboard");
#if defined(MAGICKCORE_WINGDI32_DELEGATE)
entry->decoder=(DecodeImageHandler *) ReadCLIPBOARDImage;
entry->encoder=(EncodeImageHandler *) WriteCLIPBOARDImage;
#endif
entry->flags^=CoderAdjoinFlag;
entry->format_type=ImplicitFormatType;
(void) RegisterMagickInfo(entry);
return(MagickImageCoderSignature);
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% U n r e g i s t e r C L I P B O A R D I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% UnregisterCLIPBOARDImage() removes format registrations made by the
% RGB module from the list of supported formats.
%
% The format of the UnregisterCLIPBOARDImage method is:
%
% UnregisterCLIPBOARDImage(void)
%
*/
ModuleExport void UnregisterCLIPBOARDImage(void)
{
(void) UnregisterMagickInfo("CLIPBOARD");
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% W r i t e C L I P B O A R D I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% WriteCLIPBOARDImage() writes an image to the system clipboard.
%
% The format of the WriteCLIPBOARDImage method is:
%
% MagickBooleanType WriteCLIPBOARDImage(const ImageInfo *image_info,
% Image *image,ExceptionInfo *exception)
%
% A description of each parameter follows.
%
% o image_info: the image info.
%
% o image: The image.
%
% o exception: return any errors or warnings in this structure.
%
*/
#if defined(MAGICKCORE_WINGDI32_DELEGATE)
static MagickBooleanType WriteCLIPBOARDImage(const ImageInfo *image_info,
Image *image,ExceptionInfo *exception)
{
HANDLE
clip_handle;
ImageInfo
*write_info;
LPVOID
clip_mem;
size_t
length;
unsigned char
*p;
void
*clip_data;
assert(image_info != (const ImageInfo *) NULL);
assert(image_info->signature == MagickCoreSignature);
assert(image != (Image *) NULL);
assert(image->signature == MagickCoreSignature);
if (image->debug != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
if (SetImageStorageClass(image,DirectClass,exception) == MagickFalse)
ThrowWriterException(CoderError,"UnableToWriteImageData");
write_info=CloneImageInfo(image_info);
if (image->alpha_trait == UndefinedPixelTrait)
(void) CopyMagickString(write_info->magick,"BMP3",MaxTextExtent);
else
(void) CopyMagickString(write_info->magick,"BMP",MaxTextExtent);
clip_data=ImageToBlob(write_info,image,&length,exception);
write_info=DestroyImageInfo(write_info);
if (clip_data == (void *) NULL)
ThrowWriterException(CoderError,"UnableToWriteImageData");
clip_handle=(HANDLE) GlobalAlloc(GMEM_MOVEABLE,length-BMP_HEADER_SIZE);
if (clip_handle == (HANDLE) NULL)
{
clip_data=RelinquishMagickMemory(clip_data);
ThrowWriterException(CoderError,"UnableToWriteImageData");
}
clip_mem=GlobalLock(clip_handle);
if (clip_handle == (LPVOID) NULL)
{
(void) GlobalFree((HGLOBAL) clip_handle);
clip_data=RelinquishMagickMemory(clip_data);
ThrowWriterException(CoderError,"UnableToWriteImageData");
}
p=(unsigned char *) clip_data;
p+=BMP_HEADER_SIZE;
(void) memcpy(clip_mem,p,length-BMP_HEADER_SIZE);
(void) GlobalUnlock(clip_mem);
clip_data=RelinquishMagickMemory(clip_data);
if (!OpenClipboard(NULL))
{
(void) GlobalFree((HGLOBAL) clip_handle);
ThrowWriterException(CoderError,"UnableToWriteImageData");
}
(void) EmptyClipboard();
if (image->alpha_trait == UndefinedPixelTrait)
SetClipboardData(CF_DIB,clip_handle);
else
SetClipboardData(CF_DIBV5,clip_handle);
(void) CloseClipboard();
return(MagickTrue);
}
#endif /* MAGICKCORE_WINGDI32_DELEGATE */