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DEFINITIONS
This source file includes following definitions.
- ReadCLIPBOARDImage
- RegisterCLIPBOARDImage
- UnregisterCLIPBOARDImage
- WriteCLIPBOARDImage
/*
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% %
% %
% %
% %
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% Read/Write Windows Clipboard. %
% %
% Software Design %
% Leonard Rosenthol %
% May 2002 %
% %
% %
% Copyright 1999-2011 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 %
% %
% http://www.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 "magick/studio.h"
#if defined(MAGICKCORE_WINGDI32_DELEGATE)
# if defined(__CYGWIN__)
# include <windows.h>
# else
/* All MinGW needs ... */
# include <wingdi.h>
# endif
#endif
#include "magick/blob.h"
#include "magick/blob-private.h"
#include "magick/cache.h"
#include "magick/exception.h"
#include "magick/exception-private.h"
#include "magick/image.h"
#include "magick/image-private.h"
#include "magick/list.h"
#include "magick/magick.h"
#include "magick/memory_.h"
#include "magick/nt-feature.h"
#include "magick/quantum-private.h"
#include "magick/static.h"
#include "magick/string_.h"
#include "magick/module.h"
/*
Forward declarations.
*/
#if defined(MAGICKCORE_WINGDI32_DELEGATE)
static MagickBooleanType
WriteCLIPBOARDImage(const ImageInfo *,Image *);
#endif
/*
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% R e a d C L I P B O A R D I m a g e %
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% 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)
{
Image
*image;
ssize_t
y;
register ssize_t
x;
register PixelPacket
*q;
assert(image_info != (const ImageInfo *) NULL);
assert(image_info->signature == MagickSignature);
if (image_info->debug != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
image_info->filename);
assert(exception != (ExceptionInfo *) NULL);
assert(exception->signature == MagickSignature);
image=AcquireImage(image_info);
{
HBITMAP
bitmapH;
HPALETTE
hPal;
OpenClipboard(NULL);
bitmapH=(HBITMAP) GetClipboardData(CF_BITMAP);
hPal=(HPALETTE) GetClipboardData(CF_PALETTE);
CloseClipboard();
if ( bitmapH == NULL )
ThrowReaderException(CoderError,"NoBitmapOnClipboard");
{
BITMAPINFO
DIBinfo;
BITMAP
bitmap;
HBITMAP
hBitmap,
hOldBitmap;
HDC
hDC,
hMemDC;
RGBQUAD
*pBits,
*ppBits;
/* create an offscreen DC for the source */
hMemDC=CreateCompatibleDC(NULL);
hOldBitmap=(HBITMAP) SelectObject(hMemDC,bitmapH);
GetObject(bitmapH,sizeof(BITMAP),(LPSTR) &bitmap);
if ((image->columns == 0) || (image->rows == 0))
{
image->rows=bitmap.bmHeight;
image->columns=bitmap.bmWidth;
}
/*
Initialize the bitmap header info.
*/
(void) ResetMagickMemory(&DIBinfo,0,sizeof(BITMAPINFO));
DIBinfo.bmiHeader.biSize=sizeof(BITMAPINFOHEADER);
DIBinfo.bmiHeader.biWidth=(LONG) image->columns;
DIBinfo.bmiHeader.biHeight=(-1)*(LONG) image->rows;
DIBinfo.bmiHeader.biPlanes=1;
DIBinfo.bmiHeader.biBitCount=32;
DIBinfo.bmiHeader.biCompression=BI_RGB;
hDC=GetDC(NULL);
if (hDC == 0)
ThrowReaderException(CoderError,"UnableToCreateADC");
hBitmap=CreateDIBSection(hDC,&DIBinfo,DIB_RGB_COLORS,(void **) &ppBits,
NULL,0);
ReleaseDC(NULL,hDC);
if (hBitmap == 0)
ThrowReaderException(CoderError,"UnableToCreateBitmap");
/* create an offscreen DC */
hDC=CreateCompatibleDC(NULL);
if (hDC == 0)
{
DeleteObject(hBitmap);
ThrowReaderException(CoderError,"UnableToCreateADC");
}
hOldBitmap=(HBITMAP) SelectObject(hDC,hBitmap);
if (hOldBitmap == 0)
{
DeleteDC(hDC);
DeleteObject(hBitmap);
ThrowReaderException(CoderError,"UnableToCreateBitmap");
}
if (hPal != NULL)
{
/* Kenichi Masuko says this needed */
SelectPalette(hDC, hPal, FALSE);
RealizePalette(hDC);
}
/* bitblt from the memory to the DIB-based one */
BitBlt(hDC,0,0,(int) image->columns,(int) image->rows,hMemDC,0,0,SRCCOPY);
/* finally copy the pixels! */
pBits=ppBits;
for (y=0; y < (ssize_t) image->rows; y++)
{
q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
if (q == (PixelPacket *) NULL)
break;
for (x=0; x < (ssize_t) image->columns; x++)
{
q->red=ScaleCharToQuantum(pBits->rgbRed);
q->green=ScaleCharToQuantum(pBits->rgbGreen);
q->blue=ScaleCharToQuantum(pBits->rgbBlue);
SetOpacityPixelComponent(q,OpaqueOpacity);
pBits++;
q++;
}
if (SyncAuthenticPixels(image,exception) == MagickFalse)
break;
}
DeleteDC(hDC);
DeleteObject(hBitmap);
}
}
(void) CloseBlob(image);
return(GetFirstImageInList(image));
}
#endif /* MAGICKCORE_WINGDI32_DELEGATE */
/*
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% R e g i s t e r C L I P B O A R D I m a g e %
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%
% 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=SetMagickInfo("CLIPBOARD");
#if defined(MAGICKCORE_WINGDI32_DELEGATE)
entry->decoder=(DecodeImageHandler *) ReadCLIPBOARDImage;
entry->encoder=(EncodeImageHandler *) WriteCLIPBOARDImage;
#endif
entry->adjoin=MagickFalse;
entry->format_type=ImplicitFormatType;
entry->description=ConstantString("The system clipboard");
entry->module=ConstantString("CLIPBOARD");
(void) RegisterMagickInfo(entry);
return(MagickImageCoderSignature);
}
/*
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% U n r e g i s t e r C L I P B O A R D I m a g e %
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% 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");
}
/*
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% W r i t e C L I P B O A R D I m a g e %
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% WriteCLIPBOARDImage() writes an image to the system clipboard.
%
% The format of the WriteCLIPBOARDImage method is:
%
% MagickBooleanType WriteCLIPBOARDImage(const ImageInfo *image_info,
% Image *image)
%
% A description of each parameter follows.
%
% o image_info: the image info.
%
% o image: The image.
%
*/
#if defined(MAGICKCORE_WINGDI32_DELEGATE)
static MagickBooleanType WriteCLIPBOARDImage(const ImageInfo *image_info,
Image *image)
{
/*
Allocate memory for pixels.
*/
assert(image_info != (const ImageInfo *) NULL);
assert(image_info->signature == MagickSignature);
assert(image != (Image *) NULL);
assert(image->signature == MagickSignature);
if (image->debug != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
{
HBITMAP
bitmapH;
OpenClipboard( NULL );
EmptyClipboard();
bitmapH=(HBITMAP) ImageToHBITMAP(image);
SetClipboardData(CF_BITMAP,bitmapH);
CloseClipboard();
}
return(MagickTrue);
}
#endif /* MAGICKCORE_WINGDI32_DELEGATE */