/* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % % % % % Read/Write Windows Clipboard. % % % % Software Design % % Leonard Rosenthol % % May 2002 % % % % % % Copyright 1999-2007 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(HasWINGDI32) # if defined(__CYGWIN__) # include # else /* All MinGW needs ... */ # include # endif #endif #include "magick/blob.h" #include "magick/blob-private.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(HasWINGDI32) static MagickBooleanType WriteCLIPBOARDImage(const ImageInfo *,Image *); #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(HasWINGDI32) static Image *ReadCLIPBOARDImage(const ImageInfo *image_info, ExceptionInfo *exception) { Image *image; long y; register long 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=AllocateImage(image_info); { HBITMAP bitmapH; HPALETTE hPal; OpenClipboard(NULL); bitmapH=GetClipboardData(CF_BITMAP); hPal = 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=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=image->columns; DIBinfo.bmiHeader.biHeight=(-1)*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 is needed */ SelectPalette(hDC, hPal, FALSE); RealizePalette(hDC); } /* bitblt from the memory to the DIB-based one */ BitBlt(hDC,0,0,image->columns,image->rows,hMemDC,0,0,SRCCOPY); /* finally copy the pixels! */ pBits=ppBits; for (y=0; y < (long) image->rows; y++) { q=SetImagePixels(image,0,y,image->columns,1); if (q == (PixelPacket *) NULL) break; for (x=0; x < (long) image->columns; x++) { q->red=ScaleCharToQuantum(pBits->rgbRed); q->green=ScaleCharToQuantum(pBits->rgbGreen); q->blue=ScaleCharToQuantum(pBits->rgbBlue); q->opacity=OpaqueOpacity; pBits++; q++; } if (SyncImagePixels(image) == MagickFalse) break; } DeleteDC(hDC); DeleteObject(hBitmap); } } CloseBlob(image); return(GetFirstImageInList(image)); } #endif /* HasWINGDI32 */ /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % 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: % % unsigned long RegisterCLIPBOARDImage(void) % */ ModuleExport unsigned long RegisterCLIPBOARDImage(void) { MagickInfo *entry; entry=SetMagickInfo("CLIPBOARD"); #if defined(HasWINGDI32) entry->decoder=(DecodeImageHandler *) ReadCLIPBOARDImage; entry->encoder=(EncodeImageHandler *) WriteCLIPBOARDImage; #endif entry->adjoin=MagickFalse; entry->description=ConstantString("The system clipboard"); entry->module=ConstantString("CLIPBOARD"); (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) % % A description of each parameter follows. % % o image_info: The image info. % % o image: The image. % */ #if defined(HasWINGDI32) 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=ImageToHBITMAP(image); SetClipboardData(CF_BITMAP,bitmapH); CloseClipboard(); } return(MagickTrue); } #endif /* HasWINGDI32 */