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1 /*
2 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3 %                                                                             %
4 %                                                                             %
5 %                                                                             %
6 %        CCCC  L      IIIII  PPPP   BBBB    OOO    AAA   RRRR   DDDD          %
7 %       C      L        I    P   P  B   B  O   O  A   A  R   R  D   D         %
8 %       C      L        I    PPP    BBBB   O   O  AAAAA  RRRR   D   D         %
9 %       C      L        I    P      B   B  O   O  A   A  R R    D   D         %
10 %        CCCC  LLLLL  IIIII  P      BBBB    OOO   A   A  R  R   DDDD          %
11 %                                                                             %
12 %                                                                             %
13 %                        Read/Write Windows Clipboard.                        %
14 %                                                                             %
15 %                              Software Design                                %
16 %                             Leonard Rosenthol                               %
17 %                                 May 2002                                    %
18 %                                                                             %
19 %                                                                             %
20 %  Copyright 1999-2016 ImageMagick Studio LLC, a non-profit organization      %
21 %  dedicated to making software imaging solutions freely available.           %
22 %                                                                             %
23 %  You may not use this file except in compliance with the License.  You may  %
24 %  obtain a copy of the License at                                            %
25 %                                                                             %
26 %    http://www.imagemagick.org/script/license.php                            %
27 %                                                                             %
28 %  Unless required by applicable law or agreed to in writing, software        %
29 %  distributed under the License is distributed on an "AS IS" BASIS,          %
30 %  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.   %
31 %  See the License for the specific language governing permissions and        %
32 %  limitations under the License.                                             %
33 %                                                                             %
34 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
35 %
36 %
37 */
38 
39 /*
40   Include declarations.
41 */
42 #include "MagickCore/studio.h"
43 #if defined(MAGICKCORE_WINGDI32_DELEGATE)
44 #  if defined(__CYGWIN__)
45 #    include <windows.h>
46 #  else
47      /* All MinGW needs ... */
48 #    include "MagickCore/nt-base-private.h"
49 #    include <wingdi.h>
50 #  endif
51 #endif
52 #include "MagickCore/blob.h"
53 #include "MagickCore/blob-private.h"
54 #include "MagickCore/cache.h"
55 #include "MagickCore/exception.h"
56 #include "MagickCore/exception-private.h"
57 #include "MagickCore/image.h"
58 #include "MagickCore/image-private.h"
59 #include "MagickCore/list.h"
60 #include "MagickCore/magick.h"
61 #include "MagickCore/memory_.h"
62 #include "MagickCore/nt-feature.h"
63 #include "MagickCore/pixel-accessor.h"
64 #include "MagickCore/quantum-private.h"
65 #include "MagickCore/static.h"
66 #include "MagickCore/string_.h"
67 #include "MagickCore/module.h"
68 
69 /*
70   Forward declarations.
71 */
72 #if defined(MAGICKCORE_WINGDI32_DELEGATE)
73 static MagickBooleanType
74   WriteCLIPBOARDImage(const ImageInfo *,Image *,ExceptionInfo *);
75 #endif
76 
77 /*
78 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
79 %                                                                             %
80 %                                                                             %
81 %                                                                             %
82 %   R e a d C L I P B O A R D I m a g e                                       %
83 %                                                                             %
84 %                                                                             %
85 %                                                                             %
86 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
87 %
88 %  ReadCLIPBOARDImage() reads an image from the system clipboard and returns
89 %  it.  It allocates the memory necessary for the new Image structure and
90 %  returns a pointer to the new image.
91 %
92 %  The format of the ReadCLIPBOARDImage method is:
93 %
94 %      Image *ReadCLIPBOARDImage(const ImageInfo *image_info,
95 %        ExceptionInfo exception)
96 %
97 %  A description of each parameter follows:
98 %
99 %    o image_info: the image info.
100 %
101 %    o exception: return any errors or warnings in this structure.
102 %
103 */
104 #if defined(MAGICKCORE_WINGDI32_DELEGATE)
ReadCLIPBOARDImage(const ImageInfo * image_info,ExceptionInfo * exception)105 static Image *ReadCLIPBOARDImage(const ImageInfo *image_info,
106   ExceptionInfo *exception)
107 {
108   Image
109     *image;
110 
111   MagickBooleanType
112     status;
113 
114   register ssize_t
115     x;
116 
117   register Quantum
118     *q;
119 
120   ssize_t
121     y;
122 
123   assert(image_info != (const ImageInfo *) NULL);
124   assert(image_info->signature == MagickCoreSignature);
125   if (image_info->debug != MagickFalse)
126     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
127       image_info->filename);
128   assert(exception != (ExceptionInfo *) NULL);
129   assert(exception->signature == MagickCoreSignature);
130   image=AcquireImage(image_info,exception);
131   {
132     HBITMAP
133       bitmapH;
134 
135     HPALETTE
136       hPal;
137 
138     OpenClipboard(NULL);
139     bitmapH=(HBITMAP) GetClipboardData(CF_BITMAP);
140     hPal=(HPALETTE) GetClipboardData(CF_PALETTE);
141     CloseClipboard();
142     if ( bitmapH == NULL )
143       ThrowReaderException(CoderError,"NoBitmapOnClipboard");
144     {
145       BITMAPINFO
146         DIBinfo;
147 
148       BITMAP
149         bitmap;
150 
151       HBITMAP
152         hBitmap,
153         hOldBitmap;
154 
155       HDC
156         hDC,
157         hMemDC;
158 
159       RGBQUAD
160         *pBits,
161         *ppBits;
162 
163       /* create an offscreen DC for the source */
164       hMemDC=CreateCompatibleDC(NULL);
165       hOldBitmap=(HBITMAP) SelectObject(hMemDC,bitmapH);
166       GetObject(bitmapH,sizeof(BITMAP),(LPSTR) &bitmap);
167       if ((image->columns == 0) || (image->rows == 0))
168         {
169           image->columns=bitmap.bmWidth;
170           image->rows=bitmap.bmHeight;
171         }
172       status=SetImageExtent(image,image->columns,image->rows,exception);
173       if (status == MagickFalse)
174         return(DestroyImageList(image));
175       /*
176         Initialize the bitmap header info.
177       */
178       (void) ResetMagickMemory(&DIBinfo,0,sizeof(BITMAPINFO));
179       DIBinfo.bmiHeader.biSize=sizeof(BITMAPINFOHEADER);
180       DIBinfo.bmiHeader.biWidth=(LONG) image->columns;
181       DIBinfo.bmiHeader.biHeight=(-1)*(LONG) image->rows;
182       DIBinfo.bmiHeader.biPlanes=1;
183       DIBinfo.bmiHeader.biBitCount=32;
184       DIBinfo.bmiHeader.biCompression=BI_RGB;
185       hDC=GetDC(NULL);
186       if (hDC == 0)
187         ThrowReaderException(CoderError,"UnableToCreateADC");
188       hBitmap=CreateDIBSection(hDC,&DIBinfo,DIB_RGB_COLORS,(void **) &ppBits,
189         NULL,0);
190       ReleaseDC(NULL,hDC);
191       if (hBitmap == 0)
192         ThrowReaderException(CoderError,"UnableToCreateBitmap");
193       /* create an offscreen DC */
194       hDC=CreateCompatibleDC(NULL);
195       if (hDC == 0)
196         {
197           DeleteObject(hBitmap);
198           ThrowReaderException(CoderError,"UnableToCreateADC");
199         }
200       hOldBitmap=(HBITMAP) SelectObject(hDC,hBitmap);
201       if (hOldBitmap == 0)
202         {
203           DeleteDC(hDC);
204           DeleteObject(hBitmap);
205           ThrowReaderException(CoderError,"UnableToCreateBitmap");
206         }
207       if (hPal != NULL)
208       {
209         /* Kenichi Masuko says this needed */
210         SelectPalette(hDC, hPal, FALSE);
211         RealizePalette(hDC);
212       }
213       /* bitblt from the memory to the DIB-based one */
214       BitBlt(hDC,0,0,(int) image->columns,(int) image->rows,hMemDC,0,0,SRCCOPY);
215       /* finally copy the pixels! */
216       pBits=ppBits;
217       for (y=0; y < (ssize_t) image->rows; y++)
218       {
219         q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
220         if (q == (Quantum *) NULL)
221           break;
222         for (x=0; x < (ssize_t) image->columns; x++)
223         {
224           SetPixelRed(image,ScaleCharToQuantum(pBits->rgbRed),q);
225           SetPixelGreen(image,ScaleCharToQuantum(pBits->rgbGreen),q);
226           SetPixelBlue(image,ScaleCharToQuantum(pBits->rgbBlue),q);
227           SetPixelAlpha(image,OpaqueAlpha,q);
228           pBits++;
229           q+=GetPixelChannels(image);
230         }
231         if (SyncAuthenticPixels(image,exception) == MagickFalse)
232           break;
233       }
234       DeleteDC(hDC);
235       DeleteObject(hBitmap);
236     }
237   }
238   (void) CloseBlob(image);
239   return(GetFirstImageInList(image));
240 }
241 #endif /* MAGICKCORE_WINGDI32_DELEGATE */
242 
243 /*
244 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
245 %                                                                             %
246 %                                                                             %
247 %                                                                             %
248 %   R e g i s t e r C L I P B O A R D I m a g e                               %
249 %                                                                             %
250 %                                                                             %
251 %                                                                             %
252 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
253 %
254 %  RegisterCLIPBOARDImage() adds attributes for the clipboard "image format" to
255 %  the list of supported formats.  The attributes include the image format
256 %  tag, a method to read and/or write the format, whether the format
257 %  supports the saving of more than one frame to the same file or blob,
258 %  whether the format supports native in-memory I/O, and a brief
259 %  description of the format.
260 %
261 %  The format of the RegisterCLIPBOARDImage method is:
262 %
263 %      size_t RegisterCLIPBOARDImage(void)
264 %
265 */
RegisterCLIPBOARDImage(void)266 ModuleExport size_t RegisterCLIPBOARDImage(void)
267 {
268   MagickInfo
269     *entry;
270 
271   entry=AcquireMagickInfo("CLIPBOARD","CLIPBOARD","The system clipboard");
272 #if defined(MAGICKCORE_WINGDI32_DELEGATE)
273   entry->decoder=(DecodeImageHandler *) ReadCLIPBOARDImage;
274   entry->encoder=(EncodeImageHandler *) WriteCLIPBOARDImage;
275 #endif
276   entry->flags^=CoderAdjoinFlag;
277   entry->format_type=ImplicitFormatType;
278   (void) RegisterMagickInfo(entry);
279   return(MagickImageCoderSignature);
280 }
281 
282 /*
283 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
284 %                                                                             %
285 %                                                                             %
286 %                                                                             %
287 %   U n r e g i s t e r C L I P B O A R D I m a g e                           %
288 %                                                                             %
289 %                                                                             %
290 %                                                                             %
291 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
292 %
293 %  UnregisterCLIPBOARDImage() removes format registrations made by the
294 %  RGB module from the list of supported formats.
295 %
296 %  The format of the UnregisterCLIPBOARDImage method is:
297 %
298 %      UnregisterCLIPBOARDImage(void)
299 %
300 */
UnregisterCLIPBOARDImage(void)301 ModuleExport void UnregisterCLIPBOARDImage(void)
302 {
303   (void) UnregisterMagickInfo("CLIPBOARD");
304 }
305 
306 /*
307 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
308 %                                                                             %
309 %                                                                             %
310 %                                                                             %
311 %   W r i t e C L I P B O A R D I m a g e                                     %
312 %                                                                             %
313 %                                                                             %
314 %                                                                             %
315 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
316 %
317 %  WriteCLIPBOARDImage() writes an image to the system clipboard.
318 %
319 %  The format of the WriteCLIPBOARDImage method is:
320 %
321 %      MagickBooleanType WriteCLIPBOARDImage(const ImageInfo *image_info,
322 %        Image *image,ExceptionInfo *exception)
323 %
324 %  A description of each parameter follows.
325 %
326 %    o image_info: the image info.
327 %
328 %    o image:  The image.
329 %
330 %    o exception: return any errors or warnings in this structure.
331 %
332 */
333 #if defined(MAGICKCORE_WINGDI32_DELEGATE)
WriteCLIPBOARDImage(const ImageInfo * image_info,Image * image,ExceptionInfo * exception)334 static MagickBooleanType WriteCLIPBOARDImage(const ImageInfo *image_info,
335   Image *image,ExceptionInfo *exception)
336 {
337   /*
338     Allocate memory for pixels.
339   */
340   assert(image_info != (const ImageInfo *) NULL);
341   assert(image_info->signature == MagickCoreSignature);
342   assert(image != (Image *) NULL);
343   assert(image->signature == MagickCoreSignature);
344   if (image->debug != MagickFalse)
345     (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
346   {
347     HBITMAP
348       bitmapH;
349 
350     OpenClipboard(NULL);
351     EmptyClipboard();
352     bitmapH=(HBITMAP) ImageToHBITMAP(image,exception);
353     SetClipboardData(CF_BITMAP,bitmapH);
354     CloseClipboard();
355   }
356   return(MagickTrue);
357 }
358 #endif /* MAGICKCORE_WINGDI32_DELEGATE */
359