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)
73static 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)
105static 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*/
266ModuleExport 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*/
301ModuleExport 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)
334static 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