| 1 | ///////////////////////////////////////////////////////////////////////////// |
| 2 | // Name: metafile.cpp |
| 3 | // Purpose: wxMetaFile, wxMetaFileDC etc. These classes are optional. |
| 4 | // Author: AUTHOR |
| 5 | // Modified by: |
| 6 | // Created: 04/01/98 |
| 7 | // RCS-ID: $Id$ |
| 8 | // Copyright: (c) AUTHOR |
| 9 | // Licence: wxWindows licence |
| 10 | ///////////////////////////////////////////////////////////////////////////// |
| 11 | |
| 12 | #ifdef __GNUG__ |
| 13 | #pragma implementation "metafile.h" |
| 14 | #endif |
| 15 | |
| 16 | #include "wx/object.h" |
| 17 | #include "wx/string.h" |
| 18 | #include "wx/dc.h" |
| 19 | #include "wx/stubs/metafile.h" |
| 20 | #include "wx/clipbrd.h" |
| 21 | |
| 22 | extern bool wxClipboardIsOpen; |
| 23 | |
| 24 | #if !USE_SHARED_LIBRARY |
| 25 | IMPLEMENT_DYNAMIC_CLASS(wxMetaFile, wxObject) |
| 26 | IMPLEMENT_ABSTRACT_CLASS(wxMetaFileDC, wxDC) |
| 27 | #endif |
| 28 | |
| 29 | wxMetaFile::wxMetaFile(const wxString& file) |
| 30 | { |
| 31 | // TODO |
| 32 | } |
| 33 | |
| 34 | wxMetaFile::~wxMetaFile() |
| 35 | { |
| 36 | // TODO |
| 37 | } |
| 38 | |
| 39 | bool wxMetaFile::SetClipboard(int width, int height) |
| 40 | { |
| 41 | bool alreadyOpen=wxClipboardOpen(); |
| 42 | if (!alreadyOpen) |
| 43 | { |
| 44 | wxOpenClipboard(); |
| 45 | if (!wxEmptyClipboard()) return FALSE; |
| 46 | } |
| 47 | bool success = wxSetClipboardData(wxDF_METAFILE,this, width,height); |
| 48 | if (!alreadyOpen) wxCloseClipboard(); |
| 49 | return (bool) success; |
| 50 | } |
| 51 | |
| 52 | bool wxMetaFile::Play(wxDC *dc) |
| 53 | { |
| 54 | // TODO |
| 55 | return FALSE; |
| 56 | } |
| 57 | |
| 58 | /* |
| 59 | * Metafile device context |
| 60 | * |
| 61 | */ |
| 62 | |
| 63 | // Original constructor that does not takes origin and extent. If you use this, |
| 64 | // *DO* give origin/extent arguments to wxMakeMetaFilePlaceable. |
| 65 | wxMetaFileDC::wxMetaFileDC(const wxString& file) |
| 66 | { |
| 67 | // TODO |
| 68 | } |
| 69 | |
| 70 | // New constructor that takes origin and extent. If you use this, don't |
| 71 | // give origin/extent arguments to wxMakeMetaFilePlaceable. |
| 72 | wxMetaFileDC::wxMetaFileDC(const wxString& file, int xext, int yext, int xorg, int yorg) |
| 73 | { |
| 74 | // TODO |
| 75 | } |
| 76 | |
| 77 | wxMetaFileDC::~wxMetaFileDC() |
| 78 | { |
| 79 | } |
| 80 | |
| 81 | void wxMetaFileDC::GetTextExtent(const wxString& string, float *x, float *y, |
| 82 | float *descent, float *externalLeading, wxFont *theFont, bool use16bit) |
| 83 | { |
| 84 | // TODO |
| 85 | } |
| 86 | |
| 87 | wxMetaFile *wxMetaFileDC::Close() |
| 88 | { |
| 89 | // TODO |
| 90 | return NULL; |
| 91 | } |
| 92 | |
| 93 | void wxMetaFileDC::SetMapMode(int mode) |
| 94 | { |
| 95 | // TODO |
| 96 | } |
| 97 | |
| 98 | #if 0 |
| 99 | |
| 100 | #ifdef __WIN32__ |
| 101 | struct RECT32 |
| 102 | { |
| 103 | short left; |
| 104 | short top; |
| 105 | short right; |
| 106 | short bottom; |
| 107 | }; |
| 108 | |
| 109 | struct mfPLACEABLEHEADER { |
| 110 | DWORD key; |
| 111 | short hmf; |
| 112 | RECT32 bbox; |
| 113 | WORD inch; |
| 114 | DWORD reserved; |
| 115 | WORD checksum; |
| 116 | }; |
| 117 | #else |
| 118 | struct mfPLACEABLEHEADER { |
| 119 | DWORD key; |
| 120 | HANDLE hmf; |
| 121 | RECT bbox; |
| 122 | WORD inch; |
| 123 | DWORD reserved; |
| 124 | WORD checksum; |
| 125 | }; |
| 126 | #endif |
| 127 | |
| 128 | /* |
| 129 | * Pass filename of existing non-placeable metafile, and bounding box. |
| 130 | * Adds a placeable metafile header, sets the mapping mode to anisotropic, |
| 131 | * and sets the window origin and extent to mimic the wxMM_TEXT mapping mode. |
| 132 | * |
| 133 | */ |
| 134 | |
| 135 | bool wxMakeMetaFilePlaceable(const wxString& filename, float scale) |
| 136 | { |
| 137 | return wxMakeMetaFilePlaceable(filename, 0, 0, 0, 0, scale, FALSE); |
| 138 | } |
| 139 | |
| 140 | bool wxMakeMetaFilePlaceable(const wxString& filename, int x1, int y1, int x2, int y2, float scale, bool useOriginAndExtent) |
| 141 | { |
| 142 | // I'm not sure if this is the correct way of suggesting a scale |
| 143 | // to the client application, but it's the only way I can find. |
| 144 | int unitsPerInch = (int)(576/scale); |
| 145 | |
| 146 | mfPLACEABLEHEADER header; |
| 147 | header.key = 0x9AC6CDD7L; |
| 148 | header.hmf = 0; |
| 149 | header.bbox.left = (int)(x1); |
| 150 | header.bbox.top = (int)(y1); |
| 151 | header.bbox.right = (int)(x2); |
| 152 | header.bbox.bottom = (int)(y2); |
| 153 | header.inch = unitsPerInch; |
| 154 | header.reserved = 0; |
| 155 | |
| 156 | // Calculate checksum |
| 157 | WORD *p; |
| 158 | mfPLACEABLEHEADER *pMFHead = &header; |
| 159 | for (p =(WORD *)pMFHead,pMFHead -> checksum = 0; |
| 160 | p < (WORD *)&pMFHead ->checksum; ++p) |
| 161 | pMFHead ->checksum ^= *p; |
| 162 | |
| 163 | FILE *fd = fopen((char *)(const char *)filename, "rb"); |
| 164 | if (!fd) return FALSE; |
| 165 | |
| 166 | char tempFileBuf[256]; |
| 167 | wxGetTempFileName("mf", tempFileBuf); |
| 168 | FILE *fHandle = fopen(tempFileBuf, "wb"); |
| 169 | if (!fHandle) |
| 170 | return FALSE; |
| 171 | fwrite((void *)&header, sizeof(unsigned char), sizeof(mfPLACEABLEHEADER), fHandle); |
| 172 | |
| 173 | // Calculate origin and extent |
| 174 | int originX = x1; |
| 175 | int originY = y1; |
| 176 | int extentX = x2 - x1; |
| 177 | int extentY = (y2 - y1); |
| 178 | |
| 179 | // Read metafile header and write |
| 180 | METAHEADER metaHeader; |
| 181 | fread((void *)&metaHeader, sizeof(unsigned char), sizeof(metaHeader), fd); |
| 182 | |
| 183 | if (useOriginAndExtent) |
| 184 | metaHeader.mtSize += 15; |
| 185 | else |
| 186 | metaHeader.mtSize += 5; |
| 187 | |
| 188 | fwrite((void *)&metaHeader, sizeof(unsigned char), sizeof(metaHeader), fHandle); |
| 189 | |
| 190 | // Write SetMapMode, SetWindowOrigin and SetWindowExt records |
| 191 | char modeBuffer[8]; |
| 192 | char originBuffer[10]; |
| 193 | char extentBuffer[10]; |
| 194 | METARECORD *modeRecord = (METARECORD *)&modeBuffer; |
| 195 | |
| 196 | METARECORD *originRecord = (METARECORD *)&originBuffer; |
| 197 | METARECORD *extentRecord = (METARECORD *)&extentBuffer; |
| 198 | |
| 199 | modeRecord->rdSize = 4; |
| 200 | modeRecord->rdFunction = META_SETMAPMODE; |
| 201 | modeRecord->rdParm[0] = wxMM_ANISOTROPIC; |
| 202 | |
| 203 | originRecord->rdSize = 5; |
| 204 | originRecord->rdFunction = META_SETWINDOWORG; |
| 205 | originRecord->rdParm[0] = originY; |
| 206 | originRecord->rdParm[1] = originX; |
| 207 | |
| 208 | extentRecord->rdSize = 5; |
| 209 | extentRecord->rdFunction = META_SETWINDOWEXT; |
| 210 | extentRecord->rdParm[0] = extentY; |
| 211 | extentRecord->rdParm[1] = extentX; |
| 212 | |
| 213 | fwrite((void *)modeBuffer, sizeof(char), 8, fHandle); |
| 214 | |
| 215 | if (useOriginAndExtent) |
| 216 | { |
| 217 | fwrite((void *)originBuffer, sizeof(char), 10, fHandle); |
| 218 | fwrite((void *)extentBuffer, sizeof(char), 10, fHandle); |
| 219 | } |
| 220 | |
| 221 | int ch = -2; |
| 222 | while (ch != EOF) |
| 223 | { |
| 224 | ch = getc(fd); |
| 225 | if (ch != EOF) |
| 226 | { |
| 227 | putc(ch, fHandle); |
| 228 | } |
| 229 | } |
| 230 | fclose(fHandle); |
| 231 | fclose(fd); |
| 232 | wxRemoveFile(filename); |
| 233 | wxCopyFile(tempFileBuf, filename); |
| 234 | wxRemoveFile(tempFileBuf); |
| 235 | return TRUE; |
| 236 | } |
| 237 | |
| 238 | #endif |
| 239 | |