+
+bool wxMakeMetafilePlaceable(const wxString& filename, float scale)
+{
+ return wxMakeMetafilePlaceable(filename, 0, 0, 0, 0, scale, false);
+}
+
+bool wxMakeMetafilePlaceable(const wxString& filename, int x1, int y1, int x2, int y2, float scale, bool useOriginAndExtent)
+{
+ // I'm not sure if this is the correct way of suggesting a scale
+ // to the client application, but it's the only way I can find.
+ int unitsPerInch = (int)(576/scale);
+
+ mfPLACEABLEHEADER header;
+ header.key = 0x9AC6CDD7L;
+ header.hmf = 0;
+ header.bbox.left = (int)(x1);
+ header.bbox.top = (int)(y1);
+ header.bbox.right = (int)(x2);
+ header.bbox.bottom = (int)(y2);
+ header.inch = unitsPerInch;
+ header.reserved = 0;
+
+ // Calculate checksum
+ WORD *p;
+ mfPLACEABLEHEADER *pMFHead = &header;
+ for (p =(WORD *)pMFHead,pMFHead -> checksum = 0;
+ p < (WORD *)&pMFHead ->checksum; ++p)
+ pMFHead ->checksum ^= *p;
+
+ FILE *fd = wxFopen(filename.fn_str(), wxT("rb"));
+ if (!fd) return false;
+
+ wxString tempFileBuf = wxFileName::CreateTempFileName(wxT("mf"));
+ if (tempFileBuf.empty())
+ return false;
+
+ FILE *fHandle = wxFopen(tempFileBuf.fn_str(), wxT("wb"));
+ if (!fHandle)
+ return false;
+ fwrite((void *)&header, sizeof(unsigned char), sizeof(mfPLACEABLEHEADER), fHandle);
+
+ // Calculate origin and extent
+ int originX = x1;
+ int originY = y1;
+ int extentX = x2 - x1;
+ int extentY = (y2 - y1);
+
+ // Read metafile header and write
+ METAHEADER metaHeader;
+ fread((void *)&metaHeader, sizeof(unsigned char), sizeof(metaHeader), fd);
+
+ if (useOriginAndExtent)
+ metaHeader.mtSize += 15;
+ else
+ metaHeader.mtSize += 5;
+
+ fwrite((void *)&metaHeader, sizeof(unsigned char), sizeof(metaHeader), fHandle);
+
+ // Write SetMapMode, SetWindowOrigin and SetWindowExt records
+ char modeBuffer[8];
+ char originBuffer[10];
+ char extentBuffer[10];
+ METARECORD *modeRecord = (METARECORD *)&modeBuffer;
+
+ METARECORD *originRecord = (METARECORD *)&originBuffer;
+ METARECORD *extentRecord = (METARECORD *)&extentBuffer;
+
+ modeRecord->rdSize = 4;
+ modeRecord->rdFunction = META_SETMAPMODE;
+ modeRecord->rdParm[0] = MM_ANISOTROPIC;
+
+ originRecord->rdSize = 5;
+ originRecord->rdFunction = META_SETWINDOWORG;
+ originRecord->rdParm[0] = originY;
+ originRecord->rdParm[1] = originX;
+
+ extentRecord->rdSize = 5;
+ extentRecord->rdFunction = META_SETWINDOWEXT;
+ extentRecord->rdParm[0] = extentY;
+ extentRecord->rdParm[1] = extentX;
+
+ fwrite((void *)modeBuffer, sizeof(char), 8, fHandle);
+
+ if (useOriginAndExtent)
+ {
+ fwrite((void *)originBuffer, sizeof(char), 10, fHandle);
+ fwrite((void *)extentBuffer, sizeof(char), 10, fHandle);
+ }
+
+ int ch = -2;
+ while (ch != EOF)
+ {
+ ch = getc(fd);
+ if (ch != EOF)
+ {
+ putc(ch, fHandle);
+ }
+ }
+ fclose(fHandle);
+ fclose(fd);
+ wxRemoveFile(filename);
+ wxCopyFile(tempFileBuf, filename);
+ wxRemoveFile(tempFileBuf);
+ return true;
+}
+
+
+#if wxUSE_DRAG_AND_DROP
+
+// ----------------------------------------------------------------------------
+// wxMetafileDataObject
+// ----------------------------------------------------------------------------
+
+size_t wxMetafileDataObject::GetDataSize() const
projects / wxWidgets.git / blobdiff