diff options
Diffstat (limited to 'filter/source/graphicfilter/epict/epict.cxx')
| -rw-r--r-- | filter/source/graphicfilter/epict/epict.cxx | 75 |
1 files changed, 34 insertions, 41 deletions
diff --git a/filter/source/graphicfilter/epict/epict.cxx b/filter/source/graphicfilter/epict/epict.cxx index 4114cdbfdd6a..765b4f74544d 100644 --- a/filter/source/graphicfilter/epict/epict.cxx +++ b/filter/source/graphicfilter/epict/epict.cxx @@ -241,13 +241,11 @@ Polygon PictWriter::PolyPolygonToPolygon(const PolyPolygon & rPolyPoly) nSize2=aPoly2.GetSize(); // At first we look for a point in aPoly1 (referenced by nBestIdx1) and a - // point in aPoly2 (referenced by nBestid2), which - // Zunaechst werden ein Punkt in aPoly1 (referenziert durch nBestIdx1) und ein - // Punkt in aPoly2 (referenziert durch nBestIdx2) gesucht, die moeglichst dicht - // beieinander liegen. Da dies mit quadratischem Aufwand einher geht, und somit - // manche Bilder Ewigkeiten benoetigen, um exportiert zu werden, begrenzen wir - // die Anzahl der Tests auf 1000, und brechen die Suche ggf. schon vorher ab. - // Dadruch wird das Ergebnis nicht falsch, sondern eventuell nicht so schoen. + // point in aPoly2 (referenced by nBestid2), which are as close together as + // possible. Because this is following square complexity and therefore some + // pictures would need infinite time to export, we limit the the number of test + // by the number of 1000 and cancel the search if necessary preliminarily. + // The result of this will not be wrong but rather not so beautiful. nCountdownTests=1000; nBestDistSqr=0x7fffffff; nBestIdx1=0; @@ -907,18 +905,17 @@ void PictWriter::WriteOpcode_BitsRect(const Point & rPoint, const Size & rSize, // If 24-Bit, then create the Opcode 'DirectBitsRect': if ( nBitsPerPixel == 24 ) { - // Anzahl Bytes einer (ungepackten) Zeile in Quelle und Ziel berechnen: + // Calculate the number of bytes of an (uncompressed) line of source and destination. nSrcRowBytes =( ( 3 * nWidth ) + 0x0003 ) & 0xfffc; nDstRowBytes = nWidth * 4; // writing Opcode and BaseAddr (?): *pPict << (sal_uInt16)0x009a << (sal_uInt32)0x000000ff; - // Normalerweise wollen wir den Packing-Type 4 (Run length encoding - // for 32-Bit Pixels) erzeugen. Wenn aber RowBytes<8 gilt, sind die Daten - // grundsaetzlich ungepackt, auch wenn der Packing-Type 4 angegeben ist, - // was etwas komisch erscheint. Daher wollen wir in so einem Fall lieber - // gleich den Packing-Type 1 (ungepackt) angeben: + // Normally we want to produce packing type 4 (run length encoding + // for 32-bit pixels). But if RowBytes<8 is true, generally all data is + // unpacked even if packing type 4 is specified, which seems a little bit + // strange. Hence we want to specify packing type 1 (no packing) in these cases: if ( nDstRowBytes < 8 ) nPackType = 1; @@ -975,14 +972,14 @@ void PictWriter::WriteOpcode_BitsRect(const Point & rPoint, const Size & rSize, } else // packing ( PackType == 4 ) { - // Speicher fuer Zeilen-Zwischen-Datenstruktur allozieren: + // allocate memory for lines-intermediate-data-structure for ( nc = 0; nc < 4; nc++ ) pComp[ nc ] = new sal_uInt8[ nWidth ]; // loop trough rows: for ( ny = 0; ny < nHeight; ny++ ) { - // Zeil ny der Quelle in die Zwischen-Datenstrktur einlesen: + // read line ny of source into the intermediate data structure for ( nx = 0; nx < nWidth; nx++ ) { @@ -1025,7 +1022,7 @@ void PictWriter::WriteOpcode_BitsRect(const Point & rPoint, const Size & rSize, nEqu3++; } - // Die Daten von nx bis nEqu3 unkomprimiert schreiben (ggf. in mehreren Records): + // write the data from nx to nEqu3 uncompressed (into multiple records if necessarcy); while ( nEqu3 > nx ) { nCount = nEqu3 - nx; @@ -1041,8 +1038,7 @@ void PictWriter::WriteOpcode_BitsRect(const Point & rPoint, const Size & rSize, while ( nCount > 0 ); } - // Jetzt einen Komprimierungs-Record erzeugen (falls oben mindestens 3 - // gleiche Bytes gefunden): + // now create a compression record (if at least 3 identical bytes were found above) if ( nx < nWidth ) { // Hint: Then one has nx==nEqu3 (hopefully) nCount=3; // Three bytes are equal, as we found out above @@ -1070,7 +1066,7 @@ void PictWriter::WriteOpcode_BitsRect(const Point & rPoint, const Size & rSize, pPict->Seek( nPos ); // count percentages, Callback, check errors: - nActBitmapPercent = ( ny * 70 / nHeight ) + 30; // (30% machten schon das Schreiben der Win-BMP-Datei aus) + nActBitmapPercent = ( ny * 70 / nHeight ) + 30; // (30% already added up to the writing of the Win-BMP file) MayCallback(); } // clean up: @@ -1081,8 +1077,8 @@ void PictWriter::WriteOpcode_BitsRect(const Point & rPoint, const Size & rSize, else { // don't generate 24-bit i.e. Opcode 'PackBitsRect': - // Bei 1-Bit-Bildern ignorieren manche Import-Filter die Palette und nehmen statt - // dessen die Vorder- und Hintergrundfarbe: + // Some input filters are ignoring the palette of 1-bit images and are using + // the foreground and the background color instead. if ( nBitsPerPixel == 1 ) { WriteOpcode_RGBBkCol( pAcc->GetPaletteColor( 0 ) ); @@ -1094,18 +1090,17 @@ void PictWriter::WriteOpcode_BitsRect(const Point & rPoint, const Size & rSize, WriteOpcode_RGBFgCol( Color( COL_WHITE ) ); } - // Anzahl Bytes einer (ungepackten) Zeile in Ziel und Quelle berechnen: + // Calculate the number of bytes of an (unpacked) line of source an destination. nDstRowBytes = ( nWidth * nBitsPerPixel + 7 ) >> 3; nSrcRowBytes = ( nDstRowBytes + 3 ) & 0xfffffffc; // writing Opcode: *pPict << (sal_uInt16)0x0098; - // Normalerweise wollen wir den Packing-Type 0 (default Packing) erzeugen. - // Wenn aber RowBytes<8 gilt, sind die Daten grundsaetzlich ungepackt, - // auch wenn der Packing-Type 0 angegeben ist, was etwas komisch erscheint. - // Daher wollen wir in so einem Fall lieber gleich den Packing-Type 1 (ungepackt) - // angeben: + // Normally we want to produce packing type 0 (default packing). + // But if RowBytes<8 is true, generally all data is unpacked even if packing + // type 0 is specified, which seems a little bit strange. Hence we want to + // specify packing type 1 (no packing) in these cases. if ( nDstRowBytes < 8 ) nPackType = 1; else @@ -1162,8 +1157,7 @@ void PictWriter::WriteOpcode_BitsRect(const Point & rPoint, const Size & rSize, for ( ny = 0; ny < nHeight; ny++ ) { - // Zeile ny der Quelle in den Zwischenspeicher einlesen: - + // read line ny of source into the buffer: switch ( nBitsPerPixel ) { case 1 : @@ -1194,7 +1188,7 @@ void PictWriter::WriteOpcode_BitsRect(const Point & rPoint, const Size & rSize, // remember start of the row in the target: nDstRowPos = pPict->Tell(); - // ByteCount (das ist die Groesse der gepackten Zeile) zunaechst 0 (wird spaeter berichtigt): + // ByteCount (this is the size of the packed line) initialized with 0 (will be corrected later): if ( nDstRowBytes > 250 ) *pPict << (sal_uInt16)0; else @@ -1204,9 +1198,9 @@ void PictWriter::WriteOpcode_BitsRect(const Point & rPoint, const Size & rSize, nx=0; while ( nx < nDstRowBytes && bStatus ) { - // Die Position von 3 gleichen Bytes suchen und in nEqu3 merken. - // wenn nicht gefunden, dann nEqu3=nDstRowBytes setzten. - // Wenn doch gefunden, dann in nEquData den Wert der Bytes merken. + // Look for the position of three identical bytes and remember it in nEqu3. + // Set nEqu3=nDstRowBytes if not found. + // Else remember the value of these bytes in nEquData. nEqu3 = nx; for (;;) { @@ -1221,7 +1215,7 @@ void PictWriter::WriteOpcode_BitsRect(const Point & rPoint, const Size & rSize, nEqu3++; } - // Die Daten von nx bis nEqu3 unkomprimiert schreiben (ggf. in mehreren Records): + // Write the data unpacked from nx to nEqu3 (in multiple records if necessary): while ( nEqu3 > nx ) { nCount = nEqu3 - nx; @@ -1236,19 +1230,18 @@ void PictWriter::WriteOpcode_BitsRect(const Point & rPoint, const Size & rSize, } while ( nCount > 0 ); } - // Jetzt einen Komprimierungs-Record erzeugen (falls oben mindestens 3 - // gleiche Bytes gefunden): + // Now create a compression record (if at least 3 identical bytes were found above): if ( nx < nDstRowBytes ) - { // Hinweis: es gilt nx==nEqu3 (hoffentlich) - nCount = 3; // Drei Bytes sind gleich, wie weiter oben herausgefunden. - // Pruefen, ob es weitere gleiche Bytes gibts (dabei Max.-Record-Groesse beachten): + { // Note: it is imperative nx==nEqu3 (hopefully) + nCount = 3; // three bytes are identically, as identified above + // Check if more identical bytes exist. (in doing so, consider max record size): while ( nx + nCount < nDstRowBytes && nCount < 128 ) { if ( nEquData != pPix[ nx + nCount ] ) break; nCount++; } - // nCount gleiche Bytes komprimiert schreiben: + // write nCount identical bytes unpacked: nFlagCounterByte = (sal_uInt8)( 1 - (long)nCount ); *pPict << nFlagCounterByte << nEquData; nx += nCount; @@ -1266,7 +1259,7 @@ void PictWriter::WriteOpcode_BitsRect(const Point & rPoint, const Size & rSize, } // count percentages, Callback, check errors: - nActBitmapPercent =( ny * 70 / nHeight ) + 30; // (30% machten schon das Schreiben der Win-BMP-Datei aus) + nActBitmapPercent =( ny * 70 / nHeight ) + 30; // (30% already added up to the writing of the Win-BMP file) MayCallback(); if ( pPict->GetError() ) bStatus = sal_False; |