vcl/source/filter/GraphicNativeTransform.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #include <vcl/GraphicNativeTransform.hxx>
  21
  22 #include <vcl/gfxlink.hxx>
  23 #include <vcl/graphicfilter.hxx>
  24 #include <com/sun/star/beans/PropertyValue.hpp>
  25 #include <com/sun/star/uno/Sequence.hxx>
  26 #include <tools/stream.hxx>
  27 #include <comphelper/propertyvalue.hxx>
  28
  29 #include "jpeg/Exif.hxx"
  30 #include "jpeg/JpegTransform.hxx"
  31
  32 GraphicNativeTransform::GraphicNativeTransform(Graphic& rGraphic)
  33     : mrGraphic(rGraphic)
  34 {
  35 }
  36
  37 void GraphicNativeTransform::rotate(Degree10 aInputRotation)
  38 {
  39     // Rotation can be between 0 and 3600
  40     Degree10 aRotation = aInputRotation % 3600_deg10;
  41
  42     if (aRotation == 0_deg10)
  43     {
  44         return; // No rotation is needed
  45     }
  46     else if (aRotation != 900_deg10 && aRotation != 1800_deg10 && aRotation != 2700_deg10)
  47     {
  48         return;
  49     }
  50
  51     GfxLink aLink = mrGraphic.GetGfxLink();
  52     if (aLink.GetType() == GfxLinkType::NativeJpg)
  53     {
  54         rotateJPEG(aRotation);
  55     }
  56     else if (aLink.GetType() == GfxLinkType::NativePng)
  57     {
  58         rotateGeneric(aRotation, u"png");
  59     }
  60     else if (aLink.GetType() == GfxLinkType::NativeGif)
  61     {
  62         rotateGeneric(aRotation, u"gif");
  63     }
  64     else if (aLink.GetType() == GfxLinkType::NONE)
  65     {
  66         rotateBitmapOnly(aRotation);
  67     }
  68 }
  69
  70 bool GraphicNativeTransform::rotateBitmapOnly(Degree10 aRotation)
  71 {
  72     if (mrGraphic.IsAnimated())
  73     {
  74         return false;
  75     }
  76
  77     BitmapEx aBitmap = mrGraphic.GetBitmapEx();
  78     aBitmap.Rotate(aRotation, COL_BLACK);
  79     mrGraphic = aBitmap;
  80
  81     return true;
  82 }
  83
  84 bool GraphicNativeTransform::rotateGeneric(Degree10 aRotation, std::u16string_view aType)
  85 {
  86     // Can't rotate animations yet
  87     if (mrGraphic.IsAnimated())
  88     {
  89         return false;
  90     }
  91
  92     SvMemoryStream aStream;
  93
  94     GraphicFilter& rFilter = GraphicFilter::GetGraphicFilter();
  95
  96     css::uno::Sequence<css::beans::PropertyValue> aFilterData{
  97         comphelper::makePropertyValue(u"Interlaced"_ustr, sal_Int32(0)),
  98         comphelper::makePropertyValue(u"Compression"_ustr, sal_Int32(9)),
  99         comphelper::makePropertyValue(u"Quality"_ustr, sal_Int32(90))
 100     };
 101
 102     sal_uInt16 nFilterFormat = rFilter.GetExportFormatNumberForShortName(aType);
 103
 104     BitmapEx aBitmap = mrGraphic.GetBitmapEx();
 105     aBitmap.Rotate(aRotation, COL_BLACK);
 106     rFilter.ExportGraphic(aBitmap, u"none", aStream, nFilterFormat, &aFilterData);
 107
 108     aStream.Seek(STREAM_SEEK_TO_BEGIN);
 109
 110     Graphic aGraphic;
 111     rFilter.ImportGraphic(aGraphic, u"import", aStream);
 112
 113     mrGraphic = std::move(aGraphic);
 114     return true;
 115 }
 116
 117 void GraphicNativeTransform::rotateJPEG(Degree10 aRotation)
 118 {
 119     BitmapEx aBitmap = mrGraphic.GetBitmapEx();
 120
 121     if (aBitmap.GetSizePixel().Width() % 16 != 0 || aBitmap.GetSizePixel().Height() % 16 != 0)
 122     {
 123         rotateGeneric(aRotation, u"png");
 124     }
 125     else
 126     {
 127         GfxLink aLink = mrGraphic.GetGfxLink();
 128
 129         SvMemoryStream aSourceStream;
 130         aSourceStream.WriteBytes(aLink.GetData(), aLink.GetDataSize());
 131         aSourceStream.Seek(STREAM_SEEK_TO_BEGIN);
 132
 133         exif::Orientation aOrientation = exif::TOP_LEFT;
 134
 135         Exif exif;
 136         if (exif.read(aSourceStream))
 137         {
 138             aOrientation = exif.getOrientation();
 139         }
 140
 141         SvMemoryStream aTargetStream;
 142         JpegTransform transform(aSourceStream, aTargetStream);
 143         transform.setRotate(aRotation);
 144         transform.perform();
 145
 146         aTargetStream.Seek(STREAM_SEEK_TO_BEGIN);
 147
 148         // Reset orientation in exif if needed
 149         if (exif.hasExif() && aOrientation != exif::TOP_LEFT)
 150         {
 151             exif.setOrientation(exif::TOP_LEFT);
 152             exif.write(aTargetStream);
 153         }
 154
 155         aTargetStream.Seek(STREAM_SEEK_TO_BEGIN);
 156
 157         Graphic aGraphic;
 158         GraphicFilter& rFilter = GraphicFilter::GetGraphicFilter();
 159         rFilter.ImportGraphic(aGraphic, u"import", aTargetStream);
 160         mrGraphic = std::move(aGraphic);
 161     }
 162 }
 163
 164 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */