Mercurial > hg > orthanc-stone
annotate Framework/Viewport/CairoSurface.cpp @ 40:7207a407bcd8
shared copyright with osimis
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Wed, 04 Jan 2017 16:37:42 +0100 |
| parents | ff1e935768e7 |
| children | 81e2651dca17 |
| rev | line source |
|---|---|
| 0 | 1 /** |
| 2 * Stone of Orthanc | |
| 3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics | |
| 4 * Department, University Hospital of Liege, Belgium | |
|
40
7207a407bcd8
shared copyright with osimis
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
16
diff
changeset
|
5 * Copyright (C) 2017 Osimis, Belgium |
| 0 | 6 * |
| 7 * This program is free software: you can redistribute it and/or | |
| 8 * modify it under the terms of the GNU General Public License as | |
| 9 * published by the Free Software Foundation, either version 3 of the | |
| 10 * License, or (at your option) any later version. | |
| 11 * | |
| 12 * In addition, as a special exception, the copyright holders of this | |
| 13 * program give permission to link the code of its release with the | |
| 14 * OpenSSL project's "OpenSSL" library (or with modified versions of it | |
| 15 * that use the same license as the "OpenSSL" library), and distribute | |
| 16 * the linked executables. You must obey the GNU General Public License | |
| 17 * in all respects for all of the code used other than "OpenSSL". If you | |
| 18 * modify file(s) with this exception, you may extend this exception to | |
| 19 * your version of the file(s), but you are not obligated to do so. If | |
| 20 * you do not wish to do so, delete this exception statement from your | |
| 21 * version. If you delete this exception statement from all source files | |
| 22 * in the program, then also delete it here. | |
| 23 * | |
| 24 * This program is distributed in the hope that it will be useful, but | |
| 25 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 26 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 27 * General Public License for more details. | |
| 28 * | |
| 29 * You should have received a copy of the GNU General Public License | |
| 30 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 31 **/ | |
| 32 | |
| 33 | |
| 34 #include "CairoSurface.h" | |
| 35 | |
| 16 | 36 #include "../../Resources/Orthanc/Core/Logging.h" |
| 37 #include "../../Resources/Orthanc/Core/OrthancException.h" | |
| 38 #include "../../Resources/Orthanc/Core/Images/ImageProcessing.h" | |
| 0 | 39 |
| 40 namespace OrthancStone | |
| 41 { | |
| 42 void CairoSurface::Release() | |
| 43 { | |
| 44 if (surface_) | |
| 45 { | |
| 46 cairo_surface_destroy(surface_); | |
| 47 surface_ = NULL; | |
| 48 } | |
| 49 } | |
| 50 | |
| 51 | |
| 52 void CairoSurface::Allocate(unsigned int width, | |
| 53 unsigned int height) | |
| 54 { | |
| 55 Release(); | |
| 56 | |
| 57 surface_ = cairo_image_surface_create(CAIRO_FORMAT_RGB24, width, height); | |
| 58 if (!surface_) | |
| 59 { | |
| 60 // Should never occur | |
| 61 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); | |
| 62 } | |
| 63 | |
| 64 if (cairo_surface_status(surface_) != CAIRO_STATUS_SUCCESS) | |
| 65 { | |
| 66 LOG(ERROR) << "Cannot create a Cairo surface"; | |
| 67 cairo_surface_destroy(surface_); | |
| 68 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); | |
| 69 } | |
| 70 | |
| 71 width_ = width; | |
| 72 height_ = height; | |
| 73 pitch_ = cairo_image_surface_get_stride(surface_); | |
| 74 buffer_ = cairo_image_surface_get_data(surface_); | |
| 75 } | |
| 76 | |
| 77 | |
| 78 CairoSurface::CairoSurface(Orthanc::ImageAccessor& accessor) | |
| 79 { | |
| 80 if (accessor.GetFormat() != Orthanc::PixelFormat_BGRA32) | |
| 81 { | |
| 82 throw Orthanc::OrthancException(Orthanc::ErrorCode_IncompatibleImageFormat); | |
| 83 } | |
| 84 | |
| 85 width_ = accessor.GetWidth(); | |
| 86 height_ = accessor.GetHeight(); | |
| 87 pitch_ = accessor.GetPitch(); | |
| 88 buffer_ = accessor.GetBuffer(); | |
| 89 | |
| 90 surface_ = cairo_image_surface_create_for_data | |
| 91 (reinterpret_cast<unsigned char*>(buffer_), CAIRO_FORMAT_RGB24, width_, height_, pitch_); | |
| 92 if (!surface_) | |
| 93 { | |
| 94 // Should never occur | |
| 95 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); | |
| 96 } | |
| 97 | |
| 98 if (cairo_surface_status(surface_) != CAIRO_STATUS_SUCCESS) | |
| 99 { | |
| 100 LOG(ERROR) << "Bad pitch for a Cairo surface"; | |
| 101 cairo_surface_destroy(surface_); | |
| 102 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); | |
| 103 } | |
| 104 } | |
| 105 | |
| 106 | |
| 107 void CairoSurface::SetSize(unsigned int width, | |
| 108 unsigned int height) | |
| 109 { | |
| 110 if (width_ != width || | |
| 111 height_ != height) | |
| 112 { | |
| 113 Allocate(width, height); | |
| 114 } | |
| 115 } | |
| 116 | |
| 117 | |
| 118 void CairoSurface::Copy(const CairoSurface& other) | |
| 119 { | |
| 120 Orthanc::ImageAccessor source = other.GetConstAccessor(); | |
| 121 Orthanc::ImageAccessor target = GetAccessor(); | |
| 122 Orthanc::ImageProcessing::Copy(target, source); | |
| 123 } | |
| 124 | |
| 125 | |
| 126 Orthanc::ImageAccessor CairoSurface::GetConstAccessor() const | |
| 127 { | |
| 128 Orthanc::ImageAccessor accessor; | |
| 129 accessor.AssignReadOnly(Orthanc::PixelFormat_BGRA32, width_, height_, pitch_, buffer_); | |
| 130 return accessor; | |
| 131 } | |
| 132 | |
| 133 | |
| 134 Orthanc::ImageAccessor CairoSurface::GetAccessor() | |
| 135 { | |
| 136 Orthanc::ImageAccessor accessor; | |
| 137 accessor.AssignWritable(Orthanc::PixelFormat_BGRA32, width_, height_, pitch_, buffer_); | |
| 138 return accessor; | |
| 139 } | |
| 140 } |