Mercurial > hg > orthanc-stone
diff OrthancStone/Sources/Wrappers/CairoSurface.cpp @ 1512:244ad1e4e76a
reorganization of folders
author | Sebastien Jodogne <s.jodogne@gmail.com> |
---|---|
date | Tue, 07 Jul 2020 16:21:02 +0200 |
parents | Framework/Wrappers/CairoSurface.cpp@30deba7bc8e2 |
children | 4fb8fdf03314 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/OrthancStone/Sources/Wrappers/CairoSurface.cpp Tue Jul 07 16:21:02 2020 +0200 @@ -0,0 +1,155 @@ +/** + * Stone of Orthanc + * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics + * Department, University Hospital of Liege, Belgium + * Copyright (C) 2017-2020 Osimis S.A., Belgium + * + * This program is free software: you can redistribute it and/or + * modify it under the terms of the GNU Affero General Public License + * as published by the Free Software Foundation, either version 3 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Affero General Public License for more details. + * + * You should have received a copy of the GNU Affero General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + **/ + + +#include "CairoSurface.h" + +#include <Logging.h> +#include <OrthancException.h> +#include <Images/ImageProcessing.h> + +namespace OrthancStone +{ + void CairoSurface::Release() + { + if (surface_) + { + cairo_surface_destroy(surface_); + surface_ = NULL; + } + } + + + void CairoSurface::Allocate(unsigned int width, + unsigned int height, + bool hasAlpha) + { + Release(); + + hasAlpha_ = hasAlpha; + + surface_ = cairo_image_surface_create + (hasAlpha ? CAIRO_FORMAT_ARGB32 : CAIRO_FORMAT_RGB24, width, height); + if (!surface_) + { + // Should never occur + throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); + } + + if (cairo_surface_status(surface_) != CAIRO_STATUS_SUCCESS) + { + LOG(ERROR) << "Cannot create a Cairo surface"; + cairo_surface_destroy(surface_); + throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); + } + + width_ = width; + height_ = height; + pitch_ = cairo_image_surface_get_stride(surface_); + buffer_ = cairo_image_surface_get_data(surface_); + } + + + CairoSurface::CairoSurface(Orthanc::ImageAccessor& accessor, + bool hasAlpha) : + hasAlpha_(hasAlpha) + { + if (accessor.GetFormat() != Orthanc::PixelFormat_BGRA32) + { + throw Orthanc::OrthancException(Orthanc::ErrorCode_IncompatibleImageFormat); + } + + width_ = accessor.GetWidth(); + height_ = accessor.GetHeight(); + pitch_ = accessor.GetPitch(); + buffer_ = accessor.GetBuffer(); + + surface_ = cairo_image_surface_create_for_data + (reinterpret_cast<unsigned char*>(buffer_), + hasAlpha_ ? CAIRO_FORMAT_ARGB32 : CAIRO_FORMAT_RGB24, + width_, height_, pitch_); + if (!surface_) + { + // Should never occur + throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); + } + + if (cairo_surface_status(surface_) != CAIRO_STATUS_SUCCESS) + { + LOG(ERROR) << "Bad pitch for a Cairo surface"; + cairo_surface_destroy(surface_); + throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); + } + } + + + void CairoSurface::SetSize(unsigned int width, + unsigned int height, + bool hasAlpha) + { + if (hasAlpha_ != hasAlpha || + width_ != width || + height_ != height) + { + Allocate(width, height, hasAlpha); + } + } + + + void CairoSurface::Copy(const CairoSurface& other) + { + SetSize(other.GetWidth(), other.GetHeight(), other.HasAlpha()); + + Orthanc::ImageAccessor source, target; + + other.GetReadOnlyAccessor(source); + GetWriteableAccessor(target); + + Orthanc::ImageProcessing::Copy(target, source); + + cairo_surface_mark_dirty(surface_); + } + + + void CairoSurface::Copy(const Orthanc::ImageAccessor& source, + bool hasAlpha) + { + SetSize(source.GetWidth(), source.GetHeight(), hasAlpha); + + Orthanc::ImageAccessor target; + GetWriteableAccessor(target); + + Orthanc::ImageProcessing::Convert(target, source); + + cairo_surface_mark_dirty(surface_); + } + + + void CairoSurface::GetReadOnlyAccessor(Orthanc::ImageAccessor& target) const + { + target.AssignReadOnly(Orthanc::PixelFormat_BGRA32, width_, height_, pitch_, buffer_); + } + + + void CairoSurface::GetWriteableAccessor(Orthanc::ImageAccessor& target) + { + target.AssignWritable(Orthanc::PixelFormat_BGRA32, width_, height_, pitch_, buffer_); + } +}