Mercurial > hg > orthanc-stone
view Framework/Viewport/CairoSurface.cpp @ 39:9ee7e2f5f1a3
sync
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Wed, 21 Dec 2016 14:19:38 +0100 |
parents | ff1e935768e7 |
children | 7207a407bcd8 |
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/** * Stone of Orthanc * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics * Department, University Hospital of Liege, Belgium * * This program is free software: you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation, either version 3 of the * License, or (at your option) any later version. * * In addition, as a special exception, the copyright holders of this * program give permission to link the code of its release with the * OpenSSL project's "OpenSSL" library (or with modified versions of it * that use the same license as the "OpenSSL" library), and distribute * the linked executables. You must obey the GNU General Public License * in all respects for all of the code used other than "OpenSSL". If you * modify file(s) with this exception, you may extend this exception to * your version of the file(s), but you are not obligated to do so. If * you do not wish to do so, delete this exception statement from your * version. If you delete this exception statement from all source files * in the program, then also delete it here. * * 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 * General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. **/ #include "CairoSurface.h" #include "../../Resources/Orthanc/Core/Logging.h" #include "../../Resources/Orthanc/Core/OrthancException.h" #include "../../Resources/Orthanc/Core/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) { Release(); surface_ = cairo_image_surface_create(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) { 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_), 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) { if (width_ != width || height_ != height) { Allocate(width, height); } } void CairoSurface::Copy(const CairoSurface& other) { Orthanc::ImageAccessor source = other.GetConstAccessor(); Orthanc::ImageAccessor target = GetAccessor(); Orthanc::ImageProcessing::Copy(target, source); } Orthanc::ImageAccessor CairoSurface::GetConstAccessor() const { Orthanc::ImageAccessor accessor; accessor.AssignReadOnly(Orthanc::PixelFormat_BGRA32, width_, height_, pitch_, buffer_); return accessor; } Orthanc::ImageAccessor CairoSurface::GetAccessor() { Orthanc::ImageAccessor accessor; accessor.AssignWritable(Orthanc::PixelFormat_BGRA32, width_, height_, pitch_, buffer_); return accessor; } }