Mercurial > hg > orthanc-stone
view Framework/Radiography/RadiographyWidget.cpp @ 872:733c6db3e5a3 am-dev
limiting the size of the cache
author | Alain Mazy <alain@mazy.be> |
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date | Mon, 01 Jul 2019 13:36:51 +0200 |
parents | be9c1530d40a |
children | b537002f83a9 d33ae2b0db9d |
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/** * Stone of Orthanc * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics * Department, University Hospital of Liege, Belgium * Copyright (C) 2017-2019 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 "RadiographyWidget.h" #include <Core/OrthancException.h> #include <Core/Images/Image.h> #include <Core/Images/ImageProcessing.h> #include "RadiographyMaskLayer.h" namespace OrthancStone { bool RadiographyWidget::IsInvertedInternal() const { // MONOCHROME1 images must be inverted and the user can invert the // image, too -> XOR the two return (scene_->GetPreferredPhotomotricDisplayMode() == RadiographyPhotometricDisplayMode_Monochrome1) ^ invert_; } void RadiographyWidget::RenderBackground( Orthanc::ImageAccessor& image, float minValue, float maxValue) { // wipe background before rendering float backgroundValue = minValue; switch (scene_->GetPreferredPhotomotricDisplayMode()) { case RadiographyPhotometricDisplayMode_Monochrome1: case RadiographyPhotometricDisplayMode_Default: if (IsInvertedInternal()) backgroundValue = maxValue; else backgroundValue = minValue; break; case RadiographyPhotometricDisplayMode_Monochrome2: if (IsInvertedInternal()) backgroundValue = minValue; else backgroundValue = maxValue; break; default: throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); } Orthanc::ImageProcessing::Set(image, static_cast<int64_t>(backgroundValue)); } bool RadiographyWidget::RenderInternal(unsigned int width, unsigned int height, ImageInterpolation interpolation) { float windowCenter, windowWidth; scene_->GetWindowingWithDefault(windowCenter, windowWidth); float x0 = windowCenter - windowWidth / 2.0f; float x1 = windowCenter + windowWidth / 2.0f; if (windowWidth <= 0.001f) // Avoid division by zero at (*) { return false; } else { if (floatBuffer_.get() == NULL || floatBuffer_->GetWidth() != width || floatBuffer_->GetHeight() != height) { floatBuffer_.reset(new Orthanc::Image( Orthanc::PixelFormat_Float32, width, height, false)); } if (cairoBuffer_.get() == NULL || cairoBuffer_->GetWidth() != width || cairoBuffer_->GetHeight() != height) { cairoBuffer_.reset(new CairoSurface(width, height, false /* no alpha */)); } RenderBackground(*floatBuffer_, x0, x1); scene_->Render(*floatBuffer_, GetView().GetMatrix(), interpolation); // Conversion from Float32 to BGRA32 (cairo). Very similar to // GrayscaleFrameRenderer => TODO MERGE? Orthanc::ImageAccessor target; cairoBuffer_->GetWriteableAccessor(target); float scaling = 255.0f / (x1 - x0); bool invert = IsInvertedInternal(); for (unsigned int y = 0; y < height; y++) { const float* p = reinterpret_cast<const float*>(floatBuffer_->GetConstRow(y)); uint8_t* q = reinterpret_cast<uint8_t*>(target.GetRow(y)); for (unsigned int x = 0; x < width; x++, p++, q += 4) { uint8_t v = 0; if (*p >= x1) { v = 255; } else if (*p <= x0) { v = 0; } else { // https://en.wikipedia.org/wiki/Linear_interpolation v = static_cast<uint8_t>(scaling * (*p - x0)); // (*) } if (invert) { v = 255 - v; } q[0] = v; q[1] = v; q[2] = v; q[3] = 255; } } return true; } } bool RadiographyWidget::RenderScene(CairoContext& context, const Deprecated::ViewportGeometry& view) { cairo_t* cr = context.GetObject(); if (RenderInternal(context.GetWidth(), context.GetHeight(), interpolation_)) { // https://www.cairographics.org/FAQ/#paint_from_a_surface cairo_save(cr); cairo_identity_matrix(cr); cairo_set_source_surface(cr, cairoBuffer_->GetObject(), 0, 0); cairo_paint(cr); cairo_restore(cr); } else { // https://www.cairographics.org/FAQ/#clear_a_surface context.SetSourceColor(0, 0, 0); cairo_paint(cr); } if (hasSelection_) { scene_->DrawBorder( context, static_cast<unsigned int>(selectedLayer_), view.GetZoom()); } return true; } RadiographyWidget::RadiographyWidget(MessageBroker& broker, boost::shared_ptr<RadiographyScene> scene, const std::string& name) : WorldSceneWidget(name), IObserver(broker), invert_(false), interpolation_(ImageInterpolation_Nearest), hasSelection_(false), selectedLayer_(0) // Dummy initialization { SetScene(scene); } void RadiographyWidget::Select(size_t layer) { hasSelection_ = true; selectedLayer_ = layer; } bool RadiographyWidget::SelectMaskLayer(size_t index) { std::vector<size_t> layerIndexes; size_t count = 0; scene_->GetLayersIndexes(layerIndexes); for (size_t i = 0; i < layerIndexes.size(); ++i) { const RadiographyMaskLayer* maskLayer = dynamic_cast<const RadiographyMaskLayer*>(&(scene_->GetLayer(layerIndexes[i]))); if (maskLayer != NULL) { if (count == index) { Select(layerIndexes[i]); return true; } count++; } } return false; } bool RadiographyWidget::LookupSelectedLayer(size_t& layer) { if (hasSelection_) { layer = selectedLayer_; return true; } else { return false; } } void RadiographyWidget::OnGeometryChanged(const RadiographyScene::GeometryChangedMessage& message) { LOG(INFO) << "Scene geometry has changed"; FitContent(); } void RadiographyWidget::OnContentChanged(const RadiographyScene::ContentChangedMessage& message) { LOG(INFO) << "Scene content has changed"; NotifyContentChanged(); } void RadiographyWidget::SetInvert(bool invert) { if (invert_ != invert) { invert_ = invert; NotifyContentChanged(); } } void RadiographyWidget::SwitchInvert() { invert_ = !invert_; NotifyContentChanged(); } void RadiographyWidget::SetInterpolation(ImageInterpolation interpolation) { if (interpolation_ != interpolation) { interpolation_ = interpolation; NotifyContentChanged(); } } void RadiographyWidget::SetScene(boost::shared_ptr<RadiographyScene> scene) { if (scene_ != NULL) { scene_->Unregister(this); } scene_ = scene; scene_->RegisterObserverCallback( new Callable<RadiographyWidget, RadiographyScene::GeometryChangedMessage> (*this, &RadiographyWidget::OnGeometryChanged)); scene_->RegisterObserverCallback( new Callable<RadiographyWidget, RadiographyScene::ContentChangedMessage> (*this, &RadiographyWidget::OnContentChanged)); NotifyContentChanged(); // force redraw FitContent(); } }