Mercurial > hg > orthanc-stone
diff Framework/Scene2D/Internals/CairoColorTextureRenderer.cpp @ 597:9e51fb773bbd
CairoCompositor
author | Sebastien Jodogne <s.jodogne@gmail.com> |
---|---|
date | Fri, 26 Apr 2019 17:28:18 +0200 |
parents | |
children | 55411e7da2f7 |
line wrap: on
line diff
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/Framework/Scene2D/Internals/CairoColorTextureRenderer.cpp Fri Apr 26 17:28:18 2019 +0200 @@ -0,0 +1,79 @@ +/** + * 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 "CairoColorTextureRenderer.h" + +#include "../ColorTextureSceneLayer.h" + +namespace OrthancStone +{ + namespace Internals + { + CairoColorTextureRenderer::CairoColorTextureRenderer(ICairoContextProvider& target, + const ISceneLayer& layer) : + target_(target) + { + Update(layer); + } + + + void CairoColorTextureRenderer::Update(const ISceneLayer& layer) + { + const ColorTextureSceneLayer& l = dynamic_cast<const ColorTextureSceneLayer&>(layer); + + texture_.Copy(l.GetTexture(), true); + textureTransform_ = l.GetTransform(); + isLinearInterpolation_ = l.IsLinearInterpolation(); + } + + + void CairoColorTextureRenderer::Render(const AffineTransform2D& transform) + { + cairo_t* cr = target_.GetCairoContext(); + + AffineTransform2D t = + AffineTransform2D::Combine(transform, textureTransform_); + Matrix h = t.GetHomogeneousMatrix(); + + cairo_save(cr); + + cairo_matrix_t m; + cairo_matrix_init(&m, h(0, 0), h(1, 0), h(0, 1), h(1, 1), h(0, 2), h(1, 2)); + cairo_transform(cr, &m); + + cairo_set_operator(cr, CAIRO_OPERATOR_OVER); + cairo_set_source_surface(cr, texture_.GetObject(), 0, 0); + + if (isLinearInterpolation_) + { + cairo_pattern_set_filter(cairo_get_source(cr), CAIRO_FILTER_BILINEAR); + } + else + { + cairo_pattern_set_filter(cairo_get_source(cr), CAIRO_FILTER_NEAREST); + } + + cairo_paint(cr); + + cairo_restore(cr); + } + } +}