cppcanvas/source/uno/uno_mtfrenderer.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  */
   9
  10 #include <cppcanvas/vclfactory.hxx>
  11 #include <o3tl/any.hxx>
  12 #include <com/sun/star/rendering/XMtfRenderer.hpp>
  13 #include <com/sun/star/rendering/XBitmapCanvas.hpp>
  14 #include <com/sun/star/uno/XComponentContext.hpp>
  15 #include <com/sun/star/beans/XFastPropertySet.hpp>
  16 #include <cppuhelper/compbase.hxx>
  17 #include <cppuhelper/basemutex.hxx>
  18 #include <vcl/gdimtf.hxx>
  19
  20 using namespace ::com::sun::star;
  21
  22 typedef cppu::WeakComponentImplHelper<css::rendering::XMtfRenderer, css::beans::XFastPropertySet> MtfRendererBase;
  23
  24 namespace {
  25
  26 class MtfRenderer : private cppu::BaseMutex, public MtfRendererBase
  27 {
  28 public:
  29     MtfRenderer (css::uno::Sequence<css::uno::Any> const& args,
  30                  css::uno::Reference<css::uno::XComponentContext> const&);
  31
  32     // XMtfRenderer iface
  33     void SAL_CALL setMetafile (const css::uno::Sequence< sal_Int8 >& rMtf) override;
  34     void SAL_CALL draw (double fScaleX, double fScaleY) override;
  35
  36     // XFastPropertySet
  37     // setFastPropertyValue (0, GDIMetaFile*) is used to speedup the rendering
  38     virtual css::uno::Any SAL_CALL getFastPropertyValue(sal_Int32 /*nHandle*/) override { return css::uno::Any(); }
  39     virtual void SAL_CALL setFastPropertyValue(sal_Int32 nHandle, const css::uno::Any&) override;
  40
  41 private:
  42     GDIMetaFile* mpMetafile;
  43     css::uno::Reference<css::rendering::XBitmapCanvas> mxCanvas;
  44 };
  45
  46 void MtfRenderer::setMetafile (const uno::Sequence< sal_Int8 >& /*rMtf*/)
  47 {
  48         // printf ("MtfRenderer::setMetafile unimplemented, use fast property set or implement me\n");
  49 }
  50
  51 void MtfRenderer::draw (double fScaleX, double fScaleY)
  52 {
  53     if (mpMetafile && mxCanvas) {
  54         cppcanvas::BitmapCanvasSharedPtr canvas = cppcanvas::VCLFactory::createBitmapCanvas (mxCanvas);
  55         cppcanvas::RendererSharedPtr renderer = cppcanvas::VCLFactory::createRenderer (canvas, *mpMetafile, cppcanvas::Renderer::Parameters ());
  56         ::basegfx::B2DHomMatrix aMatrix;
  57         aMatrix.scale( fScaleX, fScaleY );
  58         canvas->setTransformation( aMatrix );
  59         renderer->draw ();
  60     }
  61 }
  62
  63 void MtfRenderer::setFastPropertyValue( sal_Int32 nHandle, const uno::Any& aAny)
  64 {
  65     if (nHandle == 0) {
  66         mpMetafile = reinterpret_cast<GDIMetaFile*>( *o3tl::doAccess<sal_Int64>(aAny) );
  67     }
  68 }
  69
  70 MtfRenderer::MtfRenderer (uno::Sequence<uno::Any> const& aArgs, uno::Reference<uno::XComponentContext> const&) : MtfRendererBase (m_aMutex), mpMetafile (nullptr)
  71 {
  72     if( aArgs.getLength() == 1 ) {
  73         aArgs[0] >>= mxCanvas;
  74     }
  75 }
  76
  77 } // namespace
  78
  79 extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface*
  80 com_sun_star_comp_rendering_MtfRenderer_get_implementation(
  81     css::uno::XComponentContext* context, css::uno::Sequence<css::uno::Any> const& args)
  82 {
  83     return cppu::acquire(new MtfRenderer(args, context));
  84 }
  85
  86 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */