forms/source/component/imgprod.hxx

   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  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #pragma once
  21
  22 #include <tools/link.hxx>
  23 #include <com/sun/star/awt/XImageConsumer.hpp>
  24 #include <com/sun/star/awt/XImageProducer.hpp>
  25 #include <com/sun/star/lang/XInitialization.hpp>
  26 #include <com/sun/star/lang/XServiceInfo.hpp>
  27 #include <cppuhelper/weak.hxx>
  28 #include <vcl/graph.hxx>
  29 #include <memory>
  30 #include <optional>
  31 #include <vector>
  32
  33
  34 class SvStream;
  35 namespace com::sun::star::io { class XInputStream; }
  36
  37
  38 class ImageProducer :   public css::awt::XImageProducer,
  39                         public css::lang::XInitialization,
  40                         public css::lang::XServiceInfo,
  41                         public ::cppu::OWeakObject
  42 {
  43 private:
  44
  45     typedef std::vector< css::uno::Reference< css::awt::XImageConsumer > > ConsumerList_t;
  46
  47     OUString        maURL;
  48     ConsumerList_t  maConsList;
  49     std::optional<Graphic>
  50                     moGraphic;
  51     std::unique_ptr<SvStream>
  52                     mpStm;
  53     sal_uInt32      mnTransIndex;
  54     bool            mbConsInit;
  55     Link<Graphic*,void> maDoneHdl;
  56
  57     bool            ImplImportGraphic( Graphic& rGraphic );
  58     void            ImplUpdateData( const Graphic& rGraphic );
  59     void            ImplInitConsumer( const Graphic& rGraphic );
  60     void            ImplUpdateConsumer( const Graphic& rGraphic );
  61
  62 public:
  63
  64                     ImageProducer();
  65                     virtual ~ImageProducer() override;
  66
  67     void            SetImage( const OUString& rPath );
  68     void            SetImage( SvStream& rStm );
  69
  70     void            NewDataAvailable();
  71
  72     void            SetDoneHdl( const Link<Graphic*,void>& i_rHdl ) { maDoneHdl = i_rHdl; }
  73
  74     // css::uno::XInterface
  75     css::uno::Any   SAL_CALL queryInterface( const css::uno::Type & rType ) override;
  76     void            SAL_CALL acquire() noexcept override  { OWeakObject::acquire(); }
  77     void            SAL_CALL release() noexcept override  { OWeakObject::release(); }
  78
  79     // MT: ???
  80     void            setImage( css::uno::Reference< css::io::XInputStream > const & rStmRef );
  81
  82     // css::awt::XImageProducer
  83     void SAL_CALL addConsumer( const css::uno::Reference< css::awt::XImageConsumer >& rxConsumer ) override;
  84     void SAL_CALL removeConsumer( const css::uno::Reference< css::awt::XImageConsumer >& rxConsumer ) override;
  85     void SAL_CALL startProduction(  ) override;
  86
  87     // css::lang::XInitialization
  88     void SAL_CALL initialize( const css::uno::Sequence< css::uno::Any >& aArguments ) override;
  89
  90     OUString SAL_CALL getImplementationName() override;
  91     sal_Bool SAL_CALL supportsService(OUString const & ServiceName) override;
  92     css::uno::Sequence<OUString> SAL_CALL getSupportedServiceNames() override;
  93
  94 };
  95
  96 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */