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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 : #ifndef INCLUDED_OOX_HELPER_GRAPHICHELPER_HXX
21 : #define INCLUDED_OOX_HELPER_GRAPHICHELPER_HXX
22 :
23 : #include <deque>
24 : #include <map>
25 : #include <rtl/ustring.hxx>
26 : #include <com/sun/star/awt/DeviceInfo.hpp>
27 : #include <com/sun/star/drawing/FillStyle.hpp>
28 : #include <com/sun/star/uno/Reference.hxx>
29 : #include <oox/helper/binarystreambase.hxx>
30 : #include <oox/helper/storagebase.hxx>
31 :
32 : struct WMF_EXTERNALHEADER;
33 :
34 : namespace com { namespace sun { namespace star {
35 : namespace awt { struct Point; }
36 : namespace awt { struct Size; }
37 : namespace awt { class XUnitConversion; }
38 : namespace io { class XInputStream; }
39 : namespace frame { class XFrame; }
40 : namespace graphic { class XGraphic; }
41 : namespace graphic { class XGraphicObject; }
42 : namespace graphic { class XGraphicProvider; }
43 : namespace uno { class XComponentContext; }
44 : } } }
45 :
46 : namespace oox {
47 :
48 :
49 :
50 : /** Provides helper functions for colors, device measurement conversion,
51 : graphics, and graphic objects handling.
52 :
53 : All createGraphicObject() and importGraphicObject() functions create
54 : persistent graphic objects internally and store them in an internal
55 : container to prevent their early destruction. This makes it possible to use
56 : the returned URL of the graphic object in any way (e.g. insert it into a
57 : property map) without needing to store it immediately at an object that
58 : resolves the graphic object from the passed URL and thus prevents it from
59 : being destroyed.
60 : */
61 : class OOX_DLLPUBLIC GraphicHelper
62 : {
63 : public:
64 : explicit GraphicHelper(
65 : const ::com::sun::star::uno::Reference< ::com::sun::star::uno::XComponentContext >& rxContext,
66 : const ::com::sun::star::uno::Reference< ::com::sun::star::frame::XFrame >& rxTargetFrame,
67 : const StorageRef& rxStorage );
68 : virtual ~GraphicHelper();
69 :
70 : // System colors and predefined colors ------------------------------------
71 :
72 : /** Returns a system color specified by the passed XML token identifier. */
73 : sal_Int32 getSystemColor( sal_Int32 nToken, sal_Int32 nDefaultRgb = API_RGB_TRANSPARENT ) const;
74 : /** Derived classes may implement to resolve a scheme color from the passed XML token identifier. */
75 : virtual sal_Int32 getSchemeColor( sal_Int32 nToken ) const;
76 : /** Derived classes may implement to resolve a palette index to an RGB color. */
77 : virtual sal_Int32 getPaletteColor( sal_Int32 nPaletteIdx ) const;
78 :
79 : virtual sal_Int32 getDefaultChartAreaFillStyle() const;
80 :
81 : // Device info and device dependent unit conversion -----------------------
82 :
83 : /** Returns information about the output device. */
84 145 : const ::com::sun::star::awt::DeviceInfo& getDeviceInfo() const { return maDeviceInfo;}
85 :
86 : /** Converts the passed value from horizontal screen pixels to 1/100 mm. */
87 : sal_Int32 convertScreenPixelXToHmm( double fPixelX ) const;
88 : /** Converts the passed value from vertical screen pixels to 1/100 mm. */
89 : sal_Int32 convertScreenPixelYToHmm( double fPixelY ) const;
90 : /** Converts the passed size from screen pixels to 1/100 mm. */
91 : ::com::sun::star::awt::Size convertScreenPixelToHmm( const ::com::sun::star::awt::Size& rPixel ) const;
92 :
93 : /** Converts the passed value from 1/100 mm to horizontal screen pixels. */
94 : double convertHmmToScreenPixelX( sal_Int32 nHmmX ) const;
95 : /** Converts the passed value from 1/100 mm to vertical screen pixels. */
96 : double convertHmmToScreenPixelY( sal_Int32 nHmmY ) const;
97 : /** Converts the passed point from 1/100 mm to screen pixels. */
98 : ::com::sun::star::awt::Point convertHmmToScreenPixel( const ::com::sun::star::awt::Point& rHmm ) const;
99 : /** Converts the passed size from 1/100 mm to screen pixels. */
100 : ::com::sun::star::awt::Size convertHmmToScreenPixel( const ::com::sun::star::awt::Size& rHmm ) const;
101 :
102 : /** Converts the passed point from 1/100 mm to AppFont units. */
103 : ::com::sun::star::awt::Point convertHmmToAppFont( const ::com::sun::star::awt::Point& rHmm ) const;
104 : /** Converts the passed size from 1/100 mm to AppFont units. */
105 : ::com::sun::star::awt::Size convertHmmToAppFont( const ::com::sun::star::awt::Size& rHmm ) const;
106 :
107 : // Graphics and graphic objects ------------------------------------------
108 :
109 : /** Imports a graphic from the passed input stream. */
110 : ::com::sun::star::uno::Reference< ::com::sun::star::graphic::XGraphic >
111 : importGraphic(
112 : const ::com::sun::star::uno::Reference< ::com::sun::star::io::XInputStream >& rxInStrm,
113 : const WMF_EXTERNALHEADER* pExtHeader = NULL ) const;
114 :
115 : /** Imports a graphic from the passed binary memory block. */
116 : ::com::sun::star::uno::Reference< ::com::sun::star::graphic::XGraphic >
117 : importGraphic( const StreamDataSequence& rGraphicData ) const;
118 :
119 : /** Imports a graphic from the storage stream with the passed path and name. */
120 : ::com::sun::star::uno::Reference< ::com::sun::star::graphic::XGraphic >
121 : importEmbeddedGraphic(
122 : const OUString& rStreamName,
123 : const WMF_EXTERNALHEADER* pExtHeader = NULL ) const;
124 :
125 : /** Creates a persistent graphic object from the passed graphic.
126 : @return The URL of the created and internally cached graphic object. */
127 : OUString createGraphicObject(
128 : const ::com::sun::star::uno::Reference< ::com::sun::star::graphic::XGraphic >& rxGraphic ) const;
129 :
130 : /** Creates a persistent graphic object from the passed input stream.
131 : @return The URL of the created and internally cached graphic object. */
132 : OUString importGraphicObject(
133 : const ::com::sun::star::uno::Reference< ::com::sun::star::io::XInputStream >& rxInStrm,
134 : const WMF_EXTERNALHEADER* pExtHeader = NULL ) const;
135 :
136 : /** Creates a persistent graphic object from the passed binary memory block.
137 : @return The URL of the created and internally cached graphic object. */
138 : OUString importGraphicObject( const StreamDataSequence& rGraphicData ) const;
139 :
140 : /** Imports a graphic object from the storage stream with the passed path and name.
141 : @return The URL of the created and internally cached graphic object. */
142 : OUString importEmbeddedGraphicObject( const OUString& rStreamName ) const;
143 :
144 : /** calculates the orignal size of a graphic which is necessary to be able to calculate cropping values
145 : @return The original Graphic size in 100thmm */
146 : ::com::sun::star::awt::Size getOriginalSize( const ::com::sun::star::uno::Reference< ::com::sun::star::graphic::XGraphic >& rxGraphic ) const;
147 :
148 :
149 : private:
150 : typedef ::std::map< sal_Int32, sal_Int32 > SystemPalette;
151 : typedef ::std::deque< ::com::sun::star::uno::Reference< ::com::sun::star::graphic::XGraphicObject > > GraphicObjectDeque;
152 : typedef ::std::map< OUString, ::com::sun::star::uno::Reference< ::com::sun::star::graphic::XGraphic > > EmbeddedGraphicMap;
153 :
154 : ::com::sun::star::uno::Reference< ::com::sun::star::uno::XComponentContext > mxContext;
155 : ::com::sun::star::uno::Reference< ::com::sun::star::graphic::XGraphicProvider > mxGraphicProvider;
156 : ::com::sun::star::uno::Reference< ::com::sun::star::awt::XUnitConversion > mxUnitConversion;
157 : ::com::sun::star::awt::DeviceInfo maDeviceInfo; ///< Current output device info.
158 : SystemPalette maSystemPalette; ///< Maps system colors (XML tokens) to RGB color values.
159 : StorageRef mxStorage; ///< Storage containing embedded graphics.
160 : mutable GraphicObjectDeque maGraphicObjects; ///< Caches all created graphic objects to keep them alive.
161 : mutable EmbeddedGraphicMap maEmbeddedGraphics; ///< Maps all embedded graphics by their storage path.
162 : const OUString maGraphicObjScheme; ///< The URL scheme name for graphic objects.
163 : double mfPixelPerHmmX; ///< Number of screen pixels per 1/100 mm in X direction.
164 : double mfPixelPerHmmY; ///< Number of screen pixels per 1/100 mm in Y direction.
165 : };
166 :
167 :
168 :
169 : } // namespace oox
170 :
171 : #endif
172 :
173 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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