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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 _CPPCANVAS_RENDERER_HXX
21 : #define _CPPCANVAS_RENDERER_HXX
22 :
23 : #include <sal/types.h>
24 : #include <rtl/ustring.hxx>
25 :
26 : #include <boost/shared_ptr.hpp>
27 : #include <boost/optional.hpp>
28 : #include <basegfx/matrix/b2dhommatrix.hxx>
29 : #include <cppcanvas/canvasgraphic.hxx>
30 : #include <cppcanvas/color.hxx>
31 :
32 : namespace basegfx
33 : {
34 : class B2DRange;
35 : }
36 :
37 : /* Definition of Renderer interface */
38 :
39 : namespace cppcanvas
40 : {
41 :
42 0 : class Renderer : public virtual CanvasGraphic
43 : {
44 : public:
45 : /** Render subset of metafile to given canvas
46 :
47 : This method renders the given subset of the content to the
48 : associated canvas.
49 :
50 : @param nStartIndex
51 : The index of the first action to be rendered (the indices
52 : correspond roughly to the action indices of the
53 : originating GDIMetaFile. Note, although, that certain
54 : actions, e.g. text, accounts for more than one index: a
55 : text produces as many addressable indices as it has
56 : characters).
57 :
58 : @param nEndIndex
59 : The index of the first action _not_ painted anymore,
60 : i.e. the action after the last action rendered (the
61 : indices correspond roughly to the action indices of the
62 : originating GDIMetaFile. Note, although, that certain
63 : actions, e.g. text, accounts for more than one index: a
64 : text produces as many addressable indices as it has
65 : characters).
66 :
67 : @return whether the rendering finished successfully.
68 : */
69 : virtual bool drawSubset( sal_Int32 nStartIndex,
70 : sal_Int32 nEndIndex ) const = 0;
71 :
72 : /** Query bounding box of metafile subset
73 :
74 : This method queries the actual bounding box of the given
75 : subset, when rendered on the associated canvas.
76 :
77 : @param nStartIndex
78 : The index of the first action to be rendered (the indices
79 : correspond roughly to the action indices of the
80 : originating GDIMetaFile. Note, although, that certain
81 : actions, e.g. text, accounts for more than one index: a
82 : text produces as many addressable indices as it has
83 : characters).
84 :
85 : @param nEndIndex
86 : The index of the first action _not_ painted anymore,
87 : i.e. the action after the last action rendered (the
88 : indices correspond roughly to the action indices of the
89 : originating GDIMetaFile. Note, although, that certain
90 : actions, e.g. text, accounts for more than one index: a
91 : text produces as many addressable indices as it has
92 : characters).
93 :
94 : @return the bounding box of the specified subset
95 : */
96 : virtual ::basegfx::B2DRange getSubsetArea( sal_Int32 nStartIndex,
97 : sal_Int32 nEndIndex ) const = 0;
98 :
99 : /** Parameters for the Renderer
100 : */
101 0 : struct Parameters
102 : {
103 : /// Optionally forces the fill color attribute for all actions
104 : ::boost::optional< Color::IntSRGBA > maFillColor;
105 :
106 : /// Optionally forces the line color attribute for all actions
107 : ::boost::optional< Color::IntSRGBA > maLineColor;
108 :
109 : /// Optionally forces the text color attribute for all actions
110 : ::boost::optional< Color::IntSRGBA > maTextColor;
111 :
112 : /// Optionally forces the given fontname for all text actions
113 : ::boost::optional< OUString > maFontName;
114 :
115 : /** Optionally transforms all text output actions with the
116 : given matrix (in addition to the overall canvas
117 : transformation).
118 :
119 : Note that the matrix given here is applied to the unit
120 : rect coordinate system, i.e. the metafile is assumed
121 : to be contained in the unit rect.
122 : */
123 : ::boost::optional< ::basegfx::B2DHomMatrix > maTextTransformation;
124 :
125 : /// Optionally forces the given font weight for all text actions
126 : ::boost::optional< sal_Int8 > maFontWeight;
127 :
128 : /// Optionally forces the given font letter form (italics etc.) for all text actions
129 : ::boost::optional< sal_Int8 > maFontLetterForm;
130 :
131 : /// Optionally forces the given font proportion (condensed, monospaced etc.) for all text actions
132 : ::boost::optional< sal_Int8 > maFontProportion;
133 :
134 : /// Optionally forces underlining for all text actions
135 : ::boost::optional< bool > maFontUnderline;
136 : };
137 : };
138 :
139 : typedef ::boost::shared_ptr< ::cppcanvas::Renderer > RendererSharedPtr;
140 : }
141 :
142 : #endif /* _CPPCANVAS_RENDERER_HXX */
143 :
144 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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