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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 _VCLCANVAS_CANVASBITMAPHELPER_HXX_
21 : : #define _VCLCANVAS_CANVASBITMAPHELPER_HXX_
22 : :
23 : : #include <canvashelper.hxx>
24 : : #include <canvas/vclwrapper.hxx>
25 : :
26 : : #include <vcl/bitmapex.hxx>
27 : :
28 : : #include "bitmapbackbuffer.hxx"
29 : : #include "spritecanvas.hxx"
30 : :
31 : :
32 : : namespace vclcanvas
33 : : {
34 : : /** Helper class for basic canvasbitmap functionality. Extends
35 : : CanvasHelper with some CanvasBitmap specialities, such as alpha
36 : : support.
37 : :
38 : : Note that a plain CanvasHelper, although it does support the
39 : : XBitmap interface, has no provision for alpha channel on VCL
40 : : (at least no efficient one. If the alpha VDev one day gets
41 : : part of SAL, we might change that).
42 : : */
43 : 0 : class CanvasBitmapHelper : public CanvasHelper
44 : : {
45 : : public:
46 : : CanvasBitmapHelper();
47 : :
48 : : /** Set a new bitmap on this helper.
49 : :
50 : : This method late-initializes the bitmap canvas helper,
51 : : providing it with the necessary device and output
52 : : objects. The internally stored bitmap representation is
53 : : updated from the given bitmap, including any size
54 : : changes. Note that the CanvasHelper does <em>not</em> take
55 : : ownership of the SpriteCanvas object, nor does it perform
56 : : any reference counting. Thus, to prevent reference counted
57 : : objects from deletion, the user of this class is
58 : : responsible for holding ref-counted references to those
59 : : objects!
60 : :
61 : : @param rBitmap
62 : : Content of this bitmap is used as our new content (our
63 : : internal size is adapted to the size of the bitmap given)
64 : :
65 : : @param rDevice
66 : : Reference device for this canvas bitmap
67 : :
68 : : @param rOutDevProvider
69 : : Reference output device. Used to create matching bitmap.
70 : : */
71 : : void init( const BitmapEx& rBitmap,
72 : : ::com::sun::star::rendering::XGraphicDevice& rDevice,
73 : : const OutDevProviderSharedPtr& rOutDevProvider );
74 : :
75 : :
76 : : // Overridden CanvasHelper functionality
77 : : // =====================================
78 : :
79 : : void disposing();
80 : :
81 : : void clear();
82 : :
83 : : ::com::sun::star::geometry::IntegerSize2D getSize();
84 : :
85 : : ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XBitmapCanvas > queryBitmapCanvas();
86 : :
87 : : ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XBitmap >
88 : : getScaledBitmap( const ::com::sun::star::geometry::RealSize2D& newSize,
89 : : sal_Bool beFast );
90 : :
91 : : ::com::sun::star::uno::Sequence< sal_Int8 >
92 : : getData( ::com::sun::star::rendering::IntegerBitmapLayout& bitmapLayout,
93 : : const ::com::sun::star::geometry::IntegerRectangle2D& rect );
94 : :
95 : : void setData( const ::com::sun::star::uno::Sequence< sal_Int8 >& data,
96 : : const ::com::sun::star::rendering::IntegerBitmapLayout& bitmapLayout,
97 : : const ::com::sun::star::geometry::IntegerRectangle2D& rect );
98 : :
99 : : void setPixel( const ::com::sun::star::uno::Sequence< sal_Int8 >& color,
100 : : const ::com::sun::star::rendering::IntegerBitmapLayout& bitmapLayout,
101 : : const ::com::sun::star::geometry::IntegerPoint2D& pos );
102 : :
103 : : ::com::sun::star::uno::Sequence< sal_Int8 >
104 : : getPixel( ::com::sun::star::rendering::IntegerBitmapLayout& bitmapLayout,
105 : : const ::com::sun::star::geometry::IntegerPoint2D& pos );
106 : :
107 : : ::com::sun::star::rendering::IntegerBitmapLayout getMemoryLayout();
108 : :
109 : : /// @internal
110 : : BitmapEx getBitmap() const;
111 : :
112 : : private:
113 : :
114 : : void setBitmap( const BitmapEx& rBitmap );
115 : :
116 : : BitmapBackBufferSharedPtr mpBackBuffer;
117 : : OutDevProviderSharedPtr mpOutDevReference;
118 : : };
119 : : }
120 : :
121 : : #endif /* _VCLCANVAS_CANVASBITMAPHELPER_HXX_ */
122 : :
123 : : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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