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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_CANVAS_SOURCE_CAIRO_CAIRO_CANVASHELPER_HXX
21 : #define INCLUDED_CANVAS_SOURCE_CAIRO_CAIRO_CANVASHELPER_HXX
22 :
23 : #include <com/sun/star/rendering/XCanvas.hpp>
24 : #include <com/sun/star/rendering/XBitmapCanvas.hpp>
25 : #include <com/sun/star/rendering/XIntegerBitmap.hpp>
26 :
27 : #include <basegfx/vector/b2isize.hxx>
28 : #include <basegfx/vector/b2dsize.hxx>
29 : #include <com/sun/star/rendering/XLinePolyPolygon2D.hpp>
30 :
31 : #include <vcl/vclptr.hxx>
32 : #include <vcl/virdev.hxx>
33 : #include <boost/utility.hpp>
34 :
35 : #include <vcl/cairo.hxx>
36 : #include "cairo_surfaceprovider.hxx"
37 :
38 : class VirtualDevice;
39 :
40 : namespace basegfx {
41 : class B2DPolyPolygon;
42 : }
43 :
44 : namespace cairocanvas
45 : {
46 : class SpriteCanvas;
47 :
48 : enum Operation {
49 : Stroke,
50 : Fill,
51 : Clip
52 : };
53 :
54 5 : class CanvasHelper : private ::boost::noncopyable
55 : {
56 : public:
57 : CanvasHelper();
58 :
59 : /// Release all references
60 : void disposing();
61 :
62 : /** Initialize canvas helper
63 :
64 : This method late-initializes the canvas helper, providing
65 : it with the necessary device and size. Note that the
66 : CanvasHelper does <em>not</em> take ownership of the
67 : passed rDevice reference, nor does it perform any
68 : reference counting. Thus, to prevent the reference counted
69 : SpriteCanvas object from deletion, the user of this class
70 : is responsible for holding ref-counted references itself!
71 :
72 : @param rSizePixel
73 : Size of the output surface in pixel.
74 :
75 : @param rDevice
76 : Reference device this canvas is associated with
77 :
78 : */
79 : void init( const ::basegfx::B2ISize& rSizePixel,
80 : SurfaceProvider& rSurfaceProvider,
81 : ::com::sun::star::rendering::XGraphicDevice* pDevice );
82 :
83 : void setSize( const ::basegfx::B2ISize& rSize );
84 : void setSurface( const ::cairo::SurfaceSharedPtr& pSurface, bool bHasAlpha );
85 :
86 : // CanvasHelper functionality
87 : // ==========================
88 :
89 : // XCanvas (only providing, not implementing the
90 : // interface. Also note subtle method parameter differences)
91 : void clear();
92 : void drawLine( const ::com::sun::star::rendering::XCanvas* pCanvas,
93 : const ::com::sun::star::geometry::RealPoint2D& aStartPoint,
94 : const ::com::sun::star::geometry::RealPoint2D& aEndPoint,
95 : const ::com::sun::star::rendering::ViewState& viewState,
96 : const ::com::sun::star::rendering::RenderState& renderState );
97 : void drawBezier( const ::com::sun::star::rendering::XCanvas* pCanvas,
98 : const ::com::sun::star::geometry::RealBezierSegment2D& aBezierSegment,
99 : const ::com::sun::star::geometry::RealPoint2D& aEndPoint,
100 : const ::com::sun::star::rendering::ViewState& viewState,
101 : const ::com::sun::star::rendering::RenderState& renderState );
102 : ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XCachedPrimitive >
103 : drawPolyPolygon( const ::com::sun::star::rendering::XCanvas* pCanvas,
104 : const ::com::sun::star::uno::Reference<
105 : ::com::sun::star::rendering::XPolyPolygon2D >& xPolyPolygon,
106 : const ::com::sun::star::rendering::ViewState& viewState,
107 : const ::com::sun::star::rendering::RenderState& renderState );
108 : ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XCachedPrimitive >
109 : strokePolyPolygon( const ::com::sun::star::rendering::XCanvas* pCanvas,
110 : const ::com::sun::star::uno::Reference<
111 : ::com::sun::star::rendering::XPolyPolygon2D >& xPolyPolygon,
112 : const ::com::sun::star::rendering::ViewState& viewState,
113 : const ::com::sun::star::rendering::RenderState& renderState,
114 : const ::com::sun::star::rendering::StrokeAttributes& strokeAttributes );
115 : ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XCachedPrimitive >
116 : strokeTexturedPolyPolygon( const ::com::sun::star::rendering::XCanvas* pCanvas,
117 : const ::com::sun::star::uno::Reference<
118 : ::com::sun::star::rendering::XPolyPolygon2D >& xPolyPolygon,
119 : const ::com::sun::star::rendering::ViewState& viewState,
120 : const ::com::sun::star::rendering::RenderState& renderState,
121 : const ::com::sun::star::uno::Sequence<
122 : ::com::sun::star::rendering::Texture >& textures,
123 : const ::com::sun::star::rendering::StrokeAttributes& strokeAttributes );
124 : ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XCachedPrimitive >
125 : strokeTextureMappedPolyPolygon( const ::com::sun::star::rendering::XCanvas* pCanvas,
126 : const ::com::sun::star::uno::Reference<
127 : ::com::sun::star::rendering::XPolyPolygon2D >& xPolyPolygon,
128 : const ::com::sun::star::rendering::ViewState& viewState,
129 : const ::com::sun::star::rendering::RenderState& renderState,
130 : const ::com::sun::star::uno::Sequence<
131 : ::com::sun::star::rendering::Texture >& textures,
132 : const ::com::sun::star::uno::Reference<
133 : ::com::sun::star::geometry::XMapping2D >& xMapping,
134 : const ::com::sun::star::rendering::StrokeAttributes& strokeAttributes );
135 : ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XPolyPolygon2D >
136 : queryStrokeShapes( const ::com::sun::star::rendering::XCanvas* pCanvas,
137 : const ::com::sun::star::uno::Reference<
138 : ::com::sun::star::rendering::XPolyPolygon2D >& xPolyPolygon,
139 : const ::com::sun::star::rendering::ViewState& viewState,
140 : const ::com::sun::star::rendering::RenderState& renderState,
141 : const ::com::sun::star::rendering::StrokeAttributes& strokeAttributes );
142 : ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XCachedPrimitive >
143 : fillPolyPolygon( const ::com::sun::star::rendering::XCanvas* pCanvas,
144 : const ::com::sun::star::uno::Reference<
145 : ::com::sun::star::rendering::XPolyPolygon2D >& xPolyPolygon,
146 : const ::com::sun::star::rendering::ViewState& viewState,
147 : const ::com::sun::star::rendering::RenderState& renderState );
148 : ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XCachedPrimitive >
149 : fillTexturedPolyPolygon( const ::com::sun::star::rendering::XCanvas* pCanvas,
150 : const ::com::sun::star::uno::Reference<
151 : ::com::sun::star::rendering::XPolyPolygon2D >& xPolyPolygon,
152 : const ::com::sun::star::rendering::ViewState& viewState,
153 : const ::com::sun::star::rendering::RenderState& renderState,
154 : const ::com::sun::star::uno::Sequence<
155 : ::com::sun::star::rendering::Texture >& textures );
156 : ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XCachedPrimitive >
157 : fillTextureMappedPolyPolygon( const ::com::sun::star::rendering::XCanvas* pCanvas,
158 : const ::com::sun::star::uno::Reference<
159 : ::com::sun::star::rendering::XPolyPolygon2D >& xPolyPolygon,
160 : const ::com::sun::star::rendering::ViewState& viewState,
161 : const ::com::sun::star::rendering::RenderState& renderState,
162 : const ::com::sun::star::uno::Sequence<
163 : ::com::sun::star::rendering::Texture >& textures,
164 : const ::com::sun::star::uno::Reference<
165 : ::com::sun::star::geometry::XMapping2D >& xMapping );
166 :
167 : ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XCanvasFont > SAL_CALL
168 : createFont( const ::com::sun::star::rendering::XCanvas* pCanvas,
169 : const ::com::sun::star::rendering::FontRequest& fontRequest,
170 : const ::com::sun::star::uno::Sequence<
171 : ::com::sun::star::beans::PropertyValue >& extraFontProperties,
172 : const ::com::sun::star::geometry::Matrix2D& fontMatrix );
173 :
174 : ::com::sun::star::uno::Sequence< ::com::sun::star::rendering::FontInfo >
175 : queryAvailableFonts( const ::com::sun::star::rendering::XCanvas* pCanvas,
176 : const ::com::sun::star::rendering::FontInfo& aFilter,
177 : const ::com::sun::star::uno::Sequence<
178 : ::com::sun::star::beans::PropertyValue >& aFontProperties );
179 :
180 : ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XCachedPrimitive >
181 : drawText( const ::com::sun::star::rendering::XCanvas* pCanvas,
182 : const ::com::sun::star::rendering::StringContext& text,
183 : const ::com::sun::star::uno::Reference<
184 : ::com::sun::star::rendering::XCanvasFont >& xFont,
185 : const ::com::sun::star::rendering::ViewState& viewState,
186 : const ::com::sun::star::rendering::RenderState& renderState,
187 : sal_Int8 textDirection );
188 :
189 : ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XCachedPrimitive >
190 : drawTextLayout( const ::com::sun::star::rendering::XCanvas* pCanvas,
191 : const ::com::sun::star::uno::Reference<
192 : ::com::sun::star::rendering::XTextLayout >& laidOutText,
193 : const ::com::sun::star::rendering::ViewState& viewState,
194 : const ::com::sun::star::rendering::RenderState& renderState );
195 :
196 : ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XCachedPrimitive >
197 : drawBitmap( const ::com::sun::star::rendering::XCanvas* pCanvas,
198 : const ::com::sun::star::uno::Reference<
199 : ::com::sun::star::rendering::XBitmap >& xBitmap,
200 : const ::com::sun::star::rendering::ViewState& viewState,
201 : const ::com::sun::star::rendering::RenderState& renderState );
202 : ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XCachedPrimitive >
203 : drawBitmapModulated( const ::com::sun::star::rendering::XCanvas* pCanvas,
204 : const ::com::sun::star::uno::Reference<
205 : ::com::sun::star::rendering::XBitmap >& xBitmap,
206 : const ::com::sun::star::rendering::ViewState& viewState,
207 : const ::com::sun::star::rendering::RenderState& renderState );
208 : ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XGraphicDevice >
209 36 : getDevice() { return css::uno::Reference< css::rendering::XGraphicDevice >(mpDevice); }
210 :
211 : // BitmapCanvasHelper functionality
212 : // ================================
213 :
214 : ::com::sun::star::geometry::IntegerSize2D getSize();
215 :
216 : ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XBitmap >
217 : getScaledBitmap( const ::com::sun::star::geometry::RealSize2D& newSize,
218 : bool beFast );
219 :
220 : ::com::sun::star::uno::Sequence< sal_Int8 >
221 : getData( ::com::sun::star::rendering::IntegerBitmapLayout& bitmapLayout,
222 : const ::com::sun::star::geometry::IntegerRectangle2D& rect );
223 :
224 : ::com::sun::star::uno::Sequence< sal_Int8 >
225 : getPixel( ::com::sun::star::rendering::IntegerBitmapLayout& bitmapLayout,
226 : const ::com::sun::star::geometry::IntegerPoint2D& pos );
227 :
228 : ::com::sun::star::rendering::IntegerBitmapLayout getMemoryLayout();
229 :
230 : bool hasAlpha() const { return mbHaveAlpha; }
231 :
232 : enum ColorType
233 : {
234 : LINE_COLOR, FILL_COLOR, TEXT_COLOR, IGNORE_COLOR
235 : };
236 :
237 : void doPolyPolygonPath( const ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XPolyPolygon2D >& xPolyPolygon,
238 : Operation aOperation,
239 : bool bNoLineJoin = false,
240 : const ::com::sun::star::uno::Sequence< ::com::sun::star::rendering::Texture >* pTextures=NULL,
241 : cairo_t* pCairo=NULL ) const;
242 :
243 : ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XCachedPrimitive > implDrawBitmapSurface(
244 : const ::com::sun::star::rendering::XCanvas* pCanvas,
245 : const ::cairo::SurfaceSharedPtr& pSurface,
246 : const ::com::sun::star::rendering::ViewState& viewState,
247 : const ::com::sun::star::rendering::RenderState& renderState,
248 : const ::com::sun::star::geometry::IntegerSize2D& rSize,
249 : bool bModulateColors,
250 : bool bHasAlpha );
251 :
252 : bool repaint( const ::cairo::SurfaceSharedPtr& pSurface,
253 : const ::com::sun::star::rendering::ViewState& viewState,
254 : const ::com::sun::star::rendering::RenderState& renderState );
255 :
256 : protected:
257 : /** Surface provider
258 :
259 : Deliberately not a refcounted reference, because of
260 : potential circular references for canvas. Provides us with
261 : our output surface and associated functionality.
262 : */
263 : SurfaceProvider* mpSurfaceProvider;
264 :
265 : /** Phyical output device
266 :
267 : Deliberately not a refcounted reference, because of
268 : potential circular references for spritecanvas.
269 : */
270 : ::com::sun::star::rendering::XGraphicDevice* mpDevice;
271 :
272 : private:
273 :
274 : VclPtr<VirtualDevice> mpVirtualDevice;
275 :
276 : void useStates( const ::com::sun::star::rendering::ViewState& viewState,
277 : const ::com::sun::star::rendering::RenderState& renderState,
278 : bool setColor );
279 :
280 : com::sun::star::rendering::IntegerBitmapLayout impl_getMemoryLayout( sal_Int32 nWidth, sal_Int32 nHeight );
281 :
282 : /// When true, content is able to represent alpha
283 : bool mbHaveAlpha;
284 :
285 : ::cairo::CairoSharedPtr mpCairo;
286 : ::cairo::SurfaceSharedPtr mpSurface;
287 : ::basegfx::B2ISize maSize;
288 :
289 : void clip_cairo_from_dev(::OutputDevice& rOutDev);
290 :
291 : };
292 :
293 : /// also needed from SpriteHelper
294 : void doPolyPolygonImplementation( ::basegfx::B2DPolyPolygon aPolyPolygon,
295 : Operation aOperation,
296 : cairo_t* pCairo,
297 : const ::com::sun::star::uno::Sequence< ::com::sun::star::rendering::Texture >* pTextures,
298 : const SurfaceProviderRef& pDevice,
299 : ::com::sun::star::rendering::FillRule eFillrule );
300 : }
301 :
302 : #endif // INCLUDED_CANVAS_SOURCE_CAIRO_CAIRO_CANVASHELPER_HXX
303 :
304 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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