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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 <boost/utility.hpp>
32 :
33 : #include "cairo_cairo.hxx"
34 : #include "cairo_surfaceprovider.hxx"
35 :
36 : class VirtualDevice;
37 :
38 : namespace basegfx {
39 : class B2DPolyPolygon;
40 : }
41 :
42 : namespace cairocanvas
43 : {
44 : class SpriteCanvas;
45 :
46 : enum Operation {
47 : Stroke,
48 : Fill,
49 : Clip
50 : };
51 :
52 0 : class CanvasHelper : private ::boost::noncopyable
53 : {
54 : public:
55 : CanvasHelper();
56 :
57 : /// Release all references
58 : void disposing();
59 :
60 : /** Initialize canvas helper
61 :
62 : This method late-initializes the canvas helper, providing
63 : it with the necessary device and size. Note that the
64 : CanvasHelper does <em>not</em> take ownership of the
65 : passed rDevice reference, nor does it perform any
66 : reference counting. Thus, to prevent the reference counted
67 : SpriteCanvas object from deletion, the user of this class
68 : is responsible for holding ref-counted references itself!
69 :
70 : @param rSizePixel
71 : Size of the output surface in pixel.
72 :
73 : @param rDevice
74 : Reference device this canvas is associated with
75 :
76 : */
77 : void init( const ::basegfx::B2ISize& rSizePixel,
78 : SurfaceProvider& rSurfaceProvider,
79 : ::com::sun::star::rendering::XGraphicDevice* pDevice );
80 :
81 : void setSize( const ::basegfx::B2ISize& rSize );
82 : void setSurface( const ::cairo::SurfaceSharedPtr& pSurface, bool bHasAlpha );
83 :
84 : // CanvasHelper functionality
85 : // ==========================
86 :
87 : // XCanvas (only providing, not implementing the
88 : // interface. Also note subtle method parameter differences)
89 : void clear();
90 : void drawPoint( const ::com::sun::star::rendering::XCanvas* pCanvas,
91 : const ::com::sun::star::geometry::RealPoint2D& aPoint,
92 : const ::com::sun::star::rendering::ViewState& viewState,
93 : const ::com::sun::star::rendering::RenderState& renderState );
94 : void drawLine( const ::com::sun::star::rendering::XCanvas* pCanvas,
95 : const ::com::sun::star::geometry::RealPoint2D& aStartPoint,
96 : const ::com::sun::star::geometry::RealPoint2D& aEndPoint,
97 : const ::com::sun::star::rendering::ViewState& viewState,
98 : const ::com::sun::star::rendering::RenderState& renderState );
99 : void drawBezier( const ::com::sun::star::rendering::XCanvas* pCanvas,
100 : const ::com::sun::star::geometry::RealBezierSegment2D& aBezierSegment,
101 : const ::com::sun::star::geometry::RealPoint2D& aEndPoint,
102 : const ::com::sun::star::rendering::ViewState& viewState,
103 : const ::com::sun::star::rendering::RenderState& renderState );
104 : ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XCachedPrimitive >
105 : drawPolyPolygon( const ::com::sun::star::rendering::XCanvas* pCanvas,
106 : const ::com::sun::star::uno::Reference<
107 : ::com::sun::star::rendering::XPolyPolygon2D >& xPolyPolygon,
108 : const ::com::sun::star::rendering::ViewState& viewState,
109 : const ::com::sun::star::rendering::RenderState& renderState );
110 : ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XCachedPrimitive >
111 : strokePolyPolygon( const ::com::sun::star::rendering::XCanvas* pCanvas,
112 : const ::com::sun::star::uno::Reference<
113 : ::com::sun::star::rendering::XPolyPolygon2D >& xPolyPolygon,
114 : const ::com::sun::star::rendering::ViewState& viewState,
115 : const ::com::sun::star::rendering::RenderState& renderState,
116 : const ::com::sun::star::rendering::StrokeAttributes& strokeAttributes );
117 : ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XCachedPrimitive >
118 : strokeTexturedPolyPolygon( const ::com::sun::star::rendering::XCanvas* pCanvas,
119 : const ::com::sun::star::uno::Reference<
120 : ::com::sun::star::rendering::XPolyPolygon2D >& xPolyPolygon,
121 : const ::com::sun::star::rendering::ViewState& viewState,
122 : const ::com::sun::star::rendering::RenderState& renderState,
123 : const ::com::sun::star::uno::Sequence<
124 : ::com::sun::star::rendering::Texture >& textures,
125 : const ::com::sun::star::rendering::StrokeAttributes& strokeAttributes );
126 : ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XCachedPrimitive >
127 : strokeTextureMappedPolyPolygon( const ::com::sun::star::rendering::XCanvas* pCanvas,
128 : const ::com::sun::star::uno::Reference<
129 : ::com::sun::star::rendering::XPolyPolygon2D >& xPolyPolygon,
130 : const ::com::sun::star::rendering::ViewState& viewState,
131 : const ::com::sun::star::rendering::RenderState& renderState,
132 : const ::com::sun::star::uno::Sequence<
133 : ::com::sun::star::rendering::Texture >& textures,
134 : const ::com::sun::star::uno::Reference<
135 : ::com::sun::star::geometry::XMapping2D >& xMapping,
136 : const ::com::sun::star::rendering::StrokeAttributes& strokeAttributes );
137 : ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XPolyPolygon2D >
138 : queryStrokeShapes( const ::com::sun::star::rendering::XCanvas* pCanvas,
139 : const ::com::sun::star::uno::Reference<
140 : ::com::sun::star::rendering::XPolyPolygon2D >& xPolyPolygon,
141 : const ::com::sun::star::rendering::ViewState& viewState,
142 : const ::com::sun::star::rendering::RenderState& renderState,
143 : const ::com::sun::star::rendering::StrokeAttributes& strokeAttributes );
144 : ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XCachedPrimitive >
145 : fillPolyPolygon( const ::com::sun::star::rendering::XCanvas* pCanvas,
146 : const ::com::sun::star::uno::Reference<
147 : ::com::sun::star::rendering::XPolyPolygon2D >& xPolyPolygon,
148 : const ::com::sun::star::rendering::ViewState& viewState,
149 : const ::com::sun::star::rendering::RenderState& renderState );
150 : ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XCachedPrimitive >
151 : fillTexturedPolyPolygon( const ::com::sun::star::rendering::XCanvas* pCanvas,
152 : const ::com::sun::star::uno::Reference<
153 : ::com::sun::star::rendering::XPolyPolygon2D >& xPolyPolygon,
154 : const ::com::sun::star::rendering::ViewState& viewState,
155 : const ::com::sun::star::rendering::RenderState& renderState,
156 : const ::com::sun::star::uno::Sequence<
157 : ::com::sun::star::rendering::Texture >& textures );
158 : ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XCachedPrimitive >
159 : fillTextureMappedPolyPolygon( const ::com::sun::star::rendering::XCanvas* pCanvas,
160 : const ::com::sun::star::uno::Reference<
161 : ::com::sun::star::rendering::XPolyPolygon2D >& xPolyPolygon,
162 : const ::com::sun::star::rendering::ViewState& viewState,
163 : const ::com::sun::star::rendering::RenderState& renderState,
164 : const ::com::sun::star::uno::Sequence<
165 : ::com::sun::star::rendering::Texture >& textures,
166 : const ::com::sun::star::uno::Reference<
167 : ::com::sun::star::geometry::XMapping2D >& xMapping );
168 :
169 : ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XCanvasFont > SAL_CALL
170 : createFont( const ::com::sun::star::rendering::XCanvas* pCanvas,
171 : const ::com::sun::star::rendering::FontRequest& fontRequest,
172 : const ::com::sun::star::uno::Sequence<
173 : ::com::sun::star::beans::PropertyValue >& extraFontProperties,
174 : const ::com::sun::star::geometry::Matrix2D& fontMatrix );
175 :
176 : ::com::sun::star::uno::Sequence< ::com::sun::star::rendering::FontInfo >
177 : queryAvailableFonts( const ::com::sun::star::rendering::XCanvas* pCanvas,
178 : const ::com::sun::star::rendering::FontInfo& aFilter,
179 : const ::com::sun::star::uno::Sequence<
180 : ::com::sun::star::beans::PropertyValue >& aFontProperties );
181 :
182 : ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XCachedPrimitive >
183 : drawText( const ::com::sun::star::rendering::XCanvas* pCanvas,
184 : const ::com::sun::star::rendering::StringContext& text,
185 : const ::com::sun::star::uno::Reference<
186 : ::com::sun::star::rendering::XCanvasFont >& xFont,
187 : const ::com::sun::star::rendering::ViewState& viewState,
188 : const ::com::sun::star::rendering::RenderState& renderState,
189 : sal_Int8 textDirection );
190 :
191 : ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XCachedPrimitive >
192 : drawTextLayout( const ::com::sun::star::rendering::XCanvas* pCanvas,
193 : const ::com::sun::star::uno::Reference<
194 : ::com::sun::star::rendering::XTextLayout >& laidOutText,
195 : const ::com::sun::star::rendering::ViewState& viewState,
196 : const ::com::sun::star::rendering::RenderState& renderState );
197 :
198 : ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XCachedPrimitive >
199 : drawBitmap( const ::com::sun::star::rendering::XCanvas* pCanvas,
200 : const ::com::sun::star::uno::Reference<
201 : ::com::sun::star::rendering::XBitmap >& xBitmap,
202 : const ::com::sun::star::rendering::ViewState& viewState,
203 : const ::com::sun::star::rendering::RenderState& renderState );
204 : ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XCachedPrimitive >
205 : drawBitmapModulated( const ::com::sun::star::rendering::XCanvas* pCanvas,
206 : const ::com::sun::star::uno::Reference<
207 : ::com::sun::star::rendering::XBitmap >& xBitmap,
208 : const ::com::sun::star::rendering::ViewState& viewState,
209 : const ::com::sun::star::rendering::RenderState& renderState );
210 : ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XGraphicDevice >
211 : getDevice();
212 :
213 : // BitmapCanvasHelper functionality
214 : // ================================
215 :
216 : void copyRect( const ::com::sun::star::rendering::XCanvas* pCanvas,
217 : const ::com::sun::star::uno::Reference<
218 : ::com::sun::star::rendering::XBitmapCanvas >& sourceCanvas,
219 : const ::com::sun::star::geometry::RealRectangle2D& sourceRect,
220 : const ::com::sun::star::rendering::ViewState& sourceViewState,
221 : const ::com::sun::star::rendering::RenderState& sourceRenderState,
222 : const ::com::sun::star::geometry::RealRectangle2D& destRect,
223 : const ::com::sun::star::rendering::ViewState& destViewState,
224 : const ::com::sun::star::rendering::RenderState& destRenderState );
225 :
226 : ::com::sun::star::geometry::IntegerSize2D getSize();
227 :
228 : ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XBitmap >
229 : getScaledBitmap( const ::com::sun::star::geometry::RealSize2D& newSize,
230 : sal_Bool beFast );
231 :
232 : ::com::sun::star::uno::Sequence< sal_Int8 >
233 : getData( ::com::sun::star::rendering::IntegerBitmapLayout& bitmapLayout,
234 : const ::com::sun::star::geometry::IntegerRectangle2D& rect );
235 :
236 : void setData( const ::com::sun::star::uno::Sequence< sal_Int8 >& data,
237 : const ::com::sun::star::rendering::IntegerBitmapLayout& bitmapLayout,
238 : const ::com::sun::star::geometry::IntegerRectangle2D& rect );
239 :
240 : void setPixel( const ::com::sun::star::uno::Sequence< sal_Int8 >& color,
241 : const ::com::sun::star::rendering::IntegerBitmapLayout& bitmapLayout,
242 : const ::com::sun::star::geometry::IntegerPoint2D& pos );
243 :
244 : ::com::sun::star::uno::Sequence< sal_Int8 >
245 : getPixel( ::com::sun::star::rendering::IntegerBitmapLayout& bitmapLayout,
246 : const ::com::sun::star::geometry::IntegerPoint2D& pos );
247 :
248 : ::com::sun::star::rendering::IntegerBitmapLayout getMemoryLayout();
249 :
250 : /** Called from XCanvas base classes, to notify that content
251 : is _about_ to change
252 : */
253 0 : void modifying() {}
254 :
255 : bool hasAlpha() const;
256 :
257 : enum ColorType
258 : {
259 : LINE_COLOR, FILL_COLOR, TEXT_COLOR, IGNORE_COLOR
260 : };
261 :
262 : void doPolyPolygonPath( const ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XPolyPolygon2D >& xPolyPolygon,
263 : Operation aOperation,
264 : bool bNoLineJoin = false,
265 : const ::com::sun::star::uno::Sequence< ::com::sun::star::rendering::Texture >* pTextures=NULL,
266 : ::cairo::Cairo* pCairo=NULL ) const;
267 :
268 : ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XCachedPrimitive > implDrawBitmapSurface(
269 : const ::com::sun::star::rendering::XCanvas* pCanvas,
270 : const ::cairo::SurfaceSharedPtr& pSurface,
271 : const ::com::sun::star::rendering::ViewState& viewState,
272 : const ::com::sun::star::rendering::RenderState& renderState,
273 : const ::com::sun::star::geometry::IntegerSize2D& rSize,
274 : bool bModulateColors,
275 : bool bHasAlpha );
276 :
277 : bool repaint( const ::cairo::SurfaceSharedPtr& pSurface,
278 : const ::com::sun::star::rendering::ViewState& viewState,
279 : const ::com::sun::star::rendering::RenderState& renderState );
280 :
281 : protected:
282 : /** Surface provider
283 :
284 : Deliberately not a refcounted reference, because of
285 : potential circular references for canvas. Provides us with
286 : our output surface and associated functionality.
287 : */
288 : SurfaceProvider* mpSurfaceProvider;
289 :
290 : /** Phyical output device
291 :
292 : Deliberately not a refcounted reference, because of
293 : potential circular references for spritecanvas.
294 : */
295 : ::com::sun::star::rendering::XGraphicDevice* mpDevice;
296 :
297 : private:
298 :
299 : boost::shared_ptr<VirtualDevice> mpVirtualDevice;
300 :
301 : void useStates( const ::com::sun::star::rendering::ViewState& viewState,
302 : const ::com::sun::star::rendering::RenderState& renderState,
303 : bool setColor );
304 :
305 : com::sun::star::rendering::IntegerBitmapLayout impl_getMemoryLayout( sal_Int32 nWidth, sal_Int32 nHeight );
306 :
307 : /// When true, content is able to represent alpha
308 : bool mbHaveAlpha;
309 :
310 : CairoSharedPtr mpCairo;
311 : SurfaceSharedPtr mpSurface;
312 : ::basegfx::B2ISize maSize;
313 : };
314 :
315 : /// also needed from SpriteHelper
316 : void doPolyPolygonImplementation( ::basegfx::B2DPolyPolygon aPolyPolygon,
317 : Operation aOperation,
318 : ::cairo::Cairo* pCairo,
319 : const ::com::sun::star::uno::Sequence< ::com::sun::star::rendering::Texture >* pTextures,
320 : const SurfaceProviderRef& pDevice,
321 : ::com::sun::star::rendering::FillRule eFillrule );
322 : }
323 :
324 : #endif // INCLUDED_CANVAS_SOURCE_CAIRO_CAIRO_CANVASHELPER_HXX
325 :
326 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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