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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 : #include <svx/sdr/overlay/overlayselection.hxx>
21 : #include <basegfx/polygon/b2dpolygontools.hxx>
22 : #include <basegfx/polygon/b2dpolygon.hxx>
23 : #include <drawinglayer/primitive2d/polypolygonprimitive2d.hxx>
24 : #include <svtools/optionsdrawinglayer.hxx>
25 : #include <vcl/svapp.hxx>
26 : #include <vcl/outdev.hxx>
27 : #include <vcl/settings.hxx>
28 : #include <drawinglayer/primitive2d/invertprimitive2d.hxx>
29 : #include <drawinglayer/primitive2d/unifiedtransparenceprimitive2d.hxx>
30 : #include <basegfx/polygon/b2dpolypolygoncutter.hxx>
31 : #include <svx/sdr/overlay/overlaymanager.hxx>
32 :
33 :
34 :
35 : namespace sdr
36 : {
37 : namespace overlay
38 : {
39 : // combine rages geometrically to a single, ORed polygon
40 0 : basegfx::B2DPolyPolygon impCombineRangesToPolyPolygon(const std::vector< basegfx::B2DRange >& rRanges)
41 : {
42 0 : const sal_uInt32 nCount(rRanges.size());
43 0 : basegfx::B2DPolyPolygon aRetval;
44 :
45 0 : for(sal_uInt32 a(0); a < nCount; a++)
46 : {
47 0 : const basegfx::B2DPolygon aDiscretePolygon(basegfx::tools::createPolygonFromRect(rRanges[a]));
48 :
49 0 : if(0 == a)
50 : {
51 0 : aRetval.append(aDiscretePolygon);
52 : }
53 : else
54 : {
55 0 : aRetval = basegfx::tools::solvePolygonOperationOr(aRetval, basegfx::B2DPolyPolygon(aDiscretePolygon));
56 : }
57 0 : }
58 :
59 0 : return aRetval;
60 : }
61 :
62 : // check if wanted type OVERLAY_TRANSPARENT or OVERLAY_SOLID
63 : // is possible. If not, fallback to invert mode (classic mode)
64 0 : OverlayType impCheckPossibleOverlayType(OverlayType aOverlayType)
65 : {
66 0 : if(OVERLAY_INVERT != aOverlayType)
67 : {
68 0 : const SvtOptionsDrawinglayer aSvtOptionsDrawinglayer;
69 :
70 0 : if(!aSvtOptionsDrawinglayer.IsTransparentSelection())
71 : {
72 : // not possible when switched off by user
73 0 : return OVERLAY_INVERT;
74 : }
75 : else
76 : {
77 0 : const OutputDevice *pOut = Application::GetDefaultDevice();
78 :
79 0 : if(pOut->GetSettings().GetStyleSettings().GetHighContrastMode())
80 : {
81 : // not possible when in high contrast mode
82 0 : return OVERLAY_INVERT;
83 : }
84 :
85 0 : if(!pOut->supportsOperation(OutDevSupport_TransparentRect))
86 : {
87 : // not possible when no fast transparence paint is supported on the system
88 0 : return OVERLAY_INVERT;
89 : }
90 0 : }
91 : }
92 :
93 0 : return aOverlayType;
94 : }
95 :
96 0 : drawinglayer::primitive2d::Primitive2DSequence OverlaySelection::createOverlayObjectPrimitive2DSequence()
97 : {
98 0 : drawinglayer::primitive2d::Primitive2DSequence aRetval;
99 0 : const sal_uInt32 nCount(getRanges().size());
100 :
101 0 : if(nCount)
102 : {
103 : // create range primitives
104 0 : const bool bInvert(OVERLAY_INVERT == maLastOverlayType);
105 0 : basegfx::BColor aRGBColor(getBaseColor().getBColor());
106 0 : aRetval.realloc(nCount);
107 :
108 0 : if(bInvert)
109 : {
110 : // force color to white for invert to get a full invert
111 0 : aRGBColor = basegfx::BColor(1.0, 1.0, 1.0);
112 : }
113 :
114 0 : for(sal_uInt32 a(0);a < nCount; a++)
115 : {
116 0 : const basegfx::B2DPolygon aPolygon(basegfx::tools::createPolygonFromRect(maRanges[a]));
117 0 : aRetval[a] = drawinglayer::primitive2d::Primitive2DReference(
118 : new drawinglayer::primitive2d::PolyPolygonColorPrimitive2D(
119 : basegfx::B2DPolyPolygon(aPolygon),
120 0 : aRGBColor));
121 0 : }
122 :
123 0 : if(bInvert)
124 : {
125 : // embed all in invert primitive
126 : const drawinglayer::primitive2d::Primitive2DReference aInvert(
127 : new drawinglayer::primitive2d::InvertPrimitive2D(
128 0 : aRetval));
129 0 : aRetval = drawinglayer::primitive2d::Primitive2DSequence(&aInvert, 1);
130 : }
131 0 : else if(OVERLAY_TRANSPARENT == maLastOverlayType)
132 : {
133 : // embed all rectangles in transparent paint
134 0 : const double fTransparence(mnLastTransparence / 100.0);
135 : const drawinglayer::primitive2d::Primitive2DReference aUnifiedTransparence(
136 : new drawinglayer::primitive2d::UnifiedTransparencePrimitive2D(
137 : aRetval,
138 0 : fTransparence));
139 :
140 0 : if(getBorder())
141 : {
142 0 : const basegfx::B2DPolyPolygon aPolyPolygon(impCombineRangesToPolyPolygon(getRanges()));
143 : const drawinglayer::primitive2d::Primitive2DReference aSelectionOutline(
144 : new drawinglayer::primitive2d::PolyPolygonHairlinePrimitive2D(
145 : aPolyPolygon,
146 0 : aRGBColor));
147 :
148 : // add both to result
149 0 : aRetval.realloc(2);
150 0 : aRetval[0] = aUnifiedTransparence;
151 0 : aRetval[1] = aSelectionOutline;
152 : }
153 : else
154 : {
155 : // just add transparent part
156 0 : aRetval = drawinglayer::primitive2d::Primitive2DSequence(&aUnifiedTransparence, 1);
157 0 : }
158 0 : }
159 : }
160 :
161 0 : return aRetval;
162 : }
163 :
164 0 : OverlaySelection::OverlaySelection(
165 : OverlayType eType,
166 : const Color& rColor,
167 : const std::vector< basegfx::B2DRange >& rRanges,
168 : bool bBorder)
169 : : OverlayObject(rColor),
170 : meOverlayType(eType),
171 : maRanges(rRanges),
172 : maLastOverlayType(eType),
173 : mnLastTransparence(0),
174 0 : mbBorder(bBorder)
175 : {
176 : // no AA for selection overlays
177 0 : allowAntiAliase(false);
178 0 : }
179 :
180 0 : OverlaySelection::~OverlaySelection()
181 : {
182 0 : if(getOverlayManager())
183 : {
184 0 : getOverlayManager()->remove(*this);
185 : }
186 0 : }
187 :
188 0 : drawinglayer::primitive2d::Primitive2DSequence OverlaySelection::getOverlayObjectPrimitive2DSequence() const
189 : {
190 : // get current values
191 0 : const OverlayType aNewOverlayType(impCheckPossibleOverlayType(meOverlayType));
192 0 : const SvtOptionsDrawinglayer aSvtOptionsDrawinglayer;
193 0 : const sal_uInt16 nNewTransparence(aSvtOptionsDrawinglayer.GetTransparentSelectionPercent());
194 :
195 0 : if(getPrimitive2DSequence().hasElements())
196 : {
197 0 : if(aNewOverlayType != maLastOverlayType
198 0 : || nNewTransparence != mnLastTransparence)
199 : {
200 : // conditions of last local decomposition have changed, delete
201 0 : const_cast< OverlaySelection* >(this)->setPrimitive2DSequence(drawinglayer::primitive2d::Primitive2DSequence());
202 : }
203 : }
204 :
205 0 : if(!getPrimitive2DSequence().hasElements())
206 : {
207 : // remember new values
208 0 : const_cast< OverlaySelection* >(this)->maLastOverlayType = aNewOverlayType;
209 0 : const_cast< OverlaySelection* >(this)->mnLastTransparence = nNewTransparence;
210 : }
211 :
212 : // call base implementation
213 0 : return OverlayObject::getOverlayObjectPrimitive2DSequence();
214 : }
215 :
216 0 : void OverlaySelection::setRanges(const std::vector< basegfx::B2DRange >& rNew)
217 : {
218 0 : if(rNew != maRanges)
219 : {
220 0 : maRanges = rNew;
221 0 : objectChange();
222 : }
223 0 : }
224 : } // end of namespace overlay
225 : } // end of namespace sdr
226 :
227 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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