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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 <vclhelperbufferdevice.hxx>
21 : #include <basegfx/range/b2drange.hxx>
22 : #include <vcl/bitmapex.hxx>
23 : #include <basegfx/matrix/b2dhommatrix.hxx>
24 : #include <tools/stream.hxx>
25 : #include <vcl/timer.hxx>
26 : #include <comphelper/broadcasthelper.hxx>
27 : #include <vcl/lazydelete.hxx>
28 : #include <vcl/dibtools.hxx>
29 :
30 :
31 : // buffered VDev usage
32 :
33 : namespace
34 : {
35 : typedef ::std::vector< VirtualDevice* > aBuffers;
36 :
37 : class VDevBuffer : public Timer, protected comphelper::OBaseMutex
38 : {
39 : private:
40 : // available buffers
41 : aBuffers maFreeBuffers;
42 :
43 : // allocated/used buffers (remembered to allow deleteing them in destructor)
44 : aBuffers maUsedBuffers;
45 :
46 : public:
47 : VDevBuffer();
48 : virtual ~VDevBuffer();
49 :
50 : VirtualDevice* alloc(OutputDevice& rOutDev, const Size& rSizePixel, bool bClear, sal_Int32 nBits);
51 : void free(VirtualDevice& rDevice);
52 :
53 : // Timer virtuals
54 : virtual void Timeout() SAL_OVERRIDE;
55 : };
56 :
57 0 : VDevBuffer::VDevBuffer()
58 : : Timer(),
59 : maFreeBuffers(),
60 0 : maUsedBuffers()
61 : {
62 0 : SetTimeout(10L * 1000L); // ten seconds
63 0 : }
64 :
65 0 : VDevBuffer::~VDevBuffer()
66 : {
67 0 : ::osl::MutexGuard aGuard(m_aMutex);
68 0 : Stop();
69 :
70 0 : while(!maFreeBuffers.empty())
71 : {
72 0 : delete *(maFreeBuffers.end() - 1);
73 0 : maFreeBuffers.pop_back();
74 : }
75 :
76 0 : while(!maUsedBuffers.empty())
77 : {
78 0 : delete *(maUsedBuffers.end() - 1);
79 0 : maUsedBuffers.pop_back();
80 0 : }
81 0 : }
82 :
83 0 : VirtualDevice* VDevBuffer::alloc(OutputDevice& rOutDev, const Size& rSizePixel, bool bClear, sal_Int32 nBits)
84 : {
85 0 : ::osl::MutexGuard aGuard(m_aMutex);
86 0 : VirtualDevice* pRetval = 0;
87 :
88 0 : if(!maFreeBuffers.empty())
89 : {
90 0 : bool bOkay(false);
91 0 : aBuffers::iterator aFound(maFreeBuffers.end());
92 :
93 0 : for(aBuffers::iterator a(maFreeBuffers.begin()); a != maFreeBuffers.end(); ++a)
94 : {
95 : OSL_ENSURE(*a, "Empty pointer in VDevBuffer (!)");
96 :
97 0 : if(nBits == (*a)->GetBitCount())
98 : {
99 : // candidate is valid due to bit depth
100 0 : if(aFound != maFreeBuffers.end())
101 : {
102 : // already found
103 0 : if(bOkay)
104 : {
105 : // found is valid
106 0 : const bool bCandidateOkay((*a)->GetOutputWidthPixel() >= rSizePixel.getWidth() && (*a)->GetOutputHeightPixel() >= rSizePixel.getHeight());
107 :
108 0 : if(bCandidateOkay)
109 : {
110 : // found and candidate are valid
111 0 : const sal_uLong aSquare((*aFound)->GetOutputWidthPixel() * (*aFound)->GetOutputHeightPixel());
112 0 : const sal_uLong aCandidateSquare((*a)->GetOutputWidthPixel() * (*a)->GetOutputHeightPixel());
113 :
114 0 : if(aCandidateSquare < aSquare)
115 : {
116 : // candidate is valid and smaller, use it
117 0 : aFound = a;
118 : }
119 : }
120 : else
121 : {
122 : // found is valid, candidate is not. Keep found
123 : }
124 : }
125 : else
126 : {
127 : // found is invalid, use candidate
128 0 : aFound = a;
129 0 : bOkay = (*aFound)->GetOutputWidthPixel() >= rSizePixel.getWidth() && (*aFound)->GetOutputHeightPixel() >= rSizePixel.getHeight();
130 : }
131 : }
132 : else
133 : {
134 : // none yet, use candidate
135 0 : aFound = a;
136 0 : bOkay = (*aFound)->GetOutputWidthPixel() >= rSizePixel.getWidth() && (*aFound)->GetOutputHeightPixel() >= rSizePixel.getHeight();
137 : }
138 : }
139 : }
140 :
141 0 : if(aFound != maFreeBuffers.end())
142 : {
143 0 : pRetval = *aFound;
144 0 : maFreeBuffers.erase(aFound);
145 :
146 0 : if(bOkay)
147 : {
148 0 : if(bClear)
149 : {
150 0 : pRetval->Erase(Rectangle(0, 0, rSizePixel.getWidth(), rSizePixel.getHeight()));
151 : }
152 : }
153 : else
154 : {
155 0 : pRetval->SetOutputSizePixel(rSizePixel, bClear);
156 : }
157 : }
158 : }
159 :
160 : // no success yet, create new buffer
161 0 : if(!pRetval)
162 : {
163 0 : pRetval = new VirtualDevice(rOutDev, nBits);
164 0 : pRetval->SetOutputSizePixel(rSizePixel, bClear);
165 : }
166 : else
167 : {
168 : // reused, reset some values
169 0 : pRetval->SetMapMode();
170 : }
171 :
172 : // remember allocated buffer
173 0 : maUsedBuffers.push_back(pRetval);
174 :
175 0 : return pRetval;
176 : }
177 :
178 0 : void VDevBuffer::free(VirtualDevice& rDevice)
179 : {
180 0 : ::osl::MutexGuard aGuard(m_aMutex);
181 0 : const aBuffers::iterator aUsedFound(::std::find(maUsedBuffers.begin(), maUsedBuffers.end(), &rDevice));
182 : OSL_ENSURE(aUsedFound != maUsedBuffers.end(), "OOps, non-registered buffer freed (!)");
183 :
184 0 : maUsedBuffers.erase(aUsedFound);
185 0 : maFreeBuffers.push_back(&rDevice);
186 0 : Start();
187 0 : }
188 :
189 0 : void VDevBuffer::Timeout()
190 : {
191 0 : ::osl::MutexGuard aGuard(m_aMutex);
192 :
193 0 : while(!maFreeBuffers.empty())
194 : {
195 0 : delete *(maFreeBuffers.end() - 1);
196 0 : maFreeBuffers.pop_back();
197 0 : }
198 0 : }
199 : }
200 :
201 :
202 : // support for rendering Bitmap and BitmapEx contents
203 :
204 : namespace drawinglayer
205 : {
206 : // static global VDev buffer for the VclProcessor2D's (VclMetafileProcessor2D and VclPixelProcessor2D)
207 0 : VDevBuffer& getVDevBuffer()
208 : {
209 : // secure global instance with Vcl's safe desroyer of external (seen by
210 : // library base) stuff, the remembered VDevs need to be deleted before
211 : // Vcl's deinit
212 0 : static vcl::DeleteOnDeinit< VDevBuffer > aVDevBuffer(new VDevBuffer());
213 0 : return *aVDevBuffer.get();
214 : }
215 :
216 0 : impBufferDevice::impBufferDevice(
217 : OutputDevice& rOutDev,
218 : const basegfx::B2DRange& rRange,
219 : bool bAddOffsetToMapping)
220 : : mrOutDev(rOutDev),
221 : mpContent(0),
222 : mpMask(0),
223 0 : mpAlpha(0)
224 : {
225 0 : basegfx::B2DRange aRangePixel(rRange);
226 0 : aRangePixel.transform(mrOutDev.GetViewTransformation());
227 : const Rectangle aRectPixel(
228 0 : (sal_Int32)floor(aRangePixel.getMinX()), (sal_Int32)floor(aRangePixel.getMinY()),
229 0 : (sal_Int32)ceil(aRangePixel.getMaxX()), (sal_Int32)ceil(aRangePixel.getMaxY()));
230 0 : const Point aEmptyPoint;
231 0 : maDestPixel = Rectangle(aEmptyPoint, mrOutDev.GetOutputSizePixel());
232 0 : maDestPixel.Intersection(aRectPixel);
233 :
234 0 : if(isVisible())
235 : {
236 : #ifdef IOS
237 : // Exact mechanism unknown, but for some reason SmartArt
238 : // rendering, especially shadows, is broken on iOS unless
239 : // we pass 'true' here. Are virtual devices always de
240 : // facto cleared when created on other platforms?
241 : mpContent = getVDevBuffer().alloc(mrOutDev, maDestPixel.GetSize(), true, 0);
242 : #else
243 0 : mpContent = getVDevBuffer().alloc(mrOutDev, maDestPixel.GetSize(), false, 0);
244 : #endif
245 :
246 : // #i93485# assert when copying from window to VDev is used
247 : OSL_ENSURE(mrOutDev.GetOutDevType() != OUTDEV_WINDOW,
248 : "impBufferDevice render helper: Copying from Window to VDev, this should be avoided (!)");
249 :
250 0 : const bool bWasEnabledSrc(mrOutDev.IsMapModeEnabled());
251 0 : mrOutDev.EnableMapMode(false);
252 0 : mpContent->DrawOutDev(aEmptyPoint, maDestPixel.GetSize(), maDestPixel.TopLeft(), maDestPixel.GetSize(), mrOutDev);
253 0 : mrOutDev.EnableMapMode(bWasEnabledSrc);
254 :
255 0 : MapMode aNewMapMode(mrOutDev.GetMapMode());
256 :
257 0 : if(bAddOffsetToMapping)
258 : {
259 0 : const Point aLogicTopLeft(mrOutDev.PixelToLogic(maDestPixel.TopLeft()));
260 0 : aNewMapMode.SetOrigin(Point(-aLogicTopLeft.X(), -aLogicTopLeft.Y()));
261 : }
262 :
263 0 : mpContent->SetMapMode(aNewMapMode);
264 :
265 : // copy AA flag for new target
266 0 : mpContent->SetAntialiasing(mrOutDev.GetAntialiasing());
267 : }
268 0 : }
269 :
270 0 : impBufferDevice::~impBufferDevice()
271 : {
272 0 : if(mpContent)
273 : {
274 0 : getVDevBuffer().free(*mpContent);
275 : }
276 :
277 0 : if(mpMask)
278 : {
279 0 : getVDevBuffer().free(*mpMask);
280 : }
281 :
282 0 : if(mpAlpha)
283 : {
284 0 : getVDevBuffer().free(*mpAlpha);
285 : }
286 0 : }
287 :
288 0 : void impBufferDevice::paint(double fTrans)
289 : {
290 0 : if(isVisible())
291 : {
292 0 : const Point aEmptyPoint;
293 0 : const Size aSizePixel(maDestPixel.GetSize());
294 0 : const bool bWasEnabledDst(mrOutDev.IsMapModeEnabled());
295 : static bool bDoSaveForVisualControl(false);
296 :
297 0 : mrOutDev.EnableMapMode(false);
298 0 : mpContent->EnableMapMode(false);
299 0 : Bitmap aContent(mpContent->GetBitmap(aEmptyPoint, aSizePixel));
300 :
301 0 : if(bDoSaveForVisualControl)
302 : {
303 0 : SvFileStream aNew( "c:\\content.bmp", STREAM_WRITE|STREAM_TRUNC);
304 0 : WriteDIB(aContent, aNew, false, true);
305 : }
306 :
307 0 : if(mpAlpha)
308 : {
309 0 : mpAlpha->EnableMapMode(false);
310 0 : const AlphaMask aAlphaMask(mpAlpha->GetBitmap(aEmptyPoint, aSizePixel));
311 :
312 0 : if(bDoSaveForVisualControl)
313 : {
314 0 : SvFileStream aNew( "c:\\transparence.bmp", STREAM_WRITE|STREAM_TRUNC);
315 0 : WriteDIB(aAlphaMask.GetBitmap(), aNew, false, true);
316 : }
317 :
318 0 : mrOutDev.DrawBitmapEx(maDestPixel.TopLeft(), BitmapEx(aContent, aAlphaMask));
319 : }
320 0 : else if(mpMask)
321 : {
322 0 : mpMask->EnableMapMode(false);
323 0 : const Bitmap aMask(mpMask->GetBitmap(aEmptyPoint, aSizePixel));
324 :
325 0 : if(bDoSaveForVisualControl)
326 : {
327 0 : SvFileStream aNew( "c:\\mask.bmp", STREAM_WRITE|STREAM_TRUNC);
328 0 : WriteDIB(aMask, aNew, false, true);
329 : }
330 :
331 0 : mrOutDev.DrawBitmapEx(maDestPixel.TopLeft(), BitmapEx(aContent, aMask));
332 : }
333 0 : else if(0.0 != fTrans)
334 : {
335 0 : sal_uInt8 nMaskValue((sal_uInt8)basegfx::fround(fTrans * 255.0));
336 0 : const AlphaMask aAlphaMask(aSizePixel, &nMaskValue);
337 0 : mrOutDev.DrawBitmapEx(maDestPixel.TopLeft(), BitmapEx(aContent, aAlphaMask));
338 : }
339 : else
340 : {
341 0 : mrOutDev.DrawBitmap(maDestPixel.TopLeft(), aContent);
342 : }
343 :
344 0 : mrOutDev.EnableMapMode(bWasEnabledDst);
345 : }
346 0 : }
347 :
348 0 : VirtualDevice& impBufferDevice::getContent()
349 : {
350 : OSL_ENSURE(mpContent, "impBufferDevice: No content, check isVisible() before accessing (!)");
351 0 : return *mpContent;
352 : }
353 :
354 0 : VirtualDevice& impBufferDevice::getMask()
355 : {
356 : OSL_ENSURE(mpContent, "impBufferDevice: No content, check isVisible() before accessing (!)");
357 0 : if(!mpMask)
358 : {
359 0 : mpMask = getVDevBuffer().alloc(mrOutDev, maDestPixel.GetSize(), true, 1);
360 0 : mpMask->SetMapMode(mpContent->GetMapMode());
361 :
362 : // do NOT copy AA flag for mask!
363 : }
364 :
365 0 : return *mpMask;
366 : }
367 :
368 0 : VirtualDevice& impBufferDevice::getTransparence()
369 : {
370 : OSL_ENSURE(mpContent, "impBufferDevice: No content, check isVisible() before accessing (!)");
371 0 : if(!mpAlpha)
372 : {
373 0 : mpAlpha = getVDevBuffer().alloc(mrOutDev, maDestPixel.GetSize(), true, 8);
374 0 : mpAlpha->SetMapMode(mpContent->GetMapMode());
375 :
376 : // copy AA flag for new target; masking needs to be smooth
377 0 : mpAlpha->SetAntialiasing(mpContent->GetAntialiasing());
378 : }
379 :
380 0 : return *mpAlpha;
381 : }
382 : } // end of namespace drawinglayer
383 :
384 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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