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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, bool bMono);
51 : void free(VirtualDevice& rDevice);
52 :
53 : // Timer virtuals
54 : virtual void Timeout();
55 : };
56 :
57 7 : VDevBuffer::VDevBuffer()
58 : : Timer(),
59 : maFreeBuffers(),
60 7 : maUsedBuffers()
61 : {
62 7 : SetTimeout(10L * 1000L); // ten seconds
63 7 : }
64 :
65 18 : VDevBuffer::~VDevBuffer()
66 : {
67 6 : ::osl::MutexGuard aGuard(m_aMutex);
68 6 : Stop();
69 :
70 38 : while(!maFreeBuffers.empty())
71 : {
72 26 : delete *(maFreeBuffers.end() - 1);
73 26 : maFreeBuffers.pop_back();
74 : }
75 :
76 12 : while(!maUsedBuffers.empty())
77 : {
78 0 : delete *(maUsedBuffers.end() - 1);
79 0 : maUsedBuffers.pop_back();
80 6 : }
81 12 : }
82 :
83 9895 : VirtualDevice* VDevBuffer::alloc(OutputDevice& rOutDev, const Size& rSizePixel, bool bClear, bool bMono)
84 : {
85 9895 : ::osl::MutexGuard aGuard(m_aMutex);
86 9895 : VirtualDevice* pRetval = 0;
87 :
88 9895 : if(!maFreeBuffers.empty())
89 : {
90 9878 : bool bOkay(false);
91 9878 : aBuffers::iterator aFound(maFreeBuffers.end());
92 :
93 53970 : for(aBuffers::iterator a(maFreeBuffers.begin()); a != maFreeBuffers.end(); ++a)
94 : {
95 : OSL_ENSURE(*a, "Empty pointer in VDevBuffer (!)");
96 :
97 44092 : if((bMono && 1 == (*a)->GetBitCount()) || (!bMono && (*a)->GetBitCount() > 1))
98 : {
99 : // candidate is valid due to bit depth
100 26004 : if(aFound != maFreeBuffers.end())
101 : {
102 : // already found
103 16144 : if(bOkay)
104 : {
105 : // found is valid
106 13328 : const bool bCandidateOkay((*a)->GetOutputWidthPixel() >= rSizePixel.getWidth() && (*a)->GetOutputHeightPixel() >= rSizePixel.getHeight());
107 :
108 13328 : if(bCandidateOkay)
109 : {
110 : // found and candidate are valid
111 11609 : const sal_uLong aSquare((*aFound)->GetOutputWidthPixel() * (*aFound)->GetOutputHeightPixel());
112 11609 : const sal_uLong aCandidateSquare((*a)->GetOutputWidthPixel() * (*a)->GetOutputHeightPixel());
113 :
114 11609 : if(aCandidateSquare < aSquare)
115 : {
116 : // candidate is valid and smaller, use it
117 5544 : 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 2816 : aFound = a;
129 2816 : bOkay = (*aFound)->GetOutputWidthPixel() >= rSizePixel.getWidth() && (*aFound)->GetOutputHeightPixel() >= rSizePixel.getHeight();
130 : }
131 : }
132 : else
133 : {
134 : // none yet, use candidate
135 9860 : aFound = a;
136 9860 : bOkay = (*aFound)->GetOutputWidthPixel() >= rSizePixel.getWidth() && (*aFound)->GetOutputHeightPixel() >= rSizePixel.getHeight();
137 : }
138 : }
139 : }
140 :
141 9878 : if(aFound != maFreeBuffers.end())
142 : {
143 9860 : pRetval = *aFound;
144 9860 : maFreeBuffers.erase(aFound);
145 :
146 9860 : if(bOkay)
147 : {
148 8974 : if(bClear)
149 : {
150 4183 : pRetval->Erase(Rectangle(0, 0, rSizePixel.getWidth(), rSizePixel.getHeight()));
151 : }
152 : }
153 : else
154 : {
155 886 : pRetval->SetOutputSizePixel(rSizePixel, bClear);
156 : }
157 : }
158 : }
159 :
160 : // no success yet, create new buffer
161 9895 : if(!pRetval)
162 : {
163 35 : pRetval = (bMono) ? new VirtualDevice(rOutDev, 1) : new VirtualDevice(rOutDev);
164 35 : pRetval->SetOutputSizePixel(rSizePixel, bClear);
165 : }
166 : else
167 : {
168 : // reused, reset some values
169 9860 : pRetval->SetMapMode();
170 : }
171 :
172 : // remember allocated buffer
173 9895 : maUsedBuffers.push_back(pRetval);
174 :
175 9895 : return pRetval;
176 : }
177 :
178 9895 : void VDevBuffer::free(VirtualDevice& rDevice)
179 : {
180 9895 : ::osl::MutexGuard aGuard(m_aMutex);
181 9895 : const aBuffers::iterator aUsedFound(::std::find(maUsedBuffers.begin(), maUsedBuffers.end(), &rDevice));
182 : OSL_ENSURE(aUsedFound != maUsedBuffers.end(), "OOps, non-registered buffer freed (!)");
183 :
184 9895 : maUsedBuffers.erase(aUsedFound);
185 9895 : maFreeBuffers.push_back(&rDevice);
186 9895 : Start();
187 9895 : }
188 :
189 4 : void VDevBuffer::Timeout()
190 : {
191 4 : ::osl::MutexGuard aGuard(m_aMutex);
192 :
193 17 : while(!maFreeBuffers.empty())
194 : {
195 9 : delete *(maFreeBuffers.end() - 1);
196 9 : maFreeBuffers.pop_back();
197 4 : }
198 4 : }
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 19790 : 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 19790 : static vcl::DeleteOnDeinit< VDevBuffer > aVDevBuffer(new VDevBuffer());
213 19790 : return *aVDevBuffer.get();
214 : }
215 :
216 5338 : impBufferDevice::impBufferDevice(
217 : OutputDevice& rOutDev,
218 : const basegfx::B2DRange& rRange,
219 : bool bAddOffsetToMapping)
220 : : mrOutDev(rOutDev),
221 : mpContent(0),
222 : mpMask(0),
223 5338 : mpAlpha(0)
224 : {
225 5338 : basegfx::B2DRange aRangePixel(rRange);
226 5338 : aRangePixel.transform(mrOutDev.GetViewTransformation());
227 : const Rectangle aRectPixel(
228 10676 : (sal_Int32)floor(aRangePixel.getMinX()), (sal_Int32)floor(aRangePixel.getMinY()),
229 16014 : (sal_Int32)ceil(aRangePixel.getMaxX()), (sal_Int32)ceil(aRangePixel.getMaxY()));
230 5338 : const Point aEmptyPoint;
231 5338 : maDestPixel = Rectangle(aEmptyPoint, mrOutDev.GetOutputSizePixel());
232 5338 : maDestPixel.Intersection(aRectPixel);
233 :
234 5338 : if(isVisible())
235 : {
236 5250 : mpContent = getVDevBuffer().alloc(mrOutDev, maDestPixel.GetSize(), false, false);
237 :
238 : // #i93485# assert when copying from window to VDev is used
239 : OSL_ENSURE(mrOutDev.GetOutDevType() != OUTDEV_WINDOW,
240 : "impBufferDevice render helper: Copying from Window to VDev, this should be avoided (!)");
241 :
242 5250 : const bool bWasEnabledSrc(mrOutDev.IsMapModeEnabled());
243 5250 : mrOutDev.EnableMapMode(false);
244 5250 : mpContent->DrawOutDev(aEmptyPoint, maDestPixel.GetSize(), maDestPixel.TopLeft(), maDestPixel.GetSize(), mrOutDev);
245 5250 : mrOutDev.EnableMapMode(bWasEnabledSrc);
246 :
247 5250 : MapMode aNewMapMode(mrOutDev.GetMapMode());
248 :
249 5250 : if(bAddOffsetToMapping)
250 : {
251 5250 : const Point aLogicTopLeft(mrOutDev.PixelToLogic(maDestPixel.TopLeft()));
252 5250 : aNewMapMode.SetOrigin(Point(-aLogicTopLeft.X(), -aLogicTopLeft.Y()));
253 : }
254 :
255 5250 : mpContent->SetMapMode(aNewMapMode);
256 :
257 : // copy AA flag for new target
258 5250 : mpContent->SetAntialiasing(mrOutDev.GetAntialiasing());
259 : }
260 5338 : }
261 :
262 5338 : impBufferDevice::~impBufferDevice()
263 : {
264 5338 : if(mpContent)
265 : {
266 5250 : getVDevBuffer().free(*mpContent);
267 : }
268 :
269 5338 : if(mpMask)
270 : {
271 3703 : getVDevBuffer().free(*mpMask);
272 : }
273 :
274 5338 : if(mpAlpha)
275 : {
276 942 : getVDevBuffer().free(*mpAlpha);
277 : }
278 5338 : }
279 :
280 5250 : void impBufferDevice::paint(double fTrans)
281 : {
282 5250 : if(isVisible())
283 : {
284 5250 : const Point aEmptyPoint;
285 5250 : const Size aSizePixel(maDestPixel.GetSize());
286 5250 : const bool bWasEnabledDst(mrOutDev.IsMapModeEnabled());
287 : static bool bDoSaveForVisualControl(false);
288 :
289 5250 : mrOutDev.EnableMapMode(false);
290 5250 : mpContent->EnableMapMode(false);
291 5250 : Bitmap aContent(mpContent->GetBitmap(aEmptyPoint, aSizePixel));
292 :
293 5250 : if(bDoSaveForVisualControl)
294 : {
295 0 : SvFileStream aNew((const String&)String( "c:\\content.bmp" ), STREAM_WRITE|STREAM_TRUNC);
296 0 : WriteDIB(aContent, aNew, false, true);
297 : }
298 :
299 5250 : if(mpAlpha)
300 : {
301 942 : mpAlpha->EnableMapMode(false);
302 942 : const AlphaMask aAlphaMask(mpAlpha->GetBitmap(aEmptyPoint, aSizePixel));
303 :
304 942 : if(bDoSaveForVisualControl)
305 : {
306 0 : SvFileStream aNew((const String&)String( "c:\\transparence.bmp" ), STREAM_WRITE|STREAM_TRUNC);
307 0 : WriteDIB(aAlphaMask.GetBitmap(), aNew, false, true);
308 : }
309 :
310 942 : mrOutDev.DrawBitmapEx(maDestPixel.TopLeft(), BitmapEx(aContent, aAlphaMask));
311 : }
312 4308 : else if(mpMask)
313 : {
314 3703 : mpMask->EnableMapMode(false);
315 3703 : const Bitmap aMask(mpMask->GetBitmap(aEmptyPoint, aSizePixel));
316 :
317 3703 : if(bDoSaveForVisualControl)
318 : {
319 0 : SvFileStream aNew((const String&)String( "c:\\mask.bmp" ), STREAM_WRITE|STREAM_TRUNC);
320 0 : WriteDIB(aMask, aNew, false, true);
321 : }
322 :
323 3703 : mrOutDev.DrawBitmapEx(maDestPixel.TopLeft(), BitmapEx(aContent, aMask));
324 : }
325 605 : else if(0.0 != fTrans)
326 : {
327 605 : sal_uInt8 nMaskValue((sal_uInt8)basegfx::fround(fTrans * 255.0));
328 605 : const AlphaMask aAlphaMask(aSizePixel, &nMaskValue);
329 605 : mrOutDev.DrawBitmapEx(maDestPixel.TopLeft(), BitmapEx(aContent, aAlphaMask));
330 : }
331 : else
332 : {
333 0 : mrOutDev.DrawBitmap(maDestPixel.TopLeft(), aContent);
334 : }
335 :
336 5250 : mrOutDev.EnableMapMode(bWasEnabledDst);
337 : }
338 5250 : }
339 :
340 5250 : VirtualDevice& impBufferDevice::getContent()
341 : {
342 : OSL_ENSURE(mpContent, "impBufferDevice: No content, check isVisible() before accessing (!)");
343 5250 : return *mpContent;
344 : }
345 :
346 3703 : VirtualDevice& impBufferDevice::getMask()
347 : {
348 : OSL_ENSURE(mpContent, "impBufferDevice: No content, check isVisible() before accessing (!)");
349 3703 : if(!mpMask)
350 : {
351 3703 : mpMask = getVDevBuffer().alloc(mrOutDev, maDestPixel.GetSize(), true, true);
352 3703 : mpMask->SetMapMode(mpContent->GetMapMode());
353 :
354 : // do NOT copy AA flag for mask!
355 : }
356 :
357 3703 : return *mpMask;
358 : }
359 :
360 942 : VirtualDevice& impBufferDevice::getTransparence()
361 : {
362 : OSL_ENSURE(mpContent, "impBufferDevice: No content, check isVisible() before accessing (!)");
363 942 : if(!mpAlpha)
364 : {
365 942 : mpAlpha = getVDevBuffer().alloc(mrOutDev, maDestPixel.GetSize(), true, false);
366 942 : mpAlpha->SetMapMode(mpContent->GetMapMode());
367 :
368 : // copy AA flag for new target; masking needs to be smooth
369 942 : mpAlpha->SetAntialiasing(mpContent->GetAntialiasing());
370 : }
371 :
372 942 : return *mpAlpha;
373 : }
374 408 : } // end of namespace drawinglayer
375 :
376 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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