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