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1 /* |
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2 * Copyright 2012 Google Inc. |
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3 * |
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4 * Use of this source code is governed by a BSD-style license that can be |
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5 * found in the LICENSE file. |
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6 */ |
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7 |
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8 #include "SkImage_Base.h" |
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9 #include "SkImagePriv.h" |
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10 #include "SkPicture.h" |
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11 |
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12 class SkImage_Picture : public SkImage_Base { |
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13 public: |
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14 SkImage_Picture(SkPicture*); |
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15 virtual ~SkImage_Picture(); |
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16 |
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17 virtual void onDraw(SkCanvas*, SkScalar, SkScalar, const SkPaint*) SK_OVERRIDE; |
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18 virtual void onDrawRectToRect(SkCanvas*, const SkRect*, const SkRect&, const SkPaint*) SK_OVERRIDE; |
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19 |
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20 SkPicture* getPicture() { return fPicture; } |
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21 |
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22 private: |
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23 SkPicture* fPicture; |
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24 |
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25 typedef SkImage_Base INHERITED; |
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26 }; |
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27 |
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28 /////////////////////////////////////////////////////////////////////////////// |
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29 |
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30 SkImage_Picture::SkImage_Picture(SkPicture* pict) : INHERITED(pict->width(), pict->height()) { |
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31 pict->endRecording(); |
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32 pict->ref(); |
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33 fPicture = pict; |
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34 } |
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35 |
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36 SkImage_Picture::~SkImage_Picture() { |
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37 fPicture->unref(); |
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38 } |
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39 |
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40 void SkImage_Picture::onDraw(SkCanvas* canvas, SkScalar x, SkScalar y, |
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41 const SkPaint* paint) { |
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42 SkImagePrivDrawPicture(canvas, fPicture, x, y, paint); |
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43 } |
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44 |
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45 void SkImage_Picture::onDrawRectToRect(SkCanvas* canvas, const SkRect* src, const SkRect& dst, |
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46 const SkPaint* paint) { |
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47 SkImagePrivDrawPicture(canvas, fPicture, src, dst, paint); |
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48 } |
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49 |
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50 SkImage* SkNewImageFromPicture(const SkPicture* srcPicture) { |
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51 /** |
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52 * We want to snapshot the playback status of the picture, w/o affecting |
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53 * its ability to continue recording (if needed). |
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54 * |
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55 * Optimally this will shared as much data/buffers as it can with |
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56 * srcPicture, and srcPicture will perform a copy-on-write as needed if it |
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57 * needs to mutate them later on. |
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58 */ |
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59 SkAutoTUnref<SkPicture> playback(SkNEW_ARGS(SkPicture, (*srcPicture))); |
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60 |
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61 return SkNEW_ARGS(SkImage_Picture, (playback)); |
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62 } |
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63 |
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64 SkPicture* SkPictureImageGetPicture(SkImage* pictureImage) { |
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65 return static_cast<SkImage_Picture*>(pictureImage)->getPicture(); |
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66 } |