Split SkPictureReplacementPlayback out of SkPicturePlayback

src/core/SkPicturePlayback.cpp

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkCanvas.h"
 #include "SkPictureData.h"
 #include "SkPicturePlayback.h"
 #include "SkPictureRecord.h"
 #include "SkPictureStateTree.h"
 #include "SkReader32.h"
 #include "SkTDArray.h"
 #include "SkTypes.h"
 
-SkPicturePlayback::PlaybackReplacements::ReplacementInfo*
-SkPicturePlayback::PlaybackReplacements::push() {
-    SkDEBUGCODE(this->validate());
-    return fReplacements.push();
-}
-
-void SkPicturePlayback::PlaybackReplacements::freeAll() {
-    for (int i = 0; i < fReplacements.count(); ++i) {
-        SkDELETE(fReplacements[i].fBM);
-    }
-    fReplacements.reset();
-}
-
-#ifdef SK_DEBUG
-void SkPicturePlayback::PlaybackReplacements::validate() const {
-    // Check that the ranges are monotonically increasing and non-overlapping
-    if (fReplacements.count() > 0) {
-        SkASSERT(fReplacements[0].fStart < fReplacements[0].fStop);
-
-        for (int i = 1; i < fReplacements.count(); ++i) {
-            SkASSERT(fReplacements[i].fStart < fReplacements[i].fStop);
-            SkASSERT(fReplacements[i - 1].fStop < fReplacements[i].fStart);
-        }
-    }
-}
-#endif
-
-// TODO: Replace with hash or pass in "lastLookedUp" hint
-SkPicturePlayback::PlaybackReplacements::ReplacementInfo*
-SkPicturePlayback::PlaybackReplacements::lookupByStart(size_t start) {
-    SkDEBUGCODE(this->validate());
-    for (int i = 0; i < fReplacements.count(); ++i) {
-        if (start == fReplacements[i].fStart) {
-            return &fReplacements[i];
-        } else if (start < fReplacements[i].fStart) {
-            return NULL;  // the ranges are monotonically increasing and non-overlapping
-        }
-    }
-
-    return NULL;
-}
-
 /*
  * Read the next op code and chunk size from 'reader'. The returned size
  * is the entire size of the chunk (including the opcode). Thus, the
  * offset just prior to calling ReadOpAndSize + 'size' is the offset
  * to the next chunk's op code. This also means that the size of a chunk
  * with no arguments (just an opcode) will be 4.
  */
 DrawType SkPicturePlayback::ReadOpAndSize(SkReader32* reader, uint32_t* size) {
     uint32_t temp = reader->readInt();
     uint32_t op;
@@ skipping 61 matching lines @@
         if (0 == activeOpsList->numOps()) {
             return false;  // nothing to draw
         }
 
         fPictureData->fStateTree->initIterator(iter, activeOpsList->fOps, canvas);
     }
 
     return true;
 }
 
-bool SkPicturePlayback::replaceOps(SkPictureStateTree::Iterator* iter, 
-                                   SkReader32* reader, 
-                                   SkCanvas* canvas,
-                                   const SkMatrix& initialMatrix) {
-    if (NULL != fReplacements) {
-        // Potentially replace a block of operations with a single drawBitmap call
-        SkPicturePlayback::PlaybackReplacements::ReplacementInfo* temp =
-                                            fReplacements->lookupByStart(reader->offset());
-        if (NULL != temp) {
-            SkASSERT(NULL != temp->fBM);
-            SkASSERT(NULL != temp->fPaint);
-            canvas->save();
-            canvas->setMatrix(initialMatrix);
-            SkRect src = SkRect::Make(temp->fSrcRect);
-            SkRect dst = SkRect::MakeXYWH(temp->fPos.fX, temp->fPos.fY,
-                                          temp->fSrcRect.width(),
-                                          temp->fSrcRect.height());
-            canvas->drawBitmapRectToRect(*temp->fBM, &src, dst, temp->fPaint);
-            canvas->restore();
-
-            if (iter->isValid()) {
-                // This save is needed since the BBH will automatically issue
-                // a restore to balanced the saveLayer we're skipping
-                canvas->save();
-
-                // At this point we know that the PictureStateTree was aiming
-                // for some draw op within temp's saveLayer (although potentially
-                // in a separate saveLayer nested inside it).
-                // We need to skip all the operations inside temp's range
-                // along with all the associated state changes but update
-                // the state tree to the first operation outside temp's range.
-
-                uint32_t skipTo;
-                do {
-                    skipTo = iter->nextDraw();
-                    if (SkPictureStateTree::Iterator::kDrawComplete == skipTo) {
-                        break;
-                    }
-
-                    if (skipTo <= temp->fStop) {
-                        reader->setOffset(skipTo);
-                        uint32_t size;
-                        DrawType op = ReadOpAndSize(reader, &size);
-                        // Since we are relying on the normal SkPictureStateTree
-                        // playback we need to convert any nested saveLayer calls
-                        // it may issue into saves (so that all its internal
-                        // restores will be balanced).
-                        if (SAVE_LAYER == op) {
-                            canvas->save();
-                        }
-                    }
-                } while (skipTo <= temp->fStop);
-
-                if (SkPictureStateTree::Iterator::kDrawComplete == skipTo) {
-                    reader->setOffset(reader->size());      // skip to end
-                    return true;
-                }
-
-                reader->setOffset(skipTo);
-            } else {
-                reader->setOffset(temp->fStop);
-                uint32_t size;
-                SkDEBUGCODE(DrawType op = ) ReadOpAndSize(reader, &size);
-                SkASSERT(RESTORE == op);
-            }
-
-            return true;
-        }
-    }
-
-    return false;
-}
-
 // If 'iter' is valid use it to skip forward through the picture.
 void SkPicturePlayback::StepIterator(SkPictureStateTree::Iterator* iter, SkReader32* reader) {
     if (iter->isValid()) {
         uint32_t skipTo = iter->nextDraw();
         if (SkPictureStateTree::Iterator::kDrawComplete == skipTo) {
             reader->setOffset(reader->size());  // skip to end
         } else {
             reader->setOffset(skipTo);
         }
     }
@@ skipping 40 matching lines @@
     // Record this, so we can concat w/ it if we encounter a setMatrix()
     SkMatrix initialMatrix = canvas->getTotalMatrix();
 
     SkAutoCanvasRestore acr(canvas, false);
 
     while (!reader.eof()) {
         if (NULL != callback && callback->abortDrawing()) {
             return;
         }
 
-        if (this->replaceOps(&it, &reader, canvas, initialMatrix)) {
-            continue;
-        }
-
         fCurOffset = reader.offset();
         uint32_t size;
         DrawType op = ReadOpAndSize(&reader, &size);
         if (NOOP == op) {
             // NOOPs are to be ignored - do not propagate them any further
             SkipIterTo(&it, &reader, fCurOffset + size);
             continue;
         }
 
         this->handleOp(&reader, op, size, canvas, initialMatrix);
@@ skipping 309 matching lines @@
         case TRANSLATE: {
             SkScalar dx = reader->readScalar();
             SkScalar dy = reader->readScalar();
             canvas->translate(dx, dy);
         } break;
         default:
             SkASSERT(0);
     }
 }