Delete SkPageFlipper

src/images/SkPageFlipper.cpp

-
-/*
- * Copyright 2008 The Android Open Source Project
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-
-#include "SkPageFlipper.h"
-
-SkPageFlipper::SkPageFlipper() {
-    fWidth = 0;
-    fHeight = 0;
-    fDirty0 = &fDirty0Storage;
-    fDirty1 = &fDirty1Storage;
-
-    fDirty0->setEmpty();
-    fDirty1->setEmpty();
-}
-
-SkPageFlipper::SkPageFlipper(int width, int height) {
-    fWidth = width;
-    fHeight = height;
-    fDirty0 = &fDirty0Storage;
-    fDirty1 = &fDirty1Storage;
-
-    fDirty0->setRect(0, 0, width, height);
-    fDirty1->setEmpty();
-}
-
-void SkPageFlipper::resize(int width, int height) {
-    fWidth = width;
-    fHeight = height;
-
-    // this is the opposite of the constructors
-    fDirty1->setRect(0, 0, width, height);
-    fDirty0->setEmpty();
-}
-
-void SkPageFlipper::inval() {
-    fDirty1->setRect(0, 0, fWidth, fHeight);
-}
-
-void SkPageFlipper::inval(const SkIRect& rect) {
-    SkIRect r;
-    r.set(0, 0, fWidth, fHeight);
-    if (r.intersect(rect)) {
-        fDirty1->op(r, SkRegion::kUnion_Op);
-    }
-}
-
-void SkPageFlipper::inval(const SkRegion& rgn) {
-    SkRegion r;
-    r.setRect(0, 0, fWidth, fHeight);
-    if (r.op(rgn, SkRegion::kIntersect_Op)) {
-        fDirty1->op(r, SkRegion::kUnion_Op);
-    }
-}
-
-void SkPageFlipper::inval(const SkRect& rect, bool antialias) {
-    SkIRect r;
-    rect.round(&r);
-    if (antialias) {
-        r.inset(-1, -1);
-    }
-    this->inval(r);
-}
-
-const SkRegion& SkPageFlipper::update(SkRegion* copyBits) {
-    // Copy over anything new from page0 that isn't dirty in page1
-    copyBits->op(*fDirty0, *fDirty1, SkRegion::kDifference_Op);
-    SkTSwap<SkRegion*>(fDirty0, fDirty1);
-    fDirty1->setEmpty();
-    return *fDirty0;
-}