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Unified Diff: src/effects/SkTestImageFilters.cpp

Issue 2094083002: remove DownSample imagefilter (Closed) Base URL: https://skia.googlesource.com/skia.git@master
Patch Set: Created 4 years, 6 months ago
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Index: src/effects/SkTestImageFilters.cpp
diff --git a/src/effects/SkTestImageFilters.cpp b/src/effects/SkTestImageFilters.cpp
deleted file mode 100755
index 208053b90edf00eefcd2c997a8d830d198a43bb6..0000000000000000000000000000000000000000
--- a/src/effects/SkTestImageFilters.cpp
+++ /dev/null
@@ -1,109 +0,0 @@
-/*
- * Copyright 2011 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-#include "SkTestImageFilters.h"
-#include "SkCanvas.h"
-#include "SkReadBuffer.h"
-#include "SkSpecialImage.h"
-#include "SkSpecialSurface.h"
-#include "SkWriteBuffer.h"
-
-///////////////////////////////////////////////////////////////////////////////
-
-sk_sp<SkImageFilter> SkDownSampleImageFilter::Make(SkScalar scale, sk_sp<SkImageFilter> input) {
- if (!SkScalarIsFinite(scale)) {
- return nullptr;
- }
- // we don't support scale in this range
- if (scale > SK_Scalar1 || scale <= 0) {
- return nullptr;
- }
- return sk_sp<SkImageFilter>(new SkDownSampleImageFilter(scale, std::move(input)));
-}
-
-sk_sp<SkSpecialImage> SkDownSampleImageFilter::onFilterImage(SkSpecialImage* source,
- const Context& ctx,
- SkIPoint* offset) const {
- if (fScale > SK_Scalar1 || fScale <= 0) {
- return nullptr;
- }
-
- int dstW = SkScalarRoundToInt(source->width() * fScale);
- int dstH = SkScalarRoundToInt(source->height() * fScale);
- if (dstW < 1) {
- dstW = 1;
- }
- if (dstH < 1) {
- dstH = 1;
- }
-
- sk_sp<SkSpecialImage> tmp;
-
- // downsample
- {
- const SkImageInfo info = SkImageInfo::MakeN32Premul(dstW, dstH);
-
- sk_sp<SkSpecialSurface> surf(source->makeSurface(info));
- if (!surf) {
- return nullptr;
- }
-
- SkCanvas* canvas = surf->getCanvas();
- SkASSERT(canvas);
-
- canvas->clear(0x0);
-
- SkPaint paint;
- paint.setXfermodeMode(SkXfermode::kSrcOver_Mode);
- paint.setFilterQuality(kLow_SkFilterQuality);
-
- canvas->scale(fScale, fScale);
- source->draw(canvas, 0, 0, &paint);
-
- tmp = surf->makeImageSnapshot();
- }
-
- // upscale
- {
- const SkImageInfo info = SkImageInfo::MakeN32Premul(source->width(), source->height());
-
- sk_sp<SkSpecialSurface> surf(source->makeSurface(info));
- if (!surf) {
- return nullptr;
- }
-
- SkCanvas* canvas = surf->getCanvas();
- SkASSERT(canvas);
-
- canvas->clear(0x0);
-
- SkPaint paint;
- paint.setXfermodeMode(SkXfermode::kSrcOver_Mode);
-
- canvas->scale(SkScalarInvert(fScale), SkScalarInvert(fScale));
- tmp->draw(canvas, 0, 0, &paint);
-
- return surf->makeImageSnapshot();
- }
-}
-
-sk_sp<SkFlattenable> SkDownSampleImageFilter::CreateProc(SkReadBuffer& buffer) {
- SK_IMAGEFILTER_UNFLATTEN_COMMON(common, 1);
- return Make(buffer.readScalar(), common.getInput(0));
-}
-
-void SkDownSampleImageFilter::flatten(SkWriteBuffer& buffer) const {
- this->INHERITED::flatten(buffer);
- buffer.writeScalar(fScale);
-}
-
-#ifndef SK_IGNORE_TO_STRING
-void SkDownSampleImageFilter::toString(SkString* str) const {
- str->appendf("SkDownSampleImageFilter: (");
- str->append(")");
-}
-#endif
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