epoger@google.com | ec3ed6a | 2011-07-28 14:26:00 +0000 | [diff] [blame] | 1 | |
| 2 | /* |
| 3 | * Copyright 2006 The Android Open Source Project |
| 4 | * |
| 5 | * Use of this source code is governed by a BSD-style license that can be |
| 6 | * found in the LICENSE file. |
| 7 | */ |
| 8 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 9 | #include "SkBlurMaskFilter.h" |
| 10 | #include "SkBlurMask.h" |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 11 | #include "SkFlattenableBuffers.h" |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 12 | #include "SkMaskFilter.h" |
humper@google.com | 7c5d7b7 | 2013-03-11 20:16:28 +0000 | [diff] [blame] | 13 | #include "SkBounder.h" |
| 14 | #include "SkRasterClip.h" |
| 15 | #include "SkRTConf.h" |
robertphillips@google.com | 0bd80fa | 2013-03-18 17:53:38 +0000 | [diff] [blame] | 16 | #include "SkStringUtils.h" |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 17 | |
| 18 | class SkBlurMaskFilterImpl : public SkMaskFilter { |
| 19 | public: |
reed@google.com | 03016a3 | 2011-08-12 14:59:59 +0000 | [diff] [blame] | 20 | SkBlurMaskFilterImpl(SkScalar radius, SkBlurMaskFilter::BlurStyle, |
| 21 | uint32_t flags); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 22 | |
| 23 | // overrides from SkMaskFilter |
reed@google.com | 30711b7 | 2012-12-18 19:18:39 +0000 | [diff] [blame] | 24 | virtual SkMask::Format getFormat() const SK_OVERRIDE; |
reed@google.com | 03016a3 | 2011-08-12 14:59:59 +0000 | [diff] [blame] | 25 | virtual bool filterMask(SkMask* dst, const SkMask& src, const SkMatrix&, |
reed@google.com | 30711b7 | 2012-12-18 19:18:39 +0000 | [diff] [blame] | 26 | SkIPoint* margin) const SK_OVERRIDE; |
skia.committer@gmail.com | 2e71f16 | 2013-03-12 07:12:32 +0000 | [diff] [blame] | 27 | |
bungeman@google.com | 18ac1ba | 2011-10-04 15:11:38 +0000 | [diff] [blame] | 28 | virtual BlurType asABlur(BlurInfo*) const SK_OVERRIDE; |
reed@google.com | 30711b7 | 2012-12-18 19:18:39 +0000 | [diff] [blame] | 29 | virtual void computeFastBounds(const SkRect&, SkRect*) const SK_OVERRIDE; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 30 | |
robertphillips@google.com | 0bd80fa | 2013-03-18 17:53:38 +0000 | [diff] [blame] | 31 | SkDEVCODE(virtual void toString(SkString* str) const SK_OVERRIDE;) |
djsollen@google.com | ba28d03 | 2012-03-26 17:57:35 +0000 | [diff] [blame] | 32 | SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(SkBlurMaskFilterImpl) |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 33 | |
reed@google.com | d729b3e | 2012-11-09 14:30:48 +0000 | [diff] [blame] | 34 | protected: |
reed@google.com | dab9b4f | 2012-11-19 16:45:14 +0000 | [diff] [blame] | 35 | virtual FilterReturn filterRectsToNine(const SkRect[], int count, const SkMatrix&, |
| 36 | const SkIRect& clipBounds, |
reed@google.com | 30711b7 | 2012-12-18 19:18:39 +0000 | [diff] [blame] | 37 | NinePatch*) const SK_OVERRIDE; |
skia.committer@gmail.com | 2e71f16 | 2013-03-12 07:12:32 +0000 | [diff] [blame] | 38 | |
| 39 | bool filterRectMask(SkMask* dstM, const SkRect& r, const SkMatrix& matrix, |
humper@google.com | 7c5d7b7 | 2013-03-11 20:16:28 +0000 | [diff] [blame] | 40 | SkIPoint* margin, SkMask::CreateMode createMode) const; |
skia.committer@gmail.com | 453995e | 2012-11-10 02:01:26 +0000 | [diff] [blame] | 41 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 42 | private: |
| 43 | SkScalar fRadius; |
| 44 | SkBlurMaskFilter::BlurStyle fBlurStyle; |
senorblanco@chromium.org | 038aff6 | 2010-12-06 23:45:58 +0000 | [diff] [blame] | 45 | uint32_t fBlurFlags; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 46 | |
| 47 | SkBlurMaskFilterImpl(SkFlattenableReadBuffer&); |
djsollen@google.com | 5492424 | 2012-03-29 15:18:04 +0000 | [diff] [blame] | 48 | virtual void flatten(SkFlattenableWriteBuffer&) const SK_OVERRIDE; |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 49 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 50 | typedef SkMaskFilter INHERITED; |
| 51 | }; |
| 52 | |
reed@google.com | 03016a3 | 2011-08-12 14:59:59 +0000 | [diff] [blame] | 53 | SkMaskFilter* SkBlurMaskFilter::Create(SkScalar radius, |
| 54 | SkBlurMaskFilter::BlurStyle style, |
| 55 | uint32_t flags) { |
reed@google.com | e582869 | 2012-01-11 14:07:27 +0000 | [diff] [blame] | 56 | // use !(radius > 0) instead of radius <= 0 to reject NaN values |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 57 | if (!(radius > 0) || (unsigned)style >= SkBlurMaskFilter::kBlurStyleCount |
reed@google.com | 03016a3 | 2011-08-12 14:59:59 +0000 | [diff] [blame] | 58 | || flags > SkBlurMaskFilter::kAll_BlurFlag) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 59 | return NULL; |
reed@google.com | 03016a3 | 2011-08-12 14:59:59 +0000 | [diff] [blame] | 60 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 61 | |
senorblanco@chromium.org | 038aff6 | 2010-12-06 23:45:58 +0000 | [diff] [blame] | 62 | return SkNEW_ARGS(SkBlurMaskFilterImpl, (radius, style, flags)); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 63 | } |
| 64 | |
reed@google.com | 03016a3 | 2011-08-12 14:59:59 +0000 | [diff] [blame] | 65 | /////////////////////////////////////////////////////////////////////////////// |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 66 | |
reed@google.com | 03016a3 | 2011-08-12 14:59:59 +0000 | [diff] [blame] | 67 | SkBlurMaskFilterImpl::SkBlurMaskFilterImpl(SkScalar radius, |
| 68 | SkBlurMaskFilter::BlurStyle style, |
senorblanco@chromium.org | 038aff6 | 2010-12-06 23:45:58 +0000 | [diff] [blame] | 69 | uint32_t flags) |
reed@google.com | 03016a3 | 2011-08-12 14:59:59 +0000 | [diff] [blame] | 70 | : fRadius(radius), fBlurStyle(style), fBlurFlags(flags) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 71 | #if 0 |
| 72 | fGamma = NULL; |
reed@google.com | 03016a3 | 2011-08-12 14:59:59 +0000 | [diff] [blame] | 73 | if (gammaScale) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 74 | fGamma = new U8[256]; |
| 75 | if (gammaScale > 0) |
| 76 | SkBlurMask::BuildSqrGamma(fGamma, gammaScale); |
| 77 | else |
| 78 | SkBlurMask::BuildSqrtGamma(fGamma, -gammaScale); |
| 79 | } |
| 80 | #endif |
| 81 | SkASSERT(radius >= 0); |
| 82 | SkASSERT((unsigned)style < SkBlurMaskFilter::kBlurStyleCount); |
senorblanco@chromium.org | 038aff6 | 2010-12-06 23:45:58 +0000 | [diff] [blame] | 83 | SkASSERT(flags <= SkBlurMaskFilter::kAll_BlurFlag); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 84 | } |
| 85 | |
reed@google.com | 30711b7 | 2012-12-18 19:18:39 +0000 | [diff] [blame] | 86 | SkMask::Format SkBlurMaskFilterImpl::getFormat() const { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 87 | return SkMask::kA8_Format; |
| 88 | } |
| 89 | |
reed@google.com | 03016a3 | 2011-08-12 14:59:59 +0000 | [diff] [blame] | 90 | bool SkBlurMaskFilterImpl::filterMask(SkMask* dst, const SkMask& src, |
reed@google.com | 30711b7 | 2012-12-18 19:18:39 +0000 | [diff] [blame] | 91 | const SkMatrix& matrix, |
| 92 | SkIPoint* margin) const{ |
senorblanco@chromium.org | 038aff6 | 2010-12-06 23:45:58 +0000 | [diff] [blame] | 93 | SkScalar radius; |
reed@google.com | 03016a3 | 2011-08-12 14:59:59 +0000 | [diff] [blame] | 94 | if (fBlurFlags & SkBlurMaskFilter::kIgnoreTransform_BlurFlag) { |
senorblanco@chromium.org | 038aff6 | 2010-12-06 23:45:58 +0000 | [diff] [blame] | 95 | radius = fRadius; |
reed@google.com | 03016a3 | 2011-08-12 14:59:59 +0000 | [diff] [blame] | 96 | } else { |
senorblanco@chromium.org | 038aff6 | 2010-12-06 23:45:58 +0000 | [diff] [blame] | 97 | radius = matrix.mapRadius(fRadius); |
reed@google.com | 03016a3 | 2011-08-12 14:59:59 +0000 | [diff] [blame] | 98 | } |
senorblanco@chromium.org | 038aff6 | 2010-12-06 23:45:58 +0000 | [diff] [blame] | 99 | |
reed@android.com | 3555591 | 2009-03-16 18:46:55 +0000 | [diff] [blame] | 100 | // To avoid unseemly allocation requests (esp. for finite platforms like |
| 101 | // handset) we limit the radius so something manageable. (as opposed to |
| 102 | // a request like 10,000) |
| 103 | static const SkScalar MAX_RADIUS = SkIntToScalar(128); |
| 104 | radius = SkMinScalar(radius, MAX_RADIUS); |
reed@google.com | 03016a3 | 2011-08-12 14:59:59 +0000 | [diff] [blame] | 105 | SkBlurMask::Quality blurQuality = |
rmistry@google.com | fbfcd56 | 2012-08-23 18:09:54 +0000 | [diff] [blame] | 106 | (fBlurFlags & SkBlurMaskFilter::kHighQuality_BlurFlag) ? |
reed@google.com | 03016a3 | 2011-08-12 14:59:59 +0000 | [diff] [blame] | 107 | SkBlurMask::kHigh_Quality : SkBlurMask::kLow_Quality; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 108 | |
senorblanco@chromium.org | 0cb6e53 | 2012-11-29 19:00:22 +0000 | [diff] [blame] | 109 | #ifndef SK_DISABLE_SEPARABLE_MASK_BLUR |
senorblanco@chromium.org | 91f489a | 2012-11-29 17:09:27 +0000 | [diff] [blame] | 110 | return SkBlurMask::BlurSeparable(dst, src, radius, (SkBlurMask::Style)fBlurStyle, |
| 111 | blurQuality, margin); |
| 112 | #else |
| 113 | return SkBlurMask::Blur(dst, src, radius, (SkBlurMask::Style)fBlurStyle, |
| 114 | blurQuality, margin); |
| 115 | #endif |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 116 | } |
| 117 | |
humper@google.com | 7c5d7b7 | 2013-03-11 20:16:28 +0000 | [diff] [blame] | 118 | bool SkBlurMaskFilterImpl::filterRectMask(SkMask* dst, const SkRect& r, |
| 119 | const SkMatrix& matrix, |
| 120 | SkIPoint* margin, SkMask::CreateMode createMode) const{ |
| 121 | SkScalar radius; |
| 122 | if (fBlurFlags & SkBlurMaskFilter::kIgnoreTransform_BlurFlag) { |
| 123 | radius = fRadius; |
| 124 | } else { |
| 125 | radius = matrix.mapRadius(fRadius); |
| 126 | } |
| 127 | |
| 128 | // To avoid unseemly allocation requests (esp. for finite platforms like |
| 129 | // handset) we limit the radius so something manageable. (as opposed to |
| 130 | // a request like 10,000) |
| 131 | static const SkScalar MAX_RADIUS = SkIntToScalar(128); |
| 132 | radius = SkMinScalar(radius, MAX_RADIUS); |
skia.committer@gmail.com | 2e71f16 | 2013-03-12 07:12:32 +0000 | [diff] [blame] | 133 | |
humper@google.com | 7c5d7b7 | 2013-03-11 20:16:28 +0000 | [diff] [blame] | 134 | return SkBlurMask::BlurRect(dst, r, radius, (SkBlurMask::Style)fBlurStyle, |
| 135 | margin, createMode); |
| 136 | } |
| 137 | |
reed@google.com | d729b3e | 2012-11-09 14:30:48 +0000 | [diff] [blame] | 138 | #include "SkCanvas.h" |
| 139 | |
reed@google.com | dab9b4f | 2012-11-19 16:45:14 +0000 | [diff] [blame] | 140 | static bool drawRectsIntoMask(const SkRect rects[], int count, SkMask* mask) { |
| 141 | rects[0].roundOut(&mask->fBounds); |
reed@google.com | d729b3e | 2012-11-09 14:30:48 +0000 | [diff] [blame] | 142 | mask->fRowBytes = SkAlign4(mask->fBounds.width()); |
| 143 | mask->fFormat = SkMask::kA8_Format; |
| 144 | size_t size = mask->computeImageSize(); |
| 145 | mask->fImage = SkMask::AllocImage(size); |
| 146 | if (NULL == mask->fImage) { |
| 147 | return false; |
| 148 | } |
| 149 | sk_bzero(mask->fImage, size); |
| 150 | |
| 151 | SkBitmap bitmap; |
| 152 | bitmap.setConfig(SkBitmap::kA8_Config, |
| 153 | mask->fBounds.width(), mask->fBounds.height(), |
| 154 | mask->fRowBytes); |
| 155 | bitmap.setPixels(mask->fImage); |
| 156 | |
| 157 | SkCanvas canvas(bitmap); |
reed@google.com | dab9b4f | 2012-11-19 16:45:14 +0000 | [diff] [blame] | 158 | canvas.translate(-SkIntToScalar(mask->fBounds.left()), |
| 159 | -SkIntToScalar(mask->fBounds.top())); |
reed@google.com | d729b3e | 2012-11-09 14:30:48 +0000 | [diff] [blame] | 160 | |
| 161 | SkPaint paint; |
| 162 | paint.setAntiAlias(true); |
| 163 | |
reed@google.com | dab9b4f | 2012-11-19 16:45:14 +0000 | [diff] [blame] | 164 | if (1 == count) { |
| 165 | canvas.drawRect(rects[0], paint); |
| 166 | } else { |
| 167 | // todo: do I need a fast way to do this? |
| 168 | SkPath path; |
| 169 | path.addRect(rects[0]); |
| 170 | path.addRect(rects[1]); |
| 171 | path.setFillType(SkPath::kEvenOdd_FillType); |
| 172 | canvas.drawPath(path, paint); |
| 173 | } |
reed@google.com | d729b3e | 2012-11-09 14:30:48 +0000 | [diff] [blame] | 174 | return true; |
| 175 | } |
| 176 | |
reed@google.com | f276fa7 | 2012-11-21 14:14:10 +0000 | [diff] [blame] | 177 | static bool rect_exceeds(const SkRect& r, SkScalar v) { |
| 178 | return r.fLeft < -v || r.fTop < -v || r.fRight > v || r.fBottom > v || |
| 179 | r.width() > v || r.height() > v; |
reed@google.com | 07784a0 | 2012-11-19 21:09:14 +0000 | [diff] [blame] | 180 | } |
| 181 | |
humper@google.com | 7c5d7b7 | 2013-03-11 20:16:28 +0000 | [diff] [blame] | 182 | #ifdef SK_IGNORE_FAST_RECT_BLUR |
humper@google.com | e86af1f | 2013-03-11 21:23:36 +0000 | [diff] [blame] | 183 | SK_CONF_DECLARE( bool, c_analyticBlurNinepatch, "mask.filter.analyticNinePatch", false, "Use the faster analytic blur approach for ninepatch rects" ); |
humper@google.com | 7c5d7b7 | 2013-03-11 20:16:28 +0000 | [diff] [blame] | 184 | #else |
humper@google.com | e86af1f | 2013-03-11 21:23:36 +0000 | [diff] [blame] | 185 | SK_CONF_DECLARE( bool, c_analyticBlurNinepatch, "mask.filter.analyticNinePatch", true, "Use the faster analytic blur approach for ninepatch rects" ); |
humper@google.com | 7c5d7b7 | 2013-03-11 20:16:28 +0000 | [diff] [blame] | 186 | #endif |
humper@google.com | 7c5d7b7 | 2013-03-11 20:16:28 +0000 | [diff] [blame] | 187 | |
reed@google.com | d729b3e | 2012-11-09 14:30:48 +0000 | [diff] [blame] | 188 | SkMaskFilter::FilterReturn |
reed@google.com | dab9b4f | 2012-11-19 16:45:14 +0000 | [diff] [blame] | 189 | SkBlurMaskFilterImpl::filterRectsToNine(const SkRect rects[], int count, |
| 190 | const SkMatrix& matrix, |
| 191 | const SkIRect& clipBounds, |
reed@google.com | 30711b7 | 2012-12-18 19:18:39 +0000 | [diff] [blame] | 192 | NinePatch* patch) const { |
reed@google.com | dab9b4f | 2012-11-19 16:45:14 +0000 | [diff] [blame] | 193 | if (count < 1 || count > 2) { |
| 194 | return kUnimplemented_FilterReturn; |
| 195 | } |
skia.committer@gmail.com | 3458716 | 2012-11-20 02:01:23 +0000 | [diff] [blame] | 196 | |
reed@google.com | 57850b9 | 2012-12-17 21:20:53 +0000 | [diff] [blame] | 197 | // TODO: report correct metrics for innerstyle, where we do not grow the |
| 198 | // total bounds, but we do need an inset the size of our blur-radius |
| 199 | if (SkBlurMaskFilter::kInner_BlurStyle == fBlurStyle) { |
| 200 | return kUnimplemented_FilterReturn; |
| 201 | } |
| 202 | |
reed@google.com | 07784a0 | 2012-11-19 21:09:14 +0000 | [diff] [blame] | 203 | // TODO: take clipBounds into account to limit our coordinates up front |
| 204 | // for now, just skip too-large src rects (to take the old code path). |
reed@google.com | f276fa7 | 2012-11-21 14:14:10 +0000 | [diff] [blame] | 205 | if (rect_exceeds(rects[0], SkIntToScalar(32767))) { |
reed@google.com | 07784a0 | 2012-11-19 21:09:14 +0000 | [diff] [blame] | 206 | return kUnimplemented_FilterReturn; |
| 207 | } |
skia.committer@gmail.com | 3458716 | 2012-11-20 02:01:23 +0000 | [diff] [blame] | 208 | |
reed@google.com | d729b3e | 2012-11-09 14:30:48 +0000 | [diff] [blame] | 209 | SkIPoint margin; |
| 210 | SkMask srcM, dstM; |
reed@google.com | dab9b4f | 2012-11-19 16:45:14 +0000 | [diff] [blame] | 211 | rects[0].roundOut(&srcM.fBounds); |
reed@google.com | d729b3e | 2012-11-09 14:30:48 +0000 | [diff] [blame] | 212 | srcM.fImage = NULL; |
| 213 | srcM.fFormat = SkMask::kA8_Format; |
| 214 | srcM.fRowBytes = 0; |
skia.committer@gmail.com | 2e71f16 | 2013-03-12 07:12:32 +0000 | [diff] [blame] | 215 | |
humper@google.com | 7c5d7b7 | 2013-03-11 20:16:28 +0000 | [diff] [blame] | 216 | bool filterResult = false; |
| 217 | if (count == 1 && c_analyticBlurNinepatch) { |
| 218 | // special case for fast rect blur |
| 219 | // don't actually do the blur the first time, just compute the correct size |
skia.committer@gmail.com | 2e71f16 | 2013-03-12 07:12:32 +0000 | [diff] [blame] | 220 | filterResult = this->filterRectMask(&dstM, rects[0], matrix, &margin, |
humper@google.com | 7c5d7b7 | 2013-03-11 20:16:28 +0000 | [diff] [blame] | 221 | SkMask::kJustComputeBounds_CreateMode); |
| 222 | } else { |
| 223 | filterResult = this->filterMask(&dstM, srcM, matrix, &margin); |
| 224 | } |
skia.committer@gmail.com | 2e71f16 | 2013-03-12 07:12:32 +0000 | [diff] [blame] | 225 | |
humper@google.com | 7c5d7b7 | 2013-03-11 20:16:28 +0000 | [diff] [blame] | 226 | if (!filterResult) { |
reed@google.com | d729b3e | 2012-11-09 14:30:48 +0000 | [diff] [blame] | 227 | return kFalse_FilterReturn; |
| 228 | } |
| 229 | |
| 230 | /* |
| 231 | * smallR is the smallest version of 'rect' that will still guarantee that |
| 232 | * we get the same blur results on all edges, plus 1 center row/col that is |
| 233 | * representative of the extendible/stretchable edges of the ninepatch. |
| 234 | * Since our actual edge may be fractional we inset 1 more to be sure we |
| 235 | * don't miss any interior blur. |
| 236 | * x is an added pixel of blur, and { and } are the (fractional) edge |
| 237 | * pixels from the original rect. |
| 238 | * |
| 239 | * x x { x x .... x x } x x |
| 240 | * |
| 241 | * Thus, in this case, we inset by a total of 5 (on each side) beginning |
| 242 | * with our outer-rect (dstM.fBounds) |
| 243 | */ |
reed@google.com | dab9b4f | 2012-11-19 16:45:14 +0000 | [diff] [blame] | 244 | SkRect smallR[2]; |
| 245 | SkIPoint center; |
| 246 | |
| 247 | // +2 is from +1 for each edge (to account for possible fractional edges |
| 248 | int smallW = dstM.fBounds.width() - srcM.fBounds.width() + 2; |
| 249 | int smallH = dstM.fBounds.height() - srcM.fBounds.height() + 2; |
| 250 | SkIRect innerIR; |
| 251 | |
| 252 | if (1 == count) { |
| 253 | innerIR = srcM.fBounds; |
| 254 | center.set(smallW, smallH); |
| 255 | } else { |
| 256 | SkASSERT(2 == count); |
| 257 | rects[1].roundIn(&innerIR); |
| 258 | center.set(smallW + (innerIR.left() - srcM.fBounds.left()), |
| 259 | smallH + (innerIR.top() - srcM.fBounds.top())); |
reed@google.com | d729b3e | 2012-11-09 14:30:48 +0000 | [diff] [blame] | 260 | } |
| 261 | |
reed@google.com | dab9b4f | 2012-11-19 16:45:14 +0000 | [diff] [blame] | 262 | // +1 so we get a clean, stretchable, center row/col |
| 263 | smallW += 1; |
| 264 | smallH += 1; |
| 265 | |
| 266 | // we want the inset amounts to be integral, so we don't change any |
| 267 | // fractional phase on the fRight or fBottom of our smallR. |
| 268 | const SkScalar dx = SkIntToScalar(innerIR.width() - smallW); |
| 269 | const SkScalar dy = SkIntToScalar(innerIR.height() - smallH); |
| 270 | if (dx < 0 || dy < 0) { |
| 271 | // we're too small, relative to our blur, to break into nine-patch, |
| 272 | // so we ask to have our normal filterMask() be called. |
| 273 | return kUnimplemented_FilterReturn; |
| 274 | } |
| 275 | |
| 276 | smallR[0].set(rects[0].left(), rects[0].top(), rects[0].right() - dx, rects[0].bottom() - dy); |
| 277 | SkASSERT(!smallR[0].isEmpty()); |
| 278 | if (2 == count) { |
| 279 | smallR[1].set(rects[1].left(), rects[1].top(), |
| 280 | rects[1].right() - dx, rects[1].bottom() - dy); |
| 281 | SkASSERT(!smallR[1].isEmpty()); |
| 282 | } |
| 283 | |
humper@google.com | 7c5d7b7 | 2013-03-11 20:16:28 +0000 | [diff] [blame] | 284 | if (count > 1 || !c_analyticBlurNinepatch) { |
| 285 | if (!drawRectsIntoMask(smallR, count, &srcM)) { |
| 286 | return kFalse_FilterReturn; |
| 287 | } |
reed@google.com | d729b3e | 2012-11-09 14:30:48 +0000 | [diff] [blame] | 288 | |
humper@google.com | 7c5d7b7 | 2013-03-11 20:16:28 +0000 | [diff] [blame] | 289 | SkAutoMaskFreeImage amf(srcM.fImage); |
reed@google.com | d198a5b | 2012-11-27 15:18:04 +0000 | [diff] [blame] | 290 | |
humper@google.com | 7c5d7b7 | 2013-03-11 20:16:28 +0000 | [diff] [blame] | 291 | if (!this->filterMask(&patch->fMask, srcM, matrix, &margin)) { |
| 292 | return kFalse_FilterReturn; |
| 293 | } |
| 294 | } else { |
skia.committer@gmail.com | 2e71f16 | 2013-03-12 07:12:32 +0000 | [diff] [blame] | 295 | if (!this->filterRectMask(&patch->fMask, smallR[0], matrix, &margin, |
humper@google.com | 7c5d7b7 | 2013-03-11 20:16:28 +0000 | [diff] [blame] | 296 | SkMask::kComputeBoundsAndRenderImage_CreateMode)) { |
| 297 | return kFalse_FilterReturn; |
| 298 | } |
reed@google.com | d729b3e | 2012-11-09 14:30:48 +0000 | [diff] [blame] | 299 | } |
reed@google.com | dab9b4f | 2012-11-19 16:45:14 +0000 | [diff] [blame] | 300 | patch->fMask.fBounds.offsetTo(0, 0); |
| 301 | patch->fOuterRect = dstM.fBounds; |
| 302 | patch->fCenter = center; |
reed@google.com | d729b3e | 2012-11-09 14:30:48 +0000 | [diff] [blame] | 303 | return kTrue_FilterReturn; |
| 304 | } |
| 305 | |
reed@google.com | 30711b7 | 2012-12-18 19:18:39 +0000 | [diff] [blame] | 306 | void SkBlurMaskFilterImpl::computeFastBounds(const SkRect& src, |
| 307 | SkRect* dst) const { |
reed@google.com | 9efd9a0 | 2012-01-30 15:41:43 +0000 | [diff] [blame] | 308 | dst->set(src.fLeft - fRadius, src.fTop - fRadius, |
| 309 | src.fRight + fRadius, src.fBottom + fRadius); |
| 310 | } |
| 311 | |
reed@google.com | 03016a3 | 2011-08-12 14:59:59 +0000 | [diff] [blame] | 312 | SkBlurMaskFilterImpl::SkBlurMaskFilterImpl(SkFlattenableReadBuffer& buffer) |
| 313 | : SkMaskFilter(buffer) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 314 | fRadius = buffer.readScalar(); |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 315 | fBlurStyle = (SkBlurMaskFilter::BlurStyle)buffer.readInt(); |
| 316 | fBlurFlags = buffer.readUInt() & SkBlurMaskFilter::kAll_BlurFlag; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 317 | SkASSERT(fRadius >= 0); |
| 318 | SkASSERT((unsigned)fBlurStyle < SkBlurMaskFilter::kBlurStyleCount); |
| 319 | } |
| 320 | |
djsollen@google.com | 5492424 | 2012-03-29 15:18:04 +0000 | [diff] [blame] | 321 | void SkBlurMaskFilterImpl::flatten(SkFlattenableWriteBuffer& buffer) const { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 322 | this->INHERITED::flatten(buffer); |
| 323 | buffer.writeScalar(fRadius); |
djsollen@google.com | c73dd5c | 2012-08-07 15:54:32 +0000 | [diff] [blame] | 324 | buffer.writeInt(fBlurStyle); |
| 325 | buffer.writeUInt(fBlurFlags); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 326 | } |
| 327 | |
reed@google.com | 2b75f42 | 2011-07-07 13:43:38 +0000 | [diff] [blame] | 328 | static const SkMaskFilter::BlurType gBlurStyle2BlurType[] = { |
| 329 | SkMaskFilter::kNormal_BlurType, |
| 330 | SkMaskFilter::kSolid_BlurType, |
| 331 | SkMaskFilter::kOuter_BlurType, |
| 332 | SkMaskFilter::kInner_BlurType, |
| 333 | }; |
| 334 | |
bungeman@google.com | 18ac1ba | 2011-10-04 15:11:38 +0000 | [diff] [blame] | 335 | SkMaskFilter::BlurType SkBlurMaskFilterImpl::asABlur(BlurInfo* info) const { |
reed@google.com | 2b75f42 | 2011-07-07 13:43:38 +0000 | [diff] [blame] | 336 | if (info) { |
| 337 | info->fRadius = fRadius; |
| 338 | info->fIgnoreTransform = SkToBool(fBlurFlags & SkBlurMaskFilter::kIgnoreTransform_BlurFlag); |
| 339 | info->fHighQuality = SkToBool(fBlurFlags & SkBlurMaskFilter::kHighQuality_BlurFlag); |
| 340 | } |
| 341 | return gBlurStyle2BlurType[fBlurStyle]; |
| 342 | } |
| 343 | |
robertphillips@google.com | 0bd80fa | 2013-03-18 17:53:38 +0000 | [diff] [blame] | 344 | #ifdef SK_DEVELOPER |
| 345 | void SkBlurMaskFilterImpl::toString(SkString* str) const { |
| 346 | str->append("SkBlurMaskFilterImpl: ("); |
| 347 | |
| 348 | str->append("radius: "); |
| 349 | str->appendScalar(fRadius); |
| 350 | str->append(" "); |
| 351 | |
| 352 | static const char* gStyleName[SkBlurMaskFilter::kBlurStyleCount] = { |
| 353 | "normal", "solid", "outer", "inner" |
| 354 | }; |
| 355 | |
| 356 | str->appendf("style: %s ", gStyleName[fBlurStyle]); |
| 357 | str->append("flags: ("); |
| 358 | if (fBlurFlags) { |
| 359 | bool needSeparator = false; |
| 360 | SkAddFlagToString(str, |
| 361 | SkToBool(fBlurFlags & SkBlurMaskFilter::kIgnoreTransform_BlurFlag), |
| 362 | "IgnoreXform", &needSeparator); |
| 363 | SkAddFlagToString(str, |
| 364 | SkToBool(fBlurFlags & SkBlurMaskFilter::kHighQuality_BlurFlag), |
| 365 | "HighQuality", &needSeparator); |
| 366 | } else { |
| 367 | str->append("None"); |
| 368 | } |
| 369 | str->append("))"); |
| 370 | } |
| 371 | #endif |
| 372 | |
caryclark@google.com | d26147a | 2011-12-15 14:16:43 +0000 | [diff] [blame] | 373 | SK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_START(SkBlurMaskFilter) |
| 374 | SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkBlurMaskFilterImpl) |
| 375 | SK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_END |