senorblanco@chromium.org | f1369ce | 2012-08-20 14:53:21 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2012 The Android Open Source Project |
| 3 | * |
| 4 | * Use of this source code is governed by a BSD-style license that can be |
| 5 | * found in the LICENSE file. |
| 6 | */ |
| 7 | |
| 8 | #include "SkBitmapSource.h" |
senorblanco@chromium.org | e93e1db | 2013-12-09 18:31:42 +0000 | [diff] [blame] | 9 | #include "SkDevice.h" |
| 10 | #include "SkCanvas.h" |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame] | 11 | #include "SkReadBuffer.h" |
| 12 | #include "SkWriteBuffer.h" |
senorblanco@chromium.org | e93e1db | 2013-12-09 18:31:42 +0000 | [diff] [blame] | 13 | #include "SkValidationUtils.h" |
senorblanco@chromium.org | f1369ce | 2012-08-20 14:53:21 +0000 | [diff] [blame] | 14 | |
senorblanco@chromium.org | 9f25de7 | 2012-10-10 20:36:13 +0000 | [diff] [blame] | 15 | SkBitmapSource::SkBitmapSource(const SkBitmap& bitmap) |
commit-bot@chromium.org | ce33d60 | 2013-11-25 21:46:31 +0000 | [diff] [blame] | 16 | : INHERITED(0, 0), |
senorblanco@chromium.org | e93e1db | 2013-12-09 18:31:42 +0000 | [diff] [blame] | 17 | fBitmap(bitmap), |
| 18 | fSrcRect(SkRect::MakeWH(SkIntToScalar(bitmap.width()), |
| 19 | SkIntToScalar(bitmap.height()))), |
| 20 | fDstRect(fSrcRect) { |
| 21 | } |
| 22 | |
| 23 | SkBitmapSource::SkBitmapSource(const SkBitmap& bitmap, const SkRect& srcRect, const SkRect& dstRect) |
| 24 | : INHERITED(0, 0), |
| 25 | fBitmap(bitmap), |
| 26 | fSrcRect(srcRect), |
| 27 | fDstRect(dstRect) { |
senorblanco@chromium.org | f1369ce | 2012-08-20 14:53:21 +0000 | [diff] [blame] | 28 | } |
| 29 | |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame] | 30 | SkBitmapSource::SkBitmapSource(SkReadBuffer& buffer) |
commit-bot@chromium.org | ce33d60 | 2013-11-25 21:46:31 +0000 | [diff] [blame] | 31 | : INHERITED(0, buffer) { |
senorblanco@chromium.org | f1369ce | 2012-08-20 14:53:21 +0000 | [diff] [blame] | 32 | fBitmap.unflatten(buffer); |
senorblanco@chromium.org | e93e1db | 2013-12-09 18:31:42 +0000 | [diff] [blame] | 33 | buffer.readRect(&fSrcRect); |
| 34 | buffer.readRect(&fDstRect); |
commit-bot@chromium.org | 658e1b3 | 2013-12-17 21:32:42 +0000 | [diff] [blame] | 35 | buffer.validate(buffer.isValid() && SkIsValidRect(fSrcRect) && SkIsValidRect(fDstRect)); |
senorblanco@chromium.org | f1369ce | 2012-08-20 14:53:21 +0000 | [diff] [blame] | 36 | } |
| 37 | |
commit-bot@chromium.org | 8b0e8ac | 2014-01-30 18:58:24 +0000 | [diff] [blame] | 38 | void SkBitmapSource::flatten(SkWriteBuffer& buffer) const { |
senorblanco@chromium.org | f1369ce | 2012-08-20 14:53:21 +0000 | [diff] [blame] | 39 | this->INHERITED::flatten(buffer); |
| 40 | fBitmap.flatten(buffer); |
senorblanco@chromium.org | e93e1db | 2013-12-09 18:31:42 +0000 | [diff] [blame] | 41 | buffer.writeRect(fSrcRect); |
| 42 | buffer.writeRect(fDstRect); |
senorblanco@chromium.org | f1369ce | 2012-08-20 14:53:21 +0000 | [diff] [blame] | 43 | } |
| 44 | |
senorblanco@chromium.org | e93e1db | 2013-12-09 18:31:42 +0000 | [diff] [blame] | 45 | bool SkBitmapSource::onFilterImage(Proxy* proxy, const SkBitmap&, const SkMatrix& matrix, |
commit-bot@chromium.org | ae761f7 | 2014-02-05 22:32:02 +0000 | [diff] [blame] | 46 | SkBitmap* result, SkIPoint* offset) const { |
senorblanco@chromium.org | e93e1db | 2013-12-09 18:31:42 +0000 | [diff] [blame] | 47 | SkRect bounds, dstRect; |
| 48 | fBitmap.getBounds(&bounds); |
| 49 | matrix.mapRect(&dstRect, fDstRect); |
| 50 | if (fSrcRect == bounds && dstRect == bounds) { |
| 51 | // No regions cropped out or resized; return entire bitmap. |
| 52 | *result = fBitmap; |
senorblanco@chromium.org | 6776b82 | 2014-01-03 21:48:22 +0000 | [diff] [blame] | 53 | offset->fX = offset->fY = 0; |
senorblanco@chromium.org | e93e1db | 2013-12-09 18:31:42 +0000 | [diff] [blame] | 54 | return true; |
| 55 | } |
| 56 | SkIRect dstIRect; |
| 57 | dstRect.roundOut(&dstIRect); |
| 58 | |
| 59 | SkAutoTUnref<SkBaseDevice> device(proxy->createDevice(dstIRect.width(), dstIRect.height())); |
| 60 | if (NULL == device.get()) { |
| 61 | return false; |
| 62 | } |
| 63 | |
| 64 | SkCanvas canvas(device.get()); |
| 65 | SkPaint paint; |
| 66 | |
| 67 | // Subtract off the integer component of the translation (will be applied in loc, below). |
| 68 | dstRect.offset(-SkIntToScalar(dstIRect.fLeft), -SkIntToScalar(dstIRect.fTop)); |
| 69 | paint.setXfermodeMode(SkXfermode::kSrc_Mode); |
| 70 | // FIXME: this probably shouldn't be necessary, but drawBitmapRectToRect asserts |
| 71 | // None filtering when it's translate-only |
| 72 | paint.setFilterLevel( |
| 73 | fSrcRect.width() == dstRect.width() && fSrcRect.height() == dstRect.height() ? |
| 74 | SkPaint::kNone_FilterLevel : SkPaint::kMedium_FilterLevel); |
| 75 | canvas.drawBitmapRectToRect(fBitmap, &fSrcRect, dstRect, &paint); |
| 76 | |
| 77 | *result = device.get()->accessBitmap(false); |
senorblanco@chromium.org | 6776b82 | 2014-01-03 21:48:22 +0000 | [diff] [blame] | 78 | offset->fX = dstIRect.fLeft; |
| 79 | offset->fY = dstIRect.fTop; |
senorblanco@chromium.org | f1369ce | 2012-08-20 14:53:21 +0000 | [diff] [blame] | 80 | return true; |
| 81 | } |
senorblanco@chromium.org | 336d1d7 | 2014-01-27 21:03:17 +0000 | [diff] [blame] | 82 | |
| 83 | void SkBitmapSource::computeFastBounds(const SkRect&, SkRect* dst) const { |
| 84 | *dst = fDstRect; |
| 85 | } |
senorblanco@chromium.org | c4b12f1 | 2014-02-05 17:51:22 +0000 | [diff] [blame] | 86 | |
| 87 | bool SkBitmapSource::onFilterBounds(const SkIRect& src, const SkMatrix& ctm, |
| 88 | SkIRect* dst) const { |
| 89 | *dst = src; |
| 90 | return true; |
| 91 | } |