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| 1 // Copyright 2014 PDFium Authors. All rights reserved. | 1 // Copyright 2014 PDFium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com | 5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com |
| 6 | 6 |
| 7 #include <limits.h> | 7 #include <limits.h> |
| 8 | 8 |
| 9 #include <algorithm> | 9 #include <algorithm> |
| 10 | 10 |
| 11 #include "core/fxge/dib/dib_int.h" | 11 #include "core/fxge/dib/dib_int.h" |
| 12 #include "core/fxge/include/fx_dib.h" | 12 #include "core/fxge/fx_dib.h" |
| 13 | 13 |
| 14 namespace { | 14 namespace { |
| 15 | 15 |
| 16 bool SourceSizeWithinLimit(int width, int height) { | 16 bool SourceSizeWithinLimit(int width, int height) { |
| 17 const int kMaxProgressiveStretchPixels = 1000000; | 17 const int kMaxProgressiveStretchPixels = 1000000; |
| 18 return !height || width < kMaxProgressiveStretchPixels / height; | 18 return !height || width < kMaxProgressiveStretchPixels / height; |
| 19 } | 19 } |
| 20 | 20 |
| 21 FXDIB_Format GetStretchedFormat(const CFX_DIBSource& src) { | 21 FXDIB_Format GetStretchedFormat(const CFX_DIBSource& src) { |
| 22 FXDIB_Format format = src.GetFormat(); | 22 FXDIB_Format format = src.GetFormat(); |
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| 998 result_width); | 998 result_width); |
| 999 if (m_pMaskScanline) { | 999 if (m_pMaskScanline) { |
| 1000 m_pSource->m_pAlphaMask->DownSampleScanline( | 1000 m_pSource->m_pAlphaMask->DownSampleScanline( |
| 1001 src_y, m_pMaskScanline.get(), 1, m_DestWidth, m_bFlipX, | 1001 src_y, m_pMaskScanline.get(), 1, m_DestWidth, m_bFlipX, |
| 1002 m_ClipRect.left, result_width); | 1002 m_ClipRect.left, result_width); |
| 1003 } | 1003 } |
| 1004 m_pDest->ComposeScanline(dest_y, m_pScanline.get(), m_pMaskScanline.get()); | 1004 m_pDest->ComposeScanline(dest_y, m_pScanline.get(), m_pMaskScanline.get()); |
| 1005 } | 1005 } |
| 1006 return FALSE; | 1006 return FALSE; |
| 1007 } | 1007 } |
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