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2018-06-29Better determine if ICC colorspaces can be used for blending.Lei Zhang
Implement CPDF_ColorSpace::IsNormal() and check it when rendering. While IsNormal() is trivial for most colorspaces, it needs to be implemented separately for ICC colorspaces. This fixes a rendering regression from commit 1c0de38c. BUG=chromium:847346 Change-Id: Iaafed3f8ee40b26ac2cbfbdf2251407f7935311b Reviewed-on: https://pdfium-review.googlesource.com/36571 Reviewed-by: Henrique Nakashima <hnakashima@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2018-06-26Add some more consts to unowned pointers.Tom Sepez
Ideally, unowned ptrs might well be const, as updating something through an unowned reference is best avoided. Change-Id: Ida8111ffe0ee1e30bbf6b7718b0929dfb5cafdff Reviewed-on: https://pdfium-review.googlesource.com/36050 Reviewed-by: Lei Zhang <thestig@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
2018-06-25Combine common code into CPDF_RenderStatus::ClipPattern().Lei Zhang
Change-Id: I53ce4ee699644b0a30132e642b8f466cd9b6e7b1 Reviewed-on: https://pdfium-review.googlesource.com/35972 Reviewed-by: Henrique Nakashima <hnakashima@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2018-06-25Make DrawRadialShading() slightly more compact.Lei Zhang
Change-Id: Ic0e528d01338a349deb1ee5a91372b132959e4ae Reviewed-on: https://pdfium-review.googlesource.com/35971 Reviewed-by: Henrique Nakashima <hnakashima@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2018-06-21Avoid const-refs to implicitly constructed strings.Tom Sepez
Because the invisible temporary goes out of scope at the next semicolon. Also avoid returning const string references since the cost is low to properly keep the string alive. Change-Id: Id283e4fd99f79a02d79d739a533a4ce05e831e2a Reviewed-on: https://pdfium-review.googlesource.com/35710 Commit-Queue: dsinclair <dsinclair@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org>
2018-06-13Remove CFX_FixedBufGrow from cpdf_renderstatus.cppNicolas Pena
Bug: pdfium:177 Change-Id: I58fe339d5a0a962215c5cb29c963b37b86832637 Reviewed-on: https://pdfium-review.googlesource.com/35113 Commit-Queue: dsinclair <dsinclair@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org>
2018-06-13Remove almost all usages of CFX_FixedBufGrow from cpdf_dibsource.cppNicolas Pena
This CL removes all the usages of CFX_FixedBufGrow, except for one that would cause performance issues for our corpus tests. Bug: pdfium:177 Change-Id: I0ad76c14f713b116cf7dce50606554e3b03d9f2c Reviewed-on: https://pdfium-review.googlesource.com/35150 Commit-Queue: Nicolás Peña Moreno <npm@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org>
2018-06-07Rename CPDF_PageObjectHolder::GetFormDict() to GetDict().Henrique Nakashima
Renamed the underlying member m_pFormDict as well. These names are misleading, as a page also uses the same field as the page dict. Change-Id: I52e0f1864a917a1e1b863725cb0d4f22faecacb3 Reviewed-on: https://pdfium-review.googlesource.com/34450 Commit-Queue: Henrique Nakashima <hnakashima@chromium.org> Reviewed-by: Ryan Harrison <rharrison@chromium.org>
2018-06-05Tidy parser lifecycle state machine in CPDF_PageObjectHolder.Tom Sepez
Only update state in CPDF_PageObjectHolder itself. Make more data private. Remove CPDF_Page::GetPageBBox() as exact duplicate of CPDF_PageObjectHolder::GetBBox(). Change-Id: I083ec33f61a1490e7a5e673c9787751af15a6cd1 Reviewed-on: https://pdfium-review.googlesource.com/33810 Reviewed-by: dsinclair <dsinclair@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
2018-06-05Revert "Create m_ContentStream field in CPDF_PageObject."Henrique Nakashima
This reverts commit d3d8287e143daf12a602a919c120b4e0c656abf8. Reason for revert: Need to revert https://pdfium-review.googlesource.com/c/pdfium/+/33595 that this depends on. Original change's description: > Create m_ContentStream field in CPDF_PageObject. > > Content streams are now split and can set nonzero values to identify > each parsed content stream. > > Bug: pdfium:1051 > Change-Id: Ia2cb1e0997db5264d468043af31f9b41e8d0d349 > Reviewed-on: https://pdfium-review.googlesource.com/33591 > Commit-Queue: Henrique Nakashima <hnakashima@chromium.org> > Reviewed-by: Ryan Harrison <rharrison@chromium.org> TBR=thestig@chromium.org,hnakashima@chromium.org,rharrison@chromium.org Change-Id: I5046b6a76508fccc0ff04cb7393cae6485dd091f No-Presubmit: true No-Tree-Checks: true No-Try: true Bug: pdfium:1051 Reviewed-on: https://pdfium-review.googlesource.com/33990 Reviewed-by: Henrique Nakashima <hnakashima@chromium.org> Commit-Queue: Henrique Nakashima <hnakashima@chromium.org>
2018-06-05Create m_ContentStream field in CPDF_PageObject.Henrique Nakashima
Content streams are now split and can set nonzero values to identify each parsed content stream. Bug: pdfium:1051 Change-Id: Ia2cb1e0997db5264d468043af31f9b41e8d0d349 Reviewed-on: https://pdfium-review.googlesource.com/33591 Commit-Queue: Henrique Nakashima <hnakashima@chromium.org> Reviewed-by: Ryan Harrison <rharrison@chromium.org>
2018-05-31Clean up some nits in CPDF_Type3GlyphNicolas Pena
Change-Id: Ia466bb0119d914794b0d7ed9385547a7be245858 Reviewed-on: https://pdfium-review.googlesource.com/33312 Reviewed-by: Lei Zhang <thestig@chromium.org> Commit-Queue: Nicolás Peña Moreno <npm@chromium.org>
2018-05-31Handle image mask continuous loading correctlyWei Li
When image mask doesn't need multi-steps to load, ContinueLoadMaskDIB() will return LoadState::kFail as result. For this case, the loading should continue as usual instead of aborting. BUG=pdfium:1087 Change-Id: I5c43a67e43469ac7febca4c0cf1faa96ee105206 Reviewed-on: https://pdfium-review.googlesource.com/33310 Reviewed-by: dsinclair <dsinclair@chromium.org> Commit-Queue: Wei Li <weili@chromium.org>
2018-05-30Exclude certain colorspace types for calculating transparency backdrop color.Lei Zhang
Per discussion for the "CS" entry in the PDF 1.7 spec table 7.13, several types of colorspaces do not meet the requirements of this particular colorspace entry. In terms of implementation, this avoids hitting a NOTREACHED() in CPDF_PatternCS::GetRGB(). BUG=chromium:847346 Change-Id: If994a91cdcd84b8977196256ee6926e20c4b74aa Reviewed-on: https://pdfium-review.googlesource.com/33210 Reviewed-by: Henrique Nakashima <hnakashima@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2018-05-29Get rid of FXARGB_MAKE macro.Lei Zhang
ArgbEncode() does the same thing. Change-Id: Ibb05ed4aae720c0a5ba66771699c0d7e11230921 Reviewed-on: https://pdfium-review.googlesource.com/32230 Reviewed-by: dsinclair <dsinclair@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2018-05-28Revert 'Remove almost all usages of CFX_FixedBufGrow with std::vector'chromium/3444Nicolas Pena
This is a manual revert of the CL at: https://pdfium-review.googlesource.com/c/pdfium/+/32159 The only file manually changed was cpdf_renderstatus.cpp Reason for revert: the bug below shows that sometimes the vector size used is larger than the parameter given to CFX_FixedBufGrow. Thus, we will revert, then add vectors using std::max unless it's clear from the code that the code will never access indices outside. Bug: chromium:847247 Change-Id: Iee54af023c8564824418a7d34a6385b0bc418ff0 Reviewed-on: https://pdfium-review.googlesource.com/33050 Reviewed-by: dsinclair <dsinclair@chromium.org> Commit-Queue: Nicolás Peña Moreno <npm@chromium.org>
2018-05-28Add const/non-const versions of remaining CPDF_Dictionary methods.Lei Zhang
GetObjectFor() and GetDirectObjectFor(). Change-Id: I588cd994dfccf0ffd4c8f91362a4806dc109251e Reviewed-on: https://pdfium-review.googlesource.com/32991 Reviewed-by: Ryan Harrison <rharrison@chromium.org> Commit-Queue: Ryan Harrison <rharrison@chromium.org>
2018-05-25Add proper const/non-const versions of CPDF_Dictionary::GetArrayFor().Lei Zhang
BUG=pdfium:234 Change-Id: I5c900aa0547afef0c60de35422b4ee489daa6cfb Reviewed-on: https://pdfium-review.googlesource.com/32913 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org>
2018-05-25Add proper const/non-const versions of CPDF_Dictionary::GetStreamFor().chromium/3441Lei Zhang
BUG=pdfium:234 Change-Id: Ia3e758bbe5c445c3856f5215e900e02a16b4d7d7 Reviewed-on: https://pdfium-review.googlesource.com/32910 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org>
2018-05-22Make friend RetainPtr<T> statements consistently public.Lei Zhang
Also make destructors private for RetainPtr sub-classes, and add missing destructors. Change-Id: I451bf0aae2dae943b1f450d0aa4ca5124dc578fd Reviewed-on: https://pdfium-review.googlesource.com/32853 Reviewed-by: Tom Sepez <tsepez@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2018-05-17Update third_party/base/compiler_specific.h.Lei Zhang
Import Chromium's base/compiler_specific.h from r537069. Now that FALLTHROUGH is available via compiler_specific.h, remove FX_FALLTHROUGH. Change-Id: I8b9631a4f007673e10e0c26951dfd61e9dcada30 Reviewed-on: https://pdfium-review.googlesource.com/32639 Reviewed-by: Nico Weber <thakis@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2018-05-14Cleanup CPDF_Form parsing codechromium/3431Dan Sinclair
This CL folds the StartParse() method of CPDF_Form into the ParserContent method. The no arguments ParseContent is removed and ParseContentWithParams renamed to ParseContent. The callsites are updated to pass the nullptr's. Bug: chromium:813349 Change-Id: I304b77aef1de1b9aa20e4a3044db5023f5701584 Reviewed-on: https://pdfium-review.googlesource.com/32511 Reviewed-by: Henrique Nakashima <hnakashima@chromium.org> Commit-Queue: dsinclair <dsinclair@chromium.org>
2018-05-11Use more smart pointer types in CPDF_DIBSource.Tom Sepez
Use one std::vector<>, too. As a result, make GetDecodeAndMaskArray() update that member directly rather than forcing callers to assign to it each time. Change-Id: I51a039b9e8cce7ff885edf395622eaf6a5c4816a Reviewed-on: https://pdfium-review.googlesource.com/32313 Commit-Queue: Tom Sepez <tsepez@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org>
2018-05-10Add CPDF_Transparency.Lei Zhang
Encapsulates transparency status instead of having it be a raw int. Change-Id: I8b10dafa97da112795cf84c46cf416a0294551d5 Reviewed-on: https://pdfium-review.googlesource.com/32194 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org>
2018-05-10Fix destruction order in CPDF_Dibsource.Tom Sepez
The order of the elements in the header is correct, but we were clearing it early in the destructor itself. Bug: 840695 Change-Id: I1585722fed8dc672ffd5e1dc9a1eea1c7c80f310 Reviewed-on: https://pdfium-review.googlesource.com/32311 Reviewed-by: dsinclair <dsinclair@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
2018-05-09Mark numerious pointers as const.Lei Zhang
They are mostly CPDF_Object* and derived classes, but others that should be are marked const as well. Change-Id: Ib3344d7d8db90940df8edc97c0dd6c59da080541 Reviewed-on: https://pdfium-review.googlesource.com/32180 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: Henrique Nakashima <hnakashima@chromium.org>
2018-05-09Add constants for PDF 1.7 spec, table 7.13.Lei Zhang
BUG=pdfium:1049 Change-Id: I3a589fe51f2e584dc130ba31faa144d4494a1b08 Reviewed-on: https://pdfium-review.googlesource.com/32179 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org>
2018-05-09Break backcolor code out of CPDF_RenderStatus::LoadSMask().Lei Zhang
Fix some nits in the code in the process. Change-Id: I660b3bf547823a11bc291ed2dd1ec19a76b24b5b Reviewed-on: https://pdfium-review.googlesource.com/32178 Reviewed-by: dsinclair <dsinclair@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2018-05-08Remove almost all usages of CFX_FixedBufGrow with std::vectorNicolas Pena
Tested by running safetynet_compare.py on this patch vs master. The results were 0 regressions and 0 improvements. The two remaining usages cannot be replaced because they would cause a regression. Bug: pdfium:177 Change-Id: I43eddf4ffaac2eb063f2004d6606bc3cd6e627ac Reviewed-on: https://pdfium-review.googlesource.com/32159 Reviewed-by: dsinclair <dsinclair@chromium.org> Reviewed-by: Tom Sepez <tsepez@chromium.org> Commit-Queue: Nicolás Peña Moreno <npm@chromium.org>
2018-05-08Move CalculatePitch8() to core/fxcodec.Lei Zhang
Use it in more places there. Change-Id: I477670a5946ec9033ad5f2bef0fbcddb52682066 Reviewed-on: https://pdfium-review.googlesource.com/31271 Commit-Queue: Ryan Harrison <rharrison@chromium.org> Reviewed-by: Ryan Harrison <rharrison@chromium.org>
2018-05-07Add some getters for CPDF_PageObjectHolder.Lei Zhang
Change-Id: I3fe99ecb17d37f893ce5d0d59219c82ee31fe7ea Reviewed-on: https://pdfium-review.googlesource.com/32110 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org>
2018-05-07Initialize CPDF_RenderStatus members in the header.Lei Zhang
Also move static private members into the .cpp file. Change-Id: Idbbdc7c78ac4199968888466caa20c58a5653dfd Reviewed-on: https://pdfium-review.googlesource.com/32151 Commit-Queue: Ryan Harrison <rharrison@chromium.org> Reviewed-by: Ryan Harrison <rharrison@chromium.org>
2018-05-07Use checked large integer in ContinueQuickStretchchromium/3424Ryan Harrison
This existing code has the potential for an integer overflow in it. When overflow occurs in this function scaling may partially succeed. This is due to how out of range values are being clamped, which implicitly swallows the overflow. This CL changes the calculation to be performed in a 64-bit space and then attempts to down cast it back to 32-bit space at the end. Because there are multiple steps it is possible for an intermediate value to cause an overflow in 32 bit space, but the final value to be valid. If the downcast is not possible then the stretch operation is failed. An existing test case has been updated, since it encoded an incorrect result. BUG=chromium:839245 Change-Id: I637cc1e2d6c6c2d5394599104f76352c20ead021 Reviewed-on: https://pdfium-review.googlesource.com/32056 Reviewed-by: Henrique Nakashima <hnakashima@chromium.org> Commit-Queue: Ryan Harrison <rharrison@chromium.org>
2018-04-25Introduce ScopedFPDF types in public/cpp/fpdf_scopers.hTom Sepez
Applies std::remove_ptr to the public API types so that we can deduce a correct unique ptr type no matter how that API might change away from void* usage. Creates shorter names for std::unique_ptr<std::remove_pointer<>, ...> Change-Id: I04a0ff43cb7d5a4d3867939a53a54c9cef00db86 Reviewed-on: https://pdfium-review.googlesource.com/31292 Reviewed-by: Lei Zhang <thestig@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
2018-04-19Change SHADING_STEPS from a #define to a constant.Lei Zhang
Change-Id: I06eab59d7944309d6fe99b97956e8ffb11d64088 Reviewed-on: https://pdfium-review.googlesource.com/30991 Commit-Queue: dsinclair <dsinclair@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org>
2018-04-18Fix integer overflow in shading drawing code.Lei Zhang
BUG=chromium:833721 Change-Id: I3ca878760c12144ef27a71dcbbfd7c18d12a5f3b Reviewed-on: https://pdfium-review.googlesource.com/30992 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: Tom Sepez <tsepez@chromium.org>
2018-04-16Remove non-const CPDF_PageObjectHolder::GetPageObjectList().Henrique Nakashima
This makes it easier to control modifications to the page object list. Bug: pdfium:1051 Change-Id: Ia85c597fa6d39e89041b990b4b6c91e327ef811d Reviewed-on: https://pdfium-review.googlesource.com/30803 Commit-Queue: Henrique Nakashima <hnakashima@chromium.org> Reviewed-by: Lei Zhang <thestig@chromium.org>
2018-04-12More CPDF_Color improvements.Lei Zhang
Make Copy() take a const-ref parameter. As is, the parameter is a pointer and it is dereferenced without any checks, and there are no crash reports as a result of that. Also mention GetPattern() should only be called when IsPattern() returns true. Change-Id: Ice3b7c941532d5a312fdd8f0c032e08d1ee1c6b5 Reviewed-on: https://pdfium-review.googlesource.com/30430 Reviewed-by: Henrique Nakashima <hnakashima@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2018-04-10Change CFX_RenderDevice::FillRect() to take FX_RECT by const-ref.Lei Zhang
It currently takes const FX_RECT*, but the pointer is never nullptr. Change-Id: I571e9e8dd04756bc4daa25a61a5af8d1f902914b Reviewed-on: https://pdfium-review.googlesource.com/30052 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: Ryan Harrison <rharrison@chromium.org>
2018-04-09Use ByteStringView / pdfium::span in CPDF font as appropriate.chromium/3393Tom Sepez
Change-Id: I92c7ba605bf95a9023ad046b8dddebe0a0592802 Reviewed-on: https://pdfium-review.googlesource.com/29992 Reviewed-by: dsinclair <dsinclair@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
2018-04-09Pass FX_RECT by const-ref in rendering code.Lei Zhang
Change-Id: I1232e6c61cbe696d90d87f461ebed0a7aea40893 Reviewed-on: https://pdfium-review.googlesource.com/29973 Commit-Queue: Ryan Harrison <rharrison@chromium.org> Reviewed-by: Ryan Harrison <rharrison@chromium.org>
2018-04-09Remove RenderDeviceDriverIface::GetCTM().Lei Zhang
It has no overrides and always returns the identity matrix. Many callers that use the returned value can be simplified, because they are scaling by 1 or concatenating an identity matrix. Change-Id: I7afb7214be210d02638644dfb9b58404420c2ef2 Reviewed-on: https://pdfium-review.googlesource.com/29972 Commit-Queue: Ryan Harrison <rharrison@chromium.org> Reviewed-by: Ryan Harrison <rharrison@chromium.org>
2018-04-09Cleanup CPDF_RenderStatus::GetObjectClippedRect().Lei Zhang
- Just return the rect directly and let the caller check for emptiness. - Get rid of a boolean parameter with always false argument. Change-Id: Ia33587db34c0a628047e59b7faa390c3ac57ec8a Reviewed-on: https://pdfium-review.googlesource.com/29971 Commit-Queue: Ryan Harrison <rharrison@chromium.org> Reviewed-by: Ryan Harrison <rharrison@chromium.org>
2018-04-05Combine if/else blocks in CPDF_DIBSource::TranslateScanline24bpp().Lei Zhang
The two branches are very similar. Change-Id: I2a9502858e9ce997f28b17bc1051b71fa058c2c4 Reviewed-on: https://pdfium-review.googlesource.com/24350 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: Henrique Nakashima <hnakashima@chromium.org>
2018-04-05Split CPDF_DIBSource::TranslateScanline24bpp().Lei Zhang
Move some code into TranslateScanline24bppDefaultDecode(). Change-Id: I7e985c2abb9b2f9e41214531321f8f3846dd3a94 Reviewed-on: https://pdfium-review.googlesource.com/29857 Reviewed-by: Henrique Nakashima <hnakashima@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
2018-04-03Re-arrange so inline vectors come last in structs.Tom Sepez
This might make the memory tools more effective in finding OOBs. Change-Id: Id093bb0a88c37954c80d612ac00b5a168e75bdbf Reviewed-on: https://pdfium-review.googlesource.com/29550 Reviewed-by: dsinclair <dsinclair@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
2018-03-21Change FXSYS_RGB() to FXSYS_BGR().Lei Zhang
Also change it from a macro to a constexpr function. Change-Id: I8b2bb42c45a23da6db136abdaee24132db4471c6 Reviewed-on: https://pdfium-review.googlesource.com/28579 Commit-Queue: dsinclair <dsinclair@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org>
2018-03-21Rename one ArgbEncode() variant to AlphaAndColorRefToArgb().Lei Zhang
Mark the other ArgbEncode() variant as constexpr. Change-Id: I84207d805766e5efc669638bd8a15cfead356a41 Reviewed-on: https://pdfium-review.googlesource.com/28577 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org>
2018-03-20Rename "RGB" methods/variables to "ColorRef" in CPDF_ColorState.Lei Zhang
Change-Id: I196e3148d680c9efeaf9609dd3ddbfe3f6635fa6 Reviewed-on: https://pdfium-review.googlesource.com/28576 Commit-Queue: Lei Zhang <thestig@chromium.org> Reviewed-by: dsinclair <dsinclair@chromium.org>
2018-03-15Rename FX_COLORREF variables from "rgb" to "bgr".Lei Zhang
FX_COLORREF should work like win32 COLORREF, which is BGR. Change-Id: I9f8bb3e2d30a64dc822ac6b8c46130358a03678a Reviewed-on: https://pdfium-review.googlesource.com/28574 Commit-Queue: Ryan Harrison <rharrison@chromium.org> Reviewed-by: Ryan Harrison <rharrison@chromium.org>
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