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authorJulian Lunger <jlunger@google.com>2017-12-27 10:18:50 -0500
committerChromium commit bot <commit-bot@chromium.org>2018-01-09 23:41:53 +0000
commitecd063eccdb25cbb573d01fc512a3d40322761be (patch)
treec190a0305bb384efe82bc08de57fede4814017d6 /fpdfsdk/fpdf_structtree.cpp
parent81a1ac47e5d93980b59b1c34e8cf1bb22a89a936 (diff)
downloadpdfium-ecd063eccdb25cbb573d01fc512a3d40322761be.tar.xz
Expose marked content IDs for images and alt text.
- Adds two new public bits of API: - StructElement_GetMCID(STRUCTELEMENT) to return the marked content ID of the struct element. - IMAGEOBJ_METADATA.mcid to contain the marked content ID of the image. - Restores ContentMark::GetMCID, which was removed with other dead code in https://pdfium-review.googlesource.com/c/pdfium/+/19170. - Adds a couple calls to tests, including a simple new PDF to test the struct tree marked content ID. Bug:pdfium:957 Change-Id: I92856e43d741df989e53a575a08258da19a39f22 Reviewed-on: https://pdfium-review.googlesource.com/20632 Reviewed-by: Lei Zhang <thestig@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org>
Diffstat (limited to 'fpdfsdk/fpdf_structtree.cpp')
-rw-r--r--fpdfsdk/fpdf_structtree.cpp8
1 files changed, 8 insertions, 0 deletions
diff --git a/fpdfsdk/fpdf_structtree.cpp b/fpdfsdk/fpdf_structtree.cpp
index 30b7c3fce7..676824ef99 100644
--- a/fpdfsdk/fpdf_structtree.cpp
+++ b/fpdfsdk/fpdf_structtree.cpp
@@ -83,6 +83,14 @@ FPDF_StructElement_GetAltText(FPDF_STRUCTELEMENT struct_element,
: 0;
}
+FPDF_EXPORT int FPDF_CALLCONV
+FPDF_StructElement_GetMarkedContentID(FPDF_STRUCTELEMENT struct_element) {
+ CPDF_StructElement* elem = ToStructTreeElement(struct_element);
+ CPDF_Object* p =
+ (elem && elem->GetDict()) ? elem->GetDict()->GetObjectFor("K") : nullptr;
+ return p && p->IsNumber() ? p->GetInteger() : -1;
+}
+
FPDF_EXPORT unsigned long FPDF_CALLCONV
FPDF_StructElement_GetType(FPDF_STRUCTELEMENT struct_element,
void* buffer,