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From b66077d3ef7ba594f2a831840783549f4dd70d86 Mon Sep 17 00:00:00 2001
Date: Wed, 11 Jul 2018 13:25:02 +0000
Subject: [PATCH] Add FPDFFormObj_CountObjects() API
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
To find out the number of sub-objects a form object has, similar to how
FPDFPage_CountObjects() does it for page objects.
Change-Id: I7e5775dece42b74fd5b71b1d9622a1aa37bf64ac
Reviewed-on: https://pdfium-review.googlesource.com/37316
Commit-Queue: Nicolás Peña Moreno <npm@chromium.org>
Reviewed-by: Nicolás Peña Moreno <npm@chromium.org>
---
fpdfsdk/fpdf_edit_embeddertest.cpp | 14 ++++++
fpdfsdk/fpdf_editpage.cpp | 21 +++++++++
fpdfsdk/fpdf_view_c_api_test.c | 1 +
public/fpdf_edit.h | 9 ++++
testing/resources/form_object.in | 80 +++++++++++++++++++++++++++++++++
testing/resources/form_object.pdf | 91 ++++++++++++++++++++++++++++++++++++++
6 files changed, 216 insertions(+)
create mode 100644 testing/resources/form_object.in
create mode 100644 testing/resources/form_object.pdf
diff --git a/fpdfsdk/fpdf_editpage.cpp b/fpdfsdk/fpdf_editpage.cpp
index 8a1200885..4151de5df 100644
--- a/fpdfsdk/fpdf_editpage.cpp
+++ b/fpdfsdk/fpdf_editpage.cpp
@@ -751,3 +751,24 @@ FPDFPageObj_SetLineCap(FPDF_PAGEOBJECT page_object, int line_cap) {
pPageObj->SetDirty(true);
return true;
}
+
+FPDF_EXPORT int FPDF_CALLCONV
+FPDFFormObj_CountObjects(FPDF_PAGEOBJECT page_object) {
+ auto* pPageObj = CPDFPageObjectFromFPDFPageObject(page_object);
+ if (!pPageObj)
+ return -1;
+
+ CPDF_FormObject* pFormObject = pPageObj->AsForm();
+ if (!pFormObject)
+ return -1;
+
+ const CPDF_Form* pForm = pFormObject->form();
+ if (!pForm)
+ return -1;
+
+ const CPDF_PageObjectList* pObjectList = pForm->GetPageObjectList();
+ if (!pObjectList)
+ return -1;
+
+ return pObjectList->size();
+}
diff --git a/public/fpdf_edit.h b/public/fpdf_edit.h
index b85537d0b..e6f193a37 100644
--- a/public/fpdf_edit.h
+++ b/public/fpdf_edit.h
@@ -1226,6 +1226,15 @@ FPDFPageObj_CreateTextObj(FPDF_DOCUMENT document,
// Returns one of the FPDF_TEXTRENDERMODE_* flags on success, -1 on error.
FPDF_EXPORT int FPDF_CALLCONV FPDFText_GetTextRenderMode(FPDF_PAGEOBJECT text);
+// Experimental API.
+// Get number of page objects inside |form_object|.
+//
+// form_object - handle to a form object.
+//
+// Returns the number of objects in |form_object| on success, -1 on error.
+FPDF_EXPORT int FPDF_CALLCONV
+FPDFFormObj_CountObjects(FPDF_PAGEOBJECT form_object);
+
#ifdef __cplusplus
} // extern "C"
#endif // __cplusplus
--
2.16.4
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