Basic APIs and tests for extracting and setting annotation paths
1. Added APIs for retrieving existing annotation paths and setting
annotation paths.
* Added an embedder test testing all the new functions.
Bug=pdfium:737
Change-Id: Ic451bcd3be488261baf2182549c4238b887b219e
Reviewed-on: https://pdfium-review.googlesource.com/6676
Commit-Queue: Jane Liu <janeliulwq@google.com>
Reviewed-by: Lei Zhang <thestig@chromium.org>
Reviewed-by: dsinclair <dsinclair@chromium.org>
diff --git a/public/fpdf_annot.h b/public/fpdf_annot.h
index 9e349bd..89edd01 100644
--- a/public/fpdf_annot.h
+++ b/public/fpdf_annot.h
@@ -55,10 +55,9 @@
FPDFANNOT_TEXTTYPE_Author
} FPDFANNOT_TEXTTYPE;
-// Check if an annotation subtype is currently supported for creating and
-// displaying. The supported subtypes must be consistent with the ones supported
-// by AP generation - see the list of calls to CPVT_GenerateAP::Generate*AP() in
-// CPDF_Annot::GenerateAPIfNeeded().
+// Check if an annotation subtype is currently supported for creation.
+// Currently supported subtypes: circle, highlight, ink, popup, square,
+// squiggly, stamp, strikeout, text, and underline.
//
// subtype - the subtype to be checked.
//
@@ -68,6 +67,8 @@
// Create an annotation in |page| of the subtype |subtype|. If the specified
// subtype is illegal or unsupported, then a new annotation will not be created.
+// Must call FPDFPage_CloseAnnot() when the annotation returned by this
+// function is no longer needed.
//
// page - handle to a page.
// subtype - the subtype of the new annotation.
@@ -83,7 +84,8 @@
// Returns the number of annotations in |page|.
DLLEXPORT int STDCALL FPDFPage_GetAnnotCount(FPDF_PAGE page);
-// Get annotation in |page| at |index|.
+// Get annotation in |page| at |index|. Must call FPDFPage_CloseAnnot() when the
+// annotation returned by this function is no longer needed.
//
// page - handle to a page.
// index - the index of the annotation.
@@ -114,6 +116,49 @@
DLLEXPORT FPDF_ANNOTATION_SUBTYPE STDCALL
FPDFAnnot_GetSubtype(FPDF_ANNOTATION annot);
+// Experimental API.
+// Update |path| in |annot|. |path| must be in |annot| already and must have
+// been retrieved by FPDFAnnot_GetPathObject(). Only ink and stamp annotations
+// are supported currently.
+//
+// annot - handle to an annotation.
+// path - handle to the path that |annot| needs to update.
+//
+// Return true if successful.
+DLLEXPORT FPDF_BOOL STDCALL FPDFAnnot_UpdatePathObject(FPDF_ANNOTATION annot,
+ FPDF_PAGEOBJECT path);
+
+// Experimental API.
+// Add |path| to |annot|. |path| must have been created by
+// FPDFPageObj_CreateNewPath(), and will be owned by |annot|. Note that a |path|
+// cannot belong to more than one |annot|. Only ink and stamp annotations
+// are supported currently.
+//
+// annot - handle to an annotation.
+// path - handle to the path that is to be added to |annot|.
+//
+// Return true if successful.
+DLLEXPORT FPDF_BOOL STDCALL FPDFAnnot_AppendPathObject(FPDF_ANNOTATION annot,
+ FPDF_PAGEOBJECT path);
+
+// Experimental API.
+// Get the number of path objects in |annot|.
+//
+// annot - handle to an annotation.
+//
+// Returns the number of path objects in |annot|.
+DLLEXPORT int STDCALL FPDFAnnot_GetPathObjectCount(FPDF_ANNOTATION annot);
+
+// Experimental API.
+// Get the path object in |annot| at |index|.
+//
+// annot - handle to an annotation.
+// index - the index of the path object.
+//
+// Return a handle to the path object, or NULL on failure.
+DLLEXPORT FPDF_PAGEOBJECT STDCALL FPDFAnnot_GetPathObject(FPDF_ANNOTATION annot,
+ int index);
+
// Set the color of an annotation. Fails when called on annotations with
// appearance streams already defined; instead use
// FPDFPath_Set{Stroke|Fill}Color().