Add FPDF_RenderPageBitmapWithMatrix.

public/fpdfview.h

 // Copyright 2014 PDFium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
 // NOTE: External docs refer to this file as "fpdfview.h", so do not rename
 // despite lack of consistency with other public files.
 
 #ifndef PUBLIC_FPDFVIEW_H_
@@ skipping 592 matching lines @@
 //          None.
 DLLEXPORT void STDCALL FPDF_RenderPageBitmap(FPDF_BITMAP bitmap,
                                              FPDF_PAGE page,
                                              int start_x,
                                              int start_y,
                                              int size_x,
                                              int size_y,
                                              int rotate,
                                              int flags);
 
+// Function: FPDF_RenderPageBitmapWithMatrix
+//          Render contents of a page to a device independent bitmap.
+// Parameters:
+//          bitmap      -   Handle to the device independent bitmap (as the
+//                          output buffer). The bitmap handle can be created
+//                          by FPDFBitmap_Create.
+//          page        -   Handle to the page. Returned by FPDF_LoadPage
+//          matrix      -   The transform matrix.
+//          clipping    -   The rect to clip to.
+//          flags       -   0 for normal display, or combination of flags
+//                          defined above. With FPDF_ANNOT flag, it renders all
+//                          annotations that does not require user-interaction,

[dsinclair, 2016/11/22 14:21:27]

nit: do not

[Lei Zhang, 2016/11/22 23:56:07]

Done.

+//                          which are all annotations except widget and popup
+//                          annotations.
+// Return value:
+//          None.
+DLLEXPORT void STDCALL FPDF_RenderPageBitmapWithMatrix(FPDF_BITMAP bitmap,
+                                                       FPDF_PAGE page,
+                                                       const FS_MATRIX* matrix,
+                                                       const FS_RECTF* clipping,
+                                                       int flags);
+
 #ifdef _SKIA_SUPPORT_
 DLLEXPORT FPDF_RECORDER STDCALL FPDF_RenderPageSkp(FPDF_PAGE page,
                                                    int size_x,
                                                    int size_y);
 #endif
 
 // Function: FPDF_ClosePage
 //          Close a loaded PDF page.
 // Parameters:
 //          page        -   Handle to the loaded page.
@@ skipping 368 matching lines @@
 // Function: FPDF_BStr_Clear
 //          Helper function to clear a byte string.
 DLLEXPORT FPDF_RESULT STDCALL FPDF_BStr_Clear(FPDF_BSTR* str);
 #endif  // PDF_ENABLE_XFA
 
 #ifdef __cplusplus
 }
 #endif
 
 #endif  // PUBLIC_FPDFVIEW_H_