Add a helper function to generate fill rendering options.

Create a helper GetFillOptionsForDrawTextPath() to generate the fill
options for CPDF_TextRenderer::DrawTextPath(). Meanwhile, rename
GetFillRenderOptionsHelper() to GetFillOptionsForDrawPathWithBlend() to
distinguish these two helper functions.

Change-Id: I4937479ff6f3cded594b472cca13cef935d08c07
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/70934
Commit-Queue: Hui Yingst <nigi@chromium.org>
Reviewed-by: Lei Zhang <thestig@chromium.org>

core/fpdfapi/render/cpdf_renderstatus.cpp

diff --git a/core/fpdfapi/render/cpdf_renderstatus.cpp b/core/fpdfapi/render/cpdf_renderstatus.cpp
index 136e93e..676fa03 100644
--- a/core/fpdfapi/render/cpdf_renderstatus.cpp
+++ b/core/fpdfapi/render/cpdf_renderstatus.cpp
@@ -73,11 +73,12 @@
 constexpr int kRenderMaxRecursionDepth = 64;
 int g_CurrentRecursionDepth = 0;
 
-int GetFillRenderOptionsHelper(const CPDF_RenderOptions::Options& options,
-                               const CPDF_PathObject* path_obj,
-                               int fill_type,
-                               bool is_stroke,
-                               bool is_type3_char) {
+int GetFillOptionsForDrawPathWithBlend(
+    const CPDF_RenderOptions::Options& options,
+    const CPDF_PathObject* path_obj,
+    int fill_type,
+    bool is_stroke,
+    bool is_type3_char) {
   int fill_options = fill_type;
   if (fill_type && options.bRectAA)
     fill_options |= FXFILL_RECT_AA;
@@ -93,6 +94,23 @@
   return fill_options;
 }
 
+int GetFillOptionsForDrawTextPath(const CPDF_RenderOptions::Options& options,
+                                  const CPDF_TextObject* text_obj,
+                                  bool is_stroke,
+                                  bool is_fill) {
+  int fill_options = 0;
+  if (is_stroke && is_fill) {
+    fill_options |= FX_FILL_STROKE;
+    fill_options |= FX_STROKE_TEXT_MODE;
+  }
+  if (text_obj->m_GeneralState.GetStrokeAdjust())
+    fill_options |= FX_STROKE_ADJUST;
+  if (options.bNoTextSmooth)
+    fill_options |= FXFILL_NOPATHSMOOTH;
+
+  return fill_options;
+}
+
 bool IsAvailableMatrix(const CFX_Matrix& matrix) {
   if (matrix.a == 0 || matrix.d == 0)
     return matrix.b != 0 && matrix.c != 0;
@@ -400,11 +418,11 @@
   if (!IsAvailableMatrix(path_matrix))
     return true;
 
-  int fill_options = GetFillRenderOptionsHelper(options, pPathObj, FillType,
-                                                bStroke, m_pType3Char);
   return m_pDevice->DrawPathWithBlend(
       pPathObj->path().GetObject(), &path_matrix,
-      pPathObj->m_GraphState.GetObject(), fill_argb, stroke_argb, fill_options,
+      pPathObj->m_GraphState.GetObject(), fill_argb, stroke_argb,
+      GetFillOptionsForDrawPathWithBlend(options, pPathObj, FillType, bStroke,
+                                         m_pType3Char),
       m_curBlend);
 }
 
@@ -859,20 +877,13 @@
         pDeviceMatrix = &device_matrix;
       }
     }
-    int flag = 0;
-    if (bStroke && bFill) {
-      flag |= FX_FILL_STROKE;
-      flag |= FX_STROKE_TEXT_MODE;
-    }
-    if (textobj->m_GeneralState.GetStrokeAdjust())
-      flag |= FX_STROKE_ADJUST;
-    if (m_Options.GetOptions().bNoTextSmooth)
-      flag |= FXFILL_NOPATHSMOOTH;
     return CPDF_TextRenderer::DrawTextPath(
         m_pDevice, textobj->GetCharCodes(), textobj->GetCharPositions(),
         pFont.Get(), font_size, text_matrix, pDeviceMatrix,
         textobj->m_GraphState.GetObject(), fill_argb, stroke_argb,
-        pClippingPath, flag);
+        pClippingPath,
+        GetFillOptionsForDrawTextPath(m_Options.GetOptions(), textobj, bStroke,
+                                      bFill));
   }
   text_matrix.Concat(mtObj2Device);
   return CPDF_TextRenderer::DrawNormalText(