Move code related to stroke line dash to CXFA_Stroke

This CL moves XFA_StrokeTypeSetLineDash into the CXFA_Stroke class and
cleans up the unused CXFA_Graphics code for setting line dash values.

Change-Id: If6db6c315571dbcea630bc32e0d05dae6c0f10be
Reviewed-on: https://pdfium-review.googlesource.com/23114
Reviewed-by: Henrique Nakashima <hnakashima@chromium.org>
Commit-Queue: dsinclair <dsinclair@chromium.org>

2 files changed, 49 insertions, 0 deletions

diff --git a/xfa/fxfa/parser/cxfa_stroke.cpp b/xfa/fxfa/parser/cxfa_stroke.cpp
index 45634b26e3..c581a96303 100644
--- a/xfa/fxfa/parser/cxfa_stroke.cpp
+++ b/xfa/fxfa/parser/cxfa_stroke.cpp
@@ -15,6 +15,51 @@
 #include "xfa/fxfa/parser/xfa_utils.h"
 #include "xfa/fxgraphics/cxfa_graphics.h"
 
+void XFA_StrokeTypeSetLineDash(CXFA_Graphics* pGraphics,
+                               XFA_AttributeEnum iStrokeType,
+                               XFA_AttributeEnum iCapType) {
+  switch (iStrokeType) {
+    case XFA_AttributeEnum::DashDot: {
+      float dashArray[] = {4, 1, 2, 1};
+      if (iCapType != XFA_AttributeEnum::Butt) {
+        dashArray[1] = 2;
+        dashArray[3] = 2;
+      }
+      pGraphics->SetLineDash(0, dashArray, 4);
+      break;
+    }
+    case XFA_AttributeEnum::DashDotDot: {
+      float dashArray[] = {4, 1, 2, 1, 2, 1};
+      if (iCapType != XFA_AttributeEnum::Butt) {
+        dashArray[1] = 2;
+        dashArray[3] = 2;
+        dashArray[5] = 2;
+      }
+      pGraphics->SetLineDash(0, dashArray, 6);
+      break;
+    }
+    case XFA_AttributeEnum::Dashed: {
+      float dashArray[] = {5, 1};
+      if (iCapType != XFA_AttributeEnum::Butt)
+        dashArray[1] = 2;
+
+      pGraphics->SetLineDash(0, dashArray, 2);
+      break;
+    }
+    case XFA_AttributeEnum::Dotted: {
+      float dashArray[] = {2, 1};
+      if (iCapType != XFA_AttributeEnum::Butt)
+        dashArray[1] = 2;
+
+      pGraphics->SetLineDash(0, dashArray, 2);
+      break;
+    }
+    default:
+      pGraphics->SetSolidLineDash();
+      break;
+  }
+}
+
 CXFA_Stroke::CXFA_Stroke(CXFA_Document* pDoc,
                          XFA_PacketType ePacket,
                          uint32_t validPackets,
diff --git a/xfa/fxfa/parser/cxfa_stroke.h b/xfa/fxfa/parser/cxfa_stroke.h
index d3eeff1ed2..ed41997073 100644
--- a/xfa/fxfa/parser/cxfa_stroke.h
+++ b/xfa/fxfa/parser/cxfa_stroke.h
@@ -22,6 +22,10 @@ class CXFA_GEPath;
 class CXFA_Graphics;
 class CXFA_Node;
 
+void XFA_StrokeTypeSetLineDash(CXFA_Graphics* pGraphics,
+                               XFA_AttributeEnum iStrokeType,
+                               XFA_AttributeEnum iCapType);
+
 class CXFA_Stroke : public CXFA_Node {
  public:
   ~CXFA_Stroke() override;