Pdfium Patch to restore PS Path

fpdfsdk/fpdfview.cpp

Index: fpdfsdk/fpdfview.cpp
diff --git a/fpdfsdk/fpdfview.cpp b/fpdfsdk/fpdfview.cpp
index c292384e88ba5f42ae4e7ca4c1827da5a46089bd..15c4b003275eb0a9c6e3358e8d537b758c135357 100644
--- a/fpdfsdk/fpdfview.cpp
+++ b/fpdfsdk/fpdfview.cpp
@@ -82,6 +82,10 @@ void RenderPageImpl(CPDF_PageRenderContext* pContext,
   if (flags & FPDF_RENDER_NO_SMOOTHPATH)
     pContext->m_pOptions->m_Flags |= RENDER_NOPATHSMOOTH;
 #endif  // PDF_ENABLE_XFA
+#ifdef _WIN32
+  if (flags & FPDF_COMPRESS_IMAGES)
+    pContext->m_pOptions->m_Flags |= RENDER_COMPRESS_IMAGES;
+#endif
 
   // Grayscale output
   if (flags & FPDF_GRAYSCALE) {
@@ -642,6 +646,7 @@ DLLEXPORT double STDCALL FPDF_GetPageHeight(FPDF_PAGE page) {
 #if defined(_WIN32)
 DLLEXPORT void STDCALL FPDF_RenderPage(HDC dc,
                                        FPDF_PAGE page,
+                                       int driver_type,
                                        int start_x,
                                        int start_y,
                                        int size_x,
@@ -656,6 +661,9 @@ DLLEXPORT void STDCALL FPDF_RenderPage(HDC dc,
   pPage->SetRenderContext(pdfium::WrapUnique(pContext));
 
   std::unique_ptr<CFX_DIBitmap> pBitmap;
+  // TODO: This results in unnecessary rasterization of some PDFs due to
+  // HasImageMask() returning true. If any image on the page is a mask, the
+  // entire page gets rasterized and the spool size gets huge.
   const bool bNewBitmap =
       pPage->BackgroundAlphaNeeded() || pPage->HasImageMask();
   if (bNewBitmap) {
@@ -666,14 +674,15 @@ DLLEXPORT void STDCALL FPDF_RenderPage(HDC dc,
     pContext->m_pDevice = pdfium::WrapUnique(pDevice);
     pDevice->Attach(pBitmap.get(), false, nullptr, false);
   } else {
-    pContext->m_pDevice = pdfium::MakeUnique<CFX_WindowsDevice>(dc);
+    pContext->m_pDevice =
+        pdfium::MakeUnique<CFX_WindowsDevice>(dc, driver_type);
   }
 
   FPDF_RenderPage_Retail(pContext, page, start_x, start_y, size_x, size_y,
                          rotate, flags, true, nullptr);
 
   if (bNewBitmap) {
-    CFX_WindowsDevice WinDC(dc);
+    CFX_WindowsDevice WinDC(dc, driver_type);
     if (WinDC.GetDeviceCaps(FXDC_DEVICE_CLASS) == FXDC_PRINTER) {
       std::unique_ptr<CFX_DIBitmap> pDst = pdfium::MakeUnique<CFX_DIBitmap>();
       int pitch = pBitmap->GetPitch();