Pdfium Patch to restore PS Path

core/fxge/win32/fx_win32_print.cpp

 // 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
 
 #include <windows.h>
 
 #include <algorithm>
 #include <memory>
 #include <vector>
 
 #include "core/fxcrt/fx_system.h"
-#include "core/fxge/cfx_renderdevice.h"
 #include "core/fxge/cfx_windowsdevice.h"
 #include "core/fxge/dib/dib_int.h"
 #include "core/fxge/fx_freetype.h"
 #include "core/fxge/ge/fx_text_int.h"
 #include "core/fxge/win32/win32_int.h"
+#include "third_party/base/ptr_util.h"
 
 #if defined(PDFIUM_PRINT_TEXT_WITH_GDI)
 namespace {
 
 class ScopedState {
  public:
   ScopedState(HDC hDC, HFONT hFont) : m_hDC(hDC) {
     m_iState = SaveDC(m_hDC);
     m_hFont = SelectObject(m_hDC, hFont);
   }
@@ skipping 289 matching lines @@
     return false;
 
   // Try to get the font and draw again.
   g_pdfium_typeface_accessible_func(&lf, wsText.c_str(), nChars);
   return !!ExtTextOutW(m_hDC, 0, 0, ETO_GLYPH_INDEX, nullptr, wsText.c_str(),
                        nChars, nChars > 1 ? &spacing[1] : nullptr);
 #else
   return false;
 #endif
 }
+
+CPSOutput::CPSOutput(HDC hDC) {
+  m_hDC = hDC;
+}
+
+CPSOutput::~CPSOutput() {}
+
+void CPSOutput::OutputPS(const FX_CHAR* str, int len) {
+  if (len < 0)
+    len = (int)FXSYS_strlen(str);
+
+  int sent_len = 0;
+  while (len > 0) {
+    FX_CHAR buffer[1026];
+    int send_len = std::min(len, 1024);
+    *(uint16_t*)buffer = send_len;
+    FXSYS_memcpy(buffer + 2, str + sent_len, send_len);
+
+    // TODO: Do PASSTHROUGH for non-Chromium usage.
+    // ExtEscape(m_hDC, PASSTHROUGH, send_len + 2, buffer, 0, nullptr);
+    ::GdiComment(m_hDC, send_len + 2, reinterpret_cast<const BYTE*>(buffer));
+    sent_len += send_len;
+    len -= send_len;
+  }
+}
+
+CPSPrinterDriver::CPSPrinterDriver(HDC hDC, int pslevel, bool bCmykOutput)
+    : m_hDC(hDC), m_bCmykOutput(bCmykOutput) {
+  m_HorzSize = ::GetDeviceCaps(m_hDC, HORZSIZE);
+  m_VertSize = ::GetDeviceCaps(m_hDC, VERTSIZE);
+  m_Width = ::GetDeviceCaps(m_hDC, HORZRES);
+  m_Height = ::GetDeviceCaps(m_hDC, VERTRES);
+  m_nBitsPerPixel = ::GetDeviceCaps(m_hDC, BITSPIXEL);
+  m_pPSOutput = pdfium::MakeUnique<CPSOutput>(m_hDC);
+  m_PSRenderer.Init(m_pPSOutput.get(), pslevel, m_Width, m_Height, bCmykOutput);
+  HRGN hRgn = ::CreateRectRgn(0, 0, 1, 1);
+  int ret = ::GetClipRgn(m_hDC, hRgn);
+  if (ret == 1) {
+    ret = ::GetRegionData(hRgn, 0, nullptr);
+    if (ret) {
+      RGNDATA* pData = (RGNDATA*)FX_Alloc(uint8_t, ret);
+      ret = ::GetRegionData(hRgn, ret, pData);
+      if (ret) {
+        CFX_PathData path;
+        path.AllocPointCount(pData->rdh.nCount * 5);
+        for (uint32_t i = 0; i < pData->rdh.nCount; i++) {
+          RECT* pRect = (RECT*)(pData->Buffer + pData->rdh.nRgnSize * i);
+          path.AppendRect((FX_FLOAT)pRect->left, (FX_FLOAT)pRect->bottom,
+                          (FX_FLOAT)pRect->right, (FX_FLOAT)pRect->top);
+        }
+        m_PSRenderer.SetClip_PathFill(&path, nullptr, FXFILL_WINDING);
+      }
+      FX_Free(pData);
+    }
+  }
+  ::DeleteObject(hRgn);
+}
+
+CPSPrinterDriver::~CPSPrinterDriver() {
+  EndRendering();
+}
+
+int CPSPrinterDriver::GetDeviceCaps(int caps_id) const {
+  switch (caps_id) {
+    case FXDC_DEVICE_CLASS:
+      return FXDC_PRINTER;
+    case FXDC_PIXEL_WIDTH:
+      return m_Width;
+    case FXDC_PIXEL_HEIGHT:
+      return m_Height;
+    case FXDC_BITS_PIXEL:
+      return m_nBitsPerPixel;
+    case FXDC_RENDER_CAPS:
+      return m_bCmykOutput ? FXRC_BIT_MASK | FXRC_CMYK_OUTPUT : FXRC_BIT_MASK;
+    case FXDC_HORZ_SIZE:
+      return m_HorzSize;
+    case FXDC_VERT_SIZE:
+      return m_VertSize;
+  }
+  return 0;
+}
+
+bool CPSPrinterDriver::StartRendering() {
+  return m_PSRenderer.StartRendering();
+}
+
+void CPSPrinterDriver::EndRendering() {
+  m_PSRenderer.EndRendering();
+}
+
+void CPSPrinterDriver::SaveState() {
+  m_PSRenderer.SaveState();
+}
+
+void CPSPrinterDriver::RestoreState(bool bKeepSaved) {
+  m_PSRenderer.RestoreState(bKeepSaved);
+}
+
+bool CPSPrinterDriver::SetClip_PathFill(const CFX_PathData* pPathData,
+                                        const CFX_Matrix* pObject2Device,
+                                        int fill_mode) {
+  m_PSRenderer.SetClip_PathFill(pPathData, pObject2Device, fill_mode);
+  return TRUE;
+}
+
+bool CPSPrinterDriver::SetClip_PathStroke(
+    const CFX_PathData* pPathData,
+    const CFX_Matrix* pObject2Device,
+    const CFX_GraphStateData* pGraphState) {
+  m_PSRenderer.SetClip_PathStroke(pPathData, pObject2Device, pGraphState);
+  return TRUE;
+}
+
+bool CPSPrinterDriver::DrawPath(const CFX_PathData* pPathData,
+                                const CFX_Matrix* pObject2Device,
+                                const CFX_GraphStateData* pGraphState,
+                                FX_ARGB fill_color,
+                                FX_ARGB stroke_color,
+                                int fill_mode,
+                                int blend_type) {
+  if (blend_type != FXDIB_BLEND_NORMAL)
+    return FALSE;
+  return m_PSRenderer.DrawPath(pPathData, pObject2Device, pGraphState,
+                               fill_color, stroke_color, fill_mode & 3);
+}
+
+bool CPSPrinterDriver::GetClipBox(FX_RECT* pRect) {
+  *pRect = m_PSRenderer.GetClipBox();
+  return TRUE;
+}
+
+bool CPSPrinterDriver::SetDIBits(const CFX_DIBSource* pBitmap,
+                                 uint32_t color,
+                                 const FX_RECT* pSrcRect,
+                                 int left,
+                                 int top,
+                                 int blend_type) {
+  if (blend_type != FXDIB_BLEND_NORMAL)
+    return FALSE;
+  return m_PSRenderer.SetDIBits(pBitmap, color, left, top);
+}
+
+bool CPSPrinterDriver::StretchDIBits(const CFX_DIBSource* pBitmap,
+                                     uint32_t color,
+                                     int dest_left,
+                                     int dest_top,
+                                     int dest_width,
+                                     int dest_height,
+                                     const FX_RECT* pClipRect,
+                                     uint32_t flags,
+                                     int blend_type) {
+  if (blend_type != FXDIB_BLEND_NORMAL)
+    return FALSE;
+  return m_PSRenderer.StretchDIBits(pBitmap, color, dest_left, dest_top,
+                                    dest_width, dest_height, flags);
+}
+
+bool CPSPrinterDriver::StartDIBits(const CFX_DIBSource* pBitmap,
+                                   int bitmap_alpha,
+                                   uint32_t color,
+                                   const CFX_Matrix* pMatrix,
+                                   uint32_t render_flags,
+                                   void*& handle,
+                                   int blend_type) {
+  if (blend_type != FXDIB_BLEND_NORMAL)
+    return FALSE;
+
+  if (bitmap_alpha < 255)
+    return FALSE;
+
+  handle = nullptr;
+  return m_PSRenderer.DrawDIBits(pBitmap, color, pMatrix, render_flags);
+}
+
+bool CPSPrinterDriver::DrawDeviceText(int nChars,
+                                      const FXTEXT_CHARPOS* pCharPos,
+                                      CFX_Font* pFont,
+                                      const CFX_Matrix* pObject2Device,
+                                      FX_FLOAT font_size,
+                                      uint32_t color) {
+  return m_PSRenderer.DrawText(nChars, pCharPos, pFont, pObject2Device,
+                               font_size, color);
+}