Move ifx_renderdevicedriver to a separate file to share

Move ifx_renderdevicedriver class to its own file to share with
multiple devices to reduce code duplication.

Review-Url: https://codereview.chromium.org/2078783002

19 files changed, 232 insertions, 285 deletions

diff --git a/BUILD.gn b/BUILD.gn
index 7930c7c67b..7614dad472 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -692,12 +692,14 @@ static_library("fxge") {
     "core/fxge/ge/fx_ge_path.cpp",
     "core/fxge/ge/fx_ge_text.cpp",
     "core/fxge/ge/fx_text_int.h",
+    "core/fxge/ifx_renderdevicedriver.cpp",
     "core/fxge/include/fx_dib.h",
     "core/fxge/include/fx_font.h",
     "core/fxge/include/fx_freetype.h",
     "core/fxge/include/fx_ge.h",
     "core/fxge/include/fx_ge_apple.h",
     "core/fxge/include/fx_ge_win32.h",
+    "core/fxge/include/ifx_renderdevicedriver.h",
   ]
 
   configs += [
diff --git a/core/fpdfapi/fpdf_font/cpdf_type1font.cpp b/core/fpdfapi/fpdf_font/cpdf_type1font.cpp
index 3f1b5d1a40..6a8baa4687 100644
--- a/core/fpdfapi/fpdf_font/cpdf_type1font.cpp
+++ b/core/fpdfapi/fpdf_font/cpdf_type1font.cpp
@@ -9,6 +9,7 @@
 #include "core/fpdfapi/fpdf_font/font_int.h"
 #include "core/fpdfapi/fpdf_parser/include/cpdf_dictionary.h"
 #include "core/fxge/include/fx_freetype.h"
+#include "core/fxge/include/fx_ge.h"
 
 #if _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_
 #include "core/fxge/apple/apple_int.h"
diff --git a/core/fpdfapi/fpdf_render/fpdf_render_pattern.cpp b/core/fpdfapi/fpdf_render/fpdf_render_pattern.cpp
index 20278f71d9..dcf4407771 100644
--- a/core/fpdfapi/fpdf_render/fpdf_render_pattern.cpp
+++ b/core/fpdfapi/fpdf_render/fpdf_render_pattern.cpp
@@ -21,7 +21,7 @@
 #include "core/fpdfapi/fpdf_parser/include/cpdf_dictionary.h"
 #include "core/fpdfapi/fpdf_render/include/cpdf_rendercontext.h"
 #include "core/fpdfapi/fpdf_render/include/cpdf_renderoptions.h"
-#include "core/fxge/include/fx_ge.h"
+#include "core/fxge/include/ifx_renderdevicedriver.h"
 
 namespace {
 
diff --git a/core/fxge/agg/fx_agg_driver.cpp b/core/fxge/agg/fx_agg_driver.cpp
index f5d7cbbf4c..814cf0ec26 100644
--- a/core/fxge/agg/fx_agg_driver.cpp
+++ b/core/fxge/agg/fx_agg_driver.cpp
@@ -12,6 +12,7 @@
 #include "core/fxge/dib/dib_int.h"
 #include "core/fxge/ge/fx_text_int.h"
 #include "core/fxge/include/fx_ge.h"
+#include "core/fxge/include/ifx_renderdevicedriver.h"
 #include "third_party/agg23/agg_conv_dash.h"
 #include "third_party/agg23/agg_conv_stroke.h"
 #include "third_party/agg23/agg_curves.h"
@@ -416,97 +417,6 @@ static void RasterizeStroke(agg::rasterizer_scanline_aa& rasterizer,
   }
 }
 
-IFX_RenderDeviceDriver* IFX_RenderDeviceDriver::CreateFxgeDriver(
-    CFX_DIBitmap* pBitmap,
-    FX_BOOL bRgbByteOrder,
-    CFX_DIBitmap* pOriDevice,
-    FX_BOOL bGroupKnockout) {
-  return new CFX_AggDeviceDriver(pBitmap, bRgbByteOrder, pOriDevice,
-                                 bGroupKnockout);
-}
-
-IFX_RenderDeviceDriver::~IFX_RenderDeviceDriver() {}
-
-CFX_Matrix IFX_RenderDeviceDriver::GetCTM() const {
-  return CFX_Matrix();
-}
-
-FX_BOOL IFX_RenderDeviceDriver::StartRendering() {
-  return TRUE;
-}
-
-void IFX_RenderDeviceDriver::EndRendering() {}
-
-FX_BOOL IFX_RenderDeviceDriver::SetClip_PathStroke(
-    const CFX_PathData* pPathData,
-    const CFX_Matrix* pObject2Device,
-    const CFX_GraphStateData* pGraphState) {
-  return FALSE;
-}
-
-FX_BOOL IFX_RenderDeviceDriver::SetPixel(int x, int y, uint32_t color) {
-  return FALSE;
-}
-
-FX_BOOL IFX_RenderDeviceDriver::FillRectWithBlend(const FX_RECT* pRect,
-                                                  uint32_t fill_color,
-                                                  int blend_type) {
-  return FALSE;
-}
-
-FX_BOOL IFX_RenderDeviceDriver::DrawCosmeticLine(FX_FLOAT x1,
-                                                 FX_FLOAT y1,
-                                                 FX_FLOAT x2,
-                                                 FX_FLOAT y2,
-                                                 uint32_t color,
-                                                 int blend_type) {
-  return FALSE;
-}
-
-FX_BOOL IFX_RenderDeviceDriver::GetDIBits(CFX_DIBitmap* pBitmap,
-                                          int left,
-                                          int top) {
-  return FALSE;
-}
-CFX_DIBitmap* IFX_RenderDeviceDriver::GetBackDrop() {
-  return nullptr;
-}
-
-FX_BOOL IFX_RenderDeviceDriver::ContinueDIBits(void* handle,
-                                               IFX_Pause* pPause) {
-  return FALSE;
-}
-
-void IFX_RenderDeviceDriver::CancelDIBits(void* handle) {}
-
-FX_BOOL IFX_RenderDeviceDriver::DrawDeviceText(int nChars,
-                                               const FXTEXT_CHARPOS* pCharPos,
-                                               CFX_Font* pFont,
-                                               CFX_FontCache* pCache,
-                                               const CFX_Matrix* pObject2Device,
-                                               FX_FLOAT font_size,
-                                               uint32_t color) {
-  return FALSE;
-}
-
-void* IFX_RenderDeviceDriver::GetPlatformSurface() const {
-  return nullptr;
-}
-
-int IFX_RenderDeviceDriver::GetDriverType() const {
-  return 0;
-}
-
-void IFX_RenderDeviceDriver::ClearDriver() {}
-
-FX_BOOL IFX_RenderDeviceDriver::DrawShading(const CPDF_ShadingPattern* pPattern,
-                                            const CFX_Matrix* pMatrix,
-                                            const FX_RECT& clip_rect,
-                                            int alpha,
-                                            FX_BOOL bAlphaMode) {
-  return false;
-}
-
 CFX_AggDeviceDriver::CFX_AggDeviceDriver(CFX_DIBitmap* pBitmap,
                                          FX_BOOL bRgbByteOrder,
                                          CFX_DIBitmap* pOriDevice,
@@ -554,7 +464,7 @@ FX_BOOL CFX_AggDeviceDriver::DrawDeviceText(int nChars,
 }
 #endif  // _FXM_PLATFORM_ != _FXM_PLATFORM_APPLE_
 
-int CFX_AggDeviceDriver::GetDeviceCaps(int caps_id) {
+int CFX_AggDeviceDriver::GetDeviceCaps(int caps_id) const {
   switch (caps_id) {
     case FXDC_DEVICE_CLASS:
       return FXDC_DISPLAY;
diff --git a/core/fxge/agg/fx_agg_driver.h b/core/fxge/agg/fx_agg_driver.h
index 7c2e98047f..15f9706b3f 100644
--- a/core/fxge/agg/fx_agg_driver.h
+++ b/core/fxge/agg/fx_agg_driver.h
@@ -7,11 +7,12 @@
 #ifndef CORE_FXGE_AGG_FX_AGG_DRIVER_H_
 #define CORE_FXGE_AGG_FX_AGG_DRIVER_H_
 
-#include "core/fxge/include/fx_ge.h"
+#include "core/fxge/include/ifx_renderdevicedriver.h"
 #include "third_party/agg23/agg_clip_liang_barsky.h"
 #include "third_party/agg23/agg_path_storage.h"
 #include "third_party/agg23/agg_rasterizer_scanline_aa.h"
 
+class CFX_ClipRgn;
 class CFX_Matrix;
 class CFX_PathData;
 
@@ -37,7 +38,7 @@ class CFX_AggDeviceDriver : public IFX_RenderDeviceDriver {
   void DestroyPlatform();
 
   // IFX_RenderDeviceDriver
-  int GetDeviceCaps(int caps_id) override;
+  int GetDeviceCaps(int caps_id) const override;
   void SaveState() override;
   void RestoreState(bool bKeepSaved) override;
   FX_BOOL SetClip_PathFill(const CFX_PathData* pPathData,
diff --git a/core/fxge/apple/apple_int.h b/core/fxge/apple/apple_int.h
index c19282b12b..0462938d5a 100644
--- a/core/fxge/apple/apple_int.h
+++ b/core/fxge/apple/apple_int.h
@@ -11,7 +11,8 @@
 
 #if _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_
 
-#include "core/fxge/include/fx_ge.h"
+#include "core/fxge/include/fx_dib.h"
+#include "core/fxge/include/ifx_renderdevicedriver.h"
 
 #if _FX_OS_ == _FX_MACOSX_
 #include <Carbon/Carbon.h>
@@ -85,7 +86,7 @@ class CFX_QuartzDeviceDriver : public IFX_RenderDeviceDriver {
   ~CFX_QuartzDeviceDriver() override;
 
   // IFX_RenderDeviceDriver
-  int GetDeviceCaps(int caps_id) override;
+  int GetDeviceCaps(int caps_id) const override;
   CFX_Matrix GetCTM() const override;
   void SaveState() override;
   void RestoreState(bool bKeepSaved) override;
diff --git a/core/fxge/apple/fx_quartz_device.cpp b/core/fxge/apple/fx_quartz_device.cpp
index 8adf6326c1..b3591a3da1 100644
--- a/core/fxge/apple/fx_quartz_device.cpp
+++ b/core/fxge/apple/fx_quartz_device.cpp
@@ -190,24 +190,20 @@ CFX_QuartzDeviceDriver::~CFX_QuartzDeviceDriver() {
     CGContextRelease(m_context);
   }
 }
-int CFX_QuartzDeviceDriver::GetDeviceCaps(int capsID) {
+int CFX_QuartzDeviceDriver::GetDeviceCaps(int capsID) const {
   switch (capsID) {
-    case FXDC_DEVICE_CLASS: {
+    case FXDC_DEVICE_CLASS:
       return m_deviceClass;
-    }
-    case FXDC_PIXEL_WIDTH: {
+    case FXDC_PIXEL_WIDTH:
       return m_width;
-    }
-    case FXDC_PIXEL_HEIGHT: {
+    case FXDC_PIXEL_HEIGHT:
       return m_height;
-    }
-    case FXDC_BITS_PIXEL: {
+    case FXDC_BITS_PIXEL:
       return 32;
-    }
-    case FXDC_RENDER_CAPS: {
+    case FXDC_RENDER_CAPS:
       return m_renderCaps;
-    }
-    default: { return 0; }
+    default:
+      return 0;
   }
 }
 CFX_Matrix CFX_QuartzDeviceDriver::GetCTM() const {
diff --git a/core/fxge/ge/fx_ge_device.cpp b/core/fxge/ge/fx_ge_device.cpp
index adf68a8749..00cc541c22 100644
--- a/core/fxge/ge/fx_ge_device.cpp
+++ b/core/fxge/ge/fx_ge_device.cpp
@@ -5,6 +5,7 @@
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
 #include "core/fxge/include/fx_ge.h"
+#include "core/fxge/include/ifx_renderdevicedriver.h"
 
 CFX_RenderDevice::CFX_RenderDevice()
     : m_pBitmap(nullptr),
diff --git a/core/fxge/ge/fx_ge_text.cpp b/core/fxge/ge/fx_ge_text.cpp
index cf349eb9c0..9f635edacc 100644
--- a/core/fxge/ge/fx_ge_text.cpp
+++ b/core/fxge/ge/fx_ge_text.cpp
@@ -11,6 +11,7 @@
 #include "core/fxge/ge/fx_text_int.h"
 #include "core/fxge/include/fx_freetype.h"
 #include "core/fxge/include/fx_ge.h"
+#include "core/fxge/include/ifx_renderdevicedriver.h"
 
 #ifdef _SKIA_SUPPORT_
 #include "third_party/skia/include/core/SkStream.h"
diff --git a/core/fxge/ifx_renderdevicedriver.cpp b/core/fxge/ifx_renderdevicedriver.cpp
new file mode 100644
index 0000000000..2265a3d55b
--- /dev/null
+++ b/core/fxge/ifx_renderdevicedriver.cpp
@@ -0,0 +1,92 @@
+// Copyright 2016 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 "core/fxge/include/ifx_renderdevicedriver.h"
+
+#include "core/fxcrt/include/fx_coordinates.h"
+
+IFX_RenderDeviceDriver::~IFX_RenderDeviceDriver() {}
+
+CFX_Matrix IFX_RenderDeviceDriver::GetCTM() const {
+  return CFX_Matrix();
+}
+
+FX_BOOL IFX_RenderDeviceDriver::StartRendering() {
+  return TRUE;
+}
+
+void IFX_RenderDeviceDriver::EndRendering() {}
+
+FX_BOOL IFX_RenderDeviceDriver::SetClip_PathStroke(
+    const CFX_PathData* pPathData,
+    const CFX_Matrix* pObject2Device,
+    const CFX_GraphStateData* pGraphState) {
+  return FALSE;
+}
+
+FX_BOOL IFX_RenderDeviceDriver::SetPixel(int x, int y, uint32_t color) {
+  return FALSE;
+}
+
+FX_BOOL IFX_RenderDeviceDriver::FillRectWithBlend(const FX_RECT* pRect,
+                                                  uint32_t fill_color,
+                                                  int blend_type) {
+  return FALSE;
+}
+
+FX_BOOL IFX_RenderDeviceDriver::DrawCosmeticLine(FX_FLOAT x1,
+                                                 FX_FLOAT y1,
+                                                 FX_FLOAT x2,
+                                                 FX_FLOAT y2,
+                                                 uint32_t color,
+                                                 int blend_type) {
+  return FALSE;
+}
+
+FX_BOOL IFX_RenderDeviceDriver::GetDIBits(CFX_DIBitmap* pBitmap,
+                                          int left,
+                                          int top) {
+  return FALSE;
+}
+
+CFX_DIBitmap* IFX_RenderDeviceDriver::GetBackDrop() {
+  return nullptr;
+}
+
+FX_BOOL IFX_RenderDeviceDriver::ContinueDIBits(void* handle,
+                                               IFX_Pause* pPause) {
+  return FALSE;
+}
+
+void IFX_RenderDeviceDriver::CancelDIBits(void* handle) {}
+
+FX_BOOL IFX_RenderDeviceDriver::DrawDeviceText(int nChars,
+                                               const FXTEXT_CHARPOS* pCharPos,
+                                               CFX_Font* pFont,
+                                               CFX_FontCache* pCache,
+                                               const CFX_Matrix* pObject2Device,
+                                               FX_FLOAT font_size,
+                                               uint32_t color) {
+  return FALSE;
+}
+
+void* IFX_RenderDeviceDriver::GetPlatformSurface() const {
+  return nullptr;
+}
+
+int IFX_RenderDeviceDriver::GetDriverType() const {
+  return 0;
+}
+
+void IFX_RenderDeviceDriver::ClearDriver() {}
+
+FX_BOOL IFX_RenderDeviceDriver::DrawShading(const CPDF_ShadingPattern* pPattern,
+                                            const CFX_Matrix* pMatrix,
+                                            const FX_RECT& clip_rect,
+                                            int alpha,
+                                            FX_BOOL bAlphaMode) {
+  return false;
+}
diff --git a/core/fxge/include/fx_ge.h b/core/fxge/include/fx_ge.h
index 538afdb581..5599a75f59 100644
--- a/core/fxge/include/fx_ge.h
+++ b/core/fxge/include/fx_ge.h
@@ -423,91 +423,4 @@ class CFX_FxgeDevice : public CFX_RenderDevice {
   bool m_bOwnedBitmap;
 };
 
-class IFX_RenderDeviceDriver {
- public:
-  virtual ~IFX_RenderDeviceDriver();
-
-  static IFX_RenderDeviceDriver* CreateFxgeDriver(CFX_DIBitmap* pBitmap,
-                                                  FX_BOOL bRgbByteOrder,
-                                                  CFX_DIBitmap* pOriDevice,
-                                                  FX_BOOL bGroupKnockout);
-
-
-  virtual int GetDeviceCaps(int caps_id) = 0;
-
-  virtual CFX_Matrix GetCTM() const;
-
-  virtual FX_BOOL StartRendering();
-  virtual void EndRendering();
-  virtual void SaveState() = 0;
-  virtual void RestoreState(bool bKeepSaved) = 0;
-
-  virtual FX_BOOL SetClip_PathFill(const CFX_PathData* pPathData,
-                                   const CFX_Matrix* pObject2Device,
-                                   int fill_mode) = 0;
-  virtual FX_BOOL SetClip_PathStroke(const CFX_PathData* pPathData,
-                                     const CFX_Matrix* pObject2Device,
-                                     const CFX_GraphStateData* pGraphState);
-  virtual FX_BOOL DrawPath(const CFX_PathData* pPathData,
-                           const CFX_Matrix* pObject2Device,
-                           const CFX_GraphStateData* pGraphState,
-                           uint32_t fill_color,
-                           uint32_t stroke_color,
-                           int fill_mode,
-                           int blend_type) = 0;
-  virtual FX_BOOL SetPixel(int x, int y, uint32_t color);
-  virtual FX_BOOL FillRectWithBlend(const FX_RECT* pRect,
-                                    uint32_t fill_color,
-                                    int blend_type);
-  virtual FX_BOOL DrawCosmeticLine(FX_FLOAT x1,
-                                   FX_FLOAT y1,
-                                   FX_FLOAT x2,
-                                   FX_FLOAT y2,
-                                   uint32_t color,
-                                   int blend_type);
-
-  virtual FX_BOOL GetClipBox(FX_RECT* pRect) = 0;
-  virtual FX_BOOL GetDIBits(CFX_DIBitmap* pBitmap, int left, int top);
-  virtual CFX_DIBitmap* GetBackDrop();
-  virtual FX_BOOL SetDIBits(const CFX_DIBSource* pBitmap,
-                            uint32_t color,
-                            const FX_RECT* pSrcRect,
-                            int dest_left,
-                            int dest_top,
-                            int blend_type) = 0;
-  virtual FX_BOOL 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) = 0;
-  virtual FX_BOOL StartDIBits(const CFX_DIBSource* pBitmap,
-                              int bitmap_alpha,
-                              uint32_t color,
-                              const CFX_Matrix* pMatrix,
-                              uint32_t flags,
-                              void*& handle,
-                              int blend_type) = 0;
-  virtual FX_BOOL ContinueDIBits(void* handle, IFX_Pause* pPause);
-  virtual void CancelDIBits(void* handle);
-  virtual FX_BOOL DrawDeviceText(int nChars,
-                                 const FXTEXT_CHARPOS* pCharPos,
-                                 CFX_Font* pFont,
-                                 CFX_FontCache* pCache,
-                                 const CFX_Matrix* pObject2Device,
-                                 FX_FLOAT font_size,
-                                 uint32_t color);
-  virtual void* GetPlatformSurface() const;
-  virtual int GetDriverType() const;
-  virtual void ClearDriver();
-  virtual FX_BOOL DrawShading(const CPDF_ShadingPattern* pPattern,
-                              const CFX_Matrix* pMatrix,
-                              const FX_RECT& clip_rect,
-                              int alpha,
-                              FX_BOOL bAlphaMode);
-};
-
 #endif  // CORE_FXGE_INCLUDE_FX_GE_H_
diff --git a/core/fxge/include/fx_ge_win32.h b/core/fxge/include/fx_ge_win32.h
index 703093d92f..c0889c1852 100644
--- a/core/fxge/include/fx_ge_win32.h
+++ b/core/fxge/include/fx_ge_win32.h
@@ -13,6 +13,9 @@
 #endif
 #define WINDIB_OPEN_MEMORY 0x1
 #define WINDIB_OPEN_PATHNAME 0x2
+
+class IFX_RenderDeviceDriver;
+
 typedef struct WINDIB_Open_Args_ {
   int flags;
 
diff --git a/core/fxge/include/ifx_renderdevicedriver.h b/core/fxge/include/ifx_renderdevicedriver.h
new file mode 100644
index 0000000000..572469b8c0
--- /dev/null
+++ b/core/fxge/include/ifx_renderdevicedriver.h
@@ -0,0 +1,104 @@
+// Copyright 2016 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
+
+#ifndef CORE_FXGE_INCLUDE_IFX_RENDERDEVICEDRIVER_H_
+#define CORE_FXGE_INCLUDE_IFX_RENDERDEVICEDRIVER_H_
+
+#include "core/fxcrt/include/fx_system.h"
+
+class CFX_DIBitmap;
+class CFX_DIBSource;
+class CFX_Font;
+class CFX_FontCache;
+class CFX_GraphStateData;
+class CFX_Matrix;
+class CFX_PathData;
+class CPDF_ShadingPattern;
+class IFX_Pause;
+struct FXTEXT_CHARPOS;
+struct FX_RECT;
+
+class IFX_RenderDeviceDriver {
+ public:
+  virtual ~IFX_RenderDeviceDriver();
+
+  virtual int GetDeviceCaps(int caps_id) const = 0;
+  virtual CFX_Matrix GetCTM() const;
+
+  virtual FX_BOOL StartRendering();
+  virtual void EndRendering();
+  virtual void SaveState() = 0;
+  virtual void RestoreState(bool bKeepSaved) = 0;
+
+  virtual FX_BOOL SetClip_PathFill(const CFX_PathData* pPathData,
+                                   const CFX_Matrix* pObject2Device,
+                                   int fill_mode) = 0;
+  virtual FX_BOOL SetClip_PathStroke(const CFX_PathData* pPathData,
+                                     const CFX_Matrix* pObject2Device,
+                                     const CFX_GraphStateData* pGraphState);
+  virtual FX_BOOL DrawPath(const CFX_PathData* pPathData,
+                           const CFX_Matrix* pObject2Device,
+                           const CFX_GraphStateData* pGraphState,
+                           uint32_t fill_color,
+                           uint32_t stroke_color,
+                           int fill_mode,
+                           int blend_type) = 0;
+  virtual FX_BOOL SetPixel(int x, int y, uint32_t color);
+  virtual FX_BOOL FillRectWithBlend(const FX_RECT* pRect,
+                                    uint32_t fill_color,
+                                    int blend_type);
+  virtual FX_BOOL DrawCosmeticLine(FX_FLOAT x1,
+                                   FX_FLOAT y1,
+                                   FX_FLOAT x2,
+                                   FX_FLOAT y2,
+                                   uint32_t color,
+                                   int blend_type);
+
+  virtual FX_BOOL GetClipBox(FX_RECT* pRect) = 0;
+  virtual FX_BOOL GetDIBits(CFX_DIBitmap* pBitmap, int left, int top);
+  virtual CFX_DIBitmap* GetBackDrop();
+  virtual FX_BOOL SetDIBits(const CFX_DIBSource* pBitmap,
+                            uint32_t color,
+                            const FX_RECT* pSrcRect,
+                            int dest_left,
+                            int dest_top,
+                            int blend_type) = 0;
+  virtual FX_BOOL 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) = 0;
+  virtual FX_BOOL StartDIBits(const CFX_DIBSource* pBitmap,
+                              int bitmap_alpha,
+                              uint32_t color,
+                              const CFX_Matrix* pMatrix,
+                              uint32_t flags,
+                              void*& handle,
+                              int blend_type) = 0;
+  virtual FX_BOOL ContinueDIBits(void* handle, IFX_Pause* pPause);
+  virtual void CancelDIBits(void* handle);
+  virtual FX_BOOL DrawDeviceText(int nChars,
+                                 const FXTEXT_CHARPOS* pCharPos,
+                                 CFX_Font* pFont,
+                                 CFX_FontCache* pCache,
+                                 const CFX_Matrix* pObject2Device,
+                                 FX_FLOAT font_size,
+                                 uint32_t color);
+  virtual void* GetPlatformSurface() const;
+  virtual int GetDriverType() const;
+  virtual void ClearDriver();
+  virtual FX_BOOL DrawShading(const CPDF_ShadingPattern* pPattern,
+                              const CFX_Matrix* pMatrix,
+                              const FX_RECT& clip_rect,
+                              int alpha,
+                              FX_BOOL bAlphaMode);
+};
+
+#endif  // CORE_FXGE_INCLUDE_IFX_RENDERDEVICEDRIVER_H_
diff --git a/core/fxge/skia/fx_skia_device.cpp b/core/fxge/skia/fx_skia_device.cpp
index f253b06c6d..ad7bd2d291 100644
--- a/core/fxge/skia/fx_skia_device.cpp
+++ b/core/fxge/skia/fx_skia_device.cpp
@@ -620,7 +620,7 @@ FX_BOOL CFX_SkiaDeviceDriver::DrawDeviceText(int nChars,
   return TRUE;
 }
 
-int CFX_SkiaDeviceDriver::GetDeviceCaps(int caps_id) {
+int CFX_SkiaDeviceDriver::GetDeviceCaps(int caps_id) const {
   switch (caps_id) {
     case FXDC_DEVICE_CLASS:
       return FXDC_DISPLAY;
@@ -1182,86 +1182,4 @@ void CFX_FxgeDevice::PreMultiply() {
   (static_cast<CFX_SkiaDeviceDriver*>(GetDeviceDriver()))->PreMultiply();
 }
 
-IFX_RenderDeviceDriver::~IFX_RenderDeviceDriver() {}
-
-CFX_Matrix IFX_RenderDeviceDriver::GetCTM() const {
-  return CFX_Matrix();
-}
-
-FX_BOOL IFX_RenderDeviceDriver::StartRendering() {
-  return TRUE;
-}
-
-void IFX_RenderDeviceDriver::EndRendering() {}
-
-FX_BOOL IFX_RenderDeviceDriver::SetClip_PathStroke(
-    const CFX_PathData* pPathData,
-    const CFX_Matrix* pObject2Device,
-    const CFX_GraphStateData* pGraphState) {
-  return FALSE;
-}
-
-FX_BOOL IFX_RenderDeviceDriver::SetPixel(int x, int y, uint32_t color) {
-  return FALSE;
-}
-
-FX_BOOL IFX_RenderDeviceDriver::FillRectWithBlend(const FX_RECT* pRect,
-                                                  uint32_t fill_color,
-                                                  int blend_type) {
-  return FALSE;
-}
-
-FX_BOOL IFX_RenderDeviceDriver::DrawCosmeticLine(FX_FLOAT x1,
-                                                 FX_FLOAT y1,
-                                                 FX_FLOAT x2,
-                                                 FX_FLOAT y2,
-                                                 uint32_t color,
-                                                 int blend_type) {
-  return FALSE;
-}
-
-FX_BOOL IFX_RenderDeviceDriver::GetDIBits(CFX_DIBitmap* pBitmap,
-                                          int left,
-                                          int top) {
-  return FALSE;
-}
-CFX_DIBitmap* IFX_RenderDeviceDriver::GetBackDrop() {
-  return nullptr;
-}
-
-FX_BOOL IFX_RenderDeviceDriver::ContinueDIBits(void* handle,
-                                               IFX_Pause* pPause) {
-  return FALSE;
-}
-
-void IFX_RenderDeviceDriver::CancelDIBits(void* handle) {}
-
-FX_BOOL IFX_RenderDeviceDriver::DrawDeviceText(int nChars,
-                                               const FXTEXT_CHARPOS* pCharPos,
-                                               CFX_Font* pFont,
-                                               CFX_FontCache* pCache,
-                                               const CFX_Matrix* pObject2Device,
-                                               FX_FLOAT font_size,
-                                               uint32_t color) {
-  return FALSE;
-}
-
-void* IFX_RenderDeviceDriver::GetPlatformSurface() const {
-  return nullptr;
-}
-
-int IFX_RenderDeviceDriver::GetDriverType() const {
-  return 0;
-}
-
-void IFX_RenderDeviceDriver::ClearDriver() {}
-
-FX_BOOL IFX_RenderDeviceDriver::DrawShading(const CPDF_ShadingPattern* pPattern,
-                                            const CFX_Matrix* pMatrix,
-                                            const FX_RECT& clip_rect,
-                                            int alpha,
-                                            FX_BOOL bAlphaMode) {
-  return false;
-}
-
 #endif
diff --git a/core/fxge/skia/fx_skia_device.h b/core/fxge/skia/fx_skia_device.h
index 5ad66f79b3..4ea1ad1218 100644
--- a/core/fxge/skia/fx_skia_device.h
+++ b/core/fxge/skia/fx_skia_device.h
@@ -7,6 +7,8 @@
 
 #if defined(_SKIA_SUPPORT_)
 
+#include "core/fxge/include/ifx_renderdevicedriver.h"
+
 class SkCanvas;
 class SkMatrix;
 class SkPaint;
@@ -25,7 +27,7 @@ class CFX_SkiaDeviceDriver : public IFX_RenderDeviceDriver {
   ~CFX_SkiaDeviceDriver() override;
 
   /** Options */
-  int GetDeviceCaps(int caps_id) override;
+  int GetDeviceCaps(int caps_id) const override;
 
   /** Save and restore all graphic states */
   void SaveState() override;
diff --git a/core/fxge/win32/fx_win32_device.cpp b/core/fxge/win32/fx_win32_device.cpp
index 2df5c1c4ce..9087478837 100644
--- a/core/fxge/win32/fx_win32_device.cpp
+++ b/core/fxge/win32/fx_win32_device.cpp
@@ -755,7 +755,7 @@ CGdiDeviceDriver::CGdiDeviceDriver(HDC hDC, int device_class) {
 
 CGdiDeviceDriver::~CGdiDeviceDriver() {}
 
-int CGdiDeviceDriver::GetDeviceCaps(int caps_id) {
+int CGdiDeviceDriver::GetDeviceCaps(int caps_id) const {
   switch (caps_id) {
     case FXDC_DEVICE_CLASS:
       return m_DeviceClass;
diff --git a/core/fxge/win32/fx_win32_print.cpp b/core/fxge/win32/fx_win32_print.cpp
index 0e89e71889..02569edc38 100644
--- a/core/fxge/win32/fx_win32_print.cpp
+++ b/core/fxge/win32/fx_win32_print.cpp
@@ -23,7 +23,7 @@ CGdiPrinterDriver::CGdiPrinterDriver(HDC hDC)
 
 CGdiPrinterDriver::~CGdiPrinterDriver() {}
 
-int CGdiPrinterDriver::GetDeviceCaps(int caps_id) {
+int CGdiPrinterDriver::GetDeviceCaps(int caps_id) const {
   if (caps_id == FXDC_HORZ_SIZE)
     return m_HorzSize;
   if (caps_id == FXDC_VERT_SIZE)
diff --git a/core/fxge/win32/win32_int.h b/core/fxge/win32/win32_int.h
index b09c4ebbd5..9744324008 100644
--- a/core/fxge/win32/win32_int.h
+++ b/core/fxge/win32/win32_int.h
@@ -7,7 +7,7 @@
 #ifndef CORE_FXGE_WIN32_WIN32_INT_H_
 #define CORE_FXGE_WIN32_WIN32_INT_H_
 
-#include "core/fxge/include/fx_ge.h"
+#include "core/fxge/include/ifx_renderdevicedriver.h"
 #include "core/fxge/win32/dwrite_int.h"
 
 struct WINDIB_Open_Args_;
@@ -111,7 +111,7 @@ class CGdiDeviceDriver : public IFX_RenderDeviceDriver {
   ~CGdiDeviceDriver() override;
 
   // IFX_RenderDeviceDriver
-  int GetDeviceCaps(int caps_id) override;
+  int GetDeviceCaps(int caps_id) const override;
   void SaveState() override;
   void RestoreState(bool bKeepSaved) override;
   FX_BOOL SetClip_PathFill(const CFX_PathData* pPathData,
@@ -220,7 +220,7 @@ class CGdiPrinterDriver : public CGdiDeviceDriver {
   ~CGdiPrinterDriver() override;
 
  protected:
-  int GetDeviceCaps(int caps_id) override;
+  int GetDeviceCaps(int caps_id) const override;
   FX_BOOL SetDIBits(const CFX_DIBSource* pBitmap,
                     uint32_t color,
                     const FX_RECT* pSrcRect,
diff --git a/pdfium.gyp b/pdfium.gyp
index d6da141323..a84c83df13 100644
--- a/pdfium.gyp
+++ b/pdfium.gyp
@@ -711,12 +711,14 @@
         'core/fxge/ge/fx_ge_path.cpp',
         'core/fxge/ge/fx_ge_text.cpp',
         'core/fxge/ge/fx_text_int.h',
+        'core/fxge/ifx_renderdevicedriver.cpp',
         'core/fxge/include/fx_dib.h',
         'core/fxge/include/fx_font.h',
         'core/fxge/include/fx_freetype.h',
         'core/fxge/include/fx_ge.h',
         'core/fxge/include/fx_ge_apple.h',
         'core/fxge/include/fx_ge_win32.h',
+        'core/fxge/include/ifx_renderdevicedriver.h',
       ],
       'variables': {
         'clang_warning_flags': [