Clean up CPDF_Page.

core/fpdfapi/fpdf_render/fpdf_render_pattern.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 "core/fpdfapi/fpdf_render/render_int.h"
 
 #include "core/fpdfapi/fpdf_page/cpdf_graphicstates.h"
 #include "core/fpdfapi/fpdf_page/cpdf_meshstream.h"
-#include "core/fpdfapi/fpdf_page/cpdf_parseoptions.h"
 #include "core/fpdfapi/fpdf_page/cpdf_shadingpattern.h"
 #include "core/fpdfapi/fpdf_page/cpdf_tilingpattern.h"
 #include "core/fpdfapi/fpdf_page/include/cpdf_form.h"
 #include "core/fpdfapi/fpdf_page/include/cpdf_pageobject.h"
 #include "core/fpdfapi/fpdf_page/include/cpdf_pathobject.h"
 #include "core/fpdfapi/fpdf_page/include/cpdf_shadingobject.h"
 #include "core/fpdfapi/fpdf_page/pageint.h"
 #include "core/fpdfapi/fpdf_parser/include/cpdf_array.h"
 #include "core/fpdfapi/fpdf_parser/include/cpdf_dictionary.h"
 #include "core/fpdfapi/fpdf_render/include/cpdf_rendercontext.h"
@@ skipping 918 matching lines @@
   } else if (pPageObj->IsImage()) {
     m_pDevice->SetClip_Rect(pPageObj->GetBBox(pObj2Device));
   } else {
     return;
   }
   FX_RECT rect;
   if (GetObjectClippedRect(pPageObj, pObj2Device, FALSE, rect)) {
     m_pDevice->RestoreState();
     return;
   }
-  CFX_Matrix matrix = pattern->m_Pattern2Form;
+  CFX_Matrix matrix = *pattern->pattern_to_form();
   matrix.Concat(*pObj2Device);
   GetScaledMatrix(matrix);
   int alpha = pPageObj->m_GeneralState.GetAlpha(bStroke);
   DrawShading(pattern, &matrix, rect, alpha,
               m_Options.m_ColorMode == RENDER_COLOR_ALPHA);
   m_pDevice->RestoreState();
 }
 FX_BOOL CPDF_RenderStatus::ProcessShading(const CPDF_ShadingObject* pShadingObj,
                                           const CFX_Matrix* pObj2Device) {
   FX_RECT rect = pShadingObj->GetBBox(pObj2Device);
@@ skipping 11 matching lines @@
 }
 static CFX_DIBitmap* DrawPatternBitmap(CPDF_Document* pDoc,
                                        CPDF_PageRenderCache* pCache,
                                        CPDF_TilingPattern* pPattern,
                                        const CFX_Matrix* pObject2Device,
                                        int width,
                                        int height,
                                        int flags) {
   CFX_DIBitmap* pBitmap = new CFX_DIBitmap;
   if (!pBitmap->Create(width, height,
-                       pPattern->m_bColored ? FXDIB_Argb : FXDIB_8bppMask)) {
+                       pPattern->colored() ? FXDIB_Argb : FXDIB_8bppMask)) {
     delete pBitmap;
     return NULL;
   }
   CFX_FxgeDevice bitmap_device;
   bitmap_device.Attach(pBitmap);
   pBitmap->Clear(0);
-  CFX_FloatRect cell_bbox = pPattern->m_BBox;
-  pPattern->m_Pattern2Form.TransformRect(cell_bbox);
+  CFX_FloatRect cell_bbox = pPattern->bbox();
+  pPattern->pattern_to_form()->TransformRect(cell_bbox);
   pObject2Device->TransformRect(cell_bbox);
   CFX_FloatRect bitmap_rect(0.0f, 0.0f, (FX_FLOAT)width, (FX_FLOAT)height);
   CFX_Matrix mtAdjust;
   mtAdjust.MatchRect(bitmap_rect, cell_bbox);
   CFX_Matrix mtPattern2Bitmap = *pObject2Device;
   mtPattern2Bitmap.Concat(mtAdjust);
   CPDF_RenderOptions options;
-  if (!pPattern->m_bColored) {
+  if (!pPattern->colored())
     options.m_ColorMode = RENDER_COLOR_ALPHA;
-  }
+
   flags |= RENDER_FORCE_HALFTONE;
   options.m_Flags = flags;
   CPDF_RenderContext context(pDoc, pCache);
-  context.AppendLayer(pPattern->m_pForm, &mtPattern2Bitmap);
+  context.AppendLayer(pPattern->form(), &mtPattern2Bitmap);
   context.Render(&bitmap_device, &options, nullptr);
   return pBitmap;
 }
 void CPDF_RenderStatus::DrawTilingPattern(CPDF_TilingPattern* pPattern,
                                           const CPDF_PageObject* pPageObj,
                                           const CFX_Matrix* pObj2Device,
                                           FX_BOOL bStroke) {
   if (!pPattern->Load()) {
     return;
   }
@@ skipping 11 matching lines @@
   FX_RECT clip_box = m_pDevice->GetClipBox();
   if (clip_box.IsEmpty()) {
     m_pDevice->RestoreState();
     return;
   }
   CFX_Matrix dCTM = m_pDevice->GetCTM();
   FX_FLOAT sa = FXSYS_fabs(dCTM.a);
   FX_FLOAT sd = FXSYS_fabs(dCTM.d);
   clip_box.right = clip_box.left + (int32_t)FXSYS_ceil(clip_box.Width() * sa);
   clip_box.bottom = clip_box.top + (int32_t)FXSYS_ceil(clip_box.Height() * sd);
-  CFX_Matrix mtPattern2Device = pPattern->m_Pattern2Form;
+  CFX_Matrix mtPattern2Device = *pPattern->pattern_to_form();
   mtPattern2Device.Concat(*pObj2Device);
   GetScaledMatrix(mtPattern2Device);
   FX_BOOL bAligned = FALSE;
-  if (pPattern->m_BBox.left == 0 && pPattern->m_BBox.bottom == 0 &&
-      pPattern->m_BBox.right == pPattern->m_XStep &&
-      pPattern->m_BBox.top == pPattern->m_YStep &&
+  if (pPattern->bbox().left == 0 && pPattern->bbox().bottom == 0 &&
+      pPattern->bbox().right == pPattern->x_step() &&
+      pPattern->bbox().top == pPattern->y_step() &&
       (mtPattern2Device.IsScaled() || mtPattern2Device.Is90Rotated())) {
     bAligned = TRUE;
   }
-  CFX_FloatRect cell_bbox = pPattern->m_BBox;
+  CFX_FloatRect cell_bbox = pPattern->bbox();
   mtPattern2Device.TransformRect(cell_bbox);
   int width = (int)FXSYS_ceil(cell_bbox.Width());
   int height = (int)FXSYS_ceil(cell_bbox.Height());
   if (width == 0) {
     width = 1;
   }
   if (height == 0) {
     height = 1;
   }
   int min_col, max_col, min_row, max_row;
   CFX_Matrix mtDevice2Pattern;
   mtDevice2Pattern.SetReverse(mtPattern2Device);
   CFX_FloatRect clip_box_p(clip_box);
   clip_box_p.Transform(&mtDevice2Pattern);
 
-  min_col = (int)FXSYS_ceil((clip_box_p.left - pPattern->m_BBox.right) /
-                            pPattern->m_XStep);
-  max_col = (int)FXSYS_floor((clip_box_p.right - pPattern->m_BBox.left) /
-                             pPattern->m_XStep);
-  min_row = (int)FXSYS_ceil((clip_box_p.bottom - pPattern->m_BBox.top) /
-                            pPattern->m_YStep);
-  max_row = (int)FXSYS_floor((clip_box_p.top - pPattern->m_BBox.bottom) /
-                             pPattern->m_YStep);
+  min_col = (int)FXSYS_ceil((clip_box_p.left - pPattern->bbox().right) /
+                            pPattern->x_step());
+  max_col = (int)FXSYS_floor((clip_box_p.right - pPattern->bbox().left) /
+                             pPattern->x_step());
+  min_row = (int)FXSYS_ceil((clip_box_p.bottom - pPattern->bbox().top) /
+                            pPattern->y_step());
+  max_row = (int)FXSYS_floor((clip_box_p.top - pPattern->bbox().bottom) /
+                             pPattern->y_step());
 
   if (width > clip_box.Width() || height > clip_box.Height() ||
       width * height > clip_box.Width() * clip_box.Height()) {
     CPDF_GraphicStates* pStates = NULL;
-    if (!pPattern->m_bColored) {
+    if (!pPattern->colored())
       pStates = CloneObjStates(pPageObj, bStroke);
-    }
-    CPDF_Dictionary* pFormResource = NULL;
-    if (pPattern->m_pForm->m_pFormDict) {
-      pFormResource = pPattern->m_pForm->m_pFormDict->GetDictBy("Resources");
-    }
+
+    CPDF_Dictionary* pFormResource = nullptr;
+    if (pPattern->form()->m_pFormDict)
+      pFormResource = pPattern->form()->m_pFormDict->GetDictBy("Resources");
+
     for (int col = min_col; col <= max_col; col++)
       for (int row = min_row; row <= max_row; row++) {
         FX_FLOAT orig_x, orig_y;
-        orig_x = col * pPattern->m_XStep;
-        orig_y = row * pPattern->m_YStep;
+        orig_x = col * pPattern->x_step();
+        orig_y = row * pPattern->y_step();
         mtPattern2Device.Transform(orig_x, orig_y);
         CFX_Matrix matrix = *pObj2Device;
         matrix.Translate(orig_x - mtPattern2Device.e,
                          orig_y - mtPattern2Device.f);
         m_pDevice->SaveState();
         CPDF_RenderStatus status;
-        status.Initialize(m_pContext, m_pDevice, NULL, NULL, this, pStates,
-                          &m_Options, pPattern->m_pForm->m_Transparency,
+        status.Initialize(m_pContext, m_pDevice, nullptr, nullptr, this,
+                          pStates, &m_Options, pPattern->form()->m_Transparency,
                           m_bDropObjects, pFormResource);
-        status.RenderObjectList(pPattern->m_pForm, &matrix);
+        status.RenderObjectList(pPattern->form(), &matrix);
         m_pDevice->RestoreState();
       }
     m_pDevice->RestoreState();
     delete pStates;
     return;
   }
   if (bAligned) {
     int orig_x = FXSYS_round(mtPattern2Device.e);
     int orig_y = FXSYS_round(mtPattern2Device.f);
     min_col = (clip_box.left - orig_x) / width;
@@ skipping 44 matching lines @@
   }
   screen.Clear(0);
   uint32_t* src_buf = (uint32_t*)pPatternBitmap->GetBuffer();
   for (int col = min_col; col <= max_col; col++) {
     for (int row = min_row; row <= max_row; row++) {
       int start_x, start_y;
       if (bAligned) {
         start_x = FXSYS_round(mtPattern2Device.e) + col * width - clip_box.left;
         start_y = FXSYS_round(mtPattern2Device.f) + row * height - clip_box.top;
       } else {
-        FX_FLOAT orig_x = col * pPattern->m_XStep;
-        FX_FLOAT orig_y = row * pPattern->m_YStep;
+        FX_FLOAT orig_x = col * pPattern->x_step();
+        FX_FLOAT orig_y = row * pPattern->y_step();
         mtPattern2Device.Transform(orig_x, orig_y);
         start_x = FXSYS_round(orig_x + left_offset) - clip_box.left;
         start_y = FXSYS_round(orig_y + top_offset) - clip_box.top;
       }
       if (width == 1 && height == 1) {
         if (start_x < 0 || start_x >= clip_box.Width() || start_y < 0 ||
             start_y >= clip_box.Height()) {
           continue;
         }
         uint32_t* dest_buf =
             (uint32_t*)(screen.GetBuffer() + screen.GetPitch() * start_y +
                         start_x * 4);
-        if (pPattern->m_bColored) {
+        if (pPattern->colored())
           *dest_buf = *src_buf;
-        } else {
+        else
           *dest_buf = (*(uint8_t*)src_buf << 24) | (fill_argb & 0xffffff);
-        }
       } else {
-        if (pPattern->m_bColored) {
+        if (pPattern->colored()) {
           screen.CompositeBitmap(start_x, start_y, width, height,
                                  pPatternBitmap, 0, 0);
         } else {
           screen.CompositeMask(start_x, start_y, width, height, pPatternBitmap,
                                fill_argb, 0, 0);
         }
       }
     }
   }
   CompositeDIBitmap(&screen, clip_box.left, clip_box.top, 0, 255,
                     FXDIB_BLEND_NORMAL, FALSE);
   m_pDevice->RestoreState();
   delete pPatternBitmap;
 }
+
 void CPDF_RenderStatus::DrawPathWithPattern(const CPDF_PathObject* pPathObj,
                                             const CFX_Matrix* pObj2Device,
                                             CPDF_Color* pColor,
                                             FX_BOOL bStroke) {
   CPDF_Pattern* pattern = pColor->GetPattern();
-  if (!pattern) {
+  if (!pattern)
     return;
-  }
-  if (pattern->m_PatternType == CPDF_Pattern::TILING) {
-    DrawTilingPattern(static_cast<CPDF_TilingPattern*>(pattern), pPathObj,
-                      pObj2Device, bStroke);
-  } else {
-    DrawShadingPattern(static_cast<CPDF_ShadingPattern*>(pattern), pPathObj,
-                       pObj2Device, bStroke);
-  }
+
+  if (CPDF_TilingPattern* pTilingPattern = pattern->AsTilingPattern())
+    DrawTilingPattern(pTilingPattern, pPathObj, pObj2Device, bStroke);
+  else if (CPDF_ShadingPattern* pShadingPattern = pattern->AsShadingPattern())
+    DrawShadingPattern(pShadingPattern, pPathObj, pObj2Device, bStroke);
 }
+
 void CPDF_RenderStatus::ProcessPathPattern(const CPDF_PathObject* pPathObj,
                                            const CFX_Matrix* pObj2Device,
                                            int& filltype,
                                            FX_BOOL& bStroke) {
   if (filltype) {
     CPDF_Color& FillColor = *pPathObj->m_ColorState.GetFillColor();
     if (FillColor.m_pCS && FillColor.m_pCS->GetFamily() == PDFCS_PATTERN) {
       DrawPathWithPattern(pPathObj, pObj2Device, &FillColor, FALSE);
       filltype = 0;
     }
   }
   if (bStroke) {
     CPDF_Color& StrokeColor = *pPathObj->m_ColorState.GetStrokeColor();
     if (StrokeColor.m_pCS && StrokeColor.m_pCS->GetFamily() == PDFCS_PATTERN) {
       DrawPathWithPattern(pPathObj, pObj2Device, &StrokeColor, TRUE);
       bStroke = FALSE;
     }
   }
 }