Rename fpdfsdk/fpdf* files to be consistent

This CL makes the fpdfsdk/fpdf* files to be consistently prefixed with
fpdf_ instead of randomly dropping the _.

Change-Id: I23e3c8a0831b56bcd17c788d9fe874b2ab8b24fc
Reviewed-on: https://pdfium-review.googlesource.com/29390
Commit-Queue: dsinclair <dsinclair@chromium.org>
Reviewed-by: Henrique Nakashima <hnakashima@chromium.org>

1 files changed, 292 insertions, 0 deletions

diff --git a/fpdfsdk/fpdf_editpath.cpp b/fpdfsdk/fpdf_editpath.cpp
new file mode 100644
index 0000000000..2daec67e36
--- /dev/null
+++ b/fpdfsdk/fpdf_editpath.cpp
@@ -0,0 +1,292 @@
+// Copyright 2017 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.
+
+#include "public/fpdf_edit.h"
+
+#include <vector>
+
+#include "core/fpdfapi/page/cpdf_path.h"
+#include "core/fpdfapi/page/cpdf_pathobject.h"
+#include "core/fxcrt/fx_system.h"
+#include "fpdfsdk/cpdfsdk_helpers.h"
+#include "third_party/base/ptr_util.h"
+
+// These checks are here because core/ and public/ cannot depend on each other.
+static_assert(CFX_GraphStateData::LineCapButt == FPDF_LINECAP_BUTT,
+              "CFX_GraphStateData::LineCapButt value mismatch");
+static_assert(CFX_GraphStateData::LineCapRound == FPDF_LINECAP_ROUND,
+              "CFX_GraphStateData::LineCapRound value mismatch");
+static_assert(CFX_GraphStateData::LineCapSquare ==
+                  FPDF_LINECAP_PROJECTING_SQUARE,
+              "CFX_GraphStateData::LineCapSquare value mismatch");
+
+static_assert(CFX_GraphStateData::LineJoinMiter == FPDF_LINEJOIN_MITER,
+              "CFX_GraphStateData::LineJoinMiter value mismatch");
+static_assert(CFX_GraphStateData::LineJoinRound == FPDF_LINEJOIN_ROUND,
+              "CFX_GraphStateData::LineJoinRound value mismatch");
+static_assert(CFX_GraphStateData::LineJoinBevel == FPDF_LINEJOIN_BEVEL,
+              "CFX_GraphStateData::LineJoinBevel value mismatch");
+
+static_assert(static_cast<int>(FXPT_TYPE::LineTo) == FPDF_SEGMENT_LINETO,
+              "FXPT_TYPE::LineTo value mismatch");
+static_assert(static_cast<int>(FXPT_TYPE::BezierTo) == FPDF_SEGMENT_BEZIERTO,
+              "FXPT_TYPE::BezierTo value mismatch");
+static_assert(static_cast<int>(FXPT_TYPE::MoveTo) == FPDF_SEGMENT_MOVETO,
+              "FXPT_TYPE::MoveTo value mismatch");
+
+namespace {
+
+CPDF_PathObject* CPDFPathObjectFromFPDFPageObject(FPDF_PAGEOBJECT page_object) {
+  auto* obj = CPDFPageObjectFromFPDFPageObject(page_object);
+  return obj ? obj->AsPath() : nullptr;
+}
+
+const FX_PATHPOINT* FXPathPointFromFPDFPathSegment(FPDF_PATHSEGMENT segment) {
+  return static_cast<const FX_PATHPOINT*>(segment);
+}
+
+unsigned int GetAlphaAsUnsignedInt(float alpha) {
+  return static_cast<unsigned int>(alpha * 255.f + 0.5f);
+}
+
+}  // namespace
+
+FPDF_EXPORT FPDF_PAGEOBJECT FPDF_CALLCONV FPDFPageObj_CreateNewPath(float x,
+                                                                    float y) {
+  auto pPathObj = pdfium::MakeUnique<CPDF_PathObject>();
+  pPathObj->m_Path.AppendPoint(CFX_PointF(x, y), FXPT_TYPE::MoveTo, false);
+  pPathObj->DefaultStates();
+  return pPathObj.release();  // Caller takes ownership.
+}
+
+FPDF_EXPORT FPDF_PAGEOBJECT FPDF_CALLCONV FPDFPageObj_CreateNewRect(float x,
+                                                                    float y,
+                                                                    float w,
+                                                                    float h) {
+  auto pPathObj = pdfium::MakeUnique<CPDF_PathObject>();
+  pPathObj->m_Path.AppendRect(x, y, x + w, y + h);
+  pPathObj->DefaultStates();
+  return pPathObj.release();  // Caller takes ownership.
+}
+
+FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV
+FPDFPath_SetStrokeColor(FPDF_PAGEOBJECT path,
+                        unsigned int R,
+                        unsigned int G,
+                        unsigned int B,
+                        unsigned int A) {
+  auto* pPathObj = CPDFPathObjectFromFPDFPageObject(path);
+  if (!pPathObj || R > 255 || G > 255 || B > 255 || A > 255)
+    return false;
+
+  float rgb[3] = {R / 255.f, G / 255.f, B / 255.f};
+  pPathObj->m_GeneralState.SetStrokeAlpha(A / 255.f);
+  pPathObj->m_ColorState.SetStrokeColor(
+      CPDF_ColorSpace::GetStockCS(PDFCS_DEVICERGB), rgb, 3);
+  pPathObj->SetDirty(true);
+  return true;
+}
+
+FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV
+FPDFPath_GetStrokeColor(FPDF_PAGEOBJECT path,
+                        unsigned int* R,
+                        unsigned int* G,
+                        unsigned int* B,
+                        unsigned int* A) {
+  auto* pPathObj = CPDFPathObjectFromFPDFPageObject(path);
+  if (!pPathObj || !R || !G || !B || !A)
+    return false;
+
+  FX_COLORREF strokeColor = pPathObj->m_ColorState.GetStrokeColorRef();
+  *R = FXSYS_GetRValue(strokeColor);
+  *G = FXSYS_GetGValue(strokeColor);
+  *B = FXSYS_GetBValue(strokeColor);
+  *A = GetAlphaAsUnsignedInt(pPathObj->m_GeneralState.GetStrokeAlpha());
+  return true;
+}
+
+FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV
+FPDFPath_SetStrokeWidth(FPDF_PAGEOBJECT path, float width) {
+  auto* pPathObj = CPDFPathObjectFromFPDFPageObject(path);
+  if (!pPathObj || width < 0.0f)
+    return false;
+
+  pPathObj->m_GraphState.SetLineWidth(width);
+  pPathObj->SetDirty(true);
+  return true;
+}
+
+FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV FPDFPath_SetFillColor(FPDF_PAGEOBJECT path,
+                                                          unsigned int R,
+                                                          unsigned int G,
+                                                          unsigned int B,
+                                                          unsigned int A) {
+  return FPDFPageObj_SetFillColor(path, R, G, B, A);
+}
+
+FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV FPDFPath_GetFillColor(FPDF_PAGEOBJECT path,
+                                                          unsigned int* R,
+                                                          unsigned int* G,
+                                                          unsigned int* B,
+                                                          unsigned int* A) {
+  auto* pPathObj = CPDFPathObjectFromFPDFPageObject(path);
+  if (!pPathObj || !R || !G || !B || !A)
+    return false;
+
+  FX_COLORREF fillColor = pPathObj->m_ColorState.GetFillColorRef();
+  *R = FXSYS_GetRValue(fillColor);
+  *G = FXSYS_GetGValue(fillColor);
+  *B = FXSYS_GetBValue(fillColor);
+  *A = GetAlphaAsUnsignedInt(pPathObj->m_GeneralState.GetFillAlpha());
+  return true;
+}
+
+FPDF_EXPORT int FPDF_CALLCONV FPDFPath_CountSegments(FPDF_PAGEOBJECT path) {
+  auto* pPathObj = CPDFPathObjectFromFPDFPageObject(path);
+  if (!pPathObj)
+    return -1;
+  return pdfium::CollectionSize<int>(pPathObj->m_Path.GetPoints());
+}
+
+FPDF_EXPORT FPDF_PATHSEGMENT FPDF_CALLCONV
+FPDFPath_GetPathSegment(FPDF_PAGEOBJECT path, int index) {
+  auto* pPathObj = CPDFPathObjectFromFPDFPageObject(path);
+  if (!pPathObj)
+    return nullptr;
+
+  const std::vector<FX_PATHPOINT>& points = pPathObj->m_Path.GetPoints();
+  return pdfium::IndexInBounds(points, index) ? &points[index] : nullptr;
+}
+
+FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV FPDFPath_MoveTo(FPDF_PAGEOBJECT path,
+                                                    float x,
+                                                    float y) {
+  auto* pPathObj = CPDFPathObjectFromFPDFPageObject(path);
+  if (!pPathObj)
+    return false;
+
+  pPathObj->m_Path.AppendPoint(CFX_PointF(x, y), FXPT_TYPE::MoveTo, false);
+  pPathObj->SetDirty(true);
+  return true;
+}
+
+FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV FPDFPath_LineTo(FPDF_PAGEOBJECT path,
+                                                    float x,
+                                                    float y) {
+  auto* pPathObj = CPDFPathObjectFromFPDFPageObject(path);
+  if (!pPathObj)
+    return false;
+
+  pPathObj->m_Path.AppendPoint(CFX_PointF(x, y), FXPT_TYPE::LineTo, false);
+  pPathObj->SetDirty(true);
+  return true;
+}
+
+FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV FPDFPath_BezierTo(FPDF_PAGEOBJECT path,
+                                                      float x1,
+                                                      float y1,
+                                                      float x2,
+                                                      float y2,
+                                                      float x3,
+                                                      float y3) {
+  auto* pPathObj = CPDFPathObjectFromFPDFPageObject(path);
+  if (!pPathObj)
+    return false;
+
+  pPathObj->m_Path.AppendPoint(CFX_PointF(x1, y1), FXPT_TYPE::BezierTo, false);
+  pPathObj->m_Path.AppendPoint(CFX_PointF(x2, y2), FXPT_TYPE::BezierTo, false);
+  pPathObj->m_Path.AppendPoint(CFX_PointF(x3, y3), FXPT_TYPE::BezierTo, false);
+  pPathObj->SetDirty(true);
+  return true;
+}
+
+FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV FPDFPath_Close(FPDF_PAGEOBJECT path) {
+  auto* pPathObj = CPDFPathObjectFromFPDFPageObject(path);
+  if (!pPathObj)
+    return false;
+
+  if (pPathObj->m_Path.GetPoints().empty())
+    return false;
+
+  pPathObj->m_Path.ClosePath();
+  pPathObj->SetDirty(true);
+  return true;
+}
+
+FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV FPDFPath_SetDrawMode(FPDF_PAGEOBJECT path,
+                                                         int fillmode,
+                                                         FPDF_BOOL stroke) {
+  auto* pPathObj = CPDFPathObjectFromFPDFPageObject(path);
+  if (!pPathObj)
+    return false;
+
+  if (fillmode == FPDF_FILLMODE_ALTERNATE)
+    pPathObj->m_FillType = FXFILL_ALTERNATE;
+  else if (fillmode == FPDF_FILLMODE_WINDING)
+    pPathObj->m_FillType = FXFILL_WINDING;
+  else
+    pPathObj->m_FillType = 0;
+  pPathObj->m_bStroke = stroke != 0;
+  pPathObj->SetDirty(true);
+  return true;
+}
+
+FPDF_EXPORT void FPDF_CALLCONV FPDFPath_SetLineJoin(FPDF_PAGEOBJECT path,
+                                                    int line_join) {
+  if (!path)
+    return;
+  if (line_join <
+          static_cast<int>(CFX_GraphStateData::LineJoin::LineJoinMiter) ||
+      line_join >
+          static_cast<int>(CFX_GraphStateData::LineJoin::LineJoinBevel)) {
+    return;
+  }
+  auto* pPathObj = CPDFPageObjectFromFPDFPageObject(path);
+  CFX_GraphStateData::LineJoin lineJoin =
+      static_cast<CFX_GraphStateData::LineJoin>(line_join);
+  pPathObj->m_GraphState.SetLineJoin(lineJoin);
+  pPathObj->SetDirty(true);
+}
+
+FPDF_EXPORT void FPDF_CALLCONV FPDFPath_SetLineCap(FPDF_PAGEOBJECT path,
+                                                   int line_cap) {
+  if (!path)
+    return;
+  if (line_cap < static_cast<int>(CFX_GraphStateData::LineCap::LineCapButt) ||
+      line_cap > static_cast<int>(CFX_GraphStateData::LineCap::LineCapSquare)) {
+    return;
+  }
+  auto* pPathObj = CPDFPageObjectFromFPDFPageObject(path);
+  CFX_GraphStateData::LineCap lineCap =
+      static_cast<CFX_GraphStateData::LineCap>(line_cap);
+  pPathObj->m_GraphState.SetLineCap(lineCap);
+  pPathObj->SetDirty(true);
+}
+
+FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV
+FPDFPathSegment_GetPoint(FPDF_PATHSEGMENT segment, float* x, float* y) {
+  auto* pPathPoint = FXPathPointFromFPDFPathSegment(segment);
+  if (!pPathPoint || !x || !y)
+    return false;
+
+  *x = pPathPoint->m_Point.x;
+  *y = pPathPoint->m_Point.y;
+
+  return true;
+}
+
+FPDF_EXPORT int FPDF_CALLCONV
+FPDFPathSegment_GetType(FPDF_PATHSEGMENT segment) {
+  auto* pPathPoint = FXPathPointFromFPDFPathSegment(segment);
+
+  return pPathPoint ? static_cast<int>(pPathPoint->m_Type)
+                    : FPDF_SEGMENT_UNKNOWN;
+}
+
+FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV
+FPDFPathSegment_GetClose(FPDF_PATHSEGMENT segment) {
+  auto* pPathPoint = FXPathPointFromFPDFPathSegment(segment);
+
+  return pPathPoint ? pPathPoint->m_CloseFigure : false;
+}