| // Copyright 2017 The PDFium Authors |
| // 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 <memory> |
| #include <utility> |
| |
| #include "core/fpdfapi/page/cpdf_path.h" |
| #include "core/fpdfapi/page/cpdf_pathobject.h" |
| #include "core/fxcrt/fx_system.h" |
| #include "core/fxcrt/stl_util.h" |
| #include "fpdfsdk/cpdfsdk_helpers.h" |
| #include "third_party/base/span.h" |
| |
| // These checks are here because core/ and public/ cannot depend on each other. |
| static_assert(static_cast<int>(CFX_GraphStateData::LineCap::kButt) == |
| FPDF_LINECAP_BUTT, |
| "CFX_GraphStateData::LineCap::kButt value mismatch"); |
| static_assert(static_cast<int>(CFX_GraphStateData::LineCap::kRound) == |
| FPDF_LINECAP_ROUND, |
| "CFX_GraphStateData::LineCap::kRound value mismatch"); |
| static_assert(static_cast<int>(CFX_GraphStateData::LineCap::kSquare) == |
| FPDF_LINECAP_PROJECTING_SQUARE, |
| "CFX_GraphStateData::LineCap::kSquare value mismatch"); |
| |
| static_assert(static_cast<int>(CFX_GraphStateData::LineJoin::kMiter) == |
| FPDF_LINEJOIN_MITER, |
| "CFX_GraphStateData::LineJoin::kMiter value mismatch"); |
| static_assert(static_cast<int>(CFX_GraphStateData::LineJoin::kRound) == |
| FPDF_LINEJOIN_ROUND, |
| "CFX_GraphStateData::LineJoin::kRound value mismatch"); |
| static_assert(static_cast<int>(CFX_GraphStateData::LineJoin::kBevel) == |
| FPDF_LINEJOIN_BEVEL, |
| "CFX_GraphStateData::LineJoin::kBevel value mismatch"); |
| |
| static_assert(static_cast<int>(CFX_Path::Point::Type::kLine) == |
| FPDF_SEGMENT_LINETO, |
| "CFX_Path::Point::Type::kLine value mismatch"); |
| static_assert(static_cast<int>(CFX_Path::Point::Type::kBezier) == |
| FPDF_SEGMENT_BEZIERTO, |
| "CFX_Path::Point::Type::kBezier value mismatch"); |
| static_assert(static_cast<int>(CFX_Path::Point::Type::kMove) == |
| FPDF_SEGMENT_MOVETO, |
| "CFX_Path::Point::Type::kMove value mismatch"); |
| |
| namespace { |
| |
| CPDF_PathObject* CPDFPathObjectFromFPDFPageObject(FPDF_PAGEOBJECT page_object) { |
| auto* obj = CPDFPageObjectFromFPDFPageObject(page_object); |
| return obj ? obj->AsPath() : nullptr; |
| } |
| |
| } // namespace |
| |
| FPDF_EXPORT FPDF_PAGEOBJECT FPDF_CALLCONV FPDFPageObj_CreateNewPath(float x, |
| float y) { |
| auto pPathObj = std::make_unique<CPDF_PathObject>(); |
| pPathObj->path().AppendPoint(CFX_PointF(x, y), CFX_Path::Point::Type::kMove); |
| pPathObj->DefaultStates(); |
| |
| // Caller takes ownership. |
| return FPDFPageObjectFromCPDFPageObject(pPathObj.release()); |
| } |
| |
| FPDF_EXPORT FPDF_PAGEOBJECT FPDF_CALLCONV FPDFPageObj_CreateNewRect(float x, |
| float y, |
| float w, |
| float h) { |
| auto pPathObj = std::make_unique<CPDF_PathObject>(); |
| pPathObj->path().AppendRect(x, y, x + w, y + h); |
| pPathObj->DefaultStates(); |
| |
| // Caller takes ownership. |
| return FPDFPageObjectFromCPDFPageObject(pPathObj.release()); |
| } |
| |
| FPDF_EXPORT int FPDF_CALLCONV FPDFPath_CountSegments(FPDF_PAGEOBJECT path) { |
| auto* pPathObj = CPDFPathObjectFromFPDFPageObject(path); |
| if (!pPathObj) |
| return -1; |
| return fxcrt::CollectionSize<int>(pPathObj->path().GetPoints()); |
| } |
| |
| FPDF_EXPORT FPDF_PATHSEGMENT FPDF_CALLCONV |
| FPDFPath_GetPathSegment(FPDF_PAGEOBJECT path, int index) { |
| auto* pPathObj = CPDFPathObjectFromFPDFPageObject(path); |
| if (!pPathObj) |
| return nullptr; |
| |
| pdfium::span<const CFX_Path::Point> points = pPathObj->path().GetPoints(); |
| if (!fxcrt::IndexInBounds(points, index)) |
| return nullptr; |
| |
| return FPDFPathSegmentFromFXPathPoint(&points[index]); |
| } |
| |
| FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV FPDFPath_MoveTo(FPDF_PAGEOBJECT path, |
| float x, |
| float y) { |
| auto* pPathObj = CPDFPathObjectFromFPDFPageObject(path); |
| if (!pPathObj) |
| return false; |
| |
| pPathObj->path().AppendPoint(CFX_PointF(x, y), CFX_Path::Point::Type::kMove); |
| 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->path().AppendPoint(CFX_PointF(x, y), CFX_Path::Point::Type::kLine); |
| 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; |
| |
| CPDF_Path& cpath = pPathObj->path(); |
| cpath.AppendPoint(CFX_PointF(x1, y1), CFX_Path::Point::Type::kBezier); |
| cpath.AppendPoint(CFX_PointF(x2, y2), CFX_Path::Point::Type::kBezier); |
| cpath.AppendPoint(CFX_PointF(x3, y3), CFX_Path::Point::Type::kBezier); |
| pPathObj->SetDirty(true); |
| return true; |
| } |
| |
| FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV FPDFPath_Close(FPDF_PAGEOBJECT path) { |
| auto* pPathObj = CPDFPathObjectFromFPDFPageObject(path); |
| if (!pPathObj) |
| return false; |
| |
| CPDF_Path& cpath = pPathObj->path(); |
| if (cpath.GetPoints().empty()) |
| return false; |
| |
| cpath.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; |
| |
| pPathObj->set_stroke(!!stroke); |
| if (fillmode == FPDF_FILLMODE_ALTERNATE) |
| pPathObj->set_alternate_filltype(); |
| else if (fillmode == FPDF_FILLMODE_WINDING) |
| pPathObj->set_winding_filltype(); |
| else |
| pPathObj->set_no_filltype(); |
| pPathObj->SetDirty(true); |
| return true; |
| } |
| |
| FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV FPDFPath_GetDrawMode(FPDF_PAGEOBJECT path, |
| int* fillmode, |
| FPDF_BOOL* stroke) { |
| auto* pPathObj = CPDFPathObjectFromFPDFPageObject(path); |
| if (!pPathObj || !fillmode || !stroke) |
| return false; |
| |
| if (pPathObj->has_alternate_filltype()) |
| *fillmode = FPDF_FILLMODE_ALTERNATE; |
| else if (pPathObj->has_winding_filltype()) |
| *fillmode = FPDF_FILLMODE_WINDING; |
| else |
| *fillmode = FPDF_FILLMODE_NONE; |
| |
| *stroke = pPathObj->stroke(); |
| return 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; |
| } |