// 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 "core/fpdfapi/page/cpdf_path.h" #include "core/fpdfapi/page/cpdf_pathobject.h" #include "core/fxcrt/fx_system.h" #include "fpdfsdk/fsdk_define.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"); 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) { if (!path || R > 255 || G > 255 || B > 255 || A > 255) return false; float rgb[3] = {R / 255.f, G / 255.f, B / 255.f}; auto* pPathObj = CPDFPathObjectFromFPDFPageObject(path); 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) { if (!path || !R || !G || !B || !A) return false; auto* pPathObj = CPDFPathObjectFromFPDFPageObject(path); uint32_t strokeRGB = pPathObj->m_ColorState.GetStrokeRGB(); *R = FXSYS_GetRValue(strokeRGB); *G = FXSYS_GetGValue(strokeRGB); *B = FXSYS_GetBValue(strokeRGB); *A = static_cast<unsigned int>(pPathObj->m_GeneralState.GetStrokeAlpha() * 255.f); return true; } FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV FPDFPath_SetStrokeWidth(FPDF_PAGEOBJECT path, float width) { if (!path || width < 0.0f) return false; auto* pPathObj = CPDFPathObjectFromFPDFPageObject(path); 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) { if (!path || !R || !G || !B || !A) return false; auto* pPathObj = CPDFPathObjectFromFPDFPageObject(path); uint32_t fillRGB = pPathObj->m_ColorState.GetFillRGB(); *R = FXSYS_GetRValue(fillRGB); *G = FXSYS_GetGValue(fillRGB); *B = FXSYS_GetBValue(fillRGB); *A = static_cast<unsigned int>(pPathObj->m_GeneralState.GetFillAlpha() * 255.f); return true; } FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV FPDFPath_MoveTo(FPDF_PAGEOBJECT path, float x, float y) { if (!path) return false; auto* pPathObj = CPDFPathObjectFromFPDFPageObject(path); 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) { if (!path) return false; auto* pPathObj = CPDFPathObjectFromFPDFPageObject(path); 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) { if (!path) return false; auto* pPathObj = CPDFPathObjectFromFPDFPageObject(path); 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) { if (!path) return false; auto* pPathObj = CPDFPathObjectFromFPDFPageObject(path); 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) { if (!path) return false; auto* pPathObj = CPDFPathObjectFromFPDFPageObject(path); 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); }