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// 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) {
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;
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) {
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;
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 int FPDF_CALLCONV FPDFPath_CountPoint(FPDF_PAGEOBJECT path) {
auto* pPathObj = CPDFPathObjectFromFPDFPageObject(path);
if (!pPathObj)
return -1;
return pdfium::CollectionSize<int>(pPathObj->m_Path.GetPoints());
}
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);
}
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