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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 "core/fpdfapi/edit/cpdf_pagecontentgenerator.h"
#include "core/fpdfapi/cpdf_modulemgr.h"
#include "core/fpdfapi/font/cpdf_font.h"
#include "core/fpdfapi/page/cpdf_page.h"
#include "core/fpdfapi/page/cpdf_pathobject.h"
#include "core/fpdfapi/page/cpdf_textobject.h"
#include "core/fpdfapi/parser/cpdf_document.h"
#include "core/fpdfapi/parser/cpdf_name.h"
#include "core/fpdfapi/parser/cpdf_parser.h"
#include "core/fpdfapi/parser/cpdf_reference.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "testing/test_support.h"
#include "third_party/base/ptr_util.h"
class CPDF_PageContentGeneratorTest : public testing::Test {
protected:
void SetUp() override {
CPDF_ModuleMgr::Get()->InitPageModule();
}
void TearDown() override {
CPDF_ModuleMgr::Destroy();
}
void TestProcessPath(CPDF_PageContentGenerator* pGen,
CFX_ByteTextBuf* buf,
CPDF_PathObject* pPathObj) {
pGen->ProcessPath(buf, pPathObj);
}
CPDF_Dictionary* TestGetResource(CPDF_PageContentGenerator* pGen,
const CFX_ByteString& type,
const CFX_ByteString& name) {
return pGen->m_pPage->m_pResources->GetDictFor(type)->GetDictFor(name);
}
void TestProcessText(CPDF_PageContentGenerator* pGen,
CFX_ByteTextBuf* buf,
CPDF_TextObject* pTextObj) {
pGen->ProcessText(buf, pTextObj);
}
};
TEST_F(CPDF_PageContentGeneratorTest, ProcessRect) {
auto pPathObj = pdfium::MakeUnique<CPDF_PathObject>();
pPathObj->m_Path.AppendRect(10, 5, 13, 30);
pPathObj->m_FillType = FXFILL_ALTERNATE;
pPathObj->m_bStroke = true;
auto pTestPage = pdfium::MakeUnique<CPDF_Page>(nullptr, nullptr, false);
CPDF_PageContentGenerator generator(pTestPage.get());
CFX_ByteTextBuf buf;
TestProcessPath(&generator, &buf, pPathObj.get());
EXPECT_EQ("q 10 5 3 25 re B* Q\n", buf.MakeString());
pPathObj = pdfium::MakeUnique<CPDF_PathObject>();
pPathObj->m_Path.AppendPoint(CFX_PointF(0, 0), FXPT_TYPE::MoveTo, false);
pPathObj->m_Path.AppendPoint(CFX_PointF(5.2f, 0), FXPT_TYPE::LineTo, false);
pPathObj->m_Path.AppendPoint(CFX_PointF(5.2f, 3.78f), FXPT_TYPE::LineTo,
false);
pPathObj->m_Path.AppendPoint(CFX_PointF(0, 3.78f), FXPT_TYPE::LineTo, true);
pPathObj->m_FillType = 0;
pPathObj->m_bStroke = false;
buf.Clear();
TestProcessPath(&generator, &buf, pPathObj.get());
EXPECT_EQ("q 0 0 5.2 3.78 re n Q\n", buf.MakeString());
}
TEST_F(CPDF_PageContentGeneratorTest, ProcessPath) {
auto pPathObj = pdfium::MakeUnique<CPDF_PathObject>();
pPathObj->m_Path.AppendPoint(CFX_PointF(3.102f, 4.67f), FXPT_TYPE::MoveTo,
false);
pPathObj->m_Path.AppendPoint(CFX_PointF(5.45f, 0.29f), FXPT_TYPE::LineTo,
false);
pPathObj->m_Path.AppendPoint(CFX_PointF(4.24f, 3.15f), FXPT_TYPE::BezierTo,
false);
pPathObj->m_Path.AppendPoint(CFX_PointF(4.65f, 2.98f), FXPT_TYPE::BezierTo,
false);
pPathObj->m_Path.AppendPoint(CFX_PointF(3.456f, 0.24f), FXPT_TYPE::BezierTo,
false);
pPathObj->m_Path.AppendPoint(CFX_PointF(10.6f, 11.15f), FXPT_TYPE::LineTo,
false);
pPathObj->m_Path.AppendPoint(CFX_PointF(11, 12.5f), FXPT_TYPE::LineTo, false);
pPathObj->m_Path.AppendPoint(CFX_PointF(11.46f, 12.67f), FXPT_TYPE::BezierTo,
false);
pPathObj->m_Path.AppendPoint(CFX_PointF(11.84f, 12.96f), FXPT_TYPE::BezierTo,
false);
pPathObj->m_Path.AppendPoint(CFX_PointF(12, 13.64f), FXPT_TYPE::BezierTo,
true);
pPathObj->m_FillType = FXFILL_WINDING;
pPathObj->m_bStroke = false;
auto pTestPage = pdfium::MakeUnique<CPDF_Page>(nullptr, nullptr, false);
CPDF_PageContentGenerator generator(pTestPage.get());
CFX_ByteTextBuf buf;
TestProcessPath(&generator, &buf, pPathObj.get());
EXPECT_EQ(
"q 3.102 4.67 m 5.45 0.29 l 4.24 3.15 4.65 2.98 3.456 0.24 c 10.6 11.15 "
"l 11 12.5 l 11.46 12.67 11.84 12.96 12 13.64 c h f Q\n",
buf.MakeString());
}
TEST_F(CPDF_PageContentGeneratorTest, ProcessGraphics) {
auto pPathObj = pdfium::MakeUnique<CPDF_PathObject>();
pPathObj->m_Path.AppendPoint(CFX_PointF(1, 2), FXPT_TYPE::MoveTo, false);
pPathObj->m_Path.AppendPoint(CFX_PointF(3, 4), FXPT_TYPE::LineTo, false);
pPathObj->m_Path.AppendPoint(CFX_PointF(5, 6), FXPT_TYPE::LineTo, true);
pPathObj->m_FillType = FXFILL_WINDING;
pPathObj->m_bStroke = true;
float rgb[3] = {0.5f, 0.7f, 0.35f};
CPDF_ColorSpace* pCS = CPDF_ColorSpace::GetStockCS(PDFCS_DEVICERGB);
pPathObj->m_ColorState.SetFillColor(pCS, rgb, 3);
float rgb2[3] = {1, 0.9f, 0};
pPathObj->m_ColorState.SetStrokeColor(pCS, rgb2, 3);
pPathObj->m_GeneralState.SetFillAlpha(0.5f);
pPathObj->m_GeneralState.SetStrokeAlpha(0.8f);
auto pDoc = pdfium::MakeUnique<CPDF_Document>(nullptr);
pDoc->CreateNewDoc();
CPDF_Dictionary* pPageDict = pDoc->CreateNewPage(0);
auto pTestPage = pdfium::MakeUnique<CPDF_Page>(pDoc.get(), pPageDict, false);
CPDF_PageContentGenerator generator(pTestPage.get());
CFX_ByteTextBuf buf;
TestProcessPath(&generator, &buf, pPathObj.get());
CFX_ByteString pathString = buf.MakeString();
// Color RGB values used are integers divided by 255.
EXPECT_EQ("q 0.501961 0.701961 0.34902 rg 1 0.901961 0 RG /",
pathString.Left(48));
EXPECT_EQ(" gs 1 2 m 3 4 l 5 6 l h B Q\n", pathString.Right(28));
ASSERT_TRUE(pathString.GetLength() > 76);
CPDF_Dictionary* externalGS = TestGetResource(
&generator, "ExtGState", pathString.Mid(48, pathString.GetLength() - 76));
ASSERT_TRUE(externalGS);
EXPECT_EQ(0.5f, externalGS->GetNumberFor("ca"));
EXPECT_EQ(0.8f, externalGS->GetNumberFor("CA"));
// Same path, now with a stroke.
pPathObj->m_GraphState.SetLineWidth(10.5f);
buf.Clear();
TestProcessPath(&generator, &buf, pPathObj.get());
CFX_ByteString pathString2 = buf.MakeString();
EXPECT_EQ("q 0.501961 0.701961 0.34902 rg 1 0.901961 0 RG 10.5 w /",
pathString2.Left(55));
EXPECT_EQ(" gs 1 2 m 3 4 l 5 6 l h B Q\n", pathString2.Right(28));
// Compare with the previous (should use same dictionary for gs)
EXPECT_EQ(pathString.GetLength() + 7, pathString2.GetLength());
EXPECT_EQ(pathString.Mid(48, pathString.GetLength() - 76),
pathString2.Mid(55, pathString2.GetLength() - 83));
}
TEST_F(CPDF_PageContentGeneratorTest, ProcessStandardText) {
// Checking font whose font dictionary is not yet indirect object.
auto pDoc = pdfium::MakeUnique<CPDF_Document>(nullptr);
pDoc->CreateNewDoc();
CPDF_Dictionary* pPageDict = pDoc->CreateNewPage(0);
auto pTestPage = pdfium::MakeUnique<CPDF_Page>(pDoc.get(), pPageDict, false);
CPDF_PageContentGenerator generator(pTestPage.get());
auto pTextObj = pdfium::MakeUnique<CPDF_TextObject>();
CPDF_Font* pFont = CPDF_Font::GetStockFont(pDoc.get(), "Times-Roman");
pTextObj->m_TextState.SetFont(pFont);
pTextObj->m_TextState.SetFontSize(10.0f);
pTextObj->Transform(CFX_Matrix(1, 0, 0, 1, 100, 100));
pTextObj->SetText("Hello World");
CFX_ByteTextBuf buf;
TestProcessText(&generator, &buf, pTextObj.get());
CFX_ByteString textString = buf.MakeString();
EXPECT_LT(61, textString.GetLength());
EXPECT_EQ("BT 1 0 0 1 100 100 Tm /", textString.Left(23));
EXPECT_EQ(" 10 Tf <48656C6C6F20576F726C64> Tj ET\n", textString.Right(38));
CPDF_Dictionary* fontDict = TestGetResource(
&generator, "Font", textString.Mid(23, textString.GetLength() - 61));
ASSERT_TRUE(fontDict);
EXPECT_EQ("Font", fontDict->GetStringFor("Type"));
EXPECT_EQ("Type1", fontDict->GetStringFor("Subtype"));
EXPECT_EQ("Times-Roman", fontDict->GetStringFor("BaseFont"));
}
TEST_F(CPDF_PageContentGeneratorTest, ProcessText) {
// Checking font whose font dictionary is already an indirect object.
auto pDoc = pdfium::MakeUnique<CPDF_Document>(nullptr);
pDoc->CreateNewDoc();
CPDF_Dictionary* pPageDict = pDoc->CreateNewPage(0);
auto pTestPage = pdfium::MakeUnique<CPDF_Page>(pDoc.get(), pPageDict, false);
CPDF_PageContentGenerator generator(pTestPage.get());
CFX_ByteTextBuf buf;
{
// Set the text object font and text
auto pTextObj = pdfium::MakeUnique<CPDF_TextObject>();
CPDF_Dictionary* pDict = pDoc->NewIndirect<CPDF_Dictionary>();
pDict->SetNewFor<CPDF_Name>("Type", "Font");
pDict->SetNewFor<CPDF_Name>("Subtype", "TrueType");
CPDF_Font* pFont = CPDF_Font::GetStockFont(pDoc.get(), "Arial");
pDict->SetNewFor<CPDF_Name>("BaseFont", pFont->GetBaseFont());
CPDF_Dictionary* pDesc = pDoc->NewIndirect<CPDF_Dictionary>();
pDesc->SetNewFor<CPDF_Name>("Type", "FontDescriptor");
pDesc->SetNewFor<CPDF_Name>("FontName", pFont->GetBaseFont());
pDict->SetNewFor<CPDF_Reference>("FontDescriptor", pDoc.get(),
pDesc->GetObjNum());
CPDF_Font* loadedFont = pDoc->LoadFont(pDict);
pTextObj->m_TextState.SetFont(loadedFont);
pTextObj->m_TextState.SetFontSize(15.5f);
pTextObj->SetText("I am indirect");
TestProcessText(&generator, &buf, pTextObj.get());
}
CFX_ByteString textString = buf.MakeString();
EXPECT_LT(63, textString.GetLength());
EXPECT_EQ("BT 1 0 0 1 0 0 Tm /", textString.Left(19));
EXPECT_EQ(" 15.5 Tf <4920616D20696E646972656374> Tj ET\n",
textString.Right(44));
CPDF_Dictionary* fontDict = TestGetResource(
&generator, "Font", textString.Mid(19, textString.GetLength() - 63));
ASSERT_TRUE(fontDict);
EXPECT_TRUE(fontDict->GetObjNum());
EXPECT_EQ("Font", fontDict->GetStringFor("Type"));
EXPECT_EQ("TrueType", fontDict->GetStringFor("Subtype"));
EXPECT_EQ("Helvetica", fontDict->GetStringFor("BaseFont"));
CPDF_Dictionary* fontDesc = fontDict->GetDictFor("FontDescriptor");
ASSERT_TRUE(fontDesc);
EXPECT_TRUE(fontDesc->GetObjNum());
EXPECT_EQ("FontDescriptor", fontDesc->GetStringFor("Type"));
EXPECT_EQ("Helvetica", fontDesc->GetStringFor("FontName"));
}
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