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// Copyright 2016 The PDFium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "core/fxge/skia/fx_skia_device.h"
#include <memory>
#include "core/fxge/cfx_defaultrenderdevice.h"
#include "core/fxge/cfx_fillrenderoptions.h"
#include "core/fxge/cfx_font.h"
#include "core/fxge/cfx_graphstatedata.h"
#include "core/fxge/cfx_path.h"
#include "core/fxge/cfx_renderdevice.h"
#include "core/fxge/cfx_textrenderoptions.h"
#include "core/fxge/text_char_pos.h"
#include "fpdfsdk/cpdfsdk_helpers.h"
#include "public/cpp/fpdf_scopers.h"
#include "public/fpdfview.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/skia/include/core/SkPictureRecorder.h"
namespace {
struct State {
enum class Change { kNo, kYes };
enum class Save { kNo, kYes };
enum class Clip { kNo, kSame, kDifferentPath, kDifferentMatrix };
enum class Graphic { kNone, kPath, kText };
Change m_change;
Save m_save;
Clip m_clip;
Graphic m_graphic;
uint32_t m_pixel;
};
void EmptyTest(CFX_SkiaDeviceDriver* driver, const State&) {
driver->SaveState();
driver->RestoreState(true);
driver->RestoreState(false);
}
void CommonTest(CFX_SkiaDeviceDriver* driver, const State& state) {
TextCharPos charPos[1];
charPos[0].m_Origin = CFX_PointF(0, 1);
charPos[0].m_GlyphIndex = 1;
charPos[0].m_FontCharWidth = 4;
CFX_Font font;
float fontSize = 1;
CFX_Path clipPath;
CFX_Path clipPath2;
clipPath.AppendRect(0, 0, 3, 1);
clipPath2.AppendRect(0, 0, 2, 1);
CFX_Matrix clipMatrix;
CFX_Matrix clipMatrix2(1, 0, 0, 1, 0, 1);
driver->SaveState();
CFX_Path path1;
path1.AppendRect(0, 0, 1, 2);
CFX_Matrix matrix;
CFX_Matrix matrix2;
matrix2.Translate(1, 0);
CFX_GraphStateData graphState;
static constexpr CFX_TextRenderOptions kTextOptions;
if (state.m_save == State::Save::kYes)
driver->SaveState();
if (state.m_clip != State::Clip::kNo)
driver->SetClip_PathFill(clipPath, &clipMatrix, CFX_FillRenderOptions());
if (state.m_graphic == State::Graphic::kPath) {
driver->DrawPath(path1, &matrix, &graphState, 0xFF112233, 0,
CFX_FillRenderOptions::WindingOptions(),
BlendMode::kNormal);
} else if (state.m_graphic == State::Graphic::kText) {
driver->DrawDeviceText(charPos, &font, matrix, fontSize, 0xFF445566,
kTextOptions);
}
if (state.m_save == State::Save::kYes)
driver->RestoreState(true);
CFX_Path path2;
path2.AppendRect(0, 0, 2, 2);
if (state.m_change == State::Change::kYes) {
if (state.m_graphic == State::Graphic::kPath)
graphState.m_LineCap = CFX_GraphStateData::LineCap::kRound;
else if (state.m_graphic == State::Graphic::kText)
fontSize = 2;
}
if (state.m_clip == State::Clip::kSame)
driver->SetClip_PathFill(clipPath, &clipMatrix, CFX_FillRenderOptions());
else if (state.m_clip == State::Clip::kDifferentPath)
driver->SetClip_PathFill(clipPath2, &clipMatrix, CFX_FillRenderOptions());
else if (state.m_clip == State::Clip::kDifferentMatrix)
driver->SetClip_PathFill(clipPath, &clipMatrix2, CFX_FillRenderOptions());
if (state.m_graphic == State::Graphic::kPath) {
driver->DrawPath(path2, &matrix2, &graphState, 0xFF112233, 0,
CFX_FillRenderOptions::WindingOptions(),
BlendMode::kNormal);
} else if (state.m_graphic == State::Graphic::kText) {
driver->DrawDeviceText(charPos, &font, matrix2, fontSize, 0xFF445566,
kTextOptions);
}
if (state.m_save == State::Save::kYes)
driver->RestoreState(false);
driver->RestoreState(false);
}
void OutOfSequenceClipTest(CFX_SkiaDeviceDriver* driver, const State&) {
CFX_Path clipPath;
clipPath.AppendRect(1, 0, 3, 1);
CFX_Matrix clipMatrix;
driver->SaveState();
driver->SetClip_PathFill(clipPath, &clipMatrix, CFX_FillRenderOptions());
driver->RestoreState(true);
driver->SaveState();
driver->SetClip_PathFill(clipPath, &clipMatrix, CFX_FillRenderOptions());
driver->RestoreState(false);
driver->RestoreState(false);
driver->SaveState();
driver->SaveState();
driver->SetClip_PathFill(clipPath, &clipMatrix, CFX_FillRenderOptions());
driver->RestoreState(true);
driver->SetClip_PathFill(clipPath, &clipMatrix, CFX_FillRenderOptions());
driver->RestoreState(false);
driver->RestoreState(false);
}
void Harness(void (*Test)(CFX_SkiaDeviceDriver*, const State&),
const State& state) {
constexpr int kWidth = 4;
constexpr int kHeight = 1;
ScopedFPDFBitmap bitmap(FPDFBitmap_Create(kWidth, kHeight, 1));
ASSERT_TRUE(bitmap);
FPDFBitmap_FillRect(bitmap.get(), 0, 0, kWidth, kHeight, 0x00000000);
RetainPtr<CFX_DIBitmap> pBitmap(CFXDIBitmapFromFPDFBitmap(bitmap.get()));
auto driver = CFX_SkiaDeviceDriver::Create(pBitmap, false, nullptr, false);
ASSERT_TRUE(driver);
(*Test)(driver.get(), state);
uint32_t pixel = pBitmap->GetPixel(0, 0);
EXPECT_EQ(state.m_pixel, pixel);
}
} // namespace
TEST(fxge, SkiaStateEmpty) {
if (!CFX_DefaultRenderDevice::SkiaIsDefaultRenderer())
return;
Harness(&EmptyTest, {});
}
TEST(fxge, SkiaStatePath) {
if (!CFX_DefaultRenderDevice::SkiaIsDefaultRenderer())
return;
Harness(&CommonTest, {State::Change::kNo, State::Save::kYes,
State::Clip::kSame, State::Graphic::kPath, 0xFF112233});
Harness(&CommonTest,
{State::Change::kNo, State::Save::kYes, State::Clip::kDifferentPath,
State::Graphic::kPath, 0xFF112233});
Harness(&CommonTest, {State::Change::kNo, State::Save::kYes, State::Clip::kNo,
State::Graphic::kPath, 0xFF112233});
Harness(&CommonTest, {State::Change::kYes, State::Save::kNo, State::Clip::kNo,
State::Graphic::kPath, 0xFF112233});
Harness(&CommonTest, {State::Change::kNo, State::Save::kNo, State::Clip::kNo,
State::Graphic::kPath, 0xFF112233});
}
// TODO(crbug.com/pdfium/11): Fix this test and enable.
TEST(fxge, DISABLED_SkiaStateText) {
if (!CFX_DefaultRenderDevice::SkiaIsDefaultRenderer())
return;
Harness(&CommonTest,
{State::Change::kNo, State::Save::kYes, State::Clip::kDifferentMatrix,
State::Graphic::kText, 0xFF445566});
Harness(&CommonTest, {State::Change::kNo, State::Save::kYes,
State::Clip::kSame, State::Graphic::kText, 0xFF445566});
}
TEST(fxge, SkiaStateOOSClip) {
if (!CFX_DefaultRenderDevice::SkiaIsDefaultRenderer())
return;
Harness(&OutOfSequenceClipTest, {});
}