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// Copyright 2016 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/fxge/include/fx_ge.h"
#include "core/fxge/skia/fx_skia_device.h"
#include "fpdfsdk/include/fsdk_define.h"
#include "public/fpdfview.h"
#include "testing/fx_string_testhelpers.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) {
FXTEXT_CHARPOS charPos[] = {{1, 0, 1, 4, false, {0, 0, 0, 0}, false}};
CFX_Font font;
FX_FLOAT fontSize = 1;
CFX_FontCache cache;
CFX_PathData clipPath, 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_PathData path1;
path1.AppendRect(0, 0, 1, 2);
CFX_Matrix matrix, matrix2;
matrix2.Translate(1, 0);
CFX_GraphStateData graphState;
if (state.m_save == State::Save::kYes)
driver->SaveState();
if (state.m_clip != State::Clip::kNo)
driver->SetClip_PathFill(&clipPath, &clipMatrix, 0);
if (state.m_graphic == State::Graphic::kPath) {
driver->DrawPath(&path1, &matrix, &graphState, 0xFF112233, 0,
FXFILL_WINDING, 0);
} else if (state.m_graphic == State::Graphic::kText) {
driver->DrawDeviceText(SK_ARRAY_COUNT(charPos), charPos, &font, &cache,
&matrix, fontSize, 0xFF445566);
}
if (state.m_save == State::Save::kYes)
driver->RestoreState(true);
CFX_PathData 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::LineCapRound;
else if (state.m_graphic == State::Graphic::kText)
fontSize = 2;
}
if (state.m_clip == State::Clip::kSame)
driver->SetClip_PathFill(&clipPath, &clipMatrix, 0);
else if (state.m_clip == State::Clip::kDifferentPath)
driver->SetClip_PathFill(&clipPath2, &clipMatrix, 0);
else if (state.m_clip == State::Clip::kDifferentMatrix)
driver->SetClip_PathFill(&clipPath, &clipMatrix2, 0);
if (state.m_graphic == State::Graphic::kPath) {
driver->DrawPath(&path2, &matrix2, &graphState, 0xFF112233, 0,
FXFILL_WINDING, 0);
} else if (state.m_graphic == State::Graphic::kText) {
driver->DrawDeviceText(SK_ARRAY_COUNT(charPos), charPos, &font, &cache,
&matrix2, fontSize, 0xFF445566);
}
if (state.m_save == State::Save::kYes)
driver->RestoreState(false);
driver->RestoreState(false);
}
void OutOfSequenceClipTest(CFX_SkiaDeviceDriver* driver, const State&) {
CFX_PathData clipPath;
clipPath.AppendRect(1, 0, 3, 1);
CFX_Matrix clipMatrix;
driver->SaveState();
driver->SetClip_PathFill(&clipPath, &clipMatrix, 0);
driver->RestoreState(true);
driver->SaveState();
driver->SetClip_PathFill(&clipPath, &clipMatrix, 0);
driver->RestoreState(false);
driver->RestoreState(false);
driver->SaveState();
driver->SaveState();
driver->SetClip_PathFill(&clipPath, &clipMatrix, 0);
driver->RestoreState(true);
driver->SetClip_PathFill(&clipPath, &clipMatrix, 0);
driver->RestoreState(false);
driver->RestoreState(false);
}
void Harness(void (*Test)(CFX_SkiaDeviceDriver*, const State&),
const State& state) {
int h = 1;
int w = 4;
FPDF_BITMAP bitmap = FPDFBitmap_Create(w, h, 1);
EXPECT_NE(nullptr, bitmap);
if (!bitmap)
return;
FPDFBitmap_FillRect(bitmap, 0, 0, w, h, 0x00000000);
CFX_FxgeDevice geDevice;
CFX_DIBitmap* pBitmap = CFXBitmapFromFPDFBitmap(bitmap);
geDevice.Attach(pBitmap, false, nullptr, false);
CFX_SkiaDeviceDriver* driver =
static_cast<CFX_SkiaDeviceDriver*>(geDevice.GetDeviceDriver());
(*Test)(driver, state);
driver->Flush();
uint32_t pixel = pBitmap->GetPixel(0, 0);
EXPECT_EQ(state.m_pixel, pixel);
#ifdef SK_DEBUG
if (!driver) // force dump to be linked in so it can be called from debugger
driver->Dump();
#endif
}
} // namespace
TEST(fxge, SkiaStateEmpty) {
Harness(&EmptyTest, {});
}
TEST(fxge, SkiaStatePath) {
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});
}
TEST(fxge, SkiaStateText) {
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) {
Harness(&OutOfSequenceClipTest, {});
}
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