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// Copyright 2018 The PDFium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "public/fpdf_transformpage.h"
#include "build/build_config.h"
#include "core/fxge/cfx_defaultrenderdevice.h"
#include "testing/embedder_test.h"
#include "testing/embedder_test_constants.h"
#if BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS) || BUILDFLAG(IS_FUCHSIA)
#include "third_party/base/test/scoped_locale.h"
#endif
using pdfium::RectanglesChecksum;
namespace {
const char* ShrunkChecksum() {
if (CFX_DefaultRenderDevice::UseSkiaRenderer()) {
return "78c52d6029283090036e6db6683401e2";
}
return "f4136cc9209207ab60eb8381a3df2e69";
}
} // namespace
class FPDFTransformEmbedderTest : public EmbedderTest {};
TEST_F(FPDFTransformEmbedderTest, GetBoundingBoxes) {
ASSERT_TRUE(OpenDocument("cropped_text.pdf"));
ASSERT_EQ(4, FPDF_GetPageCount(document()));
{
FPDF_PAGE page = LoadPage(1);
ASSERT_TRUE(page);
FS_RECTF mediabox;
EXPECT_TRUE(FPDFPage_GetMediaBox(page, &mediabox.left, &mediabox.bottom,
&mediabox.right, &mediabox.top));
EXPECT_EQ(-50, mediabox.left);
EXPECT_EQ(-50, mediabox.bottom);
EXPECT_EQ(200, mediabox.right);
EXPECT_EQ(200, mediabox.top);
FS_RECTF cropbox;
EXPECT_TRUE(FPDFPage_GetCropBox(page, &cropbox.left, &cropbox.bottom,
&cropbox.right, &cropbox.top));
EXPECT_EQ(50, cropbox.left);
EXPECT_EQ(50, cropbox.bottom);
EXPECT_EQ(150, cropbox.right);
EXPECT_EQ(150, cropbox.top);
FS_RECTF bleedbox;
EXPECT_TRUE(FPDFPage_GetBleedBox(page, &bleedbox.left, &bleedbox.bottom,
&bleedbox.right, &bleedbox.top));
EXPECT_EQ(0, bleedbox.left);
EXPECT_EQ(10, bleedbox.bottom);
EXPECT_EQ(150, bleedbox.right);
EXPECT_EQ(145, bleedbox.top);
FS_RECTF trimbox;
EXPECT_TRUE(FPDFPage_GetTrimBox(page, &trimbox.left, &trimbox.bottom,
&trimbox.right, &trimbox.top));
EXPECT_EQ(25, trimbox.left);
EXPECT_EQ(30, trimbox.bottom);
EXPECT_EQ(140, trimbox.right);
EXPECT_EQ(145, trimbox.top);
FS_RECTF artbox;
EXPECT_TRUE(FPDFPage_GetArtBox(page, &artbox.left, &artbox.bottom,
&artbox.right, &artbox.top));
EXPECT_EQ(50, artbox.left);
EXPECT_EQ(60, artbox.bottom);
EXPECT_EQ(135, artbox.right);
EXPECT_EQ(140, artbox.top);
UnloadPage(page);
}
{
FPDF_PAGE page = LoadPage(3);
ASSERT_TRUE(page);
FS_RECTF mediabox;
EXPECT_TRUE(FPDFPage_GetMediaBox(page, &mediabox.left, &mediabox.bottom,
&mediabox.right, &mediabox.top));
EXPECT_EQ(0, mediabox.left);
EXPECT_EQ(0, mediabox.bottom);
EXPECT_EQ(200, mediabox.right);
EXPECT_EQ(200, mediabox.top);
FS_RECTF cropbox;
EXPECT_TRUE(FPDFPage_GetCropBox(page, &cropbox.left, &cropbox.bottom,
&cropbox.right, &cropbox.top));
EXPECT_EQ(150, cropbox.left);
EXPECT_EQ(150, cropbox.bottom);
EXPECT_EQ(60, cropbox.right);
EXPECT_EQ(60, cropbox.top);
EXPECT_FALSE(FPDFPage_GetCropBox(page, nullptr, &cropbox.bottom,
&cropbox.right, &cropbox.top));
EXPECT_FALSE(FPDFPage_GetCropBox(page, &cropbox.left, nullptr,
&cropbox.right, &cropbox.top));
EXPECT_FALSE(FPDFPage_GetCropBox(page, &cropbox.left, &cropbox.bottom,
nullptr, &cropbox.top));
EXPECT_FALSE(FPDFPage_GetCropBox(page, &cropbox.left, &cropbox.bottom,
&cropbox.right, nullptr));
EXPECT_FALSE(FPDFPage_GetCropBox(page, nullptr, nullptr, nullptr, nullptr));
FS_RECTF bleedbox;
EXPECT_TRUE(FPDFPage_GetBleedBox(page, &bleedbox.left, &bleedbox.bottom,
&bleedbox.right, &bleedbox.top));
EXPECT_EQ(160, bleedbox.left);
EXPECT_EQ(165, bleedbox.bottom);
EXPECT_EQ(0, bleedbox.right);
EXPECT_EQ(10, bleedbox.top);
FS_RECTF trimbox;
EXPECT_TRUE(FPDFPage_GetTrimBox(page, &trimbox.left, &trimbox.bottom,
&trimbox.right, &trimbox.top));
EXPECT_EQ(155, trimbox.left);
EXPECT_EQ(165, trimbox.bottom);
EXPECT_EQ(25, trimbox.right);
EXPECT_EQ(30, trimbox.top);
FS_RECTF artbox;
EXPECT_TRUE(FPDFPage_GetArtBox(page, &artbox.left, &artbox.bottom,
&artbox.right, &artbox.top));
EXPECT_EQ(140, artbox.left);
EXPECT_EQ(145, artbox.bottom);
EXPECT_EQ(65, artbox.right);
EXPECT_EQ(70, artbox.top);
UnloadPage(page);
}
}
TEST_F(FPDFTransformEmbedderTest, NoCropBox) {
ASSERT_TRUE(OpenDocument("hello_world.pdf"));
ASSERT_EQ(1, FPDF_GetPageCount(document()));
FPDF_PAGE page = LoadPage(0);
ASSERT_TRUE(page);
FS_RECTF cropbox = {-1.0f, 0.0f, 3.0f, -2.0f};
EXPECT_FALSE(FPDFPage_GetCropBox(page, &cropbox.left, &cropbox.bottom,
&cropbox.right, &cropbox.top));
EXPECT_EQ(-1.0f, cropbox.left);
EXPECT_EQ(-2.0f, cropbox.bottom);
EXPECT_EQ(3.0f, cropbox.right);
EXPECT_EQ(0.0f, cropbox.top);
UnloadPage(page);
}
TEST_F(FPDFTransformEmbedderTest, NoBleedBox) {
ASSERT_TRUE(OpenDocument("hello_world.pdf"));
ASSERT_EQ(1, FPDF_GetPageCount(document()));
FPDF_PAGE page = LoadPage(0);
ASSERT_TRUE(page);
FS_RECTF bleedbox = {-1.0f, 10.f, 3.0f, -1.0f};
EXPECT_FALSE(FPDFPage_GetBleedBox(page, &bleedbox.left, &bleedbox.bottom,
&bleedbox.right, &bleedbox.top));
EXPECT_EQ(-1.0f, bleedbox.left);
EXPECT_EQ(-1.0f, bleedbox.bottom);
EXPECT_EQ(3.0f, bleedbox.right);
EXPECT_EQ(10.0f, bleedbox.top);
UnloadPage(page);
}
TEST_F(FPDFTransformEmbedderTest, NoTrimBox) {
ASSERT_TRUE(OpenDocument("hello_world.pdf"));
ASSERT_EQ(1, FPDF_GetPageCount(document()));
FPDF_PAGE page = LoadPage(0);
ASSERT_TRUE(page);
FS_RECTF trimbox = {-11.0f, 0.0f, 3.0f, -10.0f};
EXPECT_FALSE(FPDFPage_GetTrimBox(page, &trimbox.left, &trimbox.bottom,
&trimbox.right, &trimbox.top));
EXPECT_EQ(-11.0f, trimbox.left);
EXPECT_EQ(-10.0f, trimbox.bottom);
EXPECT_EQ(3.0f, trimbox.right);
EXPECT_EQ(0.0f, trimbox.top);
UnloadPage(page);
}
TEST_F(FPDFTransformEmbedderTest, NoArtBox) {
ASSERT_TRUE(OpenDocument("hello_world.pdf"));
ASSERT_EQ(1, FPDF_GetPageCount(document()));
FPDF_PAGE page = LoadPage(0);
ASSERT_TRUE(page);
FS_RECTF artbox = {-1.0f, 0.0f, 3.0f, -1.0f};
EXPECT_FALSE(FPDFPage_GetArtBox(page, &artbox.left, &artbox.bottom,
&artbox.right, &artbox.top));
EXPECT_EQ(-1.0f, artbox.left);
EXPECT_EQ(-1.0f, artbox.bottom);
EXPECT_EQ(3.0f, artbox.right);
EXPECT_EQ(0.0f, artbox.top);
UnloadPage(page);
}
TEST_F(FPDFTransformEmbedderTest, SetCropBox) {
const char* cropped_checksum = []() {
if (CFX_DefaultRenderDevice::UseSkiaRenderer()) {
return "4b9d2d2246be61c583f454245fe3172f";
}
return "9937883715d5144c079fb8f7e3d4f395";
}();
{
ASSERT_TRUE(OpenDocument("rectangles.pdf"));
FPDF_PAGE page = LoadPage(0);
ASSERT_TRUE(page);
{
// Render the page as is.
FS_RECTF cropbox;
EXPECT_FALSE(FPDFPage_GetCropBox(page, &cropbox.left, &cropbox.bottom,
&cropbox.right, &cropbox.top));
const int page_width = static_cast<int>(FPDF_GetPageWidth(page));
const int page_height = static_cast<int>(FPDF_GetPageHeight(page));
EXPECT_EQ(200, page_width);
EXPECT_EQ(300, page_height);
ScopedFPDFBitmap bitmap = RenderLoadedPage(page);
CompareBitmap(bitmap.get(), page_width, page_height,
RectanglesChecksum());
}
FPDFPage_SetCropBox(page, 10, 20, 100, 150);
{
// Render the page after setting the CropBox.
// Note that the change affects the rendering, as expected.
// It behaves just like the case below, rather than the case above.
FS_RECTF cropbox;
EXPECT_TRUE(FPDFPage_GetCropBox(page, &cropbox.left, &cropbox.bottom,
&cropbox.right, &cropbox.top));
EXPECT_EQ(10, cropbox.left);
EXPECT_EQ(20, cropbox.bottom);
EXPECT_EQ(100, cropbox.right);
EXPECT_EQ(150, cropbox.top);
const int page_width = static_cast<int>(FPDF_GetPageWidth(page));
const int page_height = static_cast<int>(FPDF_GetPageHeight(page));
EXPECT_EQ(90, page_width);
EXPECT_EQ(130, page_height);
ScopedFPDFBitmap bitmap = RenderLoadedPage(page);
CompareBitmap(bitmap.get(), page_width, page_height, cropped_checksum);
}
UnloadPage(page);
}
{
// Save a copy, open the copy, and render it.
// Note that it renders the rotation.
EXPECT_TRUE(FPDF_SaveAsCopy(document(), this, 0));
ASSERT_TRUE(OpenSavedDocument());
FPDF_PAGE saved_page = LoadSavedPage(0);
ASSERT_TRUE(saved_page);
FS_RECTF cropbox;
EXPECT_TRUE(FPDFPage_GetCropBox(saved_page, &cropbox.left, &cropbox.bottom,
&cropbox.right, &cropbox.top));
EXPECT_EQ(10, cropbox.left);
EXPECT_EQ(20, cropbox.bottom);
EXPECT_EQ(100, cropbox.right);
EXPECT_EQ(150, cropbox.top);
const int page_width = static_cast<int>(FPDF_GetPageWidth(saved_page));
const int page_height = static_cast<int>(FPDF_GetPageHeight(saved_page));
EXPECT_EQ(90, page_width);
EXPECT_EQ(130, page_height);
ScopedFPDFBitmap bitmap = RenderSavedPage(saved_page);
CompareBitmap(bitmap.get(), page_width, page_height, cropped_checksum);
CloseSavedPage(saved_page);
CloseSavedDocument();
}
}
TEST_F(FPDFTransformEmbedderTest, SetMediaBox) {
const char* shrunk_checksum_set_media_box = []() {
if (CFX_DefaultRenderDevice::UseSkiaRenderer()) {
return "9f28f0610a7f789c24cfd5f9bd5dc3de";
}
return "eab5958f62f7ce65d7c32de98389fee1";
}();
{
ASSERT_TRUE(OpenDocument("rectangles.pdf"));
FPDF_PAGE page = LoadPage(0);
ASSERT_TRUE(page);
{
// Render the page as is.
FS_RECTF mediabox;
EXPECT_FALSE(FPDFPage_GetMediaBox(page, &mediabox.left, &mediabox.bottom,
&mediabox.right, &mediabox.top));
const int page_width = static_cast<int>(FPDF_GetPageWidth(page));
const int page_height = static_cast<int>(FPDF_GetPageHeight(page));
EXPECT_EQ(200, page_width);
EXPECT_EQ(300, page_height);
ScopedFPDFBitmap bitmap = RenderLoadedPage(page);
CompareBitmap(bitmap.get(), page_width, page_height,
RectanglesChecksum());
}
FPDFPage_SetMediaBox(page, 20, 30, 100, 150);
{
// Render the page after setting the MediaBox.
// Note that the change affects the rendering, as expected.
// It behaves just like the case below, rather than the case above.
FS_RECTF mediabox;
EXPECT_TRUE(FPDFPage_GetMediaBox(page, &mediabox.left, &mediabox.bottom,
&mediabox.right, &mediabox.top));
EXPECT_EQ(20, mediabox.left);
EXPECT_EQ(30, mediabox.bottom);
EXPECT_EQ(100, mediabox.right);
EXPECT_EQ(150, mediabox.top);
const int page_width = static_cast<int>(FPDF_GetPageWidth(page));
const int page_height = static_cast<int>(FPDF_GetPageHeight(page));
EXPECT_EQ(80, page_width);
EXPECT_EQ(120, page_height);
ScopedFPDFBitmap bitmap = RenderLoadedPage(page);
CompareBitmap(bitmap.get(), page_width, page_height,
shrunk_checksum_set_media_box);
}
UnloadPage(page);
}
{
// Save a copy, open the copy, and render it.
// Note that it renders the rotation.
EXPECT_TRUE(FPDF_SaveAsCopy(document(), this, 0));
ASSERT_TRUE(OpenSavedDocument());
FPDF_PAGE saved_page = LoadSavedPage(0);
ASSERT_TRUE(saved_page);
FS_RECTF mediabox;
EXPECT_TRUE(FPDFPage_GetMediaBox(saved_page, &mediabox.left,
&mediabox.bottom, &mediabox.right,
&mediabox.top));
EXPECT_EQ(20, mediabox.left);
EXPECT_EQ(30, mediabox.bottom);
EXPECT_EQ(100, mediabox.right);
EXPECT_EQ(150, mediabox.top);
const int page_width = static_cast<int>(FPDF_GetPageWidth(saved_page));
const int page_height = static_cast<int>(FPDF_GetPageHeight(saved_page));
EXPECT_EQ(80, page_width);
EXPECT_EQ(120, page_height);
ScopedFPDFBitmap bitmap = RenderSavedPage(saved_page);
CompareBitmap(bitmap.get(), page_width, page_height,
shrunk_checksum_set_media_box);
CloseSavedPage(saved_page);
CloseSavedDocument();
}
}
TEST_F(FPDFTransformEmbedderTest, ClipPath) {
ASSERT_TRUE(OpenDocument("hello_world.pdf"));
FPDF_PAGE page = LoadPage(0);
ASSERT_TRUE(page);
{
ScopedFPDFClipPath clip(FPDF_CreateClipPath(10.0f, 10.0f, 90.0f, 90.0f));
EXPECT_TRUE(clip);
// NULL arg call is a no-op.
FPDFPage_InsertClipPath(nullptr, clip.get());
// Do actual work.
FPDFPage_InsertClipPath(page, clip.get());
// TODO(tsepez): test how inserting path affects page rendering.
}
UnloadPage(page);
}
TEST_F(FPDFTransformEmbedderTest, TransFormWithClip) {
const FS_MATRIX half_matrix{0.5, 0, 0, 0.5, 0, 0};
const FS_RECTF clip_rect = {0.0f, 0.0f, 20.0f, 10.0f};
ASSERT_TRUE(OpenDocument("hello_world.pdf"));
FPDF_PAGE page = LoadPage(0);
ASSERT_TRUE(page);
EXPECT_FALSE(FPDFPage_TransFormWithClip(nullptr, nullptr, nullptr));
EXPECT_FALSE(FPDFPage_TransFormWithClip(nullptr, &half_matrix, nullptr));
EXPECT_FALSE(FPDFPage_TransFormWithClip(nullptr, nullptr, &clip_rect));
EXPECT_FALSE(FPDFPage_TransFormWithClip(nullptr, &half_matrix, &clip_rect));
EXPECT_FALSE(FPDFPage_TransFormWithClip(page, nullptr, nullptr));
EXPECT_TRUE(FPDFPage_TransFormWithClip(page, &half_matrix, nullptr));
EXPECT_TRUE(FPDFPage_TransFormWithClip(page, nullptr, &clip_rect));
EXPECT_TRUE(FPDFPage_TransFormWithClip(page, &half_matrix, &clip_rect));
UnloadPage(page);
}
TEST_F(FPDFTransformEmbedderTest, TransFormWithClipWithPatterns) {
const FS_MATRIX half_matrix{0.5, 0, 0, 0.5, 0, 0};
const FS_RECTF clip_rect = {0.0f, 0.0f, 20.0f, 10.0f};
ASSERT_TRUE(OpenDocument("bug_547706.pdf"));
FPDF_PAGE page = LoadPage(0);
ASSERT_TRUE(page);
EXPECT_TRUE(FPDFPage_TransFormWithClip(page, &half_matrix, nullptr));
EXPECT_TRUE(FPDFPage_TransFormWithClip(page, nullptr, &clip_rect));
EXPECT_TRUE(FPDFPage_TransFormWithClip(page, &half_matrix, &clip_rect));
UnloadPage(page);
}
TEST_F(FPDFTransformEmbedderTest, TransFormWithClipAndSave) {
{
ASSERT_TRUE(OpenDocument("rectangles.pdf"));
FPDF_PAGE page = LoadPage(0);
ASSERT_TRUE(page);
{
// Render the page as is.
const int page_width = static_cast<int>(FPDF_GetPageWidth(page));
const int page_height = static_cast<int>(FPDF_GetPageHeight(page));
EXPECT_EQ(200, page_width);
EXPECT_EQ(300, page_height);
ScopedFPDFBitmap bitmap = RenderLoadedPage(page);
CompareBitmap(bitmap.get(), page_width, page_height,
RectanglesChecksum());
}
{
// Render the page after transforming.
// Note that the change should affect the rendering, but does not.
// It should behaves just like the case below, rather than the case above.
// TODO(crbug.com/pdfium/1328): The checksum after invoking
// `FPDFPage_TransFormWithClip()` below should match `ShrunkChecksum()`.
const FS_MATRIX half_matrix{0.5, 0, 0, 0.5, 0, 0};
EXPECT_TRUE(FPDFPage_TransFormWithClip(page, &half_matrix, nullptr));
const int page_width = static_cast<int>(FPDF_GetPageWidth(page));
const int page_height = static_cast<int>(FPDF_GetPageHeight(page));
EXPECT_EQ(200, page_width);
EXPECT_EQ(300, page_height);
ScopedFPDFBitmap bitmap = RenderLoadedPage(page);
CompareBitmap(bitmap.get(), page_width, page_height,
RectanglesChecksum());
}
UnloadPage(page);
}
{
// Save a copy, open the copy, and render it.
// Note that it renders the transform.
EXPECT_TRUE(FPDF_SaveAsCopy(document(), this, 0));
ASSERT_TRUE(OpenSavedDocument());
FPDF_PAGE saved_page = LoadSavedPage(0);
ASSERT_TRUE(saved_page);
const int page_width = static_cast<int>(FPDF_GetPageWidth(saved_page));
const int page_height = static_cast<int>(FPDF_GetPageHeight(saved_page));
EXPECT_EQ(200, page_width);
EXPECT_EQ(300, page_height);
ScopedFPDFBitmap bitmap = RenderSavedPage(saved_page);
CompareBitmap(bitmap.get(), page_width, page_height, ShrunkChecksum());
CloseSavedPage(saved_page);
CloseSavedDocument();
}
}
#if BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS) || BUILDFLAG(IS_FUCHSIA)
TEST_F(FPDFTransformEmbedderTest, TransFormWithClipAndSaveWithLocale) {
pdfium::base::ScopedLocale scoped_locale("da_DK.UTF-8");
{
ASSERT_TRUE(OpenDocument("rectangles.pdf"));
FPDF_PAGE page = LoadPage(0);
ASSERT_TRUE(page);
{
// Render the page as is.
const int page_width = static_cast<int>(FPDF_GetPageWidth(page));
const int page_height = static_cast<int>(FPDF_GetPageHeight(page));
EXPECT_EQ(200, page_width);
EXPECT_EQ(300, page_height);
ScopedFPDFBitmap bitmap = RenderLoadedPage(page);
CompareBitmap(bitmap.get(), page_width, page_height,
RectanglesChecksum());
}
{
// Render the page after transforming.
// Note that the change should affect the rendering, but does not.
// It should behaves just like the case below, rather than the case above.
// TODO(crbug.com/pdfium/1328): The checksum after invoking
// `FPDFPage_TransFormWithClip()` below should match `ShrunkChecksum()`.
const FS_MATRIX half_matrix{0.5, 0, 0, 0.5, 0, 0};
EXPECT_TRUE(FPDFPage_TransFormWithClip(page, &half_matrix, nullptr));
const int page_width = static_cast<int>(FPDF_GetPageWidth(page));
const int page_height = static_cast<int>(FPDF_GetPageHeight(page));
EXPECT_EQ(200, page_width);
EXPECT_EQ(300, page_height);
ScopedFPDFBitmap bitmap = RenderLoadedPage(page);
CompareBitmap(bitmap.get(), page_width, page_height,
RectanglesChecksum());
}
UnloadPage(page);
}
{
// Save a copy, open the copy, and render it.
// Note that it renders the transform.
EXPECT_TRUE(FPDF_SaveAsCopy(document(), this, 0));
ASSERT_TRUE(OpenSavedDocument());
FPDF_PAGE saved_page = LoadSavedPage(0);
ASSERT_TRUE(saved_page);
const int page_width = static_cast<int>(FPDF_GetPageWidth(saved_page));
const int page_height = static_cast<int>(FPDF_GetPageHeight(saved_page));
EXPECT_EQ(200, page_width);
EXPECT_EQ(300, page_height);
ScopedFPDFBitmap bitmap = RenderSavedPage(saved_page);
CompareBitmap(bitmap.get(), page_width, page_height, ShrunkChecksum());
CloseSavedPage(saved_page);
CloseSavedDocument();
}
}
#endif // BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS) ||
// BUILDFLAG(IS_FUCHSIA)