// 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) #include "testing/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())); { ScopedEmbedderTestPage page = LoadScopedPage(1); ASSERT_TRUE(page); FS_RECTF mediabox; EXPECT_TRUE(FPDFPage_GetMediaBox(page.get(), &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.get(), &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.get(), &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.get(), &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.get(), &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); } { ScopedEmbedderTestPage page = LoadScopedPage(3); ASSERT_TRUE(page); FS_RECTF mediabox; EXPECT_TRUE(FPDFPage_GetMediaBox(page.get(), &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.get(), &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.get(), nullptr, &cropbox.bottom, &cropbox.right, &cropbox.top)); EXPECT_FALSE(FPDFPage_GetCropBox(page.get(), &cropbox.left, nullptr, &cropbox.right, &cropbox.top)); EXPECT_FALSE(FPDFPage_GetCropBox(page.get(), &cropbox.left, &cropbox.bottom, nullptr, &cropbox.top)); EXPECT_FALSE(FPDFPage_GetCropBox(page.get(), &cropbox.left, &cropbox.bottom, &cropbox.right, nullptr)); EXPECT_FALSE( FPDFPage_GetCropBox(page.get(), nullptr, nullptr, nullptr, nullptr)); FS_RECTF bleedbox; EXPECT_TRUE(FPDFPage_GetBleedBox(page.get(), &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.get(), &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.get(), &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); } } TEST_F(FPDFTransformEmbedderTest, NoCropBox) { ASSERT_TRUE(OpenDocument("hello_world.pdf")); ASSERT_EQ(1, FPDF_GetPageCount(document())); ScopedEmbedderTestPage page = LoadScopedPage(0); ASSERT_TRUE(page); FS_RECTF cropbox = {-1.0f, 0.0f, 3.0f, -2.0f}; EXPECT_FALSE(FPDFPage_GetCropBox(page.get(), &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); } TEST_F(FPDFTransformEmbedderTest, NoBleedBox) { ASSERT_TRUE(OpenDocument("hello_world.pdf")); ASSERT_EQ(1, FPDF_GetPageCount(document())); ScopedEmbedderTestPage page = LoadScopedPage(0); ASSERT_TRUE(page); FS_RECTF bleedbox = {-1.0f, 10.f, 3.0f, -1.0f}; EXPECT_FALSE(FPDFPage_GetBleedBox(page.get(), &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); } TEST_F(FPDFTransformEmbedderTest, NoTrimBox) { ASSERT_TRUE(OpenDocument("hello_world.pdf")); ASSERT_EQ(1, FPDF_GetPageCount(document())); ScopedEmbedderTestPage page = LoadScopedPage(0); ASSERT_TRUE(page); FS_RECTF trimbox = {-11.0f, 0.0f, 3.0f, -10.0f}; EXPECT_FALSE(FPDFPage_GetTrimBox(page.get(), &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); } TEST_F(FPDFTransformEmbedderTest, NoArtBox) { ASSERT_TRUE(OpenDocument("hello_world.pdf")); ASSERT_EQ(1, FPDF_GetPageCount(document())); ScopedEmbedderTestPage page = LoadScopedPage(0); ASSERT_TRUE(page); FS_RECTF artbox = {-1.0f, 0.0f, 3.0f, -1.0f}; EXPECT_FALSE(FPDFPage_GetArtBox(page.get(), &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); } TEST_F(FPDFTransformEmbedderTest, SetCropBox) { const char* cropped_checksum = []() { if (CFX_DefaultRenderDevice::UseSkiaRenderer()) { return "4b9d2d2246be61c583f454245fe3172f"; } return "9937883715d5144c079fb8f7e3d4f395"; }(); { ASSERT_TRUE(OpenDocument("rectangles.pdf")); ScopedEmbedderTestPage page = LoadScopedPage(0); ASSERT_TRUE(page); { // Render the page as is. FS_RECTF cropbox; EXPECT_FALSE(FPDFPage_GetCropBox(page.get(), &cropbox.left, &cropbox.bottom, &cropbox.right, &cropbox.top)); const int page_width = static_cast(FPDF_GetPageWidth(page.get())); const int page_height = static_cast(FPDF_GetPageHeight(page.get())); EXPECT_EQ(200, page_width); EXPECT_EQ(300, page_height); ScopedFPDFBitmap bitmap = RenderLoadedPage(page.get()); CompareBitmap(bitmap.get(), page_width, page_height, RectanglesChecksum()); } FPDFPage_SetCropBox(page.get(), 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.get(), &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(FPDF_GetPageWidth(page.get())); const int page_height = static_cast(FPDF_GetPageHeight(page.get())); EXPECT_EQ(90, page_width); EXPECT_EQ(130, page_height); ScopedFPDFBitmap bitmap = RenderLoadedPage(page.get()); CompareBitmap(bitmap.get(), page_width, page_height, cropped_checksum); } } { // 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(FPDF_GetPageWidth(saved_page)); const int page_height = static_cast(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")); ScopedEmbedderTestPage page = LoadScopedPage(0); ASSERT_TRUE(page); { // Render the page as is. FS_RECTF mediabox; EXPECT_FALSE(FPDFPage_GetMediaBox(page.get(), &mediabox.left, &mediabox.bottom, &mediabox.right, &mediabox.top)); const int page_width = static_cast(FPDF_GetPageWidth(page.get())); const int page_height = static_cast(FPDF_GetPageHeight(page.get())); EXPECT_EQ(200, page_width); EXPECT_EQ(300, page_height); ScopedFPDFBitmap bitmap = RenderLoadedPage(page.get()); CompareBitmap(bitmap.get(), page_width, page_height, RectanglesChecksum()); } FPDFPage_SetMediaBox(page.get(), 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.get(), &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(FPDF_GetPageWidth(page.get())); const int page_height = static_cast(FPDF_GetPageHeight(page.get())); EXPECT_EQ(80, page_width); EXPECT_EQ(120, page_height); ScopedFPDFBitmap bitmap = RenderLoadedPage(page.get()); CompareBitmap(bitmap.get(), page_width, page_height, shrunk_checksum_set_media_box); } } { // 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(FPDF_GetPageWidth(saved_page)); const int page_height = static_cast(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")); ScopedEmbedderTestPage page = LoadScopedPage(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.get(), clip.get()); // TODO(tsepez): test how inserting path affects page rendering. } 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")); ScopedEmbedderTestPage page = LoadScopedPage(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.get(), nullptr, nullptr)); EXPECT_TRUE(FPDFPage_TransFormWithClip(page.get(), &half_matrix, nullptr)); EXPECT_TRUE(FPDFPage_TransFormWithClip(page.get(), nullptr, &clip_rect)); EXPECT_TRUE(FPDFPage_TransFormWithClip(page.get(), &half_matrix, &clip_rect)); } 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")); ScopedEmbedderTestPage page = LoadScopedPage(0); ASSERT_TRUE(page); EXPECT_TRUE(FPDFPage_TransFormWithClip(page.get(), &half_matrix, nullptr)); EXPECT_TRUE(FPDFPage_TransFormWithClip(page.get(), nullptr, &clip_rect)); EXPECT_TRUE(FPDFPage_TransFormWithClip(page.get(), &half_matrix, &clip_rect)); } TEST_F(FPDFTransformEmbedderTest, TransFormWithClipAndSave) { { ASSERT_TRUE(OpenDocument("rectangles.pdf")); ScopedEmbedderTestPage page = LoadScopedPage(0); ASSERT_TRUE(page); { // Render the page as is. const int page_width = static_cast(FPDF_GetPageWidth(page.get())); const int page_height = static_cast(FPDF_GetPageHeight(page.get())); EXPECT_EQ(200, page_width); EXPECT_EQ(300, page_height); ScopedFPDFBitmap bitmap = RenderLoadedPage(page.get()); 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.get(), &half_matrix, nullptr)); const int page_width = static_cast(FPDF_GetPageWidth(page.get())); const int page_height = static_cast(FPDF_GetPageHeight(page.get())); EXPECT_EQ(200, page_width); EXPECT_EQ(300, page_height); ScopedFPDFBitmap bitmap = RenderLoadedPage(page.get()); CompareBitmap(bitmap.get(), page_width, page_height, RectanglesChecksum()); } } { // 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(FPDF_GetPageWidth(saved_page)); const int page_height = static_cast(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) TEST_F(FPDFTransformEmbedderTest, TransFormWithClipAndSaveWithLocale) { pdfium::ScopedLocale scoped_locale("da_DK.UTF-8"); { ASSERT_TRUE(OpenDocument("rectangles.pdf")); ScopedEmbedderTestPage page = LoadScopedPage(0); ASSERT_TRUE(page); { // Render the page as is. const int page_width = static_cast(FPDF_GetPageWidth(page.get())); const int page_height = static_cast(FPDF_GetPageHeight(page.get())); EXPECT_EQ(200, page_width); EXPECT_EQ(300, page_height); ScopedFPDFBitmap bitmap = RenderLoadedPage(page.get()); 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.get(), &half_matrix, nullptr)); const int page_width = static_cast(FPDF_GetPageWidth(page.get())); const int page_height = static_cast(FPDF_GetPageHeight(page.get())); EXPECT_EQ(200, page_width); EXPECT_EQ(300, page_height); ScopedFPDFBitmap bitmap = RenderLoadedPage(page.get()); CompareBitmap(bitmap.get(), page_width, page_height, RectanglesChecksum()); } } { // 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(FPDF_GetPageWidth(saved_page)); const int page_height = static_cast(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)