Flutter Impeller
impeller::interop::testing Namespace Reference

Classes

class  ContextSub
 
class  FlagObject
 
class  TestObject
 
class  PlaygroundTest
 

Typedefs

using InteropPlaygroundTest = PlaygroundTest
 

Functions

 INSTANTIATE_PLAYGROUND_SUITE (InteropPlaygroundTest)
 
 TEST_P (InteropPlaygroundTest, CanCreateContext)
 
 TEST_P (InteropPlaygroundTest, CanCreateDisplayListBuilder)
 
 TEST_P (InteropPlaygroundTest, CanCreateSurface)
 
 TEST_P (InteropPlaygroundTest, CanDrawRect)
 
 TEST_P (InteropPlaygroundTest, CanDrawImage)
 
 TEST_P (InteropPlaygroundTest, CanCreateOpenGLImage)
 
 TEST_P (InteropPlaygroundTest, ClearsOpenGLStancilStateAfterTransition)
 
 TEST_P (InteropPlaygroundTest, CanCreateParagraphs)
 
 TEST_P (InteropPlaygroundTest, CanCreateDecorations)
 
 TEST_P (InteropPlaygroundTest, CanCreateShapes)
 
 TEST_P (InteropPlaygroundTest, CanCreateParagraphsWithCustomFont)
 
static void DrawTextFrame (const hpp::TypographyContext &tc, hpp::DisplayListBuilder &builder, hpp::ParagraphStyle &p_style, const hpp::Paint &bg, ImpellerColor color, ImpellerTextAlignment align, float x_offset)
 
 TEST_P (InteropPlaygroundTest, CanRenderTextAlignments)
 
 TEST_P (InteropPlaygroundTest, CanRenderShadows)
 
 TEST_P (InteropPlaygroundTest, CanMeasureText)
 
 TEST_P (InteropPlaygroundTest, CanGetPathBounds)
 
 TEST_P (InteropPlaygroundTest, CanControlEllipses)
 
 TEST_P (InteropPlaygroundTest, CanCreateFragmentProgramColorFilters)
 
 TEST_P (InteropPlaygroundTest, MappingsReleaseTheirDataOnDestruction)
 
 IMPELLER_DEFINE_HANDLE (FlagHandle)
 
 IMPELLER_DEFINE_HANDLE (TestHandle)
 
 TEST (InteropObjectTest, CanCreateScoped)
 
 TEST (InteropObjectTest, CanCreate)
 
 TEST (InteropObjectTest, CanCopyAssignMove)
 
static void SetupImpellerHPPProcTableOnce ()
 
static ScopedObject< SurfaceCreateSharedSurface (PlaygroundBackend backend, Context &context, std::shared_ptr< impeller::Surface > shared_surface)
 
static ScopedObject< ContextCreateSharedContext (PlaygroundBackend backend, std::shared_ptr< impeller::Context > shared_context)
 

Typedef Documentation

◆ InteropPlaygroundTest

Function Documentation

◆ CreateSharedContext()

static ScopedObject<Context> impeller::interop::testing::CreateSharedContext ( PlaygroundBackend  backend,
std::shared_ptr< impeller::Context shared_context 
)
static

Definition at line 146 of file playground_test.cc.

148  {
149  switch (backend) {
150 #if IMPELLER_ENABLE_METAL
151  case PlaygroundBackend::kMetal:
152  return ContextMTL::Create(shared_context);
153 #endif
154 #if IMPELLER_ENABLE_OPENGLES
155  case PlaygroundBackend::kOpenGLES:
156  return ContextGLES::Create(std::move(shared_context));
157 #endif
158 #if IMPELLER_ENABLE_VULKAN
159  case PlaygroundBackend::kVulkan:
160  return ContextVK::Create(std::move(shared_context));
161 #endif
162  default:
163  return nullptr;
164  }
165  FML_UNREACHABLE();
166 }
ScopedObject< Object > Create(CtorArgs &&... args)
Definition: object.h:161

References impeller::interop::ContextMTL::Create(), impeller::interop::ContextVK::Create(), impeller::interop::ContextGLES::Create(), impeller::kMetal, impeller::kOpenGLES, and impeller::kVulkan.

Referenced by impeller::interop::testing::PlaygroundTest::GetInteropContext().

◆ CreateSharedSurface()

static ScopedObject<Surface> impeller::interop::testing::CreateSharedSurface ( PlaygroundBackend  backend,
Context context,
std::shared_ptr< impeller::Surface shared_surface 
)
static

Definition at line 101 of file playground_test.cc.

104  {
105  switch (backend) {
106 #if IMPELLER_ENABLE_METAL
107  case PlaygroundBackend::kMetal:
108  return Adopt<Surface>(new SurfaceMTL(context, std::move(shared_surface)));
109 #endif
110 
111 #if IMPELLER_ENABLE_OPENGLES
112  case PlaygroundBackend::kOpenGLES:
113  return Adopt<Surface>(
114  new SurfaceGLES(context, std::move(shared_surface)));
115 #endif
116 
117 #if IMPELLER_ENABLE_VULKAN
118  case PlaygroundBackend::kVulkan:
119  return Adopt<Surface>(new SurfaceVK(context, std::move(shared_surface)));
120 #endif
121  default:
122  return nullptr;
123  }
124  FML_UNREACHABLE();
125 }

References impeller::kMetal, impeller::kOpenGLES, and impeller::kVulkan.

Referenced by impeller::interop::testing::PlaygroundTest::OpenPlaygroundHere().

◆ DrawTextFrame()

static void impeller::interop::testing::DrawTextFrame ( const hpp::TypographyContext &  tc,
hpp::DisplayListBuilder &  builder,
hpp::ParagraphStyle &  p_style,
const hpp::Paint &  bg,
ImpellerColor  color,
ImpellerTextAlignment  align,
float  x_offset 
)
static

Definition at line 429 of file impeller_unittests.cc.

435  {
436  const char text[] =
437  "Lorem ipsum dolor sit amet, consectetur adipiscing elit.";
438 
439  hpp::Paint fg;
440 
441  // Draw a box.
442  fg.SetColor(color);
443  fg.SetDrawStyle(kImpellerDrawStyleStroke);
444  ImpellerRect box_rect = {10 + x_offset, 10, 200, 200};
445  builder.DrawRect(box_rect, fg);
446 
447  // Draw text.
448  fg.SetDrawStyle(kImpellerDrawStyleFill);
449  p_style.SetForeground(fg);
450  p_style.SetBackground(bg);
451  p_style.SetTextAlignment(align);
452 
453  hpp::ParagraphBuilder p_builder(tc);
454  p_builder.PushStyle(p_style);
455  p_builder.AddText(reinterpret_cast<const uint8_t*>(text), sizeof(text));
456 
457  auto left_p = p_builder.Build(box_rect.width - 20.0);
458  ImpellerPoint pt = {20.0f + x_offset, 20.0f};
459  float w = left_p.GetMaxWidth();
460  float h = left_p.GetHeight();
461  builder.DrawParagraph(left_p, pt);
462  fg.SetDrawStyle(kImpellerDrawStyleStroke);
463 
464  // Draw an inner box around the paragraph layout.
465  ImpellerRect inner_box_rect = {pt.x, pt.y, w, h};
466  builder.DrawRect(inner_box_rect, fg);
467 }
@ kImpellerDrawStyleStroke
Definition: impeller.h:408
@ kImpellerDrawStyleFill
Definition: impeller.h:407
float width
Definition: impeller.h:505

References kImpellerDrawStyleFill, kImpellerDrawStyleStroke, ImpellerRect::width, ImpellerPoint::x, and ImpellerPoint::y.

Referenced by TEST_P().

◆ IMPELLER_DEFINE_HANDLE() [1/2]

impeller::interop::testing::IMPELLER_DEFINE_HANDLE ( FlagHandle  )

◆ IMPELLER_DEFINE_HANDLE() [2/2]

impeller::interop::testing::IMPELLER_DEFINE_HANDLE ( TestHandle  )

◆ INSTANTIATE_PLAYGROUND_SUITE()

impeller::interop::testing::INSTANTIATE_PLAYGROUND_SUITE ( InteropPlaygroundTest  )

◆ SetupImpellerHPPProcTableOnce()

static void impeller::interop::testing::SetupImpellerHPPProcTableOnce ( )
static

Definition at line 30 of file playground_test.cc.

30  {
31  static std::once_flag sOnceFlag;
32  std::call_once(sOnceFlag, []() {
33  std::map<std::string, void*> proc_map;
34 #define IMPELLER_HPP_PROC(name) \
35  proc_map[#name] = reinterpret_cast<void*>(&name);
37 #undef IMPELLER_HPP_PROC
39  [&](auto name) { return proc_map.at(name); });
40  });
41 }
#define IMPELLER_HPP_EACH_PROC(PROC)
Definition: impeller.hpp:48
bool Initialize(const std::function< void *(const char *function_name)> &resolver)
Definition: impeller.hpp:227
#define IMPELLER_HPP_PROC(name)

References IMPELLER_HPP_NAMESPACE::gGlobalProcTable, IMPELLER_HPP_EACH_PROC, IMPELLER_HPP_PROC, and IMPELLER_HPP_NAMESPACE::ProcTable::Initialize().

Referenced by impeller::interop::testing::PlaygroundTest::PlaygroundTest().

◆ TEST() [1/3]

impeller::interop::testing::TEST ( InteropObjectTest  ,
CanCopyAssignMove   
)

Definition at line 77 of file object_unittests.cc.

77  {
78  auto o = Create<TestObject>(1, 2.3, 'd');
79  ASSERT_EQ(o->GetRefCountForTests(), 1u);
80  {
81  auto o1 = o; // NOLINT(performance-unnecessary-copy-initialization)
82  ASSERT_EQ(o->GetRefCountForTests(), 2u);
83  auto o2 = o; // NOLINT(performance-unnecessary-copy-initialization)
84  ASSERT_EQ(o->GetRefCountForTests(), 3u);
85  auto o3 = o1; // NOLINT(performance-unnecessary-copy-initialization)
86  ASSERT_EQ(o->GetRefCountForTests(), 4u);
87  }
88  ASSERT_EQ(o->GetRefCountForTests(), 1u);
89 
90  {
91  auto o1(o); // NOLINT(performance-unnecessary-copy-initialization)
92  ASSERT_EQ(o->GetRefCountForTests(), 2u);
93  ASSERT_EQ(o1->GetRefCountForTests(), 2u);
94  }
95 
96  auto move_o = std::move(o);
97  ASSERT_EQ(move_o->GetRefCountForTests(), 1u);
98 }

◆ TEST() [2/3]

impeller::interop::testing::TEST ( InteropObjectTest  ,
CanCreate   
)

Definition at line 70 of file object_unittests.cc.

70  {
71  auto object = Create<TestObject>(1, 1.3, 'c');
72  ASSERT_EQ(object->GetArg1(), 1);
73  ASSERT_EQ(object->GetArg2(), 1.3);
74  ASSERT_EQ(object->GetArg3(), 'c');
75 }

◆ TEST() [3/3]

impeller::interop::testing::TEST ( InteropObjectTest  ,
CanCreateScoped   
)

Definition at line 54 of file object_unittests.cc.

54  {
55  bool destructed = false;
56  {
57  auto object = Adopt(new FlagObject(destructed)); //
58  }
59  ASSERT_TRUE(destructed);
60 
61  destructed = false;
62  {
63  auto object = Ref(new FlagObject(destructed));
64  // New objects start with retain count of 1.
65  object->Release();
66  }
67  ASSERT_TRUE(destructed);
68 }
ScopedObject< Object > Ref(Object *object)
Definition: object.h:146
ScopedObject< Object > Adopt(Object *object)
Definition: object.h:151

References impeller::interop::Adopt(), and impeller::interop::Ref().

◆ TEST_P() [1/18]

impeller::interop::testing::TEST_P ( InteropPlaygroundTest  ,
CanControlEllipses   
)

Definition at line 635 of file impeller_unittests.cc.

635  {
636  hpp::TypographyContext context;
637  auto style = hpp::ParagraphStyle{};
638  style.SetFontSize(50);
639  style.SetForeground(hpp::Paint{}.SetColor({.red = 1.0, .alpha = 1.0}));
640  const auto text = std::string{"The quick brown fox jumped over the lazy dog"};
641  style.SetEllipsis("🐶");
642  auto para1 =
643  hpp::ParagraphBuilder{context}.PushStyle(style).AddText(text).Build(250);
644  style.SetForeground(hpp::Paint{}.SetColor({.green = 1.0, .alpha = 1.0}));
645  style.SetEllipsis(nullptr);
646  auto para2 =
647  hpp::ParagraphBuilder{context}.PushStyle(style).AddText(text).Build(250);
648  auto dl = hpp::DisplayListBuilder{}
649  .DrawParagraph(para1, {100, 100})
650  .DrawParagraph(para2, {100, 200})
651  .Build();
652  ASSERT_TRUE(
653  OpenPlaygroundHere([&](const auto& context, const auto& surface) -> bool {
654  hpp::Surface window(surface.GetC());
655  window.Draw(dl);
656  return true;
657  }));
658 }

◆ TEST_P() [2/18]

impeller::interop::testing::TEST_P ( InteropPlaygroundTest  ,
CanCreateContext   
)

Definition at line 33 of file impeller_unittests.cc.

33  {
34  auto context = CreateContext();
35  ASSERT_TRUE(context);
36 }
std::shared_ptr< Context > CreateContext()

References impeller::android::testing::CreateContext().

◆ TEST_P() [3/18]

impeller::interop::testing::TEST_P ( InteropPlaygroundTest  ,
CanCreateDecorations   
)

Definition at line 296 of file impeller_unittests.cc.

296  {
297  hpp::TypographyContext context;
298  auto para =
299  hpp::ParagraphBuilder(context)
300  .PushStyle(
301  hpp::ParagraphStyle{}
302  .SetForeground(hpp::Paint{}.SetColor({1.0, 0.0, 0.0, 1.0}))
303  .SetFontSize(150.0f)
304  .SetTextDecoration(ImpellerTextDecoration{
307  .color = ImpellerColor{0.0, 1.0, 0.0, 0.75},
309  .thickness_multiplier = 1.5,
310  }))
311  .AddText(std::string{"Holy text decorations Batman!"})
312  .Build(900);
313  auto dl = hpp::DisplayListBuilder{}.DrawParagraph(para, {100, 100}).Build();
314  ASSERT_TRUE(
315  OpenPlaygroundHere([&](const auto& context, const auto& surface) -> bool {
316  hpp::Surface window(surface.GetC());
317  window.Draw(dl);
318  return true;
319  }));
320 }
@ kImpellerTextDecorationTypeLineThrough
Definition: impeller.h:488
@ kImpellerTextDecorationTypeUnderline
Definition: impeller.h:486
@ kImpellerTextDecorationStyleWavy
Definition: impeller.h:496
int types
A mask of ImpellerTextDecorationTypes to enable.
Definition: impeller.h:648

References kImpellerTextDecorationStyleWavy, kImpellerTextDecorationTypeLineThrough, kImpellerTextDecorationTypeUnderline, and ImpellerTextDecoration::types.

◆ TEST_P() [4/18]

impeller::interop::testing::TEST_P ( InteropPlaygroundTest  ,
CanCreateDisplayListBuilder   
)

Definition at line 38 of file impeller_unittests.cc.

38  {
39  hpp::DisplayListBuilder builder;
40  ASSERT_TRUE(builder);
41  ASSERT_TRUE(ToImpellerType(builder.GetTransform()).IsIdentity());
42  ASSERT_EQ(builder.GetSaveCount(), 1u);
43  builder.Save();
44  ASSERT_EQ(builder.GetSaveCount(), 2u);
45  builder.Restore();
46  ASSERT_EQ(builder.GetSaveCount(), 1u);
47 }
constexpr Matrix ToImpellerType(const ImpellerMatrix &m)
Definition: formats.h:213
constexpr bool IsIdentity() const
Definition: matrix.h:414

References impeller::Matrix::IsIdentity(), and impeller::interop::ToImpellerType().

◆ TEST_P() [5/18]

impeller::interop::testing::TEST_P ( InteropPlaygroundTest  ,
CanCreateFragmentProgramColorFilters   
)

Definition at line 660 of file impeller_unittests.cc.

660  {
661  auto iplr = OpenAssetAsHPPMapping("interop_runtime_stage_cs.frag.iplr");
662  ASSERT_TRUE(!!iplr);
663  auto program = hpp::FragmentProgram::WithData(std::move(iplr));
664  ASSERT_TRUE(program);
665  auto context = GetHPPContext();
666  auto filter =
667  hpp::ImageFilter::FragmentProgram(context, program, {}, nullptr);
668  ASSERT_TRUE(filter);
669  auto bay_bridge = OpenAssetAsHPPTexture("bay_bridge.jpg");
670  ASSERT_TRUE(bay_bridge);
671 
672  float size_data[4] = {500, 500};
673  auto uniform_data = hpp::Mapping{reinterpret_cast<const uint8_t*>(&size_data),
674  sizeof(size_data), nullptr};
675 
676  auto dl = hpp::DisplayListBuilder{}
677  .DrawRect({10, 10, 500, 500},
678  hpp::Paint{}
679  .SetColor({1.0, 1.0, 1.0, 1.0})
680  .SetColorSource(hpp::ColorSource::FragmentProgram(
681  context, //
682  program, //
683  {bay_bridge.Get()}, // samplers
684  &uniform_data // uniform data
685  )))
686  .Build();
687  ASSERT_TRUE(
688  OpenPlaygroundHere([&](const auto& context, const auto& surface) -> bool {
689  hpp::Surface window(surface.GetC());
690  window.Draw(dl);
691  return true;
692  }));
693 }

◆ TEST_P() [6/18]

impeller::interop::testing::TEST_P ( InteropPlaygroundTest  ,
CanCreateOpenGLImage   
)

Definition at line 133 of file impeller_unittests.cc.

133  {
134  auto context = GetInteropContext();
135 
136  auto impeller_context = context->GetContext();
137 
138  if (impeller_context->GetBackendType() !=
140  GTEST_SKIP() << "This test works with OpenGL handles is only suitable for "
141  "that backend.";
142  return;
143  }
144 
145  const auto& gl_context = ContextGLES::Cast(*impeller_context);
146  const auto& gl = gl_context.GetReactor()->GetProcTable();
147 
148  constexpr ISize external_texture_size = {200, 300};
149 
150  Allocation texture_data;
151  ASSERT_TRUE(
152  texture_data.Truncate(Bytes{external_texture_size.Area() * 4u}, false));
153 
154  const auto kClearColor = Color::Fuchsia().ToR8G8B8A8();
155 
156  for (size_t i = 0; i < external_texture_size.Area() * 4u; i += 4u) {
157  memcpy(texture_data.GetBuffer() + i, kClearColor.data(), 4);
158  }
159 
160  GLuint external_texture = GL_NONE;
161  gl.GenTextures(1u, &external_texture);
162  ASSERT_NE(external_texture, 0u);
163  gl.BindTexture(GL_TEXTURE_2D, external_texture);
164  gl.TexImage2D(GL_TEXTURE_2D, //
165  0, //
166  GL_RGBA, //
167  external_texture_size.width, //
168  external_texture_size.height, //
169  0, //
170  GL_RGBA, //
171  GL_UNSIGNED_BYTE, //
172  texture_data.GetBuffer() //
173  );
174 
175  ImpellerTextureDescriptor desc = {};
177  desc.size = {external_texture_size.width, external_texture_size.height};
178  desc.mip_count = 1u;
179  auto texture = Adopt<Texture>(ImpellerTextureCreateWithOpenGLTextureHandleNew(
180  context.GetC(), //
181  &desc, //
182  external_texture //
183  ));
184  ASSERT_TRUE(texture);
185 
186  ASSERT_EQ(ImpellerTextureGetOpenGLHandle(texture.GetC()), external_texture);
187 
188  auto builder =
189  Adopt<DisplayListBuilder>(ImpellerDisplayListBuilderNew(nullptr));
190  ImpellerPoint point = {100, 100};
191  ImpellerDisplayListBuilderDrawTexture(builder.GetC(), texture.GetC(), &point,
193  nullptr);
194  auto dl = Adopt<DisplayList>(
196  ASSERT_TRUE(
197  OpenPlaygroundHere([&](const auto& context, const auto& surface) -> bool {
198  ImpellerSurfaceDrawDisplayList(surface.GetC(), dl.GetC());
199  return true;
200  }));
201 }
@ kImpellerTextureSamplingLinear
Definition: impeller.h:430
IMPELLER_EXPORT void ImpellerDisplayListBuilderDrawTexture(ImpellerDisplayListBuilder IMPELLER_NONNULL builder, ImpellerTexture IMPELLER_NONNULL texture, const ImpellerPoint *IMPELLER_NONNULL point, ImpellerTextureSampling sampling, ImpellerPaint IMPELLER_NULLABLE paint)
Draw a texture at the specified point.
IMPELLER_EXPORT uint64_t ImpellerTextureGetOpenGLHandle(ImpellerTexture IMPELLER_NONNULL texture)
Get the OpenGL handle associated with this texture. If this is not an OpenGL texture,...
IMPELLER_EXPORT IMPELLER_NODISCARD ImpellerDisplayList IMPELLER_NULLABLE ImpellerDisplayListBuilderCreateDisplayListNew(ImpellerDisplayListBuilder IMPELLER_NONNULL builder)
Create a new display list using the rendering intent already encoded in the builder....
IMPELLER_EXPORT bool ImpellerSurfaceDrawDisplayList(ImpellerSurface IMPELLER_NONNULL surface, ImpellerDisplayList IMPELLER_NONNULL display_list)
Draw a display list onto the surface. The same display list can be drawn multiple times to different ...
IMPELLER_EXPORT IMPELLER_NODISCARD ImpellerTexture IMPELLER_NULLABLE ImpellerTextureCreateWithOpenGLTextureHandleNew(ImpellerContext IMPELLER_NONNULL context, const ImpellerTextureDescriptor *IMPELLER_NONNULL descriptor, uint64_t handle)
Create a texture with an externally created OpenGL texture handle.
IMPELLER_EXPORT IMPELLER_NODISCARD ImpellerDisplayListBuilder IMPELLER_NULLABLE ImpellerDisplayListBuilderNew(const ImpellerRect *IMPELLER_NULLABLE cull_rect)
Create a new display list builder.
@ kImpellerPixelFormatRGBA8888
Definition: impeller.h:425
AllocationSize< 1u > Bytes
ISize64 ISize
Definition: size.h:162
int64_t width
Definition: impeller.h:520
ImpellerPixelFormat pixel_format
Definition: impeller.h:621
ImpellerISize size
Definition: impeller.h:622

References impeller::BackendCast< ContextGLES, Context >::Cast(), impeller::Color::Fuchsia(), impeller::Allocation::GetBuffer(), impeller::interop::ImpellerDisplayListBuilderCreateDisplayListNew(), impeller::interop::ImpellerDisplayListBuilderDrawTexture(), impeller::interop::ImpellerDisplayListBuilderNew(), impeller::interop::ImpellerSurfaceDrawDisplayList(), impeller::interop::ImpellerTextureCreateWithOpenGLTextureHandleNew(), impeller::interop::ImpellerTextureGetOpenGLHandle(), kImpellerPixelFormatRGBA8888, kImpellerTextureSamplingLinear, impeller::Context::kOpenGLES, ImpellerTextureDescriptor::mip_count, ImpellerTextureDescriptor::pixel_format, ImpellerTextureDescriptor::size, impeller::Color::ToR8G8B8A8(), impeller::Allocation::Truncate(), and ImpellerISize::width.

◆ TEST_P() [7/18]

impeller::interop::testing::TEST_P ( InteropPlaygroundTest  ,
CanCreateParagraphs   
)

Definition at line 241 of file impeller_unittests.cc.

241  {
242  // Create a typography context.
243  hpp::TypographyContext type_context;
244  ASSERT_TRUE(type_context);
245 
246  // Create a builder.
247  hpp::ParagraphBuilder builder(type_context);
248  ASSERT_TRUE(builder);
249 
250  // Create a paragraph style with the font size and foreground and background
251  // colors.
252  hpp::ParagraphStyle style;
253  ASSERT_TRUE(style);
254  style.SetFontSize(150.0f);
255  style.SetHeight(2.0f);
256 
257  {
258  hpp::Paint paint;
259  ASSERT_TRUE(paint);
260  paint.SetColor({1.0, 0.0, 0.0, 1.0});
261  style.SetForeground(paint);
262  }
263 
264  {
265  hpp::Paint paint;
266  paint.SetColor({1.0, 1.0, 1.0, 1.0});
267  style.SetBackground(paint);
268  }
269 
270  // Push the style onto the style stack.
271  builder.PushStyle(style);
272  std::string text = "the ⚡️ quick ⚡️ brown 🦊 fox jumps over the lazy dog 🐶.";
273 
274  // Add the paragraph text data.
275  builder.AddText(text);
276 
277  // Layout and build the paragraph.
278  auto paragraph = builder.Build(1200.0f);
279  ASSERT_TRUE(paragraph);
280 
281  // Create a display list with just the paragraph drawn into it.
282  hpp::DisplayListBuilder dl_builder;
283  dl_builder.DrawParagraph(paragraph, {20, 20});
284 
285  // Build the display list.
286  auto dl = dl_builder.Build();
287 
288  ASSERT_TRUE(
289  OpenPlaygroundHere([&](const auto& context, const auto& surface) -> bool {
290  hpp::Surface window(surface.GetC());
291  window.Draw(dl);
292  return true;
293  }));
294 }

◆ TEST_P() [8/18]

impeller::interop::testing::TEST_P ( InteropPlaygroundTest  ,
CanCreateParagraphsWithCustomFont   
)

Definition at line 355 of file impeller_unittests.cc.

355  {
356  // Create a typography context.
357  auto type_context = Adopt<TypographyContext>(ImpellerTypographyContextNew());
358  ASSERT_TRUE(type_context);
359 
360  // Open the custom font file.
361  std::unique_ptr<fml::Mapping> font_data =
362  flutter::testing::OpenFixtureAsMapping("wtf.otf");
363  ASSERT_NE(font_data, nullptr);
364  ASSERT_GT(font_data->GetSize(), 0u);
365  ImpellerMapping font_data_mapping = {
366  .data = font_data->GetMapping(),
367  .length = font_data->GetSize(),
368  .on_release = [](auto ctx) {
369  delete reinterpret_cast<fml::Mapping*>(ctx);
370  }};
371  auto registered =
372  ImpellerTypographyContextRegisterFont(type_context.GetC(), //
373  &font_data_mapping, //
374  font_data.release(), //
375  nullptr //
376  );
377  ASSERT_TRUE(registered);
378 
379  // Create a builder.
380  auto builder =
381  Adopt<ParagraphBuilder>(ImpellerParagraphBuilderNew(type_context.GetC()));
382  ASSERT_TRUE(builder);
383 
384  // Create a paragraph style with the font size and foreground and background
385  // colors.
386  auto style = Adopt<ParagraphStyle>(ImpellerParagraphStyleNew());
387  ASSERT_TRUE(style);
388  ImpellerParagraphStyleSetFontSize(style.GetC(), 150.0f);
389  ImpellerParagraphStyleSetFontFamily(style.GetC(), "WhatTheFlutter");
390 
391  {
392  auto paint = Adopt<Paint>(ImpellerPaintNew());
393  ASSERT_TRUE(paint);
394  ImpellerColor color = {0.0, 1.0, 1.0, 1.0};
395  ImpellerPaintSetColor(paint.GetC(), &color);
396  ImpellerParagraphStyleSetForeground(style.GetC(), paint.GetC());
397  }
398 
399  // Push the style onto the style stack.
400  ImpellerParagraphBuilderPushStyle(builder.GetC(), style.GetC());
401  std::string text = "0F0F0F0";
402 
403  // Add the paragraph text data.
404  ImpellerParagraphBuilderAddText(builder.GetC(),
405  reinterpret_cast<const uint8_t*>(text.data()),
406  text.size());
407 
408  // Layout and build the paragraph.
409  auto paragraph = Adopt<Paragraph>(
410  ImpellerParagraphBuilderBuildParagraphNew(builder.GetC(), 1200.0f));
411  ASSERT_TRUE(paragraph);
412 
413  // Create a display list with just the paragraph drawn into it.
414  auto dl_builder =
415  Adopt<DisplayListBuilder>(ImpellerDisplayListBuilderNew(nullptr));
416  ImpellerPoint point = {20, 20};
417  ImpellerDisplayListBuilderDrawParagraph(dl_builder.GetC(), paragraph.GetC(),
418  &point);
419  auto dl = Adopt<DisplayList>(
421 
422  ASSERT_TRUE(
423  OpenPlaygroundHere([&](const auto& context, const auto& surface) -> bool {
424  ImpellerSurfaceDrawDisplayList(surface.GetC(), dl.GetC());
425  return true;
426  }));
427 } // namespace impeller::interop::testing
IMPELLER_EXPORT void ImpellerDisplayListBuilderDrawParagraph(ImpellerDisplayListBuilder IMPELLER_NONNULL builder, ImpellerParagraph IMPELLER_NONNULL paragraph, const ImpellerPoint *IMPELLER_NONNULL point)
Draw a paragraph at the specified point.
IMPELLER_EXPORT bool ImpellerTypographyContextRegisterFont(ImpellerTypographyContext IMPELLER_NONNULL context, const ImpellerMapping *IMPELLER_NONNULL contents, void *IMPELLER_NULLABLE contents_on_release_user_data, const char *IMPELLER_NULLABLE family_name_alias)
Register a custom font.
IMPELLER_EXPORT void ImpellerParagraphBuilderAddText(ImpellerParagraphBuilder IMPELLER_NONNULL paragraph_builder, const uint8_t *IMPELLER_NULLABLE data, uint32_t length)
Add UTF-8 encoded text to the paragraph. The text will be styled according to the paragraph style alr...
IMPELLER_EXPORT IMPELLER_NODISCARD ImpellerPaint IMPELLER_NULLABLE ImpellerPaintNew()
Create a new paint with default values.
IMPELLER_EXPORT void ImpellerPaintSetColor(ImpellerPaint IMPELLER_NONNULL paint, const ImpellerColor *IMPELLER_NONNULL color)
Set the paint color.
IMPELLER_EXPORT IMPELLER_NODISCARD ImpellerParagraph IMPELLER_NULLABLE ImpellerParagraphBuilderBuildParagraphNew(ImpellerParagraphBuilder IMPELLER_NONNULL paragraph_builder, float width)
Layout and build a new paragraph using the specified width. The resulting paragraph is immutable....
IMPELLER_EXPORT void ImpellerParagraphBuilderPushStyle(ImpellerParagraphBuilder IMPELLER_NONNULL paragraph_builder, ImpellerParagraphStyle IMPELLER_NONNULL style)
Push a new paragraph style onto the paragraph style stack managed by the paragraph builder.
IMPELLER_EXPORT void ImpellerParagraphStyleSetFontSize(ImpellerParagraphStyle IMPELLER_NONNULL paragraph_style, float size)
Set the font size.
IMPELLER_EXPORT IMPELLER_NODISCARD ImpellerParagraphStyle IMPELLER_NULLABLE ImpellerParagraphStyleNew()
Create a new paragraph style.
IMPELLER_EXPORT void ImpellerParagraphStyleSetForeground(ImpellerParagraphStyle IMPELLER_NONNULL paragraph_style, ImpellerPaint IMPELLER_NONNULL paint)
Set the paint used to render the text glyph contents.
IMPELLER_EXPORT IMPELLER_NODISCARD ImpellerTypographyContext IMPELLER_NULLABLE ImpellerTypographyContextNew()
Create a new typography contents.
IMPELLER_EXPORT void ImpellerParagraphStyleSetFontFamily(ImpellerParagraphStyle IMPELLER_NONNULL paragraph_style, const char *IMPELLER_NONNULL family_name)
Set the font family.
IMPELLER_EXPORT IMPELLER_NODISCARD ImpellerParagraphBuilder IMPELLER_NULLABLE ImpellerParagraphBuilderNew(ImpellerTypographyContext IMPELLER_NONNULL context)
Create a new paragraph builder.
const uint8_t *IMPELLER_NONNULL data
Definition: impeller.h:627

References ImpellerMapping::data, impeller::interop::ImpellerDisplayListBuilderCreateDisplayListNew(), impeller::interop::ImpellerDisplayListBuilderDrawParagraph(), impeller::interop::ImpellerDisplayListBuilderNew(), impeller::interop::ImpellerPaintNew(), impeller::interop::ImpellerPaintSetColor(), impeller::interop::ImpellerParagraphBuilderAddText(), impeller::interop::ImpellerParagraphBuilderBuildParagraphNew(), impeller::interop::ImpellerParagraphBuilderNew(), impeller::interop::ImpellerParagraphBuilderPushStyle(), impeller::interop::ImpellerParagraphStyleNew(), impeller::interop::ImpellerParagraphStyleSetFontFamily(), impeller::interop::ImpellerParagraphStyleSetFontSize(), impeller::interop::ImpellerParagraphStyleSetForeground(), impeller::interop::ImpellerSurfaceDrawDisplayList(), impeller::interop::ImpellerTypographyContextNew(), and impeller::interop::ImpellerTypographyContextRegisterFont().

◆ TEST_P() [9/18]

impeller::interop::testing::TEST_P ( InteropPlaygroundTest  ,
CanCreateShapes   
)

Definition at line 322 of file impeller_unittests.cc.

322  {
323  hpp::DisplayListBuilder builder;
324 
325  hpp::Paint red_paint;
326  red_paint.SetColor({1.0, 0.0, 0.0, 1.0});
327  red_paint.SetStrokeWidth(10.0);
328 
329  builder.Translate(10, 10);
330  builder.DrawRect({0, 0, 100, 100}, red_paint);
331  builder.Translate(100, 100);
332  builder.DrawOval({0, 0, 100, 100}, red_paint);
333  builder.Translate(100, 100);
334  builder.DrawLine({0, 0}, {100, 100}, red_paint);
335 
336  builder.Translate(100, 100);
337  ImpellerRoundingRadii radii = {};
338  radii.top_left = {10, 10};
339  radii.bottom_right = {10, 10};
340  builder.DrawRoundedRect({0, 0, 100, 100}, radii, red_paint);
341 
342  builder.Translate(100, 100);
343  builder.DrawPath(hpp::PathBuilder{}.AddOval({0, 0, 100, 100}).Build(),
344  red_paint);
345 
346  auto dl = builder.Build();
347  ASSERT_TRUE(
348  OpenPlaygroundHere([&](const auto& context, const auto& surface) -> bool {
349  hpp::Surface window(surface.GetC());
350  window.Draw(dl);
351  return true;
352  }));
353 }
flutter::DlPathBuilder PathBuilder
Definition: tessellator.h:22
ImpellerPoint top_left
Definition: impeller.h:606
ImpellerPoint bottom_right
Definition: impeller.h:609

References ImpellerRoundingRadii::bottom_right, and ImpellerRoundingRadii::top_left.

◆ TEST_P() [10/18]

impeller::interop::testing::TEST_P ( InteropPlaygroundTest  ,
CanCreateSurface   
)

Definition at line 49 of file impeller_unittests.cc.

49  {
50  if (GetBackend() != PlaygroundBackend::kOpenGLES) {
51  GTEST_SKIP()
52  << "This test checks wrapping FBOs which is an OpenGL ES only call.";
53  return;
54  }
55  auto context = CreateContext();
56  ASSERT_TRUE(context);
57  const auto window_size = GetWindowSize();
58  ImpellerISize size = {window_size.width, window_size.height};
59  auto surface = Adopt<Surface>(ImpellerSurfaceCreateWrappedFBONew(
60  context.GetC(), //
61  0u, //
63  &size) //
64  );
65  ASSERT_TRUE(surface);
66 }
IMPELLER_EXPORT IMPELLER_NODISCARD ImpellerSurface IMPELLER_NULLABLE ImpellerSurfaceCreateWrappedFBONew(ImpellerContext IMPELLER_NONNULL context, uint64_t fbo, ImpellerPixelFormat format, const ImpellerISize *IMPELLER_NONNULL size)
Create a new surface by wrapping an existing framebuffer object. The framebuffer must be complete as ...

References impeller::android::testing::CreateContext(), impeller::interop::ImpellerSurfaceCreateWrappedFBONew(), kImpellerPixelFormatRGBA8888, impeller::kOpenGLES, and ImpellerISize::width.

◆ TEST_P() [11/18]

impeller::interop::testing::TEST_P ( InteropPlaygroundTest  ,
CanDrawImage   
)

Definition at line 99 of file impeller_unittests.cc.

99  {
100  auto compressed = LoadFixtureImageCompressed(
101  flutter::testing::OpenFixtureAsMapping("boston.jpg"));
102  ASSERT_NE(compressed, nullptr);
103  auto decompressed = std::make_shared<impeller::DecompressedImage>(
104  compressed->Decode().ConvertToRGBA());
105  ASSERT_TRUE(decompressed->IsValid());
106  auto mapping = std::make_unique<hpp::Mapping>(
107  decompressed->GetAllocation()->GetMapping(),
108  decompressed->GetAllocation()->GetSize(), [decompressed]() {
109  // Mapping will be dropped on the floor.
110  });
111 
112  auto context = GetHPPContext();
113  ImpellerTextureDescriptor desc = {};
115  desc.size = {decompressed->GetSize().width, decompressed->GetSize().height};
116  desc.mip_count = 1u;
117  auto texture = hpp::Texture::WithContents(context, desc, std::move(mapping));
118  ASSERT_TRUE(texture);
119 
120  auto dl = hpp::DisplayListBuilder{}
121  .DrawTexture(texture, {100, 100},
122  kImpellerTextureSamplingLinear, hpp::Paint{})
123  .Build();
124 
125  ASSERT_TRUE(
126  OpenPlaygroundHere([&](const auto& context, const auto& surface) -> bool {
127  hpp::Surface window(surface.GetC());
128  window.Draw(dl);
129  return true;
130  }));
131 }

References kImpellerPixelFormatRGBA8888, kImpellerTextureSamplingLinear, ImpellerTextureDescriptor::mip_count, ImpellerTextureDescriptor::pixel_format, ImpellerTextureDescriptor::size, and ImpellerISize::width.

◆ TEST_P() [12/18]

impeller::interop::testing::TEST_P ( InteropPlaygroundTest  ,
CanDrawRect   
)

Definition at line 68 of file impeller_unittests.cc.

68  {
69  auto builder =
70  Adopt<DisplayListBuilder>(ImpellerDisplayListBuilderNew(nullptr));
71  auto paint = Adopt<Paint>(ImpellerPaintNew());
72  ImpellerColor color = {0.0, 0.0, 1.0, 1.0};
73  ImpellerPaintSetColor(paint.GetC(), &color);
74  ImpellerRect rect = {10, 20, 100, 200};
75  ImpellerDisplayListBuilderDrawRect(builder.GetC(), &rect, paint.GetC());
76  color = {1.0, 0.0, 0.0, 1.0};
77  ImpellerPaintSetColor(paint.GetC(), &color);
78  ImpellerDisplayListBuilderTranslate(builder.GetC(), 110, 210);
79  ImpellerMatrix scale_transform = {
80  // clang-format off
81  2.0, 0.0, 0.0, 0.0, //
82  0.0, 2.0, 0.0, 0.0, //
83  0.0, 0.0, 1.0, 0.0, //
84  0.0, 0.0, 0.0, 1.0, //
85  // clang-format on
86  };
87  ImpellerDisplayListBuilderTransform(builder.GetC(), &scale_transform);
88  ImpellerDisplayListBuilderDrawRect(builder.GetC(), &rect, paint.GetC());
89  auto dl = Adopt<DisplayList>(
91  ASSERT_TRUE(dl);
92  ASSERT_TRUE(
93  OpenPlaygroundHere([&](const auto& context, const auto& surface) -> bool {
94  ImpellerSurfaceDrawDisplayList(surface.GetC(), dl.GetC());
95  return true;
96  }));
97 }
IMPELLER_EXPORT void ImpellerDisplayListBuilderTranslate(ImpellerDisplayListBuilder IMPELLER_NONNULL builder, float x_translation, float y_translation)
Apply a translation to the transformation matrix currently on top of the save stack.
IMPELLER_EXPORT void ImpellerDisplayListBuilderTransform(ImpellerDisplayListBuilder IMPELLER_NONNULL builder, const ImpellerMatrix *IMPELLER_NONNULL transform)
Appends the the provided transformation to the transformation already on the save stack.
IMPELLER_EXPORT void ImpellerDisplayListBuilderDrawRect(ImpellerDisplayListBuilder IMPELLER_NONNULL builder, const ImpellerRect *IMPELLER_NONNULL rect, ImpellerPaint IMPELLER_NONNULL paint)
Draws a rectangle.

References impeller::interop::ImpellerDisplayListBuilderCreateDisplayListNew(), impeller::interop::ImpellerDisplayListBuilderDrawRect(), impeller::interop::ImpellerDisplayListBuilderNew(), impeller::interop::ImpellerDisplayListBuilderTransform(), impeller::interop::ImpellerDisplayListBuilderTranslate(), impeller::interop::ImpellerPaintNew(), impeller::interop::ImpellerPaintSetColor(), and impeller::interop::ImpellerSurfaceDrawDisplayList().

◆ TEST_P() [13/18]

impeller::interop::testing::TEST_P ( InteropPlaygroundTest  ,
CanGetPathBounds   
)

Definition at line 625 of file impeller_unittests.cc.

625  {
626  const auto path =
627  hpp::PathBuilder{}.MoveTo({100, 100}).LineTo({200, 200}).Build();
628  const auto bounds = path.GetBounds();
629  ASSERT_EQ(bounds.x, 100);
630  ASSERT_EQ(bounds.y, 100);
631  ASSERT_EQ(bounds.width, 100);
632  ASSERT_EQ(bounds.height, 100);
633 }
void LineTo(PathBuilder *builder, Scalar x, Scalar y)
Definition: tessellator.cc:24

References impeller::LineTo().

◆ TEST_P() [14/18]

impeller::interop::testing::TEST_P ( InteropPlaygroundTest  ,
CanMeasureText   
)

Definition at line 537 of file impeller_unittests.cc.

537  {
538  hpp::TypographyContext type_context;
539  hpp::ParagraphBuilder paragraph_builder(type_context);
540  hpp::ParagraphStyle paragraph_style;
541  paragraph_style.SetFontSize(50);
542  paragraph_builder.PushStyle(paragraph_style);
543  const std::string text =
544  "🏁 Can 👨‍👨‍👦‍👦 Measure 🔍 Text\nAnd this is line "
545  "two.\nWhoa! Three lines. How high does this go?\r\nI stopped counting.";
546  const auto u16text = fml::Utf8ToUtf16(text);
547  ASSERT_NE(text.size(), u16text.size());
548  paragraph_builder.AddText(reinterpret_cast<const uint8_t*>(text.data()),
549  text.size());
550  hpp::DisplayListBuilder builder;
551  // Don't rely on implicit line breaks in this test to make it less brittle to
552  // different fonts being picked.
553  hpp::Paragraph paragraph = paragraph_builder.Build(FLT_MAX);
554  const auto line_count = paragraph.GetLineCount();
555  ASSERT_EQ(line_count, 4u);
556 
557  // Line Metrics.
558  {
559  auto metrics = paragraph.GetLineMetrics();
560  ASSERT_GT(metrics.GetAscent(0), 0.0);
561  ASSERT_GT(metrics.GetUnscaledAscent(0), 0.0);
562  ASSERT_GT(metrics.GetDescent(0), 0.0);
563  ASSERT_GT(metrics.GetBaseline(0), 0.0);
564  ASSERT_TRUE(metrics.IsHardbreak(0));
565  ASSERT_DOUBLE_EQ(metrics.GetLeft(0), 0.0);
566  ASSERT_EQ(metrics.GetCodeUnitStartIndex(0), 0u);
567  ASSERT_EQ(metrics.GetCodeUnitEndIndexIncludingNewline(0),
568  metrics.GetCodeUnitEndIndex(0) + 1u);
569  ASSERT_GT(metrics.GetCodeUnitStartIndex(1), 0u);
570  // Last line should cover the entire range.
571  ASSERT_EQ(metrics.GetCodeUnitEndIndex(3), u16text.size());
572  }
573 
574  // Glyph info by code point.
575  {
576  auto glyph = paragraph.GlyphInfoAtCodeUnitIndex(0u);
577  ASSERT_TRUE(glyph);
578  ASSERT_EQ(glyph.GetGraphemeClusterCodeUnitRangeBegin(), 0u);
579  ASSERT_EQ(glyph.GetGraphemeClusterCodeUnitRangeEnd(),
580  fml::Utf8ToUtf16("🏁").size());
581  auto bounds = glyph.GetGraphemeClusterBounds();
582  ASSERT_GT(bounds.width, 0.0);
583  ASSERT_GT(bounds.height, 0.0);
584  ASSERT_FALSE(glyph.IsEllipsis());
585  ASSERT_EQ(glyph.GetTextDirection(), kImpellerTextDirectionLTR);
586 
587  ImpellerRect bounds2 = {};
588  ImpellerGlyphInfoGetGraphemeClusterBounds(glyph.Get(), &bounds2);
589  ASSERT_EQ(bounds.width, bounds2.width);
590  ASSERT_EQ(bounds.height, bounds2.height);
591  }
592 
593  // Glyph info by coordinates.
594  {
595  auto glyph = paragraph.GlyphInfoAtParagraphCoordinates(0.0, 0.0);
596  ASSERT_TRUE(glyph);
597  ASSERT_EQ(glyph.GetGraphemeClusterCodeUnitRangeEnd(),
598  fml::Utf8ToUtf16("🏁").size());
599  }
600 
601  // Glyph Figure out word boundaries.
602  {
603  auto glyph = paragraph.GlyphInfoAtCodeUnitIndex(0u);
604  ASSERT_TRUE(glyph);
605  auto range =
606  paragraph.GetWordBoundary(glyph.GetGraphemeClusterCodeUnitRangeEnd());
607  ASSERT_GT(range.end, 0u);
608  ImpellerRange range2 = {};
610  paragraph.Get(), glyph.GetGraphemeClusterCodeUnitRangeEnd(), &range2);
611  ASSERT_EQ(range.start, range2.start);
612  ASSERT_EQ(range.end, range2.end);
613  }
614 
615  builder.DrawParagraph(paragraph, ImpellerPoint{100, 100});
616  auto dl = builder.Build();
617  ASSERT_TRUE(
618  OpenPlaygroundHere([&](const auto& context, const auto& surface) -> bool {
619  hpp::Surface window(surface.GetC());
620  window.Draw(dl);
621  return true;
622  }));
623 }
IMPELLER_EXPORT void ImpellerParagraphGetWordBoundary(ImpellerParagraph IMPELLER_NONNULL paragraph, size_t code_unit_index, ImpellerRange *IMPELLER_NONNULL out_range)
Get the range into the UTF-16 code unit buffer that represents the word at the specified caret locati...
@ kImpellerTextDirectionLTR
Definition: impeller.h:481
IMPELLER_EXPORT void ImpellerGlyphInfoGetGraphemeClusterBounds(ImpellerGlyphInfo IMPELLER_NONNULL glyph_info, ImpellerRect *IMPELLER_NONNULL out_bounds)
Fetch the bounds of the grapheme cluster for the glyph in the coordinate space of the paragraph.
uint64_t end
Definition: impeller.h:526
uint64_t start
Definition: impeller.h:525
float height
Definition: impeller.h:506

References ImpellerRange::end, ImpellerRect::height, impeller::interop::ImpellerGlyphInfoGetGraphemeClusterBounds(), impeller::interop::ImpellerParagraphGetWordBoundary(), kImpellerTextDirectionLTR, ImpellerRange::start, and ImpellerRect::width.

◆ TEST_P() [15/18]

impeller::interop::testing::TEST_P ( InteropPlaygroundTest  ,
CanRenderShadows   
)

Definition at line 508 of file impeller_unittests.cc.

508  {
509  hpp::DisplayListBuilder builder;
510  {
511  builder.DrawRect(ImpellerRect{0, 0, 400, 400},
512  hpp::Paint{}.SetColor(ImpellerColor{
513  0.0, 1.0, 0.0, 1.0, kImpellerColorSpaceSRGB}));
514  }
515  ImpellerRect box = {100, 100, 100, 100};
516  {
517  hpp::PathBuilder path_builder;
518  path_builder.AddRect(box);
519  ImpellerColor shadow_color = {0.0, 0.0, 0.0, 1.0, kImpellerColorSpaceSRGB};
520  builder.DrawShadow(path_builder.Build(), shadow_color, 4.0f, false, 1.0f);
521  }
522  {
523  hpp::Paint red_paint;
524  red_paint.SetColor(
525  ImpellerColor{1.0, 0.0, 0.0, 1.0, kImpellerColorSpaceSRGB});
526  builder.DrawRect(box, red_paint);
527  }
528  auto dl = builder.Build();
529  ASSERT_TRUE(
530  OpenPlaygroundHere([&](const auto& context, const auto& surface) -> bool {
531  hpp::Surface window(surface.GetC());
532  window.Draw(dl);
533  return true;
534  }));
535 }
@ kImpellerColorSpaceSRGB
Definition: impeller.h:448

References kImpellerColorSpaceSRGB.

◆ TEST_P() [16/18]

impeller::interop::testing::TEST_P ( InteropPlaygroundTest  ,
CanRenderTextAlignments   
)

Definition at line 469 of file impeller_unittests.cc.

469  {
470  hpp::TypographyContext tc;
471 
472  hpp::DisplayListBuilder builder;
473  hpp::Paint bg;
474  hpp::ParagraphStyle p_style;
475  p_style.SetFontFamily("Roboto");
476  p_style.SetFontSize(24.0);
477  p_style.SetFontWeight(kImpellerFontWeight400);
478 
479  // Clear the background to a white color.
480  ImpellerColor clear_color = {1.0, 1.0, 1.0, 1.0};
481  bg.SetColor(clear_color);
482  builder.DrawPaint(bg);
483 
484  // Draw red, left-aligned text.
485  ImpellerColor red = {1.0, 0.0, 0.0, 1.0};
486  DrawTextFrame(tc, builder, p_style, bg, red, kImpellerTextAlignmentLeft, 0.0);
487 
488  // Draw green, centered text.
489  ImpellerColor green = {0.0, 1.0, 0.0, 1.0};
490  DrawTextFrame(tc, builder, p_style, bg, green, kImpellerTextAlignmentCenter,
491  220.0);
492 
493  // Draw blue, right-aligned text.
494  ImpellerColor blue = {0.0, 0.0, 1.0, 1.0};
495  DrawTextFrame(tc, builder, p_style, bg, blue, kImpellerTextAlignmentRight,
496  440.0);
497 
498  auto dl = builder.Build();
499 
500  ASSERT_TRUE(
501  OpenPlaygroundHere([&](const auto& context, const auto& surface) -> bool {
502  hpp::Surface window(surface.GetC());
503  window.Draw(dl);
504  return true;
505  }));
506 }
@ kImpellerFontWeight400
Definition: impeller.h:457
@ kImpellerTextAlignmentLeft
Definition: impeller.h:471
@ kImpellerTextAlignmentCenter
Definition: impeller.h:473
@ kImpellerTextAlignmentRight
Definition: impeller.h:472
static void DrawTextFrame(const hpp::TypographyContext &tc, hpp::DisplayListBuilder &builder, hpp::ParagraphStyle &p_style, const hpp::Paint &bg, ImpellerColor color, ImpellerTextAlignment align, float x_offset)

References DrawTextFrame(), kImpellerFontWeight400, kImpellerTextAlignmentCenter, kImpellerTextAlignmentLeft, and kImpellerTextAlignmentRight.

◆ TEST_P() [17/18]

impeller::interop::testing::TEST_P ( InteropPlaygroundTest  ,
ClearsOpenGLStancilStateAfterTransition   
)

Definition at line 203 of file impeller_unittests.cc.

203  {
204  auto context = GetInteropContext();
205  auto impeller_context = context->GetContext();
206  if (impeller_context->GetBackendType() !=
208  GTEST_SKIP() << "This test works with OpenGL handles is only suitable for "
209  "that backend.";
210  return;
211  }
212  const auto& gl_context = ContextGLES::Cast(*impeller_context);
213  const auto& gl = gl_context.GetReactor()->GetProcTable();
214  auto builder =
215  Adopt<DisplayListBuilder>(ImpellerDisplayListBuilderNew(nullptr));
216  auto paint = Adopt<Paint>(ImpellerPaintNew());
217  ImpellerColor color = {0.0, 0.0, 1.0, 1.0};
218  ImpellerPaintSetColor(paint.GetC(), &color);
219  ImpellerRect rect = {10, 20, 100, 200};
220  ImpellerDisplayListBuilderDrawRect(builder.GetC(), &rect, paint.GetC());
221  color = {1.0, 0.0, 0.0, 1.0};
222  ImpellerPaintSetColor(paint.GetC(), &color);
223  ImpellerDisplayListBuilderTranslate(builder.GetC(), 110, 210);
224  ImpellerDisplayListBuilderClipRect(builder.GetC(), &rect,
226  ImpellerDisplayListBuilderDrawRect(builder.GetC(), &rect, paint.GetC());
227  auto dl = Adopt<DisplayList>(
229  ASSERT_TRUE(dl);
230  ASSERT_TRUE(
231  OpenPlaygroundHere([&](const auto& context, const auto& surface) -> bool {
232  ImpellerSurfaceDrawDisplayList(surface.GetC(), dl.GetC());
233  // OpenGL state is reset even though the operations above enable a
234  // stencil check.
235  GLboolean stencil_enabled = true;
236  gl.GetBooleanv(GL_STENCIL_TEST, &stencil_enabled);
237  return stencil_enabled == GL_FALSE;
238  }));
239 }
IMPELLER_EXPORT void ImpellerDisplayListBuilderClipRect(ImpellerDisplayListBuilder IMPELLER_NONNULL builder, const ImpellerRect *IMPELLER_NONNULL rect, ImpellerClipOperation op)
Reduces the clip region to the intersection of the current clip and the given rectangle taking into a...
@ kImpellerClipOperationDifference
Definition: impeller.h:370

References impeller::BackendCast< ContextGLES, Context >::Cast(), impeller::interop::ImpellerDisplayListBuilderClipRect(), impeller::interop::ImpellerDisplayListBuilderCreateDisplayListNew(), impeller::interop::ImpellerDisplayListBuilderDrawRect(), impeller::interop::ImpellerDisplayListBuilderNew(), impeller::interop::ImpellerDisplayListBuilderTranslate(), impeller::interop::ImpellerPaintNew(), impeller::interop::ImpellerPaintSetColor(), impeller::interop::ImpellerSurfaceDrawDisplayList(), kImpellerClipOperationDifference, and impeller::Context::kOpenGLES.

◆ TEST_P() [18/18]

impeller::interop::testing::TEST_P ( InteropPlaygroundTest  ,
MappingsReleaseTheirDataOnDestruction   
)

Definition at line 695 of file impeller_unittests.cc.

695  {
696  bool deleted = false;
697  {
698  hpp::Mapping mapping(nullptr, 0, [&deleted]() { deleted = true; });
699  }
700  ASSERT_TRUE(deleted);
701 }