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@@ -828,3 +828,116 @@ TEST_CASE("animation.multiple_overlapping")
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system_interface->SetTime(0.0);
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TestsShell::ShutdownShell();
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}
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+
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+TEST_CASE("transition.display_and_visibility")
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+{
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+ // Display and visibility properties have special behavior that make them visible throughout the interpolation duration.
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+ const String document_rml_template = R"(
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+<rml>
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+<head>
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+ <title>Test</title>
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+ <link type="text/rcss" href="/assets/rml.rcss"/>
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+ <style>
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+ body {
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+ inset: 0;
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+ }
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+ div {
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+ background-color: #c66;
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+ width: 300dp;
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+ height: 300dp;
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+ margin: auto;
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+ transition: opacity display visibility 1s;
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+ }
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+ .hide {
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+ %s;
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+ opacity: 0;
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+ }
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+ </style>
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+</head>
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+
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+<body>
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+ <div class="hide" id="div"/>
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+</body>
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+</rml>
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+)";
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+
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+ TestsSystemInterface* system_interface = TestsShell::GetTestsSystemInterface();
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+ Context* context = TestsShell::GetContext();
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+
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+ String document_rml;
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+
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+ SUBCASE("display: none")
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+ {
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+ document_rml = CreateString(document_rml_template.c_str(), "display: none");
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+ }
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+ SUBCASE("visibility")
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+ {
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+ document_rml = CreateString(document_rml_template.c_str(), "visibility: hidden");
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+ }
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+
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+ const double dt = 1.0 / 60.0;
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+ const double t_delta = 0.1;
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+ const double t_fadein0 = 1;
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+ const double t_fadein1 = 2;
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+ const double t_fadeout0 = 4;
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+ const double t_fadeout1 = 5;
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+
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+ enum class Action { None, Show, Hide };
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+
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+ struct TestCase {
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+ double time;
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+ float opacity;
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+ bool is_visible;
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+ Action action = Action::None;
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+ };
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+ const std::vector<TestCase> tests = {
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+ {t_fadein0 - t_delta, 0.f, false},
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+ {t_fadein0, 0.f, false, Action::Show},
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+ {t_fadein0 + t_delta, 0.1f, true},
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+ {t_fadein1 - t_delta, 0.9f, true},
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+ {t_fadein1, 1.f, true},
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+ {t_fadein1 + t_delta, 1.f, true},
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+ {t_fadeout0 - t_delta, 1.f, true},
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+ {t_fadeout0, 1.f, true, Action::Hide},
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+ {t_fadeout0 + t_delta, 0.9f, true},
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+ {t_fadeout1 - t_delta, 0.1f, true},
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+ {t_fadeout1 + dt, 0.f, false}, // Due to floating-point precision, the animation may end slightly after the exact endtime.
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+ {t_fadeout1 + t_delta, 0.f, false},
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+ };
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+
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+ {
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+ system_interface->SetTime(0.0);
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+
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+ ElementDocument* document = context->LoadDocumentFromMemory(document_rml, "assets/");
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+ Element* element = document->GetChild(0);
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+
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+ document->Show();
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+
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+ double t = 0.f;
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+ for (const auto& test : tests)
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+ {
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+ while (t < test.time)
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+ {
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+ t = Math::Min(t + dt, test.time);
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+ system_interface->SetTime(t);
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+ TestsShell::RenderLoop(false);
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+ }
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+
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+ if (test.action == Action::Show)
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+ element->SetClass("hide", false);
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+ else if (test.action == Action::Hide)
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+ element->SetClass("hide", true);
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+
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+ context->Update();
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+
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+ INFO("Time: ", test.time);
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+ CHECK(element->GetProperty<float>("opacity") == doctest::Approx(test.opacity));
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+ CHECK(element->IsVisible() == test.is_visible);
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+ }
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+
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+ document->Close();
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+ }
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+
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+ system_interface->SetTime(0.0);
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+ TestsShell::ShutdownShell();
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+}
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Michael Ragazzon