RmlUi/Tests/Source/UnitTests/Properties.cpp

/*
 * This source file is part of RmlUi, the HTML/CSS Interface Middleware
 *
 * For the latest information, see http://github.com/mikke89/RmlUi
 *
 * Copyright (c) 2008-2010 CodePoint Ltd, Shift Technology Ltd
 * Copyright (c) 2019-2023 The RmlUi Team, and contributors
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 *
 */

#include "../Common/TestsInterface.h"
#include <RmlUi/Core/Context.h>
#include <RmlUi/Core/Core.h>
#include <RmlUi/Core/DecorationTypes.h>
#include <RmlUi/Core/Element.h>
#include <RmlUi/Core/ElementDocument.h>
#include <RmlUi/Core/StyleSheetTypes.h>
#include <doctest.h>

using namespace Rml;

TEST_CASE("Properties")
{
	const Vector2i window_size(1024, 768);

	TestsSystemInterface system_interface;
	TestsRenderInterface render_interface;

	SetRenderInterface(&render_interface);
	SetSystemInterface(&system_interface);

	Rml::Initialise();

	Context* context = Rml::CreateContext("main", window_size);
	ElementDocument* document = context->CreateDocument();

	SUBCASE("flex")
	{
		struct FlexTestCase {
			String flex_value;

			struct ExpectedValues {
				float flex_grow;
				float flex_shrink;
				String flex_basis;
			} expected;
		};

		FlexTestCase tests[] = {
			{"", {0.f, 1.f, "auto"}},
			{"none", {0.f, 0.f, "auto"}},
			{"auto", {1.f, 1.f, "auto"}},
			{"1", {1.f, 1.f, "0px"}},
			{"2", {2.f, 1.f, "0px"}},
			{"2 0", {2.f, 0.f, "0px"}},
			{"2 3", {2.f, 3.f, "0px"}},
			{"2 auto", {2.f, 1.f, "auto"}},
			{"2 0 auto", {2.f, 0.f, "auto"}},
			{"0 0 auto", {0.f, 0.f, "auto"}},
			{"0 0 50px", {0.f, 0.f, "50px"}},
			{"0 0 50px", {0.f, 0.f, "50px"}},
			{"0 0 0", {0.f, 0.f, "0px"}},
		};

		for (const FlexTestCase& test : tests)
		{
			if (!test.flex_value.empty())
			{
				CHECK(document->SetProperty("flex", test.flex_value));
			}

			CHECK(document->GetProperty<float>("flex-grow") == test.expected.flex_grow);
			CHECK(document->GetProperty<float>("flex-shrink") == test.expected.flex_shrink);
			CHECK(document->GetProperty("flex-basis")->ToString() == test.expected.flex_basis);
		}
	}

	SUBCASE("gradient")
	{
		auto ParseGradient = [&](const String& value) -> ColorStopList {
			document->SetProperty("decorator", "linear-gradient(" + value + ")");
			auto decorators = document->GetProperty<DecoratorsPtr>("decorator");
			if (!decorators || decorators->list.size() != 1)
				return {};
			for (auto& id_property : decorators->list.front().properties.GetProperties())
			{
				if (id_property.second.unit == Unit::COLORSTOPLIST)
					return id_property.second.Get<ColorStopList>();
			}
			return {};
		};

		struct GradientTestCase {
			String value;
			ColorStopList expected_color_stops;
		};

		GradientTestCase test_cases[] = {
			{
				"red, blue",
				{
					ColorStop{Colourb(255, 0, 0), NumericValue{}},
					ColorStop{Colourb(0, 0, 255), NumericValue{}},
				},
			},
			{
				"red 5px, blue 50%",
				{
					ColorStop{Colourb(255, 0, 0), NumericValue{5.f, Unit::PX}},
					ColorStop{Colourb(0, 0, 255), NumericValue{50.f, Unit::PERCENT}},
				},
			},
			{
				"red, #00f 50%, rgba(0, 255,0, 150) 10dp",
				{
					ColorStop{Colourb(255, 0, 0), NumericValue{}},
					ColorStop{Colourb(0, 0, 255), NumericValue{50.f, Unit::PERCENT}},
					ColorStop{Colourb(0, 255, 0, 150), NumericValue{10.f, Unit::DP}},
				},
			},
			{
				"red 50px 20%, blue 10in",
				{
					ColorStop{Colourb(255, 0, 0), NumericValue{50.f, Unit::PX}},
					ColorStop{Colourb(255, 0, 0), NumericValue{20.f, Unit::PERCENT}},
					ColorStop{Colourb(0, 0, 255), NumericValue{10.f, Unit::INCH}},
				},
			},
		};

		for (const GradientTestCase& test_case : test_cases)
		{
			const ColorStopList result = ParseGradient(test_case.value);
			CHECK(result == test_case.expected_color_stops);
		}
	}

	Rml::Shutdown();
}