test filling: add fill/linear/radial gradients.

test/meson.build

@@ -1,6 +1,7 @@
 test_file = [
-    'testMain.cpp',
+    'testFill.cpp',
     'testInitializer.cpp',
+    'testMain.cpp',
     'testPicture.cpp',
     'testScene.cpp',
     'testShape.cpp',

test/testFill.cpp

@@ -0,0 +1,165 @@
+/*
+ * Copyright (c) 2021 Samsung Electronics Co., Ltd. All rights reserved.
+
+ * 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 <thorvg.h>
+#include <memory>
+#include "catch.hpp"
+
+using namespace tvg;
+using namespace std;
+
+TEST_CASE("Common Filling", "[tvgFill]")
+{
+    auto fill = LinearGradient::gen();
+    REQUIRE(fill);
+
+    //Options
+    REQUIRE(fill->spread() == FillSpread::Pad);
+    REQUIRE(fill->spread(FillSpread::Pad) == Result::Success);
+    REQUIRE(fill->spread(FillSpread::Reflect) == Result::Success);
+    REQUIRE(fill->spread(FillSpread::Repeat) == Result::Success);
+    REQUIRE(fill->spread() == FillSpread::Repeat);
+
+    //ColorStops
+    const Fill::ColorStop* cs = nullptr;
+    REQUIRE(fill->colorStops(nullptr) == 0);
+    REQUIRE(fill->colorStops(&cs) == 0);
+    REQUIRE(cs == nullptr);
+
+    Fill::ColorStop cs2[4] = {
+        {0.0f, 0, 0, 0, 0},
+        {0.2f, 50, 25, 50, 25},
+        {0.5f, 100, 100, 100, 125},
+        {1.0f, 255, 255, 255, 255}
+    };
+
+    REQUIRE(fill->colorStops(nullptr, 4) == Result::InvalidArguments);
+    REQUIRE(fill->colorStops(cs2, 0) == Result::InvalidArguments);    
+    REQUIRE(fill->colorStops(cs2, 4) == Result::Success);
+    REQUIRE(fill->colorStops(&cs) == 4);
+
+    for (int i = 0; i < 4; ++i) {
+        REQUIRE(cs[i].offset == cs2[i].offset);
+        REQUIRE(cs[i].r == cs2[i].r);
+        REQUIRE(cs[i].g == cs2[i].g);
+        REQUIRE(cs[i].b == cs2[i].b);
+    };
+
+    //Reset ColorStop
+    REQUIRE(fill->colorStops(nullptr, 0) == Result::Success);
+    REQUIRE(fill->colorStops(&cs) == 0);
+
+    //Set to Shape
+    auto shape = Shape::gen();
+    REQUIRE(shape);
+
+    auto pFill = fill.get();
+    REQUIRE(shape->fill(move(fill)) == Result::Success);
+    REQUIRE(shape->fill() == pFill);
+}
+
+TEST_CASE("Linear Filling", "[tvgFill]")
+{
+    auto fill = LinearGradient::gen();
+    REQUIRE(fill);
+
+    float x1, y1, x2, y2;
+
+    REQUIRE(fill->linear(nullptr, nullptr, nullptr, nullptr) == Result::Success);
+    REQUIRE(fill->linear(0, 0, 0, 0) == Result::Success);
+
+    REQUIRE(fill->linear(&x1, nullptr, &x2, nullptr) == Result::Success);
+    REQUIRE(x1 == 0.0f);
+    REQUIRE(x2 == 0.0f);
+
+    REQUIRE(fill->linear(-1.0f, -1.0f, 100.0f, 100.0f) == Result::Success);
+    REQUIRE(fill->linear(&x1, &y1, &x2, &y2) == Result::Success);
+    REQUIRE(x1 == -1.0f);
+    REQUIRE(y1 == -1.0f);
+    REQUIRE(x2 == 100.0f);
+    REQUIRE(y2 == 100.0f);
+}
+
+TEST_CASE("Radial Filling", "[tvgFill]")
+{
+    auto fill = RadialGradient::gen();
+    REQUIRE(fill);
+
+    float cx, cy, radius;
+
+    REQUIRE(fill->radial(0, 0, -1) == Result::InvalidArguments);
+    REQUIRE(fill->radial(nullptr, nullptr, nullptr) == Result::Success);    
+    REQUIRE(fill->radial(100, 120, 50) == Result::Success);
+
+    REQUIRE(fill->radial(&cx, nullptr, &radius) == Result::Success);
+    REQUIRE(cx == 100.0f);
+    REQUIRE(radius == 50.0f);
+
+    REQUIRE(fill->radial(nullptr, &cy, nullptr) == Result::Success);
+    REQUIRE(cy == 120);
+
+    REQUIRE(fill->radial(0, 0, 0) == Result::Success);
+    REQUIRE(fill->radial(&cx, &cy, &radius) == Result::Success);
+    REQUIRE(cx == 0.0f);
+    REQUIRE(cy == 0.0f);
+    REQUIRE(radius == 0.0f);
+}
+
+TEST_CASE("Filling Dupliction", "[tvgFill]")
+{
+    auto fill = RadialGradient::gen();
+    REQUIRE(fill);
+
+    //Setup
+    Fill::ColorStop cs[4] = {
+        {0.0f, 0, 0, 0, 0},
+        {0.2f, 50, 25, 50, 25},
+        {0.5f, 100, 100, 100, 125},
+        {1.0f, 255, 255, 255, 255}
+    };
+
+    REQUIRE(fill->colorStops(cs, 4) == Result::Success);
+    REQUIRE(fill->spread(FillSpread::Reflect) == Result::Success);
+    REQUIRE(fill->radial(100.0f, 120.0f, 50.0f) == Result::Success);
+
+    //Duplication
+    auto dup = unique_ptr<RadialGradient>(static_cast<RadialGradient*>(fill->duplicate()));
+    REQUIRE(dup);
+
+    REQUIRE(dup->spread() == FillSpread::Reflect);
+
+    float cx, cy, radius;
+    REQUIRE(dup->radial(&cx, &cy, &radius) == Result::Success);
+    REQUIRE(cx == 100.0f);
+    REQUIRE(cy == 120.0f);
+    REQUIRE(radius == 50.0f);
+
+    const Fill::ColorStop* cs2 = nullptr;
+    REQUIRE(fill->colorStops(&cs2) == 4);
+
+    for (int i = 0; i < 4; ++i) {
+        REQUIRE(cs[i].offset == cs2[i].offset);
+        REQUIRE(cs[i].r == cs2[i].r);
+        REQUIRE(cs[i].g == cs2[i].g);
+        REQUIRE(cs[i].b == cs2[i].b);
+    };
+}