ThorVG: update to v0.11.0 release.

See https://github.com/thorvg/thorvg/releases/tag/v0.11.0

+ Infrastructure
    Repository folder structure was make it more intuitive and coherent.
        "thorvg/src/lib" -> "thorvg/src/common"
            (providing essential common functionalities
                used internally among the renderer and sub-modules)
        "thorvg/src/lib" -> "thorvg/src/renderer"
            (for vector drawing features)

+ SVG related
    Fix stroke regression https://github.com/thorvg/thorvg/issues/1670
    Support stroke dash offset function https://github.com/thorvg/thorvg/issues/1591#issuecomment-1681319321
    Support Focal property in Radial Gradient https://github.com/thorvg/thorvg/issues/1558

1 files changed, 112 insertions, 0 deletions

diff --git a/thirdparty/thorvg/src/renderer/tvgFill.h b/thirdparty/thorvg/src/renderer/tvgFill.h
new file mode 100644
index 0000000000..ff3dd48c49
--- /dev/null
+++ b/thirdparty/thorvg/src/renderer/tvgFill.h
@@ -0,0 +1,112 @@
+/*
+ * Copyright (c) 2020 - 2023 the ThorVG project. 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.
+ */
+
+#ifndef _TVG_FILL_H_
+#define _TVG_FILL_H_
+
+#include <cstdlib>
+#include <cstring>
+#include "tvgCommon.h"
+
+template<typename T>
+struct DuplicateMethod
+{
+    virtual ~DuplicateMethod() {}
+    virtual T* duplicate() = 0;
+};
+
+template<class T>
+struct FillDup : DuplicateMethod<Fill>
+{
+    T* inst = nullptr;
+
+    FillDup(T* _inst) : inst(_inst) {}
+    ~FillDup() {}
+
+    Fill* duplicate() override
+    {
+        return inst->duplicate();
+    }
+};
+
+struct Fill::Impl
+{
+    ColorStop* colorStops = nullptr;
+    Matrix* transform = nullptr;
+    uint32_t cnt = 0;
+    FillSpread spread;
+    DuplicateMethod<Fill>* dup = nullptr;
+    uint8_t id;
+
+    ~Impl()
+    {
+        delete(dup);
+        free(colorStops);
+        free(transform);
+    }
+
+    void method(DuplicateMethod<Fill>* dup)
+    {
+        this->dup = dup;
+    }
+
+    Fill* duplicate()
+    {
+        auto ret = dup->duplicate();
+        if (!ret) return nullptr;
+
+        ret->pImpl->cnt = cnt;
+        ret->pImpl->spread = spread;
+        ret->pImpl->colorStops = static_cast<ColorStop*>(malloc(sizeof(ColorStop) * cnt));
+        memcpy(ret->pImpl->colorStops, colorStops, sizeof(ColorStop) * cnt);
+        if (transform) {
+            ret->pImpl->transform = static_cast<Matrix*>(malloc(sizeof(Matrix)));
+            *ret->pImpl->transform = *transform;
+        }
+        return ret;
+    }
+};
+
+
+struct RadialGradient::Impl
+{
+    float cx = 0.0f, cy = 0.0f;
+    float fx = 0.0f, fy = 0.0f;
+    float r = 0.0f, fr = 0.0f;
+
+    Fill* duplicate();
+    Result radial(float cx, float cy, float r, float fx, float fy, float fr);
+};
+
+
+struct LinearGradient::Impl
+{
+    float x1 = 0.0f;
+    float y1 = 0.0f;
+    float x2 = 0.0f;
+    float y2 = 0.0f;
+
+    Fill* duplicate();
+};
+
+
+#endif  //_TVG_FILL_H_