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, 216 insertions, 0 deletions

diff --git a/thirdparty/thorvg/src/renderer/tvgPaint.h b/thirdparty/thorvg/src/renderer/tvgPaint.h
new file mode 100644
index 0000000000..0ee07fedff
--- /dev/null
+++ b/thirdparty/thorvg/src/renderer/tvgPaint.h
@@ -0,0 +1,216 @@
+/*
+ * 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_PAINT_H_
+#define _TVG_PAINT_H_
+
+#include "tvgRender.h"
+#include "tvgMath.h"
+
+namespace tvg
+{
+    enum ContextFlag : uint8_t {Invalid = 0, FastTrack = 1};
+
+    struct Iterator
+    {
+        virtual ~Iterator() {}
+        virtual const Paint* next() = 0;
+        virtual uint32_t count() = 0;
+        virtual void begin() = 0;
+    };
+
+    struct StrategyMethod
+    {
+        virtual ~StrategyMethod() {}
+
+        virtual bool dispose(RenderMethod& renderer) = 0;     //return true if the deletion is allowed.
+        virtual void* update(RenderMethod& renderer, const RenderTransform* transform, Array<RenderData>& clips, uint8_t opacity, RenderUpdateFlag pFlag, bool clipper) = 0;   //Return engine data if it has.
+        virtual bool render(RenderMethod& renderer) = 0;
+        virtual bool bounds(float* x, float* y, float* w, float* h, bool stroking) = 0;
+        virtual RenderRegion bounds(RenderMethod& renderer) const = 0;
+        virtual Paint* duplicate() = 0;
+        virtual Iterator* iterator() = 0;
+    };
+
+    struct Composite
+    {
+        Paint* target;
+        Paint* source;
+        CompositeMethod method;
+    };
+
+    struct Paint::Impl
+    {
+        StrategyMethod* smethod = nullptr;
+        RenderTransform* rTransform = nullptr;
+        Composite* compData = nullptr;
+        BlendMethod blendMethod = BlendMethod::Normal;              //uint8_t
+        uint8_t renderFlag = RenderUpdateFlag::None;
+        uint8_t ctxFlag = ContextFlag::Invalid;
+        uint8_t id;
+        uint8_t opacity = 255;
+        uint8_t refCnt = 0;
+
+        ~Impl()
+        {
+            if (compData) {
+                delete(compData->target);
+                free(compData);
+            }
+            delete(smethod);
+            delete(rTransform);
+        }
+
+        uint8_t ref()
+        {
+            if (refCnt == 255) TVGERR("RENDERER", "Corrupted reference count!");
+            return (++refCnt);
+        }
+
+        uint8_t unref()
+        {
+            if (refCnt == 0) TVGERR("RENDERER", "Corrupted reference count!");
+            return (--refCnt);
+        }
+
+        void method(StrategyMethod* method)
+        {
+            smethod = method;
+        }
+
+        bool transform(const Matrix& m)
+        {
+            if (!rTransform) {
+                if (mathIdentity(&m)) return true;
+                rTransform = new RenderTransform();
+                if (!rTransform) return false;
+            }
+            rTransform->override(m);
+            renderFlag |= RenderUpdateFlag::Transform;
+
+            return true;
+        }
+
+        Matrix* transform()
+        {
+            if (rTransform) {
+                rTransform->update();
+                return &rTransform->m;
+            }
+            return nullptr;
+        }
+
+        RenderRegion bounds(RenderMethod& renderer) const
+        {
+            return smethod->bounds(renderer);
+        }
+
+        bool dispose(RenderMethod& renderer)
+        {
+            if (compData) compData->target->pImpl->dispose(renderer);
+            return smethod->dispose(renderer);
+        }
+
+        Iterator* iterator()
+        {
+            return smethod->iterator();
+        }
+
+        bool composite(Paint* source, Paint* target, CompositeMethod method)
+        {
+            //Invalid case
+            if ((!target && method != CompositeMethod::None) || (target && method == CompositeMethod::None)) return false;
+
+            if (compData) {
+                delete(compData->target);
+                //Reset scenario
+                if (!target && method == CompositeMethod::None) {
+                    free(compData);
+                    compData = nullptr;
+                    return true;
+                }
+            } else {
+                if (!target && method == CompositeMethod::None) return true;
+                compData = static_cast<Composite*>(calloc(1, sizeof(Composite)));
+            }
+            compData->target = target;
+            compData->source = source;
+            compData->method = method;
+            return true;
+        }
+
+        bool rotate(float degree);
+        bool scale(float factor);
+        bool translate(float x, float y);
+        bool bounds(float* x, float* y, float* w, float* h, bool transformed, bool stroking);
+        RenderData update(RenderMethod& renderer, const RenderTransform* pTransform, Array<RenderData>& clips, uint8_t opacity, RenderUpdateFlag pFlag, bool clipper = false);
+        bool render(RenderMethod& renderer);
+        Paint* duplicate();
+    };
+
+
+    template<class T>
+    struct PaintMethod : StrategyMethod
+    {
+        T* inst = nullptr;
+
+        PaintMethod(T* _inst) : inst(_inst) {}
+        ~PaintMethod() {}
+
+        bool bounds(float* x, float* y, float* w, float* h, bool stroking) override
+        {
+            return inst->bounds(x, y, w, h, stroking);
+        }
+
+        RenderRegion bounds(RenderMethod& renderer) const override
+        {
+            return inst->bounds(renderer);
+        }
+
+        bool dispose(RenderMethod& renderer) override
+        {
+            return inst->dispose(renderer);
+        }
+
+        RenderData update(RenderMethod& renderer, const RenderTransform* transform, Array<RenderData>& clips, uint8_t opacity, RenderUpdateFlag renderFlag, bool clipper) override
+        {
+            return inst->update(renderer, transform, clips, opacity, renderFlag, clipper);
+        }
+
+        bool render(RenderMethod& renderer) override
+        {
+            return inst->render(renderer);
+        }
+
+        Paint* duplicate() override
+        {
+            return inst->duplicate();
+        }
+
+        Iterator* iterator() override
+        {
+            return inst->iterator();
+        }
+    };
+}
+
+#endif //_TVG_PAINT_H_