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, 311 insertions, 0 deletions

diff --git a/thirdparty/thorvg/src/renderer/tvgPicture.h b/thirdparty/thorvg/src/renderer/tvgPicture.h
new file mode 100644
index 0000000000..447f56ecb7
--- /dev/null
+++ b/thirdparty/thorvg/src/renderer/tvgPicture.h
@@ -0,0 +1,311 @@
+/*
+ * 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_PICTURE_IMPL_H_
+#define _TVG_PICTURE_IMPL_H_
+
+#include <string>
+#include "tvgPaint.h"
+#include "tvgLoader.h"
+
+/************************************************************************/
+/* Internal Class Implementation                                        */
+/************************************************************************/
+
+struct PictureIterator : Iterator
+{
+    Paint* paint = nullptr;
+    Paint* ptr = nullptr;
+
+    PictureIterator(Paint* p) : paint(p) {}
+
+    const Paint* next() override
+    {
+        if (!ptr) ptr = paint;
+        else ptr = nullptr;
+        return ptr;
+    }
+
+    uint32_t count() override
+    {
+        if (paint) return 1;
+        else return 0;
+    }
+
+    void begin() override
+    {
+        ptr = nullptr;
+    }
+};
+
+
+struct Picture::Impl
+{
+    shared_ptr<LoadModule> loader = nullptr;
+
+    Paint* paint = nullptr;           //vector picture uses
+    Surface* surface = nullptr;       //bitmap picture uses
+    RenderData rd = nullptr;          //engine data
+    float w = 0, h = 0;
+    RenderMesh rm;                    //mesh data
+    Picture* picture = nullptr;
+    bool resizing = false;
+    bool needComp = false;            //need composition
+
+    Impl(Picture* p) : picture(p)
+    {
+    }
+
+    ~Impl()
+    {
+        delete(paint);
+        delete(surface);
+    }
+
+    bool dispose(RenderMethod& renderer)
+    {
+        if (paint) paint->pImpl->dispose(renderer);
+        else if (surface) renderer.dispose(rd);
+        rd = nullptr;
+        return true;
+    }
+
+    RenderTransform resizeTransform(const RenderTransform* pTransform)
+    {
+        //Overriding Transformation by the desired image size
+        auto sx = w / loader->w;
+        auto sy = h / loader->h;
+        auto scale = sx < sy ? sx : sy;
+
+        RenderTransform tmp;
+        tmp.m = {scale, 0, 0, 0, scale, 0, 0, 0, 1};
+
+        if (!pTransform) return tmp;
+        else return RenderTransform(pTransform, &tmp);
+    }
+
+    bool needComposition(uint8_t opacity)
+    {
+        //In this case, paint(scene) would try composition itself.
+        if (opacity < 255) return false;
+
+        //Composition test
+        const Paint* target;
+        auto method = picture->composite(&target);
+        if (!target || method == tvg::CompositeMethod::ClipPath) return false;
+        if (target->pImpl->opacity == 255 || target->pImpl->opacity == 0) return false;
+
+        return true;
+    }
+
+    RenderData update(RenderMethod &renderer, const RenderTransform* pTransform, Array<RenderData>& clips, uint8_t opacity, RenderUpdateFlag pFlag, bool clipper)
+    {
+        auto flag = load();
+
+        if (surface) {
+            auto transform = resizeTransform(pTransform);
+            rd = renderer.prepare(surface, &rm, rd, &transform, clips, opacity, static_cast<RenderUpdateFlag>(pFlag | flag));
+        } else if (paint) {
+            if (resizing) {
+                loader->resize(paint, w, h);
+                resizing = false;
+            }
+            needComp = needComposition(opacity) ? true : false;
+            rd = paint->pImpl->update(renderer, pTransform, clips, opacity, static_cast<RenderUpdateFlag>(pFlag | flag), clipper);
+        }
+        return rd;
+    }
+
+    bool render(RenderMethod &renderer)
+    {
+        bool ret = false;
+        if (surface) return renderer.renderImage(rd);
+        else if (paint) {
+            Compositor* cmp = nullptr;
+            if (needComp) {
+                cmp = renderer.target(bounds(renderer), renderer.colorSpace());
+                renderer.beginComposite(cmp, CompositeMethod::None, 255);
+            }
+            ret = paint->pImpl->render(renderer);
+            if (cmp) renderer.endComposite(cmp);
+        }
+        return ret;
+    }
+
+    bool size(float w, float h)
+    {
+        this->w = w;
+        this->h = h;
+        resizing = true;
+        return true;
+    }
+
+    bool bounds(float* x, float* y, float* w, float* h, bool stroking)
+    {
+        if (rm.triangleCnt > 0) {
+            auto triangles = rm.triangles;
+            auto min = triangles[0].vertex[0].pt;
+            auto max = triangles[0].vertex[0].pt;
+
+            for (uint32_t i = 0; i < rm.triangleCnt; ++i) {
+                if (triangles[i].vertex[0].pt.x < min.x) min.x = triangles[i].vertex[0].pt.x;
+                else if (triangles[i].vertex[0].pt.x > max.x) max.x = triangles[i].vertex[0].pt.x;
+                if (triangles[i].vertex[0].pt.y < min.y) min.y = triangles[i].vertex[0].pt.y;
+                else if (triangles[i].vertex[0].pt.y > max.y) max.y = triangles[i].vertex[0].pt.y;
+
+                if (triangles[i].vertex[1].pt.x < min.x) min.x = triangles[i].vertex[1].pt.x;
+                else if (triangles[i].vertex[1].pt.x > max.x) max.x = triangles[i].vertex[1].pt.x;
+                if (triangles[i].vertex[1].pt.y < min.y) min.y = triangles[i].vertex[1].pt.y;
+                else if (triangles[i].vertex[1].pt.y > max.y) max.y = triangles[i].vertex[1].pt.y;
+
+                if (triangles[i].vertex[2].pt.x < min.x) min.x = triangles[i].vertex[2].pt.x;
+                else if (triangles[i].vertex[2].pt.x > max.x) max.x = triangles[i].vertex[2].pt.x;
+                if (triangles[i].vertex[2].pt.y < min.y) min.y = triangles[i].vertex[2].pt.y;
+                else if (triangles[i].vertex[2].pt.y > max.y) max.y = triangles[i].vertex[2].pt.y;
+            }
+            if (x) *x = min.x;
+            if (y) *y = min.y;
+            if (w) *w = max.x - min.x;
+            if (h) *h = max.y - min.y;
+        } else {
+            if (x) *x = 0;
+            if (y) *y = 0;
+            if (w) *w = this->w;
+            if (h) *h = this->h;
+        }
+        return true;
+    }
+
+    RenderRegion bounds(RenderMethod& renderer)
+    {
+        if (rd) return renderer.region(rd);
+        if (paint) return paint->pImpl->bounds(renderer);
+        return {0, 0, 0, 0};
+    }
+
+    Result load(const string& path)
+    {
+        if (paint || surface) return Result::InsufficientCondition;
+        if (loader) loader->close();
+        bool invalid;  //Invalid Path
+        loader = LoaderMgr::loader(path, &invalid);
+        if (!loader) {
+            if (invalid) return Result::InvalidArguments;
+            return Result::NonSupport;
+        }
+        if (!loader->read()) return Result::Unknown;
+        w = loader->w;
+        h = loader->h;
+        return Result::Success;
+    }
+
+    Result load(const char* data, uint32_t size, const string& mimeType, bool copy)
+    {
+        if (paint || surface) return Result::InsufficientCondition;
+        if (loader) loader->close();
+        loader = LoaderMgr::loader(data, size, mimeType, copy);
+        if (!loader) return Result::NonSupport;
+        if (!loader->read()) return Result::Unknown;
+        w = loader->w;
+        h = loader->h;
+        return Result::Success;
+    }
+
+    Result load(uint32_t* data, uint32_t w, uint32_t h, bool copy)
+    {
+        if (paint || surface) return Result::InsufficientCondition;
+        if (loader) loader->close();
+        loader = LoaderMgr::loader(data, w, h, copy);
+        if (!loader) return Result::FailedAllocation;
+        this->w = loader->w;
+        this->h = loader->h;
+        return Result::Success;
+    }
+
+    void mesh(const Polygon* triangles, const uint32_t triangleCnt)
+    {
+        if (triangles && triangleCnt > 0) {
+            this->rm.triangleCnt = triangleCnt;
+            this->rm.triangles = (Polygon*)malloc(sizeof(Polygon) * triangleCnt);
+            memcpy(this->rm.triangles, triangles, sizeof(Polygon) * triangleCnt);
+        } else {
+            free(this->rm.triangles);
+            this->rm.triangles = nullptr;
+            this->rm.triangleCnt = 0;
+        }
+    }
+
+    Paint* duplicate()
+    {
+        load();
+
+        auto ret = Picture::gen();
+
+        auto dup = ret.get()->pImpl;
+        if (paint) dup->paint = paint->duplicate();
+
+        dup->loader = loader;
+        if (surface) {
+            dup->surface = new Surface;
+            *dup->surface = *surface;
+            //TODO: A dupilcation is not a proxy... it needs copy of the pixel data?
+            dup->surface->owner = false;
+        }
+        dup->w = w;
+        dup->h = h;
+        dup->resizing = resizing;
+
+        if (rm.triangleCnt > 0) {
+            dup->rm.triangleCnt = rm.triangleCnt;
+            dup->rm.triangles = (Polygon*)malloc(sizeof(Polygon) * rm.triangleCnt);
+            memcpy(dup->rm.triangles, rm.triangles, sizeof(Polygon) * rm.triangleCnt);
+        }
+
+        return ret.release();
+    }
+
+    Iterator* iterator()
+    {
+        load();
+        return new PictureIterator(paint);
+    }
+
+    uint32_t* data(uint32_t* w, uint32_t* h)
+    {
+        //Try it, If not loaded yet.
+        load();
+
+        if (loader) {
+            if (w) *w = static_cast<uint32_t>(loader->w);
+            if (h) *h = static_cast<uint32_t>(loader->h);
+        } else {
+            if (w) *w = 0;
+            if (h) *h = 0;
+        }
+        if (surface) return surface->buf32;
+        else return nullptr;
+    }
+
+    RenderUpdateFlag load();
+};
+
+#endif //_TVG_PICTURE_IMPL_H_