thorvg: Update to 0.13.5

Includes thorvg/thorvg#2338 hotfix.

thirdparty/thorvg/inc/config.h

@@ -13,5 +13,5 @@
 // For internal debugging:
 //#define THORVG_LOG_ENABLED
 
-#define THORVG_VERSION_STRING "0.13.3"
+#define THORVG_VERSION_STRING "0.13.5"
 #endif

thirdparty/thorvg/inc/thorvg.h

@@ -649,6 +649,30 @@ class TVG_API Canvas
      */
     virtual Result draw() noexcept;
 
+    /**
+     * @brief Sets the drawing region in the canvas.
+     *
+     * This function defines the rectangular area of the canvas that will be used for drawing operations.
+     * The specified viewport is used to clip the rendering output to the boundaries of the rectangle.
+     *
+     * @param[in] x The x-coordinate of the upper-left corner of the rectangle.
+     * @param[in] y The y-coordinate of the upper-left corner of the rectangle.
+     * @param[in] w The width of the rectangle.
+     * @param[in] h The height of the rectangle.
+     *
+     * @retval Result::Success when succeed, Result::InsufficientCondition otherwise.
+     *
+     * @see SwCanvas::target()
+     * @see GlCanvas::target()
+     * @see WgCanvas::target()
+     *
+     * @warning It's not allowed to change the viewport during Canvas::push() - Canvas::sync() or Canvas::update() - Canvas::sync().
+     *
+     * @note When resetting the target, the viewport will also be reset to the target size.
+     * @note Experimental API
+     */
+    virtual Result viewport(int32_t x, int32_t y, int32_t w, int32_t h) noexcept;
+
     /**
      * @brief Guarantees that drawing task is finished.
      *
@@ -1660,7 +1684,9 @@ class TVG_API SwCanvas final : public Canvas
      * @retval Result::InvalidArguments In case no valid pointer is provided or the width, or the height or the stride is zero.
      * @retval Result::NonSupport In case the software engine is not supported.
      *
-     * @warning Do not access @p buffer during Canvas::draw() - Canvas::sync(). It should not be accessed while TVG is writing on it.
+     * @warning Do not access @p buffer during Canvas::push() - Canvas::sync(). It should not be accessed while the engine is writing on it.
+     *
+     * @see Canvas::viewport()
     */
     Result target(uint32_t* buffer, uint32_t stride, uint32_t w, uint32_t h, Colorspace cs) noexcept;
 
@@ -1726,6 +1752,8 @@ class TVG_API GlCanvas final : public Canvas
      * @warning This API is experimental and not officially supported. It may be modified or removed in future versions.
      * @warning Drawing on the main surface is currently not permitted. If the identifier (@p id) is set to @c 0, the operation will be aborted.
      *
+     * @see Canvas::viewport()
+     *
      * @note Currently, this only allows the GL_RGBA8 color space format.
      * @note Experimental API
     */
@@ -1764,6 +1792,7 @@ class TVG_API WgCanvas final : public Canvas
      * @warning Please do not use it, this API is not official one. It could be modified in the next version.
      *
      * @note Experimental API
+     * @see Canvas::viewport()
      */
     Result target(void* window, uint32_t w, uint32_t h) noexcept;
 
@@ -1856,6 +1885,7 @@ class TVG_API Animation
      *
      * @note For efficiency, ThorVG ignores updates to the new frame value if the difference from the current frame value
      *       is less than 0.001. In such cases, it returns @c Result::InsufficientCondition.
+     *       Values less than 0.001 may be disregarded and may not be accurately retained by the Animation.
      *
      * @see totalFrame()
      *

thirdparty/thorvg/src/common/tvgMath.h

@@ -31,6 +31,7 @@
 
 #define MATH_PI  3.14159265358979323846f
 #define MATH_PI2 1.57079632679489661923f
+#define FLOAT_EPSILON 1.0e-06f  //1.192092896e-07f
 #define PATH_KAPPA 0.552284f
 
 #define mathMin(x, y) (((x) < (y)) ? (x) : (y))
@@ -58,13 +59,19 @@ static inline float mathRad2Deg(float radian)
 
 static inline bool mathZero(float a)
 {
-    return (fabsf(a) < FLT_EPSILON) ? true : false;
+    return (fabsf(a) <= FLOAT_EPSILON) ? true : false;
+}
+
+
+static inline bool mathZero(const Point& p)
+{
+    return mathZero(p.x) && mathZero(p.y);
 }
 
 
 static inline bool mathEqual(float a, float b)
 {
-    return (fabsf(a - b) < FLT_EPSILON);
+    return mathZero(a - b);
 }
 
 
@@ -82,14 +89,14 @@ static inline bool mathEqual(const Matrix& a, const Matrix& b)
 static inline bool mathRightAngle(const Matrix* m)
 {
    auto radian = fabsf(atan2f(m->e21, m->e11));
-   if (radian < FLT_EPSILON || mathEqual(radian, MATH_PI2) || mathEqual(radian, MATH_PI)) return true;
+   if (radian < FLOAT_EPSILON || mathEqual(radian, MATH_PI2) || mathEqual(radian, MATH_PI)) return true;
    return false;
 }
 
 
 static inline bool mathSkewed(const Matrix* m)
 {
-    return (fabsf(m->e21 + m->e12) > FLT_EPSILON);
+    return !mathZero(m->e21 + m->e12);
 }
 
 
@@ -169,6 +176,12 @@ static inline float mathLength(const Point* a, const Point* b)
 }
 
 
+static inline float mathLength(const Point& a)
+{
+    return sqrtf(a.x * a.x + a.y * a.y);
+}
+
+
 static inline Point operator-(const Point& lhs, const Point& rhs)
 {
     return {lhs.x - rhs.x, lhs.y - rhs.y};

thirdparty/thorvg/src/loaders/svg/tvgSvgLoader.cpp

@@ -709,7 +709,7 @@ static bool _toColor(const char* str, uint8_t* r, uint8_t* g, uint8_t* b, char**
         *ref = _idFromUrl((const char*)(str + 3));
         return true;
     } else if (len >= 10 && (str[0] == 'h' || str[0] == 'H') && (str[1] == 's' || str[1] == 'S') && (str[2] == 'l' || str[2] == 'L') && str[3] == '(' && str[len - 1] == ')') {
-        float_t th, ts, tb;
+        float th, ts, tb;
         const char *content, *hue, *satuation, *brightness;
         content = str + 4;
         content = _skipSpace(content, nullptr);
@@ -988,7 +988,7 @@ static bool _attrParseSvgNode(void* data, const char* key, const char* value)
     } else if (!strcmp(key, "style")) {
         return simpleXmlParseW3CAttribute(value, strlen(value), _parseStyleAttr, loader);
 #ifdef THORVG_LOG_ENABLED
-    } else if ((!strcmp(key, "x") || !strcmp(key, "y")) && fabsf(strToFloat(value, nullptr)) > FLT_EPSILON) {
+    } else if ((!strcmp(key, "x") || !strcmp(key, "y")) && fabsf(strToFloat(value, nullptr)) > FLOAT_EPSILON) {
         TVGLOG("SVG", "Unsupported attributes used [Elements type: Svg][Attribute: %s][Value: %s]", key, value);
 #endif
     } else {
@@ -1824,8 +1824,8 @@ static bool _attrParseRectNode(void* data, const char* key, const char* value)
             if (!strncmp(rectTags[i].tag, "rx", sz)) rect->hasRx = true;
             if (!strncmp(rectTags[i].tag, "ry", sz)) rect->hasRy = true;
 
-            if ((rect->rx >= FLT_EPSILON) && (rect->ry < FLT_EPSILON) && rect->hasRx && !rect->hasRy) rect->ry = rect->rx;
-            if ((rect->ry >= FLT_EPSILON) && (rect->rx < FLT_EPSILON) && !rect->hasRx && rect->hasRy) rect->rx = rect->ry;
+            if ((rect->rx >= FLOAT_EPSILON) && (rect->ry < FLOAT_EPSILON) && rect->hasRx && !rect->hasRy) rect->ry = rect->rx;
+            if ((rect->ry >= FLOAT_EPSILON) && (rect->rx < FLOAT_EPSILON) && !rect->hasRx && rect->hasRy) rect->rx = rect->ry;
             return ret;
         }
     }
@@ -3708,7 +3708,7 @@ SvgLoader::~SvgLoader()
 void SvgLoader::run(unsigned tid)
 {
     //According to the SVG standard the value of the width/height of the viewbox set to 0 disables rendering
-    if ((viewFlag & SvgViewFlag::Viewbox) && (fabsf(vw) <= FLT_EPSILON || fabsf(vh) <= FLT_EPSILON)) {
+    if ((viewFlag & SvgViewFlag::Viewbox) && (fabsf(vw) <= FLOAT_EPSILON || fabsf(vh) <= FLOAT_EPSILON)) {
         TVGLOG("SVG", "The <viewBox> width and/or height set to 0 - rendering disabled.");
         root = Scene::gen().release();
         return;

thirdparty/thorvg/src/loaders/svg/tvgXmlParser.h

@@ -25,9 +25,9 @@
 
 #include "tvgSvgLoaderCommon.h"
 
-#define NUMBER_OF_XML_ENTITIES 8
-const char* const xmlEntity[] = {""", " ", "'", "&", "<", ">", "#", "'"};
-const int xmlEntityLength[] = {6, 6, 6, 5, 4, 4, 6, 6};
+#define NUMBER_OF_XML_ENTITIES 9
+const char* const xmlEntity[] = {"
", """, " ", "'", "&", "<", ">", "#", "'"};
+const int xmlEntityLength[] = {5, 6, 6, 6, 5, 4, 4, 6, 6};
 
 enum class SimpleXMLType
 {

thirdparty/thorvg/src/renderer/sw_engine/tvgSwFill.cpp

@@ -140,7 +140,7 @@ bool _prepareLinear(SwFill* fill, const LinearGradient* linear, const Matrix* tr
     fill->linear.dy = y2 - y1;
     fill->linear.len = fill->linear.dx * fill->linear.dx + fill->linear.dy * fill->linear.dy;
 
-    if (fill->linear.len < FLT_EPSILON) return true;
+    if (fill->linear.len < FLOAT_EPSILON) return true;
 
     fill->linear.dx /= fill->linear.len;
     fill->linear.dy /= fill->linear.len;
@@ -182,7 +182,7 @@ bool _prepareRadial(SwFill* fill, const RadialGradient* radial, const Matrix* tr
     auto fy = P(radial)->fy;
     auto fr = P(radial)->fr;
 
-    if (r < FLT_EPSILON) return true;
+    if (r < FLOAT_EPSILON) return true;
 
     fill->radial.dr = r - fr;
     fill->radial.dx = cx - fx;

thirdparty/thorvg/src/renderer/sw_engine/tvgSwRaster.cpp

@@ -1553,7 +1553,7 @@ static bool _rasterSolidGradientRect(SwSurface* surface, const SwBBox& region, c
 
 static bool _rasterLinearGradientRect(SwSurface* surface, const SwBBox& region, const SwFill* fill)
 {
-    if (fill->linear.len < FLT_EPSILON) return false;
+    if (fill->linear.len < FLOAT_EPSILON) return false;
 
     if (_compositing(surface)) {
         if (_matting(surface)) return _rasterGradientMattedRect<FillLinear>(surface, region, fill);

thirdparty/thorvg/src/renderer/sw_engine/tvgSwRenderer.cpp

@@ -434,10 +434,6 @@ bool SwRenderer::target(pixel_t* data, uint32_t stride, uint32_t w, uint32_t h,
     surface->channelSize = CHANNEL_SIZE(cs);
     surface->premultiplied = true;
 
-    vport.x = vport.y = 0;
-    vport.w = surface->w;
-    vport.h = surface->h;
-
     return rasterCompositor(surface);
 }
 
@@ -607,6 +603,12 @@ bool SwRenderer::mempool(bool shared)
 }
 
 
+const Surface* SwRenderer::mainSurface()
+{
+    return surface;
+}
+
+
 Compositor* SwRenderer::target(const RenderRegion& region, ColorSpace cs)
 {
     auto x = region.x;

thirdparty/thorvg/src/renderer/sw_engine/tvgSwRenderer.h

@@ -49,6 +49,7 @@ class SwRenderer : public RenderMethod
     bool viewport(const RenderRegion& vp) override;
     bool blend(BlendMethod method) override;
     ColorSpace colorSpace() override;
+    const Surface* mainSurface() override;
 
     bool clear() override;
     bool sync() override;

thirdparty/thorvg/src/renderer/sw_engine/tvgSwShape.cpp

@@ -124,7 +124,7 @@ static void _dashLineTo(SwDashStroke& dash, const Point* to, const Matrix* trans
                 len -= dash.curLen;
                 lineSplitAt(cur, dash.curLen, left, right);
                 if (!dash.curOpGap) {
-                    if (dash.move || dash.pattern[dash.curIdx] - dash.curLen < FLT_EPSILON) {
+                    if (dash.move || dash.pattern[dash.curIdx] - dash.curLen < FLOAT_EPSILON) {
                         _outlineMoveTo(*dash.outline, &left.pt1, transform);
                         dash.move = false;
                     }
@@ -185,7 +185,7 @@ static void _dashCubicTo(SwDashStroke& dash, const Point* ctrl1, const Point* ct
                 len -= dash.curLen;
                 bezSplitAt(cur, dash.curLen, left, right);
                 if (!dash.curOpGap) {
-                    if (dash.move || dash.pattern[dash.curIdx] - dash.curLen < FLT_EPSILON) {
+                    if (dash.move || dash.pattern[dash.curIdx] - dash.curLen < FLOAT_EPSILON) {
                         _outlineMoveTo(*dash.outline, &left.start, transform);
                         dash.move = false;
                     }

thirdparty/thorvg/src/renderer/tvgCanvas.cpp

@@ -81,6 +81,12 @@ Result Canvas::update(Paint* paint) noexcept
 }
 
 
+Result Canvas::viewport(int32_t x, int32_t y, int32_t w, int32_t h) noexcept
+{
+    return pImpl->viewport(x, y, w, h);
+}
+
+
 Result Canvas::sync() noexcept
 {
     return pImpl->sync();

thirdparty/thorvg/src/renderer/tvgCanvas.h

@@ -28,10 +28,14 @@
 
 struct Canvas::Impl
 {
+    enum Status : uint8_t {Synced = 0, Updating, Drawing};
+
     list<Paint*> paints;
     RenderMethod* renderer;
+    RenderRegion vport = {0, 0, INT32_MAX, INT32_MAX};
+    Status status = Status::Synced;
+
     bool refresh = false;   //if all paints should be updated by force.
-    bool drawing = false;   //on drawing condition?
 
     Impl(RenderMethod* pRenderer) : renderer(pRenderer)
     {
@@ -41,14 +45,12 @@ struct Canvas::Impl
     ~Impl()
     {
         //make it sure any deffered jobs
-        if (renderer) {
-            renderer->sync();
-            renderer->clear();
-        }
+        renderer->sync();
+        renderer->clear();
 
         clearPaints();
 
-        if (renderer && (renderer->unref() == 0)) delete(renderer);
+        if (renderer->unref() == 0) delete(renderer);
     }
 
     void clearPaints()
@@ -62,7 +64,7 @@ struct Canvas::Impl
     Result push(unique_ptr<Paint> paint)
     {
         //You can not push paints during rendering.
-        if (drawing) return Result::InsufficientCondition;
+        if (status == Status::Drawing) return Result::InsufficientCondition;
 
         auto p = paint.release();
         if (!p) return Result::MemoryCorruption;
@@ -75,12 +77,12 @@ struct Canvas::Impl
     Result clear(bool free)
     {
         //Clear render target before drawing
-        if (!renderer || !renderer->clear()) return Result::InsufficientCondition;
+        if (!renderer->clear()) return Result::InsufficientCondition;
 
         //Free paints
         if (free) clearPaints();
 
-        drawing = false;
+        status = Status::Synced;
 
         return Result::Success;
     }
@@ -92,7 +94,7 @@ struct Canvas::Impl
 
     Result update(Paint* paint, bool force)
     {
-        if (paints.empty() || drawing || !renderer) return Result::InsufficientCondition;
+        if (paints.empty() || status == Status::Drawing) return Result::InsufficientCondition;
 
         Array<RenderData> clips;
         auto flag = RenderUpdateFlag::None;
@@ -106,12 +108,13 @@ struct Canvas::Impl
             }
             refresh = false;
         }
+        status = Status::Updating;
         return Result::Success;
     }
 
     Result draw()
     {
-        if (drawing || paints.empty() || !renderer || !renderer->preRender()) return Result::InsufficientCondition;
+        if (status == Status::Drawing || paints.empty() || !renderer->preRender()) return Result::InsufficientCondition;
 
         bool rendered = false;
         for (auto paint : paints) {
@@ -120,22 +123,37 @@ struct Canvas::Impl
 
         if (!rendered || !renderer->postRender()) return Result::InsufficientCondition;
 
-        drawing = true;
-
+        status = Status::Drawing;
         return Result::Success;
     }
 
     Result sync()
     {
-        if (!drawing) return Result::InsufficientCondition;
+        if (status == Status::Synced) return Result::InsufficientCondition;
 
         if (renderer->sync()) {
-            drawing = false;
+            status = Status::Synced;
             return Result::Success;
         }
 
         return Result::InsufficientCondition;
     }
+
+    Result viewport(int32_t x, int32_t y, int32_t w, int32_t h)
+    {
+        if (status != Status::Synced) return Result::InsufficientCondition;
+        RenderRegion val = {x, y, w, h};
+        //intersect if the target buffer is already set.
+        auto surface = renderer->mainSurface();
+        if (surface && surface->w > 0 && surface->h > 0) {
+            val.intersect({0, 0, (int32_t)surface->w, (int32_t)surface->h});
+        }
+        if (vport == val) return Result::Success;
+        renderer->viewport(val);
+        vport = val;
+        needRefresh();
+        return Result::Success;
+    }
 };
 
 #endif /* _TVG_CANVAS_H_ */