Use ThorVG instead of NanoSVG for importing SVGs

ThorVG is a platform-independent portable library for drawing vector-based
scene and animation.

Co-authored-by: Rémi Verschelde <rverschelde@gmail.com>

1 files changed, 128 insertions, 0 deletions

diff --git a/thirdparty/thorvg/src/lib/sw_engine/tvgSwImage.cpp b/thirdparty/thorvg/src/lib/sw_engine/tvgSwImage.cpp
new file mode 100644
index 0000000000..fe22fce017
--- /dev/null
+++ b/thirdparty/thorvg/src/lib/sw_engine/tvgSwImage.cpp
@@ -0,0 +1,128 @@
+/*
+ * Copyright (c) 2020-2021 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 "tvgMath.h"
+#include "tvgSwCommon.h"
+
+/************************************************************************/
+/* Internal Class Implementation                                        */
+/************************************************************************/
+
+static inline bool _onlyShifted(const Matrix* m)
+{
+    if (mathEqual(m->e11, 1.0f) && mathEqual(m->e22, 1.0f) && mathZero(m->e12) && mathZero(m->e21)) return true;
+    return false;
+}
+
+
+static bool _genOutline(SwImage* image, const Matrix* transform, SwMpool* mpool, unsigned tid)
+{
+    image->outline = mpoolReqOutline(mpool, tid);
+    auto outline = image->outline;
+
+     if (outline->reservedPtsCnt < 5) {
+        outline->reservedPtsCnt = 5;
+        outline->pts = static_cast<SwPoint*>(realloc(outline->pts, outline->reservedPtsCnt * sizeof(SwPoint)));
+        outline->types = static_cast<uint8_t*>(realloc(outline->types, outline->reservedPtsCnt * sizeof(uint8_t)));
+     }
+
+    if (outline->reservedCntrsCnt < 1) {
+        outline->reservedCntrsCnt = 1;
+        outline->cntrs = static_cast<uint16_t*>(realloc(outline->cntrs, outline->reservedCntrsCnt * sizeof(uint16_t)));
+        outline->closed = static_cast<bool*>(realloc(outline->closed, outline->reservedCntrsCnt * sizeof(bool)));
+        outline->closed[0] = true;
+    }
+
+    auto w = static_cast<float>(image->w);
+    auto h = static_cast<float>(image->h);
+
+    Point to[4] = {{0 ,0}, {w, 0}, {w, h}, {0, h}};
+    for (int i = 0; i < 4; i++) {
+        outline->pts[outline->ptsCnt] = mathTransform(&to[i], transform);
+        outline->types[outline->ptsCnt] = SW_CURVE_TYPE_POINT;
+        ++outline->ptsCnt;
+    }
+
+    outline->pts[outline->ptsCnt] = outline->pts[0];
+    outline->types[outline->ptsCnt] = SW_CURVE_TYPE_POINT;
+    ++outline->ptsCnt;
+
+    outline->cntrs[outline->cntrsCnt] = outline->ptsCnt - 1;
+    ++outline->cntrsCnt;
+
+    image->outline = outline;
+
+    return true;
+}
+
+
+/************************************************************************/
+/* External Class Implementation                                        */
+/************************************************************************/
+
+bool imagePrepare(SwImage* image, const Matrix* transform, const SwBBox& clipRegion, SwBBox& renderRegion, SwMpool* mpool, unsigned tid)
+{
+    image->direct = _onlyShifted(transform);
+
+    //Fast track: Non-transformed image but just shifted.
+    if (image->direct) {
+        image->ox = -static_cast<uint32_t>(round(transform->e13));
+        image->oy = -static_cast<uint32_t>(round(transform->e23));
+    //Figure out the scale factor by transform matrix
+    } else {
+        auto scaleX = sqrtf((transform->e11 * transform->e11) + (transform->e21 * transform->e21));
+        auto scaleY = sqrtf((transform->e22 * transform->e22) + (transform->e12 * transform->e12));
+        image->scale = (fabsf(scaleX - scaleY) > 0.01f) ? 1.0f : scaleX;
+
+        if (mathZero(transform->e12) && mathZero(transform->e21)) image->scaled = true;
+        else image->scaled = false;
+    }
+
+    if (!_genOutline(image, transform, mpool, tid)) return false;
+    return mathUpdateOutlineBBox(image->outline, clipRegion, renderRegion, image->direct);
+}
+
+
+bool imageGenRle(SwImage* image, const SwBBox& renderRegion, bool antiAlias)
+{
+    if ((image->rle = rleRender(image->rle, image->outline, renderRegion, antiAlias))) return true;
+
+    return false;
+}
+
+
+void imageDelOutline(SwImage* image, SwMpool* mpool, uint32_t tid)
+{
+    mpoolRetOutline(mpool, tid);
+    image->outline = nullptr;
+}
+
+
+void imageReset(SwImage* image)
+{
+    rleReset(image->rle);
+}
+
+
+void imageFree(SwImage* image)
+{
+    rleFree(image->rle);
+}