implement basic interfaces

major functions are added for Path specification.
added backend engine infra skeleton.

Change-Id: Ia923b02649cff545fa768ab8538ad7187195826f

.gitignore

@@ -1,4 +1,4 @@
 build
 .vscode
 *.swp
-test
+testShape

inc/tizenvg.h

@@ -50,7 +50,7 @@ private: \
 namespace tvg
 {
 
-class SceneNode;
+enum class TIZENVG_EXPORT PathCommand { Close, MoveTo, LineTo, CubicTo };
 
 
 /**
@@ -65,7 +65,7 @@ class TIZENVG_EXPORT PaintNode
 {
 public:
     virtual ~PaintNode() {}
-    virtual int prepare() = 0;
+    virtual int update() = 0;
 };
 
 
@@ -82,7 +82,12 @@ class TIZENVG_EXPORT ShapeNode final : public PaintNode
 public:
     ~ShapeNode();
 
-    int prepare() noexcept override;
+    int update() noexcept override;
+
+    int appendRect(float x, float y, float w, float h, float radius) noexcept;
+    int appendCircle(float cx, float cy, float radius) noexcept;
+    int fill(uint32_t r, uint32_t g, uint32_t b, uint32_t a) noexcept;
+    int clear() noexcept;
 
     static std::unique_ptr<ShapeNode> gen();
 
@@ -103,8 +108,9 @@ class TIZENVG_EXPORT SceneNode final : public PaintNode
 public:
     ~SceneNode();
 
+    int update() noexcept override;
+
     int push(std::unique_ptr<ShapeNode> shape) noexcept;
-    int prepare() noexcept override;
 
     static std::unique_ptr<SceneNode> gen() noexcept;
 
@@ -128,6 +134,7 @@ public:
     int push(std::unique_ptr<PaintNode> paint) noexcept;
     int clear() noexcept;
 
+    int update(PaintNode* node) noexcept;
     int draw(bool async = true) noexcept;
     int sync() noexcept;
 

src/lib/gl_engine/meson.build

@@ -0,0 +1,9 @@
+source_file = [
+   'tvgGlRaster.h',
+   'tvgGlRaster.cpp',
+]
+
+glraster_dep = declare_dependency(
+   include_directories : include_directories('.'),
+   sources : source_file
+)

src/lib/gl_engine/tvgGlRaster.cpp

@@ -0,0 +1,61 @@
+/*
+ * Copyright (c) 2020 Samsung Electronics Co., Ltd All Rights Reserved
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *               http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ */
+#ifndef _TVG_GL_RASTER_CPP_
+#define _TVG_GL_RASTER_CPP_
+
+#include "tvgCommon.h"
+#include "tvgGlRaster.h"
+
+
+static GlRaster* pInst = nullptr;
+
+int GlRaster::prepare(ShapeNode *shape)
+{
+    cout << "GlRaster prepare!!" << endl;
+
+    return 0;
+}
+
+
+int GlRaster::init()
+{
+    if (pInst) return -1;
+    pInst = new GlRaster();
+    assert(pInst);
+
+    return 0;
+}
+
+
+int GlRaster::term()
+{
+    if (!pInst) return -1;
+    cout << "GlRaster(" << pInst << ") destroyed!" << endl;
+    delete(pInst);
+    pInst = nullptr;
+    return 0;
+}
+
+
+GlRaster* GlRaster::inst()
+{
+    assert(pInst);
+    return pInst;
+}
+
+
+#endif /* _TVG_GL_RASTER_CPP_ */

src/lib/gl_engine/tvgGlRaster.h

@@ -0,0 +1,38 @@
+/*
+ * Copyright (c) 2020 Samsung Electronics Co., Ltd All Rights Reserved
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *               http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ */
+#ifndef _TVG_GL_RASTER_H_
+#define _TVG_GL_RASTER_H_
+
+namespace tvg
+{
+
+class GlRaster : public RasterMethod
+{
+public:
+    int prepare(ShapeNode *shape) override;
+    static GlRaster* inst();
+    static int init();
+    static int term();
+
+private:
+    GlRaster(){};
+    ~GlRaster(){};
+};
+
+}
+
+#endif /* _TVG_GL_RASTER_H_ */

src/lib/meson.build

@@ -1,7 +1,11 @@
+subdir('sw_engine')
+subdir('gl_engine')
+
 source_file = [
    'tvgCommon.h',
    'tvgEngine.cpp',
    'tvgCanvasBase.h',
+   'tvgShapePath.h',
    'tvgSwCanvas.cpp',
    'tvgGlCanvas.cpp',
    'tvgSceneNode.cpp',
@@ -12,3 +16,4 @@ src_dep = declare_dependency(
    include_directories : include_directories('.'),
    sources : source_file
 )
+

src/lib/sw_engine/meson.build

@@ -0,0 +1,9 @@
+source_file = [
+   'tvgSwRaster.h',
+   'tvgSwRaster.cpp',
+]
+
+swraster_dep = declare_dependency(
+   include_directories : include_directories('.'),
+   sources : source_file
+)

src/lib/sw_engine/tvgSwRaster.cpp

@@ -0,0 +1,61 @@
+/*
+ * Copyright (c) 2020 Samsung Electronics Co., Ltd All Rights Reserved
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *               http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ */
+#ifndef _TVG_SW_RASTER_CPP_
+#define _TVG_SW_RASTER_CPP_
+
+#include "tvgCommon.h"
+#include "tvgSwRaster.h"
+
+
+static SwRaster* pInst = nullptr;
+
+int SwRaster::prepare(ShapeNode *shape)
+{
+    cout << "SWRaster prepare!!" << endl;
+
+    return 0;
+}
+
+
+int SwRaster::init()
+{
+    if (pInst) return -1;
+    pInst = new SwRaster();
+    assert(pInst);
+
+    return 0;
+}
+
+
+int SwRaster::term()
+{
+    if (!pInst) return -1;
+    cout << "SwRaster(" << pInst << ") destroyed!" << endl;
+    delete(pInst);
+    pInst = nullptr;
+    return 0;
+}
+
+
+SwRaster* SwRaster::inst()
+{
+    assert(pInst);
+    return pInst;
+}
+
+
+#endif /* _TVG_SW_RASTER_CPP_ */

src/lib/sw_engine/tvgSwRaster.h

@@ -0,0 +1,38 @@
+/*
+ * Copyright (c) 2020 Samsung Electronics Co., Ltd All Rights Reserved
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *               http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ */
+#ifndef _TVG_SW_RASTER_H_
+#define _TVG_SW_RASTER_H_
+
+namespace tvg
+{
+
+class SwRaster : public RasterMethod
+{
+public:
+    int prepare(ShapeNode *shape) override;
+    static SwRaster* inst();
+    static int init();
+    static int term();
+
+private:
+    SwRaster(){};
+    ~SwRaster(){};
+};
+
+}
+
+#endif /* _TVG_SW_RASTER_H_ */

src/lib/tvgCanvasBase.h

@@ -14,8 +14,8 @@
  *  limitations under the License.
  *
  */
-#ifndef _TVG_CANVAS_CPP_
-#define _TVG_CANVAS_CPP_
+#ifndef _TVG_CANVAS_BASE_CPP_
+#define _TVG_CANVAS_BASE_CPP_
 
 #include "tvgCommon.h"
 
@@ -25,17 +25,59 @@
 
 struct CanvasBase
 {
+    vector<PaintNode*> nodes;
+    RasterMethod*      raster;
 
-    int push(unique_ptr<PaintNode> paint)
+    CanvasBase(RasterMethod *pRaster):raster(pRaster)
     {
+
+    }
+
+    ~CanvasBase()
+    {
+       clear();
+    }
+
+    int reserve(size_t n)
+    {
+        nodes.reserve(n);
+
         return 0;
     }
 
     int clear()
     {
+        for (auto node : nodes) {
+            delete(node);
+        }
+        nodes.clear();
+
         return 0;
     }
 
+    int push(unique_ptr<PaintNode> paint)
+    {
+        PaintNode *node = paint.release();
+        assert(node);
+
+        nodes.push_back(node);
+
+        int ret = node->update();
+        if (ret) return ret;
+
+        if (SceneNode *scene = dynamic_cast<SceneNode *>(node)) {
+
+             //TODO:
+
+        } else if (ShapeNode *shape = dynamic_cast<ShapeNode *>(node)) {
+            return raster->prepare(shape);
+        }
+
+        cout << "What type of PaintNode? = " << node << endl;
+
+        return -1;
+    }
+
 };
 
 
@@ -43,4 +85,4 @@ struct CanvasBase
 /* External Class Implementation                                        */
 /************************************************************************/
 
-#endif /* _TVG_CANVAS_CPP_ */
+#endif /* _TVG_CANVAS_BASE_CPP_ */

src/lib/tvgCommon.h

@@ -24,6 +24,24 @@
 
 using namespace std;
 using namespace tvg;
-using var = float;
+
+namespace tvg
+{
+
+struct Point
+{
+    float x, y;
+};
+
+class RasterMethod
+{
+public:
+    virtual ~RasterMethod() {}
+    virtual int prepare(ShapeNode *shape) = 0;
+};
+
+
+}
+
 
 #endif //_TVG_COMMON_H_

src/lib/tvgEngine.cpp

@@ -18,6 +18,8 @@
 #define _TVG_ENGINE_CPP_
 
 #include "tvgCommon.h"
+#include "tvgSwRaster.h"
+#include "tvgGlRaster.h"
 
 /************************************************************************/
 /* Internal Class Implementation                                        */
@@ -30,13 +32,23 @@
 
 int Engine::init() noexcept
 {
-    return 0;
+    //TODO: Initialize Raster engines by configuration.
+
+    int ret = 0;
+    ret |= SwRaster::init();
+    ret |= GlRaster::init();
+
+    return ret;
 }
 
 
 int Engine::term() noexcept
 {
-    return 0;
+    int ret = 0;
+    ret |= SwRaster::term();
+    ret |= GlRaster::term();
+
+    return ret;
 }
 
 #endif /* _TVG_ENGINE_CPP_ */

src/lib/tvgGlCanvas.cpp

@@ -19,6 +19,7 @@
 
 #include "tvgCommon.h"
 #include "tvgCanvasBase.h"
+#include "tvgGlRaster.h"
 
 /************************************************************************/
 /* Internal Class Implementation                                        */
@@ -26,7 +27,7 @@
 
 struct GlCanvas::Impl : CanvasBase
 {
-    //...
+    Impl() : CanvasBase(GlRaster::inst()) {}
 };
 
 

src/lib/tvgSceneNode.cpp

@@ -57,7 +57,7 @@ int SceneNode :: push(unique_ptr<ShapeNode> shape) noexcept
 }
 
 
-int SceneNode :: prepare() noexcept
+int SceneNode :: update() noexcept
 {
 
     return 0;

src/lib/tvgShapeNode.cpp

@@ -18,6 +18,7 @@
 #define _TVG_SHAPE_NODE_CPP_
 
 #include "tvgCommon.h"
+#include "tvgShapePath.h"
 
 /************************************************************************/
 /* Internal Class Implementation                                        */
@@ -33,33 +34,25 @@ struct ShapeStroke
 };
 
 
-struct ShapePath
-{
-};
-
-
 struct ShapeTransform
 {
-    var e[4*4];
-};
-
-
-struct ShapeChildren
-{
-    vector<unique_ptr<ShapeNode>> v;
+    float e[4*4];
 };
 
 
 struct ShapeNode::Impl
 {
-    ShapeChildren *children = nullptr;
     ShapeTransform *transform = nullptr;
     ShapeFill *fill = nullptr;
     ShapeStroke *stroke = nullptr;
     ShapePath *path = nullptr;
-    uint32_t color = 0;
-    uint32_t id = 0;
 
+    uint8_t color[4] = {0, 0, 0, 0};    //r, g, b, a
+
+    Impl() : path(new ShapePath)
+    {
+
+    }
 
     ~Impl()
     {
@@ -67,9 +60,7 @@ struct ShapeNode::Impl
         if (stroke) delete(stroke);
         if (fill) delete(fill);
         if (transform) delete(transform);
-        if (children) delete(children);
     }
-
 };
 
 
@@ -95,10 +86,69 @@ unique_ptr<ShapeNode> ShapeNode::gen()
 }
 
 
-int ShapeNode :: prepare() noexcept
+int ShapeNode :: update() noexcept
+{
+    auto impl = pImpl.get();
+    assert(impl);
+
+    return 0;
+}
+
+
+int ShapeNode :: clear() noexcept
+{
+    auto impl = pImpl.get();
+    assert(impl);
+
+    return impl->path->clear();
+}
+
+
+int ShapeNode ::appendCircle(float cx, float cy, float radius) noexcept
 {
     return 0;
 }
 
 
+int ShapeNode :: appendRect(float x, float y, float w, float h, float radius) noexcept
+{
+    auto impl = pImpl.get();
+    assert(impl);
+
+    //clamping radius by minimum size
+    auto min = (w < h ? w : h) * 0.5f;
+    if (radius > min) radius = min;
+
+    //rectangle
+    if (radius == 0) {
+        impl->path->reserve(5, 4);
+        impl->path->moveTo(x, y);
+        impl->path->lineTo(x + w, y);
+        impl->path->lineTo(x + w, y + h);
+        impl->path->lineTo(x, y + h);
+        impl->path->close();
+    //circle
+    } else if (w == h && radius * 2 == w) {
+        appendCircle(x + (w * 0.5f), y + (h * 0.5f), radius);
+    } else {
+        //...
+    }
+
+    return 0;
+}
+
+
+int ShapeNode :: fill(uint32_t r, uint32_t g, uint32_t b, uint32_t a) noexcept
+{
+    auto impl = pImpl.get();
+    assert(impl);
+
+    impl->color[0] = r;
+    impl->color[1] = g;
+    impl->color[2] = b;
+    impl->color[3] = a;
+
+    return 0;
+}
+
 #endif //_TVG_SHAPE_NODE_CPP_

src/lib/tvgShapePath.h

@@ -0,0 +1,149 @@
+/*
+ * Copyright (c) 2020 Samsung Electronics Co., Ltd All Rights Reserved
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *               http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ */
+#ifndef _TVG_SHAPE_PATH_CPP_
+#define _TVG_SHAPE_PATH_CPP_
+
+#include "tvgCommon.h"
+
+/************************************************************************/
+/* Internal Class Implementation                                        */
+/************************************************************************/
+
+struct ShapePath
+{
+    PathCommand* cmds = nullptr;
+    uint32_t cmdCnt = 0;
+    uint32_t reservedCmdCnt = 0;
+
+    Point *pts = nullptr;
+    uint32_t ptsCnt = 0;
+    uint32_t reservedPtsCnt = 0;
+
+
+    ~ShapePath()
+    {
+        if (cmds) delete(cmds);
+        if (pts) delete(pts);
+    }
+
+    int reserveCmd(uint32_t cmdCnt)
+    {
+        if (cmdCnt > reservedCmdCnt) {
+            reservedCmdCnt = cmdCnt;
+            cmds = static_cast<PathCommand*>(realloc(cmds, sizeof(PathCommand) * reservedCmdCnt));
+            assert(cmds);
+        }
+        return 0;
+    }
+
+    int reservePts(uint32_t ptsCnt)
+    {
+        if (ptsCnt > reservedPtsCnt) {
+            reservedPtsCnt = ptsCnt;
+            pts = static_cast<Point*>(realloc(pts, sizeof(Point) * reservedPtsCnt));
+            assert(pts);
+        }
+        return 0;
+    }
+
+    int reserve(uint32_t cmdCnt, uint32_t ptsCnt)
+    {
+        reserveCmd(cmdCnt);
+        reservePts(ptsCnt);
+
+        return 0;
+    }
+
+    int clear()
+    {
+        cmdCnt = 0;
+        ptsCnt = 0;
+
+        return 0;
+    }
+
+    int moveTo(float x, float y)
+    {
+        if (cmdCnt + 1 > reservedCmdCnt) reserveCmd((cmdCnt + 1) * 2);
+        if (ptsCnt + 2 > reservedPtsCnt) reservePts((ptsCnt + 2) * 2);
+
+        cmds[cmdCnt++] = PathCommand::MoveTo;
+        pts[ptsCnt++] = {x, y};
+
+        return 0;
+    }
+
+    int lineTo(float x, float y)
+    {
+        if (cmdCnt + 1 > reservedCmdCnt) reserveCmd((cmdCnt + 1) * 2);
+        if (ptsCnt + 2 > reservedPtsCnt) reservePts((ptsCnt + 2) * 2);
+
+        cmds[cmdCnt++] = PathCommand::LineTo;
+        pts[ptsCnt++] = {x, y};
+
+        return 0;
+    }
+
+    int cubicTo(float cx1, float cy1, float cx2, float cy2, float x, float y)
+    {
+        if (cmdCnt + 1 > reservedCmdCnt) reserveCmd((cmdCnt + 1) * 2);
+        if (ptsCnt + 3 > reservedPtsCnt) reservePts((ptsCnt + 3) * 2);
+
+        cmds[cmdCnt++] = PathCommand::CubicTo;
+        pts[ptsCnt++] = {cx1, cy1};
+        pts[ptsCnt++] = {cx2, cy2};
+        pts[ptsCnt++] = {x, y};
+
+        return 0;
+    }
+
+    int close()
+    {
+        if (cmdCnt + 1 > reservedCmdCnt) reserveCmd((cmdCnt + 1) * 2);
+        cmds[cmdCnt++] = PathCommand::Close;
+
+        return 0;
+    }
+
+    int bounds(float& x, float& y, float& w, float& h)
+    {
+        if (ptsCnt == 0) return -1;
+
+        Point min = { pts[0].x, pts[0].y };
+        Point max = { pts[0].x, pts[0].y };
+
+        for(uint32_t i = 1; i <= ptsCnt; ++i) {
+            if (pts[i].x < min.x) min.x = pts[i].x;
+            if (pts[i].y < min.y) min.y = pts[i].y;
+            if (pts[i].x > max.x) max.x = pts[i].x;
+            if (pts[i].y > max.y) max.y = pts[i].y;
+        }
+
+        x = min.x;
+        y = min.y;
+        w = max.x - min.x;
+        h = max.y - min.y;
+
+        return 0;
+    }
+};
+
+/************************************************************************/
+/* External Class Implementation                                        */
+/************************************************************************/
+
+#endif //_TVG_SHAPE_PATH_CPP_

src/lib/tvgSwCanvas.cpp

@@ -19,6 +19,8 @@
 
 #include "tvgCommon.h"
 #include "tvgCanvasBase.h"
+#include "tvgSwRaster.h"
+
 
 /************************************************************************/
 /* Internal Class Implementation                                        */
@@ -29,6 +31,8 @@ struct SwCanvas::Impl : CanvasBase
     uint32_t* buffer = nullptr;
     int stride = 0;
     int height = 0;
+
+    Impl() : CanvasBase(SwRaster::inst()) {}
 };
 
 
@@ -65,6 +69,7 @@ int SwCanvas::push(unique_ptr<PaintNode> paint) noexcept
 {
     auto impl = pImpl.get();
     assert(impl);
+
     return impl->push(move(paint));
 }
 

src/meson.build

@@ -3,7 +3,7 @@ compiler_flags = ['-DTIZENVG_BUILD']
 subdir('lib')
 subdir('examples')
 
-tizenvg_lib_dep = [ src_dep ]
+tizenvg_lib_dep = [ src_dep, swraster_dep, glraster_dep ]
 
 tizenvg_lib = library(
 	'tizenvg',

test/makefile

@@ -1,2 +1,2 @@
 all:
-	gcc -o tvgDrawShape tvgDrawShape.cpp -g -lstdc++ `pkg-config --cflags --libs tizenvg`
+	gcc -o testShape testShape.cpp -g -lstdc++ `pkg-config --cflags --libs tizenvg`

test/testShape.cpp

@@ -17,8 +17,8 @@ int main(int argc, char **argv)
 
     //Prepare a Shape (Rectangle)
     auto shape1 = tvg::ShapeNode::gen();
-//    shape1->rect(0, 0, 400, 400, 0.1);      //x, y, w, h, corner_radius
-//    shape1->fill(0, 255, 0, 255);           //r, g, b, a
+    shape1->appendRect(0, 0, 400, 400, 0);      //x, y, w, h, corner_radius
+    shape1->fill(0, 255, 0, 255);           //r, g, b, a
 
     /* Push the shape into the Canvas drawing list
        When this shape is into the canvas list, the shape could update & prepare