svgio visitor, add draw commands and create the from svg

Adds a visitor for svgio for visiting svg nodes and create something
useful from them.

Basic draw commands - a tree of draw commands (with sub-pixel
precision support) just to store a simple definition for drawing.

Adds a svg draw visitor and create draw commands from the svg
structure and expose the commands through UNO API.

Change-Id: I073e891a2cffdd76d4e3b838590e3a19c998e9bf
Reviewed-on: https://gerrit.libreoffice.org/68770
Tested-by: Jenkins
Reviewed-by: Tomaž Vajngerl <quikee@gmail.com>
(cherry picked from commit 7894fd2b442eff45ecf14088ebd17ee9f8678752)

1 files changed, 74 insertions, 0 deletions

diff --git a/include/basegfx/DrawCommands.hxx b/include/basegfx/DrawCommands.hxx
new file mode 100644
index 000000000000..23afbecb9273
--- /dev/null
+++ b/include/basegfx/DrawCommands.hxx
@@ -0,0 +1,74 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+class DrawBase;
+
+class DrawCommand
+{
+public:
+    std::vector<std::shared_ptr<DrawBase>> maChildren;
+};
+
+enum class DrawCommandType
+{
+    Root,
+    Rectangle,
+    Path
+};
+
+class DrawBase : public DrawCommand
+{
+private:
+    DrawCommandType meType;
+
+public:
+    DrawBase(DrawCommandType eType)
+        : meType(eType)
+    {
+    }
+
+    DrawCommandType getType() { return meType; }
+};
+
+class DrawRoot : public DrawBase
+{
+public:
+    basegfx::B2DRange maRectangle;
+
+    DrawRoot()
+        : DrawBase(DrawCommandType::Root)
+    {
+    }
+};
+
+class DrawRectangle : public DrawBase
+{
+public:
+    basegfx::B2DRange maRectangle;
+
+    DrawRectangle(basegfx::B2DRange const& rRectangle)
+        : DrawBase(DrawCommandType::Rectangle)
+        , maRectangle(rRectangle)
+    {
+    }
+};
+
+class DrawPath : public DrawBase
+{
+public:
+    basegfx::B2DPolyPolygon maPolyPolygon;
+
+    DrawPath(basegfx::B2DPolyPolygon const& rPolyPolygon)
+        : DrawBase(DrawCommandType::Path)
+        , maPolyPolygon(rPolyPolygon)
+    {
+    }
+};
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */