sw: read theme from OOXML file and set it to the draw page

This change extends writerfilter to use oox::ThemeFragmentHandler
to read the theme properties, and sets that to the one and only
draw page of a Writer document.

This change also removes ThemeTable and replaces it with the
ThemeHandler, which takes theme font data from svx::Theme
instead.

In addition, a test has been writen, which loads a document with
a theme, and asserts the draw page has the theme and the theme
properties currently supported.

Change-Id: Iff0048cd21ea030ac55287707852acc463ec3cb0
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/143699
Tested-by: Jenkins
Reviewed-by: Tomaž Vajngerl <quikee@gmail.com>

2 files changed, 59 insertions, 0 deletions

diff --git a/include/oox/drawingml/ThemeFilterBase.hxx b/include/oox/drawingml/ThemeFilterBase.hxx
new file mode 100644
index 000000000000..7f311e206a90
--- /dev/null
+++ b/include/oox/drawingml/ThemeFilterBase.hxx
@@ -0,0 +1,58 @@
+/* -*- 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/.
+ */
+
+#pragma once
+
+#include <memory>
+#include <oox/dllapi.h>
+#include <oox/core/xmlfilterbase.hxx>
+#include <oox/drawingml/drawingmltypes.hxx>
+#include <rtl/ref.hxx>
+
+namespace oox::drawingml
+{
+class OOX_DLLPUBLIC ThemeFilterBase final : public core::XmlFilterBase
+{
+public:
+    typedef rtl::Reference<ThemeFilterBase> Pointer_t;
+
+    explicit ThemeFilterBase(css::uno::Reference<css::uno::XComponentContext> const& rxContext);
+
+    virtual ~ThemeFilterBase() override;
+
+    /** Has to be implemented by each filter, returns the current theme. */
+    virtual const oox::drawingml::Theme* getCurrentTheme() const override;
+
+    /** May be implemented by filters which handle Diagrams, default returns empty ptr */
+    virtual std::shared_ptr<oox::drawingml::Theme> getCurrentThemePtr() const override;
+
+    void setCurrentTheme(const oox::drawingml::ThemePtr& pTheme);
+
+    /** Has to be implemented by each filter to return the collection of VML shapes. */
+    virtual oox::vml::Drawing* getVmlDrawing() override;
+
+    /** Has to be implemented by each filter to return TableStyles. */
+    virtual oox::drawingml::table::TableStyleListPtr getTableStyles() override;
+
+    virtual oox::drawingml::chart::ChartConverter* getChartConverter() override;
+
+    virtual oox::ole::VbaProject* implCreateVbaProject() const override;
+
+    virtual bool importDocument() override { return true; }
+    virtual bool exportDocument() override { return false; }
+
+private:
+    virtual OUString SAL_CALL getImplementationName() override;
+
+    oox::drawingml::ThemePtr mpTheme;
+};
+
+} // namespace oox::drawingml
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/include/oox/drawingml/themefragmenthandler.hxx b/include/oox/drawingml/themefragmenthandler.hxx
index e433c350de80..918a3eb861b9 100644
--- a/include/oox/drawingml/themefragmenthandler.hxx
+++ b/include/oox/drawingml/themefragmenthandler.hxx
@@ -44,6 +44,7 @@ public:
     virtual             ~ThemeFragmentHandler() override;
 
     virtual ::oox::core::ContextHandlerRef onCreateContext( sal_Int32 nElement, const AttributeList& rAttribs ) override;
+    void onStartElement(const AttributeList& rAttribs) override;
 
 private:
     Theme&              mrTheme;