Adding upstream version 1:7.0.4.upstream/1%7.0.4upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 140 insertions, 0 deletions

diff --git a/include/cppcanvas/renderer.hxx b/include/cppcanvas/renderer.hxx
new file mode 100644
index 000000000..d71be2f09
--- /dev/null
+++ b/include/cppcanvas/renderer.hxx
@@ -0,0 +1,140 @@
+/* -*- 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/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you 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 .
+ */
+
+#ifndef INCLUDED_CPPCANVAS_RENDERER_HXX
+#define INCLUDED_CPPCANVAS_RENDERER_HXX
+
+#include <sal/types.h>
+#include <rtl/ustring.hxx>
+#include <optional>
+#include <basegfx/matrix/b2dhommatrix.hxx>
+#include <cppcanvas/canvasgraphic.hxx>
+#include <cppcanvas/color.hxx>
+#include <memory>
+
+namespace basegfx
+{
+    class B2DRange;
+}
+
+/* Definition of Renderer interface */
+
+namespace cppcanvas
+{
+
+    class Renderer : public virtual CanvasGraphic
+    {
+    public:
+        /** Render subset of metafile to given canvas
+
+            This method renders the given subset of the content to the
+            associated canvas.
+
+            @param nStartIndex
+            The index of the first action to be rendered (the indices
+            correspond roughly to the action indices of the
+            originating GDIMetaFile. Note, although, that certain
+            actions, e.g. text, accounts for more than one index: a
+            text produces as many addressable indices as it has
+            characters).
+
+            @param nEndIndex
+            The index of the first action _not_ painted anymore,
+            i.e. the action after the last action rendered (the
+            indices correspond roughly to the action indices of the
+            originating GDIMetaFile. Note, although, that certain
+            actions, e.g. text, accounts for more than one index: a
+            text produces as many addressable indices as it has
+            characters).
+
+            @return whether the rendering finished successfully.
+         */
+        virtual bool drawSubset( sal_Int32  nStartIndex,
+                                 sal_Int32  nEndIndex ) const = 0;
+
+        /** Query bounding box of metafile subset
+
+            This method queries the actual bounding box of the given
+            subset, when rendered on the associated canvas.
+
+            @param nStartIndex
+            The index of the first action to be rendered (the indices
+            correspond roughly to the action indices of the
+            originating GDIMetaFile. Note, although, that certain
+            actions, e.g. text, accounts for more than one index: a
+            text produces as many addressable indices as it has
+            characters).
+
+            @param nEndIndex
+            The index of the first action _not_ painted anymore,
+            i.e. the action after the last action rendered (the
+            indices correspond roughly to the action indices of the
+            originating GDIMetaFile. Note, although, that certain
+            actions, e.g. text, accounts for more than one index: a
+            text produces as many addressable indices as it has
+            characters).
+
+            @return the bounding box of the specified subset
+         */
+        virtual ::basegfx::B2DRange getSubsetArea( sal_Int32    nStartIndex,
+                                                   sal_Int32    nEndIndex ) const = 0;
+
+        /** Parameters for the Renderer
+         */
+        struct Parameters
+        {
+            /// Optionally forces the fill color attribute for all actions
+            ::std::optional< IntSRGBA >                  maFillColor;
+
+            /// Optionally forces the line color attribute for all actions
+            ::std::optional< IntSRGBA >                 maLineColor;
+
+            /// Optionally forces the text color attribute for all actions
+            ::std::optional< IntSRGBA >                  maTextColor;
+
+            /// Optionally forces the given fontname for all text actions
+            ::std::optional< OUString >                  maFontName;
+
+            /** Optionally transforms all text output actions with the
+                given matrix (in addition to the overall canvas
+                transformation).
+
+                Note that the matrix given here is applied to the unit
+                rect coordinate system, i.e. the metafile is assumed
+                to be contained in the unit rect.
+             */
+            ::std::optional< ::basegfx::B2DHomMatrix >    maTextTransformation;
+
+            /// Optionally forces the given font weight for all text actions
+            ::std::optional< sal_Int8 >                   maFontWeight;
+
+            /// Optionally forces the given font letter form (italics etc.) for all text actions
+            ::std::optional< sal_Int8 >                   maFontLetterForm;
+
+            /// Optionally forces underlining for all text actions
+            ::std::optional< bool >                       maFontUnderline;
+        };
+    };
+
+    typedef std::shared_ptr< ::cppcanvas::Renderer > RendererSharedPtr;
+}
+
+#endif // INCLUDED_CPPCANVAS_RENDERER_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */