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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-15 05:54:39 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-15 05:54:39 +0000
commit267c6f2ac71f92999e969232431ba04678e7437e (patch)
tree358c9467650e1d0a1d7227a21dac2e3d08b622b2 /include/cppcanvas/renderer.hxx
parentInitial commit. (diff)
downloadlibreoffice-267c6f2ac71f92999e969232431ba04678e7437e.tar.xz
libreoffice-267c6f2ac71f92999e969232431ba04678e7437e.zip
Adding upstream version 4:24.2.0.upstream/4%24.2.0
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'include/cppcanvas/renderer.hxx')
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+/* -*- 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: */