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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 .
*/
#pragma once
#include <action.hxx>
#include <cppcanvas/canvas.hxx>
class VirtualDevice;
class Size;
namespace basegfx
{
class B2DVector;
class B2DPoint;
}
namespace com::sun::star::rendering
{
struct RenderState;
}
namespace cppcanvas
{
namespace internal
{
struct OutDevState;
}
}
namespace cppcanvastools
{
/** Init render state from OutDevState
This method initializes the given render state object,
sets up the transformation and the clip from the
OutDevState.
*/
void initRenderState( css::rendering::RenderState& renderState,
const ::cppcanvas::internal::OutDevState& outdevState );
/** Calc output offset relative to baseline
The XCanvas API always renders text relative to its
baseline. This method calculates an offset in logical
coordinates, depending on the OutDevState's
textReferencePoint and the font currently set, to offset
the text from the baseline.
@param outdevState
State to take textReferencePoint from
@param rVDev
VDev to obtain font metrics from.
*/
::Size getBaselineOffset( const ::cppcanvas::internal::OutDevState& outdevState,
const VirtualDevice& rVDev );
/** Construct a matrix that converts from logical to pixel
coordinate system.
This method calculates a matrix that approximates the
VirtualDevice's LogicToPixel conversion (disregarding any
offset components, thus the 'linear' in the method name -
the returned matrix is guaranteed to be linear).
@param o_rMatrix
This matrix will receive the calculated transform, and is
also returned from this method.
@return the calculated transformation matrix.
*/
::basegfx::B2DHomMatrix& calcLogic2PixelLinearTransform( ::basegfx::B2DHomMatrix& o_rMatrix,
const VirtualDevice& rVDev );
/** Construct a matrix that converts from logical to pixel
coordinate system.
This method calculates a matrix that approximates the
VirtualDevice's LogicToPixel conversion.
@param o_rMatrix
This matrix will receive the calculated transform, and is
also returned from this method.
@return the calculated transformation matrix.
*/
::basegfx::B2DHomMatrix& calcLogic2PixelAffineTransform( ::basegfx::B2DHomMatrix& o_rMatrix,
const VirtualDevice& rVDev );
/** This method modifies the clip, to cancel the given
transformation.
As the clip is relative to the render state
transformation, offsetting or scaling the render state
must modify the clip, to keep it at the same position
relative to the primitive at hand
@param o_rRenderState
Render state to change the clip in
@param rOutdevState
Input state. Is used to retrieve the original clip from
@param rOffset
The clip is offsetted by the negative of this value.
@param pScaling
The clip is inversely scaled by this value (if given)
@param pRotation
The clip is inversely rotated by this value (if given)
@return true, if the clip has changed, false if not
*/
bool modifyClip( css::rendering::RenderState& o_rRenderState,
const struct ::cppcanvas::internal::OutDevState& rOutdevState,
const ::cppcanvas::CanvasSharedPtr& rCanvas,
const ::basegfx::B2DPoint& rOffset,
const ::basegfx::B2DVector* pScaling,
const double* pRotation );
struct TextLineInfo
{
TextLineInfo( const double& rLineHeight,
const double& rOverlineHeight,
const double& rOverlineOffset,
const double& rUnderlineOffset,
const double& rStrikeoutOffset,
sal_Int8 nOverlineStyle,
sal_Int8 nUnderlineStyle,
sal_Int8 nStrikeoutStyle ) :
mnLineHeight( rLineHeight ),
mnOverlineHeight( rOverlineHeight ),
mnOverlineOffset( rOverlineOffset ),
mnUnderlineOffset( rUnderlineOffset ),
mnStrikeoutOffset( rStrikeoutOffset ),
mnOverlineStyle( nOverlineStyle ),
mnUnderlineStyle( nUnderlineStyle ),
mnStrikeoutStyle( nStrikeoutStyle )
{
}
double mnLineHeight;
double mnOverlineHeight;
double mnOverlineOffset;
double mnUnderlineOffset;
double mnStrikeoutOffset;
sal_Int8 mnOverlineStyle;
sal_Int8 mnUnderlineStyle;
sal_Int8 mnStrikeoutStyle;
};
/** Transform given bounds to device coordinate system.
*/
::basegfx::B2DRange calcDevicePixelBounds( const ::basegfx::B2DRange& rBounds,
const css::rendering::ViewState& viewState,
const css::rendering::RenderState& renderState );
/** Generate text underline/strikeout info struct from OutDev
state.
*/
TextLineInfo createTextLineInfo( const ::VirtualDevice& rVDev,
const ::cppcanvas::internal::OutDevState& rState );
/** Create a poly-polygon representing the given combination
of overline, strikeout and underline.
@param rStartOffset
Offset in X direction, where the underline starts
@param rLineWidth
Width of the line of text to overline/strikeout/underline
@param rTextLineInfo
Common info needed for overline/strikeout/underline generation
*/
::basegfx::B2DPolyPolygon createTextLinesPolyPolygon( const double& rStartOffset,
const double& rLineWidth,
const TextLineInfo& rTextLineInfo );
::basegfx::B2DPolyPolygon createTextLinesPolyPolygon( const ::basegfx::B2DPoint& rStartPos,
const double& rLineWidth,
const TextLineInfo& rTextLineInfo );
void createTextLinesPolyPolygon( const double& rStartOffset,
const double& rLineWidth,
const TextLineInfo& rTextLineInfo,
::basegfx::B2DPolyPolygon& rOverlinePolyPoly,
::basegfx::B2DPolyPolygon& rUnderlinePolyPoly,
::basegfx::B2DPolyPolygon& rStrikeoutPolyPoly );
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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