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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_CHART2_SOURCE_VIEW_AXES_VCARTESIANAXIS_HXX
#define INCLUDED_CHART2_SOURCE_VIEW_AXES_VCARTESIANAXIS_HXX
#include "VAxisBase.hxx"
#include <basegfx/vector/b2dvector.hxx>
namespace chart
{
class VCartesianAxis : public VAxisBase
{
// public methods
public:
VCartesianAxis( const AxisProperties& rAxisProperties
, const css::uno::Reference< css::util::XNumberFormatsSupplier >& xNumberFormatsSupplier
, sal_Int32 nDimensionIndex, sal_Int32 nDimensionCount
, PlottingPositionHelper* pPosHelper = nullptr //takes ownership
);
virtual ~VCartesianAxis() override;
virtual void createMaximumLabels() override;
virtual void createLabels() override;
virtual void updatePositions() override;
virtual void createShapes() override;
virtual sal_Int32 estimateMaximumAutoMainIncrementCount() override;
virtual void createAllTickInfos( TickInfoArraysType& rAllTickInfos ) override;
void createAllTickInfosFromComplexCategories( TickInfoArraysType& rAllTickInfos, bool bShiftedPosition );
TickIter* createLabelTickIterator( sal_Int32 nTextLevel );
TickIter* createMaximumLabelTickIterator( sal_Int32 nTextLevel );
sal_Int32 getTextLevelCount() const;
virtual TickFactory* createTickFactory() override;
/**
* Get the value at which the other axis crosses.
*/
double getAxisIntersectionValue() const;
/**
* Get the value at which label line crosses the other axis.
*/
double getLabelLineIntersectionValue() const;
/**
* Get the value at which extra line crosses the other axis.
*
* @return a NaN if the line doesn't cross the other axis, a non-NaN value
* otherwise.
*/
double getExtraLineIntersectionValue() const;
void get2DAxisMainLine(
basegfx::B2DVector& rStart, basegfx::B2DVector& rEnd, AxisLabelAlignment& rLabelAlignment,
double fCrossesOtherAxis ) const;
//Layout interface for cartesian axes:
//the returned value describes the minimum size that is necessary
//for the text labels in the direction orthogonal to the axis
//(for an y-axis a width is returned; in case of an x-axis the value describes a height)
//the return value is measured in screen dimension
//As an example the MinimumOrthogonalSize of an x-axis equals the
//Font Height if the label properties allow for labels parallel to the axis.
// sal_Int32 calculateMinimumOrthogonalSize( /*... parallel...*/ );
//Minimum->Preferred
//returns true if the MinimumOrthogonalSize can be calculated
//with the creation of at most one text shape
//(this is e.g. true if the parameters allow for labels parallel to the axis.)
// sal_bool canQuicklyCalculateMinimumOrthogonalSize();
struct ScreenPosAndLogicPos
{
double fLogicX;
double fLogicY;
double fLogicZ;
::basegfx::B2DVector aScreenPos;
};
private: //methods
/**
* Go through all tick label positions and decide which labels to display
* based on the text shape geometry, overlap setting, tick interval,
* auto-stagger setting etc.
*
* When the auto-stagger setting is on, try to avoid overlaps by
* staggering labels or set the labels at an angle. This method may
* change the axis label properties especially when the auto staggering is
* performed. But the screen label positions will not be shifted in this
* method; it will be done in the doStaggeringOfLabels method.
*
* @return true if the text shapes have been successfully created,
* otherwise false. Returning false means the AxisLabelProperties
* have changed during the call, and the caller needs to call this
* method once again to get the text shapes created.
*/
bool createTextShapes(
const css::uno::Reference<css::drawing::XShapes >& xTarget,
TickIter& rTickIter, AxisLabelProperties& rAxisLabelProperties,
TickFactory2D const * pTickFactory, sal_Int32 nScreenDistanceBetweenTicks );
/**
* Variant of createTextShapes where none of auto-staggering and
* link-breaking are allowed in case of overlaps. Overlaps of text shapes
* are to be resolved only by adjusting the label tick interval.
*/
bool createTextShapesSimple(
const css::uno::Reference<css::drawing::XShapes >& xTarget,
TickIter& rTickIter, AxisLabelProperties& rAxisLabelProperties,
TickFactory2D const * pTickFactory );
void createTickMarkLineShapes( TickInfoArrayType& rTickInfos, const TickmarkProperties& rTickmarkProperties, TickFactory2D const & rTickFactory2D, bool bOnlyAtLabels );
TickFactory2D* createTickFactory2D();
void hideIdenticalScreenValues( TickInfoArraysType& rTickInfos ) const;
/**
* Shift the screen positions of the tick labels according to the stagger
* settings. Final stagger setting is decided during the createTextShapes
* call, but this method does the physical shifting of the label
* positions based on the final stagger setting.
*/
void doStaggeringOfLabels( const AxisLabelProperties& rAxisLabelProperties
, TickFactory2D const * pTickFactory2D );
/**
* @return true if we can break a single line label text into multiple
* lines for better fitting, otherwise false.
*/
bool isBreakOfLabelsAllowed( const AxisLabelProperties& rAxisLabelProperties, bool bIsHorizontalAxis ) const;
::basegfx::B2DVector getScreenPosition( double fLogicX, double fLogicY, double fLogicZ ) const;
ScreenPosAndLogicPos getScreenPosAndLogicPos( double fLogicX, double fLogicY, double fLogicZ ) const;
};
} //namespace chart
#endif
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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