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Diffstat (limited to 'chart2/source/view/axes/VCartesianAxis.hxx')
| -rw-r--r-- | chart2/source/view/axes/VCartesianAxis.hxx | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/chart2/source/view/axes/VCartesianAxis.hxx b/chart2/source/view/axes/VCartesianAxis.hxx new file mode 100644 index 000000000..1c020bc41 --- /dev/null +++ b/chart2/source/view/axes/VCartesianAxis.hxx @@ -0,0 +1,162 @@ +/* -*- 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, bool bIsVerticalAxis ) 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: */ |