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FracCell.h
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1// -*- mode: c++; c-file-style: "linux"; c-basic-offset: 2; indent-tabs-mode: nil -*-
2//
3// Copyright (C) 2004-2015 Andrej Vodopivec <andrej.vodopivec@gmail.com>
4// (C) 2014-2016 Gunter Königsmann <wxMaxima@physikbuch.de>
5//
6// This program is free software; you can redistribute it and/or modify
7// it under the terms of the GNU General Public License as published by
8// the Free Software Foundation; either version 2 of the License, or
9// (at your option) any later version.
10//
11// This program is distributed in the hope that it will be useful,
12// but WITHOUT ANY WARRANTY; without even the implied warranty of
13// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14// GNU General Public License for more details.
15//
16//
17// You should have received a copy of the GNU General Public License
18// along with this program; if not, write to the Free Software
19// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20//
21// SPDX-License-Identifier: GPL-2.0+
22
29#ifndef FRACCELL_H
30#define FRACCELL_H
31
32#include <memory>
33#include "Cell.h"
34#include "TextCell.h"
35#include "ParenCell.h"
36
37/* This class represents fractions.
38
39 Fractions can be drawn in 2 ways:
40 - As a 2D fraction (\f$ \frac{a}{b} \f$) if the fraction is narrow enough to fit
41 on the screen, or
42 - as a linear division (\f$ a/b \f$) if it doesn't.
43*/
44class FracCell final : public Cell
45{
46public:
47 FracCell(GroupCell *group, Configuration *config,
48 std::unique_ptr<Cell> &&num, std::unique_ptr<Cell> &&denom);
49 FracCell(GroupCell *group, const FracCell &cell);
50 std::unique_ptr<Cell> Copy(GroupCell *group) const override;
51 const CellTypeInfo &GetInfo() override;
52
53 size_t GetInnerCellCount() const override { return 3; }
54 // cppcheck-suppress objectIndex
55 Cell *GetInnerCell(size_t index) const override { return (&m_displayedNum)[index]; }
56
58 enum FracType : int8_t
59 {
60 FC_NORMAL,
61 FC_CHOOSE,
62 FC_DIFF
63 };
64
65 void Recalculate(AFontSize fontsize) override;
66
67 void Draw(wxPoint point, wxDC *dc, wxDC *antialiassingDC) override;
68
69 void SetFracStyle(FracType style);
70
72 bool IsOperator() const override { return true; }
73
74 wxString ToMathML() const override;
75 wxString ToMatlab() const override;
76 wxString ToOMML() const override;
77 wxString ToString() const override;
78 wxString ToTeX() const override;
79 wxString ToXML() const override;
80
82 void SetIsExponent() override;
83
84 bool BreakUp() override;
85
86 void SetupBreakUps();
87
88 void SetNextToDraw(Cell *next) override;
89
90private:
93 void MakeDivideCell();
94
96 Cell *Num() const { return m_numParenthesis->GetInner(); }
98 Cell *Denom() const { return m_denomParenthesis->GetInner(); }
99
101 std::unique_ptr<ParenCell> const m_numParenthesis;
103 std::unique_ptr<ParenCell> const m_denomParenthesis;
105 std::unique_ptr<TextCell> m_divideOwner;
106
107 // The pointers below point to inner cells and must be kept contiguous.
108 // ** This is the draw list order. All pointers must be the same:
109 // ** either Cell * or std::unique_ptr<Cell>. NO OTHER TYPES are allowed.
111 Cell* m_displayedNum = {};
113 Cell* m_divide = {};
115 Cell* m_displayedDenom = {};
116 // The pointers above point to inner cells and must be kept contiguous.
117
119 int m_protrusion = 0;
126 int m_horizontalGapLeft = 0;
133 int m_horizontalGapRight = 0;
134
136 FracType m_fracStyle = FC_NORMAL;
137
138//** Bitfield objects (1 bytes)
139//**
140 void InitBitFields_FracCell()
141 { // Keep the initialization order below same as the order
142 // of bit fields in this class!
143 m_inExponent = false;
144 }
146 bool m_inExponent : 1 /* InitBitFields_FracCell */;
147};
148
149#endif // FRACCELL_H
The definition of the base class of all cells the worksheet consists of.
This file declares the class ParenCell.
A Type-Safe Fixed-Point Font Size.
Definition: FontAttribs.h:98
A class that carries information about the type of a cell.
Definition: Cell.h:93
The base class all cell types the worksheet can consist of are derived from.
Definition: Cell.h:142
The configuration storage for the current worksheet.
Definition: Configuration.h:85
Definition: FracCell.h:45
wxString ToTeX() const override
Convert this cell to its LaTeX representation.
Definition: FracCell.cpp:252
bool IsOperator() const override
Answers the question if this is an operator by returning "true".
Definition: FracCell.h:72
wxString ToOMML() const override
Returns the cell's representation as OMML.
Definition: FracCell.cpp:271
Cell * GetInnerCell(size_t index) const override
Retrieve an inner cell with given index which must be less than GetInnerCellCount.
Definition: FracCell.h:55
wxString ToMatlab() const override
Convert this cell to its Matlab representation.
Definition: FracCell.cpp:219
void SetIsExponent() override
Fractions in exponents are shown in their linear form.
Definition: FracCell.cpp:290
void Recalculate(AFontSize fontsize) override
Recalculate the size of the cell and the difference between top and center.
Definition: FracCell.cpp:86
const CellTypeInfo & GetInfo() override
Returns the information about this cell's type.
wxString ToMathML() const override
Convert this cell to a representation fit for saving in a .wxmx file.
Definition: FracCell.cpp:266
FracType
All types of fractions we support.
Definition: FracCell.h:59
wxString ToXML() const override
Convert this cell to a representation fit for saving in a .wxmx file.
Definition: FracCell.cpp:276
wxString ToString() const override
Returns the cell's representation as a string.
Definition: FracCell.cpp:184
std::unique_ptr< Cell > Copy(GroupCell *group) const override
Create a copy of this cell.
bool BreakUp() override
Try to split this command into lines to make it fit on the screen.
Definition: FracCell.cpp:313
void Draw(wxPoint point, wxDC *dc, wxDC *antialiassingDC) override
Draw this cell.
Definition: FracCell.cpp:137
size_t GetInnerCellCount() const override
The number of inner cells - for use by the iterators.
Definition: FracCell.h:53
void SetNextToDraw(Cell *next) override
Tells this cell which one should be the next cell to be drawn.
Definition: FracCell.cpp:331
A cell grouping input (and, if there is one, also the output) cell to a foldable item.
Definition: GroupCell.h:74