370 lines
14 KiB
C++
370 lines
14 KiB
C++
//=============================================================================
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// MuseScore
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// Music Composition & Notation
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//
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// Copyright (C) 2014 Werner Schweer
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//
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License version 2
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// as published by the Free Software Foundation and appearing in
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// the file LICENCE.GPL
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//=============================================================================
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#ifndef __TEXTBASE_H__
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#define __TEXTBASE_H__
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#include "element.h"
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#include "property.h"
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#include "style.h"
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namespace Ms {
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class MuseScoreView;
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struct SymCode;
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class TextBase;
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class TextBlock;
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class ChangeText;
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//---------------------------------------------------------
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// FrameType
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//---------------------------------------------------------
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enum class FrameType : char {
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NO_FRAME, SQUARE, CIRCLE
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};
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//---------------------------------------------------------
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// VerticalAlignment
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//---------------------------------------------------------
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enum class VerticalAlignment : char {
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AlignNormal, AlignSuperScript, AlignSubScript
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};
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//---------------------------------------------------------
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// FormatId
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//---------------------------------------------------------
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enum class FormatId : char {
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Bold, Italic, Underline, Valign, FontSize, FontFamily
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};
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//---------------------------------------------------------
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// CharFormat
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//---------------------------------------------------------
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class CharFormat {
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bool _bold { false };
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bool _italic { false };
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bool _underline { false };
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bool _preedit { false };
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VerticalAlignment _valign { VerticalAlignment::AlignNormal };
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qreal _fontSize { 12.0 };
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QString _fontFamily;
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public:
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CharFormat() {}
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bool operator==(const CharFormat&) const;
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bool bold() const { return _bold; }
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bool italic() const { return _italic; }
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bool underline() const { return _underline; }
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bool preedit() const { return _preedit; }
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VerticalAlignment valign() const { return _valign; }
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qreal fontSize() const { return _fontSize; }
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QString fontFamily() const { return _fontFamily; }
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void setBold(bool val) { _bold = val; }
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void setItalic(bool val) { _italic = val; }
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void setUnderline(bool val) { _underline = val; }
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void setPreedit(bool val) { _preedit = val; }
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void setValign(VerticalAlignment val) { _valign = val; }
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void setFontSize(qreal val) { Q_ASSERT(val > 0.0); _fontSize = val; }
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void setFontFamily(const QString& val) { _fontFamily = val; }
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void setFormat(FormatId, QVariant);
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};
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//---------------------------------------------------------
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// TextCursor
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// Contains current position and start of selection
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// during editing.
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//---------------------------------------------------------
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class TextCursor {
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TextBase* _text;
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CharFormat _format;
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int _row { 0 };
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int _column { 0 };
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int _selectLine { 0 }; // start of selection
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int _selectColumn { 0 };
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public:
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TextCursor(TextBase* t) : _text(t) {}
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TextBase* text() const { return _text; }
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bool hasSelection() const { return (_selectLine != _row) || (_selectColumn != _column); }
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void clearSelection();
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CharFormat* format() { return &_format; }
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const CharFormat* format() const { return &_format; }
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void setFormat(const CharFormat& f) { _format = f; }
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int row() const { return _row; }
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int column() const { return _column; }
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int selectLine() const { return _selectLine; }
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int selectColumn() const { return _selectColumn; }
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void setRow(int val) { _row = val; }
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void setColumn(int val) { _column = val; }
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void setSelectLine(int val) { _selectLine = val; }
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void setSelectColumn(int val) { _selectColumn = val; }
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int columns() const;
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void init();
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TextBlock& curLine() const;
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QRectF cursorRect() const;
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bool movePosition(QTextCursor::MoveOperation op, QTextCursor::MoveMode mode = QTextCursor::MoveAnchor, int count = 1);
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void moveCursorToEnd() { movePosition(QTextCursor::End); }
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void moveCursorToStart() { movePosition(QTextCursor::Start); }
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QChar currentCharacter() const;
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bool set(const QPointF& p, QTextCursor::MoveMode mode = QTextCursor::MoveAnchor);
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QString selectedText() const;
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void updateCursorFormat();
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void setFormat(FormatId, QVariant);
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void changeSelectionFormat(FormatId id, QVariant val);
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};
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//---------------------------------------------------------
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// TextFragment
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// contains a styled text
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//---------------------------------------------------------
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class TextFragment {
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public:
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mutable CharFormat format;
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QPointF pos; // y is relative to TextBlock->y()
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mutable QString text;
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bool operator ==(const TextFragment& f) const;
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TextFragment();
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TextFragment(const QString& s);
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TextFragment(TextCursor*, const QString&);
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TextFragment split(int column);
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void draw(QPainter*, const TextBase*) const;
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QFont font(const TextBase*) const;
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int columns() const;
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void changeFormat(FormatId id, QVariant data);
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};
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//---------------------------------------------------------
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// TextBlock
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// represents a block of formatted text
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//---------------------------------------------------------
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class TextBlock {
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QList<TextFragment> _fragments;
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qreal _y = 0;
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qreal _lineSpacing;
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QRectF _bbox;
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bool _eol = false;
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void simplify();
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public:
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TextBlock() {}
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bool operator ==(const TextBlock& x) { return _fragments == x._fragments; }
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bool operator !=(const TextBlock& x) { return _fragments != x._fragments; }
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void draw(QPainter*, const TextBase*) const;
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void layout(TextBase*);
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const QList<TextFragment>& fragments() const { return _fragments; }
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QList<TextFragment>& fragments() { return _fragments; }
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const QRectF& boundingRect() const { return _bbox; }
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QRectF boundingRect(int col1, int col2, const TextBase*) const;
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int columns() const;
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void insert(TextCursor*, const QString&);
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QString remove(int column);
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QString remove(int start, int n);
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int column(qreal x, TextBase*) const;
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TextBlock split(int column);
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qreal xpos(int col, const TextBase*) const;
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const CharFormat* formatAt(int) const;
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const TextFragment* fragment(int col) const;
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QList<TextFragment>::iterator fragment(int column, int* rcol, int* ridx);
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qreal y() const { return _y; }
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void setY(qreal val) { _y = val; }
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qreal lineSpacing() const { return _lineSpacing; }
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QString text(int, int) const;
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bool eol() const { return _eol; }
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void setEol(bool val) { _eol = val; }
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void changeFormat(FormatId, QVariant val, int start, int n);
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};
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//---------------------------------------------------------
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// TextBase
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//---------------------------------------------------------
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class TextBase : public Element {
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// sorted by size to allow for most compact memory layout
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M_PROPERTY(bool, bold, setBold)
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M_PROPERTY(bool, italic, setItalic)
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M_PROPERTY(bool, underline, setUnderline)
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M_PROPERTY(Align, align, setAlign)
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M_PROPERTY(FrameType, frameType, setFrameType)
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M_PROPERTY(QString, family, setFamily)
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M_PROPERTY(qreal, size, setSize)
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M_PROPERTY(QColor, bgColor, setBgColor)
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M_PROPERTY(QColor, frameColor, setFrameColor)
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M_PROPERTY(Spatium, frameWidth, setFrameWidth)
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M_PROPERTY(Spatium, paddingWidth, setPaddingWidth)
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M_PROPERTY(int, frameRound, setFrameRound)
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// there are two representations of text; only one
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// might be valid and the other can be constructed from it
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QString _text;
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QList<TextBlock> _layout;
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bool textInvalid { true };
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Tid _tid; // text style id
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QString preEdit; // move to EditData?
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bool _layoutToParentWidth { false };
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int hexState { -1 };
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void drawSelection(QPainter*, const QRectF&) const;
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void insert(TextCursor*, uint code);
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void genText();
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virtual int getPropertyFlagsIdx(Pid id) const override;
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protected:
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bool layoutInvalid { true };
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QColor textColor() const;
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QRectF frame; // calculated in layout()
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void layoutFrame();
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void layoutEdit();
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void createLayout();
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void insertSym(EditData& ed, SymId id);
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public:
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TextBase(Score* = 0, Tid tid = Tid::DEFAULT, ElementFlags = ElementFlag::NOTHING);
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TextBase(Score*, ElementFlags);
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TextBase(const TextBase&);
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virtual bool mousePress(EditData&) override;
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Text &operator=(const Text&) = delete;
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virtual void draw(QPainter*) const override;
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virtual void drawEditMode(QPainter* p, EditData& ed) override;
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void setPlainText(const QString&);
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void setXmlText(const QString&);
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QString xmlText() const;
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QString plainText() const;
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void insertText(EditData&, const QString&);
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virtual void layout() override;
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virtual void layout1();
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qreal lineSpacing() const;
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qreal lineHeight() const;
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virtual qreal baseLine() const override;
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bool empty() const { return xmlText().isEmpty(); }
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void clear() { setXmlText(QString()); }
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bool layoutToParentWidth() const { return _layoutToParentWidth; }
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void setLayoutToParentWidth(bool v) { _layoutToParentWidth = v; }
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virtual void startEdit(EditData&) override;
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virtual bool edit(EditData&) override;
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virtual void editCut(EditData&) override;
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virtual void editCopy(EditData&) override;
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virtual void endEdit(EditData&) override;
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void movePosition(EditData&, QTextCursor::MoveOperation);
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bool deleteSelectedText(EditData&);
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void selectAll(TextCursor*);
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virtual void write(XmlWriter& xml) const override;
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virtual void read(XmlReader&) override;
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virtual void writeProperties(XmlWriter& xml) const { writeProperties(xml, true, true); }
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void writeProperties(XmlWriter& xml, bool writeText) const { writeProperties(xml, writeText, true); }
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void writeProperties(XmlWriter&, bool, bool) const;
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bool readProperties(XmlReader&);
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virtual void paste(EditData&);
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QRectF pageRectangle() const;
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void dragTo(EditData&);
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virtual QLineF dragAnchor() const override;
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virtual bool acceptDrop(EditData&) const override;
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virtual Element* drop(EditData&) override;
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friend class TextBlock;
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friend class TextFragment;
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QString convertFromHtml(const QString& ss) const;
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static QString convertToHtml(const QString&, const TextStyle&);
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static QString tagEscape(QString s);
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static QString unEscape(QString s);
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static QString escape(QString s);
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void undoSetText(const QString& s) { undoChangeProperty(Pid::TEXT, s); }
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virtual QString accessibleInfo() const override;
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virtual QString screenReaderInfo() const override;
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virtual int subtype() const;
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virtual QString subtypeName() const;
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QList<TextFragment> fragmentList() const; // for MusicXML formatted export
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static bool validateText(QString& s);
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bool inHexState() const { return hexState >= 0; }
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void endHexState(EditData&);
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void inputTransition(EditData&, QInputMethodEvent*);
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QFont font() const;
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QFontMetricsF fontMetrics() const;
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virtual QVariant getProperty(Pid propertyId) const override;
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virtual bool setProperty(Pid propertyId, const QVariant& v) override;
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virtual QVariant propertyDefault(Pid id) const override;
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virtual Sid getPropertyStyle(Pid) const;
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virtual void styleChanged();
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void editInsertText(TextCursor*, const QString&);
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TextCursor* cursor(const EditData&);
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const TextBlock& textBlock(int line) const { return _layout[line]; }
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TextBlock& textBlock(int line) { return _layout[line]; }
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QList<TextBlock>& textBlockList() { return _layout; }
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int rows() const { return _layout.size(); }
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void setTextInvalid() { textInvalid = true; };
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bool isTextInvalid() const { return textInvalid; }
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bool isLayoutInvalid() const { return layoutInvalid; }
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// helper functions
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bool hasFrame() const { return _frameType != FrameType::NO_FRAME; }
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bool circle() const { return _frameType == FrameType::CIRCLE; }
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bool square() const { return _frameType == FrameType::SQUARE; }
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Tid tid() const { return _tid; }
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void setTid(Tid id) { _tid = id; }
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void initTid(Tid id);
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virtual void initElementStyle(const ElementStyle*) override;
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friend class TextCursor;
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};
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} // namespace Ms
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#endif
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