Jim Evins
696 lines
14 KiB
C++
696 lines
14 KiB
C++
/* LabelModelTextObject.cpp
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*
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* Copyright (C) 2013-2016 Jim Evins <evins@snaught.com>
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*
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* This file is part of gLabels-qt.
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*
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* gLabels-qt is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* gLabels-qt is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with gLabels-qt. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "LabelModelTextObject.h"
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#include "Size.h"
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#include <QBrush>
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#include <QPen>
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#include <QTextDocument>
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#include <QTextBlock>
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#include <QRegularExpression>
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#include <QtDebug>
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namespace glabels
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{
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//
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// Private
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//
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namespace
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{
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const double marginPts = 3;
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}
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///
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/// Constructor
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///
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LabelModelTextObject::LabelModelTextObject()
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{
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mOutline = new Outline( this );
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mHandles << new HandleNorthWest( this );
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mHandles << new HandleNorth( this );
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mHandles << new HandleNorthEast( this );
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mHandles << new HandleEast( this );
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mHandles << new HandleSouthEast( this );
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mHandles << new HandleSouth( this );
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mHandles << new HandleSouthWest( this );
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mHandles << new HandleWest( this );
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mText = "";
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mFontFamily = "Sans";
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mFontSize = 10;
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mFontWeight = QFont::Normal;
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mFontItalicFlag = false;
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mFontUnderlineFlag = false;
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mTextColorNode = ColorNode( QColor( 0, 0, 0 ) );
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mTextHAlign = Qt::AlignLeft;
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mTextVAlign = Qt::AlignTop;
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mTextLineSpacing = 1;
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}
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///
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/// Copy constructor
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///
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LabelModelTextObject::LabelModelTextObject( const LabelModelTextObject* object )
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: LabelModelObject(object)
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{
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mText = object->mText;
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mFontFamily = object->mFontFamily;
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mFontSize = object->mFontSize;
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mFontWeight = object->mFontWeight;
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mFontItalicFlag = object->mFontItalicFlag;
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mFontUnderlineFlag = object->mFontUnderlineFlag;
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mTextColorNode = object->mTextColorNode;
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mTextHAlign = object->mTextHAlign;
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mTextVAlign = object->mTextVAlign;
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mTextLineSpacing = object->mTextLineSpacing;
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update(); // Initialize cached editor layouts
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}
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///
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/// Destructor
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///
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LabelModelTextObject::~LabelModelTextObject()
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{
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delete mOutline;
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foreach( Handle* handle, mHandles )
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{
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delete handle;
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}
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mHandles.clear();
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}
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///
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/// Clone
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///
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LabelModelTextObject* LabelModelTextObject::clone() const
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{
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return new LabelModelTextObject( this );
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}
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///
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/// Text Property Getter
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///
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QString LabelModelTextObject::text() const
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{
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return mText;
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}
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///
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/// Text Property Setter
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///
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void LabelModelTextObject::setText( const QString& value )
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{
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if ( mText != value )
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{
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mText = value;
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update();
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emit changed();
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}
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}
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///
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/// FontFamily Property Getter
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///
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QString LabelModelTextObject::fontFamily() const
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{
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return mFontFamily;
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}
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///
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/// FontFamily Property Setter
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///
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void LabelModelTextObject::setFontFamily( const QString& value )
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{
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if ( mFontFamily != value )
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{
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mFontFamily = value;
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update();
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emit changed();
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}
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}
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///
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/// FontSize Property Getter
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///
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double LabelModelTextObject::fontSize() const
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{
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return mFontSize;
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}
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///
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/// FontSize Property Setter
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///
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void LabelModelTextObject::setFontSize( double value )
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{
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if ( mFontSize != value )
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{
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mFontSize = value;
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update();
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emit changed();
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}
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}
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///
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/// FontWeight Property Getter
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///
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QFont::Weight LabelModelTextObject::fontWeight() const
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{
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return mFontWeight;
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}
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///
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/// FontWeight Property Setter
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///
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void LabelModelTextObject::setFontWeight( QFont::Weight value )
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{
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if ( mFontWeight != value )
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{
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mFontWeight = value;
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update();
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emit changed();
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}
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}
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///
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/// FontItalicFlag Property Getter
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///
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bool LabelModelTextObject::fontItalicFlag() const
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{
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return mFontItalicFlag;
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}
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///
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/// FontItalicFlag Property Setter
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///
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void LabelModelTextObject::setFontItalicFlag( bool value )
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{
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if ( mFontItalicFlag != value )
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{
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mFontItalicFlag = value;
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update();
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emit changed();
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}
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}
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///
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/// FontUnderlineFlag Property Getter
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///
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bool LabelModelTextObject::fontUnderlineFlag() const
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{
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return mFontUnderlineFlag;
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}
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///
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/// FontUnderlineFlag Property Setter
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///
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void LabelModelTextObject::setFontUnderlineFlag( bool value )
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{
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if ( mFontUnderlineFlag != value )
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{
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mFontUnderlineFlag = value;
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update();
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emit changed();
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}
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}
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///
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/// Text Color Node Property Getter
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///
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ColorNode LabelModelTextObject::textColorNode() const
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{
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return mTextColorNode;
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}
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///
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/// Text Color Node Property Setter
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///
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void LabelModelTextObject::setTextColorNode( const ColorNode& value )
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{
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if ( mTextColorNode != value )
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{
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mTextColorNode = value;
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update();
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emit changed();
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}
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}
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///
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/// TextHAlign Property Getter
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///
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Qt::Alignment LabelModelTextObject::textHAlign() const
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{
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return mTextHAlign;
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}
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///
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/// TextHAlign Property Setter
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///
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void LabelModelTextObject::setTextHAlign( Qt::Alignment value )
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{
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if ( mTextHAlign != value )
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{
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mTextHAlign = value;
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update();
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emit changed();
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}
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}
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///
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/// TextVAlign Property Getter
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///
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Qt::Alignment LabelModelTextObject::textVAlign() const
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{
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return mTextVAlign;
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}
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///
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/// TextVAlign Property Setter
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///
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void LabelModelTextObject::setTextVAlign( Qt::Alignment value )
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{
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if ( mTextVAlign != value )
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{
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mTextVAlign = value;
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update();
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emit changed();
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}
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}
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///
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/// TextLineSpacing Property Getter
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///
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double LabelModelTextObject::textLineSpacing() const
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{
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return mTextLineSpacing;
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}
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///
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/// TextLineSpacing Property Setter
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///
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void LabelModelTextObject::setTextLineSpacing( double value )
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{
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if ( mTextLineSpacing != value )
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{
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mTextLineSpacing = value;
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update();
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emit changed();
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}
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}
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///
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/// NaturalSize Property Getter
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///
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Size LabelModelTextObject::naturalSize() const
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{
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QFont font;
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font.setFamily( mFontFamily );
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font.setPointSizeF( mFontSize );
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font.setWeight( mFontWeight );
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font.setItalic( mFontItalicFlag );
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font.setUnderline( mFontUnderlineFlag );
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QTextOption textOption;
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textOption.setAlignment( mTextHAlign );
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textOption.setWrapMode( QTextOption::WordWrap );
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QFontMetricsF fontMetrics( font );
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double dy = fontMetrics.lineSpacing() * mTextLineSpacing;
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QString displayText = mText.isEmpty() ? tr("Text") : mText;
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QTextDocument document( displayText );
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// Do layouts
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double x = 0;
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double y = 0;
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QRectF boundingRect;
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for ( int i = 0; i < document.blockCount(); i++ )
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{
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QTextLayout* layout = new QTextLayout( document.findBlockByNumber(i).text() );
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layout->setFont( font );
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layout->setTextOption( textOption );
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layout->setCacheEnabled(true);
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layout->beginLayout();
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for ( QTextLine l = layout->createLine(); l.isValid(); l = layout->createLine() )
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{
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l.setPosition( QPointF( x, y ) );
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y += dy;
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}
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layout->endLayout();
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boundingRect = layout->boundingRect().united( boundingRect );
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}
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return Size( boundingRect.width() + 2*marginPts, boundingRect.height() + 2*marginPts );
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}
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///
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/// Can Text Capability Implementation
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///
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bool LabelModelTextObject::canText()
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{
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return true;
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}
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///
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/// Draw shadow of object
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///
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void LabelModelTextObject::drawShadow( QPainter* painter,
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bool inEditor,
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merge::Record* record ) const
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{
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QColor textColor = mTextColorNode.color( record );
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if ( textColor.alpha() )
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{
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QColor shadowColor = mShadowColorNode.color( record );
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shadowColor.setAlphaF( mShadowOpacity );
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if ( inEditor )
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{
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drawTextInEditor( painter, shadowColor );
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}
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else
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{
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drawText( painter, shadowColor, record );
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}
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}
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}
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///
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/// Draw object itself
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///
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void LabelModelTextObject::drawObject( QPainter* painter,
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bool inEditor,
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merge::Record* record ) const
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{
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QColor textColor = mTextColorNode.color( record );
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if ( inEditor )
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{
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drawTextInEditor( painter, textColor );
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}
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else
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{
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drawText( painter, textColor, record );
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}
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}
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///
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/// Path to test for hover condition
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///
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QPainterPath LabelModelTextObject::hoverPath( double scale ) const
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{
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return mHoverPath;
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}
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///
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/// Size updated
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///
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void LabelModelTextObject::sizeUpdated()
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{
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update();
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}
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///
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/// Update cached information for editor view
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///
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void LabelModelTextObject::update()
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{
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QFont font;
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font.setFamily( mFontFamily );
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font.setPointSizeF( mFontSize );
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font.setWeight( mFontWeight );
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font.setItalic( mFontItalicFlag );
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font.setUnderline( mFontUnderlineFlag );
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QTextOption textOption;
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textOption.setAlignment( mTextHAlign );
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textOption.setWrapMode( QTextOption::WordWrap );
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QFontMetricsF fontMetrics( font );
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double dy = fontMetrics.lineSpacing() * mTextLineSpacing;
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QString displayText = mText.isEmpty() ? tr("Text") : mText;
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QTextDocument document( displayText );
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qDeleteAll( mEditorLayouts );
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mEditorLayouts.clear();
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// Pass #1 -- do initial layouts
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double x = 0;
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double y = 0;
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QRectF boundingRect;
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for ( int i = 0; i < document.blockCount(); i++ )
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{
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QTextLayout* layout = new QTextLayout( document.findBlockByNumber(i).text() );
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layout->setFont( font );
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layout->setTextOption( textOption );
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layout->setCacheEnabled(true);
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layout->beginLayout();
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for ( QTextLine l = layout->createLine(); l.isValid(); l = layout->createLine() )
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{
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l.setLineWidth( mW.pt() - 2*marginPts );
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l.setPosition( QPointF( x, y ) );
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y += dy;
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}
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layout->endLayout();
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mEditorLayouts.append( layout );
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boundingRect = layout->boundingRect().united( boundingRect );
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}
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double h = boundingRect.height();
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// Pass #2 -- adjust layout positions for vertical alignment and create hover path
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x = marginPts;
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switch ( mTextVAlign )
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{
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case Qt::AlignVCenter:
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y = mH.pt()/2 - h/2;
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break;
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case Qt::AlignBottom:
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y = mH.pt() - h - marginPts;
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break;
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default:
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y = marginPts;
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break;
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}
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QPainterPath hoverPath; // new empty hover path
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foreach ( QTextLayout* layout, mEditorLayouts )
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{
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for ( int j = 0; j < layout->lineCount(); j++ )
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{
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QTextLine l = layout->lineAt(j);
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l.setPosition( QPointF( x, y ) );
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y += dy;
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hoverPath.addRect( l.naturalTextRect() ); // add to new hover path
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}
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}
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mHoverPath = hoverPath; // save new hover path
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}
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///
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/// Draw text in editor from cached information
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///
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void LabelModelTextObject::drawTextInEditor( QPainter* painter, const QColor& color ) const
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{
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if ( mText.isEmpty() )
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{
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QColor mutedColor = color;
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mutedColor.setAlphaF( 0.5 * color.alphaF() );
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painter->setPen( QPen( mutedColor ) );
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}
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else
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{
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painter->setPen( QPen( color ) );
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}
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foreach ( QTextLayout* layout, mEditorLayouts )
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{
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layout->draw( painter, QPointF( 0, 0 ) );
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}
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}
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///
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/// Draw text in final printout or preview
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///
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void
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LabelModelTextObject::drawText( QPainter* painter,
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const QColor& color,
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merge::Record* record ) const
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{
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QFont font;
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font.setFamily( mFontFamily );
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font.setPointSizeF( mFontSize );
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font.setWeight( mFontWeight );
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font.setItalic( mFontItalicFlag );
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font.setUnderline( mFontUnderlineFlag );
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QTextOption textOption;
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textOption.setAlignment( mTextHAlign );
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textOption.setWrapMode( QTextOption::WordWrap );
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QFontMetricsF fontMetrics( font );
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double dy = fontMetrics.lineSpacing() * mTextLineSpacing;
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QTextDocument document( expandText( mText, record ) );
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QList<QTextLayout*> layouts;
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// Pass #1 -- do initial layouts
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double x = 0;
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double y = 0;
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QRectF boundingRect;
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for ( int i = 0; i < document.blockCount(); i++ )
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{
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QTextLayout* layout = new QTextLayout( document.findBlockByNumber(i).text() );
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layout->setFont( font );
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layout->setTextOption( textOption );
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layout->setCacheEnabled(true);
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layout->beginLayout();
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for ( QTextLine l = layout->createLine(); l.isValid(); l = layout->createLine() )
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{
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l.setLineWidth( mW.pt() - 2*marginPts );
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l.setPosition( QPointF( x, y ) );
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y += dy;
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}
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layout->endLayout();
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layouts.append( layout );
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boundingRect = layout->boundingRect().united( boundingRect );
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}
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double h = boundingRect.height();
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// Pass #2 -- adjust layout positions for vertical alignment and create hover path
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x = marginPts;
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switch ( mTextVAlign )
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{
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case Qt::AlignVCenter:
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y = mH.pt()/2 - h/2;
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break;
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case Qt::AlignBottom:
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y = mH.pt() - h - marginPts;
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break;
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default:
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y = marginPts;
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break;
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}
|
|
foreach ( QTextLayout* layout, layouts )
|
|
{
|
|
for ( int j = 0; j < layout->lineCount(); j++ )
|
|
{
|
|
QTextLine l = layout->lineAt(j);
|
|
l.setPosition( QPointF( x, y ) );
|
|
y += dy;
|
|
}
|
|
}
|
|
|
|
// Draw layouts
|
|
painter->setPen( QPen( color ) );
|
|
foreach ( QTextLayout* layout, layouts )
|
|
{
|
|
layout->draw( painter, QPointF( 0, 0 ) );
|
|
}
|
|
|
|
// Cleanup
|
|
qDeleteAll( layouts );
|
|
}
|
|
|
|
|
|
///
|
|
/// Expand text by replacing fields with their values from the given record
|
|
///
|
|
QString LabelModelTextObject::expandText( QString text, merge::Record* record ) const
|
|
{
|
|
if ( record )
|
|
{
|
|
foreach ( QString key, record->keys() )
|
|
{
|
|
// Special case: remove line when it contains only an empty field.
|
|
// e.g. an optional ${ADDR2} line. To bypass this case, include
|
|
// whitespace at end of line.
|
|
if ( record->value(key).isEmpty() )
|
|
{
|
|
QStringList v = text.split( '\n' );
|
|
v.removeAll( "${"+key+"}" );
|
|
text = v.join( '\n' );
|
|
}
|
|
|
|
// Nominal case: simple replacement
|
|
text.replace( "${"+key+"}", record->value(key) );
|
|
}
|
|
}
|
|
|
|
return text;
|
|
}
|
|
|
|
} // namespace glabels
|