Moved app/ to glabels/.
This commit is contained in:
Jim Evins
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/* SimplePreview.cpp
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*
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* Copyright (C) 2013 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 "SimplePreview.h"
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#include <QGraphicsRectItem>
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#include <QGraphicsDropShadowEffect>
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#include <iostream>
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//
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// Private Configuration Data
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//
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namespace
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{
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const QColor paperColor( 255, 255, 255 );
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const QColor paperOutlineColor( 0, 0, 0 );
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const double paperOutlineWidthPixels = 1;
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const QColor shadowColor( 64, 64, 64 );
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const double shadowOffsetPixels = 3;
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const double shadowRadiusPixels = 12;
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const QColor labelColor( 255, 255, 255 );
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const QColor labelOutlineColor( 128, 128, 255 );
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const double labelOutlineWidthPixels = 2;
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const QColor arrowColor( 192, 192, 255, 128 );
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const double arrowScale = 0.35;
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const QColor upColor( 192, 192, 255, 128 );
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const double upScale = 0.15;
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const QString upFontFamily( "Sans" );
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}
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namespace glabels
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{
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///
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/// Constructor
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///
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SimplePreview::SimplePreview( QWidget *parent = 0 )
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: mScale(1), mTmplate(NULL), mRotateFlag(false), QGraphicsView(parent)
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{
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mScene = new QGraphicsScene();
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setScene( mScene );
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setAttribute(Qt::WA_TranslucentBackground);
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viewport()->setAutoFillBackground(false);
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setFrameStyle( QFrame::NoFrame );
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setRenderHints( QPainter::Antialiasing );
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}
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///
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/// Template Property Setter
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///
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void SimplePreview::setTemplate( const libglabels::Template *tmplate )
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{
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mTmplate = tmplate;
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update();
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}
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///
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/// Rotate Property Setter
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///
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void SimplePreview::setRotate( bool rotateFlag )
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{
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mRotateFlag = rotateFlag;
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update();
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}
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///
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/// Update View
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///
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void SimplePreview::update()
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{
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clearScene();
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if ( mTmplate != NULL )
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{
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// Set scene up with a 5% margin around paper
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double x = -0.05 * mTmplate->pageWidth();
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double y = -0.05 * mTmplate->pageHeight();
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double w = 1.10 * mTmplate->pageWidth();
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double h = 1.10 * mTmplate->pageHeight();
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mScene->setSceneRect( x, y, w, h );
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fitInView( x, y, w, h, Qt::KeepAspectRatio );
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mScale = matrix().m11();
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drawPaper( mTmplate->pageWidth(), mTmplate->pageHeight() );
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drawLabels();
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drawArrow();
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}
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}
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///
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/// Clear View
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///
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void SimplePreview::clearScene()
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{
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foreach ( QGraphicsItem *item, mScene->items() )
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{
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mScene->removeItem( item );
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delete item;
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}
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}
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///
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/// Draw Paper
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///
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void SimplePreview::drawPaper( double pw, double ph )
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{
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QGraphicsDropShadowEffect *shadowEffect = new QGraphicsDropShadowEffect();
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shadowEffect->setColor( shadowColor );
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shadowEffect->setOffset( shadowOffsetPixels );
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shadowEffect->setBlurRadius( shadowRadiusPixels );
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QBrush brush( paperColor );
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QPen pen( paperOutlineColor );
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pen.setWidthF( paperOutlineWidthPixels / mScale );
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QGraphicsRectItem *pageItem = new QGraphicsRectItem( 0, 0, pw, ph );
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pageItem->setBrush( brush );
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pageItem->setPen( pen );
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pageItem->setGraphicsEffect( shadowEffect );
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mScene->addItem( pageItem );
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}
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///
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/// Draw Labels on Paper
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///
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void SimplePreview::drawLabels()
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{
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libglabels::Frame *frame = mTmplate->frames().first();
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foreach (libglabels::Point origin, frame->getOrigins() )
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{
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drawLabel( origin.x(), origin.y(), frame->path() );
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}
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}
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///
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/// Draw a Single Label at x,y
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///
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void SimplePreview::drawLabel( double x, double y, const QPainterPath &path )
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{
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QBrush brush( labelColor );
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QPen pen( labelOutlineColor );
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pen.setWidthF( labelOutlineWidthPixels / mScale );
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QGraphicsPathItem *labelItem = new QGraphicsPathItem( path );
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labelItem->setBrush( brush );
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labelItem->setPen( pen );
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labelItem->setPos( x, y );
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mScene->addItem( labelItem );
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}
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///
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/// Draw Arrow Indicating Top of First Label
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///
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void SimplePreview::drawArrow()
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{
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libglabels::Frame *frame = mTmplate->frames().first();
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double w = frame->w();
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double h = frame->h();
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double min = ( w < h ) ? w : h;
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QPen pen( arrowColor );
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pen.setWidthF( 0.25*min*arrowScale );
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pen.setCapStyle( Qt::FlatCap );
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pen.setJoinStyle( Qt::MiterJoin );
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QBrush brush( upColor );
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libglabels::Point origin = frame->getOrigins().first();
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double x0 = origin.x();
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double y0 = origin.y();
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QPainterPath path;
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path.moveTo( 0, min*arrowScale/3 );
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path.lineTo( 0, -min*arrowScale );
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path.moveTo( -min*arrowScale/2, -min*arrowScale/2 );
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path.lineTo( 0, -min*arrowScale );
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path.lineTo( min*arrowScale/2, -min*arrowScale/2 );
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QGraphicsPathItem *arrowItem = new QGraphicsPathItem( path );
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arrowItem->setPen( pen );
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arrowItem->setPos( x0+w/2, y0+h/2 );
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if ( mRotateFlag )
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{
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arrowItem->setRotation( 90 );
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}
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QGraphicsSimpleTextItem *upItem = new QGraphicsSimpleTextItem( tr("Up") );
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upItem->setBrush( brush );
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upItem->setFont( QFont( upFontFamily, min*upScale, QFont::Bold ) );
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upItem->setPos( x0+w/2, y0+h/2 );
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QRectF rect = upItem->boundingRect();
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if ( mRotateFlag )
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{
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upItem->setPos( upItem->x()-min/8, upItem->y()-rect.width()/2 );
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upItem->setRotation( 90 );
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}
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else
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{
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upItem->setPos( upItem->x()-rect.width()/2, upItem->y()+min/8 );
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}
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mScene->addItem( arrowItem );
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mScene->addItem( upItem );
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}
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}
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