Jim Evins
139 lines
3.5 KiB
C++
139 lines
3.5 KiB
C++
/* 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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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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}
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namespace gLabels
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{
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SimplePreview::SimplePreview( QWidget *parent = 0 ) : 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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void SimplePreview::setTemplate( const libglabels::Template *tmplate )
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{
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clearScene();
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if ( tmplate != 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 * tmplate->pageWidth();
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double y = -0.05 * tmplate->pageHeight();
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double w = 1.10 * tmplate->pageWidth();
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double h = 1.10 * tmplate->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( tmplate->pageWidth(), tmplate->pageHeight() );
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drawLabels( tmplate );
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}
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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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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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void SimplePreview::drawLabels( const libglabels::Template *tmplate )
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{
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libglabels::Frame *frame = tmplate->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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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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