Created skeletal rich print preview widget.

2015-08-21 00:43:45 -04:00
parent a345acb90f
commit 3bb129b1d1
9 changed files with 280 additions and 12 deletions
@@ -0,0 +1,175 @@
+/*  Preview.cpp
+ *
+ *  Copyright (C) 2013  Jim Evins <evins@snaught.com>
+ *
+ *  This file is part of gLabels-qt.
+ *
+ *  gLabels-qt is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  gLabels-qt is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with gLabels-qt.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "Preview.h"
+
+#include "LabelModel.h"
+
+#include <QGraphicsRectItem>
+#include <QGraphicsDropShadowEffect>
+#include <QtDebug>
+
+
+//
+// Private Configuration Data
+//
+namespace
+{
+        const QColor  paperColor( 255, 255, 255 );
+        const QColor  paperOutlineColor( 0, 0, 0 );
+	const double  paperOutlineWidthPixels = 1;
+
+        const QColor  shadowColor( 64, 64, 64 );
+	const double  shadowOffsetPixels = 3;
+	const double  shadowRadiusPixels = 12;
+
+        const QColor  labelColor( 255, 255, 255 );
+        const QColor  labelOutlineColor( 215, 215, 215 );
+	const double  labelOutlineWidthPixels = 1;
+}
+
+
+namespace glabels
+{
+
+	///
+	/// Constructor
+	///
+	Preview::Preview( QWidget *parent )
+		: mModel(0), QGraphicsView(parent)
+	{
+		mScene = new QGraphicsScene();
+		setScene( mScene );
+
+		setAttribute(Qt::WA_TranslucentBackground);
+		viewport()->setAutoFillBackground(false);
+
+		setFrameStyle( QFrame::NoFrame );
+		setRenderHints( QPainter::Antialiasing );
+	}
+
+
+	///
+	/// Set model
+	///
+	void Preview::setModel( const LabelModel* model )
+	{
+		mModel = model;
+
+		clearScene();
+
+		if ( mModel != NULL )
+		{
+			// Set scene up with a 5% margin around paper
+			double x = -0.05 * mModel->tmplate()->pageWidth();
+			double y = -0.05 * mModel->tmplate()->pageHeight();
+			double w = 1.10 * mModel->tmplate()->pageWidth();
+			double h = 1.10 * mModel->tmplate()->pageHeight();
+
+			mScene->setSceneRect( x, y, w, h );
+			fitInView( mScene->sceneRect(), Qt::KeepAspectRatio );
+
+			drawPaper( mModel->tmplate()->pageWidth(), mModel->tmplate()->pageHeight() );
+			drawLabels();
+		}
+	}
+
+
+	///
+	/// Resize Event Handler
+	///
+	void Preview::resizeEvent( QResizeEvent* event )
+	{
+		fitInView( mScene->sceneRect(), Qt::KeepAspectRatio );
+	}
+
+
+	///
+	/// Clear View
+	///
+	void Preview::clearScene()
+	{
+		foreach ( QGraphicsItem *item, mScene->items() )
+		{
+			mScene->removeItem( item );
+			delete item;
+		}
+	}
+
+
+	///
+	/// Draw Paper
+	///
+	void Preview::drawPaper( double pw, double ph )
+	{
+		QGraphicsDropShadowEffect *shadowEffect = new QGraphicsDropShadowEffect();
+		shadowEffect->setColor( shadowColor );
+		shadowEffect->setOffset( shadowOffsetPixels );
+		shadowEffect->setBlurRadius( shadowRadiusPixels );
+
+		QBrush brush( paperColor );
+		QPen pen( paperOutlineColor );
+		pen.setCosmetic( true );
+		pen.setWidthF( paperOutlineWidthPixels );
+
+		QGraphicsRectItem *pageItem = new QGraphicsRectItem( 0, 0, pw, ph );
+		pageItem->setBrush( brush );
+		pageItem->setPen( pen );
+		pageItem->setGraphicsEffect( shadowEffect );
+				
+		mScene->addItem( pageItem );
+	}
+
+
+	///
+	/// Draw Labels on Paper
+	///
+	void Preview::drawLabels()
+	{
+		libglabels::Frame *frame = mModel->tmplate()->frames().first();
+
+		foreach (libglabels::Point origin, frame->getOrigins() )
+		{
+			drawLabel( origin.x(), origin.y(), frame->path() );
+		}
+	}
+
+
+	///
+	/// Draw a Single Label at x,y
+	///
+	void Preview::drawLabel( double x, double y, const QPainterPath &path )
+	{
+		QBrush brush( labelColor );
+		QPen pen( labelOutlineColor );
+		pen.setStyle( Qt::DotLine );
+		pen.setCosmetic( true );
+		pen.setWidthF( labelOutlineWidthPixels );
+
+		QGraphicsPathItem *labelItem  = new QGraphicsPathItem( path );
+		labelItem->setBrush( brush );
+		labelItem->setPen( pen );
+		labelItem->setPos( x, y );
+
+		mScene->addItem( labelItem );
+	}
+
+
+}