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Improvements to placeholder barcode rendering in editor.

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This commit is contained in:
Jim Evins
2017-05-13 20:25:32 -04:00
parent 446d580f13
commit 629c32b90f
3 changed files with 72 additions and 12 deletions
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glabels/LabelModelBarcodeObject.cpp
+69 -10
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@@ -42,7 +42,7 @@ namespace glabels
//
namespace
{
const QColor emptyFillColor = QColor( 128, 128, 128, 128 );
const QColor fillColor = QColor( 224, 224, 224, 255 );
const Distance pad = Distance::pt(4);
const Distance minW = Distance::pt(18);
const Distance minH = Distance::pt(18);
@@ -73,6 +73,7 @@ namespace glabels
mBcColorNode = ColorNode( Qt::black );
mEditorBarcode = nullptr;
mEditorDefaultBarcode = nullptr;
update(); // Initialize cached editor layouts
}
@@ -92,6 +93,8 @@ namespace glabels
mBcColorNode = object->mBcColorNode;
mEditorBarcode = nullptr;
mEditorDefaultBarcode = nullptr;
update(); // Initialize cached editor layouts
}
@@ -314,6 +317,9 @@ namespace glabels
///
void LabelModelBarcodeObject::update()
{
//
// Build barcode from data
//
if ( mEditorBarcode )
{
delete mEditorBarcode;
@@ -330,6 +336,28 @@ namespace glabels
mEditorBarcode->build( mBcData.toStdString(), mW.pt(), mH.pt() );
//
// Build a place holder barcode to display in editor, if cannot display actual barcode
//
if ( mEditorDefaultBarcode )
{
delete mEditorDefaultBarcode;
}
mEditorDefaultBarcode = glbarcode::Factory::createBarcode( mBcStyle.id().toStdString() );
if ( !mEditorDefaultBarcode )
{
qWarning() << "Invalid barcode style" << mBcStyle.id() << "using \"code39\".";
mBcStyle = BarcodeBackends::defaultStyle();
mEditorDefaultBarcode = glbarcode::Factory::createBarcode( mBcStyle.id().toStdString() );
}
mEditorDefaultBarcode->setChecksum(mBcChecksumFlag);
mEditorDefaultBarcode->setShowText(mBcTextFlag);
mEditorDefaultBarcode->build( mBcStyle.defaultDigits().toStdString(), mW.pt(), mH.pt() );
//
// Adjust size
//
if ( mEditorBarcode->isDataValid() )
{
mW = Distance::pt( mEditorBarcode->width() );
@@ -337,8 +365,8 @@ namespace glabels
}
else
{
mW = max( mW, minW );
mH = max( mH, minH );
mW = Distance::pt( mEditorDefaultBarcode->width() );
mH = Distance::pt( mEditorDefaultBarcode->height() );
}
QPainterPath path;
@@ -395,22 +423,37 @@ namespace glabels
///
/// Draw place holder in editor
/// Draw barcode place holder in editor
///
void
LabelModelBarcodeObject::drawPlaceHolder( QPainter* painter,
const QColor& color,
const QString& text ) const
{
QString shortText = text.left( 32 ); // Don't let the text get out of hand
//
// Render box
//
painter->setPen( Qt::NoPen );
painter->setBrush( QBrush( emptyFillColor ) );
painter->setBrush( QBrush( fillColor ) );
painter->drawRect( QRectF( 0, 0, mW.pt(), mH.pt() ) );
//
// Render default barcode
//
painter->setPen( QPen( color ) );
glbarcode::QtRenderer renderer(painter);
mEditorDefaultBarcode->render( renderer );
//
// Determine font size for text
//
QFont font( "Sans" );
font.setPointSizeF( 6 );
QFontMetricsF fm(font);
QRectF textRect = fm.boundingRect( text );
QFontMetricsF fm( font );
QRectF textRect = fm.boundingRect( shortText );
double wPts = (mW - 2*pad).pt();
double hPts = (mH - 2*pad).pt();
@@ -421,11 +464,27 @@ namespace glabels
font.setPointSizeF( 6 * std::min( scaleX, scaleY ) );
}
//
// Render hole for text (font size may have changed above)
//
fm = QFontMetricsF( font );
textRect = fm.boundingRect( shortText );
QRectF holeRect( (mW.pt() - textRect.width())/2 - pad.pt(),
(mH.pt() - textRect.height())/2 - pad.pt(),
textRect.width() + 2*pad.pt(),
textRect.height() + 2*pad.pt() );
painter->setPen( Qt::NoPen );
painter->setBrush( QBrush( fillColor ) );
painter->drawRect( holeRect );
//
// Render text
//
painter->setFont( font );
painter->setPen( QPen( color ) );
painter->drawText( QRectF( 0, 0, mW.pt(), mH.pt() ),
Qt::AlignCenter,
text );
painter->drawText( QRectF( 0, 0, mW.pt(), mH.pt() ), Qt::AlignCenter, shortText );
}