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Various fixes for quickprint:
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 - no more ballistic scalebar shooting off the side of the page (it still needs to be beautified a bit, but at least its scaling properly now)
 - determine screen resolution instead of just assuming 72dpi
 - added option to set page size and fixes so that print renders ok at various page sizes.
 - added page size to string and string to page size static methods



git-svn-id: http://svn.osgeo.org/qgis/trunk/qgis@8107 c8812cc2-4d05-0410-92ff-de0c093fc19c
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timlinux committed Feb 5, 2008
1 parent 6258389 commit a0b0a96
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Showing 2 changed files with 115 additions and 166 deletions.
276 changes: 110 additions & 166 deletions src/gui/qgsquickprint.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -46,7 +46,6 @@
#include <QString>
#include <QSettings>
#include <QSvgRenderer>
#include <QPrinter>

//other includes
#include <cmath>
Expand All @@ -57,6 +56,7 @@

QgsQuickPrint::QgsQuickPrint()
{
mPageSize = QPrinter::A4;
}

QgsQuickPrint::~QgsQuickPrint()
Expand Down Expand Up @@ -106,6 +106,10 @@ void QgsQuickPrint::setMapBackgroundColor(QColor theColor)
{
mMapBackgroundColour = theColor;
}
void QgsQuickPrint::setPageSize (QPrinter::PageSize theSize)
{
mPageSize = theSize;
}

void QgsQuickPrint::printMap()
{
Expand All @@ -123,18 +127,21 @@ void QgsQuickPrint::printMap()
mOutputFileName += ".pdf";
}

QPrinter myPrinter ( QPrinter::HighResolution ); //1200dpi for ps ( & pdf I think )
myPrinter.setPageSize ( QPrinter::Letter );
//myPrinter.setPageSize ( QPrinter::A4 );
// Initialising the printer this way lets us find out what
// the screen resolution is which we store and then
// reset the resolution of the printer after that...
QPrinter myPrinter ( QPrinter::ScreenResolution );
int myScreenResolutionDpi = myPrinter.resolution(); //try to get programmatically
//
// Try to force the printer resolution to 300dpi
// to get past platform specific defaults in printer
// resolution...
//
int myPrintResolutionDpi = 300;
int myScreenResolutionDpi = 72; //try to get programmatically
myPrinter.setResolution( myPrintResolutionDpi );
myPrinter.setOutputFormat ( QPrinter::PdfFormat );
qDebug( "Printing to page size" + pageSizeToString(mPageSize).toLocal8Bit());
myPrinter.setPageSize ( mPageSize );
myPrinter.setOutputFileName ( mOutputFileName );
myPrinter.setOrientation ( QPrinter::Landscape );
myPrinter.setDocName ( "quickprint Report" );
Expand Down Expand Up @@ -621,7 +628,13 @@ void QgsQuickPrint::printMap()
//
// Draw the scale bar
//
myOriginY += myLogoYDim/2;
myPrintPainter.setViewport(myOriginX,
myOriginY,
myOriginalViewport.width(),
myOriginalViewport.height());
renderPrintScaleBar(&myPrintPainter, mpMapRender, myLogoXDim);
myPrintPainter.setViewport(myOriginalViewport);

//
// Finish up
Expand Down Expand Up @@ -754,19 +767,16 @@ void QgsQuickPrint::renderPrintScaleBar(QPainter * thepPainter,
int theMaximumWidth)
{
//hard coding some options for now
int myStyleIndex = 1; //tick up
bool mySnappingFlag = true;
QColor mColour = Qt::black;
int myPlacementIndex = 3; //br
// Hard coded sizes
int myMajorTickSize=20;
int myTextOffsetX=30;
int myTextOffsetY=30;
int myXMargin=260;
int myYMargin=180;
int myCanvasWidth = thepMapRender->width();
int myPreferredSize = theMaximumWidth;
double myActualSize=myPreferredSize;
int myMajorTickSize=10;
int myTextOffsetX=0;
int myTextOffsetY=5;
int myXMargin=20;
int myYMargin=20;
int myPreferredSize = theMaximumWidth - (myXMargin *2);
double myActualSize = 0;
int myBufferSize=1; //softcode this later
QColor myBackColor = Qt::white; //used for text
QColor myForeColor = Qt::black; //used for text
Expand All @@ -778,24 +788,16 @@ void QgsQuickPrint::renderPrintScaleBar(QPainter * thepPainter,
//projections) and that just confuses the rest of the code in this
//function, so force to a positive number.
double myMuppDouble = std::abs(thepMapRender->mupp());

//
// Exit if the canvas width is 0 or layercount is 0 or QGIS will freeze
int myLayerCount=thepMapRender->layerSet().count();
if (!myLayerCount || !myMuppDouble) return;


//Calculate size of scale bar for preferred number of map units
double myScaleBarWidth = myPreferredSize / myMuppDouble;

//If scale bar is very small reset to 1/4 of the canvas wide
if (myScaleBarWidth < 30)
{
myScaleBarWidth = myCanvasWidth / 4; // pixels
myActualSize = myScaleBarWidth * myMuppDouble; // map units
};

double myScaleBarWidth = myPreferredSize;
myActualSize = myScaleBarWidth * myMuppDouble;


// Work out the exponent for the number - e.g, 1234 will give 3,
// and .001234 will give -3
double myPowerOf10 = floor(log10(myActualSize));
Expand Down Expand Up @@ -884,32 +886,9 @@ void QgsQuickPrint::renderPrintScaleBar(QPainter * thepPainter,
//Calculate total width of scale bar and label
double myTotalScaleBarWidth = myScaleBarWidth + myFontWidth;

//determine the origin of scale bar depending on placement selected
//determine the origin of scale bar (bottom right)
int myOriginX=myXMargin;
int myOriginY=myYMargin;
switch (myPlacementIndex)
{
case 0: // Bottom Left
myOriginX = myXMargin;
myOriginY = thepPainter->device()->height() - myYMargin + myTextOffsetY;
break;
case 1: // Top Left
myOriginX = myXMargin;
myOriginY = myYMargin;
break;
case 2: // Top Right
myOriginX = thepPainter->device()->width() - ((int) myTotalScaleBarWidth) - myXMargin;
myOriginY = myXMargin;
break;
case 3: // Bottom Right
myOriginX = thepPainter->device()->width() -
((int) myTotalScaleBarWidth) -
(myXMargin * 2);
myOriginY = thepPainter->device()->height() - myYMargin;
break;
default:
QgsDebugMsg( "Unable to determine where to put scale bar so defaulting to top left");
}

//Set pen to draw with
QPen myForegroundPen( mColour, 2 );
Expand All @@ -918,120 +897,15 @@ void QgsQuickPrint::renderPrintScaleBar(QPainter * thepPainter,
//Cast myScaleBarWidth to int for drawing
int myScaleBarWidthInt = (int) myScaleBarWidth;

//Create array of vertices for scale bar depending on style
switch (myStyleIndex)
{
case 0: // Tick Down
{
QPolygon myTickDownArray(4);
//draw a buffer first so bar shows up on dark images
thepPainter->setPen( myBackgroundPen );
myTickDownArray.putPoints(0,4,
myOriginX , (myOriginY + myMajorTickSize) ,
myOriginX , myOriginY ,
(myScaleBarWidthInt + myOriginX), myOriginY ,
(myScaleBarWidthInt + myOriginX), (myOriginY + myMajorTickSize)
);
thepPainter->drawPolyline(myTickDownArray);
//now draw the bar itself in user selected color
thepPainter->setPen( myForegroundPen );
myTickDownArray.putPoints(0,4,
myOriginX , (myOriginY + myMajorTickSize) ,
myOriginX , myOriginY ,
(myScaleBarWidthInt + myOriginX), myOriginY ,
(myScaleBarWidthInt + myOriginX), (myOriginY + myMajorTickSize)
);
thepPainter->drawPolyline(myTickDownArray);
break;
}
case 1: // tick up
{
QPolygon myTickUpArray(4);
//draw a buffer first so bar shows up on dark images
thepPainter->setPen( myBackgroundPen );
myTickUpArray.putPoints(0,4,
myOriginX , myOriginY ,
myOriginX , myOriginY + myMajorTickSize ,
(myScaleBarWidthInt + myOriginX), myOriginY + myMajorTickSize ,
(myScaleBarWidthInt + myOriginX), myOriginY
);
thepPainter->drawPolyline(myTickUpArray);
//now draw the bar itself in user selected color
thepPainter->setPen( myForegroundPen );
myTickUpArray.putPoints(0,4,
myOriginX , myOriginY ,
myOriginX , myOriginY + myMajorTickSize ,
(myScaleBarWidthInt + myOriginX), myOriginY + myMajorTickSize ,
(myScaleBarWidthInt + myOriginX), myOriginY
);
thepPainter->drawPolyline(myTickUpArray);
break;
}
case 2: // Bar
{
QPolygon myBarArray(2);
//draw a buffer first so bar shows up on dark images
thepPainter->setPen( myBackgroundPen );
myBarArray.putPoints(0,2,
myOriginX,
(myOriginY + (myMajorTickSize/2)),
(myScaleBarWidthInt + myOriginX), (myOriginY + (myMajorTickSize/2))
);
thepPainter->drawPolyline(myBarArray);
//now draw the bar itself in user selected color
thepPainter->setPen( myForegroundPen );
myBarArray.putPoints(0,2,
myOriginX , (myOriginY + (myMajorTickSize/2)),
(myScaleBarWidthInt + myOriginX), (myOriginY + (myMajorTickSize/2))
);
thepPainter->drawPolyline(myBarArray);
break;
}
case 3: // box
{
// Want square corners for a box
myBackgroundPen.setJoinStyle( Qt::MiterJoin );
myForegroundPen.setJoinStyle( Qt::MiterJoin );
QPolygon myBoxArray(5);
//draw a buffer first so bar shows up on dark images
thepPainter->setPen( myBackgroundPen );
myBoxArray.putPoints(0,5,
myOriginX , myOriginY,
(myScaleBarWidthInt + myOriginX), myOriginY,
(myScaleBarWidthInt + myOriginX), (myOriginY+myMajorTickSize),
myOriginX , (myOriginY+myMajorTickSize),
myOriginX , myOriginY
);
thepPainter->drawPolyline(myBoxArray);
//now draw the bar itself in user selected color
thepPainter->setPen( myForegroundPen );
thepPainter->setBrush( QBrush( mColour, Qt::SolidPattern) );
int midPointX = myScaleBarWidthInt/2 + myOriginX;
myBoxArray.putPoints(0,5,
myOriginX , myOriginY,
midPointX, myOriginY,
midPointX, (myOriginY+myMajorTickSize),
myOriginX , (myOriginY+myMajorTickSize),
myOriginX , myOriginY
);
thepPainter->drawPolygon(myBoxArray);

thepPainter->setBrush( Qt::NoBrush );
myBoxArray.putPoints(0,5,
midPointX , myOriginY,
(myScaleBarWidthInt + myOriginX), myOriginY,
(myScaleBarWidthInt + myOriginX), (myOriginY+myMajorTickSize),
midPointX , (myOriginY+myMajorTickSize),
midPointX , myOriginY
);
thepPainter->drawPolygon(myBoxArray);
break;
}
default:
std::cerr << "Unknown style\n";
}

//Do actual drawing of scale bar
//now draw the bar itself in user selected color
//thepPainter->setPen( myBackgroundPen );
thepPainter->setPen( myForegroundPen );
thepPainter->drawRect(
myOriginX,
myOriginY,
myOriginX + myScaleBarWidthInt,
myOriginY + myMajorTickSize
);

//
//Do drawing of scale bar text
Expand Down Expand Up @@ -1098,15 +972,15 @@ void QgsQuickPrint::renderPrintScaleBar(QPainter * thepPainter,
for (int j = 0-myBufferSize; j <= myBufferSize; j++)
{
thepPainter->drawText( i + (myOriginX+myScaleBarWidthInt+myTextOffsetX),
j + (myOriginY+myMajorTickSize) + myTextOffsetY,
j + myOriginY + myMajorTickSize + myFontHeight + myTextOffsetY,
myScaleBarUnitLabel);
}
}
//then the text itself
thepPainter->setPen( myForeColor );
thepPainter->drawText(
myOriginX + myScaleBarWidthInt + myTextOffsetX,
myOriginY + myMajorTickSize + myTextOffsetY,
myOriginY + myMajorTickSize + myFontHeight + myTextOffsetY,
myScaleBarUnitLabel
);
}
Expand Down Expand Up @@ -1151,5 +1025,75 @@ QStringList QgsQuickPrint::wordWrap(QString theString,
//qDebug(myList.join("\n").toLocal8Bit());
return myList;

}
QString QgsQuickPrint::pageSizeToString(QPrinter::PageSize theSize)
{
if (theSize==QPrinter::A0) return "QPrinter::A0";
if (theSize==QPrinter::A1) return "QPrinter::A1";
if (theSize==QPrinter::A2) return "QPrinter::A2";
if (theSize==QPrinter::A3) return "QPrinter::A3";
if (theSize==QPrinter::A4) return "QPrinter::A4";
if (theSize==QPrinter::A5) return "QPrinter::A5";
if (theSize==QPrinter::A6) return "QPrinter::A6";
if (theSize==QPrinter::A7) return "QPrinter::A7";
if (theSize==QPrinter::A8) return "QPrinter::A8";
if (theSize==QPrinter::A9) return "QPrinter::A9";
if (theSize==QPrinter::B0) return "QPrinter::B0";
if (theSize==QPrinter::B1) return "QPrinter::B1";
if (theSize==QPrinter::B10) return "QPrinter::B10";
if (theSize==QPrinter::B2) return "QPrinter::B2";
if (theSize==QPrinter::B3) return "QPrinter::B3";
if (theSize==QPrinter::B4) return "QPrinter::B4";
if (theSize==QPrinter::B5) return "QPrinter::B5";
if (theSize==QPrinter::B6) return "QPrinter::B6";
if (theSize==QPrinter::B7) return "QPrinter::B7";
if (theSize==QPrinter::B8) return "QPrinter::B8";
if (theSize==QPrinter::B9) return "QPrinter::B9";
if (theSize==QPrinter::C5E) return "QPrinter::C5E";
if (theSize==QPrinter::Comm10E) return "QPrinter::Comm10E";
if (theSize==QPrinter::DLE) return "QPrinter::DLE";
if (theSize==QPrinter::Executive) return "QPrinter::Executive";
if (theSize==QPrinter::Folio) return "QPrinter::Folio";
if (theSize==QPrinter::Ledger) return "QPrinter::Ledger";
if (theSize==QPrinter::Legal) return "QPrinter::Legal";
if (theSize==QPrinter::Letter) return "QPrinter::Letter";
//falback
return "QPrinter::A4";

}

QPrinter::PageSize QgsQuickPrint::stringToPageSize(QString theSize)
{
if (theSize=="QPrinter::A0") return QPrinter::A0;
if (theSize=="QPrinter::A1") return QPrinter::A1;
if (theSize=="QPrinter::A2") return QPrinter::A2;
if (theSize=="QPrinter::A3") return QPrinter::A3;
if (theSize=="QPrinter::A4") return QPrinter::A4;
if (theSize=="QPrinter::A5") return QPrinter::A5;
if (theSize=="QPrinter::A6") return QPrinter::A6;
if (theSize=="QPrinter::A7") return QPrinter::A7;
if (theSize=="QPrinter::A8") return QPrinter::A8;
if (theSize=="QPrinter::A9") return QPrinter::A9;
if (theSize=="QPrinter::B0") return QPrinter::B0;
if (theSize=="QPrinter::B1") return QPrinter::B1;
if (theSize=="QPrinter::B10") return QPrinter::B10;
if (theSize=="QPrinter::B2") return QPrinter::B2;
if (theSize=="QPrinter::B3") return QPrinter::B3;
if (theSize=="QPrinter::B4") return QPrinter::B4;
if (theSize=="QPrinter::B5") return QPrinter::B5;
if (theSize=="QPrinter::B6") return QPrinter::B6;
if (theSize=="QPrinter::B7") return QPrinter::B7;
if (theSize=="QPrinter::B8") return QPrinter::B8;
if (theSize=="QPrinter::B9") return QPrinter::B9;
if (theSize=="QPrinter::C5E") return QPrinter::C5E;
if (theSize=="QPrinter::Comm10E") return QPrinter::Comm10E;
if (theSize=="QPrinter::DLE") return QPrinter::DLE;
if (theSize=="QPrinter::Executive") return QPrinter::Executive;
if (theSize=="QPrinter::Folio") return QPrinter::Folio;
if (theSize=="QPrinter::Ledger") return QPrinter::Ledger;
if (theSize=="QPrinter::Legal") return QPrinter::Legal;
if (theSize=="QPrinter::Letter") return QPrinter::Letter;
//falback
return QPrinter::A4;

}
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