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#!/usr/bin/env python
"""**************************************************************************
** $Id$
**
** Copyright (C) 1992-2000 Trolltech AS. All rights reserved.
**
** This file is part of an example program for Qt. This example
** program may be used, distributed and modified without limitation.
**
***************************************************************************"""
import sys
from qt import *
class FontRowTable( QFrame ):
def __init__( self, parent=None, name=None ):
QFrame.__init__( self, parent, name )
self.setBackgroundMode(self.PaletteBase)
self.setFrameStyle(self.Panel|self.Sunken)
self.setMargin(8)
self.setRow(0)
self.row = 0
self.tablefont = QFont( QApplication.font() )
def sizeHint( self ) :
width = 16*self.cellSize().width()+QSize(2,2).width()*(self.margin()+self.frameWidth())
height = 16*self.cellSize().height()+QSize(2,2).height()*(self.margin()+self.frameWidth())
return QSize(width,height)
def cellSize( self ) :
fm = self.fontMetrics()
return QSize( fm.maxWidth(), fm.lineSpacing() + 1 )
def paintEvent( self, e ):
QFrame.paintEvent(self, e)
p = QPainter(self)
p.setClipRegion(e.region())
r = QRect(e.rect())
fm = self.fontMetrics()
ml = self.frameWidth() + self.margin() + 1 + max(0,-fm.minLeftBearing())
mt = self.frameWidth() + self.margin()
cell = QSize((self.width()-15-ml)/16,(self.height()-15-mt)/16)
if not cell.width() or not cell.height() :
return
mini = r.left() / cell.width()
maxi = (r.right()+cell.width()-1) / cell.width()
minj = r.top() / cell.height()
maxj = (r.bottom()+cell.height()-1) / cell.height()
h = fm.height()
body = QColor(255,255,192);
negative = QColor(255,192,192);
positive = QColor(192,192,255);
rnegative = QColor(255,128,128);
rpositive = QColor(128,128,255);
for j in range(minj, maxj+1, 1) :
for i in range(mini, maxi+1, 1) :
if i < 16 and j < 16 :
x = i*cell.width()
y = j*cell.height()
ch = QChar(j*16+i) #,self.row) # just accept one argument!!!
if fm.inFont(ch) :
w = fm.width(ch)
l = fm.leftBearing(ch)
r = fm.rightBearing(ch)
x += ml
y += mt+h
p.fillRect(x,y,w,-h,QBrush(body))
if w :
if l :
if l < 0: sign = negative
else: sign = positive
if l > 0: lsign = 0
else: lsign = 1
p.fillRect(x+lsign, y-h/2, abs(l),-h/2, QBrush(sign))
if r :
if r < 0: sign = rnegative
else: sign = rpositive
if r > 0: rsign = r
else: rsign = 0
p.fillRect(x+w-rsign,y+2, abs(r),-h/2, QBrush(sign))
s = QString( ch )
p.setPen(QPen(Qt.black))
p.drawText(x,y,s)
def setRow( self, r ) :
self.row = r
fm = self.fontMetrics()
str = " minLB=%d minRB=%d maxW=%d" % (fm.minLeftBearing(), fm.minRightBearing(), fm.maxWidth())
self.emit( PYSIGNAL("fontInformation"), ( QString(str), ) )
self.update()
def chooseFont( self ) :
ok = 0
oldfont = QFont( self.tablefont )
self.tablefont, ok = QFontDialog.getFont(oldfont, self)
if ok:
self.setFont(self.tablefont)
else:
self.tablefont = oldfont
class FontDisplayer( QMainWindow ) :
def __init__( self, parent=None, name=None ):
QMainWindow.__init__( self, parent, name )
table = FontRowTable(self)
controls = QToolBar(self)
QLabel(self.tr("Row:"), controls)
self.row = QSpinBox(0,255,1,controls)
controls.addSeparator()
fontbutton = QPushButton(self.tr("Font..."), controls)
status = QStatusBar(self)
self.connect( self.row, SIGNAL("valueChanged(int)"), table.setRow )
self.connect( fontbutton, SIGNAL("clicked()"), table.chooseFont )
self.connect( table, PYSIGNAL("fontInformation"),
status, SLOT("message(const QString&)") )
table.setRow(0)
self.setCentralWidget(table)
def main( args ):
# Use an interesting font
QApplication.setFont(QFont("unifont",16))
app = QApplication(sys.argv)
m = FontDisplayer()
sh = QSize( m.centralWidget().sizeHint() )
m.resize(sh.width(), sh.height() + 3 * m.statusBar().height())
app.setMainWidget(m);
m.setCaption("Qt Example - QFD");
m.show()
app.exec_loop()
if __name__=="__main__":
main(sys.argv)
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