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#!/usr/bin/env python
#****************************************************************************
#** $Id$
#**
#** Copyright (C) 1992-1998 Troll Tech AS. All rights reserved.
#**
#** This file is part of an example program for PyQt. This example
#** program may be used, distributed and modified without limitation.
#**
#*****************************************************************************/
import sys
from qt import *
from qtsql import *
from dbconnect import createConnection
TRUE = 1
FALSE = 0
class CustomTable(QDataTable):
def __init__(self, cursor, autoPopulate = FALSE, parent = None, name = None):
QDataTable.__init__(self, cursor, autoPopulate, parent, name)
def paintField(self, p, field, cr, b):
if not field:
return
fn = str(field.name())
if fn == "pricesid":
query = QSqlQuery("SELECT name FROM prices WHERE id=%s" %
field.value().toString())
value = ""
if query.next():
value = query.value(0).toString()
p.drawText(2, 2, cr.width()-4, cr.height()-4,
self.fieldAlignment(field), value)
elif fn == "quantity":
p.drawText(2, 2, cr.width()-6, cr.height()-4,
Qt.AlignRight|Qt.AlignVCenter, field.value().toString())
elif fn in ("price", "cost"):
v = field.value().toDouble()
if v < 0:
p.setPen(QColor("red"))
value = QString(u"%.2f \u20ac" % v)
p.drawText(2, 2, cr.width()-6, cr.height()-4,
Qt.AlignRight|Qt.AlignVCenter, value)
elif fn == "paiddate":
if field.value().toDate().isNull():
v = QString("not yet")
p.setPen(QColor("red"))
else:
v = field.value().toDate().toString(Qt.LocalDate)
p.drawText(2, 2, cr.width()-4, cr.height()-4,
Qt.AlignHCenter|Qt.AlignVCenter, v)
else:
QDataTable.paintField(self, p, field, cr, b)
class InvoiceItemCursor(QSqlCursor):
def __init__(self):
QSqlCursor.__init__(self, "invoiceitem")
productPrice = QSqlFieldInfo("price", QVariant.Double)
self.append(productPrice)
self.setCalculated(productPrice.name(), TRUE)
productCost = QSqlFieldInfo("cost", QVariant.Double)
self.append(productCost)
self.setCalculated(productCost.name(), TRUE)
def calculateField(self, name):
fn = str(name)
if fn == "productname":
query = QSqlQuery("SELECT name FROM prices WHERE id=%d;" %
(self.field("pricesid").value().toInt()))
if query.next():
return query.value(0)
elif fn == "price":
query = QSqlQuery("SELECT price FROM prices WHERE id=%d;" %
(self.field("pricesid").value().toInt()))
if query.next():
return query.value(0)
elif fn == "cost":
query = QSqlQuery("SELECT price FROM prices WHERE id=%d;" %
(self.field("pricesid").value().toInt()))
if query.next():
return QVariant(query.value(0).toDouble() *
self.value("quantity").toDouble())
return QVariant(QString.null)
def primeInsert(self):
buffer = self.editBuffer()
buffer.setValue("id", QVariant(0))
buffer.setValue("paiddate", QVariant(QDate.currentDate()))
buffer.setValue("quantity", QVariant(1))
return buffer
class ProductPicker(QComboBox):
def __init__(self, parent = None, name = None):
QComboBox.__init__(self, parent, name)
cur = QSqlCursor("prices")
cur.select(cur.index("id"))
while cur.next():
self.insertItem(cur.value("name").toString(), cur.value("id").toInt())
class CustomSqlEditorFactory(QSqlEditorFactory):
def __init__(self):
QSqlEditorFactory.__init__(self)
def createEditor(self, parent, field):
try:
if str(field.name()) == "pricesid":
return ProductPicker(parent)
except AttributeError:
pass
return QSqlEditorFactory.createEditor(self, parent, field)
class Table(CustomTable):
def __init__(self):
self.invoiceItemCursor = InvoiceItemCursor()
QDataTable.__init__(self, self.invoiceItemCursor)
self.propMap = QSqlPropertyMap()
self.editorFactory = CustomSqlEditorFactory()
self.propMap.insert("ProductPicker", "pricesid")
self.installPropertyMap(self.propMap)
self.installEditorFactory(self.editorFactory)
for cn, ch in (("pricesid", "Product"),
("quantity", "Quantity"),
("price", "Price" ),
("cost", "Cost"),
("paiddate", "Paid")):
self.addColumn(cn, ch)
self.setColumnWidth(0 , 150)
self.setColumnWidth(1, 70)
self.resize(600, 250)
self.refresh()
if __name__=='__main__':
app = QApplication(sys.argv)
if createConnection():
t = Table()
app.setMainWidget(t)
t.show()
app.exec_loop()
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