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#!/usr/bin/env python
# Copyright (c) 2007-8 Qtrac Ltd. All rights reserved.
# This program or module 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 2 of the License, or
# version 3 of the License, or (at your option) any later version. It is
# provided for educational purposes and 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.
from __future__ import division
import functools
import random
import sys
from PyQt4.QtCore import *
from PyQt4.QtGui import *
MAC = "qt_mac_set_native_menubar" in dir()
# A4 in points
PageSize = (595, 842)
# US Letter in points
#PageSize = (612, 792)
PointSize = 10
MagicNumber = 0x70616765
FileVersion = 1
Dirty = False
class TextItemDlg(QDialog):
def __init__(self, item=None, position=None, scene=None,
parent=None):
super(QDialog, self).__init__(parent)
self.item = item
self.position = position
self.scene = scene
self.editor = QTextEdit()
self.editor.setAcceptRichText(False)
self.editor.setTabChangesFocus(True)
editorLabel = QLabel("&Text:")
editorLabel.setBuddy(self.editor)
self.fontComboBox = QFontComboBox()
self.fontComboBox.setCurrentFont(QFont("Times", PointSize))
fontLabel = QLabel("&Font:")
fontLabel.setBuddy(self.fontComboBox)
self.fontSpinBox = QSpinBox()
self.fontSpinBox.setAlignment(Qt.AlignRight|Qt.AlignVCenter)
self.fontSpinBox.setRange(6, 280)
self.fontSpinBox.setValue(PointSize)
fontSizeLabel = QLabel("&Size:")
fontSizeLabel.setBuddy(self.fontSpinBox)
self.buttonBox = QDialogButtonBox(QDialogButtonBox.Ok|
QDialogButtonBox.Cancel)
self.buttonBox.button(QDialogButtonBox.Ok).setEnabled(False)
if self.item is not None:
self.editor.setPlainText(self.item.toPlainText())
self.fontComboBox.setCurrentFont(self.item.font())
self.fontSpinBox.setValue(self.item.font().pointSize())
layout = QGridLayout()
layout.addWidget(editorLabel, 0, 0)
layout.addWidget(self.editor, 1, 0, 1, 6)
layout.addWidget(fontLabel, 2, 0)
layout.addWidget(self.fontComboBox, 2, 1, 1, 2)
layout.addWidget(fontSizeLabel, 2, 3)
layout.addWidget(self.fontSpinBox, 2, 4, 1, 2)
layout.addWidget(self.buttonBox, 3, 0, 1, 6)
self.setLayout(layout)
self.connect(self.fontComboBox,
SIGNAL("currentFontChanged(QFont)"), self.updateUi)
self.connect(self.fontSpinBox,
SIGNAL("valueChanged(int)"), self.updateUi)
self.connect(self.editor, SIGNAL("textChanged()"),
self.updateUi)
self.connect(self.buttonBox, SIGNAL("accepted()"), self.accept)
self.connect(self.buttonBox, SIGNAL("rejected()"), self.reject)
self.setWindowTitle("Page Designer - %s Text Item" % (
"Add" if self.item is None else "Edit"))
self.updateUi()
def updateUi(self):
font = self.fontComboBox.currentFont()
font.setPointSize(self.fontSpinBox.value())
self.editor.document().setDefaultFont(font)
self.buttonBox.button(QDialogButtonBox.Ok).setEnabled(
not self.editor.toPlainText().isEmpty())
def accept(self):
if self.item is None:
self.item = TextItem("", self.position, self.scene)
font = self.fontComboBox.currentFont()
font.setPointSize(self.fontSpinBox.value())
self.item.setFont(font)
self.item.setPlainText(self.editor.toPlainText())
self.item.update()
global Dirty
Dirty = True
QDialog.accept(self)
class TextItem(QGraphicsTextItem):
def __init__(self, text, position, scene,
font=QFont("Times", PointSize), matrix=QMatrix()):
super(TextItem, self).__init__(text)
self.setFlags(QGraphicsItem.ItemIsSelectable|
QGraphicsItem.ItemIsMovable)
self.setFont(font)
self.setPos(position)
self.setMatrix(matrix)
scene.clearSelection()
scene.addItem(self)
self.setSelected(True)
global Dirty
Dirty = True
def parentWidget(self):
return self.scene().views()[0]
def itemChange(self, change, variant):
if change != QGraphicsItem.ItemSelectedChange:
global Dirty
Dirty = True
return QGraphicsTextItem.itemChange(self, change, variant)
def mouseDoubleClickEvent(self, event):
dialog = TextItemDlg(self, self.parentWidget())
dialog.exec_()
class BoxItem(QGraphicsItem):
def __init__(self, position, scene, style=Qt.SolidLine,
rect=None, matrix=QMatrix()):
super(BoxItem, self).__init__()
self.setFlags(QGraphicsItem.ItemIsSelectable|
QGraphicsItem.ItemIsMovable|
QGraphicsItem.ItemIsFocusable)
if rect is None:
rect = QRectF(-10 * PointSize, -PointSize,
20 * PointSize, 2 * PointSize)
self.rect = rect
self.style = style
self.setPos(position)
self.setMatrix(matrix)
scene.clearSelection()
scene.addItem(self)
self.setSelected(True)
self.setFocus()
global Dirty
Dirty = True
def parentWidget(self):
return self.scene().views()[0]
def boundingRect(self):
return self.rect.adjusted(-2, -2, 2, 2)
def paint(self, painter, option, widget):
pen = QPen(self.style)
pen.setColor(Qt.black)
pen.setWidth(1)
if option.state & QStyle.State_Selected:
pen.setColor(Qt.blue)
painter.setPen(pen)
painter.drawRect(self.rect)
def itemChange(self, change, variant):
if change != QGraphicsItem.ItemSelectedChange:
global Dirty
Dirty = True
return QGraphicsItem.itemChange(self, change, variant)
def contextMenuEvent(self, event):
wrapped = []
menu = QMenu(self.parentWidget())
for text, param in (
("&Solid", Qt.SolidLine),
("&Dashed", Qt.DashLine),
("D&otted", Qt.DotLine),
("D&ashDotted", Qt.DashDotLine),
("DashDo&tDotted", Qt.DashDotDotLine)):
wrapper = functools.partial(self.setStyle, param)
wrapped.append(wrapper)
menu.addAction(text, wrapper)
menu.exec_(event.screenPos())
def setStyle(self, style):
self.style = style
self.update()
global Dirty
Dirty = True
def keyPressEvent(self, event):
factor = PointSize / 4
changed = False
if event.modifiers() & Qt.ShiftModifier:
if event.key() == Qt.Key_Left:
self.rect.setRight(self.rect.right() - factor)
changed = True
elif event.key() == Qt.Key_Right:
self.rect.setRight(self.rect.right() + factor)
changed = True
elif event.key() == Qt.Key_Up:
self.rect.setBottom(self.rect.bottom() - factor)
changed = True
elif event.key() == Qt.Key_Down:
self.rect.setBottom(self.rect.bottom() + factor)
changed = True
if changed:
self.update()
global Dirty
Dirty = True
else:
QGraphicsItem.keyPressEvent(self, event)
class GraphicsView(QGraphicsView):
def __init__(self, parent=None):
super(GraphicsView, self).__init__(parent)
self.setDragMode(QGraphicsView.RubberBandDrag)
self.setRenderHint(QPainter.Antialiasing)
self.setRenderHint(QPainter.TextAntialiasing)
def wheelEvent(self, event):
factor = 1.41 ** (-event.delta() / 240.0)
self.scale(factor, factor)
class MainForm(QDialog):
def __init__(self, parent=None):
super(MainForm, self).__init__(parent)
self.filename = QString()
self.copiedItem = QByteArray()
self.pasteOffset = 5
self.prevPoint = QPoint()
self.addOffset = 5
self.borders = []
self.printer = QPrinter(QPrinter.HighResolution)
#self.printer.setWinPageSize(3)
#self.printer.setPageSize(10)
self.printer.setPaperSource(QPrinter.Auto)
self.view = GraphicsView()
self.scene = QGraphicsScene(self)
self.scene.setSceneRect(0, 0, PageSize[0], PageSize[1])
self.addBorders()
self.view.setScene(self.scene)
buttonLayout = QVBoxLayout()
for text, slot in (
("Add &Text", self.addText),
("Add &Box", self.addBox),
("Add Pi&xmap", self.addPixmap),
("&Copy", self.copy),
("C&ut", self.cut),
("&Paste", self.paste),
("&Delete...", self.delete),
("&Rotate", self.rotate),
("Pri&nt...", self.print_),
("&Open...", self.open),
("&Save", self.save),
("&Quit", self.accept)):
button = QPushButton(text)
if not MAC:
button.setFocusPolicy(Qt.NoFocus)
self.connect(button, SIGNAL("clicked()"), slot)
if text == "Pri&nt...":
buttonLayout.addStretch(5)
if text == "&Quit":
buttonLayout.addStretch(1)
buttonLayout.addWidget(button)
buttonLayout.addStretch()
layout = QHBoxLayout()
layout.addWidget(self.view, 1)
layout.addLayout(buttonLayout)
self.setLayout(layout)
fm = QFontMetrics(self.font())
self.resize(self.scene.width() + fm.width(" Delete... ") + 50,
self.scene.height() + 50)
self.setWindowTitle("Page Designer")
def addBorders(self):
self.borders = []
rect = QRectF(0, 0, PageSize[0], PageSize[1])
self.borders.append(self.scene.addRect(rect, Qt.yellow))
margin = 5.25 * PointSize
self.borders.append(self.scene.addRect(
rect.adjusted(margin, margin, -margin, -margin),
Qt.yellow))
def removeBorders(self):
while self.borders:
item = self.borders.pop()
self.scene.removeItem(item)
del item
def reject(self):
self.accept()
def accept(self):
self.offerSave()
QDialog.accept(self)
def offerSave(self):
if Dirty and QMessageBox.question(self,
"Page Designer - Unsaved Changes",
"Save unsaved changes?",
QMessageBox.Yes|QMessageBox.No) == \
QMessageBox.Yes:
self.save()
def position(self):
point = self.mapFromGlobal(QCursor.pos())
if not self.view.geometry().contains(point):
coord = random.randint(36, 144)
point = QPoint(coord, coord)
else:
if point == self.prevPoint:
point += QPoint(self.addOffset, self.addOffset)
self.addOffset += 5
else:
self.addOffset = 5
self.prevPoint = point
return self.view.mapToScene(point)
def addText(self):
dialog = TextItemDlg(position=self.position(),
scene=self.scene, parent=self)
dialog.exec_()
def addBox(self):
BoxItem(self.position(), self.scene)
def addPixmap(self):
path = QFileInfo(self.filename).path() \
if not self.filename.isEmpty() else "."
fname = QFileDialog.getOpenFileName(self,
"Page Designer - Add Pixmap", path,
"Pixmap Files (*.bmp *.jpg *.png *.xpm)")
if fname.isEmpty():
return
self.createPixmapItem(QPixmap(fname), self.position())
def createPixmapItem(self, pixmap, position, matrix=QMatrix()):
item = QGraphicsPixmapItem(pixmap)
item.setFlags(QGraphicsItem.ItemIsSelectable|
QGraphicsItem.ItemIsMovable)
item.setPos(position)
item.setMatrix(matrix)
self.scene.clearSelection()
self.scene.addItem(item)
item.setSelected(True)
global Dirty
Dirty = True
def selectedItem(self):
items = self.scene.selectedItems()
if len(items) == 1:
return items[0]
return None
def copy(self):
item = self.selectedItem()
if item is None:
return
self.copiedItem.clear()
self.pasteOffset = 5
stream = QDataStream(self.copiedItem, QIODevice.WriteOnly)
self.writeItemToStream(stream, item)
def cut(self):
item = self.selectedItem()
if item is None:
return
self.copy()
self.scene.removeItem(item)
del item
def paste(self):
if self.copiedItem.isEmpty():
return
stream = QDataStream(self.copiedItem, QIODevice.ReadOnly)
self.readItemFromStream(stream, self.pasteOffset)
self.pasteOffset += 5
def rotate(self):
for item in self.scene.selectedItems():
item.rotate(30)
def delete(self):
items = self.scene.selectedItems()
if len(items) and QMessageBox.question(self,
"Page Designer - Delete",
"Delete %d item%s?" % (len(items),
"s" if len(items) != 1 else ""),
QMessageBox.Yes|QMessageBox.No) == QMessageBox.Yes:
while items:
item = items.pop()
self.scene.removeItem(item)
del item
global Dirty
Dirty = True
def print_(self):
dialog = QPrintDialog(self.printer)
if dialog.exec_():
painter = QPainter(self.printer)
#painter.setRenderHint(QPainter.Antialiasing)
#painter.setRenderHint(QPainter.TextAntialiasing)
self.scene.clearSelection()
self.removeBorders()
self.scene.render(painter)
self.addBorders()
def open(self):
self.offerSave()
path = QFileInfo(self.filename).path() \
if not self.filename.isEmpty() else "."
fname = QFileDialog.getOpenFileName(self,
"Page Designer - Open", path,
"Page Designer Files (*.pgd)")
if fname.isEmpty():
return
self.filename = fname
fh = None
try:
fh = QFile(self.filename)
if not fh.open(QIODevice.ReadOnly):
raise IOError, unicode(fh.errorString())
items = self.scene.items()
while items:
item = items.pop()
self.scene.removeItem(item)
del item
self.addBorders()
stream = QDataStream(fh)
stream.setVersion(QDataStream.Qt_4_2)
magic = stream.readInt32()
if magic != MagicNumber:
raise IOError, "not a valid .pgd file"
fileVersion = stream.readInt16()
if fileVersion != FileVersion:
raise IOError, "unrecognised .pgd file version"
while not fh.atEnd():
self.readItemFromStream(stream)
except IOError, e:
QMessageBox.warning(self, "Page Designer -- Open Error",
"Failed to open %s: %s" % (self.filename, e))
finally:
if fh is not None:
fh.close()
global Dirty
Dirty = False
def save(self):
if self.filename.isEmpty():
path = "."
fname = QFileDialog.getSaveFileName(self,
"Page Designer - Save As", path,
"Page Designer Files (*.pgd)")
if fname.isEmpty():
return
self.filename = fname
fh = None
try:
fh = QFile(self.filename)
if not fh.open(QIODevice.WriteOnly):
raise IOError, unicode(fh.errorString())
self.scene.clearSelection()
stream = QDataStream(fh)
stream.setVersion(QDataStream.Qt_4_2)
stream.writeInt32(MagicNumber)
stream.writeInt16(FileVersion)
for item in self.scene.items():
self.writeItemToStream(stream, item)
except IOError, e:
QMessageBox.warning(self, "Page Designer -- Save Error",
"Failed to save %s: %s" % (self.filename, e))
finally:
if fh is not None:
fh.close()
global Dirty
Dirty = False
def readItemFromStream(self, stream, offset=0):
type = QString()
position = QPointF()
matrix = QMatrix()
stream >> type >> position >> matrix
if offset:
position += QPointF(offset, offset)
if type == "Text":
text = QString()
font = QFont()
stream >> text >> font
TextItem(text, position, self.scene, font, matrix)
elif type == "Box":
rect = QRectF()
stream >> rect
style = Qt.PenStyle(stream.readInt16())
BoxItem(position, self.scene, style, rect, matrix)
elif type == "Pixmap":
pixmap = QPixmap()
stream >> pixmap
self.createPixmapItem(pixmap, position, matrix)
def writeItemToStream(self, stream, item):
if isinstance(item, QGraphicsTextItem):
stream << QString("Text") << item.pos() << item.matrix() \
<< item.toPlainText() << item.font()
elif isinstance(item, QGraphicsPixmapItem):
stream << QString("Pixmap") << item.pos() \
<< item.matrix() << item.pixmap()
elif isinstance(item, BoxItem):
stream << QString("Box") << item.pos() << item.matrix() \
<< item.rect
stream.writeInt16(item.style)
app = QApplication(sys.argv)
form = MainForm()
rect = QApplication.desktop().availableGeometry()
form.resize(int(rect.width() * 0.6), int(rect.height() * 0.9))
form.show()
app.exec_() |
