Gary's Blog

#!/usr/bin/env python  
# coding: utf-8  

import sys  
import codecs  

# Workaround to handle exception of cp65001 issue.  
try:  
 codecs.lookup('cp65001')  
except:  
 def cp65001(name):  
 if name.lower() == 'cp65001':  
 return codecs.lookup('utf-8')  
 codecs.register(cp65001)  


from PySide.QtCore import *  
from PySide.QtGui import *  
from PySide.QtDeclarative import *  

# The string list to show.  
Zodiac = [  
 'Aries',  
 'Taurus',  
 'Gemini',  
 'Cancer',  
 'Leo',  
 'Virgo',  
 'Libra',  
 'Scorpius',  
 'Sagittarius',  
 'Capricornus',  
 'Aquarius',  
 'Pisces',  
 ]  

app = QApplication(sys.argv)  

view = QDeclarativeView()  

# Set model to view's context.  
ctx = view.rootContext()  
ctx.setContextProperty('exampleModel', Zodiac)  
view.setResizeMode(QDeclarativeView.SizeRootObjectToView)  
view.setSource(QUrl('main.qml'))  
view.show()  
app.exec_()  
這裡，我們建立了一個string list名為Zodiac，裡面放的就是黃道十二宮的名稱。要將任何資料由PySide傳遞給QML，最簡單的方式就是透過setContextProperty()來做。我們將Zodiac這個string list透過setContextProperty()將其命名為exampleModel，然後傳給QML。 PySide的部份就是這麼簡單，接下來就是QML的工作了。讓我們看看QML這邊要怎麼做：  
import QtQuick 1.0  
Rectangle {  
 width: 600  
 height: 600   
 Text {  
 id: caption  
 anchors.top: parent.top  
 anchors.left: parent.left  
 anchors.right: parent.right  
 height: 64  
 text: "Zodiac:"  
 font.pixelSize: 36  
 font.family: "Arial Black"   
 }  

 ListView {  
 anchors.top: caption.bottom  
 anchors.left: parent.left  
 anchors.bottom: parent.bottom  
 anchors.right: parent.right  
 clip: true  
 /* exampleModel is passed from main.py by setContextProperty(). */  
 model: exampleModel   
 delegate: Component {  
 Rectangle {  
 color: "silver"  
 width: 450  
 height: 64  
 border.color: "DarkBlue"  
 border.width: 5  
 anchors.topMargin: 10  
 anchors.bottomMargin: 10  
 anchors.leftMargin: 10  
 anchors.rightMargin: 10  
 anchors.horizontalCenter: parent.horizontalCenter  
 radius: 10   
 Text {   
 anchors.horizontalCenter: parent.horizontalCenter  
 /* The role of data in string list which made by PySide is  
 * 'modelData'. So we use modelData here to get the content  
 * of data.  
 */  
 text: modelData  
 font.pixelSize: 36  
 font.family: "Arial Black"  
 color: "DarkBlue"  
 }  
 }  
 }  
 }   
}  

import fnmatch, re  

def wildcard_match(wildcard, *string_list):  
 """Wildcard-style string match function.  
 :param wildcard: the wildcard string.  
 :param string_list: The list of string to be search.  
 :return: The result is a list which contains the matched strings.   
 If no string matched, an empty list will be returned.  
 """  
 regex = fnmatch.translate(wildcard)  
 pattern = re.compile(regex)  
 matched_list = []  
 for s in string_list:  
 if pattern.match(s):  
 matched_list.append(s)  
 return matched_list  

LookupError: unknown encoding: cp65001  
cp65001是什麼鬼！？其實，它就是UTF8阿！只是，Microsoft喜歡叫他cp65001（code page 65001號)。附帶一提，我們常用的Big5是cp950。想要知道你目前所使用的code page可以在Windows的console視窗執行   

from PySide.QtCore import *  
from PySide.QtGui import *  
from PySide.QtDeclarative import *  

class MyView(QDeclarativeView):  
 def __init__(self, src):  
 super(MyView, self).__init__()  
 self.setAttribute(Qt.WA_TranslucentBackground)  
 self.viewport().setAutoFillBackground(False)  
 self.setWindowTitle('My QML Windows')  
 self.setSource(src)  
 self.setResizeMode(QDeclarativeView.SizeRootObjectToView)  

app = QApplication([])  
view = MyView(src="MyView.qml")  
view.show()  
app.exec_()  

from PySide.QtCore import *  
from PySide.QtGui import *  
from PySide.QtOpenGL import *  
from PySide.QtDeclarative import *  

class MyView(QDeclarativeView):  
 def __init__(self, src, useOpenGL=False):  
 super(MyView, self).__init__()  
 if useOpenGL:  
 format = QGLFormat.defaultFormat()  
 format.setSampleBuffers(False)   
 glw = QGLWidget(format)  
 glw.setAutoFillBackground(False)  
 self.setViewport(glw)  
 self.setAttribute(Qt.WA_TranslucentBackground)  
 self.viewport().setAutoFillBackground(False)   
 self.setWindowTitle('My QML Windows')  
 self.setSource(src)  
 self.setResizeMode(QDeclarativeView.SizeRootObjectToView)   

app = QApplication([])  
view = MyView(src="MyView.qml", useOpenGL=True)  
view.show()  
app.exec_()  

moc_xxx.obj:-1: error: LNK2001: unresolved external symbol "public: static struct QMetaObject const QwtPlot::staticMetaObject" (?staticMetaObject@QwtPlot@@2UQMetaObject@@B)