Using ERIC6 and PYQT5 to achieve Python's extreme GUI Programming (series)----Drawing (Drawing) (1)--Write text

Overview

This article implements the following program: ( drawing text in a form )

The main steps are as follows:

1. Create a new project in Eric6, create a new form

2, (automatically open) into PyQt5 Desinger, edit the GUI, save

3, back to Eric 6, to the previous step to get the interface file Drawing.ui file right-click, compile the form, get ui_drawing.py file

4, then right-click on the Drawing.ui file, generate dialog code, get drawing.py file. ( add your own program logic in drawing.py )

5, Py2exe package into EXE file (this step)

Body

Next to "Overview" Step 4th:

In drawing.py, prepare the text you want to paint (self.text):

    def __init__ (Self, parent=None):          #  ...        ' \u041b\u0435\u0432 \u041d\u0438\u043a\u043e\u043b\u0430\u0435\u0432\u0438\u0447 \u0422\u043e\u043b\u0441\ u0442\u043e\u0439: \n\u0410\u043d\u043d\u0430 \u041a\u0430\u0440\u0435\u043d\u0438\u043d\u0430'

Then define a painting event:

    def paintevent (Self, event):         ...

All the paintings take place within this painting event. Add four lines of code to this painting event!

        QP = qtgui.qpainter ()        qp.begin (self)        self.drawtext (event, QP) #自定义的绘画方法        qp.end ()

QtGui.QPainterClass is responsible for all low-level paintings.

All the painting methods to be put in begin() andend() 方法之间。当然，这里我们放的是自定义的drawText()方法

The above code together is this:

    def paintevent (Self, event):         = Qtgui.qpainter ()        qp.begin (self)        self.drawtext (event, QP)#自定义的绘画方法        qp.end () 

in the next few articles on painting, this piece of code is almost unchanged .

Of course, the change is the custom DrawText method:

    def DrawText (Self, event, QP):        qp.setpen (Qtgui.qcolor (168, 3)) #设置笔的颜色        Qp.setfont (Qtgui.qfont (  'decorative')) #设置字体        qp.drawtext (Event.rect (), QtCore.Qt.AlignCenter , Self.text) #画出文本

The final drawing.py is this:

#-*-coding:utf-8-*-"""Module implementing Drawing."""ImportSYS fromPyQt5ImportQtgui, Qtcore fromPyqt5.qtwidgetsImportQdialog, Qapplication fromUi_drawingImportui_drawingclassDrawing (Qdialog, ui_drawing):def __init__(Self, parent=None): Super (Drawing, self).__init__(parent) self.setupui (self) self.text='\u041b\u0435\u0432 \u041d\u0438\u043a\u043e\u043b\u0430\u0435\u0432\u0438\u0447 \u0422\u043e\u043b\u0441\ u0442\u043e\u0439: \n\u0410\u043d\u043d\u0430 \u041a\u0430\u0440\u0435\u043d\u0438\u043d\u0430'    defpaintevent (Self, event): QP=Qtgui.qpainter () qp.begin (self) Self.drawtext (event, QP) qp.end ()defDrawText (Self, event, QP): Qp.setpen (Qtgui.qcolor (168, 34, 3)) Qp.setfont (Qtgui.qfont ('Decorative', 20) ) Qp.drawtext (Event.rect (), QtCore.Qt.AlignCenter, Self.text)if __name__=='__main__': App=qapplication (SYS.ARGV) dlg=Drawing () dlg.show () Sys.exit (App.exec_ ())

Eric6 and PyQt5 for Python's Extreme GUI Programming (series)----Drawing (Drawing) (1)--Write text