Pyqt learning: Setting font, font size, and other format attributes (provided by netizens)

#-*-Coding: UTF-8 -*-

From pyqt4.qtgui import *

From pyqt4.qtcore import *

Import sys

 

Qtextcodec. setcodecfortr (qtextcodec. codecforname ("utf8 "))

 

Class mainwindow (qmainwindow ):

Def _ init _ (self, parent = none ):

Super (mainwindow, self). _ init _ (parent)

Self. setwindowtitle (self. tr ("Set Font, font size, and other format attributes "))

Self. Text = qtextedit ()

Self. setcentralwidget (self. Text );

# Font

Self. toolbar = self. addtoolbar ("font ")

Self. label1 = qlabel (self. tr ("Font :"))

Self. fontbox = qfontcombobox ()

Self. fontbox. setfontfilters (qfontcombobox. scalablefonts );

Self. toolbar. addwidget (self. label1)

Self. toolbar. addwidget (self. fontbox)

# Font size

Self. label2 = qlabel (self. tr ("number :"))

Self. sizebox = qcombobox ()

# Print Dir (self. sizebox)

Self. toolbar. addwidget (self. label2)

Self. toolbar. addwidget (self. sizebox)

Self. DB = qfontdatabase ()

For I in self. DB. standardsizes ():

Self. sizebox. additem (qstring. Number (I ))

Self. toolbar. addseparator ();

# Bold, italic, underline, and color

Self. boldbtn = qtoolbutton ()

Self. boldbtn. seticon (qicon ("image/bold.png "))

Self. boldbtn. setcheckable (true)

Self. toolbar. addwidget (self. boldbtn)

Self. italicbtn = qtoolbutton ()

Self. italicbtn. seticon (qicon ("image/italic.png "))

Self. italicbtn. setcheckable (true)

Self. toolbar. addwidget (self. italicbtn)

Self. underbtn = qtoolbutton ()

Self. underbtn. seticon (qicon ("image/underline.png "))

Self. underbtn. setcheckable (true)

Self. toolbar. addwidget (self. underbtn)

Self. toolbar. addseparator ()

Self. colorbtn = qtoolbutton ()

Self. colorbtn. seticon (qicon ("image/color.png "))

Self. toolbar. addwidget (self. colorbtn)

# Signal and slot Functions

Self. fontbox. Activated. Connect (self. slotfont)

Self. sizebox. Activated. Connect (self. slotsize)

Self. boldbtn. clicked. Connect (self. slotbold)

Self. italicbtn. clicked. Connect (self. slotitalic)

Self. underbtn. clicked. Connect (self. slotunder)

Self. colorbtn. clicked. Connect (self. slotcolor)

Self. Text. currentcharformatchanged. Connect (self. slotcurrentformatchanged)

Self. FMT = qtextcharformat ()

Def slotfont (Self ):

Self. f = self. fontbox. currentfont (). Family ()

Self. FMT. setfontfamily (self. f)

Self. cursor = self. Text. textcursor ()

If (self. cursor. hasselection () is false ):

Self. cursor. Select (qtextcursor. wordundercursor)

Self. cursor. mergecharformat (self. FMT)

Self. Text. mergecurrentcharformat (self. FMT)

Def slotsize (Self ):

Self. num = self. sizebox. currenttext ()

Self. FMT. setfontpointsize (self. Num. tofloat () [0])

Self. Text. mergecurrentcharformat (self. FMT)

Def slotbold (Self ):

If self. boldbtn. ischecked ():

Self. FMT. setfontpointsize (qfont. Bold)

Else:

Self. FMT. setfontpointsize (qfont. Normal)

Self. Text. mergecurrentcharformat (self. FMT)

Def slotitalic (Self ):

If self. italicbtn. ischecked ():

If self. FMT. fontitalic () is false:

Self. FMT. setfontitalic (true)

Else:

Self. FMT. setfontitalic (false)

Self. Text. mergecurrentcharformat (self. FMT)

Def slotunder (Self ):

Self. FMT. setfontunderline (self. underbtn. ischecked ())

Self. Text. mergecurrentcharformat (self. FMT)

Def slotcolor (Self ):

Self. Color = qcolordialog. getcolor (QT. Red)

If (self. color. isvalid ()):

Self. FMT. setforeground (self. color)

Self. Text. mergecurrentcharformat (self. FMT)

Def slotcurrentformatchanged (Self ):

Self. fontbox. setcurrentindex (self. fontbox. findtext (self. FMT. fontfamily ()))

Self. sizebox. setcurrentindex (self. sizebox. findtext (qstring. Number (self. FMT. fontpointsize ())))

Self. boldbtn. setchecked (self. FMT. Font (). Bold ())

Self. italicbtn. setchecked (self. FMT. fontitalic ())

Self. underbtn. setchecked (self. FMT. fontunderline ())

APP = qapplication (SYS. argv)

Main = mainwindow ()

Main. Show ()

App.exe C _()

 

Pyqt learning: Setting font, font size, and other format attributes (provided by netizens)