Qt paint brush and paint brush

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

# Python: 2.x

_ Author _ = 'admin'

# Paint brush and paint brush: qbrush defines the filling mode of qpainter and has attributes such as style, color, gradient, and texture.

# The style () of the paint brush defines the filling style, which is enumerated using QT: brushstyle. The default value is QT: nobrush, that is, no filling is performed.

# The color () of the paint brush defines the color of the fill mode. This color can be a color constant predefined by QT, that is

# QT: globalcolor, which can also be any qcolor object. Gradient () of the paint brush defines gradient filling. This attribute is only available when the style is QT: lineargradientpattern,

# QT: radialgradientpattern or QT: conicalgradientpattern. Gradient

# Qgradient object representation. Qt provides three gradient types: qlineargradient, qconicalgradient, and

# Qradialgradient, which are subclasses of qgradient. We can use the following code snippet to define

# Gradient painter

# Learning address: http://blog.csdn.net/lpp0900320123/article/details/25246873

From pyqt4.qtgui import *

From pyqt4.qt import *

From pyqt4 import qtgui, qtcore

From pyqt4.qtcore import *

Import sys

Class painterd (qwidget ):

Def _ init _ (Self ):

Super (painterd, self). _ init __()

Self. Resize (200,100)

Self. setwindowtitle ('paint ')

# Paint Brush

Def paintevent (self, e ):

Paint = qpainter (Self)

Paint. drawline (100,100,) # Straight Line

Pen = qpen (QT. Green, 5, QT. dashdotline, QT. flatcap, QT. roundjoin)

Paint. setpen (PEN) # use a paint brush

Rectanglen = qrectf (70 .., 40 .., 80 .., 60 .)

Start1 = 30*16

Start2 = 120*16

# Draw an arc

Paint. drawarc (rectanglen, start1, start2)

# Redefinition of paint brushes

Pen. setwidth (2)

Pen. setstyle (QT. solidline)

Paint. setpen (PEN)

Paint. drawrect (50, 50, 20,100)

Class painterd1 (qwidget ):

Def _ init _ (Self ):

Super (painterd1, self). _ init __()

Self. Resize (200,100)

Self. setwindowtitle ('paint ')

# Use painter

Def paintevent (self, qpaintevent ):

Paint = qpainter (Self)

Brush = qbrush (qcolor (255,), QT. dense4pattern) # create a brush

Paint. setbrush (Brush) # use a brush

Paint. drawellipse (, 50, 50) # elliptical

# Setting textures

Brush. settexture (qpixmap (r 'I/a.png '))

# Use four points to draw a polygon

Paint. drawpolygon (qpoint (150,100), qpoint (300,150), qpoint (350,250), qpoint (100,300 ))

Def main ():

APP = qtgui. qapplication (SYS. argv)

Ex = painterd1 ()

Ex. Show ()

Sys.exit(app.exe C _())

If _ name _ = '_ main __':

Main ()

:

Other friends do the example, you can learn: http://blog.csdn.net/cxm19830125/article/details/21733377