python - In pygtk, how can I combine font selection and color selection dialogs in one dialog? -

-

i'm using pygtk , searches best way combine font , color dialogs in one, pythonic way ?

you must change 'base' , 'text' parts of widget's style. can edit 'foreground' property. useful shorthand methods change style properties inherited gtk.widget are: 

widget.modify_fg(state, color) widget.modify_bg(state, color) widget.modify_base(state, color) widget.modify_text(state, color)

windowless widgets such gtk.label, gtk.button, gtk.paned, gtk.frame, etc, (see faq 3.5) despite inheriting gtk.widget don't allow changing background , base color properties don't exist them. if want them need insert widget inside gtk.eventbox adds properties. example: 

import gtk  window = gtk.window(gtk.window_toplevel) window.connect("destroy", gtk.mainquit)  label = gtk.label("one, two, testing...") eb = gtk.eventbox() eb.add(label) eb.modify_bg(gtk.state_normal, gtk.gdk.color_parse("blue")) window.add(eb)  window.show_all() gtk.main()

also suggest read gtk.gdk.window — on-screen display areas in target window system.

by other hand, pygtk have dialogs change colors , change or select fonts.

example 1 : change fonts

import gtk import pango class pyapp(gtk.window):      def __init__(self):         gtk.window.__init__(self)         self.set_size_request(300, 150)         self.set_position(gtk.win_pos_center)         self.connect("destroy", gtk.main_quit)         self.set_title("font selection dialog")           self.label = gtk.label("the victory on love flight.")         button = gtk.button("select font")         button.connect("clicked", self.on_clicked)          fix = gtk.fixed()         fix.put(button, 100, 30)         fix.put(self.label, 30, 90)         self.add(fix)          self.show_all()      def on_clicked(self, widget):         fdia = gtk.fontselectiondialog("select font name")         response = fdia.run()          if response == gtk.response_ok:             font_desc = pango.fontdescription(fdia.get_font_name())             if font_desc:                 self.label.modify_font(font_desc)          fdia.destroy() pyapp() gtk.main()

example 2:change color of label

 import gtk class pyapp(gtk.window):      def __init__(self):         super(pyapp, self).__init__()          self.set_size_request(300, 150)         self.set_position(gtk.win_pos_center)         self.connect("destroy", gtk.main_quit)         self.set_title("color selection dialog")           self.label = gtk.label("the victory on love flight.")         button = gtk.button("select color")         button.connect("clicked", self.on_clicked)          fix = gtk.fixed()         fix.put(button, 100, 30)         fix.put(self.label, 30, 90)         self.add(fix)          self.show_all()      def on_clicked(self, widget):         cdia = gtk.colorselectiondialog("select color")         response = cdia.run()          if response == gtk.response_ok:             colorsel = cdia.colorsel             color = colorsel.get_current_color()             self.label.modify_fg(gtk.state_normal, color)          cdia.destroy() pyapp() gtk.main()

hope can helps.


Popular posts from this blog

How to calculate SNR of signals in MATLAB? -

-
i've encountered simple, yet fundamental problem on calculating snr: there several signals : s1 = original , pure clean signal without noise. n1 = white gaussian noise going added s1. s2 = s1 + n1 (the noisy signal before performing noise-reduction algorithm) s3 = noise-reduced signal (after performing noise reduction algorithm) n2 = s3 - s1 (the amount of noise after performing noise-reduction algorithm) now want compare snr before , after performing noise-reduction algorithm. which signals should consider snr_before!? s1/n1 or s2/n1 ? which signals should consider snr_after!? s3/n1 or s3/n2 ? which commands or functions should use in matlab in order compute snr_before , snr_after? thanks billion putting time on helping me. what know calculating snr before : snrbeforenoise = mean( signal .^ 2 ) / mean( noise .^ 2 ); and snr after : residual_noise = signal - noise_reduced_signal; snr_after = mean( signal .^ 2 ) / mean( residual_noise .^ 2
Read more

c# - Attempting to upload to FTP: System.Net.WebException: System error -

-
i have api takes in xml , uploads files based on information in xml. uploads on schedule (also xml), , have tested surrounding , know works. i getting error 40% of time on first file attempt upload in each time cycle (time cycle = 45 minutes files, 30 minutes others). here code upload: try { loggerftp.log("uploading file: " + filename, false); // create request. ftpwebrequest request = (ftpwebrequest)webrequest.create(appsettingsftp.ftpurl + @"/" + filename); request.method = webrequestmethods.ftp.uploadfile; request.timeout = 6000000; //set 100 minutes //request.timeout = -1; //set infinite // add login credentials. request.credentials = new networkcredential(appsettingsftp.ftplogin, appsettingsftp.ftppassword); // grab file contents. streamreader sourcestream = new streamreader(appsettingsftp.uploadfiledirectory + filename); byte[] filecontents = encoding.utf8.getbytes(sourcestream.readtoend()); sourcest
Read more

ios - UISlider customization: how to properly add shadow to custom knob image -

-
Image
i need place custom knob image shadow uislider. far have image of 38x38, of there region defines shadow of knob. now while using image, when slide knob extreme ends actual knob not able cover end points, hence end points visible under transparent region of knob image this code using customize uislider uiimage *slidebtimg = [uiimage imagenamed:sliderknobimg]; [self.ratingslider setthumbimage:slidebtimg forstate:uicontrolstatenormal]; [self.ratingslider setthumbimage:slidebtimg forstate:uicontrolstatehighlighted]; how can implement custom knob shadow beneath it, covering end points?? look inside uislider.h , there methods let customize slider knob , track needed. (ios 2.0 , above) // lets subclass lay out track , thumb needed - (cgrect)minimumvalueimagerectforbounds:(cgrect)bounds; - (cgrect)maximumvalueimagerectforbounds:(cgrect)bounds; - (cgrect)trackrectforbounds:(cgrect)bounds; - (cgrect)thumbrectforbounds:(cgrect)bounds trackrect:(cgrect)rect value:
Read more