Marco Islas Blog

Playing with Nokia S60.

markuz@islascruz.org (Marco Antonio Islas Cruz) — Mon, 08 Feb 2010 00:41:25 -0600

Me :-)

Originally uploaded by markuz

I've just started playing with Nokia S60v5. I'm currently using Python to develop some learning stuff. Remember, Symbian is now Open Source, a little bit late, but Open Source at the end.

Right now

markuz@islascruz.org (Marco Antonio Islas Cruz) — Sat, 30 Jan 2010 04:29:48 -0600

Right now

Originally uploaded by markuz

3:20 in the morning and I'm working, I need to finish a program that I wrote almost a year ago, that was a Demo program and in 4 days (right now just 2) should be production ready!... I'm gonna need a double Monster dosis.

Monster

markuz@islascruz.org (Marco Antonio Islas Cruz) — Fri, 29 Jan 2010 13:08:55 -0600

Monster

Originally uploaded by markuz

Working :-)

I finally killed Raam

markuz@islascruz.org (Marco Antonio Islas Cruz) — Thu, 28 Jan 2010 11:51:41 -0600

I finally killed Raam

Originally uploaded by markuz

The past two weeks I have been playing Gears of War on my spare time which is becoming less everyday.
Well, I had never played Gears even when it is a game that has been arround by more or less two years. It's a little addictive game, more when you are in multi-player mode which I enjoyed playing with my brother.
Yesterday I finally beat Raam, the last boss in the game, to me, was very very difficult to beat because I do it in single player mode and the fucking Dom does nothing.
I'm checking for GoW 2 right now :-).

Which one??

markuz@islascruz.org (Marco Antonio Islas Cruz) — Wed, 20 Jan 2010 10:30:41 -0600

19012010.jpg

Originally uploaded by markuz

Sofia is trying to decide which one is about to be in her mouth. In the right hand a cookie, in the left hand the belt

Home office..

markuz@islascruz.org (Marco Antonio Islas Cruz) — Thu, 14 Jan 2010 20:16:18 -0600

Home office..

Originally uploaded by markuz

This is my new "home office", very similar to the old one I had when I start working for ICT Consulting.
This time the linksys is not here and the mango became a wireless mouse, Cucusa became into Volvagia, I also have a hammer, just in case everything stop working or I get really really pissed.

Christine 0.6.1

markuz@islascruz.org (Marco Antonio Islas Cruz) — Wed, 13 Jan 2010 22:01:02 -0600

I just want to let you know that Christine 0.6.1 is in the net now You can download the sources from here:

Binary Packages

Ubuntu: https://launchpad.net/~markuz/+archive/ppa (if you already set the ppa in your apt sources list then wait for the update soon :-))
Windows: http://sourceforge.net/projects/christine/files/christine/0.6.1/Christine-0.6.1.exe

They are supposed to be 2Mb

markuz@islascruz.org (Marco Antonio Islas Cruz) — Tue, 12 Jan 2010 20:24:28 -0600

They are supposed to be 2Mb

Originally uploaded by markuz

I just want to say Fuck you TelMex!!!!

Fingers

markuz@islascruz.org (Marco Antonio Islas Cruz) — Mon, 11 Jan 2010 10:59:00 -0600

Fingers

Originally uploaded by markuz

Yeap, my fingers can feel the cold too. The last days have been a very cold days here in my town. The problem is that my fingers get frozen and I then I can't write anything.
I cut my gloves, only the tip to allow my fingers tip to touch the keyboard.

Drawing with Cairo without flicker

markuz@islascruz.org (Marco Antonio Islas Cruz) — Wed, 30 Dec 2009 01:56:40 -0600

(py)Gtk provides a quick way to get a cairo context using the gtk.DrawingArea widget, this widget let you draw everythin you want into your application using the widget.window drawable area.

It help you to create custom widgets (you can also use this with buttons or any other widget), the problem with the usage of this context is that everything you ask it to draw it will draw it as soon as it can.

If you draw several lines or you draw the same thing very often (an animation for example) your draw may flick, making your application looks ugly.

There is an easy way to avoid this, using a surface to draw and when you are done put your draw into the context using the set_source_surface method.

In the next example you have a windows, with a custom "progressbar" using gtk.DrawingArea and a slide that is supposed to change the value of the progressbar but I'm so lazy to move a slide that let the computer do the work :-).

The trick is this part of the code:

        def do_expose(self, widget, event):

                x,y,w,h = self.allocation

                surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, w,h)

                context = cairo.Context(surface)

                #cleaning

                rectangle = context.rectangle(x,y,w,h)

                context.set_source_rgb(1,1,1)

                context.fill()

                value = (self.value / 100)*w

                rectangle = context.rectangle(x,y,value,h)

                context.set_source_rgb(0.2,0.5,0.8)

                context.fill()

                cr = self.window.cairo_create()

                cr.set_source_surface(surface)

                cr.paint()

                return True

We create a surface using cairo.ImageSurface and then create a cairo context from it, draw on that context and at the end use the widget.window.cairo_create to create a context for the drawing_area and use set_source_surface to get all the stuff
we drew into the DrawingArea context. At the en just paint it.

#!/usr/bin/env python

import gtk

import cairo

import random

import gobject

class progressbar(gtk.DrawingArea):

        def __init__(self):

                gtk.DrawingArea.__init__(self)

                self.connect('expose-event', self.do_expose)

                self.value = 0

                self.set_property('events', gtk.gdk.EXPOSURE_MASK)

        def do_expose(self, widget, event):

                x,y,w,h = self.allocation

                surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, w,h)

                context = cairo.Context(surface)

                #cleaning

                rectangle = context.rectangle(x,y,w,h)

                context.set_source_rgb(1,1,1)

                context.fill()

                value = (self.value / 100)*w

                rectangle = context.rectangle(x,y,value,h)

                context.set_source_rgb(0.2,0.5,0.8)

                context.fill()

                cr = self.window.cairo_create()

                cr.set_source_surface(surface)

                cr.paint()

                return True

        def set_value(self, value):

                self.value = value

                self.emit('expose-event', gtk.gdk.Event(gtk.gdk.EXPOSE))

def change_value(scale, progres):

        progress.set_value(scale.get_value())

def random_change(scale):

        r = random.randint(50,100)

        scale.set_value(r)

        return True

window = gtk.Window()

window.set_size_request(640,480)

window.set_position(gtk.WIN_POS_CENTER)

window.connect('destroy', gtk.main_quit)

vbox = gtk.VBox()

window.add(vbox)

progress = progressbar()

progress.set_size_request(100,100)

vbox.pack_start(progress, False, False, 2)

adjustment = gtk.Adjustment(value=0, lower=0, upper=100)

scale = gtk.HScale(adjustment)

scale.connect('value-changed', change_value, progress)

vbox.pack_start(scale, False, False, 2)

gobject.idle_add(random_change, scale)

window.show_all()

gtk.main()