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Viewing changes to qreator/QreatorWindow.py

  • Committer: David Planella
  • Date: 2012-01-18 19:35:20 UTC
  • Revision ID: david.planella@ubuntu.com-20120118193520-ciu0erfgqbxlaaxl
Added a file chooser to save the resulting image. Started playing with fade ins.

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qreator/QreatorWindow.py
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### END LICENSE
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import gettext
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#from gettext import gettext as _
 
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from gettext import gettext as _
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gettext.textdomain('qreator')
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from gi.repository import Gtk, Gdk # pylint: disable=E0611
 
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import gi
 
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gi.require_version('Gdk', '3.0')
 
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gi.require_version('Gtk', '3.0')
 
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from gi.repository import Gtk, Gdk, GLib # pylint: disable=E0611
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import cairo
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import logging
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logger = logging.getLogger('qreator')
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        self.ui.notebook1.set_show_tabs(False)
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        self.ui.entry1.connect('changed', self.on_entry1_changed)
 
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        ## alpha is starting transparency
 
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        self.alpha = 0
 
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        ## delta is amount to increase alpha
 
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        self.delta = 0.01
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    def on_toolbuttonHome_clicked(self, widget, data=None):
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        self.ui.notebook1.set_current_page(PAGE_HOME)
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        if not self.surface:
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            return
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        # We cannot write directly from the surface, as the
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        # Surface.write_to_png() method writes the image in the original
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        # size returned by qrencode (i.e. non-scaled), and the SurfacePattern
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        # does not have any methods to write to disk.
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        # So we read the contents from the Gtk.DrawingArea, put them into a
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        # Gdk.Pixbuf and use its 'savev' method to write to disk.
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        pixbuf = self.get_pixbuf_from_drawing_area()
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        pixbuf.savev(r'/tmp/somefile.png', 'png', [], [])
 
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        dialog = Gtk.FileChooserDialog(_("Please choose a file"), self,
 
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            Gtk.FileChooserAction.SAVE,
 
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            (Gtk.STOCK_CANCEL, Gtk.ResponseType.CANCEL,
 
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             Gtk.STOCK_SAVE, Gtk.ResponseType.OK))
 
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        filter_png = Gtk.FileFilter()
 
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        filter_png.set_name(_("PNG images"))
 
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        filter_png.add_mime_type("image/png")
 
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        dialog.add_filter(filter_png)
 
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        response = dialog.run()
 
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        if response == Gtk.ResponseType.OK:
 
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            # We cannot write directly from the surface, as the
 
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            # Surface.write_to_png() method writes the image in the original
 
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            # size returned by qrencode (i.e. non-scaled), and the
 
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            # SurfacePattern does not have any methods to write to disk.
 
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            # So we read the contents from the Gtk.DrawingArea, put them into
 
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            # a Gdk.Pixbuf and use its 'savev' method to write to disk.
 
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            pixbuf = self.get_pixbuf_from_drawing_area()
 
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            pixbuf.savev(dialog.get_filename(), 'png', [], [])
 
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        dialog.destroy()
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    def on_toolbuttonCopy_clicked(self, widget, data=None):
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        if not self.surface:
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        return (drawing_area_width / 2 - image_width / 2,
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                drawing_area_height / 2 - image_height / 2)
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    def fadeImage(self):
 
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        self.ui.drawingarea1.queue_draw()
 
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    def on_drawingarea1_draw(self, widget, ctx, data=None):
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        text = self.ui.entry1.get_text()
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        if text == '':
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            return
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        version, size, im = qrencode.encode(text)
 
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        # --------------- Cairo surface conversion ---------------------------
 
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        # See http://cairographics.org/pythoncairopil/ and
 
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        # http://mail.python.org/pipermail/image-sig/2005-October/003604.html
 
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        # http://mail.gnome.org/archives/gtkmm-list/2007-May/msg00111.html
 
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        im = im.convert('RGBA')
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        # --------------- Cairo surface conversion ---------------------------
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        # See http://cairographics.org/pythoncairopil/
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        # and http://mail.python.org/pipermail/image-sig/2005-October/003604.html
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        bytearr = array.array('B', im.tostring())
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        height, width = im.size
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        # Set resampling filter
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        imgpat.set_filter(cairo.FILTER_NEAREST)
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        # Center the image
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        centered_width, centered_height = \
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            self.get_centered_coordinates(widget, self.surface)
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        ctx.translate(centered_width, centered_height)
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        ctx.set_source(imgpat)
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        # Render the image
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        ctx.paint()
 
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        #ctx.paint()
 
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        ctx.paint_with_alpha(self.alpha)
 
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        self.alpha += self.delta
 
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        if self.alpha >= 1:
 
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            self.alpha = 0
 
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            return False
 
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        else:
 
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            GLib.timeout_add(50, self.fadeImage)