64 lines
1.7 KiB
Python
64 lines
1.7 KiB
Python
# Python imports
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import os
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# Lib imports
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import gi
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gi.require_version('Gtk', '3.0')
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from gi.repository import Gtk
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from gi.repository import Gio
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# Application imports
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class PreviewPane(Gtk.Image):
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def __init__(self):
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super(PreviewPane, self).__init__()
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self.pixbuf = None
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self._setup_styling()
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self._setup_signals()
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self._subscribe_to_events()
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self._load_widgets()
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self.show_all()
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def _setup_styling(self):
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self.set_vexpand(True)
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self.set_hexpand(True)
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def _setup_signals(self):
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...
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def _subscribe_to_events(self):
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event_system.subscribe("set_image_to_view", self.set_image_to_view)
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event_system.subscribe("unset_image_preview", self.unset_image_preview)
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def _load_widgets(self):
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self.unset_image_preview()
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def set_image_to_view(self, image_file):
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if not image_file:
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return
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images_dir = settings.get_screenshots_dir()
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path = os.path.join(images_dir, image_file)
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self.pixbuf = Gtk.Image.new_from_file(path).get_pixbuf()
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self.set_from_pixbuf( self.scale_to_container(self.pixbuf) )
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def scale_to_container(self, pixbuf):
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rect = self.get_parent().get_parent().get_allocated_size().allocation
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pxw = pixbuf.get_width()
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pxh = pixbuf.get_height()
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h = rect.height
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w = (pxw * h) / pxh
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return pixbuf.scale_simple(w, h, 2) # 2 = BILINEAR and is best by default
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def unset_image_preview(self):
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self.pixbuf = None
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pixbuf = Gtk.Image.new_from_icon_name("gtk-missing-image", 4).get_pixbuf()
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self.set_from_pixbuf(pixbuf)
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