5626a6c182
Detecting if the treeview is scrolling we can improve the performance of the CellRendererIcon by avoiding unneeded calculations. The example scrollingdetector.py shows how this can be used. The changes are backward compatible. Signed-off-by: Manuel Quiñones <manuel.por.aca@gmail.com> Signed-off-by: Gonzalo Odiard <godiard@sugarlabs.org>
59 lines
1.5 KiB
Python
59 lines
1.5 KiB
Python
import os
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import time
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from gi.repository import Gtk
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from sugar3.graphics import style
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from sugar3.graphics.icon import CellRendererIcon
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from sugar3.graphics.xocolor import XoColor
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from sugar3.graphics.scrollingdetector import ScrollingDetector
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import common
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test = common.Test()
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test.show()
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model = Gtk.ListStore(str)
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data_dir = os.getenv('GTK_DATA_PREFIX', '/usr/')
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iconlist = os.listdir(os.path.join(data_dir,
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'share/icons/sugar/scalable/actions/'))
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print "Displaying %s icons" % len(iconlist)
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for icon in iconlist:
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icon = os.path.basename(icon)
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icon = icon[:icon.find('.')]
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model.append([icon])
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scrolled = Gtk.ScrolledWindow()
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scrolled.set_size_request(800, 800)
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treeview = Gtk.TreeView()
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treeview.set_model(model)
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scrolled.add(treeview)
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test.pack_start(scrolled, True, True, 0)
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test.show_all()
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col = Gtk.TreeViewColumn()
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treeview.append_column(col)
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xo_color = XoColor('#FF0000,#00FF00')
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cell_icon = CellRendererIcon(treeview)
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cell_icon.props.width = style.GRID_CELL_SIZE
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cell_icon.props.height = style.GRID_CELL_SIZE
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cell_icon.props.size = style.STANDARD_ICON_SIZE
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cell_icon.props.xo_color = xo_color
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col.pack_start(cell_icon, expand=False)
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col.add_attribute(cell_icon, 'icon-name', 0)
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cell_text = Gtk.CellRendererText()
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col.pack_start(cell_text, expand=True)
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col.add_attribute(cell_text, 'text', 0)
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detector = ScrollingDetector(scrolled)
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detector.connect_treeview(treeview)
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if __name__ == '__main__':
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time_ini = time.time()
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common.main(test)
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