pgconsole/dataview.py
author Radek Brich <radek.brich@devl.cz>
Tue, 16 Aug 2011 23:53:54 +0200
changeset 10 f3a1b9792cc9
child 76 3a41b351b122
permissions -rw-r--r--
Added pgconsole. It is my older project, a GUI query console. It uses GTK+ and asynchronous queries.
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f3a1b9792cc9 Added pgconsole. It is my older project, a GUI query console. It uses GTK+ and asynchronous queries.
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import gtk, gobject, pango
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from cgi import escape
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class DataView(gtk.ScrolledWindow):
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    def __init__(self):
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        super(DataView, self).__init__()
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        sw = self
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        sw.set_policy(gtk.POLICY_AUTOMATIC, gtk.POLICY_AUTOMATIC)
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        sw.set_shadow_type(gtk.SHADOW_ETCHED_IN)
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        self.treeview = gtk.TreeView(gtk.ListStore(str))
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        self.treeview.get_selection().set_mode(gtk.SELECTION_MULTIPLE)
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        self.treeview.set_property("rubber-banding", True)
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        sw.add(self.treeview)
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    def load_data(self, names, rows):
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        x = [str] * (len(names) + 1)
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        liststore = gtk.ListStore(*x)
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        for c in self.treeview.get_columns():
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            self.treeview.remove_column(c)
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        tvcolumn = gtk.TreeViewColumn()
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        cell = DataViewCellRenderer()
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        cell.set_property('head', True)
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        tvcolumn.pack_start(cell, True)
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        tvcolumn.set_property('resizable', True)
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        #tvcolumn.set_property('sizing', gtk.TREE_VIEW_COLUMN_FIXED)
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        tvcolumn.set_attributes(cell, text=0)
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        tvcolumn.set_min_width(2)
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        self.treeview.append_column(tvcolumn)
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        i = 0
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        for c in names:
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            i += 1
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            typename = c[1]
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            title = '<b>%s</b>' % escape(c[0])
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            if typename:
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                title += '\n<span size="small">%s</span>' % typename
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            tvcolumn = gtk.TreeViewColumn()
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            cell = DataViewCellRenderer()
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            lab = gtk.Label()
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            lab.set_use_underline(False)
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            lab.set_markup(title)
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            lab.show()
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            tvcolumn.set_widget(lab)
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            tvcolumn.set_property('resizable', True)
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            tvcolumn.pack_start(cell, True)
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            tvcolumn.set_attributes(cell, text=i)
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            self.treeview.append_column(tvcolumn)
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        self.treeview.set_model(liststore)
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        i = 0
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        for row in rows:
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            i += 1
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            liststore.append([i]+list(row))
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class DataViewCellRenderer(gtk.GenericCellRenderer):
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    __gtype_name__ = 'DataViewCellRenderer'
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    __gproperties__ = {
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        'text': (gobject.TYPE_STRING, None, None, '', gobject.PARAM_READWRITE),
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        'head': (gobject.TYPE_BOOLEAN, None, None, False, gobject.PARAM_READWRITE)}
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    def __init__(self):
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        gtk.GenericCellRenderer.__init__(self)
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        self._props = {'text' : '', 'head' : False}
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    def do_set_property(self, pspec, value):
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        if not pspec.name in self._props:
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            raise AttributeError, 'Unknown property: %s' % pspec.name
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        self._props[pspec.name] = value
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    def do_get_property(self, pspec):
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        return self._props[pspec.name]
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    def on_get_size(self, widget, cell_area):
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        if cell_area == None:
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            pangoctx = widget.get_pango_context()
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            layout = pango.Layout(pangoctx)
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            layout.set_width(-1)
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            layout.set_text(self.get_property('text') or 'NULL')
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            w,h = layout.get_pixel_size()
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            return (0, 0, w+5, 20)
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        x = cell_area.x
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        y = cell_area.x
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        w = cell_area.width
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        h = cell_area.height
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        return (x,y,w,h)
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    def on_render(self, window, widget, background_area, cell_area, expose_area, flags):
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        x = background_area.x
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        y = background_area.y
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        w = background_area.width
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        h = background_area.height
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        ctx = window.cairo_create()
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        ctx.set_line_width(0.4)
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        ctx.set_source_rgb(0, 0, 0)
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        ctx.move_to(x+w-1.5, y-0.5)
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        ctx.line_to(x+w-1.5, y+h-0.5)
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        ctx.line_to(x-0.5, y+h-0.5)
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        ctx.stroke()
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        ctx.set_source_rgb(1, 1, 1)
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        ctx.move_to(x+w-0.5, y-0.5)
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        ctx.line_to(x+w-0.5, y+h-0.5)
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        ctx.stroke()
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        pangoctx = widget.get_pango_context()
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        layout = pango.Layout(pangoctx)
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        text = self.get_property('text')
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        head = self.get_property('head')
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        if head:
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            layout.set_markup('<b>%s</b>' % text)
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        else:
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            if text is None:
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                layout.set_markup('<span foreground="gray">NULL</span>')
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            else:
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                layout.set_text(text)
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        widget.style.paint_layout(window, gtk.STATE_NORMAL, True,
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                                cell_area, widget, '',
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                                cell_area.x, cell_area.y,
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                                layout)
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