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#!/usr/bin/python
"""GUI stuff."""
from schedule import *
from renderer import *
import pygtk
import gtk
import gobject
class GraphArea(gtk.DrawingArea):
DAREA_WIDTH_REQ = 500
DAREA_HEIGHT_REQ = 300
HORIZ_PAGE_SCROLL_FACTOR = 4.8
HORIZ_STEP_SCROLL_FACTOR = 0.8
VERT_PAGE_SCROLL_FACTOR = 3.0
VERT_STEP_SCROLL_FACTOR = 0.5
def __init__(self, renderer):
super(GraphArea, self).__init__()
self.renderer = renderer
self.cur_x = 0
self.cur_y = 0
self.width = 0
self.height = 0
self.now_selected = []
self.set_set_scroll_adjustments_signal('set-scroll-adjustments')
self.add_events(gtk.gdk.BUTTON_PRESS_MASK | gtk.gdk.POINTER_MOTION_MASK | gtk.gdk.POINTER_MOTION_HINT_MASK)
self.connect('expose-event', self.expose)
self.connect('size-allocate', self.size_allocate)
self.connect('set-scroll-adjustments', self.set_scroll_adjustments)
self.connect('button-press-event', self.button_press)
self.connect('motion-notify-event', self.motion_notify)
self.set_size_request(GraphArea.DAREA_WIDTH_REQ, GraphArea.DAREA_HEIGHT_REQ)
def expose(self, widget, event, data=None):
ctx = widget.window.cairo_create()
graph = self.renderer.get_graph()
graph.update_view(self.cur_x, self.cur_y, self.width, self.height, ctx)
graph.render_surface(self.renderer.get_schedule())
def set_scroll_adjustments(self, widget, horizontal, vertical, data=None):
graph = self.renderer.get_graph()
width = graph.get_width()
height = graph.get_height()
self.horizontal = horizontal
self.vertical = vertical
self.config_scrollbars(self.cur_x, self.cur_y)
self.horizontal.connect('value-changed', self.horizontal_value_changed)
self.vertical.connect('value-changed', self.vertical_value_changed)
def horizontal_value_changed(self, adjustment):
self.cur_x = min(adjustment.value, self.renderer.get_graph().get_width())
self.cur_x = max(adjustment.value, 0.0)
rect = gtk.gdk.Rectangle(0, 0, self.width, self.height)
self.window.invalidate_rect(rect, True)
def vertical_value_changed(self, adjustment):
self.cur_y = min(adjustment.value, self.renderer.get_graph().get_height())
self.cur_y = max(adjustment.value, 0.0)
rect = gtk.gdk.Rectangle(0, 0, self.width, self.height)
self.window.invalidate_rect(rect, True)
def size_allocate(self, widget, allocation):
self.width = allocation.width
self.height = allocation.height
self.config_scrollbars(self.cur_x, self.cur_y)
def config_scrollbars(self, hvalue, vvalue):
graph = self.renderer.get_graph()
width = graph.get_width()
height = graph.get_height()
if self.horizontal is not None:
self.horizontal.set_all(hvalue, 0.0, width, graph.get_attrs().maj_sep * GraphArea.HORIZ_STEP_SCROLL_FACTOR,
graph.get_attrs().maj_sep * GraphArea.HORIZ_PAGE_SCROLL_FACTOR, self.width)
if self.vertical is not None:
self.vertical.set_all(vvalue, 0.0, height, graph.get_attrs().y_item_size * GraphArea.VERT_STEP_SCROLL_FACTOR,
graph.get_attrs().y_item_size * GraphArea.VERT_PAGE_SCROLL_FACTOR, self.height)
def _find_max_layer(self, regions):
max_layer = Canvas.BOTTOM_LAYER
for event in regions:
if event.get_layer() > max_layer:
max_layer = event.get_layer()
return max_layer
def motion_notify(self, widget, motion_event, data=None):
msg = None
graph = self.renderer.get_graph()
just_selected = graph.get_selected_regions(motion_event.x, motion_event.y)
if not just_selected:
msg = ''
the_event = None
else:
max_layer = self._find_max_layer(just_selected)
for event in just_selected:
if event.get_layer() == max_layer:
the_event = event
break
msg = str(the_event)
self.emit('update-event-description', the_event, msg)
def button_press(self, widget, button_event, data=None):
graph = self.renderer.get_graph()
if button_event.button == 1:
just_selected = graph.get_selected_regions(button_event.x, button_event.y)
max_layer = self._find_max_layer(just_selected)
# only select those events which were in the top layer (it's
# not intuitive to click something and then have something
# below it get selected). Also, clicking something that
# is selected deselects it
new_now_selected = {}
for event in just_selected:
if event.get_layer() == max_layer:
if not event.is_selected():
new_now_selected[event] = None
event.set_selected(not event.is_selected())
break
for event in self.now_selected:
if event not in new_now_selected:
event.set_selected(False)
self.now_selected = new_now_selected
rect = gtk.gdk.Rectangle(0, 0, self.width, self.height)
self.window.invalidate_rect(rect, True)
class GraphWindow(gtk.ScrolledWindow):
def __init__(self, renderer):
super(GraphWindow, self).__init__(None, None)
self.garea = GraphArea(renderer)
self.add(self.garea)
self.garea.show()
def get_graph_area(self):
return self.garea
class MainWindow(object):
def __init__(self, renderer):
self.window = gtk.Window(gtk.WINDOW_TOPLEVEL)
self.window.connect('delete_event', self.delete_event)
self.window.connect('destroy', self.destroy)
self.vbox = gtk.VBox(False, 0)
self.gwindow = GraphWindow(renderer)
self.gwindow.get_graph_area().connect('update-event-description',
self.update_event_description)
self.gwindow.show()
self.desc_label = gtk.Label('')
self.desc_label.set_justify(gtk.JUSTIFY_LEFT)
self.desc_label.show()
self.vbox.pack_start(self.gwindow, True, True, 0)
self.vbox.pack_start(self.desc_label, False, False, 0)
self.vbox.show()
self.window.add(self.vbox)
self.window.show()
def update_event_description(self, widget, event, msg):
self.desc_label.set_text(msg)
def delete_event(self, widget, event, data=None):
return False
def destroy(self, widget, data=None):
gtk.main_quit()
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