import logging from GstDebugViewer.Plugins import * import cairo import gtk def iter_model_reversed (model): count = model.iter_n_children (None) for i in xrange (count - 1, 0, -1): yield model[i] class LineFrequencySentinel (object): def __init__ (self, model): self.model = model def _search_ts (self, target_ts, first_index, last_index): model_get = self.model.get model_iter_nth_child = self.model.iter_nth_child col_id = self.model.COL_TIME while True: middle = (last_index - first_index) // 2 + first_index if middle == first_index: return last_index ts = model_get (model_iter_nth_child (None, middle), col_id)[0] if ts < target_ts: first_index = middle + 1 elif ts > target_ts: last_index = middle - 1 else: return middle def run_for (self, n): if n == 0: raise ValueError ("illegal value for n") model = self.model result = [] last_ts = None for row in iter_model_reversed (self.model): last_ts = row[model.COL_TIME] if last_ts: last_index = row.path[0] break if last_ts is None: return result step = int (float (last_ts) / float (n)) first_index = 0 target_ts = step old_found = 0 while target_ts < last_ts: found = self._search_ts (target_ts, first_index, last_index) result.append (found - old_found) old_found = found first_index = found target_ts += step ## count = 0 ## limit = step ## for row in self.model: ## ts = row[model.COL_TIME] ## if ts is None: ## continue ## if ts > limit: ## limit += step ## result.append (count) ## count = 0 ## count += 1 return (step, result,) class LineFrequencyWidget (gtk.DrawingArea): __gtype_name__ = "LineFrequencyWidget" def __init__ (self, sentinel = None): gtk.DrawingArea.__init__ (self) self.logger = logging.getLogger ("ui.density-widget") self.sentinel = sentinel self.sentinel_step = None self.sentinel_data = None self.__configure_id = None self.connect ("expose-event", self.__handle_expose_event) self.connect ("configure-event", self.__handle_configure_event) self.connect ("size-request", self.__handle_size_request) def set_sentinel (self, sentinel): self.sentinel = sentinel self.__redraw () def __redraw (self): if not self.props.visible: return x, y, w, h = self.get_allocation () self.offscreen = gtk.gdk.Pixmap (self.window, w, h, -1) self.__draw (self.offscreen) self.__update () def __update (self): if not self.props.visible: return gc = gtk.gdk.GC (self.window) self.window.draw_drawable (gc, self.offscreen, 0, 0, 0, 0, -1, -1) def update_position (self, start_ts, end_ts): self.__update () position1 = int (float (start_ts) / self.sentinel_step) position2 = int (float (end_ts) / self.sentinel_step) ctx = self.window.cairo_create () x, y, w, h = self.get_allocation () line_width = position2 - position1 if line_width <= 1: ctx.set_source_rgb (1., 0., 0.) ctx.set_line_width (1.) ctx.move_to (position1 + .5, 0) ctx.line_to (position1 + .5, h) ctx.stroke () else: ctx.set_source_rgba (1., 0., 0., .5) ctx.rectangle (position1, 0, line_width, h) ctx.fill () def find_indicative_time_step (self): MINIMUM_PIXEL_STEP = 32 time_per_pixel = self.sentinel_step return 32 # FIXME use self.sentinel_step and len (self.sentinel_data) def __draw (self, drawable): ctx = drawable.cairo_create () x, y, w, h = self.get_allocation () ctx.set_line_width (0.) ctx.rectangle (0, 0, w, h) ctx.set_source_rgb (1., 1., 1.) ctx.fill () ctx.new_path () ctx.set_line_width (1.) ctx.set_source_rgb (.95, .95, .95) for i in range (h // 16): y = i * 16 - .5 ctx.move_to (0, y) ctx.line_to (w, y) ctx.stroke () pixel_step = self.find_indicative_time_step () ctx.set_source_rgb (.9, .9, .9) for i in range (w // pixel_step): x = i * pixel_step - .5 ctx.move_to (x, 0) ctx.line_to (x, h) ctx.stroke () if self.sentinel_data is None and self.sentinel: if w > 15: self.logger.debug ("running sentinel for width %i", w) self.sentinel_step, self.sentinel_data = self.sentinel.run_for (w) else: return if self.sentinel_data is None: self.logger.debug ("not redrawing: no sentinel set") return from operator import add maximum = max (self.sentinel_data) heights = [h * float (d) / maximum for d in self.sentinel_data] ctx.move_to (0, h) ctx.set_source_rgb (0., 0., 0.) for i in range (len (heights)): ctx.line_to (i - .5, h - heights[i] + .5) #ctx.rectangle (i - .5, h - heights[i] + .5, i + 1, h) ctx.line_to (i, h) ctx.close_path () ctx.fill () def __handle_expose_event (self, self_, event): self.__redraw () return True def __handle_configure_event (self, self_, event): if event.width < 16: return if self.sentinel: self.sentinel_step, self.sentinel_data = self.sentinel.run_for (event.width) # FIXME: Is this done automatically? self.queue_draw () return False def __handle_size_request (self, self_, req): # FIXME: req.height = 64 class LineFrequencyFeature (FeatureBase): state_section_name = "line-frequency-display" def __init__ (self): self.action_group = gtk.ActionGroup ("LineFrequencyActions") self.action_group.add_toggle_actions ([("show-line-frequency", None, _("Line _Density"))]) def attach (self, window): self.log_model = window.log_model self.log_filter = window.log_filter self.log_view = window.log_view ui = window.ui_manager ui.insert_action_group (self.action_group, 0) self.merge_id = ui.new_merge_id () ui.add_ui (self.merge_id, "/menubar/ViewMenu/ViewMenuAdditions", "ViewLineFrequency", "show-line-frequency", gtk.UI_MANAGER_MENUITEM, False) box = window.get_top_attach_point () self.density_display = LineFrequencyWidget () self.density_display.add_events (gtk.gdk.ALL_EVENTS_MASK) # FIXME self.density_display.connect ("button-press-event", self.handle_density_button_press_event) self.density_display.connect ("motion-notify-event", self.handle_density_motion_notify_event) box.pack_start (self.density_display, False, False, 0) self.density_display.hide () window.widgets.log_view_scrolled_window.props.vadjustment.connect ("value-changed", self.handle_log_view_adjustment_value_changed) handler = self.handle_show_action_toggled self.action_group.get_action ("show-line-frequency").connect ("toggled", handler) window.sentinels.append (self.sentinel_process) def detach (self, window): window.sentinels.remove (self.sentinel_process) window.ui_manager.remove_ui (self.merge_id) self.merge_id = None # FIXME: Remove action group from ui manager! self.density_display.destroy () self.density_display = None def sentinel_process (self): if self.action_group.get_action ("show-line-frequency").props.active: sentinel = LineDensitySentinel (self.log_model) self.density_display.set_sentinel (sentinel) def handle_log_view_adjustment_value_changed (self, adj): # FIXME: If not visible, disconnect this handler! if not self.density_display.props.visible: return start_path, end_path = self.log_view.get_visible_range () ts1 = self.log_model.get (self.log_model.get_iter (start_path), self.log_model.COL_TIME)[0] ts2 = self.log_model.get (self.log_model.get_iter (end_path), self.log_model.COL_TIME)[0] self.density_display.update_position (ts1, ts2) def handle_show_action_toggled (self, action): show = action.props.active if show: self.density_display.show () if self.density_display.sentinel is None: sentinel = LineFrequencySentinel (self.log_model) self.density_display.set_sentinel (sentinel) else: self.density_display.hide () def handle_density_button_press_event (self, widget, event): if event.button != 1: return True pos = int (event.x) self.goto_density (pos) return False def handle_density_motion_notify_event (self, widget, event): if not event.state & gtk.gdk.BUTTON1_MASK: return True pos = int (event.x) self.goto_density (pos) return False def goto_density (self, pos): data = self.density_display.sentinel_data if not data: return True count = 0 for i in range (pos): count += data[i] row = self.log_model[count] self.log_view.scroll_to_cell ((count,), use_align = True, row_align = .5) return False class Plugin (PluginBase): features = [LineFrequencyFeature]