import os,sys from itertools import izip import pygtk import gobject import gtk import fluents import logger import matplotlib from matplotlib.backends.backend_gtkagg import FigureCanvasGTKAgg as FigureCanvas from matplotlib.backend_bases import NavigationToolbar2,cursors from matplotlib.backends.backend_gtk import FileChooserDialog,cursord from matplotlib.widgets import SubplotTool,RectangleSelector,Lasso from matplotlib.nxutils import points_inside_poly from matplotlib.axes import Subplot, AxesImage from matplotlib.figure import Figure from matplotlib import cm,cbook from pylab import Polygon from matplotlib.collections import LineCollection from matplotlib.mlab import prctile import networkx import scipy # global active mode. Used by toolbars to communicate correct mode active_mode = 'default' class ObjectTable: """A 2D table of elements. An ObjectTable is a resizable two-dimensional array of objects. When resized, it will keep all the elements that fit in the new shape, and forget about other elements. When new elements are needed to fill out the new shape, they will be created. """ def __init__(self, xsize=0, ysize=0, creator=None): """Creates a two-dimensional table of objects. @param xsize: Width of the object table. @param ysize: Height of the object table. @param creator: A function that will be used to instantiate new items. """ self._elements = [] self._creator = creator or (lambda : None) self.xsize = xsize self.ysize = ysize self.resize(xsize, ysize) def resize(self, xsize, ysize): """Resizes the table by removing and creating elements as required. Makes the ObjectTable the specified size by removing elements that will not fit in the new shape and appending elements to fill the table. New elements will be created with the creator function passed as an argument to __init__. @param xsize: The new width. @type xsize: int @param ysize: The new height. @type ysize: int """ # Delete or append new rows del self._elements[ysize:] new_rows = ysize - len(self._elements) self._elements.extend([list() for i in range(new_rows)]) # Delete or append new columns for row in self._elements: del row[xsize:] new_elems = xsize - len(row) row.extend([self._creator() for i in range(new_elems)]) self.xsize = xsize self.ysize = ysize def __getitem__(self, index): x, y = index return self._elements[y][x] def __setitem__(self, index, value): x, y = index self._elements[y][x] = value class ViewFrame (gtk.Frame): """ A ViewFrame is a gtk container widget that contains a View. The ViewFrame is either active or inactive, and belongs to a group of VeiwFrames of which only one can be active at any time. """ def __init__(self, view_frames): """Initializes a new ViewFrame. @param view_frames: A list of view frames to which the new view frame shouls belong. Only one ViewFrame in this list can be active at any time. """ gtk.Frame.__init__(self) self.focused = False self.view_frames = view_frames self.empty_view = EmptyView() self._button_event = None ## Set up a VBox with a label wrapped in an event box. label = gtk.Label() ebox = gtk.EventBox() ebox.add(label) vbox = gtk.VBox() vbox.pack_start(ebox, expand=False) vbox.pack_start(gtk.HSeparator(), expand=False) self._ebox_button_event = ebox.connect("button-press-event", self._on_button_press_event) ## Keep the references for later use. self._vbox = vbox self._ebox = ebox self._view_title = label self.add(vbox) view_frames.append(self) if len(view_frames) == 1: self.focus() else: self.focused = True self.unfocus() # Get dropped views self.drag_dest_set(gtk.DEST_DEFAULT_ALL, [("GTK_TREE_MODEL_ROW", gtk.TARGET_SAME_APP, 7)], gtk.gdk.ACTION_LINK) self.connect("drag-data-received", self.on_drag_data_received) # Set view self._view = self.empty_view self._view.connect("button-press-event", self._on_button_press_event) self._vbox.add(self._view) self._view_title.set_text(self._view.title) self.show_all() self._view.show() def focus(self): """Gets focus and ensures that no other ViewFrame in the same set is in focus. """ if self.focused: self.emit('focus-changed', self, True) return self for frame in self.view_frames: frame.unfocus() self.set_shadow_type(gtk.SHADOW_IN) self._ebox.set_state(gtk.STATE_ACTIVE) self.focused = True self.emit('focus-changed', self, True) return self def unfocus(self): """Removes focus from the ViewFrame. Does nothing if unfocused.""" if not self.focused: return self.set_shadow_type(gtk.SHADOW_OUT) self._ebox.set_state(gtk.STATE_NORMAL) self.focused = False self.emit('focus-changed', self, False) def set_view(self, view): """Set view to view or to empty view if parameter is None @param view: An instance of View """ # if None is passed, use empty view if view == None: view = self.empty_view # do nothing if the view is already there if view == self._view: return # detach view from current parent if view._view_frame: view._view_frame.set_view(None) # switch which widget we are listening to if self._button_event: self._view.disconnect(self._button_event) self._button_event = view.connect("button-press-event", self._on_button_press_event) # remove old view, set new view if self._view: self._view.hide() self._vbox.remove(self._view) self._view._view_frame = None self._view_title.set_text(view.title) self._vbox.add(view) view.show() view._view_frame = self self._view = view def get_view(self): """Returns current view, or None if the empty view is set. @returns: None if the ViewFrame is currently displaying it's EmptyView. Otherwise it returns the currently displeyd View. """ if self._view == self.empty_view: return None return self._view def _on_button_press_event(self, widget, event): if not self.focused: self.focus() def on_drag_data_received(self, widget, drag_context, x, y, selection, info, timestamp): treestore, path = selection.tree_get_row_drag_data() iter = treestore.get_iter(path) obj = treestore.get_value(iter, 2) if isinstance(obj, Plot): self.set_view(obj) self.focus() elif isinstance(obj, fluents.dataset.Dataset): view = self.get_view() if view.is_mappable_with(obj): view._update_color_from_dataset(obj) # add selections below class MainView (gtk.Notebook): """The MainView class displays the Views in Fluents. MainView, of which there is normally only one instance, contains a gtk.Table that holds all the visible Views, and a single ViewFrame that is used for maximizing plots. """ def __init__(self): gtk.Notebook.__init__(self) self.set_show_tabs(False) self.set_show_border(False) self._view_frames = [] self._views = ObjectTable(2, 2, lambda : ViewFrame(self._view_frames)) self._large_view = ViewFrame(list()) self.update_small_views() for vf in self._view_frames: vf.connect('focus-changed', self._on_view_focus_changed) self.append_page(self._small_views) self.append_page(self._large_view) self.show() self.set_current_page(0) def __getitem__(self, x, y): return self._views[x, y] def update_small_views(self): """Creates a new gtk.Table to show the views. Called after changes to the _views property""" self._small_views = gtk.Table(self._views.ysize, self._views.xsize, True) self._small_views.set_col_spacings(4) self._small_views.set_row_spacings(4) for x in range(self._views.xsize): for y in range(self._views.ysize): child = self._views[x,y] self._small_views.attach(child, x, x+1, y, y+1) self._small_views.show_all() def get_active_small_view(self): """Returns the active ViewFrame in the small views table. If a view is maximized, the corresponding ViewFrame in the table will be returned, not the active maximized ViewFrame""" for vf in self._view_frames: if vf.focused: return vf return None def get_active_view_frame(self): """Returns the active view frame.""" if self.get_current_page() == 0: return self.get_active_small_view() else: return self._large_view def goto_large(self): """Maximize the view in the current ViewFrame. Maximizes the View in the current ViewFrame. The ViewFrame itself is not resized or modified, except it's view will be set to None. This method will do nothing if a view is currently maximized. """ if self.get_current_page() == 1: return vf = self.get_active_small_view() view = vf.get_view() vf.set_view(None) self._large_view.set_view(view) self.set_current_page(1) def goto_small(self): """Goes to the small views page. The maximized View will be given to the active ViewFrame in the view table. """ if self.get_current_page() == 0: return vf = self.get_active_small_view() view = self._large_view.get_view() self._large_view.set_view(None) vf.set_view(view) self.set_current_page(0) def insert_view(self, view): """Set a view in the currently active ViewFrame. @param view: An instance of View. """ if self.get_current_page() == 0: vf = self.get_active_small_view() else: vf = self._large_view vf.set_view(view) def set_all_plots(self, views): """Displays all the views in the list, and hides all other views. Loops through all ViewFrames from top left to bottom right, and sets their currently active View to the next view in the list. After the last view is placed in a ViewFrame, the remaining ViewFrames are emptied. @param views: A list of views to set. """ for y in range(self._views.ysize): for x in range(self._views.xsize): if views: self._views[x, y].set_view(views.pop()) else: self._views[x, y].set_view(None) def _on_view_focus_changed(self, widget, vf, focused): if focused: self.emit('view-changed', vf) def resize_table(self, width, height): """Resizes the list of small views. """ ## Hide all plots that will be removed from the screen. for x in range(self._views.xsize): for y in range(self._views.ysize): if x >= width or y >= height: self._views[x, y].set_view(None) self._view_frames.remove(self._views[x, y]) for x in range(self._views.xsize): for y in range(self._views.ysize): self._small_views.remove(self._views[x, y]) self._views.resize(width, height) self.update_small_views() self.insert_page(self._small_views, gtk.Label("small"), 0) self.remove_page(1) #self.set_current_page(0) self.goto_small() class View (gtk.Frame): """The base class of everything that is shown in the center view of fluents. Most views should rather subclass Plot, which automatically handles freezing, creates a toolbar, and sets up matplotlib Figure and Canvas objects. """ def __init__(self, title): gtk.Frame.__init__(self) self.title = title self.set_shadow_type(gtk.SHADOW_NONE) self._view_frame = None def get_toolbar(self): return None def is_mappable_with(self, dataset): """Override in individual plots.""" return False class EmptyView (View): """EmptyView is shown in ViewFrames that are unused.""" def __init__(self): View.__init__(self, 'Empty view') self.set_label(None) label = gtk.Label('No view') ebox = gtk.EventBox() ebox.add(label) self.add(ebox) label.show() ebox.show() self.show() class Plot (View): def __init__(self, title): View.__init__(self, title) self.selection_listener = None self.fig = Figure() self.canvas = FigureCanvas(self.fig) self._background = None self._frozen = False self._toolbar = PlotToolbar(self) self.canvas.add_events(gtk.gdk.ENTER_NOTIFY_MASK) self.current_dim = None self._current_selection = None def set_frozen(self, frozen): """A frozen plot will not be updated when the current selection is changed.""" self._frozen = frozen if not frozen and self._current_selection != None: self.set_current_selection(self._current_selection) def get_title(self): return self.title def get_toolbar(self): return self._toolbar def selection_changed(self, dim_name, selection): """ Selection observer handle. A selection change in a plot is only drawn if: 1.) plot is sensitive to selections (not freezed) 2.) plot is visible (has a view) 3.) the selections dim_name is the plot's dimension. """ self._current_selection = selection if self._frozen \ or not self.get_property('visible') \ or self.current_dim != dim_name: return self.set_current_selection(selection) def set_selection_listener(self, listener): """Allow project to listen to selections. The selection will propagate back to all plots through the selection_changed() method. The listener will be called as listener(dimension_name, ids). """ self.selection_listener = listener def update_selection(self, ids, key=None): """Returns updated current selection from ids. If a key is pressed we use the appropriate mode. key map: shift : union control : intersection """ if key == 'shift': ids = set(ids).union(self._current_selection[self.current_dim]) elif key == 'control': ids = set(ids).intersection(self._current_selection[self.current_dim]) else: pass return ids class LineViewPlot(Plot): """Line view plot with percentiles. A line view of vectors across a specified dimension of input dataset. No selection interaction is defined. Only support for 2d-arrays. input: -- major_axis : dim_number for line dim (see scipy.ndarray for axis def.) -- minor_axis : needs definition only for higher order arrays fixme: slow (cant get linecollection and blit to work) """ def __init__(self, dataset, major_axis=1, minor_axis=None, name="Line view"): self.dataset = dataset self._data = dataset.asarray() if len(self._data.shape)==2 and not minor_axis: minor_axis = major_axis-1 self.major_axis = major_axis self.minor_axis = minor_axis Plot.__init__(self, name) self.use_blit = False #fixme: blitting does work self.current_dim = self.dataset.get_dim_name(major_axis) # make axes self.ax = self.fig.add_subplot(111) #initial draw x_axis = scipy.arange(self._data.shape[minor_axis]) self.line_segs=[] for xi in range(self._data.shape[major_axis]): yi = self._data.take([xi], major_axis).ravel() self.line_segs.append([(xx,yy) for xx,yy in izip(x_axis, yi)]) # draw background self._set_background(self.ax) # add canvas self.add(self.canvas) self.canvas.show() # add toolbar #FIXME: Lineview plot cannot do selections -> disable in toolbar #self._toolbar = PlotToolbar(self) self.canvas.mpl_connect('resize_event', self.clear_background) def _set_background(self,ax): """Add three patches representing [min max],[5,95] and [25,75] percentiles, and a line at the median. """ # settings patch_color = 'b' #blue patch_lw = 0 #no edges patch_alpha = .15 # transparancy median_color = 'b' #blue median_width = 1.5 #linewidth percentiles = [0, 5, 25, 50, 75, 100] # ordinate xax = scipy.arange(self._data.shape[self.minor_axis]) #vertices verts_0 = [] #100,0 verts_1 = [] # 90,10 verts_2 = [] # 75,25 med = [] # add top vertices the low vertices (do i need an order?)#background for i in xax: prct = prctile(self._data.take([i], self.minor_axis), percentiles) verts_0.append((i, prct[0])) verts_1.append((i, prct[1])) verts_2.append((i, prct[2])) med.append(prct[3]) for i in xax[::-1]: prct = prctile(self._data.take([i], self.minor_axis), percentiles) verts_0.append((i, prct[-1])) verts_1.append((i, prct[-2])) verts_2.append((i, prct[-3])) # make polygons from vertices bck0 = Polygon(verts_0, alpha=patch_alpha, lw=patch_lw, facecolor=patch_color) bck1 = Polygon(verts_1, alpha=patch_alpha, lw=patch_lw, facecolor=patch_color) bck2 = Polygon(verts_2, alpha=patch_alpha, lw=patch_lw, facecolor=patch_color) # add polygons to axes ax.add_patch(bck0) ax.add_patch(bck1) ax.add_patch(bck2) # median line ax.plot(xax, med, median_color, linewidth=median_width) def clear_background(self, event): """Callback on resize event. Clears the background. """ self._background = None def set_current_selection(self, selection): """Draws the current selection. """ ids = selection[self.current_dim] # current identifiers index = self.dataset.get_indices(self.current_dim, ids) if len(index)==0: # do we have a selection return if self.use_blit: if self._background is None: self._bbox = self.ax.bbox.deepcopy() self._background = self.canvas.copy_from_bbox(self.ax.bbox) self.canvas.restore_region(self._background) if len(self.ax.collections)>0: # remove old linecollection self.ax.collections = [] segs = [self.line_segs[i] for i in index] line_coll = LineCollection(segs, colors=(1,0,0,1)) line_coll.set_clip_box(self.ax.bbox) self.ax.update_datalim(line_coll.get_verts(self.ax.transData)) #draw if self.use_blit: self.ax.draw_artist(line_coll) self.canvas.blit() else: self.ax.add_collection(line_coll) self.canvas.draw() class ScatterMarkerPlot(Plot): """The ScatterMarkerPlot is faster than regular scatterplot, but has no color and size options.""" def __init__(self, dataset_1, dataset_2, id_dim, sel_dim, id_1, id_2, s=6, name="Scatter plot"): Plot.__init__(self, name) self.use_blit = False self._background = None self.ax = self.fig.add_subplot(111) self.ax.axhline(0, color='k', lw=1., zorder=1) self.ax.axvline(0, color='k', lw=1., zorder=1) self.current_dim = id_dim self.dataset_1 = dataset_1 self.ms = s self._selection_line = None x_index = dataset_1[sel_dim][id_1] y_index = dataset_2[sel_dim][id_2] self.xaxis_data = dataset_1._array[:, x_index] self.yaxis_data = dataset_2._array[:, y_index] self.ax.plot(self.xaxis_data, self.yaxis_data, 'o', markeredgewidth=0, markersize=s) #self.ax.set_title(self.get_title()) self.add(self.canvas) self.canvas.show() def rectangle_select_callback(self, x1, y1, x2, y2, key): ydata = self.yaxis_data xdata = self.xaxis_data # find indices of selected area if x1>x2: x1, x2 = x2, x1 if y1>y2: y1, y2 = y2, y1 assert x1<=x2 assert y1<=y2 index = scipy.nonzero((xdata>x1) & (xdatay1) & (ydata0: return xdata_new = self.xaxis_data.take(index) #take data ydata_new = self.yaxis_data.take(index) #remove old selection if self._selection_line: self.ax.lines.remove(self._selection_line) self._selection_line, = self.ax.plot(xdata_new, ydata_new,marker='o', markersize=self.ms, linestyle=None, markerfacecolor='r') # self._toolbar.forward() #update data lims before draw if self.use_blit: self.ax.draw_artist(self._selection_line) self.canvas.blit() else: self.canvas.draw() class ScatterPlot(Plot): """The ScatterPlot is slower than scattermarker, but has size option.""" def __init__(self, dataset_1, dataset_2, id_dim, sel_dim, id_1, id_2,c='b',s=30,sel_dim_2=None, name="Scatter plot"): Plot.__init__(self, name) self.use_blit = False self.ax = self.fig.add_subplot(111) self.current_dim = id_dim self.dataset_1 = dataset_1 x_index = dataset_1[sel_dim][id_1] if sel_dim_2: y_index = dataset_2[sel_dim_2][id_2] else: y_index = dataset_2[sel_dim][id_2] self.xaxis_data = dataset_1._array[:, x_index] self.yaxis_data = dataset_2._array[:, y_index] lw = scipy.zeros(self.xaxis_data.shape) self.sc = sc = self.ax.scatter(self.xaxis_data, self.yaxis_data, s=s, c=c, linewidth=lw, edgecolor='k', alpha=.8, cmap=cm.jet) if len(c)>1: self.fig.colorbar(sc, fraction=.05) self.ax.axhline(0, color='k', lw=1., zorder=1) self.ax.axvline(0, color='k', lw=1., zorder=1) # collection self.coll = self.ax.collections[0] # add canvas to widget self.add(self.canvas) self.canvas.show() def is_mappable_with(self, dataset): """Returns True if dataset is mappable with this plot. """ if self.current_dim in dataset.get_dim_name() and dataset.asarray().shape[0] == self.xaxis_data.shape[0]: return True def _update_color_from_dataset(self, data): """Updates the facecolors from a dataset. """ array = data.asarray() #only support for 2d-arrays: try: m, n = array.shape except: raise ValueError, "No support for more tha 2 dimensions." # is dataset a vector or matrix? if not n==1: # we have a category dataset if isinstance(data, fluents.dataset.CategoryDataset): map_vec = scipy.dot(array, scipy.diag(scipy.arange(n))).sum(1) else: map_vec = array.sum(1) else: map_vec = array.ravel() # normalise mapping vector map_vec = map_vec - map_vec.min() map_vec = map_vec/map_vec.max() # update facecolors self.sc._facecolors = self.sc.to_rgba(map_vec, self.sc._alpha) # draw self.sc._A = None # mean hack self.ax.draw_artist(self.sc) self.canvas.draw() def rectangle_select_callback(self, x1, y1, x2, y2, key): ydata = self.yaxis_data xdata = self.xaxis_data # find indices of selected area if x1>x2: x1, x2 = x2, x1 if y1>y2: y1, y2 = y2, y1 assert x1<=x2 assert y1<=y2 index = scipy.nonzero((xdata>x1) & (xdatay1) & (ydata0: lw.put(2., index) self.coll.set_linewidth(lw) if self.use_blit: self.canvas.blit() self.ax.draw_artist(self.coll) else: self.canvas.draw() class ImagePlot(Plot): def __init__(self, dataset, **kw): self.dataset = dataset self.keywords = kw Plot.__init__(self, kw['name']) self.ax = self.fig.add_subplot(111) self.ax.set_xticks([]) self.ax.set_yticks([]) self.ax.grid(False) # FIXME: ax shouldn't be in kw at all if kw.has_key('ax'): kw.pop('ax') # Initial draw # xim = AxesImage(dataset.asarray(), self.ax) self.ax.imshow(dataset.asarray(), interpolation='nearest', aspect='auto') # Add canvas and show self.add(self.canvas) self.canvas.show() def get_toolbar(self): return self._toolbar class NetworkPlot(Plot): def __init__(self, dataset, **kw): # Set member variables and call superclass' constructor self.graph = dataset.asnetworkx() self.dataset = dataset self.keywords = kw self.dim_name = self.dataset.get_dim_name(0) if not kw.has_key('with_labels'): kw['with_labels'] = False if not kw.has_key('name'): kw['name'] = self.dataset.get_name() if not kw.has_key('prog'): kw['prog'] = 'neato' if not kw.has_key('pos') or kw['pos']: kw['pos'] = networkx.graphviz_layout(self.graph, kw['prog']) if not kw.has_key('nodelist'): kw['nodelist'] = self.dataset.get_identifiers(self.dim_name, sorted=True) Plot.__init__(self, kw['name']) self.current_dim = self.dim_name # Keep node size and color as dicts for fast lookup self.node_size = {} if kw.has_key('node_size') and cbook.iterable(kw['node_size']): kw.remove('node_size') for id, size in zip(self.dataset[self.dim_name], kw['node_size']): self.node_size[id] = size else: for id in dataset[self.dim_name]: self.node_size[id] = 30 self.node_color = {} if kw.has_key('node_color') and cbook.iterable(kw['node_color']): kw.remove('node_color') for id, color in zip(self.dataset[self.dim_name], kw['node_color']): self.node_color[id] = color else: self.node_color = None # for id in self.dataset[self.dim_name]: # self.node_color[id] = 'red' if kw.has_key('node_color'): kw.pop('node_color') self.ax = self.fig.add_subplot(111) self.ax.set_xticks([]) self.ax.set_yticks([]) self.ax.grid(False) # FIXME: ax shouldn't be in kw at all if kw.has_key('ax'): kw.pop('ax') # Add canvas and show self.add(self.canvas) self.canvas.show() # Initial draw networkx.draw_networkx(self.graph, ax=self.ax, **kw) del kw['nodelist'] def get_toolbar(self): return self._toolbar def rectangle_select_callback(self, x1, y1, x2, y2, key): pos = self.keywords['pos'] ydata = scipy.zeros((len(pos),), 'l') xdata = scipy.zeros((len(pos),), 'l') node_ids = [] c = 0 for name,(x,y) in pos.items(): node_ids.append(name) xdata[c] = x ydata[c] = y c+=1 # find indices of selected area if x1 > x2: x1, x2 = x2, x1 if y1 > y2: y1, y2 = y2, y1 index = scipy.nonzero((xdata>x1) & (xdatay1) & (ydataabs(dy)): dy = dx else: dx = dy elif event.key=='x': dy = 0 elif event.key=='y': dx = 0 elif event.key=='shift': if 2*abs(dx) < abs(dy): dx=0 elif 2*abs(dy) < abs(dx): dy=0 elif(abs(dx)>abs(dy)): dy=dy/abs(dy)*abs(dx) else: dx=dx/abs(dx)*abs(dy) return (dx,dy) for cur_xypress in self._xypress: lastx, lasty, a, ind, lim, trans = cur_xypress xmin, xmax, ymin, ymax = lim #safer to use the recorded button at the press than current button: #multiple button can get pressed during motion... if self._button_pressed==1: lastx, lasty = trans.inverse_xy_tup( (lastx, lasty) ) x, y = trans.inverse_xy_tup( (event.x, event.y) ) if a.get_xscale()=='log': dx=1-lastx/x else: dx=x-lastx if a.get_yscale()=='log': dy=1-lasty/y else: dy=y-lasty dx,dy=format_deltas(event,dx,dy) if a.get_xscale()=='log': xmin *= 1-dx xmax *= 1-dx else: xmin -= dx xmax -= dx if a.get_yscale()=='log': ymin *= 1-dy ymax *= 1-dy else: ymin -= dy ymax -= dy elif self._button_pressed==3: try: dx=(lastx-event.x)/float(a.bbox.width()) dy=(lasty-event.y)/float(a.bbox.height()) dx,dy=format_deltas(event,dx,dy) if a.get_aspect() != 'auto': dx = 0.5*(dx + dy) dy = dx alphax = pow(10.0,dx) alphay = pow(10.0,dy) lastx, lasty = trans.inverse_xy_tup( (lastx, lasty) ) if a.get_xscale()=='log': xmin = lastx*(xmin/lastx)**alphax xmax = lastx*(xmax/lastx)**alphax else: xmin = lastx+alphax*(xmin-lastx) xmax = lastx+alphax*(xmax-lastx) if a.get_yscale()=='log': ymin = lasty*(ymin/lasty)**alphay ymax = lasty*(ymax/lasty)**alphay else: ymin = lasty+alphay*(ymin-lasty) ymax = lasty+alphay*(ymax-lasty) except OverflowError: warnings.warn('Overflow while panning') return a.set_xlim(xmin, xmax) a.set_ylim(ymin, ymax) self.canvas.draw() def _on_button_release(self, event): 'the release mouse button callback in pan/zoom mode' self.canvas.mpl_disconnect(self._motion_notify) if not self._xypress: return self._xypress = None self._button_pressed = None self.canvas.draw() class ZoomPlotMode (PlotMode): def __init__(self, plot): PlotMode.__init__(self, plot, 'zoom', 'Zoom to rectangle','zoom_to_rect') self._selectors = {} def activate(self): for ax in self.canvas.figure.get_axes(): props = dict(facecolor = 'blue', edgecolor = 'black', alpha = 0.3, fill = True) rs = RectangleSelector(ax, self._on_select, drawtype='box', useblit=True, rectprops = props) self.canvas.draw() self._selectors[rs] = ax def deactivate(self): self._mpl_disconnect_all() self._selectors = {} def _on_select(self, start, end): ax = start.inaxes ax.set_xlim((min(start.xdata, end.xdata), max(start.xdata, end.xdata))) ax.set_ylim((min(start.ydata, end.ydata), max(start.ydata, end.ydata))) self.canvas.draw() class SelectPlotMode2 (PlotMode): def __init__(self, plot): PlotMode.__init__(self, plot, 'lassoselect', 'Select within lasso', 'lasso') def activate(self): self._button_press = self.canvas.mpl_connect( 'button_press_event', self._on_select) def deactivate(self): self._mpl_disconnect_all() self.plot._lasso = None def _on_select(self, event): if self.canvas.widgetlock.locked(): return if event.inaxes is None: return self.plot._lasso = Lasso(event.inaxes, (event.xdata, event.ydata), self.lasso_callback) self.plot._lasso.line.set_linewidth(1) self.plot._lasso.line.set_linestyle('--') # get a lock on the widget self.canvas.widgetlock(self.plot._lasso) self._event = event def lasso_callback(self, verts): self.plot.lasso_select_callback(verts, self._event.key) class SelectPlotMode (PlotMode): def __init__(self, plot): PlotMode.__init__(self, plot, 'select', 'Select within rectangle', 'select') self._selectors = {} def activate(self): for ax in self.canvas.figure.get_axes(): props = dict(facecolor = 'blue', edgecolor = 'black', alpha = 0.3, fill = True) rs = RectangleSelector(ax, self._on_select, drawtype='box', useblit=True, rectprops = props) self.canvas.draw() self._selectors[rs] = ax def deactivate(self): self._mpl_disconnect_all() self._selectors = {} def _on_select(self, start, end): self.plot.rectangle_select_callback(start.xdata, start.ydata, end.xdata, end.ydata, end.key) class PlotToolbar(gtk.Toolbar): def __init__(self, plot): gtk.Toolbar.__init__(self) self.plot = plot self.canvas = plot.canvas self._current_mode = None self.tooltips = gtk.Tooltips() ## Maps toolbar buttons to PlotMode objects. self._mode_buttons = {} self.set_property('show-arrow', False) self.canvas.connect('enter-notify-event', self.on_enter_notify) self.show() self.add_mode(DefaultPlotMode(self.plot)) self.add_mode(PanPlotMode(self.plot)) self.add_mode(ZoomPlotMode(self.plot)) self.add_mode(SelectPlotMode(self.plot)) self.add_mode(SelectPlotMode2(self.plot)) self.insert(gtk.SeparatorToolItem(), -1) self.set_style(gtk.TOOLBAR_ICONS) # Set up freeze button btn = gtk.ToggleToolButton() image = gtk.Image() image.set_from_pixbuf(fluents.icon_factory.get('freeze')) btn.set_icon_widget(image) btn.connect('toggled', self._on_freeze_toggle) self.insert(btn, -1) self.show_all() def add_mode(self, mode): """Adds a new mode to the toolbar.""" if len(self._mode_buttons) > 0: other = self._mode_buttons.keys()[0] else: other = None btn = gtk.RadioToolButton(other) btn.set_icon_widget(mode.get_icon()) btn.set_tooltip(self.tooltips, mode.tooltip, 'Private') btn.connect('toggled', self._on_mode_toggle) self._mode_buttons[btn] = mode self.insert(btn, -1) if self._current_mode == None: self._current_mode = mode def get_mode(self): """Returns the active mode name.""" if self._current_mode: return self._current_mode.name return None def get_mode_by_name(self, mode_name): """Returns the mode with the given name or None.""" for m in self._mode_buttons.values(): if m.name == mode_name: return m return None def get_button(self, mode_name): """Returns the button that corresponds to a mode name.""" for b, m in self._mode_buttons.items(): if m.name == mode_name: return b return None def set_mode(self, mode_name): """Sets a mode by name. Returns the mode or None""" if mode_name == self._current_mode.name: return None if self._current_mode: self._current_mode.deactivate() new_mode = self.get_mode_by_name(mode_name) if new_mode: new_mode.activate() self._current_mode = self.get_mode_by_name(mode_name) else: logger.log('warning', 'No such mode: %s' % mode_name) if self.get_button(mode_name) and \ not self.get_button(mode_name).get_active(): self.get_button(mode_name).set_active(True) globals()['active_mode'] = mode_name return self._current_mode def _on_mode_toggle(self, button): if button.get_active(): self.set_mode(self._mode_buttons[button].name) def _on_freeze_toggle(self, button): self.plot.set_frozen(button.get_active()) def on_enter_notify(self, widget, event): self.set_mode(active_mode) # need views (plots) to grab key-events widget.grab_focus() # Create a view-changed signal that should be emitted every time # the active view changes. gobject.signal_new('view-changed', MainView, gobject.SIGNAL_RUN_LAST, gobject.TYPE_NONE, (gobject.TYPE_PYOBJECT,)) # Create focus-changed signal gobject.signal_new('focus-changed', ViewFrame, gobject.SIGNAL_RUN_LAST, gobject.TYPE_NONE, (gobject.TYPE_PYOBJECT, gobject.TYPE_BOOLEAN,))