class MainPlotController(object):
"""
A controller for the main plot canvas.
Sets up the widgets and has image exporting functionality.
"""
file_filters = ("Portable Network Graphics (PNG)", "*.png"), \
("Scalable Vector Graphics (SVG)", "*.svg"), \
("Portable Document Format (PDF)", "*.pdf")
_canvas = None
@property
def canvas(self):
if not self._canvas:
self.setup_figure()
self.setup_canvas()
self.setup_content()
return self._canvas
# ------------------------------------------------------------
# View integration getters
# ------------------------------------------------------------
def get_toolbar_widget(self, window):
return NavigationToolbar(self.canvas, window)
def get_canvas_widget(self):
return self.canvas
# ------------------------------------------------------------
# Initialization and other internals
# ------------------------------------------------------------
def __init__(self, status_callback, marker_callback, *args, **kwargs):
self.setup_layout_cache()
self.setup_figure()
self.setup_canvas()
self.setup_content(status_callback, marker_callback)
def setup_layout_cache(self):
self.position_setup = PositionSetup()
self.labels = list()
self.marker_lbls = list()
self._proxies = dict()
self.scale = 1.0
self.stats = False
self._last_pos = None
def setup_figure(self):
self.figure = Figure(dpi=72, facecolor="#FFFFFF", linewidth=0)
self.figure.subplots_adjust(hspace=0.0, wspace=0.0)
def setup_canvas(self):
self._canvas = FigureCanvasGTK(self.figure)
def setup_content(self, status_callback, marker_callback):
# Create subplot and add it to the figure:
self.plot = Subplot(self.figure, 211, facecolor=(1.0, 1.0, 1.0, 0.0))
self.plot.set_autoscale_on(False)
self.figure.add_axes(self.plot)
# Connect events:
self.canvas.mpl_connect('draw_event', self.fix_after_drawing)
self.canvas.mpl_connect('resize_event', self.fix_after_drawing)
self.mtc = MotionTracker(self, status_callback)
self.cc = ClickCatcher(self, marker_callback)
#self.update()
# ------------------------------------------------------------
# Update methods
# ------------------------------------------------------------
def draw(self):
self._last_pos = self.fix_before_drawing()
self.figure.canvas.draw()
def fix_after_drawing(self, *args):
_new_pos = self.fix_before_drawing()
if _new_pos != self._last_pos:
self._last_pos = _new_pos
self._redraw_later()
return False
def _redraw_later(self):
self.timer = self.figure.canvas.new_timer(interval=10)
self.timer.single_shot = True
self.timer.add_callback(lambda: self.figure.canvas.draw_idle())
self.timer.start()
def fix_before_drawing(self, *args):
"""
Fixes alignment issues due to longer labels or smaller windows
Is executed after an initial draw event, since we can then retrieve
the actual label dimensions and shift/resize the plot accordingly.
"""
renderer = get_renderer(self.figure)
if not renderer or not self._canvas.get_realized():
return False
# Fix left side for wide specimen labels:
if len(self.labels) > 0:
bbox = self._get_joint_bbox(self.labels, renderer)
if bbox is not None:
self.position_setup.left = self.position_setup.default_left + bbox.width
# Fix top for high marker labels:
if len(self.marker_lbls) > 0:
bbox = self._get_joint_bbox(
[label for label, flag, _ in self.marker_lbls if flag],
renderer)
if bbox is not None:
self.position_setup.top = self.position_setup.default_top - bbox.height
# Fix bottom for x-axis label:
bottom_label = self.plot.axis["bottom"].label
if bottom_label is not None:
bbox = self._get_joint_bbox([bottom_label], renderer)
if bbox is not None:
self.position_setup.bottom = self.position_setup.default_bottom + (
bbox.ymax - bbox.ymin) * 2.0 # somehow we need this?
# Calculate new plot position & set it:
plot_pos = self.position_setup.position
self.plot.set_position(plot_pos)
# Adjust specimen label position
for label in self.labels:
label.set_x(plot_pos[0] - 0.025)
# Adjust marker label position
for label, flag, y_offset in self.marker_lbls:
if flag:
newy = plot_pos[1] + plot_pos[3] + y_offset - 0.025
label.set_y(newy)
_new_pos = self.position_setup.to_string()
return _new_pos
def update(self, clear=False, project=None, specimens=None):
"""
Updates the entire plot with the given information.
"""
if clear: self.plot.cla()
if project and specimens:
self.labels, self.marker_lbls = plot_specimens(
self.plot, self.position_setup, self.cc, project, specimens)
# get mixtures for the selected specimens:
plot_mixtures(self.plot, project, [
mixture for mixture in project.mixtures
if any(specimen in mixture.specimens for specimen in specimens)
])
update_axes(self.plot, self.position_setup, project, specimens)
self.draw()
# ------------------------------------------------------------
# Plot position and size calculations
# ------------------------------------------------------------
def _get_joint_bbox(self, container, renderer):
bboxes = []
try:
for text in container:
bbox = text.get_window_extent(renderer=renderer)
# the figure transform goes from relative coords->pixels and we
# want the inverse of that
bboxi = bbox.inverse_transformed(self.figure.transFigure)
bboxes.append(bboxi)
except (RuntimeError, ValueError):
logger.exception(
"Caught unhandled exception when joining boundig boxes")
return None # don't continue
# this is the bbox that bounds all the bboxes, again in relative
# figure coords
if len(bboxes) > 0:
bbox = transforms.Bbox.union(bboxes)
return bbox
else:
return None
# ------------------------------------------------------------
# Graph exporting
# ------------------------------------------------------------
def save(self,
parent=None,
current_name="graph",
size="auto",
num_specimens=1,
offset=0.75):
"""
Displays a save dialog to export an image from the current plot.
"""
# Parse arguments:
width, height = 0, 0
if size == "auto":
descr, width, height, dpi = settings.OUTPUT_PRESETS[0]
else:
width, height, dpi = list(
map(float,
size.replace("@", "x").split("x")))
# Load gui:
builder = Gtk.Builder()
builder.add_from_file(
resource_filename("pyxrd.specimen", "glade/save_graph_size.glade")
) # FIXME move this to this namespace!!
size_expander = builder.get_object("size_expander")
cmb_presets = builder.get_object("cmb_presets")
# Setup combo with presets:
cmb_store = Gtk.ListStore(str, int, int, float)
for row in settings.OUTPUT_PRESETS:
cmb_store.append(row)
cmb_presets.clear()
cmb_presets.set_model(cmb_store)
cell = Gtk.CellRendererText()
cmb_presets.pack_start(cell, True)
cmb_presets.add_attribute(cell, 'text', 0)
def on_cmb_changed(cmb, *args):
itr = cmb.get_active_iter()
w, h, d = cmb_store.get(itr, 1, 2, 3)
entry_w.set_text(str(w))
entry_h.set_text(str(h))
entry_dpi.set_text(str(d))
cmb_presets.connect('changed', on_cmb_changed)
# Setup input boxes:
entry_w = builder.get_object("entry_width")
entry_h = builder.get_object("entry_height")
entry_dpi = builder.get_object("entry_dpi")
entry_w.set_text(str(width))
entry_h.set_text(str(height))
entry_dpi.set_text(str(dpi))
# What to do when the user wants to save this:
def on_accept(dialog):
# Get the width, height & dpi
width = float(entry_w.get_text())
height = float(entry_h.get_text())
dpi = float(entry_dpi.get_text())
i_width, i_height = width / dpi, height / dpi
# Save it all right!
self.save_figure(dialog.filename, dpi, i_width, i_height)
# Ask the user where, how and if he wants to save:
DialogFactory.get_save_dialog(
"Save Graph",
parent=parent,
filters=self.file_filters,
current_name=current_name,
extra_widget=size_expander).run(on_accept)
def save_figure(self, filename, dpi, i_width, i_height):
"""
Save the current plot
Arguments:
filename: the filename to save to (either .png, .pdf or .svg)
dpi: Dots-Per-Inch resolution
i_width: the width in inch
i_height: the height in inch
"""
# Get original settings:
original_dpi = self.figure.get_dpi()
original_width, original_height = self.figure.get_size_inches()
# Set everything according to the user selection:
self.figure.set_dpi(dpi)
self.figure.set_size_inches((i_width, i_height))
self.figure.canvas.draw() # replot
bbox_inches = matplotlib.transforms.Bbox.from_bounds(
0, 0, i_width, i_height)
# Save the figure:
self.figure.savefig(filename, dpi=dpi, bbox_inches=bbox_inches)
# Put everything back the way it was:
self.figure.set_dpi(original_dpi)
self.figure.set_size_inches((original_width, original_height))
self.figure.canvas.draw() # replot
pass # end of class
class MainPlotController(object):
"""
A controller for the main plot canvas.
Sets up the widgets and has image exporting functionality.
"""
file_filters = ("Portable Network Graphics (PNG)", "*.png"), \
("Scalable Vector Graphics (SVG)", "*.svg"), \
("Portable Document Format (PDF)", "*.pdf")
_canvas = None
@property
def canvas(self):
if not self._canvas:
self.setup_figure()
self.setup_canvas()
self.setup_content()
return self._canvas
# ------------------------------------------------------------
# View integration getters
# ------------------------------------------------------------
def get_toolbar_widget(self, window):
return NavigationToolbar(self.canvas, window)
def get_canvas_widget(self):
return self.canvas
# ------------------------------------------------------------
# Initialization and other internals
# ------------------------------------------------------------
def __init__(self, status_callback, marker_callback, *args, **kwargs):
self.setup_layout_cache()
self.setup_figure()
self.setup_canvas()
self.setup_content(status_callback, marker_callback)
def setup_layout_cache(self):
self.position_setup = PositionSetup()
self.labels = list()
self.marker_lbls = list()
self._proxies = dict()
self.scale = 1.0
self.stats = False
self._last_pos = None
def setup_figure(self):
self.figure = Figure(dpi=72, facecolor="#FFFFFF", linewidth=0)
self.figure.subplots_adjust(hspace=0.0, wspace=0.0)
def setup_canvas(self):
self._canvas = FigureCanvasGTK(self.figure)
def setup_content(self, status_callback, marker_callback):
# Create subplot and add it to the figure:
self.plot = Subplot(self.figure, 211, facecolor=(1.0, 1.0, 1.0, 0.0))
self.plot.set_autoscale_on(False)
self.figure.add_axes(self.plot)
# Connect events:
self.canvas.mpl_connect('draw_event', self.fix_after_drawing)
self.canvas.mpl_connect('resize_event', self.fix_after_drawing)
self.mtc = MotionTracker(self, status_callback)
self.cc = ClickCatcher(self, marker_callback)
#self.update()
# ------------------------------------------------------------
# Update methods
# ------------------------------------------------------------
def draw(self):
self._last_pos = self.fix_before_drawing()
self.figure.canvas.draw()
def fix_after_drawing(self, *args):
_new_pos = self.fix_before_drawing()
if _new_pos != self._last_pos:
self.figure.canvas.draw()
self._last_pos = _new_pos
return False
def fix_before_drawing(self, *args):
"""
Fixes alignment issues due to longer labels or smaller windows
Is executed after an initial draw event, since we can then retrieve
the actual label dimensions and shift/resize the plot accordingly.
"""
renderer = get_renderer(self.figure)
if not renderer or not self._canvas.get_realized():
return False
# Fix left side for wide specimen labels:
if len(self.labels) > 0:
bbox = self._get_joint_bbox(self.labels, renderer)
if bbox is not None:
self.position_setup.left = self.position_setup.default_left + bbox.width
# Fix top for high marker labels:
if len(self.marker_lbls) > 0:
bbox = self._get_joint_bbox([ label for label, flag, _ in self.marker_lbls if flag ], renderer)
if bbox is not None:
self.position_setup.top = self.position_setup.default_top - bbox.height
# Fix bottom for x-axis label:
bottom_label = self.plot.axis["bottom"].label
if bottom_label is not None:
bbox = self._get_joint_bbox([bottom_label], renderer)
if bbox is not None:
self.position_setup.bottom = self.position_setup.default_bottom + (bbox.ymax - bbox.ymin) * 2.0 # somehow we need this?
# Calculate new plot position & set it:
plot_pos = self.position_setup.position
self.plot.set_position(plot_pos)
# Adjust specimen label position
for label in self.labels:
label.set_x(plot_pos[0] - 0.025)
# Adjust marker label position
for label, flag, y_offset in self.marker_lbls:
if flag:
newy = plot_pos[1] + plot_pos[3] + y_offset - 0.025
label.set_y(newy)
_new_pos = self.position_setup.to_string()
return _new_pos
def update(self, clear=False, project=None, specimens=None):
"""
Updates the entire plot with the given information.
"""
if clear: self.plot.cla()
if project and specimens:
self.labels, self.marker_lbls = plot_specimens(
self.plot, self.position_setup, self.cc,
project, specimens
)
# get mixtures for the selected specimens:
plot_mixtures(self.plot, project, [ mixture for mixture in project.mixtures if any(specimen in mixture.specimens for specimen in specimens) ])
update_axes(
self.plot, self.position_setup,
project, specimens
)
self.draw()
# ------------------------------------------------------------
# Plot position and size calculations
# ------------------------------------------------------------
def _get_joint_bbox(self, container, renderer):
bboxes = []
try:
for text in container:
bbox = text.get_window_extent(renderer=renderer)
# the figure transform goes from relative coords->pixels and we
# want the inverse of that
bboxi = bbox.inverse_transformed(self.figure.transFigure)
bboxes.append(bboxi)
except (RuntimeError, ValueError):
logger.exception("Caught unhandled exception when joining boundig boxes")
return None # don't continue
# this is the bbox that bounds all the bboxes, again in relative
# figure coords
if len(bboxes) > 0:
bbox = transforms.Bbox.union(bboxes)
return bbox
else:
return None
# ------------------------------------------------------------
# Graph exporting
# ------------------------------------------------------------
def save(self, parent=None, current_name="graph", size="auto", num_specimens=1, offset=0.75):
"""
Displays a save dialog to export an image from the current plot.
"""
# Parse arguments:
width, height = 0, 0
if size == "auto":
descr, width, height, dpi = settings.OUTPUT_PRESETS[0]
else:
width, height, dpi = list(map(float, size.replace("@", "x").split("x")))
# Load gui:
builder = Gtk.Builder()
builder.add_from_file(resource_filename("pyxrd.specimen", "glade/save_graph_size.glade")) # FIXME move this to this namespace!!
size_expander = builder.get_object("size_expander")
cmb_presets = builder.get_object("cmb_presets")
# Setup combo with presets:
cmb_store = Gtk.ListStore(str, int, int, float)
for row in settings.OUTPUT_PRESETS:
cmb_store.append(row)
cmb_presets.clear()
cmb_presets.set_model(cmb_store)
cell = Gtk.CellRendererText()
cmb_presets.pack_start(cell, True)
cmb_presets.add_attribute(cell, 'text', 0)
def on_cmb_changed(cmb, *args):
itr = cmb.get_active_iter()
w, h, d = cmb_store.get(itr, 1, 2, 3)
entry_w.set_text(str(w))
entry_h.set_text(str(h))
entry_dpi.set_text(str(d))
cmb_presets.connect('changed', on_cmb_changed)
# Setup input boxes:
entry_w = builder.get_object("entry_width")
entry_h = builder.get_object("entry_height")
entry_dpi = builder.get_object("entry_dpi")
entry_w.set_text(str(width))
entry_h.set_text(str(height))
entry_dpi.set_text(str(dpi))
# What to do when the user wants to save this:
def on_accept(dialog):
# Get the width, height & dpi
width = float(entry_w.get_text())
height = float(entry_h.get_text())
dpi = float(entry_dpi.get_text())
i_width, i_height = width / dpi, height / dpi
# Save it all right!
self.save_figure(dialog.filename, dpi, i_width, i_height)
# Ask the user where, how and if he wants to save:
DialogFactory.get_save_dialog(
"Save Graph", parent=parent,
filters=self.file_filters, current_name=current_name,
extra_widget=size_expander
).run(on_accept)
def save_figure(self, filename, dpi, i_width, i_height):
"""
Save the current plot
Arguments:
filename: the filename to save to (either .png, .pdf or .svg)
dpi: Dots-Per-Inch resolution
i_width: the width in inch
i_height: the height in inch
"""
# Get original settings:
original_dpi = self.figure.get_dpi()
original_width, original_height = self.figure.get_size_inches()
# Set everything according to the user selection:
self.figure.set_dpi(dpi)
self.figure.set_size_inches((i_width, i_height))
self.figure.canvas.draw() # replot
bbox_inches = matplotlib.transforms.Bbox.from_bounds(0, 0, i_width, i_height)
# Save the figure:
self.figure.savefig(filename, dpi=dpi, bbox_inches=bbox_inches)
# Put everything back the way it was:
self.figure.set_dpi(original_dpi)
self.figure.set_size_inches((original_width, original_height))
self.figure.canvas.draw() # replot
pass # end of class
class MainPlotController (PlotController):
"""
A controller for the main plot canvas.
"""
# ------------------------------------------------------------
# Initialization and other internals
# ------------------------------------------------------------
def __init__(self, app_controller, *args, **kwargs):
self.labels = list()
self.marker_lbls = list()
self.scale = 1.0
self.stats = False
self.position_setup = PositionSetup()
self.app_controller = app_controller
PlotController.__init__(self, *args, **kwargs)
def setup_content(self):
# Create subplot and add it to the figure:
self.plot = Subplot(self.figure, 211, axisbg=(1.0, 1.0, 1.0, 0.0))
self.plot.set_autoscale_on(False)
self.figure.add_axes(self.plot)
# Connect events:
self.canvas.mpl_connect('draw_event', self.fix_after_drawing)
self.canvas.mpl_connect('resize_event', self.fix_after_drawing)
self.update()
# ------------------------------------------------------------
# Update methods
# ------------------------------------------------------------
def update(self, clear=False, project=None, specimens=None):
"""
Updates the entire plot with the given information.
"""
if clear: self.plot.cla()
if project and specimens:
self.labels, self.marker_lbls = plot_specimens(
self.plot, self.position_setup,
project, specimens
)
# get mixtures for the selected specimens:
plot_mixtures(self.plot, project, [ mixture for mixture in project.mixtures if any(specimen in mixture.specimens for specimen in specimens) ])
update_axes(
self.plot, self.position_setup,
project, specimens
)
self.draw()
# ------------------------------------------------------------
# Plot position and size calculations
# ------------------------------------------------------------
def _get_joint_bbox(self, container):
renderer = self._find_renderer()
bboxes = []
try:
for text in container:
bbox = text.get_window_extent(renderer=renderer)
# the figure transform goes from relative coords->pixels and we
# want the inverse of that
bboxi = bbox.inverse_transformed(self.figure.transFigure)
bboxes.append(bboxi)
except RuntimeError:
logger.exception("Caught unhandled exception when joining boundig boxes")
return None # don't continue
# this is the bbox that bounds all the bboxes, again in relative
# figure coords
if len(bboxes) > 0:
bbox = transforms.Bbox.union(bboxes)
return bbox
else:
return None
def _find_renderer(self):
if hasattr(self.figure.canvas, "get_renderer"):
#Some backends, such as TkAgg, have the get_renderer method, which
#makes this easy.
renderer = self.figure.canvas.get_renderer()
else:
#Others don't, but since this is called in the 'fix_after_drawing',
# a renderer has been created, so we can get it like this:
renderer = self.figure._cachedRenderer
return renderer
def fix_after_drawing(self, *args):
"""
Fixes alignment issues due to longer labels or smaller windows
Is executed after an initial draw event, since we can then retrieve
the actual label dimensions and shift/resize the plot accordingly.
"""
# Fix left side for wide specimen labels:
if len(self.labels) > 0:
bbox = self._get_joint_bbox(self.labels)
self.position_setup.left = 0.05 + bbox.width
# Fix top for high marker labels:
if len(self.marker_lbls) > 0:
bbox = self._get_joint_bbox([ label for label, flag, _ in self.marker_lbls if flag ])
if bbox is not None: self.position_setup.top = 1.0 - (0.05 + bbox.height) #Figure top - marker margin
# Fix bottom for x-axis label:
bottom_label = self.plot.axis["bottom"].label
if bottom_label is not None:
bbox = self._get_joint_bbox([bottom_label])
if bbox is not None: self.position_setup.bottom = 0.10 - min(bbox.ymin, 0.0)
# Calculate new plot position & set it:
plot_pos = self.position_setup.position
self.plot.set_position(plot_pos)
# Adjust specimen label position
for label in self.labels:
label.set_x(plot_pos[0] - 0.025)
# Adjust marker label position
for label, flag, y_offset in self.marker_lbls:
if flag:
label.set_y(plot_pos[1] + plot_pos[3] + y_offset - 0.025)
self.figure.canvas.draw()
return False
pass # end of class
class MainPlotController(PlotController):
"""
A controller for the main plot canvas.
"""
# ------------------------------------------------------------
# Initialization and other internals
# ------------------------------------------------------------
def __init__(self, app_controller, *args, **kwargs):
self.labels = list()
self.marker_lbls = list()
self.scale = 1.0
self.stats = False
self.position_setup = PositionSetup()
self.app_controller = app_controller
PlotController.__init__(self, *args, **kwargs)
def setup_content(self):
# Create subplot and add it to the figure:
self.plot = Subplot(self.figure, 211, axisbg=(1.0, 1.0, 1.0, 0.0))
self.plot.set_autoscale_on(False)
self.figure.add_axes(self.plot)
# Connect events:
self.canvas.mpl_connect('draw_event', self.fix_after_drawing)
self.canvas.mpl_connect('resize_event', self.fix_after_drawing)
self.update()
# ------------------------------------------------------------
# Update methods
# ------------------------------------------------------------
def update(self, clear=False, project=None, specimens=None):
"""
Updates the entire plot with the given information.
"""
if clear: self.plot.cla()
if project and specimens:
self.labels, self.marker_lbls = plot_specimens(
self.plot, self.position_setup, project, specimens)
# get mixtures for the selected specimens:
plot_mixtures(self.plot, project, [
mixture for mixture in project.mixtures
if any(specimen in mixture.specimens for specimen in specimens)
])
update_axes(self.plot, self.position_setup, project, specimens)
self.draw()
# ------------------------------------------------------------
# Plot position and size calculations
# ------------------------------------------------------------
def _get_joint_bbox(self, container):
renderer = self._find_renderer()
bboxes = []
try:
for text in container:
bbox = text.get_window_extent(renderer=renderer)
# the figure transform goes from relative coords->pixels and we
# want the inverse of that
bboxi = bbox.inverse_transformed(self.figure.transFigure)
bboxes.append(bboxi)
except (RuntimeError, ValueError):
logger.exception(
"Caught unhandled exception when joining boundig boxes")
return None # don't continue
# this is the bbox that bounds all the bboxes, again in relative
# figure coords
if len(bboxes) > 0:
bbox = transforms.Bbox.union(bboxes)
return bbox
else:
return None
def _find_renderer(self):
if hasattr(self.figure.canvas, "get_renderer"):
#Some backends, such as TkAgg, have the get_renderer method, which
#makes this easy.
renderer = self.figure.canvas.get_renderer()
else:
#Others don't, but since this is called in the 'fix_after_drawing',
# a renderer has been created, so we can get it like this:
renderer = self.figure._cachedRenderer
return renderer
def fix_after_drawing(self, *args):
"""
Fixes alignment issues due to longer labels or smaller windows
Is executed after an initial draw event, since we can then retrieve
the actual label dimensions and shift/resize the plot accordingly.
"""
# Fix left side for wide specimen labels:
if len(self.labels) > 0:
bbox = self._get_joint_bbox(self.labels)
if bbox is not None: self.position_setup.left = 0.05 + bbox.width
# Fix top for high marker labels:
if len(self.marker_lbls) > 0:
bbox = self._get_joint_bbox(
[label for label, flag, _ in self.marker_lbls if flag])
if bbox is not None:
self.position_setup.top = 1.0 - (0.05 + bbox.height
) #Figure top - marker margin
# Fix bottom for x-axis label:
bottom_label = self.plot.axis["bottom"].label
if bottom_label is not None:
bbox = self._get_joint_bbox([bottom_label])
if bbox is not None:
self.position_setup.bottom = 0.10 - min(bbox.ymin, 0.0)
# Calculate new plot position & set it:
plot_pos = self.position_setup.position
self.plot.set_position(plot_pos)
# Adjust specimen label position
for label in self.labels:
label.set_x(plot_pos[0] - 0.025)
# Adjust marker label position
for label, flag, y_offset in self.marker_lbls:
if flag:
label.set_y(plot_pos[1] + plot_pos[3] + y_offset - 0.025)
self.figure.canvas.draw()
return False
pass # end of class
