Source code for glue_qt.viewers.matplotlib.toolbar_mode
import os
from qtpy import QtGui, QtWidgets
from glue.utils import nonpartial
from glue_qt.utils import load_ui, cmap2pixmap
from glue.viewers.common.tool import Tool
from glue.config import viewer_tool
from glue.viewers.matplotlib.toolbar_mode import ToolbarModeBase
__all__ = ['ContrastMode', 'ColormapMode']
[docs]@viewer_tool
class ContrastMode(ToolbarModeBase):
"""
Uses right mouse button drags to set bias and contrast, DS9-style.
The horizontal position of the mouse sets the bias, the vertical position
sets the contrast.
The move_callback defaults to calling _set_norm on the viewer with the
instance of ConstrastMode as the sole argument.
"""
icon = 'glue_contrast'
tool_id = 'image:contrast'
action_text = 'Contrast'
tool_tip = 'Adjust the bias/contrast'
shortcut = 'B'
def __init__(self, viewer, **kwargs):
super(ContrastMode, self).__init__(viewer, **kwargs)
self.bias = 0.5
self.contrast = 1.0
self._last = None
self._result = None
self._percent_lo = 1.
self._percent_hi = 99.
self.stretch = 'linear'
self._vmin = None
self._vmax = None
[docs] def set_clip_percentile(self, lo, hi):
"""Percentiles at which to clip the data at black/white"""
if lo == self._percent_lo and hi == self._percent_hi:
return
self._percent_lo = lo
self._percent_hi = hi
self._vmin = None
self._vmax = None
[docs] def get_clip_percentile(self):
if self._vmin is None and self._vmax is None:
return self._percent_lo, self._percent_hi
return None, None
[docs] def get_vmin_vmax(self):
if self._percent_lo is None or self._percent_hi is None:
return self._vmin, self._vmax
return None, None
[docs] def set_vmin_vmax(self, vmin, vmax):
if vmin == self._vmin and vmax == self._vmax:
return
self._percent_hi = self._percent_lo = None
self._vmin = vmin
self._vmax = vmax
[docs] def choose_vmin_vmax(self):
dialog = load_ui('contrastlimits.ui', None,
directory=os.path.dirname(__file__))
v = QtGui.QDoubleValidator()
dialog.vmin.setValidator(v)
dialog.vmax.setValidator(v)
vmin, vmax = self.get_vmin_vmax()
if vmin is not None:
dialog.vmin.setText(str(vmin))
if vmax is not None:
dialog.vmax.setText(str(vmax))
def _apply():
try:
vmin = float(dialog.vmin.text())
vmax = float(dialog.vmax.text())
self.set_vmin_vmax(vmin, vmax)
if self._move_callback is not None:
self._move_callback(self)
except ValueError:
pass
bb = dialog.buttonBox
bb.button(bb.Apply).clicked.connect(_apply)
dialog.accepted.connect(_apply)
dialog.show()
dialog.raise_()
dialog.exec_()
[docs] def move(self, event):
""" MoveEvent. Update bias and contrast on Right Mouse button drag """
if event.button != 3: # RMB drag only
return
x, y = event.x, event.y
dx, dy = self._axes.figure.canvas.get_width_height()
x = 1.0 * x / dx
y = 1.0 * y / dy
self.bias = x
self.contrast = (1 - y) * 10
super(ContrastMode, self).move(event)
class ColormapAction(QtWidgets.QAction):
def __init__(self, label, cmap, parent):
super(ColormapAction, self).__init__(label, parent)
self.cmap = cmap
pm = cmap2pixmap(cmap)
self.setIcon(QtGui.QIcon(pm))
[docs]@viewer_tool
class ColormapMode(Tool):
"""
A tool to change the colormap used in a viewer.
This calls a ``set_cmap`` method on the viewer, which should take the name
of the colormap as the sole argument.
"""
icon = 'glue_rainbow'
tool_id = 'image:colormap'
action_text = 'Set color scale'
tool_tip = 'Set color scale'
