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Updated ImageView and ViewBox documentation

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This commit is contained in:
Luke Campagnola 2014-04-29 17:17:05 -04:00
parent 7b862f4f87
commit 1729416914
2 changed files with 55 additions and 23 deletions
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23
pyqtgraph/graphicsItems/ViewBox/ViewBox.py
View File

@ -74,12 +74,11 @@ class ViewBox(GraphicsWidget):
Features:
- Scaling contents by mouse or auto-scale when contents change
- View linking--multiple views display the same data ranges
- Configurable by context menu
- Item coordinate mapping methods
* Scaling contents by mouse or auto-scale when contents change
* View linking--multiple views display the same data ranges
* Configurable by context menu
* Item coordinate mapping methods
Not really compatible with GraphicsView having the same functionality.
"""
sigYRangeChanged = QtCore.Signal(object, object)
@ -116,11 +115,15 @@ class ViewBox(GraphicsWidget):
*enableMouse* (bool) Whether mouse can be used to scale/pan the view
*invertY* (bool) See :func:`invertY <pyqtgraph.ViewBox.invertY>`
*invertX* (bool) See :func:`invertX <pyqtgraph.ViewBox.invertX>`
*enableMenu* (bool) Whether to display a context menu when
right-clicking on the ViewBox background.
*name* (str) Used to register this ViewBox so that it appears
in the "Link axis" dropdown inside other ViewBox
context menus. This allows the user to manually link
the axes of any other view to this one.
============== =============================================================
"""
GraphicsWidget.__init__(self, parent)
self.name = None
self.linksBlocked = False
@ -220,7 +223,11 @@ class ViewBox(GraphicsWidget):
def register(self, name):
"""
Add this ViewBox to the registered list of views.
*name* will appear in the drop-down lists for axis linking in all other views.
This allows users to manually link the axes of any other ViewBox to
this one. The specified *name* will appear in the drop-down lists for
axis linking in the context menus of all other views.
The same can be accomplished by initializing the ViewBox with the *name* attribute.
"""
ViewBox.AllViews[self] = None

55
pyqtgraph/imageview/ImageView.py
View File

@ -12,8 +12,10 @@ Widget used for displaying 2D or 3D data. Features:
- ROI plotting
- Image normalization through a variety of methods
"""
from ..Qt import QtCore, QtGui, USE_PYSIDE
import sys
import numpy as np
from ..Qt import QtCore, QtGui, USE_PYSIDE
if USE_PYSIDE:
from .ImageViewTemplate_pyside import *
else:
@ -24,25 +26,14 @@ from ..graphicsItems.ROI import *
from ..graphicsItems.LinearRegionItem import *
from ..graphicsItems.InfiniteLine import *
from ..graphicsItems.ViewBox import *
#from widgets import ROI
import sys
#from numpy import ndarray
from .. import ptime as ptime
import numpy as np
from .. import debug as debug
from ..SignalProxy import SignalProxy
try:
from bottleneck import nanmin, nanmax
except ImportError:
from numpy import nanmin, nanmax
#try:
#from .. import metaarray as metaarray
#HAVE_METAARRAY = True
#except:
#HAVE_METAARRAY = False
class PlotROI(ROI):
@ -72,6 +63,16 @@ class ImageView(QtGui.QWidget):
imv = pg.ImageView()
imv.show()
imv.setImage(data)
**Keyboard interaction**
* left/right arrows step forward/backward 1 frame when pressed,
seek at 20fps when held.
* up/down arrows seek at 100fps
* pgup/pgdn seek at 1000fps
* home/end seek immediately to the first/last frame
* space begins playing frames. If time values (in seconds) are given
for each frame, then playback is in realtime.
"""
sigTimeChanged = QtCore.Signal(object, object)
sigProcessingChanged = QtCore.Signal(object)
@ -79,8 +80,31 @@ class ImageView(QtGui.QWidget):
def __init__(self, parent=None, name="ImageView", view=None, imageItem=None, *args):
"""
By default, this class creates an :class:`ImageItem <pyqtgraph.ImageItem>` to display image data
and a :class:`ViewBox <pyqtgraph.ViewBox>` to contain the ImageItem. Custom items may be given instead
by specifying the *view* and/or *imageItem* arguments.
and a :class:`ViewBox <pyqtgraph.ViewBox>` to contain the ImageItem.
============= =========================================================
**Arguments**
parent (QWidget) Specifies the parent widget to which
this ImageView will belong. If None, then the ImageView
is created with no parent.
name (str) The name used to register both the internal ViewBox
and the PlotItem used to display ROI data. See the *name*
argument to :func:`ViewBox.__init__()
<pyqtgraph.ViewBox.__init__>`.
view (ViewBox or PlotItem) If specified, this will be used
as the display area that contains the displayed image.
Any :class:`ViewBox <pyqtgraph.ViewBox>`,
:class:`PlotItem <pyqtgraph.PlotItem>`, or other
compatible object is acceptable.
imageItem (ImageItem) If specified, this object will be used to
display the image. Must be an instance of ImageItem
or other compatible object.
============= =========================================================
Note: to display axis ticks inside the ImageView, instantiate it
with a PlotItem instance as its view::
pg.ImageView(view=pg.PlotItem())
"""
QtGui.QWidget.__init__(self, parent, *args)
self.levelMax = 4096
@ -165,6 +189,7 @@ class ImageView(QtGui.QWidget):
self.normRoi.sigRegionChangeFinished.connect(self.updateNorm)
self.ui.roiPlot.registerPlot(self.name + '_ROI')
self.view.register(self.name)
self.noRepeatKeys = [QtCore.Qt.Key_Right, QtCore.Qt.Key_Left, QtCore.Qt.Key_Up, QtCore.Qt.Key_Down, QtCore.Qt.Key_PageUp, QtCore.Qt.Key_PageDown]
@ -318,7 +343,7 @@ class ImageView(QtGui.QWidget):
self.ui.histogram.setLevels(min, max)
def autoRange(self):
"""Auto scale and pan the view around the image."""
"""Auto scale and pan the view around the image such that the image fills the view."""
image = self.getProcessedImage()
self.view.autoRange()