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minor fixes

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This commit is contained in:
Luke Campagnola 2018-06-15 14:18:38 -07:00
parent e78693631b
commit 060d2479f9
2 changed files with 18 additions and 14 deletions
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2
examples/ROIExamples.py
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@ -138,7 +138,7 @@ label4 = w4.addLabel(text, row=0, col=0)
v4 = w4.addViewBox(row=1, col=0, lockAspect=True)
g = pg.GridItem()
v4.addItem(g)
r4 = pg.ROI([0,0], [100,100], removable=True)
r4 = pg.ROI([0,0], [100,100], resizable=False, removable=True)
r4.addRotateHandle([1,0], [0.5, 0.5])
r4.addRotateHandle([0,1], [0.5, 0.5])
img4 = pg.ImageItem(arr)

30
pyqtgraph/graphicsItems/ROI.py
View File

@ -42,9 +42,7 @@ class ROI(GraphicsObject):
rotate/translate/scale handles.
ROIs can be customized to have a variety of shapes (by subclassing or using
any of the built-in subclasses) and any combination of draggable handles
that allow the user to manipulate the ROI.
that allow the user to manipulate the ROI.
================ ===========================================================
**Arguments**
@ -78,8 +76,6 @@ class ROI(GraphicsObject):
inside the ROI. Default is True.
rotatable (bool) If True, the ROI can be rotated by mouse drag + ALT
resizable (bool) If True, the ROI can be resized by mouse drag + SHIFT
lockAspect (bool) If True, the aspect ratio of the ROI is locked during
mouse interaction.
removable (bool) If True, the ROI will be given a context menu with
an option to remove the ROI. The ROI emits
sigRemoveRequested when this menu action is selected.
@ -120,7 +116,7 @@ class ROI(GraphicsObject):
def __init__(self, pos, size=Point(1, 1), angle=0.0, invertible=False, maxBounds=None,
snapSize=1.0, scaleSnap=False, translateSnap=False, rotateSnap=False,
parent=None, pen=None, movable=True, rotatable=True, resizable=True,
lockAspect=False, removable=False):
removable=False):
GraphicsObject.__init__(self, parent)
self.setAcceptedMouseButtons(QtCore.Qt.NoButton)
pos = Point(pos)
@ -129,7 +125,6 @@ class ROI(GraphicsObject):
self.translatable = movable
self.rotatable = rotatable
self.resizable = resizable
self.lockAspect = lockAspect
self.removable = removable
self.menu = None
@ -281,9 +276,15 @@ class ROI(GraphicsObject):
if update not in (True, False):
raise TypeError("update argument must be bool")
size = Point(size)
if snap:
size[0] = round(size[0] / self.scaleSnapSize) * self.scaleSnapSize
size[1] = round(size[1] / self.scaleSnapSize) * self.scaleSnapSize
if centerLocal is not None:
center = Point(centerLocal) / self.state['size']
oldSize = Point(self.state['size'])
oldSize[0] = 1 if oldSize[0] == 0 else oldSize[0]
oldSize[1] = 1 if oldSize[1] == 0 else oldSize[1]
center = Point(centerLocal) / oldSize
if center is not None:
center = Point(center)
@ -826,8 +827,8 @@ class ROI(GraphicsObject):
## snap
if self.scaleSnap or (modifiers & QtCore.Qt.ControlModifier):
lp1[0] = round(lp1[0] / self.snapSize) * self.snapSize
lp1[1] = round(lp1[1] / self.snapSize) * self.snapSize
lp1[0] = round(lp1[0] / self.scaleSnapSize) * self.scaleSnapSize
lp1[1] = round(lp1[1] / self.scaleSnapSize) * self.scaleSnapSize
## preserve aspect ratio (this can override snapping)
if h['lockAspect'] or (modifiers & QtCore.Qt.AltModifier):
@ -1441,6 +1442,8 @@ class MouseDragHandler(object):
self.translateModifier = QtCore.Qt.NoModifier
self.rotateModifier = QtCore.Qt.AltModifier
self.scaleModifier = QtCore.Qt.ShiftModifier
self.rotateSpeed = 0.7
self.scaleSpeed = 1.01
def mouseDragEvent(self, ev):
roi = self.roi
@ -1485,10 +1488,11 @@ class MouseDragHandler(object):
newPos = pos + self.cursorOffset
roi.translate(newPos - roi.pos(), snap=snap, finish=False)
elif self.dragMode == 'rotate':
diff = (ev.scenePos() - ev.buttonDownScenePos()).y()
roi.setAngle(self.startState['angle'] + diff, centerLocal=ev.buttonDownPos(), snap=snap, finish=False)
diff = self.rotateSpeed * (ev.scenePos() - ev.buttonDownScenePos()).x()
angle = self.startState['angle'] - diff
roi.setAngle(angle, centerLocal=ev.buttonDownPos(), snap=snap, finish=False)
elif self.dragMode == 'scale':
diff = 1.01 ** -(ev.scenePos() - ev.buttonDownScenePos()).y()
diff = self.scaleSpeed ** -(ev.scenePos() - ev.buttonDownScenePos()).y()
roi.setSize(Point(self.startState['size']) * diff, centerLocal=ev.buttonDownPos(), snap=snap, finish=False)