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Fix scale-rotate ROI handler to allow to use a random scale axis and not only x/y

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The code relative to scaleSnap is maybe broken
This commit is contained in:
Valentin Valls 2014-05-14 11:38:24 +02:00 committed by Martin
parent 1044a7b6c4
commit 9456d07ae8
1 changed files with 11 additions and 16 deletions
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27
pyqtgraph/graphicsItems/ROI.py
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@ -572,8 +572,6 @@ class ROI(GraphicsObject):
"""
pos = Point(pos)
center = Point(center)
if pos[0] != center[0] and pos[1] != center[1]:
raise Exception("Scale/rotate handles must have either the same x or y coordinate as their center point.")
return self.addHandle({'name': name, 'type': 'sr', 'center': center, 'pos': pos, 'item': item}, index=index)
def addRotateFreeHandle(self, pos, center, axes=None, item=None, name=None, index=None):
@ -952,13 +950,6 @@ class ROI(GraphicsObject):
h['pos'] = self.mapFromParent(p1)
elif h['type'] == 'sr':
if h['center'][0] == h['pos'][0]:
scaleAxis = 1
nonScaleAxis=0
else:
scaleAxis = 0
nonScaleAxis=1
try:
if lp1.length() == 0 or lp0.length() == 0:
return
@ -971,15 +962,19 @@ class ROI(GraphicsObject):
if self.rotateSnap or (modifiers & QtCore.Qt.ControlModifier):
ang = round(ang / self.rotateSnapAngle) * self.rotateSnapAngle
hs = abs(h['pos'][scaleAxis] - c[scaleAxis])
newState['size'][scaleAxis] = lp1.length() / hs
newState['size'][0] = self.state['size'][0] * lp1.length() / lp0.length()
newState['size'][1] = self.state['size'][1] * lp1.length() / lp0.length()
#if self.scaleSnap or (modifiers & QtCore.Qt.ControlModifier):
if self.scaleSnap: ## use CTRL only for angular snap here.
newState['size'][scaleAxis] = round(newState['size'][scaleAxis] / self.snapSize) * self.snapSize
if newState['size'][scaleAxis] == 0:
newState['size'][scaleAxis] = 1
if self.aspectLocked:
newState['size'][nonScaleAxis] = newState['size'][scaleAxis]
newState['size'][0] = round(newState['size'][0] / self.snapSize) * self.snapSize
newState['size'][1] = round(newState['size'][1] / self.snapSize) * self.snapSize
if newState['size'][0] == 0:
newState['size'][0] = 1
if newState['size'][1] == 0:
newState['size'][1] = 1
# MC TODO what about this:
# if self.aspectLocked:
# newState['size'][nonScaleAxis] = newState['size'][scaleAxis]
c1 = c * newState['size']
tr = QtGui.QTransform()