constrain legend rect to be fully inside viewbox; simplest solution to fix #113
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@ -5,7 +5,7 @@ from pyqtgraph import (
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LinearRegionItem, mkBrush,
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mkColor, mkPen,
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PlotDataItem,
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LegendItem,
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LegendItem, ViewBox,
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)
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from nmreval.lib.colors import BaseColor, Colors
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@ -472,11 +472,18 @@ class LegendItemBlock(LegendItem):
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def mouseDragEvent(self, ev):
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if ev.button() == QtCore.Qt.LeftButton:
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ev.accept()
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dpos = ev.pos() - ev.lastPos()
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upper_left = self.pos()
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lower_right = self.pos()
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lower_right.setX(lower_right.x() + self.width())
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lower_right.setY(lower_right.y() + self.height())
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vb_rect = self.parentItem().rect()
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pos = self.pos()
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# upper left corner and a point a little more to the bottom right must be inside
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if vb_rect.contains(pos+dpos) and vb_rect.contains(pos+dpos+QtCore.QPointF(20., 20.)):
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self.autoAnchor(pos + dpos)
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# upper left and lower right corner must be inside viewbox
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if vb_rect.contains(upper_left + dpos) and vb_rect.contains(lower_right + dpos):
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self.autoAnchor(upper_left + dpos)
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else:
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self.autoAnchor(pos)
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self.autoAnchor(upper_left)
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