59 lines
1.6 KiB
Python
59 lines
1.6 KiB
Python
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from pyqtgraph.Qt import QtGui, QtCore
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from .GraphicsObject import GraphicsObject
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__all__ = ['ButtonItem']
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class ButtonItem(GraphicsObject):
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"""Button graphicsItem displaying an image."""
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clicked = QtCore.Signal(object)
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def __init__(self, imageFile=None, width=None, parentItem=None, pixmap=None):
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self.enabled = True
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GraphicsObject.__init__(self)
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if imageFile is not None:
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self.setImageFile(imageFile)
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elif pixmap is not None:
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self.setPixmap(pixmap)
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if width is not None:
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s = float(width) / self.pixmap.width()
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self.scale(s, s)
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if parentItem is not None:
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self.setParentItem(parentItem)
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self.setOpacity(0.7)
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def setImageFile(self, imageFile):
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self.setPixmap(QtGui.QPixmap(imageFile))
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def setPixmap(self, pixmap):
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self.pixmap = pixmap
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self.update()
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def mouseClickEvent(self, ev):
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if self.enabled:
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self.clicked.emit(self)
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def mouseHoverEvent(self, ev):
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if not self.enabled:
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return
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if ev.isEnter():
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self.setOpacity(1.0)
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else:
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self.setOpacity(0.7)
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def disable(self):
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self.enabled = False
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self.setOpacity(0.4)
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def enable(self):
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self.enabled = True
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self.setOpacity(0.7)
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def paint(self, p, *args):
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p.setRenderHint(p.Antialiasing)
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p.drawPixmap(0, 0, self.pixmap)
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def boundingRect(self):
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return QtCore.QRectF(self.pixmap.rect())
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