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Add using arrow key to move the box.

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RegisWANG 2017-05-24 23:50:32 +08:00
parent 2120d4f7b4
commit 2560085e2c
1 changed files with 41 additions and 0 deletions
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41
libs/canvas.py
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@ -551,6 +551,47 @@ class Canvas(QWidget):
self.update()
elif key == Qt.Key_Return and self.canCloseShape():
self.finalise()
elif key == Qt.Key_Left and self.selectedShape:
self.moveOnePixel('Left')
elif key == Qt.Key_Right and self.selectedShape:
self.moveOnePixel('Right')
elif key == Qt.Key_Up and self.selectedShape:
self.moveOnePixel('Up')
elif key == Qt.Key_Down and self.selectedShape:
self.moveOnePixel('Down')
def moveOnePixel(self, direction):
# print(self.selectedShape.points)
if direction == 'Left' and not self.moveOutOfBound(QPointF(-1.0, 0)):
print("move Left one pixel")
self.selectedShape.points[0] += QPointF(-1.0, 0)
self.selectedShape.points[1] += QPointF(-1.0, 0)
self.selectedShape.points[2] += QPointF(-1.0, 0)
self.selectedShape.points[3] += QPointF(-1.0, 0)
elif direction == 'Right' and not self.moveOutOfBound(QPointF(1.0, 0)):
print("move Right one pixel")
self.selectedShape.points[0] += QPointF(1.0, 0)
self.selectedShape.points[1] += QPointF(1.0, 0)
self.selectedShape.points[2] += QPointF(1.0, 0)
self.selectedShape.points[3] += QPointF(1.0, 0)
elif direction == 'Up' and not self.moveOutOfBound(QPointF(0, -1.0)):
print("move Up one pixel")
self.selectedShape.points[0] += QPointF(0, -1.0)
self.selectedShape.points[1] += QPointF(0, -1.0)
self.selectedShape.points[2] += QPointF(0, -1.0)
self.selectedShape.points[3] += QPointF(0, -1.0)
elif direction == 'Down' and not self.moveOutOfBound(QPointF(0, 1.0)):
print("move Down one pixel")
self.selectedShape.points[0] += QPointF(0, 1.0)
self.selectedShape.points[1] += QPointF(0, 1.0)
self.selectedShape.points[2] += QPointF(0, 1.0)
self.selectedShape.points[3] += QPointF(0, 1.0)
self.shapeMoved.emit()
self.repaint()
def moveOutOfBound(self, step):
points = [p1+p2 for p1, p2 in zip(self.selectedShape.points, [step]*4)]
return True in map(self.outOfPixmap, points)
def setLastLabel(self, text):
assert text