-
Notifications
You must be signed in to change notification settings - Fork 0
/
myChartView.py
59 lines (49 loc) · 2.06 KB
/
myChartView.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
from PyQt5.QtWidgets import QGraphicsView
from PyQt5.QtCore import pyqtSignal, QPoint, Qt, QRectF
from PyQt5.QtChart import QChartView
class QmyChartView(QChartView):
mouseMove = pyqtSignal(QPoint) ##鼠标移动
def __init__(self, parent=None):
super().__init__(parent)
self.setDragMode(QGraphicsView.RubberBandDrag)
self.__beginPoint = QPoint()
self.__endPoint = QPoint()
def mousePressEvent(self,event): ##鼠标单击
if event.button() == Qt.LeftButton :
self._beginPoint = event.pos()
super().mousePressEvent(event)
def mouseMoveEvent(self,event):##鼠标移动
point=event.pos()
self.mouseMove.emit(point) #发射信号
super().mouseMoveEvent(event)
def mouseReleaseEvent(self,event): ##鼠标框选放大,右键恢复
if event.button() == Qt.LeftButton: #左键
self.__endPoint = event.pos()
rectF=QRectF()
rectF.setTopLeft(self.__beginPoint)
rectF.setBottomRight(self.__endPoint)
self.chart().zoomIn(rectF)
elif event.button() == Qt.RightButton: #右键
self.chart().zoomReset() #鼠标右键释放,resetZoom
super().mouseReleaseEvent(event)
def keyPressEvent(self,event): ##按键按下
key=event.key()
if key==Qt.Key_Plus: #+键
self.chart().zoom(1.2)
elif key==Qt.Key_Minus:
self.chart().zoom(0.8)
elif key==Qt.Key_Left:
self.chart().scroll(10,0)
elif key==Qt.Key_Right:
self.chart().scroll(-10,0)
elif key==Qt.Key_Up:
self.chart().scroll(0,-10)
elif key==Qt.Key_Down:
self.chart().scroll(0,10)
elif key==Qt.Key_PageUp:
self.chart().scroll(0,-50)
elif key==Qt.Key_PageDown:
self.chart().scroll(0,50)
elif key==Qt.Key_Home:
self.chart().zoomReset()
super().keyPressEvent(event)