mirror of
https://github.com/m-labs/artiq.git
synced 2024-12-25 03:08:27 +08:00
scanwidget: just do QWidget (337af80)
This commit is contained in:
parent
a75ee76463
commit
5d5ef356f4
@ -9,13 +9,13 @@ from .ticker import Ticker
|
||||
logger = logging.getLogger(__name__)
|
||||
|
||||
|
||||
class ScanWidget(QtWidgets.QSlider):
|
||||
class ScanWidget(QtWidgets.QWidget):
|
||||
startChanged = QtCore.pyqtSignal(float)
|
||||
stopChanged = QtCore.pyqtSignal(float)
|
||||
numChanged = QtCore.pyqtSignal(int)
|
||||
|
||||
def __init__(self, zoomFactor=1.05, zoomMargin=.1, dynamicRange=1e9):
|
||||
QtWidgets.QSlider.__init__(self, QtCore.Qt.Horizontal)
|
||||
QtWidgets.QWidget.__init__(self)
|
||||
self.zoomMargin = zoomMargin
|
||||
self.dynamicRange = dynamicRange
|
||||
self.zoomFactor = zoomFactor
|
||||
@ -30,15 +30,13 @@ class ScanWidget(QtWidgets.QSlider):
|
||||
action.triggered.connect(self.snapRange)
|
||||
self.menu.addAction(action)
|
||||
|
||||
self.setRange(0, 4095)
|
||||
|
||||
qfm = QtGui.QFontMetrics(self.font())
|
||||
self._labelSize = QtCore.QSize(
|
||||
(self.ticker.precision + 5)*qfm.averageCharWidth(),
|
||||
qfm.lineSpacing())
|
||||
|
||||
self._start, self._stop, self._num = None, None, None
|
||||
self._axisView, self._sliderView = None, None
|
||||
self._axisView = None, None
|
||||
self._offset, self._pressed, self._dragLeft = None, None, None
|
||||
|
||||
def contextMenuEvent(self, ev):
|
||||
@ -60,21 +58,7 @@ class ScanWidget(QtWidgets.QSlider):
|
||||
return (val - a)/b
|
||||
|
||||
def _setView(self, axis_left, axis_scale):
|
||||
opt = QtWidgets.QStyleOptionSlider()
|
||||
self.initStyleOption(opt)
|
||||
g = self.style().subControlRect(QtWidgets.QStyle.CC_Slider, opt,
|
||||
QtWidgets.QStyle.SC_SliderGroove,
|
||||
self)
|
||||
h = self.style().subControlRect(QtWidgets.QStyle.CC_Slider, opt,
|
||||
QtWidgets.QStyle.SC_SliderHandle,
|
||||
self)
|
||||
slider_left = g.x() + h.width()/2
|
||||
slider_scale = (self.maximum() - self.minimum())/(
|
||||
g.width() - h.width())
|
||||
|
||||
self._axisView = axis_left, axis_scale
|
||||
self._sliderView = ((axis_left - slider_left)*slider_scale,
|
||||
axis_scale*slider_scale)
|
||||
self.update()
|
||||
|
||||
def setStart(self, val):
|
||||
@ -116,36 +100,12 @@ class ScanWidget(QtWidgets.QSlider):
|
||||
self.setStart(self._pixelToAxis(self.zoomMargin*self.width()))
|
||||
self.setStop(self._pixelToAxis((1 - self.zoomMargin)*self.width()))
|
||||
|
||||
def _getStyleOptionSlider(self, val):
|
||||
a, b = self._sliderView
|
||||
val = a + val*b
|
||||
if not (self.minimum() <= val <= self.maximum()):
|
||||
return None
|
||||
opt = QtWidgets.QStyleOptionSlider()
|
||||
self.initStyleOption(opt)
|
||||
rect = self.rect()
|
||||
qfm = QtGui.QFontMetrics(self.font())
|
||||
opt.rect = QtCore.QRect(0, 3*qfm.lineSpacing(), rect.width(),
|
||||
qfm.lineSpacing())
|
||||
opt.sliderPosition = val
|
||||
opt.sliderValue = val
|
||||
opt.subControls = QtWidgets.QStyle.SC_SliderHandle
|
||||
return opt
|
||||
|
||||
def _hitHandle(self, pos, val):
|
||||
opt = self._getStyleOptionSlider(val)
|
||||
if not opt:
|
||||
return False
|
||||
control = self.style().hitTestComplexControl(
|
||||
QtWidgets.QStyle.CC_Slider, opt, pos, self)
|
||||
if control != QtWidgets.QStyle.SC_SliderHandle:
|
||||
return False
|
||||
sr = self.style().subControlRect(QtWidgets.QStyle.CC_Slider, opt,
|
||||
QtWidgets.QStyle.SC_SliderHandle,
|
||||
self)
|
||||
self._offset = pos.x() - sr.center().x()
|
||||
self.setSliderDown(True)
|
||||
return True
|
||||
qfm = QtGui.QFontMetrics(self.font())
|
||||
val = self._axisToPixel(val)
|
||||
rect = QtCore.QRect(val - qfm.lineSpacing()/2, 3*qfm.lineSpacing(),
|
||||
qfm.lineSpacing(), qfm.lineSpacing())
|
||||
return rect.contains(pos)
|
||||
|
||||
def mousePressEvent(self, ev):
|
||||
if ev.buttons() ^ ev.button():
|
||||
@ -153,8 +113,10 @@ class ScanWidget(QtWidgets.QSlider):
|
||||
return
|
||||
if self._hitHandle(ev.pos(), self._stop):
|
||||
self._pressed = "stop"
|
||||
self._offset = ev.x() - self._axisToPixel(self._stop)
|
||||
elif self._hitHandle(ev.pos(), self._start):
|
||||
self._pressed = "start"
|
||||
self._offset = ev.x() - self._axisToPixel(self._stop)
|
||||
else:
|
||||
self._pressed = "axis"
|
||||
self._offset = ev.x()
|
||||
@ -167,20 +129,16 @@ class ScanWidget(QtWidgets.QSlider):
|
||||
if self._pressed == "stop":
|
||||
self._stop = self._pixelToAxis(ev.x() - self._offset)
|
||||
self.update()
|
||||
if self.hasTracking():
|
||||
self.stopChanged.emit(self._stop)
|
||||
self.stopChanged.emit(self._stop)
|
||||
elif self._pressed == "start":
|
||||
self._start = self._pixelToAxis(ev.x() - self._offset)
|
||||
self.update()
|
||||
if self.hasTracking():
|
||||
self.startChanged.emit(self._start)
|
||||
self.startChanged.emit(self._start)
|
||||
elif self._pressed == "axis":
|
||||
self._setView(self._dragLeft + ev.x() - self._offset,
|
||||
self._axisView[1])
|
||||
|
||||
def mouseReleaseEvent(self, ev):
|
||||
QtWidgets.QSlider.mouseReleaseEvent(self, ev)
|
||||
self.setSliderDown(False)
|
||||
if self._pressed == "start":
|
||||
self.startChanged.emit(self._start)
|
||||
elif self._pressed == "stop":
|
||||
@ -250,9 +208,8 @@ class ScanWidget(QtWidgets.QSlider):
|
||||
|
||||
for x, c in (self._start, QtCore.Qt.blue), (self._stop, QtCore.Qt.red):
|
||||
x = self._axisToPixel(x)
|
||||
if self.minimum() <= x <= self.maximum():
|
||||
painter.setPen(c)
|
||||
painter.setBrush(c)
|
||||
painter.drawPolygon(*(QtCore.QPointF(*i) for i in [
|
||||
(x, 0), (x - lineSpacing/2, lineSpacing),
|
||||
(x + lineSpacing/2, lineSpacing)]))
|
||||
painter.setPen(c)
|
||||
painter.setBrush(c)
|
||||
painter.drawPolygon(*(QtCore.QPointF(*i) for i in [
|
||||
(x, 0), (x - lineSpacing/2, lineSpacing),
|
||||
(x + lineSpacing/2, lineSpacing)]))
|
||||
|
||||
Loading…
Reference in New Issue
Block a user