[new] added some mousewheel zooming for array map

This commit is contained in:
Marcel Paffrath 2017-05-23 13:34:39 +02:00
parent 83fd0efd83
commit 840610cb18
2 changed files with 31 additions and 3 deletions

View File

@ -1 +1 @@
cf46-dirty
83fd-dirty

View File

@ -78,7 +78,8 @@ class map_projection(QtGui.QWidget):
def connectSignals(self):
self.comboBox_phase.currentIndexChanged.connect(self._refresh_drawings)
self.zoom_id = self.basemap.ax.figure.canvas.mpl_connect('scroll_event', self.zoom)
def init_graphics(self):
if not self.figure:
if not hasattr(self._parent, 'am_figure'):
@ -326,7 +327,34 @@ class map_projection(QtGui.QWidget):
def remove_annotations(self):
for annotation in self.annotations:
annotation.remove()
def zoom(self, event):
map = self.basemap
xlim = map.ax.get_xlim()
ylim = map.ax.get_ylim()
x, y = event.xdata, event.ydata
zoom = {'up': 1./2.,
'down': 2.}
if not event.xdata or not event.ydata:
return
if event.button in zoom:
factor = zoom[event.button]
xdiff = (xlim[1]-xlim[0])*factor
xl = x - 0.5 * xdiff
xr = x + 0.5 * xdiff
ydiff = (ylim[1]-ylim[0])*factor
yb = y - 0.5 * ydiff
yt = y + 0.5 * ydiff
if xl < map.xmin or yb < map.ymin or xr > map.xmax or yt > map.ymax:
xl, xr = map.xmin, map.xmax
yb, yt = map.ymin, map.ymax
map.ax.set_xlim(xl, xr)
map.ax.set_ylim(yb, yt)
map.ax.figure.canvas.draw()
def _warn(self, message):
self.qmb = QtGui.QMessageBox(QtGui.QMessageBox.Icon.Warning,
'Warning', message)