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Fix to skeleton for threaded bitmap cache.

This commit is contained in:
Juan Pablo Caram 2015-12-28 18:08:25 -05:00
parent 4fe841086e
commit 7d63ce33c6
1 changed files with 15 additions and 2 deletions
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17
PlotCanvas.py
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@ -20,7 +20,8 @@ import FlatCAMApp
class CanvasCache(QtCore.QObject): class CanvasCache(QtCore.QObject):
# Signals # Signals:
# A bitmap is ready to be displayed.
new_screen = QtCore.pyqtSignal() new_screen = QtCore.pyqtSignal()
def __init__(self, plotcanvas, dpi=50): def __init__(self, plotcanvas, dpi=50):
@ -43,9 +44,16 @@ class CanvasCache(QtCore.QObject):
def run(self): def run(self):
print "CanvasCache Thread Started!"
self.plotcanvas.update_screen_request.connect(self.on_update_req) self.plotcanvas.update_screen_request.connect(self.on_update_req)
def on_update_req(self, extents): def on_update_req(self, extents):
"""
Event handler for an updated display request.
:param extents: [xmin, xmax, ymin, ymax, zoom(optional)]
"""
# Move the requested screen portion to the main thread # Move the requested screen portion to the main thread
# and inform about the update: # and inform about the update:
@ -60,7 +68,9 @@ class PlotCanvas(QtCore.QObject):
Class handling the plotting area in the application. Class handling the plotting area in the application.
""" """
# Signals # Signals:
# Request for new bitmap to display. The parameter
# is a list with [xmin, xmax, ymin, ymax, zoom(optional)]
update_screen_request = QtCore.pyqtSignal(list) update_screen_request = QtCore.pyqtSignal(list)
def __init__(self, container): def __init__(self, container):
@ -72,6 +82,9 @@ class PlotCanvas(QtCore.QObject):
:param container: The parent container in which to draw plots. :param container: The parent container in which to draw plots.
:rtype: PlotCanvas :rtype: PlotCanvas
""" """
super(PlotCanvas, self).__init__()
# Options # Options
self.x_margin = 15 # pixels self.x_margin = 15 # pixels
self.y_margin = 25 # Pixels self.y_margin = 25 # Pixels