Added signal triggers and handlers for canvas cache.
This commit is contained in:
parent
7d63ce33c6
commit
705d038e1c
|
@ -16,6 +16,9 @@ from matplotlib.figure import Figure
|
||||||
from matplotlib.backends.backend_qt4agg import FigureCanvasQTAgg as FigureCanvas
|
from matplotlib.backends.backend_qt4agg import FigureCanvasQTAgg as FigureCanvas
|
||||||
from matplotlib.backends.backend_agg import FigureCanvasAgg
|
from matplotlib.backends.backend_agg import FigureCanvasAgg
|
||||||
import FlatCAMApp
|
import FlatCAMApp
|
||||||
|
import logging
|
||||||
|
|
||||||
|
log = logging.getLogger('base')
|
||||||
|
|
||||||
|
|
||||||
class CanvasCache(QtCore.QObject):
|
class CanvasCache(QtCore.QObject):
|
||||||
|
@ -44,7 +47,7 @@ class CanvasCache(QtCore.QObject):
|
||||||
|
|
||||||
def run(self):
|
def run(self):
|
||||||
|
|
||||||
print "CanvasCache Thread Started!"
|
log.debug("CanvasCache Thread Started!")
|
||||||
|
|
||||||
self.plotcanvas.update_screen_request.connect(self.on_update_req)
|
self.plotcanvas.update_screen_request.connect(self.on_update_req)
|
||||||
|
|
||||||
|
@ -55,6 +58,8 @@ class CanvasCache(QtCore.QObject):
|
||||||
:param extents: [xmin, xmax, ymin, ymax, zoom(optional)]
|
:param extents: [xmin, xmax, ymin, ymax, zoom(optional)]
|
||||||
"""
|
"""
|
||||||
|
|
||||||
|
log.debug("Canvas update requested: %s" % str(extents))
|
||||||
|
|
||||||
# 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:
|
||||||
|
|
||||||
|
@ -102,7 +107,7 @@ class PlotCanvas(QtCore.QObject):
|
||||||
self.axes.set_aspect(1)
|
self.axes.set_aspect(1)
|
||||||
self.axes.grid(True)
|
self.axes.grid(True)
|
||||||
|
|
||||||
# The canvas is the top level container (Gtk.DrawingArea)
|
# The canvas is the top level container (FigureCanvasQTAgg)
|
||||||
self.canvas = FigureCanvas(self.figure)
|
self.canvas = FigureCanvas(self.figure)
|
||||||
# self.canvas.setFocusPolicy(QtCore.Qt.ClickFocus)
|
# self.canvas.setFocusPolicy(QtCore.Qt.ClickFocus)
|
||||||
# self.canvas.setFocus()
|
# self.canvas.setFocus()
|
||||||
|
@ -119,13 +124,14 @@ class PlotCanvas(QtCore.QObject):
|
||||||
# Update every time the canvas is re-drawn.
|
# Update every time the canvas is re-drawn.
|
||||||
self.background = self.canvas.copy_from_bbox(self.axes.bbox)
|
self.background = self.canvas.copy_from_bbox(self.axes.bbox)
|
||||||
|
|
||||||
# Bitmap Cache
|
### Bitmap Cache
|
||||||
self.cache = CanvasCache(self)
|
self.cache = CanvasCache(self)
|
||||||
self.cache_thread = QtCore.QThread()
|
self.cache_thread = QtCore.QThread()
|
||||||
self.cache.moveToThread(self.cache_thread)
|
self.cache.moveToThread(self.cache_thread)
|
||||||
super(PlotCanvas, self).connect(self.cache_thread, QtCore.SIGNAL("started()"), self.cache.run)
|
super(PlotCanvas, self).connect(self.cache_thread, QtCore.SIGNAL("started()"), self.cache.run)
|
||||||
# self.connect()
|
# self.connect()
|
||||||
self.cache_thread.start()
|
self.cache_thread.start()
|
||||||
|
self.cache.new_screen.connect(self.on_new_screen)
|
||||||
|
|
||||||
# Events
|
# Events
|
||||||
self.canvas.mpl_connect('button_press_event', self.on_mouse_press)
|
self.canvas.mpl_connect('button_press_event', self.on_mouse_press)
|
||||||
|
@ -146,6 +152,10 @@ class PlotCanvas(QtCore.QObject):
|
||||||
self.pan_axes = []
|
self.pan_axes = []
|
||||||
self.panning = False
|
self.panning = False
|
||||||
|
|
||||||
|
def on_new_screen(self):
|
||||||
|
|
||||||
|
log.debug("Cache updated the screen!")
|
||||||
|
|
||||||
def on_key_down(self, event):
|
def on_key_down(self, event):
|
||||||
"""
|
"""
|
||||||
|
|
||||||
|
@ -275,6 +285,9 @@ class PlotCanvas(QtCore.QObject):
|
||||||
# Sync re-draw to proper paint on form resize
|
# Sync re-draw to proper paint on form resize
|
||||||
self.canvas.draw()
|
self.canvas.draw()
|
||||||
|
|
||||||
|
##### Temporary place-holder for cached update #####
|
||||||
|
self.update_screen_request.emit([0, 0, 0, 0, 0])
|
||||||
|
|
||||||
def auto_adjust_axes(self, *args):
|
def auto_adjust_axes(self, *args):
|
||||||
"""
|
"""
|
||||||
Calls ``adjust_axes()`` using the extents of the base axes.
|
Calls ``adjust_axes()`` using the extents of the base axes.
|
||||||
|
@ -327,6 +340,9 @@ class PlotCanvas(QtCore.QObject):
|
||||||
# Async re-draw
|
# Async re-draw
|
||||||
self.canvas.draw_idle()
|
self.canvas.draw_idle()
|
||||||
|
|
||||||
|
##### Temporary place-holder for cached update #####
|
||||||
|
self.update_screen_request.emit([0, 0, 0, 0, 0])
|
||||||
|
|
||||||
def pan(self, x, y):
|
def pan(self, x, y):
|
||||||
xmin, xmax = self.axes.get_xlim()
|
xmin, xmax = self.axes.get_xlim()
|
||||||
ymin, ymax = self.axes.get_ylim()
|
ymin, ymax = self.axes.get_ylim()
|
||||||
|
@ -341,6 +357,9 @@ class PlotCanvas(QtCore.QObject):
|
||||||
# Re-draw
|
# Re-draw
|
||||||
self.canvas.draw_idle()
|
self.canvas.draw_idle()
|
||||||
|
|
||||||
|
##### Temporary place-holder for cached update #####
|
||||||
|
self.update_screen_request.emit([0, 0, 0, 0, 0])
|
||||||
|
|
||||||
def new_axes(self, name):
|
def new_axes(self, name):
|
||||||
"""
|
"""
|
||||||
Creates and returns an Axes object attached to this object's Figure.
|
Creates and returns an Axes object attached to this object's Figure.
|
||||||
|
@ -434,7 +453,40 @@ class PlotCanvas(QtCore.QObject):
|
||||||
# Async re-draw (redraws only on thread idle state, uses timer on backend)
|
# Async re-draw (redraws only on thread idle state, uses timer on backend)
|
||||||
self.canvas.draw_idle()
|
self.canvas.draw_idle()
|
||||||
|
|
||||||
|
##### Temporary place-holder for cached update #####
|
||||||
|
self.update_screen_request.emit([0, 0, 0, 0, 0])
|
||||||
|
|
||||||
def on_draw(self, renderer):
|
def on_draw(self, renderer):
|
||||||
|
|
||||||
# Store background on canvas redraw
|
# Store background on canvas redraw
|
||||||
self.background = self.canvas.copy_from_bbox(self.axes.bbox)
|
self.background = self.canvas.copy_from_bbox(self.axes.bbox)
|
||||||
|
|
||||||
|
def get_axes_pixelsize(self):
|
||||||
|
"""
|
||||||
|
Axes size in pixels.
|
||||||
|
|
||||||
|
:return: Pixel width and height
|
||||||
|
:rtype: tuple
|
||||||
|
"""
|
||||||
|
bbox = self.axes.get_window_extent().transformed(self.figure.dpi_scale_trans.inverted())
|
||||||
|
width, height = bbox.width, bbox.height
|
||||||
|
width *= self.figure.dpi
|
||||||
|
height *= self.figure.dpi
|
||||||
|
return width, height
|
||||||
|
|
||||||
|
def get_density(self):
|
||||||
|
"""
|
||||||
|
Returns unit length per pixel on horizontal
|
||||||
|
and vertical axes.
|
||||||
|
|
||||||
|
:return: X and Y density
|
||||||
|
:rtype: tuple
|
||||||
|
"""
|
||||||
|
xpx, ypx = self.get_axes_pixelsize()
|
||||||
|
|
||||||
|
xmin, xmax = self.axes.get_xlim()
|
||||||
|
ymin, ymax = self.axes.get_ylim()
|
||||||
|
width = xmax - xmin
|
||||||
|
height = ymax - ymin
|
||||||
|
|
||||||
|
return width / xpx, height / ypx
|
||||||
|
|
Loading…
Reference in New Issue