本文整理汇总了Python中canvas.Canvas.zoom方法的典型用法代码示例。如果您正苦于以下问题：Python Canvas.zoom方法的具体用法？Python Canvas.zoom怎么用？Python Canvas.zoom使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类canvas.Canvas的用法示例。
在下文中一共展示了Canvas.zoom方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: __init__
# 需要导入模块: from canvas import Canvas [as 别名]
# 或者: from canvas.Canvas import zoom [as 别名]
class PositionTracker3:
"""
Main GUI for the Position Tracker
"""
def __init__(self):
self.gladefile = os.path.join(__location__, "pt3.glade")
self.builder = Gtk.Builder()
self.builder.add_from_file(self.gladefile)
#Create & Link canvas
self.canvas_box = self.builder.get_object("canvasBox")
self.canvas = Canvas()
self.watcher = VarWatcher(self.canvas)
self.canvas.show()
self.canvas_box.pack_start(self.canvas, True, True, 0)
# Automatically connect signals to functions defined above
# as specified in the glade file
self.builder.connect_signals(self)
# Get the main window
self.window = self.builder.get_object("ptWindow")
self.window.show()
self.window.connect("key-press-event", self.key_press)
#Ctrl+C handling
def handler(signum, frame):
self.log.warning("INTERRUPT: exiting gracefully")
self.window_destroy()
signal.signal(signal.SIGTERM, handler)
signal.signal(signal.SIGINT, handler)
#Fire up the main window
self.log.info("Launching GUI. Welcome to PT3! Press %s for help" % conf.key_binds["help"])
Gtk.main()
def window_destroy(self, data=None):
# Close this application
self.watcher.kill()
self.logger.critical("Program shutdown!")
self.canvas.kill()
Gtk.main_quit()
def help_menu(self):
dialog = HelpDialog()
response = dialog.run()
dialog.destroy()
def key_press(self,window,event):
key = Gdk.keyval_name(event.keyval)
if event.state == Gdk.ModifierType.CONTROL_MASK:
key = "ctrl " + key
if event.state == Gdk.ModifierType.SHIFT_MASK:
key = "shift " + key
key = string.lower(key)
if key == "ctrl w":
self.window_destroy()
if key == conf.key_binds["bindings toggle"]:
conf.bindings_on = not conf.bindings_on
self.log.info("Key Bindings " + ("on" if conf.bindings_on else "off"))
if not conf.bindings_on:
return
if key == conf.key_binds['quit']:
self.window_destroy()
elif key == conf.key_binds["help"]:
self.help_menu()
elif key == conf.key_binds["zoom in"]:
self.canvas.zoom(conf.ZOOM_FACTOR)
elif key == conf.key_binds["zoom out"]:
self.canvas.zoom(1./conf.ZOOM_FACTOR)
elif key == conf.key_binds["follow sub"]:
self.canvas.follow_sub(True)
elif key == conf.key_binds["follow position only"]:
self.canvas.follow_sub(False)
elif key == conf.key_binds["reset path"]:
self.canvas.reset_path()
elif key == conf.key_binds["pan up"]:
self.canvas.pan(0, conf.PAN_DIST)
elif key == conf.key_binds["pan up large"]:
self.canvas.pan(0, conf.PAN_DIST_LARGE)
elif key == conf.key_binds["pan down"]:
self.canvas.pan(0, -conf.PAN_DIST)
elif key == conf.key_binds["pan down large"]:
self.canvas.pan(0, -conf.PAN_DIST_LARGE)
elif key == conf.key_binds["pan right"]:
self.canvas.pan(-conf.PAN_DIST, 0)
elif key == conf.key_binds["pan right large"]:
self.canvas.pan(-conf.PAN_DIST_LARGE, 0)
elif key == conf.key_binds["pan left"]:
self.canvas.pan(conf.PAN_DIST, 0)
elif key == conf.key_binds["pan left large"]:
self.canvas.pan(conf.PAN_DIST_LARGE, 0)
elif key == conf.key_binds["center view"]:
#.........这里部分代码省略.........