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#!/usr/bin/env python
"""
This demo shows how to use a ScaledBitmap2 (which is like a scaled bitmap,
but uses memory more efficiently for large images and high zoom levels.)
"""
## Set a path to an Image file here:
ImageFile = "white_tank.jpg"
import wx
import random
## import the installed version
from wx.lib.floatcanvas import NavCanvas, FloatCanvas
## import a local version
#import sys
#sys.path.append("../")
#from floatcanvas import NavCanvas, FloatCanvas
class DrawFrame(wx.Frame):
"""
A frame used for the FloatCanvas Demo
"""
def __init__(self, *args, **kwargs):
wx.Frame.__init__(self, *args, **kwargs)
self.CreateStatusBar()
# Add the Canvas
Canvas = NavCanvas.NavCanvas(self,
ProjectionFun = None,
BackgroundColor = "DARK SLATE BLUE",
).Canvas
Canvas.MaxScale=20 # sets the maximum zoom level
self.Canvas = Canvas
self.Canvas.Bind(FloatCanvas.EVT_MOTION, self.OnMove )
# create the image:
image = wx.Image(ImageFile)
self.width, self.height = image.GetSize()
img = FloatCanvas.ScaledBitmap2( image,
(0,0),
Height=image.GetHeight(),
Position = 'tl',
)
Canvas.AddObject(img)
self.Show()
Canvas.ZoomToBB()
def OnMove(self, event):
"""
Updates the status bar with the world coordinates
"""
self.SetStatusText("%i, %i"%tuple(event.Coords))
app = wx.App(False)
F = DrawFrame(None, title="FloatCanvas Demo App", size=(700,700) )
app.MainLoop()
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