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#!/usr/bin/env python
"""
This is a little demo of how to make clickable (and changeable) objects with
FloatCanvas
Also an example of constant size, rather than the usual zooming and panning
Developed as an answer to a question on the wxPYhton mailing lilst:
"get panel id while dragging across several panels'
April 5, 2012
"""
import random
import wx
## import the installed version
from wx.lib.floatcanvas import NavCanvas, FloatCanvas
## import a local version
#import sys
#sys.path.append("../")
#from floatcanvas import FloatCanvas as FC
colors = [ (255, 0 , 0 ),
(0 , 255, 0 ),
(0 , 0, 255),
(255, 255, 0 ),
(255, 0, 255),
(0 , 255, 255),
]
class DrawFrame(wx.Frame):
"""
A frame used for the Demo
"""
def __init__(self, *args, **kwargs):
wx.Frame.__init__(self, *args, **kwargs)
# Add the Canvas
Canvas = FloatCanvas.FloatCanvas(self,
size = (500,500),
ProjectionFun = None,
Debug = 0,
BackgroundColor = "Black",
)
self.Canvas = Canvas
self.Canvas.Bind(wx.EVT_SIZE, self.OnSize)
# build the squares:
w = 10
dx = 14
for i in range(9):
for j in range(9):
Rect = Canvas.AddRectangle((i*dx, j*dx), (w, w), FillColor="White", LineStyle = None)
Outline = Canvas.AddRectangle((i*dx, j*dx), (w, w),
FillColor=None,
LineWidth=4,
LineColor='Red',
LineStyle=None)
Rect.indexes = (i,j)
Rect.outline = Outline
Rect.Bind(FloatCanvas.EVT_FC_LEFT_DOWN, self.SquareHitLeft)
Rect.Bind(FloatCanvas.EVT_FC_ENTER_OBJECT, self.SquareEnter)
Rect.Bind(FloatCanvas.EVT_FC_LEAVE_OBJECT, self.SquareLeave)
self.Show()
Canvas.ZoomToBB()
def SquareHitLeft(self, square):
print("square hit:", square.indexes)
# set a random color
c = random.sample(colors, 1)[0]
square.SetFillColor( c )
self.Canvas.Draw(True)
def SquareEnter(self, square):
print("entering square:", square.indexes)
square.outline.SetLineStyle("Solid")
self.Canvas.Draw(True)
def SquareLeave(self, square):
print("leaving square:", square.indexes)
square.outline.SetLineStyle(None)
self.Canvas.Draw(True)
def OnSize(self, event):
"""
re-zooms the canvas to fit the window
"""
print("in OnSize")
self.Canvas.ZoomToBB()
event.Skip()
app = wx.App(False)
F = DrawFrame(None, title="FloatCanvas Demo App", size=(700,700) )
app.MainLoop()
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