projects / OpenSPARC-T2-DV / blame
| Commit | Line | Data |
|---|---|---|
| 86530b38 AT |
1 | title = 'Pmw.ScrolledCanvas demonstration' |
| 2 | ||
| 3 | # Import Pmw from this directory tree. | |
| 4 | import sys | |
| 5 | sys.path[:0] = ['../../..'] | |
| 6 | ||
| 7 | import Tkinter | |
| 8 | import Pmw | |
| 9 | ||
| 10 | class Demo: | |
| 11 | def __init__(self, parent): | |
| 12 | # Create the ScrolledCanvas. | |
| 13 | self.sc = Pmw.ScrolledCanvas(parent, | |
| 14 | borderframe = 1, | |
| 15 | labelpos = 'n', | |
| 16 | label_text = 'ScrolledCanvas', | |
| 17 | usehullsize = 1, | |
| 18 | hull_width = 400, | |
| 19 | hull_height = 300, | |
| 20 | ) | |
| 21 | ||
| 22 | # Create a group widget to contain the scrollmode options. | |
| 23 | w = Pmw.Group(parent, tag_text='Scroll mode') | |
| 24 | w.pack(side = 'bottom', padx = 5, pady = 5) | |
| 25 | ||
| 26 | hmode = Pmw.OptionMenu(w.interior(), | |
| 27 | labelpos = 'w', | |
| 28 | label_text = 'Horizontal:', | |
| 29 | items = ['none', 'static', 'dynamic'], | |
| 30 | command = self.sethscrollmode, | |
| 31 | menubutton_width = 8, | |
| 32 | ) | |
| 33 | hmode.pack(side = 'left', padx = 5, pady = 5) | |
| 34 | hmode.invoke('dynamic') | |
| 35 | ||
| 36 | vmode = Pmw.OptionMenu(w.interior(), | |
| 37 | labelpos = 'w', | |
| 38 | label_text = 'Vertical:', | |
| 39 | items = ['none', 'static', 'dynamic'], | |
| 40 | command = self.setvscrollmode, | |
| 41 | menubutton_width = 8, | |
| 42 | ) | |
| 43 | vmode.pack(side = 'left', padx = 5, pady = 5) | |
| 44 | vmode.invoke('dynamic') | |
| 45 | ||
| 46 | buttonBox = Pmw.ButtonBox(parent) | |
| 47 | buttonBox.pack(side = 'bottom') | |
| 48 | buttonBox.add('yview', text = 'Show\nyview', command = self.showYView) | |
| 49 | buttonBox.add('scroll', text = 'Page\ndown', command = self.pageDown) | |
| 50 | buttonBox.add('center', text = 'Center', command = self.centerPage) | |
| 51 | ||
| 52 | # Pack this last so that the buttons do not get shrunk when | |
| 53 | # the window is resized. | |
| 54 | self.sc.pack(padx = 5, pady = 5, fill = 'both', expand = 1) | |
| 55 | ||
| 56 | self.sc.component('canvas').bind('<1>', self.addcircle) | |
| 57 | ||
| 58 | testEntry = Tkinter.Entry(parent) | |
| 59 | self.sc.create_line(20, 20, 100, 100) | |
| 60 | self.sc.create_oval(100, 100, 200, 200, fill = 'green') | |
| 61 | self.sc.create_text(100, 20, anchor = 'nw', | |
| 62 | text = 'Click in the canvas\nto draw ovals', | |
| 63 | font = testEntry.cget('font')) | |
| 64 | button = Tkinter.Button(self.sc.interior(), | |
| 65 | text = 'Hello,\nWorld!\nThis\nis\na\nbutton.') | |
| 66 | self.sc.create_window(200, 200, | |
| 67 | anchor='nw', | |
| 68 | window = button) | |
| 69 | ||
| 70 | # Set the scroll region of the canvas to include all the items | |
| 71 | # just created. | |
| 72 | self.sc.resizescrollregion() | |
| 73 | ||
| 74 | self.colours = ('red', 'green', 'blue', 'yellow', 'cyan', 'magenta', | |
| 75 | 'black', 'white') | |
| 76 | self.oval_count = 0 | |
| 77 | self.rand = 12345 | |
| 78 | ||
| 79 | def sethscrollmode(self, tag): | |
| 80 | self.sc.configure(hscrollmode = tag) | |
| 81 | ||
| 82 | def setvscrollmode(self, tag): | |
| 83 | self.sc.configure(vscrollmode = tag) | |
| 84 | ||
| 85 | def addcircle(self, event): | |
| 86 | x = self.sc.canvasx(event.x) | |
| 87 | y = self.sc.canvasy(event.y) | |
| 88 | width = 10 + self.random() % 100 | |
| 89 | height = 10 + self.random() % 100 | |
| 90 | self.sc.create_oval( | |
| 91 | x - width, y - height, x + width, y + height, | |
| 92 | fill = self.colours[self.oval_count]) | |
| 93 | self.oval_count = (self.oval_count + 1) % len(self.colours) | |
| 94 | self.sc.resizescrollregion() | |
| 95 | ||
| 96 | # Simple random number generator. | |
| 97 | def random(self): | |
| 98 | self.rand = (self.rand * 125) % 2796203 | |
| 99 | return self.rand | |
| 100 | ||
| 101 | def showYView(self): | |
| 102 | print self.sc.yview() | |
| 103 | ||
| 104 | def pageDown(self): | |
| 105 | self.sc.yview('scroll', 1, 'page') | |
| 106 | ||
| 107 | def centerPage(self): | |
| 108 | top, bottom = self.sc.yview() | |
| 109 | size = bottom - top | |
| 110 | middle = 0.5 - size / 2 | |
| 111 | self.sc.yview('moveto', middle) | |
| 112 | ||
| 113 | ###################################################################### | |
| 114 | ||
| 115 | # Create demo in root window for testing. | |
| 116 | if __name__ == '__main__': | |
| 117 | root = Tkinter.Tk() | |
| 118 | Pmw.initialise(root) | |
| 119 | root.title(title) | |
| 120 | ||
| 121 | exitButton = Tkinter.Button(root, text = 'Exit', command = root.destroy) | |
| 122 | exitButton.pack(side = 'bottom') | |
| 123 | widget = Demo(root) | |
| 124 | root.mainloop() |