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#!/usr/bin/env python
#this is a simple translation of the scribble example that comes with GTK+
import sys
from gtk import *
pixmap = None
def configure_event(widget, event):
global pixmap
win = widget.get_window()
pixmap = create_pixmap(win, win.width, win.height, -1)
draw_rectangle(pixmap, widget.get_style().white_gc, TRUE,
0, 0, win.width, win.height)
return TRUE
def expose_event(widget, event):
area = event.area
gc = widget.get_style().fg_gc[STATE_NORMAL]
widget.draw_pixmap(gc, pixmap, area[0], area[1], area[0], area[1],
area[2], area[3])
return FALSE
def draw_brush(widget, x, y):
rect = (x-5, y-5, 10, 10)
draw_rectangle(pixmap, widget.get_style().black_gc, TRUE,
x-5, y-5, 10, 10)
widget.queue_draw()
def button_press_event(widget, event):
if event.button == 1 and pixmap != None:
draw_brush(widget, event.x, event.y)
return TRUE
def motion_notify_event(widget, event):
if event.is_hint:
x, y = event.window.pointer
state = event.window.pointer_state
else:
x = event.x; y = event.y
state = event.state
if state & GDK.BUTTON1_MASK and pixmap != None:
draw_brush(widget, x, y)
return TRUE
def main():
win = GtkWindow()
win.set_name("Test Input")
win.connect("destroy", mainquit)
win.set_border_width(5)
vbox = GtkVBox(spacing=3)
win.add(vbox)
vbox.show()
drawing_area = GtkDrawingArea()
drawing_area.size(200, 200)
vbox.pack_start(drawing_area)
drawing_area.show()
drawing_area.connect("expose_event", expose_event)
drawing_area.connect("configure_event", configure_event)
drawing_area.connect("motion_notify_event", motion_notify_event)
drawing_area.connect("button_press_event", button_press_event)
drawing_area.set_events(GDK.EXPOSURE_MASK |
GDK.LEAVE_NOTIFY_MASK |
GDK.BUTTON_PRESS_MASK |
GDK.POINTER_MOTION_MASK |
GDK.POINTER_MOTION_HINT_MASK)
button = GtkButton("Quit")
vbox.pack_start(button, expand=FALSE, fill=FALSE)
button.connect("clicked", win.destroy)
button.show()
win.show()
mainloop()
if __name__ == '__main__':
main()
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