upiwin/scripts/test_clipping.py

53 lines
1.6 KiB
Python
Executable File

# UPIWIN - Micro Pi Windowing Framework Kernel
# Copyright (C) 2019 Amy Bowersox/Erbosoft Metaverse Design Solutions
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
# ------------------------------------------------------------------------
# Test of line clipping
import upiwin
hdc = upiwin.DevCtxt(type='screen')
hdc.text_color = 0xFFFFFF # white
hdc.rectangle(99, 99, 200, 200)
clip = hdc.get_clip_rect()
hdc.set_clip_rect(100, 100, 200, 200)
hdc.text_color = 0x0000FF # red
hdc.move_to(50, 200)
hdc.line_to(200, 50)
hdc.text_color = 0x00FF00 # green
hdc.move_to(250, 200)
hdc.line_to(100, 50)
hdc.text_color = 0xFF0000 # blue
hdc.move_to(50, 100)
hdc.line_to(200, 250)
hdc.text_color = 0x00FFFF # yellow
hdc.move_to(250, 100)
hdc.line_to(100, 250)
hdc.set_clip_rect(clip[0], clip[1], clip[2], clip[3])
msg = {}
while upiwin.get_message(msg):
if msg['message'] == upiwin.WM_HWBUTTONUP:
bn = msg['attrs'][0]
if bn == 4:
print("Quitting the application.")
upiwin.post_quit_message(0)