102 lines
3.0 KiB
Python
Executable File
102 lines
3.0 KiB
Python
Executable File
# Demo script that implements a simple drawing program
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import upiwin
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# Save off some color values.
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WHITE = upiwin.rgb(255, 255, 255)
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LTGRAY = upiwin.rgb(204, 204, 204)
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YELLOW = upiwin.rgb(255, 255, 0)
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hdc = upiwin.DevCtxt(type='screen')
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# divide the screen into "drawing" and "command" areas
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screen_rect = hdc.get_clip_rect()
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drawing_rect = (screen_rect[0], screen_rect[1], screen_rect[2] - 60, screen_rect[3])
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command_rect = (drawing_rect[2], screen_rect[1], screen_rect[2], screen_rect[3])
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# further divide up the "command" area
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cmd1_rect = (command_rect[0], command_rect[1], command_rect[2], 60)
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cmd2_rect = (command_rect[0], 60, command_rect[2], 120)
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cmd3_rect = (command_rect[0], 120, command_rect[2], 180)
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cmd4_rect = (command_rect[0], 180, command_rect[2], command_rect[3])
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def point_in_rect(rect, x, y):
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return (x >= rect[0]) and (x < rect[2]) and (y >= rect[1]) and (y < rect[3])
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# --- Graphic feedback --
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origin_x = 0
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origin_y = 0
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current_x = 0
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current_y = 0
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def rubberband_rectangle(x, y, down, up)
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hdc.text_color = YELLOW
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hdc.rop2 = upiwin.R2_XORPEN
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if not down:
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hdc.rectangle(min(origin_x, current_x), min(origin_y, current_y), max(origin_x, current_x), max(origin_y, current_y))
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current_x = x;
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current_y = y;
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if not up:
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hdc.rectangle(min(origin_x, current_x), min(origin_y, current_y), max(origin_x, current_x), max(origin_y, current_y))
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# --- Message handlers ---
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def on_touchdown(x, y):
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if point_in_rect(drawing_rect, x, y):
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origin_x = x;
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origin_y = y;
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rubberband_rectangle(x, y, True, False)
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def on_touchmove(x, y):
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if point_in_rect(drawing_rect, x, y):
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rubberband_rectangle(x, y, False, False)
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def on_touchup(x, y):
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if point_in_rect(drawing_rect, x, y):
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rubberband_rectangle(x, y, False, True)
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def on_touchclick(x, y):
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print("Click at {0},{1}".format(x, y))
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if point_in_rect(cmd1_rect, x, y):
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print("Click command 1")
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elif point_in_rect(cmd2_rect, x, y):
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print("Click command 2")
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elif point_in_rect(cmd3_rect, x, y):
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print("Click command 3")
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elif point_in_rect(cmd4_rect, x, y):
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print("Click command 4")
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def on_button_click(button):
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if button == 4: # Button 4 = Exit app
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upiwin.post_quit_message(0)
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# --- Initialize and start message loop ---
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# Draw the basic layout.
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hdc.text_color = LTGRAY
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hdc.rectangle(cmd1_rect[0], cmd1_rect[1], cmd1_rect[2], cmd1_rect[3])
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hdc.rectangle(cmd2_rect[0], cmd2_rect[1], cmd2_rect[2], cmd2_rect[3])
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hdc.rectangle(cmd3_rect[0], cmd3_rect[1], cmd3_rect[2], cmd3_rect[3])
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hdc.rectangle(cmd4_rect[0], cmd4_rect[1], cmd4_rect[2], cmd4_rect[3])
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# Main message loop
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msg = {}
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while upiwin.get_message(msg):
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if msg['message'] == upiwin.WM_TOUCHDOWN:
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on_touchdown(msg['attrs'][0], msg['attrs'][1])
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if msg['message'] == upiwin.WM_TOUCHMOVE:
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on_touchmove(msg['attrs'][0], msg['attrs'][1])
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if msg['message'] == upiwin.WM_TOUCHUP:
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on_touchup(msg['attrs'][0], msg['attrs'][1])
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if msg['message'] == upiwin.WM_TOUCHCLICK:
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on_touchclick(msg['attrs'][0], msg['attrs'][1])
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elif msg['message'] == upiwin.WM_HWBUTTONCLICK:
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on_button_click(msg['attrs'][0])
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