163 lines
4.6 KiB
Python
Executable File
163 lines
4.6 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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RED = upiwin.rgb(255, 0, 0)
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GREEN = upiwin.rgb(0, 255, 0)
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BLUE = upiwin.rgb(0, 0, 255)
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CYAN = upiwin.rgb(0, 255, 255)
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MAGENTA = upiwin.rgb(255, 0, 255)
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YELLOW = upiwin.rgb(255, 255, 0)
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# Get the stock bitmaps.
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bmp_freehand = upiwin.Bitmap(stock='freehand')
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bmp_line = upiwin.Bitmap(stock='line')
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bmp_rect = upiwin.Bitmap(stock='rect')
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bmp_fillrect = upiwin.Bitmap(stock='fillrect')
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hdc = upiwin.DevCtxt(type='screen')
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hdc_bits = upiwin.DevCtxt(type='memory')
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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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# --- Color selections ---
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color_list = [WHITE, RED, GREEN, BLUE, CYAN, MAGENTA, YELLOW]
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current_color = 0
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def draw_current_color():
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hdc.text_color = color_list[current_color]
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hdc.solid_rectangle(cmd2_rect[0] + 6, cmd2_rect[1] + 6, cmd2_rect[0] + 54, cmd2_rect[1] + 54)
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def select_next_color():
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current_color += 1
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if current_color == len(color_list):
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current_color = 0
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draw_current_color()
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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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global current_x, current_y
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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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def rubberband_line(x, y, down, up):
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global current_x, current_y
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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.move_to(origin_x, origin_y)
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hdc.line_to(current_x, 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.move_to(origin_x, origin_y)
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hdc.line_to(current_x, current_y)
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# --- Tool definitions ---
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tool_list = [
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{ 'icon': bmp_freehand },
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{ 'icon': bmp_line },
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{ 'icon': bmp_rect },
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{ 'icon': bmp_fillrect }
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]
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current_tool = 0
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def draw_current_tool():
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hdc_bits.select_object(tool_list[current_tool]['icon'])
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hdc.bitblt(cmd1_rect[0] + 6, cmd1_rect[1] + 6, cmd1_rect[0] + 54, cmd1_rect[1] + 54, hdc_bits, 0, 0, 0)
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def select_next_tool():
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current_tool += 1
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if current_tool == len(tool_list):
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current_tool = 0
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draw_current_tool()
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# --- Message handlers ---
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def on_touchdown(x, y):
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global origin_x, origin_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_line(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_line(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_line(x, y, False, True)
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def on_touchclick(x, y):
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if point_in_rect(cmd1_rect, x, y):
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select_next_tool()
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elif point_in_rect(cmd2_rect, x, y):
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select_next_color()
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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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draw_current_tool()
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draw_current_color()
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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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