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import gem
import gem.vdi
# Taken from resource headers
MENU = 0
M_ABOUT = 7
M_QUIT = 16
ABOUT = 1
B_ABOUT_OK = 1
def redraw(window):
window.begin_update()
vh = window.graphics_handle()
gem.vdi.vsf_color(vh,0)
for r in window.get_invalid_rectangles():
todraw = window.intersect_work_area(r)
if todraw is not None:
gem.vdi.vs_clip(vh, True, todraw)
gem.vdi.bar(vh,todraw)
gem.vdi.vs_clip(vh, False, todraw)
window.end_update()
class AppMessageEvent(gem.MessageEvent):
def __init__(self,app):
gem.MessageEvent.__init__(self)
self.app = app
self.window = app.windows[0]
def handle_menu(self, item, title=None):
if item == M_QUIT:
self.app.send_message((gem.WM_CLOSED, 0, 0, self.window.id))
elif item == M_ABOUT:
dlg = self.app.get_resource_address(gem.R_TREE,ABOUT)
self.app.draw_tree(dlg,2)
self.app.form_do(dlg)
if title is not None:
self.app.set_menu_state(title)
def process(self):
# First call the super's process()
gem.MessageEvent.process(self)
if self.message == gem.WM_CLOSED:
self.app.event_processing = False
elif self.message == gem.WM_TOPPED:
self.window.top()
elif self.message == gem.WM_MOVED or self.message == gem.WM_SIZED:
rect = (self.get_word(4),self.get_word(5),self.get_word(6),self.get_word(7))
self.window.resize(rect)
elif self.message == gem.WM_REDRAW:
redraw(self.window)
# Menu handling
elif self.message == gem.MN_SELECTED:
self.handle_menu(self.get_word(4),title=self.get_word(3))
def start_app():
app = gem.Application()
app.load_resource("simple.rsc")
app.set_menu(MENU)
w = app.new_window((60,60,500,300),'Awesome!')
app.message_event = AppMessageEvent(app)
app.event_loop()
app.destroy()
if __name__ == "__main__":
start_app()
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