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Method to convert point on screen to work area co-ordinates #112

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Method to convert point on screen to work area co-ordinates #112

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20 changes: 20 additions & 0 deletions riscos_toolbox/objects/window.py
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Original file line number Diff line number Diff line change
Expand Up @@ -171,6 +171,26 @@ def set_toolbar_id(self, tool_bar, window_id):
swi.swi('Toolbox_ObjectMiscOp', swi_fmt,
tool_bar, self.id, Window.SetToolBars, window_id)

def screen_to_work_area(self, point):
"""Returns the point translated to work area co-ordinates of the window."""

class WindowState(ctypes.Structure):
_fields_ = [
("window_handle", ctypes.c_int32),
("visible", BBox),
("scroll", Point),
("behind", ctypes.c_int32),
("flags", ctypes.c_uint32)
]

state = WindowState()
state.window_handle = self.wimp_handle
swi.swi("Wimp_GetWindowState", ".I", ctypes.addressof(state))

return Point(point.x - state.visible.min.x + state.scroll.x,
point.y - state.visible.max.y + state.scroll.y)


class WindowAboutToBeShownEvent(AboutToBeShownEvent):
event_id = Window.AboutToBeShown

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