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Added methods for getting keyboard and mouse clicks to image_window's pyhton API.

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pull/1795/head
Davis King 5 years ago committed by Davis King
parent 8001b924e6
commit 6de82e2417
1 changed files with 162 additions and 1 deletions
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163
tools/python/src/gui.cpp
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@ -107,6 +107,78 @@ void add_overlay_pylist (
win.add_overlay(rects, color);
}
void wait_for_keypress_char(image_window& win, const char wait_key) {
unsigned long key;
bool is_printable;
while(win.get_next_keypress(key,is_printable))
{
if (is_printable && (char)key == wait_key)
return;
}
}
void wait_for_keypress_other(image_window& win, const base_window::non_printable_keyboard_keys wait_key) {
unsigned long key;
bool is_printable;
while(win.get_next_keypress(key,is_printable))
{
if (!is_printable && key == wait_key)
return;
}
}
py::object get_next_double_click(image_window& win) {
point p;
if (win.get_next_double_click(p))
return py::cast(p);
else
return py::none();
}
py::object get_next_keypress(image_window& win, bool get_keyboard_modifiers)
{
unsigned long key;
bool is_printable;
unsigned long state;
auto state_to_list = [&]() {
py::list mods;
if (state&base_window::KBD_MOD_SHIFT) mods.append(base_window::KBD_MOD_SHIFT);
if (state&base_window::KBD_MOD_CONTROL) mods.append(base_window::KBD_MOD_CONTROL);
if (state&base_window::KBD_MOD_ALT) mods.append(base_window::KBD_MOD_ALT);
if (state&base_window::KBD_MOD_META) mods.append(base_window::KBD_MOD_META);
if (state&base_window::KBD_MOD_CAPS_LOCK) mods.append(base_window::KBD_MOD_CAPS_LOCK);
if (state&base_window::KBD_MOD_NUM_LOCK) mods.append(base_window::KBD_MOD_NUM_LOCK);
if (state&base_window::KBD_MOD_SCROLL_LOCK) mods.append(base_window::KBD_MOD_SCROLL_LOCK);
return mods;
};
if(win.get_next_keypress(key, is_printable, state))
{
if (is_printable)
{
if (get_keyboard_modifiers)
return py::make_tuple((char)key, state_to_list());
else
return py::cast((char)key);
}
else
{
if (get_keyboard_modifiers)
return py::make_tuple(static_cast<base_window::non_printable_keyboard_keys>(key), state_to_list());
else
return py::cast(static_cast<base_window::non_printable_keyboard_keys>(key));
}
}
else
{
if (get_keyboard_modifiers)
return py::make_tuple(py::none(), py::none());
else
return py::none();
}
}
template <typename point_type>
void add_overlay_circle (
image_window& win,
@ -241,7 +313,96 @@ void bind_gui(py::module& m)
.def("add_overlay", add_overlay_pylist, py::arg("objects"), py::arg("color")=rgb_pixel(255,0,0),
"Adds all the overlayable objects, uses the given color.")
.def("wait_until_closed", &type::wait_until_closed,
"This function blocks until the window is closed.");
"This function blocks until the window is closed.")
.def("is_closed", &type::is_closed,
"returns true if this window has been closed, false otherwise. (Note that closed windows do not receive any callbacks at all. They are also not visible on the screen.)")
.def("get_next_double_click", get_next_double_click,
"Blocks until the user double clicks on the image or closes the window. Returns a dlib.point indicating the pixel the user clicked on or None if the window as closed.")
.def("wait_for_keypress", wait_for_keypress_char, py::arg("key"),
"Blocks until the user presses the given key or closes the window.")
.def("wait_for_keypress", wait_for_keypress_other, py::arg("key"),
"Blocks until the user presses the given key or closes the window.")
.def("get_next_keypress", get_next_keypress, py::arg("get_keyboard_modifiers")=false,
"Blocks until the user presses a key on their keyboard or the window is closed. \n\
\n\
ensures \n\
- if (get_keyboard_modifiers==True) then \n\
- returns a tuple of (key_pressed, keyboard_modifiers_active) \n\
- else \n\
- returns just the key that was pressed. \n\
- The returned key is either a str containing the letter that was pressed, or \n\
an element of the dlib.non_printable_keyboard_keys enum. \n\
- keyboard_modifiers_active, if returned, is a list of elements of the \n\
dlib.keyboard_mod_keys enum. They tell you if a key like shift was being held \n\
down or not during the button press. \n\
- If the window is closed before the user presses a key then this function \n\
returns with all outputs set to None."
/*!
Blocks until the user presses a key on their keyboard or the window is closed.
ensures
- if (get_keyboard_modifiers==True) then
- returns a tuple of (key_pressed, keyboard_modifiers_active)
- else
- returns just the key that was pressed.
- The returned key is either a str containing the letter that was pressed, or
an element of the dlib.non_printable_keyboard_keys enum.
- keyboard_modifiers_active, if returned, is a list of elements of the
dlib.keyboard_mod_keys enum. They tell you if a key like shift was being held
down or not during the button press.
- If the window is closed before the user presses a key then this function
returns with all outputs set to None.
!*/
);
}
py::enum_<base_window::non_printable_keyboard_keys>(m,"non_printable_keyboard_keys")
.value("KEY_BACKSPACE", base_window::KEY_BACKSPACE)
.value("KEY_SHIFT", base_window::KEY_SHIFT)
.value("KEY_CTRL", base_window::KEY_CTRL)
.value("KEY_ALT", base_window::KEY_ALT)
.value("KEY_PAUSE", base_window::KEY_PAUSE)
.value("KEY_CAPS_LOCK", base_window::KEY_CAPS_LOCK)
.value("KEY_ESC", base_window::KEY_ESC)
.value("KEY_PAGE_UP", base_window::KEY_PAGE_UP)
.value("KEY_PAGE_DOWN", base_window::KEY_PAGE_DOWN)
.value("KEY_END", base_window::KEY_END)
.value("KEY_HOME", base_window::KEY_HOME)
.value("KEY_LEFT", base_window::KEY_LEFT)
.value("KEY_RIGHT", base_window::KEY_RIGHT)
.value("KEY_UP", base_window::KEY_UP)
.value("KEY_DOWN", base_window::KEY_DOWN)
.value("KEY_INSERT", base_window::KEY_INSERT)
.value("KEY_DELETE", base_window::KEY_DELETE)
.value("KEY_SCROLL_LOCK", base_window::KEY_SCROLL_LOCK)
.value("KEY_F1", base_window::KEY_F1)
.value("KEY_F2", base_window::KEY_F2)
.value("KEY_F3", base_window::KEY_F3)
.value("KEY_F4", base_window::KEY_F4)
.value("KEY_F5", base_window::KEY_F5)
.value("KEY_F6", base_window::KEY_F6)
.value("KEY_F7", base_window::KEY_F7)
.value("KEY_F8", base_window::KEY_F8)
.value("KEY_F9", base_window::KEY_F9)
.value("KEY_F10", base_window::KEY_F10)
.value("KEY_F11", base_window::KEY_F11)
.value("KEY_F12", base_window::KEY_F12)
.export_values()
// allow someone to compare this enum to a string since the return from get_next_keypress()
// can be either this enum or a string and forcing the user to type check with an if is
// maddening.
.def("__eq__", [](base_window::non_printable_keyboard_keys, const std::string&){ return false; });
py::enum_<base_window::keyboard_state_masks>(m,"keyboard_mod_keys")
.value("KBD_MOD_NONE", base_window::KBD_MOD_NONE)
.value("KBD_MOD_SHIFT", base_window::KBD_MOD_SHIFT)
.value("KBD_MOD_CONTROL", base_window::KBD_MOD_CONTROL)
.value("KBD_MOD_ALT", base_window::KBD_MOD_ALT)
.value("KBD_MOD_META", base_window::KBD_MOD_META)
.value("KBD_MOD_CAPS_LOCK", base_window::KBD_MOD_CAPS_LOCK)
.value("KBD_MOD_NUM_LOCK", base_window::KBD_MOD_NUM_LOCK)
.value("KBD_MOD_SCROLL_LOCK", base_window::KBD_MOD_SCROLL_LOCK)
.export_values();
}
#endif

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