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import math
import random
import moderngl_window
class WindowEvents(moderngl_window.WindowConfig):
"""
Demonstrates handling mouse, keyboard, render and resize events
"""
gl_version = (3, 3)
title = "Window Events"
cursor = True
vsync = True
def __init__(self, **kwargs):
super().__init__(**kwargs)
# self.wnd.exit_key = None
def on_render(self, time: float, frametime: float):
self.ctx.clear(
(math.sin(time) + 1.0) / 2,
(math.sin(time + 2) + 1.0) / 2,
(math.sin(time + 3) + 1.0) / 2,
)
# We can also check if a key is in press state here
if self.wnd.is_key_pressed(self.wnd.keys.SPACE):
print("User is holding SPACE button")
def on_resize(self, width: int, height: int):
print("Window was resized. buffer size is {} x {}".format(width, height))
def on_close(self):
print("Window is closing")
def on_iconify(self, iconify: bool):
"""Window hide/minimize and restore"""
print("Window was iconified:", iconify)
def on_key_event(self, key, action, modifiers):
keys = self.wnd.keys
# Key presses
if action == keys.ACTION_PRESS:
if key == keys.ESCAPE:
print("ESCAPE key was pressed")
if key == keys.SPACE:
print("SPACE key was pressed")
# Using modifiers (shift and ctrl)
if key == keys.Z and modifiers.shift:
print("Shift + Z was pressed")
if key == keys.Z and modifiers.ctrl:
print("ctrl + Z was pressed")
if key == keys.Z and modifiers.alt:
print("alt + Z was pressed")
# Key releases
elif action == self.wnd.keys.ACTION_RELEASE:
if key == keys.SPACE:
print("SPACE key was released")
if action == keys.ACTION_PRESS:
# Move the window around with AWSD
if key == keys.A:
self.wnd.position = self.wnd.position[0] - 20, self.wnd.position[1]
if key == keys.D:
self.wnd.position = self.wnd.position[0] + 20, self.wnd.position[1]
if key == keys.W:
self.wnd.position = self.wnd.position[0], self.wnd.position[1] - 20
if key == keys.S:
self.wnd.position = self.wnd.position[0], self.wnd.position[1] + 20
# Resize window around with Shift + AWSD
if self.wnd.modifiers.shift and key == keys.A:
self.wnd.size = self.wnd.size[0] - 50, self.wnd.size[1]
if self.wnd.modifiers.shift and key == keys.D:
self.wnd.size = self.wnd.size[0] + 50, self.wnd.size[1]
if self.wnd.modifiers.shift and key == keys.W:
self.wnd.size = self.wnd.size[0], self.wnd.size[1] - 50
if self.wnd.modifiers.shift and key == keys.S:
self.wnd.size = self.wnd.size[0], self.wnd.size[1] + 50
# toggle cursor
if key == keys.C:
self.wnd.cursor = not self.wnd.cursor
# Shuffle window tittle
if key == keys.T:
title = list(self.wnd.title)
random.shuffle(title)
self.wnd.title = "".join(title)
# Toggle mouse exclusivity
if key == keys.M:
self.wnd.mouse_exclusivity = not self.wnd.mouse_exclusivity
# Check number vs. numpad
if key == keys.NUMBER_0:
print("NUMBER 0")
if key == keys.NUMPAD_0:
print("NUMPAD 0")
def on_mouse_position_event(self, x, y, dx, dy):
print("Mouse position pos={} {} delta={} {}".format(x, y, dx, dy))
def on_mouse_drag_event(self, x, y, dx, dy):
print("Mouse drag pos={} {} delta={} {}".format(x, y, dx, dy))
def on_mouse_scroll_event(self, x_offset, y_offset):
print("mouse_scroll_event", x_offset, y_offset)
def on_mouse_press_event(self, x, y, button):
print("Mouse button {} pressed at {}, {}".format(button, x, y))
print("Mouse states:", self.wnd.mouse_states)
def on_mouse_release_event(self, x: int, y: int, button: int):
print("Mouse button {} released at {}, {}".format(button, x, y))
print("Mouse states:", self.wnd.mouse_states)
def on_unicode_char_entered(self, char):
print("unicode_char_entered:", char)
if __name__ == "__main__":
moderngl_window.run_window_config(WindowEvents)
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