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Add support for native mouse cursors in pyglet #213

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Merged
KinoxKlark merged 1 commit into from
Aug 9, 2021
Merged

Add support for native mouse cursors in pyglet #213

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43 changes: 42 additions & 1 deletion imgui/integrations/pyglet.py
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Original file line number Diff line number Diff line change
Expand Up @@ -3,7 +3,7 @@
import warnings
from distutils.version import LooseVersion

from pyglet.window import key, mouse
from pyglet.window import key, mouse, Window
import pyglet

import imgui
Expand Down Expand Up @@ -36,6 +36,24 @@ class PygletMixin(object):
key.Z: imgui.KEY_Z,
}

MOUSE_CURSORS = {
imgui.MOUSE_CURSOR_ARROW: Window.CURSOR_DEFAULT,
imgui.MOUSE_CURSOR_TEXT_INPUT: Window.CURSOR_TEXT,
imgui.MOUSE_CURSOR_RESIZE_ALL: Window.CURSOR_SIZE,
imgui.MOUSE_CURSOR_RESIZE_NS: Window.CURSOR_SIZE_UP_DOWN,
imgui.MOUSE_CURSOR_RESIZE_EW: Window.CURSOR_SIZE_LEFT_RIGHT,
imgui.MOUSE_CURSOR_RESIZE_NESW: Window.CURSOR_SIZE_DOWN_LEFT,
imgui.MOUSE_CURSOR_RESIZE_NWSE: Window.CURSOR_SIZE_DOWN_RIGHT,
imgui.MOUSE_CURSOR_HAND: Window.CURSOR_HAND
}

def __init__(self):
super(PygletMixin, self).__init__()
self._cursor = -2
self._window = None
# Let Dear imgui know we have mouse cursor support
self.io.backend_flags |= imgui.BACKEND_HAS_MOUSE_CURSORS

def _set_pixel_ratio(self, window):
window_size = window.get_size()
self.io.display_size = window_size
Expand All @@ -54,6 +72,7 @@ def _set_pixel_ratio(self, window):


def _attach_callbacks(self, window):
self._window = window
window.push_handlers(
self.on_mouse_motion,
self.on_key_press,
Expand Down Expand Up @@ -85,6 +104,20 @@ def _on_mods_change(self, mods, key_pressed = 0):
self.io.key_shift = mods & key.MOD_SHIFT or \
key_pressed in (key.LSHIFT, key.RSHIFT)

def _handle_mouse_cursor(self):
if self.io.config_flags & imgui.CONFIG_NO_MOUSE_CURSOR_CHARGE:
return

mouse_cursor = imgui.get_mouse_cursor()
window = self._window
if self._cursor != mouse_cursor:
self._cursor = mouse_cursor
if mouse_cursor == imgui.MOUSE_CURSOR_NONE:
window.set_mouse_visible(False)
else:
cursor = self.MOUSE_CURSORS.get(mouse_cursor)
window.set_mouse_cursor(window.get_system_mouse_cursor(cursor))

def on_mouse_motion(self, x, y, dx, dy):
self.io.mouse_pos = x, self.io.display_size.y - y

Expand Down Expand Up @@ -154,6 +187,10 @@ def __init__(self, window, attach_callbacks=True):
self._map_keys()
if attach_callbacks: self._attach_callbacks(window)

def render(self, draw_data):
super(PygletFixedPipelineRenderer, self).render(draw_data)
self._handle_mouse_cursor()


class PygletProgrammablePipelineRenderer(PygletMixin, ProgrammablePipelineRenderer):
def __init__(self, window, attach_callbacks = True):
Expand All @@ -162,6 +199,10 @@ def __init__(self, window, attach_callbacks = True):
self._map_keys()
if attach_callbacks: self._attach_callbacks(window)

def render(self, draw_data):
super(PygletProgrammablePipelineRenderer, self).render(draw_data)
self._handle_mouse_cursor()


class PygletRenderer(PygletFixedPipelineRenderer):
def __init__(self, window, attach_callbacks=True):
Expand Down