103 lines
3.9 KiB
Python
103 lines
3.9 KiB
Python
# Copyright (c) 2021, NVIDIA CORPORATION & AFFILIATES. All rights reserved.
|
|
#
|
|
# NVIDIA CORPORATION and its licensors retain all intellectual property
|
|
# and proprietary rights in and to this software, related documentation
|
|
# and any modifications thereto. Any use, reproduction, disclosure or
|
|
# distribution of this software and related documentation without an express
|
|
# license agreement from NVIDIA CORPORATION is strictly prohibited.
|
|
|
|
import os
|
|
import imgui
|
|
import imgui.integrations.glfw
|
|
|
|
from . import glfw_window
|
|
from . import imgui_utils
|
|
from . import text_utils
|
|
|
|
#----------------------------------------------------------------------------
|
|
|
|
class ImguiWindow(glfw_window.GlfwWindow):
|
|
def __init__(self, *, title='ImguiWindow', font=None, font_sizes=range(14,24), **glfw_kwargs):
|
|
if font is None:
|
|
font = text_utils.get_default_font()
|
|
font_sizes = {int(size) for size in font_sizes}
|
|
super().__init__(title=title, **glfw_kwargs)
|
|
|
|
# Init fields.
|
|
self._imgui_context = None
|
|
self._imgui_renderer = None
|
|
self._imgui_fonts = None
|
|
self._cur_font_size = max(font_sizes)
|
|
|
|
# Delete leftover imgui.ini to avoid unexpected behavior.
|
|
if os.path.isfile('imgui.ini'):
|
|
os.remove('imgui.ini')
|
|
|
|
# Init ImGui.
|
|
self._imgui_context = imgui.create_context()
|
|
self._imgui_renderer = _GlfwRenderer(self._glfw_window)
|
|
self._attach_glfw_callbacks()
|
|
imgui.get_io().ini_saving_rate = 0 # Disable creating imgui.ini at runtime.
|
|
imgui.get_io().mouse_drag_threshold = 0 # Improve behavior with imgui_utils.drag_custom().
|
|
self._imgui_fonts = {size: imgui.get_io().fonts.add_font_from_file_ttf(font, size) for size in font_sizes}
|
|
self._imgui_renderer.refresh_font_texture()
|
|
|
|
def close(self):
|
|
self.make_context_current()
|
|
self._imgui_fonts = None
|
|
if self._imgui_renderer is not None:
|
|
self._imgui_renderer.shutdown()
|
|
self._imgui_renderer = None
|
|
if self._imgui_context is not None:
|
|
#imgui.destroy_context(self._imgui_context) # Commented out to avoid creating imgui.ini at the end.
|
|
self._imgui_context = None
|
|
super().close()
|
|
|
|
def _glfw_key_callback(self, *args):
|
|
super()._glfw_key_callback(*args)
|
|
self._imgui_renderer.keyboard_callback(*args)
|
|
|
|
@property
|
|
def font_size(self):
|
|
return self._cur_font_size
|
|
|
|
@property
|
|
def spacing(self):
|
|
return round(self._cur_font_size * 0.4)
|
|
|
|
def set_font_size(self, target): # Applied on next frame.
|
|
self._cur_font_size = min((abs(key - target), key) for key in self._imgui_fonts.keys())[1]
|
|
|
|
def begin_frame(self):
|
|
# Begin glfw frame.
|
|
super().begin_frame()
|
|
|
|
# Process imgui events.
|
|
self._imgui_renderer.mouse_wheel_multiplier = self._cur_font_size / 10
|
|
if self.content_width > 0 and self.content_height > 0:
|
|
self._imgui_renderer.process_inputs()
|
|
|
|
# Begin imgui frame.
|
|
imgui.new_frame()
|
|
imgui.push_font(self._imgui_fonts[self._cur_font_size])
|
|
imgui_utils.set_default_style(spacing=self.spacing, indent=self.font_size, scrollbar=self.font_size+4)
|
|
|
|
def end_frame(self):
|
|
imgui.pop_font()
|
|
imgui.render()
|
|
imgui.end_frame()
|
|
self._imgui_renderer.render(imgui.get_draw_data())
|
|
super().end_frame()
|
|
|
|
#----------------------------------------------------------------------------
|
|
# Wrapper class for GlfwRenderer to fix a mouse wheel bug on Linux.
|
|
|
|
class _GlfwRenderer(imgui.integrations.glfw.GlfwRenderer):
|
|
def __init__(self, *args, **kwargs):
|
|
super().__init__(*args, **kwargs)
|
|
self.mouse_wheel_multiplier = 1
|
|
|
|
def scroll_callback(self, window, x_offset, y_offset):
|
|
self.io.mouse_wheel += y_offset * self.mouse_wheel_multiplier
|
|
|
|
#----------------------------------------------------------------------------
|