openpilot is an open source driver assistance system. openpilot performs the functions of Automated Lane Centering and Adaptive Cruise Control for over 200 supported car makes and models.
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import dearpygui.dearpygui as dpg
from openpilot.tools.jotpluggler.data import DataManager
from openpilot.tools.jotpluggler.views import TimeSeriesPanel
GRIP_SIZE = 4
MIN_PANE_SIZE = 60
class PlotLayoutManager:
def __init__(self, data_manager: DataManager, playback_manager, scale: float = 1.0):
self.data_manager = data_manager
self.playback_manager = playback_manager
self.scale = scale
self.container_tag = "plot_layout_container"
self.active_panels: list = []
initial_panel = TimeSeriesPanel(data_manager, playback_manager)
self.layout: dict = {"type": "panel", "panel": initial_panel}
def create_ui(self, parent_tag: str):
if dpg.does_item_exist(self.container_tag):
dpg.delete_item(self.container_tag)
with dpg.child_window(tag=self.container_tag, parent=parent_tag, border=False, width=-1, height=-1, no_scrollbar=True):
container_width, container_height = dpg.get_item_rect_size(self.container_tag)
self._create_ui_recursive(self.layout, self.container_tag, [], container_width, container_height)
def _create_ui_recursive(self, layout: dict, parent_tag: str, path: list[int], width: int, height: int):
if layout["type"] == "panel":
self._create_panel_ui(layout, parent_tag, path)
else:
self._create_split_ui(layout, parent_tag, path, width, height)
def _create_panel_ui(self, layout: dict, parent_tag: str, path: list[int]):
panel_tag = self._path_to_tag(path, "panel")
panel = layout["panel"]
self.active_panels.append(panel)
with dpg.child_window(tag=panel_tag, parent=parent_tag, border=True, width=-1, height=-1, no_scrollbar=True):
with dpg.group(horizontal=True):
dpg.add_input_text(default_value=panel.title, width=int(100 * self.scale), callback=lambda s, v: setattr(panel, "title", v))
dpg.add_combo(items=["Time Series"], default_value="Time Series", width=int(100 * self.scale))
dpg.add_button(label="Clear", callback=lambda: self.clear_panel(panel), width=int(40 * self.scale))
dpg.add_button(label="Delete", callback=lambda: self.delete_panel(path), width=int(40 * self.scale))
dpg.add_button(label="Split H", callback=lambda: self.split_panel(path, 0), width=int(40 * self.scale))
dpg.add_button(label="Split V", callback=lambda: self.split_panel(path, 1), width=int(40 * self.scale))
dpg.add_separator()
content_tag = self._path_to_tag(path, "content")
with dpg.child_window(tag=content_tag, border=False, height=-1, width=-1, no_scrollbar=True):
panel.create_ui(content_tag)
def _create_split_ui(self, layout: dict, parent_tag: str, path: list[int], width: int, height: int):
split_tag = self._path_to_tag(path, "split")
orientation = layout["orientation"]
min_pane_size = int(MIN_PANE_SIZE * self.scale)
grip_size = int(GRIP_SIZE * self.scale)
num_grips = len(layout["children"]) - 1
with dpg.group(tag=split_tag, parent=parent_tag, horizontal=orientation == 0):
for i, (child_layout, proportion) in enumerate(zip(layout["children"], layout["proportions"], strict=True)):
child_path = path + [i]
container_tag = self._path_to_tag(child_path, "container")
size = [width, height] # pass through since get_item_rect_size is unavailable until rendered
fill_size = [-1, -1] # fill up to the border upon resize
calculated_size = max(min_pane_size, int((size[orientation] - (num_grips * grip_size)) * proportion))
size[orientation] = fill_size[orientation] = calculated_size
with dpg.child_window(tag=container_tag, width=fill_size[0], height=fill_size[1], border=False, no_scrollbar=True):
self._create_ui_recursive(child_layout, container_tag, child_path, size[0], size[1])
if i < len(layout["children"]) - 1: # Add grip between panes (except after the last pane)
self._create_grip(split_tag, path, i, orientation)
def clear_panel(self, panel):
panel.clear()
def delete_panel(self, panel_path: list[int]):
if not panel_path: # Root deletion
old_panel = self.layout["panel"]
old_panel.destroy_ui()
self.active_panels.remove(old_panel)
new_panel = TimeSeriesPanel(self.data_manager, self.playback_manager)
self.layout = {"type": "panel", "panel": new_panel}
self._rebuild_ui_at_path([])
return
parent, child_index = self._get_parent_and_index(panel_path)
layout_to_delete = parent["children"][child_index]
self._cleanup_ui_recursive(layout_to_delete, panel_path)
parent["children"].pop(child_index)
parent["proportions"].pop(child_index)
if len(parent["children"]) == 1: # remove parent and collapse
remaining_child = parent["children"][0]
if len(panel_path) == 1: # parent is at root level - promote remaining child to root
self.layout = remaining_child
self._rebuild_ui_at_path([])
else: # replace parent with remaining child in grandparent
grandparent_path = panel_path[:-2]
parent_index = panel_path[-2]
self._replace_layout_at_path(grandparent_path + [parent_index], remaining_child)
self._rebuild_ui_at_path(grandparent_path + [parent_index])
else: # redistribute proportions
equal_prop = 1.0 / len(parent["children"])
parent["proportions"] = [equal_prop] * len(parent["children"])
self._rebuild_ui_at_path(panel_path[:-1])
def split_panel(self, panel_path: list[int], orientation: int):
current_layout = self._get_layout_at_path(panel_path)
existing_panel = current_layout["panel"]
new_panel = TimeSeriesPanel(self.data_manager, self.playback_manager)
parent, child_index = self._get_parent_and_index(panel_path)
if parent is None: # Root split
self.layout = {
"type": "split",
"orientation": orientation,
"children": [{"type": "panel", "panel": existing_panel}, {"type": "panel", "panel": new_panel}],
"proportions": [0.5, 0.5],
}
self._rebuild_ui_at_path([])
elif parent["type"] == "split" and parent["orientation"] == orientation: # Same orientation - insert into existing split
parent["children"].insert(child_index + 1, {"type": "panel", "panel": new_panel})
parent["proportions"] = [1.0 / len(parent["children"])] * len(parent["children"])
self._rebuild_ui_at_path(panel_path[:-1])
else: # Different orientation - create new split level
new_split = {"type": "split", "orientation": orientation, "children": [current_layout, {"type": "panel", "panel": new_panel}], "proportions": [0.5, 0.5]}
self._replace_layout_at_path(panel_path, new_split)
self._rebuild_ui_at_path(panel_path)
def _rebuild_ui_at_path(self, path: list[int]):
layout = self._get_layout_at_path(path)
if path:
container_tag = self._path_to_tag(path, "container")
else: # Root update
container_tag = self.container_tag
self._cleanup_ui_recursive(layout, path)
dpg.delete_item(container_tag, children_only=True)
width, height = dpg.get_item_rect_size(container_tag)
self._create_ui_recursive(layout, container_tag, path, width, height)
def _cleanup_ui_recursive(self, layout: dict, path: list[int]):
if layout["type"] == "panel":
panel = layout["panel"]
panel.destroy_ui()
if panel in self.active_panels:
self.active_panels.remove(panel)
else:
for i in range(len(layout["children"]) - 1):
handler_tag = f"{self._path_to_tag(path, f'grip_{i}')}_handler"
if dpg.does_item_exist(handler_tag):
dpg.delete_item(handler_tag)
for i, child in enumerate(layout["children"]):
self._cleanup_ui_recursive(child, path + [i])
def update_all_panels(self):
for panel in self.active_panels:
panel.update()
def on_viewport_resize(self):
self._resize_splits_recursive(self.layout, [])
def _resize_splits_recursive(self, layout: dict, path: list[int]):
if layout["type"] == "split":
split_tag = self._path_to_tag(path, "split")
if dpg.does_item_exist(split_tag):
parent_tag = dpg.get_item_parent(split_tag)
grip_size = int(GRIP_SIZE * self.scale)
min_pane_size = int(MIN_PANE_SIZE * self.scale)
num_grips = len(layout["children"]) - 1
orientation = layout["orientation"]
available_sizes = dpg.get_item_rect_size(parent_tag)
size_properties = ("width", "height")
for i, proportion in enumerate(layout["proportions"]):
child_path = path + [i]
container_tag = self._path_to_tag(child_path, "container")
if dpg.does_item_exist(container_tag):
new_size = max(min_pane_size, int((available_sizes[orientation] - (num_grips * grip_size)) * proportion))
dpg.configure_item(container_tag, **{size_properties[orientation]: new_size})
self._resize_splits_recursive(layout["children"][i], child_path)
def _get_layout_at_path(self, path: list[int]) -> dict:
current = self.layout
for index in path:
current = current["children"][index]
return current
def _get_parent_and_index(self, path: list[int]) -> tuple:
return (None, -1) if not path else (self._get_layout_at_path(path[:-1]), path[-1])
def _replace_layout_at_path(self, path: list[int], new_layout: dict):
if not path:
self.layout = new_layout
else:
parent, index = self._get_parent_and_index(path)
parent["children"][index] = new_layout
def _path_to_tag(self, path: list[int], prefix: str = "") -> str:
path_str = "_".join(map(str, path)) if path else "root"
return f"{prefix}_{path_str}" if prefix else path_str
def _create_grip(self, parent_tag: str, path: list[int], grip_index: int, orientation: int):
grip_tag = self._path_to_tag(path, f"grip_{grip_index}")
grip_size = int(GRIP_SIZE * self.scale)
width = grip_size if orientation == 0 else -1
height = grip_size if orientation == 1 else -1
with dpg.child_window(tag=grip_tag, parent=parent_tag, width=width, height=height, no_scrollbar=True, border=False):
button_tag = dpg.add_button(label="", width=-1, height=-1)
with dpg.item_handler_registry(tag=f"{grip_tag}_handler"):
user_data = (path, grip_index, orientation)
dpg.add_item_active_handler(callback=self._on_grip_drag, user_data=user_data)
dpg.add_item_deactivated_handler(callback=self._on_grip_end, user_data=user_data)
dpg.bind_item_handler_registry(button_tag, f"{grip_tag}_handler")
def _on_grip_drag(self, sender, app_data, user_data):
path, grip_index, orientation = user_data
layout = self._get_layout_at_path(path)
if "_drag_data" not in layout:
layout["_drag_data"] = {"initial_proportions": layout["proportions"][:], "start_mouse": dpg.get_mouse_pos(local=False)[orientation]}
return
drag_data = layout["_drag_data"]
current_coord = dpg.get_mouse_pos(local=False)[orientation]
delta = current_coord - drag_data["start_mouse"]
split_tag = self._path_to_tag(path, "split")
if not dpg.does_item_exist(split_tag):
return
total_size = dpg.get_item_rect_size(split_tag)[orientation]
num_grips = len(layout["children"]) - 1
usable_size = max(100, total_size - (num_grips * int(GRIP_SIZE * self.scale)))
delta_prop = delta / usable_size
left_idx = grip_index
right_idx = left_idx + 1
initial = drag_data["initial_proportions"]
min_prop = int(MIN_PANE_SIZE * self.scale) / usable_size
new_left = max(min_prop, initial[left_idx] + delta_prop)
new_right = max(min_prop, initial[right_idx] - delta_prop)
total_available = initial[left_idx] + initial[right_idx]
if new_left + new_right > total_available:
if new_left > new_right:
new_left = total_available - new_right
else:
new_right = total_available - new_left
layout["proportions"] = initial[:]
layout["proportions"][left_idx] = new_left
layout["proportions"][right_idx] = new_right
self._resize_splits_recursive(layout, path)
def _on_grip_end(self, sender, app_data, user_data):
path, _, _ = user_data
self._get_layout_at_path(path).pop("_drag_data", None)