pikers
/
piker
3
0
Fork 0
Code Issues 5 Pull Requests 7 Packages Projects Releases Wiki Activity

First working attempt of search results view scaling 

Scales the "view" instance that holds search results to the size of the
accompanying "slow chart" for which the search pane is a "sidepane".
A lot of mucking about was required due to resizing of the view
seemingly feeding back into window resizing and further implementing the
sizing logic such that the parent `QSplitter` can be resized as the
user's whim as well.

Details,
- add a `CompleterView._init: bool` which is set once (and only once)
  after startup where the first display of the current symbol/feed is
  shown allowing and a single *width* padding applied once at startup
  to ensure we don't have an awkward line to the right of the longest
  result.
- in `.resize_to_results()` only apply a minimum height to the view
  using `.setMinimumHeight()` with a down-scaled (`0.91` for now) height
  value from input.
- re-implement `CompleterView.show_matches()` to accept and optional
  width, heigh tuple and when not supplied pull the slow chart's
  dimensions and pass as input to the resize method.
- Make `SearchWidget` x dim sizing policy "fixed".
- register the `SearchWidget` for resize events with god.
- add `.show_only_cache_entries()` for easy results clearing.
- add `.space_dims()` to retrieve slow linked-charts dimensions.
- implement `SearchWidget.on_resize()` which is the caller of all the
  previously mentioned resizing routines.
- do resizing and cache entry showing on search loop startup and be sure
  to clear to cache when the user selects a symbol-feed with Enter.
history_view
Tyler Goodlet 2022-09-09 21:46:57 -04:00
parent 1e81feee46
commit d11dc787a1
1 changed files with 145 additions and 88 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

223
piker/ui/_search.py
View File

@ -138,6 +138,7 @@ class CompleterView(QTreeView):
model.setHorizontalHeaderLabels(labels)
self._font_size: int = 0 # pixels
self._init: bool = False
async def on_pressed(self, idx: QModelIndex) -> None:
'''
@ -145,7 +146,7 @@ class CompleterView(QTreeView):
'''
search = self.parent()
await search.chart_current_item(clear_to_cache=False)
await search.chart_current_item()
search.focus()
def set_font_size(self, size: int = 18):
@ -157,56 +158,58 @@ class CompleterView(QTreeView):
self.setStyleSheet(f"font: {size}px")
# def resizeEvent(self, event: 'QEvent') -> None:
# event.accept()
# super().resizeEvent(event)
def resize_to_results(
self,
w: Optional[float] = 0,
h: Optional[float] = None,
def on_resize(self) -> None:
'''
Resize relay event from god.
'''
self.resize_to_results()
def resize_to_results(self):
) -> None:
model = self.model()
cols = model.columnCount()
# rows = model.rowCount()
cidx = self.selectionModel().currentIndex()
row_h = self.rowHeight(cidx)
# print(f'row_h: {row_h}')
col_w_tot = 0
for i in range(cols):
# only slap in a rows's height's worth
# of padding once at startup.. no idea
if (
not self._init
and row_h
):
col_w_tot = row_h
self._init = True
self.resizeColumnToContents(i)
col_w_tot += self.columnWidth(i)
win = self.window()
win_h = win.height()
edit_h = self.parent().bar.height()
sb_h = win.statusBar().height()
# TODO: probably make this more general / less hacky we should
# figure out the exact number of rows to allow inclusive of
# search bar and header "rows", in pixel terms. Eventually when
# we have an "info" widget below the results we will want space
# for it and likely terminating the results-view space **exactly
# on a row** would be ideal.
# TODO: probably make this more general / less hacky
# we should figure out the exact number of rows to allow
# inclusive of search bar and header "rows", in pixel terms.
# Eventually when we have an "info" widget below the results we
# will want space for it and likely terminating the results-view
# space **exactly on a row** would be ideal.
# if row_px > 0:
# rows = ceil(window_h / row_px) - 4
# else:
# rows = 16
# self.setFixedHeight(rows * row_px)
# self.resize(self.width(), rows * row_px)
if h:
h: int = round(h)
# mn = row_h * 2
# self.setMinimumHeight(mn)
# abs_mx = h - row_h
# print(f'set min {abs_mx}')
# self.setFixedHeight(round(0.9 * h))
self.setMinimumHeight(round(0.91 * h))
# NOTE: if the heigh set here is **too large** then the resize
# event will perpetually trigger as the window causes some kind
# of recompute of callbacks.. so we have to ensure it's limited.
h = win_h - (edit_h + 1.666*sb_h)
assert h > 0
self.setFixedHeight(round(h))
# self.setMaximumHeight(0.9 * abs_mx)
# 6 result row slots and 3 rows for sections and headers
# mn = (6 + 3) * row_h
# size to width of longest result seen thus far
# TODO: should we always dynamically scale to longest result?
if self.width() < col_w_tot:
self.setFixedWidth(col_w_tot)
# dyncamically size to width of longest result seen
curr_w = self.width()
if curr_w < col_w_tot:
self.setMinimumWidth(col_w_tot)
self.update()
@ -376,8 +379,6 @@ class CompleterView(QTreeView):
else:
model.setItem(idx.row(), 1, QStandardItem())
self.resize_to_results()
return idx
else:
return None
@ -445,9 +446,22 @@ class CompleterView(QTreeView):
self.show_matches()
def show_matches(self) -> None:
def show_matches(
self,
wh: Optional[tuple[float, float]] = None,
) -> None:
if wh:
self.resize_to_results(*wh)
else:
# case where it's just an update from results and *NOT*
# a resize of some higher level parent-container widget.
search = self.parent()
w, h = search.space_dims()
self.resize_to_results(w=w)
self.show()
self.resize_to_results()
class SearchBar(Edit):
@ -467,18 +481,15 @@ class SearchBar(Edit):
self.godwidget = godwidget
super().__init__(parent, **kwargs)
self.view: CompleterView = view
godwidget._widgets[view.mode_name] = view
def show(self) -> None:
super().show()
self.view.show_matches()
def unfocus(self) -> None:
self.parent().hide()
self.clearFocus()
def hide(self) -> None:
if self.view:
self.view.hide()
super().hide()
class SearchWidget(QtWidgets.QWidget):
@ -497,15 +508,19 @@ class SearchWidget(QtWidgets.QWidget):
parent=None,
) -> None:
super().__init__(parent or godwidget)
super().__init__(parent)
# size it as we specify
self.setSizePolicy(
# QtWidgets.QSizePolicy.Expanding,
QtWidgets.QSizePolicy.Fixed,
# QtWidgets.QSizePolicy.Expanding,
QtWidgets.QSizePolicy.Fixed,
QtWidgets.QSizePolicy.Expanding,
)
self.godwidget = godwidget
godwidget.reg_for_resize(self)
self._last_h: float = 0
self.vbox = QtWidgets.QVBoxLayout(self)
self.vbox.setContentsMargins(0, 4, 4, 0)
@ -555,26 +570,24 @@ class SearchWidget(QtWidgets.QWidget):
self.vbox.setAlignment(self.view, Qt.AlignTop | Qt.AlignLeft)
def focus(self) -> None:
self.show()
self.bar.focus()
def show_only_cache_entries(self) -> None:
'''
Clear the search results view and show only cached (aka recently
loaded with active data) feeds in the results section.
'''
godw = self.godwidget
if self.view.model().rowCount(QModelIndex()) == 0:
# fill cache list if nothing existing
print('showing cache only')
self.view.set_section_entries(
'cache',
list(reversed(godw._chart_cache)),
# remove all other completion results except for cache
clear_all=True,
)
hist_linked = godw.hist_linked
hist_chart = hist_linked.chart
if hist_chart:
rt_linked = godw.rt_linked
hist_chart.qframe.set_sidepane(self)
hist_linked.resize_sidepanes(from_linked=rt_linked)
self.show()
self.bar.focus()
def get_current_item(self) -> Optional[tuple[str, str]]:
'''Return the current completer tree selection as
a tuple ``(parent: str, child: str)`` if valid, else ``None``.
@ -624,11 +637,11 @@ class SearchWidget(QtWidgets.QWidget):
return None
provider, symbol = value
chart = self.godwidget
godw = self.godwidget
log.info(f'Requesting symbol: {symbol}.{provider}')
await chart.load_symbol(
await godw.load_symbol(
provider,
symbol,
'info',
@ -645,25 +658,60 @@ class SearchWidget(QtWidgets.QWidget):
# Re-order the symbol cache on the chart to display in
# LIFO order. this is normally only done internally by
# the chart on new symbols being loaded into memory
chart.set_chart_symbol(
godw.set_chart_symbol(
fqsn, (
chart.linkedsplits,
self.godwidget.hist_linked,
godw.hist_linked,
godw.rt_linked,
)
)
self.show_only_cache_entries()
self.view.set_section_entries(
'cache',
values=list(reversed(chart._chart_cache)),
# remove all other completion results except for cache
clear_all=True,
)
self.focus()
# self.focus()
self.bar.focus()
return fqsn
def space_dims(self) -> tuple[float, float]:
'''
Compute and return the "available space dimentions" for this
search widget in terms of px space for results by return the
pair of width and height.
'''
# XXX: dun need dis rite?
# win = self.window()
# win_h = win.height()
# sb_h = win.statusBar().height()
godw = self.godwidget
hl = godw.hist_linked
edit_h = self.bar.height()
h = hl.height() - edit_h
w = hl.width()
return w, h
def on_resize(self) -> None:
'''
Resize relay event from god, resize all child widgets.
Right now this is just view to contents and/or the fast chart
height.
'''
# NOTE: if the heigh set here is **too large** then the resize
# event will perpetually trigger as the window causes some kind
# of recompute of callbacks.. so we have to ensure it's limited.
w, h = self.space_dims()
if (
not self._last_h
or self._last_h != h
):
# print(
# f'w: {w}\n'
# f'h: {h}\n'
# f'._last_h: {self._last_h}\n'
# )
self._last_h = h
self.bar.view.show_matches(wh=(w, h))
_search_active: trio.Event = trio.Event()
_search_enabled: bool = False
@ -747,6 +795,10 @@ async def fill_results(
matches = defaultdict(list)
has_results: defaultdict[str, set[str]] = defaultdict(set)
# show cached feed list at startup
search.show_only_cache_entries()
search.on_resize()
while True:
await _search_active.wait()
period = None
@ -859,8 +911,7 @@ async def handle_keyboard_input(
godwidget = search.godwidget
view = bar.view
view.set_font_size(bar.dpi_font.px_size)
send, recv = trio.open_memory_channel(16)
send, recv = trio.open_memory_channel(616)
async with trio.open_nursery() as n:
@ -875,6 +926,10 @@ async def handle_keyboard_input(
)
)
bar.focus()
search.show_only_cache_entries()
await trio.sleep(0)
async for kbmsg in recv_chan:
event, etype, key, mods, txt = kbmsg.to_tuple()
@ -885,10 +940,11 @@ async def handle_keyboard_input(
ctl = True
if key in (Qt.Key_Enter, Qt.Key_Return):
await search.chart_current_item(clear_to_cache=True)
_search_enabled = False
continue
await search.chart_current_item(clear_to_cache=True)
view.show_matches()
search.show_only_cache_entries()
search.focus()
elif not ctl and not bar.text():
# if nothing in search text show the cache
@ -905,7 +961,7 @@ async def handle_keyboard_input(
Qt.Key_Space, # i feel like this is the "native" one
Qt.Key_Alt,
}:
#bar.unfocus()
bar.unfocus()
# kill the search and focus back on main chart
if godwidget:
@ -953,9 +1009,10 @@ async def handle_keyboard_input(
if item:
parent_item = item.parent()
# if we're in the cache section and thus the next
# selection is a cache item, switch and show it
# immediately since it should be very fast.
if parent_item and parent_item.text() == 'cache':
# if it's a cache item, switch and show it immediately
await search.chart_current_item(clear_to_cache=False)
elif not ctl: