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ui/curses: let user scroll game view windows

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rr-
2019-01-04 16:59:29 +01:00
parent 0133802570
commit e3ffe51979
7 changed files with 64 additions and 9 deletions
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pqcli/ui/curses/widgets/__init__.py
+1
View File
@@ -4,3 +4,4 @@ from .label import Label
from .list_box import ListBox
from .menu import Menu
from .progress_bar import ProgressBar
from .scrollable import Scrollable
pqcli/ui/curses/widgets/scrollable.py
+22 -8
View File
@@ -7,7 +7,7 @@ from .base import WindowWrapper
class Scrollable(WindowWrapper):
def __init__(self, parent: T.Any, h: int, w: int, y: int, x: int) -> None:
super().__init__(parent, h, w, y, x)
self._scroll_y = 0
self._scroll_pos = 0
self._pad: T.Optional[T.Any] = curses.newpad(1, 1)
self._items: T.List[T.Any] = []
@@ -15,13 +15,27 @@ class Scrollable(WindowWrapper):
self._items = []
self.scroll_to_item(0)
def scroll_page_up(self) -> None:
self.scroll_to_item(max(0, self._scroll_pos - self.getmaxyx()[0]))
def scroll_page_down(self) -> None:
self.scroll_to_item(
min(
len(self._items) - 1,
self._scroll_pos + self.getmaxyx()[0] * 2 - 1,
)
)
def scroll_to_item(self, y: int) -> None:
if not self._items or not self._win:
return
if y < 0:
y %= len(self._items)
while not (self._scroll_y <= y < self._scroll_y + self.getmaxyx()[0]):
self._scroll_y += 1 if self._scroll_y < y else -1
h = self.getmaxyx()[0]
delta = 1 if self._scroll_pos < y else -1
while not self._scroll_pos <= y < self._scroll_pos + h:
self._scroll_pos += delta
def stop(self) -> None:
super().stop()
@@ -50,9 +64,9 @@ class Scrollable(WindowWrapper):
y, x = self.getbegyx()
try:
if self._scroll_y > 0 or self._scroll_y + h < len(self._items):
y1 = self._scroll_y
y2 = self._scroll_y + h
if self._scroll_pos > 0 or self._scroll_pos + h < len(self._items):
y1 = self._scroll_pos
y2 = self._scroll_pos + h
thumb_y1 = int(y1 * h // len(self._items))
thumb_y2 = int(y2 * h // len(self._items))
for win_y in range(h):
@@ -67,12 +81,12 @@ class Scrollable(WindowWrapper):
self._render_impl(h, w - 1)
self._pad.noutrefresh(
self._scroll_y, 0, y, x, y + h - 1, x + w - 2
self._scroll_pos, 0, y, x, y + h - 1, x + w - 2
)
else:
self._render_impl(h, w)
self._pad.noutrefresh(
self._scroll_y, 0, y, x, y + h - 1, x + w - 1
self._scroll_pos, 0, y, x, y + h - 1, x + w - 1
)
except curses.error: