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Viewer: When the search results panel is expanded, show more context

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Kovid Goyal 2020-05-21 21:13:00 +05:30
parent b0e427621a
commit d4b5fbeb28
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GPG Key ID: 06BC317B515ACE7C
1 changed files with 69 additions and 36 deletions
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97
src/calibre/gui2/viewer/search.py
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@ -5,12 +5,13 @@
from __future__ import absolute_import, division, print_function, unicode_literals
import json
import re
from collections import Counter, OrderedDict
from threading import Thread
import regex
from PyQt5.Qt import (
QAction, QCheckBox, QComboBox, QFont, QHBoxLayout, QIcon, QLabel, QStaticText,
QAction, QCheckBox, QComboBox, QFont, QFontMetrics, QHBoxLayout, QIcon, QLabel,
QStyle, QStyledItemDelegate, Qt, QToolButton, QTreeWidget, QTreeWidgetItem,
QVBoxLayout, QWidget, pyqtSignal
)
@ -127,8 +128,7 @@ class SearchResult(object):
__slots__ = (
'search_query', 'before', 'text', 'after', 'q', 'spine_idx',
'index', 'file_name', '_static_text', 'is_hidden', 'offset',
'toc_nodes'
'index', 'file_name', 'is_hidden', 'offset', 'toc_nodes'
)
def __init__(self, search_query, before, text, after, q, name, spine_idx, index, offset):
@ -137,7 +137,6 @@ class SearchResult(object):
self.before, self.text, self.after = before, text, after
self.spine_idx, self.index = spine_idx, index
self.file_name = name
self._static_text = None
self.is_hidden = False
self.offset = offset
try:
@ -147,24 +146,6 @@ class SearchResult(object):
traceback.print_exc()
self.toc_nodes = ()
@property
def static_text(self):
if self._static_text is None:
before_words = self.before.split()
before = ' '.join(before_words[-3:])
before_extra = len(before) - 15
if before_extra > 0:
before = before[before_extra:]
before = '…' + before
before_space = '' if self.before.rstrip() == self.before else ' '
after_words = self.after.split()
after = ' '.join(after_words[:3])[:15] + '…'
after_space = '' if self.after.lstrip() == self.after else ' '
self._static_text = st = QStaticText('<p>{}{}<b>{}</b>{}{}'.format(before, before_space, self.text, after_space, after))
st.setTextFormat(Qt.RichText)
st.setTextWidth(10000)
return self._static_text
@property
def for_js(self):
return {
@ -464,24 +445,76 @@ class ResultsDelegate(QStyledItemDelegate): # {{{
if not isinstance(result, SearchResult):
return
painter.save()
try:
p = option.palette
c = p.HighlightedText if option.state & QStyle.State_Selected else p.Text
group = (p.Active if option.state & QStyle.State_Active else p.Inactive)
c = p.color(group, c)
painter.setClipRect(option.rect)
painter.setPen(c)
height = result.static_text.size().height()
tl = option.rect.topLeft()
x, y = tl.x(), tl.y()
y += (option.rect.height() - height) // 2
if result.is_hidden:
x += option.decorationSize.width() + 4
try:
painter.drawStaticText(x, y, result.static_text)
font = option.font
emphasis_font = QFont(font)
emphasis_font.setBold(True)
flags = Qt.AlignTop | Qt.TextSingleLine | Qt.TextIncludeTrailingSpaces
rect = option.rect.adjusted(option.decorationSize.width() + 4 if result.is_hidden else 0, 0, 0, 0)
painter.setClipRect(rect)
before = re.sub(r'\s+', ' ', result.before)
before_width = 0
if before:
before_width = painter.boundingRect(rect, flags, before).width()
after = re.sub(r'\s+', ' ', result.after.rstrip())
after_width = 0
if after:
after_width = painter.boundingRect(rect, flags, after).width()
ellipsis_width = painter.boundingRect(rect, flags, '...').width()
painter.setFont(emphasis_font)
text = re.sub(r'\s+', ' ', result.text)
match_width = painter.boundingRect(rect, flags, text).width()
if match_width >= rect.width() - 3 * ellipsis_width:
efm = QFontMetrics(emphasis_font)
text = efm.elidedText(text, Qt.ElideRight, rect.width())
painter.drawText(rect, flags, text)
else:
self.draw_match(
painter, flags, before, text, after, rect, before_width, match_width, after_width, ellipsis_width, emphasis_font, font)
except Exception:
import traceback
traceback.print_exc()
painter.restore()
def draw_match(self, painter, flags, before, text, after, rect, before_width, match_width, after_width, ellipsis_width, emphasis_font, normal_font):
extra_width = int(rect.width() - match_width)
if before_width < after_width:
left_width = min(extra_width // 2, before_width)
right_width = extra_width - left_width
else:
right_width = min(extra_width // 2, after_width)
left_width = min(before_width, extra_width - right_width)
x = rect.left()
nfm = QFontMetrics(normal_font)
if before_width and left_width:
r = rect.adjusted(0, 0, 0, 0)
r.setRight(x + left_width)
painter.setFont(normal_font)
ebefore = nfm.elidedText(before, Qt.ElideLeft, left_width)
if ebefore == before:
ebefore = '…' + before[1:]
r.setLeft(x)
x += painter.drawText(r, flags, ebefore).width()
painter.setFont(emphasis_font)
r = rect.adjusted(0, 0, 0, 0)
r.setLeft(x)
painter.drawText(r, flags, text).width()
x += match_width
if after_width and right_width:
painter.setFont(normal_font)
r = rect.adjusted(0, 0, 0, 0)
r.setLeft(x)
eafter = nfm.elidedText(after, Qt.ElideRight, right_width)
if eafter == after:
eafter = after[:-1] + '…'
painter.setFont(normal_font)
painter.drawText(r, flags, eafter)
# }}}
@ -571,7 +604,7 @@ class Results(QTreeWidget): # {{{
r = item.data(0, Qt.UserRole)
if r.is_result(sr):
r.is_hidden = True
item.setIcon(self.not_found_icon)
item.setIcon(0, self.not_found_icon)
break
@property