mirror of
https://github.com/kovidgoyal/calibre.git
synced 2026-03-03 07:30:01 -05:00
180 lines
7.3 KiB
Plaintext
180 lines
7.3 KiB
Plaintext
# vim:fileencoding=utf-8
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# License: GPL v3 Copyright: 2018, Kovid Goyal <kovid at kovidgoyal.net>
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from __python__ import bound_methods, hash_literals
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def range_from_point(x, y):
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r = None
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if document.caretPositionFromPoint:
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p = document.caretPositionFromPoint(x, y)
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if p:
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r = document.createRange()
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r.setStart(p.offsetNode, p.offset)
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r.collapse(True)
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elif document.caretRangeFromPoint:
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r = document.caretRangeFromPoint(x, y)
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return r
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def word_boundary_regex():
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ans = word_boundary_regex.ans
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if ans is undefined:
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ans = word_boundary_regex.ans = /[\s!-#%-\x2A,-/:;\x3F@\x5B-\x5D_\x7B}\u00A1\u00A7\u00AB\u00B6\u00B7\u00BB\u00BF\u037E\u0387\u055A-\u055F\u0589\u058A\u05BE\u05C0\u05C3\u05C6\u05F3\u05F4\u0609\u060A\u060C\u060D\u061B\u061E\u061F\u066A-\u066D\u06D4\u0700-\u070D\u07F7-\u07F9\u0830-\u083E\u085E\u0964\u0965\u0970\u0AF0\u0DF4\u0E4F\u0E5A\u0E5B\u0F04-\u0F12\u0F14\u0F3A-\u0F3D\u0F85\u0FD0-\u0FD4\u0FD9\u0FDA\u104A-\u104F\u10FB\u1360-\u1368\u1400\u166D\u166E\u169B\u169C\u16EB-\u16ED\u1735\u1736\u17D4-\u17D6\u17D8-\u17DA\u1800-\u180A\u1944\u1945\u1A1E\u1A1F\u1AA0-\u1AA6\u1AA8-\u1AAD\u1B5A-\u1B60\u1BFC-\u1BFF\u1C3B-\u1C3F\u1C7E\u1C7F\u1CC0-\u1CC7\u1CD3\u2010-\u2027\u2030-\u2043\u2045-\u2051\u2053-\u205E\u207D\u207E\u208D\u208E\u2329\u232A\u2768-\u2775\u27C5\u27C6\u27E6-\u27EF\u2983-\u2998\u29D8-\u29DB\u29FC\u29FD\u2CF9-\u2CFC\u2CFE\u2CFF\u2D70\u2E00-\u2E2E\u2E30-\u2E3B\u3001-\u3003\u3008-\u3011\u3014-\u301F\u3030\u303D\u30A0\u30FB\uA4FE\uA4FF\uA60D-\uA60F\uA673\uA67E\uA6F2-\uA6F7\uA874-\uA877\uA8CE\uA8CF\uA8F8-\uA8FA\uA92E\uA92F\uA95F\uA9C1-\uA9CD\uA9DE\uA9DF\uAA5C-\uAA5F\uAADE\uAADF\uAAF0\uAAF1\uABEB\uFD3E\uFD3F\uFE10-\uFE19\uFE30-\uFE52\uFE54-\uFE61\uFE63\uFE68\uFE6A\uFE6B\uFF01-\uFF03\uFF05-\uFF0A\uFF0C-\uFF0F\uFF1A\uFF1B\uFF1F\uFF20\uFF3B-\uFF3D\uFF3F\uFF5B\uFF5D\uFF5F-\uFF65]/
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return ans
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def expand_offset_to_word(string, offset):
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start = offset
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pat = word_boundary_regex()
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while start >= 1 and not pat.test(string.charAt(start - 1)):
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start -= 1
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end, sz = offset, string.length
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while end < sz and not pat.test(string.charAt(end)):
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end += 1
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return {'word': string[start:end], 'start': start, 'end': end}
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def word_at_point(x, y):
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r = range_from_point(x, y)
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if r and r.startContainer.nodeType is 3:
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word_info = expand_offset_to_word(r.startContainer.data, r.startOffset)
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if word_info.word:
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r.setStart(r.startContainer, word_info.start)
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r.setEnd(r.startContainer, word_info.end)
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return r
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def empty_range_extents():
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return {
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'start': {'x': 0, 'y': 0, 'height': 0, 'onscreen': False, 'is_empty': True},
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'end': {'x': 0, 'y': 0, 'height': 0, 'onscreen': False, 'is_empty': True}
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}
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def range_extents(start, end, in_flow_mode):
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ans = empty_range_extents()
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if not start or not end:
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return ans
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start = start.cloneRange()
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end = end.cloneRange()
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start.collapse(True)
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end.collapse(False)
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def for_boundary(r, ans):
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rect = r.getBoundingClientRect()
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if rect.height is 0:
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# this tends to happen when moving the mouse downwards
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# at the boundary between paragraphs
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if r.startContainer?.nodeType is Node.ELEMENT_NODE:
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node = r.startContainer
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if r.startOffset and node.childNodes.length > r.startOffset:
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node = node.childNodes[r.startOffset]
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# we cant use getBoundingClientRect as the node might be split
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# among multiple columns
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if node.getClientRects:
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rects = node.getClientRects()
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if rects.length:
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erect = rects[0]
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rect = {'left': erect.left, 'top': erect.top, 'right': erect.left + 2, 'bottom': erect.top + 2, 'width': 2, 'height': 2}
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ans.x = Math.round(rect.left)
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ans.y = Math.round(rect.top)
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ans.height = rect.height
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if rect.right <= window.innerWidth and rect.bottom <= window.innerHeight and rect.left >= 0 and rect.top >= 0:
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ans.onscreen = True
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for_boundary(start, ans.start)
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for_boundary(end, ans.end)
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ans.start.is_empty = ans.start.height > 0
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ans.end.is_empty = ans.end.height > 0
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return ans
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def selection_extents(in_flow_mode, end_must_be_focus):
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sel = window.getSelection()
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if not sel or not sel.rangeCount or sel.isCollapsed:
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return empty_range_extents()
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if end_must_be_focus:
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start = document.createRange()
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start.setStart(sel.anchorNode, sel.anchorOffset)
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start.setEnd(sel.anchorNode, sel.anchorOffset)
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end = document.createRange()
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end.setStart(sel.focusNode, sel.focusOffset)
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end.setEnd(sel.focusNode, sel.focusOffset)
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else:
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start = sel.getRangeAt(0)
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end = sel.getRangeAt(sel.rangeCount - 1)
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return range_extents(start, end, in_flow_mode)
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def selection_extents_at_point(x, y, in_flow_mode):
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r = word_at_point(x, y)
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if r:
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sel = window.getSelection()
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sel.removeAllRanges()
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sel.addRange(r)
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return selection_extents(r, r)
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ans = empty_range_extents()
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ans.start.y = ans.end.y = y
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ans.start.height = ans.end.height = parseInt(window.getComputedStyle(document.body).fontSize) + 4
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ans.start.x = x
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ans.end.x = x + ans.start.height * 3
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ans.start.onscreen = ans.end.onscreen = True
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ans.start.is_empty = ans.end.is_empty = False
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return ans
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def range_at_limit(invert_x, invert_y):
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step = 10
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for y in range(0, window.innerHeight + step, step):
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if invert_y:
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y = max(0, window.innerHeight - y)
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for x in range(0, window.innerWidth + step, step):
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if invert_x:
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x = max(0, window.innerWidth - x)
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r = range_from_point(x, y)
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if r:
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return r
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def extend_selection_to_limit(left, top):
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sel = window.getSelection()
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if not sel or not sel.rangeCount or sel.isCollapsed:
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return False
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new_limit = range_at_limit(not left, not top)
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if not new_limit:
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return False
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r = sel.getRangeAt(0)
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if left:
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r.setStart(new_limit.startContainer, new_limit.startOffset)
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else:
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r.setEnd(new_limit.startContainer, new_limit.startOffset)
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return True
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def set_selections_extents_to(extents):
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if extents.start.onscreen and extents.end.onscreen:
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start = range_from_point(extents.start.x, extents.start.y)
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if start:
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end = range_from_point(extents.end.x, extents.end.y)
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if end:
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r = document.createRange()
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r.setStart(start.startContainer, start.startOffset)
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r.setEnd(end.startContainer, end.startOffset)
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sel = window.getSelection()
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sel.removeAllRanges()
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sel.addRange(r)
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return
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sel = window.getSelection()
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if not sel.rangeCount:
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return
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r = sel.getRangeAt(0)
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if extents.start.onscreen:
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start = range_from_point(extents.start.x, extents.start.y)
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if start:
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r.setStart(start.startContainer, start.startOffset)
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if extents.end.onscreen:
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end = range_from_point(extents.end.x, extents.end.y)
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if end:
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r.setEnd(end.startContainer, end.startOffset)
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