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Soft Line Wrapping (#636) 

Added in soft line wrapping.
This commit is contained in:
Adam 2022-03-24 12:01:46 -04:00 committed by GitHub
parent a0194ac26b
commit a8b97dffab
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GPG Key ID: 4AEE18F83AFDEB23
4 changed files with 581 additions and 52 deletions
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42
data/core/commands/doc.lua
View File

@ -549,29 +549,29 @@ local commands = {
local translations = {
["previous-char"] = translate.previous_char,
["next-char"] = translate.next_char,
["previous-word-start"] = translate.previous_word_start,
["next-word-end"] = translate.next_word_end,
["previous-block-start"] = translate.previous_block_start,
["next-block-end"] = translate.next_block_end,
["start-of-doc"] = translate.start_of_doc,
["end-of-doc"] = translate.end_of_doc,
["start-of-line"] = translate.start_of_line,
["end-of-line"] = translate.end_of_line,
["start-of-word"] = translate.start_of_word,
["start-of-indentation"] = translate.start_of_indentation,
["end-of-word"] = translate.end_of_word,
["previous-line"] = DocView.translate.previous_line,
["next-line"] = DocView.translate.next_line,
["previous-page"] = DocView.translate.previous_page,
["next-page"] = DocView.translate.next_page,
["previous-char"] = translate,
["next-char"] = translate,
["previous-word-start"] = translate,
["next-word-end"] = translate,
["previous-block-start"] = translate,
["next-block-end"] = translate,
["start-of-doc"] = translate,
["end-of-doc"] = translate,
["start-of-line"] = translate,
["end-of-line"] = translate,
["start-of-word"] = translate,
["start-of-indentation"] = translate,
["end-of-word"] = translate,
["previous-line"] = DocView.translate,
["next-line"] = DocView.translate,
["previous-page"] = DocView.translate,
["next-page"] = DocView.translate,
}
for name, fn in pairs(translations) do
commands["doc:move-to-" .. name] = function() doc():move_to(fn, dv()) end
commands["doc:select-to-" .. name] = function() doc():select_to(fn, dv()) end
commands["doc:delete-to-" .. name] = function() doc():delete_to(fn, dv()) end
for name, obj in pairs(translations) do
commands["doc:move-to-" .. name] = function() doc():move_to(obj[name:gsub("-", "_")], dv()) end
commands["doc:select-to-" .. name] = function() doc():select_to(obj[name:gsub("-", "_")], dv()) end
commands["doc:delete-to-" .. name] = function() doc():delete_to(obj[name:gsub("-", "_")], dv()) end
end
commands["doc:move-to-previous-char"] = function()

5
data/core/commandview.lua
View File

@ -56,8 +56,8 @@ function CommandView:get_name()
end
function CommandView:get_line_screen_position()
local x = CommandView.super.get_line_screen_position(self, 1)
function CommandView:get_line_screen_position(line, col)
local x = CommandView.super.get_line_screen_position(self, 1, col)
local _, y = self:get_content_offset()
local lh = self:get_line_height()
return x, y + (self.size.y - lh) / 2
@ -243,6 +243,7 @@ function CommandView:draw_line_gutter(idx, x, y)
x = x + style.padding.x
renderer.draw_text(self:get_font(), self.label, x, y + yoffset, color)
core.pop_clip_rect()
return self:get_line_height()
end

63
data/core/docview.lua
View File

@ -121,14 +121,18 @@ function DocView:get_gutter_width()
end
function DocView:get_line_screen_position(idx)
function DocView:get_line_screen_position(line, col)
local x, y = self:get_content_offset()
local lh = self:get_line_height()
local gw = self:get_gutter_width()
return x + gw, y + (idx-1) * lh + style.padding.y
y = y + (line-1) * lh + style.padding.y
if col then
return x + gw + self:get_col_x_offset(line, col), y
else
return x + gw, y
end
end
function DocView:get_line_text_y_offset()
local lh = self:get_line_height()
local th = self:get_font():get_height()
@ -198,8 +202,9 @@ end
function DocView:scroll_to_line(line, ignore_if_visible, instant)
local min, max = self:get_visible_line_range()
if not (ignore_if_visible and line > min and line < max) then
local lh = self:get_line_height()
self.scroll.to.y = math.max(0, lh * (line - 1) - self.size.y / 2)
local x, y = self:get_line_screen_position(line)
local ox, oy = self:get_content_offset()
self.scroll.to.y = math.max(0, y - oy - self.size.y / 2)
if instant then
self.scroll.y = self.scroll.to.y
end
@ -208,10 +213,10 @@ end
function DocView:scroll_to_make_visible(line, col)
local min = self:get_line_height() * (line - 1)
local max = self:get_line_height() * (line + 2) - self.size.y
self.scroll.to.y = math.min(self.scroll.to.y, min)
self.scroll.to.y = math.max(self.scroll.to.y, max)
local ox, oy = self:get_content_offset()
local _, ly = self:get_line_screen_position(line, col)
local lh = self:get_line_height()
self.scroll.to.y = common.clamp(self.scroll.to.y, ly - oy - self.size.y + lh * 2, ly - oy - lh)
local gw = self:get_gutter_width()
local xoffset = self:get_col_x_offset(line, col)
local xmargin = 3 * self:get_font():get_width(' ')
@ -314,14 +319,15 @@ function DocView:draw_line_highlight(x, y)
end
function DocView:draw_line_text(idx, x, y)
function DocView:draw_line_text(line, x, y)
local default_font = self:get_font()
local tx, ty = x, y + self:get_line_text_y_offset()
for _, type, text in self.doc.highlighter:each_token(idx) do
for _, type, text in self.doc.highlighter:each_token(line) do
local color = style.syntax[type]
local font = style.syntax_fonts[type] or default_font
tx = renderer.draw_text(font, text, tx, ty, color)
end
return self:get_line_height()
end
function DocView:draw_caret(x, y)
@ -329,7 +335,7 @@ function DocView:draw_caret(x, y)
renderer.draw_rect(x, y, style.caret_width, lh, style.caret)
end
function DocView:draw_line_body(idx, x, y)
function DocView:draw_line_body(line, x, y)
-- draw highlight if any selection ends on this line
local draw_highlight = false
local hcl = config.highlight_current_line
@ -352,14 +358,14 @@ function DocView:draw_line_body(idx, x, y)
end
-- draw selection if it overlaps this line
local lh = self:get_line_height()
for lidx, line1, col1, line2, col2 in self.doc:get_selections(true) do
if idx >= line1 and idx <= line2 then
local text = self.doc.lines[idx]
if line1 ~= idx then col1 = 1 end
if line2 ~= idx then col2 = #text + 1 end
local x1 = x + self:get_col_x_offset(idx, col1)
local x2 = x + self:get_col_x_offset(idx, col2)
local lh = self:get_line_height()
if line >= line1 and line <= line2 then
local text = self.doc.lines[line]
if line1 ~= line then col1 = 1 end
if line2 ~= line then col2 = #text + 1 end
local x1 = x + self:get_col_x_offset(line, col1)
local x2 = x + self:get_col_x_offset(line, col2)
if x1 ~= x2 then
renderer.draw_rect(x1, y, x2 - x1, lh, style.selection)
end
@ -367,20 +373,22 @@ function DocView:draw_line_body(idx, x, y)
end
-- draw line's text
self:draw_line_text(idx, x, y)
return self:draw_line_text(line, x, y)
end
function DocView:draw_line_gutter(idx, x, y, width)
function DocView:draw_line_gutter(line, x, y, width)
local color = style.line_number
for _, line1, _, line2 in self.doc:get_selections(true) do
if idx >= line1 and idx <= line2 then
if line >= line1 and line <= line2 then
color = style.line_number2
break
end
end
x = x + style.padding.x
common.draw_text(self:get_font(), color, idx, "right", x, y, width, self:get_line_height())
local lh = self:get_line_height()
common.draw_text(self:get_font(), color, line, "right", x, y + yoffset, width, lh)
return lh
end
@ -394,8 +402,7 @@ function DocView:draw_overlay()
and system.window_has_focus() then
if config.disable_blink
or (core.blink_timer - core.blink_start) % T < T / 2 then
local x, y = self:get_line_screen_position(line)
self:draw_caret(x + self:get_col_x_offset(line, col), y)
self:draw_caret(self:get_line_screen_position(line, col))
end
end
end
@ -413,8 +420,7 @@ function DocView:draw()
local x, y = self:get_line_screen_position(minline)
local gw, gpad = self:get_gutter_width()
for i = minline, maxline do
self:draw_line_gutter(i, self.position.x, y, gpad and gw - gpad or gw)
y = y + lh
y = y + (self:draw_line_gutter(i, self.position.x, y, gpad and gw - gpad or gw) or lh)
end
local pos = self.position
@ -423,8 +429,7 @@ function DocView:draw()
-- right side it is redundant with the Node's clip.
core.push_clip_rect(pos.x + gw, pos.y, self.size.x - gw, self.size.y)
for i = minline, maxline do
self:draw_line_body(i, x, y)
y = y + lh
y = y + (self:draw_line_body(i, x, y) or lh)
end
self:draw_overlay()
core.pop_clip_rect()

523
data/plugins/linewrapping.lua Normal file
View File

@ -0,0 +1,523 @@
-- mod-version:2 -- lite-xl 2.0
local core = require "core"
local common = require "core.common"
local DocView = require "core.docview"
local Doc = require "core.doc"
local style = require "core.style"
local config = require "core.config"
local command = require "core.command"
local keymap = require "core.keymap"
local translate = require "core.doc.translate"
config.plugins.linewrapping = {
-- The type of wrapping to perform. Can be "letter" or "word".
mode = "letter",
-- If nil, uses the DocView's size, otherwise, uses this exact width.
width_override = nil,
-- Whether or not to draw a guide
guide = true,
-- Whether or not we should indent ourselves like the first line of a wrapped block.
indent = true,
-- Whether or not to enable wrapping by default when opening files.
enable_by_default = true
}
local LineWrapping = {}
-- Computes the breaks for a given line, width and mode. Returns a list of columns
-- at which the line should be broken.
function LineWrapping.compute_line_breaks(doc, default_font, line, width, mode)
local xoffset, last_i, i, last_space, last_width, begin_width = 0, 1, 1, 1, 0, 0
local splits = { 1 }
for idx, type, text in doc.highlighter:each_token(line) do
local font = style.syntax_fonts[type] or default_font
if idx == 1 and config.plugins.linewrapping.indent then
local _, indent_end = text:find("^%s+")
if indent_end then begin_width = font:get_width(text:sub(1, indent_end)) end
end
local w = font:get_width(text)
if xoffset + w > width then
for char in common.utf8_chars(text) do
w = font:get_width(char)
xoffset = xoffset + w
if xoffset > width then
if mode == "word" then
table.insert(splits, last_space + 1)
xoffset = xoffset - last_width + w + begin_width
else
table.insert(splits, i)
xoffset = w + begin_width
end
elseif char == ' ' then
last_space = i
last_width = xoffset
end
i = i + #char
end
else
xoffset = xoffset + w
i = i + #text
end
end
return splits, begin_width
end
-- breaks are held in a single table that contains n*2 elements, where n is the amount of line breaks.
-- each element represents line and column of the break. line_offset will check from the specified line
-- if the first line has not changed breaks, it will stop there.
function LineWrapping.reconstruct_breaks(docview, default_font, width, line_offset)
if width ~= math.huge then
local doc = docview.doc
-- two elements per wrapped line; first maps to original line number, second to column number.
docview.wrapped_lines = { }
-- one element per actual line; maps to the first index of in wrapped_lines for this line
docview.wrapped_line_to_idx = { }
-- one element per actual line; gives the indent width for the acutal line
docview.wrapped_line_offsets = { }
docview.wrapped_settings = { ["width"] = width, ["font"] = default_font }
for i = line_offset or 1, #doc.lines do
local breaks, offset = LineWrapping.compute_line_breaks(doc, default_font, i, width, config.plugins.linewrapping.mode)
table.insert(docview.wrapped_line_offsets, offset)
for k, col in ipairs(breaks) do
table.insert(docview.wrapped_lines, i)
table.insert(docview.wrapped_lines, col)
end
end
-- list of indices for wrapped_lines, that are based on original line number
-- holds the index to the first in the wrapped_lines list.
local last_wrap = nil
for i = 1, #docview.wrapped_lines, 2 do
if not last_wrap or last_wrap ~= docview.wrapped_lines[i] then
table.insert(docview.wrapped_line_to_idx, (i + 1) / 2)
last_wrap = docview.wrapped_lines[i]
end
end
else
docview.wrapped_lines = nil
docview.wrapped_line_to_idx = nil
docview.wrapped_line_offsets = nil
docview.wrapped_settings = nil
end
end
-- When we have an insertion or deletion, we have four sections of text.
-- 1. The unaffected section, located prior to the cursor. This is completely ignored.
-- 2. The beginning of the affected line prior to the insertion or deletion. Begins on column 1 of the selection.
-- 3. The removed/pasted lines.
-- 4. Every line after the modification, begins one line after the selection in the initial document.
function LineWrapping.update_breaks(docview, old_line1, old_line2, net_lines)
-- Step 1: Determine the index for the line for #2.
local old_idx1 = docview.wrapped_line_to_idx[old_line1] or 1
-- Step 2: Determine the index of the line for #4.
local old_idx2 = (docview.wrapped_line_to_idx[old_line2 + 1] or ((#docview.wrapped_lines / 2) + 1)) - 1
-- Step 3: Remove all old breaks for the old lines from the table, and all old widths from wrapped_line_offsets.
local offset = (old_idx1 - 1) * 2 + 1
for i = old_idx1, old_idx2 do
table.remove(docview.wrapped_lines, offset)
table.remove(docview.wrapped_lines, offset)
end
for i = old_line1, old_line2 do
table.remove(docview.wrapped_line_offsets, old_line1)
end
-- Step 4: Shift the line number of wrapped_lines past #4 by the amount of inserted/deleted lines.
if net_lines ~= 0 then
for i = offset, #docview.wrapped_lines, 2 do
docview.wrapped_lines[i] = docview.wrapped_lines[i] + net_lines
end
end
-- Step 5: Compute the breaks and offsets for the lines for #2 and #3. Insert them into the table.
local new_line1 = old_line1
local new_line2 = old_line2 + net_lines
for line = new_line1, new_line2 do
local breaks, begin_width = LineWrapping.compute_line_breaks(docview.doc, docview.wrapped_settings.font, line, docview.wrapped_settings.width, config.plugins.linewrapping.mode)
table.insert(docview.wrapped_line_offsets, line, begin_width)
for i,b in ipairs(breaks) do
table.insert(docview.wrapped_lines, offset, b)
table.insert(docview.wrapped_lines, offset, line)
offset = offset + 2
end
end
-- Step 6: Recompute the wrapped_line_to_idx cache from #2.
local line = old_line1
offset = (old_idx1 - 1) * 2 + 1
while offset < #docview.wrapped_lines do
if docview.wrapped_lines[offset + 1] == 1 then
docview.wrapped_line_to_idx[line] = ((offset - 1) / 2) + 1
line = line + 1
end
offset = offset + 2
end
while line <= #docview.wrapped_line_to_idx do
table.remove(docview.wrapped_line_to_idx)
end
end
-- Draws a guide if applicable to show where wrapping is occurring.
function LineWrapping.draw_guide(docview)
if config.plugins.linewrapping.guide and docview.wrapped_settings.width ~= math.huge then
local x, y = docview:get_content_offset()
local gw = docview:get_gutter_width()
renderer.draw_rect(x + gw + docview.wrapped_settings.width, y, 1, core.root_view.size.y, style.selection)
end
end
function LineWrapping.update_docview_breaks(docview)
local x,y,w,h = docview:get_scrollbar_rect()
local width = config.plugins.linewrapping.width_override or (docview.size.x - docview:get_gutter_width() - w)
if (not docview.wrapped_settings or docview.wrapped_settings.width == nil or width ~= docview.wrapped_settings.width) then
docview.scroll.to.x = 0
LineWrapping.reconstruct_breaks(docview, docview:get_font(), width)
end
end
local function get_idx_line_col(docview, idx)
local doc = docview.doc
if not docview.wrapped_settings then
if idx > #doc.lines then return #doc.lines, #doc.lines[#doc.lines] + 1 end
return idx, 1
end
if idx < 1 then return 1, 1 end
local offset = (idx - 1) * 2 + 1
if offset > #docview.wrapped_lines then return #doc.lines, #doc.lines[#doc.lines] + 1 end
return docview.wrapped_lines[offset], docview.wrapped_lines[offset + 1]
end
local function get_idx_line_length(docview, idx)
local doc = docview.doc
if not docview.wrapped_settings then
if idx > #doc.lines then return #doc.lines[#doc.lines] + 1 end
return #doc.lines[idx]
end
local offset = (idx - 1) * 2 + 1
local start = docview.wrapped_lines[offset + 1]
if docview.wrapped_lines[offset + 2] and docview.wrapped_lines[offset + 2] == docview.wrapped_lines[offset] then
return docview.wrapped_lines[offset + 3] - docview.wrapped_lines[offset + 1]
else
return #doc.lines[docview.wrapped_lines[offset]] - docview.wrapped_lines[offset + 1] + 1
end
end
local function get_total_wrapped_lines(docview)
if not docview.wrapped_settings then return docview.doc and #docview.doc.lines end
return #docview.wrapped_lines / 2
end
-- If line end, gives the end of an index line, rather than the first character of the next line.
local function get_line_idx_col_count(docview, line, col, line_end, ndoc)
local doc = docview.doc
if not docview.wrapped_settings then return common.clamp(line, 1, #doc.lines), col, 1, 1 end
if line > #doc.lines then return get_line_idx_col_count(docview, #doc.lines, #doc.lines[#doc.lines] + 1) end
line = math.max(line, 1)
local idx = docview.wrapped_line_to_idx[line] or 1
local ncol, scol = 1, 1
if col then
local i = idx + 1
while line == docview.wrapped_lines[(i - 1) * 2 + 1] and col >= docview.wrapped_lines[(i - 1) * 2 + 2] do
local nscol = docview.wrapped_lines[(i - 1) * 2 + 2]
if line_end and col == nscol then
break
end
scol = nscol
i = i + 1
idx = idx + 1
end
ncol = (col - scol) + 1
end
local count = (docview.wrapped_line_to_idx[line + 1] or (get_total_wrapped_lines(docview) + 1)) - (docview.wrapped_line_to_idx[line] or get_total_wrapped_lines(docview))
return idx, ncol, count, scol
end
local function get_line_col_from_index_and_x(docview, idx, x)
local doc = docview.doc
local line, col = get_idx_line_col(docview, idx)
if idx < 1 then return 1, 1 end
local xoffset, last_i, i = (col ~= 1 and docview.wrapped_line_offsets[line] or 0), col, 1
if x < xoffset then return line, col end
local default_font = docview:get_font()
for _, type, text in docview.doc.highlighter:each_token(line) do
local font, w = style.syntax_fonts[type] or default_font, 0
for char in common.utf8_chars(text) do
if i >= col then
if xoffset >= x then
return line, (xoffset - x > (w / 2) and last_i or i)
end
w = font:get_width(char)
xoffset = xoffset + w
end
last_i = i
i = i + #char
end
end
return line, #doc.lines[line]
end
local open_files = {}
local old_doc_insert = Doc.raw_insert
function Doc:raw_insert(line, col, text, undo_stack, time)
local old_lines = #self.lines
old_doc_insert(self, line, col, text, undo_stack, time)
if open_files[self] then
for i,docview in ipairs(open_files[self]) do
if docview.wrapped_settings then
local lines = #self.lines - old_lines
LineWrapping.update_breaks(docview, line, line, lines)
end
end
end
end
local old_doc_remove = Doc.raw_remove
function Doc:raw_remove(line1, col1, line2, col2, undo_stack, time)
local old_lines = #self.lines
old_doc_remove(self, line1, col1, line2, col2, undo_stack, time)
if open_files[self] then
for i,docview in ipairs(open_files[self]) do
if docview.wrapped_settings then
local lines = #self.lines - old_lines
LineWrapping.update_breaks(docview, line1, line2, lines)
end
end
end
end
local old_doc_update = DocView.update
function DocView:update()
old_doc_update(self)
if self.wrapped_settings and self.size.x > 0 then
LineWrapping.update_docview_breaks(self)
end
end
function DocView:get_scrollable_size()
if not config.scroll_past_end then
return self:get_line_height() * get_total_wrapped_lines(self) + style.padding.y * 2
end
return self:get_line_height() * (get_total_wrapped_lines(self) - 1) + self.size.y
end
local old_new = DocView.new
function DocView:new(doc)
old_new(self, doc)
if not open_files[doc] then open_files[doc] = {} end
table.insert(open_files[doc], self)
if config.plugins.linewrapping.enable_by_default then
LineWrapping.update_docview_breaks(self)
end
end
local old_scroll_to_make_visible = DocView.scroll_to_make_visible
function DocView:scroll_to_make_visible(line, col)
old_scroll_to_make_visible(self, line, col)
if self.wrapped_settings then self.scroll.to.x = 0 end
end
local old_get_visible_line_range = DocView.get_visible_line_range
function DocView:get_visible_line_range()
if not self.wrapped_settings then return old_get_visible_line_range(self) end
local x, y, x2, y2 = self:get_content_bounds()
local lh = self:get_line_height()
local minline = get_idx_line_col(self, math.max(1, math.floor(y / lh)))
local maxline = get_idx_line_col(self, math.min(get_total_wrapped_lines(self), math.floor(y2 / lh) + 1))
return minline, maxline
end
local old_get_x_offset_col = DocView.get_x_offset_col
function DocView:get_x_offset_col(line, x)
if not self.wrapped_settings then return old_get_x_offset_col(self, line, x) end
local idx = get_line_idx_col_count(self, line)
return get_line_col_from_index_and_x(self, idx, x)
end
-- If line end is true, returns the end of the previous line, in a multi-line break.
local old_get_col_x_offset = DocView.get_col_x_offset
function DocView:get_col_x_offset(line, col, line_end)
if not self.wrapped_settings then return old_get_col_x_offset(self, line, col) end
local idx, ncol, count, scol = get_line_idx_col_count(self, line, col, line_end)
local xoffset, i = (scol ~= 1 and self.wrapped_line_offsets[line] or 0), 1
local default_font = self:get_font()
for _, type, text in self.doc.highlighter:each_token(line) do
if i + #text >= scol then
if i < scol then
text = text:sub(scol - i + 1)
i = scol
end
local font = style.syntax_fonts[type] or default_font
for char in common.utf8_chars(text) do
if i >= col then
return xoffset
end
xoffset = xoffset + font:get_width(char)
i = i + #char
end
else
i = i + #text
end
end
return xoffset
end
local old_get_line_screen_position = DocView.get_line_screen_position
function DocView:get_line_screen_position(line, col)
if not self.wrapped_settings then return old_get_line_screen_position(self, line, col) end
local idx, ncol, count = get_line_idx_col_count(self, line, col)
local x, y = self:get_content_offset()
local lh = self:get_line_height()
local gw = self:get_gutter_width()
return x + gw + (col and self:get_col_x_offset(line, col) or 0), y + (idx-1) * lh + style.padding.y
end
local old_resolve_screen_position = DocView.resolve_screen_position
function DocView:resolve_screen_position(x, y)
if not self.wrapped_settings then return old_resolve_screen_position(self, x, y) end
local ox, oy = self:get_line_screen_position(1)
local idx = common.clamp(math.floor((y - oy) / self:get_line_height()) + 1, 1, get_total_wrapped_lines(self))
return get_line_col_from_index_and_x(self, idx, x - ox)
end
local old_draw_line_text = DocView.draw_line_text
function DocView:draw_line_text(line, x, y)
if not self.wrapped_settings then return old_draw_line_text(self, line, x, y) end
local default_font = self:get_font()
local tx, ty, begin_width = x, y + self:get_line_text_y_offset(), self.wrapped_line_offsets[line]
local lh = self:get_line_height()
local idx, _, count = get_line_idx_col_count(self, line)
local total_offset = 1
for _, type, text in self.doc.highlighter:each_token(line) do
local color = style.syntax[type]
local font = style.syntax_fonts[type] or default_font
local token_offset = 1
-- Split tokens if we're at the end of the document.
while text ~= nil and token_offset <= #text do
local next_line, next_line_start_col = get_idx_line_col(self, idx + 1)
if next_line ~= line then
next_line_start_col = #self.doc.lines[line]
end
local max_length = next_line_start_col - total_offset
local rendered_text = text:sub(token_offset, token_offset + max_length - 1)
tx = renderer.draw_text(font, rendered_text, tx, ty, color)
total_offset = total_offset + #rendered_text
if total_offset ~= next_line_start_col or max_length == 0 then break end
token_offset = token_offset + #rendered_text
idx = idx + 1
tx, ty = x + begin_width, ty + lh
end
end
return lh * count
end
local old_draw_line_body = DocView.draw_line_body
function DocView:draw_line_body(line, x, y)
if not self.wrapped_settings then return old_draw_line_body(self, line, x, y) end
local lh = self:get_line_height()
local idx0 = get_line_idx_col_count(self, line)
for lidx, line1, col1, line2, col2 in self.doc:get_selections(true) do
if line >= line1 and line <= line2 then
if line1 ~= line then col1 = 1 end
if line2 ~= line then col2 = #self.doc.lines[line] + 1 end
if col1 ~= col2 then
local idx1, ncol1 = get_line_idx_col_count(self, line, col1)
local idx2, ncol2 = get_line_idx_col_count(self, line, col2)
for i = idx1, idx2 do
local x1, x2 = x + (idx1 == i and self:get_col_x_offset(line1, col1) or 0)
if idx2 == i then
x2 = x + self:get_col_x_offset(line, col2)
else
x2 = x + self:get_col_x_offset(line, get_idx_line_length(self, i, line) + 1, true)
end
renderer.draw_rect(x1, y + (i - idx0) * lh, x2 - x1, lh, style.selection)
end
end
end
end
local draw_highlight = nil
for lidx, line1, col1, line2, col2 in self.doc:get_selections(true) do
-- draw line highlight if caret is on this line
if draw_highlight ~= false and config.highlight_current_line
and line1 == line and core.active_view == self then
draw_highlight = (line1 == line2 and col1 == col2)
end
end
if draw_highlight then
local _, _, count = get_line_idx_col_count(self, line)
for i=1,count do
self:draw_line_highlight(x + self.scroll.x, y + lh * (i - 1))
end
end
-- draw line's text
return self:draw_line_text(line, x, y)
end
local old_draw = DocView.draw
function DocView:draw()
old_draw(self)
if self.wrapped_settings then
LineWrapping.draw_guide(self)
end
end
local old_draw_line_gutter = DocView.draw_line_gutter
function DocView:draw_line_gutter(line, x, y, width)
local lh = self:get_line_height()
local _, _, count = get_line_idx_col_count(self, line)
return (old_draw_line_gutter(self, line, x, y, width) or lh) * count
end
local old_translate_end_of_line = translate.end_of_line
function translate.end_of_line(doc, line, col)
if not core.active_view or core.active_view.doc ~= doc or not core.active_view.wrapped_settings then old_translate_end_of_line(doc, line, col) end
local idx, ncol = get_line_idx_col_count(core.active_view, line, col)
local nline, ncol2 = get_idx_line_col(core.active_view, idx + 1)
if nline ~= line then return line, math.huge end
return line, ncol2 - 1
end
local old_translate_start_of_line = translate.start_of_line
function translate.start_of_line(doc, line, col)
if not core.active_view or core.active_view.doc ~= doc or not core.active_view.wrapped_settings then old_translate_start_of_line(doc, line, col) end
local idx, ncol = get_line_idx_col_count(core.active_view, line, col)
local nline, ncol2 = get_idx_line_col(core.active_view, idx - 1)
if nline ~= line then return line, 1 end
return line, ncol2 + 1
end
local old_previous_line = DocView.translate.previous_line
function DocView.translate.previous_line(doc, line, col, dv)
if not dv.wrapped_settings then return old_previous_line(doc, line, col, dv) end
local idx, ncol = get_line_idx_col_count(dv, line, col)
return get_line_col_from_index_and_x(dv, idx - 1, dv:get_col_x_offset(line, col))
end
local old_next_line = DocView.translate.next_line
function DocView.translate.next_line(doc, line, col, dv)
if not dv.wrapped_settings then return old_next_line(doc, line, col, dv) end
local idx, ncol = get_line_idx_col_count(dv, line, col)
return get_line_col_from_index_and_x(dv, idx + 1, dv:get_col_x_offset(line, col))
end
command.add(nil, {
["line-wrapping:enable"] = function()
if core.active_view and core.active_view.doc then
LineWrapping.update_docview_breaks(core.active_view)
end
end,
["line-wrapping:disable"] = function()
if core.active_view and core.active_view.doc then
LineWrapping.reconstruct_breaks(core.active_view, core.active_view:get_font(), math.huge)
end
end,
["line-wrapping:toggle"] = function()
if core.active_view and core.active_view.doc and core.active_view.wrapped_settings then
command.perform("line-wrapping:disable")
else
command.perform("line-wrapping:enable")
end
end
})
keymap.add {
["f10"] = "line-wrapping:toggle",
}
return LineWrapping