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make a function oblivious to line data structure 

- Text.screen_line_index
This commit is contained in:
Kartik K. Agaram 2022-07-17 09:21:57 -07:00
parent 2859063d9d
commit 860cd49f67
1 changed files with 5 additions and 5 deletions
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10
text.lua
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@ -699,7 +699,7 @@ function Text.in_line(State, line_index, x,y)
if x < State.left then return false end
if y < line.starty then return false end
Text.populate_screen_line_starting_pos(State, line_index)
return y < line.starty + State.line_height*(#line.screen_line_starting_pos - Text.screen_line_index(line, line.startpos) + 1)
return y < line.starty + State.line_height*(#line.screen_line_starting_pos - Text.screen_line_index(line.screen_line_starting_pos, line.startpos) + 1)
end
-- convert mx,my in pixels to schema-1 coordinates
@ -711,7 +711,7 @@ function Text.to_pos_on_line(State, line_index, mx, my)
assert(my >= line.starty)
-- duplicate some logic from Text.draw
local y = line.starty
local start_screen_line_index = Text.screen_line_index(line, line.startpos)
local start_screen_line_index = Text.screen_line_index(line.screen_line_starting_pos, line.startpos)
for screen_line_index = start_screen_line_index,#line.screen_line_starting_pos do
local screen_line_starting_pos = line.screen_line_starting_pos[screen_line_index]
local screen_line_starting_byte_offset = Text.offset(line.data, screen_line_starting_pos)
@ -749,9 +749,9 @@ function Text.screen_line_width(line, i)
return App.width(screen_line_text)
end
function Text.screen_line_index(line, pos)
for i = #line.screen_line_starting_pos,1,-1 do
if line.screen_line_starting_pos[i] <= pos then
function Text.screen_line_index(screen_line_starting_pos, pos)
for i = #screen_line_starting_pos,1,-1 do
if screen_line_starting_pos[i] <= pos then
return i
end
end