left/right cursor movement, deleting characters

[?]

May 17, 2022, 3:16 AM

IYW7X3WLOPYLSNO5IQNSULUNO4XFEM24DJ2VB5HPBUKWUYFPRCGQC

Dependencies

[2] OFA3PRBS autosave on keystrokes
[3] NCRKBTHC position cursor more precisely
[4] XX7G2FFJ intermingle freehand line drawings with text
[5] 6PUNJS5B backspace
[6] JCSLDGAH beginnings of support for multiple shapes
[7] GVOFXXIT delete drawing using backspace
[8] QW5KQQTD fix a comment
[9] NL5J7Z5H new mode: polygon
[10] 7Q4B6M2D esc to cancel a shape mid-click
[11] 6LJZN727 handle chords
[12] KCIM5UTV revert: back to freehand
[13] ZOOY3ME4 new mode: circle arc
[14] 2C7CTIQY make space for multiple kinds of width
[15] YKRF5V3Z starting to load/save
[16] QU7NHFOV show cursor
[17] G77XIN7M selecting a stroke
[18] WAZVXUV2 simplest possible way to straighten strokes
[19] OTIBCAUJ love2d scaffold
[20] 7RN3AETY bugfix: text sometimes getting colored like drawing borders
[21] VXORMHME delete experimental REPL
[22] 3XD6M3CF refactor
[23] MNWHXPBL more lightweight; select just the stroke at the mouse
[24] HWPK4SMP new mode: manhattan
[25] H7OEU6WP experimental approach to combining keyboard and mouse while drawing

Change contents

replacement in main.lua at line 31

[4.22]→[4.3:14](∅→∅),[4.1237]→[4.3:14](∅→∅),[4.2]→[4.3:14](∅→∅)

lines = {}

[4.1237]

[4.1238]

lines = {''}
cursor_line = 1
-- this is a line
-- ^cursor_pos = 1
-- ^cursor_pos = 2
-- ...
-- ^cursor_pos past end of line is 15
cursor_pos = #lines[cursor_line]+1
replacement in main.lua at line 162

[4.71]→[3.1:127](∅→∅)

love.graphics.print('_', 25+text:getWidth()*1.5, y+6) -- drop the cursor down a bit to account for the increased font size

[4.71]

[4.416]

local line_before_cursor = lines[cursor_line]:sub(1, cursor_pos-1)
local text_before_cursor = love.graphics.newText(love.graphics.getFont(), line_before_cursor)
love.graphics.print('_', 25+text_before_cursor:getWidth()*1.5, y+6) -- drop the cursor down a bit to account for the increased font size
replacement in main.lua at line 496

[4.81]→[4.50:85](∅→∅),[4.50]→[4.50:85](∅→∅)

lines[#lines] = lines[#lines]..t

[4.81]

[2.62]

local byteoffset
if cursor_pos > 1 then
byteoffset = utf8.offset(lines[cursor_line], cursor_pos-1)
else
byteoffset = 0
end
lines[cursor_line] = string.sub(lines[cursor_line], 1, byteoffset)..t..string.sub(lines[cursor_line], byteoffset+1)
cursor_pos = cursor_pos+1
replacement in main.lua at line 519

[4.148]→[4.148:296](∅→∅)

local byteoffset = utf8.offset(lines[#lines], -1)
if byteoffset then
lines[#lines] = string.sub(lines[#lines], 1, byteoffset-1)

[4.148]

[4.296]

if cursor_pos > 1 then
local byte_start = utf8.offset(lines[cursor_line], cursor_pos-1)
local byte_end = utf8.offset(lines[cursor_line], cursor_pos)
if byte_start then
if byte_end then
lines[cursor_line] = string.sub(lines[cursor_line], 1, byte_start-1)..string.sub(lines[cursor_line], byte_end)
else
lines[cursor_line] = string.sub(lines[cursor_line], 1, byte_start-1)
end
cursor_pos = cursor_pos-1
end
end
end
elseif chord == 'left' then
if cursor_pos > 1 then
cursor_pos = cursor_pos - 1
end
elseif chord == 'right' then
if cursor_pos <= #lines[cursor_line] then
cursor_pos = cursor_pos + 1
end
elseif chord == 'delete' then
if cursor_pos <= #lines[cursor_line] then
local byte_start = utf8.offset(lines[cursor_line], cursor_pos)
local byte_end = utf8.offset(lines[cursor_line], cursor_pos+1)
if byte_start then
if byte_end then
lines[cursor_line] = string.sub(lines[cursor_line], 1, byte_start-1)..string.sub(lines[cursor_line], byte_end)
else
lines[cursor_line] = string.sub(lines[cursor_line], 1, byte_start-1)
end
-- no change to cursor_pos