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-- helpers for the search bar (C-f)
function Text.draw_search_bar()
local h = Line_height+2
local y = App.screen.height-h
love.graphics.setColor(0.9,0.9,0.9)
love.graphics.rectangle('fill', 0, y-10, App.screen.width-1, h+8)
love.graphics.setColor(0.6,0.6,0.6)
love.graphics.line(0, y-10, App.screen.width-1, y-10)
love.graphics.setColor(1,1,1)
love.graphics.rectangle('fill', 20, y-6, App.screen.width-40, h+2, 2,2)
love.graphics.setColor(0.6,0.6,0.6)
love.graphics.rectangle('line', 20, y-6, App.screen.width-40, h+2, 2,2)
love.graphics.setColor(0,0,0)
App.screen.print(Search_term, 25,y-5)
love.graphics.setColor(1,0,0)
if Search_text == nil then
Search_text = App.newText(love.graphics.getFont(), Search_term)
end
love.graphics.circle('fill', 25+App.width(Search_text),y-5+h, 2)
love.graphics.setColor(0,0,0)
end
function Text.search_next()
-- search current line
local pos = Lines[Cursor1.line].data:find(Search_term, Cursor1.pos)
if pos then
Cursor1.pos = pos
end
if pos == nil then
for i=Cursor1.line+1,#Lines do
pos = Lines[i].data:find(Search_term)
if pos then
Cursor1.line = i
Cursor1.pos = pos
break
end
end
end
if pos == nil then
-- wrap around
for i=1,Cursor1.line-1 do
pos = Lines[i].data:find(Search_term)
if pos then
Cursor1.line = i
Cursor1.pos = pos
break
end
end
end
if pos == nil then
Cursor1.line = Search_backup.cursor.line
Cursor1.pos = Search_backup.cursor.pos
Screen_top1.line = Search_backup.screen_top.line
Screen_top1.pos = Search_backup.screen_top.pos
end
if Text.lt1(Cursor1, Screen_top1) or Text.lt1(Screen_bottom1, Cursor1) then
Screen_top1.line = Cursor1.line
local _, pos = Text.pos_at_start_of_cursor_screen_line()
Screen_top1.pos = pos
end
end
function Text.search_previous()
-- search current line
local pos = rfind(Lines[Cursor1.line].data, Search_term, Cursor1.pos)
if pos then
Cursor1.pos = pos
end
if pos == nil then
for i=Cursor1.line-1,1,-1 do
pos = rfind(Lines[i].data, Search_term)
if pos then
Cursor1.line = i
Cursor1.pos = pos
break
end
end
end
if pos == nil then
-- wrap around
for i=#Lines,Cursor1.line+1,-1 do
pos = rfind(Lines[i].data, Search_term)
if pos then
Cursor1.line = i
Cursor1.pos = pos
break
end
end
end
if pos == nil then
Cursor1.line = Search_backup.cursor.line
Cursor1.pos = Search_backup.cursor.pos
Screen_top1.line = Search_backup.screen_top.line
Screen_top1.pos = Search_backup.screen_top.pos
end
if Text.lt1(Cursor1, Screen_top1) or Text.lt1(Screen_bottom1, Cursor1) then
Screen_top1.line = Cursor1.line
local _, pos = Text.pos_at_start_of_cursor_screen_line()
Screen_top1.pos = pos
end
end
function rfind(s, pat, i)
local rs = s:reverse()
local rpat = pat:reverse()
if i == nil then i = #s end
local ri = #s - i + 1
local rendpos = rs:find(rpat, ri)
if rendpos == nil then return nil end
local endpos = #s - rendpos + 1
assert (endpos >= #pat)
return endpos-#pat+1
end
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