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more clearly skip prints before screen top

This commit is contained in:
Kartik K. Agaram 2022-07-20 06:53:58 -07:00
parent 26ba6e4e5a
commit d41301c1b7
1 changed files with 19 additions and 21 deletions
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40
text.lua
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@ -31,10 +31,12 @@ function Text.draw(State, line_index, y, startpos)
local frag_len = utf8.len(frag) local frag_len = utf8.len(frag)
--? local s=tostring --? local s=tostring
--? print('('..s(x)..','..s(y)..') '..frag..'('..s(frag_width)..' vs '..s(right)..') '..s(line_index)..' vs '..s(State.screen_top1.line)..'; '..s(pos)..' vs '..s(State.screen_top1.pos)..'; bottom: '..s(State.screen_bottom1.line)..'/'..s(State.screen_bottom1.pos)) --? print('('..s(x)..','..s(y)..') '..frag..'('..s(frag_width)..' vs '..s(right)..') '..s(line_index)..' vs '..s(State.screen_top1.line)..'; '..s(pos)..' vs '..s(State.screen_top1.pos)..'; bottom: '..s(State.screen_bottom1.line)..'/'..s(State.screen_bottom1.pos))
if x + frag_width > State.right then if Text.lt1({line=line_index, pos=pos}, State.screen_top1) then
assert(x > State.left) -- no overfull lines -- render nothing
-- update y only after drawing the first screen line of screen top --? print('skipping', frag)
if Text.lt1(State.screen_top1, {line=line_index, pos=pos}) then else
if x + frag_width > State.right then
assert(x > State.left) -- no overfull lines
y = y + State.line_height y = y + State.line_height
if y + State.line_height > App.screen.height then if y + State.line_height > App.screen.height then
--? print('b', y, App.screen.height, '=>', screen_line_starting_pos) --? print('b', y, App.screen.height, '=>', screen_line_starting_pos)
@ -42,34 +44,30 @@ function Text.draw(State, line_index, y, startpos)
end end
screen_line_starting_pos = pos screen_line_starting_pos = pos
--? print('text: new screen line', y, App.screen.height, screen_line_starting_pos) --? print('text: new screen line', y, App.screen.height, screen_line_starting_pos)
x = State.left
end end
x = State.left
end
--? print('checking to draw', pos, State.screen_top1.pos)
-- don't draw text above screen top
if Text.le1(State.screen_top1, {line=line_index, pos=pos}) then
if State.selection1.line then if State.selection1.line then
local lo, hi = Text.clip_selection(State, line_index, pos, pos+frag_len) local lo, hi = Text.clip_selection(State, line_index, pos, pos+frag_len)
Text.draw_highlight(State, line, x,y, pos, lo,hi) Text.draw_highlight(State, line, x,y, pos, lo,hi)
end end
--? print('drawing '..frag) --? print('drawing '..frag)
App.screen.draw(frag_text, x,y) App.screen.draw(frag_text, x,y)
end -- render cursor if necessary
-- render cursor if necessary if line_index == State.cursor1.line then
if line_index == State.cursor1.line then if pos <= State.cursor1.pos and pos + frag_len > State.cursor1.pos then
if pos <= State.cursor1.pos and pos + frag_len > State.cursor1.pos then if State.search_term then
if State.search_term then if State.lines[State.cursor1.line].data:sub(State.cursor1.pos, State.cursor1.pos+utf8.len(State.search_term)-1) == State.search_term then
if State.lines[State.cursor1.line].data:sub(State.cursor1.pos, State.cursor1.pos+utf8.len(State.search_term)-1) == State.search_term then local lo_px = Text.draw_highlight(line, x,y, pos, State.cursor1.pos, State.cursor1.pos+utf8.len(State.search_term))
local lo_px = Text.draw_highlight(line, x,y, pos, State.cursor1.pos, State.cursor1.pos+utf8.len(State.search_term)) App.color(Text_color)
App.color(Text_color) love.graphics.print(State.search_term, x+lo_px,y)
love.graphics.print(State.search_term, x+lo_px,y) end
else
Text.draw_cursor(State, x+Text.x(frag, State.cursor1.pos-pos+1), y)
end end
else
Text.draw_cursor(State, x+Text.x(frag, State.cursor1.pos-pos+1), y)
end end
end end
x = x + frag_width
end end
x = x + frag_width
pos = pos + frag_len pos = pos + frag_len
end end
if State.search_term == nil then if State.search_term == nil then