akkartik/view.love - Change HTWAM4NZFOY463TNSKYIM2EWB7QNBGDRRTTGHF5N3Z4TGC7Q3SFAC

bugfix: scrolling in left/right movements

I'd always had a funny feeling there was something missing there but somehow never thought of the right failing test.

Created by Kartik K. Agaram on June 28, 2022

HTWAM4NZFOY463TNSKYIM2EWB7QNBGDRRTTGHF5N3Z4TGC7Q3SFAC

Dependencies

In channels

main

Change contents

Insertion in text_tests.lua at line 1153 [4.2]

[2.1484]

end
function test_left_arrow_scrolls_up_in_wrapped_line()
  io.write('\ntest_left_arrow_scrolls_up_in_wrapped_line')
  -- display lines starting from second screen line of a line
  App.screen.init{width=Margin_left+30, height=60}
  Lines = load_array{'abc', 'def', 'ghi jkl', 'mno'}
  Line_width = App.screen.width
  Screen_top1 = {line=3, pos=5}
  Screen_bottom1 = {}
  -- cursor is at top of screen
  Cursor1 = {line=3, pos=5}
  App.draw()
  local y = Margin_top
  App.screen.check(y, 'jkl', 'F - test_left_arrow_scrolls_up_in_wrapped_line/baseline/screen:1')
  y = y + Line_height
  App.screen.check(y, 'mno', 'F - test_left_arrow_scrolls_up_in_wrapped_line/baseline/screen:2')
  -- after hitting the left arrow the screen scrolls up to first screen line
  App.run_after_keychord('left')
  y = Margin_top
  App.screen.check(y, 'ghi ', 'F - test_left_arrow_scrolls_up_in_wrapped_line/screen:1')
  y = y + Line_height
  App.screen.check(y, 'jkl', 'F - test_left_arrow_scrolls_up_in_wrapped_line/screen:2')
  y = y + Line_height
  App.screen.check(y, 'mno', 'F - test_left_arrow_scrolls_up_in_wrapped_line/screen:3')
  check_eq(Screen_top1.line, 3, 'F - test_left_arrow_scrolls_up_in_wrapped_line/screen_top')
  check_eq(Screen_top1.pos, 1, 'F - test_left_arrow_scrolls_up_in_wrapped_line/screen_top')
  check_eq(Cursor1.line, 3, 'F - test_left_arrow_scrolls_up_in_wrapped_line/cursor:line')
  check_eq(Cursor1.pos, 4, 'F - test_left_arrow_scrolls_up_in_wrapped_line/cursor:pos')
end
function test_right_arrow_scrolls_down_in_wrapped_line()
  io.write('\ntest_right_arrow_scrolls_down_in_wrapped_line')
  -- display the first three lines with the cursor on the bottom line
  App.screen.init{width=Margin_left+30, height=60}
  Lines = load_array{'abc', 'def', 'ghi jkl', 'mno'}
  Line_width = App.screen.width
  Screen_top1 = {line=1, pos=1}
  Screen_bottom1 = {}
  -- cursor is at bottom right of screen
  Cursor1 = {line=3, pos=5}
  App.draw()
  local y = Margin_top
  App.screen.check(y, 'abc', 'F - test_right_arrow_scrolls_down_in_wrapped_line/baseline/screen:1')
  y = y + Line_height
  App.screen.check(y, 'def', 'F - test_right_arrow_scrolls_down_in_wrapped_line/baseline/screen:2')
  y = y + Line_height
  App.screen.check(y, 'ghi ', 'F - test_right_arrow_scrolls_down_in_wrapped_line/baseline/screen:3')  -- line wrapping includes trailing whitespace
  -- after hitting the right arrow the screen scrolls down by one line
  App.run_after_keychord('right')
  check_eq(Screen_top1.line, 2, 'F - test_right_arrow_scrolls_down_in_wrapped_line/screen_top')
  check_eq(Cursor1.line, 3, 'F - test_right_arrow_scrolls_down_in_wrapped_line/cursor:line')
  check_eq(Cursor1.pos, 6, 'F - test_right_arrow_scrolls_down_in_wrapped_line/cursor:pos')
  y = Margin_top
  App.screen.check(y, 'def', 'F - test_right_arrow_scrolls_down_in_wrapped_line/screen:1')
  y = y + Line_height
  App.screen.check(y, 'ghi ', 'F - test_right_arrow_scrolls_down_in_wrapped_line/screen:2')
  y = y + Line_height
  App.screen.check(y, 'jkl', 'F - test_right_arrow_scrolls_down_in_wrapped_line/screen:3')
end
function test_home_scrolls_up_in_wrapped_line()
  io.write('\ntest_home_scrolls_up_in_wrapped_line')
  -- display lines starting from second screen line of a line
  App.screen.init{width=Margin_left+30, height=60}
  Lines = load_array{'abc', 'def', 'ghi jkl', 'mno'}
  Line_width = App.screen.width
  Screen_top1 = {line=3, pos=5}
  Screen_bottom1 = {}
  -- cursor is at top of screen
  Cursor1 = {line=3, pos=5}
  App.draw()
  local y = Margin_top
  App.screen.check(y, 'jkl', 'F - test_home_scrolls_up_in_wrapped_line/baseline/screen:1')
  y = y + Line_height
  App.screen.check(y, 'mno', 'F - test_home_scrolls_up_in_wrapped_line/baseline/screen:2')
  -- after hitting home the screen scrolls up to first screen line
  App.run_after_keychord('home')
  y = Margin_top
  App.screen.check(y, 'ghi ', 'F - test_home_scrolls_up_in_wrapped_line/screen:1')
  y = y + Line_height
  App.screen.check(y, 'jkl', 'F - test_home_scrolls_up_in_wrapped_line/screen:2')
  y = y + Line_height
  App.screen.check(y, 'mno', 'F - test_home_scrolls_up_in_wrapped_line/screen:3')
  check_eq(Screen_top1.line, 3, 'F - test_home_scrolls_up_in_wrapped_line/screen_top')
  check_eq(Screen_top1.pos, 1, 'F - test_home_scrolls_up_in_wrapped_line/screen_top')
  check_eq(Cursor1.line, 3, 'F - test_home_scrolls_up_in_wrapped_line/cursor:line')
  check_eq(Cursor1.pos, 1, 'F - test_home_scrolls_up_in_wrapped_line/cursor:pos')

Insertion in text_tests.lua at line 1243 [4.2]

[2.1489]

[4.31401]

function test_end_scrolls_down_in_wrapped_line()
  io.write('\ntest_end_scrolls_down_in_wrapped_line')
  -- display the first three lines with the cursor on the bottom line
  App.screen.init{width=Margin_left+30, height=60}
  Lines = load_array{'abc', 'def', 'ghi jkl', 'mno'}
  Line_width = App.screen.width
  Screen_top1 = {line=1, pos=1}
  Screen_bottom1 = {}
  -- cursor is at bottom right of screen
  Cursor1 = {line=3, pos=5}
  App.draw()
  local y = Margin_top
  App.screen.check(y, 'abc', 'F - test_end_scrolls_down_in_wrapped_line/baseline/screen:1')
  y = y + Line_height
  App.screen.check(y, 'def', 'F - test_end_scrolls_down_in_wrapped_line/baseline/screen:2')
  y = y + Line_height
  App.screen.check(y, 'ghi ', 'F - test_end_scrolls_down_in_wrapped_line/baseline/screen:3')  -- line wrapping includes trailing whitespace
  -- after hitting end the screen scrolls down by one line
  App.run_after_keychord('end')
  check_eq(Screen_top1.line, 2, 'F - test_end_scrolls_down_in_wrapped_line/screen_top')
  check_eq(Cursor1.line, 3, 'F - test_end_scrolls_down_in_wrapped_line/cursor:line')
  check_eq(Cursor1.pos, 8, 'F - test_end_scrolls_down_in_wrapped_line/cursor:pos')
  y = Margin_top
  App.screen.check(y, 'def', 'F - test_end_scrolls_down_in_wrapped_line/screen:1')
  y = y + Line_height
  App.screen.check(y, 'ghi ', 'F - test_end_scrolls_down_in_wrapped_line/screen:2')
  y = y + Line_height
  App.screen.check(y, 'jkl', 'F - test_end_scrolls_down_in_wrapped_line/screen:3')
end

Replacement in text.lua at line 297 [7.1]
∅:D[5.107] → [6.1103:1123]
∅:D[8.9457] → [6.1103:1123]
B:BD[6.1103] → [6.1103:1123]
```
    Cursor1.pos = 1
```
[6.1103]
[3.3]
```
    Text.start_of_line()
```
Replacement in text.lua at line 300 [7.1]
∅:D[9.115] → [6.1152:1209]
∅:D[5.128] → [6.1152:1209]
∅:D[8.9516] → [6.1152:1209]
B:BD[6.1152] → [6.1152:1209]
```
    Cursor1.pos = utf8.len(Lines[Cursor1.line].data) + 1
```
[9.115]
[3.24]
```
    Text.end_of_line()
```
Replacement in text.lua at line 306 [7.1]
B:BD[8.9648] → [8.9648:9668]
```
    Cursor1.pos = 1
```
[8.9648]
[8.9668]
```
    Text.start_of_line()
```
Replacement in text.lua at line 311 [7.1]
B:BD[8.9798] → [8.9798:9855]
```
    Cursor1.pos = utf8.len(Lines[Cursor1.line].data) + 1
```
[8.9798]
[10.3956]
```
    Text.end_of_line()
```

Insertion in text.lua at line 500 [7.1]

[11.4931]

end
function Text.start_of_line()
  Cursor1.pos = 1
  if Text.lt1(Cursor1, Screen_top1) then
    Screen_top1 = {line=Cursor1.line, pos=Cursor1.pos}  -- copy
  end
end
function Text.end_of_line()
  Cursor1.pos = utf8.len(Lines[Cursor1.line].data) + 1
  local _,botpos = Text.pos_at_start_of_cursor_screen_line()
  local botline1 = {line=Cursor1.line, pos=botpos}
  if Text.lt1(Screen_bottom1, botline1) then
    Text.snap_cursor_to_bottom_of_screen()
  end

Deletion in text.lua at line 555 [7.1]

B:BD[12.470] → [12.470:560]

    end
    if Cursor1.line < Screen_top1.line then
      Screen_top1.line = Cursor1.line

Insertion in text.lua at line 556 [7.1]

[12.568]

  end
  if Text.lt1(Cursor1, Screen_top1) then
    local top2 = Text.to2(Screen_top1)
    top2 = Text.previous_screen_line(top2)
    Screen_top1 = Text.to1(top2)

Deletion in text.lua at line 577 [7.1]

B:BD[12.1008] → [12.1008:1101]

    end
    if Cursor1.line > Screen_bottom1.line then
      Screen_top1.line = Cursor1.line

Insertion in text.lua at line 579 [7.1]

[13.1327]

  local _,botpos = Text.pos_at_start_of_cursor_screen_line()
  local botline1 = {line=Cursor1.line, pos=botpos}
  if Text.lt1(Screen_bottom1, botline1) then
    Text.snap_cursor_to_bottom_of_screen()
  end