patch 8.1.1450: popup window positioning wrong when using padding or borders

Problem:    Popup window positioning wrong when using padding or borders.
Solution:   Fix computing the position.

src/popupwin.c

@@ -382,6 +382,12 @@ popup_adjust_position(win_T *wp)
     int		center_vert = FALSE;
     int		center_hor = FALSE;
     int		allow_adjust_left = !wp->w_popup_fixed;
+    int		top_extra = wp->w_popup_border[0] + wp->w_popup_padding[0];
+    int		right_extra = wp->w_popup_border[1] + wp->w_popup_padding[1];
+    int		bot_extra = wp->w_popup_border[2] + wp->w_popup_padding[2];
+    int		left_extra = wp->w_popup_border[3] + wp->w_popup_padding[3];
+    int		extra_height = top_extra + bot_extra;
+    int		extra_width = left_extra + right_extra;
 
     wp->w_winrow = 0;
     wp->w_wincol = 0;
@@ -474,8 +480,8 @@ popup_adjust_position(win_T *wp)
     {
 	// Right aligned: move to the right if needed.
 	// No truncation, because that would change the height.
-	if (wp->w_width < wp->w_wantcol)
+	if (wp->w_width + extra_width < wp->w_wantcol)
-	    wp->w_wincol = wp->w_wantcol - wp->w_width;
+	    wp->w_wincol = wp->w_wantcol - (wp->w_width + extra_width);
     }
 
     if (wp->w_height <= 1)
@@ -492,9 +498,9 @@ popup_adjust_position(win_T *wp)
     else if (wp->w_popup_pos == POPPOS_BOTRIGHT
 	    || wp->w_popup_pos == POPPOS_BOTLEFT)
     {
-	if (wp->w_height <= wp->w_wantline)
+	if ((wp->w_height + extra_height) <= wp->w_wantline)
 	    // bottom aligned: may move down
-	    wp->w_winrow = wp->w_wantline - wp->w_height;
+	    wp->w_winrow = wp->w_wantline - (wp->w_height + extra_height);
 	else
 	    // not enough space, make top aligned
 	    wp->w_winrow = wp->w_wantline + 1;

src/testdir/dumps/Test_popupwin_corners.dump

@@ -0,0 +1,12 @@
+|-+0&#ffffff0@59| @14
+|-@1|#|-@20|@|-@34| @14
+|-@1|╔+0#0000001#ffd7ff255|═@7|╗|-+0#0000000#ffffff0@2|╔+0#0000001#ffd7ff255|═@7|╗|-+0#0000000#ffffff0@2|╔+0#0000001#ffd7ff255|═@7|╗|-+0#0000000#ffffff0@2|╔+0#0000001#ffd7ff255|═@7|╗|-+0#0000000#ffffff0@8| @14
+|-@1|║+0#0000001#ffd7ff255| @7|║|-+0#0000000#ffffff0@2|║+0#0000001#ffd7ff255| @7|║|-+0#0000000#ffffff0@2|║+0#0000001#ffd7ff255| @7|║|-+0#0000000#ffffff0@2|║+0#0000001#ffd7ff255| @7|║|-+0#0000000#ffffff0@8| @14
+|-@1|║+0#0000001#ffd7ff255| |f|i|r|s|t| @1|║|-+0#0000000#ffffff0@2|║+0#0000001#ffd7ff255| |F|i|r|s|t| @1|║|-+0#0000000#ffffff0@2|║+0#0000001#ffd7ff255| |f|i|R|S|t| @1|║|-+0#0000000#ffffff0@2|║+0#0000001#ffd7ff255| |F|I|r|s|T| @1|║|-+0#0000000#ffffff0@8| @14
+|-@1|║+0#0000001#ffd7ff255| |s|e|c|o|n|d| |║|-+0#0000000#ffffff0@2|║+0#0000001#ffd7ff255| |S|e|c|o|n|D| |║|-+0#0000000#ffffff0@2|║+0#0000001#ffd7ff255| |s|e|C|O|n|d| |║|-+0#0000000#ffffff0@2|║+0#0000001#ffd7ff255| |S|E|c|o|N|D| |║|-+0#0000000#ffffff0@8| @14
+|-@1|║+0#0000001#ffd7ff255| @7|║|-+0#0000000#ffffff0@2|║+0#0000001#ffd7ff255| @7|║|-+0#0000000#ffffff0@2|║+0#0000001#ffd7ff255| @7|║|-+0#0000000#ffffff0@2|║+0#0000001#ffd7ff255| @7|║|-+0#0000000#ffffff0@8| @14
+|-@1|╚+0#0000001#ffd7ff255|═@7|╝|-+0#0000000#ffffff0@2|╚+0#0000001#ffd7ff255|═@7|╝|-+0#0000000#ffffff0@2|╚+0#0000001#ffd7ff255|═@7|╝|-+0#0000000#ffffff0@2|╚+0#0000001#ffd7ff255|═@7|╝|-+0#0000000#ffffff0@8| @14
+|-@27|%|-@20>&|-@8| @14
+|-@59| @14
+|-@59| @14
+@57|9|,|5|1| @9|T|o|p| 

src/testdir/test_popupwin.vim

@@ -175,6 +175,55 @@ func Test_popup_with_syntax_setbufvar()
   call delete('XtestPopup')
 endfunc
 
+func Test_popup_all_corners()
+  if !CanRunVimInTerminal()
+    return
+  endif
+  let lines =<< trim END
+	call setline(1, repeat([repeat('-', 60)], 15))
+	set so=0
+	normal 2G3|r#
+	let winid1 = popup_create(['first', 'second'], {
+	      \ 'line': 'cursor+1',
+	      \ 'col': 'cursor',
+	      \ 'pos': 'topleft',
+	      \ 'border': [],
+	      \ 'padding': [],
+	      \ })
+	normal 25|r@
+	let winid1 = popup_create(['First', 'SeconD'], {
+	      \ 'line': 'cursor+1',
+	      \ 'col': 'cursor',
+	      \ 'pos': 'topright',
+	      \ 'border': [],
+	      \ 'padding': [],
+	      \ })
+	normal 9G29|r%
+	let winid1 = popup_create(['fiRSt', 'seCOnd'], {
+	      \ 'line': 'cursor-1',
+	      \ 'col': 'cursor',
+	      \ 'pos': 'botleft',
+	      \ 'border': [],
+	      \ 'padding': [],
+	      \ })
+	normal 51|r&
+	let winid1 = popup_create(['FIrsT', 'SEcoND'], {
+	      \ 'line': 'cursor-1',
+	      \ 'col': 'cursor',
+	      \ 'pos': 'botright',
+	      \ 'border': [],
+	      \ 'padding': [],
+	      \ })
+  END
+  call writefile(lines, 'XtestPopupCorners')
+  let buf = RunVimInTerminal('-S XtestPopupCorners', {'rows': 12})
+  call VerifyScreenDump(buf, 'Test_popupwin_corners', {})
+
+  " clean up
+  call StopVimInTerminal(buf)
+  call delete('XtestPopupCorners')
+endfunc
+
 func Test_win_execute_closing_curwin()
   split
   let winid = popup_create('some text', {})

src/version.c

@@ -767,6 +767,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1450,
 /**/
     1449,
 /**/