patch 8.2.3697: cannot drag a popup without a border

Problem:    Cannot drag a popup without a border.
Solution:   Add the "dragall" option. (closes #9218)

runtime/doc/popup.txt

@@ -681,6 +681,9 @@ The second argument of |popup_create()| is a dictionary with options:
 			popup does not have a border. As soon as dragging
 			starts and "pos" is "center" it is changed to
 			"topleft".
+	dragall		TRUE to allow the popup to be dragged from every
+			position.  Makes it very difficult to select text in
+			the popup.
 	resize		TRUE to allow the popup to be resized with the mouse
 			by grabbing at the bottom right corner.  Has no effect
 			if the popup does not have a border.

src/mouse.c

@@ -1636,8 +1636,9 @@ retnomove:
 	    {
 		return IN_UNKNOWN;
 	    }
-	    else if ((wp->w_popup_flags & (POPF_DRAG | POPF_RESIZE))
+	    else if (((wp->w_popup_flags & (POPF_DRAG | POPF_RESIZE))
 					      && popup_on_border(wp, row, col))
+				       || (wp->w_popup_flags & POPF_DRAGALL))
 	    {
 		popup_dragwin = wp;
 		popup_start_drag(wp, row, col);

src/popupwin.c

@@ -297,7 +297,7 @@ popup_drag(win_T *wp)
 	return;
     }
 
-    if (!(wp->w_popup_flags & POPF_DRAG))
+    if (!(wp->w_popup_flags & (POPF_DRAG | POPF_DRAGALL)))
 	return;
     wp->w_wantline = drag_start_wantline + (mouse_row - drag_start_row);
     if (wp->w_wantline < 1)
@@ -687,6 +687,14 @@ apply_general_options(win_T *wp, dict_T *dict)
 	else
 	    wp->w_popup_flags &= ~POPF_DRAG;
     }
+    nr = dict_get_bool(dict, (char_u *)"dragall", -1);
+    if (nr != -1)
+    {
+	if (nr)
+	    wp->w_popup_flags |= POPF_DRAGALL;
+	else
+	    wp->w_popup_flags &= ~POPF_DRAGALL;
+    }
 
     nr = dict_get_bool(dict, (char_u *)"posinvert", -1);
     if (nr != -1)
@@ -2358,7 +2366,7 @@ filter_handle_drag(win_T *wp, int c, typval_T *rettv)
     int	row = mouse_row;
     int	col = mouse_col;
 
-    if ((wp->w_popup_flags & POPF_DRAG)
+    if ((wp->w_popup_flags & (POPF_DRAG | POPF_DRAGALL))
 	    && is_mouse_key(c)
 	    && (wp == popup_dragwin
 			  || wp == mouse_find_win(&row, &col, FIND_POPUP)))
@@ -3078,6 +3086,8 @@ f_popup_getoptions(typval_T *argvars, typval_T *rettv)
 	dict_add_string(dict, "title", wp->w_popup_title);
 	dict_add_number(dict, "wrap", wp->w_p_wrap);
 	dict_add_number(dict, "drag", (wp->w_popup_flags & POPF_DRAG) != 0);
+	dict_add_number(dict, "dragall",
+				      (wp->w_popup_flags & POPF_DRAGALL) != 0);
 	dict_add_number(dict, "mapping",
 				      (wp->w_popup_flags & POPF_MAPPING) != 0);
 	dict_add_number(dict, "resize", (wp->w_popup_flags & POPF_RESIZE) != 0);

src/testdir/dumps/Test_popupwin_drag_05.dump

@@ -0,0 +1,10 @@
+>1+0&#ffffff0| @35||+1&&|1+0&&| @35
+|2| @35||+1&&|2+0&&| @35
+|3| @2|h+0#0000001#ffd7ff255|e|l@1|o| +0#0000000#ffffff0@27||+1&&|3+0&&| @35
+|4| @35||+1&&|4+0&&| @35
+|[+3&&|N|o| |N|a|m|e|]| |[|+|]| @5|1|,|1| @11|T|o|p| |[+1&&|N|o| |N|a|m|e|]| |[|+|]| @5|1|,|1| @11|T|o|p
+|1+0&&| @35||+1&&|1+0&&| @35
+|2| @35||+1&&|2+0&&| @35
+|3| @35||+1&&|3+0&&| @35
+|[+1&&|N|o| |N|a|m|e|]| |[|+|]| @5|1|,|1| @11|T|o|p| |[|N|o| |N|a|m|e|]| |[|+|]| @5|1|,|1| @11|T|o|p
+|:+0&&|c|a|l@1| |D|r|a|g|A|l@1|S|t|a|r|t|(|)| @54

src/testdir/dumps/Test_popupwin_drag_06.dump

@@ -0,0 +1,10 @@
+>1+0&#ffffff0| @35||+1&&|1+0&&| @35
+|2| @35||+1&&|2+0&&| @35
+|3| @35||+1&&|3+0&&| @35
+|4| @35||+1&&|4+0&&| @35
+|[+3&&|N|o| |N|a|m|e|]| |[|+|]| @5|1|,|1| @11|T|h+0#0000001#ffd7ff255|e|l@1|o|o+1#0000000#ffffff0| |N|a|m|e|]| |[|+|]| @5|1|,|1| @11|T|o|p
+|1+0&&| @35||+1&&|1+0&&| @35
+|2| @35||+1&&|2+0&&| @35
+|3| @35||+1&&|3+0&&| @35
+|[+1&&|N|o| |N|a|m|e|]| |[|+|]| @5|1|,|1| @11|T|o|p| |[|N|o| |N|a|m|e|]| |[|+|]| @5|1|,|1| @11|T|o|p
+|:+0&&|c|a|l@1| |D|r|a|g|A|l@1|D|r|a|g|(|)| @55

src/testdir/test_popupwin.vim

@@ -565,22 +565,31 @@ func Test_popup_drag()
 	      \ line: &lines - 4,
 	      \ })
 	func Dragit()
+	  map <silent> <F3> :call test_setmouse(&lines - 4, &columns / 2)<CR>
+	  map <silent> <F4> :call test_setmouse(&lines - 8, &columns / 2 - 20)<CR>
 	  call feedkeys("\<F3>\<LeftMouse>\<F4>\<LeftDrag>\<LeftRelease>", "xt")
 	endfunc
-	map <silent> <F3> :call test_setmouse(&lines - 4, &columns / 2)<CR>
-	map <silent> <F4> :call test_setmouse(&lines - 8, &columns / 2 - 20)<CR>
 	func Resize()
+	  map <silent> <F5> :call test_setmouse(6, 21)<CR>
+	  map <silent> <F6> :call test_setmouse(7, 25)<CR>
 	  call feedkeys("\<F5>\<LeftMouse>\<F6>\<LeftDrag>\<LeftRelease>", "xt")
 	endfunc
-	map <silent> <F5> :call test_setmouse(6, 21)<CR>
-	map <silent> <F6> :call test_setmouse(7, 25)<CR>
 	func ClickAndDrag()
-	  call feedkeys("\<F7>\<LeftMouse>\<LeftRelease>", "xt")
+	  map <silent> <F3> :call test_setmouse(5, 2)<CR>
-	  call feedkeys("\<F8>\<LeftMouse>\<F9>\<LeftDrag>\<LeftRelease>", "xt")
+	  map <silent> <F4> :call test_setmouse(3, 14)<CR>
+	  map <silent> <F5> :call test_setmouse(3, 18)<CR>
+	  call feedkeys("\<F3>\<LeftMouse>\<LeftRelease>", "xt")
+	  call feedkeys("\<F4>\<LeftMouse>\<F5>\<LeftDrag>\<LeftRelease>", "xt")
+	endfunc
+	func DragAllStart()
+	  call popup_clear()
+	  call popup_create('hello', #{line: 3, col: 5, dragall: 1})
+	endfunc
+	func DragAllDrag()
+	  map <silent> <F3> :call test_setmouse(3, 5)<CR>
+	  map <silent> <F4> :call test_setmouse(5, 36)<CR>
+	  call feedkeys("\<F3>\<LeftMouse>\<F4>\<LeftDrag>\<LeftRelease>", "xt")
 	endfunc
-	map <silent> <F7> :call test_setmouse(5, 2)<CR>
-	map <silent> <F8> :call test_setmouse(3, 14)<CR>
-	map <silent> <F9> :call test_setmouse(3, 18)<CR>
   END
   call writefile(lines, 'XtestPopupDrag')
   let buf = RunVimInTerminal('-S XtestPopupDrag', #{rows: 10})
@@ -596,6 +605,12 @@ func Test_popup_drag()
   call term_sendkeys(buf, ":call ClickAndDrag()\<CR>")
   call VerifyScreenDump(buf, 'Test_popupwin_drag_04', {})
 
+  " dragging without border
+  call term_sendkeys(buf, ":call DragAllStart()\<CR>")
+  call VerifyScreenDump(buf, 'Test_popupwin_drag_05', {})
+  call term_sendkeys(buf, ":call DragAllDrag()\<CR>")
+  call VerifyScreenDump(buf, 'Test_popupwin_drag_06', {})
+
   " clean up
   call StopVimInTerminal(buf)
   call delete('XtestPopupDrag')

src/version.c

@@ -757,6 +757,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    3697,
 /**/
     3696,
 /**/

src/vim.h

@@ -638,12 +638,13 @@ extern int (*dyn_libintl_wputenv)(const wchar_t *envstring);
 #define POPF_HIDDEN	0x02	// popup is not displayed
 #define POPF_CURSORLINE	0x04	// popup is highlighting at the cursorline
 #define POPF_ON_CMDLINE	0x08	// popup overlaps command line
-#define POPF_DRAG	0x10	// popup can be moved by dragging
+#define POPF_DRAG	0x10	// popup can be moved by dragging border
-#define POPF_RESIZE	0x20	// popup can be resized by dragging
+#define POPF_DRAGALL	0x20	// popup can be moved by dragging everywhere
-#define POPF_MAPPING	0x40	// mapping keys
+#define POPF_RESIZE	0x40	// popup can be resized by dragging
-#define POPF_INFO	0x80	// used for info of popup menu
+#define POPF_MAPPING	0x80	// mapping keys
-#define POPF_INFO_MENU	0x100	// align info popup with popup menu
+#define POPF_INFO	0x100	// used for info of popup menu
-#define POPF_POSINVERT	0x200	// vertical position can be inverted
+#define POPF_INFO_MENU	0x200	// align info popup with popup menu
+#define POPF_POSINVERT	0x400	// vertical position can be inverted
 
 // flags used in w_popup_handled
 #define POPUP_HANDLED_1	    0x01    // used by mouse_find_win()