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perf(mouse): only generate <MouseMove> for a new cell positon (#31103)
Problem: Can receive dozens of <MouseMove> events for same cell position. #30965 Solution: Leverage check_multiclick() to detect if cell position is unchanged.
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@ -290,8 +290,9 @@ size_t input_enqueue(String keys)
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= trans_special(&ptr, (size_t)(end - ptr), (char *)buf, FSK_KEYCODE, true, NULL);
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if (new_size) {
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new_size = handle_mouse_event(&ptr, buf, new_size);
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if ((new_size = handle_mouse_event(&ptr, buf, new_size))) {
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input_enqueue_raw((char *)buf, new_size);
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}
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continue;
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}
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@ -326,7 +327,7 @@ size_t input_enqueue(String keys)
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return rv;
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}
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static uint8_t check_multiclick(int code, int grid, int row, int col)
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static uint8_t check_multiclick(int code, int grid, int row, int col, bool *skip_event)
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{
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static int orig_num_clicks = 0;
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static int orig_mouse_code = 0;
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@ -335,24 +336,29 @@ static uint8_t check_multiclick(int code, int grid, int row, int col)
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static int orig_mouse_row = 0;
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static uint64_t orig_mouse_time = 0; // time of previous mouse click
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if ((code >= KE_MOUSEDOWN && code <= KE_MOUSERIGHT) || code == KE_MOUSEMOVE) {
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if (code >= KE_MOUSEDOWN && code <= KE_MOUSERIGHT) {
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return 0;
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}
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// For click events the number of clicks is updated.
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if (code == KE_LEFTMOUSE || code == KE_RIGHTMOUSE || code == KE_MIDDLEMOUSE
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bool no_move = orig_mouse_grid == grid && orig_mouse_col == col && orig_mouse_row == row;
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if (code == KE_MOUSEMOVE) {
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if (no_move) {
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*skip_event = true;
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return 0;
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}
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} else if (code == KE_LEFTMOUSE || code == KE_RIGHTMOUSE || code == KE_MIDDLEMOUSE
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|| code == KE_X1MOUSE || code == KE_X2MOUSE) {
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// For click events the number of clicks is updated.
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uint64_t mouse_time = os_hrtime(); // time of current mouse click (ns)
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// compute the time elapsed since the previous mouse click and
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// convert p_mouse from ms to ns
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uint64_t timediff = mouse_time - orig_mouse_time;
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uint64_t mouset = (uint64_t)p_mouset * 1000000;
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if (code == orig_mouse_code
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&& no_move
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&& timediff < mouset
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&& orig_num_clicks != 4
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&& orig_mouse_grid == grid
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&& orig_mouse_col == col
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&& orig_mouse_row == row) {
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&& orig_num_clicks != 4) {
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orig_num_clicks++;
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} else {
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orig_num_clicks = 1;
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@ -367,6 +373,7 @@ static uint8_t check_multiclick(int code, int grid, int row, int col)
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orig_mouse_row = row;
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uint8_t modifiers = 0;
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if (code != KE_MOUSEMOVE) {
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if (orig_num_clicks == 2) {
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modifiers |= MOD_MASK_2CLICK;
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} else if (orig_num_clicks == 3) {
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@ -374,6 +381,7 @@ static uint8_t check_multiclick(int code, int grid, int row, int col)
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} else if (orig_num_clicks == 4) {
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modifiers |= MOD_MASK_4CLICK;
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}
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}
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return modifiers;
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}
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@ -421,8 +429,12 @@ static unsigned handle_mouse_event(const char **ptr, uint8_t *buf, unsigned bufs
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*ptr += advance;
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}
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bool skip_event = false;
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uint8_t modifiers = check_multiclick(mouse_code, mouse_grid,
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mouse_row, mouse_col);
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mouse_row, mouse_col, &skip_event);
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if (skip_event) {
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return 0;
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}
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if (modifiers) {
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if (buf[1] != KS_MODIFIER) {
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@ -443,7 +455,11 @@ static unsigned handle_mouse_event(const char **ptr, uint8_t *buf, unsigned bufs
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void input_enqueue_mouse(int code, uint8_t modifier, int grid, int row, int col)
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{
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modifier |= check_multiclick(code, grid, row, col);
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bool skip_event = false;
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modifier |= check_multiclick(code, grid, row, col, &skip_event);
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if (skip_event) {
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return;
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}
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uint8_t buf[7];
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uint8_t *p = buf;
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if (modifier) {
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@ -1908,19 +1908,33 @@ describe('ui/mouse/input', function()
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eq(0, api.nvim_get_var('mouse_up2'))
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end)
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it('<MouseMove> is not translated into multiclicks and can be mapped', function()
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it('<MouseMove> to different locations can be mapped', function()
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api.nvim_set_var('mouse_move', 0)
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api.nvim_set_var('mouse_move2', 0)
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command('nnoremap <MouseMove> <Cmd>let g:mouse_move += 1<CR>')
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command('nnoremap <2-MouseMove> <Cmd>let g:mouse_move2 += 1<CR>')
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feed('<MouseMove><0,0>')
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feed('<MouseMove><0,0>')
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api.nvim_input_mouse('move', '', '', 0, 0, 0)
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api.nvim_input_mouse('move', '', '', 0, 0, 0)
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feed('<MouseMove><1,0>')
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feed('<MouseMove><2,0>')
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api.nvim_input_mouse('move', '', '', 0, 0, 3)
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api.nvim_input_mouse('move', '', '', 0, 0, 4)
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eq(4, api.nvim_get_var('mouse_move'))
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eq(0, api.nvim_get_var('mouse_move2'))
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end)
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it('<MouseMove> to same location does not generate events #31103', function()
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api.nvim_input_mouse('move', '', '', 0, 0, 3)
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api.nvim_set_var('mouse_move', 0)
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api.nvim_set_var('mouse_move2', 0)
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command('nnoremap <MouseMove> <Cmd>let g:mouse_move += 1<CR>')
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command('nnoremap <2-MouseMove> <Cmd>let g:mouse_move2 += 1<CR>')
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feed('<MouseMove><3,0>')
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feed('<MouseMove><3,0>')
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api.nvim_input_mouse('move', '', '', 0, 0, 3)
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api.nvim_input_mouse('move', '', '', 0, 0, 3)
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eq(0, api.nvim_get_var('mouse_move'))
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eq(0, api.nvim_get_var('mouse_move2'))
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end)
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it('feeding <MouseMove> in Normal mode does not use uninitialized memory #19480', function()
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feed('<MouseMove>')
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n.poke_eventloop()
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