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redraw selection only when mouse changes cells (less flicker)

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cy384 2021-03-21 20:21:28 -04:00
parent 84f096b65a
commit d43f919a4f
1 changed files with 25 additions and 4 deletions
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29
ssheven-console.c
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@ -181,11 +181,32 @@ void damage_selection(void)
void update_selection_end(void)
{
Point new_mouse;
GetMouse(&new_mouse);
point_to_cell(new_mouse, &con.select_end_x, &con.select_end_y);
static int last_mouse_cell_x = -1;
static int last_mouse_cell_y = -1;
damage_selection();
int new_mouse_cell_x;
int new_mouse_cell_y;
Point new_mouse;
GetMouse(&new_mouse);
point_to_cell(new_mouse, &new_mouse_cell_x, &new_mouse_cell_y);
// only damage the selection if the mouse has moved outside of the last cell
if (last_mouse_cell_x != new_mouse_cell_x || last_mouse_cell_y != new_mouse_cell_y)
{
// damage the old selection
damage_selection();
con.select_end_x = new_mouse_cell_x;
con.select_end_y = new_mouse_cell_y;
last_mouse_cell_x = new_mouse_cell_x;
last_mouse_cell_y = new_mouse_cell_y;
// damage the new selection
damage_selection();
}
}
// p is in window local coordinates