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make width of navigation area configurable (#155)

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this allows users to configure navigation width from config.h. it also
allows disabling the navigation function entirely by using a 0 width.

one extra functionality this adds is being able to define an absolute
width (in pixels) instead of just percentage via `NAV_IS_REL`.

Co-authored-by: NRK <nrk@disroot.org>
This commit is contained in:
LuXu
2021-11-04 12:20:28 +08:00
committed by GitHub
parent abf316a066
commit 36f42081d0
3 changed files with 22 additions and 6 deletions
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4
commands.c
View File

@@ -29,7 +29,7 @@ void load_image(int);
bool mark_image(int, bool);
void close_info(void);
void open_info(void);
int ptr_third_x(void);
int nav_button(void);
void redraw(void);
void reset_cursor(void);
void animate(void);
@@ -286,7 +286,7 @@ bool ci_navigate(arg_t n)
bool ci_cursor_navigate(arg_t _)
{
return ci_navigate(ptr_third_x() - 1);
return ci_navigate(nav_button() - 1);
}
bool ci_alternate(arg_t _)

5
config.def.h
View File

@@ -173,6 +173,11 @@ static const button_t buttons[] = {
{ 0, 5, g_zoom, -1 },
};
/* true means NAV_WIDTH is relative (33%), false means absolute (33 pixels) */
static const bool NAV_IS_REL = true;
/* width of navigation area, 0 disables cursor navigation, */
static const unsigned int NAV_WIDTH = 33;
/* mouse cursor on left, middle and right part of the window */
static const cursor_t imgcursor[3] = {
CURSOR_LEFT, CURSOR_ARROW, CURSOR_RIGHT

19
main.c
View File

@@ -392,12 +392,23 @@ void update_info(void)
}
}
int ptr_third_x(void)
int nav_button(void)
{
int x, y;
int x, y, nw;
if (NAV_WIDTH == 0)
return 1;
win_cursor_pos(&win, &x, &y);
return MAX(0, MIN(2, (x / (win.w * 0.33))));
nw = NAV_IS_REL ? win.w * NAV_WIDTH / 100 : NAV_WIDTH;
nw = MIN(nw, (win.w + 1) / 2);
if (x < nw)
return 0;
else if (x < win.w-nw)
return 1;
else
return 2;
}
void redraw(void)
@@ -431,7 +442,7 @@ void reset_cursor(void)
for (i = 0; i < ARRLEN(timeouts); i++) {
if (timeouts[i].handler == reset_cursor) {
if (timeouts[i].active) {
c = ptr_third_x();
c = nav_button();
c = MAX(fileidx > 0 ? 0 : 1, c);
c = MIN(fileidx + 1 < filecnt ? 2 : 1, c);
cursor = imgcursor[c];