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particle/progress-bar: allow user to configure an on-click handler

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Since we're typically interrested in *where* (on the progress-bar) the
user clicked, we need a way to pass the clicked position to the
handler.

Normally, the on-click handler is expanded when a particle
instantiates its exposable. At this point, we (obviously) don't have
the click position.

This is solved by expanding the handler a second time, when the bar is
clicked.

Thus, the user can use the "{where}" tag in the click handler. "where"
will be expanded to a percentage value (0-100).
This commit is contained in:
Daniel Eklöf 2018-12-29 17:36:34 +01:00
parent bd365405d7
commit 1f182b862e
3 changed files with 60 additions and 5 deletions
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5
config.c
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@ -324,6 +324,7 @@ particle_progress_bar_from_config(const struct yml_node *node,
const struct yml_node *indicator = yml_get_value(node, "indicator");
const struct yml_node *left_margin = yml_get_value(node, "left_margin");
const struct yml_node *right_margin = yml_get_value(node, "right_margin");
const struct yml_node *on_click = yml_get_value(node, "on_click");
assert(tag != NULL && yml_is_scalar(tag));
assert(length != NULL && yml_is_scalar(length));
@ -334,6 +335,7 @@ particle_progress_bar_from_config(const struct yml_node *node,
assert(indicator != NULL);
assert(left_margin == NULL || yml_is_scalar(left_margin));
assert(right_margin == NULL || yml_is_scalar(right_margin));
assert(on_click == NULL || yml_is_scalar(on_click));
return particle_progress_bar_new(
yml_value_as_string(tag),
@ -344,7 +346,8 @@ particle_progress_bar_from_config(const struct yml_node *node,
particle_from_config(empty, parent_font),
particle_from_config(indicator, parent_font),
left_margin != NULL ? yml_value_as_int(left_margin) : 0,
right_margin != NULL ? yml_value_as_int(right_margin) : 0);
right_margin != NULL ? yml_value_as_int(right_margin) : 0,
on_click != NULL ? yml_value_as_string(on_click) : NULL);
}
static struct particle *