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#include <glib.h>
#include "state.h"
#include "log.h"
State *state_create(Window *win, Drawer *draw)
{
State *state = g_malloc0(sizeof(State));
g_assert_nonnull(state);
state->win = win;
state->draw = draw;
return state;
}
void state_add_button(State *state, Button *btn)
{
state->btns = g_list_append(state->btns, btn);
}
void state_remove_button(State *state, Button *btn)
{
state->btns = g_list_remove(state->btns, btn);
}
static gint align_compare(gconstpointer a, gconstpointer b)
{
PangoAlignment a_align = CAST(a, Button)->align;
PangoAlignment b_align = CAST(b, Button)->align;
if (a_align < b_align) return -1;
if (a_align > b_align) return 1;
return 0;
}
void state_order_button(State *state)
{
state->btns = g_list_sort(state->btns, align_compare);
}
static gboolean redraw_handler(State *state)
{
log_debug("Redrawing once [relayout=%d]", state->relayout);
if (state->relayout) {
draw_compute_layout(state->draw, state->win, state->btns);
state->relayout = false;
}
draw_paint(state->draw, state->win);
state->idle_id = 0;
return G_SOURCE_REMOVE;
}
void state_request_redraw(State *state, bool relayout)
{
// Override old redraw
if (state->idle_id != 0)
g_source_remove(state->idle_id);
state->relayout = relayout;
if (state->anim_id != 0) return;
state->idle_id = g_idle_add(G_SOURCE_FUNC(redraw_handler), state);
}
static bool anim_check_more(State *state, GList *btns)
{
bool more = false;
for (GList *it = btns; it; it = it->next) {
Button *btn = it->data;
if (btn->anim != NULL) {
bool draw = btn->anim->paint_func != NULL;
bool layout = btn->anim->layout_func != NULL;
// Remove animation if both paint_func and layout_func finished
if (!draw && !layout) {
log_debug("Removing animation [type=%d, end=%ld, button=%p]",
btn->anim->type, btn->anim->start + btn->anim->duration, btn);
animation_destroy(btn->anim);
btn->anim = NULL;
} else {
more = true;
state->relayout |= layout;
}
}
if (!btn->simple && anim_check_more(state, CAST(btn, ButtonGroup)->children))
more = true;
}
return more;
}
static gboolean anim_handler(State *state)
{
bool more = anim_check_more(state, state->btns);
log_debug("Redrawing animation [relayout=%d, more=%d]", state->relayout, more);
if (state->relayout) {
draw_compute_layout(state->draw, state->win, state->btns);
state->relayout = false;
}
draw_paint(state->draw, state->win);
if (!more) state->anim_id = 0;
return more;
}
void state_request_animation(State *state)
{
if (state->idle_id != 0) {
g_source_remove(state->idle_id);
state->idle_id = 0;
}
if (state->anim_id != 0) return;
if (!anim_handler(state)) return;
const int fps = 60;
state->anim_id = g_timeout_add(1000 / fps, G_SOURCE_FUNC(anim_handler), state);
}
void state_destroy(State *state)
{
g_list_free_full(state->btns, (void *)button_destroy);
g_free(state);
}
// vim: ts=4 sw=4 et
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