158 lines
6.5 KiB
C
158 lines
6.5 KiB
C
/*
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* meow_select.c — §5.8.6 枚举/预设选择器（M7.2 设置页缺口 #4）。
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*
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* 封装 = BottomSheet（标题 + 选项列表）+ meow_listview(SINGLE) 单选列表。选项用 meow_listview
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* 渲染（单选高亮 primaryContainer、可滚动 meow_scroll 惯性）；外层模态复用 meow_ui_modal_*
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* + meow_ui_modal_capture/restore（与 meow_dialog 同源：scrim 只叠一层/关闭无残影）。
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* 阻塞式（meow_input_pop 轮询）；打开前排空残留触摸；点面板外/左缘返回 = 取消；点选项 = 选中 +
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* 关闭 + on_change 回调。选项数组定长（≤MEOW_SELECT_MAX_ITEMS）。
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*/
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#include "meow_ui.h"
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#include "include/meow_select.h"
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#include "meow_ui_internal.h" /* meow_input_pop/drain + meow_ui_modal_capture/restore */
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#include <string.h>
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#include <stdlib.h>
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#include <unistd.h>
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#define MEOW_SELECT_ROW 48 /* 选项行高（px） */
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struct meow_select {
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char title[96];
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char items[MEOW_SELECT_MAX_ITEMS][64];
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int nitems;
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int cur; /* 初始/当前选中项 */
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int result; /* 选中下标 / -1=取消 */
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int done;
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int h; /* 面板高度（0=自动） */
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meow_select_fn cb;
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void *ctx;
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};
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/* meow_listview src2 数据源：填 title=options[idx]（右尾件无；enabled=1）。 */
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static int select_src2(int idx, meow_list_item *out, void *ctx)
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{
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meow_select *s = (meow_select *)ctx;
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if (idx < 0 || idx >= s->nitems) return 0;
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memset(out, 0, sizeof *out);
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out->title = s->items[idx];
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out->right = MEOW_LIST_RIGHT_NONE;
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out->enabled = 1;
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return 1;
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}
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meow_select *meow_select_create(const char *title, int cur)
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{
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meow_select *s = (meow_select *)calloc(1, sizeof *s);
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if (!s) return NULL;
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if (title) { strncpy(s->title, title, sizeof s->title - 1); s->title[sizeof s->title - 1] = '\0'; }
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s->cur = cur; s->result = -1; s->done = 0;
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return s;
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}
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int meow_select_add_item(meow_select *s, const char *label)
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{
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if (!s || s->nitems >= MEOW_SELECT_MAX_ITEMS) return -1;
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if (label) { strncpy(s->items[s->nitems], label, 63); s->items[s->nitems][63] = '\0'; }
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int idx = s->nitems;
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s->nitems++;
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return idx;
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}
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void meow_select_set_on_change(meow_select *s, meow_select_fn cb, void *ctx)
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{ if (s) { s->cb = cb; s->ctx = ctx; } }
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int meow_select_open(meow_select *s)
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{
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if (!s || s->nitems <= 0) return -1;
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const meow_theme *th = meow_theme_get();
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meow_input_start();
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meow_input_drain(); /* 排空残留触摸（goodix 长尾） */
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s->done = 0; s->result = -1;
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int W = meow_ui_width(), H = meow_ui_height();
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int sb = meow_ui_statusbar_height(); if (sb < 0) sb = 0;
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int pad = 24;
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int title_h = meow_ui_text_height(th->font_title);
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int rowh = MEOW_SELECT_ROW;
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int avail = H - sb - 20;
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int min_h = pad + title_h + 12 + rowh + 20;
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int want = (s->h > 0) ? s->h : min_h;
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int est = pad + title_h + 12 + s->nitems * rowh + 20;
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if (est > want) want = est;
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if (want > avail) want = avail;
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if (want < min_h) want = (min_h < avail) ? min_h : avail;
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int ph = want, py = H - ph; /* 底部面板（顶部圆角） */
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int list_y = py + pad + title_h + 12;
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int list_h = ph - (list_y - py) - pad; /* 底部余量 */
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if (list_h < rowh) list_h = rowh;
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/* 选项列表（meow_listview[SINGLE]：单选高亮 + 可滚动）。open 时创建，close 释放（冷路径）。 */
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meow_widget *lv = meow_listview_create(0, list_y, W, list_h, s->nitems,
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select_src2, s, MEOW_LIST_SEL_SINGLE);
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if (!lv) return -1;
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meow_listview_set_item_h(lv, rowh);
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/* 定位初始选中项在视口内。 */
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int target = s->cur * rowh - (list_h - rowh) / 2;
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int maxs = meow_listview_max_scroll(lv);
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if (target < 0) target = 0;
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if (target > maxs) target = maxs;
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meow_listview_set_scroll(lv, target);
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meow_listview_set_sel(lv, s->cur);
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meow_scroll *sc = meow_scroll_wrap(lv, 1); /* 惯性滚动（fling/snap） */
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/* §6.4 模态作用域 + 背景快照（关闭即还原，无残影/不叠黑）。 */
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meow_ui_modal *m = meow_ui_modal_begin();
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meow_ui_modal_capture();
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/* 首次绘制：遮罩 + 底部面板（顶部圆角）+ 标题 + 选项列表。 */
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meow_ui_fill_rect_alpha(0, 0, W, H, 0x000000, 150);
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meow_gfx_fill_round(0, py, W, ph, th->radius_card, th->surfaceContainerHighest);
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meow_ui_text(pad, py + pad, s->title, th->font_title, th->onSurface);
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meow_widget_draw(lv);
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meow_ui_flush();
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int dy_start = 0, down = 0;
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while (!s->done) {
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meow_input_ev e;
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while (meow_input_pop(&e)) {
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meow_ui_activity_ping(); /* 模态期间交互也重置息屏计时 */
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if (e.type == MEOW_EV_TOUCH_DOWN) { down = 1; dy_start = e.b; }
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else if (e.type == MEOW_EV_TOUCH_MOVE) {
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if (down && sc) {
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meow_scroll_track(sc, e.b - dy_start, meow_ui_time_ms());
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dy_start = e.b;
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}
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} else if (e.type == MEOW_EV_TAP) {
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int x = e.a, y = e.b;
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if (y < py) { s->done = 1; s->result = -1; break; } /* 点面板外 = 取消 */
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int idx = meow_listview_tap_at(lv, x, y); /* 单选高亮 = 选中 */
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if (idx >= 0) {
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s->result = idx; s->cur = idx;
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if (s->cb) s->cb(idx, s->ctx); /* 关闭即回调 */
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s->done = 1;
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}
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/* 面板内但未命中项：保持打开（等下一次点击）。 */
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} else if (e.type == MEOW_EV_SWIPE) {
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if (e.a == MEOW_SWIPE_LEFT) { s->done = 1; s->result = -1; } /* 返回 = 取消 */
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else if (sc) meow_scroll_fling(sc);
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}
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}
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meow_anim_tick(); /* 推进 fling */
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if (!s->done) usleep(16000);
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}
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meow_ui_modal_end(m);
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meow_ui_modal_restore();
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if (sc) meow_scroll_free(sc);
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meow_widget_free(lv);
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return s->result;
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}
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void meow_select_free(meow_select *s) { if (s) free(s); }
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int meow_select_show(const char *title, const char *const *opts, int n, int cur)
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{
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if (!opts || n <= 0) return -1;
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meow_select *s = meow_select_create(title, cur);
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if (!s) return -1;
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for (int i = 0; i < n && i < MEOW_SELECT_MAX_ITEMS; i++) meow_select_add_item(s, opts[i]);
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int r = meow_select_open(s);
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meow_select_free(s);
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return r;
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}
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