fix(ncm): 列表首行标题不显示 — 行高按字体行高派生(M12)
根因(真机 seated,非数据/颜色/遮挡):SDK meow_listview 双行渲染把 「2*行高 + 2」的文本块在行内垂直居中,且标题只在 ty >= 视口顶时才画 (meow_ui_widget.c:2061 的越界守卫)。真机 source_han_serif 20px 面 ascent 24 + descent 6 → 行高 30 → 文本块 62px,而 ncm 行高 APP_ROW_H=56 → ty = 行顶 - 3;首行行顶 == 视口顶 → ty < 视口顶 → 标题被整条跳过, 副标题(ty+32)仍在视口内照画。两类列表同用该路径 + 同一行高,故症状一致。 修复(不动 SDK):ncm_app_internal.h 新增 ncm_row_h()/ncm_row_h_for_line_h(), 行高 = max(56, 2*字体行高 + 2 + 8)(偶数;本机 30 → 70,卡高 62 == 文本块); home/playlist/queue/cache/search 在 page create 取一次 g_item_h,统一用于 set_item_h 与卡片几何/可见行/页脚/补载视口换算。 回归: - app/test/test_meow_row_text_fit.c(新):真机字库行高矩阵 14/21/26/27/30 48 断言(文本块 ≤ 行高、首行 ty ≥ 0、卡高 ≥ 文本块、旧 56 哨兵)。 - app/test/test_first_row_title_render.c(新):--wrap 行高=30 驱动真实 SDK 渲染 + 读回 PPM 像素计数:旧 56 → 首行标题 0 像素/副标题 186;新 70 → 标题 84/副标题 100。 - test_meow_row_gap、plpage_sim 全 PASS;ncm_host 7 页出图与改动前逐字节相同 (宿主行高 14 → 行高仍 56,证重构无视觉回归);5 页自检 PASS;0 warning。 - plpage_sim 临时目录改 $TMPDIR(Termux /tmp 不可写,原写死无法运行)。 - REPORT §43:根因/排除方向/修复/验证/真机验收要点。
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@@ -33,6 +33,7 @@ static ncm_rect_t r_cont, r_list, r_btn, r_tabs[2];
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static int g_empty_id, g_footer_id, g_btn_id, g_tabbar_id;
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static int g_press_row, g_press_delta, g_dragging, g_drag_last_y;
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static int g_scroll_song, g_scroll_pl; /* 两页签各自滚动位置(§23)*/
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static int g_item_h = APP_ROW_H; /* 两行列表行高(M12:按字体行高派生,见 ncm_row_h) */
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static pthread_mutex_t g_mu = PTHREAD_MUTEX_INITIALIZER;
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static pthread_t g_thr;
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@@ -206,7 +207,7 @@ static void sr_maybe_load_more(void)
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int n = appstate_search_count(g_tab);
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int cap = (g_tab == 0) ? NCM_SEARCH_SONG_MAX : NCM_SEARCH_PL_MAX;
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if (n <= 0 || n >= cap || !appstate_search_has_more(g_tab)) return;
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int item = APP_ROW_H;
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int item = g_item_h;
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int scroll = meow_listview_scroll(g_list);
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if (scroll + r_list.h < n * item - item * 2) return; /* 未近底 */
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g_req_tab = g_tab; g_req_offset = n; g_req_replace = 0;
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@@ -445,6 +446,7 @@ static void sr_page_create(meow_view *v, void *ctx)
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(void)v;
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((search_ctrl *)ctx)->view = v;
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r_cont = ncm_content_rect();
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g_item_h = ncm_row_h(); /* M12:行高按当前字体两行文本块派生(首行标题不被视口顶钳掉) */
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ncm_rect_t field = NR(16, r_cont.y + 12, r_cont.w - 32, 48);
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r_btn = NR(field.x, field.y + field.h + 12, field.w, 44);
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int by = r_btn.y + r_btn.h + 8;
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@@ -462,7 +464,7 @@ static void sr_page_create(meow_view *v, void *ctx)
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sizeof g_st.search_query, MEOW_IME_PINYIN);
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g_list = meow_listview_create(r_list.x, r_list.y, r_list.w, r_list.h, 0,
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sr_src2, NULL, MEOW_LIST_SEL_NONE);
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meow_listview_set_item_h(g_list, APP_ROW_H);
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meow_listview_set_item_h(g_list, g_item_h);
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meow_ui_activity_pop();
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meow_widget_set_z(g_list, 10);
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g_btn_id = meow_draw_custom_register(60, r_btn.x, r_btn.y, r_btn.w, r_btn.h,
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