/* test_meow_ui_iconbtn.c — M7.0a 缺口#2 宿主验证：IconButton 圆形命中 + 按压态 + 位图图标。
 *
 * 覆盖：
 *   I1  圆形命中：中心/边界命中，角部/外缘不命中（区别于矩形按钮）；
 *   I2  owner==active + enabled 双闸门：非 active 或禁用不命中；
 *   I3  按压态视觉：设 MEOW_WS_PRESSED 后重绘，圆心像素向 onSurface 变亮（与未按不同）；
 *       禁用时圆心向灰变暗；
 *   I4  实时按压（meow_input_touch 注入）：按下命中圆心 → 圆心变亮；释放恢复。
 *
 * 编译（宿主 gcc，链真实 gfx/sys/theme/vol/log/widget/input/activity/dialog/ime + 打桩 font/global）：
 *   gcc -Wall -Wextra -o test_meow_ui_iconbtn test_meow_ui_iconbtn.c test_host_stub.c \
 *       meow_ui_gfx.c meow_ui_sys.c meow_ui_theme.c meow_ui_vol.c meow_ui_log.c \
 *       meow_ui_widget.c meow_ui_input.c meow_ui_activity.c meow_ui_dialog.c meow_ui_ime.c meow_ui_str.c \
 *       meow_pinyin.c meow_ui_draw.c meow_ui_view.c meow_ui_box.c meow_ui_anim.c meow_ui_scroll.c \
 *       meow_ui_img.c meow_ui_media.c meow_notify_ipc.c stb_image.c \
 *       -I. -I../meow_launcherd -DMEOW_UI_HOST_TEST -pthread -lm
 * 运行：./test_meow_ui_iconbtn
 */
#include "meow_ui.h"
#include "meow_ui_internal.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>

static int g_fail = 0;
#define CHECK(cond, name) do { \
    if (cond) printf("  PASS %s\n", name); \
    else { printf("  FAIL %s\n", name); g_fail++; } } while (0)

/* ---- back_buf 像素读取（断言真实渲染，不依赖目检） ---- */
static void rd_px(int x, int y, unsigned short *p)
{
    unsigned char *bb = meow_ui_back_buf();
    int line = meow_ui_back_buf_pitch(), bpp = meow_ui_back_buf_bpp();
    if (!bb || x < 0 || y < 0) { *p = 0; return; }
    if (bpp == 16) *p = *(unsigned short *)(bb + (size_t)y * line + (size_t)x * 2);
    else *p = (unsigned short)(*(unsigned int *)(bb + (size_t)y * line + (size_t)x * 4) >> 16);
}
static unsigned short px565_at(int x, int y)
{
    unsigned short p; rd_px(x, y, &p); return p;
}

int main(void)
{
    setenv("MEOW_UI_DUMP", "/tmp/iconbtn.ppm", 1);
    meow_ui_opts o = { 480, 720 };
    assert(meow_ui_init(&o) == 0);
    meow_ui_activity_push(7);           /* owner 对齐：IconButton 绑定 active=7 */
    meow_theme_set_mode(MEOW_THEME_DARK);

    /* size=64 → 外接框 (100,100,64,64) → 圆心 (132,132) r=32 */
    meow_widget *ic = meow_iconbtn_create(100, 100, 64, MEOW_ICON_PLAY_ARROW);
    assert(ic != NULL);

    /* ============ I1 圆形命中 ============ */
    printf("I1 circular hit\n");
    CHECK(meow_widget_hit(ic, 132, 132), "center hits");
    CHECK(meow_widget_hit(ic, 100, 132), "left edge (boundary) hits");
    CHECK(meow_widget_hit(ic, 132, 100), "top edge (boundary) hits");
    CHECK(!meow_widget_hit(ic, 100, 100), "corner (dist>r) MISSES (rect would hit)");
    CHECK(!meow_widget_hit(ic, 132, 165), "below center (dist 33>32) MISSES");

    /* ============ I2 owner 闸门：切 active 后不命中 ============ */
    printf("I2 owner gate\n");
    meow_ui_activity_push(8);           /* 换 active：original owner=7 ≠ active=8 */
    CHECK(!meow_widget_hit(ic, 132, 132), "non-active owner -> MISS (gate)");
    meow_ui_activity_pop();             /* 回 active=7 */
    CHECK(meow_widget_hit(ic, 132, 132), "back to active -> hits");
    /* enabled 闸门 */
    meow_widget_set_enabled(ic, 0);
    CHECK(!meow_widget_hit(ic, 132, 132), "disabled -> MISS");
    meow_widget_set_enabled(ic, 1);
    CHECK(meow_widget_hit(ic, 132, 132), "enabled -> hits");

    /* ============ I3 按压态视觉（状态机位 + 禁用变暗） ============
     * 采样点选 (162,132)：圆内 (r=30<32) 但超出图标 ink 右缘（约 x≤148）——取的是圆形底色，
     * 而非图标墨色（圆心为图标覆盖，不适合测底色 tint）。 */
    printf("I3 pressed visual (state machine / disabled)\n");
    const meow_theme *th = meow_theme_get();
    meow_ui_clear(th->bg);
    unsigned short p_bg = px565_at(100, 100);   /* 空屏角部 = 页面底色 */
    meow_widget_set_state(ic, MEOW_WS_PRESSED, 0);   /* 未按 */
    meow_widget_draw(ic);
    unsigned short p_idle = px565_at(162, 132);
    meow_widget_set_state(ic, MEOW_WS_PRESSED, 1);   /* 按下 */
    meow_widget_draw(ic);
    unsigned short p_press = px565_at(162, 132);
    CHECK(p_press != p_idle, "pressed circle-bg pixel differs from idle (tint layer)");
    /* 禁用：向灰变暗，圆 bg 应更接近 onSurface 混合（与 idle 不同且更亮/更灰） */
    meow_widget_set_state(ic, MEOW_WS_PRESSED, 0);
    meow_widget_set_enabled(ic, 0);
    meow_widget_draw(ic);
    unsigned short p_dis = px565_at(162, 132);
    CHECK(p_dis != p_idle, "disabled circle-bg pixel differs from idle (dim)");
    meow_widget_set_enabled(ic, 1);
    /* 角部（圆外）不应出现圆形底色：等于页面底色（圆形命中/填充不外溢） */
    meow_widget_draw(ic);
    CHECK(px565_at(100, 100) == p_bg, "corner (outside circle) = page bg (no stray fill)");

    /* ============ I4 实时按压（meow_input_touch 注入） ============ */
    printf("I4 live press via input touch\n");
    meow_widget_set_state(ic, MEOW_WS_PRESSED, 0);
    meow_ui_clear(th->bg);
    meow_widget_draw(ic);
    unsigned short q_idle = px565_at(162, 132);
    meow_input_touch_set(1, 132, 132, 0);   /* 按在圆心 */
    meow_widget_draw(ic);
    unsigned short q_live = px565_at(162, 132);
    CHECK(q_live != q_idle, "live touch press -> circle bg brightens");
    meow_input_touch_set(0, 0, 0, 0);       /* 释放 */
    meow_widget_draw(ic);
    CHECK(px565_at(162, 132) == q_idle, "release -> circle bg restores");

    meow_widget_free(ic);
    meow_ui_activity_pop();
    meow_ui_shutdown();
    printf(g_fail ? "\nRESULT: %d FAIL(S)\n" : "\nRESULT: ALL PASS\n", g_fail);
    return g_fail;
}