jiapuapp/components/PageHeader.vue

<!-- 公共组件：根页朱砂页头与普通返回页头；根页背景图层由统一基础资产提供。 -->
<template>
  <view class="page-header-slot" :class="{ 'page-header-slot--root': root }">
  <view class="page-header" :class="{ 'page-header--root': root }">
    <!-- 根页头部使用不透明朱砂底图与透明祠堂线稿两层完整资产。 -->
    <image
      v-if="root"
      class="header-texture"
      src="/static/assets/foundation/opaque/root-header-cinnabar.jpg"
      mode="scaleToFill"
    />
    <image
      v-if="root"
      class="header-hall"
      src="/static/assets/foundation/transparent/root-header-hall.png"
      mode="aspectFit"
    />
    <view class="header-side header-side--left">
      <button
        v-if="root"
        class="header-icon-button"
        aria-label="返回首页"
        @click="$emit('brand')"
      >
        <image
          class="header-logo"
          src="/static/assets/foundation/transparent/brand-seal.png"
          mode="aspectFit"
        />
      </button>
      <button
        v-else
        class="header-back"
        aria-label="返回上一页"
        hover-class="header-back--pressed"
        @click="goBack"
      >
        <image
          class="header-back__icon"
          src="/static/assets/foundation/transparent/chevron-right.png"
          mode="aspectFit"
        />
      </button>
    </view>

    <text class="header-title">{{ title }}</text>

    <view class="header-side header-side--right">
      <button
        v-if="root"
        class="header-icon-button header-notice"
        aria-label="打开消息中心"
        @click="$emit('notice')"
      >
        <image
          class="header-notice-icon"
          src="/static/assets/foundation/transparent/notice.png"
          mode="aspectFit"
        />
        <view v-if="unreadCount > 0" class="notice-dot"></view>
      </button>
      <button v-else class="header-action" :disabled="!action" @click="$emit('action')">{{
        action
      }}</button>
    </view>
  </view>
  </view>
</template>

<script setup>
const props = defineProps({
  title: { type: String, required: true },
  action: { type: String, default: "" },
  root: { type: Boolean, default: false },
  unreadCount: { type: Number, default: 0 },
  fallbackUrl: { type: String, default: "/pages/genealogy/g01-my-genealogies" },
  customBack: { type: Boolean, default: false },
});

const emit = defineEmits(["brand", "notice", "action", "back"]);

const goBack = () => {
  if (props.customBack) {
    emit("back");
    return;
  }
  const stack = getCurrentPages();
  if (stack.length > 1) {
    uni.navigateBack();
    return;
  }
  uni.reLaunch({ url: props.fallbackUrl });
};
</script>

<style scoped lang="scss">
.page-header-slot {
  height: calc(104rpx + var(--status-bar-height, 0px));
  flex: none;
}

.page-header-slot--root {
  height: calc(124rpx + var(--status-bar-height, 0px));
}

.page-header {
  position: fixed;
  top: 0;
  right: 0;
  left: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  height: calc(104rpx + var(--status-bar-height, 0px));
  padding: 0 24rpx;
  padding-top: var(--status-bar-height, 0px);
  box-sizing: border-box;
  background: $brand-red;
  color: #fff9ed;
  transform: translateZ(0);
}

.page-header--root {
  height: calc(124rpx + var(--status-bar-height, 0px));
  padding-top: var(--status-bar-height, 0px);
  background-color: #b52e22;
  overflow: hidden;
}

.header-texture {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.header-hall {
  position: absolute;
  bottom: -2rpx;
  left: -48rpx;
  z-index: 1;
  width: 476rpx;
  height: 166rpx;
  opacity: 0.29;
  pointer-events: none;
}

.page-header--root .header-side,
.page-header--root .header-title {
  z-index: 2;
}

.header-side {
  display: flex;
  width: 120rpx;
  min-height: 88rpx;
  align-items: center;
}

.header-side--left {
  justify-content: flex-start;
}
.header-side--right {
  justify-content: flex-end;
}

.header-icon-button {
  display: grid;
  width: 88rpx;
  height: 88rpx;
  place-items: center;
  margin: 0;
  padding: 0;
  border: 0;
  background: transparent;
  line-height: normal;
}
.header-icon-button::after,
.header-back::after,
.header-action::after {
  border: 0;
}

.header-logo {
  width: 66rpx;
  height: 66rpx;
}
.header-notice-icon {
  width: 48rpx;
  height: 48rpx;
}

.header-logo,
.header-notice-icon,
.notice-dot {
  grid-area: 1 / 1;
}

.notice-dot {
  align-self: start;
  justify-self: end;
  width: 14rpx;
  height: 14rpx;
  margin-top: 15rpx;
  margin-right: 13rpx;
  border: 2rpx solid $brand-red;
  border-radius: 50%;
  background: #fff9ed;
}

.header-action {
  width: 100%;
  margin: 0;
  padding: 0;
  border: 0;
  background: transparent;
  font-size: 27rpx;
  line-height: normal;
}

.header-back {
  display: flex;
  width: 88rpx;
  height: 88rpx;
  align-items: center;
  justify-content: flex-start;
  margin: 0;
  padding: 0;
  border: 0;
  background: transparent;
  line-height: normal;
}
.header-back__icon {
  width: 42rpx;
  height: 42rpx;
  filter: brightness(0) invert(1);
  transform: scaleX(-1);
}
.header-back--pressed {
  opacity: 0.62;
}
.header-action {
  color: #ffe3a7;
  text-align: right;
}

.header-title {
  flex: 1;
  overflow: hidden;
  color: #fff9ed;
  font-family: serif;
  font-size: 35rpx;
  font-weight: 700;
  letter-spacing: 4rpx;
  text-align: center;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.page-header--root .header-title {
  color: #ffe3a7;
  font-family: "STKaiti", "KaiTi", serif;
  font-size: 48rpx;
  letter-spacing: 5rpx;
  transform: translateY(2rpx);
}

.page-header--root .header-logo {
  width: 80rpx;
  height: 80rpx;
  transform: translate(-6rpx, -6rpx);
}

.page-header--root .header-notice {
  transform: translateY(4rpx);
}
</style>