refactor: restructure components and assets

app/components/Home/TopScreen/Background.vue

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+<script setup lang="ts">
+const backgroundImage = useTemplateRef("backgroundImage");
+
+useRender((ctx) => {
+  if (!backgroundImage.value) return;
+
+  ctx.drawImage(backgroundImage.value, 0, 0);
+});
+</script>
+
+<template>
+  <img
+    ref="backgroundImage"
+    src="/assets/images/home/top-screen/background.png"
+    hidden
+  />
+</template>

app/components/Home/TopScreen/Calendar.vue

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+<script setup lang="ts">
+// NOTE: calendar background is handled by TopScreenBackground
+
+const lastRowImage = useTemplateRef("lastRowImage");
+const daySelectorImage = useTemplateRef("daySelectorImage");
+
+useRender((ctx) => {
+  if (!lastRowImage.value || !daySelectorImage.value) return;
+
+  ctx.fillStyle = "black";
+  ctx.font = "7px NDS7";
+
+  const CALENDAR_COLS = 7;
+  const CALENDAR_ROWS = 5;
+  const CALENDAR_LEFT = 128;
+  const CALENDAR_TOP = 64;
+
+  ctx.fillStyle = "#343434";
+
+  const now = new Date();
+  const year = now.getFullYear();
+  const month = now.getMonth();
+
+  const firstDay = new Date(year, month, 1).getDay();
+  const daysInMonth = new Date(year, month + 1, 0).getDate();
+
+  const extraRow = CALENDAR_COLS * CALENDAR_ROWS - daysInMonth - firstDay < 0;
+  if (extraRow) {
+    ctx.drawImage(lastRowImage.value, CALENDAR_LEFT - 3, CALENDAR_TOP + 79);
+  }
+
+  for (let col = 0; col < CALENDAR_ROWS + (extraRow ? 1 : 0); col += 1) {
+    for (let row = 0; row < CALENDAR_COLS; row += 1) {
+      const cellIndex = col * CALENDAR_COLS + row;
+      const day = cellIndex - firstDay + 1;
+
+      if (day > 0 && day <= daysInMonth) {
+        const dayText = day.toString();
+        const { actualBoundingBoxRight: width } = ctx.measureText(dayText);
+
+        const cellLeft = CALENDAR_LEFT + row * 16;
+        const cellTop = CALENDAR_TOP + col * 16;
+
+        if (now.getDate() === day) {
+          ctx.drawImage(daySelectorImage.value, cellLeft, cellTop);
+        }
+
+        ctx.fillText(
+          dayText,
+          cellLeft + Math.floor((15 - width) / 2),
+          cellTop + 11,
+        );
+      }
+    }
+  }
+
+  ctx.fillStyle = "black";
+  ctx.font = "9px NDS9";
+  ctx.letterSpacing = "2px";
+
+  const timeText = `${month}/${year}`;
+  const { actualBoundingBoxRight: width } = ctx.measureText(timeText);
+
+  ctx.fillText(
+    timeText,
+    CALENDAR_LEFT + Math.floor((111 - width) / 2),
+    CALENDAR_TOP - 20,
+  );
+});
+</script>
+
+<template>
+  <img
+    ref="lastRowImage"
+    src="/assets/images/home/top-screen/calendar/last-row.png"
+    hidden
+  />
+  <img
+    ref="daySelectorImage"
+    src="/assets/images/home/top-screen/calendar/day-selector.png"
+    hidden
+  />
+</template>

app/components/Home/TopScreen/Clock.vue

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+<script setup lang="ts">
+const CENTER_X = 63;
+const CENTER_Y = 95;
+
+function drawLine(
+  ctx: CanvasRenderingContext2D,
+  x0: number,
+  y0: number,
+  x1: number,
+  y1: number,
+  width: number,
+) {
+  const dx = Math.abs(x1 - x0);
+  const dy = Math.abs(y1 - y0);
+  const sx = x0 < x1 ? 1 : -1;
+  const sy = y0 < y1 ? 1 : -1;
+  let err = dx - dy;
+
+  const drawThickPixel = (x: number, y: number) => {
+    const isVertical = dy > dx;
+
+    if (width === 1) {
+      ctx.fillRect(x, y, 1, 1);
+    } else if (isVertical) {
+      const offset = Math.floor((width - 1) / 2);
+      ctx.fillRect(x - offset, y, width, 1);
+    } else {
+      const offset = Math.floor((width - 1) / 2);
+      ctx.fillRect(x, y - offset, 1, width);
+    }
+  };
+
+  while (true) {
+    drawThickPixel(x0, y0);
+
+    if (x0 === x1 && y0 === y1) break;
+
+    const e2 = 2 * err;
+    if (e2 > -dy) {
+      err -= dy;
+      x0 += sx;
+    }
+    if (e2 < dx) {
+      err += dx;
+      y0 += sy;
+    }
+  }
+}
+
+useRender((ctx) => {
+  const now = new Date();
+
+  const renderHand = (
+    value: number,
+    color: string,
+    length: number,
+    width: number,
+  ) => {
+    const angle = value * Math.PI * 2 - Math.PI / 2;
+    const endX = Math.round(CENTER_X + Math.cos(angle) * length);
+    const endY = Math.round(CENTER_Y + Math.sin(angle) * length);
+    ctx.fillStyle = color;
+    drawLine(ctx, CENTER_X, CENTER_Y, endX, endY, width);
+  };
+
+  renderHand(now.getMinutes() / 60, "#797979", 30, 2);
+  renderHand(
+    now.getHours() / 12 + now.getMinutes() / 60 / 12,
+    "#797979",
+    23,
+    2,
+  );
+  renderHand(now.getSeconds() / 60, "#49db8a", 35, 2);
+
+  ctx.fillStyle = "#494949";
+  ctx.fillRect(CENTER_X - 2, CENTER_Y - 2, 5, 5);
+});
+</script>

app/components/Home/TopScreen/StatusBar.vue

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+<script setup lang="ts">
+const gbaDisplayImage = useTemplateRef("gbaDisplayImage");
+const startupModeImage = useTemplateRef("startupModeImage");
+const batteryImage = useTemplateRef("batteryImage");
+
+useRender((ctx) => {
+  if (!gbaDisplayImage.value || !startupModeImage.value || !batteryImage.value)
+    return;
+
+  const TEXT_Y = 11;
+
+  ctx.fillStyle = "#ffffff";
+  ctx.font = "7px NDS7";
+
+  // username
+  ctx.fillText("pihkaal", 3, TEXT_Y);
+
+  // time + date
+  const fillNumberCell = (value: number, cellX: number, offset: number) => {
+    const text = value.toFixed().padStart(2, "0");
+    const { actualBoundingBoxRight: width } = ctx.measureText(text);
+
+    const x = cellX * 16;
+    ctx.fillText(text, Math.floor(x + offset + (16 - width) / 2), TEXT_Y);
+  };
+
+  const now = new Date();
+
+  fillNumberCell(now.getHours(), 9, 1);
+  if (Math.floor(now.getMilliseconds() / 500) % 2 == 0) {
+    ctx.fillText(":", 159, TEXT_Y);
+  }
+  fillNumberCell(now.getMinutes(), 10, -1);
+
+  fillNumberCell(now.getDate(), 11, 1);
+  ctx.fillText("/", 190, TEXT_Y);
+  fillNumberCell(now.getMonth() + 1, 12, -1);
+
+  // icons
+  ctx.drawImage(gbaDisplayImage.value, 210, 2);
+  ctx.drawImage(startupModeImage.value, 226, 2);
+  ctx.drawImage(batteryImage.value, 242, 4);
+});
+</script>
+
+<template>
+  <img
+    ref="gbaDisplayImage"
+    src="/assets/images/home/top-screen/status-bar/gba-display.png"
+    hidden
+  />
+  <img
+    ref="startupModeImage"
+    src="/assets/images/home/top-screen/status-bar/startup-mode.png"
+    hidden
+  />
+  <img
+    ref="batteryImage"
+    src="/assets/images/home/top-screen/status-bar/battery.png"
+    hidden
+  />
+</template>

app/components/Home/TopScreen/TopScreen.vue

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+<template>
+  <Screen>
+    <HomeTopScreenBackground />
+    <HomeTopScreenCalendar />
+    <HomeTopScreenClock />
+    <HomeTopScreenStatusBar />
+
+    <slot />
+  </Screen>
+</template>