From e5cd74926f1de202a979f3c82dc948883d211bbf Mon Sep 17 00:00:00 2001
From: Nyeogmi <economicsbat@gmail.com>
Date: Sat, 9 Sep 2023 18:58:31 -0700
Subject: [PATCH] Only use exact pixel scales again

---
 lib/game.dart             |  2 +-
 lib/terminal_painter.dart | 30 +++++++++++++++++++++++++++---
 2 files changed, 28 insertions(+), 4 deletions(-)

diff --git a/lib/game.dart b/lib/game.dart
index 5152856..1ab3152 100644
--- a/lib/game.dart
+++ b/lib/game.dart
@@ -8,5 +8,5 @@ void main() async {
       .bg(Palette.subtitle)
       .fg(Palette.defaultBg)
       .big()
-      .puts("BEWARE OF THE BAT!");
+      .puts("BEWARE OF THE BAT!\nA cool bat.");
 }
diff --git a/lib/terminal_painter.dart b/lib/terminal_painter.dart
index 612ad4d..40cd2e0 100644
--- a/lib/terminal_painter.dart
+++ b/lib/terminal_painter.dart
@@ -1,3 +1,4 @@
+import 'dart:developer';
 import 'dart:ui' as ui;
 import 'dart:ui';
 
@@ -32,9 +33,32 @@ class TerminalCustomPainter extends CustomPainter {
     var image = pr
         .endRecording()
         // Renderer does something bizarre if I don't multiply by something greater than 1
-        .toImageSync(cellW * Terminal.width * 2, cellH * Terminal.height * 2);
-    canvas.drawImageRect(image, const Offset(0, 0) & smallSize,
-        const Offset(0, 0) & size, Paint()..filterQuality = FilterQuality.none);
+        .toImageSync(cellW * Terminal.width * 1, cellH * Terminal.height * 1);
+
+    double x0, y0, xSz, ySz;
+    (x0, y0) = (0.0, 0.0);
+    (xSz, ySz) = (size.width, size.height);
+    for (var multiplierBase = 16.0; multiplierBase >= 1; multiplierBase -= 1) {
+      final multiplier = multiplierBase / scalingFactor;
+      final candidateXSz = (multiplier * cellW * Terminal.width).toDouble();
+      final candidateYSz = (multiplier * cellH * Terminal.height).toDouble();
+
+      if (candidateXSz <= size.width && candidateYSz <= size.height) {
+        xSz = candidateXSz;
+        ySz = candidateYSz;
+        x0 = (size.width - xSz) / 2;
+        y0 = (size.height - ySz) / 2;
+        x0 = (x0 * scalingFactor).floor() / scalingFactor;
+        y0 = (y0 * scalingFactor).floor() / scalingFactor;
+        break;
+      }
+    }
+    log("$x0, $y0, $xSz, $ySz");
+    canvas.drawImageRect(
+        image,
+        const Offset(0, 0) & smallSize,
+        Offset(x0, y0) & Size(xSz, ySz),
+        Paint()..filterQuality = FilterQuality.none);
   }
 
   void virtualPaint(Canvas canvas, Size size) {