Implement storing print layout config

ubuntu-kr · Jul 9, 2024 · fffe2ef · fffe2ef
1 parent 421b739
commit fffe2ef
Showing 1 changed file with 60 additions and 16 deletions.
diff --git a/lib/settings/printLayout.dart b/lib/settings/printLayout.dart
@@ -6,6 +6,7 @@ import 'dart:io' show Platform;
 
 import 'package:flutter/material.dart';
 import 'package:flutter/rendering.dart';
+import 'package:shared_preferences/shared_preferences.dart';
 
 class PrintLayoutSettings extends StatefulWidget {
   const PrintLayoutSettings({Key? key}) : super(key: key);
@@ -14,12 +15,43 @@ class PrintLayoutSettings extends StatefulWidget {
 }
 
 class _PrintLayoutSettingsState extends State<PrintLayoutSettings> {
+  int printCanvasWidthMm = -1;
+  int printCanvasHeightMm = -1;
+  int printCanvasDpi = 203;
+  int printCanvasWidthPx = -1;
+  int printCanvasHeightPx = -1;
   @override
   void initState() {
     super.initState();
+    var prefs = SharedPreferences.getInstance();
+    prefs.then((SharedPreferences prefs) {
+      setState(() {
+        printCanvasWidthMm = prefs.getInt('printCanvasWidthMm') ?? 70;
+        printCanvasHeightMm = prefs.getInt('printCanvasHeightMm') ?? 70;
+        printCanvasDpi = prefs.getInt('printCanvasDpi') ?? 203;
+        printCanvasWidthPx = mmToPx(printCanvasWidthMm, printCanvasDpi);
+        printCanvasHeightPx = mmToPx(printCanvasHeightMm, printCanvasDpi);
+      });
+    });
     print('initState is called');
   }
 
+  int mmToPx(int mm, int dpi) {
+    return (mm * dpi) ~/ 25.4;
+  }
+
+  void savePrintLayout() async {
+    var prefs = await SharedPreferences.getInstance();
+    prefs.setInt('printCanvasWidthMm', printCanvasWidthMm);
+    prefs.setInt('printCanvasHeightMm', printCanvasHeightMm);
+    prefs.setInt('printCanvasDpi', printCanvasDpi);
+    var resultSnackBar = SnackBar(
+      content: Text(
+          "인쇄 레이아웃 저장됨: $printCanvasWidthMm mm * $printCanvasHeightMm mm ($printCanvasDpi DPI) -> $printCanvasWidthPx px * $printCanvasHeightPx px"),
+    );
+    ScaffoldMessenger.of(context).showSnackBar(resultSnackBar);
+  }
+
   @override
   Widget build(BuildContext context) {
     return Scaffold(
@@ -50,7 +82,14 @@ class _PrintLayoutSettingsState extends State<PrintLayoutSettings> {
                             border: OutlineInputBorder(),
                             labelText: '너비 (mm)',
                           ),
-                          onChanged: (value) => {},
+                          onChanged: (value) {
+                            setState(() {
+                              printCanvasWidthMm = int.parse(value);
+                              printCanvasWidthPx =
+                                  mmToPx(printCanvasWidthMm, printCanvasDpi);
+                            });
+                            savePrintLayout();
+                          },
                         ))),
                 ConstrainedBox(
                     constraints: BoxConstraints(maxWidth: 300),
@@ -63,7 +102,14 @@ class _PrintLayoutSettingsState extends State<PrintLayoutSettings> {
                             border: OutlineInputBorder(),
                             labelText: '높이 (mm)',
                           ),
-                          onChanged: (value) => {},
+                          onChanged: (value) {
+                            setState(() {
+                              printCanvasHeightMm = int.parse(value);
+                              printCanvasHeightPx =
+                                  mmToPx(printCanvasHeightMm, printCanvasDpi);
+                            });
+                            savePrintLayout();
+                          },
                         ))),
               ],
             ),
@@ -89,7 +135,16 @@ class _PrintLayoutSettingsState extends State<PrintLayoutSettings> {
                             border: OutlineInputBorder(),
                             labelText: '해상도 (DPI)',
                           ),
-                          onChanged: (value) => {},
+                          onChanged: (value) {
+                            setState(() {
+                              printCanvasDpi = int.parse(value);
+                              printCanvasWidthPx =
+                                  mmToPx(printCanvasWidthMm, printCanvasDpi);
+                              printCanvasHeightPx =
+                                  mmToPx(printCanvasHeightMm, printCanvasDpi);
+                            });
+                            savePrintLayout();
+                          },
                         ))),
               ],
             ),
@@ -98,19 +153,8 @@ class _PrintLayoutSettingsState extends State<PrintLayoutSettings> {
               children: [
                 Container(
                     padding: const EdgeInsets.all(16.0),
-                    child: OutlinedButton(
-                        onPressed: () async {
-                          var resultSnackBar = SnackBar(
-                            content: Text(
-                                "행사 관계자를 호출 하였습니다. Event staff has been called."),
-                          );
-                          ScaffoldMessenger.of(context)
-                              .showSnackBar(resultSnackBar);
-                        },
-                        child: Text(
-                          "설정 저장",
-                          style: TextStyle(fontSize: 20),
-                        ))),
+                    child: Text(
+                        "사용중인 설정: $printCanvasWidthMm mm * $printCanvasHeightMm mm ($printCanvasDpi DPI) -> $printCanvasWidthPx px * $printCanvasHeightPx px"))
               ],
             ),
           ],