added icons to all dialogs

lib/screens/metering/components/shared/readings_container/components/animated_dialog_picker/components/dialog_picker/widget_picker_dialog.dart

@@ -6,6 +6,7 @@ typedef DialogPickerItemTitleBuilder<T> = Widget Function(BuildContext context,
 typedef DialogPickerItemTrailingBuilder<T> = Widget? Function(T selected, T value);
 
 class DialogPicker<T> extends StatefulWidget {
+  final IconData icon;
   final String title;
   final String? subtitle;
   final T initialValue;
@@ -16,6 +17,7 @@ class DialogPicker<T> extends StatefulWidget {
   final ValueChanged onSelect;
 
   const DialogPicker({
+    required this.icon,
     required this.title,
     this.subtitle,
     required this.initialValue,
@@ -45,27 +47,38 @@ class _DialogPickerState<T> extends State<DialogPicker<T>> {
   @override
   Widget build(BuildContext context) {
     return Column(
+      crossAxisAlignment: CrossAxisAlignment.stretch,
+      children: [
+        Column(
           crossAxisAlignment: CrossAxisAlignment.stretch,
           children: [
             Padding(
               padding: Dimens.dialogTitlePadding,
-          child: Column(
+              child: Icon(widget.icon),
-            children: [
+            ),
-              Text(
+            Padding(
+              padding: Dimens.dialogIconTitlePadding,
+              child: Text(
                 widget.title,
                 style: Theme.of(context).textTheme.headlineSmall!,
                 textAlign: TextAlign.center,
               ),
-              if (widget.subtitle != null) ...[
+            ),
-                const SizedBox(height: Dimens.grid16),
+            if (widget.subtitle != null)
-                Text(
+              Padding(
+                padding: const EdgeInsets.fromLTRB(
+                  Dimens.paddingL,
+                  0,
+                  Dimens.paddingL,
+                  Dimens.paddingM,
+                ),
+                child: Text(
                   widget.subtitle!,
                   style: Theme.of(context).textTheme.bodyMedium!,
                   textAlign: TextAlign.center,
                 ),
-              ]
-            ],
               ),
+          ],
         ),
         const Divider(),
         Expanded(

lib/screens/metering/components/shared/readings_container/components/animated_dialog_picker/widget_picker_dialog_animated.dart

@@ -5,6 +5,7 @@ import 'components/dialog_picker/widget_picker_dialog.dart';
 
 class AnimatedDialogPicker<T> extends StatelessWidget {
   final _key = GlobalKey<AnimatedDialogState>();
+  final IconData icon;
   final String title;
   final String? subtitle;
   final T selectedValue;
@@ -15,6 +16,7 @@ class AnimatedDialogPicker<T> extends StatelessWidget {
   final Widget closedChild;
 
   AnimatedDialogPicker({
+    required this.icon,
     required this.title,
     this.subtitle,
     required this.selectedValue,
@@ -32,6 +34,7 @@ class AnimatedDialogPicker<T> extends StatelessWidget {
       key: _key,
       closedChild: closedChild,
       openedChild: DialogPicker<T>(
+        icon: icon,
         title: title,
         subtitle: subtitle,
         initialValue: selectedValue,

lib/screens/metering/components/shared/readings_container/widget_container_readings.dart

@@ -106,6 +106,7 @@ class _EquipmentProfilePicker extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return AnimatedDialogPicker<EquipmentProfileData>(
+      icon: Icons.camera,
       title: S.of(context).equipmentProfile,
       selectedValue: EquipmentProfile.of(context),
       values: EquipmentProfiles.of(context),
@@ -137,6 +138,7 @@ class _FilmPicker extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return AnimatedDialogPicker<Film>(
+      icon: Icons.camera_roll,
       title: S.of(context).film,
       selectedValue: selectedValue,
       values: values,
@@ -166,6 +168,7 @@ class _IsoValuePicker extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return AnimatedDialogPicker<IsoValue>(
+      icon: Icons.iso,
       title: S.of(context).iso,
       subtitle: S.of(context).filmSpeed,
       selectedValue: selectedValue,
@@ -200,6 +203,7 @@ class _NdValuePicker extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return AnimatedDialogPicker<NdValue>(
+      icon: Icons.filter_b_and_w,
       title: S.of(context).nd,
       subtitle: S.of(context).ndFilterFactor,
       selectedValue: selectedValue,

lib/screens/settings/components/general/components/language/widget_list_tile_language.dart

@@ -18,6 +18,7 @@ class LanguageListTile extends StatelessWidget {
         showDialog<SupportedLocale>(
           context: context,
           builder: (_) => DialogPicker<SupportedLocale>(
+            icon: Icons.language,
             title: S.of(context).chooseLanguage,
             selectedValue: context.read<SupportedLocale>(),
             values: SupportedLocale.values,

lib/screens/settings/components/metering/components/calibration/components/calibration_dialog/widget_dialog_calibration.dart

@@ -17,7 +17,8 @@ class CalibrationDialog extends StatelessWidget {
   Widget build(BuildContext context) {
     final bool hasLightSensor = context.read<Environment>().hasLightSensor;
     return AlertDialog(
-      titlePadding: Dimens.dialogTitlePadding,
+      icon: const Icon(Icons.settings_brightness),
+      titlePadding: Dimens.dialogIconTitlePadding,
       title: Text(S.of(context).calibration),
       contentPadding: const EdgeInsets.symmetric(horizontal: Dimens.paddingL),
       content: SingleChildScrollView(

lib/screens/settings/components/metering/components/equipment_profiles/components/equipment_profile_screen/components/equipment_profile_name_dialog/widget_dialog_equipment_profile_name.dart

@@ -1,5 +1,6 @@
 import 'package:flutter/material.dart';
 import 'package:lightmeter/generated/l10n.dart';
+import 'package:lightmeter/res/dimens.dart';
 
 class EquipmentProfileNameDialog extends StatefulWidget {
   final String initialValue;
@@ -22,6 +23,8 @@ class _EquipmentProfileNameDialogState extends State<EquipmentProfileNameDialog>
   @override
   Widget build(BuildContext context) {
     return AlertDialog(
+      icon: const Icon(Icons.edit),
+      titlePadding: Dimens.dialogIconTitlePadding,
       title: Text(S.of(context).equipmentProfileName),
       content: TextField(
         autofocus: true,

lib/screens/settings/components/metering/components/fractional_stops/widget_list_tile_fractional_stops.dart

@@ -18,6 +18,7 @@ class StopTypeListTile extends StatelessWidget {
         showDialog<StopType>(
           context: context,
           builder: (_) => DialogPicker<StopType>(
+            icon: Icons.straighten,
             title: S.of(context).showFractionalStops,
             selectedValue: context.read<StopType>(),
             values: StopType.values,

lib/screens/settings/components/shared/dialog_picker.dart/widget_dialog_picker.dart

@@ -3,12 +3,14 @@ import 'package:lightmeter/generated/l10n.dart';
 import 'package:lightmeter/res/dimens.dart';
 
 class DialogPicker<T> extends StatefulWidget {
+  final IconData icon;
   final String title;
   final T selectedValue;
   final List<T> values;
   final String Function(BuildContext context, T value) titleAdapter;
 
   const DialogPicker({
+    required this.icon,
     required this.title,
     required this.selectedValue,
     required this.values,
@@ -26,7 +28,8 @@ class _DialogPickerState<T> extends State<DialogPicker<T>> {
   @override
   Widget build(BuildContext context) {
     return AlertDialog(
-      titlePadding: Dimens.dialogTitlePadding,
+      icon: Icon(widget.icon),
+      titlePadding: Dimens.dialogIconTitlePadding,
       title: Text(widget.title),
       contentPadding: EdgeInsets.zero,
       content: Column(

lib/screens/settings/components/theme/components/primary_color/components/primary_color_picker_dialog/widget_dialog_picker_primary_color.dart

@@ -24,7 +24,8 @@ class _PrimaryColorDialogPickerState extends State<PrimaryColorDialogPicker> {
   @override
   Widget build(BuildContext context) {
     return AlertDialog(
-      titlePadding: Dimens.dialogTitlePadding,
+      icon: const Icon(Icons.palette),
+      titlePadding: Dimens.dialogIconTitlePadding,
       title: Text(S.of(context).choosePrimaryColor),
       content: SizedBox(
           height: Dimens.grid48,

lib/screens/settings/components/theme/components/theme_type/widget_list_tile_theme_type.dart

@@ -18,6 +18,7 @@ class ThemeTypeListTile extends StatelessWidget {
         showDialog<ThemeType>(
           context: context,
           builder: (_) => DialogPicker<ThemeType>(
+            icon: Icons.brightness_6,
             title: S.of(context).chooseTheme,
             selectedValue: context.read<ThemeType>(),
             values: ThemeType.values,