page_theme.dart
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/*
* Copyright (C) 2017, David PHAM-VAN <dev.nfet.net@gmail.com>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import 'package:meta/meta.dart';
import 'package:pdf/pdf.dart';
import 'geometry.dart';
import 'page.dart';
import 'text.dart';
import 'theme.dart';
@immutable
class PageTheme {
const PageTheme({
PdfPageFormat? pageFormat,
this.buildBackground,
this.buildForeground,
this.theme,
PageOrientation? orientation,
EdgeInsets? margin,
this.clip = false,
this.textDirection,
}) : pageFormat = pageFormat ?? PdfPageFormat.standard,
orientation = orientation ?? PageOrientation.natural,
_margin = margin;
final PdfPageFormat pageFormat;
final PageOrientation orientation;
final EdgeInsets? _margin;
final BuildCallback? buildBackground;
final BuildCallback? buildForeground;
final ThemeData? theme;
final bool clip;
final TextDirection? textDirection;
bool get mustRotate =>
(orientation == PageOrientation.landscape &&
pageFormat.height > pageFormat.width) ||
(orientation == PageOrientation.portrait &&
pageFormat.width > pageFormat.height);
EdgeInsets? get margin {
if (_margin != null) {
if (mustRotate) {
return EdgeInsets.fromLTRB(
_margin!.bottom, _margin!.left, _margin!.top, _margin!.right);
} else {
return _margin;
}
}
if (mustRotate) {
return EdgeInsets.fromLTRB(pageFormat.marginBottom, pageFormat.marginLeft,
pageFormat.marginTop, pageFormat.marginRight);
} else {
return EdgeInsets.fromLTRB(pageFormat.marginLeft, pageFormat.marginTop,
pageFormat.marginRight, pageFormat.marginBottom);
}
}
PageTheme copyWith({
PdfPageFormat? pageFormat,
BuildCallback? buildBackground,
BuildCallback? buildForeground,
ThemeData? theme,
PageOrientation? orientation,
EdgeInsets? margin,
bool? clip,
TextDirection? textDirection,
}) =>
PageTheme(
pageFormat: pageFormat ?? this.pageFormat,
buildBackground: buildBackground ?? this.buildBackground,
buildForeground: buildForeground ?? this.buildForeground,
theme: theme ?? this.theme,
orientation: orientation ?? this.orientation,
margin: margin ?? this.margin,
clip: clip ?? this.clip,
textDirection: textDirection ?? this.textDirection,
);
}