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modern-qt/utility/wrapper/widget.hh
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177
modern-qt/utility/wrapper/widget.hh
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#pragma once
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#include "modern-qt/utility/wrapper/common.hh"
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#include "modern-qt/utility/wrapper/property.hh"
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#include <qgraphicseffect.h>
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#include <qscreen.h>
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namespace creeper::widget::pro {
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using Token = common::Token<QWidget>;
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using MinimumWidth = SetterProp<Token, int, [](auto& self, int v) { self.setMinimumWidth(v); }>;
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using MaximumWidth = SetterProp<Token, int, [](auto& self, int v) { self.setMaximumWidth(v); }>;
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using FixedWidth = SetterProp<Token, int, [](auto& self, int v) { self.setFixedWidth(v); }>;
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using MinimumHeight = SetterProp<Token, int, [](auto& self, int v) { self.setMinimumHeight(v); }>;
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using MaximumHeight = SetterProp<Token, int, [](auto& self, int v) { self.setMaximumHeight(v); }>;
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using FixedHeight = SetterProp<Token, int, [](auto& self, int v) { self.setFixedHeight(v); }>;
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using LayoutDirection = SetterProp<Token, Qt::LayoutDirection,
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[](auto& self, Qt::LayoutDirection v) { self.setLayoutDirection(v); }>;
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using BackgroundRole = SetterProp<Token, QPalette::ColorRole,
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[](auto& self, QPalette::ColorRole v) { self.setBackgroundRole(v); }>;
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using ForegroundRole = SetterProp<Token, QPalette::ColorRole,
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[](auto& self, QPalette::ColorRole v) { self.setForegroundRole(v); }>;
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using ClearMask = SetterProp<Token, std::nullptr_t, [](auto& self, auto) { self.clearMask(); }>;
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using GraphicsEffect = SetterProp<Token, QGraphicsEffect*,
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[](auto& self, QGraphicsEffect* v) { self.setGraphicsEffect(v); }>;
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struct WindowFlag : Token {
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Qt::WindowType type;
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bool on;
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explicit WindowFlag(Qt::WindowType type, bool on = true)
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: type { type }
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, on { on } { }
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void apply(QWidget& widget) const { widget.setWindowFlag(type, on); }
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};
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using WindowFlags = SetterProp<Token, Qt::WindowFlags,
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[](auto& self, Qt::WindowFlags v) { self.setWindowFlags(v); }>;
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using WindowOpacity =
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SetterProp<Token, double, [](auto& self, double v) { self.setWindowOpacity(v); }>;
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using Parent = SetterProp<Token, QWidget*, [](auto& self, QWidget* v) { self.setParent(v); }>;
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using Child = SetterProp<Token, QWidget*, [](auto& self, QWidget* v) { v->setParent(&self); }>;
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using MinimumSize =
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DerivedProp<Token, QSize, [](auto& self, const QSize& v) { self.setMinimumSize(v); }>;
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using MaximumSize =
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DerivedProp<Token, QSize, [](auto& self, const QSize& v) { self.setMaximumSize(v); }>;
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using SizeIncrement =
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DerivedProp<Token, QSize, [](auto& self, const QSize& v) { self.setSizeIncrement(v); }>;
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using BaseSize = DerivedProp<Token, QSize, [](auto& self, const QSize& v) { self.setBaseSize(v); }>;
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using FixedSize =
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DerivedProp<Token, QSize, [](auto& self, const QSize& v) { self.setFixedSize(v); }>;
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using Font = DerivedProp<Token, QFont, [](auto& self, const QFont& v) { self.setFont(v); }>;
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using BitmapMask =
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DerivedProp<Token, QBitmap, [](auto& self, const QBitmap& v) { self.setMask(v); }>;
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using RegionMask =
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DerivedProp<Token, QRegion, [](auto& self, const QRegion& v) { self.setMask(v); }>;
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using WindowIcon =
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DerivedProp<Token, QIcon, [](auto& self, const QIcon& v) { self.setWindowIcon(v); }>;
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using WindowIconText =
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DerivedProp<Token, QString, [](auto& self, const QString& v) { self.setWindowIconText(v); }>;
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using WindowRole =
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DerivedProp<Token, QString, [](auto& self, const QString& v) { self.setWindowRole(v); }>;
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using WindowFilePath =
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DerivedProp<Token, QString, [](auto& self, const QString& v) { self.setWindowFilePath(v); }>;
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using ToolTip =
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DerivedProp<Token, QString, [](auto& self, const QString& tip) { self.setToolTip(tip); }>;
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struct MoveCenter : Token {
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auto apply(QWidget& self) const noexcept -> void {
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const auto screen = self.screen();
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const auto screen_geometry = screen->availableGeometry();
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const auto screen_width = screen_geometry.width();
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const auto screen_height = screen_geometry.height();
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const auto widget_geometry = self.geometry();
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const auto widget_width = widget_geometry.width();
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const auto widget_height = widget_geometry.height();
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const auto x = (screen_width - widget_width) / 2;
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const auto y = (screen_height - widget_height) / 2;
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self.move(x, y);
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}
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};
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struct SizePolicy : Token {
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QSizePolicy::Policy v, h;
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explicit SizePolicy(QSizePolicy::Policy policy)
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: v { policy }
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, h { policy } { }
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explicit SizePolicy(QSizePolicy::Policy v, QSizePolicy::Policy h)
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: v { v }
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, h { h } { }
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void apply(QWidget& self) const { self.setSizePolicy(h, v); }
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};
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/// @note 该属性本质是转发构造，有 new 的行为
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template <class T>
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struct Layout : Token {
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T* layout_;
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explicit Layout(T* pointer) noexcept
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requires std::convertible_to<decltype(pointer), QLayout*>
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: layout_ { pointer } { }
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explicit Layout(auto&&... args)
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requires std::constructible_from<T, decltype(args)...>
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: layout_ { new T { std::forward<decltype(args)>(args)... } } { }
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void apply(QWidget& widget) const { widget.setLayout(layout_); }
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};
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/// @brief 绑定裸指针，为了避免赋值语句
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///
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/// 一般情况下需要绑定指针：
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///
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/// 假设下面是一个 layout 的内部
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/// clang-format 会在下面的赋值符号后换行
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/// @code
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/// auto widget = (Widget*)nullptr;
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/// ......
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/// { widget =
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/// new Widget {
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/// ......
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/// } },
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/// ......
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/// @endcode
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///
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/// 利用赋值语句的返回特性将该组件返回给 layout，同时完成赋值，
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/// 但这样会多一层缩进，为保证构造配置的简洁和同一，可以使用该包装：
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///
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/// @code
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/// ......
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/// { new Widget {
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/// pro::Bind { widget },
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/// } },
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/// ......
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/// @endcode
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///
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/// @tparam Final 需要绑定的组件类型（自动推导，无需显式指定）
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///
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/// @date 2025-06-19
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template <class Final>
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struct Bind : Token {
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Final*& widget;
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explicit Bind(Final*& widget) noexcept
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requires std::is_pointer<Final*>::value
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: widget(widget) { }
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void apply(Final& self) const noexcept { widget = &self; }
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};
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// 传入一个方法用来辅助构造，在没有想要的接口时用这个吧
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template <typename Lambda>
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struct Apply : Token {
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Lambda lambda;
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explicit Apply(Lambda lambda) noexcept
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: lambda { lambda } { }
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auto apply(auto& self) const noexcept -> void {
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if constexpr (std::invocable<Lambda>) lambda();
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if constexpr (std::invocable<Lambda, decltype(self)>) lambda(self);
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}
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};
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template <typename T>
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concept trait = std::derived_from<T, Token>;
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CREEPER_DEFINE_CHECKER(trait);
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}
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