118 lines
3.4 KiB
C++
118 lines
3.4 KiB
C++
#pragma once
|
||
|
||
#include "creeper-qt/utility/trait/widget.hh"
|
||
#include "creeper-qt/utility/wrapper/common.hh"
|
||
#include "creeper-qt/utility/wrapper/layout.hh"
|
||
#include "creeper-qt/utility/wrapper/property.hh"
|
||
|
||
#include <qboxlayout.h>
|
||
#include <qstackedlayout.h>
|
||
|
||
namespace creeper::linear::pro {
|
||
|
||
using Token = common::Token<QBoxLayout>;
|
||
|
||
struct SpacingItem : Token {
|
||
int size;
|
||
explicit SpacingItem(int p) { size = p; }
|
||
void apply(QBoxLayout& self) const { self.addSpacing(size); }
|
||
};
|
||
|
||
struct Stretch : Token {
|
||
int stretch;
|
||
explicit Stretch(int p) { stretch = p; }
|
||
void apply(QBoxLayout& self) const { self.addStretch(stretch); }
|
||
};
|
||
|
||
struct SpacerItem : Token {
|
||
QSpacerItem* spacer_item;
|
||
explicit SpacerItem(QSpacerItem* p) { spacer_item = p; }
|
||
void apply(QBoxLayout& self) const { self.addSpacerItem(spacer_item); }
|
||
};
|
||
|
||
/// @brief
|
||
/// 布局项包装器，用于声明式地将 Widget 或 Layout 添加到布局中
|
||
///
|
||
/// @tparam T
|
||
/// 被包装的组件类型，需满足可转换为 QWidget* 或 QLayout*，不需
|
||
/// 要显式指定，由构造参数推倒
|
||
///
|
||
/// @note
|
||
/// Item 提供统一的接口用于在布局中插入控件或子布局，
|
||
/// 支持多种构造方式，包括直接传入指针或通过参数构造新对象。
|
||
/// 通过 LayoutMethod 可指定拉伸因子和对齐方式，
|
||
/// 在布局应用时自动选择 addWidget 或 addLayout，
|
||
/// 实现非侵入式的布局声明式封装。
|
||
///
|
||
/// 示例用途：
|
||
/// linear::pro::Item<Widget> {
|
||
/// { 0, Qt::AlignHCenter } // stretch, and alignment, optional
|
||
/// ...
|
||
/// };
|
||
///
|
||
template <item_trait T>
|
||
struct Item : Token {
|
||
struct LayoutMethod {
|
||
int stretch = 0;
|
||
Qt::Alignment align = {};
|
||
} method;
|
||
|
||
T* item_pointer = nullptr;
|
||
|
||
explicit Item(const LayoutMethod& method, T* pointer) noexcept
|
||
: item_pointer { pointer }
|
||
, method { method } { }
|
||
|
||
explicit Item(T* pointer) noexcept
|
||
: item_pointer { pointer } { }
|
||
|
||
explicit Item(const LayoutMethod& method, auto&&... args) noexcept
|
||
requires std::constructible_from<T, decltype(args)...>
|
||
: item_pointer { new T { std::forward<decltype(args)>(args)... } }
|
||
, method(method) { }
|
||
|
||
explicit Item(auto&&... args) noexcept
|
||
requires std::constructible_from<T, decltype(args)...>
|
||
: item_pointer { new T { std::forward<decltype(args)>(args)... } } { }
|
||
|
||
void apply(linear_trait auto& layout) const {
|
||
if constexpr (widget_trait<T>) layout.addWidget(item_pointer, method.stretch, method.align);
|
||
if constexpr (layout_trait<T>) layout.addLayout(item_pointer, method.stretch);
|
||
}
|
||
};
|
||
|
||
template <typename T>
|
||
concept trait = std::derived_from<T, Token>;
|
||
|
||
CREEPER_DEFINE_CHECKER(trait);
|
||
using namespace layout::pro;
|
||
}
|
||
|
||
namespace creeper {
|
||
|
||
template <class T>
|
||
using BoxLayout = Declarative<T, CheckerOr<linear::pro::checker, layout::pro::checker>>;
|
||
|
||
using Row = BoxLayout<QHBoxLayout>;
|
||
using Col = BoxLayout<QVBoxLayout>;
|
||
|
||
namespace row = linear;
|
||
namespace col = linear;
|
||
|
||
using HBoxLayout = Row;
|
||
using VBoxLayout = Col;
|
||
|
||
namespace h_box_layout = linear;
|
||
namespace v_box_layout = linear;
|
||
|
||
namespace internal {
|
||
inline auto use_the_namespace_alias_to_eliminate_warnings() {
|
||
std::ignore = row::pro::Token {};
|
||
std::ignore = col::pro::Token {};
|
||
std::ignore = h_box_layout::pro::Token {};
|
||
std::ignore = v_box_layout::pro::Token {};
|
||
}
|
||
}
|
||
|
||
}
|