77 lines
2.3 KiB
C++
77 lines
2.3 KiB
C++
#ifndef Toolbox_Roll_Widget_H
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#define Toolbox_Roll_Widget_H
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#include <QObject>
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#include <QHBoxLayout>
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#include <algorithm>
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#include <functional>
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#include <vector>
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namespace Flex_Qt {
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template <typename T>
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class Roll_Object : QObject {
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public:
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explicit Roll_Object(QObject* parent = nullptr) : QObject(parent) {}
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explicit Roll_Object(std::vector<T*> widgets, std::function<void(T*)> enter_func,
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std::function<void(T*)> leave_func, QObject* parent) :
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widgets(std::move(widgets)), enter_func(enter_func), leave_func(leave_func), QObject(parent) {
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if (!this->widgets.empty() && enter_func) enter_func(this->widgets[index]);
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}
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int index = 0;
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std::vector<T*> widgets;
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std::function<void(T*)> enter_func;
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std::function<void(T*)> leave_func;
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T* cur() {
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if (widgets.empty()) return nullptr;
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return widgets[index];
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}
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void set_cur(T* cur) {
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if (widgets.empty()) return;
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auto it = std::find(widgets.begin(), widgets.end(), cur);
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if (it == widgets.end()) return;
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int new_index = static_cast<int>(std::distance(widgets.begin(), it));
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if (leave_func) leave_func(widgets[index]);
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index = new_index;
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if (enter_func) enter_func(widgets[index]);
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widgets[index]->update();
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}
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void roll_right() {
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if (widgets.empty()) return;
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if (leave_func) leave_func(widgets[index]);
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widgets[index]->update();
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if (widgets.back() != widgets[index]) {
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index++;
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}
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else {
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index = 0;
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}
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if (enter_func) enter_func(widgets[index]);
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widgets[index]->update();
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}
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void roll_left() {
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if (widgets.empty()) return;
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if (leave_func) leave_func(widgets[index]);
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widgets[index]->update();
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if (widgets.front() != widgets[index]) {
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index--;
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}
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else {
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index = static_cast<int>(widgets.size()) - 1;
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}
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if (enter_func) enter_func(widgets[index]);
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widgets[index]->update();
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}
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QHBoxLayout* hbox_layout(int space) {
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auto ret = new QHBoxLayout;
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ret->setMargin(0);
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ret->setSpacing(space);
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for (auto widget : widgets) {
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ret->addWidget(widget, 1);
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}
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return ret;
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}
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};
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}
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#endif
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