0796176a0e
had to make sure the getters properly calculated layout before retrieving values. Add a Tab class to allow for better control of adding content into the tabs and managing the contents once its in there. Use setting class to do a quick demo of the OnShow code abilities. This could be useful for things like settings pages that need to load up HW resources when they are shown but then can power them down when they are hidden.
77 lines
No EOL
2 KiB
C++
77 lines
No EOL
2 KiB
C++
#pragma once
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#include "UIElementIds.hpp"
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#include "lvgl.h"
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namespace UI {
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class UIElement {
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public:
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UIElement(lv_obj_t *aLvglSelf, const ID aId = ID());
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virtual void SetBgColor(lv_color_t value,
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lv_style_selector_t selector = LV_PART_MAIN);
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void SetVisiblity(bool aVisibility);
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bool IsVisible();
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virtual void SetWidth(lv_coord_t aWidth);
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virtual void SetHeight(lv_coord_t aHeight);
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lv_coord_t GetWidth();
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lv_coord_t GetHeight();
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virtual void SetY(lv_coord_t aY);
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virtual void SetX(lv_coord_t aX);
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lv_coord_t GetY();
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lv_coord_t GetX();
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virtual void AddElement(UIElement *anElement);
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ID GetID() { return mId; };
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template <class UIElemTy> static UIElemTy GetElement(lv_obj_t *aLvglObject);
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protected:
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/// @brief get Lvgl object refernce to use in LVGL APIs
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/// @return lvgl object a
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lv_obj_t *LvglSelf() { return mLvglSelf; }
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/// @brief Show Element
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virtual void Show();
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/// @brief Hide Element
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virtual void Hide();
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/// @brief Override in child class to run something after element is shown
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virtual void OnShow() = 0;
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/// @brief Override in child class to run something after element is hidden
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virtual void OnHide() = 0;
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private:
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lv_obj_t *mLvglSelf;
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const ID mId;
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};
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/**
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* @brief This helper allows conversion between anLvglObject and a
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* core element by using the user data that links the LVGL object
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* to its C++ counterpart. Do note that it is possible that this
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* user data is not always there if the Lvgl Object has not been wrapped
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* by UIElement
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*
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* @tparam UIElemTy - Type of element you want to cast to
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* @param aLvglObject - object to extract User data from
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* @return UIElemTy - object stored in user data (See constructor of
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* UIElement)
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*/
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template <class UIElemTy>
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UIElemTy UIElement::GetElement(lv_obj_t *aLvglObject) {
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auto UIElement = lv_obj_get_user_data(aLvglObject);
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if (UIElement) {
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return static_cast<UIElemTy>(UIElement);
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}
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return nullptr;
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}
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} // namespace UI
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