235d8e043f
This helps with creation and getting values and should be safe since it still keeps lvgl on one thread at a time. Add OnLvglEvent to UIElement that allows foreasy place for UI Elements to respond to LVGL events . Add button class that can react to being presssed via a callback function. Add GetBottom() api to allow easy grabbing of bottom Y coordinate. use some new stuff in the settings page to sort test it all out.
97 lines
No EOL
2.7 KiB
C++
97 lines
No EOL
2.7 KiB
C++
#pragma once
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#include "UIElementIds.hpp"
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#include <lvgl.h>
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#include "KeyPressAbstract.hpp"
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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 ~UIElement();
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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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lv_coord_t GetBottom();
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void AlignTo(UIElement *anElementToAlignWith, lv_align_t anAlignment,
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lv_coord_t aXoffset = 0, lv_coord_t aYOffset = 0);
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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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// Override in object to handle LVGL events for that object
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virtual void OnLvglEvent(lv_event_t *anEvent){};
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/// @brief Set KeyEvent to the UI element to see if it wants to handle it
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virtual bool KeyEvent(KeyPressAbstract::KeyEvent aKeyEvent);
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/// @brief Override to Handle KeyEvent for the specific element
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/// @return true - Key event was used
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/// fasle - Key event was unused
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virtual bool OnKeyEvent(KeyPressAbstract::KeyEvent aKeyEvent) = 0;
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private:
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static void LvglEventHandler(lv_event_t *anEvent);
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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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