Files
MuditaOS/module-gui/gui/widgets/BoxLayout.hpp
2020-07-15 13:07:20 +02:00

106 lines
4.1 KiB
C++

#pragma once
#include <cstdint>
#include "Layout.hpp"
#include "Rect.hpp"
#include <Alignment.hpp>
#include "LayoutSizeStore.hpp"
#include "log/log.hpp"
namespace gui
{
class BoxLayout : public Rect, Layout
{
protected:
struct BoxElement
{
BoxElement(Item *item) : item{item}, noUpdate{false} {};
Item *item;
bool noUpdate;
};
template <Axis axis> uint32_t sizeUsed(Item *it)
{
uint32_t sum = 0;
std::for_each(it->children.begin(), it->children.end(), [&](auto &el) {
sum += el->visible ? el->area(Area::Min).size(axis) + el->getMargins().getSumInAxis(axis) : 0;
});
return sum;
};
template <Axis axis> uint32_t sizeLeft(Item *it, Item::Area area = Item::Area::Min)
{
return (sizeUsed<axis>(it) >= it->getSize(axis)) ? 0 : it->getSize(axis) - sizeUsed<axis>(it);
};
template <Axis axis> void resizeItems();
template <Axis axis>[[nodiscard]] uint16_t getAxisAlignmentValue(uint16_t calcPos);
std::list<Item *> outOfDrawAreaItems;
void addToOutOfDrawAreaList(Item *item);
virtual void resizeItems();
bool reverseOrder = false;
/// get next navigation item including `from` item, ecludes not visible items and not acvite items
std::list<Item *>::iterator nextNavigationItem(std::list<Item *>::iterator from);
public:
BoxLayout();
BoxLayout(Item *parent, const uint32_t &x, const uint32_t &y, const uint32_t &w, const uint32_t &h);
bool onInput(const InputEvent &inputEvent) override;
virtual bool onFocus(bool state) override;
virtual ~BoxLayout() = default;
// virtual methods from Item
void setPosition(const short &x, const short &y) override;
void setSize(const unsigned short w, const unsigned short h) override;
void setAlignment(const Alignment &value) override;
void addWidget(gui::Item *item) override;
bool removeWidget(Item *item) override;
bool erase(Item *item) override;
void erase() override;
std::list<DrawCommand *> buildDrawList() override;
/// add item if it will fit in box, return true on success
/// axis sets direction to define space left in container
template <Axis axis> void addWidget(Item *item);
/// set navigation from last to fist element in box
virtual void setNavigation();
void setVisible(bool value) override;
/// set visible but from previous scope... (page, element etc)
void setVisible(bool value, bool previous);
void setReverseOrder(bool value);
/// callback for situaton when we reached top/bottom/left/right of box
/// if we want to do sth special (i.e. request new items)
std::function<bool(const InputEvent &inputEvent)> borderCallback = nullptr;
// set focus on specified box element
void setFocusOnElement(uint32_t elementNumber);
void setFocusOnLastElement();
template <Axis axis>
auto handleRequestResize(const Item *, unsigned short request_w, unsigned short request_h) -> Size;
};
class HBox : public BoxLayout
{
public:
void resizeItems() override;
HBox();
HBox(Item *parent, const uint32_t &x = 0, const uint32_t &y = 0, const uint32_t &w = 0, const uint32_t &h = 0);
virtual ~HBox() = default;
virtual void addWidget(Item *item) override;
auto handleRequestResize(const Item *, unsigned short request_w, unsigned short request_h) -> Size override;
};
class VBox : public BoxLayout
{
public:
void resizeItems() override;
VBox();
VBox(Item *parent, const uint32_t &x = 0, const uint32_t &y = 0, const uint32_t &w = 0, const uint32_t &h = 0);
virtual ~VBox() = default;
virtual void addWidget(Item *item) override;
auto handleRequestResize(const Item *, unsigned short request_w, unsigned short request_h) -> Size override;
};
} /* namespace gui */