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#pragma once
#include <list>
#include <cstdlib>
#include <notifier.h>
namespace GUI {
class Layout;
class LayoutItem {
public:
LayoutItem();
virtual ~LayoutItem();
void setLayoutParent(Layout* parent);
virtual void resize(int width, int height) = 0;
virtual void move(size_t x, size_t y) = 0;
virtual int x() = 0;
virtual int y() = 0;
virtual size_t width() = 0;
virtual size_t height() = 0;
private:
Layout* parent;
};
class Layout : public Listener
{
public:
Layout(LayoutItem *parent);
virtual ~Layout() {}
virtual void addItem(LayoutItem *item);
virtual void removeItem(LayoutItem *item);
virtual void layout() = 0;
protected:
void sizeChanged(int width, int height);
LayoutItem *parent;
typedef std::list<LayoutItem *> LayoutItemList;
LayoutItemList items;
};
class BoxLayout : public Layout {
public:
BoxLayout(LayoutItem *parent);
void setResizeChildren(bool resize_children);
void setSpacing(size_t spacing);
virtual void layout() override = 0;
protected:
bool resizeChildren{false};
size_t spacing{0};
};
enum class HAlignment {
left,
center,
right,
};
class VBoxLayout : public BoxLayout {
public:
VBoxLayout(LayoutItem *parent);
void setHAlignment(HAlignment alignment);
virtual void layout() override;
protected:
HAlignment align;
};
enum class VAlignment {
top,
center,
bottom,
};
class HBoxLayout : public BoxLayout {
public:
HBoxLayout(LayoutItem *parent);
void setVAlignment(VAlignment alignment);
virtual void layout() override;
protected:
VAlignment align;
};
}
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