mirror of
https://github.com/hrydgard/ppsspp.git
synced 2024-11-23 13:30:02 +00:00
60 lines
1.8 KiB
C++
60 lines
1.8 KiB
C++
// Simple immediate mode UI implementation.
|
|
//
|
|
// Heavily inspired by Sol's tutorial at http://sol.gfxile.net/imgui/.
|
|
//
|
|
// A common pattern is Adapter classes for changing how things are drawn
|
|
// in lists, for example.
|
|
//
|
|
// Immediate UI works great for overlay UI for games, for example, but is actually
|
|
// not really a good idea for full app UIs. Also, animations are difficult because
|
|
// there's not really any good place to store state.
|
|
//
|
|
// hrydgard@gmail.com
|
|
|
|
#pragma once
|
|
|
|
// Simple ID generators. Absolutely no guarantee of collision avoidance if you implement
|
|
// multiple parts of a single screen of UI over multiple files unless you use IMGUI_SRC_ID.
|
|
#ifdef IMGUI_SRC_ID
|
|
#define GEN_ID (int)((IMGUI_SRC_ID) + (__LINE__))
|
|
#define GEN_ID_LOOP(i) (int)((IMGUI_SRC_ID) + (__LINE__) + (i) * 13612)
|
|
#else
|
|
#define GEN_ID (__LINE__)
|
|
#define GEN_ID_LOOP(i) ((__LINE__) + ((int)i) * 13612)
|
|
#endif
|
|
|
|
#include <string>
|
|
#include <vector>
|
|
|
|
#include "Common/Render/DrawBuffer.h"
|
|
#include "Common/Input/InputState.h"
|
|
|
|
class UIContext;
|
|
|
|
struct Atlas;
|
|
|
|
// This is the drawbuffer used for UI. Remember to flush it at the end of the frame.
|
|
// TODO: One should probably pass it in through UIInit.
|
|
extern DrawBuffer ui_draw2d;
|
|
|
|
// TODO: These don't really belong here.
|
|
|
|
// Implement this interface to style your lists
|
|
class UIListAdapter {
|
|
public:
|
|
virtual ~UIListAdapter() {}
|
|
virtual size_t getCount() const = 0;
|
|
virtual void drawItem(int item, int x, int y, int w, int h, bool active) const = 0;
|
|
virtual float itemHeight(int itemIndex) const { return 64; }
|
|
virtual bool itemEnabled(int itemIndex) const { return true; }
|
|
};
|
|
|
|
class StringVectorListAdapter : public UIListAdapter {
|
|
public:
|
|
StringVectorListAdapter(const std::vector<std::string> *items) : items_(items) {}
|
|
size_t getCount() const override { return items_->size(); }
|
|
|
|
private:
|
|
const std::vector<std::string> *items_;
|
|
};
|