source: opengl-game/game-gui.hpp@ e1f88a9

feature/imgui-sdl
Last change on this file since e1f88a9 was e1f88a9, checked in by Dmitry Portnoy <dmitry.portnoy@…>, 4 years ago

Create a system to draw and switch between different screens, a Screen class, a MainScreen class that extends it, and some classes for UI elements that can be added to screens.

  • Property mode set to 100644
File size: 1.8 KB
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1#ifndef _GAME_GUI_H
2#define _GAME_GUI_H
3
4#include <string>
5#include <vector>
6
7#ifdef GAMEGUI_INCLUDE_VULKAN
8 #include <vulkan/vulkan.h>
9#endif
10
11using namespace std;
12
13// TODO: See if it makes sense to combine this with the files in the gui folder
14
15enum EventType {
16 UI_EVENT_QUIT,
17 UI_EVENT_WINDOW,
18 UI_EVENT_WINDOWRESIZE,
19 UI_EVENT_KEYDOWN,
20 UI_EVENT_KEYUP,
21 UI_EVENT_MOUSEBUTTONDOWN,
22 UI_EVENT_MOUSEBUTTONUP,
23 UI_EVENT_MOUSEMOTION,
24 UI_EVENT_UNKNOWN
25};
26
27struct WindowEvent {
28 EventType type;
29};
30
31struct KeyEvent {
32 EventType type;
33 unsigned int keycode;
34 bool repeat;
35};
36
37struct MouseEvent {
38 EventType type;
39 int x;
40 int y;
41 /*
42 int button;
43 int action;
44 */
45};
46
47struct WindowResizeEvent {
48 EventType type;
49 int width;
50 int height;
51};
52
53struct UnknownEvent {
54 EventType type;
55 unsigned int eventType;
56};
57
58// TODO: Switch from union to std::variant
59
60union UIEvent {
61 EventType type;
62 WindowEvent window;
63 KeyEvent key;
64 MouseEvent mouse;
65 WindowResizeEvent windowResize;
66 UnknownEvent unknown;
67};
68
69class GameGui {
70 public:
71 virtual ~GameGui() {};
72
73 virtual string& getError() = 0;
74
75 virtual bool init() = 0;
76 virtual void shutdown() = 0;
77
78 virtual void* createWindow(const string& title, int width, int height, bool fullscreen) = 0;
79 virtual void destroyWindow() = 0;
80
81 virtual void processEvents() = 0;
82 virtual int pollEvent(UIEvent* event) = 0;
83 virtual bool keyPressed(unsigned int key) = 0;
84
85 virtual void refreshWindowSize() = 0;
86 virtual int getWindowWidth() = 0;
87 virtual int getWindowHeight() = 0;
88
89#ifdef GAMEGUI_INCLUDE_VULKAN
90 virtual bool createVulkanSurface(VkInstance instance, VkSurfaceKHR* surface) = 0;
91 virtual vector<const char*> getRequiredExtensions() = 0;
92#endif
93};
94
95#endif // _GAME_GUI_H
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