git.mutantstargoat.com Git - vrfileman/blob - src/main.cc

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <SDL2/SDL.h>
   4 #include "app.h"
   5
   6 static void process_event(SDL_Event *ev);
   7
   8 static SDL_Window *win;
   9 static SDL_GLContext ctx;
  10 static bool redraw_pending = true;
  11 static bool quit;
  12
  13 int main(int argc, char **argv)
  14 {
  15         if(SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER) == -1) {
  16                 fprintf(stderr, "failed to initialize SDL\n");
  17                 return 1;
  18         }
  19
  20         SDL_GL_SetAttribute(SDL_GL_MULTISAMPLEBUFFERS, 1);
  21         SDL_GL_SetAttribute(SDL_GL_MULTISAMPLESAMPLES, 1);
  22         SDL_GL_SetAttribute(SDL_GL_FRAMEBUFFER_SRGB_CAPABLE, 1);
  23
  24         int x = SDL_WINDOWPOS_UNDEFINED;
  25         int y = SDL_WINDOWPOS_UNDEFINED;
  26         unsigned int flags = SDL_WINDOW_OPENGL | SDL_WINDOW_RESIZABLE | SDL_WINDOW_ALLOW_HIGHDPI;
  27         win_width = 1280;
  28         win_height = 800;
  29         if(!(win = SDL_CreateWindow("vrfileman", x, y, win_width, win_height, flags))) {
  30                 fprintf(stderr, "failed to create window\n");
  31                 return 1;
  32         }
  33
  34         if(!(ctx = SDL_GL_CreateContext(win))) {
  35                 fprintf(stderr, "failed to create OpenGL context\n");
  36                 return 1;
  37         }
  38         SDL_GL_GetDrawableSize(win, &win_width, &win_height);
  39         win_aspect = (float)win_width / (float)win_height;
  40
  41         if(!app_init(argc, argv)) {
  42                 SDL_Quit();
  43                 return 1;
  44         }
  45         app_reshape(win_width, win_height);
  46
  47         while(!quit) {
  48                 SDL_Event ev;
  49
  50                 if(!redraw_pending) {
  51                         if(!SDL_WaitEvent(0)) {
  52                                 fprintf(stderr, "error while waiting for events\n");
  53                                 break;
  54                         }
  55                 }
  56
  57                 time_msec = app_get_msec();
  58                 while(SDL_PollEvent(&ev)) {
  59                         process_event(&ev);
  60                         if(quit) goto break_evloop;
  61                 }
  62
  63                 if(redraw_pending) {
  64                         redraw_pending = false;
  65                         app_draw();
  66                 }
  67         }
  68 break_evloop:
  69
  70         app_cleanup();
  71         SDL_Quit();
  72         return 0;
  73 }
  74
  75 void app_quit()
  76 {
  77         quit = true;
  78 }
  79
  80 void app_redraw()
  81 {
  82         redraw_pending = true;
  83 }
  84
  85 void app_swap_buffers()
  86 {
  87         SDL_GL_SwapWindow(win);
  88 }
  89
  90 long app_get_msec()
  91 {
  92         return SDL_GetTicks();
  93 }
  94
  95 static void process_event(SDL_Event *ev)
  96 {
  97         switch(ev->type) {
  98         case SDL_QUIT:
  99                 quit = true;
 100                 break;
 101
 102         case SDL_KEYDOWN:
 103         case SDL_KEYUP:
 104                 app_keyboard(ev->key.keysym.sym, ev->key.state == SDL_PRESSED);
 105                 break;
 106
 107         case SDL_MOUSEBUTTONDOWN:
 108         case SDL_MOUSEBUTTONUP:
 109                 app_mouse_button(ev->button.button - SDL_BUTTON_LEFT, ev->button.state == SDL_PRESSED,
 110                                 ev->button.x, ev->button.y);
 111                 break;
 112
 113         case SDL_MOUSEMOTION:
 114                 app_mouse_motion(ev->motion.x, ev->motion.y);
 115                 break;
 116
 117         case SDL_WINDOWEVENT:
 118                 if(ev->window.event == SDL_WINDOWEVENT_RESIZED) {
 119                         win_width = ev->window.data1;
 120                         win_height = ev->window.data2;
 121                         win_aspect = (float)win_width / (float)win_height;
 122                         app_reshape(win_width, win_height);
 123                 }
 124                 break;
 125         }
 126 }