SDL  2.0
testwm2.c
Go to the documentation of this file.
1 /*
2  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
3 
4  This software is provided 'as-is', without any express or implied
5  warranty. In no event will the authors be held liable for any damages
6  arising from the use of this software.
7 
8  Permission is granted to anyone to use this software for any purpose,
9  including commercial applications, and to alter it and redistribute it
10  freely.
11 */
12 
13 #include <stdlib.h>
14 #include <stdio.h>
15 
16 #ifdef __EMSCRIPTEN__
17 #include <emscripten/emscripten.h>
18 #endif
19 
20 #include "SDL_test_common.h"
21 
22 static SDLTest_CommonState *state;
23 int done;
24 
25 static const char *cursorNames[] = {
26  "arrow",
27  "ibeam",
28  "wait",
29  "crosshair",
30  "waitarrow",
31  "sizeNWSE",
32  "sizeNESW",
33  "sizeWE",
34  "sizeNS",
35  "sizeALL",
36  "NO",
37  "hand",
38 };
39 int system_cursor = -1;
40 SDL_Cursor *cursor = NULL;
41 
42 /* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */
43 static void
44 quit(int rc)
45 {
46  SDLTest_CommonQuit(state);
47  exit(rc);
48 }
49 
50 void
51 loop()
52 {
53  int i;
54  SDL_Event event;
55  /* Check for events */
56  while (SDL_PollEvent(&event)) {
57  SDLTest_CommonEvent(state, &event, &done);
58 
59  if (event.type == SDL_WINDOWEVENT) {
60  if (event.window.event == SDL_WINDOWEVENT_RESIZED) {
61  SDL_Window *window = SDL_GetWindowFromID(event.window.windowID);
62  if (window) {
63  SDL_Log("Window %d resized to %dx%d\n",
64  event.window.windowID,
65  event.window.data1,
66  event.window.data2);
67  }
68  }
69  if (event.window.event == SDL_WINDOWEVENT_MOVED) {
70  SDL_Window *window = SDL_GetWindowFromID(event.window.windowID);
71  if (window) {
72  SDL_Log("Window %d moved to %d,%d (display %s)\n",
73  event.window.windowID,
74  event.window.data1,
75  event.window.data2,
76  SDL_GetDisplayName(SDL_GetWindowDisplayIndex(window)));
77  }
78  }
79  }
80  if (event.type == SDL_KEYUP) {
81  SDL_bool updateCursor = SDL_FALSE;
82 
83  if (event.key.keysym.sym == SDLK_LEFT) {
84  --system_cursor;
85  if (system_cursor < 0) {
86  system_cursor = SDL_NUM_SYSTEM_CURSORS - 1;
87  }
88  updateCursor = SDL_TRUE;
89  } else if (event.key.keysym.sym == SDLK_RIGHT) {
90  ++system_cursor;
91  if (system_cursor >= SDL_NUM_SYSTEM_CURSORS) {
92  system_cursor = 0;
93  }
94  updateCursor = SDL_TRUE;
95  }
96  if (updateCursor) {
97  SDL_Log("Changing cursor to \"%s\"", cursorNames[system_cursor]);
98  SDL_FreeCursor(cursor);
99  cursor = SDL_CreateSystemCursor((SDL_SystemCursor)system_cursor);
100  SDL_SetCursor(cursor);
101  }
102  }
103  }
104 
105  for (i = 0; i < state->num_windows; ++i) {
106  SDL_Renderer *renderer = state->renderers[i];
107  SDL_RenderClear(renderer);
108  SDL_RenderPresent(renderer);
109  }
110 #ifdef __EMSCRIPTEN__
111  if (done) {
112  emscripten_cancel_main_loop();
113  }
114 #endif
115 }
116 
117 int
118 main(int argc, char *argv[])
119 {
120  int i;
121 
122  /* Enable standard application logging */
123  SDL_LogSetPriority(SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_INFO);
124 
125  SDL_assert(SDL_arraysize(cursorNames) == SDL_NUM_SYSTEM_CURSORS);
126 
127  /* Initialize test framework */
128  state = SDLTest_CommonCreateState(argv, SDL_INIT_VIDEO);
129  if (!state) {
130  return 1;
131  }
132  for (i = 1; i < argc;) {
133  int consumed;
134 
135  consumed = SDLTest_CommonArg(state, i);
136  if (consumed == 0) {
137  consumed = -1;
138  }
139  if (consumed < 0) {
140  SDL_Log("Usage: %s %s\n", argv[0], SDLTest_CommonUsage(state));
141  quit(1);
142  }
143  i += consumed;
144  }
145  if (!SDLTest_CommonInit(state)) {
146  quit(2);
147  }
148 
149  SDL_EventState(SDL_DROPFILE, SDL_ENABLE);
150  SDL_EventState(SDL_DROPTEXT, SDL_ENABLE);
151 
152  for (i = 0; i < state->num_windows; ++i) {
153  SDL_Renderer *renderer = state->renderers[i];
154  SDL_SetRenderDrawColor(renderer, 0xA0, 0xA0, 0xA0, 0xFF);
155  SDL_RenderClear(renderer);
156  }
157 
158  /* Main render loop */
159  done = 0;
160 #ifdef __EMSCRIPTEN__
161  emscripten_set_main_loop(loop, 0, 1);
162 #else
163  while (!done) {
164  loop();
165  }
166 #endif
167  SDL_FreeCursor(cursor);
168 
169  quit(0);
170  /* keep the compiler happy ... */
171  return(0);
172 }
173 
174 /* vi: set ts=4 sw=4 expandtab: */