SDL 2.0
testrelative.c
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1/*
2 Copyright (C) 1997-2019 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/* Simple program: Test relative mouse motion */
14
15#include <stdlib.h>
16#include <stdio.h>
17#include <time.h>
18
19#include "SDL_test_common.h"
20
21#ifdef __EMSCRIPTEN__
22#include <emscripten/emscripten.h>
23#endif
24
26int i, done;
29
30static void
32{
33 SDL_SetRenderDrawColor(renderer, 255, 0, 0, 255);
35}
36
37static void
39 /* Check for events */
40 while (SDL_PollEvent(&event)) {
42 switch(event.type) {
43 case SDL_MOUSEMOTION:
44 {
45 rect.x += event.motion.xrel;
46 rect.y += event.motion.yrel;
47 }
48 break;
49 }
50 }
51 for (i = 0; i < state->num_windows; ++i) {
54 if (state->windows[i] == NULL)
55 continue;
56 SDL_SetRenderDrawColor(renderer, 0x00, 0x00, 0x00, 0xFF);
58
59 /* Wrap the cursor rectangle at the screen edges to keep it visible */
61 if (rect.x < viewport.x) rect.x += viewport.w;
62 if (rect.y < viewport.y) rect.y += viewport.h;
63 if (rect.x > viewport.x + viewport.w) rect.x -= viewport.w;
64 if (rect.y > viewport.y + viewport.h) rect.y -= viewport.h;
65
67
69 }
70#ifdef __EMSCRIPTEN__
71 if (done) {
72 emscripten_cancel_main_loop();
73 }
74#endif
75}
76
77int
78main(int argc, char *argv[])
79{
80
81 /* Enable standard application logging */
83
84 /* Initialize test framework */
86 if (!state) {
87 return 1;
88 }
89 for (i = 1; i < argc; ++i) {
91 }
93 return 2;
94 }
95
96 /* Create the windows and initialize the renderers */
97 for (i = 0; i < state->num_windows; ++i) {
100 SDL_SetRenderDrawColor(renderer, 0xA0, 0xA0, 0xA0, 0xFF);
102 }
103
104 srand((unsigned int)time(NULL));
106 return 3;
107 };
108
111 rect.w = 10;
112 rect.h = 10;
113 /* Main render loop */
114 done = 0;
115#ifdef __EMSCRIPTEN__
116 emscripten_set_main_loop(loop, 0, 1);
117#else
118 while (!done) {
119 loop();
120 }
121#endif
123 return 0;
124}
125
126/* vi: set ts=4 sw=4 expandtab: */
#define SDL_INIT_VIDEO
Definition: SDL.h:79
@ SDL_BLENDMODE_NONE
Definition: SDL_blendmode.h:42
#define SDL_RenderPresent
#define SDL_RenderGetViewport
#define SDL_PollEvent
#define SDL_RenderFillRect
#define SDL_SetRenderDrawColor
#define SDL_SetRelativeMouseMode
#define SDL_SetRenderDrawBlendMode
#define SDL_LogSetPriority
#define SDL_RenderClear
@ SDL_MOUSEMOTION
Definition: SDL_events.h:105
@ SDL_LOG_PRIORITY_INFO
Definition: SDL_log.h:106
@ SDL_LOG_CATEGORY_APPLICATION
Definition: SDL_log.h:66
struct _cl_event * event
@ SDL_TRUE
Definition: SDL_stdinc.h:164
#define DEFAULT_WINDOW_HEIGHT
void SDLTest_CommonQuit(SDLTest_CommonState *state)
Close test window.
SDLTest_CommonState * SDLTest_CommonCreateState(char **argv, Uint32 flags)
Parse command line parameters and create common state.
void SDLTest_CommonEvent(SDLTest_CommonState *state, SDL_Event *event, int *done)
Common event handler for test windows.
#define DEFAULT_WINDOW_WIDTH
int SDLTest_CommonArg(SDLTest_CommonState *state, int index)
Process one common argument.
SDL_bool SDLTest_CommonInit(SDLTest_CommonState *state)
Open test window.
#define NULL
Definition: begin_code.h:167
EGLSurface EGLnsecsANDROID time
Definition: eglext.h:518
A rectangle, with the origin at the upper left (integer).
Definition: SDL_rect.h:78
int h
Definition: SDL_rect.h:80
int w
Definition: SDL_rect.h:80
int y
Definition: SDL_rect.h:79
int x
Definition: SDL_rect.h:79
SDL_Window ** windows
SDL_Renderer ** renderers
static SDL_Renderer * renderer
int main(int argc, char *argv[])
Definition: testrelative.c:78
static void loop()
Definition: testrelative.c:38
SDL_Rect rect
Definition: testrelative.c:27
int done
Definition: testrelative.c:26
SDL_Event event
Definition: testrelative.c:28
static SDLTest_CommonState * state
Definition: testrelative.c:25
int i
Definition: testrelative.c:26
static void DrawRects(SDL_Renderer *renderer, SDL_Rect *rect)
Definition: testrelative.c:31
SDL_Rect viewport
Definition: testviewport.c:28
General event structure.
Definition: SDL_events.h:558