testrelative.c
Go to the documentation of this file.
/*
Copyright (C) 1997-2016 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely.
*/
/* Simple program: Test relative mouse motion */
#include <stdlib.h>
#include <stdio.h>
#include <time.h>
#include "SDL_test_common.h"
#ifdef __EMSCRIPTEN__
#include <emscripten/emscripten.h>
#endif
static SDLTest_CommonState *state;
int i, done;
SDL_Rect rect;
SDL_Event event;
static void
DrawRects(SDL_Renderer * renderer, SDL_Rect * rect)
{
SDL_SetRenderDrawColor(renderer, 255, 0, 0, 255);
SDL_RenderFillRect(renderer, rect);
}
static void
loop(){
/* Check for events */
while (SDL_PollEvent(&event)) {
SDLTest_CommonEvent(state, &event, &done);
switch(event.type) {
case SDL_MOUSEMOTION:
{
rect.x += event.motion.xrel;
rect.y += event.motion.yrel;
}
break;
}
}
for (i = 0; i < state->num_windows; ++i) {
SDL_Rect viewport;
SDL_Renderer *renderer = state->renderers[i];
if (state->windows[i] == NULL)
continue;
SDL_SetRenderDrawColor(renderer, 0x00, 0x00, 0x00, 0xFF);
SDL_RenderClear(renderer);
/* Wrap the cursor rectangle at the screen edges to keep it visible */
SDL_RenderGetViewport(renderer, &viewport);
if (rect.x < viewport.x) rect.x += viewport.w;
if (rect.y < viewport.y) rect.y += viewport.h;
if (rect.x > viewport.x + viewport.w) rect.x -= viewport.w;
if (rect.y > viewport.y + viewport.h) rect.y -= viewport.h;
DrawRects(renderer, &rect);
SDL_RenderPresent(renderer);
}
#ifdef __EMSCRIPTEN__
if (done) {
emscripten_cancel_main_loop();
}
#endif
}
int
main(int argc, char *argv[])
{
/* Enable standard application logging */
SDL_LogSetPriority(SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_INFO);
/* Initialize test framework */
state = SDLTest_CommonCreateState(argv, SDL_INIT_VIDEO);
if (!state) {
return 1;
}
for (i = 1; i < argc; ++i) {
SDLTest_CommonArg(state, i);
}
if (!SDLTest_CommonInit(state)) {
return 2;
}
/* Create the windows and initialize the renderers */
for (i = 0; i < state->num_windows; ++i) {
SDL_Renderer *renderer = state->renderers[i];
SDL_SetRenderDrawBlendMode(renderer, SDL_BLENDMODE_NONE);
SDL_SetRenderDrawColor(renderer, 0xA0, 0xA0, 0xA0, 0xFF);
SDL_RenderClear(renderer);
}
srand((unsigned int)time(NULL));
if(SDL_SetRelativeMouseMode(SDL_TRUE) < 0) {
return 3;
};
rect.x = DEFAULT_WINDOW_WIDTH / 2;
rect.y = DEFAULT_WINDOW_HEIGHT / 2;
rect.w = 10;
rect.h = 10;
/* Main render loop */
done = 0;
#ifdef __EMSCRIPTEN__
emscripten_set_main_loop(loop, 0, 1);
#else
while (!done) {
loop();
}
#endif
SDLTest_CommonQuit(state);
return 0;
}
/* vi: set ts=4 sw=4 expandtab: */
main
int main(int argc, char *argv[])
Definition: testrelative.c:78
SDL_PollEvent
#define SDL_PollEvent
Definition: SDL_dynapi_overrides.h:128
SDL_BLENDMODE_NONE
Definition: SDL_blendmode.h:42
SDLTest_CommonCreateState
SDLTest_CommonState * SDLTest_CommonCreateState(char **argv, Uint32 flags)
Parse command line parameters and create common state.
Definition: SDL_test_common.c:36
rect
SDL_Rect rect
Definition: testrelative.c:27
done
int done
Definition: testrelative.c:26
SDL_RenderFillRect
#define SDL_RenderFillRect
Definition: SDL_dynapi_overrides.h:347
SDLTest_CommonArg
int SDLTest_CommonArg(SDLTest_CommonState *state, int index)
Process one common argument.
Definition: SDL_test_common.c:83
state
static SDLTest_CommonState * state
Definition: testrelative.c:25
SDL_SetRenderDrawBlendMode
#define SDL_SetRenderDrawBlendMode
Definition: SDL_dynapi_overrides.h:338
SDL_Renderer
Definition: SDL_sysrender.h:76
SDL_SetRelativeMouseMode
#define SDL_SetRelativeMouseMode
Definition: SDL_dynapi_overrides.h:255
SDL_test_common.h
SDLTest_CommonInit
SDL_bool SDLTest_CommonInit(SDLTest_CommonState *state)
Open test window.
Definition: SDL_test_common.c:645
SDLTest_CommonState::windows
SDL_Window ** windows
Definition: SDL_test_common.h:78
SDLTest_CommonState::num_windows
int num_windows
Definition: SDL_test_common.h:77
renderer
SDL_Renderer * renderer
Definition: testautomation_render.c:27
SDLTest_CommonEvent
void SDLTest_CommonEvent(SDLTest_CommonState *state, SDL_Event *event, int *done)
Common event handler for test windows.
Definition: SDL_test_common.c:1295
SDL_RenderGetViewport
#define SDL_RenderGetViewport
Definition: SDL_dynapi_overrides.h:331
DEFAULT_WINDOW_HEIGHT
#define DEFAULT_WINDOW_HEIGHT
Definition: SDL_test_common.h:42
SDL_LOG_PRIORITY_INFO
Definition: SDL_log.h:106
SDL_Rect::x
int x
Definition: SDL_rect.h:66
SDL_TRUE
Definition: SDL_stdinc.h:129
SDL_Rect::w
int w
Definition: SDL_rect.h:67
SDLTest_CommonState
Definition: SDL_test_common.h:51
SDLTest_CommonState::renderers
SDL_Renderer ** renderers
Definition: SDL_test_common.h:84
SDL_LogSetPriority
#define SDL_LogSetPriority
Definition: SDL_dynapi_overrides.h:242
NULL
#define NULL
Definition: begin_code.h:143
SDL_MOUSEMOTION
Definition: SDL_events.h:102
loop
static void loop()
Definition: testrelative.c:38
SDL_RenderClear
#define SDL_RenderClear
Definition: SDL_dynapi_overrides.h:340
i
int i
Definition: testrelative.c:26
SDL_Rect::h
int h
Definition: SDL_rect.h:67
viewport
SDL_Rect viewport
Definition: testviewport.c:28
SDL_Event
General event structure.
Definition: SDL_events.h:521
SDL_SetRenderDrawColor
#define SDL_SetRenderDrawColor
Definition: SDL_dynapi_overrides.h:336
DrawRects
static void DrawRects(SDL_Renderer *renderer, SDL_Rect *rect)
Definition: testrelative.c:31
SDL_LOG_CATEGORY_APPLICATION
Definition: SDL_log.h:66
DEFAULT_WINDOW_WIDTH
#define DEFAULT_WINDOW_WIDTH
Definition: SDL_test_common.h:41
SDL_Rect::y
int y
Definition: SDL_rect.h:66
SDLTest_CommonQuit
void SDLTest_CommonQuit(SDLTest_CommonState *state)
Close test window.
Definition: SDL_test_common.c:1560
SDL_INIT_VIDEO
#define SDL_INIT_VIDEO
Definition: SDL.h:77
SDL_Rect
A rectangle, with the origin at the upper left.
Definition: SDL_rect.h:64
SDL_RenderPresent
#define SDL_RenderPresent
Definition: SDL_dynapi_overrides.h:352
SDL_Event::type
Uint32 type
Definition: SDL_events.h:523
event
SDL_Event event
Definition: testrelative.c:28