test/testrelative.c
author Ryan C. Gordon <icculus@icculus.org>
Fri, 12 Aug 2016 19:59:00 -0400
changeset 10266 c09f06c4e8c8
parent 9998 f67cf37e9cd4
permissions -rw-r--r--
emscripten: send fake mouse events for touches, like other targets do. (This really should be handled at the higher level and not in the individual targets, but this fixes the immediate bug.)

/*
  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: */