root/window/system.cc

/*
 * Copyright (c) 2004-2006  Kazunori "jagarl" Ueno
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include <SDL.h>
#include "system.h"
#include <iostream>
#include <stdio.h>

using namespace std;

// void SDL_SetEventFilter(SDL_EventFilter filter);
// typedef int (*SDL_EventFilter)(const SDL_Event *event);
namespace System {
        Main* Main::instance = NULL;

        int Main::event_filter(const SDL_Event* event) {
                return 1; /* throw all event */
        }

        Main::Main(void) {
                instance = this;
                framerate = 20;
                cursor = NULL;
        }

        Main::~Main() {
                if (cursor) delete cursor;
        }

        void Main::Quit(void) {
                is_exit = true;
        }

        void Main::EnableVideo(void) {
                is_video_update = true;
        }

        void Main::DisableVideo(void) {
                is_video_update = false;
        }

        bool Main::is_exit = false;
        bool Main::is_video_update = true;

        void Main::Mainloop(void) {
                SDL_SetEventFilter(&event_filter);
                Uint32 old_time = 0;
                while(!is_exit) {
                        Uint32 start_time = SDL_GetTicks();
                        if (! event.Exec(start_time)) break;
                        if (start_time - old_time > 1000/framerate) {
                                if (is_video_update) root.ExecUpdate();
                                event.Exec(Event::Time::FRAME_UPDATE);
                                cout.flush();
                                old_time = start_time;
                        }

        // 問題
        // z 軞ず xy 軞の盞互干枉高速化
        // 移動するりィゞット描画の高速化
        // キャッシュ
        // 文字列の䞀郚のみ曎新の高速化
        // 「階局 z で x ãªã‚‹é ˜åŸŸç„¡åŠ¹åŒ–ã€y ãªã‚‹é ˜åŸŸç”Ÿæˆã€ã§è‰¯ã„ïŒŸïŒžExpose
        /*
                        Uint32 end_time = SDL_GetTicks();
                        Uint32 delay = (end_time-start_time);
                        if(delay < 1000/framerate) SDL_Delay(1000/framerate - delay);
                        else SDL_Delay(0);
        */
                        SDL_Delay(0);
                }
        }

        void Main::SetCursor(Surface* s, const Rect& r) {
                if (instance == NULL) return;
                if (instance->cursor) delete instance->cursor;
                if (s == NULL) { // カヌ゜ル消去
                        instance->cursor = NULL;
                } else if (s == DEFAULT_MOUSECURSOR) {
                        instance->cursor = NULL;
                        SDL_ShowCursor(SDL_ENABLE);
                } else {
                        instance->cursor = new WidMouseCursor(instance->event, instance->root.root, s, r.lx, r.ty, r.width(), r.height());
                        instance->cursor->show();
                        SDL_ShowCursor(SDL_DISABLE);
                }
        }
}