WindowManager.cpp

#include "WindowManager.h"

WindowManager::WindowManager()
{
}

WindowManager::~WindowManager()
{
}

bool WindowManager::initialize()
{
	if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER) < 0) {
		cerr << "Window system could not be initalized: " << SDL_GetError() << endl;
		return false;
	}

	atexit(SDL_Quit);

	// retrieve current video settings
	const SDL_VideoInfo *videoInfo = SDL_GetVideoInfo();

	if (videoInfo->current_w != 0) {
		m_CurrentWidth = m_DesktopWidth = videoInfo->current_w;
	}

	if (videoInfo->current_h != 0) {
		m_CurrentHeight = m_DesktopHeight = videoInfo->current_h;
	}

	if (videoInfo->vfmt->BitsPerPixel != 0) {
		m_DesktopBitsPerPixel = videoInfo->vfmt->BitsPerPixel;
	}

	/*
	 * SDL_SWSURFACE - Das Surface wird im Hauptspeicher abgelegt (default)
	 * SDL_HWSURFACE - Das Surface wird im Grafikspeicher abgelegt
	 * SDL_ASYNCBLIT - Surface benutzt asynchrone Blits, wenn möglich
	 * SDL_ANYFORMAT - Erlaubt jedes Pixel-Format (nur beim display-surface)
	 * SDL_HWPALETTE - Surface nutzt exclusive Farbpalette
	 * SDL_DOUBLEBUF - Surface ist "double buffered" (nur display-surface)
	 * SDL_FULLSCREEN - Surface im Full-Screen-Mode initialisieren (nur display-surface)
	 * SDL_OPENGL - Surface nutzt OpenGL (nur display-surface)
	 * SDL_RESIZABLE - Surfacefenster ist veränderbar (nur display-Surface)
	 * SDL_HWACCEL- Surface blit nutzt Hardwarebeschleunigung
	 * SDL_SRCCOLORKEY - Surface nutzt colorkey blitting
	 * SDL_RLEACCEL - Colorkey blitting ist durch RLE beschleunigt
	 * SDL_SRCALPHA - Surface blit nutzt alpha blending
	 * SDL_PREALLOC - Surface nutzt vorher allokierten Speicher
	 */

	m_VideoModeFlags = SDL_OPENGL | SDL_RESIZABLE;

	Uint32 bitPerPixel = SDL_VideoModeOK(
							m_DesktopWidth,
							m_DesktopHeight,
							m_DesktopBitsPerPixel,
							m_VideoModeFlags);

	if ( !bitPerPixel) {
		cerr << "Video mode not supported: " << SDL_GetError() << endl;
		return false;
	}

	// specify minimum requirements
	// (query with SDL_GL_SetAttribute() after SDL_SetVideoMode() if needed)
	SDL_GL_SetAttribute(SDL_GL_RED_SIZE, 1);
	SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE, 1);
	SDL_GL_SetAttribute(SDL_GL_BLUE_SIZE, 1);
	//SDL_GL_SetAttribute(SDL_GL_ALPHA_SIZE, 8);