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C-/C++-Quelltext

#include <cstdlib>

#include <string>
#include <iostream>
using namespace std;

#include <SDL/SDL.h>
#include <cairo/cairo.h>

#include "init.hpp"
#include "util.hpp"

int main()
{
    SDL_Surface* mainSurface;
    
    mainSurface = Initialize(1280, 1024);
    
    FillSurface(mainSurface, 0x00ffffff);
    
    cairo_surface_t* surface = cairo_image_surface_create(CAIRO_FORMAT_RGB24, 1280, 1024);
    cairo_t* cr = cairo_create(surface);
    
    cairo_set_source_rgb(cr, 0.0, 0.0, 0.0);
    cairo_set_line_width(cr, 5);
    
    // Rechteck zeichnen

    cairo_move_to(cr, 100     , 100);
    cairo_line_to(cr, 1280-100, 100);
    cairo_line_to(cr, 1280-100, 1024-100);
    cairo_line_to(cr, 100     , 1024-100);
    cairo_line_to(cr, 100     , 100);
    
    cairo_paint(cr);
    
    // Daten der cairo surface auf die sdl surface übertragen.

    /* Ich dachte mir das der pointer ausreicht da ein kopieren "relativ" lange dauert. */
    mainSurface->pixels = cairo_image_surface_get_data(surface);
    
    SDL_Flip(mainSurface);
    
    SDL_Delay(5000);
    
    exit(0);
}

C-/C++-Quelltext

// init.hpp


#ifndef INIT_HPP
#define INIT_HPP

#include <cstdlib>
#include <iostream>

#include <SDL/SDL.h>


SDL_Surface* Initialize(uint32_t width, uint32_t height);

SDL_Surface* Initialize(uint32_t width, uint32_t height)
{
    SDL_Surface* mainSurface = NULL;

    // Exit the application correct.

    atexit(SDL_Quit);   
    
    // Initialize the sdl library with video and timer support.

    if(SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER) < 0)
    {
        cout << "Error: Couldn't initialize the SDL library!" << endl;
        cout << "SDL Error: " << SDL_GetError() << endl;
        exit(0);
   }
    
    // Set the video mode and create the main surface.

    mainSurface = SDL_SetVideoMode(width, height, 32, SDL_FULLSCREEN | SDL_HWSURFACE | SDL_DOUBLEBUF);
    if(mainSurface == NULL)
    {
        cout << "Error: Couldn't setup video mode!" << endl;
        cout << "SDL Error: " << SDL_GetError() << endl;
        exit(0);
    }

    return mainSurface;
}

#endif // INIT_HPP

C-/C++-Quelltext

// util.hpp


#ifndef UTIL_HPP
#define UTIL_HPP

#include <cstdlib>

#include <SDL/SDL.h>

typedef uint32_t color_t;

uint32_t MapRGB(SDL_Surface* surface, color_t color);
void FillSurface(SDL_Surface* surface, color_t color);

uint32_t MapRGB(SDL_Surface* surface, color_t color)
{
    return SDL_MapRGB(
            surface->format, 
            (color & 0x00FF0000) >> 16, 
            (color & 0x0000FF00) >> 8, 
            (color & 0x000000FF) >> 0
        );
}

void FillSurface(SDL_Surface* surface, color_t color)
{
    SDL_Rect rect;
    
    rect.x = 0;
    rect.y = 0;
    rect.w = surface->w;
    rect.h = surface->h;
    SDL_FillRect(surface, &rect, MapRGB(surface, color));
}

#endif

Quellcode

WX_FLAGS_SHARED  = `wx-config --cxxflags --libs`
SDL_FLAGS_SHARED = `sdl-config --cflags --libs`
SDL_FLAGS_STATIC = `sdl-config --cflags --static-libs`
CAIRO_FLAGS = -I /usr/include/cairo  -l cairo

NAME = wmsys

CPP_MAIN = main.cpp

CPP_SOURCES  = 

all:
    g++ $(SDL_FLAGS_SHARED) $(CAIRO_FLAGS) $(CPP_MAIN) $(CPP_SOURCES) -o $(NAME)
    ./$(NAME)