kc3-lang/SDL/test/testdrawchessboard.c

Branch : - branch - v2.28 - tag -

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  Commit

• Author : David Ludwig
  Date : 2014-12-03 10:55:23
  Hash : 70438be2
  Message : WinRT: fixed bug whereby SDL would override an app's default orientation WinRT apps can set a default, preferred orientation via a .appxmanifest file. SDL was overriding this on app startup, and making the app use all possible orientations (landscape and portrait). Thanks to Eric Wing for the heads up on this!

• test/testdrawchessboard.c

• /*
     Copyright (C) 1997-2014 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.
  
     This file is created by : Nitin Jain (nitin.j4@samsung.com)
  */
  
  /* Sample program:  Draw a Chess Board  by using SDL_CreateSoftwareRenderer API */
  
  #include "SDL.h"
  
  void
  DrawChessBoard(SDL_Renderer * renderer)
  {
  	int row = 0,column = 0,x = 0;
  	SDL_Rect rect, darea;
  
  	/* Get the Size of drawing surface */
  	SDL_RenderGetViewport(renderer, &darea);
  
  	for( ; row < 8; row++)
  	{
  		column = row%2;
  		x = x + column;
  		for( ; column < 4+(row%2); column++)
  		{
  			SDL_SetRenderDrawColor(renderer, 0, 0, 0, 0xFF);
  
  			rect.w = darea.w/8;
  			rect.h = darea.h/8;
  			rect.x = x * rect.w;
  			rect.y = row * rect.h;
  			x = x + 2;
  			SDL_RenderFillRect(renderer, &rect);
  		}
  		x=0;
  	}
  }
  
  int
  main(int argc, char *argv[])
  {
  	SDL_Window *window;
  	SDL_Surface *surface;
  	SDL_Renderer *renderer;
  
      /* Enable standard application logging */
      SDL_LogSetPriority(SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_INFO);
  
  	/* Initialize SDL */
  	if(SDL_Init(SDL_INIT_VIDEO) != 0)
  	{
  		SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "SDL_Init fail : %s\n", SDL_GetError());
  		return 1;
  	}
  
  
  	/* Create window and renderer for given surface */
  	window = SDL_CreateWindow("Chess Board", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, 640, 480, SDL_WINDOW_SHOWN);
  	if(!window)
  	{
  		SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Window creation fail : %s\n",SDL_GetError());
  		return 1;
  	}	
  	surface = SDL_GetWindowSurface(window);
  	renderer = SDL_CreateSoftwareRenderer(surface);
  	if(!renderer)
  	{
  		SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Render creation for surface fail : %s\n",SDL_GetError());
  		return 1;
  	}
  
  	/* Clear the rendering surface with the specified color */
  	SDL_SetRenderDrawColor(renderer, 0xFF, 0xFF, 0xFF, 0xFF);
  	SDL_RenderClear(renderer);
  
  
  	/* Draw the Image on rendering surface */
  	while(1)
  	{
  		SDL_Event e;
  		if (SDL_PollEvent(&e)) {
  			if (e.type == SDL_QUIT) 
  				break;
  
  			if(e.key.keysym.sym == SDLK_ESCAPE)
  				break;
  		}
  		
  		DrawChessBoard(renderer);
  		
  		/* Got everything on rendering surface,
   		   now Update the drawing image on window screen */
  		SDL_UpdateWindowSurface(window);
  
  	}
  
  	return 0;
  }