SdlImageWindow Class Reference

#include <SdlImageWindow.h>

Public Member Functions
	SdlImageWindow (const char *title)
	SdlImageWindow (const char *title, SDL_Surface *srf, int nx, int ny, float scale)
void	create_window (SDL_Surface *srf, int nx, int ny, float scale)
void	update_image ()

Public Attributes
const char *	title

Detailed Description

Definition at line 22 of file SdlImageWindow.h.

Constructor & Destructor Documentation

SdlImageWindow() [1/2]

SdlImageWindow::SdlImageWindow ( const char *  title )

explicit

Definition at line 22 of file SdlImageWindow.cpp.

{
    this->title = title;
    this->window = NULL;   // Pointer for the window
    this->renderer = NULL; // Pointer for the renderer
    this->tex = NULL;      // Texture for the window
    this->srf = NULL;      // Surface (data source)
};

SdlImageWindow() [2/2]

SdlImageWindow::SdlImageWindow ( const char *  title, SDL_Surface *  srf, int  nx, int  ny, float  scale  )

explicit

Definition at line 16 of file SdlImageWindow.cpp.

{
    this->title = title;
    create_window(srf, nx, ny, scale);
};

Member Function Documentation

create_window()

void SdlImageWindow::create_window	(	SDL_Surface *	srf,
		int	nx,
		int	ny,
		float	scale
	)

Definition at line 31 of file SdlImageWindow.cpp.

{
    // Creating window
    window = SDL_CreateWindow(title, SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, scale * nx, scale * ny, SDL_WINDOW_SHOWN | SDL_WINDOW_RESIZABLE | SDL_WINDOW_OPENGL);
    if (window == NULL)
    {
        std::cout << "Window could not be created! SDL Error: " << SDL_GetError() << std::endl;
    }
    // Creating Renderer
    renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC);
    if (renderer == NULL)
    {
        std::cout << "Renderer could not be created! SDL Error: " << SDL_GetError() << std::endl;
    }
    // Creating texture for hardware rendering
    tex = SDL_CreateTexture(renderer, SDL_GetWindowPixelFormat(window), SDL_TEXTUREACCESS_STATIC, nx, ny);
    if (tex == NULL)
    {
        std::cout << "Texture could not be created! SDL Error: " << SDL_GetError() << std::endl;
    }
    // Maintain Pixel aspect ratio on resizing
    if (SDL_RenderSetLogicalSize(renderer, scale * nx, scale * ny) < 0)
    {
        std::cout << "Logical size could not be set! SDL Error: " << SDL_GetError() << std::endl;
    }
    this->srf = srf;
}

update_image()

void SdlImageWindow::update_image

(

)

Definition at line 59 of file SdlImageWindow.cpp.

{
    if (srf != NULL)
    {
        if (SDL_UpdateTexture(tex, NULL, srf->pixels, srf->pitch) == -1)
        {
            std::cout << "SDL_UpdateTexture failed: " << SDL_GetError() << std::endl;
        }
        if (SDL_RenderCopy(renderer, tex, NULL, NULL) == -1)
        {
            std::cout << "SDL_RenderCopy failed: " << SDL_GetError() << std::endl;
        }
        SDL_RenderPresent(renderer);
    }
}

Member Data Documentation

title

const char* SdlImageWindow::title

Definition at line 25 of file SdlImageWindow.h.

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The documentation for this class was generated from the following files:

• src/SdlImageWindow.h
• src/SdlImageWindow.cpp