png.cpp File Reference

The png graphic file loader. More...

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <png.h>
#include "stratagus.h"
#include "video.h"
#include "iolib.h"
#include "iocompat.h"

Go to the source code of this file.

Functions
static void	CL_png_read_data (png_structp png_ptr, png_bytep data, png_size_t length)
int	LoadGraphicPNG (CGraphic *g)
	Make an OpenGL texture.
void	SaveScreenshotPNG (const std::string &name)
	Set the current callbacks.

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Detailed Description

The png graphic file loader.

Definition in file png.cpp.

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Function Documentation

static void CL_png_read_data	(	png_structp	png_ptr,
		png_bytep	data,
		png_size_t	length
	)			[static]

png read callback for CL-IO.

Parameters:

	png_ptr	png struct pointer.
	data	byte address to read to.
	length	number of bytes to read.

Definition at line 60 of file png.cpp.

References CFile::read().

Referenced by LoadGraphicPNG().

int LoadGraphicPNG

(

CGraphic *

g

)

Make an OpenGL texture.

Load a png graphic file. Modified function from SDL_Image

Parameters:

g

graphic to load.

Returns:

0 for success, -1 for error.

Definition at line 81 of file png.cpp.

References CL_OPEN_READ, CL_png_read_data(), CFile::close(), CGraphic::File, CGraphic::GraphicHeight, CGraphic::GraphicWidth, int(), LibraryFileName(), CFile::open(), and CGraphic::Surface.

Referenced by CGraphic::Load().

void SaveScreenshotPNG

(

const std::string &

name

)

Set the current callbacks.

Save a screenshot to a PNG file.

Parameters:

name

PNG filename to save.

Definition at line 314 of file png.cpp.

References CVideo::Depth, CVideo::Height, CVideo::LockScreen(), TheScreen, CVideo::UnlockScreen(), UseOpenGL, Video, and CVideo::Width.

Referenced by Screenshot().