/*
 * This file is part of gtkD.
 *
 * gtkD is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License
 * as published by the Free Software Foundation; either version 3
 * of the License, or (at your option) any later version, with
 * some exceptions, please read the COPYING file.
 *
 * gtkD is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with gtkD; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110, USA
 */
 
// generated automatically - do not change
// find conversion definition on APILookup.txt
// implement new conversion functionalities on the wrap.utils pakage

/*
 * Conversion parameters:
 * inFile  = cairo-Image-Surfaces.html
 * outPack = cairo
 * outFile = ImageSurface
 * strct   = cairo_surface_t
 * realStrct=
 * ctorStrct=
 * clss    = ImageSurface
 * interf  = 
 * class Code: No
 * interface Code: No
 * template for:
 * extend  = cairo_surface_t
 * implements:
 * prefixes:
 * 	- cairo_image_surface_
 * 	- cairo_surface_
 * 	- cairo_
 * omit structs:
 * omit prefixes:
 * omit code:
 * omit signals:
 * imports:
 * 	- glib.Str
 * structWrap:
 * 	- cairo_surface_t* -> ImageSurface
 * module aliases:
 * local aliases:
 * overrides:
 */

module cairo.ImageSurface;

public  import gtkc.cairotypes;

private import gtkc.cairo;
private import glib.ConstructionException;


private import glib.Str;



private import cairo.Surface;

/**
 * Image surfaces provide the ability to render to memory buffers
 * either allocated by cairo or by the calling code. The supported
 * image formats are those defined in cairo_format_t.
 */
public class ImageSurface : Surface
{
	
	/** the main Gtk struct */
	protected cairo_surface_t* cairo_surface;
	
	
	public cairo_surface_t* getImageSurfaceStruct()
	{
		return cairo_surface;
	}
	
	
	/** the main Gtk struct as a void* */
	protected override void* getStruct()
	{
		return cast(void*)cairo_surface;
	}
	
	/**
	 * Sets our main struct and passes it to the parent class
	 */
	public this (cairo_surface_t* cairo_surface)
	{
		super(cast(cairo_surface_t*)cairo_surface);
		this.cairo_surface = cairo_surface;
	}
	
	/**
	 * The PNG functions allow reading PNG images into image surfaces, and writing
	 * any surface to a PNG file.
	 *
	 * It is a toy API. It only offers very simple support for reading and
	 * writing PNG files, which is sufficient for testing and
	 * demonstration purposes. Applications which need more control over
	 * the generated PNG file should access the pixel data directly, using
	 * cairo_image_surface_get_data() or a backend-specific access
	 * function, and process it with another library, e.g. gdk-pixbuf or
	 * libpng.
	 */
	
	/**
	 * This function provides a stride value that will respect all
	 * alignment requirements of the accelerated image-rendering code
	 * Since 1.6
	 * Params:
	 * format = A cairo_format_t value
	 * width = The desired width of an image surface to be created.
	 * Returns: the appropriate stride to use given the desired format and width, or -1 if either the format is invalid or the width too large.
	 */
	public static int formatStrideForWidth(cairo_format_t format, int width)
	{
		// int cairo_format_stride_for_width (cairo_format_t format,  int width);
		return cairo_format_stride_for_width(format, width);
	}
	
	/**
	 * Creates an image surface of the specified format and
	 * dimensions. Initially the surface contents are all
	 * 0. (Specifically, within each pixel, each color or alpha channel
	 * belonging to format will be 0. The contents of bits within a pixel,
	 * but not belonging to the given format are undefined).
	 * Since 1.0
	 * Params:
	 * format = format of pixels in the surface to create
	 * width = width of the surface, in pixels
	 * height = height of the surface, in pixels
	 * Returns: a pointer to the newly created surface. The caller owns the surface and should call cairo_surface_destroy() when done with it. This function always returns a valid pointer, but it will return a pointer to a "nil" surface if an error such as out of memory occurs. You can use cairo_surface_status() to check for this.
	 */
	public static ImageSurface create(cairo_format_t format, int width, int height)
	{
		// cairo_surface_t * cairo_image_surface_create (cairo_format_t format,  int width,  int height);
		auto p = cairo_image_surface_create(format, width, height);
		
		if(p is null)
		{
			return null;
		}
		
		return new ImageSurface(cast(cairo_surface_t*) p);
	}
	
	/**
	 * Creates an image surface for the provided pixel data. The output
	 * buffer must be kept around until the cairo_surface_t is destroyed
	 * or cairo_surface_finish() is called on the surface. The initial
	 * contents of data will be used as the initial image contents; you
	 * must explicitly clear the buffer, using, for example,
	 * cairo_rectangle() and cairo_fill() if you want it cleared.
	 * Note that the stride may be larger than
	 * width*bytes_per_pixel to provide proper alignment for each pixel
	 * and row. This alignment is required to allow high-performance rendering
	 * within cairo. The correct way to obtain a legal stride value is to
	 * call cairo_format_stride_for_width() with the desired format and
	 * maximum image width value, and then use the resulting stride value
	 * to allocate the data and to create the image surface. See
	 * cairo_format_stride_for_width() for example code.
	 * Since 1.0
	 * Params:
	 * data = a pointer to a buffer supplied by the application in which
	 * to write contents. This pointer must be suitably aligned for any
	 * kind of variable, (for example, a pointer returned by malloc).
	 * format = the format of pixels in the buffer
	 * width = the width of the image to be stored in the buffer
	 * height = the height of the image to be stored in the buffer
	 * stride = the number of bytes between the start of rows in the
	 * buffer as allocated. This value should always be computed by
	 * cairo_format_stride_for_width() before allocating the data
	 * buffer.
	 * Returns: a pointer to the newly created surface. The caller owns the surface and should call cairo_surface_destroy() when done with it. This function always returns a valid pointer, but it will return a pointer to a "nil" surface in the case of an error such as out of memory or an invalid stride value. In case of invalid stride value the error status of the returned surface will be CAIRO_STATUS_INVALID_STRIDE. You can use cairo_surface_status() to check for this. See cairo_surface_set_user_data() for a means of attaching a destroy-notification fallback to the surface if necessary.
	 */
	public static ImageSurface createForData(ubyte* data, cairo_format_t format, int width, int height, int stride)
	{
		// cairo_surface_t * cairo_image_surface_create_for_data (unsigned char *data,  cairo_format_t format,  int width,  int height,  int stride);
		auto p = cairo_image_surface_create_for_data(data, format, width, height, stride);
		
		if(p is null)
		{
			return null;
		}
		
		return new ImageSurface(cast(cairo_surface_t*) p);
	}
	
	/**
	 * Get a pointer to the data of the image surface, for direct
	 * inspection or modification.
	 * A call to cairo_surface_flush() is required before accessing the
	 * pixel data to ensure that all pending drawing operations are
	 * finished. A call to cairo_surface_mark_dirty() is required after
	 * the data is modified.
	 * Since 1.2
	 * Returns: a pointer to the image data of this surface or NULL if surface is not an image surface, or if cairo_surface_finish() has been called.
	 */
	public ubyte* getData()
	{
		// unsigned char * cairo_image_surface_get_data (cairo_surface_t *surface);
		return cairo_image_surface_get_data(cairo_surface);
	}
	
	/**
	 * Get the format of the surface.
	 * Since 1.2
	 * Returns: the format of the surface
	 */
	public cairo_format_t getFormat()
	{
		// cairo_format_t cairo_image_surface_get_format (cairo_surface_t *surface);
		return cairo_image_surface_get_format(cairo_surface);
	}
	
	/**
	 * Get the width of the image surface in pixels.
	 * Since 1.0
	 * Returns: the width of the surface in pixels.
	 */
	public int getWidth()
	{
		// int cairo_image_surface_get_width (cairo_surface_t *surface);
		return cairo_image_surface_get_width(cairo_surface);
	}
	
	/**
	 * Get the height of the image surface in pixels.
	 * Since 1.0
	 * Returns: the height of the surface in pixels.
	 */
	public int getHeight()
	{
		// int cairo_image_surface_get_height (cairo_surface_t *surface);
		return cairo_image_surface_get_height(cairo_surface);
	}
	
	/**
	 * Get the stride of the image surface in bytes
	 * Since 1.2
	 * Returns: the stride of the image surface in bytes (or 0 if surface is not an image surface). The stride is the distance in bytes from the beginning of one row of the image data to the beginning of the next row.
	 */
	public int getStride()
	{
		// int cairo_image_surface_get_stride (cairo_surface_t *surface);
		return cairo_image_surface_get_stride(cairo_surface);
	}
	
	/**
	 * Creates a new image surface and initializes the contents to the
	 * given PNG file.
	 * Since 1.0
	 * Params:
	 * filename = name of PNG file to load
	 * Returns: a new cairo_surface_t initialized with the contents of the PNG file, or a "nil" surface if any error occurred. A nil surface can be checked for with cairo_surface_status(surface) which
	 */
	public static ImageSurface createFromPng(string filename)
	{
		// cairo_surface_t * cairo_image_surface_create_from_png (const char *filename);
		auto p = cairo_image_surface_create_from_png(Str.toStringz(filename));
		
		if(p is null)
		{
			return null;
		}
		
		return new ImageSurface(cast(cairo_surface_t*) p);
	}
	
	/**
	 * Creates a new image surface from PNG data read incrementally
	 * via the read_func function.
	 * Since 1.0
	 * Params:
	 * readFunc = function called to read the data of the file
	 * closure = data to pass to read_func.
	 * Returns: a new cairo_surface_t initialized with the contents of the PNG file or a "nil" surface if the data read is not a valid PNG image or memory could not be allocated for the operation. A nil surface can be checked for with cairo_surface_status(surface) which
	 */
	public static ImageSurface createFromPngStream(cairo_read_func_t readFunc, void* closure)
	{
		// cairo_surface_t * cairo_image_surface_create_from_png_stream  (cairo_read_func_t read_func,  void *closure);
		auto p = cairo_image_surface_create_from_png_stream(readFunc, closure);
		
		if(p is null)
		{
			return null;
		}
		
		return new ImageSurface(cast(cairo_surface_t*) p);
	}
	
	/**
	 * Writes the contents of surface to a new file filename as a PNG
	 * image.
	 * Since 1.0
	 * Params:
	 * filename = the name of a file to write to
	 * Returns: CAIRO_STATUS_SUCCESS if the PNG file was written successfully. Otherwise, CAIRO_STATUS_NO_MEMORY if memory could not be allocated for the operation or CAIRO_STATUS_SURFACE_TYPE_MISMATCH if the surface does not have pixel contents, or CAIRO_STATUS_WRITE_ERROR if an I/O error occurs while attempting to write the file.
	 */
	public cairo_status_t writeToPng(string filename)
	{
		// cairo_status_t cairo_surface_write_to_png (cairo_surface_t *surface,  const char *filename);
		return cairo_surface_write_to_png(cairo_surface, Str.toStringz(filename));
	}
	
	/**
	 * Writes the image surface to the write function.
	 * Since 1.0
	 * Params:
	 * writeFunc = a cairo_write_func_t
	 * closure = closure data for the write function
	 * Returns: CAIRO_STATUS_SUCCESS if the PNG file was written successfully. Otherwise, CAIRO_STATUS_NO_MEMORY is returned if memory could not be allocated for the operation, CAIRO_STATUS_SURFACE_TYPE_MISMATCH if the surface does not have pixel contents.
	 */
	public cairo_status_t writeToPngStream(cairo_write_func_t writeFunc, void* closure)
	{
		// cairo_status_t cairo_surface_write_to_png_stream (cairo_surface_t *surface,  cairo_write_func_t write_func,  void *closure);
		return cairo_surface_write_to_png_stream(cairo_surface, writeFunc, closure);
	}
}