mirror of
https://github.com/netsurf-browser/netsurf
synced 2024-11-28 09:13:08 +03:00
114 lines
2.3 KiB
C
114 lines
2.3 KiB
C
/*
|
|
* This file is part of NetSurf, http://netsurf.sourceforge.net/
|
|
* Licensed under the GNU General Public License,
|
|
* http://www.opensource.org/licenses/gpl-license
|
|
* Copyright 2004 James Bursa <bursa@users.sourceforge.net>
|
|
*/
|
|
|
|
/** \file
|
|
* Generic bitmap handling (dummy debug implementation).
|
|
*
|
|
* This implements the interface given by desktop/bitmap.h using a simple
|
|
* buffer.
|
|
*/
|
|
|
|
#include <assert.h>
|
|
#include <stdbool.h>
|
|
#include <stdlib.h>
|
|
#include "netsurf/image/bitmap.h"
|
|
|
|
|
|
struct bitmap {
|
|
int width;
|
|
char pixels[1];
|
|
};
|
|
|
|
|
|
/**
|
|
* Create a bitmap.
|
|
*
|
|
* \param width width of image in pixels
|
|
* \param height width of image in pixels
|
|
* \return an opaque struct bitmap, or NULL on memory exhaustion
|
|
*/
|
|
|
|
struct bitmap *bitmap_create(int width, int height)
|
|
{
|
|
struct bitmap *bitmap;
|
|
bitmap = calloc(sizeof *bitmap + width * height * 4, 1);
|
|
if (bitmap)
|
|
bitmap->width = width;
|
|
return bitmap;
|
|
}
|
|
|
|
|
|
/**
|
|
* Return a pointer to the pixel data in a bitmap.
|
|
*
|
|
* \param bitmap a bitmap, as returned by bitmap_create()
|
|
* \return pointer to the pixel buffer
|
|
*
|
|
* The pixel data is packed as BITMAP_FORMAT, possibly with padding at the end
|
|
* of rows. The width of a row in bytes is given by bitmap_get_rowstride().
|
|
*/
|
|
|
|
char *bitmap_get_buffer(struct bitmap *bitmap)
|
|
{
|
|
assert(bitmap);
|
|
return bitmap->pixels;
|
|
}
|
|
|
|
|
|
/**
|
|
* Find the width of a pixel row in bytes.
|
|
*
|
|
* \param bitmap a bitmap, as returned by bitmap_create()
|
|
* \return width of a pixel row in the bitmap
|
|
*/
|
|
|
|
size_t bitmap_get_rowstride(struct bitmap *bitmap)
|
|
{
|
|
assert(bitmap);
|
|
return bitmap->width * 4;
|
|
}
|
|
|
|
|
|
/**
|
|
* Free a bitmap.
|
|
*
|
|
* \param bitmap a bitmap, as returned by bitmap_create()
|
|
*/
|
|
|
|
void bitmap_destroy(struct bitmap *bitmap)
|
|
{
|
|
assert(bitmap);
|
|
free(bitmap);
|
|
}
|
|
|
|
|
|
/**
|
|
* Render a bitmap.
|
|
*/
|
|
|
|
bool bitmap_redraw(struct content *c, int x, int y,
|
|
int width, int height,
|
|
int clip_x0, int clip_y0, int clip_x1, int clip_y1,
|
|
float scale, unsigned long background_colour)
|
|
{
|
|
return true;
|
|
}
|
|
|
|
|
|
/**
|
|
* Save a bitmap in the platform's native format.
|
|
*
|
|
* \param bitmap a bitmap, as returned by bitmap_create()
|
|
* \param path pathname for file
|
|
* \return true on success, false on error and error reported
|
|
*/
|
|
|
|
bool bitmap_save(struct bitmap *bitmap, const char *path)
|
|
{
|
|
return true;
|
|
}
|