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/*
* Copyright 2004 James Bursa <bursa@users.sourceforge.net>
*
* This file is part of NetSurf, http://www.netsurf-browser.org/
*
* NetSurf is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* NetSurf 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/** \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 "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
* \param state a flag word indicating the initial state
* \return an opaque struct bitmap, or NULL on memory exhaustion
*/
struct bitmap *bitmap_create(int width, int height, unsigned int state)
{
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;
}
/**
* The bitmap image has changed, so flush any persistant cache.
*
* \param bitmap a bitmap, as returned by bitmap_create()
*/
void bitmap_modified(struct bitmap *bitmap) {
}
/**
* The bitmap image can be suspended.
*
* \param bitmap a bitmap, as returned by bitmap_create()
* \param private_word a private word to be returned later
* \param suspend the function to be called upon suspension
* \param resume the function to be called when resuming
*/
void bitmap_set_suspendable(struct bitmap *bitmap, void *private_word,
void (*invalidate)(struct bitmap *bitmap, void *private_word)) {
}
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