mirror of
https://github.com/netsurf-browser/netsurf
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6807b4208a
NetSurf includes are now done with ""s and other system includes with <>s as C intended. The scandeps tool has been updated to only look for ""ed includes, and to verify that the files exist in the tree before adding them to the dependency lines. The depend rule has therefore been augmented to make sure the autogenerated files are built before it is run. This is untested under self-hosted RISC OS builds. All else tested and works. svn path=/trunk/netsurf/; revision=3307
137 lines
2.9 KiB
C
137 lines
2.9 KiB
C
/*
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* This file is part of NetSurf, http://netsurf-browser.org/
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* Licensed under the GNU General Public License,
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* http://www.opensource.org/licenses/gpl-license
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* Copyright 2004 James Bursa <bursa@users.sourceforge.net>
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*/
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/** \file
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* Generic bitmap handling (dummy debug implementation).
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*
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* This implements the interface given by desktop/bitmap.h using a simple
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* buffer.
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*/
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#include <assert.h>
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#include <stdbool.h>
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#include <stdlib.h>
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#include "image/bitmap.h"
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struct bitmap {
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int width;
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char pixels[1];
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};
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/**
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* Create a bitmap.
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*
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* \param width width of image in pixels
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* \param height width of image in pixels
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* \param state a flag word indicating the initial state
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* \return an opaque struct bitmap, or NULL on memory exhaustion
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*/
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struct bitmap *bitmap_create(int width, int height, unsigned int state)
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{
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struct bitmap *bitmap;
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bitmap = calloc(sizeof *bitmap + width * height * 4, 1);
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if (bitmap)
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bitmap->width = width;
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return bitmap;
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}
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/**
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* Return a pointer to the pixel data in a bitmap.
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*
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* \param bitmap a bitmap, as returned by bitmap_create()
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* \return pointer to the pixel buffer
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*
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* The pixel data is packed as BITMAP_FORMAT, possibly with padding at the end
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* of rows. The width of a row in bytes is given by bitmap_get_rowstride().
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*/
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char *bitmap_get_buffer(struct bitmap *bitmap)
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{
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assert(bitmap);
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return bitmap->pixels;
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}
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/**
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* Find the width of a pixel row in bytes.
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*
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* \param bitmap a bitmap, as returned by bitmap_create()
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* \return width of a pixel row in the bitmap
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*/
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size_t bitmap_get_rowstride(struct bitmap *bitmap)
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{
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assert(bitmap);
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return bitmap->width * 4;
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}
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/**
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* Free a bitmap.
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*
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* \param bitmap a bitmap, as returned by bitmap_create()
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*/
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void bitmap_destroy(struct bitmap *bitmap)
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{
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assert(bitmap);
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free(bitmap);
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}
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/**
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* Render a bitmap.
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*/
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bool bitmap_redraw(struct content *c, int x, int y,
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int width, int height,
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int clip_x0, int clip_y0, int clip_x1, int clip_y1,
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float scale, unsigned long background_colour)
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{
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return true;
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}
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/**
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* Save a bitmap in the platform's native format.
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*
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* \param bitmap a bitmap, as returned by bitmap_create()
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* \param path pathname for file
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* \return true on success, false on error and error reported
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*/
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bool bitmap_save(struct bitmap *bitmap, const char *path)
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{
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return true;
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}
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/**
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* The bitmap image has changed, so flush any persistant cache.
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*
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* \param bitmap a bitmap, as returned by bitmap_create()
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*/
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void bitmap_modified(struct bitmap *bitmap) {
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}
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/**
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* The bitmap image can be suspended.
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*
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* \param bitmap a bitmap, as returned by bitmap_create()
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* \param private_word a private word to be returned later
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* \param suspend the function to be called upon suspension
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* \param resume the function to be called when resuming
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*/
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void bitmap_set_suspendable(struct bitmap *bitmap, void *private_word,
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void (*invalidate)(struct bitmap *bitmap, void *private_word)) {
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}
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