mirror of
https://github.com/netsurf-browser/netsurf
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112 lines
3.1 KiB
C
112 lines
3.1 KiB
C
/*
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* This file is part of NetSurf, http://netsurf.sourceforge.net/
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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 2003 John M Bell <jmb202@ecs.soton.ac.uk>
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*/
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#include <assert.h>
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#include <string.h>
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#include <stdlib.h>
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#include "netsurf/content/content.h"
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#include "netsurf/riscos/draw.h"
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#include "netsurf/utils/utils.h"
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#include "netsurf/utils/log.h"
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#include "oslib/drawfile.h"
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void draw_create(struct content *c)
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{
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c->data.draw.data = xcalloc(0, 1);
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c->data.draw.length = 0;
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}
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void draw_process_data(struct content *c, char *data, unsigned long size)
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{
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c->data.draw.data = xrealloc(c->data.draw.data, c->data.draw.length + size);
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memcpy(c->data.draw.data + c->data.draw.length, data, size);
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c->data.draw.length += size;
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c->size += size;
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}
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int draw_convert(struct content *c, unsigned int width, unsigned int height)
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{
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os_error *error;
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os_trfm *matrix = xcalloc(1, sizeof(os_trfm));
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os_box *bbox = xcalloc(1, sizeof(os_box));
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/* Full size image (1:1) */
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matrix->entries[0][0] = 1 << 16;
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matrix->entries[0][1] = 0;
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matrix->entries[1][0] = 0;
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matrix->entries[1][1] = 1 << 16;
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matrix->entries[2][0] = 0;
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matrix->entries[2][1] = 0;
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/* BBox contents in Draw units (256*OS unit) */
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error = xdrawfile_bbox(0, (drawfile_diagram*)(c->data.draw.data),
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c->data.draw.length, matrix, bbox);
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if (error) {
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LOG(("error: %s", error->errmess));
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xfree(matrix);
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xfree(bbox);
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return 1;
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}
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/* c->width & c->height stored as (OS units/2)
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=> divide by 512 to convert from draw units */
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c->width = ((bbox->x1 - bbox->x0) / 512);
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c->height = ((bbox->y1 - bbox->y0) / 512);
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c->title = xcalloc(100, 1);
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sprintf(c->title, "Draw image (%lux%lu, %lu bytes)", c->width,
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c->height, c->data.draw.length);
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c->status = CONTENT_STATUS_DONE;
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xfree(matrix);
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xfree(bbox);
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return 0;
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}
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void draw_revive(struct content *c, unsigned int width, unsigned int height)
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{
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}
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void draw_reformat(struct content *c, unsigned int width, unsigned int height)
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{
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}
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void draw_destroy(struct content *c)
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{
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xfree(c->data.draw.data);
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xfree(c->title);
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}
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void draw_redraw(struct content *c, long x, long y,
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unsigned long width, unsigned long height,
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long clip_x0, long clip_y0, long clip_x1, long clip_y1)
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{
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os_error *error;
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unsigned int size;
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os_box bbox;
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os_trfm *matrix = xcalloc(1, sizeof(os_trfm));
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/* Scaled image. Transform units (65536*OS units) */
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matrix->entries[0][0] = ((width*65536) / (c->width*2));
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matrix->entries[0][1] = 0;
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matrix->entries[1][0] = 0;
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matrix->entries[1][1] = ((height*65536) / (c->height*2));
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/* Draw units. (x,y) = bottom left */
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matrix->entries[2][0] = x * 256;
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matrix->entries[2][1] = (y-height) * 256;
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xdrawfile_render(0, (drawfile_diagram*)(c->data.draw.data),
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c->data.draw.length, matrix, 0, 0);
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xfree(matrix);
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}
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