mirror of
https://github.com/netsurf-browser/netsurf
synced 2024-12-28 06:49:41 +03:00
[project @ 2004-10-17 21:03:19 by bursa]
New target-independent interface for plotting and RISC OS screen implementation. svn path=/import/netsurf/; revision=1312
This commit is contained in:
James Bursa
parent
f0643f4a35
commit
0c898cdedf
47
desktop/plotters.h
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47
desktop/plotters.h
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/*
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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 2004 James Bursa <bursa@users.sourceforge.net>
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*/
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/** \file
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* Target independent plotting (interface).
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*/
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#ifndef _NETSURF_DESKTOP_PLOTTERS_H_
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#define _NETSURF_DESKTOP_PLOTTERS_H_
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#include <stdbool.h>
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#include "netsurf/css/css.h"
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struct bitmap;
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struct font_data;
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/** Set of target specific plotting functions. */
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struct plotter_table {
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bool (*clg)(colour c);
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bool (*rectangle)(int x0, int y0, int width, int height,
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colour c, bool dotted);
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bool (*line)(int x0, int y0, int x1, int y1, int width,
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colour c, bool dotted, bool dashed);
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bool (*polygon)(int *p, unsigned int n, colour fill);
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bool (*fill)(int x0, int y0, int x1, int y1, colour c);
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bool (*clip)(int x0, int y0, int x1, int y1);
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bool (*text)(int x, int y, struct font_data *font, const char *text,
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size_t length, colour bg, colour c);
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bool (*disc)(int x, int y, int radius, colour c);
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bool (*bitmap)(int x, int y, int width, int height,
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struct bitmap *bitmap, colour bg);
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bool (*bitmap_tile)(int x, int y, int width, int height,
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struct bitmap *bitmap, colour bg,
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bool repeat_x, bool repeat_y);
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};
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/** Current plotters, must be assigned before use. */
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extern struct plotter_table plot;
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#endif
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388
riscos/plotters.c
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388
riscos/plotters.c
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/*
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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 2004 James Bursa <bursa@users.sourceforge.net>
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*/
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/** \file
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* Target independent plotting (RISC OS screen implementation).
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*/
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#include "oslib/colourtrans.h"
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#include "oslib/draw.h"
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#include "oslib/os.h"
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#include "netsurf/desktop/plotters.h"
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#include "netsurf/render/font.h"
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#include "netsurf/riscos/bitmap.h"
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#include "netsurf/riscos/image.h"
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#include "netsurf/riscos/gui.h"
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#include "netsurf/utils/log.h"
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static bool ro_plot_clg(colour c);
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static bool ro_plot_rectangle(int x0, int y0, int width, int height,
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colour c, bool dotted);
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static bool ro_plot_line(int x0, int y0, int x1, int y1, int width,
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colour c, bool dotted, bool dashed);
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static bool ro_plot_polygon(int *p, unsigned int n, colour fill);
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static bool ro_plot_fill(int x0, int y0, int x1, int y1, colour c);
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static bool ro_plot_clip(int clip_x0, int clip_y0,
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int clip_x1, int clip_y1);
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static bool ro_plot_text(int x, int y, struct font_data *font,
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const char *text, size_t length, colour bg, colour c);
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static bool ro_plot_disc(int x, int y, int radius, colour colour);
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static bool ro_plot_bitmap(int x, int y, int width, int height,
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struct bitmap *bitmap, colour bg);
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static bool ro_plot_bitmap_tile(int x, int y, int width, int height,
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struct bitmap *bitmap, colour bg,
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bool repeat_x, bool repeat_y);
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struct plotter_table plot;
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const struct plotter_table ro_plotters = {
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ro_plot_clg,
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ro_plot_rectangle,
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ro_plot_line,
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ro_plot_polygon,
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ro_plot_fill,
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ro_plot_clip,
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ro_plot_text,
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ro_plot_disc,
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ro_plot_bitmap,
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ro_plot_bitmap_tile
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};
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int ro_plot_origin_x = 0;
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int ro_plot_origin_y = 0;
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os_trfm ro_plot_trfm = { {
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{ 0x10000, 0 },
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{ 0, 0x10000, },
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{ 0, 0 } } };
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bool ro_plot_clg(colour c)
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{
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os_error *error;
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error = xcolourtrans_set_gcol(c << 8,
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colourtrans_SET_BG | colourtrans_USE_ECFS,
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os_ACTION_OVERWRITE, 0, 0);
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if (error) {
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LOG(("xcolourtrans_set_gcol: 0x%x: %s",
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error->errnum, error->errmess));
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return false;
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}
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error = xos_clg();
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if (error) {
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LOG(("xos_clg: 0x%x: %s", error->errnum, error->errmess));
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return false;
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}
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return true;
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}
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bool ro_plot_rectangle(int x0, int y0, int width, int height,
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colour c, bool dotted)
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{
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os_plot_code plot_code = (dotted ? os_PLOT_DOTTED : os_PLOT_SOLID) |
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os_PLOT_BY;
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os_error *error;
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error = xcolourtrans_set_gcol(c << 8, 0, os_ACTION_OVERWRITE, 0, 0);
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if (error) {
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LOG(("xcolourtrans_set_gcol: 0x%x: %s",
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error->errnum, error->errmess));
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return false;
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}
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error = xos_plot(os_MOVE_TO,
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ro_plot_origin_x + x0 * 2,
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ro_plot_origin_y - y0 * 2);
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if (error) {
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LOG(("xos_plot: 0x%x: %s", error->errnum, error->errmess));
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return false;
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}
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error = xos_plot(plot_code, width * 2, 0);
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if (error) {
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LOG(("xos_plot: 0x%x: %s", error->errnum, error->errmess));
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return false;
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}
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error = xos_plot(plot_code, 0, -height * 2);
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if (error) {
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LOG(("xos_plot: 0x%x: %s", error->errnum, error->errmess));
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return false;
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}
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error = xos_plot(plot_code, -width * 2, 0);
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if (error) {
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LOG(("xos_plot: 0x%x: %s", error->errnum, error->errmess));
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return false;
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}
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error = xos_plot(plot_code, 0, height * 2);
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if (error) {
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LOG(("xos_plot: 0x%x: %s", error->errnum, error->errmess));
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return false;
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}
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return true;
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}
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static int path[] = { draw_MOVE_TO, 0, 0, draw_LINE_TO, 0, 0,
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draw_END_PATH, 0 };
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static const draw_line_style line_style = { draw_JOIN_MITRED,
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draw_CAP_BUTT, draw_CAP_BUTT, 0, 0x7fffffff,
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0, 0, 0, 0 };
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static const int dash_pattern_dotted[] = { 0, 1, 512 };
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static const int dash_pattern_dashed[] = { 0, 1, 2048 };
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bool ro_plot_line(int x0, int y0, int x1, int y1, int width,
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colour c, bool dotted, bool dashed)
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{
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const draw_dash_pattern *dash_pattern;
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os_error *error;
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if (dotted)
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dash_pattern = (const draw_dash_pattern *) &dash_pattern_dotted;
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else if (dashed)
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dash_pattern = (const draw_dash_pattern *) &dash_pattern_dashed;
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else
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dash_pattern = NULL;
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path[1] = (ro_plot_origin_x + x0 * 2) * 256;
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path[2] = (ro_plot_origin_y - y0 * 2) * 256;
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path[4] = (ro_plot_origin_x + x1 * 2) * 256;
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path[5] = (ro_plot_origin_y - y1 * 2) * 256;
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error = xcolourtrans_set_gcol(c << 8, 0, os_ACTION_OVERWRITE, 0, 0);
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if (error) {
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LOG(("xcolourtrans_set_gcol: 0x%x: %s",
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error->errnum, error->errmess));
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return false;
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}
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error = xdraw_stroke((draw_path *) path, 0, 0, 0, width * 256,
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&line_style, dash_pattern);
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if (error) {
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LOG(("xdraw_stroke: 0x%x: %s",
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error->errnum, error->errmess));
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return false;
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}
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return true;
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}
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bool ro_plot_polygon(int *p, unsigned int n, colour fill)
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{
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int path[n * 3 + 2];
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unsigned int i;
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os_error *error;
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for (i = 0; i != n; i++) {
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path[i * 3 + 0] = draw_LINE_TO;
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path[i * 3 + 1] = (ro_plot_origin_x + p[i * 2 + 0] * 2) * 256;
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path[i * 3 + 2] = (ro_plot_origin_y - p[i * 2 + 1] * 2) * 256;
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}
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path[0] = draw_MOVE_TO;
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path[n * 3] = draw_END_PATH;
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path[n * 3 + 1] = 0;
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error = xcolourtrans_set_gcol(fill << 8, 0, os_ACTION_OVERWRITE, 0, 0);
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if (error) {
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LOG(("xcolourtrans_set_gcol: 0x%x: %s",
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error->errnum, error->errmess));
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return false;
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}
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error = xdraw_fill((draw_path *) path, 0, 0, 0);
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if (error) {
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LOG(("xdraw_fill: 0x%x: %s",
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error->errnum, error->errmess));
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return false;
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}
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return true;
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}
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bool ro_plot_fill(int x0, int y0, int x1, int y1, colour c)
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{
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os_error *error;
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error = xcolourtrans_set_gcol(c << 8, colourtrans_USE_ECFS,
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os_ACTION_OVERWRITE, 0, 0);
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if (error) {
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LOG(("xcolourtrans_set_gcol: 0x%x: %s",
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error->errnum, error->errmess));
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return false;
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}
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error = xos_plot(os_MOVE_TO,
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ro_plot_origin_x + x0 * 2,
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ro_plot_origin_y - y0 * 2 - 1);
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if (error) {
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LOG(("xos_plot: 0x%x: %s", error->errnum, error->errmess));
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return false;
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}
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error = xos_plot(os_PLOT_RECTANGLE | os_PLOT_TO,
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ro_plot_origin_x + x1 * 2 - 1,
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ro_plot_origin_y - y1 * 2);
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if (error) {
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LOG(("xos_plot: 0x%x: %s", error->errnum, error->errmess));
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return false;
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}
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return true;
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}
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bool ro_plot_clip(int clip_x0, int clip_y0,
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int clip_x1, int clip_y1)
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{
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os_error *error;
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clip_x0 = ro_plot_origin_x + clip_x0 * 2;
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clip_y0 = ro_plot_origin_y - clip_y0 * 2 - 1;
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clip_x1 = ro_plot_origin_x + clip_x1 * 2 - 1;
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clip_y1 = ro_plot_origin_y - clip_y1 * 2;
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error = xos_set_graphics_window();
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if (error) {
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LOG(("xos_set_graphics_window: 0x%x: %s", error->errnum,
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error->errmess));
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return false;
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}
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error = xos_writec((char) (clip_x0 & 0xff));
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if (error) {
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LOG(("xos_writec: 0x%x: %s", error->errnum, error->errmess));
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return false;
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}
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error = xos_writec((char) (clip_x0 >> 8));
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if (error) {
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LOG(("xos_writec: 0x%x: %s", error->errnum, error->errmess));
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return false;
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}
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error = xos_writec((char) (clip_y1 & 0xff));
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if (error) {
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LOG(("xos_writec: 0x%x: %s", error->errnum, error->errmess));
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return false;
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}
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error = xos_writec((char) (clip_y1 >> 8));
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if (error) {
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LOG(("xos_writec: 0x%x: %s", error->errnum, error->errmess));
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return false;
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}
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error = xos_writec((char) (clip_x1 & 0xff));
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if (error) {
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LOG(("xos_writec: 0x%x: %s", error->errnum, error->errmess));
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return false;
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}
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error = xos_writec((char) (clip_x1 >> 8));
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if (error) {
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LOG(("xos_writec: 0x%x: %s", error->errnum, error->errmess));
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return false;
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}
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error = xos_writec((char) (clip_y0 & 0xff));
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if (error) {
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LOG(("xos_writec: 0x%x: %s", error->errnum, error->errmess));
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return false;
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}
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error = xos_writec((char) (clip_y0 >> 8));
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if (error) {
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LOG(("xos_writec: 0x%x: %s", error->errnum, error->errmess));
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return false;
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}
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return true;
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}
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bool ro_plot_text(int x, int y, struct font_data *font,
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const char *text, size_t length, colour bg, colour c)
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{
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os_error *error;
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error = xcolourtrans_set_font_colours(font->handle,
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bg << 8, c << 8, 14, 0, 0, 0);
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if (error) {
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LOG(("xcolourtrans_set_font_colours: 0x%x: %s",
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error->errnum, error->errmess));
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return false;
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}
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nsfont_paint(font, text, length,
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ro_plot_origin_x + x * 2,
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ro_plot_origin_y - y * 2,
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&ro_plot_trfm);
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return true;
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}
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bool ro_plot_disc(int x, int y, int radius, colour colour)
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{
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os_error *error;
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error = xcolourtrans_set_gcol(colour << 8, 0,
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os_ACTION_OVERWRITE, 0, 0);
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if (error) {
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LOG(("xcolourtrans_set_gcol: 0x%x: %s",
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error->errnum, error->errmess));
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return false;
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}
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error = xos_plot(os_MOVE_TO,
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ro_plot_origin_x + x * 2,
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ro_plot_origin_y - y * 2);
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if (error) {
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LOG(("xos_plot: 0x%x: %s", error->errnum, error->errmess));
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return false;
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}
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error = xos_plot(os_PLOT_CIRCLE | os_PLOT_BY, radius, 0);
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if (error) {
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LOG(("xos_plot: 0x%x: %s", error->errnum, error->errmess));
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return false;
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}
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return true;
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}
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bool ro_plot_bitmap(int x, int y, int width, int height,
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struct bitmap *bitmap, colour bg)
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{
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return image_redraw(&bitmap->sprite_area,
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ro_plot_origin_x + x * 2,
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ro_plot_origin_y - y * 2,
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width, height,
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bitmap->width,
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bitmap->height,
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bg,
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false, false,
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bitmap->opaque ? IMAGE_PLOT_TINCT_OPAQUE :
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IMAGE_PLOT_TINCT_ALPHA);
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}
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bool ro_plot_bitmap_tile(int x, int y, int width, int height,
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struct bitmap *bitmap, colour bg,
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bool repeat_x, bool repeat_y)
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{
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return image_redraw(&bitmap->sprite_area,
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ro_plot_origin_x + x * 2,
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ro_plot_origin_y - y * 2,
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width, height,
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bitmap->width,
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bitmap->height,
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bg,
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repeat_x, repeat_y,
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bitmap->opaque ? IMAGE_PLOT_TINCT_OPAQUE :
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IMAGE_PLOT_TINCT_ALPHA);
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}
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/**
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* Set the scale for subsequent text plotting.
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*/
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void ro_plot_set_scale(float scale)
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{
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ro_plot_trfm.entries[0][0] = ro_plot_trfm.entries[1][1] =
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scale * 0x10000;
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}
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