mirror of
https://github.com/netsurf-browser/netsurf
synced 2024-12-02 19:06:57 +03:00
17be8cf216
The netsurf core is driven from numerous operation tables most of which are now set through a common netsurf_register() interface. The font and plotting interfaces are currently separate and unlike all the other operation tables are modified for differing contexts. This change moves the font operations alongside all the other operations table and remove unnecessary interaction with the renderers font internals. Further this also removes the need for css internals to be visible in frontends.
539 lines
13 KiB
C
539 lines
13 KiB
C
/*
|
|
* 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
|
|
* Target independent plotting (RISC OS screen implementation).
|
|
*/
|
|
|
|
#include <stdbool.h>
|
|
#include <math.h>
|
|
#include "oslib/colourtrans.h"
|
|
#include "oslib/draw.h"
|
|
#include "oslib/os.h"
|
|
|
|
#include "utils/log.h"
|
|
#include "desktop/plotters.h"
|
|
|
|
#include "riscos/bitmap.h"
|
|
#include "riscos/image.h"
|
|
#include "riscos/gui.h"
|
|
#include "riscos/font.h"
|
|
#include "riscos/oslib_pre7.h"
|
|
|
|
static bool ro_plot_rectangle(int x0, int y0, int x1, int y1, const plot_style_t *style);
|
|
static bool ro_plot_line(int x0, int y0, int x1, int y1, const plot_style_t *style);
|
|
static bool ro_plot_draw_path(const draw_path * const path, int width,
|
|
colour c, bool dotted, bool dashed);
|
|
static bool ro_plot_polygon(const int *p, unsigned int n, const plot_style_t *style);
|
|
static bool ro_plot_path(const float *p, unsigned int n, colour fill, float width,
|
|
colour c, const float transform[6]);
|
|
static bool ro_plot_clip(const struct rect *clip);
|
|
static bool ro_plot_text(int x, int y, const char *text, size_t length,
|
|
const plot_font_style_t *fstyle);
|
|
static bool ro_plot_disc(int x, int y, int radius, const plot_style_t *style);
|
|
static bool ro_plot_arc(int x, int y, int radius, int angle1, int angle2,
|
|
const plot_style_t *style);
|
|
static bool ro_plot_bitmap(int x, int y, int width, int height,
|
|
struct bitmap *bitmap, colour bg,
|
|
bitmap_flags_t flags);
|
|
|
|
|
|
struct plotter_table plot;
|
|
|
|
const struct plotter_table ro_plotters = {
|
|
.rectangle = ro_plot_rectangle,
|
|
.line = ro_plot_line,
|
|
.polygon = ro_plot_polygon,
|
|
.clip = ro_plot_clip,
|
|
.text = ro_plot_text,
|
|
.disc = ro_plot_disc,
|
|
.arc = ro_plot_arc,
|
|
.bitmap = ro_plot_bitmap,
|
|
.path = ro_plot_path,
|
|
.option_knockout = true,
|
|
};
|
|
|
|
int ro_plot_origin_x = 0;
|
|
int ro_plot_origin_y = 0;
|
|
|
|
/** One version of the A9home OS is incapable of drawing patterned lines */
|
|
bool ro_plot_patterned_lines = true;
|
|
|
|
|
|
|
|
bool ro_plot_rectangle(int x0, int y0, int x1, int y1, const plot_style_t *style)
|
|
{
|
|
if (style->fill_type != PLOT_OP_TYPE_NONE) {
|
|
os_error *error;
|
|
error = xcolourtrans_set_gcol(style->fill_colour << 8,
|
|
colourtrans_USE_ECFS_GCOL,
|
|
os_ACTION_OVERWRITE, 0, 0);
|
|
if (error) {
|
|
LOG(("xcolourtrans_set_gcol: 0x%x: %s",
|
|
error->errnum, error->errmess));
|
|
return false;
|
|
}
|
|
|
|
error = xos_plot(os_MOVE_TO,
|
|
ro_plot_origin_x + x0 * 2,
|
|
ro_plot_origin_y - y0 * 2 - 1);
|
|
if (error) {
|
|
LOG(("xos_plot: 0x%x: %s", error->errnum, error->errmess));
|
|
return false;
|
|
}
|
|
|
|
error = xos_plot(os_PLOT_RECTANGLE | os_PLOT_TO,
|
|
ro_plot_origin_x + x1 * 2 - 1,
|
|
ro_plot_origin_y - y1 * 2);
|
|
if (error) {
|
|
LOG(("xos_plot: 0x%x: %s", error->errnum, error->errmess));
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if (style->stroke_type != PLOT_OP_TYPE_NONE) {
|
|
bool dotted = false;
|
|
bool dashed = false;
|
|
|
|
const int path[] = { draw_MOVE_TO,
|
|
(ro_plot_origin_x + x0 * 2) * 256,
|
|
(ro_plot_origin_y - y0 * 2 - 1) * 256,
|
|
draw_LINE_TO,
|
|
(ro_plot_origin_x + (x1) * 2) * 256,
|
|
(ro_plot_origin_y - y0 * 2 - 1) * 256,
|
|
draw_LINE_TO,
|
|
(ro_plot_origin_x + (x1) * 2) * 256,
|
|
(ro_plot_origin_y - (y1) * 2 - 1) * 256,
|
|
draw_LINE_TO,
|
|
(ro_plot_origin_x + x0 * 2) * 256,
|
|
(ro_plot_origin_y - (y1) * 2 - 1) * 256,
|
|
draw_CLOSE_LINE,
|
|
(ro_plot_origin_x + x0 * 2) * 256,
|
|
(ro_plot_origin_y - y0 * 2 - 1) * 256,
|
|
draw_END_PATH };
|
|
|
|
if (style->stroke_type == PLOT_OP_TYPE_DOT)
|
|
dotted = true;
|
|
|
|
if (style->stroke_type == PLOT_OP_TYPE_DASH)
|
|
dashed = true;
|
|
|
|
ro_plot_draw_path((const draw_path *)path,
|
|
style->stroke_width,
|
|
style->stroke_colour,
|
|
dotted, dashed);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
|
|
bool ro_plot_line(int x0, int y0, int x1, int y1, const plot_style_t *style)
|
|
{
|
|
if (style->stroke_type != PLOT_OP_TYPE_NONE) {
|
|
const int path[] = { draw_MOVE_TO,
|
|
(ro_plot_origin_x + x0 * 2) * 256,
|
|
(ro_plot_origin_y - y0 * 2 - 1) * 256,
|
|
draw_LINE_TO,
|
|
(ro_plot_origin_x + x1 * 2) * 256,
|
|
(ro_plot_origin_y - y1 * 2 - 1) * 256,
|
|
draw_END_PATH };
|
|
bool dotted = false;
|
|
bool dashed = false;
|
|
|
|
if (style->stroke_type == PLOT_OP_TYPE_DOT)
|
|
dotted = true;
|
|
|
|
if (style->stroke_type == PLOT_OP_TYPE_DASH)
|
|
dashed = true;
|
|
|
|
return ro_plot_draw_path((const draw_path *)path,
|
|
style->stroke_width,
|
|
style->stroke_colour,
|
|
dotted, dashed);
|
|
}
|
|
return true;
|
|
}
|
|
|
|
|
|
bool ro_plot_draw_path(const draw_path * const path, int width,
|
|
colour c, bool dotted, bool dashed)
|
|
{
|
|
static const draw_line_style line_style = { draw_JOIN_MITRED,
|
|
draw_CAP_BUTT, draw_CAP_BUTT, 0, 0x7fffffff,
|
|
0, 0, 0, 0 };
|
|
draw_dash_pattern dash = { 0, 1, { 512 } };
|
|
const draw_dash_pattern *dash_pattern = 0;
|
|
os_error *error;
|
|
|
|
if (width < 1)
|
|
width = 1;
|
|
|
|
if (ro_plot_patterned_lines) {
|
|
if (dotted) {
|
|
dash.elements[0] = 512 * width;
|
|
dash_pattern = ‐
|
|
} else if (dashed) {
|
|
dash.elements[0] = 1536 * width;
|
|
dash_pattern = ‐
|
|
}
|
|
}
|
|
|
|
error = xcolourtrans_set_gcol(c << 8, 0, os_ACTION_OVERWRITE, 0, 0);
|
|
if (error) {
|
|
LOG(("xcolourtrans_set_gcol: 0x%x: %s",
|
|
error->errnum, error->errmess));
|
|
return false;
|
|
}
|
|
|
|
error = xdraw_stroke(path, 0, 0, 0, width * 2 * 256,
|
|
&line_style, dash_pattern);
|
|
if (error) {
|
|
LOG(("xdraw_stroke: 0x%x: %s",
|
|
error->errnum, error->errmess));
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
|
|
bool ro_plot_polygon(const int *p, unsigned int n, const plot_style_t *style)
|
|
{
|
|
int path[n * 3 + 2];
|
|
unsigned int i;
|
|
os_error *error;
|
|
|
|
for (i = 0; i != n; i++) {
|
|
path[i * 3 + 0] = draw_LINE_TO;
|
|
path[i * 3 + 1] = (ro_plot_origin_x + p[i * 2 + 0] * 2) * 256;
|
|
path[i * 3 + 2] = (ro_plot_origin_y - p[i * 2 + 1] * 2) * 256;
|
|
}
|
|
path[0] = draw_MOVE_TO;
|
|
path[n * 3] = draw_END_PATH;
|
|
path[n * 3 + 1] = 0;
|
|
|
|
error = xcolourtrans_set_gcol(style->fill_colour << 8, 0, os_ACTION_OVERWRITE, 0, 0);
|
|
if (error) {
|
|
LOG(("xcolourtrans_set_gcol: 0x%x: %s",
|
|
error->errnum, error->errmess));
|
|
return false;
|
|
}
|
|
error = xdraw_fill((draw_path *) path, 0, 0, 0);
|
|
if (error) {
|
|
LOG(("xdraw_fill: 0x%x: %s",
|
|
error->errnum, error->errmess));
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
|
|
bool ro_plot_path(const float *p, unsigned int n, colour fill, float width,
|
|
colour c, const float transform[6])
|
|
{
|
|
static const draw_line_style line_style = { draw_JOIN_MITRED,
|
|
draw_CAP_BUTT, draw_CAP_BUTT, 0, 0x7fffffff,
|
|
0, 0, 0, 0 };
|
|
int *path = 0;
|
|
unsigned int i;
|
|
os_trfm trfm;
|
|
os_error *error;
|
|
|
|
if (n == 0)
|
|
return true;
|
|
|
|
if (p[0] != PLOTTER_PATH_MOVE) {
|
|
LOG(("path doesn't start with a move"));
|
|
goto error;
|
|
}
|
|
|
|
path = malloc(sizeof *path * (n + 10));
|
|
if (!path) {
|
|
LOG(("out of memory"));
|
|
goto error;
|
|
}
|
|
|
|
for (i = 0; i < n; ) {
|
|
if (p[i] == PLOTTER_PATH_MOVE) {
|
|
path[i] = draw_MOVE_TO;
|
|
path[i + 1] = p[i + 1] * 2 * 256;
|
|
path[i + 2] = -p[i + 2] * 2 * 256;
|
|
i += 3;
|
|
} else if (p[i] == PLOTTER_PATH_CLOSE) {
|
|
path[i] = draw_CLOSE_LINE;
|
|
i++;
|
|
} else if (p[i] == PLOTTER_PATH_LINE) {
|
|
path[i] = draw_LINE_TO;
|
|
path[i + 1] = p[i + 1] * 2 * 256;
|
|
path[i + 2] = -p[i + 2] * 2 * 256;
|
|
i += 3;
|
|
} else if (p[i] == PLOTTER_PATH_BEZIER) {
|
|
path[i] = draw_BEZIER_TO;
|
|
path[i + 1] = p[i + 1] * 2 * 256;
|
|
path[i + 2] = -p[i + 2] * 2 * 256;
|
|
path[i + 3] = p[i + 3] * 2 * 256;
|
|
path[i + 4] = -p[i + 4] * 2 * 256;
|
|
path[i + 5] = p[i + 5] * 2 * 256;
|
|
path[i + 6] = -p[i + 6] * 2 * 256;
|
|
i += 7;
|
|
} else {
|
|
LOG(("bad path command %f", p[i]));
|
|
goto error;
|
|
}
|
|
}
|
|
path[i] = draw_END_PATH;
|
|
path[i + 1] = 0;
|
|
|
|
trfm.entries[0][0] = transform[0] * 0x10000;
|
|
trfm.entries[0][1] = transform[1] * 0x10000;
|
|
trfm.entries[1][0] = transform[2] * 0x10000;
|
|
trfm.entries[1][1] = transform[3] * 0x10000;
|
|
trfm.entries[2][0] = (ro_plot_origin_x + transform[4] * 2) * 256;
|
|
trfm.entries[2][1] = (ro_plot_origin_y - transform[5] * 2) * 256;
|
|
|
|
if (fill != NS_TRANSPARENT) {
|
|
error = xcolourtrans_set_gcol(fill << 8, 0,
|
|
os_ACTION_OVERWRITE, 0, 0);
|
|
if (error) {
|
|
LOG(("xcolourtrans_set_gcol: 0x%x: %s",
|
|
error->errnum, error->errmess));
|
|
goto error;
|
|
}
|
|
|
|
error = xdraw_fill((draw_path *) path, 0, &trfm, 0);
|
|
if (error) {
|
|
LOG(("xdraw_stroke: 0x%x: %s",
|
|
error->errnum, error->errmess));
|
|
goto error;
|
|
}
|
|
}
|
|
|
|
if (c != NS_TRANSPARENT) {
|
|
error = xcolourtrans_set_gcol(c << 8, 0,
|
|
os_ACTION_OVERWRITE, 0, 0);
|
|
if (error) {
|
|
LOG(("xcolourtrans_set_gcol: 0x%x: %s",
|
|
error->errnum, error->errmess));
|
|
goto error;
|
|
}
|
|
|
|
error = xdraw_stroke((draw_path *) path, 0, &trfm, 0,
|
|
width * 2 * 256, &line_style, 0);
|
|
if (error) {
|
|
LOG(("xdraw_stroke: 0x%x: %s",
|
|
error->errnum, error->errmess));
|
|
goto error;
|
|
}
|
|
}
|
|
|
|
free(path);
|
|
return true;
|
|
|
|
error:
|
|
free(path);
|
|
return false;
|
|
}
|
|
|
|
|
|
|
|
|
|
bool ro_plot_clip(const struct rect *clip)
|
|
{
|
|
os_error *error;
|
|
char buf[12];
|
|
|
|
int clip_x0 = ro_plot_origin_x + clip->x0 * 2;
|
|
int clip_y0 = ro_plot_origin_y - clip->y0 * 2 - 1;
|
|
int clip_x1 = ro_plot_origin_x + clip->x1 * 2 - 1;
|
|
int clip_y1 = ro_plot_origin_y - clip->y1 * 2;
|
|
|
|
if (clip_x1 < clip_x0 || clip_y0 < clip_y1) {
|
|
LOG(("bad clip rectangle %i %i %i %i",
|
|
clip_x0, clip_y0, clip_x1, clip_y1));
|
|
return false;
|
|
}
|
|
|
|
buf[0] = os_VDU_SET_GRAPHICS_WINDOW;
|
|
buf[1] = clip_x0;
|
|
buf[2] = clip_x0 >> 8;
|
|
buf[3] = clip_y1;
|
|
buf[4] = clip_y1 >> 8;
|
|
buf[5] = clip_x1;
|
|
buf[6] = clip_x1 >> 8;
|
|
buf[7] = clip_y0;
|
|
buf[8] = clip_y0 >> 8;
|
|
|
|
error = xos_writen(buf, 9);
|
|
if (error) {
|
|
LOG(("xos_writen: 0x%x: %s", error->errnum, error->errmess));
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
|
|
bool ro_plot_text(int x, int y, const char *text, size_t length,
|
|
const plot_font_style_t *fstyle)
|
|
{
|
|
os_error *error;
|
|
|
|
error = xcolourtrans_set_font_colours(font_CURRENT,
|
|
fstyle->background << 8, fstyle->foreground << 8,
|
|
14, 0, 0, 0);
|
|
if (error) {
|
|
LOG(("xcolourtrans_set_font_colours: 0x%x: %s",
|
|
error->errnum, error->errmess));
|
|
return false;
|
|
}
|
|
|
|
return nsfont_paint(fstyle, text, length,
|
|
ro_plot_origin_x + x * 2,
|
|
ro_plot_origin_y - y * 2);
|
|
}
|
|
|
|
|
|
bool ro_plot_disc(int x, int y, int radius, const plot_style_t *style)
|
|
{
|
|
os_error *error;
|
|
if (style->fill_type != PLOT_OP_TYPE_NONE) {
|
|
error = xcolourtrans_set_gcol(style->fill_colour << 8, 0,
|
|
os_ACTION_OVERWRITE, 0, 0);
|
|
if (error) {
|
|
LOG(("xcolourtrans_set_gcol: 0x%x: %s",
|
|
error->errnum, error->errmess));
|
|
return false;
|
|
}
|
|
error = xos_plot(os_MOVE_TO,
|
|
ro_plot_origin_x + x * 2,
|
|
ro_plot_origin_y - y * 2);
|
|
if (error) {
|
|
LOG(("xos_plot: 0x%x: %s", error->errnum, error->errmess));
|
|
return false;
|
|
}
|
|
error = xos_plot(os_PLOT_CIRCLE | os_PLOT_BY, radius * 2, 0);
|
|
if (error) {
|
|
LOG(("xos_plot: 0x%x: %s", error->errnum, error->errmess));
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if (style->stroke_type != PLOT_OP_TYPE_NONE) {
|
|
|
|
error = xcolourtrans_set_gcol(style->stroke_colour << 8, 0,
|
|
os_ACTION_OVERWRITE, 0, 0);
|
|
if (error) {
|
|
LOG(("xcolourtrans_set_gcol: 0x%x: %s",
|
|
error->errnum, error->errmess));
|
|
return false;
|
|
}
|
|
error = xos_plot(os_MOVE_TO,
|
|
ro_plot_origin_x + x * 2,
|
|
ro_plot_origin_y - y * 2);
|
|
if (error) {
|
|
LOG(("xos_plot: 0x%x: %s", error->errnum, error->errmess));
|
|
return false;
|
|
}
|
|
error = xos_plot(os_PLOT_CIRCLE_OUTLINE | os_PLOT_BY,
|
|
radius * 2, 0);
|
|
|
|
if (error) {
|
|
LOG(("xos_plot: 0x%x: %s", error->errnum, error->errmess));
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
bool ro_plot_arc(int x, int y, int radius, int angle1, int angle2, const plot_style_t *style)
|
|
{
|
|
os_error *error;
|
|
int sx, sy, ex, ey;
|
|
double t;
|
|
|
|
x = ro_plot_origin_x + x * 2;
|
|
y = ro_plot_origin_y - y * 2;
|
|
radius <<= 1;
|
|
|
|
error = xcolourtrans_set_gcol(style->fill_colour << 8, 0,
|
|
os_ACTION_OVERWRITE, 0, 0);
|
|
|
|
if (error) {
|
|
LOG(("xcolourtrans_set_gcol: 0x%x: %s",
|
|
error->errnum, error->errmess));
|
|
return false;
|
|
}
|
|
|
|
t = ((double)angle1 * M_PI) / 180.0;
|
|
sx = (x + (int)(radius * cos(t)));
|
|
sy = (y + (int)(radius * sin(t)));
|
|
|
|
t = ((double)angle2 * M_PI) / 180.0;
|
|
ex = (x + (int)(radius * cos(t)));
|
|
ey = (y + (int)(radius * sin(t)));
|
|
|
|
error = xos_plot(os_MOVE_TO, x, y); /* move to centre */
|
|
if (error) {
|
|
LOG(("xos_plot: 0x%x: %s", error->errnum, error->errmess));
|
|
return false;
|
|
}
|
|
|
|
error = xos_plot(os_MOVE_TO, sx, sy); /* move to start */
|
|
if (error) {
|
|
LOG(("xos_plot: 0x%x: %s", error->errnum, error->errmess));
|
|
return false;
|
|
}
|
|
|
|
error = xos_plot(os_PLOT_ARC | os_PLOT_TO, ex, ey); /* arc to end */
|
|
if (error) {
|
|
LOG(("xos_plot: 0x%x: %s", error->errnum, error->errmess));
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
|
|
|
|
bool ro_plot_bitmap(int x, int y, int width, int height,
|
|
struct bitmap *bitmap, colour bg,
|
|
bitmap_flags_t flags)
|
|
{
|
|
const uint8_t *buffer;
|
|
|
|
buffer = bitmap_get_buffer(bitmap);
|
|
if (!buffer) {
|
|
LOG(("bitmap_get_buffer failed"));
|
|
return false;
|
|
}
|
|
|
|
return image_redraw(bitmap->sprite_area,
|
|
ro_plot_origin_x + x * 2,
|
|
ro_plot_origin_y - y * 2,
|
|
width, height,
|
|
bitmap->width,
|
|
bitmap->height,
|
|
bg,
|
|
flags & BITMAPF_REPEAT_X, flags & BITMAPF_REPEAT_Y,
|
|
flags & BITMAPF_REPEAT_X || flags & BITMAPF_REPEAT_Y,
|
|
bitmap_get_opaque(bitmap) ? IMAGE_PLOT_TINCT_OPAQUE :
|
|
IMAGE_PLOT_TINCT_ALPHA);
|
|
}
|