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netsurf/riscos/htmlredraw.c

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/*
* This file is part of NetSurf, http://netsurf.sourceforge.net/
* Licensed under the GNU General Public License,
* http://www.opensource.org/licenses/gpl-license
* Copyright 2003 Phil Mellor <monkeyson@users.sourceforge.net>
* Copyright 2004 James Bursa <bursa@users.sourceforge.net>
*/
#include <assert.h>
#include <stdbool.h>
#include <string.h>
#include "oslib/colourtrans.h"
#include "oslib/font.h"
#include "netsurf/css/css.h"
#include "netsurf/content/content.h"
#include "netsurf/render/form.h"
#include "netsurf/render/html.h"
#include "netsurf/riscos/gui.h"
#include "netsurf/utils/log.h"
#include "netsurf/utils/utils.h"
static void html_redraw_box(struct content *content, struct box * box,
signed long x, signed long y,
unsigned long current_background_color,
signed long gadget_subtract_x, signed long gadget_subtract_y,
bool *select_on,
long clip_x0, long clip_y0, long clip_x1, long clip_y1,
float scale);
static void html_redraw_clip(long clip_x0, long clip_y0,
long clip_x1, long clip_y1);
void html_redraw_rectangle(int x0, int y0, int width, int height,
os_colour colour);
bool gui_redraw_debug = false;
static os_trfm trfm = { {
{ 65536, 0 },
{ 0, 65536 },
{ 0, 0 } } };
void html_redraw(struct content *c, long x, long y,
unsigned long width, unsigned long height,
long clip_x0, long clip_y0, long clip_x1, long clip_y1,
float scale)
{
bool select_on = false;
unsigned long background_colour = 0xffffff;
struct box *box;
assert(c->data.html.layout != NULL);
box = c->data.html.layout->children;
assert(box);
/* clear to background colour */
if (c->data.html.background_colour != TRANSPARENT) {
colourtrans_set_gcol(c->data.html.background_colour << 8,
colourtrans_SET_BG | colourtrans_USE_ECFS,
os_ACTION_OVERWRITE, 0);
os_clg();
background_colour = c->data.html.background_colour;
}
trfm.entries[0][0] = trfm.entries[1][1] = 65536 * scale;
html_redraw_box(c, box, x, y, background_colour, x, y,
&select_on, clip_x0, clip_y0, clip_x1, clip_y1, scale);
}
/* validation strings can't be const */
static char validation_checkbox_selected[] = "Sopton";
static char validation_checkbox_unselected[] = "Soptoff";
static char empty_text[] = "";
void html_redraw_box(struct content *content, struct box * box,
signed long x, signed long y,
unsigned long current_background_color,
signed long gadget_subtract_x, signed long gadget_subtract_y,
bool *select_on,
long clip_x0, long clip_y0, long clip_x1, long clip_y1,
float scale)
{
struct box *c;
int width, height, x0, y0, x1, y1, colour;
x += box->x * 2 * scale;
y -= box->y * 2 * scale;
width = (box->padding[LEFT] + box->width + box->padding[RIGHT]) * 2 * scale;
height = (box->padding[TOP] + box->height + box->padding[BOTTOM]) * 2 * scale;
x0 = x;
y1 = y - 1;
x1 = x0 + width - 1;
y0 = y1 - height + 1;
/* if visibility is hidden render children only */
if (box->style->visibility == CSS_VISIBILITY_HIDDEN) {
for (c = box->children; c; c = c->next)
html_redraw_box(content, c, x, y, current_background_color,
gadget_subtract_x, gadget_subtract_y, select_on,
x0, y0, x1, y1, scale);
return;
}
if (gui_redraw_debug) {
html_redraw_rectangle(x, y, width, height, os_COLOUR_MAGENTA);
html_redraw_rectangle(x + box->padding[LEFT] * 2, y - box->padding[TOP] * 2,
box->width * 2 * scale, box->height * 2 * scale,
os_COLOUR_CYAN);
html_redraw_rectangle(x - (box->border[LEFT] + box->margin[LEFT]) * 2,
y + (box->border[TOP] + box->margin[TOP]) * 2,
width + (box->border[LEFT] + box->margin[LEFT] +
box->border[RIGHT] + box->margin[RIGHT]) * 2,
height + (box->border[TOP] + box->margin[TOP] +
box->border[BOTTOM] + box->margin[BOTTOM]) * 2,
os_COLOUR_YELLOW);
}
/* return if the box is completely outside the clip rectangle, except
* for table rows which may contain cells spanning into other rows */
if (box->type != BOX_TABLE_ROW &&
(clip_y1 < y0 || y1 < clip_y0 ||
clip_x1 < x0 || x1 < clip_x0))
return;
if (box->type == BOX_BLOCK || box->type == BOX_INLINE_BLOCK ||
box->type == BOX_TABLE_CELL || box->object) {
/* find intersection of clip rectangle and box */
if (x0 < clip_x0) x0 = clip_x0;
if (y0 < clip_y0) y0 = clip_y0;
if (clip_x1 < x1) x1 = clip_x1;
if (clip_y1 < y1) y1 = clip_y1;
/* clip to it */
html_redraw_clip(x0, y0, x1, y1);
} else {
/* clip box unchanged */
x0 = clip_x0;
y0 = clip_y0;
x1 = clip_x1;
y1 = clip_y1;
}
/* background colour */
if (box->style != 0 && box->style->background_color != TRANSPARENT) {
colourtrans_set_gcol(box->style->background_color << 8,
colourtrans_USE_ECFS, os_ACTION_OVERWRITE, 0);
os_plot(os_MOVE_TO, x, y);
os_plot(os_PLOT_RECTANGLE | os_PLOT_BY, width, -height);
current_background_color = box->style->background_color;
}
if (box->object) {
content_redraw(box->object, x, y, (unsigned int)width,
(unsigned int)height, x0, y0, x1, y1, scale);
} else if (box->gadget &&
(box->gadget->type == GADGET_CHECKBOX ||
box->gadget->type == GADGET_RADIO)) {
wimp_icon icon;
icon.extent.x0 = -gadget_subtract_x + x;
icon.extent.y0 = -gadget_subtract_y + y - height;
icon.extent.x1 = -gadget_subtract_x + x + width;
icon.extent.y1 = -gadget_subtract_y + y;
switch (box->gadget->type) {
case GADGET_CHECKBOX:
icon.flags = wimp_ICON_TEXT | wimp_ICON_SPRITE |
wimp_ICON_VCENTRED | wimp_ICON_HCENTRED | wimp_ICON_INDIRECTED;
icon.data.indirected_text_and_sprite.text = empty_text;
if (box->gadget->data.checkbox.selected)
icon.data.indirected_text_and_sprite.validation = validation_checkbox_selected;
else
icon.data.indirected_text_and_sprite.validation = validation_checkbox_unselected;
icon.data.indirected_text_and_sprite.size = 1;
LOG(("writing GADGET CHECKBOX"));
wimp_plot_icon(&icon);
break;
case GADGET_RADIO:
icon.flags = wimp_ICON_SPRITE | wimp_ICON_VCENTRED | wimp_ICON_HCENTRED;
if (box->gadget->data.radio.selected)
strcpy(icon.data.sprite, "radioon");
else
strcpy(icon.data.sprite, "radiooff");
LOG(("writing GADGET RADIO"));
wimp_plot_icon(&icon);
break;
case GADGET_HIDDEN:
case GADGET_TEXTBOX:
case GADGET_TEXTAREA:
case GADGET_IMAGE:
case GADGET_PASSWORD:
case GADGET_SUBMIT:
case GADGET_RESET:
break;
}
} else if (box->text && box->font) {
if (content->data.html.text_selection.selected == 1) {
struct box_position *start;
struct box_position *end;
start = &(content->data.html.text_selection.start);
end = &(content->data.html.text_selection.end);
if (start->box == box) {
fprintf(stderr, "THE START OFFSET IS %d\n", start->pixel_offset * 2);
if (end->box == box) {
colourtrans_set_gcol(os_COLOUR_VERY_LIGHT_GREY, colourtrans_USE_ECFS, 0, 0);
os_plot(os_MOVE_TO,
x + start->pixel_offset * 2,
y - height);
os_plot(os_PLOT_RECTANGLE | os_PLOT_TO,
x + end->pixel_offset * 2 - 2,
y - 2);
} else {
colourtrans_set_gcol(os_COLOUR_VERY_LIGHT_GREY, colourtrans_USE_ECFS, 0, 0);
os_plot(os_MOVE_TO,
x + start->pixel_offset * 2,
y - height);
os_plot(os_PLOT_RECTANGLE | os_PLOT_TO,
x + width - 2,
y - 2);
*select_on = true;
}
} else if (*select_on) {
if (end->box != box) {
colourtrans_set_gcol(os_COLOUR_VERY_LIGHT_GREY, colourtrans_USE_ECFS, 0, 0);
os_plot(os_MOVE_TO, x,
y - height);
os_plot(os_PLOT_RECTANGLE | os_PLOT_TO,
x + width - 2,
y - 2);
} else {
colourtrans_set_gcol(os_COLOUR_VERY_LIGHT_GREY, colourtrans_USE_ECFS, 0, 0);
os_plot(os_MOVE_TO, x,
y - height);
os_plot(os_PLOT_RECTANGLE | os_PLOT_TO,
x + end->pixel_offset * 2 - 2,
y - 2);
*select_on = false;
}
}
}
colourtrans_set_font_colours(box->font->handle, current_background_color << 8,
box->style->color << 8, 14, 0, 0, 0);
colour = box->style->color;
colour = ((((colour >> 16) + (current_background_color >> 16)) / 2) << 16)
| (((((colour >> 8) & 0xff) +
((current_background_color >> 8) & 0xff)) / 2) << 8)
| ((((colour & 0xff) +
(current_background_color & 0xff)) / 2) << 0);
colourtrans_set_gcol((unsigned int)colour << 8, colourtrans_USE_ECFS,
os_ACTION_OVERWRITE, 0);
if (box->style->text_decoration & CSS_TEXT_DECORATION_UNDERLINE) {
os_plot(os_MOVE_TO, x, y - (int) (box->height * 1.8 * scale));
os_plot(os_PLOT_SOLID_EX_END | os_PLOT_BY, box->width * 2 * scale, 0);
}
if (box->parent->parent->style->text_decoration & CSS_TEXT_DECORATION_UNDERLINE && box->parent->parent->type == BOX_BLOCK) {
colourtrans_set_gcol((unsigned int)box->parent->parent->style->color << 8, colourtrans_USE_ECFS, os_ACTION_OVERWRITE, 0);
os_plot(os_MOVE_TO, x, y - (int) (box->height * 1.8 * scale));
os_plot(os_PLOT_SOLID_EX_END | os_PLOT_BY, box->width * 2 * scale, 0);
colourtrans_set_gcol((unsigned int)box->style->color << 8, colourtrans_USE_ECFS, os_ACTION_OVERWRITE, 0);
}
if (box->style->text_decoration & CSS_TEXT_DECORATION_OVERLINE) {
os_plot(os_MOVE_TO, x, y - (int) (box->height * 0.2 * scale));
os_plot(os_PLOT_SOLID_EX_END | os_PLOT_BY, box->width * 2 * scale, 0);
}
if (box->parent->parent->style->text_decoration & CSS_TEXT_DECORATION_OVERLINE && box->parent->parent->type == BOX_BLOCK) {
colourtrans_set_gcol((unsigned int)box->parent->parent->style->color << 8, colourtrans_USE_ECFS, os_ACTION_OVERWRITE, 0);
os_plot(os_MOVE_TO, x, y - (int) (box->height * 0.2 * scale));
os_plot(os_PLOT_SOLID_EX_END | os_PLOT_BY, box->width * 2 * scale, 0);
colourtrans_set_gcol((unsigned int)box->style->color << 8, colourtrans_USE_ECFS, os_ACTION_OVERWRITE, 0);
}
if (box->style->text_decoration & CSS_TEXT_DECORATION_LINE_THROUGH) {
os_plot(os_MOVE_TO, x, y - (int) (box->height * 1.0 * scale));
os_plot(os_PLOT_SOLID_EX_END | os_PLOT_BY, box->width * 2 * scale, 0);
}
if (box->parent->parent->style->text_decoration & CSS_TEXT_DECORATION_LINE_THROUGH && box->parent->parent->type == BOX_BLOCK) {
colourtrans_set_gcol((unsigned int)box->parent->parent->style->color << 8, colourtrans_USE_ECFS, os_ACTION_OVERWRITE, 0);
os_plot(os_MOVE_TO, x, y - (int) (box->height * 1.0 * scale));
os_plot(os_PLOT_SOLID_EX_END | os_PLOT_BY, box->width * 2 * scale, 0);
colourtrans_set_gcol((unsigned int)box->style->color << 8, colourtrans_USE_ECFS, os_ACTION_OVERWRITE, 0);
}
if (scale == 1)
font_paint(box->font->handle, box->text,
font_OS_UNITS | font_GIVEN_FONT |
font_KERN | font_GIVEN_LENGTH,
x, y - (int) (box->height * 1.5),
0, 0, (int) box->length);
else
font_paint(box->font->handle, box->text,
font_OS_UNITS | font_GIVEN_FONT |
font_KERN | font_GIVEN_LENGTH |
font_GIVEN_TRFM,
x, y - (int) (box->height * 1.5 * scale),
0, &trfm, (int) box->length);
} else {
for (c = box->children; c != 0; c = c->next)
if (c->type != BOX_FLOAT_LEFT && c->type != BOX_FLOAT_RIGHT)
html_redraw_box(content, c, x,
y, current_background_color,
gadget_subtract_x, gadget_subtract_y, select_on,
x0, y0, x1, y1, scale);
for (c = box->float_children; c != 0; c = c->next_float)
html_redraw_box(content, c, x,
y, current_background_color,
gadget_subtract_x, gadget_subtract_y, select_on,
x0, y0, x1, y1, scale);
}
if (box->type == BOX_BLOCK || box->type == BOX_INLINE_BLOCK ||
box->type == BOX_TABLE_CELL || box->object)
html_redraw_clip(clip_x0, clip_y0, clip_x1, clip_y1);
/* } else {
if (content->data.html.text_selection.selected == 1) {
struct box_position *start;
struct box_position *end;
start = &(content->data.html.text_selection.start);
end = &(content->data.html.text_selection.end);
if (start->box == box && end->box != box)
*select_on = true;
else if (*select_on && end->box == box)
*select_on = false;
}
}*/
}
void html_redraw_clip(long clip_x0, long clip_y0,
long clip_x1, long clip_y1)
{
os_set_graphics_window();
os_writec((char) (clip_x0 & 0xff)); os_writec((char) (clip_x0 >> 8));
os_writec((char) (clip_y0 & 0xff)); os_writec((char) (clip_y0 >> 8));
os_writec((char) (clip_x1 & 0xff)); os_writec((char) (clip_x1 >> 8));
os_writec((char) (clip_y1 & 0xff)); os_writec((char) (clip_y1 >> 8));
}
void html_redraw_rectangle(int x0, int y0, int width, int height,
os_colour colour)
{
colourtrans_set_gcol(colour, 0, os_ACTION_OVERWRITE, 0);
os_plot(os_MOVE_TO, x0, y0);
os_plot(os_PLOT_DOTTED | os_PLOT_BY, width, 0);
os_plot(os_PLOT_DOTTED | os_PLOT_BY, 0, -height);
os_plot(os_PLOT_DOTTED | os_PLOT_BY, -width, 0);
os_plot(os_PLOT_DOTTED | os_PLOT_BY, 0, height);
}
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