mirror of
https://github.com/netsurf-browser/netsurf
synced 2024-12-28 06:49:41 +03:00
929 lines
23 KiB
C
929 lines
23 KiB
C
/*
|
|
* Copyright 2017 Vincent Sanders <vince@netsurf-browser.org>
|
|
*
|
|
* 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
|
|
*
|
|
* Redrawing CONTENT_HTML borders implementation.
|
|
*/
|
|
|
|
#include <stdbool.h>
|
|
#include <stdlib.h>
|
|
|
|
#include "utils/log.h"
|
|
#include "netsurf/plotters.h"
|
|
#include "netsurf/css.h"
|
|
|
|
#include "html/box.h"
|
|
#include "html/html_internal.h"
|
|
|
|
|
|
static plot_style_t plot_style_bdr = {
|
|
.stroke_type = PLOT_OP_TYPE_DASH,
|
|
};
|
|
static plot_style_t plot_style_fillbdr = {
|
|
.fill_type = PLOT_OP_TYPE_SOLID,
|
|
};
|
|
static plot_style_t plot_style_fillbdr_dark = {
|
|
.fill_type = PLOT_OP_TYPE_SOLID,
|
|
};
|
|
static plot_style_t plot_style_fillbdr_light = {
|
|
.fill_type = PLOT_OP_TYPE_SOLID,
|
|
};
|
|
static plot_style_t plot_style_fillbdr_ddark = {
|
|
.fill_type = PLOT_OP_TYPE_SOLID,
|
|
};
|
|
static plot_style_t plot_style_fillbdr_dlight = {
|
|
.fill_type = PLOT_OP_TYPE_SOLID,
|
|
};
|
|
|
|
|
|
static inline nserror
|
|
plot_clipped_rectangle(const struct redraw_context *ctx,
|
|
const plot_style_t *style,
|
|
const struct rect *clip,
|
|
struct rect *rect)
|
|
{
|
|
nserror res;
|
|
|
|
rect->x0 = (clip->x0 > rect->x0) ? clip->x0 : rect->x0;
|
|
rect->y0 = (clip->y0 > rect->y0) ? clip->y0 : rect->y0;
|
|
rect->x1 = (clip->x1 < rect->x1) ? clip->x1 : rect->x1;
|
|
rect->y1 = (clip->y1 < rect->y1) ? clip->y1 : rect->y1;
|
|
if ((rect->x0 < rect->x1) && (rect->y0 < rect->y1)) {
|
|
/* valid clip rectangles only */
|
|
res = ctx->plot->rectangle(ctx, style, rect);
|
|
} else {
|
|
res = NSERROR_OK;
|
|
}
|
|
return res;
|
|
}
|
|
|
|
|
|
/**
|
|
* Draw one border.
|
|
*
|
|
* \param side index of border side (TOP, RIGHT, BOTTOM, LEFT)
|
|
* \param p array of precomputed border vertices
|
|
* \param c colour for border
|
|
* \param style border line style
|
|
* \param thickness border thickness
|
|
* \param rectangular whether border is rectangular
|
|
* \param clip cliping area for redrawing border.
|
|
* \param ctx current redraw context
|
|
* \return NSERROR_OK if successful otherwise appropriate error code
|
|
*/
|
|
static nserror
|
|
html_redraw_border_plot(const int side,
|
|
const int *p,
|
|
colour c,
|
|
enum css_border_style_e style,
|
|
int thickness,
|
|
bool rectangular,
|
|
const struct rect *clip,
|
|
const struct redraw_context *ctx)
|
|
{
|
|
int z[8]; /* Vertices of border part */
|
|
unsigned int light = side;
|
|
plot_style_t *plot_style_bdr_in;
|
|
plot_style_t *plot_style_bdr_out;
|
|
nserror res = NSERROR_OK;
|
|
struct rect rect;
|
|
|
|
if (c == NS_TRANSPARENT) {
|
|
return res;
|
|
}
|
|
|
|
plot_style_bdr.stroke_type = PLOT_OP_TYPE_DASH;
|
|
plot_style_bdr.stroke_colour = c;
|
|
plot_style_bdr.stroke_width = (thickness << PLOT_STYLE_RADIX);
|
|
plot_style_fillbdr.fill_colour = c;
|
|
plot_style_fillbdr_dark.fill_colour = darken_colour(c);
|
|
plot_style_fillbdr_light.fill_colour = lighten_colour(c);
|
|
plot_style_fillbdr_ddark.fill_colour = double_darken_colour(c);
|
|
plot_style_fillbdr_dlight.fill_colour = double_lighten_colour(c);
|
|
|
|
switch (style) {
|
|
case CSS_BORDER_STYLE_DOTTED:
|
|
plot_style_bdr.stroke_type = PLOT_OP_TYPE_DOT;
|
|
/* fall through */
|
|
case CSS_BORDER_STYLE_DASHED:
|
|
rect.x0 = (p[0] + p[2]) / 2;
|
|
rect.y0 = (p[1] + p[3]) / 2;
|
|
rect.x1 = (p[4] + p[6]) / 2;
|
|
rect.y1 = (p[5] + p[7]) / 2;
|
|
res = ctx->plot->line(ctx, &plot_style_bdr, &rect);
|
|
break;
|
|
|
|
case CSS_BORDER_STYLE_SOLID:
|
|
/* fall through to default */
|
|
default:
|
|
if (rectangular || thickness == 1) {
|
|
|
|
if (side == TOP || side == RIGHT) {
|
|
rect.x0 = p[2];
|
|
rect.y0 = p[3];
|
|
if ((side == TOP) &&
|
|
(p[4] - p[6] != 0)) {
|
|
rect.x1 = p[4];
|
|
} else {
|
|
rect.x1 = p[6];
|
|
}
|
|
rect.y1 = p[7];
|
|
} else {
|
|
rect.x0 = p[6];
|
|
rect.y0 = p[7];
|
|
rect.x1 = p[2];
|
|
if ((side == LEFT) &&
|
|
(p[1] - p[3] != 0)) {
|
|
rect.y1 = p[1];
|
|
} else {
|
|
rect.y1 = p[3];
|
|
}
|
|
}
|
|
res = plot_clipped_rectangle(ctx,
|
|
&plot_style_fillbdr,
|
|
clip,
|
|
&rect);
|
|
} else {
|
|
res = ctx->plot->polygon(ctx, &plot_style_fillbdr, p, 4);
|
|
}
|
|
break;
|
|
|
|
case CSS_BORDER_STYLE_DOUBLE:
|
|
z[0] = p[0];
|
|
z[1] = p[1];
|
|
z[2] = (p[0] * 2 + p[2]) / 3;
|
|
z[3] = (p[1] * 2 + p[3]) / 3;
|
|
z[4] = (p[6] * 2 + p[4]) / 3;
|
|
z[5] = (p[7] * 2 + p[5]) / 3;
|
|
z[6] = p[6];
|
|
z[7] = p[7];
|
|
res = ctx->plot->polygon(ctx, &plot_style_fillbdr, z, 4);
|
|
if (res == NSERROR_OK) {
|
|
z[0] = p[2];
|
|
z[1] = p[3];
|
|
z[2] = (p[2] * 2 + p[0]) / 3;
|
|
z[3] = (p[3] * 2 + p[1]) / 3;
|
|
z[4] = (p[4] * 2 + p[6]) / 3;
|
|
z[5] = (p[5] * 2 + p[7]) / 3;
|
|
z[6] = p[4];
|
|
z[7] = p[5];
|
|
res = ctx->plot->polygon(ctx, &plot_style_fillbdr, z, 4);
|
|
}
|
|
break;
|
|
|
|
case CSS_BORDER_STYLE_GROOVE:
|
|
light = 3 - light;
|
|
/* fall through */
|
|
case CSS_BORDER_STYLE_RIDGE:
|
|
/* choose correct colours for each part of the border line */
|
|
if (light <= 1) {
|
|
plot_style_bdr_in = &plot_style_fillbdr_dark;
|
|
plot_style_bdr_out = &plot_style_fillbdr_light;
|
|
} else {
|
|
plot_style_bdr_in = &plot_style_fillbdr_light;
|
|
plot_style_bdr_out = &plot_style_fillbdr_dark;
|
|
}
|
|
|
|
/* Render border */
|
|
if ((rectangular || thickness == 2) && thickness != 1) {
|
|
/* Border made up from two parts and can be
|
|
* plotted with rectangles
|
|
*/
|
|
|
|
/* First part */
|
|
if (side == TOP || side == RIGHT) {
|
|
rect.x0 = (p[0] + p[2]) / 2;
|
|
rect.y0 = (p[1] + p[3]) / 2;
|
|
rect.x1 = p[6];
|
|
rect.y1 = p[7];
|
|
} else {
|
|
rect.x0 = p[6];
|
|
rect.y0 = p[7];
|
|
rect.x1 = (p[0] + p[2]) / 2;
|
|
rect.y1 = (p[1] + p[3]) / 2;
|
|
}
|
|
res = plot_clipped_rectangle(ctx,
|
|
plot_style_bdr_in,
|
|
clip,
|
|
&rect);
|
|
if (res != NSERROR_OK) {
|
|
return res;
|
|
}
|
|
|
|
/* Second part */
|
|
if (side == TOP || side == RIGHT) {
|
|
rect.x0 = p[2];
|
|
rect.y0 = p[3];
|
|
rect.x1 = (p[6] + p[4]) / 2;
|
|
rect.y1 = (p[7] + p[5]) / 2;
|
|
} else {
|
|
rect.x0 = (p[6] + p[4]) / 2;
|
|
rect.y0 = (p[7] + p[5]) / 2;
|
|
rect.x1 = p[2];
|
|
rect.y1 = p[3];
|
|
}
|
|
res = plot_clipped_rectangle(ctx,
|
|
plot_style_bdr_out,
|
|
clip,
|
|
&rect);
|
|
} else if (thickness == 1) {
|
|
/* Border made up from one part which can be
|
|
* plotted as a rectangle
|
|
*/
|
|
|
|
if (side == TOP || side == RIGHT) {
|
|
rect.x0 = p[2];
|
|
rect.y0 = p[3];
|
|
rect.x1 = p[6];
|
|
rect.y1 = p[7];
|
|
rect.x1 = ((side == TOP) && (p[4] - p[6] != 0)) ?
|
|
rect.x1 + p[4] - p[6] : rect.x1;
|
|
|
|
res = plot_clipped_rectangle(ctx,
|
|
plot_style_bdr_in,
|
|
clip,
|
|
&rect);
|
|
} else {
|
|
rect.x0 = p[6];
|
|
rect.y0 = p[7];
|
|
rect.x1 = p[2];
|
|
rect.y1 = p[3];
|
|
rect.y1 = ((side == LEFT) && (p[1] - p[3] != 0)) ?
|
|
rect.y1 + p[1] - p[3] : rect.y1;
|
|
res = plot_clipped_rectangle(ctx,
|
|
plot_style_bdr_out,
|
|
clip,
|
|
&rect);
|
|
}
|
|
} else {
|
|
/* Border made up from two parts and can't be
|
|
* plotted with rectangles
|
|
*/
|
|
z[0] = p[0];
|
|
z[1] = p[1];
|
|
z[2] = (p[0] + p[2]) / 2;
|
|
z[3] = (p[1] + p[3]) / 2;
|
|
z[4] = (p[6] + p[4]) / 2;
|
|
z[5] = (p[7] + p[5]) / 2;
|
|
z[6] = p[6];
|
|
z[7] = p[7];
|
|
res = ctx->plot->polygon(ctx, plot_style_bdr_in, z, 4);
|
|
if (res == NSERROR_OK) {
|
|
z[0] = p[2];
|
|
z[1] = p[3];
|
|
z[6] = p[4];
|
|
z[7] = p[5];
|
|
res = ctx->plot->polygon(ctx,
|
|
plot_style_bdr_out,
|
|
z,
|
|
4);
|
|
}
|
|
}
|
|
break;
|
|
|
|
case CSS_BORDER_STYLE_INSET:
|
|
light = (light + 2) % 4;
|
|
/* fall through */
|
|
case CSS_BORDER_STYLE_OUTSET:
|
|
/* choose correct colours for each part of the border line */
|
|
switch (light) {
|
|
case 0:
|
|
plot_style_bdr_in = &plot_style_fillbdr_light;
|
|
plot_style_bdr_out = &plot_style_fillbdr_dlight;
|
|
break;
|
|
case 1:
|
|
plot_style_bdr_in = &plot_style_fillbdr_ddark;
|
|
plot_style_bdr_out = &plot_style_fillbdr_dark;
|
|
break;
|
|
case 2:
|
|
plot_style_bdr_in = &plot_style_fillbdr_dark;
|
|
plot_style_bdr_out = &plot_style_fillbdr_ddark;
|
|
break;
|
|
case 3:
|
|
plot_style_bdr_in = &plot_style_fillbdr_dlight;
|
|
plot_style_bdr_out = &plot_style_fillbdr_light;
|
|
break;
|
|
default:
|
|
plot_style_bdr_in = &plot_style_fillbdr;
|
|
plot_style_bdr_out = &plot_style_fillbdr;
|
|
break;
|
|
}
|
|
|
|
/* Render border */
|
|
if ((rectangular || thickness == 2) && thickness != 1) {
|
|
/* Border made up from two parts and can be
|
|
* plotted with rectangles
|
|
*/
|
|
|
|
/* First part */
|
|
if (side == TOP || side == RIGHT) {
|
|
rect.x0 = (p[0] + p[2]) / 2;
|
|
rect.y0 = (p[1] + p[3]) / 2;
|
|
rect.x1 = p[6];
|
|
rect.y1 = p[7];
|
|
} else {
|
|
rect.x0 = p[6];
|
|
rect.y0 = p[7];
|
|
rect.x1 = (p[0] + p[2]) / 2;
|
|
rect.y1 = (p[1] + p[3]) / 2;
|
|
}
|
|
res = plot_clipped_rectangle(ctx,
|
|
plot_style_bdr_in,
|
|
clip,
|
|
&rect);
|
|
if (res != NSERROR_OK) {
|
|
return res;
|
|
}
|
|
|
|
/* Second part */
|
|
if (side == TOP || side == RIGHT) {
|
|
rect.x0 = p[2];
|
|
rect.y0 = p[3];
|
|
rect.x1 = (p[6] + p[4]) / 2;
|
|
rect.y1 = (p[7] + p[5]) / 2;
|
|
} else {
|
|
rect.x0 = (p[6] + p[4]) / 2;
|
|
rect.y0 = (p[7] + p[5]) / 2;
|
|
rect.x1 = p[2];
|
|
rect.y1 = p[3];
|
|
}
|
|
res = plot_clipped_rectangle(ctx,
|
|
plot_style_bdr_out,
|
|
clip,
|
|
&rect);
|
|
} else if (thickness == 1) {
|
|
/* Border made up from one part which can be
|
|
* plotted as a rectangle
|
|
*/
|
|
|
|
if (side == TOP || side == RIGHT) {
|
|
rect.x0 = p[2];
|
|
rect.y0 = p[3];
|
|
rect.x1 = p[6];
|
|
rect.y1 = p[7];
|
|
rect.x1 = ((side == TOP) && (p[4] - p[6] != 0)) ?
|
|
rect.x1 + p[4] - p[6] : rect.x1;
|
|
res = plot_clipped_rectangle(ctx,
|
|
plot_style_bdr_in,
|
|
clip,
|
|
&rect);
|
|
} else {
|
|
rect.x0 = p[6];
|
|
rect.y0 = p[7];
|
|
rect.x1 = p[2];
|
|
rect.y1 = p[3];
|
|
rect.y1 = ((side == LEFT) && (p[1] - p[3] != 0)) ?
|
|
rect.y1 + p[1] - p[3] : rect.y1;
|
|
res = plot_clipped_rectangle(ctx,
|
|
plot_style_bdr_out,
|
|
clip,
|
|
&rect);
|
|
}
|
|
} else {
|
|
/* Border made up from two parts and can't be
|
|
* plotted with rectangles
|
|
*/
|
|
|
|
z[0] = p[0];
|
|
z[1] = p[1];
|
|
z[2] = (p[0] + p[2]) / 2;
|
|
z[3] = (p[1] + p[3]) / 2;
|
|
z[4] = (p[6] + p[4]) / 2;
|
|
z[5] = (p[7] + p[5]) / 2;
|
|
z[6] = p[6];
|
|
z[7] = p[7];
|
|
res = ctx->plot->polygon(ctx, plot_style_bdr_in, z, 4);
|
|
if (res != NSERROR_OK) {
|
|
return res;
|
|
}
|
|
z[0] = p[2];
|
|
z[1] = p[3];
|
|
z[6] = p[4];
|
|
z[7] = p[5];
|
|
res = ctx->plot->polygon(ctx, plot_style_bdr_out, z, 4);
|
|
}
|
|
break;
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
|
|
/**
|
|
* Draw borders for a box.
|
|
*
|
|
* \param box box to draw
|
|
* \param x_parent coordinate of left padding edge of parent of box
|
|
* \param y_parent coordinate of top padding edge of parent of box
|
|
* \param p_width width of padding box
|
|
* \param p_height height of padding box
|
|
* \param clip cliping area for redrawing border.
|
|
* \param scale scale for redraw
|
|
* \param ctx current redraw context
|
|
* \return true if successful, false otherwise
|
|
*/
|
|
bool
|
|
html_redraw_borders(struct box *box,
|
|
int x_parent,
|
|
int y_parent,
|
|
int p_width,
|
|
int p_height,
|
|
const struct rect *clip,
|
|
float scale,
|
|
const struct redraw_context *ctx)
|
|
{
|
|
unsigned int sides[] = { LEFT, RIGHT, TOP, BOTTOM };
|
|
int top = box->border[TOP].width;
|
|
int right = box->border[RIGHT].width;
|
|
int bottom = box->border[BOTTOM].width;
|
|
int left = box->border[LEFT].width;
|
|
int x, y;
|
|
unsigned int i, side;
|
|
int p[8]; /* Box border vertices */
|
|
int z[8]; /* Border vertices */
|
|
bool square_end_1 = false;
|
|
bool square_end_2 = false;
|
|
nserror res;
|
|
|
|
x = x_parent + box->x;
|
|
y = y_parent + box->y;
|
|
|
|
if (scale != 1.0) {
|
|
top *= scale;
|
|
right *= scale;
|
|
bottom *= scale;
|
|
left *= scale;
|
|
x *= scale;
|
|
y *= scale;
|
|
}
|
|
|
|
assert(box->style);
|
|
|
|
/* Calculate border vertices
|
|
*
|
|
* A----------------------+
|
|
* | \ / |
|
|
* | B--------------+ |
|
|
* | | | |
|
|
* | +--------------C |
|
|
* | / \ |
|
|
* +----------------------D
|
|
*/
|
|
p[0] = x - left; p[1] = y - top; /* A */
|
|
p[2] = x; p[3] = y; /* B */
|
|
p[4] = x + p_width; p[5] = y + p_height; /* C */
|
|
p[6] = x + p_width + right; p[7] = y + p_height + bottom; /* D */
|
|
|
|
for (i = 0; i != 4; i++) {
|
|
colour col = 0;
|
|
side = sides[i]; /* plot order */
|
|
|
|
if (box->border[side].width == 0 ||
|
|
nscss_color_is_transparent(box->border[side].c)) {
|
|
continue;
|
|
}
|
|
|
|
switch (side) {
|
|
case LEFT:
|
|
square_end_1 = (top == 0);
|
|
square_end_2 = (bottom == 0);
|
|
|
|
z[0] = p[0]; z[1] = p[7];
|
|
z[2] = p[2]; z[3] = p[5];
|
|
z[4] = p[2]; z[5] = p[3];
|
|
z[6] = p[0]; z[7] = p[1];
|
|
|
|
if (nscss_color_is_transparent(box->border[TOP].c) == false &&
|
|
box->border[TOP].style != CSS_BORDER_STYLE_DOUBLE) {
|
|
/* make border overhang top corner fully,
|
|
* if top border is opaque
|
|
*/
|
|
z[5] -= top;
|
|
square_end_1 = true;
|
|
}
|
|
if (nscss_color_is_transparent(box->border[BOTTOM].c) == false &&
|
|
box->border[BOTTOM].style != CSS_BORDER_STYLE_DOUBLE) {
|
|
/* make border overhang bottom corner fully,
|
|
* if bottom border is opaque
|
|
*/
|
|
z[3] += bottom;
|
|
square_end_2 = true;
|
|
}
|
|
|
|
col = nscss_color_to_ns(box->border[side].c);
|
|
|
|
res = html_redraw_border_plot(side,
|
|
z,
|
|
col,
|
|
box->border[side].style,
|
|
box->border[side].width * scale,
|
|
square_end_1 && square_end_2,
|
|
clip,
|
|
ctx);
|
|
if (res != NSERROR_OK) {
|
|
return false;
|
|
}
|
|
break;
|
|
|
|
case RIGHT:
|
|
square_end_1 = (top == 0);
|
|
square_end_2 = (bottom == 0);
|
|
|
|
z[0] = p[6]; z[1] = p[1];
|
|
z[2] = p[4]; z[3] = p[3];
|
|
z[4] = p[4]; z[5] = p[5];
|
|
z[6] = p[6]; z[7] = p[7];
|
|
|
|
if (nscss_color_is_transparent(box->border[TOP].c) == false &&
|
|
box->border[TOP].style != CSS_BORDER_STYLE_DOUBLE) {
|
|
/* make border overhang top corner fully,
|
|
* if top border is opaque
|
|
*/
|
|
z[3] -= top;
|
|
square_end_1 = true;
|
|
}
|
|
if (nscss_color_is_transparent(box->border[BOTTOM].c) == false &&
|
|
box->border[BOTTOM].style != CSS_BORDER_STYLE_DOUBLE) {
|
|
/* make border overhang bottom corner fully,
|
|
* if bottom border is opaque
|
|
*/
|
|
z[5] += bottom;
|
|
square_end_2 = true;
|
|
}
|
|
|
|
col = nscss_color_to_ns(box->border[side].c);
|
|
|
|
res = html_redraw_border_plot(side,
|
|
z,
|
|
col,
|
|
box->border[side].style,
|
|
box->border[side].width * scale,
|
|
square_end_1 && square_end_2,
|
|
clip,
|
|
ctx);
|
|
if (res != NSERROR_OK) {
|
|
return false;
|
|
}
|
|
break;
|
|
|
|
case TOP:
|
|
if (clip->y0 > p[3]) {
|
|
/* clip rectangle is below border; nothing to
|
|
* plot
|
|
*/
|
|
continue;
|
|
}
|
|
|
|
square_end_1 = (left == 0);
|
|
square_end_2 = (right == 0);
|
|
|
|
z[0] = p[2]; z[1] = p[3];
|
|
z[2] = p[0]; z[3] = p[1];
|
|
z[4] = p[6]; z[5] = p[1];
|
|
z[6] = p[4]; z[7] = p[3];
|
|
|
|
if (box->border[TOP].style == CSS_BORDER_STYLE_SOLID &&
|
|
box->border[TOP].c == box->border[LEFT].c) {
|
|
/* don't bother overlapping left corner if
|
|
* it's the same colour anyway
|
|
*/
|
|
z[2] += left;
|
|
square_end_1 = true;
|
|
}
|
|
if (box->border[TOP].style == CSS_BORDER_STYLE_SOLID &&
|
|
box->border[TOP].c == box->border[RIGHT].c) {
|
|
/* don't bother overlapping right corner if
|
|
* it's the same colour anyway
|
|
*/
|
|
z[4] -= right;
|
|
square_end_2 = true;
|
|
}
|
|
|
|
col = nscss_color_to_ns(box->border[side].c);
|
|
|
|
res = html_redraw_border_plot(side,
|
|
z,
|
|
col,
|
|
box->border[side].style,
|
|
box->border[side].width * scale,
|
|
square_end_1 && square_end_2,
|
|
clip,
|
|
ctx);
|
|
if (res != NSERROR_OK) {
|
|
return false;
|
|
}
|
|
break;
|
|
|
|
case BOTTOM:
|
|
if (clip->y1 < p[5]) {
|
|
/* clip rectangle is above border; nothing to
|
|
* plot
|
|
*/
|
|
continue;
|
|
}
|
|
|
|
square_end_1 = (left == 0);
|
|
square_end_2 = (right == 0);
|
|
|
|
z[0] = p[4]; z[1] = p[5];
|
|
z[2] = p[6]; z[3] = p[7];
|
|
z[4] = p[0]; z[5] = p[7];
|
|
z[6] = p[2]; z[7] = p[5];
|
|
|
|
if (box->border[BOTTOM].style == CSS_BORDER_STYLE_SOLID &&
|
|
box->border[BOTTOM].c == box->border[LEFT].c) {
|
|
/* don't bother overlapping left corner if
|
|
* it's the same colour anyway
|
|
*/
|
|
z[4] += left;
|
|
square_end_1 = true;
|
|
}
|
|
if (box->border[BOTTOM].style == CSS_BORDER_STYLE_SOLID &&
|
|
box->border[BOTTOM].c == box->border[RIGHT].c) {
|
|
/* don't bother overlapping right corner if
|
|
* it's the same colour anyway
|
|
*/
|
|
z[2] -= right;
|
|
square_end_2 = true;
|
|
}
|
|
|
|
col = nscss_color_to_ns(box->border[side].c);
|
|
|
|
res = html_redraw_border_plot(side,
|
|
z,
|
|
col,
|
|
box->border[side].style,
|
|
box->border[side].width * scale,
|
|
square_end_1 && square_end_2,
|
|
clip,
|
|
ctx);
|
|
if (res != NSERROR_OK) {
|
|
return false;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
assert(side == TOP || side == BOTTOM ||
|
|
side == LEFT || side == RIGHT);
|
|
break;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
|
|
/**
|
|
* Draw an inline's borders.
|
|
*
|
|
* \param box BOX_INLINE which created the border
|
|
* \param b coordinates of border edge rectangle
|
|
* \param clip cliping area for redrawing border.
|
|
* \param scale scale for redraw
|
|
* \param first true if this is the first rectangle associated with the inline
|
|
* \param last true if this is the last rectangle associated with the inline
|
|
* \param ctx current redraw context
|
|
* \return true if successful, false otherwise
|
|
*/
|
|
bool
|
|
html_redraw_inline_borders(struct box *box,
|
|
struct rect b,
|
|
const struct rect *clip,
|
|
float scale,
|
|
bool first,
|
|
bool last,
|
|
const struct redraw_context *ctx)
|
|
{
|
|
int top = box->border[TOP].width;
|
|
int right = box->border[RIGHT].width;
|
|
int bottom = box->border[BOTTOM].width;
|
|
int left = box->border[LEFT].width;
|
|
colour col;
|
|
int p[8]; /* Box border vertices */
|
|
int z[8]; /* Border vertices */
|
|
bool square_end_1;
|
|
bool square_end_2;
|
|
nserror res;
|
|
|
|
if (scale != 1.0) {
|
|
top *= scale;
|
|
right *= scale;
|
|
bottom *= scale;
|
|
left *= scale;
|
|
}
|
|
|
|
/* Calculate border vertices
|
|
*
|
|
* A----------------------+
|
|
* | \ / |
|
|
* | B--------------+ |
|
|
* | | | |
|
|
* | +--------------C |
|
|
* | / \ |
|
|
* +----------------------D
|
|
*/
|
|
p[0] = b.x0; p[1] = b.y0; /* A */
|
|
p[2] = first ? b.x0 + left : b.x0; p[3] = b.y0 + top; /* B */
|
|
p[4] = last ? b.x1 - right : b.x1; p[5] = b.y1 - bottom; /* C */
|
|
p[6] = b.x1; p[7] = b.y1; /* D */
|
|
|
|
assert(box->style);
|
|
|
|
/* Left */
|
|
square_end_1 = (top == 0);
|
|
square_end_2 = (bottom == 0);
|
|
if (left != 0 &&
|
|
first &&
|
|
nscss_color_is_transparent(box->border[LEFT].c) == false) {
|
|
col = nscss_color_to_ns(box->border[LEFT].c);
|
|
|
|
z[0] = p[0]; z[1] = p[7];
|
|
z[2] = p[2]; z[3] = p[5];
|
|
z[4] = p[2]; z[5] = p[3];
|
|
z[6] = p[0]; z[7] = p[1];
|
|
|
|
if (nscss_color_is_transparent(box->border[TOP].c) == false &&
|
|
box->border[TOP].style != CSS_BORDER_STYLE_DOUBLE) {
|
|
/* make border overhang top corner fully,
|
|
* if top border is opaque
|
|
*/
|
|
z[5] -= top;
|
|
square_end_1 = true;
|
|
}
|
|
|
|
if (nscss_color_is_transparent(box->border[BOTTOM].c) == false &&
|
|
box->border[BOTTOM].style != CSS_BORDER_STYLE_DOUBLE) {
|
|
/* make border overhang bottom corner fully,
|
|
* if bottom border is opaque
|
|
*/
|
|
z[3] += bottom;
|
|
square_end_2 = true;
|
|
}
|
|
|
|
res = html_redraw_border_plot(LEFT,
|
|
z,
|
|
col,
|
|
box->border[LEFT].style,
|
|
left,
|
|
square_end_1 && square_end_2,
|
|
clip,
|
|
ctx);
|
|
if (res != NSERROR_OK) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/* Right */
|
|
square_end_1 = (top == 0);
|
|
square_end_2 = (bottom == 0);
|
|
if (right != 0 &&
|
|
last &&
|
|
nscss_color_is_transparent(box->border[RIGHT].c) == false) {
|
|
col = nscss_color_to_ns(box->border[RIGHT].c);
|
|
|
|
z[0] = p[6]; z[1] = p[1];
|
|
z[2] = p[4]; z[3] = p[3];
|
|
z[4] = p[4]; z[5] = p[5];
|
|
z[6] = p[6]; z[7] = p[7];
|
|
|
|
if (nscss_color_is_transparent(box->border[TOP].c) == false &&
|
|
box->border[TOP].style != CSS_BORDER_STYLE_DOUBLE) {
|
|
/* make border overhang top corner fully,
|
|
* if top border is opaque
|
|
*/
|
|
z[3] -= top;
|
|
square_end_1 = true;
|
|
}
|
|
|
|
if (nscss_color_is_transparent(box->border[BOTTOM].c) == false &&
|
|
box->border[BOTTOM].style != CSS_BORDER_STYLE_DOUBLE) {
|
|
/* make border overhang bottom corner fully,
|
|
* if bottom border is opaque
|
|
*/
|
|
z[5] += bottom;
|
|
square_end_2 = true;
|
|
}
|
|
|
|
res = html_redraw_border_plot(RIGHT,
|
|
z,
|
|
col,
|
|
box->border[RIGHT].style,
|
|
right,
|
|
square_end_1 && square_end_2,
|
|
clip,
|
|
ctx);
|
|
if (res != NSERROR_OK) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/* Top */
|
|
square_end_1 = (left == 0);
|
|
square_end_2 = (right == 0);
|
|
if (top != 0 &&
|
|
nscss_color_is_transparent(box->border[TOP].c) == false) {
|
|
col = nscss_color_to_ns(box->border[TOP].c);
|
|
|
|
z[0] = p[2]; z[1] = p[3];
|
|
z[2] = p[0]; z[3] = p[1];
|
|
z[4] = p[6]; z[5] = p[1];
|
|
z[6] = p[4]; z[7] = p[3];
|
|
|
|
if (first &&
|
|
box->border[TOP].style == CSS_BORDER_STYLE_SOLID &&
|
|
box->border[TOP].c == box->border[LEFT].c) {
|
|
/* don't bother overlapping left corner if
|
|
* it's the same colour anyway
|
|
*/
|
|
z[2] += left;
|
|
square_end_1 = true;
|
|
}
|
|
|
|
if (last &&
|
|
box->border[TOP].style == CSS_BORDER_STYLE_SOLID &&
|
|
box->border[TOP].c == box->border[RIGHT].c) {
|
|
/* don't bother overlapping right corner if
|
|
* it's the same colour anyway
|
|
*/
|
|
z[4] -= right;
|
|
square_end_2 = true;
|
|
}
|
|
|
|
res = html_redraw_border_plot(TOP,
|
|
z,
|
|
col,
|
|
box->border[TOP].style,
|
|
top,
|
|
square_end_1 && square_end_2,
|
|
clip,
|
|
ctx);
|
|
if (res != NSERROR_OK) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/* Bottom */
|
|
square_end_1 = (left == 0);
|
|
square_end_2 = (right == 0);
|
|
if (bottom != 0 &&
|
|
nscss_color_is_transparent(box->border[BOTTOM].c) == false) {
|
|
col = nscss_color_to_ns(box->border[BOTTOM].c);
|
|
|
|
z[0] = p[4]; z[1] = p[5];
|
|
z[2] = p[6]; z[3] = p[7];
|
|
z[4] = p[0]; z[5] = p[7];
|
|
z[6] = p[2]; z[7] = p[5];
|
|
|
|
if (first &&
|
|
box->border[BOTTOM].style == CSS_BORDER_STYLE_SOLID &&
|
|
box->border[BOTTOM].c == box->border[LEFT].c) {
|
|
/* don't bother overlapping left corner if
|
|
* it's the same colour anyway
|
|
*/
|
|
z[4] += left;
|
|
square_end_1 = true;
|
|
}
|
|
|
|
if (last &&
|
|
box->border[BOTTOM].style == CSS_BORDER_STYLE_SOLID &&
|
|
box->border[BOTTOM].c == box->border[RIGHT].c) {
|
|
/* don't bother overlapping right corner if
|
|
* it's the same colour anyway
|
|
*/
|
|
z[2] -= right;
|
|
square_end_2 = true;
|
|
}
|
|
|
|
res = html_redraw_border_plot(BOTTOM,
|
|
z,
|
|
col,
|
|
box->border[BOTTOM].style,
|
|
bottom,
|
|
square_end_1 && square_end_2,
|
|
clip,
|
|
ctx);
|
|
if (res != NSERROR_OK) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|