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split border drawing out of html redraw

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This commit is contained in:
Vincent Sanders 2017-02-06 18:17:39 +00:00
parent 30df27c3ba
commit 18abdadac8
4 changed files with 939 additions and 847 deletions
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3
render/Makefile
View File

@ -3,7 +3,8 @@
S_RENDER := box.c box_construct.c box_normalise.c box_textarea.c \
font.c form.c imagemap.c layout.c search.c table.c textplain.c \
html.c html_css.c html_css_fetcher.c html_script.c \
html_interaction.c html_redraw.c html_forms.c html_object.c
html_interaction.c html_redraw.c html_redraw_border.c \
html_forms.c html_object.c
S_RENDER := $(addprefix render/,$(S_RENDER))

9
render/html_internal.h
View File

@ -258,6 +258,15 @@ bool html_begin_conversion(html_content *htmlc);
bool html_redraw(struct content *c, struct content_redraw_data *data,
const struct rect *clip, const struct redraw_context *ctx);
/* in render/html_redraw_border.c */
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);
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);
/* in render/html_interaction.c */
void html_mouse_track(struct content *c, struct browser_window *bw,
browser_mouse_state mouse, int x, int y);

846
render/html_redraw.c
View File

@ -344,852 +344,6 @@ text_redraw(const char *utf8_text,
return true;
}
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 true if successful, false otherwise
*/
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_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) {
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;
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
*/
static 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
*/
static 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;
}
/**
* Plot a checkbox.

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/*
* 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 "render/box.h"
#include "render/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_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;
}