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[project @ 2005-03-19 15:33:06 by rjw]

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Improved colour light/dark algorith. Button borders are now dual-level 3d to improve appearance.

svn path=/import/netsurf/; revision=1545
This commit is contained in:
Richard Wilson 2005-03-19 15:33:06 +00:00
parent fb0903a089
commit f61f097e9a
1 changed files with 58 additions and 23 deletions
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81
render/html_redraw.c
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@ -400,6 +400,7 @@ bool html_redraw_borders(struct box *box, int x, int y,
};
int z[8];
colour c;
colour c_lit;
bool dotted;
unsigned int light;
@ -463,8 +464,7 @@ bool html_redraw_borders(struct box *box, int x, int y,
z[5] = (p[i * 4 + 7] + p[i * 4 + 5]) / 2;
z[6] = p[i * 4 + 6];
z[7] = p[i * 4 + 7];
if (!plot.polygon(z, 4,
light == 0 || light == 1 ?
if (!plot.polygon(z, 4, light <= 1 ?
html_redraw_darker(c) :
html_redraw_lighter(c)))
return false;
@ -472,25 +472,55 @@ bool html_redraw_borders(struct box *box, int x, int y,
z[1] = p[i * 4 + 3];
z[6] = p[i * 4 + 4];
z[7] = p[i * 4 + 5];
if (!plot.polygon(z, 4,
light == 0 || light == 1 ?
if (!plot.polygon(z, 4, light <= 1 ?
html_redraw_lighter(c) :
html_redraw_darker(c)))
return false;;
continue;
case CSS_BORDER_STYLE_INSET:
if (i == 0 || i == 3)
c = html_redraw_darker(c);
else
c = html_redraw_lighter(c);
break;
light = (light + 2) % 4;
case CSS_BORDER_STYLE_OUTSET:
if (i == 0 || i == 3)
z[0] = p[i * 4 + 0];
z[1] = p[i * 4 + 1];
z[2] = (p[i * 4 + 0] + p[i * 4 + 2]) / 2;
z[3] = (p[i * 4 + 1] + p[i * 4 + 3]) / 2;
z[4] = (p[i * 4 + 6] + p[i * 4 + 4]) / 2;
z[5] = (p[i * 4 + 7] + p[i * 4 + 5]) / 2;
z[6] = p[i * 4 + 6];
z[7] = p[i * 4 + 7];
c_lit = c;
switch (light) {
case 3:
c_lit = html_redraw_lighter(c_lit);
case 0:
c_lit = html_redraw_lighter(c_lit);
break;
case 1:
c_lit = html_redraw_darker(c_lit);
case 2:
c_lit = html_redraw_darker(c_lit);
}
if (!plot.polygon(z, 4, c_lit))
return false;
z[0] = p[i * 4 + 2];
z[1] = p[i * 4 + 3];
z[6] = p[i * 4 + 4];
z[7] = p[i * 4 + 5];
switch (light) {
case 0:
c = html_redraw_lighter(c);
else
case 3:
c = html_redraw_lighter(c);
break;
case 2:
c = html_redraw_darker(c);
break;
case 1:
c = html_redraw_darker(c);
}
if (!plot.polygon(z, 4, c))
return false;
continue;
default:
break;
@ -513,11 +543,14 @@ bool html_redraw_borders(struct box *box, int x, int y,
colour html_redraw_darker(colour c)
{
int b = c >> 16, g = (c >> 8) & 0xff, r = c & 0xff;
b = b * 3 / 4;
g = g * 3 / 4;
r = r * 3 / 4;
return (b << 16) | (g << 8) | r;
int modified, channel;
channel = (((c & 0xff) * 7) - 0x8) >> 3;
modified = channel > 0 ? channel : 0;
channel = (((c & 0xff00) * 7) - 0x800) >> 11;
modified |= channel > 0 ? channel << 8 : 0;
channel = (((c & 0xff0000) * 7) - 0x80000) >> 19;
modified |= channel > 0 ? channel << 16 : 0;
return modified;
}
@ -530,12 +563,14 @@ colour html_redraw_darker(colour c)
colour html_redraw_lighter(colour c)
{
int b = 0xff - (c >> 16), g = 0xff - ((c >> 8) & 0xff),
r = 0xff - (c & 0xff);
b = b * 3 / 4;
g = g * 3 / 4;
r = r * 3 / 4;
return ((0xff - b) << 16) | ((0xff - g) << 8) | (0xff - r);
int modified, channel;
channel = (((c & 0xff) * 9) + 0x8) >> 3;
modified = channel < 255 ? channel : 255;
channel = (((c & 0xff00) * 9) + 0x800) >> 11;
modified |= channel < 255 ? channel << 8 : 255 << 8;
channel = (((c & 0xff0000) * 9) + 0x80000) >> 19;
modified |= channel < 255 ? channel << 16 : 255 << 16;
return modified;
}