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neutrino: port rounded corner code from tuxbox CVS

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This allows to set all four corners separately. The default is
now to have all four corners rounded if radius is > 0 in paintBoxRel.
It also places hard coded integer numbers for CORNER_TOP and
CORNER_BOTTOM with the respective #defines.
This should make it much easier to port over code parts from tuxbox.org.
However, there are probably bugs and oversights in that I did not find
yet. Reports are welcome.

git-svn-id: file:///home/bas/coolstream_public_svn/THIRDPARTY/applications/neutrino-experimental@45 e54a6e83-5905-42d5-8d5c-058d10e6a962
This commit is contained in:
seife
2009-12-13 22:23:23 +00:00
parent af169c19ff
commit b0b471210f
31 changed files with 126 additions and 114 deletions
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22
src/driver/framebuffer.cpp
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@@ -500,6 +500,10 @@ void CFrameBuffer::paintBoxRel(const int x, const int y, const int dx, const int
if (!getActive())
return;
int corner_tl = (type & CORNER_TOP_LEFT) ? 1 : 0;
int corner_tr = (type & CORNER_TOP_RIGHT) ? 1 : 0;
int corner_bl = (type & CORNER_BOTTOM_LEFT) ? 1 : 0;
int corner_br = (type & CORNER_BOTTOM_RIGHT) ? 1 : 0;
#ifdef USE_NEVIS_GXA
/* this table contains the x coordinates for a quarter circle (the bottom right quarter) with fixed
radius of 540 px which is the half of the max HD graphics size of 1080 px. So with that table we
@@ -543,7 +547,7 @@ void CFrameBuffer::paintBoxRel(const int x, const int y, const int dx, const int
if ((type) && (radius))
{
#define MUL 32768 /* just an multiplicator for all math to reduce rounding errors */
int ofs, scf, scl;
int ofs, scf, scl, ofl, ofr;
/* limit the radius */
if (radius > dx)
@@ -559,26 +563,31 @@ void CFrameBuffer::paintBoxRel(const int x, const int y, const int dx, const int
while (line < dy)
{
ofs = 0;
ofl = ofr = 0;
if ((line < radius) && (type & 1))
if (line < radius && (type & CORNER_TOP)) /* one of the top corners */
{
/* uper round corners */
scl = scf * (radius - line) / MUL;
if ((scf * (radius - line) % MUL) >= (MUL / 2)) /* round up */
scl++;
ofs = radius - (q_circle[scl] * MUL / scf);
// ofl = corner_tl * ofs; // might depend on the arch if multiply is faster or not
ofl = corner_tl ? ofs : 0;
ofr = corner_tr ? ofs : 0;
}
else if ((line >= (dy - radius)) && (type & 2))
else if ((line >= dy - radius) && (type & CORNER_BOTTOM)) /* one of the bottom corners */
{
/* lower round corners */
scl = scf * (radius - (dy - (line + 1))) / MUL;
if ((scf * (radius - (dy - (line + 1))) % MUL) >= (MUL / 2)) /* round up */
scl++;
ofs = radius - (q_circle[scl] * MUL / scf);
ofl = corner_bl ? ofs : 0;
ofr = corner_br ? ofs : 0;
}
_write_gxa(gxa_base, cmd, GXA_POINT(x + dx - ofs, y + line)); /* endig point */
_write_gxa(gxa_base, cmd, GXA_POINT(x + ofs, y + line)); /* start point */
_write_gxa(gxa_base, cmd, GXA_POINT(x + dx - ofr, y + line)); /* endig point */
_write_gxa(gxa_base, cmd, GXA_POINT(x + ofl, y + line)); /* start point */
line++;
}
@@ -594,6 +603,7 @@ void CFrameBuffer::paintBoxRel(const int x, const int y, const int dx, const int
}
#else
#error TODO: please fix the rounded corner code for !USE_NEVIS_GXA case
int F,R=radius,sx,sy,dxx=dx,dyy=dy,rx,ry,wx,wy;
if (!getActive())