void gdip_recompute_line_gradient(GF_STENCIL _this)
{
GpPointF start, end;
u32 i, k;
REAL w, h;
GPSTEN();
if (!_sten->needs_rebuild) return;
_sten->needs_rebuild = GF_FALSE;
if (_sten->pLinear) GdipDeleteBrush(_sten->pLinear);
GdipCreateLineBrush(&_sten->start, &_sten->end, 0xFFFF0000, 0xFFFF00FF, WrapModeTile, &_sten->pLinear);
switch (_sten->spread) {
case GF_GRADIENT_MODE_PAD:
break;
case GF_GRADIENT_MODE_SPREAD:
GdipSetLineWrapMode(_sten->pLinear, WrapModeTileFlipXY);
GdipSetLinePresetBlend(_sten->pLinear, (ARGB *) _sten->cols, _sten->pos, _sten->num_pos);
return;
case GF_GRADIENT_MODE_REPEAT:
GdipSetLineWrapMode(_sten->pLinear, WrapModeTile);
GdipSetLinePresetBlend(_sten->pLinear, (ARGB *) _sten->cols, _sten->pos, _sten->num_pos);
return;
}
/*currently gdiplus doesn't support padded mode on gradients, so update the line gradient by
using a line 3 times longer*/
w = _sten->end.X - _sten->start.X;
h = _sten->end.Y - _sten->start.Y;
start.X = _sten->start.X - w;
start.Y = _sten->start.Y - h;
end.X = _sten->end.X + w;
end.Y = _sten->end.Y + h;
GdipCreateLineBrush(&start, &end, 0xFFFF0000, 0xFFFF00FF, WrapModeTile, &_sten->pLinear);
ARGB *cols = new ARGB[_sten->num_pos+2];
REAL *pos = new REAL[_sten->num_pos+2];
k=0;
for (i=0; i<_sten->num_pos; i++) {
cols[i+k] = _sten->cols[i];
pos[i+k] = (1 + _sten->pos[i])/3;
if (!i) {
pos[1] = pos[0];
cols[1] = cols[0];
k=1;
pos[0] = 0;
}
}
pos[_sten->num_pos+1] = 1.0;
cols[_sten->num_pos+1] = cols[_sten->num_pos];
/*since depending on gradient transform the padding is likely to be not big enough, use flipXY to assure that in most
cases the x3 dilatation is enough*/
GdipSetLineWrapMode(_sten->pLinear, WrapModeTileFlipXY);
GdipSetLinePresetBlend(_sten->pLinear, cols, pos, 2+_sten->num_pos);
delete [] cols;
delete [] pos;
}
static void test_lineblend(void)
{
GpLineGradient *brush;
GpStatus status;
GpPointF pt1, pt2;
INT count=10;
int i;
const REAL factors[5] = {0.0f, 0.1f, 0.5f, 0.9f, 1.0f};
const REAL positions[5] = {0.0f, 0.2f, 0.5f, 0.8f, 1.0f};
const REAL two_positions[2] = {0.0f, 1.0f};
const ARGB colors[5] = {0xff0000ff, 0xff00ff00, 0xff00ffff, 0xffff0000, 0xffffffff};
REAL res_factors[6] = {0.3f, 0.0f, 0.0f, 0.0f, 0.0f};
REAL res_positions[6] = {0.3f, 0.0f, 0.0f, 0.0f, 0.0f};
ARGB res_colors[6] = {0xdeadbeef, 0, 0, 0, 0};
pt1.X = pt1.Y = pt2.Y = pt2.X = 1.0;
status = GdipCreateLineBrush(&pt1, &pt2, 0, 0, WrapModeTile, &brush);
expect(OutOfMemory, status);
pt1.X = pt1.Y = 1.0;
pt2.X = pt2.Y = 100.0;
status = GdipCreateLineBrush(&pt1, &pt2, 0, 0, WrapModeTile, &brush);
expect(Ok, status);
status = GdipGetLineBlendCount(NULL, &count);
expect(InvalidParameter, status);
status = GdipGetLineBlendCount(brush, NULL);
expect(InvalidParameter, status);
status = GdipGetLineBlendCount(brush, &count);
expect(Ok, status);
expect(1, count);
status = GdipGetLineBlend(NULL, res_factors, res_positions, 1);
expect(InvalidParameter, status);
status = GdipGetLineBlend(brush, NULL, res_positions, 1);
expect(InvalidParameter, status);
status = GdipGetLineBlend(brush, res_factors, NULL, 1);
expect(InvalidParameter, status);
status = GdipGetLineBlend(brush, res_factors, res_positions, 0);
expect(InvalidParameter, status);
status = GdipGetLineBlend(brush, res_factors, res_positions, -1);
expect(InvalidParameter, status);
status = GdipGetLineBlend(brush, res_factors, res_positions, 1);
expect(Ok, status);
status = GdipGetLineBlend(brush, res_factors, res_positions, 2);
expect(Ok, status);
status = GdipSetLineBlend(NULL, factors, positions, 5);
expect(InvalidParameter, status);
status = GdipSetLineBlend(brush, NULL, positions, 5);
expect(InvalidParameter, status);
status = GdipSetLineBlend(brush, factors, NULL, 5);
expect(InvalidParameter, status);
status = GdipSetLineBlend(brush, factors, positions, 0);
expect(InvalidParameter, status);
status = GdipSetLineBlend(brush, factors, positions, -1);
expect(InvalidParameter, status);
/* leave off the 0.0 position */
status = GdipSetLineBlend(brush, &factors[1], &positions[1], 4);
expect(InvalidParameter, status);
/* leave off the 1.0 position */
status = GdipSetLineBlend(brush, factors, positions, 4);
expect(InvalidParameter, status);
status = GdipSetLineBlend(brush, factors, positions, 5);
expect(Ok, status);
status = GdipGetLineBlendCount(brush, &count);
expect(Ok, status);
expect(5, count);
status = GdipGetLineBlend(brush, res_factors, res_positions, 4);
expect(InsufficientBuffer, status);
status = GdipGetLineBlend(brush, res_factors, res_positions, 5);
expect(Ok, status);
for (i=0; i<5; i++)
{
expectf(factors[i], res_factors[i]);
expectf(positions[i], res_positions[i]);
}
status = GdipGetLineBlend(brush, res_factors, res_positions, 6);
expect(Ok, status);
status = GdipSetLineBlend(brush, factors, positions, 1);
expect(Ok, status);
status = GdipGetLineBlendCount(brush, &count);
expect(Ok, status);
expect(1, count);
status = GdipGetLineBlend(brush, res_factors, res_positions, 1);
expect(Ok, status);
status = GdipGetLinePresetBlendCount(NULL, &count);
expect(InvalidParameter, status);
status = GdipGetLinePresetBlendCount(brush, NULL);
expect(InvalidParameter, status);
status = GdipGetLinePresetBlendCount(brush, &count);
expect(Ok, status);
expect(0, count);
status = GdipGetLinePresetBlend(NULL, res_colors, res_positions, 1);
expect(InvalidParameter, status);
status = GdipGetLinePresetBlend(brush, NULL, res_positions, 1);
expect(InvalidParameter, status);
status = GdipGetLinePresetBlend(brush, res_colors, NULL, 1);
expect(InvalidParameter, status);
status = GdipGetLinePresetBlend(brush, res_colors, res_positions, 0);
expect(InvalidParameter, status);
status = GdipGetLinePresetBlend(brush, res_colors, res_positions, -1);
expect(InvalidParameter, status);
status = GdipGetLinePresetBlend(brush, res_colors, res_positions, 1);
expect(InvalidParameter, status);
status = GdipGetLinePresetBlend(brush, res_colors, res_positions, 2);
expect(GenericError, status);
status = GdipSetLinePresetBlend(NULL, colors, positions, 5);
expect(InvalidParameter, status);
status = GdipSetLinePresetBlend(brush, NULL, positions, 5);
expect(InvalidParameter, status);
status = GdipSetLinePresetBlend(brush, colors, NULL, 5);
expect(InvalidParameter, status);
status = GdipSetLinePresetBlend(brush, colors, positions, 0);
expect(InvalidParameter, status);
status = GdipSetLinePresetBlend(brush, colors, positions, -1);
expect(InvalidParameter, status);
status = GdipSetLinePresetBlend(brush, colors, positions, 1);
expect(InvalidParameter, status);
/* leave off the 0.0 position */
status = GdipSetLinePresetBlend(brush, &colors[1], &positions[1], 4);
expect(InvalidParameter, status);
/* leave off the 1.0 position */
status = GdipSetLinePresetBlend(brush, colors, positions, 4);
expect(InvalidParameter, status);
status = GdipSetLinePresetBlend(brush, colors, positions, 5);
expect(Ok, status);
status = GdipGetLinePresetBlendCount(brush, &count);
expect(Ok, status);
expect(5, count);
status = GdipGetLinePresetBlend(brush, res_colors, res_positions, 4);
expect(InsufficientBuffer, status);
status = GdipGetLinePresetBlend(brush, res_colors, res_positions, 5);
expect(Ok, status);
for (i=0; i<5; i++)
{
expect(colors[i], res_colors[i]);
expectf(positions[i], res_positions[i]);
}
status = GdipGetLinePresetBlend(brush, res_colors, res_positions, 6);
expect(Ok, status);
status = GdipSetLinePresetBlend(brush, colors, two_positions, 2);
expect(Ok, status);
status = GdipDeleteBrush((GpBrush*)brush);
expect(Ok, status);
}
