mirror of
https://github.com/ultimatepp/ultimatepp.git
synced 2026-05-16 14:16:09 -06:00
85 lines
1.6 KiB
C++
85 lines
1.6 KiB
C++
#include "Painter.h"
|
|
|
|
namespace Upp {
|
|
|
|
void BufferPainter::BeginMaskOp()
|
|
{
|
|
attr.mask = true;
|
|
Size sz = ib.GetSize();
|
|
mask.Add() = ib;
|
|
ib.Create(sz);
|
|
Clear(RGBAZero());
|
|
Begin();
|
|
}
|
|
|
|
static inline byte *sSpan(byte *t, int c, int& len)
|
|
{
|
|
while(len > 128) {
|
|
int n = min(len, 128);
|
|
*t++ = 0;
|
|
*t++ = c + n - 1;
|
|
len -= n;
|
|
}
|
|
if(len) {
|
|
*t++ = 0;
|
|
*t++ = c + len - 1;
|
|
len = 0;
|
|
}
|
|
return t;
|
|
}
|
|
|
|
void BufferPainter::FinishMask()
|
|
{
|
|
Buffer<byte> wb(mode == MODE_SUBPIXEL ? 6 * ib.GetWidth() : 2 * ib.GetWidth());
|
|
bool creating = false;
|
|
if(!attr.hasclip) {
|
|
clip.Add().Alloc(ib.GetHeight());
|
|
attr.hasclip = true;
|
|
attr.cliplevel = clip.GetCount();
|
|
creating = true;
|
|
}
|
|
Buffer<ClippingLine>& cl = clip.Top();
|
|
for(int y = 0; y < ib.GetHeight(); y++)
|
|
if(creating || !cl[y].IsEmpty()) {
|
|
int c0 = 0;
|
|
int c256 = 0;
|
|
const RGBA *s = ib[y];
|
|
const RGBA *e = ib[y] + ib.GetWidth();
|
|
byte *t = wb;
|
|
while(s < e) {
|
|
int val = s->a * (56 * s->r + 183 * s->g + 20 * s->b) >> 16;
|
|
if(val == 0) {
|
|
if(c256) t = sSpan(t, 128, c256);
|
|
c0++;
|
|
if(mode == MODE_SUBPIXEL)
|
|
c0 += 2;
|
|
}
|
|
else
|
|
if(val == 256) {
|
|
if(c0) t = sSpan(t, 0, c0);
|
|
c256++;
|
|
if(mode == MODE_SUBPIXEL)
|
|
c256 += 2;
|
|
}
|
|
else {
|
|
if(c256) t = sSpan(t, 128, c256);
|
|
if(c0) t = sSpan(t, 0, c0);
|
|
*t++ = val;
|
|
if(mode == MODE_SUBPIXEL) {
|
|
*t++ = val;
|
|
*t++ = val;
|
|
}
|
|
}
|
|
s++;
|
|
}
|
|
if(c256) t = sSpan(t, 128, c256);
|
|
if(c0) t = sSpan(t, 0, c0);
|
|
cl[y].Clear();
|
|
cl[y].Set(~wb, int(t - ~wb));
|
|
}
|
|
ib = mask.Top();
|
|
mask.Drop();
|
|
attr.mask = false;
|
|
}
|
|
|
|
}
|