ultimatepp/uppsrc/ide/IconDes/AlphaCtrl.cpp
2024-07-28 17:05:28 +02:00

121 lines
2.5 KiB
C++

#include "IconDes.h"
void AlphaCtrl::Layout()
{
MakeImage();
}
void AlphaCtrl::Paint(Draw& w)
{
Size sz = GetSize();
Size isz = IconDesImg::Alpha().GetSize();
w.DrawImage(0, isz.cy, img);
DrawFrame(w, 0, isz.cy, sz.cx, sz.cy - isz.cy, SColorText());
int h = sz.cy - isz.cy - 2;
if(!mask) {
w.DrawRect(DPI(15), isz.cy + 1, 1, h, SColorPaper());
w.DrawRect(DPI(16), isz.cy + 1, 1, h, SColorText());
w.DrawRect(DPI(17), isz.cy + 1, 1, h, SColorPaper());
w.DrawRect(sz.cx - DPI(17), isz.cy + 1, 1, h, SColorPaper());
w.DrawRect(sz.cx - DPI(16), isz.cy + 1, 1, h, SColorText());
w.DrawRect(sz.cx - DPI(15), isz.cy + 1, 1, h, SColorPaper());
}
int a = mask ? maskvalue : alpha;
int x = a == 0 ? DPI(8) - isz.cx / 2 :
a == 255 ? sz.cx - DPI(8) - isz.cx / 2
: DPI(16) + a * (sz.cx - DPI(32)) / 255 - isz.cx / 2;
w.DrawImage(x, 0, IconDesImg::Alpha());
}
void AlphaCtrl::DoPoint(Point p)
{
Size sz = GetSize();
if(mask)
maskvalue = p.x < sz.cx / 2 ? 0 : 255;
else
if(p.x < DPI(16) || sz.cx < DPI(32))
alpha = 0;
else
if(p.x > sz.cx - DPI(16))
alpha = 255;
else
alpha = 255 * (p.x - DPI(16)) / (sz.cx - DPI(32));
Refresh();
UpdateActionRefresh();
}
void AlphaCtrl::LeftDown(Point p, dword keyflags)
{
DoPoint(p);
SetCapture();
}
void AlphaCtrl::MouseMove(Point p, dword keyflags)
{
if(HasCapture())
DoPoint(p);
}
static void sPaintCol(ImageBuffer& b, int x, int y, int h, RGBA c)
{
RGBA *t = b[y] + x;
while(h-- > 0) {
*t = c;
t += b.GetWidth();
}
}
void AlphaCtrl::MakeImage()
{
Size sz = GetSize();
sz.cy -= IconDesImg::Alpha().GetHeight();
if(sz.cx <= DPI(32) || sz.cy < 0) {
img = Null;
return;
}
ImageBuffer b(GetSize());
Color c = mask ? Black() : color;
for(int i = 1; i < sz.cx; i++) {
int a = mask ? i < sz.cx / 2 ? 0 : 255
: i < DPI(16) ? 0 : i > sz.cx - DPI(16) ? 255 : min(255, 255 * i / (sz.cx - DPI(32)) - 1);
int h = sz.cy / 2;
sPaintCol(b, i, 0, h, Blend((i & DPI(8)) ? White : Black, c, a));
sPaintCol(b, i, h, h, Blend((i & DPI(8)) ? Black : White, c, a));
}
img = b;
Refresh();
}
void AlphaCtrl::SetColor(Color c)
{
color = c;
MakeImage();
}
void AlphaCtrl::Mask(bool m)
{
mask = m;
MakeImage();
Refresh();
}
void AlphaCtrl::Set(int a)
{
(mask ? maskvalue : alpha) = a;
UpdateRefresh();
}
int AlphaCtrl::Get() const
{
return mask ? maskvalue : alpha;
}
AlphaCtrl::AlphaCtrl()
{
BackPaint();
Transparent();
alpha = 255;
mask = false;
maskvalue = 255;
}