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improve all widgets for bground effects

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Jinhao
2017-04-11 07:06:43 +08:00
parent 198bac505f
commit 6cbf721f9d
24 changed files with 479 additions and 284 deletions
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25
source/paint/detail/native_paint_interface.cpp
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@@ -1,7 +1,7 @@
/*
* Platform Implementation
* Nana C++ Library(http://www.nanapro.org)
* Copyright(C) 2003-2016 Jinhao(cnjinhao@hotmail.com)
* Copyright(C) 2003-2017 Jinhao(cnjinhao@hotmail.com)
*
* Distributed under the Boost Software License, Version 1.0.
* (See accompanying file LICENSE_1_0.txt or copy at
@@ -100,18 +100,23 @@ namespace detail
void blend(drawable_type dw, const rectangle& area, pixel_color_t color, double fade_rate)
{
if (fade_rate <= 0) return;
if (fade_rate > 1) fade_rate = 1;
if (fade_rate < 0)
fade_rate = 0;
else if (fade_rate >= 1)
return;
rectangle r;
if (false == ::nana::overlap(rectangle{ drawable_size(dw) }, area, r))
return;
unsigned red = static_cast<unsigned>((color.value & 0xFF0000) * fade_rate);
unsigned green = static_cast<unsigned>((color.value & 0xFF00) * fade_rate);
unsigned blue = static_cast<unsigned>((color.value & 0xFF) * fade_rate);
auto const color_fd_rate = (double(color.element.alpha_channel) / 255.0) * (1 - fade_rate);
fade_rate = (1 - color_fd_rate);
unsigned red = static_cast<unsigned>((color.value & 0xFF0000) * color_fd_rate);
unsigned green = static_cast<unsigned>((color.value & 0xFF00) * color_fd_rate);
unsigned blue = static_cast<unsigned>((color.value & 0xFF) * color_fd_rate);
double lrate = 1 - fade_rate;
pixel_buffer pixbuf(dw, r.y, r.height);
for (std::size_t row = 0; row < r.height; ++row)
@@ -120,9 +125,9 @@ namespace detail
const auto end = i + r.width;
for (; i < end; ++i)
{
unsigned px_r = ((static_cast<unsigned>((i->value & 0xFF0000) * lrate) + red) & 0xFF0000);
unsigned px_g = ((static_cast<unsigned>((i->value & 0xFF00) * lrate) + green) & 0xFF00);
unsigned px_b = ((static_cast<unsigned>((i->value & 0xFF) * lrate) + blue) & 0xFF);
unsigned px_r = ((static_cast<unsigned>((i->value & 0xFF0000) * fade_rate) + red) & 0xFF0000);
unsigned px_g = ((static_cast<unsigned>((i->value & 0xFF00) * fade_rate) + green) & 0xFF00);
unsigned px_b = ((static_cast<unsigned>((i->value & 0xFF) * fade_rate) + blue) & 0xFF);
i->value = (px_r | px_g | px_b);
}
}