129 lines
3.3 KiB
C++
129 lines
3.3 KiB
C++
/*
|
|
Copyright (c) 2013 yvt
|
|
|
|
This file is part of OpenSpades.
|
|
|
|
OpenSpades is free software: you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation, either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
OpenSpades is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with OpenSpades. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
*/
|
|
|
|
#include "SWImage.h"
|
|
#include <Core/FileManager.h>
|
|
#include <Core/IStream.h>
|
|
|
|
namespace spades {
|
|
namespace draw {
|
|
namespace {
|
|
inline uint32_t ProcessPixel(uint32_t col) {
|
|
unsigned int alpha = static_cast<unsigned int>(col >> 24);
|
|
alpha += (alpha >> 7); // [0,255] to [0,256]
|
|
|
|
unsigned int r = static_cast<unsigned int>((col >> 0) & 0xff);
|
|
unsigned int g = static_cast<unsigned int>((col >> 8) & 0xff);
|
|
unsigned int b = static_cast<unsigned int>((col >> 16) & 0xff);
|
|
r = (r * alpha) >> 8;
|
|
g = (g * alpha) >> 8;
|
|
b = (b * alpha) >> 8;
|
|
|
|
col &= 0xff000000;
|
|
col |= b | (g << 8) | (r << 16); // swap RGB/BGR
|
|
return col;
|
|
}
|
|
} // namespace
|
|
|
|
SWImage::SWImage(Bitmap &m)
|
|
: ew(m.GetWidth()),
|
|
eh(m.GetHeight()),
|
|
isWhite(false),
|
|
w(static_cast<float>(m.GetWidth())),
|
|
h(static_cast<float>(m.GetHeight())),
|
|
iw(1.f / w),
|
|
ih(1.f / h) {
|
|
bmp.resize(ew * eh);
|
|
|
|
// premultiplied alpha
|
|
{
|
|
uint32_t *inpix = m.GetPixels();
|
|
uint32_t *outpix = bmp.data();
|
|
bool foundNonWhite = false;
|
|
for (std::size_t i = ew * eh; i; i--) {
|
|
uint32_t col = *(inpix++);
|
|
col = ProcessPixel(col);
|
|
*(outpix++) = col;
|
|
|
|
if (col != 0xffffffff)
|
|
foundNonWhite = true;
|
|
}
|
|
isWhite = !foundNonWhite;
|
|
}
|
|
}
|
|
|
|
SWImage::SWImage(int w, int h)
|
|
: ew(w),
|
|
eh(h),
|
|
isWhite(false),
|
|
w(static_cast<float>(ew)),
|
|
h(static_cast<float>(eh)),
|
|
iw(1.f / w),
|
|
ih(1.f / h) {
|
|
bmp.reserve(ew * eh);
|
|
}
|
|
|
|
SWImage::~SWImage() {}
|
|
|
|
void SWImage::Update(Bitmap &inBmp, int x, int y) {
|
|
SPADES_MARK_FUNCTION();
|
|
if (x < 0 || y < 0 || x + inBmp.GetWidth() > ew || y + inBmp.GetHeight() > eh) {
|
|
SPRaise("Out of range.");
|
|
}
|
|
|
|
{
|
|
int bw = inBmp.GetWidth();
|
|
int bh = inBmp.GetHeight();
|
|
for (int yy = 0; yy < bh; ++yy) {
|
|
uint32_t *inpix = inBmp.GetPixels();
|
|
uint32_t *outpix = bmp.data();
|
|
outpix += x + (y + yy) * ew;
|
|
inpix += yy * bw;
|
|
for (unsigned int j = bw; j; --j) {
|
|
*(outpix++) = ProcessPixel(*(inpix++));
|
|
}
|
|
}
|
|
}
|
|
|
|
isWhite = false;
|
|
}
|
|
|
|
SWImageManager::~SWImageManager() {}
|
|
|
|
Handle<SWImage> SWImageManager::RegisterImage(const std::string &name) {
|
|
auto it = images.find(name);
|
|
if (it == images.end()) {
|
|
Handle<Bitmap> bitmap = Bitmap::Load(name);
|
|
Handle<SWImage> image = CreateImage(*bitmap);
|
|
images.insert(std::make_pair(name, image));
|
|
return image;
|
|
} else {
|
|
return it->second;
|
|
}
|
|
}
|
|
|
|
Handle<SWImage> SWImageManager::CreateImage(Bitmap &bitmap) {
|
|
return Handle<SWImage>::New(bitmap);
|
|
}
|
|
|
|
void SWImageManager::ClearCache() { images.clear(); }
|
|
} // namespace draw
|
|
} // namespace spades
|