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#include <string>
#include <sstream>
#include "imagemagickwrapper.h"
#include "config.h"
#include "imagescaler.h"
cImageMagickWrapper::cImageMagickWrapper() {
InitializeMagick(NULL);
}
cImageMagickWrapper::~cImageMagickWrapper() {
}
cImage *cImageMagickWrapper::CreateImage(int width, int height, bool preserveAspect) {
int w, h;
w = buffer.columns();
h = buffer.rows();
if (width == 0)
width = w;
if (height == 0)
height = h;
if (preserveAspect) {
unsigned scale_w = 1000 * width / w;
unsigned scale_h = 1000 * height / h;
if (scale_w > scale_h)
width = w * height / h;
else
height = h * width / w;
}
const PixelPacket *pixels = buffer.getConstPixels(0, 0, w, h);
cImage *image = new cImage(cSize(width, height));
tColor *imgData = (tColor *)image->Data();
if (w != width || h != height) {
ImageScaler scaler;
scaler.SetImageParameters(imgData, width, width, height, w, h);
for (const void *pixels_end = &pixels[w*h]; pixels < pixels_end; ++pixels)
scaler.PutSourcePixel(pixels->blue / ((MaxRGB + 1) / 256),
pixels->green / ((MaxRGB + 1) / 256),
pixels->red / ((MaxRGB + 1) / 256),
~((unsigned char)(pixels->opacity / ((MaxRGB + 1) / 256))));
return image;
}
for (const void *pixels_end = &pixels[width*height]; pixels < pixels_end; ++pixels)
*imgData++ = ((~int(pixels->opacity / ((MaxRGB + 1) / 256)) << 24) |
(int(pixels->green / ((MaxRGB + 1) / 256)) << 8) |
(int(pixels->red / ((MaxRGB + 1) / 256)) << 16) |
(int(pixels->blue / ((MaxRGB + 1) / 256)) ));
return image;
}
cImage cImageMagickWrapper::CreateImageCopy() {
int w, h;
w = buffer.columns();
h = buffer.rows();
cImage image (cSize(w, h));
const PixelPacket *pixels = buffer.getConstPixels(0, 0, w, h);
for (int iy = 0; iy < h; ++iy) {
for (int ix = 0; ix < w; ++ix) {
tColor col = (~int(pixels->opacity * 255 / MaxRGB) << 24)
| (int(pixels->green * 255 / MaxRGB) << 8)
| (int(pixels->red * 255 / MaxRGB) << 16)
| (int(pixels->blue * 255 / MaxRGB) );
image.SetPixel(cPoint(ix, iy), col);
++pixels;
}
}
return image;
}
bool cImageMagickWrapper::LoadImage(std::string FileName, std::string Path, std::string Extension) {
try {
std::stringstream sstrImgFile;
sstrImgFile << Path << FileName << "." << Extension;
std::string imgFile = sstrImgFile.str();
if (config.GetValue("debugImageLoading"))
dsyslog("nopacity: trying to load: %s", imgFile.c_str());
buffer.read(imgFile.c_str());
if (config.GetValue("debugImageLoading"))
dsyslog("nopacity: %s sucessfully loaded", imgFile.c_str());
} catch( Magick::Warning &warning ) {
if (config.GetValue("debugImageLoading"))
dsyslog("nopacity: Magick Warning: %s", warning.what());
return true;
} catch( Magick::Error &error ) {
if (config.GetValue("debugImageLoading"))
dsyslog("nopacity: Magick Error: %s", error.what());
return false;
} catch(...) {
if (config.GetValue("debugImageLoading"))
dsyslog("nopacity: an unknown Magick error occured during image loading");
return false;
}
return true;
}
bool cImageMagickWrapper::LoadImage(const char *fullpath) {
if ((fullpath == NULL) || (strlen(fullpath) < 5))
return false;
try {
if (config.GetValue("debugImageLoading"))
dsyslog("nopacity: trying to load: %s", fullpath);
buffer.read(fullpath);
if (config.GetValue("debugImageLoading"))
dsyslog("nopacity: %s sucessfully loaded", fullpath);
} catch( Magick::Warning &warning ) {
if (config.GetValue("debugImageLoading"))
dsyslog("nopacity: Magick Warning: %s", warning.what());
return true;
} catch( Magick::Error &error ) {
if (config.GetValue("debugImageLoading"))
dsyslog("nopacity: Magick Error: %s", error.what());
return false;
} catch(...) {
if (config.GetValue("debugImageLoading"))
dsyslog("nopacity: an unknown Magick error occured during image loading");
return false;
}
return true;
}
Color cImageMagickWrapper::Argb2Color(tColor col) {
tIndex alpha = (col & 0xFF000000) >> 24;
tIndex red = (col & 0x00FF0000) >> 16;
tIndex green = (col & 0x0000FF00) >> 8;
tIndex blue = (col & 0x000000FF);
Color color(MaxRGB*red/255, MaxRGB*green/255, MaxRGB*blue/255, MaxRGB*(0xFF-alpha)/255);
return color;
}
void cImageMagickWrapper::CreateGradient(tColor back, tColor blend, int width, int height, double wfactor, double hfactor) {
Color Back = Argb2Color(back);
Color Blend = Argb2Color(blend);
int maxw = MaxRGB * wfactor;
int maxh = MaxRGB * hfactor;
Image imgblend(Geometry(width, height), Blend);
imgblend.modifyImage();
imgblend.type(TrueColorMatteType);
PixelPacket *pixels = imgblend.getPixels(0, 0, width, height);
for (int x = 0; x < width; x++) {
for (int y = 0; y < height; y++) {
PixelPacket *pixel = pixels + y * width + x;
int opacity = (maxw / width * x + maxh - maxh / height * y) / 2;
pixel->opacity = (opacity <= MaxRGB) ? opacity : MaxRGB;
}
}
imgblend.syncPixels();
Image imgback(Geometry(width, height), Back);
imgback.composite(imgblend, 0, 0, OverCompositeOp);
buffer = imgback;
}
void cImageMagickWrapper::CreateBackground(tColor back, tColor blend, int width, int height, bool mirror) {
CreateGradient(back, blend, width, height, 0.8, 0.8);
if (mirror)
buffer.flop();
}
void cImageMagickWrapper::CreateBackgroundReverse(tColor back, tColor blend, int width, int height) {
CreateGradient(back, blend, width, height, 1.3, 0.7);
}
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