* let's not bother with the blur here quite yet; let's do it Right(tm) later in an image effects lib, and when we can actually operate on the backing store
* if there is not -pressed element, still paint something proper svn path=/trunk/KDE/kdebase/workspace/lib/plasma/; revision=672363
This commit is contained in:
Aaron J. Seigo
parent
a043e502f3
commit
a80c5349e4
255
widgets/icon.cpp
255
widgets/icon.cpp
@ -28,244 +28,6 @@
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namespace Plasma
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{
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// Stack Blur Algorithm by Mario Klingemann <mario@quasimondo.com>
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void fastbluralpha(QImage &img, int radius)
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{
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if (radius < 1) {
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return;
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}
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QRgb *pix = (QRgb*)img.bits();
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int w = img.width();
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int h = img.height();
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int wm = w-1;
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int hm = h-1;
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int wh = w*h;
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int div = radius+radius+1;
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int *r = new int[wh];
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int *g = new int[wh];
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int *b = new int[wh];
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int *a = new int[wh];
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int rsum, gsum, bsum, asum, x, y, i, yp, yi, yw;
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QRgb p;
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int *vmin = new int[qMax(w,h)];
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int divsum = (div+1)>>1;
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divsum *= divsum;
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int *dv = new int[256*divsum];
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for (i=0; i < 256*divsum; ++i) {
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dv[i] = (i/divsum);
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}
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yw = yi = 0;
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int **stack = new int*[div];
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for(int i = 0; i < div; ++i) {
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stack[i] = new int[4];
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}
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int stackpointer;
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int stackstart;
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int *sir;
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int rbs;
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int r1 = radius+1;
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int routsum, goutsum, boutsum, aoutsum;
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int rinsum, ginsum, binsum, ainsum;
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for (y = 0; y < h; ++y){
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rinsum = ginsum = binsum = ainsum
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= routsum = goutsum = boutsum = aoutsum
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= rsum = gsum = bsum = asum = 0;
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for(i =- radius; i <= radius; ++i) {
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p = pix[yi+qMin(wm,qMax(i,0))];
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sir = stack[i+radius];
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sir[0] = qRed(p);
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sir[1] = qGreen(p);
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sir[2] = qBlue(p);
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sir[3] = qAlpha(p);
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rbs = r1-abs(i);
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rsum += sir[0]*rbs;
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gsum += sir[1]*rbs;
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bsum += sir[2]*rbs;
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asum += sir[3]*rbs;
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if (i > 0){
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rinsum += sir[0];
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ginsum += sir[1];
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binsum += sir[2];
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ainsum += sir[3];
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} else {
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routsum += sir[0];
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goutsum += sir[1];
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boutsum += sir[2];
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aoutsum += sir[3];
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}
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}
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stackpointer = radius;
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for (x=0; x < w; ++x) {
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r[yi] = dv[rsum];
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g[yi] = dv[gsum];
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b[yi] = dv[bsum];
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a[yi] = dv[asum];
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rsum -= routsum;
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gsum -= goutsum;
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bsum -= boutsum;
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asum -= aoutsum;
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stackstart = stackpointer-radius+div;
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sir = stack[stackstart%div];
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routsum -= sir[0];
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goutsum -= sir[1];
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boutsum -= sir[2];
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aoutsum -= sir[3];
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if (y == 0) {
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vmin[x] = qMin(x+radius+1,wm);
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}
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p = pix[yw+vmin[x]];
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sir[0] = qRed(p);
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sir[1] = qGreen(p);
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sir[2] = qBlue(p);
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sir[3] = qAlpha(p);
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rinsum += sir[0];
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ginsum += sir[1];
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binsum += sir[2];
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ainsum += sir[3];
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rsum += rinsum;
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gsum += ginsum;
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bsum += binsum;
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asum += ainsum;
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stackpointer = (stackpointer+1)%div;
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sir = stack[(stackpointer)%div];
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routsum += sir[0];
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goutsum += sir[1];
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boutsum += sir[2];
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aoutsum += sir[3];
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rinsum -= sir[0];
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ginsum -= sir[1];
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binsum -= sir[2];
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ainsum -= sir[3];
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++yi;
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}
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yw += w;
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}
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for (x=0; x < w; ++x){
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rinsum = ginsum = binsum = ainsum
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= routsum = goutsum = boutsum = aoutsum
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= rsum = gsum = bsum = asum = 0;
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yp =- radius * w;
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for(i=-radius; i <= radius; ++i) {
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yi=qMax(0,yp)+x;
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sir = stack[i+radius];
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sir[0] = r[yi];
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sir[1] = g[yi];
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sir[2] = b[yi];
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sir[3] = a[yi];
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rbs = r1-abs(i);
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rsum += r[yi]*rbs;
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gsum += g[yi]*rbs;
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bsum += b[yi]*rbs;
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asum += a[yi]*rbs;
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if (i > 0) {
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rinsum += sir[0];
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ginsum += sir[1];
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binsum += sir[2];
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ainsum += sir[3];
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} else {
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routsum += sir[0];
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goutsum += sir[1];
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boutsum += sir[2];
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aoutsum += sir[3];
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}
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if (i < hm){
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yp += w;
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}
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}
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yi = x;
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stackpointer = radius;
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for (y=0; y < h; ++y){
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pix[yi] = qRgba(dv[rsum], dv[gsum], dv[bsum], dv[asum]);
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rsum -= routsum;
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gsum -= goutsum;
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bsum -= boutsum;
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asum -= aoutsum;
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stackstart = stackpointer-radius+div;
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sir = stack[stackstart%div];
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routsum -= sir[0];
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goutsum -= sir[1];
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boutsum -= sir[2];
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aoutsum -= sir[3];
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if (x==0){
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vmin[y] = qMin(y+r1,hm)*w;
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}
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p = x+vmin[y];
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sir[0] = r[p];
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sir[1] = g[p];
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sir[2] = b[p];
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sir[3] = a[p];
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rinsum += sir[0];
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ginsum += sir[1];
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binsum += sir[2];
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ainsum += sir[3];
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rsum += rinsum;
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gsum += ginsum;
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bsum += binsum;
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asum += ainsum;
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stackpointer = (stackpointer+1)%div;
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sir = stack[stackpointer];
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routsum += sir[0];
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goutsum += sir[1];
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boutsum += sir[2];
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aoutsum += sir[3];
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rinsum -= sir[0];
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ginsum -= sir[1];
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binsum -= sir[2];
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ainsum -= sir[3];
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yi += w;
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}
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}
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delete [] r;
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delete [] g;
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delete [] b;
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delete [] a;
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delete [] vmin;
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delete [] dv;
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}
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class Icon::Private
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{
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@ -375,23 +137,14 @@ void Icon::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWid
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case Private::PressedState:
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if (d->svgElements & Private::SvgBackgroundPressed) {
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element = "background-pressed";
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} else if (d->svgElements & Private::SvgBackgroundHover) {
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element = "background-hover";
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}
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break;
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}
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if (!element.isEmpty()) {
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painter->save();
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if (element == "background-pressed") {
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QImage img(sizeHint().width(), sizeHint().height(), QImage::Format_ARGB32);
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img.fill(qRgba(0,0,0,0));
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QPainter p(&img);
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d->svg.paint(&p, 0, 0, element);
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fastbluralpha(img, 2);
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painter->drawImage(QPointF(0,0), img);
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} else {
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d->svg.paint(painter, 0, 0, element);
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}
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painter->restore();
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d->svg.paint(painter, 0, 0, element);
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element = QString();
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}
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@ -434,6 +187,8 @@ void Icon::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWid
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case Private::PressedState:
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if (d->svgElements & Private::SvgForegroundPressed) {
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element = "foreground-pressed";
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} else if (d->svgElements & Private::SvgForegroundHover) {
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element = "foreground-hover";
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}
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break;
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}
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