/** Create a scaled icon. */
ScaledIconNode *CreateScaledRenderIcon(IconNode *icon,
int width, int height) {
ScaledIconNode *result = NULL;
#ifdef USE_XRENDER
XRenderPictFormat *fp;
XColor color;
GC maskGC;
XImage *destImage;
XImage *destMask;
unsigned long alpha;
int index, yindex;
int x, y;
int imageLine;
int maskLine;
Assert(icon);
if(!haveRender || !icon->useRender) {
return NULL;
}
result = Allocate(sizeof(ScaledIconNode));
result->next = icon->nodes;
icon->nodes = result;
result->width = width;
result->height = height;
width = icon->image->width;
height = icon->image->height;
result->mask = JXCreatePixmap(display, rootWindow, width, height, 8);
maskGC = JXCreateGC(display, result->mask, 0, NULL);
result->image = JXCreatePixmap(display, rootWindow, width, height,
rootDepth);
destImage = JXCreateImage(display, rootVisual, rootDepth, ZPixmap, 0,
NULL, width, height, 8, 0);
destImage->data = Allocate(sizeof(unsigned long) * width * height);
destMask = JXCreateImage(display, rootVisual, 8, ZPixmap, 0,
NULL, width, height, 8, 0);
destMask->data = Allocate(width * height);
imageLine = 0;
maskLine = 0;
for(y = 0; y < height; y++) {
yindex = y * icon->image->width;
for(x = 0; x < width; x++) {
index = 4 * (yindex + x);
alpha = icon->image->data[index];
color.red = icon->image->data[index + 1];
color.red |= color.red << 8;
color.green = icon->image->data[index + 2];
color.green |= color.green << 8;
color.blue = icon->image->data[index + 3];
color.blue |= color.blue << 8;
color.red = (color.red * alpha) >> 8;
color.green = (color.green * alpha) >> 8;
color.blue = (color.blue * alpha) >> 8;
GetColor(&color);
XPutPixel(destImage, x, y, color.pixel);
destMask->data[maskLine + x] = alpha;
}
imageLine += destImage->bytes_per_line;
maskLine += destMask->bytes_per_line;
}
/* Render the image data to the image pixmap. */
JXPutImage(display, result->image, rootGC, destImage, 0, 0, 0, 0,
width, height);
Release(destImage->data);
destImage->data = NULL;
JXDestroyImage(destImage);
/* Render the alpha data to the mask pixmap. */
JXPutImage(display, result->mask, maskGC, destMask, 0, 0, 0, 0,
width, height);
Release(destMask->data);
destMask->data = NULL;
JXDestroyImage(destMask);
JXFreeGC(display, maskGC);
/* Create the alpha picture. */
fp = JXRenderFindStandardFormat(display, PictStandardA8);
Assert(fp);
result->alphaPicture = JXRenderCreatePicture(display, result->mask, fp,
0, NULL);
/* Create the render picture. */
fp = JXRenderFindVisualFormat(display, rootVisual);
Assert(fp);
result->imagePicture = JXRenderCreatePicture(display, result->image, fp,
0, NULL);
/* Free unneeded pixmaps. */
JXFreePixmap(display, result->image);
result->image = None;
JXFreePixmap(display, result->mask);
result->mask = None;
#endif
return result;
}
/** Get a scaled icon. */
ScaledIconNode *GetScaledIcon(IconNode *icon, long fg,
int rwidth, int rheight)
{
XColor color;
XImage *image;
ScaledIconNode *np;
GC maskGC;
int x, y;
int scalex, scaley; /* Fixed point. */
int srcx, srcy; /* Fixed point. */
int ratio; /* Fixed point. */
int nwidth, nheight;
unsigned char *data;
Assert(icon);
Assert(icon->image);
if(rwidth == 0) {
rwidth = icon->image->width;
}
if(rheight == 0) {
rheight = icon->image->height;
}
ratio = (icon->image->width << 16) / icon->image->height;
nwidth = Min(rwidth, (rheight * ratio) >> 16);
nheight = Min(rheight, (nwidth << 16) / ratio);
nwidth = (nheight * ratio) >> 16;
if(nwidth < 1) {
nwidth = 1;
}
if(nheight < 1) {
nheight = 1;
}
/* Check if this size already exists.
* Note that XRender scales on the fly.
*/
for(np = icon->nodes; np; np = np->next) {
#ifdef USE_XRENDER
if(np->imagePicture != None) {
np->width = nwidth;
np->height = nheight;
return np;
}
#endif
if(np->width == nwidth && np->height == nheight) {
if(!icon->image->bitmap || np->fg == fg) {
return np;
}
}
}
/* See if we can use XRender to create the icon. */
#ifdef USE_XRENDER
if(haveRender) {
np = CreateScaledRenderIcon(icon, fg, nwidth, nheight);
/* Don't keep the image data around after creating the icon. */
Release(icon->image->data);
icon->image->data = NULL;
return np;
}
#endif
/* Create a new ScaledIconNode the old-fashioned way. */
np = Allocate(sizeof(ScaledIconNode));
np->fg = fg;
np->width = nwidth;
np->height = nheight;
np->next = icon->nodes;
#ifdef USE_XRENDER
np->imagePicture = None;
#endif
icon->nodes = np;
/* Create a mask. */
np->mask = JXCreatePixmap(display, rootWindow, nwidth, nheight, 1);
maskGC = JXCreateGC(display, np->mask, 0, NULL);
JXSetForeground(display, maskGC, 0);
JXFillRectangle(display, np->mask, maskGC, 0, 0, nwidth, nheight);
JXSetForeground(display, maskGC, 1);
/* Create a temporary XImage for scaling. */
image = JXCreateImage(display, rootVisual, rootDepth, ZPixmap, 0,
NULL, nwidth, nheight, 8, 0);
image->data = Allocate(sizeof(unsigned long) * nwidth * nheight);
/* Determine the scale factor. */
scalex = (icon->image->width << 16) / nwidth;
scaley = (icon->image->height << 16) / nheight;
data = icon->image->data;
srcy = 0;
for(y = 0; y < nheight; y++) {
const int yindex = (srcy >> 16) * icon->image->width;
srcx = 0;
for(x = 0; x < nwidth; x++) {
if(icon->image->bitmap) {
const int index = yindex + (srcx >> 16);
const int offset = index >> 3;
const int mask = 1 << (index & 7);
if(data[offset] & mask) {
JXDrawPoint(display, np->mask, maskGC, x, y);
XPutPixel(image, x, y, fg);
}
} else {
const int yindex = (srcy >> 16) * icon->image->width;
const int index = 4 * (yindex + (srcx >> 16));
color.red = data[index + 1];
color.red |= color.red << 8;
color.green = data[index + 2];
color.green |= color.green << 8;
color.blue = data[index + 3];
color.blue |= color.blue << 8;
GetColor(&color);
XPutPixel(image, x, y, color.pixel);
if(data[index] >= 128) {
JXDrawPoint(display, np->mask, maskGC, x, y);
}
}
srcx += scalex;
}
srcy += scaley;
}
