ImageNode *LoadImageFromDrawable(Drawable pmap, Pixmap mask)
{
ImageNode *result = NULL;
XImage *mask_image = NULL;
XImage *icon_image = NULL;
Window rwindow;
int x, y;
unsigned int width, height;
unsigned int border_width;
unsigned int depth;
JXGetGeometry(display, pmap, &rwindow, &x, &y, &width, &height,
&border_width, &depth);
icon_image = JXGetImage(display, pmap, 0, 0, width, height,
AllPlanes, ZPixmap);
if(mask != None) {
mask_image = JXGetImage(display, mask, 0, 0, width, height, 1, ZPixmap);
}
if(icon_image) {
result = CreateImageFromXImages(icon_image, mask_image);
JXDestroyImage(icon_image);
}
if(mask_image) {
JXDestroyImage(mask_image);
}
return result;
}
/** 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;
}
