add an app to display the icons for a window
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Dana Jansens
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6ae8608aed
commit
c735d49979
1 changed files with 163 additions and 0 deletions
163
tests/icons.cpp
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163
tests/icons.cpp
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#include <X11/Xlib.h>
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#include <X11/Xutil.h>
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#include <X11/Xatom.h>
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#include <X11/cursorfont.h>
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#include <cstdlib>
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#include <cstdio>
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#include <cassert>
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Window findClient(Display *d, Window win)
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{
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Window r, *children;
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unsigned int n;
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XQueryTree(d, win, &r, &r, &children, &n);
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for (unsigned int i = 0; i < n; ++i) {
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Window w = findClient(d, children[i]);
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if (w) return w;
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}
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// try me
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Atom state = XInternAtom(d, "WM_STATE", true);
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Atom ret_type;
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int ret_format;
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unsigned long ret_items, ret_bytesleft;
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unsigned long *prop_return;
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XGetWindowProperty(d, win, state, 0, 1,
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false, state, &ret_type, &ret_format,
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&ret_items, &ret_bytesleft,
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(unsigned char**) &prop_return);
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if (ret_type == None || ret_items < 1)
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return None;
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return win; // found it!
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}
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int main(int argc, char **argv)
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{
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Display *d = XOpenDisplay(NULL);
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int s = DefaultScreen(d);
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Atom net_wm_icon = XInternAtom(d, "_NET_WM_ICON", true);
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Atom ret_type;
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unsigned int winw = 0, winh = 0;
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int ret_format;
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unsigned long ret_items, ret_bytesleft;
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const int MAX_IMAGES = 10;
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unsigned long *prop_return[MAX_IMAGES];
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XImage *i[MAX_IMAGES];
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printf("Click on a window with an icon...\n");
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//int id = strtol(argv[1], NULL, 16);
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XUngrabPointer(d, CurrentTime);
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Window id;
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Cursor cur = XCreateFontCursor(d, XC_crosshair);
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XGrabPointer(d, RootWindow(d, s), false, ButtonPressMask, GrabModeAsync,
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GrabModeAsync, None, cur, CurrentTime);
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XEvent ev;
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while (true) {
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XNextEvent(d, &ev);
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if (ev.type == ButtonPress) {
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XUngrabPointer(d, CurrentTime);
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id = ev.xbutton.subwindow;
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id = findClient(d, id);
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break;
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}
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}
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printf("Using window 0x%lx\n", id);
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long offset = 0;
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int image = 0;
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do {
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XGetWindowProperty(d, id, net_wm_icon, offset++, 1,
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false, XA_CARDINAL, &ret_type, &ret_format,
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&ret_items, &ret_bytesleft,
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(unsigned char**) &prop_return[image]);
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if (ret_type == None || ret_items < 1) {
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printf("No icon found\n");
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return 1;
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}
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unsigned int w = prop_return[image][0];
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XFree(prop_return[image]);
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XGetWindowProperty(d, id, net_wm_icon, offset++, 1,
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false, XA_CARDINAL, &ret_type, &ret_format,
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&ret_items, &ret_bytesleft,
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(unsigned char**) &prop_return[image]);
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if (ret_type == None || ret_items < 1) {
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printf("Failed to get height\n");
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return 1;
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}
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unsigned int h = prop_return[image][0];
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XFree(prop_return[image]);
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XGetWindowProperty(d, id, net_wm_icon, offset, w*h,
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false, XA_CARDINAL, &ret_type, &ret_format,
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&ret_items, &ret_bytesleft,
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(unsigned char**) &prop_return[image]);
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if (ret_type == None || ret_items < w*h) {
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printf("Failed to get image data\n");
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return 1;
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}
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offset += w*h;
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printf("Image dimentions: %d, %d\n", w, h);
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i[image] = XCreateImage(d, DefaultVisual(d, s), DefaultDepth(d, s),
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ZPixmap, 0, NULL, w, h, 32, 0);
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assert(i[image]);
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i[image]->byte_order = LSBFirst;
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i[image]->data = (char*)prop_return[image];
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for (unsigned int j = 0; j < w*h; j++) {
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unsigned char alpha = (unsigned char)i[image]->data[j*4+3];
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unsigned char r = (unsigned char) i[image]->data[j*4+0];
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unsigned char g = (unsigned char) i[image]->data[j*4+1];
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unsigned char b = (unsigned char) i[image]->data[j*4+2];
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// background color
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unsigned char bgr = 40;
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unsigned char bgg = 0x8f;
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unsigned char bgb = 40;
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r = bgr + (r - bgr) * alpha / 256;
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g = bgg + (g - bgg) * alpha / 256;
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b = bgb + (b - bgb) * alpha / 256;
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i[image]->data[j*4+0] = (char) r;
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i[image]->data[j*4+1] = (char) g;
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i[image]->data[j*4+2] = (char) b;
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}
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winw += w;
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if (h > winh) winh = h;
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++image;
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} while (ret_bytesleft > 0 && image < MAX_IMAGES);
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Window win = XCreateSimpleWindow(d, RootWindow(d, s), 0, 0, winw, winh,
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0, 0, 0);
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assert(win);
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XMapWindow(d, win);
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Pixmap p = XCreatePixmap(d, win, winw, winh, DefaultDepth(d, s));
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XFillRectangle(d, p, DefaultGC(d, s), 0, 0, winw, winh);
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unsigned int x = 0;
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for (int j = 0; j < image; ++j) {
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XPutImage(d, p, DefaultGC(d, s), i[j], 0, 0, x, 0,
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i[j]->width, i[j]->height);
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x += i[j]->width;
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XFree(prop_return[j]);
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XDestroyImage(i[j]);
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}
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XSetWindowBackgroundPixmap(d, win, p);
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XClearWindow(d, win);
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XFlush(d);
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getchar();
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XFreePixmap(d, p);
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XCloseDisplay(d);
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}
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