make the icons program a C app.

diff --git a/tests/icons.cpp b/tests/icons.c
similarity index 79%
rename from tests/icons.cpp
rename to tests/icons.c
index cef68cc..eba4504 100644 (file)
--- a/tests/icons.cpp
+++ b/tests/icons.c
@@ -2,28 +2,29 @@
 #include <X11/Xutil.h>
 #include <X11/Xatom.h>
 #include <X11/cursorfont.h>
-#include <cstdlib>
-#include <cstdio>
-#include <cassert>
+#include <stdlib.h>
+#include <stdio.h>
+#include <assert.h>
 
 Window findClient(Display *d, Window win)
 {
   Window r, *children;
-  unsigned int n;
+  unsigned int n, i;
+  Atom state = XInternAtom(d, "WM_STATE", True);
+  Atom ret_type;
+  int ret_format;
+  unsigned long ret_items, ret_bytesleft;
+  unsigned long *prop_return;
+
   XQueryTree(d, win, &r, &r, &children, &n);
-  for (unsigned int i = 0; i < n; ++i) {
+  for (i = 0; i < n; ++i) {
     Window w = findClient(d, children[i]);
     if (w) return w;
   }
 
   // try me
-  Atom state = XInternAtom(d, "WM_STATE", true);
-  Atom ret_type;
-  int ret_format;
-  unsigned long ret_items, ret_bytesleft;
-  unsigned long *prop_return;
   XGetWindowProperty(d, win, state, 0, 1,
-                    false, state, &ret_type, &ret_format,
+                    False, state, &ret_type, &ret_format,
                     &ret_items, &ret_bytesleft,
                     (unsigned char**) &prop_return); 
   if (ret_type == None || ret_items < 1)
@@ -35,7 +36,7 @@ int main(int argc, char **argv)
 {
   Display *d = XOpenDisplay(NULL);
   int s = DefaultScreen(d);
-  Atom net_wm_icon = XInternAtom(d, "_NET_WM_ICON", true);
+  Atom net_wm_icon = XInternAtom(d, "_NET_WM_ICON", True);
   Atom ret_type;
   unsigned int winw = 0, winh = 0;
   int ret_format;
@@ -43,56 +44,57 @@ int main(int argc, char **argv)
   const int MAX_IMAGES = 10;
   unsigned long *prop_return[MAX_IMAGES];
   XImage *i[MAX_IMAGES];
-
+  long offset = 0;
+  unsigned int image = 0;
+  unsigned int j; // loop counter
+  
   printf("Click on a window with an icon...\n");
   
   //int id = strtol(argv[1], NULL, 16);
   XUngrabPointer(d, CurrentTime);
   Window id;
   Cursor cur = XCreateFontCursor(d, XC_crosshair);
-  XGrabPointer(d, RootWindow(d, s), false, ButtonPressMask, GrabModeAsync,
+  XGrabPointer(d, RootWindow(d, s), False, ButtonPressMask, GrabModeAsync,
               GrabModeAsync, None, cur, CurrentTime);
   XEvent ev;
-  while (true) {
+  while (1) {
     XNextEvent(d, &ev);
     if (ev.type == ButtonPress) {
       XUngrabPointer(d, CurrentTime);
-      id = ev.xbutton.subwindow;
-      id = findClient(d, id);
+      id = findClient(d, ev.xbutton.subwindow);
       break;
     }
   }
 
   printf("Using window 0x%lx\n", id);
   
-  long offset = 0;
-  int image = 0;
-  
   do {
+    unsigned int w, h;
+    
     XGetWindowProperty(d, id, net_wm_icon, offset++, 1,
-                      false, XA_CARDINAL, &ret_type, &ret_format,
+                      False, XA_CARDINAL, &ret_type, &ret_format,
                       &ret_items, &ret_bytesleft,
                       (unsigned char**) &prop_return[image]);
     if (ret_type == None || ret_items < 1) {
       printf("No icon found\n");
       return 1;
     }
-    unsigned int w = prop_return[image][0];
+    w = prop_return[image][0];
     XFree(prop_return[image]);
 
     XGetWindowProperty(d, id, net_wm_icon, offset++, 1,
-                      false, XA_CARDINAL, &ret_type, &ret_format,
+                      False, XA_CARDINAL, &ret_type, &ret_format,
                       &ret_items, &ret_bytesleft,
                       (unsigned char**) &prop_return[image]);
     if (ret_type == None || ret_items < 1) {
       printf("Failed to get height\n");
       return 1;
     }
-    unsigned int h = prop_return[image][0];
+    h = prop_return[image][0];
     XFree(prop_return[image]);
 
     XGetWindowProperty(d, id, net_wm_icon, offset, w*h,
-                      false, XA_CARDINAL, &ret_type, &ret_format,
+                      False, XA_CARDINAL, &ret_type, &ret_format,
                       &ret_items, &ret_bytesleft,
                       (unsigned char**) &prop_return[image]);
     if (ret_type == None || ret_items < w*h) {
@@ -101,23 +103,23 @@ int main(int argc, char **argv)
     }
     offset += w*h;
 
-    printf("Image dimentions: %d, %d\n", w, h);
+    printf("Found icon with size %dx%d\n", w, h);
   
     i[image] = XCreateImage(d, DefaultVisual(d, s), DefaultDepth(d, s),
                            ZPixmap, 0, NULL, w, h, 32, 0);
     assert(i[image]);
     i[image]->byte_order = LSBFirst;
     i[image]->data = (char*)prop_return[image];
-    for (unsigned int j = 0; j < w*h; j++) {
+    for (j = 0; j < w*h; j++) {
       unsigned char alpha = (unsigned char)i[image]->data[j*4+3];
       unsigned char r = (unsigned char) i[image]->data[j*4+0];
       unsigned char g = (unsigned char) i[image]->data[j*4+1];
       unsigned char b = (unsigned char) i[image]->data[j*4+2];
 
       // background color
-      unsigned char bgr = 40;
-      unsigned char bgg = 0x8f;
-      unsigned char bgb = 40;
+      unsigned char bgr = 0;
+      unsigned char bgg = 0;
+      unsigned char bgb = 0;
       
       r = bgr + (r - bgr) * alpha / 256;
       g = bgg + (g - bgg) * alpha / 256;
@@ -133,7 +135,7 @@ int main(int argc, char **argv)
 
     ++image;
   } while (ret_bytesleft > 0 && image < MAX_IMAGES);
-  
+
   Window win = XCreateSimpleWindow(d, RootWindow(d, s), 0, 0, winw, winh,
                                   0, 0, 0);
   assert(win);
@@ -143,11 +145,10 @@ int main(int argc, char **argv)
   XFillRectangle(d, p, DefaultGC(d, s), 0, 0, winw, winh);
 
   unsigned int x = 0;
-  for (int j = 0; j < image; ++j) {
+  for (j = 0; j < image; ++j) {
     XPutImage(d, p, DefaultGC(d, s), i[j], 0, 0, x, 0,
              i[j]->width, i[j]->height);
     x += i[j]->width;
-    XFree(prop_return[j]);
     XDestroyImage(i[j]);
   }