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VMDTkinterMenu.C

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00001 
00002 #include "VMDTkinterMenu.h"
00003 
00004 // do the equivalent of
00005 // root.wm_protocol('WM_DELETE_WINDOW', root.wm_withdraw)
00006 
00007 static void preserve_window(PyObject *root) {
00008   PyObject *cb = PyObject_GetAttrString(root, (char *)"wm_withdraw");
00009   if (cb) {
00010     Py_XDECREF(PyObject_CallMethod(root, (char *)"wm_protocol", (char *)"sO",
00011           "WM_DELETE_WINDOW", cb));
00012     Py_DECREF(cb);
00013   }
00014 }
00015 
00016 VMDTkinterMenu::VMDTkinterMenu(const char *menuname, PyObject *theroot,
00017     VMDApp *vmdapp)
00018 : VMDMenu(menuname, vmdapp), root(theroot), func(NULL) { 
00019   if (root) {
00020     Py_INCREF(root);
00021     preserve_window(root);
00022   }
00023 }
00024 
00025 VMDTkinterMenu::~VMDTkinterMenu() {
00026   Py_XDECREF(root);
00027   Py_XDECREF(func);
00028 }
00029 
00030 void VMDTkinterMenu::register_windowproc(PyObject *newfunc) {
00031   Py_XDECREF(func);
00032   func = newfunc;
00033   Py_INCREF(func);
00034 }
00035 
00036 void VMDTkinterMenu::do_on() {
00037   if (!root) {
00038     if (func) {
00039       if (!(root = PyObject_CallObject(func, NULL))) {
00040         // func failed; don't bother calling it again.
00041         Py_DECREF(func);
00042         func = NULL;
00043         return;
00044       }
00045     }
00046     if (root) preserve_window(root);
00047   }
00048 
00049   // root.wm_deiconify()
00050   if (root) {
00051     Py_XDECREF(PyObject_CallMethod(root, (char *)"wm_deiconify", NULL));
00052   }
00053 }
00054 
00055 void VMDTkinterMenu::do_off() {
00056   // root.wm_withdraw()
00057   if (root) {
00058     Py_XDECREF(PyObject_CallMethod(root, (char *)"wm_withdraw", NULL));
00059   }
00060 }
00061 
00062 void VMDTkinterMenu::move(int x, int y) {
00063   // root.wm_geometry(+x+y)
00064   if (root) {
00065     char buf[100];
00066     sprintf(buf, "+%d+%d", x, y);
00067     Py_XDECREF(PyObject_CallMethod(root, (char *)"wm_geometry", "s", buf));
00068   }
00069 }
00070 
00071 void VMDTkinterMenu::where(int &x, int &y) {
00072   // root.wm_geometry()
00073   if (root) {
00074     PyObject *result = PyObject_CallMethod(root, (char *)"wm_geometry", NULL);
00075     if (result) {
00076 #if PY_MAJOR_VERSION >= 3
00077       const char *str = PyUnicode_AsUTF8(result);
00078 #else
00079       char *str = PyString_AsString(result);
00080 #endif
00081       int w, h;
00082       if (sscanf(str, "%dx%d+%d+%d", &w, &h, &x, &y) != 4) {
00083         fprintf(stderr, "couldn't parse output of geometry: %s\n", str);
00084       }
00085       Py_XDECREF(result);
00086     }
00087   } else {
00088     // give default values
00089     x=y=0;
00090   }
00091 }
00092 

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