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Wizard.c

/* 
A* -------------------------------------------------------------------
B* This file contains source code for the PyMOL computer program
C* copyright 1998-2000 by Warren Lyford Delano of DeLano Scientific. 
D* -------------------------------------------------------------------
E* It is unlawful to modify or remove this copyright notice.
F* -------------------------------------------------------------------
G* Please see the accompanying LICENSE file for further information. 
H* -------------------------------------------------------------------
I* Additional authors of this source file include:
-* 
-* 
-*
Z* -------------------------------------------------------------------
*/

#include"os_predef.h"
#include"os_std.h"
#include"os_gl.h"
#include"Err.h"
#include"main.h"

#include"MemoryDebug.h"
#include"Ortho.h"
#include"P.h"
#include"PConv.h"
#include"PopUp.h"

#include"Wizard.h"
#include"Scene.h"

#include"Executive.h"
#include"Block.h"
#include"Text.h"

#define cWizBlank      0
#define cWizTypeText   1
#define cWizTypeButton 2
#define cWizTypePopUp  3

#define cWizEventPick    1
#define cWizEventSelect  2
#define cWizEventKey     4
#define cWizEventSpecial 8
#define cWizEventScene   16
#define cWizEventState   32
#define cWizEventFrame   64
#define cWizEventDirty  128
#define cWizEventView   256
#define cWizEventPosition 512

00053 typedef struct {
  int type;
  WordType text;
  OrthoLineType code;
} WizardLine;

00059 struct _CWizard {
  Block *Block;
  PyObject **Wiz;
  WizardLine *Line;
  ov_size NLine;
  ov_diff Stack;
  int Pressed;
  int EventMask;
  int Dirty;
  int LastUpdatedState;
  int LastUpdatedFrame;
  float LastUpdatedPosition[3];
  SceneViewType LastUpdatedView;
};

#define cWizardLeftMargin 2
#define cWizardTopMargin 0
#define cWizardClickOffset 2

void WizardDirty(PyMOLGlobals * G)
{
  register CWizard *I = G->Wizard;
  I->Dirty = true;
  OrthoDirty(G);
}

int WizardUpdate(PyMOLGlobals * G)
{
  register CWizard *I = G->Wizard;
  int result = false;

  if(OrthoGetDirty(G)) {
    WizardDoDirty(G);
  }

  {
    int frame = SettingGetGlobal_i(G, cSetting_frame);
    if(frame != I->LastUpdatedFrame) {
      I->LastUpdatedFrame = frame;
      WizardDoFrame(G);
    }
  }
  {
    int state = SettingGetGlobal_i(G, cSetting_state);
    if(state != I->LastUpdatedState) {
      I->LastUpdatedState = state;
      WizardDoState(G);
    }
  }
  WizardDoPosition(G, false);
  WizardDoView(G, false);
  if(I->Dirty) {
    WizardRefresh(G);
    I->Dirty = false;
    result = true;
  }
  return result;
}

void WizardPurgeStack(PyMOLGlobals * G)
{
#ifndef _PYMOL_NOPY
  int blocked;
  ov_diff a;
  register CWizard *I = G->Wizard;
  blocked = PAutoBlock(G);
  for(a = I->Stack; a >= 0; a--)
    Py_XDECREF(I->Wiz[a]);
  I->Stack = -1;
  PAutoUnblock(G, blocked);
#endif
}

int WizardDoSelect(PyMOLGlobals * G, char *name)
{
/**
 * Run when user selects something with the mouse, in a wizard
 */
#ifdef _PYMOL_NOPY
  return 0;
#else
  /* grab 'this' */
  OrthoLineType buf;
  register CWizard *I = G->Wizard;
  int result = false;

  /* if the event is a selection and we're listening for selections */
  if(I->EventMask & cWizEventSelect)
    if(I->Stack >= 0)
      if(I->Wiz[I->Stack]) {
      /* log if necessary */
        sprintf(buf, "cmd.get_wizard().do_select('''%s''')", name);
        PLog(G, buf, cPLog_pym);
      /* block and call (in Python) the wizard's do_select */
        PBlock(G);
        if(PyObject_HasAttrString(I->Wiz[I->Stack], "do_select")) {
          result = PTruthCallStr(I->Wiz[I->Stack], "do_select", name);
          if(PyErr_Occurred())
            PyErr_Print();
        }
        PUnblock(G);
      }
  return result;
#endif
}


/*========================================================================*/
void WizardRefresh(PyMOLGlobals * G)
{

#ifndef _PYMOL_NOPY
  register CWizard *I = G->Wizard;
  char *vla = NULL;
  PyObject *P_list;
  ov_size ll;
  PyObject *i;
  ov_size a;
  int blocked;
  blocked = PAutoBlock(G);

  /* get the current prompt */
  if(I->Stack >= 0)
    if(I->Wiz[I->Stack]) {
      vla = NULL;
      if(PyObject_HasAttrString(I->Wiz[I->Stack], "get_prompt")) {
        P_list = PyObject_CallMethod(I->Wiz[I->Stack], "get_prompt", "");
        if(PyErr_Occurred())
          PyErr_Print();
        if(P_list)
          PConvPyListToStringVLA(P_list, &vla);
        Py_XDECREF(P_list);
      }
    }

  OrthoSetWizardPrompt(G, vla);

  /* get the current panel list */

  I->NLine = 0;
  if(I->Stack >= 0)
    if(I->Wiz[I->Stack]) {

      I->EventMask = cWizEventPick + cWizEventSelect;

      if(PyObject_HasAttrString(I->Wiz[I->Stack], "get_event_mask")) {
        i = PyObject_CallMethod(I->Wiz[I->Stack], "get_event_mask", "");
        if(PyErr_Occurred())
          PyErr_Print();
        if(!PConvPyIntToInt(i, &I->EventMask))
          I->EventMask = cWizEventPick + cWizEventSelect;
        Py_XDECREF(i);
      }

      if(PyObject_HasAttrString(I->Wiz[I->Stack], "get_panel")) {
        P_list = PyObject_CallMethod(I->Wiz[I->Stack], "get_panel", "");
        if(PyErr_Occurred())
          PyErr_Print();
        if(P_list) {
          if(PyList_Check(P_list)) {
            ll = PyList_Size(P_list);
            VLACheck(I->Line, WizardLine, ll);
            for(a = 0; a < ll; a++) {
              /* fallback defaults */

              I->Line[a].text[0] = 0;
              I->Line[a].code[0] = 0;
              I->Line[a].type = 0;

              i = PyList_GetItem(P_list, a);
              if(PyList_Check(i))
                if(PyList_Size(i) > 2) {
                  PConvPyObjectToInt(PyList_GetItem(i, 0), &I->Line[a].type);
                  PConvPyObjectToStrMaxLen(PyList_GetItem(i, 1),
                                           I->Line[a].text, sizeof(WordType) - 1);
                  PConvPyObjectToStrMaxLen(PyList_GetItem(i, 2),
                                           I->Line[a].code, sizeof(OrthoLineType) - 1);
                }
            }
            I->NLine = ll;
          }
        }
        Py_XDECREF(P_list);
      }
    }
  if(I->NLine) {
    int LineHeight = SettingGetGlobal_i(G, cSetting_internal_gui_control_size);
    OrthoReshapeWizard(G, LineHeight * I->NLine + 4);
  } else {
    OrthoReshapeWizard(G, 0);
  }
  PAutoUnblock(G, blocked);
#endif
}


/*========================================================================*/
void WizardSet(PyMOLGlobals * G, PyObject * wiz, int replace)
{
#ifndef _PYMOL_NOPY
  register CWizard *I = G->Wizard;
  int blocked;
  blocked = PAutoBlock(G);
  if(I->Wiz) {
    if((!wiz) || (wiz == Py_None) || ((I->Stack >= 0) && replace)) {
      if(I->Stack >= 0) {       /* pop */
        PyObject *old_wiz = I->Wiz[I->Stack];

        /* remove wizard from stack first */

        I->Wiz[I->Stack] = NULL;
        I->Stack--;

        if(old_wiz) {
          /* then call cleanup, etc. */
          if(PyObject_HasAttrString(old_wiz, "cleanup")) {
            PXDecRef(PyObject_CallMethod(old_wiz, "cleanup", ""));
            if(PyErr_Occurred())
              PyErr_Print();
          }
          Py_DECREF(old_wiz);
        }
      }
    }
    if(wiz && (wiz != Py_None)) {       /* push */
      if(wiz) {
        I->Stack++;
        VLACheck(I->Wiz, PyObject *, I->Stack);
        I->Wiz[I->Stack] = wiz;
        if(I->Wiz[I->Stack])
          Py_INCREF(I->Wiz[I->Stack]);
      }
    }
  }
  WizardRefresh(G);
  PAutoUnblock(G, blocked);
#endif
}


/*========================================================================*/
int WizardActive(PyMOLGlobals * G)
{
  register CWizard *I = G->Wizard;
  if(!I->Wiz)
    return (false);
  if(I->Stack < 0)
    return false;
  return (I->Wiz[I->Stack] && 1);
}


/*========================================================================*/
Block *WizardGetBlock(PyMOLGlobals * G)
{
  register CWizard *I = G->Wizard;
  {
    return (I->Block);
  }
}


/*========================================================================*/
int WizardDoPick(PyMOLGlobals * G, int bondFlag)
{
  /**
   * Run when user picks something
   */
#ifdef _PYMOL_NOPY
  return 0;
#else
  register CWizard *I = G->Wizard;
  int result = false;

  /* process the pick if it happened and we're listening for it */
  if(I->EventMask & cWizEventPick)
    if(I->Stack >= 0)
      if(I->Wiz[I->Stack]) {
        if(bondFlag)
          PLog(G, "cmd.get_wizard().do_pick(1)", cPLog_pym);
        else
          PLog(G, "cmd.get_wizard().do_pick(0)", cPLog_pym);

        PBlock(G);
        if(I->Stack >= 0)
          if(I->Wiz[I->Stack]) {
            if(PyObject_HasAttrString(I->Wiz[I->Stack], "do_pick")) {
              result = PTruthCallStr1i(I->Wiz[I->Stack], "do_pick", bondFlag);
              if(PyErr_Occurred())
                PyErr_Print();
            }
          }
        PUnblock(G);
      }
  return result;
#endif
}

int WizardDoKey(PyMOLGlobals * G, unsigned char k, int x, int y, int mod)
{
#ifdef _PYMOL_NOPY
  return 0;
#else
  register CWizard *I = G->Wizard;
  int result = false;
  if(I->EventMask & cWizEventKey)
    if(I->Stack >= 0)
      if(I->Wiz[I->Stack]) {
        OrthoLineType buffer;
        sprintf(buffer, "cmd.get_wizard().do_key(%d,%d,%d,%d)", k, x, y, mod);
        PLog(G, buffer, cPLog_pym);
        PBlock(G);
        if(I->Stack >= 0)
          if(I->Wiz[I->Stack]) {
            if(PyObject_HasAttrString(I->Wiz[I->Stack], "do_key")) {
              result = PTruthCallStr4i(I->Wiz[I->Stack], "do_key", k, x, y, mod);
              if(PyErr_Occurred())
                PyErr_Print();
            }
          }
        PUnblock(G);
      }
  return result;
#endif
}

int WizardDoPosition(PyMOLGlobals * G, int force)
{
#ifdef _PYMOL_NOPY
  return 0;
#else
  register CWizard *I = G->Wizard;
  int result = false;
  if(I->EventMask & cWizEventPosition)
    if(I->Stack >= 0)
      if(I->Wiz[I->Stack]) {
        int changed = force;
        if(!changed) {
          float pos[3];
          SceneGetPos(G, pos);
          changed = ((fabs(pos[0] - I->LastUpdatedPosition[0]) > R_SMALL4) ||
                     (fabs(pos[1] - I->LastUpdatedPosition[1]) > R_SMALL4) ||
                     (fabs(pos[2] - I->LastUpdatedPosition[2]) > R_SMALL4));
        }
        if(changed) {
          SceneGetPos(G, I->LastUpdatedPosition);
          PBlock(G);
          if(I->Stack >= 0)
            if(I->Wiz[I->Stack]) {
              if(PyObject_HasAttrString(I->Wiz[I->Stack], "do_position")) {
                result = PTruthCallStr0(I->Wiz[I->Stack], "do_position");
                if(PyErr_Occurred())
                  PyErr_Print();
              }
            }
          PUnblock(G);
        }
      }
  return result;
#endif
}

int WizardDoView(PyMOLGlobals * G, int force)
{
#ifdef _PYMOL_NOPY
  return 0;
#else
  register CWizard *I = G->Wizard;
  int result = false;
  if(I->EventMask & cWizEventView)
    if(I->Stack >= 0)
      if(I->Wiz[I->Stack]) {
        int changed = force;
        if(!changed) {
          SceneViewType view;
          SceneGetView(G, view);
          changed = !SceneViewEqual(view, I->LastUpdatedView);
        }
        if(changed) {
          SceneGetView(G, I->LastUpdatedView);
          PBlock(G);
          if(I->Stack >= 0)
            if(I->Wiz[I->Stack]) {
              if(PyObject_HasAttrString(I->Wiz[I->Stack], "do_view")) {
                result = PTruthCallStr0(I->Wiz[I->Stack], "do_view");
                if(PyErr_Occurred())
                  PyErr_Print();
              }
            }
          PUnblock(G);
        }
      }
  return result;
#endif
}

int WizardDoScene(PyMOLGlobals * G)
{
#ifdef _PYMOL_NOPY
  return 0;
#else
  register CWizard *I = G->Wizard;
  int result = false;
  if(I->EventMask & cWizEventScene)
    if(I->Stack >= 0)
      if(I->Wiz[I->Stack]) {
        OrthoLineType buffer;
        sprintf(buffer, "cmd.get_wizard().do_scene()");
        PLog(G, buffer, cPLog_pym);
        PBlock(G);
        if(I->Stack >= 0)
          if(I->Wiz[I->Stack]) {
            if(PyObject_HasAttrString(I->Wiz[I->Stack], "do_scene")) {
              result = PTruthCallStr0(I->Wiz[I->Stack], "do_scene");
              if(PyErr_Occurred())
                PyErr_Print();
            }
          }
        PUnblock(G);
      }
  return result;
#endif
}

int WizardDoDirty(PyMOLGlobals * G)
{
#ifdef _PYMOL_NOPY
  return 0;
#else
  register CWizard *I = G->Wizard;
  int result = false;
  if(I->EventMask & cWizEventDirty)
    if(I->Stack >= 0)
      if(I->Wiz[I->Stack]) {
        OrthoLineType buffer;
        sprintf(buffer, "cmd.get_wizard().do_dirty()");
        PLog(G, buffer, cPLog_pym);
        PBlock(G);
        if(I->Stack >= 0)
          if(I->Wiz[I->Stack]) {
            if(PyObject_HasAttrString(I->Wiz[I->Stack], "do_dirty")) {
              result = PTruthCallStr0(I->Wiz[I->Stack], "do_dirty");
              if(PyErr_Occurred())
                PyErr_Print();
            }
          }
        PUnblock(G);
      }
  return result;
#endif
}

int WizardDoState(PyMOLGlobals * G)
{
#ifdef _PYMOL_NOPY
  return 0;
#else
  register CWizard *I = G->Wizard;
  int result = false;
  if(I->EventMask & cWizEventState)
    if(I->Stack >= 0)
      if(I->Wiz[I->Stack]) {
        OrthoLineType buffer;
        int state = SettingGetGlobal_i(G, cSetting_state) + 1;
        sprintf(buffer, "cmd.get_wizard().do_state(%d)", state);
        PLog(G, buffer, cPLog_pym);
        PBlock(G);
        if(I->Stack >= 0)
          if(I->Wiz[I->Stack]) {
            if(PyObject_HasAttrString(I->Wiz[I->Stack], "do_state")) {
              result = PTruthCallStr1i(I->Wiz[I->Stack], "do_state", state);
              if(PyErr_Occurred())
                PyErr_Print();
            }
          }
        PUnblock(G);
      }
  return result;
#endif
}

int WizardDoFrame(PyMOLGlobals * G)
{
#ifdef _PYMOL_NOPY
  return 0;
#else
  register CWizard *I = G->Wizard;
  int result = false;
  if(I->EventMask & cWizEventFrame)
    if(I->Stack >= 0)
      if(I->Wiz[I->Stack]) {
        OrthoLineType buffer;
        int frame = SettingGetGlobal_i(G, cSetting_frame) + 1;
        sprintf(buffer, "cmd.get_wizard().do_frame(%d)", frame);
        PLog(G, buffer, cPLog_pym);
        PBlock(G);
        if(I->Stack >= 0)
          if(I->Wiz[I->Stack]) {
            if(PyObject_HasAttrString(I->Wiz[I->Stack], "do_frame")) {
              result = PTruthCallStr1i(I->Wiz[I->Stack], "do_frame", frame);
              if(PyErr_Occurred())
                PyErr_Print();
            }
          }
        PUnblock(G);
      }
  return result;
#endif
}

int WizardDoSpecial(PyMOLGlobals * G, int k, int x, int y, int mod)
{
#ifdef _PYMOL_NOPY
  return 0;
#else
  register CWizard *I = G->Wizard;
  int result = false;

  if(I->EventMask & cWizEventSpecial)
    if(I->Stack >= 0)
      if(I->Wiz[I->Stack]) {
        OrthoLineType buffer;
        sprintf(buffer, "cmd.get_wizard().do_special(%d,%d,%d,%d)", k, x, y, mod);
        PLog(G, buffer, cPLog_pym);
        PBlock(G);
        if(I->Stack >= 0)
          if(I->Wiz[I->Stack]) {
            if(PyObject_HasAttrString(I->Wiz[I->Stack], "do_special")) {
              result = PTruthCallStr4i(I->Wiz[I->Stack], "do_special", k, x, y, mod);
              if(PyErr_Occurred())
                PyErr_Print();
            }
          }
        PUnblock(G);
      }
  return result;
#endif
}


/*========================================================================*/
static int WizardClick(Block * block, int button, int x, int y, int mod)
{
#ifdef _PYMOL_NOPY
  return 0;
#else
  PyMOLGlobals *G = block->G;
  register CWizard *I = G->Wizard;
  int a;
  PyObject *menuList = NULL;
  int LineHeight = SettingGetGlobal_i(G, cSetting_internal_gui_control_size);

  a = ((I->Block->rect.top - (y + cWizardClickOffset)) - cWizardTopMargin) / LineHeight;
  if((a >= 0) && ((ov_size) a < I->NLine)) {
    switch (I->Line[a].type) {
    case cWizTypeButton:
      OrthoGrab(G, I->Block);
      I->Pressed = (int) a;
      OrthoDirty(G);
      break;
    case cWizTypePopUp:
      PBlock(G);
      if(I->Stack >= 0)
        if(I->Wiz[I->Stack]) {
          if(PyObject_HasAttrString(I->Wiz[I->Stack], "get_menu")) {
            menuList =
              PyObject_CallMethod(I->Wiz[I->Stack], "get_menu", "s", I->Line[a].code);
            if(PyErr_Occurred())
              PyErr_Print();
          }
        }

      if(PyErr_Occurred())
        PyErr_Print();
      if(menuList && (menuList != Py_None)) {
        int my = I->Block->rect.top - (cWizardTopMargin + a * LineHeight) - 2;

        PopUpNew(G, x, my, x, y, false, menuList, NULL);
      }
      Py_XDECREF(menuList);
      PUnblock(G);
      break;
    }
  }
  return (1);
#endif
}


/*========================================================================*/
static int WizardDrag(Block * block, int x, int y, int mod)
{
#ifdef _PYMOL_NOPY
  return 0;
#else

  PyMOLGlobals *G = block->G;

  register CWizard *I = G->Wizard;
  int LineHeight = SettingGetGlobal_i(G, cSetting_internal_gui_control_size);

  int a;
  a = ((I->Block->rect.top - (y + cWizardClickOffset)) - cWizardTopMargin) / LineHeight;

  if((x < I->Block->rect.left) || (x > I->Block->rect.right))
    a = -1;

  if(I->Pressed != a) {
    I->Pressed = -1;
    OrthoDirty(G);
  }
  if((a >= 0) && ((ov_size) a < I->NLine)) {

    switch (I->Line[a].type) {
    case cWizTypeButton:
      if(I->Pressed != a) {
        I->Pressed = a;
        OrthoDirty(G);
      }
      break;
    }
  }
  return (1);
#endif
}


/*========================================================================*/
static int WizardRelease(Block * block, int button, int x, int y, int mod)
{
  PyMOLGlobals *G = block->G;

  register CWizard *I = G->Wizard;
  int LineHeight = SettingGetGlobal_i(G, cSetting_internal_gui_control_size);

  int a;
  a = ((I->Block->rect.top - (y + cWizardClickOffset)) - cWizardTopMargin) / LineHeight;

  if(I->Pressed)
    I->Pressed = -1;
  OrthoDirty(G);

  OrthoUngrab(G);

  if((a >= 0) && ((ov_size) a < I->NLine)) {
    switch (I->Line[a].type) {
    case cWizTypeButton:
      if(I->Stack >= 0)
        if(I->Wiz[I->Stack]) {
          PLog(G, I->Line[a].code, cPLog_pym);
          PParse(G, I->Line[a].code);
          PFlush(G);
        }
      break;
    }
  }
  I->Pressed = -1;
  return (1);
}

static void draw_button(int x2, int y2, int w, int h, float *light, float *dark,
                        float *inside)
{
  glColor3fv(light);
  glBegin(GL_POLYGON);
  glVertex2i(x2, y2);
  glVertex2i(x2, y2 + h);
  glVertex2i(x2 + w, y2 + h);
  glVertex2i(x2 + w, y2);
  glEnd();

  glColor3fv(dark);
  glBegin(GL_POLYGON);
  glVertex2i(x2 + 1, y2);
  glVertex2i(x2 + 1, y2 + h - 1);
  glVertex2i(x2 + w, y2 + h - 1);
  glVertex2i(x2 + w, y2);
  glEnd();

  if(inside) {
    glColor3fv(inside);
    glBegin(GL_POLYGON);
    glVertex2i(x2 + 1, y2 + 1);
    glVertex2i(x2 + 1, y2 + h - 1);
    glVertex2i(x2 + w - 1, y2 + h - 1);
    glVertex2i(x2 + w - 1, y2 + 1);
    glEnd();
  } else {                      /* rainbow */
    glBegin(GL_POLYGON);
    glColor3f(1.0F, 0.1F, 0.1F);
    glVertex2i(x2 + 1, y2 + 1);
    glColor3f(0.1F, 1.0F, 0.1F);
    glVertex2i(x2 + 1, y2 + h - 1);
    glColor3f(1.0F, 1.0F, 0.1F);
    glVertex2i(x2 + w - 1, y2 + h - 1);
    glColor3f(0.1F, 0.1F, 1.0F);
    glVertex2i(x2 + w - 1, y2 + 1);
    glEnd();
  }

}

static void draw_text(PyMOLGlobals * G, char *c, int xx, int yy, float *color)
{
  TextSetColor(G, color);
  while(*c) {
    if(*c == '\\')
      if(*(c + 1))
        if(*(c + 2))
          if(*(c + 3)) {
            if(*(c + 1) == '-') {
              TextSetColor(G, color);
              c += 4;
            } else {
              TextSetColor3f(G, (*(c + 1) - '0') / 9.0F, (*(c + 2) - '0') / 9.0F,
                             (*(c + 3) - '0') / 9.0F);
              c += 4;
            }
          }
    TextSetPos2i(G, xx, yy);
    TextDrawChar(G, *(c++));
    xx = xx + 8;
  }
}


/*========================================================================*/
static void WizardDraw(Block * block)
{
  PyMOLGlobals *G = block->G;

  register CWizard *I = G->Wizard;
  int x, y;
  int a;

  float buttonTextColor[3] = { 1.0, 1.0, 1.0 };
  float buttonActiveColor[3] = { 0.8F, 0.8F, 0.8F };

  float dimColor[3] = { 0.45F, 0.45F, 0.45F };

  float dimLightEdge[3] = { 0.6F, 0.6F, 0.6F };
  float dimDarkEdge[3] = { 0.25F, 0.25F, 0.25F };

  float menuBGColor[3] = { 0.5F, 0.5F, 1.0 };
  float menuLightEdge[3] = { 0.7F, 0.7F, 0.9F };
  float menuDarkEdge[3] = { 0.3F, 0.3F, 0.5F };

  float black_color[3] = { 0.0F, 0.0F, 0.0F };
  float menuColor[3] = { 0.0, 0.0, 0.0 };
  int LineHeight = SettingGetGlobal_i(G, cSetting_internal_gui_control_size);
  int text_lift = (LineHeight / 2) - 5;
  float *text_color, *text_color2 = I->Block->TextColor;

  text_color = menuColor;

  if(G->HaveGUI && G->ValidContext && ((block->rect.right - block->rect.left) > 6)) {

    if(SettingGetGlobal_b(G, cSetting_internal_gui_mode) == 0) {
      glColor3fv(I->Block->BackColor);
      BlockFill(I->Block);
      BlockDrawLeftEdge(I->Block);
    } else {
      BlockDrawLeftEdge(I->Block);
      glColor3f(0.5, 0.5, 0.5);
      BlockDrawTopEdge(I->Block);
      text_color2 = OrthoGetOverlayColor(G);
    }

    glColor3fv(I->Block->TextColor);

    x = I->Block->rect.left + cWizardLeftMargin;
    y = (I->Block->rect.top - LineHeight) - cWizardTopMargin;

    for(a = 0; (ov_size) a < I->NLine; a++) {
      if(I->Pressed == a) {
        draw_button(I->Block->rect.left + 1, y,
                    (I->Block->rect.right - I->Block->rect.left) - 1,
                    LineHeight - 1, dimLightEdge, dimDarkEdge, buttonActiveColor);
        /*        glColor3f(0.0,0.0,0.0); */
        text_color = black_color;
      } else {
        switch (I->Line[a].type) {
        case cWizTypeText:
          text_color = text_color2;
          glColor3fv(text_color2);
          break;
        case cWizTypeButton:
          draw_button(I->Block->rect.left + 1, y,
                      (I->Block->rect.right - I->Block->rect.left) - 1,
                      LineHeight - 1, dimLightEdge, dimDarkEdge, dimColor);

          /*          glColor3fv(buttonTextColor); */
          text_color = buttonTextColor;
          break;
        case cWizTypePopUp:
          draw_button(I->Block->rect.left + 1, y,
                      (I->Block->rect.right - I->Block->rect.left) - 1,
                      LineHeight - 1, menuLightEdge, menuDarkEdge, menuBGColor);
          /* glColor3fv(menuColor); */
          text_color = menuColor;
          break;
        default:
          break;
        }
      }
      draw_text(G, I->Line[a].text, x + 1, y + text_lift, text_color);
      /*GrapDrawStr(I->Line[a].text,x+1,y+text_lift); */
      y -= LineHeight;
    }
  }
}


/*========================================================================*/
PyObject *WizardGet(PyMOLGlobals * G)
{
  register CWizard *I = G->Wizard;
  if(!I->Wiz)
    return (NULL);
  if(I->Stack < 0)
    return (NULL);
  return (I->Wiz[I->Stack]);
}


/*========================================================================*/
PyObject *WizardGetStack(PyMOLGlobals * G)
{
#ifdef _PYMOL_NOPY
  return NULL;
#else
  register CWizard *I = G->Wizard;
  PyObject *result;

  result = PyList_New(I->Stack - (-1));
  if(I->Wiz) {
    ov_diff a;
    for(a = I->Stack; a >= 0; a--) {
      Py_INCREF(I->Wiz[a]);
      PyList_SetItem(result, a, I->Wiz[a]);     /* steals ref */
    }
  }
  return (result);
#endif
}


/*========================================================================*/
int WizardSetStack(PyMOLGlobals * G, PyObject * list)
{
#ifdef _PYMOL_NOPY
  return 0;
#else

  register CWizard *I = G->Wizard;
  int ok = true;

  if(I->Wiz) {
    WizardPurgeStack(G);
    if(ok)
      ok = (list != NULL);
    if(ok)
      ok = PyList_Check(list);
    if(ok) {
      I->Stack = PyList_Size(list) - 1;
      if(I->Stack >= 0) {
        ov_diff a;
        VLACheck(I->Wiz, PyObject *, I->Stack);
        for(a = I->Stack; a >= 0; a--) {
          I->Wiz[a] = PyList_GetItem(list, a);
          Py_INCREF(I->Wiz[a]);
        }
      }
    }
    if(ok)
      WizardRefresh(G);
    if(ok)
      OrthoDirty(G);
  }
  return (ok);
#endif
}


/*========================================================================*/
int WizardInit(PyMOLGlobals * G)
{
  register CWizard *I = NULL;
  if((I = (G->Wizard = Calloc(CWizard, 1)))) {

    I->Block = OrthoNewBlock(G, NULL);
    I->Block->fClick = WizardClick;
    I->Block->fDrag = WizardDrag;
    I->Block->fDraw = WizardDraw;
    I->Block->fReshape = BlockReshape;
    I->Block->fRelease = WizardRelease;
    I->Block->active = true;

    I->Block->TextColor[0] = 0.2F;
    I->Block->TextColor[1] = 1.0F;
    I->Block->TextColor[2] = 0.2F;

    I->LastUpdatedState = -1;
    I->LastUpdatedFrame = -1;

    OrthoAttach(G, I->Block, cOrthoTool);

    I->Line = VLAlloc(WizardLine, 1);
    I->NLine = 0;
    I->Pressed = -1;
    I->EventMask = 0;
    I->Stack = -1;
    I->Wiz = VLAlloc(PyObject *, 10);
    return 1;
  } else
    return 0;
}


/*========================================================================*/
void WizardFree(PyMOLGlobals * G)
{
  register CWizard *I = G->Wizard;
  WizardPurgeStack(G);
  OrthoFreeBlock(G, I->Block);
  VLAFreeP(I->Line);
  VLAFreeP(I->Wiz);
  FreeP(G->Wizard);
}

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