MagickExport void XTextViewWidget(Display *display,
  const XResourceInfo *resource_info,XWindows *windows,
  const MagickBooleanType mono,const char *title,const char **textlist)
{
#define DismissButtonText  "Dismiss"

  char
    primary_selection[MaxTextExtent];

  int
    i;

  static MagickStatusType
    mask = (MagickStatusType) (CWWidth | CWHeight | CWX | CWY);

  Status
    status;

  unsigned int
    height,
    lines,
    text_width,
    visible_lines,
    width;

  size_t
    delay,
    state;

  XEvent
    event;

  XFontStruct
    *font_info,
    *text_info;

  XTextProperty
    window_name;

  XWidgetInfo
    dismiss_info,
    expose_info,
    list_info,
    north_info,
    scroll_info,
    selection_info,
    slider_info,
    south_info;

  XWindowChanges
    window_changes;

  /*
    Convert text string to a text list.
  */
  assert(display != (Display *) NULL);
  assert(resource_info != (XResourceInfo *) NULL);
  assert(windows != (XWindows *) NULL);
  assert(title != (const char *) NULL);
  assert(textlist != (const char **) NULL);
  (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",title);
  XSetCursorState(display,windows,MagickTrue);
  XCheckRefreshWindows(display,windows);
  if (textlist == (const char **) NULL)
    {
      XNoticeWidget(display,windows,"No text to view:",(char *) NULL);
      return;
    }
  /*
    Determine Text View widget attributes.
  */
  font_info=windows->widget.font_info;
  text_info=(XFontStruct *) NULL;
  if (mono != MagickFalse)
    text_info=XBestFont(display,resource_info,MagickTrue);
  if (text_info == (XFontStruct *) NULL)
    text_info=windows->widget.font_info;
  text_width=0;
  for (i=0; textlist[i] != (char *) NULL; i++)
    if (WidgetTextWidth(text_info,(char *) textlist[i]) > text_width)
      text_width=(unsigned int) XTextWidth(text_info,(char *) textlist[i],
        MagickMin(Extent(textlist[i]),160));
  lines=(unsigned int) i;
  width=WidgetTextWidth(font_info,DismissButtonText);
  width+=QuantumMargin;
  height=(unsigned int) (text_info->ascent+text_info->descent);
  /*
    Position Text View widget.
  */
  windows->widget.width=(unsigned int) (MagickMin((int) text_width,
    (int) MaxTextWidth)+5*QuantumMargin);
  windows->widget.min_width=(unsigned int) (MinTextWidth+4*QuantumMargin);
  if (windows->widget.width < windows->widget.min_width)
    windows->widget.width=windows->widget.min_width;
  windows->widget.height=(unsigned int) (MagickMin(MagickMax((int) lines,3),32)*
    height+((13*height) >> 1)+((9*QuantumMargin) >> 1));
  windows->widget.min_height=(unsigned int) (3*height+((13*height) >> 1)+((9*
    QuantumMargin) >> 1));
  if (windows->widget.height < windows->widget.min_height)
    windows->widget.height=windows->widget.min_height;
  XConstrainWindowPosition(display,&windows->widget);
  /*
    Map Text View widget.
  */
  (void) CopyMagickString(windows->widget.name,title,MaxTextExtent);
  status=XStringListToTextProperty(&windows->widget.name,1,&window_name);
  if (status != False)
    {
      XSetWMName(display,windows->widget.id,&window_name);
      XSetWMIconName(display,windows->widget.id,&window_name);
      (void) XFree((void *) window_name.value);
    }
  window_changes.width=(int) windows->widget.width;
  window_changes.height=(int) windows->widget.height;
  window_changes.x=windows->widget.x;
  window_changes.y=windows->widget.y;
  (void) XReconfigureWMWindow(display,windows->widget.id,
    windows->widget.screen,(unsigned int) mask,&window_changes);
  (void) XMapRaised(display,windows->widget.id);
  windows->widget.mapped=MagickFalse;
  /*
    Respond to X events.
  */
  XGetWidgetInfo((char *) NULL,&slider_info);
  XGetWidgetInfo((char *) NULL,&north_info);
  XGetWidgetInfo((char *) NULL,&south_info);
  XGetWidgetInfo((char *) NULL,&expose_info);
  XGetWidgetInfo((char *) NULL,&selection_info);
  visible_lines=0;
  delay=SuspendTime << 2;
  height=(unsigned int) (font_info->ascent+font_info->descent);
  state=UpdateConfigurationState;
  do
  {
    if (state & UpdateConfigurationState)
      {
        int
          id;

        /*
          Initialize button information.
        */
        XGetWidgetInfo(DismissButtonText,&dismiss_info);
        dismiss_info.width=width;
        dismiss_info.height=(unsigned int) ((3*height) >> 1);
        dismiss_info.x=(int) windows->widget.width-dismiss_info.width-
          QuantumMargin-2;
        dismiss_info.y=(int) windows->widget.height-dismiss_info.height-
          QuantumMargin;
        /*
          Initialize scroll information.
        */
        XGetWidgetInfo((char *) NULL,&scroll_info);
        scroll_info.bevel_width--;
        scroll_info.width=height;
        scroll_info.height=(unsigned int) (dismiss_info.y-((5*QuantumMargin) >>
          1));
        scroll_info.x=(int) windows->widget.width-QuantumMargin-
          scroll_info.width;
        scroll_info.y=(3*QuantumMargin) >> 1;
        scroll_info.raised=MagickFalse;
        scroll_info.trough=MagickTrue;
        north_info=scroll_info;
        north_info.raised=MagickTrue;
        north_info.width-=(north_info.bevel_width << 1);
        north_info.height=north_info.width-1;
        north_info.x+=north_info.bevel_width;
        north_info.y+=north_info.bevel_width;
        south_info=north_info;
        south_info.y=scroll_info.y+scroll_info.height-scroll_info.bevel_width-
          south_info.height;
        id=slider_info.id;
        slider_info=north_info;
        slider_info.id=id;
        slider_info.width-=2;
        slider_info.min_y=north_info.y+north_info.height+north_info.bevel_width+
          slider_info.bevel_width+2;
        slider_info.height=scroll_info.height-((slider_info.min_y-
          scroll_info.y+1) << 1)+4;
        visible_lines=(unsigned int) (scroll_info.height*PerceptibleReciprocal(
          (double) text_info->ascent+text_info->descent+((text_info->ascent+
          text_info->descent) >> 3)));
        if (lines > visible_lines)
          slider_info.height=(unsigned int) (visible_lines*slider_info.height)/
            lines;
        slider_info.max_y=south_info.y-south_info.bevel_width-
          slider_info.bevel_width-2;
        slider_info.x=scroll_info.x+slider_info.bevel_width+1;
        slider_info.y=slider_info.min_y;
        expose_info=scroll_info;
        expose_info.y=slider_info.y;
        /*
          Initialize list information.
        */
        XGetWidgetInfo((char *) NULL,&list_info);
        list_info.raised=MagickFalse;
        list_info.bevel_width--;
        list_info.width=(unsigned int) scroll_info.x-((3*QuantumMargin) >> 1);
        list_info.height=scroll_info.height;
        list_info.x=QuantumMargin;
        list_info.y=scroll_info.y;
        /*
          Initialize selection information.
        */
        XGetWidgetInfo((char *) NULL,&selection_info);
        selection_info.center=MagickFalse;
        selection_info.width=list_info.width;
        selection_info.height=(unsigned int)
          (9*(text_info->ascent+text_info->descent)) >> 3;
        selection_info.x=list_info.x;
        state&=(~UpdateConfigurationState);
      }
    if (state & RedrawWidgetState)
      {
        /*
          Redraw Text View window.
        */
        XDrawBeveledMatte(display,&windows->widget,&list_info);
        XDrawBeveledMatte(display,&windows->widget,&scroll_info);
        XDrawTriangleNorth(display,&windows->widget,&north_info);
        XDrawBeveledButton(display,&windows->widget,&slider_info);
        XDrawTriangleSouth(display,&windows->widget,&south_info);
        XDrawBeveledButton(display,&windows->widget,&dismiss_info);
        XHighlightWidget(display,&windows->widget,BorderOffset,BorderOffset);
        selection_info.id=(~0);
        state|=RedrawListState;
        state&=(~RedrawWidgetState);
      }
    if (state & RedrawListState)
      {
        /*
          Determine slider id and position.
        */
        if (slider_info.id >= (int) (lines-visible_lines))
          slider_info.id=(int) lines-visible_lines;
        if ((slider_info.id < 0) || (lines <= visible_lines))
          slider_info.id=0;
        slider_info.y=slider_info.min_y;
        if (lines != 0)
          slider_info.y+=
            slider_info.id*(slider_info.max_y-slider_info.min_y+1)/lines;
        if (slider_info.id != selection_info.id)
          {
            /*
              Redraw scroll bar and text.
            */
            windows->widget.font_info=text_info;
            (void) XSetFont(display,windows->widget.annotate_context,
              text_info->fid);
            (void) XSetFont(display,windows->widget.highlight_context,
              text_info->fid);
            selection_info.id=slider_info.id;
            selection_info.y=list_info.y+(height >> 3)+2;
            for (i=0; i < (int) visible_lines; i++)
            {
              selection_info.raised=
                (slider_info.id+i) != list_info.id ? MagickTrue : MagickFalse;
              selection_info.text=(char *) NULL;
              if ((slider_info.id+i) < (int) lines)
                selection_info.text=(char *) textlist[slider_info.id+i];
              XDrawWidgetText(display,&windows->widget,&selection_info);
              selection_info.y+=(int) selection_info.height;
            }
            windows->widget.font_info=font_info;
            (void) XSetFont(display,windows->widget.annotate_context,
              font_info->fid);
            (void) XSetFont(display,windows->widget.highlight_context,
              font_info->fid);
            /*
              Update slider.
            */
            if (slider_info.y > expose_info.y)
              {
                expose_info.height=(unsigned int) slider_info.y-expose_info.y;
                expose_info.y=slider_info.y-expose_info.height-
                  slider_info.bevel_width-1;
              }
            else
              {
                expose_info.height=(unsigned int) expose_info.y-slider_info.y;
                expose_info.y=slider_info.y+slider_info.height+
                  slider_info.bevel_width+1;
              }
            XDrawTriangleNorth(display,&windows->widget,&north_info);
            XDrawMatte(display,&windows->widget,&expose_info);
            XDrawBeveledButton(display,&windows->widget,&slider_info);
            XDrawTriangleSouth(display,&windows->widget,&south_info);
            expose_info.y=slider_info.y;
          }
        state&=(~RedrawListState);
      }
    /*
      Wait for next event.
    */
    if (north_info.raised && south_info.raised)
      (void) XIfEvent(display,&event,XScreenEvent,(char *) windows);
    else
      {
        /*
          Brief delay before advancing scroll bar.
        */
        XDelay(display,delay);
        delay=SuspendTime;
        (void) XCheckIfEvent(display,&event,XScreenEvent,(char *) windows);
        if (north_info.raised == MagickFalse)
          if (slider_info.id > 0)
            {
              /*
                Move slider up.
              */
              slider_info.id--;
              state|=RedrawListState;
            }
        if (south_info.raised == MagickFalse)
          if (slider_info.id < (int) lines)
            {
              /*
                Move slider down.
              */
              slider_info.id++;
              state|=RedrawListState;
            }
        if (event.type != ButtonRelease)
          continue;
      }
    switch (event.type)
    {
      case ButtonPress:
      {
        if (MatteIsActive(slider_info,event.xbutton))
          {
            /*
              Track slider.
            */
            slider_info.active=MagickTrue;
            break;
          }
        if (MatteIsActive(north_info,event.xbutton))
          if (slider_info.id > 0)
            {
              /*
                Move slider up.
              */
              north_info.raised=MagickFalse;
              slider_info.id--;
              state|=RedrawListState;
              break;
            }
        if (MatteIsActive(south_info,event.xbutton))
          if (slider_info.id < (int) lines)
            {
              /*
                Move slider down.
              */
              south_info.raised=MagickFalse;
              slider_info.id++;
              state|=RedrawListState;
              break;
            }
        if (MatteIsActive(scroll_info,event.xbutton))
          {
            /*
              Move slider.
            */
            if (event.xbutton.y < slider_info.y)
              slider_info.id-=(visible_lines-1);
            else
              slider_info.id+=(visible_lines-1);
            state|=RedrawListState;
            break;
          }
        if (MatteIsActive(dismiss_info,event.xbutton))
          {
            /*
              User pressed Dismiss button.
            */
            dismiss_info.raised=MagickFalse;
            XDrawBeveledButton(display,&windows->widget,&dismiss_info);
            break;
          }
        if (MatteIsActive(list_info,event.xbutton))
          {
            int
              id;

            static Time
              click_time;

            /*
              User pressed list matte.
            */
            id=slider_info.id+(event.xbutton.y-(list_info.y+(height >> 1))+1)/
              selection_info.height;
            if (id >= (int) lines)
              break;
            if (id != list_info.id)
              {
                list_info.id=id;
                click_time=event.xbutton.time;
                break;
              }
            list_info.id=id;
            if (event.xbutton.time >= (click_time+DoubleClick))
              {
                click_time=event.xbutton.time;
                break;
              }
            click_time=event.xbutton.time;
            /*
              Become the XA_PRIMARY selection owner.
            */
            (void) CopyMagickString(primary_selection,textlist[list_info.id],
              MaxTextExtent);
            (void) XSetSelectionOwner(display,XA_PRIMARY,windows->widget.id,
              event.xbutton.time);
            if (XGetSelectionOwner(display,XA_PRIMARY) != windows->widget.id)
              break;
            selection_info.id=(~0);
            list_info.id=id;
            state|=RedrawListState;
            break;
          }
        break;
      }
      case ButtonRelease:
      {
        if (windows->widget.mapped == MagickFalse)
          break;
        if (north_info.raised == MagickFalse)
          {
            /*
              User released up button.
            */
            delay=SuspendTime << 2;
            north_info.raised=MagickTrue;
            XDrawTriangleNorth(display,&windows->widget,&north_info);
          }
        if (south_info.raised == MagickFalse)
          {
            /*
              User released down button.
            */
            delay=SuspendTime << 2;
            south_info.raised=MagickTrue;
            XDrawTriangleSouth(display,&windows->widget,&south_info);
          }
        if (slider_info.active)
          {
            /*
              Stop tracking slider.
            */
            slider_info.active=MagickFalse;
            break;
          }
        if (dismiss_info.raised == MagickFalse)
          {
            if (event.xbutton.window == windows->widget.id)
              if (MatteIsActive(dismiss_info,event.xbutton))
                state|=ExitState;
            dismiss_info.raised=MagickTrue;
            XDrawBeveledButton(display,&windows->widget,&dismiss_info);
          }
        break;
      }
      case ClientMessage:
      {
        /*
          If client window delete message, exit.
        */
        if (event.xclient.message_type != windows->wm_protocols)
          break;
        if (*event.xclient.data.l == (int) windows->wm_take_focus)
          {
            (void) XSetInputFocus(display,event.xclient.window,RevertToParent,
              (Time) event.xclient.data.l[1]);
            break;
          }
        if (*event.xclient.data.l != (int) windows->wm_delete_window)
          break;
        if (event.xclient.window == windows->widget.id)
          {
            state|=ExitState;
            break;
          }
        break;
      }
      case ConfigureNotify:
      {
        /*
          Update widget configuration.
        */
        if (event.xconfigure.window != windows->widget.id)
          break;
        if ((event.xconfigure.width == (int) windows->widget.width) &&
            (event.xconfigure.height == (int) windows->widget.height))
          break;
        windows->widget.width=(unsigned int)
          MagickMax(event.xconfigure.width,(int) windows->widget.min_width);
        windows->widget.height=(unsigned int)
          MagickMax(event.xconfigure.height,(int) windows->widget.min_height);
        state|=UpdateConfigurationState;
        break;
      }
      case EnterNotify:
      {
        if (event.xcrossing.window != windows->widget.id)
          break;
        state&=(~InactiveWidgetState);
        break;
      }
      case Expose:
      {
        if (event.xexpose.window != windows->widget.id)
          break;
        if (event.xexpose.count != 0)
          break;
        state|=RedrawWidgetState;
        break;
      }
      case KeyPress:
      {
        static char
          command[MaxTextExtent];

        static int
          length;

        static KeySym
          key_symbol;

        /*
          Respond to a user key press.
        */
        if (event.xkey.window != windows->widget.id)
          break;
        length=XLookupString((XKeyEvent *) &event.xkey,command,
          (int) sizeof(command),&key_symbol,(XComposeStatus *) NULL);
        *(command+length)='\0';
        if ((key_symbol == XK_Return) || (key_symbol == XK_KP_Enter))
          {
            dismiss_info.raised=MagickFalse;
            XDrawBeveledButton(display,&windows->widget,&dismiss_info);
            state|=ExitState;
            break;
          }
        if (AreaIsActive(scroll_info,event.xkey))
          {
            /*
              Move slider.
            */
            switch ((int) key_symbol)
            {
              case XK_Home:
              case XK_KP_Home:
              {
                slider_info.id=0;
                break;
              }
              case XK_Up:
              case XK_KP_Up:
              {
                slider_info.id--;
                break;
              }
              case XK_Down:
              case XK_KP_Down:
              {
                slider_info.id++;
                break;
              }
              case XK_Prior:
              case XK_KP_Prior:
              {
                slider_info.id-=visible_lines;
                break;
              }
              case XK_Next:
              case XK_KP_Next:
              {
                slider_info.id+=visible_lines;
                break;
              }
              case XK_End:
              case XK_KP_End:
              {
                slider_info.id=(int) lines;
                break;
              }
            }
            state|=RedrawListState;
            break;
          }
        break;
      }
      case KeyRelease:
        break;
      case LeaveNotify:
      {
        if (event.xcrossing.window != windows->widget.id)
          break;
        state|=InactiveWidgetState;
        break;
      }
      case MapNotify:
      {
        mask&=(~CWX);
        mask&=(~CWY);
        break;
      }
      case MotionNotify:
      {
        /*
          Discard pending button motion events.
        */
        while (XCheckMaskEvent(display,ButtonMotionMask,&event)) ;
        if (slider_info.active)
          {
            /*
              Move slider matte.
            */
            slider_info.y=event.xmotion.y-
              ((slider_info.height+slider_info.bevel_width) >> 1)+1;
            if (slider_info.y < slider_info.min_y)
              slider_info.y=slider_info.min_y;
            if (slider_info.y > slider_info.max_y)
              slider_info.y=slider_info.max_y;
            slider_info.id=0;
            if (slider_info.y != slider_info.min_y)
              slider_info.id=(int) (lines*(slider_info.y-slider_info.min_y+1))/
                (slider_info.max_y-slider_info.min_y+1);
            state|=RedrawListState;
            break;
          }
        if (state & InactiveWidgetState)
          break;
        if (dismiss_info.raised == MatteIsActive(dismiss_info,event.xmotion))
          {
            /*
              Dismiss button status changed.
            */
            dismiss_info.raised=
              dismiss_info.raised == MagickFalse ? MagickTrue : MagickFalse;
            XDrawBeveledButton(display,&windows->widget,&dismiss_info);
            break;
          }
        break;
      }
      case SelectionClear:
      {
        list_info.id=(~0);
        selection_info.id=(~0);
        state|=RedrawListState;
        break;
      }
      case SelectionRequest:
      {
        XSelectionEvent
          notify;

        XSelectionRequestEvent
          *request;

        if (list_info.id == (~0))
          break;
        /*
          Set primary selection.
        */
        request=(&(event.xselectionrequest));
        (void) XChangeProperty(request->display,request->requestor,
          request->property,request->target,8,PropModeReplace,
          (unsigned char *) primary_selection,Extent(primary_selection));
        notify.type=SelectionNotify;
        notify.send_event=MagickTrue;
        notify.display=request->display;
        notify.requestor=request->requestor;
        notify.selection=request->selection;
        notify.target=request->target;
        notify.time=request->time;
        if (request->property == None)
          notify.property=request->target;
        else
          notify.property=request->property;
        (void) XSendEvent(request->display,request->requestor,False,NoEventMask,
          (XEvent *) &notify);
      }
      default:
        break;
    }
  } while ((state & ExitState) == 0);
  if (text_info != windows->widget.font_info)
    (void) XFreeFont(display,text_info);
  XSetCursorState(display,windows,MagickFalse);
  (void) XWithdrawWindow(display,windows->widget.id,windows->widget.screen);
  XCheckRefreshWindows(display,windows);
}


MagickExport void XListBrowserWidget(Display *display,XWindows *windows,
  XWindowInfo *window_info,const char *const *list,const char *action,
  const char *query,char *reply)
{
#define CancelButtonText  "Cancel"

  char
    primary_selection[MaxTextExtent];

  int
    x;

  int
    i;

  static MagickStatusType
    mask = (MagickStatusType) (CWWidth | CWHeight | CWX | CWY);

  Status
    status;

  unsigned int
    entries,
    height,
    text_width,
    visible_entries,
    width;

  size_t
    delay,
    state;

  XEvent
    event;

  XFontStruct
    *font_info;

  XTextProperty
    window_name;

  XWidgetInfo
    action_info,
    cancel_info,
    expose_info,
    list_info,
    north_info,
    reply_info,
    scroll_info,
    selection_info,
    slider_info,
    south_info,
    text_info;

  XWindowChanges
    window_changes;

  /*
    Count the number of entries in the list.
  */
  assert(display != (Display *) NULL);
  assert(windows != (XWindows *) NULL);
  assert(window_info != (XWindowInfo *) NULL);
  assert(list != (const char **) NULL);
  assert(action != (char *) NULL);
  assert(query != (char *) NULL);
  assert(reply != (char *) NULL);
  (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",action);
  XSetCursorState(display,windows,MagickTrue);
  XCheckRefreshWindows(display,windows);
  if (list == (const char **) NULL)
    {
      XNoticeWidget(display,windows,"No text to browse:",(char *) NULL);
      return;
    }
  for (entries=0; ; entries++)
    if (list[entries] == (char *) NULL)
      break;
  /*
    Determine Font Browser widget attributes.
  */
  font_info=window_info->font_info;
  text_width=WidgetTextWidth(font_info,(char *) query);
  for (i=0; i < (int) entries; i++)
    if (WidgetTextWidth(font_info,(char *) list[i]) > text_width)
      text_width=WidgetTextWidth(font_info,(char *) list[i]);
  width=WidgetTextWidth(font_info,(char *) action);
  if (WidgetTextWidth(font_info,CancelButtonText) > width)
    width=WidgetTextWidth(font_info,CancelButtonText);
  width+=QuantumMargin;
  height=(unsigned int) (font_info->ascent+font_info->descent);
  /*
    Position List Browser widget.
  */
  window_info->width=(unsigned int) MagickMin((int) text_width,(int)
    MaxTextWidth)+((9*QuantumMargin) >> 1);
  window_info->min_width=(unsigned int) (MinTextWidth+4*QuantumMargin);
  if (window_info->width < window_info->min_width)
    window_info->width=window_info->min_width;
  window_info->height=(unsigned int)
    (((81*height) >> 2)+((13*QuantumMargin) >> 1)+4);
  window_info->min_height=(unsigned int)
    (((23*height) >> 1)+((13*QuantumMargin) >> 1)+4);
  if (window_info->height < window_info->min_height)
    window_info->height=window_info->min_height;
  XConstrainWindowPosition(display,window_info);
  /*
    Map List Browser widget.
  */
  (void) CopyMagickString(window_info->name,"Browse",MaxTextExtent);
  status=XStringListToTextProperty(&window_info->name,1,&window_name);
  if (status != False)
    {
      XSetWMName(display,window_info->id,&window_name);
      XSetWMIconName(display,windows->widget.id,&window_name);
      (void) XFree((void *) window_name.value);
    }
  window_changes.width=(int) window_info->width;
  window_changes.height=(int) window_info->height;
  window_changes.x=window_info->x;
  window_changes.y=window_info->y;
  (void) XReconfigureWMWindow(display,window_info->id,window_info->screen,mask,
    &window_changes);
  (void) XMapRaised(display,window_info->id);
  window_info->mapped=MagickFalse;
  /*
    Respond to X events.
  */
  XGetWidgetInfo((char *) NULL,&slider_info);
  XGetWidgetInfo((char *) NULL,&north_info);
  XGetWidgetInfo((char *) NULL,&south_info);
  XGetWidgetInfo((char *) NULL,&expose_info);
  XGetWidgetInfo((char *) NULL,&selection_info);
  visible_entries=0;
  delay=SuspendTime << 2;
  state=UpdateConfigurationState;
  do
  {
    if (state & UpdateConfigurationState)
      {
        int
          id;

        /*
          Initialize button information.
        */
        XGetWidgetInfo(CancelButtonText,&cancel_info);
        cancel_info.width=width;
        cancel_info.height=(unsigned int) ((3*height) >> 1);
        cancel_info.x=(int)
          (window_info->width-cancel_info.width-QuantumMargin-2);
        cancel_info.y=(int)
          (window_info->height-cancel_info.height-QuantumMargin);
        XGetWidgetInfo(action,&action_info);
        action_info.width=width;
        action_info.height=(unsigned int) ((3*height) >> 1);
        action_info.x=cancel_info.x-(cancel_info.width+(QuantumMargin >> 1)+
          (action_info.bevel_width << 1));
        action_info.y=cancel_info.y;
        /*
          Initialize reply information.
        */
        XGetWidgetInfo(reply,&reply_info);
        reply_info.raised=MagickFalse;
        reply_info.bevel_width--;
        reply_info.width=window_info->width-((4*QuantumMargin) >> 1);
        reply_info.height=height << 1;
        reply_info.x=QuantumMargin;
        reply_info.y=action_info.y-reply_info.height-QuantumMargin;
        /*
          Initialize scroll information.
        */
        XGetWidgetInfo((char *) NULL,&scroll_info);
        scroll_info.bevel_width--;
        scroll_info.width=height;
        scroll_info.height=(unsigned int)
          (reply_info.y-((6*QuantumMargin) >> 1)-height);
        scroll_info.x=reply_info.x+(reply_info.width-scroll_info.width);
        scroll_info.y=((5*QuantumMargin) >> 1)+height-reply_info.bevel_width;
        scroll_info.raised=MagickFalse;
        scroll_info.trough=MagickTrue;
        north_info=scroll_info;
        north_info.raised=MagickTrue;
        north_info.width-=(north_info.bevel_width << 1);
        north_info.height=north_info.width-1;
        north_info.x+=north_info.bevel_width;
        north_info.y+=north_info.bevel_width;
        south_info=north_info;
        south_info.y=scroll_info.y+scroll_info.height-scroll_info.bevel_width-
          south_info.height;
        id=slider_info.id;
        slider_info=north_info;
        slider_info.id=id;
        slider_info.width-=2;
        slider_info.min_y=north_info.y+north_info.height+north_info.bevel_width+
          slider_info.bevel_width+2;
        slider_info.height=scroll_info.height-((slider_info.min_y-
          scroll_info.y+1) << 1)+4;
        visible_entries=(unsigned int) (scroll_info.height*
          PerceptibleReciprocal((double) height+(height >> 3)));
        if (entries > visible_entries)
          slider_info.height=(visible_entries*slider_info.height)/entries;
        slider_info.max_y=south_info.y-south_info.bevel_width-
          slider_info.bevel_width-2;
        slider_info.x=scroll_info.x+slider_info.bevel_width+1;
        slider_info.y=slider_info.min_y;
        expose_info=scroll_info;
        expose_info.y=slider_info.y;
        /*
          Initialize list information.
        */
        XGetWidgetInfo((char *) NULL,&list_info);
        list_info.raised=MagickFalse;
        list_info.bevel_width--;
        list_info.width=(unsigned int)
          (scroll_info.x-reply_info.x-(QuantumMargin >> 1));
        list_info.height=scroll_info.height;
        list_info.x=reply_info.x;
        list_info.y=scroll_info.y;
        if (window_info->mapped == MagickFalse)
          for (i=0; i < (int) entries; i++)
            if (LocaleCompare(list[i],reply) == 0)
              {
                list_info.id=i;
                slider_info.id=i-(visible_entries >> 1);
                if (slider_info.id < 0)
                  slider_info.id=0;
              }
        /*
          Initialize text information.
        */
        XGetWidgetInfo(query,&text_info);
        text_info.width=reply_info.width;
        text_info.height=height;
        text_info.x=list_info.x-(QuantumMargin >> 1);
        text_info.y=QuantumMargin;
        /*
          Initialize selection information.
        */
        XGetWidgetInfo((char *) NULL,&selection_info);
        selection_info.center=MagickFalse;
        selection_info.width=list_info.width;
        selection_info.height=(unsigned int) ((9*height) >> 3);
        selection_info.x=list_info.x;
        state&=(~UpdateConfigurationState);
      }
    if (state & RedrawWidgetState)
      {
        /*
          Redraw List Browser window.
        */
        XDrawWidgetText(display,window_info,&text_info);
        XDrawBeveledMatte(display,window_info,&list_info);
        XDrawBeveledMatte(display,window_info,&scroll_info);
        XDrawTriangleNorth(display,window_info,&north_info);
        XDrawBeveledButton(display,window_info,&slider_info);
        XDrawTriangleSouth(display,window_info,&south_info);
        XDrawBeveledMatte(display,window_info,&reply_info);
        XDrawMatteText(display,window_info,&reply_info);
        XDrawBeveledButton(display,window_info,&action_info);
        XDrawBeveledButton(display,window_info,&cancel_info);
        XHighlightWidget(display,window_info,BorderOffset,BorderOffset);
        selection_info.id=(~0);
        state|=RedrawActionState;
        state|=RedrawListState;
        state&=(~RedrawWidgetState);
      }
    if (state & RedrawListState)
      {
        /*
          Determine slider id and position.
        */
        if (slider_info.id >= (int) (entries-visible_entries))
          slider_info.id=(int) (entries-visible_entries);
        if ((slider_info.id < 0) || (entries <= visible_entries))
          slider_info.id=0;
        slider_info.y=slider_info.min_y;
        if (entries > 0)
          slider_info.y+=
            slider_info.id*(slider_info.max_y-slider_info.min_y+1)/entries;
        if (slider_info.id != selection_info.id)
          {
            /*
              Redraw scroll bar and file names.
            */
            selection_info.id=slider_info.id;
            selection_info.y=list_info.y+(height >> 3)+2;
            for (i=0; i < (int) visible_entries; i++)
            {
              selection_info.raised=(slider_info.id+i) != list_info.id ?
                MagickTrue : MagickFalse;
              selection_info.text=(char *) NULL;
              if ((slider_info.id+i) < (int) entries)
                selection_info.text=(char *) list[slider_info.id+i];
              XDrawWidgetText(display,window_info,&selection_info);
              selection_info.y+=(int) selection_info.height;
            }
            /*
              Update slider.
            */
            if (slider_info.y > expose_info.y)
              {
                expose_info.height=(unsigned int) slider_info.y-expose_info.y;
                expose_info.y=slider_info.y-expose_info.height-
                  slider_info.bevel_width-1;
              }
            else
              {
                expose_info.height=(unsigned int) expose_info.y-slider_info.y;
                expose_info.y=slider_info.y+slider_info.height+
                  slider_info.bevel_width+1;
              }
            XDrawTriangleNorth(display,window_info,&north_info);
            XDrawMatte(display,window_info,&expose_info);
            XDrawBeveledButton(display,window_info,&slider_info);
            XDrawTriangleSouth(display,window_info,&south_info);
            expose_info.y=slider_info.y;
          }
        state&=(~RedrawListState);
      }
    /*
      Wait for next event.
    */
    if (north_info.raised && south_info.raised)
      (void) XIfEvent(display,&event,XScreenEvent,(char *) windows);
    else
      {
        /*
          Brief delay before advancing scroll bar.
        */
        XDelay(display,delay);
        delay=SuspendTime;
        (void) XCheckIfEvent(display,&event,XScreenEvent,(char *) windows);
        if (north_info.raised == MagickFalse)
          if (slider_info.id > 0)
            {
              /*
                Move slider up.
              */
              slider_info.id--;
              state|=RedrawListState;
            }
        if (south_info.raised == MagickFalse)
          if (slider_info.id < (int) entries)
            {
              /*
                Move slider down.
              */
              slider_info.id++;
              state|=RedrawListState;
            }
        if (event.type != ButtonRelease)
          continue;
      }
    switch (event.type)
    {
      case ButtonPress:
      {
        if (MatteIsActive(slider_info,event.xbutton))
          {
            /*
              Track slider.
            */
            slider_info.active=MagickTrue;
            break;
          }
        if (MatteIsActive(north_info,event.xbutton))
          if (slider_info.id > 0)
            {
              /*
                Move slider up.
              */
              north_info.raised=MagickFalse;
              slider_info.id--;
              state|=RedrawListState;
              break;
            }
        if (MatteIsActive(south_info,event.xbutton))
          if (slider_info.id < (int) entries)
            {
              /*
                Move slider down.
              */
              south_info.raised=MagickFalse;
              slider_info.id++;
              state|=RedrawListState;
              break;
            }
        if (MatteIsActive(scroll_info,event.xbutton))
          {
            /*
              Move slider.
            */
            if (event.xbutton.y < slider_info.y)
              slider_info.id-=(visible_entries-1);
            else
              slider_info.id+=(visible_entries-1);
            state|=RedrawListState;
            break;
          }
        if (MatteIsActive(list_info,event.xbutton))
          {
            int
              id;

            /*
              User pressed list matte.
            */
            id=slider_info.id+(event.xbutton.y-(list_info.y+(height >> 1))+1)/
              selection_info.height;
            if (id >= (int) entries)
              break;
            (void) CopyMagickString(reply_info.text,list[id],MaxTextExtent);
            reply_info.highlight=MagickFalse;
            reply_info.marker=reply_info.text;
            reply_info.cursor=reply_info.text+Extent(reply_info.text);
            XDrawMatteText(display,window_info,&reply_info);
            selection_info.id=(~0);
            if (id == list_info.id)
              {
                action_info.raised=MagickFalse;
                XDrawBeveledButton(display,window_info,&action_info);
                state|=ExitState;
              }
            list_info.id=id;
            state|=RedrawListState;
            break;
          }
        if (MatteIsActive(action_info,event.xbutton))
          {
            /*
              User pressed action button.
            */
            action_info.raised=MagickFalse;
            XDrawBeveledButton(display,window_info,&action_info);
            break;
          }
        if (MatteIsActive(cancel_info,event.xbutton))
          {
            /*
              User pressed Cancel button.
            */
            cancel_info.raised=MagickFalse;
            XDrawBeveledButton(display,window_info,&cancel_info);
            break;
          }
        if (MatteIsActive(reply_info,event.xbutton) == MagickFalse)
          break;
        if (event.xbutton.button != Button2)
          {
            static Time
              click_time;

            /*
              Move text cursor to position of button press.
            */
            x=event.xbutton.x-reply_info.x-(QuantumMargin >> 2);
            for (i=1; i <= Extent(reply_info.marker); i++)
              if (XTextWidth(font_info,reply_info.marker,i) > x)
                break;
            reply_info.cursor=reply_info.marker+i-1;
            if (event.xbutton.time > (click_time+DoubleClick))
              reply_info.highlight=MagickFalse;
            else
              {
                /*
                  Become the XA_PRIMARY selection owner.
                */
                (void) CopyMagickString(primary_selection,reply_info.text,
                  MaxTextExtent);
                (void) XSetSelectionOwner(display,XA_PRIMARY,window_info->id,
                  event.xbutton.time);
                reply_info.highlight=XGetSelectionOwner(display,XA_PRIMARY) ==
                  window_info->id ? MagickTrue : MagickFalse;
              }
            XDrawMatteText(display,window_info,&reply_info);
            click_time=event.xbutton.time;
            break;
          }
        /*
          Request primary selection.
        */
        (void) XConvertSelection(display,XA_PRIMARY,XA_STRING,XA_STRING,
          window_info->id,event.xbutton.time);
        break;
      }
      case ButtonRelease:
      {
        if (window_info->mapped == MagickFalse)
          break;
        if (north_info.raised == MagickFalse)
          {
            /*
              User released up button.
            */
            delay=SuspendTime << 2;
            north_info.raised=MagickTrue;
            XDrawTriangleNorth(display,window_info,&north_info);
          }
        if (south_info.raised == MagickFalse)
          {
            /*
              User released down button.
            */
            delay=SuspendTime << 2;
            south_info.raised=MagickTrue;
            XDrawTriangleSouth(display,window_info,&south_info);
          }
        if (slider_info.active)
          {
            /*
              Stop tracking slider.
            */
            slider_info.active=MagickFalse;
            break;
          }
        if (action_info.raised == MagickFalse)
          {
            if (event.xbutton.window == window_info->id)
              {
                if (MatteIsActive(action_info,event.xbutton))
                  {
                    if (*reply_info.text == '\0')
                      (void) XBell(display,0);
                    else
                      state|=ExitState;
                  }
              }
            action_info.raised=MagickTrue;
            XDrawBeveledButton(display,window_info,&action_info);
          }
        if (cancel_info.raised == MagickFalse)
          {
            if (event.xbutton.window == window_info->id)
              if (MatteIsActive(cancel_info,event.xbutton))
                {
                  *reply_info.text='\0';
                  state|=ExitState;
                }
            cancel_info.raised=MagickTrue;
            XDrawBeveledButton(display,window_info,&cancel_info);
          }
        if (MatteIsActive(reply_info,event.xbutton) == MagickFalse)
          break;
        break;
      }
      case ClientMessage:
      {
        /*
          If client window delete message, exit.
        */
        if (event.xclient.message_type != windows->wm_protocols)
          break;
        if (*event.xclient.data.l == (int) windows->wm_take_focus)
          {
            (void) XSetInputFocus(display,event.xclient.window,RevertToParent,
              (Time) event.xclient.data.l[1]);
            break;
          }
        if (*event.xclient.data.l != (int) windows->wm_delete_window)
          break;
        if (event.xclient.window == window_info->id)
          {
            *reply_info.text='\0';
            state|=ExitState;
            break;
          }
        break;
      }
      case ConfigureNotify:
      {
        /*
          Update widget configuration.
        */
        if (event.xconfigure.window != window_info->id)
          break;
        if ((event.xconfigure.width == (int) window_info->width) &&
            (event.xconfigure.height == (int) window_info->height))
          break;
        window_info->width=(unsigned int)
          MagickMax(event.xconfigure.width,(int) window_info->min_width);
        window_info->height=(unsigned int)
          MagickMax(event.xconfigure.height,(int) window_info->min_height);
        state|=UpdateConfigurationState;
        break;
      }
      case EnterNotify:
      {
        if (event.xcrossing.window != window_info->id)
          break;
        state&=(~InactiveWidgetState);
        break;
      }
      case Expose:
      {
        if (event.xexpose.window != window_info->id)
          break;
        if (event.xexpose.count != 0)
          break;
        state|=RedrawWidgetState;
        break;
      }
      case KeyPress:
      {
        static char
          command[MaxTextExtent];

        static int
          length;

        static KeySym
          key_symbol;

        /*
          Respond to a user key press.
        */
        if (event.xkey.window != window_info->id)
          break;
        length=XLookupString((XKeyEvent *) &event.xkey,command,
          (int) sizeof(command),&key_symbol,(XComposeStatus *) NULL);
        *(command+length)='\0';
        if (AreaIsActive(scroll_info,event.xkey))
          {
            /*
              Move slider.
            */
            switch ((int) key_symbol)
            {
              case XK_Home:
              case XK_KP_Home:
              {
                slider_info.id=0;
                break;
              }
              case XK_Up:
              case XK_KP_Up:
              {
                slider_info.id--;
                break;
              }
              case XK_Down:
              case XK_KP_Down:
              {
                slider_info.id++;
                break;
              }
              case XK_Prior:
              case XK_KP_Prior:
              {
                slider_info.id-=visible_entries;
                break;
              }
              case XK_Next:
              case XK_KP_Next:
              {
                slider_info.id+=visible_entries;
                break;
              }
              case XK_End:
              case XK_KP_End:
              {
                slider_info.id=(int) entries;
                break;
              }
            }
            state|=RedrawListState;
            break;
          }
        if ((key_symbol == XK_Return) || (key_symbol == XK_KP_Enter))
          {
            /*
              Read new entry.
            */
            if (*reply_info.text == '\0')
              break;
            action_info.raised=MagickFalse;
            XDrawBeveledButton(display,window_info,&action_info);
            state|=ExitState;
            break;
          }
        if (key_symbol == XK_Control_L)
          {
            state|=ControlState;
            break;
          }
        if (state & ControlState)
          switch ((int) key_symbol)
          {
            case XK_u:
            case XK_U:
            {
              /*
                Erase the entire line of text.
              */
              *reply_info.text='\0';
              reply_info.cursor=reply_info.text;
              reply_info.marker=reply_info.text;
              reply_info.highlight=MagickFalse;
              break;
            }
            default:
              break;
          }
        XEditText(display,&reply_info,key_symbol,command,state);
        XDrawMatteText(display,window_info,&reply_info);
        break;
      }
      case KeyRelease:
      {
        static char
          command[MaxTextExtent];

        static KeySym
          key_symbol;

        /*
          Respond to a user key release.
        */
        if (event.xkey.window != window_info->id)
          break;
        (void) XLookupString((XKeyEvent *) &event.xkey,command,
          (int) sizeof(command),&key_symbol,(XComposeStatus *) NULL);
        if (key_symbol == XK_Control_L)
          state&=(~ControlState);
        break;
      }
      case LeaveNotify:
      {
        if (event.xcrossing.window != window_info->id)
          break;
        state|=InactiveWidgetState;
        break;
      }
      case MapNotify:
      {
        mask&=(~CWX);
        mask&=(~CWY);
        break;
      }
      case MotionNotify:
      {
        /*
          Discard pending button motion events.
        */
        while (XCheckMaskEvent(display,ButtonMotionMask,&event)) ;
        if (slider_info.active)
          {
            /*
              Move slider matte.
            */
            slider_info.y=event.xmotion.y-
              ((slider_info.height+slider_info.bevel_width) >> 1)+1;
            if (slider_info.y < slider_info.min_y)
              slider_info.y=slider_info.min_y;
            if (slider_info.y > slider_info.max_y)
              slider_info.y=slider_info.max_y;
            slider_info.id=0;
            if (slider_info.y != slider_info.min_y)
              slider_info.id=(int) ((entries*(slider_info.y-
                slider_info.min_y+1))/(slider_info.max_y-slider_info.min_y+1));
            state|=RedrawListState;
            break;
          }
        if (state & InactiveWidgetState)
          break;
        if (action_info.raised == MatteIsActive(action_info,event.xmotion))
          {
            /*
              Action button status changed.
            */
            action_info.raised=action_info.raised == MagickFalse ?
              MagickTrue : MagickFalse;
            XDrawBeveledButton(display,window_info,&action_info);
            break;
          }
        if (cancel_info.raised == MatteIsActive(cancel_info,event.xmotion))
          {
            /*
              Cancel button status changed.
            */
            cancel_info.raised=cancel_info.raised == MagickFalse ?
              MagickTrue : MagickFalse;
            XDrawBeveledButton(display,window_info,&cancel_info);
            break;
          }
        break;
      }
      case SelectionClear:
      {
        reply_info.highlight=MagickFalse;
        XDrawMatteText(display,window_info,&reply_info);
        break;
      }
      case SelectionNotify:
      {
        Atom
          type;

        int
          format;

        unsigned char
          *data;

        unsigned long
          after,
          length;

        /*
          Obtain response from primary selection.
        */
        if (event.xselection.property == (Atom) None)
          break;
        status=XGetWindowProperty(display,
          event.xselection.requestor,event.xselection.property,0L,2047L,
          MagickTrue,XA_STRING,&type,&format,&length,&after,&data);
        if ((status != Success) || (type != XA_STRING) || (format == 32) ||
            (length == 0))
          break;
        if ((Extent(reply_info.text)+length) >= (MaxTextExtent-1))
          (void) XBell(display,0);
        else
          {
            /*
              Insert primary selection in reply text.
            */
            *(data+length)='\0';
            XEditText(display,&reply_info,(KeySym) XK_Insert,(char *) data,
              state);
            XDrawMatteText(display,window_info,&reply_info);
            state|=RedrawActionState;
          }
        (void) XFree((void *) data);
        break;
      }
      case SelectionRequest:
      {
        XSelectionEvent
          notify;

        XSelectionRequestEvent
          *request;

        if (reply_info.highlight == MagickFalse)
          break;
        /*
          Set primary selection.
        */
        request=(&(event.xselectionrequest));
        (void) XChangeProperty(request->display,request->requestor,
          request->property,request->target,8,PropModeReplace,
          (unsigned char *) primary_selection,Extent(primary_selection));
        notify.type=SelectionNotify;
        notify.send_event=MagickTrue;
        notify.display=request->display;
        notify.requestor=request->requestor;
        notify.selection=request->selection;
        notify.target=request->target;
        notify.time=request->time;
        if (request->property == None)
          notify.property=request->target;
        else
          notify.property=request->property;
        (void) XSendEvent(request->display,request->requestor,False,NoEventMask,
          (XEvent *) &notify);
      }
      default:
        break;
    }
  } while ((state & ExitState) == 0);
  XSetCursorState(display,windows,MagickFalse);
  (void) XWithdrawWindow(display,window_info->id,window_info->screen);
  XCheckRefreshWindows(display,windows);
}

Pull request: https://github.com/ImageMagick/ImageMagick/pull/4963


static inline ssize_t WritePSDOffset(const PSDInfo *psd_info,Image *image,
  const MagickSizeType size,const MagickOffsetType offset)
{
  MagickOffsetType
    current_offset;

  ssize_t
    result;

  current_offset=TellBlob(image);
  (void) SeekBlob(image,offset,SEEK_SET);
  if (psd_info->version == 1)
    result=WriteBlobMSBShort(image,(unsigned short) size);
  else
    result=WriteBlobMSBLong(image,(unsigned int) size);
  (void) SeekBlob(image,current_offset,SEEK_SET);
  return(result);
}


static MagickBooleanType WritePSDImage(const ImageInfo *image_info,
  Image *image)
{
  char
    layer_name[MaxTextExtent];

  const char
    *property;

  const StringInfo
    *icc_profile,
    *info;

  Image
    *base_image,
    *next_image;

  MagickBooleanType
    status;

  MagickOffsetType
    *layer_size_offsets,
    size_offset;

  PSDInfo
    psd_info;

  ssize_t
    i;

  size_t
    layer_count,
    layer_index,
    length,
    name_length,
    num_channels,
    packet_size,
    rounded_size,
    size;

  StringInfo
    *bim_profile;

  /*
    Open image file.
  */
  assert(image_info != (const ImageInfo *) NULL);
  assert(image_info->signature == MagickCoreSignature);
  assert(image != (Image *) NULL);
  assert(image->signature == MagickCoreSignature);
  if (image->debug != MagickFalse)
    (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
  status=OpenBlob(image_info,image,WriteBinaryBlobMode,&image->exception);
  if (status == MagickFalse)
    return(status);
  packet_size=(size_t) (image->depth > 8 ? 6 : 3);
  if (image->matte != MagickFalse)
    packet_size+=image->depth > 8 ? 2 : 1;
  psd_info.version=1;
  if ((LocaleCompare(image_info->magick,"PSB") == 0) ||
      (image->columns > 30000) || (image->rows > 30000))
    psd_info.version=2;
  (void) WriteBlob(image,4,(const unsigned char *) "8BPS");
  (void) WriteBlobMSBShort(image,psd_info.version);  /* version */
  for (i=1; i <= 6; i++)
    (void) WriteBlobByte(image, 0);  /* 6 bytes of reserved */
  /* When the image has a color profile it won't be converted to gray scale */
  if ((GetImageProfile(image,"icc") == (StringInfo *) NULL) &&
      (SetImageGray(image,&image->exception) != MagickFalse))
    num_channels=(image->matte != MagickFalse ? 2UL : 1UL);
  else
    if ((image_info->type != TrueColorType) && (image_info->type !=
         TrueColorMatteType) && (image->storage_class == PseudoClass))
      num_channels=(image->matte != MagickFalse ? 2UL : 1UL);
    else
      {
        if (image->storage_class == PseudoClass)
          (void) SetImageStorageClass(image,DirectClass);
        if (image->colorspace != CMYKColorspace)
          num_channels=(image->matte != MagickFalse ? 4UL : 3UL);
        else
          num_channels=(image->matte != MagickFalse ? 5UL : 4UL);
      }
  (void) WriteBlobMSBShort(image,(unsigned short) num_channels);
  (void) WriteBlobMSBLong(image,(unsigned int) image->rows);
  (void) WriteBlobMSBLong(image,(unsigned int) image->columns);
  if (IsGrayImage(image,&image->exception) != MagickFalse)
    {
      MagickBooleanType
        monochrome;

      /*
        Write depth & mode.
      */
      monochrome=IsMonochromeImage(image,&image->exception) &&
        (image->depth == 1) ? MagickTrue : MagickFalse;
      (void) WriteBlobMSBShort(image,(unsigned short)
        (monochrome != MagickFalse ? 1 : image->depth > 8 ? 16 : 8));
      (void) WriteBlobMSBShort(image,(unsigned short)
        (monochrome != MagickFalse ? BitmapMode : GrayscaleMode));
    }
  else
    {
      (void) WriteBlobMSBShort(image,(unsigned short) (image->storage_class ==
        PseudoClass ? 8 : image->depth > 8 ? 16 : 8));
      if (((image_info->colorspace != UndefinedColorspace) ||
           (image->colorspace != CMYKColorspace)) &&
          (image_info->colorspace != CMYKColorspace))
        {
          if (IssRGBCompatibleColorspace(image->colorspace) == MagickFalse)
            (void) TransformImageColorspace(image,sRGBColorspace);
          (void) WriteBlobMSBShort(image,(unsigned short)
            (image->storage_class == PseudoClass ? IndexedMode : RGBMode));
        }
      else
        {
          if (image->colorspace != CMYKColorspace)
            (void) TransformImageColorspace(image,CMYKColorspace);
          (void) WriteBlobMSBShort(image,CMYKMode);
        }
    }
  if ((IsGrayImage(image,&image->exception) != MagickFalse) ||
      (image->storage_class == DirectClass) || (image->colors > 256))
    (void) WriteBlobMSBLong(image,0);
  else
    {
      /*
        Write PSD raster colormap.
      */
      (void) WriteBlobMSBLong(image,768);
      for (i=0; i < (ssize_t) image->colors; i++)
        (void) WriteBlobByte(image,ScaleQuantumToChar(image->colormap[i].red));
      for ( ; i < 256; i++)
        (void) WriteBlobByte(image,0);
      for (i=0; i < (ssize_t) image->colors; i++)
        (void) WriteBlobByte(image,ScaleQuantumToChar(
          image->colormap[i].green));
      for ( ; i < 256; i++)
        (void) WriteBlobByte(image,0);
      for (i=0; i < (ssize_t) image->colors; i++)
        (void) WriteBlobByte(image,ScaleQuantumToChar(image->colormap[i].blue));
      for ( ; i < 256; i++)
        (void) WriteBlobByte(image,0);
    }
  /*
    Image resource block.
  */
  length=28; /* 0x03EB */
  bim_profile=(StringInfo *) GetImageProfile(image,"8bim");
  icc_profile=GetImageProfile(image,"icc");
  if (bim_profile != (StringInfo *) NULL)
    {
      bim_profile=CloneStringInfo(bim_profile);
      if (icc_profile != (StringInfo *) NULL)
        RemoveICCProfileFromResourceBlock(bim_profile);
      RemoveResolutionFromResourceBlock(bim_profile);
      length+=PSDQuantum(GetStringInfoLength(bim_profile));
    }
  if (icc_profile != (const StringInfo *) NULL)
    length+=PSDQuantum(GetStringInfoLength(icc_profile))+12;
  (void) WriteBlobMSBLong(image,(unsigned int) length);
  WriteResolutionResourceBlock(image);
  if (bim_profile != (StringInfo *) NULL)
    {
      (void) WriteBlob(image,GetStringInfoLength(bim_profile),
        GetStringInfoDatum(bim_profile));
      bim_profile=DestroyStringInfo(bim_profile);
    }
  if (icc_profile != (StringInfo *) NULL)
    {
      (void) WriteBlob(image,4,(const unsigned char *) "8BIM");
      (void) WriteBlobMSBShort(image,0x0000040F);
      (void) WriteBlobMSBShort(image,0);
      (void) WriteBlobMSBLong(image,(unsigned int) GetStringInfoLength(
        icc_profile));
      (void) WriteBlob(image,GetStringInfoLength(icc_profile),
        GetStringInfoDatum(icc_profile));
      if ((ssize_t) GetStringInfoLength(icc_profile) !=
          PSDQuantum(GetStringInfoLength(icc_profile)))
        (void) WriteBlobByte(image,0);
    }
  base_image=GetNextImageInList(image);
  if (base_image == (Image *)NULL)
    base_image=image;
  size=0;
  size_offset=TellBlob(image);
  (void) SetPSDSize(&psd_info,image,0);
  (void) SetPSDSize(&psd_info,image,0);
  layer_count=0;
  for (next_image=base_image; next_image != NULL; )
  {
    layer_count++;
    next_image=GetNextImageInList(next_image);
  }
  if (image->matte != MagickFalse)
    size+=WriteBlobMSBShort(image,-(unsigned short) layer_count);
  else
    size+=WriteBlobMSBShort(image,(unsigned short) layer_count);
  layer_size_offsets=(MagickOffsetType *) AcquireQuantumMemory(
    (size_t) layer_count,sizeof(MagickOffsetType));
  if (layer_size_offsets == (MagickOffsetType *) NULL)
    ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
  layer_index=0;
  for (next_image=base_image; next_image != NULL; )
  {
    Image
      *mask;

    unsigned char
      default_color;

    unsigned short
      channels,
      total_channels;

    mask=(Image *) NULL;
    property=GetImageArtifact(next_image,"psd:opacity-mask");
    default_color=0;
    if (property != (const char *) NULL)
      {
        mask=(Image *) GetImageRegistry(ImageRegistryType,property,
          &image->exception);
        default_color=(unsigned char) (strlen(property) == 9 ? 255 : 0);
      }
    size+=WriteBlobMSBLong(image,(unsigned int) next_image->page.y);
    size+=WriteBlobMSBLong(image,(unsigned int) next_image->page.x);
    size+=WriteBlobMSBLong(image,(unsigned int) (next_image->page.y+
      next_image->rows));
    size+=WriteBlobMSBLong(image,(unsigned int) (next_image->page.x+
      next_image->columns));
    channels=1;
    if ((next_image->storage_class != PseudoClass) &&
        (IsGrayImage(next_image,&next_image->exception) == MagickFalse))
      channels=(unsigned short) (next_image->colorspace == CMYKColorspace ?
        4 : 3);
    total_channels=channels;
    if (next_image->matte != MagickFalse)
      total_channels++;
    if (mask != (Image *) NULL)
      total_channels++;
    size+=WriteBlobMSBShort(image,total_channels);
    layer_size_offsets[layer_index++]=TellBlob(image);
    for (i=0; i < (ssize_t) channels; i++)
      size+=WriteChannelSize(&psd_info,image,(signed short) i);
    if (next_image->matte != MagickFalse)
      size+=WriteChannelSize(&psd_info,image,-1);
    if (mask != (Image *) NULL)
      size+=WriteChannelSize(&psd_info,image,-2);
    size+=WriteBlob(image,4,(const unsigned char *) "8BIM");
    size+=WriteBlob(image,4,(const unsigned char *)
      CompositeOperatorToPSDBlendMode(next_image));
    property=GetImageArtifact(next_image,"psd:layer.opacity");
    if (property != (const char *) NULL)
      {
        Quantum
          opacity;

        opacity=(Quantum) StringToInteger(property);
        size+=WriteBlobByte(image,ScaleQuantumToChar(opacity));
        (void) ApplyPSDLayerOpacity(next_image,opacity,MagickTrue,
          &image->exception);
      }
    else
      size+=WriteBlobByte(image,255);
    size+=WriteBlobByte(image,0);
    size+=WriteBlobByte(image,(unsigned char)
      (next_image->compose == NoCompositeOp ? 1 << 0x02 : 1)); /* layer properties - visible, etc. */
    size+=WriteBlobByte(image,0);
    info=GetAdditionalInformation(image_info,next_image);
    property=(const char *) GetImageProperty(next_image,"label");
    if (property == (const char *) NULL)
      {
        (void) FormatLocaleString(layer_name,MaxTextExtent,"L%.20g",
          (double) layer_index);
        property=layer_name;
      }
    name_length=strlen(property)+1;
    if ((name_length % 4) != 0)
      name_length+=(4-(name_length % 4));
    if (info != (const StringInfo *) NULL)
      name_length+=GetStringInfoLength(info);
    name_length+=8;
    if (mask != (Image *) NULL)
      name_length+=20;
    size+=WriteBlobMSBLong(image,(unsigned int) name_length);
    if (mask == (Image *) NULL)
      size+=WriteBlobMSBLong(image,0);
    else
      {
        if (mask->compose != NoCompositeOp)
          (void) ApplyPSDOpacityMask(next_image,mask,ScaleCharToQuantum(
            default_color),MagickTrue,&image->exception);
        mask->page.y+=image->page.y;
        mask->page.x+=image->page.x;
        size+=WriteBlobMSBLong(image,20);
        size+=WriteBlobMSBSignedLong(image,(const signed int) mask->page.y);
        size+=WriteBlobMSBSignedLong(image,(const signed int) mask->page.x);
        size+=WriteBlobMSBSignedLong(image,(const signed int) (mask->rows+
          mask->page.y));
        size+=WriteBlobMSBSignedLong(image,(const signed int) (mask->columns+
          mask->page.x));
        size+=WriteBlobByte(image,default_color);
        size+=WriteBlobByte(image,(unsigned char) (
          mask->compose == NoCompositeOp ? 2 : 0));
        size+=WriteBlobMSBShort(image,0);
      }
    size+=WriteBlobMSBLong(image,0);
    size+=WritePascalString(image,property,4);
    if (info != (const StringInfo *) NULL)
      size+=WriteBlob(image,GetStringInfoLength(info),GetStringInfoDatum(info));
    next_image=GetNextImageInList(next_image);
  }
  /*
    Now the image data!
  */
  next_image=base_image;
  layer_index=0;
  while (next_image != NULL)
  {
    length=(size_t) WritePSDChannels(&psd_info,image_info,image,next_image,
      layer_size_offsets[layer_index++],MagickTrue);
    if (length == 0)
      {
        status=MagickFalse;
        break;
      }
    size+=length;
    next_image=GetNextImageInList(next_image);
  }
  (void) WriteBlobMSBLong(image,0);  /* user mask data */
  /*
    Remove the opacity mask from the registry
  */
  next_image=base_image;
  while (next_image != (Image *) NULL)
  {
    property=GetImageArtifact(next_image,"psd:opacity-mask");
    if (property != (const char *) NULL)
      (void) DeleteImageRegistry(property);
    next_image=GetNextImageInList(next_image);
  }
  /*
    Write the total size
  */
  size_offset+=WritePSDSize(&psd_info,image,size+
    (psd_info.version == 1 ? 8 : 12),size_offset);
  if ((size/2) != ((size+1)/2))
    rounded_size=size+1;
  else
    rounded_size=size;
  (void) WritePSDSize(&psd_info,image,rounded_size,size_offset);
  layer_size_offsets=(MagickOffsetType *) RelinquishMagickMemory(
    layer_size_offsets);
  /*
    Write composite image.
  */
  if (status != MagickFalse)
    {
      CompressionType
        compression;

      compression=image->compression;
      if (image_info->compression != UndefinedCompression)
        image->compression=image_info->compression;
      if (image->compression == ZipCompression)
        image->compression=RLECompression;
      if (WritePSDChannels(&psd_info,image_info,image,image,0,
          MagickFalse) == 0)
        status=MagickFalse;
      image->compression=compression;
    }
  (void) CloseBlob(image);
  return(status);
}


static void XSetBevelColor(Display *display,const XWindowInfo *window_info,
  const MagickStatusType raised)
{
  if (window_info->depth == 1)
    {
      Pixmap
        stipple;

      /*
        Monochrome window.
      */
      (void) XSetBackground(display,window_info->widget_context,
        XBlackPixel(display,window_info->screen));
      (void) XSetForeground(display,window_info->widget_context,
        XWhitePixel(display,window_info->screen));
      (void) XSetFillStyle(display,window_info->widget_context,
        FillOpaqueStippled);
      stipple=window_info->highlight_stipple;
      if (raised == MagickFalse)
        stipple=window_info->shadow_stipple;
      (void) XSetStipple(display,window_info->widget_context,stipple);
    }
  else
    if (raised)
      (void) XSetForeground(display,window_info->widget_context,
        window_info->pixel_info->highlight_color.pixel);
    else
      (void) XSetForeground(display,window_info->widget_context,
        window_info->pixel_info->shadow_color.pixel);
}


static inline LayerInfo *DestroyLayerInfo(LayerInfo *layer_info,
  const ssize_t number_layers)
{
  ssize_t
    i;

  for (i=0; i<number_layers; i++)
  {
    if (layer_info[i].image != (Image *) NULL)
      layer_info[i].image=DestroyImage(layer_info[i].image);
    if (layer_info[i].mask.image != (Image *) NULL)
      layer_info[i].mask.image=DestroyImage(layer_info[i].mask.image);
    if (layer_info[i].info != (StringInfo *) NULL)
      layer_info[i].info=DestroyStringInfo(layer_info[i].info);
  }

  return (LayerInfo *) RelinquishMagickMemory(layer_info);
}


static void WriteResolutionResourceBlock(Image *image)
{
  double
    x_resolution,
    y_resolution;

  unsigned short
    units;

  if (image->units == PixelsPerCentimeterResolution)
    {
      x_resolution=2.54*65536.0*image->x_resolution+0.5;
      y_resolution=2.54*65536.0*image->y_resolution+0.5;
      units=2;
    }
  else
    {
      x_resolution=65536.0*image->x_resolution+0.5;
      y_resolution=65536.0*image->y_resolution+0.5;
      units=1;
    }
  (void) WriteBlob(image,4,(const unsigned char *) "8BIM");
  (void) WriteBlobMSBShort(image,0x03ED);
  (void) WriteBlobMSBShort(image,0);
  (void) WriteBlobMSBLong(image,16); /* resource size */
  (void) WriteBlobMSBLong(image,(unsigned int) (x_resolution+0.5));
  (void) WriteBlobMSBShort(image,units); /* horizontal resolution unit */
  (void) WriteBlobMSBShort(image,units); /* width unit */
  (void) WriteBlobMSBLong(image,(unsigned int) (y_resolution+0.5));
  (void) WriteBlobMSBShort(image,units); /* vertical resolution unit */
  (void) WriteBlobMSBShort(image,units); /* height unit */
}


static int FontCompare(const void *x,const void *y)
{
  char
    *p,
    *q;

  p=(char *) *((char **) x);
  q=(char *) *((char **) y);
  while ((*p != '\0') && (*q != '\0') && (*p == *q))
  {
    p++;
    q++;
  }
  return(*p-(*q));
}


static inline size_t GetPSDPacketSize(const Image *image)
{
  if (image->storage_class == PseudoClass)
    {
      if (image->colors > 256)
        return(2);
    }
  if (image->depth > 16)
    return(4);
  if (image->depth > 8)
    return(2);
  return(1);
}


static void XDrawTriangleNorth(Display *display,const XWindowInfo *window_info,
  const XWidgetInfo *triangle_info)
{
  int
    x1,
    x2,
    x3,
    y1,
    y2,
    y3;

  unsigned int
    bevel_width;

  XPoint
    points[4];

  /*
    Draw triangle matte.
  */
  x1=triangle_info->x;
  y1=triangle_info->y+triangle_info->height;
  x2=triangle_info->x+(triangle_info->width >> 1);
  y2=triangle_info->y;
  x3=triangle_info->x+triangle_info->width;
  y3=triangle_info->y+triangle_info->height;
  bevel_width=triangle_info->bevel_width;
  points[0].x=x1;
  points[0].y=y1;
  points[1].x=x2;
  points[1].y=y2;
  points[2].x=x3;
  points[2].y=y3;
  XSetMatteColor(display,window_info,triangle_info->raised);
  (void) XFillPolygon(display,window_info->id,window_info->widget_context,
    points,3,Complex,CoordModeOrigin);
  /*
    Draw left bevel.
  */
  points[0].x=x1;
  points[0].y=y1;
  points[1].x=x2;
  points[1].y=y2;
  points[2].x=x2;
  points[2].y=y2-bevel_width-2;
  points[3].x=x1-bevel_width-1;
  points[3].y=y1+bevel_width;
  XSetBevelColor(display,window_info,triangle_info->raised);
  (void) XFillPolygon(display,window_info->id,window_info->widget_context,
    points,4,Complex,CoordModeOrigin);
  /*
    Draw right bevel.
  */
  points[0].x=x2;
  points[0].y=y2;
  points[1].x=x3;
  points[1].y=y3;
  points[2].x=x3+bevel_width;
  points[2].y=y3+bevel_width;
  points[3].x=x2;
  points[3].y=y2-bevel_width;
  XSetBevelColor(display,window_info,!triangle_info->raised);
  (void) XFillPolygon(display,window_info->id,window_info->widget_context,
    points,4,Complex,CoordModeOrigin);
  /*
    Draw lower bevel.
  */
  points[0].x=x3;
  points[0].y=y3;
  points[1].x=x1;
  points[1].y=y1;
  points[2].x=x1-bevel_width;
  points[2].y=y1+bevel_width;
  points[3].x=x3+bevel_width;
  points[3].y=y3+bevel_width;
  (void) XFillPolygon(display,window_info->id,window_info->widget_context,
    points,4,Complex,CoordModeOrigin);
  (void) XSetFillStyle(display,window_info->widget_context,FillSolid);
}


static inline MagickOffsetType *ReadPSDRLESizes(Image *image,
  const PSDInfo *psd_info,const size_t size)
{
  MagickOffsetType
    *sizes;

  ssize_t
    y;

  sizes=(MagickOffsetType *) AcquireQuantumMemory(size,sizeof(*sizes));
  if(sizes != (MagickOffsetType *) NULL)
    {
      for (y=0; y < (ssize_t) size; y++)
      {
        if (psd_info->version == 1)
          sizes[y]=(MagickOffsetType) ReadBlobShort(image);
        else
          sizes[y]=(MagickOffsetType) ReadBlobLong(image);
      }
    }
  return sizes;
}


static MagickBooleanType ReadPSDChannelPixels(Image *image,
  const size_t channels,const ssize_t row,const ssize_t type,
  const unsigned char *pixels,ExceptionInfo *exception)
{
  Quantum
    pixel;

  const unsigned char
    *p;

  IndexPacket
    *indexes;

  PixelPacket
    *q;

  ssize_t
    x;

  size_t
    packet_size;

  unsigned short
    nibble;

  p=pixels;
  q=GetAuthenticPixels(image,0,row,image->columns,1,exception);
  if (q == (PixelPacket *) NULL)
    return MagickFalse;
  indexes=GetAuthenticIndexQueue(image);
  packet_size=GetPSDPacketSize(image);
  for (x=0; x < (ssize_t) image->columns; x++)
  {
    if (packet_size == 1)
      pixel=ScaleCharToQuantum(*p++);
    else
      if (packet_size == 2)
        {
          p=PushShortPixel(MSBEndian,p,&nibble);
          pixel=ScaleShortToQuantum(nibble);
        }
      else
        {
          MagickFloatType
            nibble;

          p=PushFloatPixel(MSBEndian,p,&nibble);
          pixel=ClampToQuantum((MagickRealType)QuantumRange*nibble);
        }
    if (image->depth > 1)
      {
        SetPSDPixel(image,channels,type,packet_size,pixel,q,indexes,x);
        q++;
      }
    else
      {
        ssize_t
          bit,
          number_bits;

        number_bits=(ssize_t) image->columns-x;
        if (number_bits > 8)
          number_bits=8;
        for (bit=0; bit < number_bits; bit++)
        {
          SetPSDPixel(image,channels,type,packet_size,
            (((unsigned char) ((ssize_t) pixel)) & (0x01 << (7-bit))) != 0 ? 0 :
            QuantumRange,q++,indexes,x++);
        }
        if (x != (ssize_t) image->columns)
          x--;
        continue;
      }
  }
  return(SyncAuthenticPixels(image,exception));
}


static inline size_t GetPSDRowSize(Image *image)
{
  if (image->depth == 1)
    return(((image->columns+7)/8)*GetPSDPacketSize(image));
  else
    return(image->columns*GetPSDPacketSize(image));
}


static MagickBooleanType CorrectPSDAlphaBlend(const ImageInfo *image_info,
  Image *image,ExceptionInfo* exception)
{
  const char
    *option;

  MagickBooleanType
    status;

  ssize_t
    y;

  if ((image->matte == MagickFalse) || (image->colorspace != sRGBColorspace))
    return(MagickTrue);
  option=GetImageOption(image_info,"psd:alpha-unblend");
  if (IsStringNotFalse(option) == MagickFalse)
    return(MagickTrue);
  status=MagickTrue;
#if defined(MAGICKCORE_OPENMP_SUPPORT)
#pragma omp parallel for schedule(static) shared(status) \
  magick_number_threads(image,image,image->rows,1)
#endif
  for (y=0; y < (ssize_t) image->rows; y++)
  {
    PixelPacket
      *magick_restrict q;

    ssize_t
      x;

    if (status == MagickFalse)
      continue;
    q=GetAuthenticPixels(image,0,y,image->columns,1,exception);
    if (q == (PixelPacket *) NULL)
      {
        status=MagickFalse;
        continue;
      }
    for (x=0; x < (ssize_t) image->columns; x++)
    {
      double
        gamma;

      gamma=QuantumScale*GetPixelAlpha(q);
      if (gamma != 0.0 && gamma != 1.0)
        {
          SetPixelRed(q,ClampToQuantum((GetPixelRed(q)-((1.0-gamma)*
            QuantumRange))/gamma));
          SetPixelGreen(q,ClampToQuantum((GetPixelGreen(q)-((1.0-gamma)*
            QuantumRange))/gamma));
          SetPixelBlue(q,ClampToQuantum((GetPixelBlue(q)-((1.0-gamma)*
            QuantumRange))/gamma));
        }
      q++;
    }
    if (SyncAuthenticPixels(image,exception) == MagickFalse)
      status=MagickFalse;
  }

  return(status);
}