fieldviewc.c

linux下的E_MAIL客户端源码

/*
 * $Id: FieldViewC.C,v 1.9 2001/03/07 10:39:18 evgeny Exp $
 *
 * Copyright (c) 1992 HAL Computer Systems International, Ltd.
 * 
 *          HAL COMPUTER SYSTEMS INTERNATIONAL, LTD.
 *                  1315 Dell Avenue
 *                  Campbell, CA  95008
 *
 * Author: Greg Hilton
 * Contributors: Tom Lang, Frank Bieser, and others
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * http://www.gnu.org/copyleft/gpl.html
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */

#include <config.h>

#include "HalAppC.h"
#include "FieldViewC.h"
#include "VItemC.h"
#include "VBoxC.h"
#include "rsrc.h"
#include "WArgList.h"
#include "WXmString.h"

#include <Xm/Label.h>

#include <X11/keysym.h>
#include <X11/IntrinsicP.h>
#include <X11/CoreP.h>

#include <values.h>

/*-----------------------------------------------------------------------
 *  Method to check data pointer
 */

inline Boolean
FieldViewC::DataValid(const ItemDataC *data)
{
   return (data && (data->view == this));
}

/*-----------------------------------------------------------------------
 *  Constructor for FieldViewC
 */

FieldViewC::FieldViewC(VBoxC *vb) : ViewC(vb)
{
   WArgList	args;

   titleWin            = (Window)NULL;
   titleGC             = NULL;
   titlePickGC         = NULL;
   resizeCursor        = (Cursor)NULL;
   maxTitleHt          = 0;
   maxPmWd             = 0;
   focusHere           = False;
   hlItem              = NULL;
   flashItem           = NULL;
   flashTimer          = (XtIntervalId)NULL;
   dropItem            = NULL;
   dragIcon            = NULL;
   scrollTimer         = (XtIntervalId)NULL;
   pressItem           = NULL;
   clickCount          = 1;
   lastClickTime       = 0;
   needPlaces          = True;
   needSetVisItemCount = False;
   prevCompareFunction = NULL;

   columnList.AllowDuplicates(TRUE);
   columnDisplayOrder.AllowDuplicates(TRUE);
   columnDisplayOrder.SetSorted(FALSE);
   columnSortOrder.AllowDuplicates(FALSE);
   columnSortOrder.SetSorted(FALSE);

//
// Create a title area in the main view box
//
   Dimension	st, bw, mw;
   XtVaGetValues(vb->ViewFrame(), XmNshadowThickness, &st, XmNborderWidth,
		 &bw, XmNmarginWidth, &mw, NULL);
   Position	off = st + bw + mw;

   args.Reset();
   args.TopAttachment(XmATTACH_FORM);
   args.LeftAttachment(XmATTACH_FORM, off);
   args.RightAttachment(XmATTACH_FORM);
   args.BottomAttachment(XmATTACH_NONE);
   args.MarginWidth(0);
   args.MarginHeight(0);
   titleDA = XmCreateDrawingArea(vb->ViewForm(), "titleDA", ARGS);

   args.Reset();
   args.MappedWhenManaged(False);
   args.RecomputeSize(False);
   titleSizeLabel = XmCreateLabel(titleDA, "titleSizeLabel", ARGS);
   XtManageChild(titleSizeLabel);

   XtAddCallback(titleDA, XmNexposeCallback, (XtCallbackProc)TitleExpose,
		 (XtPointer)this);
   XtAddCallback(titleDA, XmNinputCallback,  (XtCallbackProc)TitleInput,
		 (XtPointer)this);

//
// Get resources
//
   Widget      da = viewBox->ViewDA();
   char	      *cl = "FieldViewC";
   regFgColor   = get_color(cl, da, "foreground",	  XtDefaultForeground);
   regBgColor   = get_color(cl, da, "background",	  XtDefaultBackground);
   hlColor      = get_color(cl, da, "highlightColor",	  regFgColor);
   invFgColor   = get_color(cl, da, "selectedForeground", regBgColor);
   invBgColor   = get_color(cl, da, "selectedBackground", regFgColor);
   titleFgColor = get_color(cl, da, "titleForeground",	  regFgColor);
   titleBgColor = get_color(cl, da, "titleBackground",	  regBgColor);
   dropColor	= get_color(cl, da, "validDropColor",	  hlColor);

   hlThick            = get_int(cl, da, XmNhighlightThickness);
   sepThick           = get_int(cl, da, "separatorThickness",	1);
   ySpacing           = get_int(cl, da, "vertSpacing");
   itemMarginWd       = get_int(cl, da, "itemMarginWidth");
   itemMarginHt       = get_int(cl, da, "itemMarginHeight");
   visItemCount       = get_int(cl, da, "visibleItemCount",	0);
   autoScrollInterval = get_int(cl, da, "autoScrollInterval",	100);
   pickSortThreshold  = get_int(cl, da, "pickSortThreshold",	7);

   showPixmaps           = get_boolean(cl, da, "showPixmaps",		True);
   dragTitlesEnabled     = get_boolean(cl, da, "dragTitlesEnabled",	True);
   pickSortColumnEnabled = get_boolean(cl, da, "pickSortColumnEnabled", False);
#if 0
   pickSortColumnEnabled = get_boolean(cl, da, "pickSortColumnEnabled", 
						viewBox->compFunc == NULL);
#endif

   if ( visItemCount > 0 ) needSetVisItemCount = True;

//
// Load the XmFontList
//
   fontList = viewBox->FontList();

//
// Load Font
//
   font = viewBox->Font();

//
// Get keyboard focus policy
//
   Widget	shell = XtParent(viewBox->ViewDA());
   while ( !XtIsShell(shell) ) shell = XtParent(shell);

   unsigned char	focusPolicy;
   XtVaGetValues(shell, XmNkeyboardFocusPolicy, &focusPolicy, NULL);

   if ( focusPolicy == XmEXPLICIT ) {

//
// Add event handler for keyboard focus change
//
      XtAddEventHandler(viewBox->ViewDA(), FocusChangeMask, False,
			(XtEventHandler)HandleFocusChange, (XtPointer)this);

   } else { // XmPOINTER

      XtAddEventHandler(viewBox->ViewDA(), EnterWindowMask|LeaveWindowMask,
			False, (XtEventHandler)HandleFocusChange,
			(XtPointer)this);
      XtAddEventHandler(viewBox->ViewDA(),
      			PointerMotionMask|PointerMotionHintMask, False,
			(XtEventHandler)HandlePointerMotion, (XtPointer)this);
   }

   if ( XtIsManaged(viewBox->ViewDA()) && needSetVisItemCount ) {
      SetVisibleItemCount(visItemCount);
   }

} // End Constructor

/*-----------------------------------------------------------------------
 *  Destructor for FieldViewC
 */

FieldViewC::~FieldViewC()
{
//
// Delete data
//
   unsigned	count = dataDict.size();
   int	i;
   for (i=0; i<count; i++) {
      delete dataDict[i]->val;
      delete dataDict[i];
   }

//
// Free pixmaps
//
   count = pixmapFileDict.size();
   for (i=0; i<count; i++) {
      PixmapC	*pm = pixmapFileDict[i]->val;
      delete pm;
   }

   count = pixmapDataDict.size();
   for (i=0; i<count; i++) {
      PixmapC	*pm = pixmapDataDict[i]->val;
      delete pm;
   }

   count = columnList.size();
   for (i=0; i<count; i++) {
      delete columnList[i];
   }

//
// Free graphics structures
//
   if ( halApp->xRunning ) {
      if ( titleGC     ) XtReleaseGC(titleDA, titleGC);
      if ( titlePickGC ) XtReleaseGC(viewBox->ViewDA(), titlePickGC);
      if ( resizeCursor ) XFreeCursor(halApp->display, resizeCursor);
   }

} // End Destructor

/*-----------------------------------------------------------------------
 *  Display this view
 */

void
FieldViewC::Show()
{
   shown = True;

//
// Display the title area
//
   if ( !titleWin && XtIsRealized(titleDA) ) InitializeTitle();
   XtManageChild(titleDA);

//
// Attach the scrolled window to the title area
//
   WArgList	args;
   args.TopAttachment(XmATTACH_WIDGET, titleDA);
   XtSetValues(viewBox->ScrollForm(), ARGS);

//
// Loop through items and add any that are needed
//
   VItemListC&	items = viewBox->Items();
   unsigned	count = items.size();
   for (int i=0; i<count; i++) {
      VItemC		*item = items[i];

//
// Look up the view data in the data dictionary
//
      ItemDataC *data = dataDict.definitionOf(item);
      if ( data ) {
         item->SetViewData(data);
	 //..data->GetFieldSizes(font);
      } else {
	 _AddItem(*item);
      }

   } // End for each item in view

   needPlaces = True;

//
// Set the GC values
//
   XtGCMask	valMask = GCClipMask | GCFillStyle | GCFunction
			| GCGraphicsExposures | GCLineStyle | GCLineWidth
			| GCPlaneMask | GCForeground;
   XGCValues vals;
   vals.clip_mask		= None;
   vals.fill_style		= FillSolid;
   vals.function		= GXcopy;
   vals.graphics_exposures	= TRUE;
   vals.line_style		= LineSolid;
   vals.line_width		= 0;
   vals.plane_mask		= AllPlanes;
   vals.foreground		= regFgColor;

   if ( viewBox->GoodFont() ) {
      valMask |= GCFont;
      vals.font = font->fid;
   }

   XChangeGC(halApp->display, viewBox->ViewGC(), valMask, &vals);

   _EnablePickSortColumn(pickSortColumnEnabled);

   Redraw();

} // End Show

/*-----------------------------------------------------------------------
 *  Remove this view
 */

void
FieldViewC::Hide()
{
//
// Attach the scrolled window to the form
//
   WArgList	args;
   args.TopAttachment(XmATTACH_FORM);
   XtSetValues(viewBox->ScrollForm(), ARGS);

//
// Hide the title areas
//
   XtUnmanageChild(titleDA);

//
// Clear view data
//
   VItemListC&	items = viewBox->Items();
   unsigned     count = items.size();
   for (int i=0; i<count; i++) {
      //cout <<"Clearing data for item " <<hex <<(int)items[i] <<dec NL;
      items[i]->SetViewData(NULL);
   }

   _EnablePickSortColumn(False);

   shown = False;

} // End Hide

/*-----------------------------------------------------------------------
 *  Calculate all sizes
 */

void
FieldViewC::PlaceItems()
{
   fontList = viewBox->FontList();
   font     = viewBox->Font();

//
// Initialize columns with title sizes.  Also get title height.
//
   maxTitleHt = 0;
   unsigned	ccount = columnList.size();
   int	i;
   for (i=0; i<ccount; i++) {

      int id = *columnDisplayOrder[i];
      ColumnC	*column = columnList[id];
      if ( !column->visible ) continue;

      FieldC&   title = column->title;
      if ( title.height == 0 ) GetTitleSize(title);

      column->curWd = title.width;
      if ( title.height > maxTitleHt ) maxTitleHt = title.height;

   } // End for each column

//
// Loop through items
//
   daHt    = 0;
   daWd    = 0;
   maxPmWd = 0;

   int	extra = (hlThick + itemMarginHt) * 2 + ySpacing;

   VItemListC&  visItems = viewBox->VisItems();
   unsigned     icount = visItems.size();
   for (i=0; i<icount; i++) {

      VItemC	*item = visItems[i];
      ItemDataC *data = (ItemDataC *)item->ViewData();
      if ( !DataValid(data) ) continue;

//
// Get the item size
//
      if ( data->itemHt == 0 ) GetFieldSizes(data);

//
// Update the pixmap size width
//
      if ( showPixmaps && data->pixmap && data->pixmap->wd > maxPmWd )
	 maxPmWd = data->pixmap->wd;

//
// Update the column widths
//
      for (int j=0; j<ccount; j++) {

	 int		pos     = *columnDisplayOrder[j];
	 ColumnC	*column = columnList[pos];
	 if ( !column->visible || pos < 0 || pos >= data->fieldList.size() )
	    continue;

	 FieldC  *field = data->fieldList[pos];
	 if ( field->width > column->curWd ) column->curWd = field->width;
	 
      } // End for each column

//
// Update the drawing area height
//
      daHt += data->itemHt + extra;

   } // End for each view item

   daHt -= ySpacing;

//
// Get the overall area width
//
   extra = (itemMarginWd*2) + sepThick;
   daWd = (itemMarginWd + hlThick) * 2;
   daWd += maxPmWd;
   for (i=0; i<ccount; i++) {

      int id = *columnDisplayOrder[i];
      ColumnC	*column = columnList[id];
      if ( !column->visible ) continue;

      daWd += column->Width() + extra;
   }

//
// Loop through the items and set their bounds
//
   extra = (hlThick + itemMarginHt) * 2;

   int	x = 0;
   int	y = 0;
   for (i=0; i<icount; i++) {

      VItemC	*item = visItems[i];
      ItemDataC	*data = (ItemDataC *)item->ViewData();
      if ( !DataValid(data) ) continue;

      int	ht = data->itemHt + extra;
      data->bounds.Set(x, y, daWd, ht);

      y += ht + ySpacing;

   } // End for each visible item

   needPlaces = False;

} // End PlaceItems

/*-----------------------------------------------------------------------
 *  Return size
 */

void
FieldViewC::GetSize(int *wd, int *ht)
{
   *wd = daWd;
   *ht = daHt;
}

/*-----------------------------------------------------------------------
 *  Public method to add a new item to this view box
 */

void
FieldViewC::AddItem(VItemC& item)
{
   if ( !viewBox->Realized() ) return;

//
// Add the item
//
   _AddItem(item);

//
// Redraw if necessary
//
   viewBox->Changed(True);

} // End AddItem

/*-----------------------------------------------------------------------
 *  Add new items to this view
 */

void
FieldViewC::AddItems(const VItemListC& list)
{
   if ( !viewBox->Realized() ) return;

//
// Add items
//
   unsigned	count = list.size();
   for (int i=0; i<count; i++) _AddItem(*list[i]);

   viewBox->Changed(True);

} // End AddItems

/*-----------------------------------------------------------------------
 *  Private method to add a new item to this view box