// $Id: optsundo.cpp 1282 2006-06-09 09:46:49Z alex $ /* @@tag:xara-cn@@ DO NOT MODIFY THIS LINE ================================XARAHEADERSTART=========================== Xara LX, a vector drawing and manipulation program. Copyright (C) 1993-2006 Xara Group Ltd. Copyright on certain contributions may be held in joint with their respective authors. See AUTHORS file for details. LICENSE TO USE AND MODIFY SOFTWARE ---------------------------------- This file is part of Xara LX. Xara LX is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License version 2 as published by the Free Software Foundation. Xara LX and its component source files are 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. 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Xara Group Ltd, Gaddesden Place, Hemel Hempstead, HP2 6EX, UK. http://www.xara.com/ =================================XARAHEADEREND============================ */ // // Implementation of the Undo tab of the options dialog box /* */ #include "camtypes.h" #include "appprefs.h" #include "optsundo.h" //#include "app.h" // Camelot object - in camtypes.h [AUTOMATICALLY REMOVED] //#include "convert.h" // StringToBytes and BytesToString - in camtypes.h [AUTOMATICALLY REMOVED] #include "ophist.h" CC_IMPLEMENT_DYNAMIC(UndoTab, OptionsTabs) // This is not compulsory, but you may as well put it in so that the correct version // of your file can be registered in the .exe DECLARE_SOURCE("$Revision: 1282 $"); /******************************************************************************************** > UndoTab::UndoTab() Author: Neville_Humphrys (Xara Group Ltd) Created: 20/1/95 Inputs: - Outputs: - Returns: - Purpose: UndoTab constructor. Creates a non-undoable operation Errors: - SeeAlso: - ********************************************************************************************/ UndoTab::UndoTab() { // Do nothing at present } /******************************************************************************************** > UndoTab::~UndoTab() Author: Neville_Humphrys (Xara Group Ltd) Created: 20/1/95 Inputs: - Outputs: - Returns: - Purpose: UndoTab destructor Errors: - SeeAlso: - ********************************************************************************************/ UndoTab::~UndoTab() { } /******************************************************************************************** > BOOL UndoTab::Init() Author: Neville_Humphrys (Xara Group Ltd) Created: 20/1/95 Inputs: - Outputs: - Returns: True if initialised ok, False if failed. Purpose: UndoTab initialisation routine Errors: - SeeAlso: - ********************************************************************************************/ BOOL UndoTab::Init() { return TRUE; } /****************************************************************************************** > CDlgResID UndoTab::GetPageID()() Author: Neville_Humphrys (Xara Group Ltd) Created: 20/1/95 Inputs: - Outputs: - Returns: The dialog ID of this tab section. Purpose: Allows the options dialog code to determine the dialog ID of this section. Errors: - SeeAlso: - ******************************************************************************************/ CDlgResID UndoTab::GetPageID() { return _R(IDD_OPTSTAB_UNDO); } /****************************************************************************************** > BOOL UndoTab::IsDocumentOption() Author: Neville_Humphrys (Xara Group Ltd) Created: 20/1/95 Inputs: - Outputs: - Returns: Returns True if this tab is a document option. Purpose: Allows the document options dialog code to determine if this tab belongs to the group of document options. Errors: - SeeAlso: IsProgramOption(); ******************************************************************************************/ BOOL UndoTab::IsDocumentOption() { return TRUE; // This tab is not a document option } /****************************************************************************************** > BOOL UndoTab::IsProgramOption() Author: Neville_Humphrys (Xara Group Ltd) Created: 20/1/95 Inputs: - Outputs: - Returns: Returns True if this tab is a program option. Purpose: Allows the program options dialog code to determine if this tab belongs to the group of program options. Errors: - SeeAlso: IsProgramOption(); ******************************************************************************************/ BOOL UndoTab::IsProgramOption() { return TRUE; // This tab is a program option } /****************************************************************************************** > BOOL UndoTab::CommitSection() Author: Neville_Humphrys (Xara Group Ltd) Created: 20/1/95 Inputs: - Outputs: - Returns: True if values in dialog box ok, False otherwise. Purpose: Takes the values in the Undo section tab of the options dialog box and sets the associated preference values accordingly Called when ok is pressed on the dialog box. Errors: - SeeAlso: - ******************************************************************************************/ BOOL UndoTab::CommitSection() { TRACEUSER( "Neville", _T("commit undo section\n")); ERROR3IF(pPrefsDlg == NULL, "UndoTab::CommitSection called with no dialog pointer"); BOOL ok = pPrefsDlg->TalkToPage(_R(IDD_OPTSTAB_UNDO)); // The Undo View identifier if (!ok) return TRUE; // Talk to View failed to return now // Ok has been pressed so take the values from this section of the dialog box BOOL Valid=TRUE; // Flag for validity of value // BOOL State=FALSE; // Flag for state of button/switch // BOOL SetOk=TRUE; // Preference value set ok // Section = Undo settings // Get the currently selected document Document* pDocument = Document::GetSelected(); if (pDocument != NULL) { // Getthe current undo size UINT32 CurrentSize = pDocument->GetOpHistory().GetSize(); UINT32 CurrentMaxSize = pDocument->GetOpHistory().GetMaxSize(); // Now read the state of the use maximum memory switch, if on then set TempWorkMemory to 0 BOOL Unlimited = pPrefsDlg->GetLongGadgetValue(_R(IDC_OPTS_UNLIMITEDUNDO), 0, 1, 0, &Valid); UINT32 NewMaxUndoSize; if (Unlimited) { // Use the maximum possible value NewMaxUndoSize = UINT32_MAX; } else { // Read the value from the editable field limiting the values in the process NewMaxUndoSize = pPrefsDlg->GetMemoryGadgetValue(_R(IDC_OPTS_MAXUNDOSIZE), 1*1024, UINT32_MAX-1, _R(IDE_OPTS_INVALIDUNDOSIZE), &Valid); if (!Valid) return FALSE; // Undo size incorrect, user has been warned already } TRACEUSER( "Neville", _T("Current undo size =%d\n"),CurrentSize); TRACEUSER( "Neville", _T("Current maximum undo size =%d\n"),CurrentMaxSize); TRACEUSER( "Neville", _T("New maximum undo size =%d\n"),NewMaxUndoSize); // If a new size has been entered then try to set this as the new maximum if (NewMaxUndoSize != CurrentMaxSize) { #if 0 //def _DEBUG // If the resize means that data will be lost then warn the user and ask for confirmation // otherwise just set the new limit. BOOL OkToResize = TRUE; if (NewMaxUndoSize < CurrentSize) { // Ask user to confirm loss of undo data // Warn the user that there is no selection = large export ErrorInfo Info; Info.ErrorMsg = _R(IDT_OPTS_LOSSOFUNDO); Info.Button[0] = _R(IDB_UNDOQUERY_RESIZE); Info.Button[1] = _R(IDB_UNDOQUERY_DONTRESIZE); if (AskQuestion(&Info) == _R(IDB_UNDOQUERY_DONTRESIZE)) { // If the user has cancelled just display the current value again OkToResize = FALSE; } } // If everything is ok then try the resize if (OkToResize) { SetOk = pDocument->GetOpHistory().SetNewMaxSize(NewMaxUndoSize); if (!SetOk) { // Out of ID's at present so use wrong error message InformError(_R(IDE_OPTS_BADUNDORESIZE)); // Force the update to the old max size value OkToResize = FALSE; } } // If for any reason OkToResize has been set ot FALSE then update the undo size // field and exit FALSE if (!OkToResize) { // Restore the MaxSize in dialog field //String_256 String; // Get current size UINT32 MaxUndoSize = pDocument->GetOpHistory().GetMaxSize(); // Show that value on the dialog box as a memory size pPrefsDlg->SetMemoryGadgetValue(_R(IDC_OPTS_MAXUNDOSIZE), MaxUndoSize); return FALSE; } #else InformWarning(_R(IDW_NOUNDORESIZING)); #endif } } //else // ERROR2(FALSE,_R(IDE_OPTS_SETPREF_UNDO)); return TRUE; } /******************************************************************************************** > BOOL UndoTab::GreySection() Author: Neville_Humphrys (Xara Group Ltd) Created: 4/2/95 Inputs: - Outputs: - Returns: - Purpose: Called when the user has closed all documents Errors: - SeeAlso: UndoTab::UngreySection; ********************************************************************************************/ BOOL UndoTab::GreySection() { TRACEUSER( "Neville", _T("GreySection in UndoTab section\n")); ERROR2IF(pPrefsDlg == NULL,FALSE,"UndoTab::GreySection called with no dialog pointer"); BOOL ok = pPrefsDlg->TalkToPage(_R(IDD_OPTSTAB_UNDO)); // The UndoTab identifier if (!ok) return TRUE; // Talk to page failed to return now // Only update if we are not already grey if (GreyStatus == TRUE) return TRUE; // Call our central greying/ungreying function ok = ChangeControlStatus(FALSE); GreyStatus = TRUE; return ok; } /******************************************************************************************** > BOOL UndoTab::UngreySection() Author: Neville_Humphrys (Xara Group Ltd) Created: 4/2/95 Inputs: - Outputs: - Returns: - Purpose: Called when the user has selected a new document Errors: - SeeAlso: UndoTab::UngreySection; ********************************************************************************************/ BOOL UndoTab::UngreySection() { TRACEUSER( "Neville", _T("UngreySection in UndoTab section\n")); ERROR2IF(pPrefsDlg == NULL,FALSE,"UndoTab::UngreySection called with no dialog pointer"); BOOL ok = pPrefsDlg->TalkToPage(_R(IDD_OPTSTAB_UNDO)); // The UndoTab identifier if (!ok) return TRUE; // Talk to page failed to return now // Only update if we are not already ungrey if (GreyStatus == FALSE) return TRUE; // Call our central greying/ungreying function ok = ChangeControlStatus(TRUE); GreyStatus = FALSE; return ok; } /******************************************************************************************** > BOOL UndoTab::ChangeControlStatus(const BOOL Status) Author: Neville_Humphrys (Xara Group Ltd) Created: 4/2/95 Inputs: - Outputs: - Returns: - Purpose: Called to grey/ungrey all controls on this tab. Errors: - SeeAlso: UndoTab::GreySection; UndoTab::UngreySection; ********************************************************************************************/ BOOL UndoTab::ChangeControlStatus(const BOOL Status) { pPrefsDlg->EnableGadget(_R(IDC_OPTS_UNDOGROUP), Status); pPrefsDlg->EnableGadget(_R(IDC_OPTS_UNDOSIZETXT), Status); pPrefsDlg->EnableGadget(_R(IDC_OPTS_UNDOSIZE), Status); pPrefsDlg->EnableGadget(_R(IDC_OPTS_MAXUNDOSIZE), Status); pPrefsDlg->EnableGadget(_R(IDC_OPTS_UNLIMITEDUNDO), Status); pPrefsDlg->EnableGadget(_R(IDC_OPTS_MAXUNDOTXT), Status); pPrefsDlg->EnableGadget(_R(IDC_OPTS_MAXUNDOSIZE), Status); return TRUE; } /******************************************************************************************** > BOOL UndoTab::UpdateSection(String_256 *DocumentName) Author: Neville_Humphrys (Xara Group Ltd) Created: 4/2/95 Inputs: Name of document Outputs: - Returns: - Purpose: Called when we have switched to a new document and need to update all the controls on this tab. Should only init the tab if the page is present. The document name allows the info field on the tab to be filled in correctly. Errors: - SeeAlso: UndoTab::GreySection; UndoTab::UngreySection; UndoTab::InitSection; ********************************************************************************************/ BOOL UndoTab::UpdateSection(String_256 *DocumentName) { TRACEUSER( "Neville", _T("UndoTab::UpdateSection\n")); ERROR2IF(pPrefsDlg == NULL,FALSE,"UndoTab::UpdateSection called with no dialog pointer"); BOOL ok = pPrefsDlg->TalkToPage(_R(IDD_OPTSTAB_UNDO)); // The UndoTab identifier if (!ok) return TRUE; // page not present // Remove any lists that we have created. //pPrefsDlg->DeleteAllValues(_R(IDC_OPTS_SIZELIST)); // Call the normal init section code return InitSection(); } /******************************************************************************************** > BOOL UndoTab::HandleMsg(DialogMsg* Msg) Author: Neville_Humphrys (Xara Group Ltd) Created: 20/1/95 Inputs: - Outputs: - Returns: - Purpose: Handles all the Undo options tabs messages Errors: - SeeAlso: - ********************************************************************************************/ BOOL UndoTab::HandleMsg(DialogMsg* Msg) { TRACEUSER( "Neville", _T("HandleUndoMsg\n")); ERROR2IF(Msg == NULL,FALSE,"UndoTab::Message null message received"); ERROR2IF(pPrefsDlg == NULL,FALSE,"UndoTab::HandleMsg called with no dialog pointer"); BOOL ok = pPrefsDlg->TalkToPage(_R(IDD_OPTSTAB_UNDO)); // The Undo View identifier if (!ok) return TRUE; // page not present switch(Msg->DlgMsg) { case DIM_CREATE: // Initialise controls GreyStatus = FALSE; // we are ungreyed by default ok = InitSection(); if (!ok) InformError(); break; case DIM_LFT_BN_CLICKED: OptionsTabs::SetApplyNowState(TRUE); if (Msg->GadgetID == _R(IDC_OPTS_UNLIMITEDUNDO)) { BOOL Valid; BOOL Unlimited = pPrefsDlg->GetLongGadgetValue(_R(IDC_OPTS_UNLIMITEDUNDO), 0, 1, 0, &Valid); // If set then grey the editable field and its name text otherwise ungrey pPrefsDlg->EnableGadget(_R(IDC_OPTS_MAXUNDOTXT), !Unlimited); pPrefsDlg->EnableGadget(_R(IDC_OPTS_MAXUNDOSIZE), !Unlimited); } #if 0 else if (Msg->GadgetID == _R(IDC_OPTS_DEFAULTUNDO)) { // Set the MaxSize in the dialog field to a default value String_256 String; UINT32 MaxUndoSize = UINT32_MAX; //40*1024*1024; // 40 Mbytes // Put that size in a string formatted as a memory size value BytesToString(&String, MaxUndoSize); // Show that on the dialog box pPrefsDlg->SetStringGadgetValue(_R(IDC_OPTS_MAXUNDOSIZE), &String); } #endif break; case DIM_SELECTION_CHANGED: case DIM_TEXT_CHANGED: OptionsTabs::SetApplyNowState(TRUE); break; default: break; } return TRUE; } /****************************************************************************************** > BOOL UndoTab::InitSection() Author: Neville_Humphrys (Xara Group Ltd) Created: 20/1/95 Inputs: - Outputs: - Returns: TRUE if successful, else FALSE Purpose: Sets initial values for the Undo section of the options dialog box. This section includes the:- - Unlimited undo memory size switch - OR maximum memory allowed for undo system Errors: - SeeAlso: AppPrefsDlg; OptionsTabs; ******************************************************************************************/ BOOL UndoTab::InitSection() { TRACEUSER( "Neville", _T("InitUndoSection\n")); ERROR2IF(pPrefsDlg == NULL,FALSE,"UndoTab::InitSection called with no dialog pointer"); // BOOL ReadOk = FALSE; // Flag to say whether the preference value was read ok // Make sure the information field displaying the name of the current document // is correct. String_256 *DocumentName = GetDocumentName(); pPrefsDlg->SetStringGadgetValue(_R(IDC_OPTS_DOCUMENT), *DocumentName); // Section = Undo settings // Set up the display for the current size of the undo buffer. Document* pDocument = Document::GetSelected(); if (pDocument != NULL) { // Get the current undo size UINT32 UndoSize = pDocument->GetOpHistory().GetSize(); // Put that size in a string formatted as a memory size value // and show that on the dialog box pPrefsDlg->SetMemoryGadgetValue(_R(IDC_OPTS_UNDOSIZE), UndoSize); // Now get the currently set maximum size UINT32 MaxUndoSize = pDocument->GetOpHistory().GetMaxSize(); // If set at the maximum size possible then assume unlimited BOOL Unlimited = FALSE; if (MaxUndoSize == UINT32_MAX) Unlimited = TRUE; else Unlimited = FALSE; // Put that size in a string formatted as a memory size value // and show that on the dialog box pPrefsDlg->SetMemoryGadgetValue(_R(IDC_OPTS_MAXUNDOSIZE), MaxUndoSize); // Set the unlimited switch state pPrefsDlg->SetLongGadgetValue(_R(IDC_OPTS_UNLIMITEDUNDO), Unlimited); // Grey or ungrey the editable field and its name text accordingly pPrefsDlg->EnableGadget(_R(IDC_OPTS_MAXUNDOTXT), !Unlimited); pPrefsDlg->EnableGadget(_R(IDC_OPTS_MAXUNDOSIZE), !Unlimited); TRACEUSER( "Neville", _T("undo size ='%d'\n"),UndoSize); TRACEUSER( "Neville", _T("max undo size ='%d'\n"),MaxUndoSize); } else { // Ensure our section is greyed GreySection(); } return TRUE; }