314 lines
8.5 KiB
C
314 lines
8.5 KiB
C
/*
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*********************************************************************************************************
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* uC/GUI
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* Universal graphic software for embedded applications
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*
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* (c) Copyright 2002, Micrium Inc., Weston, FL
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* (c) Copyright 2002, SEGGER Microcontroller Systeme GmbH
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*
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* µC/GUI is protected by international copyright laws. Knowledge of the
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* source code may not be used to write a similar product. This file may
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* only be used in accordance with a license and should not be redistributed
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* in any way. We appreciate your understanding and fairness.
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*
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----------------------------------------------------------------------
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File : EditDec
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Purpose : Edit decimal values
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---------------------------END-OF-HEADER------------------------------
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*/
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#include <string.h>
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#include "EDIT.h"
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#include "GUIDebug.h"
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#include "GUI_Protected.h"
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#include "EDIT_Private.h"
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#if GUI_WINSUPPORT
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/*********************************************************************
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*
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* Defaults for config switches
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*
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**********************************************************************
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*/
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#ifndef EDIT_DEC_DIGITONLY
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#define EDIT_DEC_DIGITONLY 0
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#endif
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/*********************************************************************
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*
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* static Helpers
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*
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**********************************************************************
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*/
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/*********************************************************************
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*
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* _DecChar2Int
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*/
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static int _DecChar2Int(int Char) {
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if ((Char >= '0') && (Char <= '9'))
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return Char - '0';
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return -1;
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}
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/*********************************************************************
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*
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* _UpdateBuffer
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*/
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static void _UpdateBuffer(EDIT_Handle hObj) {
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char * s;
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EDIT_Obj * pObj;
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pObj = EDIT_H2P(hObj); /* The GUI needs not to be locked here. This function is called only from EDIT_AddKey which has already locked the GUI */
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s = (char*) GUI_ALLOC_h2p(pObj->hpText);
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if (pObj->Flags == GUI_EDIT_SIGNED) {
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I32 Result = GUI_AddSign(pObj->CurrentValue, &s);
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GUI_AddDecShift(Result, pObj->MaxLen - 1, pObj->NumDecs, &s);
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} else {
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GUI_AddDecShift(pObj->CurrentValue, pObj->MaxLen, pObj->NumDecs, &s);
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}
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}
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/*********************************************************************
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*
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* _EditDec
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*/
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static void _EditDec(int Digit, EDIT_Obj* pObj, EDIT_Handle hObj) {
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I32 Result = 0;
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int i, Pos = 0;
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char * s = (char*) GUI_ALLOC_h2p(pObj->hpText);
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for (i = 0; i < pObj->MaxLen; i++) {
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int Index = pObj->MaxLen - i - 1;
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if (Index == pObj->CursorPos) {
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Result += GUI_Pow10[Pos++] * Digit;
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} else {
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char c = *(s + Index);
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int Value = _DecChar2Int(c);
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if (Value >= 0) {
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Result += GUI_Pow10[Pos++] * Value;
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}
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if (c == '-') {
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Result *= -1;
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}
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}
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}
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EDIT_SetValue(hObj, Result);
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}
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/*********************************************************************
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*
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* EDIT_DEC_DIGITONLY
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*/
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#if EDIT_DEC_DIGITONLY
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static int GetCurrentDigit(EDIT_Obj* pObj) {
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return _DecChar2Int(EDIT__GetCurrentChar(pObj));
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}
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#endif
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/*********************************************************************
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*
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* _MakePositive
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*/
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static void _MakePositive(EDIT_Obj* pObj, EDIT_Handle hObj) {
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if ((I32)pObj->CurrentValue < 0) {
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EDIT_SetValue(hObj, (I32)pObj->CurrentValue * -1);
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}
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}
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/*********************************************************************
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*
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* _MakeNegative
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*/
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static void _MakeNegative(EDIT_Obj* pObj, EDIT_Handle hObj) {
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if ((I32)pObj->CurrentValue > 0) {
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EDIT_SetValue(hObj, (I32)pObj->CurrentValue * -1);
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}
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}
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/*********************************************************************
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*
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* _SwapSign
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*/
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static void _SwapSign(EDIT_Obj* pObj, EDIT_Handle hObj) {
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if ((I32)pObj->CurrentValue > 0)
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_MakeNegative(pObj, hObj);
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else
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_MakePositive(pObj, hObj);
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}
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/*********************************************************************
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*
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* _IncrementCursor
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*/
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static void _IncrementCursor(EDIT_Obj* pObj) {
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EDIT__SetCursorPos(pObj, pObj->CursorPos + 1);
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if (EDIT__GetCurrentChar(pObj) == '.') {
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if (pObj->CursorPos < (pObj->MaxLen - 1)) {
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EDIT__SetCursorPos(pObj, pObj->CursorPos + 1);
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} else {
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EDIT__SetCursorPos(pObj, pObj->CursorPos - 1);
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}
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}
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}
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/*********************************************************************
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*
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* _AddPosition
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*/
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#if !EDIT_DEC_DIGITONLY
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static void _AddPosition(EDIT_Obj* pObj, EDIT_Handle hObj, int Sign) {
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int Pos;
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I32 v;
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v = Sign;
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Pos = pObj->MaxLen - pObj->CursorPos-1;
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if (pObj->NumDecs && (Pos > pObj->NumDecs)) {
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Pos--;
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}
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while (Pos--) {
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v *= 10;
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}
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EDIT_SetValue(hObj, (I32)pObj->CurrentValue + v);
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}
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#endif
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/*********************************************************************
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*
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* Handle input
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*
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**********************************************************************
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*/
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/*********************************************************************
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*
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* _AddKeyDec
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*/
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static void _AddKeyDec(EDIT_Handle hObj, int Key) {
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char c;
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EDIT_Obj * pObj;
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pObj = EDIT_H2P(hObj); /* The GUI needs not to be locked here. This function is called only from EDIT_AddKey which has already locked the GUI */
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if (pObj) {
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switch (Key) {
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case '+':
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if (pObj->CursorPos == 0) {
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_MakePositive(pObj, hObj);
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_IncrementCursor(pObj);
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}
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break;
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case '-':
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if (pObj->CursorPos == 0) {
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_MakeNegative(pObj, hObj);
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_IncrementCursor(pObj);
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}
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break;
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#if EDIT_DEC_DIGITONLY
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case GUI_KEY_UP:
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c = EDIT__GetCurrentChar(pObj);
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if ((c == '-') || (c == '+')) {
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_SwapSign(pObj, hObj);
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} else {
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int Digit = GetCurrentDigit(pObj) + 1;
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if (Digit > 9)
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Digit = 0;
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_EditDec(Digit, pObj, hObj);
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}
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break;
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case GUI_KEY_DOWN:
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c = EDIT__GetCurrentChar(pObj);
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if ((c == '-') || (c == '+')) {
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_SwapSign(pObj, hObj);
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} else {
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int Digit = GetCurrentDigit(pObj) - 1;
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if (Digit < 0)
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Digit = 9;
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_EditDec(Digit, pObj, hObj);
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}
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break;
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#else
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case GUI_KEY_UP:
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c = EDIT__GetCurrentChar(pObj);
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if ((c == '-') || (c == '+')) {
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_SwapSign(pObj, hObj);
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} else {
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_AddPosition(pObj, hObj, 1);
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}
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break;
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case GUI_KEY_DOWN:
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c = EDIT__GetCurrentChar(pObj);
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if ((c == '-') || (c == '+')) {
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_SwapSign(pObj, hObj);
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} else {
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_AddPosition(pObj, hObj, -1);
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}
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break;
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#endif
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case GUI_KEY_RIGHT:
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_IncrementCursor(pObj);
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break;
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case GUI_KEY_LEFT:
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EDIT__SetCursorPos(pObj, pObj->CursorPos - 1);
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if (EDIT__GetCurrentChar(pObj) == '.') {
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if (pObj->CursorPos > 0) {
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EDIT__SetCursorPos(pObj, pObj->CursorPos - 1);
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} else {
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EDIT__SetCursorPos(pObj, pObj->CursorPos + 1);
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}
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}
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break;
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default:
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{
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char c = EDIT__GetCurrentChar(pObj);
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if ((c != '-') && (c != '+')) {
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int Digit = _DecChar2Int(Key);
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if (Digit >= 0) {
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_EditDec(Digit, pObj, hObj);
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_IncrementCursor(pObj);
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}
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}
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}
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break;
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}
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}
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_UpdateBuffer(hObj);
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}
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/*********************************************************************
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*
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* Exported routines
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*
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**********************************************************************
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*/
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/*********************************************************************
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*
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* EDIT_SetDecMode
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*/
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void EDIT_SetDecMode(EDIT_Handle hEdit, I32 Value, I32 Min, I32 Max, int Shift, U8 Flags) {
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EDIT_Obj* pObj;
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WM_LOCK();
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if (hEdit) {
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pObj = EDIT_H2P(hEdit);
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pObj->pfAddKeyEx = _AddKeyDec;
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pObj->pfUpdateBuffer= _UpdateBuffer;
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pObj->CurrentValue = Value;
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pObj->CursorPos = 0;
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pObj->Min = Min;
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pObj->Max = Max;
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pObj->NumDecs = Shift;
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pObj->Flags = Flags;
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pObj->EditMode = GUI_EDIT_MODE_OVERWRITE;
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_UpdateBuffer(hEdit);
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if (EDIT__GetCurrentChar(pObj) == '.') {
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EDIT__SetCursorPos(pObj, pObj->CursorPos + 1);
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}
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WM_Invalidate(hEdit);
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}
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WM_UNLOCK();
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}
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#else /* avoid empty object files */
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void EditDec_C(void);
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void EditDec_C(void){}
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#endif /* GUI_WINSUPPORT */
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