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/*
File: EditControl.cpp
Description: Edit control (in menu page)
Program: BlockOut
Author: Jean-Luc PONS
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.
*/
#include "Menu.h"
// ------------------------------------------------
EditControl::EditControl() {
}
// ------------------------------------------------
void EditControl::SetDisplayLength(int length) {
displayLgth = length;
}
// ------------------------------------------------
void EditControl::SetMode(char *text,BOOL edit,BYTE *keys) {
if( strlen(text)>=255 ) {
strncpy(editText,text,255);
editText[254]=' ';
editText[255]=0;
} else {
strcpy(editText,text);
strcat(editText," ");
}
startEditTime = 0.0f;
editCursor = FALSE;
editMode = edit;
startPos = 0;
editPos = 0;
if(keys) ZeroMemory( keys, SDLK_LAST * sizeof(BYTE) );
}
// ------------------------------------------------
BOOL EditControl::GetMode() {
return editMode;
}
// ------------------------------------------------
int EditControl::Process(BYTE *keys,float fTime) {
int retValue = 0;
if( startEditTime == 0.0f )
startEditTime = fTime;
editCursor = ( (fround((startEditTime - fTime) * 2.0f)%2) == 0 );
char c = GetChar(keys);
int lgth = strlen(editText);
if( c>0 && lgth<255 ) {
InsertChar(c,editPos);
editPos++;
lgth++;
}
// Back space
if( keys[SDLK_BACKSPACE] ) {
if( editPos>0 ) {
editPos--;
DeleteChar(editPos);
lgth--;
}
keys[SDLK_BACKSPACE] = 0;
}
// Delete
if( keys[SDLK_DELETE] ) {
if( editPos<lgth-1 ) {
DeleteChar(editPos);
lgth--;
}
keys[SDLK_DELETE] = 0;
}
// Arrow keys
if( keys[SDLK_LEFT] ) {
if( editPos>0 ) {
editPos--;
}
keys[SDLK_LEFT] = 0;
}
if( keys[SDLK_RIGHT] ) {
if( editPos<(lgth-1) ) {
editPos++;
}
keys[SDLK_RIGHT] = 0;
}
// Scroll to visible
if( editPos < startPos ) {
startPos = editPos;
}
if( (editPos-startPos) >= displayLgth ) {
startPos++;
}
if( keys[SDLK_ESCAPE] ) {
// Cancelling
editMode = FALSE;
retValue = 2;
ZeroMemory( keys, SDLK_LAST * sizeof(BYTE) );
keys[SDLK_ESCAPE] = 0;
}
if( keys[SDLK_RETURN] ) {
int x = 0;
editText[lgth-1]=0; // Remove last ' '
retValue = 1;
editMode = FALSE;
ZeroMemory( keys, SDLK_LAST * sizeof(BYTE) );
keys[SDLK_RETURN] = 0;
}
return retValue;
}
// ------------------------------------------------
char *EditControl::GetText() {
return editText;
}
// ------------------------------------------------
void EditControl::Render(Menu *m,int x,int y) {
if( editMode ) {
char vText[256];
strcpy(vText,editText+startPos);
vText[displayLgth]=0;
m->RenderText(x,y,FALSE,vText);
char vChar[2];
vChar[0] = editText[editPos];
vChar[1] = 0;
m->RenderText(x+(editPos-startPos),y,editCursor,vChar);
}
}
// ------------------------------------------------
void EditControl::InsertChar(char c,int pos) {
int lgth = strlen(editText);
int i;
for(i=lgth+1;i>pos;i--)
editText[i] = editText[i-1];
editText[i] = c;
}
// ------------------------------------------------
void EditControl::DeleteChar(int pos) {
int lgth = strlen(editText);
for(int i=pos;i<lgth;i++)
editText[i] = editText[i+1];
}
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