Added some basic text display and editing capabilities, cursor
positioning, a bit of scrolling and a text file loader.
This commit is contained in:
parent
7f392f5e1b
commit
0e2d0e076f
|
@ -55,7 +55,7 @@ void AlertFileNotFound(LPSTR szFileName) {
|
|||
|
||||
/* Load and format szMessage */
|
||||
LoadString(Globals.hInstance, IDS_NOTFOUND, szRessource, sizeof(szRessource));
|
||||
wvsprintf(szMessage, szRessource, szFileName);
|
||||
wsprintf(szMessage, szRessource, szFileName);
|
||||
|
||||
/* Load szCaption */
|
||||
LoadString(Globals.hInstance, IDS_ERROR, szRessource, sizeof(szRessource));
|
||||
|
@ -74,7 +74,7 @@ int AlertFileNotSaved(LPSTR szFileName) {
|
|||
/* Load and format Message */
|
||||
|
||||
LoadString(Globals.hInstance, IDS_NOTSAVED, szRessource, sizeof(szRessource));
|
||||
wvsprintf(szMessage, szRessource, szFileName);
|
||||
wsprintf(szMessage, szRessource, szFileName);
|
||||
|
||||
/* Load Caption */
|
||||
|
||||
|
@ -146,19 +146,12 @@ BOOL DoCloseFile(void) {
|
|||
|
||||
void DoOpenFile(LPCSTR szFileName) {
|
||||
|
||||
int hFile;
|
||||
WORD nResult;
|
||||
|
||||
/* Close any files and prompt to save changes */
|
||||
if (DoCloseFile()) {
|
||||
GetFileTitle(szFileName, Globals.szFileName, sizeof(Globals.szFileName));
|
||||
LANGUAGE_UpdateWindowCaption();
|
||||
hFile = _lopen(szFileName, OF_READ);
|
||||
nResult = _lread(hFile, Globals.Buffer, sizeof(Globals.Buffer));
|
||||
_lclose(hFile);
|
||||
|
||||
/* FIXME: Append time/date if first line contains LOGPREFIX */
|
||||
/* (Globals.Buffer, ) */
|
||||
LoadBufferFromFile(szFileName);
|
||||
}
|
||||
}
|
||||
|
||||
|
@ -167,7 +160,7 @@ VOID DIALOG_FileNew(VOID)
|
|||
{
|
||||
/* Close any files and promt to save changes */
|
||||
if (DoCloseFile()) {
|
||||
/* do nothing yet */
|
||||
TrashBuffer();
|
||||
}
|
||||
}
|
||||
|
||||
|
|
|
@ -1,8 +1,25 @@
|
|||
/*
|
||||
* Notepad
|
||||
*
|
||||
* Copyright 2000 Mike McCormack <Mike_McCormack@looksmart.com.au>
|
||||
* Copyright 1997,98 Marcel Baur <mbaur@g26.ethz.ch>
|
||||
* To be distributed under the Wine License
|
||||
*
|
||||
* FIXME,TODO list:
|
||||
* - Use wine Heap instead of malloc/free (done)
|
||||
* - use scroll bars (vertical done)
|
||||
* - cut 'n paste (clipboard)
|
||||
* - save file
|
||||
* - print file
|
||||
* - find dialog
|
||||
* - encapsulate data structures (?) - half done
|
||||
* - free unused memory
|
||||
* - solve Open problems
|
||||
* - smoother scrolling
|
||||
* - seperate view code and document code
|
||||
*
|
||||
* This program is intended as a testbed for winelib as much as
|
||||
* a useful application.
|
||||
*/
|
||||
|
||||
#include <stdio.h>
|
||||
|
@ -22,6 +39,664 @@ extern void DoOpenFile(LPCSTR szFileName);
|
|||
|
||||
NOTEPAD_GLOBALS Globals;
|
||||
|
||||
|
||||
/* Using a pointer to pointer data structure to
|
||||
achieve a little more efficiency. Hopefully
|
||||
it will be worth it, because it complicates the
|
||||
code - mjm 26 Jun 2000 */
|
||||
|
||||
#define BUFFERCHUNKSIZE 0xe0
|
||||
typedef struct TAGLine {
|
||||
LPSTR lpLine;
|
||||
DWORD dwWidth;
|
||||
DWORD dwMaxWidth;
|
||||
} LINE, *LPLINE;
|
||||
|
||||
/* FIXME: make this info into a structure */
|
||||
/* typedef struct tagBUFFER { */
|
||||
DWORD dwVOffset=0;
|
||||
DWORD dwLines=0;
|
||||
DWORD dwMaxLines=0;
|
||||
LPLINE lpBuffer=NULL;
|
||||
DWORD dwXpos=0,dwYpos=0; /* position of caret in char coords */
|
||||
DWORD dwCaretXpos=0,dwCaretYpos=0; /* position of caret in pixel coords */
|
||||
TEXTMETRIC tm; /* textmetric for current font */
|
||||
RECT rectClient; /* client rectangle of the window we're drawing in */
|
||||
/* } BUFFER, *LPBUFFER */
|
||||
|
||||
VOID InitFontInfo(HWND hWnd)
|
||||
{
|
||||
HDC hDC = GetDC(hWnd);
|
||||
|
||||
if(hDC)
|
||||
{
|
||||
GetTextMetrics(hDC, &tm);
|
||||
ReleaseDC(hWnd,hDC);
|
||||
}
|
||||
}
|
||||
|
||||
void InitBuffer(void)
|
||||
{
|
||||
lpBuffer = NULL;
|
||||
dwLines = 0;
|
||||
dwMaxLines = 0;
|
||||
dwXpos=0;
|
||||
dwYpos=0;
|
||||
}
|
||||
|
||||
/* convert x,y character co-ords into x pixel co-ord */
|
||||
DWORD CalcStringWidth(HDC hDC, DWORD x, DWORD y)
|
||||
{
|
||||
DWORD len;
|
||||
SIZE size;
|
||||
|
||||
size.cx = 0;
|
||||
size.cy = 0;
|
||||
|
||||
if(y>dwLines)
|
||||
return size.cx;
|
||||
if(lpBuffer == NULL)
|
||||
return size.cx;
|
||||
if(lpBuffer[y].lpLine == NULL)
|
||||
return size.cx;
|
||||
len = (x<lpBuffer[y].dwWidth) ?
|
||||
x : lpBuffer[y].dwWidth;
|
||||
GetTextExtentPoint(hDC, lpBuffer[y].lpLine, len, &size);
|
||||
|
||||
return size.cx;
|
||||
}
|
||||
|
||||
void CalcCaretPos(HDC hDC, DWORD dwXpos, DWORD dwYpos)
|
||||
{
|
||||
dwCaretXpos = CalcStringWidth(hDC, dwXpos, dwYpos);
|
||||
dwCaretYpos = tm.tmHeight*(dwYpos-dwVOffset);
|
||||
SetCaretPos(dwCaretXpos,dwCaretYpos);
|
||||
}
|
||||
|
||||
DWORD GetLinesPerPage(HWND hWnd)
|
||||
{
|
||||
return (rectClient.bottom/tm.tmHeight); /* round down */
|
||||
}
|
||||
|
||||
/* render one line of text and blank space */
|
||||
void RenderLine(HDC hDC, DWORD lineno)
|
||||
{
|
||||
RECT rect;
|
||||
HBRUSH hPrev;
|
||||
|
||||
if(!hDC)
|
||||
return;
|
||||
|
||||
/* erase the space at the end of a line using a white rectangle */
|
||||
rect.top = tm.tmHeight*(lineno-dwVOffset);
|
||||
rect.bottom = tm.tmHeight*(lineno-dwVOffset+1);
|
||||
|
||||
if(lpBuffer && (lineno<dwLines))
|
||||
rect.left = CalcStringWidth(hDC, lpBuffer[lineno].dwWidth,lineno);
|
||||
else
|
||||
rect.left = 0;
|
||||
rect.right = rectClient.right;
|
||||
|
||||
/* use the white pen so there's not outline */
|
||||
hPrev = SelectObject(hDC, GetStockObject(WHITE_PEN));
|
||||
Rectangle(hDC, rect.left, rect.top, rect.right, rect.bottom);
|
||||
SelectObject(hDC, hPrev);
|
||||
|
||||
if(lpBuffer && lpBuffer[lineno].lpLine)
|
||||
{
|
||||
TextOut(hDC, 0, rect.top, lpBuffer[lineno].lpLine,
|
||||
lpBuffer[lineno].dwWidth);
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* Paint the buffer onto the window.
|
||||
*/
|
||||
void RenderWindow(HDC hDC) {
|
||||
DWORD i;
|
||||
|
||||
if(!hDC)
|
||||
return;
|
||||
|
||||
/* FIXME: render only necessary lines */
|
||||
for(i = dwVOffset; i < (dwVOffset+GetLinesPerPage(0)); i++)
|
||||
{
|
||||
RenderLine(hDC,i);
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* Check that correct buffers exist to access line y pos x
|
||||
* Only manages memory.
|
||||
*
|
||||
* Returns TRUE if the line is accessable
|
||||
* FALSE if there is a problem
|
||||
*/
|
||||
BOOL ValidateLine(DWORD y,DWORD x)
|
||||
{
|
||||
DWORD max;
|
||||
|
||||
/* check to see that the BUFFER has enough lines */
|
||||
max = dwMaxLines;
|
||||
if( (max<=y) || (lpBuffer == NULL))
|
||||
{
|
||||
while(max<=y)
|
||||
max += BUFFERCHUNKSIZE;
|
||||
/* use GlobalAlloc first time round */
|
||||
if(lpBuffer)
|
||||
lpBuffer = (LPLINE) GlobalReAlloc((HGLOBAL)lpBuffer,GMEM_FIXED,
|
||||
max*sizeof(LINE)) ;
|
||||
else
|
||||
lpBuffer = (LPLINE) GlobalAlloc(GMEM_FIXED, max*sizeof(LINE));
|
||||
if(lpBuffer == NULL)
|
||||
return FALSE;
|
||||
ZeroMemory(&lpBuffer[dwLines], sizeof(LINE)*(max-dwLines) );
|
||||
dwMaxLines = max;
|
||||
}
|
||||
|
||||
/* check to see that the LINE is wide enough */
|
||||
max = lpBuffer[y].dwMaxWidth;
|
||||
if( (max <= x) || (lpBuffer[y].lpLine == NULL) )
|
||||
{
|
||||
while(max <= x)
|
||||
max += BUFFERCHUNKSIZE;
|
||||
/* use GlobalAlloc first */
|
||||
if(lpBuffer[y].lpLine)
|
||||
lpBuffer[y].lpLine = (LPSTR)GlobalReAlloc((HGLOBAL)lpBuffer[y].lpLine,
|
||||
GMEM_FIXED, max) ;
|
||||
else
|
||||
lpBuffer[y].lpLine = (LPSTR)GlobalAlloc( GMEM_FIXED, max);
|
||||
if(lpBuffer[y].lpLine == NULL)
|
||||
return FALSE;
|
||||
lpBuffer[y].dwWidth = 0;
|
||||
lpBuffer[y].dwMaxWidth = max;
|
||||
}
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
/* inserts a new line into the buffer */
|
||||
BOOL DoNewLine(HDC hDC)
|
||||
{
|
||||
DWORD i,cnt;
|
||||
LPSTR src,dst;
|
||||
|
||||
/* check to see if we need more memory for the buffer pointers */
|
||||
if(!ValidateLine(dwLines,0))
|
||||
return FALSE;
|
||||
|
||||
/* shuffle up all the lines */
|
||||
for(i=dwLines; i>(dwYpos+1); i--)
|
||||
{
|
||||
lpBuffer[i] = lpBuffer[i-1];
|
||||
RenderLine(hDC,i);
|
||||
}
|
||||
ZeroMemory(&lpBuffer[dwYpos+1],sizeof(LINE));
|
||||
|
||||
/* copy the characters after the carat (if any) to the next line */
|
||||
src = &lpBuffer[dwYpos].lpLine[dwXpos];
|
||||
cnt = lpBuffer[dwYpos].dwWidth-dwXpos;
|
||||
if(!ValidateLine(dwYpos+1,cnt)) /* allocates the buffer */
|
||||
return FALSE; /* FIXME */
|
||||
dst = &lpBuffer[dwYpos+1].lpLine[0];
|
||||
memcpy(dst, src, cnt);
|
||||
lpBuffer[dwYpos+1].dwWidth = cnt;
|
||||
lpBuffer[dwYpos].dwWidth -= cnt;
|
||||
|
||||
/* move the cursor */
|
||||
dwLines++;
|
||||
dwXpos = 0;
|
||||
dwYpos++;
|
||||
|
||||
/* update the window */
|
||||
RenderLine(hDC, dwYpos-1);
|
||||
RenderLine(hDC, dwYpos);
|
||||
CalcCaretPos(hDC, dwXpos, dwYpos);
|
||||
/* FIXME: don't use globals */
|
||||
SetScrollRange(Globals.hMainWnd, SB_VERT, 0, dwLines, TRUE);
|
||||
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
/*
|
||||
* Attempt a basic edit buffer
|
||||
*/
|
||||
BOOL AddCharToBuffer(HDC hDC, char ch)
|
||||
{
|
||||
/* we can use lpBuffer[dwYpos] */
|
||||
if(!ValidateLine(dwYpos,0))
|
||||
return FALSE;
|
||||
|
||||
/* shuffle the rest of the line*/
|
||||
if(!ValidateLine(dwYpos, lpBuffer[dwYpos].dwWidth))
|
||||
return FALSE;
|
||||
lpBuffer[dwYpos].dwWidth++;
|
||||
memmove(&lpBuffer[dwYpos].lpLine[dwXpos+1],
|
||||
&lpBuffer[dwYpos].lpLine[dwXpos],
|
||||
lpBuffer[dwYpos].dwWidth-dwXpos);
|
||||
|
||||
/* add the character */
|
||||
lpBuffer[dwYpos].lpLine[dwXpos] = ch;
|
||||
if(dwLines == 0)
|
||||
dwLines++;
|
||||
dwXpos++;
|
||||
|
||||
/* update the window and cursor position */
|
||||
RenderLine(hDC,dwYpos);
|
||||
CalcCaretPos(hDC,dwXpos,dwYpos);
|
||||
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
|
||||
/* erase a character */
|
||||
BOOL DoBackSpace(HDC hDC)
|
||||
{
|
||||
DWORD i;
|
||||
|
||||
if(lpBuffer == NULL)
|
||||
return FALSE;
|
||||
if(lpBuffer[dwYpos].lpLine && (dwXpos>0))
|
||||
{
|
||||
dwXpos --;
|
||||
/* FIXME: use memmove */
|
||||
for(i=dwXpos; i<(lpBuffer[dwYpos].dwWidth-1); i++)
|
||||
lpBuffer[dwYpos].lpLine[i]=lpBuffer[dwYpos].lpLine[i+1];
|
||||
|
||||
lpBuffer[dwYpos].dwWidth--;
|
||||
RenderLine(hDC, dwYpos);
|
||||
CalcCaretPos(hDC,dwXpos,dwYpos);
|
||||
}
|
||||
else
|
||||
{
|
||||
/* Erase a newline. To do this we join two lines */
|
||||
LPSTR src, dest;
|
||||
DWORD len, oldlen;
|
||||
|
||||
if(dwYpos==0)
|
||||
return FALSE;
|
||||
|
||||
oldlen = lpBuffer[dwYpos-1].dwWidth;
|
||||
if(lpBuffer[dwYpos-1].lpLine&&lpBuffer[dwYpos].lpLine)
|
||||
{
|
||||
/* concatonate to the end of the line above line */
|
||||
src = &lpBuffer[dwYpos].lpLine[0];
|
||||
dest = &lpBuffer[dwYpos-1].lpLine[lpBuffer[dwYpos-1].dwWidth];
|
||||
len = lpBuffer[dwYpos].dwWidth;
|
||||
|
||||
/* check the length of the new line */
|
||||
if(!ValidateLine(dwYpos-1,lpBuffer[dwYpos-1].dwWidth + len))
|
||||
return FALSE;
|
||||
|
||||
memcpy(dest,src,len);
|
||||
lpBuffer[dwYpos-1].dwWidth+=len;
|
||||
GlobalFree( (HGLOBAL)lpBuffer[dwYpos].lpLine);
|
||||
}
|
||||
else if (!lpBuffer[dwYpos-1].lpLine)
|
||||
{
|
||||
lpBuffer[dwYpos-1]=lpBuffer[dwYpos];
|
||||
} /* else both are NULL */
|
||||
RenderLine(hDC,dwYpos-1);
|
||||
|
||||
/* don't zero - it's going to get trashed anyhow */
|
||||
|
||||
/* shuffle up all the lines below this one */
|
||||
for(i=dwYpos; i<(dwLines-1); i++)
|
||||
{
|
||||
lpBuffer[i] = lpBuffer[i+1];
|
||||
RenderLine(hDC,i);
|
||||
}
|
||||
|
||||
/* clear the last line */
|
||||
ZeroMemory(&lpBuffer[dwLines-1],sizeof (LINE));
|
||||
RenderLine(hDC,dwLines-1);
|
||||
dwLines--;
|
||||
|
||||
/* adjust the cursor position to joining point */
|
||||
dwYpos--;
|
||||
dwXpos = oldlen;
|
||||
|
||||
CalcCaretPos(hDC,dwXpos,dwYpos);
|
||||
SetScrollRange(Globals.hMainWnd, SB_VERT, 0, dwLines, TRUE);
|
||||
}
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
/* as used by File->New */
|
||||
void TrashBuffer(void)
|
||||
{
|
||||
DWORD i;
|
||||
|
||||
/* variables belonging to the buffer */
|
||||
if(lpBuffer)
|
||||
{
|
||||
for(i=0; i<dwLines; i++)
|
||||
{
|
||||
if(lpBuffer[i].lpLine)
|
||||
GlobalFree ((HGLOBAL)lpBuffer[i].lpLine);
|
||||
ZeroMemory(&lpBuffer[i],sizeof (LINE));
|
||||
}
|
||||
GlobalFree((HGLOBAL)lpBuffer);
|
||||
lpBuffer=NULL;
|
||||
}
|
||||
dwLines = 0;
|
||||
dwMaxLines = 0;
|
||||
|
||||
/* variables belonging to the view */
|
||||
dwXpos = 0;
|
||||
dwYpos = 0;
|
||||
dwVOffset = 0 ;
|
||||
/* FIXME: don't use globals */
|
||||
SetScrollPos(Globals.hMainWnd, SB_VERT, dwVOffset, FALSE);
|
||||
SetScrollRange(Globals.hMainWnd, SB_VERT, 0, dwLines, TRUE);
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* Add a line to the buffer
|
||||
*/
|
||||
/* FIXME: this breaks lines longer than BUFFERCHUNKSIZE */
|
||||
DWORD CreateLine(
|
||||
LPSTR buffer, /* pointer to buffer with file data */
|
||||
DWORD size, /* number of bytes available in buffer */
|
||||
BOOL nomore)
|
||||
{
|
||||
DWORD i;
|
||||
|
||||
if(size == 0)
|
||||
return 0;
|
||||
|
||||
for(i=0; i<size; i++)
|
||||
{
|
||||
if(buffer[i]==0x0a)
|
||||
{
|
||||
if(ValidateLine(dwLines,i))
|
||||
{
|
||||
memcpy(&lpBuffer[dwLines].lpLine[0],&buffer[0],i);
|
||||
lpBuffer[dwLines].dwWidth = i;
|
||||
dwLines++;
|
||||
}
|
||||
return i+1;
|
||||
}
|
||||
}
|
||||
|
||||
/* make a line of the rest */
|
||||
if( (i == BUFFERCHUNKSIZE) || nomore )
|
||||
{
|
||||
if(ValidateLine(dwLines,i))
|
||||
{
|
||||
memcpy(&lpBuffer[dwLines].lpLine[0],&buffer[0],i);
|
||||
lpBuffer[dwLines].dwWidth = i;
|
||||
dwLines++;
|
||||
}
|
||||
return i;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* This is probably overcomplicated by lpBuffer data structure...
|
||||
* Read blocks from the file, then add each line from the
|
||||
* block to the buffer until there is none left. If all
|
||||
* a slab isn't used, try load some more data from the file.
|
||||
*/
|
||||
void LoadBufferFromFile(LPCSTR szFileName)
|
||||
{
|
||||
HFILE hFile;
|
||||
OFSTRUCT ofs;
|
||||
CHAR *pTemp;
|
||||
DWORD size,i,len,bytes_left,bytes_read;
|
||||
|
||||
hFile = OpenFile(szFileName, &ofs, OF_READ);
|
||||
if(hFile == INVALID_HANDLE_VALUE)
|
||||
return;
|
||||
size = BUFFERCHUNKSIZE;
|
||||
pTemp = (LPSTR) GlobalAlloc(GMEM_FIXED, size);
|
||||
if(!pTemp)
|
||||
return;
|
||||
bytes_read = 1; /* anything non-zero */
|
||||
bytes_left = 0;
|
||||
while(bytes_read)
|
||||
{
|
||||
if(!ReadFile(hFile,
|
||||
&pTemp[bytes_left],
|
||||
size-bytes_left,
|
||||
&bytes_read, NULL))
|
||||
break;
|
||||
bytes_left+=bytes_read;
|
||||
|
||||
/* add strings to buffer */
|
||||
for(i = 0;
|
||||
(i<size) &&
|
||||
(len = CreateLine(&pTemp[i], bytes_left, !bytes_read));
|
||||
i+= len,bytes_left-=len );
|
||||
|
||||
/* move leftover to front of buffer */
|
||||
if(bytes_left)
|
||||
memmove(&pTemp[0],&pTemp[i], bytes_left);
|
||||
}
|
||||
CloseHandle(hFile);
|
||||
MessageBox(Globals.hMainWnd, "Finished", "Info", MB_OK);
|
||||
}
|
||||
|
||||
BOOL DoInput(HDC hDC, WPARAM wParam, LPARAM lParam)
|
||||
{
|
||||
switch(wParam)
|
||||
{
|
||||
case 0x08:
|
||||
return DoBackSpace(hDC);
|
||||
case 0x0d:
|
||||
return DoNewLine(hDC);
|
||||
default:
|
||||
return AddCharToBuffer(hDC,wParam);
|
||||
}
|
||||
}
|
||||
|
||||
BOOL GotoHome(HWND hWnd)
|
||||
{
|
||||
dwXpos = 0;
|
||||
dwYpos = 0;
|
||||
dwVOffset = 0;
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
BOOL GotoEndOfLine(HWND hWnd)
|
||||
{
|
||||
dwXpos = lpBuffer[dwYpos].dwWidth;
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
BOOL GotoDown(HWND hWnd)
|
||||
{
|
||||
if((dwYpos+1) >= dwLines)
|
||||
{
|
||||
return FALSE;
|
||||
}
|
||||
dwYpos++;
|
||||
if (dwXpos>lpBuffer[dwYpos].dwWidth)
|
||||
GotoEndOfLine(hWnd);
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
BOOL GotoUp(HWND hWnd)
|
||||
{
|
||||
if(dwYpos==0)
|
||||
return FALSE;
|
||||
dwYpos--;
|
||||
if (dwXpos>lpBuffer[dwYpos].dwWidth)
|
||||
GotoEndOfLine(hWnd);
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
BOOL GotoLeft(HWND hWnd)
|
||||
{
|
||||
if(dwXpos > 0)
|
||||
{
|
||||
dwXpos--;
|
||||
return TRUE;
|
||||
}
|
||||
if(GotoUp(hWnd))
|
||||
return GotoEndOfLine(hWnd);
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
BOOL GotoRight(HWND hWnd)
|
||||
{
|
||||
if(dwXpos<lpBuffer[dwYpos].dwWidth)
|
||||
{
|
||||
dwXpos++;
|
||||
return TRUE;
|
||||
}
|
||||
if(!GotoDown(hWnd))
|
||||
return FALSE;
|
||||
dwXpos=0;
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
/* check the caret is still on the screen */
|
||||
BOOL ScrollABit(HWND hWnd)
|
||||
{
|
||||
if(dwYpos<dwVOffset)
|
||||
{
|
||||
dwVOffset = dwYpos;
|
||||
return TRUE;
|
||||
}
|
||||
if(dwYpos>(dwVOffset+GetLinesPerPage(hWnd)))
|
||||
{
|
||||
dwVOffset = dwYpos - GetLinesPerPage(hWnd) + 1;
|
||||
return TRUE;
|
||||
}
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
/* FIXME: move the window around so we can still see the caret */
|
||||
VOID DoEdit(HWND hWnd, WPARAM wParam, LPARAM lParam)
|
||||
{
|
||||
HDC hDC;
|
||||
|
||||
if(lpBuffer==NULL)
|
||||
return;
|
||||
switch(wParam)
|
||||
{
|
||||
case VK_HOME: GotoHome(hWnd);
|
||||
break;
|
||||
|
||||
case VK_END: GotoEndOfLine(hWnd);
|
||||
break;
|
||||
|
||||
case VK_LEFT: GotoLeft(hWnd);
|
||||
break;
|
||||
|
||||
case VK_RIGHT: GotoRight(hWnd);
|
||||
break;
|
||||
|
||||
case VK_DOWN: GotoDown(hWnd);
|
||||
break;
|
||||
|
||||
case VK_UP: GotoUp(hWnd);
|
||||
break;
|
||||
|
||||
default:
|
||||
return;
|
||||
}
|
||||
|
||||
hDC = GetDC(hWnd);
|
||||
if(hDC)
|
||||
{
|
||||
CalcCaretPos(hDC, dwXpos, dwYpos);
|
||||
ReleaseDC(hWnd,hDC);
|
||||
}
|
||||
if(ScrollABit(hWnd))
|
||||
InvalidateRect(hWnd, NULL, FALSE);
|
||||
}
|
||||
|
||||
void ButtonDownToCaretPos(HWND hWnd, WPARAM wParam, LPARAM lParam)
|
||||
{
|
||||
DWORD x, y, caretx, carety;
|
||||
BOOL refine_guess = TRUE;
|
||||
HDC hDC;
|
||||
|
||||
x = LOWORD(lParam);
|
||||
y = HIWORD(lParam);
|
||||
|
||||
caretx = x/tm.tmAveCharWidth; /* guess */
|
||||
carety = dwVOffset + y/tm.tmHeight;
|
||||
|
||||
hDC = GetDC(hWnd);
|
||||
|
||||
if(lpBuffer == NULL)
|
||||
{
|
||||
caretx = 0;
|
||||
carety = 0;
|
||||
refine_guess = FALSE;
|
||||
}
|
||||
|
||||
/* if the cursor is past the bottom, put it after the last char */
|
||||
if(refine_guess && (carety>=dwLines) )
|
||||
{
|
||||
carety=dwLines-1;
|
||||
caretx=lpBuffer[carety].dwWidth;
|
||||
refine_guess = FALSE;
|
||||
}
|
||||
|
||||
/* cursor past end of line? */
|
||||
if(refine_guess && (x>CalcStringWidth(hDC,lpBuffer[carety].dwWidth,carety)))
|
||||
{
|
||||
caretx = lpBuffer[carety].dwWidth;
|
||||
refine_guess = FALSE;
|
||||
}
|
||||
|
||||
/* FIXME: doesn't round properly */
|
||||
if(refine_guess)
|
||||
{
|
||||
if(CalcStringWidth(hDC,caretx,carety)<x)
|
||||
{
|
||||
while( (caretx<lpBuffer[carety].dwWidth) &&
|
||||
(CalcStringWidth(hDC,caretx+1,carety)<x))
|
||||
caretx++;
|
||||
}
|
||||
else
|
||||
{
|
||||
while((caretx>0)&&(CalcStringWidth(hDC,caretx-1,carety)>x))
|
||||
caretx--;
|
||||
}
|
||||
}
|
||||
|
||||
/* set the caret's position */
|
||||
dwXpos = caretx;
|
||||
dwYpos = carety;
|
||||
CalcCaretPos(hDC, caretx, carety);
|
||||
ReleaseDC(hWnd,hDC);
|
||||
}
|
||||
|
||||
void DoScroll(HWND hWnd, WPARAM wParam, LPARAM lParam)
|
||||
{
|
||||
DWORD dy = GetLinesPerPage(hWnd);
|
||||
|
||||
switch(wParam) /* vscroll code */
|
||||
{
|
||||
case SB_LINEUP:
|
||||
if(dwVOffset)
|
||||
dwVOffset--;
|
||||
break;
|
||||
case SB_LINEDOWN:
|
||||
if(dwVOffset<dwLines)
|
||||
dwVOffset++;
|
||||
break;
|
||||
case SB_PAGEUP:
|
||||
if( (dy+dwVOffset) > dwLines)
|
||||
dwVOffset = dwLines - 1;
|
||||
break;
|
||||
case SB_PAGEDOWN:
|
||||
if( dy > dwVOffset)
|
||||
dwVOffset=0;
|
||||
break;
|
||||
}
|
||||
/* position scroll */
|
||||
SetScrollPos(hWnd, SB_VERT, dwVOffset, TRUE);
|
||||
}
|
||||
|
||||
/***********************************************************************
|
||||
*
|
||||
* NOTEPAD_MenuCommand
|
||||
|
@ -87,16 +762,57 @@ LRESULT NOTEPAD_WndProc (HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam)
|
|||
switch (msg) {
|
||||
|
||||
case WM_CREATE:
|
||||
GetClientRect(hWnd, &rectClient);
|
||||
InitFontInfo(hWnd);
|
||||
break;
|
||||
|
||||
case WM_SETFOCUS:
|
||||
CreateCaret(Globals.hMainWnd, 0, 1, tm.tmHeight);
|
||||
SetCaretPos(dwCaretXpos, dwCaretYpos);
|
||||
ShowCaret(Globals.hMainWnd);
|
||||
break;
|
||||
|
||||
case WM_KILLFOCUS:
|
||||
DestroyCaret();
|
||||
break;
|
||||
|
||||
case WM_PAINT:
|
||||
GetClientRect(hWnd, &rectClient);
|
||||
hContext = BeginPaint(hWnd, &ps);
|
||||
TextOut(hContext, 1, 1, Globals.Buffer, strlen(Globals.Buffer));
|
||||
RenderWindow(hContext);
|
||||
EndPaint(hWnd, &ps);
|
||||
break;
|
||||
|
||||
case WM_KEYDOWN:
|
||||
DoEdit(hWnd, wParam, lParam);
|
||||
break;
|
||||
|
||||
case WM_CHAR:
|
||||
GetClientRect(hWnd, &rectClient);
|
||||
HideCaret(hWnd);
|
||||
hContext = GetDC(hWnd);
|
||||
DoInput(hContext,wParam,lParam);
|
||||
ReleaseDC(hWnd,hContext);
|
||||
ShowCaret(hWnd);
|
||||
break;
|
||||
|
||||
case WM_LBUTTONDOWN:
|
||||
/* figure out where the mouse was clicked */
|
||||
ButtonDownToCaretPos(hWnd, wParam, lParam);
|
||||
break;
|
||||
|
||||
case WM_VSCROLL:
|
||||
DoScroll(hWnd, wParam, lParam);
|
||||
InvalidateRect(hWnd, NULL, FALSE); /* force a redraw */
|
||||
break;
|
||||
|
||||
case WM_COMMAND:
|
||||
/* FIXME: this is a bit messy */
|
||||
NOTEPAD_MenuCommand(wParam);
|
||||
InvalidateRect(hWnd, NULL, FALSE); /* force a redraw */
|
||||
hContext = GetDC(hWnd);
|
||||
CalcCaretPos(hContext,dwXpos,dwYpos);
|
||||
ReleaseDC(hWnd,hContext);
|
||||
break;
|
||||
|
||||
case WM_DESTROYCLIPBOARD:
|
||||
|
@ -148,6 +864,8 @@ int PASCAL WinMain (HANDLE hInstance, HANDLE prev, LPSTR cmdline, int show)
|
|||
/* Select Language */
|
||||
LANGUAGE_Init();
|
||||
|
||||
/* setup buffer */
|
||||
InitBuffer();
|
||||
|
||||
/* Setup Globals */
|
||||
|
||||
|
@ -244,9 +962,6 @@ int PASCAL WinMain (HANDLE hInstance, HANDLE prev, LPSTR cmdline, int show)
|
|||
|
||||
DragAcceptFiles(Globals.hMainWnd, TRUE);
|
||||
|
||||
MessageBox(Globals.hMainWnd, "BEWARE!\nThis is ALPHA software that may destroy your file system.\nPlease take care.",
|
||||
"A note from the developer...", MB_ICONEXCLAMATION);
|
||||
|
||||
/* now enter mesage loop */
|
||||
|
||||
while (GetMessage (&msg, 0, 0, 0)) {
|
||||
|
|
|
@ -55,6 +55,9 @@ extern NOTEPAD_GLOBALS Globals;
|
|||
|
||||
/* function prototypes */
|
||||
|
||||
void TrashBuffer(void);
|
||||
void LoadBufferFromFile(LPCSTR lpFileName);
|
||||
|
||||
/* class names */
|
||||
|
||||
/* Resource names */
|
||||
|
|
Loading…
Reference in New Issue