edit.c File Reference

#include "config.h"
#include <stdarg.h>
#include <string.h>
#include <stdlib.h>
#include "windef.h"
#include "winbase.h"
#include "wingdi.h"
#include "winuser.h"
#include "imm.h"
#include "usp10.h"
#include "commctrl.h"
#include "uxtheme.h"
#include "vsstyle.h"
#include "wine/unicode.h"
#include "wine/debug.h"
#include "wine/heap.h"

Include dependency graph for edit.c:

Go to the source code of this file.

Classes
struct	tagLINEDEF
struct	EDITSTATE

Macros
#define	BUFLIMIT_INITIAL   30000 /* initial buffer size */
#define	GROWLENGTH   32 /* buffers granularity in bytes: must be power of 2 */
#define	ROUND_TO_GROW(size)   (((size) + (GROWLENGTH - 1)) & ~(GROWLENGTH - 1))
#define	HSCROLL_FRACTION   3 /* scroll window by 1/3 width */
#define	EF_MODIFIED   0x0001 /* text has been modified */
#define	EF_FOCUSED   0x0002 /* we have input focus */
#define	EF_UPDATE   0x0004 /* notify parent of changed state */
#define	EF_VSCROLL_TRACK   0x0008 /* don't SetScrollPos() since we are tracking the thumb */
#define	EF_HSCROLL_TRACK   0x0010 /* don't SetScrollPos() since we are tracking the thumb */
#define	EF_AFTER_WRAP
#define	EF_USE_SOFTBRK   0x0100 /* Enable soft breaks in text. */
#define	EF_DIALOGMODE   0x0200 /* Indicates that we are inside a dialog window */
#define	ID_CB_LISTBOX   1000
#define	SWAP_UINT32(x, y)   do { UINT temp = (UINT)(x); (x) = (UINT)(y); (y) = temp; } while(0)
#define	ORDER_UINT(x, y)   do { if ((UINT)(y) < (UINT)(x)) SWAP_UINT32((x),(y)); } while(0)
#define	EDIT_NOTIFY_PARENT(es, wNotifyCode)

Typedefs
typedef struct tagLINEDEF	LINEDEF

Enumerations
enum	LINE_END {   END_0 = 0, END_WRAP, END_HARD, END_SOFT,   END_RICH, END_0 = 0, END_WRAP, END_HARD,   END_SOFT, END_RICH }

Functions
	WINE_DEFAULT_DEBUG_CHANNEL (edit)
static LRESULT	EDIT_EM_PosFromChar (EDITSTATE *es, INT index, BOOL after_wrap)
static BOOL	EDIT_EM_CanUndo (const EDITSTATE *es)
static void	EDIT_EM_EmptyUndoBuffer (EDITSTATE *es)
static HBRUSH	EDIT_NotifyCtlColor (EDITSTATE *es, HDC hdc)
static UINT	get_text_length (EDITSTATE *es)
static INT	EDIT_WordBreakProc (EDITSTATE *es, LPWSTR s, INT index, INT count, INT action)
static INT	EDIT_CallWordBreakProc (EDITSTATE *es, INT start, INT index, INT count, INT action)
static void	EDIT_InvalidateUniscribeData_linedef (LINEDEF *line_def)
static void	EDIT_InvalidateUniscribeData (EDITSTATE *es)
static SCRIPT_STRING_ANALYSIS	EDIT_UpdateUniscribeData_linedef (EDITSTATE *es, HDC dc, LINEDEF *line_def)
static SCRIPT_STRING_ANALYSIS	EDIT_UpdateUniscribeData (EDITSTATE *es, HDC dc, INT line)
static INT	get_vertical_line_count (EDITSTATE *es)
static void	EDIT_BuildLineDefs_ML (EDITSTATE *es, INT istart, INT iend, INT delta, HRGN hrgn)
static void	EDIT_CalcLineWidth_SL (EDITSTATE *es)
static INT	EDIT_CharFromPos (EDITSTATE *es, INT x, INT y, LPBOOL after_wrap)
static void	EDIT_ConfinePoint (const EDITSTATE *es, LPINT x, LPINT y)
static INT	EDIT_EM_LineFromChar (EDITSTATE *es, INT index)
static INT	EDIT_EM_LineIndex (const EDITSTATE *es, INT line)
static INT	EDIT_EM_LineLength (EDITSTATE *es, INT index)
static void	EDIT_GetLineRect (EDITSTATE *es, INT line, INT scol, INT ecol, LPRECT rc)
static void	text_buffer_changed (EDITSTATE *es)
static void	EDIT_LockBuffer (EDITSTATE *es)
static void	EDIT_UnlockBuffer (EDITSTATE *es, BOOL force)
static BOOL	EDIT_MakeFit (EDITSTATE *es, UINT size)
static BOOL	EDIT_MakeUndoFit (EDITSTATE *es, UINT size)
static void	EDIT_UpdateTextRegion (EDITSTATE *es, HRGN hrgn, BOOL bErase)
static void	EDIT_UpdateText (EDITSTATE *es, const RECT *rc, BOOL bErase)
static void	EDIT_SL_InvalidateText (EDITSTATE *es, INT start, INT end)
static void	EDIT_ML_InvalidateText (EDITSTATE *es, INT start, INT end)
static void	EDIT_InvalidateText (EDITSTATE *es, INT start, INT end)
static BOOL	EDIT_EM_SetSel (EDITSTATE *es, UINT start, UINT end, BOOL after_wrap)
static void	EDIT_UpdateScrollInfo (EDITSTATE *es)
static BOOL	EDIT_EM_LineScroll_internal (EDITSTATE *es, INT dx, INT dy)
static BOOL	EDIT_EM_LineScroll (EDITSTATE *es, INT dx, INT dy)
static LRESULT	EDIT_EM_Scroll (EDITSTATE *es, INT action)
static void	EDIT_SetCaretPos (EDITSTATE *es, INT pos, BOOL after_wrap)
static void	EDIT_EM_ScrollCaret (EDITSTATE *es)
static void	EDIT_MoveBackward (EDITSTATE *es, BOOL extend)
static void	EDIT_MoveDown_ML (EDITSTATE *es, BOOL extend)
static void	EDIT_MoveEnd (EDITSTATE *es, BOOL extend, BOOL ctrl)
static void	EDIT_MoveForward (EDITSTATE *es, BOOL extend)
static void	EDIT_MoveHome (EDITSTATE *es, BOOL extend, BOOL ctrl)
static void	EDIT_MovePageDown_ML (EDITSTATE *es, BOOL extend)
static void	EDIT_MovePageUp_ML (EDITSTATE *es, BOOL extend)
static void	EDIT_MoveUp_ML (EDITSTATE *es, BOOL extend)
static void	EDIT_MoveWordBackward (EDITSTATE *es, BOOL extend)
static void	EDIT_MoveWordForward (EDITSTATE *es, BOOL extend)
static INT	EDIT_PaintText (EDITSTATE *es, HDC dc, INT x, INT y, INT line, INT col, INT count, BOOL rev)
static void	EDIT_PaintLine (EDITSTATE *es, HDC dc, INT line, BOOL rev)
static void	EDIT_AdjustFormatRect (EDITSTATE *es)
static void	EDIT_SetRectNP (EDITSTATE *es, const RECT *rc)
static LRESULT	EDIT_EM_CharFromPos (EDITSTATE *es, INT x, INT y)
static BOOL	EDIT_EM_FmtLines (EDITSTATE *es, BOOL add_eol)
static HLOCAL	EDIT_EM_GetHandle (EDITSTATE *es)
static INT	EDIT_EM_GetLine (EDITSTATE *es, INT line, LPWSTR dst)
static LRESULT	EDIT_EM_GetSel (const EDITSTATE *es, PUINT start, PUINT end)
static void	EDIT_EM_ReplaceSel (EDITSTATE *es, BOOL can_undo, const WCHAR *lpsz_replace, UINT strl, BOOL send_update, BOOL honor_limit)
static void	EDIT_EM_SetHandle (EDITSTATE *es, HLOCAL hloc)
static void	EDIT_EM_SetLimitText (EDITSTATE *es, UINT limit)
static BOOL	is_cjk (UINT charset)
static void	EDIT_EM_SetMargins (EDITSTATE *es, INT action, WORD left, WORD right, BOOL repaint)
static void	EDIT_EM_SetPasswordChar (EDITSTATE *es, WCHAR c)
static BOOL	EDIT_EM_SetTabStops (EDITSTATE *es, INT count, const INT *tabs)
static void	EDIT_EM_SetWordBreakProc (EDITSTATE *es, EDITWORDBREAKPROCW wbp)
static BOOL	EDIT_EM_Undo (EDITSTATE *es)
static BOOL	EDIT_IsInsideDialog (EDITSTATE *es)
static void	EDIT_WM_Paste (EDITSTATE *es)
static void	EDIT_WM_Copy (EDITSTATE *es)
static void	EDIT_WM_Clear (EDITSTATE *es)
static void	EDIT_WM_Cut (EDITSTATE *es)
static LRESULT	EDIT_WM_Char (EDITSTATE *es, WCHAR c)
static void	EDIT_ContextMenuCommand (EDITSTATE *es, UINT id)
static void	EDIT_WM_ContextMenu (EDITSTATE *es, INT x, INT y)
static INT	EDIT_WM_GetText (const EDITSTATE *es, INT count, LPWSTR dst)
static BOOL	EDIT_CheckCombo (EDITSTATE *es, UINT msg, INT key)
static LRESULT	EDIT_WM_KeyDown (EDITSTATE *es, INT key)
static LRESULT	EDIT_WM_KillFocus (HTHEME theme, EDITSTATE *es)
static LRESULT	EDIT_WM_LButtonDblClk (EDITSTATE *es)
static LRESULT	EDIT_WM_LButtonDown (EDITSTATE *es, DWORD keys, INT x, INT y)
static LRESULT	EDIT_WM_LButtonUp (EDITSTATE *es)
static LRESULT	EDIT_WM_MButtonDown (EDITSTATE *es)
static LRESULT	EDIT_WM_MouseMove (EDITSTATE *es, INT x, INT y)
static void	EDIT_WM_Paint (EDITSTATE *es, HDC hdc)
static void	EDIT_WM_NCPaint (HWND hwnd, HRGN region)
static void	EDIT_WM_SetFocus (HTHEME theme, EDITSTATE *es)
static void	EDIT_WM_SetFont (EDITSTATE *es, HFONT font, BOOL redraw)
static void	EDIT_WM_SetText (EDITSTATE *es, LPCWSTR text)
static void	EDIT_WM_Size (EDITSTATE *es, UINT action)
static LRESULT	EDIT_WM_StyleChanged (EDITSTATE *es, WPARAM which, const STYLESTRUCT *style)
static LRESULT	EDIT_WM_SysKeyDown (EDITSTATE *es, INT key, DWORD key_data)
static void	EDIT_WM_Timer (EDITSTATE *es)
static LRESULT	EDIT_WM_HScroll (EDITSTATE *es, INT action, INT pos)
static LRESULT	EDIT_WM_VScroll (EDITSTATE *es, INT action, INT pos)
static LRESULT	EDIT_EM_GetThumb (EDITSTATE *es)
static void	EDIT_GetCompositionStr (HIMC hIMC, LPARAM CompFlag, EDITSTATE *es)
static void	EDIT_GetResultStr (HIMC hIMC, EDITSTATE *es)
static void	EDIT_ImeComposition (HWND hwnd, LPARAM CompFlag, EDITSTATE *es)
static LRESULT	EDIT_WM_NCCreate (HWND hwnd, LPCREATESTRUCTW lpcs)
static LRESULT	EDIT_WM_Create (EDITSTATE *es, const WCHAR *name)
static LRESULT	EDIT_WM_NCDestroy (EDITSTATE *es)
static LRESULT CALLBACK	EDIT_WindowProc (HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
void	EDIT_Register (void)

Macro Definition Documentation

BUFLIMIT_INITIAL

#define BUFLIMIT_INITIAL   30000 /* initial buffer size */

Definition at line 58 of file edit.c.

Referenced by EDIT_WM_NCCreate().

EDIT_NOTIFY_PARENT

#define EDIT_NOTIFY_PARENT	(		es,
			wNotifyCode
	)

Value:

do \
    { /* Notify parent which has created this edit control */ \
        TRACE("notification " #wNotifyCode " sent to hwnd=%p\n", es->hwndParent); \
        SendMessageW(es->hwndParent, WM_COMMAND, \
             MAKEWPARAM(GetWindowLongPtrW((es->hwndSelf),GWLP_ID), wNotifyCode), \
             (LPARAM)(es->hwndSelf)); \
    } while(0)

Definition at line 161 of file edit.c.

Referenced by EDIT_EM_LineScroll_internal(), EDIT_EM_ReplaceSel(), EDIT_EM_Undo(), EDIT_MakeFit(), EDIT_UpdateText(), EDIT_UpdateTextRegion(), EDIT_WM_HScroll(), EDIT_WM_KeyDown(), EDIT_WM_KillFocus(), EDIT_WM_SetFocus(), EDIT_WM_SetText(), and EDIT_WM_VScroll().

EF_AFTER_WRAP

#define EF_AFTER_WRAP

Value:

0x0080  /* the caret is displayed after the last character of a
                       wrapped line, instead of in front of the next character */

Definition at line 71 of file edit.c.

Referenced by EDIT_AdjustFormatRect(), EDIT_EM_ScrollCaret(), EDIT_EM_SetSel(), EDIT_ImeComposition(), EDIT_MoveDown_ML(), EDIT_MoveEnd(), EDIT_MoveHome(), EDIT_MovePageDown_ML(), EDIT_MovePageUp_ML(), EDIT_MoveUp_ML(), EDIT_WM_MouseMove(), EDIT_WM_SetFocus(), and EDIT_WM_SetFont().

EF_DIALOGMODE

#define EF_DIALOGMODE   0x0200 /* Indicates that we are inside a dialog window */

Definition at line 74 of file edit.c.

Referenced by EDIT_IsInsideDialog(), and EDIT_WindowProc().

EF_FOCUSED

#define EF_FOCUSED   0x0002 /* we have input focus */

Definition at line 67 of file edit.c.

Referenced by EDIT_EM_ScrollCaret(), EDIT_PaintLine(), EDIT_WM_ContextMenu(), EDIT_WM_KillFocus(), EDIT_WM_LButtonDown(), EDIT_WM_Paint(), EDIT_WM_SetFocus(), and EDIT_WM_SetFont().

EF_HSCROLL_TRACK

#define EF_HSCROLL_TRACK   0x0010 /* don't SetScrollPos() since we are tracking the thumb */

Definition at line 70 of file edit.c.

Referenced by EDIT_EM_LineScroll_internal(), EDIT_UpdateScrollInfo(), and EDIT_WM_HScroll().

EF_MODIFIED

#define EF_MODIFIED   0x0001 /* text has been modified */

Definition at line 66 of file edit.c.

Referenced by EDIT_EM_ReplaceSel(), EDIT_EM_SetHandle(), EDIT_WindowProc(), and EDIT_WM_SetText().

EF_UPDATE

#define EF_UPDATE   0x0004 /* notify parent of changed state */

Definition at line 68 of file edit.c.

Referenced by EDIT_EM_ReplaceSel(), EDIT_EM_SetHandle(), EDIT_UpdateText(), EDIT_UpdateTextRegion(), EDIT_WindowProc(), and EDIT_WM_SetText().

EF_USE_SOFTBRK

#define EF_USE_SOFTBRK   0x0100 /* Enable soft breaks in text. */

Definition at line 73 of file edit.c.

Referenced by EDIT_EM_FmtLines().

EF_VSCROLL_TRACK

#define EF_VSCROLL_TRACK   0x0008 /* don't SetScrollPos() since we are tracking the thumb */

Definition at line 69 of file edit.c.

Referenced by EDIT_EM_LineScroll_internal(), EDIT_UpdateScrollInfo(), and EDIT_WM_VScroll().

GROWLENGTH

#define GROWLENGTH   32 /* buffers granularity in bytes: must be power of 2 */

Definition at line 59 of file edit.c.

HSCROLL_FRACTION

#define HSCROLL_FRACTION   3 /* scroll window by 1/3 width */

Definition at line 61 of file edit.c.

Referenced by EDIT_EM_ScrollCaret(), and EDIT_WM_HScroll().

ID_CB_LISTBOX

#define ID_CB_LISTBOX   1000

Definition at line 76 of file edit.c.

Referenced by EDIT_WM_NCCreate().

ORDER_UINT

#define ORDER_UINT	(		x,
			y
	)		do { if ((UINT)(y) < (UINT)(x)) SWAP_UINT32((x),(y)); } while(0)

Definition at line 158 of file edit.c.

Referenced by EDIT_EM_GetSel(), EDIT_EM_ReplaceSel(), EDIT_EM_SetSel(), and EDIT_WM_ContextMenu().

ROUND_TO_GROW

#define ROUND_TO_GROW

(

size

)

(((size) + (GROWLENGTH - 1)) & ~(GROWLENGTH - 1))

Definition at line 60 of file edit.c.

Referenced by EDIT_MakeFit(), EDIT_MakeUndoFit(), and EDIT_WM_NCCreate().

SWAP_UINT32

#define SWAP_UINT32	(		x,
			y
	)		do { UINT temp = (UINT)(x); (x) = (UINT)(y); (y) = temp; } while(0)

Definition at line 157 of file edit.c.

Typedef Documentation

LINEDEF

typedef struct tagLINEDEF LINEDEF

Enumeration Type Documentation

LINE_END

enum LINE_END

Enumerator
END_0
END_WRAP
END_HARD
END_SOFT
END_RICH
END_0
END_WRAP
END_HARD
END_SOFT
END_RICH

Definition at line 78 of file edit.c.

{
    END_0 = 0,          /* line ends with terminating '\0' character */
    END_WRAP,           /* line is wrapped */
    END_HARD,           /* line ends with a hard return '\r\n' */
        END_SOFT,               /* line ends with a soft return '\r\r\n' */
        END_RICH                /* line ends with a single '\n' */
} LINE_END;

Function Documentation

EDIT_AdjustFormatRect()

static void EDIT_AdjustFormatRect ( EDITSTATE *  es )

static

Definition at line 2196 of file edit.c.

Referenced by EDIT_EM_SetMargins(), and EDIT_SetRectNP().

{
    RECT ClientRect;

    es->format_rect.right = max(es->format_rect.right, es->format_rect.left + es->char_width);
    if (es->style & ES_MULTILINE)
    {
        INT fw, vlc, max_x_offset, max_y_offset;

        vlc = get_vertical_line_count(es);
        es->format_rect.bottom = es->format_rect.top + vlc * es->line_height;

        /* correct es->x_offset */
        fw = es->format_rect.right - es->format_rect.left;
        max_x_offset = es->text_width - fw;
        if(max_x_offset < 0) max_x_offset = 0;
        if(es->x_offset > max_x_offset)
        es->x_offset = max_x_offset;

        /* correct es->y_offset */
        max_y_offset = es->line_count - vlc;
        if(max_y_offset < 0) max_y_offset = 0;
        if(es->y_offset > max_y_offset)
        es->y_offset = max_y_offset;

        /* force scroll info update */
        EDIT_UpdateScrollInfo(es);
    }
    else
    /* Windows doesn't care to fix text placement for SL controls */
        es->format_rect.bottom = es->format_rect.top + es->line_height;

    /* Always stay within the client area */
    GetClientRect(es->hwndSelf, &ClientRect);
    es->format_rect.bottom = min(es->format_rect.bottom, ClientRect.bottom);

    if ((es->style & ES_MULTILINE) && !(es->style & ES_AUTOHSCROLL))
        EDIT_BuildLineDefs_ML(es, 0, get_text_length(es), 0, NULL);

    EDIT_SetCaretPos(es, es->selection_end, es->flags & EF_AFTER_WRAP);
}

EDIT_BuildLineDefs_ML()

static void EDIT_BuildLineDefs_ML ( EDITSTATE *  es, INT  istart, INT  iend, INT  delta, HRGN  hrgn  )

static

Definition at line 425 of file edit.c.

Referenced by EDIT_AdjustFormatRect(), EDIT_EM_ReplaceSel(), EDIT_EM_SetHandle(), EDIT_EM_SetWordBreakProc(), and EDIT_WM_SetFont().

{
    LPWSTR current_position, cp;
    INT fw;
    LINEDEF *current_line;
    LINEDEF *previous_line;
    LINEDEF *start_line;
    INT line_index = 0, nstart_line, nstart_index;
    INT line_count = es->line_count;
    INT orig_net_length;
    RECT rc;
    INT vlc;

    if (istart == iend && delta == 0)
        return;

    previous_line = NULL;
    current_line = es->first_line_def;

    /* Find starting line. istart must lie inside an existing line or
     * at the end of buffer */
    do {
        if (istart < current_line->index + current_line->length ||
                current_line->ending == END_0)
            break;

        previous_line = current_line;
        current_line = current_line->next;
        line_index++;
    } while (current_line);

    if (!current_line) /* Error occurred start is not inside previous buffer */
    {
        FIXME(" modification occurred outside buffer\n");
        return;
    }

    /* Remember start of modifications in order to calculate update region */
    nstart_line = line_index;
    nstart_index = current_line->index;

    /* We must start to reformat from the previous line since the modifications
     * may have caused the line to wrap upwards. */
    if (!(es->style & ES_AUTOHSCROLL) && line_index > 0)
    {
        line_index--;
        current_line = previous_line;
    }
    start_line = current_line;

    fw = es->format_rect.right - es->format_rect.left;
    current_position = es->text + current_line->index;
    vlc = get_vertical_line_count(es);
    do {
        if (current_line != start_line)
        {
            if (!current_line || current_line->index + delta > current_position - es->text)
            {
                /* The buffer has been expanded, create a new line and
                   insert it into the link list */
                LINEDEF *new_line = heap_alloc_zero(sizeof(*new_line));
                new_line->next = previous_line->next;
                previous_line->next = new_line;
                current_line = new_line;
                es->line_count++;
            }
            else if (current_line->index + delta < current_position - es->text)
            {
                /* The previous line merged with this line so we delete this extra entry */
                previous_line->next = current_line->next;
                heap_free(current_line);
                current_line = previous_line->next;
                es->line_count--;
                continue;
            }
            else /* current_line->index + delta == current_position */
            {
                if (current_position - es->text > iend)
                    break; /* We reached end of line modifications */
                /* else recalculate this line */
            }
        }

        current_line->index = current_position - es->text;
        orig_net_length = current_line->net_length;

        /* Find end of line */
        cp = current_position;
        while (*cp) {
                    if (*cp == '\n') break;
                    if ((*cp == '\r') && (*(cp + 1) == '\n'))
                        break;
                    cp++;
        }

        /* Mark type of line termination */
        if (!(*cp)) {
            current_line->ending = END_0;
            current_line->net_length = strlenW(current_position);
        } else if ((cp > current_position) && (*(cp - 1) == '\r')) {
            current_line->ending = END_SOFT;
            current_line->net_length = cp - current_position - 1;
                } else if (*cp == '\n') {
            current_line->ending = END_RICH;
            current_line->net_length = cp - current_position;
        } else {
            current_line->ending = END_HARD;
            current_line->net_length = cp - current_position;
        }

        if (current_line->net_length)
        {
            const SIZE *sz;
            EDIT_InvalidateUniscribeData_linedef(current_line);
            EDIT_UpdateUniscribeData_linedef(es, NULL, current_line);
            if (current_line->ssa)
            {
                sz = ScriptString_pSize(current_line->ssa);
                /* Calculate line width */
                current_line->width = sz->cx;
            }
            else current_line->width = es->char_width * current_line->net_length;
        }
        else current_line->width = 0;

        /* FIXME: check here for lines that are too wide even in AUTOHSCROLL (> 32767 ???) */

/* Line breaks just look back from the end and find the next break and try that. */

        if (!(es->style & ES_AUTOHSCROLL)) {
           if (current_line->width > fw && fw > es->char_width) {

            INT prev, next;
            int w;
            const SIZE *sz;
            float d;

            prev = current_line->net_length - 1;
            w = current_line->net_length;
            d = (float)current_line->width/(float)fw;
            if (d > 1.2f) d -= 0.2f;
            next = prev/d;
            if (next >= prev) next = prev-1;
            do {
                prev = EDIT_CallWordBreakProc(es, current_position - es->text,
                        next, current_line->net_length, WB_LEFT);
                current_line->net_length = prev;
                EDIT_InvalidateUniscribeData_linedef(current_line);
                EDIT_UpdateUniscribeData_linedef(es, NULL, current_line);
                if (current_line->ssa)
                    sz = ScriptString_pSize(current_line->ssa);
                else sz = 0;
                if (sz)
                    current_line->width = sz->cx;
                else
                    prev = 0;
                next = prev - 1;
            } while (prev && current_line->width > fw);
            current_line->net_length = w;

            if (prev == 0) { /* Didn't find a line break so force a break */
                INT *piDx;
                const INT *count;

                EDIT_InvalidateUniscribeData_linedef(current_line);
                EDIT_UpdateUniscribeData_linedef(es, NULL, current_line);

                if (current_line->ssa)
                {
                    count = ScriptString_pcOutChars(current_line->ssa);
                    piDx = heap_alloc(sizeof(INT) * (*count));
                    ScriptStringGetLogicalWidths(current_line->ssa,piDx);

                    prev = current_line->net_length-1;
                    do {
                        current_line->width -= piDx[prev];
                        prev--;
                    } while ( prev > 0 && current_line->width > fw);
                    if (prev<=0)
                        prev = 1;
                    heap_free(piDx);
                }
                else
                    prev = (fw / es->char_width);
            }

            /* If the first line we are calculating, wrapped before istart, we must
             * adjust istart in order for this to be reflected in the update region. */
            if (current_line->index == nstart_index && istart > current_line->index + prev)
                istart = current_line->index + prev;
            /* else if we are updating the previous line before the first line we
             * are re-calculating and it expanded */
            else if (current_line == start_line &&
                    current_line->index != nstart_index && orig_net_length < prev)
            {
              /* Line expanded due to an upwards line wrap so we must partially include
               * previous line in update region */
                nstart_line = line_index;
                nstart_index = current_line->index;
                istart = current_line->index + orig_net_length;
            }

            current_line->net_length = prev;
            current_line->ending = END_WRAP;

            if (current_line->net_length > 0)
            {
                EDIT_UpdateUniscribeData_linedef(es, NULL, current_line);
                if (current_line->ssa)
                {
                    sz = ScriptString_pSize(current_line->ssa);
                    current_line->width = sz->cx;
                }
                else
                    current_line->width = 0;
            }
            else current_line->width = 0;
            }
            else if (current_line == start_line &&
                             current_line->index != nstart_index &&
                             orig_net_length < current_line->net_length) {
            /* The previous line expanded but it's still not as wide as the client rect */
            /* The expansion is due to an upwards line wrap so we must partially include
               it in the update region */
            nstart_line = line_index;
            nstart_index = current_line->index;
            istart = current_line->index + orig_net_length;
            }
        }


        /* Adjust length to include line termination */
        switch (current_line->ending) {
        case END_SOFT:
            current_line->length = current_line->net_length + 3;
            break;
                case END_RICH:
            current_line->length = current_line->net_length + 1;
            break;
        case END_HARD:
            current_line->length = current_line->net_length + 2;
            break;
        case END_WRAP:
        case END_0:
            current_line->length = current_line->net_length;
            break;
        }
        es->text_width = max(es->text_width, current_line->width);
        current_position += current_line->length;
        previous_line = current_line;

        /* Discard data for non-visible lines. It will be calculated as needed */
        if ((line_index < es->y_offset) || (line_index > es->y_offset + vlc))
            EDIT_InvalidateUniscribeData_linedef(current_line);

        current_line = current_line->next;
        line_index++;
    } while (previous_line->ending != END_0);

    /* Finish adjusting line indexes by delta or remove hanging lines */
    if (previous_line->ending == END_0)
    {
        LINEDEF *pnext = NULL;

        previous_line->next = NULL;
        while (current_line)
        {
            pnext = current_line->next;
            EDIT_InvalidateUniscribeData_linedef(current_line);
            heap_free(current_line);
            current_line = pnext;
            es->line_count--;
        }
    }
    else if (delta != 0)
    {
        while (current_line)
        {
            current_line->index += delta;
            current_line = current_line->next;
        }
    }

    /* Calculate rest of modification rectangle */
    if (hrgn)
    {
        HRGN tmphrgn;
       /*
        * We calculate two rectangles. One for the first line which may have
        * an indent with respect to the format rect. The other is a format-width
        * rectangle that spans the rest of the lines that changed or moved.
        */
        rc.top = es->format_rect.top + nstart_line * es->line_height -
            (es->y_offset * es->line_height); /* Adjust for vertical scrollbar */
        rc.bottom = rc.top + es->line_height;
        if ((es->style & ES_CENTER) || (es->style & ES_RIGHT))
            rc.left = es->format_rect.left;
        else
                        rc.left = LOWORD(EDIT_EM_PosFromChar(es, nstart_index, FALSE));
        rc.right = es->format_rect.right;
        SetRectRgn(hrgn, rc.left, rc.top, rc.right, rc.bottom);

        rc.top = rc.bottom;
        rc.left = es->format_rect.left;
        rc.right = es->format_rect.right;
       /*
        * If lines were added or removed we must re-paint the remainder of the
        * lines since the remaining lines were either shifted up or down.
        */
        if (line_count < es->line_count) /* We added lines */
            rc.bottom = es->line_count * es->line_height;
        else if (line_count > es->line_count) /* We removed lines */
            rc.bottom = line_count * es->line_height;
        else
            rc.bottom = line_index * es->line_height;
        rc.bottom += es->format_rect.top;
        rc.bottom -= (es->y_offset * es->line_height); /* Adjust for vertical scrollbar */
        tmphrgn = CreateRectRgn(rc.left, rc.top, rc.right, rc.bottom);
        CombineRgn(hrgn, hrgn, tmphrgn, RGN_OR);
        DeleteObject(tmphrgn);
    }
}

EDIT_CalcLineWidth_SL()

static void EDIT_CalcLineWidth_SL ( EDITSTATE *  es )

static

Definition at line 753 of file edit.c.

Referenced by EDIT_EM_ReplaceSel(), and EDIT_WM_SetFont().

{
    EDIT_UpdateUniscribeData(es, NULL, 0);
    if (es->ssa)
    {
        const SIZE *size;
        size = ScriptString_pSize(es->ssa);
        es->text_width = size->cx;
    }
    else
        es->text_width = 0;
}

EDIT_CallWordBreakProc()

static INT EDIT_CallWordBreakProc ( EDITSTATE *  es, INT  start, INT  index, INT  count, INT  action  )

static

Definition at line 290 of file edit.c.

Referenced by EDIT_BuildLineDefs_ML(), EDIT_MoveWordBackward(), EDIT_MoveWordForward(), and EDIT_WM_LButtonDblClk().

{
    INT ret;

    if (es->word_break_proc)
        ret = es->word_break_proc(es->text + start, index, count, action);
    else
        ret = EDIT_WordBreakProc(es, es->text, index + start, count + start, action) - start;

    return ret;
}

EDIT_CharFromPos()

static INT EDIT_CharFromPos ( EDITSTATE *  es, INT  x, INT  y, LPBOOL  after_wrap  )

static

Definition at line 776 of file edit.c.

Referenced by EDIT_EM_CharFromPos(), EDIT_MoveDown_ML(), EDIT_MoveEnd(), EDIT_MoveHome(), EDIT_MovePageDown_ML(), EDIT_MovePageUp_ML(), EDIT_MoveUp_ML(), EDIT_WM_LButtonDown(), and EDIT_WM_MouseMove().

{
    INT index;

    if (es->style & ES_MULTILINE) {
        int trailing;
        INT line = (y - es->format_rect.top) / es->line_height + es->y_offset;
        INT line_index = 0;
        LINEDEF *line_def = es->first_line_def;
        EDIT_UpdateUniscribeData(es, NULL, line);
        while ((line > 0) && line_def->next) {
            line_index += line_def->length;
            line_def = line_def->next;
            line--;
        }

        x += es->x_offset - es->format_rect.left;
        if (es->style & ES_RIGHT)
            x -= (es->format_rect.right - es->format_rect.left) - line_def->width;
        else if (es->style & ES_CENTER)
            x -= ((es->format_rect.right - es->format_rect.left) - line_def->width) / 2;
        if (x >= line_def->width) {
            if (after_wrap)
                *after_wrap = (line_def->ending == END_WRAP);
            return line_index + line_def->net_length;
        }
        if (x <= 0 || !line_def->ssa) {
            if (after_wrap)
                *after_wrap = FALSE;
            return line_index;
        }

        ScriptStringXtoCP(line_def->ssa, x , &index, &trailing);
        if (trailing) index++;
        index += line_index;
        if (after_wrap)
            *after_wrap = ((index == line_index + line_def->net_length) &&
                            (line_def->ending == END_WRAP));
    } else {
        INT xoff = 0;
        INT trailing;
        if (after_wrap)
            *after_wrap = FALSE;
        x -= es->format_rect.left;
        if (!x)
            return es->x_offset;

        if (!es->x_offset)
        {
            INT indent = (es->format_rect.right - es->format_rect.left) - es->text_width;
            if (es->style & ES_RIGHT)
                x -= indent;
            else if (es->style & ES_CENTER)
                x -= indent / 2;
        }

        EDIT_UpdateUniscribeData(es, NULL, 0);
        if (es->x_offset)
        {
            if (es->ssa)
            {
                if (es->x_offset>= get_text_length(es))
                {
                    const SIZE *size;
                    size = ScriptString_pSize(es->ssa);
                    xoff = size->cx;
                }
                ScriptStringCPtoX(es->ssa, es->x_offset, FALSE, &xoff);
            }
            else
                xoff = 0;
        }
        if (x < 0)
        {
            if (x + xoff > 0 || !es->ssa)
            {
                ScriptStringXtoCP(es->ssa, x+xoff, &index, &trailing);
                if (trailing) index++;
            }
            else
                index = 0;
        }
        else
        {
            if (x)
            {
                const SIZE *size = NULL;
                if (es->ssa)
                    size = ScriptString_pSize(es->ssa);
                if (!size)
                    index = 0;
                else if (x > size->cx)
                    index = get_text_length(es);
                else if (es->ssa)
                {
                    ScriptStringXtoCP(es->ssa, x+xoff, &index, &trailing);
                    if (trailing) index++;
                }
                else
                    index = 0;
            }
            else
                index = es->x_offset;
        }
    }
    return index;
}

EDIT_CheckCombo()

static BOOL EDIT_CheckCombo ( EDITSTATE *  es, UINT  msg, INT  key  )

static

Definition at line 3185 of file edit.c.

Referenced by EDIT_WM_KeyDown(), and EDIT_WM_SysKeyDown().

{
    HWND hLBox = es->hwndListBox;
    HWND hCombo;
    BOOL bDropped;
    int  nEUI;

    if (!hLBox)
        return FALSE;

    hCombo   = GetParent(es->hwndSelf);
    bDropped = TRUE;
    nEUI     = 0;

    TRACE("[%p]: handling msg %x (%x)\n", es->hwndSelf, msg, key);

    if (key == VK_UP || key == VK_DOWN)
    {
        if (SendMessageW(hCombo, CB_GETEXTENDEDUI, 0, 0))
            nEUI = 1;

        if (msg == WM_KEYDOWN || nEUI)
            bDropped = (BOOL)SendMessageW(hCombo, CB_GETDROPPEDSTATE, 0, 0);
    }

    switch (msg)
    {
    case WM_KEYDOWN:
        if (!bDropped && nEUI && (key == VK_UP || key == VK_DOWN))
        {
            /* make sure ComboLBox pops up */
            SendMessageW(hCombo, CB_SETEXTENDEDUI, FALSE, 0);
            key = VK_F4;
            nEUI = 2;
        }

        SendMessageW(hLBox, WM_KEYDOWN, key, 0);
        break;

    case WM_SYSKEYDOWN: /* Handle Alt+up/down arrows */
        if (nEUI)
           SendMessageW(hCombo, CB_SHOWDROPDOWN, !bDropped, 0);
        else
           SendMessageW(hLBox, WM_KEYDOWN, VK_F4, 0);
        break;
    }

    if (nEUI == 2)
        SendMessageW(hCombo, CB_SETEXTENDEDUI, TRUE, 0);

    return TRUE;
}

EDIT_ConfinePoint()

static void EDIT_ConfinePoint ( const EDITSTATE *  es, LPINT  x, LPINT  y  )

static

Definition at line 893 of file edit.c.

Referenced by EDIT_WM_LButtonDown(), and EDIT_WM_MouseMove().

{
    *x = min(max(*x, es->format_rect.left), es->format_rect.right - 1);
    *y = min(max(*y, es->format_rect.top), es->format_rect.bottom - 1);
}

EDIT_ContextMenuCommand()

static void EDIT_ContextMenuCommand ( EDITSTATE *  es, UINT  id  )

static

Definition at line 3071 of file edit.c.

Referenced by EDIT_WM_ContextMenu().

{
    switch (id) {
        case EM_UNDO:
                        SendMessageW(es->hwndSelf, WM_UNDO, 0, 0);
            break;
        case WM_CUT:
                        SendMessageW(es->hwndSelf, WM_CUT, 0, 0);
            break;
        case WM_COPY:
                        SendMessageW(es->hwndSelf, WM_COPY, 0, 0);
            break;
        case WM_PASTE:
                        SendMessageW(es->hwndSelf, WM_PASTE, 0, 0);
            break;
        case WM_CLEAR:
                        SendMessageW(es->hwndSelf, WM_CLEAR, 0, 0);
            break;
        case EM_SETSEL:
                        SendMessageW(es->hwndSelf, EM_SETSEL, 0, -1);
            break;
        default:
            ERR("unknown menu item, please report\n");
            break;
    }
}

EDIT_EM_CanUndo()

static BOOL EDIT_EM_CanUndo ( const EDITSTATE *  es )

inlinestatic

Definition at line 177 of file edit.c.

Referenced by EDIT_WindowProc(), EDIT_WM_ContextMenu(), and EDIT_WM_SysKeyDown().

{
    return (es->undo_insert_count || strlenW(es->undo_text));
}

EDIT_EM_CharFromPos()

static LRESULT EDIT_EM_CharFromPos ( EDITSTATE *  es, INT  x, INT  y  )

static

Definition at line 2291 of file edit.c.

Referenced by EDIT_WindowProc().

{
    POINT pt;
    RECT rc;
    INT index;

    pt.x = x;
    pt.y = y;
    GetClientRect(es->hwndSelf, &rc);
    if (!PtInRect(&rc, pt))
        return -1;

    index = EDIT_CharFromPos(es, x, y, NULL);
    return MAKELONG(index, EDIT_EM_LineFromChar(es, index));
}

EDIT_EM_EmptyUndoBuffer()

static void EDIT_EM_EmptyUndoBuffer ( EDITSTATE *  es )

inlinestatic

Definition at line 188 of file edit.c.

Referenced by EDIT_EM_ReplaceSel(), EDIT_EM_SetHandle(), EDIT_EM_Undo(), EDIT_WindowProc(), and EDIT_WM_Create().

{
    es->undo_insert_count = 0;
    *es->undo_text = '\0';
}

EDIT_EM_FmtLines()

static BOOL EDIT_EM_FmtLines ( EDITSTATE *  es, BOOL  add_eol  )

static

Definition at line 2319 of file edit.c.

Referenced by EDIT_WindowProc().

{
    es->flags &= ~EF_USE_SOFTBRK;
    if (add_eol) {
        es->flags |= EF_USE_SOFTBRK;
        FIXME("soft break enabled, not implemented\n");
    }
    return add_eol;
}

EDIT_EM_GetHandle()

static HLOCAL EDIT_EM_GetHandle ( EDITSTATE *  es )

static

Definition at line 2341 of file edit.c.

Referenced by EDIT_WindowProc().

{
    if (!(es->style & ES_MULTILINE))
        return 0;

    EDIT_UnlockBuffer(es, TRUE);

    /* The text buffer handle belongs to the app */
    es->hlocapp = es->hloc32W;

    TRACE("Returning %p, LocalSize() = %ld\n", es->hlocapp, LocalSize(es->hlocapp));
    return es->hlocapp;
}

EDIT_EM_GetLine()

static INT EDIT_EM_GetLine ( EDITSTATE *  es, INT  line, LPWSTR  dst  )

static

Definition at line 2361 of file edit.c.

Referenced by EDIT_WindowProc().

{
    INT line_len, dst_len;
    LPWSTR src;
    INT i;

    if (es->style & ES_MULTILINE)
    {
        if (line >= es->line_count)
            return 0;
    }
    else
        line = 0;

    i = EDIT_EM_LineIndex(es, line);
    src = es->text + i;
    line_len = EDIT_EM_LineLength(es, i);
    dst_len = *(WORD *)dst;

    if (dst_len <= line_len)
    {
        memcpy(dst, src, dst_len * sizeof(WCHAR));
        return dst_len;
    }
    else /* Append 0 if enough space */
    {
        memcpy(dst, src, line_len * sizeof(WCHAR));
        dst[line_len] = 0;
        return line_len;
    }
}

EDIT_EM_GetSel()

static LRESULT EDIT_EM_GetSel ( const EDITSTATE *  es, PUINT  start, PUINT  end  )

static

Definition at line 2399 of file edit.c.

Referenced by EDIT_WindowProc().

{
    UINT s = es->selection_start;
    UINT e = es->selection_end;

    ORDER_UINT(s, e);
    if (start)
        *start = s;
    if (end)
        *end = e;
    return MAKELONG(s, e);
}

EDIT_EM_GetThumb()

static LRESULT EDIT_EM_GetThumb ( EDITSTATE *  es )

static

Definition at line 4165 of file edit.c.

Referenced by EDIT_WindowProc().

{
    return MAKELONG(EDIT_WM_VScroll(es, EM_GETTHUMB, 0),
                        EDIT_WM_HScroll(es, EM_GETTHUMB, 0));
}

EDIT_EM_LineFromChar()

static INT EDIT_EM_LineFromChar ( EDITSTATE *  es, INT  index  )

static

Definition at line 905 of file edit.c.

Referenced by EDIT_EM_CharFromPos(), EDIT_EM_LineLength(), EDIT_EM_PosFromChar(), EDIT_EM_ScrollCaret(), EDIT_ML_InvalidateText(), EDIT_MoveWordBackward(), EDIT_MoveWordForward(), EDIT_WindowProc(), and EDIT_WM_LButtonDblClk().

{
    INT line;
    LINEDEF *line_def;

    if (!(es->style & ES_MULTILINE))
        return 0;
    if (index > (INT)get_text_length(es))
        return es->line_count - 1;
    if (index == -1)
        index = min(es->selection_start, es->selection_end);

    line = 0;
    line_def = es->first_line_def;
    index -= line_def->length;
    while ((index >= 0) && line_def->next) {
        line++;
        line_def = line_def->next;
        index -= line_def->length;
    }
    return line;
}

EDIT_EM_LineIndex()

static INT EDIT_EM_LineIndex ( const EDITSTATE *  es, INT  line  )

static

Definition at line 934 of file edit.c.

Referenced by EDIT_EM_GetLine(), EDIT_EM_LineLength(), EDIT_EM_PosFromChar(), EDIT_ML_InvalidateText(), EDIT_MoveWordBackward(), EDIT_MoveWordForward(), EDIT_PaintLine(), EDIT_PaintText(), EDIT_WindowProc(), and EDIT_WM_LButtonDblClk().

{
    INT line_index;
    const LINEDEF *line_def;

    if (!(es->style & ES_MULTILINE))
        return 0;
    if (line >= es->line_count)
        return -1;

    line_index = 0;
    line_def = es->first_line_def;
    if (line == -1) {
        INT index = es->selection_end - line_def->length;
        while ((index >= 0) && line_def->next) {
            line_index += line_def->length;
            line_def = line_def->next;
            index -= line_def->length;
        }
    } else {
        while (line > 0) {
            line_index += line_def->length;
            line_def = line_def->next;
            line--;
        }
    }
    return line_index;
}

EDIT_EM_LineLength()

static INT EDIT_EM_LineLength ( EDITSTATE *  es, INT  index  )

static

Definition at line 969 of file edit.c.

Referenced by EDIT_EM_GetLine(), EDIT_ML_InvalidateText(), EDIT_MoveWordBackward(), EDIT_MoveWordForward(), EDIT_PaintLine(), EDIT_WindowProc(), and EDIT_WM_LButtonDblClk().

{
    LINEDEF *line_def;

    if (!(es->style & ES_MULTILINE))
        return get_text_length(es);

    if (index == -1) {
        /* get the number of remaining non-selected chars of selected lines */
        INT32 l; /* line number */
        INT32 li; /* index of first char in line */
        INT32 count;
        l = EDIT_EM_LineFromChar(es, es->selection_start);
        /* # chars before start of selection area */
        count = es->selection_start - EDIT_EM_LineIndex(es, l);
        l = EDIT_EM_LineFromChar(es, es->selection_end);
        /* # chars after end of selection */
        li = EDIT_EM_LineIndex(es, l);
        count += li + EDIT_EM_LineLength(es, li) - es->selection_end;
        return count;
    }
    line_def = es->first_line_def;
    index -= line_def->length;
    while ((index >= 0) && line_def->next) {
        line_def = line_def->next;
        index -= line_def->length;
    }
    return line_def->net_length;
}

EDIT_EM_LineScroll()

static BOOL EDIT_EM_LineScroll ( EDITSTATE *  es, INT  dx, INT  dy  )

static

Definition at line 1641 of file edit.c.

Referenced by EDIT_EM_Scroll(), EDIT_WindowProc(), and EDIT_WM_VScroll().

{
    if (!(es->style & ES_MULTILINE))
        return FALSE;

    dx *= es->char_width;
    return EDIT_EM_LineScroll_internal(es, dx, dy);
}

EDIT_EM_LineScroll_internal()

static BOOL EDIT_EM_LineScroll_internal ( EDITSTATE *  es, INT  dx, INT  dy  )

static

Definition at line 1585 of file edit.c.

Referenced by EDIT_EM_LineScroll(), EDIT_EM_ScrollCaret(), and EDIT_WM_HScroll().

{
    INT nyoff;
    INT x_offset_in_pixels;
    INT lines_per_page = (es->format_rect.bottom - es->format_rect.top) /
                  es->line_height;

    if (es->style & ES_MULTILINE)
    {
        x_offset_in_pixels = es->x_offset;
    }
    else
    {
        dy = 0;
        x_offset_in_pixels = (short)LOWORD(EDIT_EM_PosFromChar(es, es->x_offset, FALSE));
    }

    if (-dx > x_offset_in_pixels)
        dx = -x_offset_in_pixels;
    if (dx > es->text_width - x_offset_in_pixels)
        dx = es->text_width - x_offset_in_pixels;
    nyoff = max(0, es->y_offset + dy);
    if (nyoff >= es->line_count - lines_per_page)
        nyoff = max(0, es->line_count - lines_per_page);
    dy = (es->y_offset - nyoff) * es->line_height;
    if (dx || dy) {
        RECT rc1;
        RECT rc;

        es->y_offset = nyoff;
        if(es->style & ES_MULTILINE)
            es->x_offset += dx;
        else
            es->x_offset += dx / es->char_width;

        GetClientRect(es->hwndSelf, &rc1);
        IntersectRect(&rc, &rc1, &es->format_rect);
        ScrollWindowEx(es->hwndSelf, -dx, dy,
                NULL, &rc, NULL, NULL, SW_INVALIDATE);
        /* force scroll info update */
        EDIT_UpdateScrollInfo(es);
    }
    if (dx && !(es->flags & EF_HSCROLL_TRACK))
        EDIT_NOTIFY_PARENT(es, EN_HSCROLL);
    if (dy && !(es->flags & EF_VSCROLL_TRACK))
        EDIT_NOTIFY_PARENT(es, EN_VSCROLL);
    return TRUE;
}

EDIT_EM_PosFromChar()

static LRESULT EDIT_EM_PosFromChar ( EDITSTATE *  es, INT  index, BOOL  after_wrap  )

static

Definition at line 1005 of file edit.c.

Referenced by EDIT_BuildLineDefs_ML(), EDIT_EM_LineScroll_internal(), EDIT_EM_ScrollCaret(), EDIT_GetLineRect(), EDIT_MoveDown_ML(), EDIT_MoveEnd(), EDIT_MoveHome(), EDIT_MovePageDown_ML(), EDIT_MovePageUp_ML(), EDIT_MoveUp_ML(), EDIT_PaintLine(), EDIT_SetCaretPos(), and EDIT_WindowProc().

{
    INT len = get_text_length(es);
    INT l;
    INT li;
    INT x = 0;
    INT y = 0;
    INT w;
    INT lw;
    LINEDEF *line_def;

    index = min(index, len);
    if (es->style & ES_MULTILINE) {
        l = EDIT_EM_LineFromChar(es, index);
        EDIT_UpdateUniscribeData(es, NULL, l);

        y = (l - es->y_offset) * es->line_height;
        li = EDIT_EM_LineIndex(es, l);
        if (after_wrap && (li == index) && l) {
            INT l2 = l - 1;
            line_def = es->first_line_def;
            while (l2) {
                line_def = line_def->next;
                l2--;
            }
            if (line_def->ending == END_WRAP) {
                l--;
                y -= es->line_height;
                li = EDIT_EM_LineIndex(es, l);
            }
        }

        line_def = es->first_line_def;
        while (line_def->index != li)
            line_def = line_def->next;

        lw = line_def->width;
        w = es->format_rect.right - es->format_rect.left;
        if (line_def->ssa)
        {
            ScriptStringCPtoX(line_def->ssa, (index - 1) - li, TRUE, &x);
            x -= es->x_offset;
        }
        else
            x = es->x_offset;

        if (es->style & ES_RIGHT)
            x = w - (lw - x);
        else if (es->style & ES_CENTER)
            x += (w - lw) / 2;
    } else {
        INT xoff = 0;
        INT xi = 0;
        EDIT_UpdateUniscribeData(es, NULL, 0);
        if (es->x_offset)
        {
            if (es->ssa)
            {
                if (es->x_offset >= get_text_length(es))
                {
                    int leftover = es->x_offset - get_text_length(es);
                    if (es->ssa)
                    {
                        const SIZE *size;
                        size = ScriptString_pSize(es->ssa);
                        xoff = size->cx;
                    }
                    else
                        xoff = 0;
                    xoff += es->char_width * leftover;
                }
                else
                    ScriptStringCPtoX(es->ssa, es->x_offset, FALSE, &xoff);
            }
            else
                xoff = 0;
        }
        if (index)
        {
            if (index >= get_text_length(es))
            {
                if (es->ssa)
                {
                    const SIZE *size;
                    size = ScriptString_pSize(es->ssa);
                    xi = size->cx;
                }
                else
                    xi = 0;
            }
            else if (es->ssa)
                ScriptStringCPtoX(es->ssa, index, FALSE, &xi);
            else
                xi = 0;
        }
        x = xi - xoff;

        if (index >= es->x_offset) {
            if (!es->x_offset && (es->style & (ES_RIGHT | ES_CENTER)))
            {
                w = es->format_rect.right - es->format_rect.left;
                if (w > es->text_width)
                {
                    if (es->style & ES_RIGHT)
                        x += w - es->text_width;
                    else if (es->style & ES_CENTER)
                        x += (w - es->text_width) / 2;
                }
            }
        }
        y = 0;
    }
    x += es->format_rect.left;
    y += es->format_rect.top;
    return MAKELONG((INT16)x, (INT16)y);
}

EDIT_EM_ReplaceSel()

static void EDIT_EM_ReplaceSel ( EDITSTATE *  es, BOOL  can_undo, const WCHAR *  lpsz_replace, UINT  strl, BOOL  send_update, BOOL  honor_limit  )

static

Definition at line 2420 of file edit.c.

Referenced by EDIT_EM_Undo(), EDIT_GetCompositionStr(), EDIT_GetResultStr(), EDIT_ImeComposition(), EDIT_WindowProc(), EDIT_WM_Char(), EDIT_WM_Clear(), EDIT_WM_Create(), EDIT_WM_Paste(), and EDIT_WM_SetText().

{
    UINT tl = get_text_length(es);
    UINT utl;
    UINT s;
    UINT e;
    UINT i;
    UINT size;
    LPWSTR p;
    HRGN hrgn = 0;
    LPWSTR buf = NULL;
    UINT bufl;

    TRACE("%s, can_undo %d, send_update %d\n",
        debugstr_wn(lpsz_replace, strl), can_undo, send_update);

    s = es->selection_start;
    e = es->selection_end;

    EDIT_InvalidateUniscribeData(es);
    if ((s == e) && !strl)
        return;

    ORDER_UINT(s, e);

    size = tl - (e - s) + strl;
    if (!size)
        es->text_width = 0;

    /* Issue the EN_MAXTEXT notification and continue with replacing text
         * so that buffer limit is honored. */
    if ((honor_limit) && (size > es->buffer_limit)) {
        EDIT_NOTIFY_PARENT(es, EN_MAXTEXT);
        /* Buffer limit can be smaller than the actual length of text in combobox */
        if (es->buffer_limit < (tl - (e-s)))
            strl = 0;
        else
            strl = min(strl, es->buffer_limit - (tl - (e-s)));
    }

    if (!EDIT_MakeFit(es, tl - (e - s) + strl))
        return;

    if (e != s) {
        /* there is something to be deleted */
        TRACE("deleting stuff.\n");
        bufl = e - s;
        buf = heap_alloc((bufl + 1) * sizeof(WCHAR));
        if (!buf) return;
        memcpy(buf, es->text + s, bufl * sizeof(WCHAR));
        buf[bufl] = 0; /* ensure 0 termination */
        /* now delete */
        strcpyW(es->text + s, es->text + e);
                text_buffer_changed(es);
    }
    if (strl) {
        /* there is an insertion */
        tl = get_text_length(es);
        TRACE("inserting stuff (tl %d, strl %d, selstart %d (%s), text %s)\n", tl, strl, s, debugstr_w(es->text + s), debugstr_w(es->text));
        for (p = es->text + tl ; p >= es->text + s ; p--)
            p[strl] = p[0];
        for (i = 0 , p = es->text + s ; i < strl ; i++)
            p[i] = lpsz_replace[i];
        if(es->style & ES_UPPERCASE)
            CharUpperBuffW(p, strl);
        else if(es->style & ES_LOWERCASE)
            CharLowerBuffW(p, strl);
                text_buffer_changed(es);
    }
    if (es->style & ES_MULTILINE)
    {
        INT st = min(es->selection_start, es->selection_end);
        INT vlc = get_vertical_line_count(es);

        hrgn = CreateRectRgn(0, 0, 0, 0);
        EDIT_BuildLineDefs_ML(es, st, st + strl,
                strl - abs(es->selection_end - es->selection_start), hrgn);
        /* if text is too long undo all changes */
        if (honor_limit && !(es->style & ES_AUTOVSCROLL) && (es->line_count > vlc)) {
            if (strl)
                strcpyW(es->text + e, es->text + e + strl);
            if (e != s)
                for (i = 0 , p = es->text ; i < e - s ; i++)
                    p[i + s] = buf[i];
                        text_buffer_changed(es);
            EDIT_BuildLineDefs_ML(es, s, e,
                abs(es->selection_end - es->selection_start) - strl, hrgn);
            strl = 0;
            e = s;
            hrgn = CreateRectRgn(0, 0, 0, 0);
            EDIT_NOTIFY_PARENT(es, EN_MAXTEXT);
        }
    }
    else {
        INT fw = es->format_rect.right - es->format_rect.left;
        EDIT_InvalidateUniscribeData(es);
        EDIT_CalcLineWidth_SL(es);
        /* remove chars that don't fit */
        if (honor_limit && !(es->style & ES_AUTOHSCROLL) && (es->text_width > fw)) {
            while ((es->text_width > fw) && s + strl >= s) {
                strcpyW(es->text + s + strl - 1, es->text + s + strl);
                strl--;
                es->text_length = -1;
                EDIT_InvalidateUniscribeData(es);
                EDIT_CalcLineWidth_SL(es);
            }
                        text_buffer_changed(es);
            EDIT_NOTIFY_PARENT(es, EN_MAXTEXT);
        }
    }

    if (e != s) {
        if (can_undo) {
            utl = strlenW(es->undo_text);
            if (!es->undo_insert_count && (*es->undo_text && (s == es->undo_position))) {
                /* undo-buffer is extended to the right */
                EDIT_MakeUndoFit(es, utl + e - s);
                memcpy(es->undo_text + utl, buf, (e - s)*sizeof(WCHAR));
                (es->undo_text + utl)[e - s] = 0; /* ensure 0 termination */
            } else if (!es->undo_insert_count && (*es->undo_text && (e == es->undo_position))) {
                /* undo-buffer is extended to the left */
                EDIT_MakeUndoFit(es, utl + e - s);
                for (p = es->undo_text + utl ; p >= es->undo_text ; p--)
                    p[e - s] = p[0];
                for (i = 0 , p = es->undo_text ; i < e - s ; i++)
                    p[i] = buf[i];
                es->undo_position = s;
            } else {
                /* new undo-buffer */
                EDIT_MakeUndoFit(es, e - s);
                memcpy(es->undo_text, buf, (e - s)*sizeof(WCHAR));
                es->undo_text[e - s] = 0; /* ensure 0 termination */
                es->undo_position = s;
            }
            /* any deletion makes the old insertion-undo invalid */
            es->undo_insert_count = 0;
        } else
            EDIT_EM_EmptyUndoBuffer(es);
    }
    if (strl) {
        if (can_undo) {
            if ((s == es->undo_position) ||
                ((es->undo_insert_count) &&
                (s == es->undo_position + es->undo_insert_count)))
                /*
                 * insertion is new and at delete position or
                 * an extension to either left or right
                 */
                es->undo_insert_count += strl;
            else {
                /* new insertion undo */
                es->undo_position = s;
                es->undo_insert_count = strl;
                /* new insertion makes old delete-buffer invalid */
                *es->undo_text = '\0';
            }
        } else
            EDIT_EM_EmptyUndoBuffer(es);
    }

    heap_free(buf);

    s += strl;

    /* If text has been deleted and we're right or center aligned then scroll rightward */
    if (es->style & (ES_RIGHT | ES_CENTER))
    {
        INT delta = strl - abs(es->selection_end - es->selection_start);

        if (delta < 0 && es->x_offset)
        {
            if (abs(delta) > es->x_offset)
                es->x_offset = 0;
            else
                es->x_offset += delta;
        }
    }

    EDIT_EM_SetSel(es, s, s, FALSE);
    es->flags |= EF_MODIFIED;
    if (send_update) es->flags |= EF_UPDATE;
    if (hrgn)
    {
        EDIT_UpdateTextRegion(es, hrgn, TRUE);
        DeleteObject(hrgn);
    }
    else
            EDIT_UpdateText(es, NULL, TRUE);

    EDIT_EM_ScrollCaret(es);

    /* force scroll info update */
    EDIT_UpdateScrollInfo(es);


        if(send_update || (es->flags & EF_UPDATE))
    {
        es->flags &= ~EF_UPDATE;
        EDIT_NOTIFY_PARENT(es, EN_CHANGE);
    }
    EDIT_InvalidateUniscribeData(es);
}

EDIT_EM_Scroll()

static LRESULT EDIT_EM_Scroll ( EDITSTATE *  es, INT  action  )

static

Definition at line 1656 of file edit.c.

Referenced by EDIT_WindowProc(), and EDIT_WM_VScroll().

{
    INT dy;

    if (!(es->style & ES_MULTILINE))
        return (LRESULT)FALSE;

    dy = 0;

    switch (action) {
    case SB_LINEUP:
        if (es->y_offset)
            dy = -1;
        break;
    case SB_LINEDOWN:
        if (es->y_offset < es->line_count - 1)
            dy = 1;
        break;
    case SB_PAGEUP:
        if (es->y_offset)
            dy = -(es->format_rect.bottom - es->format_rect.top) / es->line_height;
        break;
    case SB_PAGEDOWN:
        if (es->y_offset < es->line_count - 1)
            dy = (es->format_rect.bottom - es->format_rect.top) / es->line_height;
        break;
    default:
        return (LRESULT)FALSE;
    }
    if (dy) {
        INT vlc = get_vertical_line_count(es);
        /* check if we are going to move too far */
        if(es->y_offset + dy > es->line_count - vlc)
        dy = max(es->line_count - vlc, 0) - es->y_offset;

        /* Notification is done in EDIT_EM_LineScroll */
        if(dy) {
        EDIT_EM_LineScroll(es, 0, dy);
        return MAKELONG(dy, TRUE);
        }

    }
    return (LRESULT)FALSE;
}

EDIT_EM_ScrollCaret()

static void EDIT_EM_ScrollCaret ( EDITSTATE *  es )

static

Definition at line 1721 of file edit.c.

Referenced by EDIT_EM_ReplaceSel(), EDIT_EM_SetHandle(), EDIT_EM_Undo(), EDIT_MoveBackward(), EDIT_MoveDown_ML(), EDIT_MoveEnd(), EDIT_MoveForward(), EDIT_MoveHome(), EDIT_MovePageDown_ML(), EDIT_MovePageUp_ML(), EDIT_MoveUp_ML(), EDIT_MoveWordBackward(), EDIT_MoveWordForward(), EDIT_WindowProc(), EDIT_WM_Create(), EDIT_WM_LButtonDblClk(), EDIT_WM_LButtonDown(), and EDIT_WM_SetText().

{
    if (es->style & ES_MULTILINE) {
        INT l;
        INT vlc;
        INT ww;
        INT cw = es->char_width;
        INT x;
        INT dy = 0;
        INT dx = 0;

        l = EDIT_EM_LineFromChar(es, es->selection_end);
        x = (short)LOWORD(EDIT_EM_PosFromChar(es, es->selection_end, es->flags & EF_AFTER_WRAP));
        vlc = get_vertical_line_count(es);
        if (l >= es->y_offset + vlc)
            dy = l - vlc + 1 - es->y_offset;
        if (l < es->y_offset)
            dy = l - es->y_offset;
        ww = es->format_rect.right - es->format_rect.left;
        if (x < es->format_rect.left)
            dx = x - es->format_rect.left - ww / HSCROLL_FRACTION / cw * cw;
        if (x > es->format_rect.right)
            dx = x - es->format_rect.left - (HSCROLL_FRACTION - 1) * ww / HSCROLL_FRACTION / cw * cw;
        if (dy || dx || (es->y_offset && (es->line_count - es->y_offset < vlc)))
        {
            /* check if we are going to move too far */
            if(es->x_offset + dx + ww > es->text_width)
            dx = es->text_width - ww - es->x_offset;
            if(dx || dy || (es->y_offset && (es->line_count - es->y_offset < vlc)))
            EDIT_EM_LineScroll_internal(es, dx, dy);
        }
    } else {
        INT x;
        INT goal;
        INT format_width;

        x = (short)LOWORD(EDIT_EM_PosFromChar(es, es->selection_end, FALSE));
        format_width = es->format_rect.right - es->format_rect.left;
        if (x < es->format_rect.left) {
            goal = es->format_rect.left + format_width / HSCROLL_FRACTION;
            do {
                es->x_offset--;
                x = (short)LOWORD(EDIT_EM_PosFromChar(es, es->selection_end, FALSE));
            } while ((x < goal) && es->x_offset);
            /* FIXME: use ScrollWindow() somehow to improve performance */
            EDIT_UpdateText(es, NULL, TRUE);
        } else if (x > es->format_rect.right) {
            INT x_last;
            INT len = get_text_length(es);
            goal = es->format_rect.right - format_width / HSCROLL_FRACTION;
            do {
                es->x_offset++;
                x = (short)LOWORD(EDIT_EM_PosFromChar(es, es->selection_end, FALSE));
                x_last = (short)LOWORD(EDIT_EM_PosFromChar(es, len, FALSE));
            } while ((x > goal) && (x_last > es->format_rect.right));
            /* FIXME: use ScrollWindow() somehow to improve performance */
            EDIT_UpdateText(es, NULL, TRUE);
        }
    }

    if(es->flags & EF_FOCUSED)
    EDIT_SetCaretPos(es, es->selection_end, es->flags & EF_AFTER_WRAP);
}

EDIT_EM_SetHandle()

static void EDIT_EM_SetHandle ( EDITSTATE *  es, HLOCAL  hloc  )

static

Definition at line 2632 of file edit.c.

Referenced by EDIT_WindowProc().

{
    if (!(es->style & ES_MULTILINE))
        return;

    if (!hloc)
        return;

    EDIT_UnlockBuffer(es, TRUE);

    es->hloc32W = hloc;
    es->buffer_size = LocalSize(es->hloc32W)/sizeof(WCHAR) - 1;

    /* The text buffer handle belongs to the control */
    es->hlocapp = NULL;

    EDIT_LockBuffer(es);
    text_buffer_changed(es);

    es->x_offset = es->y_offset = 0;
    es->selection_start = es->selection_end = 0;
    EDIT_EM_EmptyUndoBuffer(es);
    es->flags &= ~EF_MODIFIED;
    es->flags &= ~EF_UPDATE;
    EDIT_BuildLineDefs_ML(es, 0, get_text_length(es), 0, NULL);
    EDIT_UpdateText(es, NULL, TRUE);
    EDIT_EM_ScrollCaret(es);
    /* force scroll info update */
    EDIT_UpdateScrollInfo(es);
}

EDIT_EM_SetLimitText()

static void EDIT_EM_SetLimitText ( EDITSTATE *  es, UINT  limit  )

static

Definition at line 2671 of file edit.c.

Referenced by EDIT_WindowProc().

{
    if (!limit) limit = ~0u;
    if (!(es->style & ES_MULTILINE)) limit = min(limit, 0x7ffffffe);
    es->buffer_limit = limit;
}

EDIT_EM_SetMargins()

static void EDIT_EM_SetMargins ( EDITSTATE *  es, INT  action, WORD  left, WORD  right, BOOL  repaint  )

static

Definition at line 2707 of file edit.c.

Referenced by EDIT_WindowProc(), and EDIT_WM_SetFont().

{
    TEXTMETRICW tm;
    INT default_left_margin  = 0; /* in pixels */
    INT default_right_margin = 0; /* in pixels */

        /* Set the default margins depending on the font */
        if (es->font && (left == EC_USEFONTINFO || right == EC_USEFONTINFO)) {
            HDC dc = GetDC(es->hwndSelf);
            HFONT old_font = SelectObject(dc, es->font);
            LONG width = GdiGetCharDimensions(dc, &tm, NULL);
            RECT rc;

            /* The default margins are only non zero for TrueType or Vector fonts */
            if (tm.tmPitchAndFamily & ( TMPF_VECTOR | TMPF_TRUETYPE )) {
                if (!is_cjk(tm.tmCharSet)) {
                    default_left_margin = width / 2;
                    default_right_margin = width / 2;

                    GetClientRect(es->hwndSelf, &rc);
                    if (rc.right - rc.left < (width / 2 + width) * 2 &&
                        (width >= 28 || !IsRectEmpty(&rc)) ) {
                        default_left_margin = es->left_margin;
                        default_right_margin = es->right_margin;
                    }
                } else {
                    /* FIXME: figure out the CJK values. They are not affected by the client rect. */
                    default_left_margin = width / 2;
                    default_right_margin = width / 2;
                }
            }
            SelectObject(dc, old_font);
            ReleaseDC(es->hwndSelf, dc);
        }

    if (action & EC_LEFTMARGIN) {
        es->format_rect.left -= es->left_margin;
        if (left != EC_USEFONTINFO)
            es->left_margin = left;
        else
            es->left_margin = default_left_margin;
        es->format_rect.left += es->left_margin;
    }

    if (action & EC_RIGHTMARGIN) {
        es->format_rect.right += es->right_margin;
        if (right != EC_USEFONTINFO)
            es->right_margin = right;
        else
            es->right_margin = default_right_margin;
        es->format_rect.right -= es->right_margin;
    }

    if (action & (EC_LEFTMARGIN | EC_RIGHTMARGIN)) {
        EDIT_AdjustFormatRect(es);
        if (repaint) EDIT_UpdateText(es, NULL, TRUE);
    }

    TRACE("left=%d, right=%d\n", es->left_margin, es->right_margin);
}

EDIT_EM_SetPasswordChar()

static void EDIT_EM_SetPasswordChar ( EDITSTATE *  es, WCHAR  c  )

static

Definition at line 2775 of file edit.c.

Referenced by EDIT_WindowProc().

{
    LONG style;

    if (es->style & ES_MULTILINE)
        return;

    if (es->password_char == c)
        return;

        style = GetWindowLongW( es->hwndSelf, GWL_STYLE );
    es->password_char = c;
    if (c) {
            SetWindowLongW( es->hwndSelf, GWL_STYLE, style | ES_PASSWORD );
            es->style |= ES_PASSWORD;
    } else {
            SetWindowLongW( es->hwndSelf, GWL_STYLE, style & ~ES_PASSWORD );
            es->style &= ~ES_PASSWORD;
    }
    EDIT_InvalidateUniscribeData(es);
    EDIT_UpdateText(es, NULL, TRUE);
}

EDIT_EM_SetSel()

static BOOL EDIT_EM_SetSel ( EDITSTATE *  es, UINT  start, UINT  end, BOOL  after_wrap  )

static

Definition at line 1473 of file edit.c.

Referenced by EDIT_EM_ReplaceSel(), EDIT_EM_Undo(), EDIT_MoveBackward(), EDIT_MoveDown_ML(), EDIT_MoveEnd(), EDIT_MoveForward(), EDIT_MoveHome(), EDIT_MovePageDown_ML(), EDIT_MovePageUp_ML(), EDIT_MoveUp_ML(), EDIT_MoveWordBackward(), EDIT_MoveWordForward(), EDIT_WindowProc(), EDIT_WM_Char(), EDIT_WM_KeyDown(), EDIT_WM_LButtonDblClk(), EDIT_WM_LButtonDown(), EDIT_WM_MouseMove(), and EDIT_WM_SetText().

{
    UINT old_start = es->selection_start;
    UINT old_end = es->selection_end;
    UINT len = get_text_length(es);

        if (start == old_start && end == old_end)
            return FALSE;

    if (start == (UINT)-1) {
        start = es->selection_end;
        end = es->selection_end;
    } else {
        start = min(start, len);
        end = min(end, len);
    }
    es->selection_start = start;
    es->selection_end = end;
    if (after_wrap)
        es->flags |= EF_AFTER_WRAP;
    else
        es->flags &= ~EF_AFTER_WRAP;
    /* Compute the necessary invalidation region. */
    /* Note that we don't need to invalidate regions which have
     * "never" been selected, or those which are "still" selected.
     * In fact, every time we hit a selection boundary, we can
     * *toggle* whether we need to invalidate.  Thus we can optimize by
     * *sorting* the interval endpoints.  Let's assume that we sort them
     * in this order:
     *        start <= end <= old_start <= old_end
     * Knuth 5.3.1 (p 183) assures us that this can be done optimally
     * in 5 comparisons; i.e. it is impossible to do better than the
     * following: */
        ORDER_UINT(end, old_end);
        ORDER_UINT(start, old_start);
        ORDER_UINT(old_start, old_end);
        ORDER_UINT(start, end);
    /* Note that at this point 'end' and 'old_start' are not in order, but
     * start is definitely the min. and old_end is definitely the max. */
    if (end != old_start)
        {
/*
 * One can also do
 *          ORDER_UINT32(end, old_start);
 *          EDIT_InvalidateText(es, start, end);
 *          EDIT_InvalidateText(es, old_start, old_end);
 * in place of the following if statement.
 * (That would complete the optimal five-comparison four-element sort.)
 */
            if (old_start > end )
            {
                EDIT_InvalidateText(es, start, end);
                EDIT_InvalidateText(es, old_start, old_end);
            }
            else
            {
                EDIT_InvalidateText(es, start, old_start);
                EDIT_InvalidateText(es, end, old_end);
            }
    }
        else EDIT_InvalidateText(es, start, old_end);

        return TRUE;
}

EDIT_EM_SetTabStops()

static BOOL EDIT_EM_SetTabStops ( EDITSTATE *  es, INT  count, const INT *  tabs  )

static

Definition at line 2804 of file edit.c.

Referenced by EDIT_WindowProc().

{
    if (!(es->style & ES_MULTILINE))
        return FALSE;
        heap_free(es->tabs);
    es->tabs_count = count;
    if (!count)
        es->tabs = NULL;
    else {
        es->tabs = heap_alloc(count * sizeof(INT));
        memcpy(es->tabs, tabs, count * sizeof(INT));
    }
    EDIT_InvalidateUniscribeData(es);
    return TRUE;
}

EDIT_EM_SetWordBreakProc()

static void EDIT_EM_SetWordBreakProc ( EDITSTATE *  es, EDITWORDBREAKPROCW  wbp  )

static

Definition at line 2826 of file edit.c.

Referenced by EDIT_WindowProc().

{
    if (es->word_break_proc == wbp)
        return;

    es->word_break_proc = wbp;

    if ((es->style & ES_MULTILINE) && !(es->style & ES_AUTOHSCROLL)) {
        EDIT_BuildLineDefs_ML(es, 0, get_text_length(es), 0, NULL);
        EDIT_UpdateText(es, NULL, TRUE);
    }
}

EDIT_EM_Undo()

static BOOL EDIT_EM_Undo ( EDITSTATE *  es )

static

Definition at line 2845 of file edit.c.

Referenced by EDIT_WindowProc(), and EDIT_WM_SysKeyDown().

{
    INT ulength;
    LPWSTR utext;

    /* As per MSDN spec, for a single-line edit control,
       the return value is always TRUE */
    if( es->style & ES_READONLY )
            return !(es->style & ES_MULTILINE);

    ulength = strlenW(es->undo_text);

    utext = heap_alloc((ulength + 1) * sizeof(WCHAR));

    strcpyW(utext, es->undo_text);

    TRACE("before UNDO:insertion length = %d, deletion buffer = %s\n",
             es->undo_insert_count, debugstr_w(utext));

    EDIT_EM_SetSel(es, es->undo_position, es->undo_position + es->undo_insert_count, FALSE);
    EDIT_EM_EmptyUndoBuffer(es);
    EDIT_EM_ReplaceSel(es, TRUE, utext, ulength, TRUE, TRUE);
    EDIT_EM_SetSel(es, es->undo_position, es->undo_position + es->undo_insert_count, FALSE);
        /* send the notification after the selection start and end are set */
        EDIT_NOTIFY_PARENT(es, EN_CHANGE);
    EDIT_EM_ScrollCaret(es);
    heap_free(utext);

    TRACE("after UNDO:insertion length = %d, deletion buffer = %s\n",
            es->undo_insert_count, debugstr_w(es->undo_text));
    return TRUE;
}

EDIT_GetCompositionStr()

static void EDIT_GetCompositionStr ( HIMC  hIMC, LPARAM  CompFlag, EDITSTATE *  es  )

static

Definition at line 4177 of file edit.c.

Referenced by EDIT_ImeComposition().

{
    LONG buflen;
    LPWSTR lpCompStr;
    LPSTR lpCompStrAttr = NULL;
    DWORD dwBufLenAttr;

    buflen = ImmGetCompositionStringW(hIMC, GCS_COMPSTR, NULL, 0);

    if (buflen < 0)
    {
        return;
    }

    lpCompStr = heap_alloc(buflen);
    if (!lpCompStr)
    {
        ERR("Unable to allocate IME CompositionString\n");
        return;
    }

    if (buflen)
        ImmGetCompositionStringW(hIMC, GCS_COMPSTR, lpCompStr, buflen);

    if (CompFlag & GCS_COMPATTR)
    {
        /*
         * We do not use the attributes yet. it would tell us what characters
         * are in transition and which are converted or decided upon
         */
        dwBufLenAttr = ImmGetCompositionStringW(hIMC, GCS_COMPATTR, NULL, 0);
        if (dwBufLenAttr)
        {
            dwBufLenAttr ++;
            lpCompStrAttr = heap_alloc(dwBufLenAttr + 1);
            if (!lpCompStrAttr)
            {
                ERR("Unable to allocate IME Attribute String\n");
                heap_free(lpCompStr);
                return;
            }
            ImmGetCompositionStringW(hIMC,GCS_COMPATTR, lpCompStrAttr,
                    dwBufLenAttr);
            lpCompStrAttr[dwBufLenAttr] = 0;
        }
    }

    /* check for change in composition start */
    if (es->selection_end < es->composition_start)
        es->composition_start = es->selection_end;

    /* replace existing selection string */
    es->selection_start = es->composition_start;

    if (es->composition_len > 0)
        es->selection_end = es->composition_start + es->composition_len;
    else
        es->selection_end = es->selection_start;

    EDIT_EM_ReplaceSel(es, FALSE, lpCompStr, buflen / sizeof(WCHAR), TRUE, TRUE);
    es->composition_len = abs(es->composition_start - es->selection_end);

    es->selection_start = es->composition_start;
    es->selection_end = es->selection_start + es->composition_len;

    heap_free(lpCompStrAttr);
    heap_free(lpCompStr);
}

EDIT_GetLineRect()

static void EDIT_GetLineRect ( EDITSTATE *  es, INT  line, INT  scol, INT  ecol, LPRECT  rc  )

static

Definition at line 1131 of file edit.c.

Referenced by EDIT_ML_InvalidateText(), EDIT_SL_InvalidateText(), and EDIT_WM_Paint().

{
    SCRIPT_STRING_ANALYSIS ssa;
    INT line_index = 0;
    INT pt1, pt2, pt3;

    if (es->style & ES_MULTILINE)
    {
        const LINEDEF *line_def = NULL;
        rc->top = es->format_rect.top + (line - es->y_offset) * es->line_height;
        if (line >= es->line_count)
            return;

        line_def = es->first_line_def;
        if (line == -1) {
            INT index = es->selection_end - line_def->length;
            while ((index >= 0) && line_def->next) {
                line_index += line_def->length;
                line_def = line_def->next;
                index -= line_def->length;
            }
        } else {
            while (line > 0) {
                line_index += line_def->length;
                line_def = line_def->next;
                line--;
            }
        }
        ssa = line_def->ssa;
    }
    else
    {
        line_index = 0;
        rc->top = es->format_rect.top;
        ssa = es->ssa;
    }

    rc->bottom = rc->top + es->line_height;
    pt1 = (scol == 0) ? es->format_rect.left : (short)LOWORD(EDIT_EM_PosFromChar(es, line_index + scol, TRUE));
    pt2 = (ecol == -1) ? es->format_rect.right : (short)LOWORD(EDIT_EM_PosFromChar(es, line_index + ecol, TRUE));
    if (ssa)
    {
        ScriptStringCPtoX(ssa, scol, FALSE, &pt3);
        pt3+=es->format_rect.left;
    }
    else pt3 = pt1;
    rc->right = max(max(pt1 , pt2),pt3);
    rc->left = min(min(pt1, pt2),pt3);
}

EDIT_GetResultStr()

static void EDIT_GetResultStr ( HIMC  hIMC, EDITSTATE *  es  )

static

Definition at line 4246 of file edit.c.

Referenced by EDIT_ImeComposition().

{
    LONG buflen;
    LPWSTR lpResultStr;

    buflen = ImmGetCompositionStringW(hIMC, GCS_RESULTSTR, NULL, 0);
    if (buflen <= 0)
    {
        return;
    }

    lpResultStr = heap_alloc(buflen);
    if (!lpResultStr)
    {
        ERR("Unable to alloc buffer for IME string\n");
        return;
    }

    ImmGetCompositionStringW(hIMC, GCS_RESULTSTR, lpResultStr, buflen);

    /* check for change in composition start */
    if (es->selection_end < es->composition_start)
        es->composition_start = es->selection_end;

    es->selection_start = es->composition_start;
    es->selection_end = es->composition_start + es->composition_len;
    EDIT_EM_ReplaceSel(es, TRUE, lpResultStr, buflen / sizeof(WCHAR), TRUE, TRUE);
    es->composition_start = es->selection_end;
    es->composition_len = 0;

    heap_free(lpResultStr);
}

EDIT_ImeComposition()

static void EDIT_ImeComposition ( HWND  hwnd, LPARAM  CompFlag, EDITSTATE *  es  )

static

Definition at line 4279 of file edit.c.

Referenced by EDIT_WindowProc().

{
    HIMC hIMC;
    int cursor;

    if (es->composition_len == 0 && es->selection_start != es->selection_end)
    {
        EDIT_EM_ReplaceSel(es, TRUE, NULL, 0, TRUE, TRUE);
        es->composition_start = es->selection_end;
    }

    hIMC = ImmGetContext(hwnd);
    if (!hIMC)
        return;

    if (CompFlag & GCS_RESULTSTR)
    {
        EDIT_GetResultStr(hIMC, es);
        cursor = 0;
    }
    else
    {
        if (CompFlag & GCS_COMPSTR)
            EDIT_GetCompositionStr(hIMC, CompFlag, es);
        cursor = ImmGetCompositionStringW(hIMC, GCS_CURSORPOS, 0, 0);
    }
    ImmReleaseContext(hwnd, hIMC);
    EDIT_SetCaretPos(es, es->selection_start + cursor, es->flags & EF_AFTER_WRAP);
}

EDIT_InvalidateText()

static void EDIT_InvalidateText ( EDITSTATE *  es, INT  start, INT  end  )

static

Definition at line 1443 of file edit.c.

Referenced by EDIT_EM_SetSel(), EDIT_WM_KillFocus(), and EDIT_WM_SetFocus().

{
    if (end == start)
        return;

    if (end == -1)
        end = get_text_length(es);

    if (end < start) {
        INT tmp = start;
        start = end;
        end = tmp;
    }

    if (es->style & ES_MULTILINE)
        EDIT_ML_InvalidateText(es, start, end);
    else
        EDIT_SL_InvalidateText(es, start, end);
}

EDIT_InvalidateUniscribeData()

static void EDIT_InvalidateUniscribeData ( EDITSTATE *  es )

inlinestatic

Definition at line 311 of file edit.c.

Referenced by EDIT_EM_ReplaceSel(), EDIT_EM_SetPasswordChar(), EDIT_EM_SetTabStops(), EDIT_WM_NCCreate(), EDIT_WM_NCDestroy(), EDIT_WM_Paint(), EDIT_WM_SetFont(), EDIT_WM_SetText(), and text_buffer_changed().

{
    LINEDEF *line_def = es->first_line_def;
    while (line_def)
    {
        EDIT_InvalidateUniscribeData_linedef(line_def);
        line_def = line_def->next;
    }
    if (es->ssa)
    {
        ScriptStringFree(&es->ssa);
        es->ssa = NULL;
    }
}

EDIT_InvalidateUniscribeData_linedef()

static void EDIT_InvalidateUniscribeData_linedef ( LINEDEF *  line_def )

inlinestatic

Definition at line 302 of file edit.c.

Referenced by EDIT_BuildLineDefs_ML(), and EDIT_InvalidateUniscribeData().

{
    if (line_def->ssa)
    {
        ScriptStringFree(&line_def->ssa);
        line_def->ssa = NULL;
    }
}

EDIT_IsInsideDialog()

static BOOL EDIT_IsInsideDialog ( EDITSTATE *  es )

inlinestatic

Definition at line 2886 of file edit.c.

Referenced by EDIT_WM_Char(), and EDIT_WM_KeyDown().

{
    return (es->flags & EF_DIALOGMODE);
}

EDIT_LockBuffer()

static void EDIT_LockBuffer ( EDITSTATE *  es )

static

Definition at line 1195 of file edit.c.

Referenced by EDIT_EM_SetHandle(), EDIT_MakeFit(), and EDIT_WindowProc().

{
    if (!es->text)
    {
        if (!es->hloc32W)
            return;

        es->text = LocalLock(es->hloc32W);
    }

    es->lock_count++;
}

EDIT_MakeFit()

static BOOL EDIT_MakeFit ( EDITSTATE *  es, UINT  size  )

static

Definition at line 1260 of file edit.c.

Referenced by EDIT_EM_ReplaceSel().

{
    HLOCAL hNew32W;

    if (size <= es->buffer_size)
        return TRUE;

    TRACE("trying to ReAlloc to %d+1 characters\n", size);

        /* Force edit to unlock its buffer. es->text now NULL */
    EDIT_UnlockBuffer(es, TRUE);

    if (es->hloc32W) {
        UINT alloc_size = ROUND_TO_GROW((size + 1) * sizeof(WCHAR));
        if ((hNew32W = LocalReAlloc(es->hloc32W, alloc_size, LMEM_MOVEABLE | LMEM_ZEROINIT))) {
        TRACE("Old 32 bit handle %p, new handle %p\n", es->hloc32W, hNew32W);
        es->hloc32W = hNew32W;
        es->buffer_size = LocalSize(hNew32W)/sizeof(WCHAR) - 1;
        }
    }

    EDIT_LockBuffer(es);

    if (es->buffer_size < size) {
        WARN("FAILED !  We now have %d+1\n", es->buffer_size);
        EDIT_NOTIFY_PARENT(es, EN_ERRSPACE);
        return FALSE;
    } else {
        TRACE("We now have %d+1\n", es->buffer_size);
        return TRUE;
    }
}

EDIT_MakeUndoFit()

static BOOL EDIT_MakeUndoFit ( EDITSTATE *  es, UINT  size  )

static

Definition at line 1301 of file edit.c.

Referenced by EDIT_EM_ReplaceSel().

{
    UINT alloc_size;

    if (size <= es->undo_buffer_size)
        return TRUE;

    TRACE("trying to ReAlloc to %d+1\n", size);

    alloc_size = ROUND_TO_GROW((size + 1) * sizeof(WCHAR));
    if ((es->undo_text = HeapReAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, es->undo_text, alloc_size))) {
        es->undo_buffer_size = alloc_size/sizeof(WCHAR) - 1;
        return TRUE;
    }
    else
    {
        WARN("FAILED !  We now have %d+1\n", es->undo_buffer_size);
        return FALSE;
    }
}

EDIT_ML_InvalidateText()

static void EDIT_ML_InvalidateText ( EDITSTATE *  es, INT  start, INT  end  )

static

Definition at line 1378 of file edit.c.

Referenced by EDIT_InvalidateText().

{
    INT vlc = get_vertical_line_count(es);
    INT sl = EDIT_EM_LineFromChar(es, start);
    INT el = EDIT_EM_LineFromChar(es, end);
    INT sc;
    INT ec;
    RECT rc1;
    RECT rcWnd;
    RECT rcLine;
    RECT rcUpdate;
    INT l;

    if ((el < es->y_offset) || (sl > es->y_offset + vlc))
        return;

    sc = start - EDIT_EM_LineIndex(es, sl);
    ec = end - EDIT_EM_LineIndex(es, el);
    if (sl < es->y_offset) {
        sl = es->y_offset;
        sc = 0;
    }
    if (el > es->y_offset + vlc) {
        el = es->y_offset + vlc;
        ec = EDIT_EM_LineLength(es, EDIT_EM_LineIndex(es, el));
    }
    GetClientRect(es->hwndSelf, &rc1);
    IntersectRect(&rcWnd, &rc1, &es->format_rect);
    if (sl == el) {
        EDIT_GetLineRect(es, sl, sc, ec, &rcLine);
        if (IntersectRect(&rcUpdate, &rcWnd, &rcLine))
            EDIT_UpdateText(es, &rcUpdate, TRUE);
    } else {
        EDIT_GetLineRect(es, sl, sc,
                EDIT_EM_LineLength(es,
                    EDIT_EM_LineIndex(es, sl)),
                &rcLine);
        if (IntersectRect(&rcUpdate, &rcWnd, &rcLine))
            EDIT_UpdateText(es, &rcUpdate, TRUE);
        for (l = sl + 1 ; l < el ; l++) {
            EDIT_GetLineRect(es, l, 0,
                EDIT_EM_LineLength(es,
                    EDIT_EM_LineIndex(es, l)),
                &rcLine);
            if (IntersectRect(&rcUpdate, &rcWnd, &rcLine))
                EDIT_UpdateText(es, &rcUpdate, TRUE);
        }
        EDIT_GetLineRect(es, el, 0, ec, &rcLine);
        if (IntersectRect(&rcUpdate, &rcWnd, &rcLine))
            EDIT_UpdateText(es, &rcUpdate, TRUE);
    }
}

EDIT_MoveBackward()

static void EDIT_MoveBackward ( EDITSTATE *  es, BOOL  extend  )

static

Definition at line 1791 of file edit.c.

Referenced by EDIT_WM_Char(), EDIT_WM_KeyDown(), and EDIT_WM_Timer().

{
    INT e = es->selection_end;

    if (e) {
        e--;
        if ((es->style & ES_MULTILINE) && e &&
                (es->text[e - 1] == '\r') && (es->text[e] == '\n')) {
            e--;
            if (e && (es->text[e - 1] == '\r'))
                e--;
        }
    }
    EDIT_EM_SetSel(es, extend ? es->selection_start : e, e, FALSE);
    EDIT_EM_ScrollCaret(es);
}

EDIT_MoveDown_ML()

static void EDIT_MoveDown_ML ( EDITSTATE *  es, BOOL  extend  )

static

Definition at line 1818 of file edit.c.

Referenced by EDIT_WM_Char(), and EDIT_WM_KeyDown().

{
    INT s = es->selection_start;
    INT e = es->selection_end;
    BOOL after_wrap = (es->flags & EF_AFTER_WRAP);
    LRESULT pos = EDIT_EM_PosFromChar(es, e, after_wrap);
    INT x = (short)LOWORD(pos);
    INT y = (short)HIWORD(pos);

    e = EDIT_CharFromPos(es, x, y + es->line_height, &after_wrap);
    if (!extend)
        s = e;
    EDIT_EM_SetSel(es, s, e, after_wrap);
    EDIT_EM_ScrollCaret(es);
}

EDIT_MoveEnd()

static void EDIT_MoveEnd ( EDITSTATE *  es, BOOL  extend, BOOL  ctrl  )

static

Definition at line 1840 of file edit.c.

Referenced by EDIT_WM_KeyDown().

{
    BOOL after_wrap = FALSE;
    INT e;

    /* Pass a high value in x to make sure of receiving the end of the line */
    if (!ctrl && (es->style & ES_MULTILINE))
        e = EDIT_CharFromPos(es, 0x3fffffff,
            HIWORD(EDIT_EM_PosFromChar(es, es->selection_end, es->flags & EF_AFTER_WRAP)), &after_wrap);
    else
        e = get_text_length(es);
    EDIT_EM_SetSel(es, extend ? es->selection_start : e, e, after_wrap);
    EDIT_EM_ScrollCaret(es);
}

EDIT_MoveForward()

static void EDIT_MoveForward ( EDITSTATE *  es, BOOL  extend  )

static

Definition at line 1861 of file edit.c.

Referenced by EDIT_WM_KeyDown(), and EDIT_WM_Timer().

{
    INT e = es->selection_end;

    if (es->text[e]) {
        e++;
        if ((es->style & ES_MULTILINE) && (es->text[e - 1] == '\r')) {
            if (es->text[e] == '\n')
                e++;
            else if ((es->text[e] == '\r') && (es->text[e + 1] == '\n'))
                e += 2;
        }
    }
    EDIT_EM_SetSel(es, extend ? es->selection_start : e, e, FALSE);
    EDIT_EM_ScrollCaret(es);
}

EDIT_MoveHome()

static void EDIT_MoveHome ( EDITSTATE *  es, BOOL  extend, BOOL  ctrl  )

static

Definition at line 1886 of file edit.c.

Referenced by EDIT_WM_Char(), and EDIT_WM_KeyDown().

{
    INT e;

    /* Pass the x_offset in x to make sure of receiving the first position of the line */
    if (!ctrl && (es->style & ES_MULTILINE))
        e = EDIT_CharFromPos(es, -es->x_offset,
            HIWORD(EDIT_EM_PosFromChar(es, es->selection_end, es->flags & EF_AFTER_WRAP)), NULL);
    else
        e = 0;
    EDIT_EM_SetSel(es, extend ? es->selection_start : e, e, FALSE);
    EDIT_EM_ScrollCaret(es);
}

EDIT_MovePageDown_ML()

static void EDIT_MovePageDown_ML ( EDITSTATE *  es, BOOL  extend  )

static

Definition at line 1910 of file edit.c.

Referenced by EDIT_WM_KeyDown().

{
    INT s = es->selection_start;
    INT e = es->selection_end;
    BOOL after_wrap = (es->flags & EF_AFTER_WRAP);
    LRESULT pos = EDIT_EM_PosFromChar(es, e, after_wrap);
    INT x = (short)LOWORD(pos);
    INT y = (short)HIWORD(pos);

    e = EDIT_CharFromPos(es, x,
        y + (es->format_rect.bottom - es->format_rect.top),
        &after_wrap);
    if (!extend)
        s = e;
    EDIT_EM_SetSel(es, s, e, after_wrap);
    EDIT_EM_ScrollCaret(es);
}

EDIT_MovePageUp_ML()

static void EDIT_MovePageUp_ML ( EDITSTATE *  es, BOOL  extend  )

static

Definition at line 1938 of file edit.c.

Referenced by EDIT_WM_KeyDown().

{
    INT s = es->selection_start;
    INT e = es->selection_end;
    BOOL after_wrap = (es->flags & EF_AFTER_WRAP);
    LRESULT pos = EDIT_EM_PosFromChar(es, e, after_wrap);
    INT x = (short)LOWORD(pos);
    INT y = (short)HIWORD(pos);

    e = EDIT_CharFromPos(es, x,
        y - (es->format_rect.bottom - es->format_rect.top),
        &after_wrap);
    if (!extend)
        s = e;
    EDIT_EM_SetSel(es, s, e, after_wrap);
    EDIT_EM_ScrollCaret(es);
}

EDIT_MoveUp_ML()

static void EDIT_MoveUp_ML ( EDITSTATE *  es, BOOL  extend  )

static

Definition at line 1966 of file edit.c.

Referenced by EDIT_WM_KeyDown().

{
    INT s = es->selection_start;
    INT e = es->selection_end;
    BOOL after_wrap = (es->flags & EF_AFTER_WRAP);
    LRESULT pos = EDIT_EM_PosFromChar(es, e, after_wrap);
    INT x = (short)LOWORD(pos);
    INT y = (short)HIWORD(pos);

    e = EDIT_CharFromPos(es, x, y - es->line_height, &after_wrap);
    if (!extend)
        s = e;
    EDIT_EM_SetSel(es, s, e, after_wrap);
    EDIT_EM_ScrollCaret(es);
}

EDIT_MoveWordBackward()

static void EDIT_MoveWordBackward ( EDITSTATE *  es, BOOL  extend  )

static

Definition at line 1988 of file edit.c.

Referenced by EDIT_WM_KeyDown().

{
    INT s = es->selection_start;
    INT e = es->selection_end;
    INT l;
    INT ll;