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richedit: Prevented using NULL hwnd for certain operations. 

Certain operations will simply not be done for windowless richedit
controls, such as WM_PAINT which isn't done for windowless richedit
controls since ITextServices provides a TxDraw method.
This commit is contained in:
Dylan Smith 2009-01-20 01:41:36 -05:00 committed by Alexandre Julliard
parent 05c788ac6f
commit 902afbc65b
4 changed files with 149 additions and 110 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

207
dlls/riched20/editor.c
View File

@ -2546,23 +2546,26 @@ static BOOL ME_SetCursor(ME_TextEditor *editor)
pt.x = (short)LOWORD(messagePos);
pt.y = (short)HIWORD(messagePos);
sbi.cbSize = sizeof(sbi);
GetScrollBarInfo(editor->hWnd, OBJID_HSCROLL, &sbi);
if (!(sbi.rgstate[0] & (STATE_SYSTEM_INVISIBLE|STATE_SYSTEM_OFFSCREEN)) &&
PtInRect(&sbi.rcScrollBar, pt))
if (editor->hWnd)
{
ITextHost_TxSetCursor(editor->texthost,
LoadCursorW(NULL, (WCHAR*)IDC_ARROW), FALSE);
return TRUE;
}
sbi.cbSize = sizeof(sbi);
GetScrollBarInfo(editor->hWnd, OBJID_VSCROLL, &sbi);
if (!(sbi.rgstate[0] & (STATE_SYSTEM_INVISIBLE|STATE_SYSTEM_OFFSCREEN)) &&
PtInRect(&sbi.rcScrollBar, pt))
{
ITextHost_TxSetCursor(editor->texthost,
LoadCursorW(NULL, (WCHAR*)IDC_ARROW), FALSE);
return TRUE;
sbi.cbSize = sizeof(sbi);
GetScrollBarInfo(editor->hWnd, OBJID_HSCROLL, &sbi);
if (!(sbi.rgstate[0] & (STATE_SYSTEM_INVISIBLE|STATE_SYSTEM_OFFSCREEN)) &&
PtInRect(&sbi.rcScrollBar, pt))
{
ITextHost_TxSetCursor(editor->texthost,
LoadCursorW(NULL, (WCHAR*)IDC_ARROW), FALSE);
return TRUE;
}
sbi.cbSize = sizeof(sbi);
GetScrollBarInfo(editor->hWnd, OBJID_VSCROLL, &sbi);
if (!(sbi.rgstate[0] & (STATE_SYSTEM_INVISIBLE|STATE_SYSTEM_OFFSCREEN)) &&
PtInRect(&sbi.rcScrollBar, pt))
{
ITextHost_TxSetCursor(editor->texthost,
LoadCursorW(NULL, (WCHAR*)IDC_ARROW), FALSE);
return TRUE;
}
}
ITextHost_TxScreenToClient(editor->texthost, &pt);
@ -2630,10 +2633,8 @@ static BOOL ME_SetCursor(ME_TextEditor *editor)
static void ME_SetDefaultFormatRect(ME_TextEditor *editor)
{
DWORD exstyle = GetWindowLongW(editor->hWnd, GWL_EXSTYLE);
ITextHost_TxGetClientRect(editor->texthost, &editor->rcFormat);
editor->rcFormat.top += (exstyle & WS_EX_CLIENTEDGE ? 1 : 0);
editor->rcFormat.top += editor->exStyleFlags & WS_EX_CLIENTEDGE ? 1 : 0;
editor->rcFormat.left += 1 + editor->selofs;
editor->rcFormat.right -= 1;
}
@ -2643,7 +2644,7 @@ static BOOL ME_ShowContextMenu(ME_TextEditor *editor, int x, int y)
CHARRANGE selrange;
HMENU menu;
int seltype = 0;
if(!editor->lpOleCallback)
if(!editor->lpOleCallback || !editor->hWnd)
return FALSE;
ME_GetSelection(editor, &selrange.cpMin, &selrange.cpMax);
if(selrange.cpMin == selrange.cpMax)
@ -3125,12 +3126,12 @@ static LRESULT ME_HandleMessage(ME_TextEditor *editor, UINT msg, WPARAM wParam,
}
case EM_SETOPTIONS:
{
/* these flags are equivalent to ES_* counterparts
* ECO_READONLY is already implemented in the code, only requires
* setting the bit to work
*/
DWORD mask = ECO_VERTICAL | ECO_AUTOHSCROLL | ECO_AUTOVSCROLL |
ECO_NOHIDESEL | ECO_READONLY | ECO_WANTRETURN | ECO_SELECTIONBAR;
/* these flags are equivalent to ES_* counterparts, except for
* ECO_AUTOWORDSELECTION that doesn't have an ES_* counterpart,
* but is still stored in editor->styleFlags. */
const DWORD mask = ECO_VERTICAL | ECO_AUTOHSCROLL | ECO_AUTOVSCROLL |
ECO_NOHIDESEL | ECO_READONLY | ECO_WANTRETURN |
ECO_SELECTIONBAR | ECO_AUTOWORDSELECTION;
DWORD settings = mask & editor->styleFlags;
DWORD oldSettings = settings;
DWORD changedSettings;
@ -3151,14 +3152,8 @@ static LRESULT ME_HandleMessage(ME_TextEditor *editor, UINT msg, WPARAM wParam,
}
changedSettings = oldSettings ^ settings;
if (settings & ECO_AUTOWORDSELECTION)
FIXME("ECO_AUTOWORDSELECTION not implemented yet!\n");
if (oldSettings ^ settings) {
DWORD dwStyle = GetWindowLongW(editor->hWnd, GWL_STYLE);
editor->styleFlags = (editor->styleFlags & ~mask) | (settings & mask);
SetWindowLongW(editor->hWnd, GWL_STYLE, (dwStyle & ~mask) | (settings & mask));
if (settings & ECO_SELECTIONBAR) {
editor->selofs = SELECTIONBAR_WIDTH;
@ -3180,6 +3175,8 @@ static LRESULT ME_HandleMessage(ME_TextEditor *editor, UINT msg, WPARAM wParam,
FIXME("ECO_NOHIDESEL not implemented yet!\n");
if (settings & ECO_WANTRETURN)
FIXME("ECO_WANTRETURN not implemented yet!\n");
if (settings & ECO_AUTOWORDSELECTION)
FIXME("ECO_AUTOWORDSELECTION not implemented yet!\n");
return settings;
}
@ -3333,15 +3330,10 @@ static LRESULT ME_HandleMessage(ME_TextEditor *editor, UINT msg, WPARAM wParam,
}
case EM_SETREADONLY:
{
LONG winStyle = GetWindowLongW(editor->hWnd, GWL_STYLE);
if (wParam) {
if (wParam)
editor->styleFlags |= ES_READONLY;
winStyle |= ES_READONLY;
} else {
else
editor->styleFlags &= ~ES_READONLY;
winStyle &= ~ES_READONLY;
}
SetWindowLongW(editor->hWnd, GWL_STYLE, winStyle);
return 0;
}
case EM_SETEVENTMASK:
@ -3931,8 +3923,13 @@ static LRESULT ME_HandleMessage(ME_TextEditor *editor, UINT msg, WPARAM wParam,
si.nMax = (si.fMask & SIF_DISABLENOSCROLL) ? 1 : 0;
si.nMin = 0;
si.nPage = 0;
SetScrollInfo(editor->hWnd, SB_VERT, &si, TRUE);
SetScrollInfo(editor->hWnd, SB_HORZ, &si, TRUE);
if (editor->hWnd) {
SetScrollInfo(editor->hWnd, SB_VERT, &si, TRUE);
SetScrollInfo(editor->hWnd, SB_HORZ, &si, TRUE);
} else {
ITextHost_TxSetScrollRange(editor->texthost, SB_VERT, si.nMin, si.nMax, TRUE);
ITextHost_TxSetScrollRange(editor->texthost, SB_HORZ, si.nMin, si.nMax, TRUE);
}
ME_CommitUndo(editor);
ME_WrapMarkedParagraphs(editor);
@ -4000,44 +3997,6 @@ static LRESULT ME_HandleMessage(ME_TextEditor *editor, UINT msg, WPARAM wParam,
if (!ME_ShowContextMenu(editor, (short)LOWORD(lParam), (short)HIWORD(lParam)))
goto do_default;
break;
case WM_PAINT:
{
HDC hDC;
RECT rc;
PAINTSTRUCT ps;
hDC = BeginPaint(editor->hWnd, &ps);
/* Erase area outside of the formatting rectangle */
if (ps.rcPaint.top < editor->rcFormat.top)
{
rc = ps.rcPaint;
rc.bottom = editor->rcFormat.top;
FillRect(hDC, &rc, editor->hbrBackground);
ps.rcPaint.top = editor->rcFormat.top;
}
if (ps.rcPaint.bottom > editor->rcFormat.bottom) {
rc = ps.rcPaint;
rc.top = editor->rcFormat.bottom;
FillRect(hDC, &rc, editor->hbrBackground);
ps.rcPaint.bottom = editor->rcFormat.bottom;
}
if (ps.rcPaint.left < editor->rcFormat.left) {
rc = ps.rcPaint;
rc.right = editor->rcFormat.left;
FillRect(hDC, &rc, editor->hbrBackground);
ps.rcPaint.left = editor->rcFormat.left;
}
if (ps.rcPaint.right > editor->rcFormat.right) {
rc = ps.rcPaint;
rc.left = editor->rcFormat.right;
FillRect(hDC, &rc, editor->hbrBackground);
ps.rcPaint.right = editor->rcFormat.right;
}
ME_PaintContent(editor, hDC, FALSE, &ps.rcPaint);
EndPaint(editor->hWnd, &ps);
}
break;
case WM_SETFOCUS:
editor->bHaveFocus = TRUE;
ME_ShowCaret(editor);
@ -4049,16 +4008,6 @@ static LRESULT ME_HandleMessage(ME_TextEditor *editor, UINT msg, WPARAM wParam,
ME_HideCaret(editor);
ME_SendOldNotify(editor, EN_KILLFOCUS);
return 0;
case WM_ERASEBKGND:
{
HDC hDC = (HDC)wParam;
RECT rc;
if (GetUpdateRect(editor->hWnd,&rc,TRUE))
{
FillRect(hDC, &rc, editor->hbrBackground);
}
return 1;
}
case WM_COMMAND:
TRACE("editor wnd command = %d\n", LOWORD(wParam));
return 0;
@ -4242,11 +4191,11 @@ static LRESULT ME_HandleMessage(ME_TextEditor *editor, UINT msg, WPARAM wParam,
{
if (lParam)
{
DWORD exstyle = GetWindowLongW(editor->hWnd, GWL_EXSTYLE);
int border = (exstyle & WS_EX_CLIENTEDGE) ? 1 : 0;
int border = 0;
RECT clientRect;
RECT *rc = (RECT *)lParam;
border = editor->exStyleFlags & WS_EX_CLIENTEDGE ? 1 : 0;
ITextHost_TxGetClientRect(editor->texthost, &clientRect);
if (wParam == 0)
{
@ -4467,7 +4416,81 @@ static LRESULT RichEditWndProc_common(HWND hWnd, UINT msg, WPARAM wParam,
}
}
lresult = ME_HandleMessage(editor, msg, wParam, lParam, unicode, &hresult);
switch (msg)
{
case WM_PAINT:
{
HDC hDC;
RECT rc;
PAINTSTRUCT ps;
hDC = BeginPaint(editor->hWnd, &ps);
/* Erase area outside of the formatting rectangle */
if (ps.rcPaint.top < editor->rcFormat.top)
{
rc = ps.rcPaint;
rc.bottom = editor->rcFormat.top;
FillRect(hDC, &rc, editor->hbrBackground);
ps.rcPaint.top = editor->rcFormat.top;
}
if (ps.rcPaint.bottom > editor->rcFormat.bottom) {
rc = ps.rcPaint;
rc.top = editor->rcFormat.bottom;
FillRect(hDC, &rc, editor->hbrBackground);
ps.rcPaint.bottom = editor->rcFormat.bottom;
}
if (ps.rcPaint.left < editor->rcFormat.left) {
rc = ps.rcPaint;
rc.right = editor->rcFormat.left;
FillRect(hDC, &rc, editor->hbrBackground);
ps.rcPaint.left = editor->rcFormat.left;
}
if (ps.rcPaint.right > editor->rcFormat.right) {
rc = ps.rcPaint;
rc.left = editor->rcFormat.right;
FillRect(hDC, &rc, editor->hbrBackground);
ps.rcPaint.right = editor->rcFormat.right;
}
ME_PaintContent(editor, hDC, FALSE, &ps.rcPaint);
EndPaint(editor->hWnd, &ps);
return 0;
}
case WM_ERASEBKGND:
{
HDC hDC = (HDC)wParam;
RECT rc;
if (GetUpdateRect(editor->hWnd, &rc, TRUE))
FillRect(hDC, &rc, editor->hbrBackground);
return 1;
}
case EM_SETOPTIONS:
{
DWORD dwStyle;
const DWORD mask = ECO_VERTICAL | ECO_AUTOHSCROLL | ECO_AUTOVSCROLL |
ECO_NOHIDESEL | ECO_READONLY | ECO_WANTRETURN |
ECO_SELECTIONBAR;
lresult = ME_HandleMessage(editor, msg, wParam, lParam, unicode, &hresult);
dwStyle = GetWindowLongW(hWnd, GWL_STYLE);
dwStyle = (dwStyle & ~mask) | (lresult & mask);
SetWindowLongW(hWnd, GWL_STYLE, dwStyle);
return lresult;
}
case EM_SETREADONLY:
{
DWORD dwStyle;
lresult = ME_HandleMessage(editor, msg, wParam, lParam, unicode, &hresult);
dwStyle = GetWindowLongW(hWnd, GWL_STYLE);
dwStyle &= ~ES_READONLY;
if (wParam)
dwStyle |= ES_READONLY;
SetWindowLongW(hWnd, GWL_STYLE, dwStyle);
return lresult;
}
default:
lresult = ME_HandleMessage(editor, msg, wParam, lParam, unicode, &hresult);
}
if (hresult == S_FALSE)
lresult = DefWindowProcW(hWnd, msg, wParam, lParam);

1
dlls/riched20/editstr.h
View File

@ -338,6 +338,7 @@ typedef struct tagME_TextEditor
ME_TextBuffer *pBuffer;
ME_Cursor *pCursors;
DWORD styleFlags;
DWORD exStyleFlags;
int nCursors;
SIZE sizeWindow;
int nTotalLength, nLastTotalLength;

50
dlls/riched20/paint.c
View File

@ -1036,7 +1036,6 @@ static void ME_DrawParagraph(ME_Context *c, ME_DisplayItem *paragraph)
void ME_ScrollAbs(ME_TextEditor *editor, int x, int y)
{
LONG winStyle;
BOOL bScrollBarIsVisible, bScrollBarWillBeVisible;
int scrollX = 0, scrollY = 0;
@ -1065,20 +1064,23 @@ void ME_ScrollAbs(ME_TextEditor *editor, int x, int y)
NULL, NULL, SW_INVALIDATE);
ME_Repaint(editor);
winStyle = GetWindowLongW(editor->hWnd, GWL_STYLE);
bScrollBarIsVisible = (winStyle & WS_HSCROLL) != 0;
bScrollBarWillBeVisible = (editor->nTotalWidth > editor->sizeWindow.cx)
|| (editor->styleFlags & ES_DISABLENOSCROLL);
if (bScrollBarIsVisible != bScrollBarWillBeVisible)
ITextHost_TxShowScrollBar(editor->texthost, SB_HORZ,
bScrollBarWillBeVisible);
if (editor->hWnd)
{
LONG winStyle = GetWindowLongW(editor->hWnd, GWL_STYLE);
bScrollBarIsVisible = (winStyle & WS_HSCROLL) != 0;
bScrollBarWillBeVisible = (editor->nTotalWidth > editor->sizeWindow.cx)
|| (editor->styleFlags & ES_DISABLENOSCROLL);
if (bScrollBarIsVisible != bScrollBarWillBeVisible)
ITextHost_TxShowScrollBar(editor->texthost, SB_HORZ,
bScrollBarWillBeVisible);
bScrollBarIsVisible = (winStyle & WS_VSCROLL) != 0;
bScrollBarWillBeVisible = (editor->nTotalLength > editor->sizeWindow.cy)
|| (editor->styleFlags & ES_DISABLENOSCROLL);
if (bScrollBarIsVisible != bScrollBarWillBeVisible)
ITextHost_TxShowScrollBar(editor->texthost, SB_VERT,
bScrollBarWillBeVisible);
bScrollBarIsVisible = (winStyle & WS_VSCROLL) != 0;
bScrollBarWillBeVisible = (editor->nTotalLength > editor->sizeWindow.cy)
|| (editor->styleFlags & ES_DISABLENOSCROLL);
if (bScrollBarIsVisible != bScrollBarWillBeVisible)
ITextHost_TxShowScrollBar(editor->texthost, SB_VERT,
bScrollBarWillBeVisible);
}
ME_UpdateScrollBar(editor);
}
@ -1152,8 +1154,14 @@ void ME_UpdateScrollBar(ME_TextEditor *editor)
editor->horz_si.nMin = si.nMin;
editor->horz_si.nMax = si.nMax;
editor->horz_si.nPage = si.nPage;
if (bScrollBarWillBeVisible || bScrollBarWasVisible)
SetScrollInfo(editor->hWnd, SB_HORZ, &si, TRUE);
if (bScrollBarWillBeVisible || bScrollBarWasVisible) {
if (editor->hWnd) {
SetScrollInfo(editor->hWnd, SB_HORZ, &si, TRUE);
} else {
ITextHost_TxSetScrollRange(editor->texthost, SB_HORZ, si.nMin, si.nMax, FALSE);
ITextHost_TxSetScrollPos(editor->texthost, SB_HORZ, si.nPos, TRUE);
}
}
}
if (si.fMask & SIF_DISABLENOSCROLL)
@ -1186,8 +1194,14 @@ void ME_UpdateScrollBar(ME_TextEditor *editor)
editor->vert_si.nMin = si.nMin;
editor->vert_si.nMax = si.nMax;
editor->vert_si.nPage = si.nPage;
if (bScrollBarWillBeVisible || bScrollBarWasVisible)
SetScrollInfo(editor->hWnd, SB_VERT, &si, TRUE);
if (bScrollBarWillBeVisible || bScrollBarWasVisible) {
if (editor->hWnd) {
SetScrollInfo(editor->hWnd, SB_VERT, &si, TRUE);
} else {
ITextHost_TxSetScrollRange(editor->texthost, SB_VERT, si.nMin, si.nMax, FALSE);
ITextHost_TxSetScrollPos(editor->texthost, SB_VERT, si.nPos, TRUE);
}
}
}
if (si.fMask & SIF_DISABLENOSCROLL)

1
dlls/riched20/txthost.c
View File

@ -58,6 +58,7 @@ ITextHost *ME_CreateTextHost(HWND hwnd, BOOL bEmulateVersion10)
texthost->bEmulateVersion10 = bEmulateVersion10;
editor = ME_MakeEditor((ITextHost*)texthost, bEmulateVersion10);
editor->exStyleFlags = GetWindowLongW(hwnd, GWL_EXSTYLE);
editor->hWnd = hwnd; /* FIXME: Remove editor's dependance on hWnd */
SetWindowLongPtrW(hwnd, 0, (LONG_PTR)editor);
}