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user32: Only adjust the margins if the edit control is above a certain size.

This commit is contained in:
Huw Davies 2006-03-22 12:16:44 +00:00 committed by Alexandre Julliard
parent 15a2169ec0
commit c4b44245fb
2 changed files with 130 additions and 8 deletions
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33
dlls/user/edit.c
View File

@ -246,7 +246,7 @@ static void EDIT_EM_ScrollCaret(EDITSTATE *es);
static void EDIT_EM_SetHandle(EDITSTATE *es, HLOCAL hloc);
static void EDIT_EM_SetHandle16(EDITSTATE *es, HLOCAL16 hloc);
static void EDIT_EM_SetLimitText(EDITSTATE *es, INT limit);
static void EDIT_EM_SetMargins(EDITSTATE *es, INT action, INT left, INT right, BOOL repaint);
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 void EDIT_EM_SetSel(EDITSTATE *es, UINT start, UINT end, BOOL after_wrap);
static BOOL EDIT_EM_SetTabStops(EDITSTATE *es, INT count, LPINT tabs);
@ -747,7 +747,7 @@ static LRESULT WINAPI EditWndProc_common( HWND hwnd, UINT msg,
/* The following EM_xxx are new to win95 and don't exist for 16 bit */
case EM_SETMARGINS:
EDIT_EM_SetMargins(es, (INT)wParam, (short)LOWORD(lParam), (short)HIWORD(lParam), TRUE);
EDIT_EM_SetMargins(es, (INT)wParam, LOWORD(lParam), HIWORD(lParam), TRUE);
break;
case EM_GETMARGINS:
@ -3660,9 +3660,24 @@ static void EDIT_EM_SetLimitText(EDITSTATE *es, INT limit)
* of the char's width as the margin, but this is not how Windows handles this.
* For all other fonts Windows sets the margins to zero.
*
* FIXME - When EC_USEFONTINFO is used the margins only change if the
* edit control is equal to or larger than a certain size.
* Interestingly if one subtracts both the left and right margins from
* this size one always seems to get an even number. The extents of
* the (four character) string "'**'" match this quite closely, so
* we'll use this until we come up with a better idea.
*/
static int calc_min_set_margin_size(HDC dc, INT left, INT right)
{
WCHAR magic_string[] = {'\'','*','*','\'', 0};
SIZE sz;
GetTextExtentPointW(dc, magic_string, sizeof(magic_string)/sizeof(WCHAR) - 1, &sz);
return sz.cx + left + right;
}
static void EDIT_EM_SetMargins(EDITSTATE *es, INT action,
INT left, INT right, BOOL repaint)
WORD left, WORD right, BOOL repaint)
{
TEXTMETRICW tm;
INT default_left_margin = 0; /* in pixels */
@ -3675,9 +3690,17 @@ static void EDIT_EM_SetMargins(EDITSTATE *es, INT action,
GetTextMetricsW(dc, &tm);
/* The default margins are only non zero for TrueType or Vector fonts */
if (tm.tmPitchAndFamily & ( TMPF_VECTOR | TMPF_TRUETYPE )) {
int min_size;
RECT rc;
/* This must be calculated more exactly! But how? */
default_left_margin = tm.tmAveCharWidth / 3;
default_right_margin = tm.tmAveCharWidth / 3;
default_left_margin = tm.tmAveCharWidth / 2;
default_right_margin = tm.tmAveCharWidth / 2;
min_size = calc_min_set_margin_size(dc, default_left_margin, default_right_margin);
GetClientRect(es->hwndSelf, &rc);
if(rc.right - rc.left < min_size) {
default_left_margin = es->left_margin;
default_right_margin = es->right_margin;
}
}
SelectObject(dc, old_font);
ReleaseDC(es->hwndSelf, dc);

99
dlls/user/tests/edit.c
View File

@ -764,6 +764,104 @@ static void test_margins(void)
DestroyWindow (hwEdit);
}
static INT CALLBACK find_font_proc(const LOGFONT *elf, const TEXTMETRIC *ntm, DWORD type, LPARAM lParam)
{
return 0;
}
static void test_margins_font_change(void)
{
HWND hwEdit;
DWORD margins, font_margins;
LOGFONT lf;
HFONT hfont, hfont2;
HDC hdc = GetDC(0);
if(EnumFontFamiliesA(hdc, "Arial", find_font_proc, 0))
{
trace("Arial not found - skipping font change margin tests\n");
ReleaseDC(0, hdc);
return;
}
ReleaseDC(0, hdc);
hwEdit = create_child_editcontrol(0, 0);
SetWindowPos(hwEdit, NULL, 10, 10, 1000, 100, SWP_NOZORDER | SWP_NOACTIVATE);
memset(&lf, 0, sizeof(lf));
strcpy(lf.lfFaceName, "Arial");
lf.lfHeight = 16;
lf.lfCharSet = DEFAULT_CHARSET;
hfont = CreateFontIndirectA(&lf);
lf.lfHeight = 30;
hfont2 = CreateFontIndirectA(&lf);
SendMessageA(hwEdit, WM_SETFONT, (WPARAM)hfont, 0);
font_margins = SendMessage(hwEdit, EM_GETMARGINS, 0, 0);
ok(LOWORD(font_margins) != 0, "got %d\n", LOWORD(font_margins));
ok(HIWORD(font_margins) != 0, "got %d\n", HIWORD(font_margins));
/* With 'small' edit controls, test that the margin doesn't get set */
SetWindowPos(hwEdit, NULL, 10, 10, 16, 100, SWP_NOZORDER | SWP_NOACTIVATE);
SendMessageA(hwEdit, EM_SETMARGINS, EC_LEFTMARGIN | EC_RIGHTMARGIN, MAKELONG(0,0));
SendMessageA(hwEdit, WM_SETFONT, (WPARAM)hfont, 0);
margins = SendMessage(hwEdit, EM_GETMARGINS, 0, 0);
ok(LOWORD(margins) == 0, "got %d\n", LOWORD(margins));
ok(HIWORD(margins) == 0, "got %d\n", HIWORD(margins));
SendMessageA(hwEdit, EM_SETMARGINS, EC_LEFTMARGIN | EC_RIGHTMARGIN, MAKELONG(1,0));
SendMessageA(hwEdit, WM_SETFONT, (WPARAM)hfont, 0);
margins = SendMessage(hwEdit, EM_GETMARGINS, 0, 0);
ok(LOWORD(margins) == 1, "got %d\n", LOWORD(margins));
ok(HIWORD(margins) == 0, "got %d\n", HIWORD(margins));
SendMessageA(hwEdit, EM_SETMARGINS, EC_LEFTMARGIN | EC_RIGHTMARGIN, MAKELONG(1,1));
SendMessageA(hwEdit, WM_SETFONT, (WPARAM)hfont, 0);
margins = SendMessage(hwEdit, EM_GETMARGINS, 0, 0);
ok(LOWORD(margins) == 1, "got %d\n", LOWORD(margins));
ok(HIWORD(margins) == 1, "got %d\n", HIWORD(margins));
SendMessageA(hwEdit, EM_SETMARGINS, EC_LEFTMARGIN | EC_RIGHTMARGIN, MAKELONG(EC_USEFONTINFO,EC_USEFONTINFO));
margins = SendMessage(hwEdit, EM_GETMARGINS, 0, 0);
ok(LOWORD(margins) == 1, "got %d\n", LOWORD(margins));
ok(HIWORD(margins) == 1, "got %d\n", HIWORD(margins));
SendMessageA(hwEdit, WM_SETFONT, (WPARAM)hfont2, 0);
margins = SendMessage(hwEdit, EM_GETMARGINS, 0, 0);
ok(LOWORD(margins) == 1, "got %d\n", LOWORD(margins));
ok(HIWORD(margins) == 1, "got %d\n", HIWORD(margins));
/* Above a certain size threshold then the margin is updated */
SetWindowPos(hwEdit, NULL, 10, 10, 1000, 100, SWP_NOZORDER | SWP_NOACTIVATE);
SendMessageA(hwEdit, EM_SETMARGINS, EC_LEFTMARGIN | EC_RIGHTMARGIN, MAKELONG(1,0));
SendMessageA(hwEdit, WM_SETFONT, (WPARAM)hfont, 0);
margins = SendMessage(hwEdit, EM_GETMARGINS, 0, 0);
ok(LOWORD(margins) == LOWORD(font_margins), "got %d\n", LOWORD(margins));
ok(HIWORD(margins) == HIWORD(font_margins), "got %d\n", HIWORD(margins));
SendMessageA(hwEdit, EM_SETMARGINS, EC_LEFTMARGIN | EC_RIGHTMARGIN, MAKELONG(1,1));
SendMessageA(hwEdit, WM_SETFONT, (WPARAM)hfont, 0);
margins = SendMessage(hwEdit, EM_GETMARGINS, 0, 0);
ok(LOWORD(margins) == LOWORD(font_margins), "got %d\n", LOWORD(margins));
ok(HIWORD(margins) == HIWORD(font_margins), "got %d\n", HIWORD(margins));
SendMessageA(hwEdit, EM_SETMARGINS, EC_LEFTMARGIN | EC_RIGHTMARGIN, MAKELONG(EC_USEFONTINFO,EC_USEFONTINFO));
margins = SendMessage(hwEdit, EM_GETMARGINS, 0, 0);
ok(LOWORD(margins) == LOWORD(font_margins), "got %d\n", LOWORD(margins));
ok(HIWORD(margins) == HIWORD(font_margins), "got %d\n", HIWORD(margins));
SendMessageA(hwEdit, WM_SETFONT, (WPARAM)hfont2, 0);
margins = SendMessage(hwEdit, EM_GETMARGINS, 0, 0);
ok(LOWORD(margins) != LOWORD(font_margins), "got %d\n", LOWORD(margins));
ok(HIWORD(margins) != HIWORD(font_margins), "got %d\n", HIWORD(margins));
SendMessageA(hwEdit, WM_SETFONT, 0, 0);
DeleteObject(hfont2);
DeleteObject(hfont);
destroy_child_editcontrol(hwEdit);
}
#define edit_pos_ok(exp, got, txt) \
ok(exp == got, "wrong " #txt " expected %d got %ld\n", exp, got);
@ -968,6 +1066,7 @@ START_TEST(edit)
test_edit_control_4();
test_edit_control_5();
test_margins();
test_margins_font_change();
test_text_position();
UnregisterWindowClasses();