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Add ability to scroll dialogs by dragging. Works only on

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touchscreens, and has no sense of momentum.
This commit is contained in:
ehouse 2009-04-26 20:10:28 +00:00
parent eb5ee8431b
commit e4977e2c5f
2 changed files with 36 additions and 7 deletions
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41
xwords4/wince/ceutil.c
View file

@ -33,22 +33,23 @@
static XP_Bool ceDoDlgScroll( CeDlgHdr* dlgHdr, WPARAM wParam );
static void ceDoDlgFocusScroll( CeDlgHdr* dlgHdr, HWND nextCtrl );
static void adjustScrollPos( HWND hDlg, XP_S16 vertChange );
void
ceSetDlgItemText( HWND hDlg, XP_U16 id, const XP_UCHAR* buf )
ceSetDlgItemText( HWND hDlg, XP_U16 id, const XP_UCHAR* str )
{
wchar_t widebuf[BUF_SIZE];
XP_U16 len;
XP_ASSERT( buf != NULL );
XP_ASSERT( str != NULL );
len = (XP_U16)XP_STRLEN( buf );
len = (XP_U16)XP_STRLEN( str );
if ( len >= BUF_SIZE ) {
len = BUF_SIZE - 1;
if ( len >= VSIZE(widebuf) ) {
len = VSIZE(widebuf) - 1;
}
MultiByteToWideChar( CP_ACP, MB_PRECOMPOSED, buf, len, widebuf, len );
MultiByteToWideChar( CP_ACP, MB_PRECOMPOSED, str, len, widebuf, len );
widebuf[len] = 0;
SendDlgItemMessage( hDlg, id, WM_SETTEXT, 0, (long)widebuf );
} /* ceSetDlgItemText */
@ -448,6 +449,18 @@ editHasFocus( void )
} /* editHasFocus */
#endif
static void
scrollForMove( CeDlgHdr* dlgHdr, XP_U16 newY )
{
if ( dlgHdr->penDown ) {
XP_LOGF( "%s(%d)", __func__, newY );
XP_S16 vertChange = dlgHdr->prevY - newY;
dlgHdr->prevY = newY;
adjustScrollPos( dlgHdr->hDlg, vertChange );
}
}
XP_Bool
ceDoDlgHandle( CeDlgHdr* dlgHdr, UINT message, WPARAM wParam, LPARAM lParam )
{
@ -473,6 +486,20 @@ ceDoDlgHandle( CeDlgHdr* dlgHdr, UINT message, WPARAM wParam, LPARAM lParam )
handled = ceDoDlgScroll( dlgHdr, wParam );
break;
case WM_LBUTTONDOWN:
dlgHdr->penDown = XP_TRUE;
dlgHdr->prevY = HIWORD(lParam);
handled = XP_TRUE;
break;
case WM_MOUSEMOVE:
scrollForMove( dlgHdr, HIWORD(lParam) );
handled = XP_TRUE;
break;
case WM_LBUTTONUP:
dlgHdr->penDown = XP_FALSE;
handled = XP_TRUE;
break;
case WM_COMMAND:
if ( BN_SETFOCUS == HIWORD(wParam) ) {
ceDoDlgFocusScroll( dlgHdr, (HWND)lParam );
@ -483,7 +510,7 @@ ceDoDlgHandle( CeDlgHdr* dlgHdr, UINT message, WPARAM wParam, LPARAM lParam )
break;
}
return handled;
}
} /* ceDoDlgHandle */
static void
setScrollPos( HWND hDlg, XP_S16 newPos )

2
xwords4/wince/ceutil.h
View file

@ -74,6 +74,8 @@ typedef struct CeDlgHdr {
/* Below this line is private to ceutil.c */
DlgStateTask doWhat;
XP_U16 nPage;
XP_U16 prevY;
XP_Bool penDown;
} CeDlgHdr;
void ceDlgSetup( CeDlgHdr* dlgHdr, HWND hDlg, DlgStateTask doWhat );
void ceDlgComboShowHide( CeDlgHdr* dlgHdr, XP_U16 baseId );