[PATCH 3/6] user32: Pass a scroll bar tracking info parameter to SCROLL_DrawScrollBar().
Pack all scroll bar tracking information in a struct and pass that struct as a parameter to SCROLL_DrawScrollBar() instead of using global variables. Signed-off-by: Zhiyi Zhang <zzhang(a)codeweavers.com> --- dlls/user32/controls.h | 14 ++++- dlls/user32/scroll.c | 121 +++++++++++++++++++---------------------- 2 files changed, 70 insertions(+), 65 deletions(-) diff --git a/dlls/user32/controls.h b/dlls/user32/controls.h index 9bb6a0047d1..25ff4fe05ff 100644 --- a/dlls/user32/controls.h +++ b/dlls/user32/controls.h @@ -191,9 +191,21 @@ enum SCROLL_HITTEST SCROLL_BOTTOM_ARROW /* Bottom or right arrow */ }; +/* Scroll bar tracking information */ +struct SCROLL_TRACKING_INFO +{ + HWND win; /* Tracking window */ + INT bar; /* SB_HORZ / SB_VERT / SB_CTL */ + INT thumb_pos; /* Thumb position */ + INT thumb_val; /* Current thumb value from thumb position */ + BOOL vertical; /* Is scroll bar vertical */ + enum SCROLL_HITTEST hit_test; /* Hit Test code of the last button-down event */ +}; + extern void SCROLL_DrawNCScrollBar( HWND hwnd, HDC hdc, BOOL draw_horizontal, BOOL draw_vertical ) DECLSPEC_HIDDEN; extern void SCROLL_DrawScrollBar( HWND hwnd, HDC hdc, INT nBar, enum SCROLL_HITTEST hit_test, - BOOL arrows, BOOL interior ) DECLSPEC_HIDDEN; + const struct SCROLL_TRACKING_INFO *tracking_info, BOOL arrows, + BOOL interior ) DECLSPEC_HIDDEN; extern void SCROLL_TrackScrollBar( HWND hwnd, INT scrollbar, POINT pt ) DECLSPEC_HIDDEN; /* combo box */ diff --git a/dlls/user32/scroll.c b/dlls/user32/scroll.c index fdd657feda6..e941c00a562 100644 --- a/dlls/user32/scroll.c +++ b/dlls/user32/scroll.c @@ -80,14 +80,8 @@ typedef struct #define SA_SSI_REFRESH 0x0004 #define SA_SSI_REPAINT_ARROWS 0x0008 - /* Thumb-tracking info */ -static HWND SCROLL_TrackingWin = 0; -static INT SCROLL_TrackingBar = 0; -static INT SCROLL_TrackingPos = 0; -static INT SCROLL_TrackingVal = 0; - /* Hit test code of the last button-down event */ -static enum SCROLL_HITTEST SCROLL_trackHitTest; -static BOOL SCROLL_trackVertical; +/* Scroll Bar tracking information */ +static struct SCROLL_TRACKING_INFO g_tracking_info; /* Is the moving thumb being displayed? */ static BOOL SCROLL_MovingThumb = FALSE; @@ -456,7 +450,7 @@ static void SCROLL_DrawArrows( HDC hdc, SCROLLBAR_INFO *infoPtr, static void SCROLL_DrawMovingThumb( HDC hdc, RECT *rect, BOOL vertical, INT arrowSize, INT thumbSize ) { - INT pos = SCROLL_TrackingPos; + INT pos = g_tracking_info.thumb_pos; INT max_size; if( vertical ) @@ -471,7 +465,7 @@ static void SCROLL_DrawMovingThumb( HDC hdc, RECT *rect, BOOL vertical, else if( pos > max_size ) pos = max_size; - SCROLL_DrawInterior( SCROLL_TrackingWin, hdc, SCROLL_TrackingBar, rect, arrowSize, thumbSize, pos, + SCROLL_DrawInterior( g_tracking_info.win, hdc, g_tracking_info.bar, rect, arrowSize, thumbSize, pos, 0, vertical, FALSE, FALSE ); } @@ -572,7 +566,8 @@ static void SCROLL_DrawInterior( HWND hwnd, HDC hdc, INT nBar, * * Redraw the whole scrollbar. */ -void SCROLL_DrawScrollBar( HWND hwnd, HDC hdc, INT nBar, enum SCROLL_HITTEST hit_test, BOOL arrows, +void SCROLL_DrawScrollBar( HWND hwnd, HDC hdc, INT nBar, enum SCROLL_HITTEST hit_test, + const struct SCROLL_TRACKING_INFO *tracking_info, BOOL arrows, BOOL interior ) { INT arrowSize, thumbSize, thumbPos; @@ -598,10 +593,10 @@ void SCROLL_DrawScrollBar( HWND hwnd, HDC hdc, INT nBar, enum SCROLL_HITTEST hit if (arrows && arrowSize) { - if( vertical == SCROLL_trackVertical && GetCapture() == hwnd ) + if (vertical == tracking_info->vertical && GetCapture() == hwnd) SCROLL_DrawArrows( hdc, infoPtr, &rect, arrowSize, vertical, - hit_test == SCROLL_trackHitTest && hit_test == SCROLL_TOP_ARROW, - hit_test == SCROLL_trackHitTest && hit_test == SCROLL_BOTTOM_ARROW ); + hit_test == tracking_info->hit_test && hit_test == SCROLL_TOP_ARROW, + hit_test == tracking_info->hit_test && hit_test == SCROLL_BOTTOM_ARROW ); else SCROLL_DrawArrows( hdc, infoPtr, &rect, arrowSize, vertical, FALSE, FALSE ); @@ -609,17 +604,17 @@ void SCROLL_DrawScrollBar( HWND hwnd, HDC hdc, INT nBar, enum SCROLL_HITTEST hit if (interior) { - if (SCROLL_MovingThumb && SCROLL_TrackingWin == hwnd && SCROLL_TrackingBar == nBar) + if (SCROLL_MovingThumb && tracking_info->win == hwnd && tracking_info->bar == nBar) { SCROLL_DrawMovingThumb( hdc, &rect, vertical, arrowSize, thumbSize ); SCROLL_MovingThumb = FALSE; } - else if (vertical == SCROLL_trackVertical && GetCapture() == hwnd) + else if (vertical == tracking_info->vertical && GetCapture() == hwnd) { SCROLL_DrawInterior( hwnd, hdc, nBar, &rect, arrowSize, thumbSize, thumbPos, infoPtr->flags, vertical, - hit_test == SCROLL_trackHitTest && hit_test == SCROLL_TOP_RECT, - hit_test == SCROLL_trackHitTest && hit_test == SCROLL_BOTTOM_RECT ); + hit_test == tracking_info->hit_test && hit_test == SCROLL_TOP_RECT, + hit_test == tracking_info->hit_test && hit_test == SCROLL_BOTTOM_RECT ); } else { @@ -645,9 +640,9 @@ void SCROLL_DrawScrollBar( HWND hwnd, HDC hdc, INT nBar, enum SCROLL_HITTEST hit void SCROLL_DrawNCScrollBar( HWND hwnd, HDC hdc, BOOL draw_horizontal, BOOL draw_vertical ) { if (draw_horizontal) - SCROLL_DrawScrollBar( hwnd, hdc, SB_HORZ, SCROLL_trackHitTest, TRUE, TRUE ); + SCROLL_DrawScrollBar( hwnd, hdc, SB_HORZ, g_tracking_info.hit_test, &g_tracking_info, TRUE, TRUE ); if (draw_vertical) - SCROLL_DrawScrollBar( hwnd, hdc, SB_VERT, SCROLL_trackHitTest, TRUE, TRUE ); + SCROLL_DrawScrollBar( hwnd, hdc, SB_VERT, g_tracking_info.hit_test, &g_tracking_info, TRUE, TRUE ); } /*********************************************************************** @@ -680,7 +675,7 @@ static void SCROLL_RefreshScrollBar( HWND hwnd, INT nBar, DCX_CACHE | ((nBar == SB_CTL) ? 0 : DCX_WINDOW) ); if (!hdc) return; - SCROLL_DrawScrollBar( hwnd, hdc, nBar, SCROLL_trackHitTest, arrows, interior ); + SCROLL_DrawScrollBar( hwnd, hdc, nBar, g_tracking_info.hit_test, &g_tracking_info, arrows, interior ); ReleaseDC( hwnd, hdc ); } @@ -748,7 +743,7 @@ static void SCROLL_HandleScrollEvent( HWND hwnd, INT nBar, UINT msg, POINT pt) SCROLLBAR_INFO *infoPtr = SCROLL_GetInternalInfo( hwnd, nBar, FALSE ); if (!infoPtr) return; - if ((SCROLL_trackHitTest == SCROLL_NOWHERE) && (msg != WM_LBUTTONDOWN)) + if ((g_tracking_info.hit_test == SCROLL_NOWHERE) && (msg != WM_LBUTTONDOWN)) return; if (nBar == SB_CTL && (GetWindowLongW( hwnd, GWL_STYLE ) & (SBS_SIZEGRIP | SBS_SIZEBOX))) @@ -759,7 +754,7 @@ static void SCROLL_HandleScrollEvent( HWND hwnd, INT nBar, UINT msg, POINT pt) HideCaret(hwnd); /* hide caret while holding down LBUTTON */ SetCapture( hwnd ); prevPt = pt; - SCROLL_trackHitTest = hittest = SCROLL_THUMB; + g_tracking_info.hit_test = hittest = SCROLL_THUMB; break; case WM_MOUSEMOVE: GetClientRect(GetParent(GetParent(hwnd)),&rect); @@ -767,7 +762,7 @@ static void SCROLL_HandleScrollEvent( HWND hwnd, INT nBar, UINT msg, POINT pt) break; case WM_LBUTTONUP: ReleaseCapture(); - SCROLL_trackHitTest = hittest = SCROLL_NOWHERE; + g_tracking_info.hit_test = hittest = SCROLL_NOWHERE; if (hwnd==GetFocus()) ShowCaret(hwnd); break; case WM_SYSTIMER: @@ -787,8 +782,8 @@ static void SCROLL_HandleScrollEvent( HWND hwnd, INT nBar, UINT msg, POINT pt) { case WM_LBUTTONDOWN: /* Initialise mouse tracking */ HideCaret(hwnd); /* hide caret while holding down LBUTTON */ - SCROLL_trackVertical = vertical; - SCROLL_trackHitTest = hittest = SCROLL_HitTest( hwnd, nBar, pt, FALSE ); + g_tracking_info.vertical = vertical; + g_tracking_info.hit_test = hittest = SCROLL_HitTest( hwnd, nBar, pt, FALSE ); lastClickPos = vertical ? (pt.y - rect.top) : (pt.x - rect.left); lastMousePos = lastClickPos; trackThumbPos = thumbPos; @@ -821,14 +816,14 @@ static void SCROLL_HandleScrollEvent( HWND hwnd, INT nBar, UINT msg, POINT pt) TRACE("Event: hwnd=%p bar=%d msg=%s pt=%d,%d hit=%d\n", hwnd, nBar, SPY_GetMsgName(msg,hwnd), pt.x, pt.y, hittest ); - switch(SCROLL_trackHitTest) + switch (g_tracking_info.hit_test) { case SCROLL_NOWHERE: /* No tracking in progress */ break; case SCROLL_TOP_ARROW: - SCROLL_DrawScrollBar( hwnd, hdc, nBar, hittest, TRUE, FALSE ); - if (hittest == SCROLL_trackHitTest) + SCROLL_DrawScrollBar( hwnd, hdc, nBar, hittest, &g_tracking_info, TRUE, FALSE ); + if (hittest == g_tracking_info.hit_test) { if ((msg == WM_LBUTTONDOWN) || (msg == WM_SYSTIMER)) { @@ -843,8 +838,8 @@ static void SCROLL_HandleScrollEvent( HWND hwnd, INT nBar, UINT msg, POINT pt) break; case SCROLL_TOP_RECT: - SCROLL_DrawScrollBar( hwnd, hdc, nBar, hittest, FALSE, TRUE ); - if (hittest == SCROLL_trackHitTest) + SCROLL_DrawScrollBar( hwnd, hdc, nBar, hittest, &g_tracking_info, FALSE, TRUE ); + if (hittest == g_tracking_info.hit_test) { if ((msg == WM_LBUTTONDOWN) || (msg == WM_SYSTIMER)) { @@ -860,21 +855,20 @@ static void SCROLL_HandleScrollEvent( HWND hwnd, INT nBar, UINT msg, POINT pt) case SCROLL_THUMB: if (msg == WM_LBUTTONDOWN) { - SCROLL_TrackingWin = hwnd; - SCROLL_TrackingBar = nBar; - SCROLL_TrackingPos = trackThumbPos + lastMousePos - lastClickPos; - SCROLL_TrackingVal = SCROLL_GetThumbVal( infoPtr, &rect, - vertical, - SCROLL_TrackingPos ); - if (!SCROLL_MovingThumb) + g_tracking_info.win = hwnd; + g_tracking_info.bar = nBar; + g_tracking_info.thumb_pos = trackThumbPos + lastMousePos - lastClickPos; + g_tracking_info.thumb_val = SCROLL_GetThumbVal( infoPtr, &rect, vertical, + g_tracking_info.thumb_pos ); + if (!SCROLL_MovingThumb) { SCROLL_MovingThumb = TRUE; - SCROLL_DrawScrollBar( hwnd, hdc, nBar, hittest, FALSE, TRUE ); + SCROLL_DrawScrollBar( hwnd, hdc, nBar, hittest, &g_tracking_info, FALSE, TRUE ); } } else if (msg == WM_LBUTTONUP) { - SCROLL_DrawScrollBar( hwnd, hdc, nBar, SCROLL_NOWHERE, FALSE, TRUE ); + SCROLL_DrawScrollBar( hwnd, hdc, nBar, SCROLL_NOWHERE, &g_tracking_info, FALSE, TRUE ); } else /* WM_MOUSEMOVE */ { @@ -889,22 +883,21 @@ static void SCROLL_HandleScrollEvent( HWND hwnd, INT nBar, UINT msg, POINT pt) if ( (pos != lastMousePos) || (!SCROLL_MovingThumb) ) { lastMousePos = pos; - SCROLL_TrackingPos = trackThumbPos + pos - lastClickPos; - SCROLL_TrackingVal = SCROLL_GetThumbVal( infoPtr, &rect, - vertical, - SCROLL_TrackingPos ); + g_tracking_info.thumb_pos = trackThumbPos + pos - lastClickPos; + g_tracking_info.thumb_val = SCROLL_GetThumbVal( infoPtr, &rect, vertical, + g_tracking_info.thumb_pos ); SendMessageW( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL, - MAKEWPARAM( SB_THUMBTRACK, SCROLL_TrackingVal), - (LPARAM)hwndCtl ); + MAKEWPARAM( SB_THUMBTRACK, g_tracking_info.thumb_val ), + (LPARAM)hwndCtl ); SCROLL_MovingThumb = TRUE; - SCROLL_DrawScrollBar( hwnd, hdc, nBar, hittest, FALSE, TRUE ); + SCROLL_DrawScrollBar( hwnd, hdc, nBar, hittest, &g_tracking_info, FALSE, TRUE ); } } break; case SCROLL_BOTTOM_RECT: - SCROLL_DrawScrollBar( hwnd, hdc, nBar, hittest, FALSE, TRUE ); - if (hittest == SCROLL_trackHitTest) + SCROLL_DrawScrollBar( hwnd, hdc, nBar, hittest, &g_tracking_info, FALSE, TRUE ); + if (hittest == g_tracking_info.hit_test) { if ((msg == WM_LBUTTONDOWN) || (msg == WM_SYSTIMER)) { @@ -918,8 +911,8 @@ static void SCROLL_HandleScrollEvent( HWND hwnd, INT nBar, UINT msg, POINT pt) break; case SCROLL_BOTTOM_ARROW: - SCROLL_DrawScrollBar( hwnd, hdc, nBar, hittest, TRUE, FALSE ); - if (hittest == SCROLL_trackHitTest) + SCROLL_DrawScrollBar( hwnd, hdc, nBar, hittest, &g_tracking_info, TRUE, FALSE ); + if (hittest == g_tracking_info.hit_test) { if ((msg == WM_LBUTTONDOWN) || (msg == WM_SYSTIMER)) { @@ -948,8 +941,8 @@ static void SCROLL_HandleScrollEvent( HWND hwnd, INT nBar, UINT msg, POINT pt) if (msg == WM_LBUTTONUP) { - hittest = SCROLL_trackHitTest; - SCROLL_trackHitTest = SCROLL_NOWHERE; /* Terminate tracking */ + hittest = g_tracking_info.hit_test; + g_tracking_info.hit_test = SCROLL_NOWHERE; /* Terminate tracking */ if (hittest == SCROLL_THUMB) { @@ -963,7 +956,7 @@ static void SCROLL_HandleScrollEvent( HWND hwnd, INT nBar, UINT msg, POINT pt) SB_ENDSCROLL, (LPARAM)hwndCtl ); /* Terminate tracking */ - SCROLL_TrackingWin = 0; + g_tracking_info.win = 0; SCROLL_MovingThumb = FALSE; } @@ -1115,7 +1108,7 @@ static BOOL SCROLL_GetScrollInfo(HWND hwnd, INT nBar, LPSCROLLINFO info) if (info->fMask & SIF_PAGE) info->nPage = infoPtr->page; if (info->fMask & SIF_POS) info->nPos = infoPtr->curVal; if ((info->fMask & SIF_TRACKPOS) && (info->cbSize == sizeof(*info))) - info->nTrackPos = (SCROLL_TrackingWin == WIN_GetFullHandle(hwnd)) ? SCROLL_TrackingVal : infoPtr->curVal; + info->nTrackPos = (g_tracking_info.win == WIN_GetFullHandle(hwnd)) ? g_tracking_info.thumb_val : infoPtr->curVal; if (info->fMask & SIF_RANGE) { info->nMin = infoPtr->minVal; @@ -1190,12 +1183,12 @@ static BOOL SCROLL_GetScrollBarInfo(HWND hwnd, LONG idObject, LPSCROLLBARINFO in } if (nBar == SB_CTL && !IsWindowEnabled(hwnd)) info->rgstate[0] |= STATE_SYSTEM_UNAVAILABLE; - - pressed = ((nBar == SB_VERT) == SCROLL_trackVertical && GetCapture() == hwnd); - + + pressed = ((nBar == SB_VERT) == g_tracking_info.vertical && GetCapture() == hwnd); + /* Top/left arrow button state. MSDN says top/right, but I don't believe it */ info->rgstate[1] = 0; - if (pressed && SCROLL_trackHitTest == SCROLL_TOP_ARROW) + if (pressed && g_tracking_info.hit_test == SCROLL_TOP_ARROW) info->rgstate[1] |= STATE_SYSTEM_PRESSED; if (infoPtr->flags & ESB_DISABLE_LTUP) info->rgstate[1] |= STATE_SYSTEM_UNAVAILABLE; @@ -1204,24 +1197,24 @@ static BOOL SCROLL_GetScrollBarInfo(HWND hwnd, LONG idObject, LPSCROLLBARINFO in info->rgstate[2] = 0; if (infoPtr->curVal == infoPtr->minVal) info->rgstate[2] |= STATE_SYSTEM_INVISIBLE; - if (pressed && SCROLL_trackHitTest == SCROLL_TOP_RECT) + if (pressed && g_tracking_info.hit_test == SCROLL_TOP_RECT) info->rgstate[2] |= STATE_SYSTEM_PRESSED; /* Thumb state */ info->rgstate[3] = 0; - if (pressed && SCROLL_trackHitTest == SCROLL_THUMB) + if (pressed && g_tracking_info.hit_test == SCROLL_THUMB) info->rgstate[3] |= STATE_SYSTEM_PRESSED; /* Page down/right region state. MSDN says down/left, but I don't believe it */ info->rgstate[4] = 0; if (infoPtr->curVal >= infoPtr->maxVal - 1) info->rgstate[4] |= STATE_SYSTEM_INVISIBLE; - if (pressed && SCROLL_trackHitTest == SCROLL_BOTTOM_RECT) + if (pressed && g_tracking_info.hit_test == SCROLL_BOTTOM_RECT) info->rgstate[4] |= STATE_SYSTEM_PRESSED; /* Bottom/right arrow button state. MSDN says bottom/left, but I don't believe it */ info->rgstate[5] = 0; - if (pressed && SCROLL_trackHitTest == SCROLL_BOTTOM_ARROW) + if (pressed && g_tracking_info.hit_test == SCROLL_BOTTOM_ARROW) info->rgstate[5] |= STATE_SYSTEM_PRESSED; if (infoPtr->flags & ESB_DISABLE_RTDN) info->rgstate[5] |= STATE_SYSTEM_UNAVAILABLE; @@ -1418,7 +1411,7 @@ LRESULT ScrollBarWndProc_common( HWND hwnd, UINT message, WPARAM wParam, LPARAM FillRect( hdc, &rc, GetSysColorBrush(COLOR_SCROLLBAR) ); } else - SCROLL_DrawScrollBar( hwnd, hdc, SB_CTL, SCROLL_trackHitTest, TRUE, TRUE ); + SCROLL_DrawScrollBar( hwnd, hdc, SB_CTL, g_tracking_info.hit_test, &g_tracking_info, TRUE, TRUE ); if (!wParam) EndPaint(hwnd, &ps); } break; -- 2.30.2
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Zhiyi Zhang