Mark Harmstone : comctl32: Draw hot parts of themed scrollbars.
Module: wine Branch: master Commit: a20c920bbdd31394220370c8aac695cb189b4cc0 URL: http://source.winehq.org/git/wine.git/?a=commit;h=a20c920bbdd31394220370c8aa... Author: Mark Harmstone <hellas(a)burntcomma.com> Date: Tue Mar 3 21:56:37 2015 +0000 comctl32: Draw hot parts of themed scrollbars. --- dlls/comctl32/theme_scrollbar.c | 195 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 195 insertions(+) diff --git a/dlls/comctl32/theme_scrollbar.c b/dlls/comctl32/theme_scrollbar.c index 5a44994..bb42267 100644 --- a/dlls/comctl32/theme_scrollbar.c +++ b/dlls/comctl32/theme_scrollbar.c @@ -48,6 +48,9 @@ enum SCROLL_HITTEST SCROLL_BOTTOM_ARROW /* Bottom or right arrow */ }; +static HWND tracking_win = 0; +static enum SCROLL_HITTEST tracking_hot_part = SCROLL_NOWHERE; + WINE_DEFAULT_DEBUG_CHANNEL(theme_scroll); static void calc_thumb_dimensions(unsigned int size, SCROLLINFO *si, unsigned int *thumbpos, unsigned int *thumbsize) @@ -149,6 +152,164 @@ static enum SCROLL_HITTEST hit_test(HWND hwnd, HTHEME theme, POINT pt) return SCROLL_BOTTOM_RECT; } +static void redraw_part(HWND hwnd, HTHEME theme, enum SCROLL_HITTEST part) +{ + DWORD style = GetWindowLongW(hwnd, GWL_STYLE); + BOOL vertical = style & SBS_VERT; + SIZE sz; + RECT r, partrect; + unsigned int size, upsize, downsize; + + if (part == SCROLL_NOWHERE) { /* redraw everything */ + InvalidateRect(hwnd, NULL, TRUE); + return; + } + + GetWindowRect(hwnd, &r); + OffsetRect(&r, -r.left, -r.top); + + if (vertical) { + size = r.bottom; + + if (FAILED(GetThemePartSize(theme, NULL, SBP_ARROWBTN, ABS_UPNORMAL, NULL, TS_DRAW, &sz))) { + WARN("Could not get up arrow size.\n"); + upsize = 0; + } else + upsize = sz.cy; + + if (FAILED(GetThemePartSize(theme, NULL, SBP_ARROWBTN, ABS_DOWNNORMAL, NULL, TS_DRAW, &sz))) { + WARN("Could not get down arrow size.\n"); + downsize = 0; + } else + downsize = sz.cy; + } else { + size = r.right; + + if (FAILED(GetThemePartSize(theme, NULL, SBP_ARROWBTN, ABS_LEFTNORMAL, NULL, TS_DRAW, &sz))) { + WARN("Could not get left arrow size.\n"); + upsize = 0; + } else + upsize = sz.cx; + + if (FAILED(GetThemePartSize(theme, NULL, SBP_ARROWBTN, ABS_RIGHTNORMAL, NULL, TS_DRAW, &sz))) { + WARN("Could not get right arrow size.\n"); + downsize = 0; + } else + downsize = sz.cx; + } + + if (size < SCROLL_MIN_RECT + upsize + downsize) + upsize = downsize = (size - SCROLL_MIN_RECT)/2; + + partrect = r; + + if (part == SCROLL_TOP_ARROW) { + if (vertical) + partrect.bottom = partrect.top + upsize; + else + partrect.right = partrect.left + upsize; + } else if (part == SCROLL_BOTTOM_ARROW) { + if (vertical) + partrect.top = partrect.bottom - downsize; + else + partrect.left = partrect.right - downsize; + } else { + unsigned int thumbpos, thumbsize; + SCROLLINFO si; + + si.cbSize = sizeof(si); + si.fMask = SIF_ALL; + if (!GetScrollInfo(hwnd, SB_CTL, &si)) { + WARN("GetScrollInfo failed.\n"); + return; + } + + calc_thumb_dimensions(size - upsize - downsize, &si, &thumbpos, &thumbsize); + + if (part == SCROLL_TOP_RECT) { + if (vertical) { + partrect.top = r.top + upsize; + partrect.bottom = partrect.top + thumbpos; + } else { + partrect.left = r.left + upsize; + partrect.right = partrect.left + thumbpos; + } + } else if (part == SCROLL_THUMB) { + if (vertical) { + partrect.top = r.top + upsize + thumbpos; + partrect.bottom = partrect.top + thumbsize; + } else { + partrect.left = r.left + upsize + thumbpos; + partrect.right = partrect.left + thumbsize; + } + } else if (part == SCROLL_BOTTOM_RECT) { + if (vertical) { + partrect.top = r.top + upsize + thumbpos + thumbsize; + partrect.bottom = r.bottom - downsize; + } else { + partrect.left = r.left + upsize + thumbpos + thumbsize; + partrect.right = r.right - downsize; + } + } + } + + InvalidateRect(hwnd, &partrect, TRUE); +} + +static void scroll_event(HWND hwnd, HTHEME theme, UINT msg, POINT pt) +{ + enum SCROLL_HITTEST hittest; + TRACKMOUSEEVENT tme; + + if (GetWindowLongW(hwnd, GWL_STYLE) & (SBS_SIZEGRIP | SBS_SIZEBOX)) + return; + + hittest = hit_test(hwnd, theme, pt); + + switch (msg) + { + case WM_MOUSEMOVE: + hittest = hit_test(hwnd, theme, pt); + tracking_win = hwnd; + break; + + case WM_MOUSELEAVE: + if (tracking_win == hwnd) { + hittest = SCROLL_NOWHERE; + } + break; + } + + tme.cbSize = sizeof(tme); + tme.dwFlags = TME_QUERY; + TrackMouseEvent(&tme); + + if (!(tme.dwFlags & TME_LEAVE) || tme.hwndTrack != hwnd) { + tme.dwFlags = TME_LEAVE; + tme.hwndTrack = hwnd; + TrackMouseEvent(&tme); + } + + if (tracking_win != hwnd && msg == WM_MOUSELEAVE) { + redraw_part(hwnd, theme, SCROLL_NOWHERE); + return; + } + + if (tracking_win == hwnd && hittest != tracking_hot_part) { + enum SCROLL_HITTEST oldhotpart = tracking_hot_part; + + tracking_hot_part = hittest; + + if (hittest != SCROLL_NOWHERE) + redraw_part(hwnd, theme, hittest); + else + tracking_win = 0; + + if (oldhotpart != SCROLL_NOWHERE) + redraw_part(hwnd, theme, oldhotpart); + } +} + static void paint_scrollbar(HWND hwnd, HTHEME theme) { HDC dc; @@ -197,6 +358,15 @@ static void paint_scrollbar(HWND hwnd, HTHEME theme) uppertrackstate = SCRBS_NORMAL; lowertrackstate = SCRBS_NORMAL; thumbstate = SCRBS_NORMAL; + + if (tracking_win == hwnd) { + if (tracking_hot_part == SCROLL_TOP_RECT) + uppertrackstate = SCRBS_HOT; + else if (tracking_hot_part == SCROLL_BOTTOM_RECT) + lowertrackstate = SCRBS_HOT; + else if (tracking_hot_part == SCROLL_THUMB) + thumbstate = SCRBS_HOT; + } } if (vertical) { @@ -209,6 +379,13 @@ static void paint_scrollbar(HWND hwnd, HTHEME theme) } else { uparrowstate = ABS_UPNORMAL; downarrowstate = ABS_DOWNNORMAL; + + if (tracking_win == hwnd) { + if (tracking_hot_part == SCROLL_TOP_ARROW) + uparrowstate = ABS_UPHOT; + else if (tracking_hot_part == SCROLL_BOTTOM_ARROW) + downarrowstate = ABS_DOWNHOT; + } } if (FAILED(GetThemePartSize(theme, dc, SBP_ARROWBTN, uparrowstate, NULL, TS_DRAW, &upsize))) { @@ -277,6 +454,13 @@ static void paint_scrollbar(HWND hwnd, HTHEME theme) } else { leftarrowstate = ABS_LEFTNORMAL; rightarrowstate = ABS_RIGHTNORMAL; + + if (tracking_win == hwnd) { + if (tracking_hot_part == SCROLL_TOP_ARROW) + leftarrowstate = ABS_LEFTHOT; + else if (tracking_hot_part == SCROLL_BOTTOM_ARROW) + rightarrowstate = ABS_RIGHTHOT; + } } if (FAILED(GetThemePartSize(theme, dc, SBP_ARROWBTN, leftarrowstate, NULL, TS_DRAW, &leftsize))) { @@ -348,6 +532,7 @@ LRESULT CALLBACK THEMING_ScrollbarSubclassProc (HWND hwnd, UINT msg, const WCHAR* themeClass = WC_SCROLLBARW; HTHEME theme; LRESULT result; + POINT pt; TRACE("(%p, 0x%x, %lu, %lu, %lu)\n", hwnd, msg, wParam, lParam, dwRefData); @@ -382,6 +567,16 @@ LRESULT CALLBACK THEMING_ScrollbarSubclassProc (HWND hwnd, UINT msg, paint_scrollbar(hwnd, theme); break; + case WM_MOUSEMOVE: + case WM_MOUSELEAVE: + theme = GetWindowTheme(hwnd); + if (!theme) return THEMING_CallOriginalClass(hwnd, msg, wParam, lParam); + + pt.x = (short)LOWORD(lParam); + pt.y = (short)HIWORD(lParam); + scroll_event(hwnd, theme, msg, pt); + break; + default: return THEMING_CallOriginalClass(hwnd, msg, wParam, lParam); }
participants (1)
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Alexandre Julliard