Module: wine Branch: master Commit: d7c206972175f8b2eee90358e8c3f12c9973285b URL: http://source.winehq.org/git/wine.git/?a=commit;h=d7c206972175f8b2eee90358e8...
Author: Mark Harmstone hellas@burntcomma.com Date: Tue Mar 3 07:44:42 2015 +0000
comctl32: Paint themed scrollbars.
---
dlls/comctl32/theme_scrollbar.c | 231 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 231 insertions(+)
diff --git a/dlls/comctl32/theme_scrollbar.c b/dlls/comctl32/theme_scrollbar.c index ed2c051..9be8384 100644 --- a/dlls/comctl32/theme_scrollbar.c +++ b/dlls/comctl32/theme_scrollbar.c @@ -32,8 +32,232 @@ #include "comctl32.h" #include "wine/debug.h"
+/* Minimum size of the thumb in pixels */ +#define SCROLL_MIN_THUMB 6 + +/* Minimum size of the rectangle between the arrows */ +#define SCROLL_MIN_RECT 4 + WINE_DEFAULT_DEBUG_CHANNEL(theme_scroll);
+static void calc_thumb_dimensions(unsigned int size, SCROLLINFO *si, unsigned int *thumbpos, unsigned int *thumbsize) +{ + if (size <= SCROLL_MIN_RECT) + *thumbpos = *thumbsize = 0; + else if (si->nPage > si->nMax - si->nMin) + *thumbpos = *thumbsize = 0; + else { + if (si->nPage > 0) { + *thumbsize = MulDiv(size, si->nPage, si->nMax - si->nMin + 1); + if (*thumbsize < SCROLL_MIN_THUMB) *thumbsize = SCROLL_MIN_THUMB; + } + else *thumbsize = GetSystemMetrics(SM_CXVSCROLL); + + if (size < *thumbsize) + *thumbpos = *thumbsize = 0; + else { + int max = si->nMax - max(si->nPage - 1, 0); + size -= *thumbsize; + if (si->nMin >= max) + *thumbpos = 0; + else + *thumbpos = MulDiv(size, si->nTrackPos - si->nMin, max - si->nMin); + } + } +} + +static void paint_scrollbar(HWND hwnd, HTHEME theme) +{ + HDC dc; + PAINTSTRUCT ps; + RECT r; + DWORD style = GetWindowLongW(hwnd, GWL_STYLE); + BOOL vertical = style & SBS_VERT; + BOOL disabled = !IsWindowEnabled(hwnd); + + GetWindowRect(hwnd, &r); + OffsetRect(&r, -r.left, -r.top); + + dc = BeginPaint(hwnd, &ps); + + if (style & SBS_SIZEBOX || style & SBS_SIZEGRIP) { + int state; + + if (style & SBS_SIZEBOXTOPLEFTALIGN) + state = SZB_TOPLEFTALIGN; + else + state = SZB_RIGHTALIGN; + + DrawThemeBackground(theme, dc, SBP_SIZEBOX, state, &r, NULL); + } else { + SCROLLBARINFO sbi; + SCROLLINFO si; + unsigned int thumbpos, thumbsize; + int uppertrackstate, lowertrackstate, thumbstate; + RECT partrect, trackrect; + SIZE grippersize; + + sbi.cbSize = sizeof(sbi); + GetScrollBarInfo(hwnd, OBJID_CLIENT, &sbi); + + si.cbSize = sizeof(si); + si.fMask = SIF_ALL; + GetScrollInfo(hwnd, SB_CTL, &si); + + trackrect = r; + + if (disabled) { + uppertrackstate = SCRBS_DISABLED; + lowertrackstate = SCRBS_DISABLED; + thumbstate = SCRBS_DISABLED; + } else { + uppertrackstate = SCRBS_NORMAL; + lowertrackstate = SCRBS_NORMAL; + thumbstate = SCRBS_NORMAL; + } + + if (vertical) { + SIZE upsize, downsize; + int uparrowstate, downarrowstate; + + if (disabled) { + uparrowstate = ABS_UPDISABLED; + downarrowstate = ABS_DOWNDISABLED; + } else { + uparrowstate = ABS_UPNORMAL; + downarrowstate = ABS_DOWNNORMAL; + } + + if (FAILED(GetThemePartSize(theme, dc, SBP_ARROWBTN, uparrowstate, NULL, TS_DRAW, &upsize))) { + WARN("Could not get up arrow size.\n"); + return; + } + + if (FAILED(GetThemePartSize(theme, dc, SBP_ARROWBTN, downarrowstate, NULL, TS_DRAW, &downsize))) { + WARN("Could not get down arrow size.\n"); + return; + } + + if (r.bottom - r.top - upsize.cy - downsize.cy < SCROLL_MIN_RECT) + upsize.cy = downsize.cy = (r.bottom - r.top - SCROLL_MIN_RECT)/2; + + partrect = r; + partrect.bottom = partrect.top + upsize.cy; + DrawThemeBackground(theme, dc, SBP_ARROWBTN, uparrowstate, &partrect, NULL); + + trackrect.top = partrect.bottom; + + partrect.bottom = r.bottom; + partrect.top = partrect.bottom - downsize.cy; + DrawThemeBackground(theme, dc, SBP_ARROWBTN, downarrowstate, &partrect, NULL); + + trackrect.bottom = partrect.top; + + calc_thumb_dimensions(trackrect.bottom - trackrect.top, &si, &thumbpos, &thumbsize); + + if (thumbpos > 0) { + partrect.top = trackrect.top; + partrect.bottom = partrect.top + thumbpos; + + DrawThemeBackground(theme, dc, SBP_UPPERTRACKVERT, uppertrackstate, &partrect, NULL); + } + + if (thumbsize > 0) { + partrect.top = trackrect.top + thumbpos; + partrect.bottom = partrect.top + thumbsize; + + DrawThemeBackground(theme, dc, SBP_THUMBBTNVERT, thumbstate, &partrect, NULL); + + if (SUCCEEDED(GetThemePartSize(theme, dc, SBP_GRIPPERVERT, thumbstate, NULL, TS_DRAW, &grippersize))) { + MARGINS margins; + + if (SUCCEEDED(GetThemeMargins(theme, dc, SBP_THUMBBTNVERT, thumbstate, TMT_CONTENTMARGINS, &partrect, &margins))) { + if (grippersize.cy <= (thumbsize - margins.cyTopHeight - margins.cyBottomHeight)) + DrawThemeBackground(theme, dc, SBP_GRIPPERVERT, thumbstate, &partrect, NULL); + } + } + } + + if (thumbpos + thumbsize < trackrect.bottom - trackrect.top) { + partrect.bottom = trackrect.bottom; + partrect.top = trackrect.top + thumbsize + thumbpos; + + DrawThemeBackground(theme, dc, SBP_LOWERTRACKVERT, lowertrackstate, &partrect, NULL); + } + } else { + SIZE leftsize, rightsize; + int leftarrowstate, rightarrowstate; + + if (disabled) { + leftarrowstate = ABS_LEFTDISABLED; + rightarrowstate = ABS_RIGHTDISABLED; + } else { + leftarrowstate = ABS_LEFTNORMAL; + rightarrowstate = ABS_RIGHTNORMAL; + } + + if (FAILED(GetThemePartSize(theme, dc, SBP_ARROWBTN, leftarrowstate, NULL, TS_DRAW, &leftsize))) { + WARN("Could not get left arrow size.\n"); + return; + } + + if (FAILED(GetThemePartSize(theme, dc, SBP_ARROWBTN, rightarrowstate, NULL, TS_DRAW, &rightsize))) { + WARN("Could not get right arrow size.\n"); + return; + } + + if (r.right - r.left - leftsize.cx - rightsize.cx < SCROLL_MIN_RECT) + leftsize.cx = rightsize.cx = (r.right - r.left - SCROLL_MIN_RECT)/2; + + partrect = r; + partrect.right = partrect.left + leftsize.cx; + DrawThemeBackground(theme, dc, SBP_ARROWBTN, leftarrowstate, &partrect, NULL); + + trackrect.left = partrect.right; + + partrect.right = r.right; + partrect.left = partrect.right - rightsize.cx; + DrawThemeBackground(theme, dc, SBP_ARROWBTN, rightarrowstate, &partrect, NULL); + + trackrect.right = partrect.left; + + calc_thumb_dimensions(trackrect.right - trackrect.left, &si, &thumbpos, &thumbsize); + + if (thumbpos > 0) { + partrect.left = trackrect.left; + partrect.right = partrect.left + thumbpos; + + DrawThemeBackground(theme, dc, SBP_UPPERTRACKHORZ, uppertrackstate, &partrect, NULL); + } + + if (thumbsize > 0) { + partrect.left = trackrect.left + thumbpos; + partrect.right = partrect.left + thumbsize; + + DrawThemeBackground(theme, dc, SBP_THUMBBTNHORZ, thumbstate, &partrect, NULL); + + if (SUCCEEDED(GetThemePartSize(theme, dc, SBP_GRIPPERHORZ, thumbstate, NULL, TS_DRAW, &grippersize))) { + MARGINS margins; + + if (SUCCEEDED(GetThemeMargins(theme, dc, SBP_THUMBBTNHORZ, thumbstate, TMT_CONTENTMARGINS, &partrect, &margins))) { + if (grippersize.cx <= (thumbsize - margins.cxLeftWidth - margins.cxRightWidth)) + DrawThemeBackground(theme, dc, SBP_GRIPPERHORZ, thumbstate, &partrect, NULL); + } + } + } + + if (thumbpos + thumbsize < trackrect.right - trackrect.left) { + partrect.right = trackrect.right; + partrect.left = trackrect.left + thumbsize + thumbpos; + + DrawThemeBackground(theme, dc, SBP_LOWERTRACKHORZ, lowertrackstate, &partrect, NULL); + } + } + } + + EndPaint(hwnd, &ps); +} + LRESULT CALLBACK THEMING_ScrollbarSubclassProc (HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam, ULONG_PTR dwRefData) @@ -68,6 +292,13 @@ LRESULT CALLBACK THEMING_ScrollbarSubclassProc (HWND hwnd, UINT msg, * which will do the repaint. */ break;
+ case WM_PAINT: + theme = GetWindowTheme(hwnd); + if (!theme) return THEMING_CallOriginalClass(hwnd, msg, wParam, lParam); + + paint_scrollbar(hwnd, theme); + break; + default: return THEMING_CallOriginalClass(hwnd, msg, wParam, lParam); }