diff options
Diffstat (limited to 'src/gui_w32.c')
-rw-r--r-- | src/gui_w32.c | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/src/gui_w32.c b/src/gui_w32.c index c5564cd2ac..64acc76527 100644 --- a/src/gui_w32.c +++ b/src/gui_w32.c @@ -8151,6 +8151,34 @@ initialise_tabline(void) # endif } +/* + * Get tabpage_T from POINT. + */ + static tabpage_T * +GetTabFromPoint( + HWND hWnd, + POINT pt) +{ + tabpage_T *ptp = NULL; + + if (gui_mch_showing_tabline()) + { + TCHITTESTINFO htinfo; + htinfo.pt = pt; + /* ignore if a window under cusor is not tabcontrol. */ + if (s_tabhwnd == hWnd) + { + int idx = TabCtrl_HitTest(s_tabhwnd, &htinfo); + if (idx != -1) + ptp = find_tabpage(idx + 1); + } + } + return ptp; +} + +static POINT s_pt = {0, 0}; +static HCURSOR s_hCursor = NULL; + static LRESULT CALLBACK tabline_wndproc( HWND hwnd, @@ -8158,7 +8186,73 @@ tabline_wndproc( WPARAM wParam, LPARAM lParam) { + POINT pt; + tabpage_T *tp; + RECT rect; + int nCenter; + int idx0; + int idx1; + HandleMouseHide(uMsg, lParam); + + switch (uMsg) + { + case WM_LBUTTONDOWN: + { + s_pt.x = GET_X_LPARAM(lParam); + s_pt.y = GET_Y_LPARAM(lParam); + SetCapture(hwnd); + s_hCursor = GetCursor(); /* backup default cursor */ + break; + } + case WM_MOUSEMOVE: + if (GetCapture() == hwnd + && ((wParam & MK_LBUTTON)) != 0) + { + pt.x = GET_X_LPARAM(lParam); + pt.y = s_pt.y; + if (abs(pt.x - s_pt.x) > GetSystemMetrics(SM_CXDRAG)) + { + SetCursor(LoadCursor(NULL, IDC_SIZEWE)); + + tp = GetTabFromPoint(hwnd, pt); + if (tp != NULL) + { + idx0 = tabpage_index(curtab) - 1; + idx1 = tabpage_index(tp) - 1; + + TabCtrl_GetItemRect(hwnd, idx1, &rect); + nCenter = rect.left + (rect.right - rect.left) / 2; + + /* Check if the mouse cursor goes over the center of + * the next tab to prevent "flickering". */ + if ((idx0 < idx1) && (nCenter < pt.x)) + { + tabpage_move(idx1 + 1); + update_screen(0); + } + else if ((idx1 < idx0) && (pt.x < nCenter)) + { + tabpage_move(idx1); + update_screen(0); + } + } + } + } + break; + case WM_LBUTTONUP: + { + if (GetCapture() == hwnd) + { + SetCursor(s_hCursor); + ReleaseCapture(); + } + break; + } + default: + break; + } + return CallWindowProc(s_tabline_wndproc, hwnd, uMsg, wParam, lParam); } #endif |