/* * Scrollbar control * * Copyright 1993 Martin Ayotte * Copyright 1994, 1996 Alexandre Julliard * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include "windef.h" #include "wingdi.h" #include "wine/winuser16.h" #include "controls.h" #include "win.h" #include "wine/debug.h" #include "user.h" #include "spy.h" WINE_DEFAULT_DEBUG_CHANNEL(scroll); typedef struct { INT CurVal; /* Current scroll-bar value */ INT MinVal; /* Minimum scroll-bar value */ INT MaxVal; /* Maximum scroll-bar value */ INT Page; /* Page size of scroll bar (Win32) */ UINT flags; /* EnableScrollBar flags */ } SCROLLBAR_INFO; static HBITMAP hUpArrow; static HBITMAP hDnArrow; static HBITMAP hLfArrow; static HBITMAP hRgArrow; static HBITMAP hUpArrowD; static HBITMAP hDnArrowD; static HBITMAP hLfArrowD; static HBITMAP hRgArrowD; static HBITMAP hUpArrowI; static HBITMAP hDnArrowI; static HBITMAP hLfArrowI; static HBITMAP hRgArrowI; #define TOP_ARROW(flags,pressed) \ (((flags)&ESB_DISABLE_UP) ? hUpArrowI : ((pressed) ? hUpArrowD:hUpArrow)) #define BOTTOM_ARROW(flags,pressed) \ (((flags)&ESB_DISABLE_DOWN) ? hDnArrowI : ((pressed) ? hDnArrowD:hDnArrow)) #define LEFT_ARROW(flags,pressed) \ (((flags)&ESB_DISABLE_LEFT) ? hLfArrowI : ((pressed) ? hLfArrowD:hLfArrow)) #define RIGHT_ARROW(flags,pressed) \ (((flags)&ESB_DISABLE_RIGHT) ? hRgArrowI : ((pressed) ? hRgArrowD:hRgArrow)) /* Minimum size of the rectangle between the arrows */ #define SCROLL_MIN_RECT 4 /* Minimum size of the thumb in pixels */ #define SCROLL_MIN_THUMB 6 /* Overlap between arrows and thumb */ #define SCROLL_ARROW_THUMB_OVERLAP ((TWEAK_WineLook == WIN31_LOOK) ? 1 : 0) /* Delay (in ms) before first repetition when holding the button down */ #define SCROLL_FIRST_DELAY 200 /* Delay (in ms) between scroll repetitions */ #define SCROLL_REPEAT_DELAY 50 /* Scroll timer id */ #define SCROLL_TIMER 0 /* Scroll-bar hit testing */ enum SCROLL_HITTEST { SCROLL_NOWHERE, /* Outside the scroll bar */ SCROLL_TOP_ARROW, /* Top or left arrow */ SCROLL_TOP_RECT, /* Rectangle between the top arrow and the thumb */ SCROLL_THUMB, /* Thumb rectangle */ SCROLL_BOTTOM_RECT, /* Rectangle between the thumb and the bottom arrow */ SCROLL_BOTTOM_ARROW /* Bottom or right arrow */ }; /* What to do after SCROLL_SetScrollInfo() */ #define SA_SSI_HIDE 0x0001 #define SA_SSI_SHOW 0x0002 #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; /* Is the moving thumb being displayed? */ static BOOL SCROLL_MovingThumb = FALSE; /* Local functions */ static BOOL SCROLL_ShowScrollBar( HWND hwnd, INT nBar, BOOL fShowH, BOOL fShowV ); static INT SCROLL_SetScrollInfo( HWND hwnd, INT nBar, const SCROLLINFO *info, INT *action ); static void SCROLL_DrawInterior_9x( HWND hwnd, HDC hdc, INT nBar, RECT *rect, INT arrowSize, INT thumbSize, INT thumbPos, UINT flags, BOOL vertical, BOOL top_selected, BOOL bottom_selected ); static LRESULT WINAPI ScrollBarWndProc( HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam ); /********************************************************************* * scrollbar class descriptor */ const struct builtin_class_descr SCROLL_builtin_class = { "ScrollBar", /* name */ CS_GLOBALCLASS | CS_DBLCLKS | CS_VREDRAW | CS_HREDRAW | CS_PARENTDC, /* style */ NULL, /* procA (winproc is Unicode only) */ ScrollBarWndProc, /* procW */ sizeof(SCROLLBAR_INFO), /* extra */ IDC_ARROWA, /* cursor */ 0 /* brush */ }; /*********************************************************************** * SCROLL_LoadBitmaps */ static void SCROLL_LoadBitmaps(void) { hUpArrow = LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_UPARROW) ); hDnArrow = LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_DNARROW) ); hLfArrow = LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_LFARROW) ); hRgArrow = LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_RGARROW) ); hUpArrowD = LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_UPARROWD) ); hDnArrowD = LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_DNARROWD) ); hLfArrowD = LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_LFARROWD) ); hRgArrowD = LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_RGARROWD) ); hUpArrowI = LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_UPARROWI) ); hDnArrowI = LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_DNARROWI) ); hLfArrowI = LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_LFARROWI) ); hRgArrowI = LoadBitmapA( 0, MAKEINTRESOURCEA(OBM_RGARROWI) ); } /*********************************************************************** * SCROLL_GetScrollInfo */ static SCROLLBAR_INFO *SCROLL_GetScrollInfo( HWND hwnd, INT nBar ) { SCROLLBAR_INFO *infoPtr; WND *wndPtr = WIN_FindWndPtr( hwnd ); if (!wndPtr) return NULL; switch(nBar) { case SB_HORZ: infoPtr = (SCROLLBAR_INFO *)wndPtr->pHScroll; break; case SB_VERT: infoPtr = (SCROLLBAR_INFO *)wndPtr->pVScroll; break; case SB_CTL: infoPtr = (SCROLLBAR_INFO *)wndPtr->wExtra; break; default: WIN_ReleaseWndPtr( wndPtr ); return NULL; } if (!infoPtr) /* Create the info structure if needed */ { if ((infoPtr = HeapAlloc( GetProcessHeap(), 0, sizeof(SCROLLBAR_INFO) ))) { infoPtr->MinVal = infoPtr->CurVal = infoPtr->Page = 0; infoPtr->MaxVal = 100; infoPtr->flags = ESB_ENABLE_BOTH; if (nBar == SB_HORZ) wndPtr->pHScroll = infoPtr; else wndPtr->pVScroll = infoPtr; } if (!hUpArrow) SCROLL_LoadBitmaps(); } WIN_ReleaseWndPtr( wndPtr ); return infoPtr; } /*********************************************************************** * SCROLL_GetScrollBarRect * * Compute the scroll bar rectangle, in drawing coordinates (i.e. client * coords for SB_CTL, window coords for SB_VERT and SB_HORZ). * 'arrowSize' returns the width or height of an arrow (depending on * the orientation of the scrollbar), 'thumbSize' returns the size of * the thumb, and 'thumbPos' returns the position of the thumb * relative to the left or to the top. * Return TRUE if the scrollbar is vertical, FALSE if horizontal. */ static BOOL SCROLL_GetScrollBarRect( HWND hwnd, INT nBar, RECT *lprect, INT *arrowSize, INT *thumbSize, INT *thumbPos ) { INT pixels; BOOL vertical; WND *wndPtr = WIN_FindWndPtr( hwnd ); switch(nBar) { case SB_HORZ: lprect->left = wndPtr->rectClient.left - wndPtr->rectWindow.left; lprect->top = wndPtr->rectClient.bottom - wndPtr->rectWindow.top; lprect->right = wndPtr->rectClient.right - wndPtr->rectWindow.left; lprect->bottom = lprect->top + GetSystemMetrics(SM_CYHSCROLL); if(wndPtr->dwStyle & WS_BORDER) { lprect->left--; lprect->right++; } else if(wndPtr->dwStyle & WS_VSCROLL) lprect->right++; vertical = FALSE; break; case SB_VERT: lprect->left = wndPtr->rectClient.right - wndPtr->rectWindow.left; lprect->top = wndPtr->rectClient.top - wndPtr->rectWindow.top; lprect->right = lprect->left + GetSystemMetrics(SM_CXVSCROLL); lprect->bottom = wndPtr->rectClient.bottom - wndPtr->rectWindow.top; if(wndPtr->dwStyle & WS_BORDER) { lprect->top--; lprect->bottom++; } else if(wndPtr->dwStyle & WS_HSCROLL) lprect->bottom++; vertical = TRUE; break; case SB_CTL: GetClientRect( hwnd, lprect ); vertical = ((wndPtr->dwStyle & SBS_VERT) != 0); break; default: WIN_ReleaseWndPtr(wndPtr); return FALSE; } if (vertical) pixels = lprect->bottom - lprect->top; else pixels = lprect->right - lprect->left; if (pixels <= 2*GetSystemMetrics(SM_CXVSCROLL) + SCROLL_MIN_RECT) { if (pixels > SCROLL_MIN_RECT) *arrowSize = (pixels - SCROLL_MIN_RECT) / 2; else *arrowSize = 0; *thumbPos = *thumbSize = 0; } else { SCROLLBAR_INFO *info = SCROLL_GetScrollInfo( hwnd, nBar ); *arrowSize = GetSystemMetrics(SM_CXVSCROLL); pixels -= (2 * (GetSystemMetrics(SM_CXVSCROLL) - SCROLL_ARROW_THUMB_OVERLAP)); if (info->Page) { *thumbSize = MulDiv(pixels,info->Page,(info->MaxVal-info->MinVal+1)); if (*thumbSize < SCROLL_MIN_THUMB) *thumbSize = SCROLL_MIN_THUMB; } else *thumbSize = GetSystemMetrics(SM_CXVSCROLL); if (((pixels -= *thumbSize ) < 0) || ((info->flags & ESB_DISABLE_BOTH) == ESB_DISABLE_BOTH)) { /* Rectangle too small or scrollbar disabled -> no thumb */ *thumbPos = *thumbSize = 0; } else { INT max = info->MaxVal - max( info->Page-1, 0 ); if (info->MinVal >= max) *thumbPos = *arrowSize - SCROLL_ARROW_THUMB_OVERLAP; else *thumbPos = *arrowSize - SCROLL_ARROW_THUMB_OVERLAP + MulDiv(pixels, (info->CurVal-info->MinVal),(max - info->MinVal)); } } WIN_ReleaseWndPtr(wndPtr); return vertical; } /*********************************************************************** * SCROLL_GetThumbVal * * Compute the current scroll position based on the thumb position in pixels * from the top of the scroll-bar. */ static UINT SCROLL_GetThumbVal( SCROLLBAR_INFO *infoPtr, RECT *rect, BOOL vertical, INT pos ) { INT thumbSize; INT pixels = vertical ? rect->bottom-rect->top : rect->right-rect->left; if ((pixels -= 2*(GetSystemMetrics(SM_CXVSCROLL) - SCROLL_ARROW_THUMB_OVERLAP)) <= 0) return infoPtr->MinVal; if (infoPtr->Page) { thumbSize = MulDiv(pixels,infoPtr->Page,(infoPtr->MaxVal-infoPtr->MinVal+1)); if (thumbSize < SCROLL_MIN_THUMB) thumbSize = SCROLL_MIN_THUMB; } else thumbSize = GetSystemMetrics(SM_CXVSCROLL); if ((pixels -= thumbSize) <= 0) return infoPtr->MinVal; pos = max( 0, pos - (GetSystemMetrics(SM_CXVSCROLL) - SCROLL_ARROW_THUMB_OVERLAP) ); if (pos > pixels) pos = pixels; if (!infoPtr->Page) pos *= infoPtr->MaxVal - infoPtr->MinVal; else pos *= infoPtr->MaxVal - infoPtr->MinVal - infoPtr->Page + 1; return infoPtr->MinVal + ((pos + pixels / 2) / pixels); } /*********************************************************************** * SCROLL_PtInRectEx */ static BOOL SCROLL_PtInRectEx( LPRECT lpRect, POINT pt, BOOL vertical ) { RECT rect = *lpRect; if (vertical) { rect.left -= lpRect->right - lpRect->left; rect.right += lpRect->right - lpRect->left; } else { rect.top -= lpRect->bottom - lpRect->top; rect.bottom += lpRect->bottom - lpRect->top; } return PtInRect( &rect, pt ); } /*********************************************************************** * SCROLL_ClipPos */ static POINT SCROLL_ClipPos( LPRECT lpRect, POINT pt ) { if( pt.x < lpRect->left ) pt.x = lpRect->left; else if( pt.x > lpRect->right ) pt.x = lpRect->right; if( pt.y < lpRect->top ) pt.y = lpRect->top; else if( pt.y > lpRect->bottom ) pt.y = lpRect->bottom; return pt; } /*********************************************************************** * SCROLL_HitTest * * Scroll-bar hit testing (don't confuse this with WM_NCHITTEST!). */ static enum SCROLL_HITTEST SCROLL_HitTest( HWND hwnd, INT nBar, POINT pt, BOOL bDragging ) { INT arrowSize, thumbSize, thumbPos; RECT rect; BOOL vertical = SCROLL_GetScrollBarRect( hwnd, nBar, &rect, &arrowSize, &thumbSize, &thumbPos ); if ( (bDragging && !SCROLL_PtInRectEx( &rect, pt, vertical )) || (!PtInRect( &rect, pt )) ) return SCROLL_NOWHERE; if (vertical) { if (pt.y < rect.top + arrowSize) return SCROLL_TOP_ARROW; if (pt.y >= rect.bottom - arrowSize) return SCROLL_BOTTOM_ARROW; if (!thumbPos) return SCROLL_TOP_RECT; pt.y -= rect.top; if (pt.y < thumbPos) return SCROLL_TOP_RECT; if (pt.y >= thumbPos + thumbSize) return SCROLL_BOTTOM_RECT; } else /* horizontal */ { if (pt.x < rect.left + arrowSize) return SCROLL_TOP_ARROW; if (pt.x >= rect.right - arrowSize) return SCROLL_BOTTOM_ARROW; if (!thumbPos) return SCROLL_TOP_RECT; pt.x -= rect.left; if (pt.x < thumbPos) return SCROLL_TOP_RECT; if (pt.x >= thumbPos + thumbSize) return SCROLL_BOTTOM_RECT; } return SCROLL_THUMB; } /*********************************************************************** * SCROLL_DrawArrows * * Draw the scroll bar arrows. */ static void SCROLL_DrawArrows_9x( HDC hdc, SCROLLBAR_INFO *infoPtr, RECT *rect, INT arrowSize, BOOL vertical, BOOL top_pressed, BOOL bottom_pressed ) { RECT r; r = *rect; if( vertical ) r.bottom = r.top + arrowSize; else r.right = r.left + arrowSize; DrawFrameControl( hdc, &r, DFC_SCROLL, (vertical ? DFCS_SCROLLUP : DFCS_SCROLLLEFT) | (top_pressed ? (DFCS_PUSHED | DFCS_FLAT) : 0 ) | (infoPtr->flags&ESB_DISABLE_LTUP ? DFCS_INACTIVE : 0 ) ); r = *rect; if( vertical ) r.top = r.bottom-arrowSize; else r.left = r.right-arrowSize; DrawFrameControl( hdc, &r, DFC_SCROLL, (vertical ? DFCS_SCROLLDOWN : DFCS_SCROLLRIGHT) | (bottom_pressed ? (DFCS_PUSHED | DFCS_FLAT) : 0 ) | (infoPtr->flags&ESB_DISABLE_RTDN ? DFCS_INACTIVE : 0) ); } static void SCROLL_DrawArrows_31( HDC hdc, SCROLLBAR_INFO *infoPtr, RECT *rect, INT arrowSize, BOOL vertical, BOOL top_pressed, BOOL bottom_pressed ) { HDC hdcMem = CreateCompatibleDC( hdc ); HBITMAP hbmpPrev = SelectObject( hdcMem, vertical ? TOP_ARROW(infoPtr->flags, top_pressed) : LEFT_ARROW(infoPtr->flags, top_pressed)); SetStretchBltMode( hdc, STRETCH_DELETESCANS ); StretchBlt( hdc, rect->left, rect->top, vertical ? rect->right-rect->left : arrowSize, vertical ? arrowSize : rect->bottom-rect->top, hdcMem, 0, 0, GetSystemMetrics(SM_CXVSCROLL),GetSystemMetrics(SM_CYHSCROLL), SRCCOPY ); SelectObject( hdcMem, vertical ? BOTTOM_ARROW( infoPtr->flags, bottom_pressed ) : RIGHT_ARROW( infoPtr->flags, bottom_pressed ) ); if (vertical) StretchBlt( hdc, rect->left, rect->bottom - arrowSize, rect->right - rect->left, arrowSize, hdcMem, 0, 0, GetSystemMetrics(SM_CXVSCROLL),GetSystemMetrics(SM_CYHSCROLL), SRCCOPY ); else StretchBlt( hdc, rect->right - arrowSize, rect->top, arrowSize, rect->bottom - rect->top, hdcMem, 0, 0, GetSystemMetrics(SM_CXVSCROLL), GetSystemMetrics(SM_CYHSCROLL), SRCCOPY ); SelectObject( hdcMem, hbmpPrev ); DeleteDC( hdcMem ); } static void SCROLL_DrawArrows( HDC hdc, SCROLLBAR_INFO *infoPtr, RECT *rect, INT arrowSize, BOOL vertical, BOOL top_pressed, BOOL bottom_pressed ) { if( TWEAK_WineLook == WIN31_LOOK ) SCROLL_DrawArrows_31( hdc, infoPtr, rect, arrowSize, vertical, top_pressed,bottom_pressed ); else SCROLL_DrawArrows_9x( hdc, infoPtr, rect, arrowSize, vertical, top_pressed,bottom_pressed ); } /*********************************************************************** * SCROLL_DrawMovingThumb * * Draw the moving thumb rectangle. */ static void SCROLL_DrawMovingThumb_31( HDC hdc, RECT *rect, BOOL vertical, INT arrowSize, INT thumbSize ) { RECT r = *rect; if (vertical) { r.top += SCROLL_TrackingPos; if (r.top < rect->top + arrowSize - SCROLL_ARROW_THUMB_OVERLAP) r.top = rect->top + arrowSize - SCROLL_ARROW_THUMB_OVERLAP; if (r.top + thumbSize > rect->bottom - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP)) r.top = rect->bottom - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP) - thumbSize; r.bottom = r.top + thumbSize; } else { r.left += SCROLL_TrackingPos; if (r.left < rect->left + arrowSize - SCROLL_ARROW_THUMB_OVERLAP) r.left = rect->left + arrowSize - SCROLL_ARROW_THUMB_OVERLAP; if (r.left + thumbSize > rect->right - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP)) r.left = rect->right - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP) - thumbSize; r.right = r.left + thumbSize; } DrawFocusRect( hdc, &r ); SCROLL_MovingThumb = !SCROLL_MovingThumb; } static void SCROLL_DrawMovingThumb_9x( HDC hdc, RECT *rect, BOOL vertical, INT arrowSize, INT thumbSize ) { INT pos = SCROLL_TrackingPos; INT max_size; if( vertical ) max_size = rect->bottom - rect->top; else max_size = rect->right - rect->left; max_size -= (arrowSize-SCROLL_ARROW_THUMB_OVERLAP) + thumbSize; if( pos < (arrowSize-SCROLL_ARROW_THUMB_OVERLAP) ) pos = (arrowSize-SCROLL_ARROW_THUMB_OVERLAP); else if( pos > max_size ) pos = max_size; SCROLL_DrawInterior_9x( SCROLL_TrackingWin, hdc, SCROLL_TrackingBar, rect, arrowSize, thumbSize, pos, 0, vertical, FALSE, FALSE ); SCROLL_MovingThumb = !SCROLL_MovingThumb; } static void SCROLL_DrawMovingThumb( HDC hdc, RECT *rect, BOOL vertical, INT arrowSize, INT thumbSize ) { if( TWEAK_WineLook == WIN31_LOOK ) SCROLL_DrawMovingThumb_31( hdc, rect, vertical, arrowSize, thumbSize ); else SCROLL_DrawMovingThumb_9x( hdc, rect, vertical, arrowSize, thumbSize ); } /*********************************************************************** * SCROLL_DrawInterior * * Draw the scroll bar interior (everything except the arrows). */ static void SCROLL_DrawInterior_9x( HWND hwnd, HDC hdc, INT nBar, RECT *rect, INT arrowSize, INT thumbSize, INT thumbPos, UINT flags, BOOL vertical, BOOL top_selected, BOOL bottom_selected ) { RECT r; HPEN hSavePen; HBRUSH hSaveBrush,hBrush; /* Only scrollbar controls send WM_CTLCOLORSCROLLBAR. * The window-owned scrollbars need to call DEFWND_ControlColor * to correctly setup default scrollbar colors */ if (nBar == SB_CTL) { hBrush = (HBRUSH)SendMessageA( GetParent(hwnd), WM_CTLCOLORSCROLLBAR, (WPARAM)hdc,(LPARAM)hwnd); } else { hBrush = DEFWND_ControlColor( hdc, CTLCOLOR_SCROLLBAR ); } hSavePen = SelectObject( hdc, SYSCOLOR_GetPen(COLOR_WINDOWFRAME) ); hSaveBrush = SelectObject( hdc, hBrush ); /* Calculate the scroll rectangle */ r = *rect; if (vertical) { r.top += arrowSize - SCROLL_ARROW_THUMB_OVERLAP; r.bottom -= (arrowSize - SCROLL_ARROW_THUMB_OVERLAP); } else { r.left += arrowSize - SCROLL_ARROW_THUMB_OVERLAP; r.right -= (arrowSize - SCROLL_ARROW_THUMB_OVERLAP); } /* Draw the scroll rectangles and thumb */ if (!thumbPos) /* No thumb to draw */ { PatBlt( hdc, r.left, r.top, r.right - r.left, r.bottom - r.top, PATCOPY ); /* cleanup and return */ SelectObject( hdc, hSavePen ); SelectObject( hdc, hSaveBrush ); return; } if (vertical) { PatBlt( hdc, r.left, r.top, r.right - r.left, thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP), top_selected ? 0x0f0000 : PATCOPY ); r.top += thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP); PatBlt( hdc, r.left, r.top + thumbSize, r.right - r.left, r.bottom - r.top - thumbSize, bottom_selected ? 0x0f0000 : PATCOPY ); r.bottom = r.top + thumbSize; } else /* horizontal */ { PatBlt( hdc, r.left, r.top, thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP), r.bottom - r.top, top_selected ? 0x0f0000 : PATCOPY ); r.left += thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP); PatBlt( hdc, r.left + thumbSize, r.top, r.right - r.left - thumbSize, r.bottom - r.top, bottom_selected ? 0x0f0000 : PATCOPY ); r.right = r.left + thumbSize; } /* Draw the thumb */ DrawEdge( hdc, &r, EDGE_RAISED, BF_RECT | BF_MIDDLE ); /* cleanup */ SelectObject( hdc, hSavePen ); SelectObject( hdc, hSaveBrush ); } static void SCROLL_DrawInterior( HWND hwnd, HDC hdc, INT nBar, RECT *rect, INT arrowSize, INT thumbSize, INT thumbPos, UINT flags, BOOL vertical, BOOL top_selected, BOOL bottom_selected ) { RECT r; HPEN hSavePen; HBRUSH hSaveBrush,hBrush; BOOL Save_SCROLL_MovingThumb = SCROLL_MovingThumb; if (Save_SCROLL_MovingThumb && (SCROLL_TrackingWin == hwnd) && (SCROLL_TrackingBar == nBar)) SCROLL_DrawMovingThumb( hdc, rect, vertical, arrowSize, thumbSize ); /* Select the correct brush and pen */ if (TWEAK_WineLook == WIN31_LOOK && (flags & ESB_DISABLE_BOTH) == ESB_DISABLE_BOTH) { /* This ought to be the color of the parent window */ hBrush = GetSysColorBrush(COLOR_WINDOW); } else { /* Only scrollbar controls send WM_CTLCOLORSCROLLBAR. * The window-owned scrollbars need to call DEFWND_ControlColor * to correctly setup default scrollbar colors */ if (nBar == SB_CTL) { hBrush = (HBRUSH)SendMessageA( GetParent(hwnd), WM_CTLCOLORSCROLLBAR, (WPARAM)hdc,(LPARAM)hwnd); } else { hBrush = DEFWND_ControlColor( hdc, CTLCOLOR_SCROLLBAR ); } } hSavePen = SelectObject( hdc, SYSCOLOR_GetPen(COLOR_WINDOWFRAME) ); hSaveBrush = SelectObject( hdc, hBrush ); /* Calculate the scroll rectangle */ r = *rect; if (vertical) { r.top += arrowSize - SCROLL_ARROW_THUMB_OVERLAP; r.bottom -= (arrowSize - SCROLL_ARROW_THUMB_OVERLAP); } else { r.left += arrowSize - SCROLL_ARROW_THUMB_OVERLAP; r.right -= (arrowSize - SCROLL_ARROW_THUMB_OVERLAP); } /* Draw the scroll bar frame */ /* Only draw outline if Win 3.1. Mar 24, 1999 - Ronald B. Cemer */ if (TWEAK_WineLook == WIN31_LOOK) Rectangle( hdc, r.left, r.top, r.right, r.bottom ); /* Draw the scroll rectangles and thumb */ if (!thumbPos) /* No thumb to draw */ { INT offset = (TWEAK_WineLook > WIN31_LOOK) ? 0 : 1; PatBlt( hdc, r.left+offset, r.top+offset, r.right - r.left - 2*offset, r.bottom - r.top - 2*offset, PATCOPY ); /* cleanup and return */ SelectObject( hdc, hSavePen ); SelectObject( hdc, hSaveBrush ); return; } if (vertical) { INT offset = (TWEAK_WineLook == WIN31_LOOK) ? 1 : 0; PatBlt( hdc, r.left + offset, r.top + offset, r.right - r.left - offset*2, thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP) - offset, top_selected ? 0x0f0000 : PATCOPY ); r.top += thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP); PatBlt( hdc, r.left + offset, r.top + thumbSize, r.right - r.left - offset*2, r.bottom - r.top - thumbSize - offset, bottom_selected ? 0x0f0000 : PATCOPY ); r.bottom = r.top + thumbSize; } else /* horizontal */ { INT offset = (TWEAK_WineLook == WIN31_LOOK) ? 1 : 0; PatBlt( hdc, r.left + offset, r.top + offset, thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP), r.bottom - r.top - offset*2, top_selected ? 0x0f0000 : PATCOPY ); r.left += thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP); PatBlt( hdc, r.left + thumbSize, r.top + offset, r.right - r.left - thumbSize - offset, r.bottom - r.top - offset*2, bottom_selected ? 0x0f0000 : PATCOPY ); r.right = r.left + thumbSize; } /* Draw the thumb */ SelectObject( hdc, GetSysColorBrush(COLOR_BTNFACE) ); if (TWEAK_WineLook == WIN31_LOOK) { Rectangle( hdc, r.left, r.top, r.right, r.bottom ); r.top++, r.left++; } else { Rectangle( hdc, r.left+1, r.top+1, r.right-1, r.bottom-1 ); } DrawEdge( hdc, &r, EDGE_RAISED, BF_RECT ); if (Save_SCROLL_MovingThumb && (SCROLL_TrackingWin == hwnd) && (SCROLL_TrackingBar == nBar)) SCROLL_DrawMovingThumb( hdc, rect, vertical, arrowSize, thumbSize ); /* cleanup */ SelectObject( hdc, hSavePen ); SelectObject( hdc, hSaveBrush ); } /*********************************************************************** * SCROLL_DrawScrollBar * * Redraw the whole scrollbar. */ void SCROLL_DrawScrollBar( HWND hwnd, HDC hdc, INT nBar, BOOL arrows, BOOL interior ) { INT arrowSize, thumbSize, thumbPos; RECT rect; BOOL vertical; WND *wndPtr = WIN_FindWndPtr( hwnd ); SCROLLBAR_INFO *infoPtr = SCROLL_GetScrollInfo( hwnd, nBar ); BOOL Save_SCROLL_MovingThumb = SCROLL_MovingThumb; if (!wndPtr || !infoPtr || ((nBar == SB_VERT) && !(wndPtr->dwStyle & WS_VSCROLL)) || ((nBar == SB_HORZ) && !(wndPtr->dwStyle & WS_HSCROLL))) goto END; if (!WIN_IsWindowDrawable( hwnd, FALSE )) goto END; hwnd = wndPtr->hwndSelf; /* make it a full handle */ vertical = SCROLL_GetScrollBarRect( hwnd, nBar, &rect, &arrowSize, &thumbSize, &thumbPos ); /* do not draw if the scrollbar rectangle is empty */ if(IsRectEmpty(&rect)) goto END; if (Save_SCROLL_MovingThumb && (SCROLL_TrackingWin == hwnd) && (SCROLL_TrackingBar == nBar)) SCROLL_DrawMovingThumb( hdc, &rect, vertical, arrowSize, thumbSize ); /* Draw the arrows */ if (arrows && arrowSize) { if( vertical == SCROLL_trackVertical && GetCapture() == hwnd ) SCROLL_DrawArrows( hdc, infoPtr, &rect, arrowSize, vertical, (SCROLL_trackHitTest == SCROLL_TOP_ARROW), (SCROLL_trackHitTest == SCROLL_BOTTOM_ARROW) ); else SCROLL_DrawArrows( hdc, infoPtr, &rect, arrowSize, vertical, FALSE, FALSE ); } if( interior ) SCROLL_DrawInterior( hwnd, hdc, nBar, &rect, arrowSize, thumbSize, thumbPos, infoPtr->flags, vertical, FALSE, FALSE ); if (Save_SCROLL_MovingThumb && (SCROLL_TrackingWin == hwnd) && (SCROLL_TrackingBar == nBar)) SCROLL_DrawMovingThumb( hdc, &rect, vertical, arrowSize, thumbSize ); /* if scroll bar has focus, reposition the caret */ if(hwnd==GetFocus() && (nBar==SB_CTL)) { if (!vertical) { SetCaretPos(thumbPos+1, rect.top+1); } else { SetCaretPos(rect.top+1, thumbPos+1); } } END: WIN_ReleaseWndPtr(wndPtr); } /*********************************************************************** * SCROLL_RefreshScrollBar * * Repaint the scroll bar interior after a SetScrollRange() or * SetScrollPos() call. */ static void SCROLL_RefreshScrollBar( HWND hwnd, INT nBar, BOOL arrows, BOOL interior ) { HDC hdc = GetDCEx( hwnd, 0, DCX_CACHE | ((nBar == SB_CTL) ? 0 : DCX_WINDOW) ); if (!hdc) return; SCROLL_DrawScrollBar( hwnd, hdc, nBar, arrows, interior ); ReleaseDC( hwnd, hdc ); } /*********************************************************************** * SCROLL_HandleKbdEvent * * Handle a keyboard event (only for SB_CTL scrollbars). */ static void SCROLL_HandleKbdEvent( HWND hwnd, WPARAM wParam ) { WPARAM msg; switch(wParam) { case VK_PRIOR: msg = SB_PAGEUP; break; case VK_NEXT: msg = SB_PAGEDOWN; break; case VK_HOME: msg = SB_TOP; break; case VK_END: msg = SB_BOTTOM; break; case VK_UP: msg = SB_LINEUP; break; case VK_DOWN: msg = SB_LINEDOWN; break; default: return; } SendMessageW( GetParent(hwnd), (GetWindowLongA( hwnd, GWL_STYLE ) & SBS_VERT) ? WM_VSCROLL : WM_HSCROLL, msg, (LPARAM)hwnd ); } /*********************************************************************** * SCROLL_HandleScrollEvent * * Handle a mouse or timer event for the scrollbar. * 'pt' is the location of the mouse event in client (for SB_CTL) or * windows coordinates. */ static void SCROLL_HandleScrollEvent( HWND hwnd, INT nBar, UINT msg, POINT pt) { /* Previous mouse position for timer events */ static POINT prevPt; /* Thumb position when tracking started. */ static UINT trackThumbPos; /* Position in the scroll-bar of the last button-down event. */ static INT lastClickPos; /* Position in the scroll-bar of the last mouse event. */ static INT lastMousePos; enum SCROLL_HITTEST hittest; HWND hwndOwner, hwndCtl; BOOL vertical; INT arrowSize, thumbSize, thumbPos; RECT rect; HDC hdc; SCROLLBAR_INFO *infoPtr = SCROLL_GetScrollInfo( hwnd, nBar ); if (!infoPtr) return; if ((SCROLL_trackHitTest == SCROLL_NOWHERE) && (msg != WM_LBUTTONDOWN)) return; hdc = GetDCEx( hwnd, 0, DCX_CACHE | ((nBar == SB_CTL) ? 0 : DCX_WINDOW)); vertical = SCROLL_GetScrollBarRect( hwnd, nBar, &rect, &arrowSize, &thumbSize, &thumbPos ); hwndOwner = (nBar == SB_CTL) ? GetParent(hwnd) : hwnd; hwndCtl = (nBar == SB_CTL) ? hwnd : 0; switch(msg) { 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 ); lastClickPos = vertical ? (pt.y - rect.top) : (pt.x - rect.left); lastMousePos = lastClickPos; trackThumbPos = thumbPos; prevPt = pt; if (nBar == SB_CTL && (GetWindowLongA(hwnd, GWL_STYLE) & WS_TABSTOP)) SetFocus( hwnd ); SetCapture( hwnd ); break; case WM_MOUSEMOVE: hittest = SCROLL_HitTest( hwnd, nBar, pt, TRUE ); prevPt = pt; break; case WM_LBUTTONUP: hittest = SCROLL_NOWHERE; ReleaseCapture(); /* if scrollbar has focus, show back caret */ if (hwnd==GetFocus()) ShowCaret(hwnd); break; case WM_SYSTIMER: pt = prevPt; hittest = SCROLL_HitTest( hwnd, nBar, pt, FALSE ); break; default: return; /* Should never happen */ } TRACE("Event: hwnd=%04x bar=%d msg=%s pt=%ld,%ld hit=%d\n", hwnd, nBar, SPY_GetMsgName(msg,hwnd), pt.x, pt.y, hittest ); switch(SCROLL_trackHitTest) { case SCROLL_NOWHERE: /* No tracking in progress */ break; case SCROLL_TOP_ARROW: SCROLL_DrawArrows( hdc, infoPtr, &rect, arrowSize, vertical, (hittest == SCROLL_trackHitTest), FALSE ); if (hittest == SCROLL_trackHitTest) { if ((msg == WM_LBUTTONDOWN) || (msg == WM_SYSTIMER)) { SendMessageA( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL, SB_LINEUP, (LPARAM)hwndCtl ); } SetSystemTimer( hwnd, SCROLL_TIMER, (msg == WM_LBUTTONDOWN) ? SCROLL_FIRST_DELAY : SCROLL_REPEAT_DELAY, (TIMERPROC)0 ); } else KillSystemTimer( hwnd, SCROLL_TIMER ); break; case SCROLL_TOP_RECT: SCROLL_DrawInterior( hwnd, hdc, nBar, &rect, arrowSize, thumbSize, thumbPos, infoPtr->flags, vertical, (hittest == SCROLL_trackHitTest), FALSE ); if (hittest == SCROLL_trackHitTest) { if ((msg == WM_LBUTTONDOWN) || (msg == WM_SYSTIMER)) { SendMessageA( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL, SB_PAGEUP, (LPARAM)hwndCtl ); } SetSystemTimer( hwnd, SCROLL_TIMER, (msg == WM_LBUTTONDOWN) ? SCROLL_FIRST_DELAY : SCROLL_REPEAT_DELAY, (TIMERPROC)0 ); } else KillSystemTimer( hwnd, SCROLL_TIMER ); break; case SCROLL_THUMB: if (msg == WM_LBUTTONDOWN) { SCROLL_TrackingWin = hwnd; SCROLL_TrackingBar = nBar; SCROLL_TrackingPos = trackThumbPos + lastMousePos - lastClickPos; if (!SCROLL_MovingThumb) SCROLL_DrawMovingThumb(hdc, &rect, vertical, arrowSize, thumbSize); } else if (msg == WM_LBUTTONUP) { if (SCROLL_MovingThumb) SCROLL_DrawMovingThumb(hdc, &rect, vertical, arrowSize, thumbSize); SCROLL_TrackingWin = 0; SCROLL_DrawInterior( hwnd, hdc, nBar, &rect, arrowSize, thumbSize, thumbPos, infoPtr->flags, vertical, FALSE, FALSE ); } else /* WM_MOUSEMOVE */ { UINT pos; if (!SCROLL_PtInRectEx( &rect, pt, vertical )) pos = lastClickPos; else { pt = SCROLL_ClipPos( &rect, pt ); pos = vertical ? (pt.y - rect.top) : (pt.x - rect.left); } if ( (pos != lastMousePos) || (!SCROLL_MovingThumb) ) { if (SCROLL_MovingThumb) SCROLL_DrawMovingThumb( hdc, &rect, vertical, arrowSize, thumbSize ); lastMousePos = pos; SCROLL_TrackingPos = trackThumbPos + pos - lastClickPos; SCROLL_TrackingVal = SCROLL_GetThumbVal( infoPtr, &rect, vertical, SCROLL_TrackingPos ); SendMessageA( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL, MAKEWPARAM( SB_THUMBTRACK, SCROLL_TrackingVal), (LPARAM)hwndCtl ); if (!SCROLL_MovingThumb) SCROLL_DrawMovingThumb( hdc, &rect, vertical, arrowSize, thumbSize ); } } break; case SCROLL_BOTTOM_RECT: SCROLL_DrawInterior( hwnd, hdc, nBar, &rect, arrowSize, thumbSize, thumbPos, infoPtr->flags, vertical, FALSE, (hittest == SCROLL_trackHitTest) ); if (hittest == SCROLL_trackHitTest) { if ((msg == WM_LBUTTONDOWN) || (msg == WM_SYSTIMER)) { SendMessageA( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL, SB_PAGEDOWN, (LPARAM)hwndCtl ); } SetSystemTimer( hwnd, SCROLL_TIMER, (msg == WM_LBUTTONDOWN) ? SCROLL_FIRST_DELAY : SCROLL_REPEAT_DELAY, (TIMERPROC)0 ); } else KillSystemTimer( hwnd, SCROLL_TIMER ); break; case SCROLL_BOTTOM_ARROW: SCROLL_DrawArrows( hdc, infoPtr, &rect, arrowSize, vertical, FALSE, (hittest == SCROLL_trackHitTest) ); if (hittest == SCROLL_trackHitTest) { if ((msg == WM_LBUTTONDOWN) || (msg == WM_SYSTIMER)) { SendMessageA( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL, SB_LINEDOWN, (LPARAM)hwndCtl ); } SetSystemTimer( hwnd, SCROLL_TIMER, (msg == WM_LBUTTONDOWN) ? SCROLL_FIRST_DELAY : SCROLL_REPEAT_DELAY, (TIMERPROC)0 ); } else KillSystemTimer( hwnd, SCROLL_TIMER ); break; } if (msg == WM_LBUTTONUP) { hittest = SCROLL_trackHitTest; SCROLL_trackHitTest = SCROLL_NOWHERE; /* Terminate tracking */ if (hittest == SCROLL_THUMB) { UINT val = SCROLL_GetThumbVal( infoPtr, &rect, vertical, trackThumbPos + lastMousePos - lastClickPos ); SendMessageA( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL, MAKEWPARAM( SB_THUMBPOSITION, val ), (LPARAM)hwndCtl ); } else SendMessageA( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL, SB_ENDSCROLL, (LPARAM)hwndCtl ); } ReleaseDC( hwnd, hdc ); } /*********************************************************************** * SCROLL_TrackScrollBar * * Track a mouse button press on a scroll-bar. * pt is in screen-coordinates for non-client scroll bars. */ void SCROLL_TrackScrollBar( HWND hwnd, INT scrollbar, POINT pt ) { MSG msg; INT xoffset = 0, yoffset = 0; if (scrollbar != SB_CTL) { WND *wndPtr = WIN_GetPtr( hwnd ); if (!wndPtr || wndPtr == WND_OTHER_PROCESS) return; xoffset = wndPtr->rectClient.left - wndPtr->rectWindow.left; yoffset = wndPtr->rectClient.top - wndPtr->rectWindow.top; WIN_ReleasePtr( wndPtr ); ScreenToClient( hwnd, &pt ); pt.x += xoffset; pt.y += yoffset; } SCROLL_HandleScrollEvent( hwnd, scrollbar, WM_LBUTTONDOWN, pt ); do { if (!GetMessageW( &msg, 0, 0, 0 )) break; if (CallMsgFilterW( &msg, MSGF_SCROLLBAR )) continue; switch(msg.message) { case WM_LBUTTONUP: case WM_MOUSEMOVE: case WM_SYSTIMER: pt.x = LOWORD(msg.lParam) + xoffset; pt.y = HIWORD(msg.lParam) + yoffset; SCROLL_HandleScrollEvent( hwnd, scrollbar, msg.message, pt ); break; default: TranslateMessage( &msg ); DispatchMessageW( &msg ); break; } if (!IsWindow( hwnd )) { ReleaseCapture(); break; } } while (msg.message != WM_LBUTTONUP); } /*********************************************************************** * ScrollBarWndProc */ static LRESULT WINAPI ScrollBarWndProc( HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam ) { if (!IsWindow( hwnd )) return 0; switch(message) { case WM_CREATE: { SCROLLBAR_INFO *infoPtr; CREATESTRUCTW *lpCreat = (CREATESTRUCTW *)lParam; if (!(infoPtr = SCROLL_GetScrollInfo( hwnd, SB_CTL ))) return -1; if (lpCreat->style & WS_DISABLED) { TRACE("Created WS_DISABLED scrollbar\n"); infoPtr->flags = ESB_DISABLE_BOTH; } if (lpCreat->style & SBS_SIZEBOX) { FIXME("Unimplemented style SBS_SIZEBOX.\n" ); return 0; } if (lpCreat->style & SBS_VERT) { if (lpCreat->style & SBS_LEFTALIGN) MoveWindow( hwnd, lpCreat->x, lpCreat->y, GetSystemMetrics(SM_CXVSCROLL)+1, lpCreat->cy, FALSE ); else if (lpCreat->style & SBS_RIGHTALIGN) MoveWindow( hwnd, lpCreat->x+lpCreat->cx-GetSystemMetrics(SM_CXVSCROLL)-1, lpCreat->y, GetSystemMetrics(SM_CXVSCROLL)+1, lpCreat->cy, FALSE ); } else /* SBS_HORZ */ { if (lpCreat->style & SBS_TOPALIGN) MoveWindow( hwnd, lpCreat->x, lpCreat->y, lpCreat->cx, GetSystemMetrics(SM_CYHSCROLL)+1, FALSE ); else if (lpCreat->style & SBS_BOTTOMALIGN) MoveWindow( hwnd, lpCreat->x, lpCreat->y+lpCreat->cy-GetSystemMetrics(SM_CYHSCROLL)-1, lpCreat->cx, GetSystemMetrics(SM_CYHSCROLL)+1, FALSE ); } } if (!hUpArrow) SCROLL_LoadBitmaps(); TRACE("ScrollBar creation, hwnd=%04x\n", hwnd ); return 0; case WM_ENABLE: { SCROLLBAR_INFO *infoPtr; if ((infoPtr = SCROLL_GetScrollInfo( hwnd, SB_CTL ))) { infoPtr->flags = wParam ? ESB_ENABLE_BOTH : ESB_DISABLE_BOTH; SCROLL_RefreshScrollBar(hwnd, SB_CTL, TRUE, TRUE); } } return 0; case WM_LBUTTONDOWN: { POINT pt; pt.x = SLOWORD(lParam); pt.y = SHIWORD(lParam); SCROLL_TrackScrollBar( hwnd, SB_CTL, pt ); } break; case WM_LBUTTONUP: case WM_MOUSEMOVE: case WM_SYSTIMER: { POINT pt; pt.x = SLOWORD(lParam); pt.y = SHIWORD(lParam); SCROLL_HandleScrollEvent( hwnd, SB_CTL, message, pt ); } break; /* if key event is received, the scrollbar has the focus */ case WM_KEYDOWN: /* hide caret on first KEYDOWN to prevent flicker */ if ((lParam & 0x40000000)==0) HideCaret(hwnd); SCROLL_HandleKbdEvent( hwnd, wParam ); break; case WM_KEYUP: ShowCaret(hwnd); break; case WM_SETFOCUS: { /* Create a caret when a ScrollBar get focus */ RECT rect; int arrowSize, thumbSize, thumbPos, vertical; vertical = SCROLL_GetScrollBarRect( hwnd, SB_CTL, &rect, &arrowSize, &thumbSize, &thumbPos ); if (!vertical) { CreateCaret(hwnd,1, thumbSize-2, rect.bottom-rect.top-2); SetCaretPos(thumbPos+1, rect.top+1); } else { CreateCaret(hwnd,1, rect.right-rect.left-2,thumbSize-2); SetCaretPos(rect.top+1, thumbPos+1); } ShowCaret(hwnd); } break; case WM_KILLFOCUS: { RECT rect; int arrowSize, thumbSize, thumbPos, vertical; vertical = SCROLL_GetScrollBarRect( hwnd, SB_CTL, &rect,&arrowSize, &thumbSize, &thumbPos ); if (!vertical){ rect.left=thumbPos+1; rect.right=rect.left+thumbSize; } else { rect.top=thumbPos+1; rect.bottom=rect.top+thumbSize; } HideCaret(hwnd); InvalidateRect(hwnd,&rect,0); DestroyCaret(); } break; case WM_ERASEBKGND: return 1; case WM_GETDLGCODE: return DLGC_WANTARROWS; /* Windows returns this value */ case WM_PAINT: { PAINTSTRUCT ps; HDC hdc = BeginPaint( hwnd, &ps ); SCROLL_DrawScrollBar( hwnd, hdc, SB_CTL, TRUE, TRUE ); EndPaint( hwnd, &ps ); } break; case SBM_SETPOS16: case SBM_SETPOS: return SetScrollPos( hwnd, SB_CTL, wParam, (BOOL)lParam ); case SBM_GETPOS16: case SBM_GETPOS: return GetScrollPos( hwnd, SB_CTL ); case SBM_SETRANGE16: SetScrollRange( hwnd, SB_CTL, LOWORD(lParam), HIWORD(lParam), wParam /* FIXME: Is this correct? */ ); return 0; case SBM_SETRANGE: { INT oldPos = GetScrollPos( hwnd, SB_CTL ); SetScrollRange( hwnd, SB_CTL, wParam, lParam, FALSE ); if (oldPos != GetScrollPos( hwnd, SB_CTL )) return oldPos; } return 0; case SBM_GETRANGE16: FIXME("don't know how to handle SBM_GETRANGE16 (wp=%04x,lp=%08lx)\n", wParam, lParam ); return 0; case SBM_GETRANGE: GetScrollRange( hwnd, SB_CTL, (LPINT)wParam, (LPINT)lParam ); return 0; case SBM_ENABLE_ARROWS16: case SBM_ENABLE_ARROWS: return EnableScrollBar( hwnd, SB_CTL, wParam ); case SBM_SETRANGEREDRAW: { INT oldPos = GetScrollPos( hwnd, SB_CTL ); SetScrollRange( hwnd, SB_CTL, wParam, lParam, TRUE ); if (oldPos != GetScrollPos( hwnd, SB_CTL )) return oldPos; } return 0; case SBM_SETSCROLLINFO: return SetScrollInfo( hwnd, SB_CTL, (SCROLLINFO *)lParam, wParam ); case SBM_GETSCROLLINFO: return GetScrollInfo( hwnd, SB_CTL, (SCROLLINFO *)lParam ); case 0x00e5: case 0x00e7: case 0x00e8: case 0x00eb: case 0x00ec: case 0x00ed: case 0x00ee: case 0x00ef: ERR("unknown Win32 msg %04x wp=%08x lp=%08lx\n", message, wParam, lParam ); break; default: if (message >= WM_USER) WARN("unknown msg %04x wp=%04x lp=%08lx\n", message, wParam, lParam ); return DefWindowProcW( hwnd, message, wParam, lParam ); } return 0; } /************************************************************************* * SetScrollInfo (USER32.@) * SetScrollInfo can be used to set the position, upper bound, * lower bound, and page size of a scrollbar control. * * RETURNS * Scrollbar position * * NOTE * For 100 lines of text to be displayed in a window of 25 lines, * one would for instance use info->nMin=0, info->nMax=75 * (corresponding to the 76 different positions of the window on * the text), and info->nPage=25. */ INT WINAPI SetScrollInfo( HWND hwnd /* [in] Handle of window whose scrollbar will be affected */, INT nBar /* [in] One of SB_HORZ, SB_VERT, or SB_CTL */, const SCROLLINFO *info /* [in] Specifies what to change and new values */, BOOL bRedraw /* [in] Should scrollbar be redrawn afterwards ? */) { INT action; INT retVal = SCROLL_SetScrollInfo( hwnd, nBar, info, &action ); if( action & SA_SSI_HIDE ) SCROLL_ShowScrollBar( hwnd, nBar, FALSE, FALSE ); else { if( action & SA_SSI_SHOW ) if( SCROLL_ShowScrollBar( hwnd, nBar, TRUE, TRUE ) ) return retVal; /* SetWindowPos() already did the painting */ if( bRedraw && (action & SA_SSI_REFRESH)) SCROLL_RefreshScrollBar( hwnd, nBar, TRUE, TRUE ); else if( action & SA_SSI_REPAINT_ARROWS ) SCROLL_RefreshScrollBar( hwnd, nBar, TRUE, FALSE ); } return retVal; } INT SCROLL_SetScrollInfo( HWND hwnd, INT nBar, const SCROLLINFO *info, INT *action ) { /* Update the scrollbar state and set action flags according to * what has to be done graphics wise. */ SCROLLBAR_INFO *infoPtr; UINT new_flags; BOOL bChangeParams = FALSE; /* don't show/hide scrollbar if params don't change */ *action = 0; if (!(infoPtr = SCROLL_GetScrollInfo(hwnd, nBar))) return 0; if (info->fMask & ~(SIF_ALL | SIF_DISABLENOSCROLL)) return 0; if ((info->cbSize != sizeof(*info)) && (info->cbSize != sizeof(*info)-sizeof(info->nTrackPos))) return 0; if (TRACE_ON(scroll)) { TRACE("hwnd=%04x bar=%d", hwnd, nBar); if (info->fMask & SIF_PAGE) DPRINTF( " page=%d", info->nPage ); if (info->fMask & SIF_POS) DPRINTF( " pos=%d", info->nPos ); if (info->fMask & SIF_RANGE) DPRINTF( " min=%d max=%d", info->nMin, info->nMax ); DPRINTF("\n"); } /* Set the page size */ if (info->fMask & SIF_PAGE) { if( infoPtr->Page != info->nPage ) { infoPtr->Page = info->nPage; *action |= SA_SSI_REFRESH; bChangeParams = TRUE; } } /* Set the scroll pos */ if (info->fMask & SIF_POS) { if( infoPtr->CurVal != info->nPos ) { infoPtr->CurVal = info->nPos; *action |= SA_SSI_REFRESH; } } /* Set the scroll range */ if (info->fMask & SIF_RANGE) { /* Invalid range -> range is set to (0,0) */ if ((info->nMin > info->nMax) || ((UINT)(info->nMax - info->nMin) >= 0x80000000)) { infoPtr->MinVal = 0; infoPtr->MaxVal = 0; bChangeParams = TRUE; } else { if( infoPtr->MinVal != info->nMin || infoPtr->MaxVal != info->nMax ) { *action |= SA_SSI_REFRESH; infoPtr->MinVal = info->nMin; infoPtr->MaxVal = info->nMax; bChangeParams = TRUE; } } } /* Make sure the page size is valid */ if (infoPtr->Page < 0) infoPtr->Page = 0; else if (infoPtr->Page > infoPtr->MaxVal - infoPtr->MinVal + 1 ) infoPtr->Page = infoPtr->MaxVal - infoPtr->MinVal + 1; /* Make sure the pos is inside the range */ if (infoPtr->CurVal < infoPtr->MinVal) infoPtr->CurVal = infoPtr->MinVal; else if (infoPtr->CurVal > infoPtr->MaxVal - max( infoPtr->Page-1, 0 )) infoPtr->CurVal = infoPtr->MaxVal - max( infoPtr->Page-1, 0 ); TRACE(" new values: page=%d pos=%d min=%d max=%d\n", infoPtr->Page, infoPtr->CurVal, infoPtr->MinVal, infoPtr->MaxVal ); /* don't change the scrollbar state if SetScrollInfo * is just called with SIF_DISABLENOSCROLL */ if(!(info->fMask & SIF_ALL)) goto done; /* Check if the scrollbar should be hidden or disabled */ if (info->fMask & (SIF_RANGE | SIF_PAGE | SIF_DISABLENOSCROLL)) { new_flags = infoPtr->flags; if (infoPtr->MinVal >= infoPtr->MaxVal - max( infoPtr->Page-1, 0 )) { /* Hide or disable scroll-bar */ if (info->fMask & SIF_DISABLENOSCROLL) { new_flags = ESB_DISABLE_BOTH; *action |= SA_SSI_REFRESH; } else if ((nBar != SB_CTL) && bChangeParams) { *action = SA_SSI_HIDE; goto done; } } else /* Show and enable scroll-bar */ { new_flags = 0; if ((nBar != SB_CTL) && bChangeParams) *action |= SA_SSI_SHOW; } if (infoPtr->flags != new_flags) /* check arrow flags */ { infoPtr->flags = new_flags; *action |= SA_SSI_REPAINT_ARROWS; } } done: /* Return current position */ return infoPtr->CurVal; } /************************************************************************* * GetScrollInfo (USER32.@) * GetScrollInfo can be used to retrieve the position, upper bound, * lower bound, and page size of a scrollbar control. * * RETURNS STD */ BOOL WINAPI GetScrollInfo( HWND hwnd /* [in] Handle of window */ , INT nBar /* [in] One of SB_HORZ, SB_VERT, or SB_CTL */, LPSCROLLINFO info /* [in/out] (info.fMask [in] specifies which values are to retrieve) */) { SCROLLBAR_INFO *infoPtr; if (!(infoPtr = SCROLL_GetScrollInfo( hwnd, nBar ))) return FALSE; if (info->fMask & ~(SIF_ALL | SIF_DISABLENOSCROLL)) return FALSE; if ((info->cbSize != sizeof(*info)) && (info->cbSize != sizeof(*info)-sizeof(info->nTrackPos))) return FALSE; 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; if (info->fMask & SIF_RANGE) { info->nMin = infoPtr->MinVal; info->nMax = infoPtr->MaxVal; } return (info->fMask & SIF_ALL) != 0; } /************************************************************************* * SetScrollPos (USER32.@) * * RETURNS * Success: Scrollbar position * Failure: 0 * * REMARKS * Note the ambiguity when 0 is returned. Use GetLastError * to make sure there was an error (and to know which one). */ INT WINAPI SetScrollPos( HWND hwnd /* [in] Handle of window whose scrollbar will be affected */, INT nBar /* [in] One of SB_HORZ, SB_VERT, or SB_CTL */, INT nPos /* [in] New value */, BOOL bRedraw /* [in] Should scrollbar be redrawn afterwards ? */ ) { SCROLLINFO info; SCROLLBAR_INFO *infoPtr; INT oldPos; if (!(infoPtr = SCROLL_GetScrollInfo( hwnd, nBar ))) return 0; oldPos = infoPtr->CurVal; info.cbSize = sizeof(info); info.nPos = nPos; info.fMask = SIF_POS; SetScrollInfo( hwnd, nBar, &info, bRedraw ); return oldPos; } /************************************************************************* * GetScrollPos (USER32.@) * * RETURNS * Success: Current position * Failure: 0 * * REMARKS * Note the ambiguity when 0 is returned. Use GetLastError * to make sure there was an error (and to know which one). */ INT WINAPI GetScrollPos( HWND hwnd, /* [in] Handle of window */ INT nBar /* [in] One of SB_HORZ, SB_VERT, or SB_CTL */) { SCROLLBAR_INFO *infoPtr; if (!(infoPtr = SCROLL_GetScrollInfo( hwnd, nBar ))) return 0; return infoPtr->CurVal; } /************************************************************************* * SetScrollRange (USER32.@) * * RETURNS STD */ BOOL WINAPI SetScrollRange( HWND hwnd, /* [in] Handle of window whose scrollbar will be affected */ INT nBar, /* [in] One of SB_HORZ, SB_VERT, or SB_CTL */ INT MinVal, /* [in] New minimum value */ INT MaxVal, /* [in] New maximum value */ BOOL bRedraw /* [in] Should scrollbar be redrawn afterwards ? */) { SCROLLINFO info; info.cbSize = sizeof(info); info.nMin = MinVal; info.nMax = MaxVal; info.fMask = SIF_RANGE; SetScrollInfo( hwnd, nBar, &info, bRedraw ); return TRUE; } /************************************************************************* * SCROLL_SetNCSbState * * Updates both scrollbars at the same time. Used by MDI CalcChildScroll(). */ INT SCROLL_SetNCSbState(HWND hwnd, int vMin, int vMax, int vPos, int hMin, int hMax, int hPos) { INT vA, hA; SCROLLINFO vInfo, hInfo; vInfo.cbSize = hInfo.cbSize = sizeof(SCROLLINFO); vInfo.nMin = vMin; vInfo.nMax = vMax; vInfo.nPos = vPos; hInfo.nMin = hMin; hInfo.nMax = hMax; hInfo.nPos = hPos; vInfo.fMask = hInfo.fMask = SIF_RANGE | SIF_POS; SCROLL_SetScrollInfo( hwnd, SB_VERT, &vInfo, &vA ); SCROLL_SetScrollInfo( hwnd, SB_HORZ, &hInfo, &hA ); if( !SCROLL_ShowScrollBar( hwnd, SB_BOTH, (hA & SA_SSI_SHOW),(vA & SA_SSI_SHOW) ) ) { /* SetWindowPos() wasn't called, just redraw the scrollbars if needed */ if( vA & SA_SSI_REFRESH ) SCROLL_RefreshScrollBar( hwnd, SB_VERT, FALSE, TRUE ); if( hA & SA_SSI_REFRESH ) SCROLL_RefreshScrollBar( hwnd, SB_HORZ, FALSE, TRUE ); } return 0; } /************************************************************************* * GetScrollRange (USER32.@) * * RETURNS STD */ BOOL WINAPI GetScrollRange( HWND hwnd, /* [in] Handle of window */ INT nBar, /* [in] One of SB_HORZ, SB_VERT, or SB_CTL */ LPINT lpMin, /* [out] Where to store minimum value */ LPINT lpMax /* [out] Where to store maximum value */) { SCROLLBAR_INFO *infoPtr; if (!(infoPtr = SCROLL_GetScrollInfo( hwnd, nBar ))) { if (lpMin) lpMin = 0; if (lpMax) lpMax = 0; return FALSE; } if (lpMin) *lpMin = infoPtr->MinVal; if (lpMax) *lpMax = infoPtr->MaxVal; return TRUE; } /************************************************************************* * SCROLL_ShowScrollBar() * * Back-end for ShowScrollBar(). Returns FALSE if no action was taken. */ BOOL SCROLL_ShowScrollBar( HWND hwnd, INT nBar, BOOL fShowH, BOOL fShowV ) { LONG style = GetWindowLongW( hwnd, GWL_STYLE ); TRACE("hwnd=%04x bar=%d horz=%d, vert=%d\n", hwnd, nBar, fShowH, fShowV ); switch(nBar) { case SB_CTL: ShowWindow( hwnd, fShowH ? SW_SHOW : SW_HIDE ); return TRUE; case SB_BOTH: case SB_HORZ: if (fShowH) { fShowH = !(style & WS_HSCROLL); style |= WS_HSCROLL; } else /* hide it */ { fShowH = (style & WS_HSCROLL); style &= ~WS_HSCROLL; } if( nBar == SB_HORZ ) { fShowV = FALSE; break; } /* fall through */ case SB_VERT: if (fShowV) { fShowV = !(style & WS_VSCROLL); style |= WS_VSCROLL; } else /* hide it */ { fShowV = (style & WS_VSCROLL); style &= ~WS_VSCROLL; } if ( nBar == SB_VERT ) fShowH = FALSE; break; default: return FALSE; /* Nothing to do! */ } if( fShowH || fShowV ) /* frame has been changed, let the window redraw itself */ { WIN_SetStyle( hwnd, style ); SetWindowPos( hwnd, 0, 0, 0, 0, 0, SWP_NOSIZE | SWP_NOMOVE | SWP_NOACTIVATE | SWP_NOZORDER | SWP_FRAMECHANGED ); return TRUE; } return FALSE; /* no frame changes */ } /************************************************************************* * ShowScrollBar (USER32.@) * * RETURNS STD */ BOOL WINAPI ShowScrollBar( HWND hwnd, /* [in] Handle of window whose scrollbar(s) will be affected */ INT nBar, /* [in] One of SB_HORZ, SB_VERT, SB_BOTH or SB_CTL */ BOOL fShow /* [in] TRUE = show, FALSE = hide */) { SCROLL_ShowScrollBar( hwnd, nBar, (nBar == SB_VERT) ? 0 : fShow, (nBar == SB_HORZ) ? 0 : fShow ); return TRUE; } /************************************************************************* * EnableScrollBar (USER32.@) */ BOOL WINAPI EnableScrollBar( HWND hwnd, INT nBar, UINT flags ) { BOOL bFineWithMe; SCROLLBAR_INFO *infoPtr; TRACE("%04x %d %d\n", hwnd, nBar, flags ); flags &= ESB_DISABLE_BOTH; if (nBar == SB_BOTH) { if (!(infoPtr = SCROLL_GetScrollInfo( hwnd, SB_VERT ))) return FALSE; if (!(bFineWithMe = (infoPtr->flags == flags)) ) { infoPtr->flags = flags; SCROLL_RefreshScrollBar( hwnd, SB_VERT, TRUE, TRUE ); } nBar = SB_HORZ; } else bFineWithMe = TRUE; if (!(infoPtr = SCROLL_GetScrollInfo( hwnd, nBar ))) return FALSE; if (bFineWithMe && infoPtr->flags == flags) return FALSE; infoPtr->flags = flags; SCROLL_RefreshScrollBar( hwnd, nBar, TRUE, TRUE ); return TRUE; }