2079 lines
66 KiB
C
2079 lines
66 KiB
C
/*
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* Scrollbar control
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*
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* Copyright 1993 Martin Ayotte
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* Copyright 1994, 1996 Alexandre Julliard
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*
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* NOTES
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*
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* This code was audited for completeness against the documented features
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* of Comctl32.dll version 6.0 on Oct. 8, 2004, by Dimitrie O. Paun.
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*
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* Unless otherwise noted, we believe this code to be complete, as per
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* the specification mentioned above.
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* If you discover missing features, or bugs, please note them below.
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*/
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#include <stdarg.h>
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#include "windef.h"
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#include "winbase.h"
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#include "wingdi.h"
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#include "wine/winuser16.h"
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#include "controls.h"
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#include "win.h"
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#include "wine/debug.h"
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#include "user_private.h"
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WINE_DEFAULT_DEBUG_CHANNEL(scroll);
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typedef struct
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{
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INT curVal; /* Current scroll-bar value */
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INT minVal; /* Minimum scroll-bar value */
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INT maxVal; /* Maximum scroll-bar value */
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INT page; /* Page size of scroll bar (Win32) */
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UINT flags; /* EnableScrollBar flags */
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} SCROLLBAR_INFO, *LPSCROLLBAR_INFO;
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/* Minimum size of the rectangle between the arrows */
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#define SCROLL_MIN_RECT 4
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/* Minimum size of the thumb in pixels */
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#define SCROLL_MIN_THUMB 6
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/* Overlap between arrows and thumb */
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#define SCROLL_ARROW_THUMB_OVERLAP 0
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/* Delay (in ms) before first repetition when holding the button down */
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#define SCROLL_FIRST_DELAY 200
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/* Delay (in ms) between scroll repetitions */
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#define SCROLL_REPEAT_DELAY 50
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/* Scroll timer id */
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#define SCROLL_TIMER 0
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/* Scroll-bar hit testing */
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enum SCROLL_HITTEST
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{
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SCROLL_NOWHERE, /* Outside the scroll bar */
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SCROLL_TOP_ARROW, /* Top or left arrow */
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SCROLL_TOP_RECT, /* Rectangle between the top arrow and the thumb */
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SCROLL_THUMB, /* Thumb rectangle */
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SCROLL_BOTTOM_RECT, /* Rectangle between the thumb and the bottom arrow */
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SCROLL_BOTTOM_ARROW /* Bottom or right arrow */
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};
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/* What to do after SCROLL_SetScrollInfo() */
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#define SA_SSI_HIDE 0x0001
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#define SA_SSI_SHOW 0x0002
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#define SA_SSI_REFRESH 0x0004
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#define SA_SSI_REPAINT_ARROWS 0x0008
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/* Thumb-tracking info */
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static HWND SCROLL_TrackingWin = 0;
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static INT SCROLL_TrackingBar = 0;
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static INT SCROLL_TrackingPos = 0;
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static INT SCROLL_TrackingVal = 0;
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/* Hit test code of the last button-down event */
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static enum SCROLL_HITTEST SCROLL_trackHitTest;
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static BOOL SCROLL_trackVertical;
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/* Is the moving thumb being displayed? */
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static BOOL SCROLL_MovingThumb = FALSE;
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/* Local functions */
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static BOOL SCROLL_ShowScrollBar( HWND hwnd, INT nBar,
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BOOL fShowH, BOOL fShowV );
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static INT SCROLL_SetScrollInfo( HWND hwnd, INT nBar,
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const SCROLLINFO *info, BOOL bRedraw );
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static void SCROLL_DrawInterior_9x( HWND hwnd, HDC hdc, INT nBar,
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RECT *rect, INT arrowSize,
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INT thumbSize, INT thumbPos,
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UINT flags, BOOL vertical,
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BOOL top_selected, BOOL bottom_selected );
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static LRESULT WINAPI ScrollBarWndProcA( HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam );
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static LRESULT WINAPI ScrollBarWndProcW( HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam );
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/*********************************************************************
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* scrollbar class descriptor
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*/
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static const WCHAR scrollbarW[] = {'S','c','r','o','l','l','B','a','r',0};
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const struct builtin_class_descr SCROLL_builtin_class =
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{
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scrollbarW, /* name */
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CS_DBLCLKS | CS_VREDRAW | CS_HREDRAW | CS_PARENTDC, /* style */
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ScrollBarWndProcA, /* procA */
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ScrollBarWndProcW, /* procW */
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sizeof(SCROLLBAR_INFO), /* extra */
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IDC_ARROW, /* cursor */
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0 /* brush */
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};
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/***********************************************************************
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* SCROLL_ScrollInfoValid
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*
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* Determine if the supplied SCROLLINFO struct is valid.
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* info [in] The SCROLLINFO struct to be tested
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*/
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static inline BOOL SCROLL_ScrollInfoValid( LPCSCROLLINFO info )
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{
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return !(info->fMask & ~(SIF_ALL | SIF_DISABLENOSCROLL)
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|| (info->cbSize != sizeof(*info)
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&& info->cbSize != sizeof(*info) - sizeof(info->nTrackPos)));
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}
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/***********************************************************************
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* SCROLL_GetInternalInfo
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* Returns pointer to internal SCROLLBAR_INFO structure for nBar
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* or NULL if failed (f.i. scroll bar does not exist yet)
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* If alloc is TRUE and the struct does not exist yet, create it.
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*/
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static SCROLLBAR_INFO *SCROLL_GetInternalInfo( HWND hwnd, INT nBar, BOOL alloc )
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{
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SCROLLBAR_INFO *infoPtr = NULL;
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WND *wndPtr = WIN_GetPtr( hwnd );
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if (!wndPtr || wndPtr == WND_OTHER_PROCESS || wndPtr == WND_DESKTOP) return NULL;
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switch(nBar)
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{
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case SB_HORZ: infoPtr = (SCROLLBAR_INFO *)wndPtr->pHScroll; break;
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case SB_VERT: infoPtr = (SCROLLBAR_INFO *)wndPtr->pVScroll; break;
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case SB_CTL: infoPtr = (SCROLLBAR_INFO *)wndPtr->wExtra; break;
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case SB_BOTH: WARN("with SB_BOTH\n"); break;
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}
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if (!infoPtr && alloc)
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{
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if (nBar != SB_HORZ && nBar != SB_VERT)
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WARN("Cannot initialize nBar=%d\n",nBar);
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else if ((infoPtr = HeapAlloc( GetProcessHeap(), 0, sizeof(SCROLLBAR_INFO) )))
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{
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/* Set default values */
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infoPtr->minVal = infoPtr->curVal = infoPtr->page = 0;
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/* From MSDN: max for a standard scroll bar is 100 by default. */
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infoPtr->maxVal = 100;
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/* Scroll bar is enabled by default after create */
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infoPtr->flags = ESB_ENABLE_BOTH;
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if (nBar == SB_HORZ) wndPtr->pHScroll = infoPtr;
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else wndPtr->pVScroll = infoPtr;
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}
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}
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WIN_ReleasePtr( wndPtr );
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return infoPtr;
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}
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/***********************************************************************
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* SCROLL_GetScrollBarRect
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*
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* Compute the scroll bar rectangle, in drawing coordinates (i.e. client
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* coords for SB_CTL, window coords for SB_VERT and SB_HORZ).
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* 'arrowSize' returns the width or height of an arrow (depending on
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* the orientation of the scrollbar), 'thumbSize' returns the size of
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* the thumb, and 'thumbPos' returns the position of the thumb
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* relative to the left or to the top.
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* Return TRUE if the scrollbar is vertical, FALSE if horizontal.
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*/
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static BOOL SCROLL_GetScrollBarRect( HWND hwnd, INT nBar, RECT *lprect,
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INT *arrowSize, INT *thumbSize,
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INT *thumbPos )
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{
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INT pixels;
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BOOL vertical;
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WND *wndPtr = WIN_GetPtr( hwnd );
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if (!wndPtr || wndPtr == WND_OTHER_PROCESS || wndPtr == WND_DESKTOP) return FALSE;
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switch(nBar)
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{
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case SB_HORZ:
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lprect->left = wndPtr->rectClient.left - wndPtr->rectWindow.left;
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lprect->top = wndPtr->rectClient.bottom - wndPtr->rectWindow.top;
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lprect->right = wndPtr->rectClient.right - wndPtr->rectWindow.left;
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lprect->bottom = lprect->top + GetSystemMetrics(SM_CYHSCROLL);
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if(wndPtr->dwStyle & WS_VSCROLL)
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lprect->right++;
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vertical = FALSE;
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break;
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case SB_VERT:
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if((wndPtr->dwExStyle & WS_EX_LEFTSCROLLBAR) != 0)
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lprect->left = wndPtr->rectClient.left - wndPtr->rectWindow.left - GetSystemMetrics(SM_CXVSCROLL);
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else
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lprect->left = wndPtr->rectClient.right - wndPtr->rectWindow.left;
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lprect->top = wndPtr->rectClient.top - wndPtr->rectWindow.top;
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lprect->right = lprect->left + GetSystemMetrics(SM_CXVSCROLL);
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lprect->bottom = wndPtr->rectClient.bottom - wndPtr->rectWindow.top;
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if(wndPtr->dwStyle & WS_HSCROLL)
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lprect->bottom++;
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vertical = TRUE;
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break;
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case SB_CTL:
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GetClientRect( hwnd, lprect );
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vertical = ((wndPtr->dwStyle & SBS_VERT) != 0);
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break;
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default:
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WIN_ReleasePtr( wndPtr );
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return FALSE;
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}
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if (vertical) pixels = lprect->bottom - lprect->top;
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else pixels = lprect->right - lprect->left;
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if (pixels <= 2*GetSystemMetrics(SM_CXVSCROLL) + SCROLL_MIN_RECT)
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{
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if (pixels > SCROLL_MIN_RECT)
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*arrowSize = (pixels - SCROLL_MIN_RECT) / 2;
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else
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*arrowSize = 0;
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*thumbPos = *thumbSize = 0;
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}
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else
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{
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SCROLLBAR_INFO *info = SCROLL_GetInternalInfo( hwnd, nBar, FALSE );
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if (!info)
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{
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WARN("called for missing scroll bar\n");
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WIN_ReleasePtr( wndPtr );
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return FALSE;
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}
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*arrowSize = GetSystemMetrics(SM_CXVSCROLL);
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pixels -= (2 * (GetSystemMetrics(SM_CXVSCROLL) - SCROLL_ARROW_THUMB_OVERLAP));
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if (info->page)
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{
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*thumbSize = MulDiv(pixels,info->page,(info->maxVal-info->minVal+1));
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if (*thumbSize < SCROLL_MIN_THUMB) *thumbSize = SCROLL_MIN_THUMB;
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}
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else *thumbSize = GetSystemMetrics(SM_CXVSCROLL);
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if (((pixels -= *thumbSize ) < 0) ||
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((info->flags & ESB_DISABLE_BOTH) == ESB_DISABLE_BOTH))
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{
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/* Rectangle too small or scrollbar disabled -> no thumb */
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*thumbPos = *thumbSize = 0;
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}
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else
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{
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INT max = info->maxVal - max( info->page-1, 0 );
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if (info->minVal >= max)
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*thumbPos = *arrowSize - SCROLL_ARROW_THUMB_OVERLAP;
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else
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*thumbPos = *arrowSize - SCROLL_ARROW_THUMB_OVERLAP
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+ MulDiv(pixels, (info->curVal-info->minVal),(max - info->minVal));
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}
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}
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WIN_ReleasePtr( wndPtr );
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return vertical;
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}
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/***********************************************************************
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* SCROLL_GetThumbVal
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*
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* Compute the current scroll position based on the thumb position in pixels
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* from the top of the scroll-bar.
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*/
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static UINT SCROLL_GetThumbVal( SCROLLBAR_INFO *infoPtr, RECT *rect,
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BOOL vertical, INT pos )
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{
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INT thumbSize;
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INT pixels = vertical ? rect->bottom-rect->top : rect->right-rect->left;
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if ((pixels -= 2*(GetSystemMetrics(SM_CXVSCROLL) - SCROLL_ARROW_THUMB_OVERLAP)) <= 0)
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return infoPtr->minVal;
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if (infoPtr->page)
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{
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thumbSize = MulDiv(pixels,infoPtr->page,(infoPtr->maxVal-infoPtr->minVal+1));
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if (thumbSize < SCROLL_MIN_THUMB) thumbSize = SCROLL_MIN_THUMB;
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}
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else thumbSize = GetSystemMetrics(SM_CXVSCROLL);
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if ((pixels -= thumbSize) <= 0) return infoPtr->minVal;
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pos = max( 0, pos - (GetSystemMetrics(SM_CXVSCROLL) - SCROLL_ARROW_THUMB_OVERLAP) );
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if (pos > pixels) pos = pixels;
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if (!infoPtr->page) pos *= infoPtr->maxVal - infoPtr->minVal;
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else pos *= infoPtr->maxVal - infoPtr->minVal - infoPtr->page + 1;
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return infoPtr->minVal + ((pos + pixels / 2) / pixels);
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}
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/***********************************************************************
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* SCROLL_PtInRectEx
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*/
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static BOOL SCROLL_PtInRectEx( LPRECT lpRect, POINT pt, BOOL vertical )
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{
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RECT rect = *lpRect;
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int scrollbarWidth;
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/* Pad hit rect to allow mouse to be dragged outside of scrollbar and
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* still be considered in the scrollbar. */
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if (vertical)
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{
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scrollbarWidth = lpRect->right - lpRect->left;
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rect.left -= scrollbarWidth*8;
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rect.right += scrollbarWidth*8;
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rect.top -= scrollbarWidth*2;
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rect.bottom += scrollbarWidth*2;
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}
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else
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{
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scrollbarWidth = lpRect->bottom - lpRect->top;
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rect.left -= scrollbarWidth*2;
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rect.right += scrollbarWidth*2;
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rect.top -= scrollbarWidth*8;
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rect.bottom += scrollbarWidth*8;
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}
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return PtInRect( &rect, pt );
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}
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/***********************************************************************
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* SCROLL_ClipPos
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*/
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static POINT SCROLL_ClipPos( LPRECT lpRect, POINT pt )
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{
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if( pt.x < lpRect->left )
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pt.x = lpRect->left;
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else
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if( pt.x > lpRect->right )
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pt.x = lpRect->right;
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if( pt.y < lpRect->top )
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pt.y = lpRect->top;
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else
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if( pt.y > lpRect->bottom )
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pt.y = lpRect->bottom;
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return pt;
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}
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/***********************************************************************
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* SCROLL_HitTest
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*
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* Scroll-bar hit testing (don't confuse this with WM_NCHITTEST!).
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*/
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static enum SCROLL_HITTEST SCROLL_HitTest( HWND hwnd, INT nBar,
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POINT pt, BOOL bDragging )
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{
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INT arrowSize, thumbSize, thumbPos;
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RECT rect;
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BOOL vertical = SCROLL_GetScrollBarRect( hwnd, nBar, &rect,
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&arrowSize, &thumbSize, &thumbPos );
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if ( (bDragging && !SCROLL_PtInRectEx( &rect, pt, vertical )) ||
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(!PtInRect( &rect, pt )) ) return SCROLL_NOWHERE;
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if (vertical)
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{
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if (pt.y < rect.top + arrowSize) return SCROLL_TOP_ARROW;
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if (pt.y >= rect.bottom - arrowSize) return SCROLL_BOTTOM_ARROW;
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if (!thumbPos) return SCROLL_TOP_RECT;
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pt.y -= rect.top;
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if (pt.y < thumbPos) return SCROLL_TOP_RECT;
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if (pt.y >= thumbPos + thumbSize) return SCROLL_BOTTOM_RECT;
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}
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else /* horizontal */
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{
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if (pt.x < rect.left + arrowSize) return SCROLL_TOP_ARROW;
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if (pt.x >= rect.right - arrowSize) return SCROLL_BOTTOM_ARROW;
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if (!thumbPos) return SCROLL_TOP_RECT;
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pt.x -= rect.left;
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if (pt.x < thumbPos) return SCROLL_TOP_RECT;
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if (pt.x >= thumbPos + thumbSize) return SCROLL_BOTTOM_RECT;
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}
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return SCROLL_THUMB;
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}
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/***********************************************************************
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* SCROLL_DrawArrows
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*
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* Draw the scroll bar arrows.
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*/
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static void SCROLL_DrawArrows( HDC hdc, SCROLLBAR_INFO *infoPtr,
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RECT *rect, INT arrowSize, BOOL vertical,
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BOOL top_pressed, BOOL bottom_pressed )
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{
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RECT r;
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r = *rect;
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if( vertical )
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r.bottom = r.top + arrowSize;
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else
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r.right = r.left + arrowSize;
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DrawFrameControl( hdc, &r, DFC_SCROLL,
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(vertical ? DFCS_SCROLLUP : DFCS_SCROLLLEFT)
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| (top_pressed ? (DFCS_PUSHED | DFCS_FLAT) : 0 )
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| (infoPtr->flags&ESB_DISABLE_LTUP ? DFCS_INACTIVE : 0 ) );
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r = *rect;
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if( vertical )
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r.top = r.bottom-arrowSize;
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else
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r.left = r.right-arrowSize;
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DrawFrameControl( hdc, &r, DFC_SCROLL,
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(vertical ? DFCS_SCROLLDOWN : DFCS_SCROLLRIGHT)
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| (bottom_pressed ? (DFCS_PUSHED | DFCS_FLAT) : 0 )
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| (infoPtr->flags&ESB_DISABLE_RTDN ? DFCS_INACTIVE : 0) );
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}
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static void SCROLL_DrawMovingThumb( HDC hdc, RECT *rect, BOOL vertical,
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INT arrowSize, INT thumbSize )
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{
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INT pos = SCROLL_TrackingPos;
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INT max_size;
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if( vertical )
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max_size = rect->bottom - rect->top;
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else
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max_size = rect->right - rect->left;
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max_size -= (arrowSize-SCROLL_ARROW_THUMB_OVERLAP) + thumbSize;
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if( pos < (arrowSize-SCROLL_ARROW_THUMB_OVERLAP) )
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pos = (arrowSize-SCROLL_ARROW_THUMB_OVERLAP);
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else if( pos > max_size )
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pos = max_size;
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SCROLL_DrawInterior_9x( SCROLL_TrackingWin, hdc, SCROLL_TrackingBar,
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rect, arrowSize, thumbSize, pos,
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0, vertical, FALSE, FALSE );
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SCROLL_MovingThumb = !SCROLL_MovingThumb;
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}
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/***********************************************************************
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* SCROLL_DrawInterior
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*
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* Draw the scroll bar interior (everything except the arrows).
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|
*/
|
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static void SCROLL_DrawInterior_9x( HWND hwnd, HDC hdc, INT nBar,
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RECT *rect, INT arrowSize,
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INT thumbSize, INT thumbPos,
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UINT flags, BOOL vertical,
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BOOL top_selected, BOOL bottom_selected )
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{
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RECT r;
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HPEN hSavePen;
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HBRUSH hSaveBrush,hBrush;
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/* Only scrollbar controls send WM_CTLCOLORSCROLLBAR.
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* The window-owned scrollbars need to call DEFWND_ControlColor
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* to correctly setup default scrollbar colors
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*/
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if (nBar == SB_CTL)
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{
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hBrush = (HBRUSH)SendMessageW( GetParent(hwnd), WM_CTLCOLORSCROLLBAR,
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(WPARAM)hdc,(LPARAM)hwnd);
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}
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else
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{
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hBrush = DEFWND_ControlColor( hdc, CTLCOLOR_SCROLLBAR );
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}
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hSavePen = SelectObject( hdc, SYSCOLOR_GetPen(COLOR_WINDOWFRAME) );
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hSaveBrush = SelectObject( hdc, hBrush );
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/* Calculate the scroll rectangle */
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r = *rect;
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if (vertical)
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{
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r.top += arrowSize - SCROLL_ARROW_THUMB_OVERLAP;
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r.bottom -= (arrowSize - SCROLL_ARROW_THUMB_OVERLAP);
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}
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else
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{
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r.left += arrowSize - SCROLL_ARROW_THUMB_OVERLAP;
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r.right -= (arrowSize - SCROLL_ARROW_THUMB_OVERLAP);
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}
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/* Draw the scroll rectangles and thumb */
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if (!thumbPos) /* No thumb to draw */
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{
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PatBlt( hdc, r.left, r.top,
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r.right - r.left, r.bottom - r.top,
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PATCOPY );
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/* cleanup and return */
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SelectObject( hdc, hSavePen );
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SelectObject( hdc, hSaveBrush );
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return;
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}
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if (vertical)
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{
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PatBlt( hdc, r.left, r.top,
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r.right - r.left,
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thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP),
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top_selected ? 0x0f0000 : PATCOPY );
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r.top += thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP);
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PatBlt( hdc, r.left, r.top + thumbSize,
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r.right - r.left,
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r.bottom - r.top - thumbSize,
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bottom_selected ? 0x0f0000 : PATCOPY );
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r.bottom = r.top + thumbSize;
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}
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else /* horizontal */
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{
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PatBlt( hdc, r.left, r.top,
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thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP),
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r.bottom - r.top,
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top_selected ? 0x0f0000 : PATCOPY );
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r.left += thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP);
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PatBlt( hdc, r.left + thumbSize, r.top,
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r.right - r.left - thumbSize,
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r.bottom - r.top,
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bottom_selected ? 0x0f0000 : PATCOPY );
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r.right = r.left + thumbSize;
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}
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/* Draw the thumb */
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DrawEdge( hdc, &r, EDGE_RAISED, BF_RECT | BF_MIDDLE );
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/* cleanup */
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SelectObject( hdc, hSavePen );
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SelectObject( hdc, hSaveBrush );
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}
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static void SCROLL_DrawInterior( HWND hwnd, HDC hdc, INT nBar,
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RECT *rect, INT arrowSize,
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INT thumbSize, INT thumbPos,
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UINT flags, BOOL vertical,
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BOOL top_selected, BOOL bottom_selected )
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{
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RECT r;
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HPEN hSavePen;
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HBRUSH hSaveBrush,hBrush;
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BOOL Save_SCROLL_MovingThumb = SCROLL_MovingThumb;
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if (Save_SCROLL_MovingThumb &&
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(SCROLL_TrackingWin == hwnd) &&
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(SCROLL_TrackingBar == nBar))
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SCROLL_DrawMovingThumb( hdc, rect, vertical, arrowSize, thumbSize );
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/* Select the correct brush and pen */
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/* Only scrollbar controls send WM_CTLCOLORSCROLLBAR.
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* The window-owned scrollbars need to call DEFWND_ControlColor
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* to correctly setup default scrollbar colors
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*/
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if (nBar == SB_CTL) {
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hBrush = (HBRUSH)SendMessageW( GetParent(hwnd), WM_CTLCOLORSCROLLBAR,
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(WPARAM)hdc,(LPARAM)hwnd);
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} else {
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hBrush = DEFWND_ControlColor( hdc, CTLCOLOR_SCROLLBAR );
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}
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hSavePen = SelectObject( hdc, SYSCOLOR_GetPen(COLOR_WINDOWFRAME) );
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hSaveBrush = SelectObject( hdc, hBrush );
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/* Calculate the scroll rectangle */
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r = *rect;
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if (vertical)
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{
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r.top += arrowSize - SCROLL_ARROW_THUMB_OVERLAP;
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r.bottom -= (arrowSize - SCROLL_ARROW_THUMB_OVERLAP);
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}
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else
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{
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r.left += arrowSize - SCROLL_ARROW_THUMB_OVERLAP;
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r.right -= (arrowSize - SCROLL_ARROW_THUMB_OVERLAP);
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}
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/* Draw the scroll bar frame */
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/* Draw the scroll rectangles and thumb */
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if (!thumbPos) /* No thumb to draw */
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{
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PatBlt( hdc, r.left, r.top, r.right - r.left, r.bottom - r.top, PATCOPY );
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/* cleanup and return */
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SelectObject( hdc, hSavePen );
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SelectObject( hdc, hSaveBrush );
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return;
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}
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if (vertical)
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{
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PatBlt( hdc, r.left, r.top, r.right - r.left,
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thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP),
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top_selected ? 0x0f0000 : PATCOPY );
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r.top += thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP);
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PatBlt( hdc, r.left, r.top + thumbSize, r.right - r.left,
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r.bottom - r.top - thumbSize,
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bottom_selected ? 0x0f0000 : PATCOPY );
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r.bottom = r.top + thumbSize;
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}
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else /* horizontal */
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{
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PatBlt( hdc, r.left, r.top,
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thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP),
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r.bottom - r.top, top_selected ? 0x0f0000 : PATCOPY );
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r.left += thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP);
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PatBlt( hdc, r.left + thumbSize, r.top, r.right - r.left - thumbSize,
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r.bottom - r.top, bottom_selected ? 0x0f0000 : PATCOPY );
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r.right = r.left + thumbSize;
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}
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/* Draw the thumb */
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SelectObject( hdc, GetSysColorBrush(COLOR_BTNFACE) );
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Rectangle( hdc, r.left+1, r.top+1, r.right-1, r.bottom-1 );
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DrawEdge( hdc, &r, EDGE_RAISED, BF_RECT );
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if (Save_SCROLL_MovingThumb &&
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(SCROLL_TrackingWin == hwnd) &&
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(SCROLL_TrackingBar == nBar))
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SCROLL_DrawMovingThumb( hdc, rect, vertical, arrowSize, thumbSize );
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/* cleanup */
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SelectObject( hdc, hSavePen );
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SelectObject( hdc, hSaveBrush );
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}
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/***********************************************************************
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* SCROLL_DrawScrollBar
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*
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* Redraw the whole scrollbar.
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*/
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void SCROLL_DrawScrollBar( HWND hwnd, HDC hdc, INT nBar,
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BOOL arrows, BOOL interior )
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{
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INT arrowSize, thumbSize, thumbPos;
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RECT rect;
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BOOL vertical;
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SCROLLBAR_INFO *infoPtr = SCROLL_GetInternalInfo( hwnd, nBar, TRUE );
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BOOL Save_SCROLL_MovingThumb = SCROLL_MovingThumb;
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DWORD style = GetWindowLongW( hwnd, GWL_STYLE );
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if (!(hwnd = WIN_GetFullHandle( hwnd ))) return;
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if (!infoPtr ||
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((nBar == SB_VERT) && !(style & WS_VSCROLL)) ||
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((nBar == SB_HORZ) && !(style & WS_HSCROLL))) return;
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if (!WIN_IsWindowDrawable( hwnd, FALSE )) return;
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vertical = SCROLL_GetScrollBarRect( hwnd, nBar, &rect,
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&arrowSize, &thumbSize, &thumbPos );
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/* do not draw if the scrollbar rectangle is empty */
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if(IsRectEmpty(&rect)) return;
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if (Save_SCROLL_MovingThumb &&
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(SCROLL_TrackingWin == hwnd) &&
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(SCROLL_TrackingBar == nBar))
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SCROLL_DrawMovingThumb( hdc, &rect, vertical, arrowSize, thumbSize );
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/* Draw the arrows */
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if (arrows && arrowSize)
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{
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if( vertical == SCROLL_trackVertical && GetCapture() == hwnd )
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SCROLL_DrawArrows( hdc, infoPtr, &rect, arrowSize, vertical,
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(SCROLL_trackHitTest == SCROLL_TOP_ARROW),
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(SCROLL_trackHitTest == SCROLL_BOTTOM_ARROW) );
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else
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SCROLL_DrawArrows( hdc, infoPtr, &rect, arrowSize, vertical,
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FALSE, FALSE );
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}
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if( interior )
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SCROLL_DrawInterior( hwnd, hdc, nBar, &rect, arrowSize, thumbSize,
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thumbPos, infoPtr->flags, vertical, FALSE, FALSE );
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if (Save_SCROLL_MovingThumb &&
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(SCROLL_TrackingWin == hwnd) &&
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(SCROLL_TrackingBar == nBar))
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SCROLL_DrawMovingThumb( hdc, &rect, vertical, arrowSize, thumbSize );
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/* if scroll bar has focus, reposition the caret */
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if(hwnd==GetFocus() && (nBar==SB_CTL))
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{
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if (!vertical)
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{
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SetCaretPos(thumbPos+1, rect.top+1);
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}
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else
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{
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SetCaretPos(rect.top+1, thumbPos+1);
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}
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}
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}
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/***********************************************************************
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* SCROLL_DrawSizeGrip
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*
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* Draw the size grip.
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*/
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static void SCROLL_DrawSizeGrip( HWND hwnd, HDC hdc)
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{
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RECT rc;
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GetClientRect( hwnd, &rc );
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FillRect( hdc, &rc, GetSysColorBrush(COLOR_SCROLLBAR) );
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rc.left = max( rc.left, rc.right - GetSystemMetrics(SM_CXVSCROLL) - 1 );
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rc.top = max( rc.top, rc.bottom - GetSystemMetrics(SM_CYHSCROLL) - 1 );
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DrawFrameControl( hdc, &rc, DFC_SCROLL, DFCS_SCROLLSIZEGRIP );
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}
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|
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/***********************************************************************
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* SCROLL_RefreshScrollBar
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*
|
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* Repaint the scroll bar interior after a SetScrollRange() or
|
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* SetScrollPos() call.
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*/
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static void SCROLL_RefreshScrollBar( HWND hwnd, INT nBar,
|
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BOOL arrows, BOOL interior )
|
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{
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|
HDC hdc = GetDCEx( hwnd, 0,
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DCX_CACHE | ((nBar == SB_CTL) ? 0 : DCX_WINDOW) );
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if (!hdc) return;
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|
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SCROLL_DrawScrollBar( hwnd, hdc, nBar, arrows, interior );
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ReleaseDC( hwnd, hdc );
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}
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|
|
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/***********************************************************************
|
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* SCROLL_HandleKbdEvent
|
|
*
|
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* Handle a keyboard event (only for SB_CTL scrollbars with focus).
|
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*
|
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* PARAMS
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|
* hwnd [I] Handle of window with scrollbar(s)
|
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* wParam [I] Variable input including enable state
|
|
* lParam [I] Variable input including input point
|
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*/
|
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static void SCROLL_HandleKbdEvent(HWND hwnd, WPARAM wParam, LPARAM lParam)
|
|
{
|
|
TRACE("hwnd=%p wParam=%ld lParam=%ld\n", hwnd, wParam, lParam);
|
|
|
|
/* hide caret on first KEYDOWN to prevent flicker */
|
|
if ((lParam & PFD_DOUBLEBUFFER_DONTCARE) == 0)
|
|
HideCaret(hwnd);
|
|
|
|
switch(wParam)
|
|
{
|
|
case VK_PRIOR: wParam = SB_PAGEUP; break;
|
|
case VK_NEXT: wParam = SB_PAGEDOWN; break;
|
|
case VK_HOME: wParam = SB_TOP; break;
|
|
case VK_END: wParam = SB_BOTTOM; break;
|
|
case VK_UP: wParam = SB_LINEUP; break;
|
|
case VK_DOWN: wParam = SB_LINEDOWN; break;
|
|
case VK_LEFT: wParam = SB_LINEUP; break;
|
|
case VK_RIGHT: wParam = SB_LINEDOWN; break;
|
|
default: return;
|
|
}
|
|
SendMessageW(GetParent(hwnd),
|
|
((GetWindowLongW( hwnd, GWL_STYLE ) & SBS_VERT) ?
|
|
WM_VSCROLL : WM_HSCROLL), wParam, (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_GetInternalInfo( hwnd, nBar, FALSE );
|
|
if (!infoPtr) return;
|
|
if ((SCROLL_trackHitTest == SCROLL_NOWHERE) && (msg != WM_LBUTTONDOWN))
|
|
return;
|
|
|
|
if (nBar == SB_CTL && (GetWindowLongW( hwnd, GWL_STYLE ) & (SBS_SIZEGRIP | SBS_SIZEBOX)))
|
|
{
|
|
switch(msg)
|
|
{
|
|
case WM_LBUTTONDOWN: /* Initialise mouse tracking */
|
|
HideCaret(hwnd); /* hide caret while holding down LBUTTON */
|
|
SetCapture( hwnd );
|
|
prevPt = pt;
|
|
SCROLL_trackHitTest = hittest = SCROLL_THUMB;
|
|
break;
|
|
case WM_MOUSEMOVE:
|
|
GetClientRect(GetParent(GetParent(hwnd)),&rect);
|
|
prevPt = pt;
|
|
break;
|
|
case WM_LBUTTONUP:
|
|
ReleaseCapture();
|
|
SCROLL_trackHitTest = hittest = SCROLL_NOWHERE;
|
|
if (hwnd==GetFocus()) ShowCaret(hwnd);
|
|
break;
|
|
case WM_SYSTIMER:
|
|
pt = prevPt;
|
|
break;
|
|
}
|
|
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 && (GetWindowLongW(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=%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)
|
|
{
|
|
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))
|
|
{
|
|
SendMessageW( 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))
|
|
{
|
|
SendMessageW( 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;
|
|
SCROLL_TrackingVal = SCROLL_GetThumbVal( infoPtr, &rect,
|
|
vertical,
|
|
SCROLL_TrackingPos );
|
|
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_DrawInterior( hwnd, hdc, nBar, &rect, arrowSize, thumbSize,
|
|
thumbPos, infoPtr->flags, vertical,
|
|
FALSE, FALSE );
|
|
}
|
|
else /* WM_MOUSEMOVE */
|
|
{
|
|
INT 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 );
|
|
SendMessageW( 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))
|
|
{
|
|
SendMessageW( 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))
|
|
{
|
|
SendMessageW( 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_LBUTTONDOWN)
|
|
{
|
|
|
|
if (hittest == SCROLL_THUMB)
|
|
{
|
|
UINT val = SCROLL_GetThumbVal( infoPtr, &rect, vertical,
|
|
trackThumbPos + lastMousePos - lastClickPos );
|
|
SendMessageW( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL,
|
|
MAKEWPARAM( SB_THUMBTRACK, val ), (LPARAM)hwndCtl );
|
|
}
|
|
}
|
|
|
|
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 );
|
|
SendMessageW( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL,
|
|
MAKEWPARAM( SB_THUMBPOSITION, val ), (LPARAM)hwndCtl );
|
|
}
|
|
/* SB_ENDSCROLL doesn't report thumb position */
|
|
SendMessageW( hwndOwner, vertical ? WM_VSCROLL : WM_HSCROLL,
|
|
SB_ENDSCROLL, (LPARAM)hwndCtl );
|
|
|
|
/* Terminate tracking */
|
|
SCROLL_TrackingWin = 0;
|
|
}
|
|
|
|
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 || wndPtr == WND_DESKTOP) 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;
|
|
if (msg.message == WM_LBUTTONUP ||
|
|
msg.message == WM_MOUSEMOVE ||
|
|
(msg.message == WM_SYSTIMER && msg.wParam == SCROLL_TIMER))
|
|
{
|
|
pt.x = (short)LOWORD(msg.lParam) + xoffset;
|
|
pt.y = (short)HIWORD(msg.lParam) + yoffset;
|
|
SCROLL_HandleScrollEvent( hwnd, scrollbar, msg.message, pt );
|
|
}
|
|
else
|
|
{
|
|
TranslateMessage( &msg );
|
|
DispatchMessageW( &msg );
|
|
}
|
|
if (!IsWindow( hwnd ))
|
|
{
|
|
ReleaseCapture();
|
|
break;
|
|
}
|
|
} while (msg.message != WM_LBUTTONUP);
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* SCROLL_CreateScrollBar
|
|
*
|
|
* Create a scroll bar
|
|
*
|
|
* PARAMS
|
|
* hwnd [I] Handle of window with scrollbar(s)
|
|
* lpCreate [I] The style and place of the scroll bar
|
|
*/
|
|
static void SCROLL_CreateScrollBar(HWND hwnd, LPCREATESTRUCTW lpCreate)
|
|
{
|
|
LPSCROLLBAR_INFO info = SCROLL_GetInternalInfo(hwnd, SB_CTL, TRUE);
|
|
if (!info) return;
|
|
|
|
TRACE("hwnd=%p lpCreate=%p\n", hwnd, lpCreate);
|
|
|
|
if (lpCreate->style & WS_DISABLED)
|
|
{
|
|
info->flags = ESB_DISABLE_BOTH;
|
|
TRACE("Created WS_DISABLED scrollbar\n");
|
|
}
|
|
|
|
|
|
if (lpCreate->style & (SBS_SIZEGRIP | SBS_SIZEBOX))
|
|
{
|
|
if (lpCreate->style & SBS_SIZEBOXTOPLEFTALIGN)
|
|
MoveWindow( hwnd, lpCreate->x, lpCreate->y, GetSystemMetrics(SM_CXVSCROLL)+1,
|
|
GetSystemMetrics(SM_CYHSCROLL)+1, FALSE );
|
|
else if(lpCreate->style & SBS_SIZEBOXBOTTOMRIGHTALIGN)
|
|
MoveWindow( hwnd, lpCreate->x+lpCreate->cx-GetSystemMetrics(SM_CXVSCROLL)-1,
|
|
lpCreate->y+lpCreate->cy-GetSystemMetrics(SM_CYHSCROLL)-1,
|
|
GetSystemMetrics(SM_CXVSCROLL)+1,
|
|
GetSystemMetrics(SM_CYHSCROLL)+1, FALSE );
|
|
}
|
|
else if (lpCreate->style & SBS_VERT)
|
|
{
|
|
if (lpCreate->style & SBS_LEFTALIGN)
|
|
MoveWindow( hwnd, lpCreate->x, lpCreate->y,
|
|
GetSystemMetrics(SM_CXVSCROLL)+1, lpCreate->cy, FALSE );
|
|
else if (lpCreate->style & SBS_RIGHTALIGN)
|
|
MoveWindow( hwnd,
|
|
lpCreate->x+lpCreate->cx-GetSystemMetrics(SM_CXVSCROLL)-1,
|
|
lpCreate->y,
|
|
GetSystemMetrics(SM_CXVSCROLL)+1, lpCreate->cy, FALSE );
|
|
}
|
|
else /* SBS_HORZ */
|
|
{
|
|
if (lpCreate->style & SBS_TOPALIGN)
|
|
MoveWindow( hwnd, lpCreate->x, lpCreate->y,
|
|
lpCreate->cx, GetSystemMetrics(SM_CYHSCROLL)+1, FALSE );
|
|
else if (lpCreate->style & SBS_BOTTOMALIGN)
|
|
MoveWindow( hwnd,
|
|
lpCreate->x,
|
|
lpCreate->y+lpCreate->cy-GetSystemMetrics(SM_CYHSCROLL)-1,
|
|
lpCreate->cx, GetSystemMetrics(SM_CYHSCROLL)+1, FALSE );
|
|
}
|
|
}
|
|
|
|
|
|
/*************************************************************************
|
|
* SCROLL_GetScrollInfo
|
|
*
|
|
* Internal helper for the API function
|
|
*
|
|
* PARAMS
|
|
* hwnd [I] Handle of window with scrollbar(s)
|
|
* nBar [I] One of SB_HORZ, SB_VERT, or SB_CTL
|
|
* info [IO] fMask specifies which values to retrieve
|
|
*
|
|
* RETURNS
|
|
* FALSE if requested field not filled (f.i. scroll bar does not exist)
|
|
*/
|
|
static BOOL SCROLL_GetScrollInfo(HWND hwnd, INT nBar, LPSCROLLINFO info)
|
|
{
|
|
LPSCROLLBAR_INFO infoPtr;
|
|
|
|
/* handle invalid data structure */
|
|
if (!SCROLL_ScrollInfoValid(info)
|
|
|| !(infoPtr = SCROLL_GetInternalInfo(hwnd, nBar, FALSE)))
|
|
return FALSE;
|
|
|
|
/* fill in the desired scroll info structure */
|
|
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;
|
|
}
|
|
|
|
TRACE("cbSize %02x fMask %04x nMin %d nMax %d nPage %u nPos %d nTrackPos %d\n",
|
|
info->cbSize, info->fMask, info->nMin, info->nMax, info->nPage,
|
|
info->nPos, info->nTrackPos);
|
|
|
|
return (info->fMask & SIF_ALL) != 0;
|
|
}
|
|
|
|
|
|
/*************************************************************************
|
|
* SCROLL_GetScrollBarInfo
|
|
*
|
|
* Internal helper for the API function
|
|
*
|
|
* PARAMS
|
|
* hwnd [I] Handle of window with scrollbar(s)
|
|
* idObject [I] One of OBJID_CLIENT, OBJID_HSCROLL, or OBJID_VSCROLL
|
|
* info [IO] cbSize specifies the size of the structure
|
|
*
|
|
* RETURNS
|
|
* FALSE if failed
|
|
*/
|
|
static BOOL SCROLL_GetScrollBarInfo(HWND hwnd, LONG idObject, LPSCROLLBARINFO info)
|
|
{
|
|
LPSCROLLBAR_INFO infoPtr;
|
|
INT nBar;
|
|
INT nDummy;
|
|
DWORD style = GetWindowLongW(hwnd, GWL_STYLE);
|
|
BOOL pressed;
|
|
RECT rect;
|
|
|
|
switch (idObject)
|
|
{
|
|
case OBJID_CLIENT: nBar = SB_CTL; break;
|
|
case OBJID_HSCROLL: nBar = SB_HORZ; break;
|
|
case OBJID_VSCROLL: nBar = SB_VERT; break;
|
|
default: return FALSE;
|
|
}
|
|
|
|
/* handle invalid data structure */
|
|
if (info->cbSize != sizeof(*info))
|
|
return FALSE;
|
|
|
|
SCROLL_GetScrollBarRect(hwnd, nBar, &info->rcScrollBar, &nDummy,
|
|
&info->dxyLineButton, &info->xyThumbTop);
|
|
/* rcScrollBar needs to be in screen coordinates */
|
|
GetWindowRect(hwnd, &rect);
|
|
OffsetRect(&info->rcScrollBar, rect.left, rect.top);
|
|
|
|
info->xyThumbBottom = info->xyThumbTop + info->dxyLineButton;
|
|
|
|
infoPtr = SCROLL_GetInternalInfo(hwnd, nBar, TRUE);
|
|
if (!infoPtr)
|
|
return FALSE;
|
|
|
|
/* Scroll bar state */
|
|
info->rgstate[0] = 0;
|
|
if ((nBar == SB_HORZ && !(style & WS_HSCROLL))
|
|
|| (nBar == SB_VERT && !(style & WS_VSCROLL)))
|
|
info->rgstate[0] |= STATE_SYSTEM_INVISIBLE;
|
|
if (infoPtr->minVal >= infoPtr->maxVal - max(infoPtr->page - 1, 0))
|
|
{
|
|
if (!(info->rgstate[0] & STATE_SYSTEM_INVISIBLE))
|
|
info->rgstate[0] |= STATE_SYSTEM_UNAVAILABLE;
|
|
else
|
|
info->rgstate[0] |= STATE_SYSTEM_OFFSCREEN;
|
|
}
|
|
if (nBar == SB_CTL && !IsWindowEnabled(hwnd))
|
|
info->rgstate[0] |= STATE_SYSTEM_UNAVAILABLE;
|
|
|
|
pressed = ((nBar == SB_VERT) == SCROLL_trackVertical && 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)
|
|
info->rgstate[1] |= STATE_SYSTEM_PRESSED;
|
|
if (infoPtr->flags & ESB_DISABLE_LTUP)
|
|
info->rgstate[1] |= STATE_SYSTEM_UNAVAILABLE;
|
|
|
|
/* Page up/left region state. MSDN says up/right, but I don't believe it */
|
|
info->rgstate[2] = 0;
|
|
if (infoPtr->curVal == infoPtr->minVal)
|
|
info->rgstate[2] |= STATE_SYSTEM_INVISIBLE;
|
|
if (pressed && SCROLL_trackHitTest == SCROLL_TOP_RECT)
|
|
info->rgstate[2] |= STATE_SYSTEM_PRESSED;
|
|
|
|
/* Thumb state */
|
|
info->rgstate[3] = 0;
|
|
if (pressed && SCROLL_trackHitTest == 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)
|
|
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)
|
|
info->rgstate[5] |= STATE_SYSTEM_PRESSED;
|
|
if (infoPtr->flags & ESB_DISABLE_RTDN)
|
|
info->rgstate[5] |= STATE_SYSTEM_UNAVAILABLE;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
/*************************************************************************
|
|
* SCROLL_GetScrollPos
|
|
*
|
|
* Internal helper for the API function
|
|
*
|
|
* PARAMS
|
|
* hwnd [I] Handle of window with scrollbar(s)
|
|
* nBar [I] One of SB_HORZ, SB_VERT, or SB_CTL
|
|
*/
|
|
static INT SCROLL_GetScrollPos(HWND hwnd, INT nBar)
|
|
{
|
|
LPSCROLLBAR_INFO infoPtr = SCROLL_GetInternalInfo(hwnd, nBar, FALSE);
|
|
return infoPtr ? infoPtr->curVal: 0;
|
|
}
|
|
|
|
|
|
/*************************************************************************
|
|
* SCROLL_GetScrollRange
|
|
*
|
|
* Internal helper for the API function
|
|
*
|
|
* PARAMS
|
|
* hwnd [I] Handle of window with scrollbar(s)
|
|
* nBar [I] One of SB_HORZ, SB_VERT, or SB_CTL
|
|
* lpMin [O] Where to store minimum value
|
|
* lpMax [O] Where to store maximum value
|
|
*
|
|
* RETURNS
|
|
* Success: TRUE
|
|
* Failure: FALSE
|
|
*/
|
|
static BOOL SCROLL_GetScrollRange(HWND hwnd, INT nBar, LPINT lpMin, LPINT lpMax)
|
|
{
|
|
LPSCROLLBAR_INFO infoPtr = SCROLL_GetInternalInfo(hwnd, nBar, FALSE);
|
|
|
|
if (lpMin) *lpMin = infoPtr ? infoPtr->minVal : 0;
|
|
if (lpMax) *lpMax = infoPtr ? infoPtr->maxVal : 0;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
/*************************************************************************
|
|
* SCROLL_SetScrollRange
|
|
*
|
|
* PARAMS
|
|
* hwnd [I] Handle of window with scrollbar(s)
|
|
* nBar [I] One of SB_HORZ, SB_VERT, or SB_CTL
|
|
* lpMin [I] Minimum value
|
|
* lpMax [I] Maximum value
|
|
*
|
|
*/
|
|
static BOOL SCROLL_SetScrollRange(HWND hwnd, INT nBar, INT minVal, INT maxVal)
|
|
{
|
|
LPSCROLLBAR_INFO infoPtr = SCROLL_GetInternalInfo(hwnd, nBar, FALSE);
|
|
|
|
TRACE("hwnd=%p nBar=%d min=%d max=%d\n", hwnd, nBar, minVal, maxVal);
|
|
|
|
if (infoPtr)
|
|
{
|
|
infoPtr->minVal = minVal;
|
|
infoPtr->maxVal = maxVal;
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* ScrollBarWndProc
|
|
*/
|
|
static LRESULT ScrollBarWndProc( HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam, BOOL unicode )
|
|
{
|
|
if (!IsWindow( hwnd )) return 0;
|
|
|
|
switch(message)
|
|
{
|
|
case WM_CREATE:
|
|
SCROLL_CreateScrollBar(hwnd, (LPCREATESTRUCTW)lParam);
|
|
break;
|
|
|
|
case WM_ENABLE:
|
|
{
|
|
SCROLLBAR_INFO *infoPtr;
|
|
if ((infoPtr = SCROLL_GetInternalInfo( hwnd, SB_CTL, FALSE )))
|
|
{
|
|
infoPtr->flags = wParam ? ESB_ENABLE_BOTH : ESB_DISABLE_BOTH;
|
|
SCROLL_RefreshScrollBar(hwnd, SB_CTL, TRUE, TRUE);
|
|
}
|
|
}
|
|
return 0;
|
|
|
|
case WM_LBUTTONDBLCLK:
|
|
case WM_LBUTTONDOWN:
|
|
{
|
|
POINT pt;
|
|
pt.x = (short)LOWORD(lParam);
|
|
pt.y = (short)HIWORD(lParam);
|
|
SCROLL_TrackScrollBar( hwnd, SB_CTL, pt );
|
|
}
|
|
break;
|
|
case WM_LBUTTONUP:
|
|
case WM_MOUSEMOVE:
|
|
case WM_SYSTIMER:
|
|
{
|
|
POINT pt;
|
|
pt.x = (short)LOWORD(lParam);
|
|
pt.y = (short)HIWORD(lParam);
|
|
SCROLL_HandleScrollEvent( hwnd, SB_CTL, message, pt );
|
|
}
|
|
break;
|
|
|
|
case WM_KEYDOWN:
|
|
SCROLL_HandleKbdEvent(hwnd, wParam, lParam);
|
|
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, (HBITMAP)1, thumbSize-2, rect.bottom-rect.top-2);
|
|
SetCaretPos(thumbPos+1, rect.top+1);
|
|
}
|
|
else
|
|
{
|
|
CreateCaret(hwnd, (HBITMAP)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 = wParam ? (HDC)wParam : BeginPaint(hwnd, &ps);
|
|
if (GetWindowLongW( hwnd, GWL_STYLE ) & SBS_SIZEGRIP)
|
|
{
|
|
SCROLL_DrawSizeGrip( hwnd, hdc);
|
|
}
|
|
else if (GetWindowLongW( hwnd, GWL_STYLE ) & SBS_SIZEBOX)
|
|
{
|
|
RECT rc;
|
|
GetClientRect( hwnd, &rc );
|
|
FillRect( hdc, &rc, GetSysColorBrush(COLOR_SCROLLBAR) );
|
|
}
|
|
else
|
|
SCROLL_DrawScrollBar( hwnd, hdc, SB_CTL, TRUE, TRUE );
|
|
if (!wParam) 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 SCROLL_GetScrollPos(hwnd, SB_CTL);
|
|
|
|
case SBM_SETRANGE16:
|
|
if (wParam) message = SBM_SETRANGEREDRAW;
|
|
wParam = LOWORD(lParam);
|
|
lParam = HIWORD(lParam);
|
|
/* fall through */
|
|
case SBM_SETRANGEREDRAW:
|
|
case SBM_SETRANGE:
|
|
{
|
|
INT oldPos = SCROLL_GetScrollPos( hwnd, SB_CTL );
|
|
SCROLL_SetScrollRange( hwnd, SB_CTL, wParam, lParam );
|
|
if (message == SBM_SETRANGEREDRAW)
|
|
SCROLL_RefreshScrollBar( hwnd, SB_CTL, TRUE, TRUE );
|
|
if (oldPos != SCROLL_GetScrollPos( hwnd, SB_CTL )) return oldPos;
|
|
}
|
|
return 0;
|
|
|
|
case SBM_GETRANGE16:
|
|
{
|
|
INT min, max;
|
|
|
|
SCROLL_GetScrollRange(hwnd, SB_CTL, &min, &max);
|
|
return MAKELRESULT(min, max);
|
|
}
|
|
|
|
case SBM_GETRANGE:
|
|
return SCROLL_GetScrollRange(hwnd, SB_CTL, (LPINT)wParam, (LPINT)lParam);
|
|
|
|
case SBM_ENABLE_ARROWS16:
|
|
case SBM_ENABLE_ARROWS:
|
|
return EnableScrollBar( hwnd, SB_CTL, wParam );
|
|
|
|
case SBM_SETSCROLLINFO:
|
|
return SCROLL_SetScrollInfo( hwnd, SB_CTL, (SCROLLINFO *)lParam, wParam );
|
|
|
|
case SBM_GETSCROLLINFO:
|
|
return SCROLL_GetScrollInfo(hwnd, SB_CTL, (SCROLLINFO *)lParam);
|
|
|
|
case SBM_GETSCROLLBARINFO:
|
|
return SCROLL_GetScrollBarInfo(hwnd, OBJID_CLIENT, (SCROLLBARINFO *)lParam);
|
|
|
|
case 0x00e5:
|
|
case 0x00e7:
|
|
case 0x00e8:
|
|
case 0x00ec:
|
|
case 0x00ed:
|
|
case 0x00ee:
|
|
case 0x00ef:
|
|
ERR("unknown Win32 msg %04x wp=%08lx lp=%08lx\n",
|
|
message, wParam, lParam );
|
|
break;
|
|
|
|
default:
|
|
if (message >= WM_USER)
|
|
WARN("unknown msg %04x wp=%04lx lp=%08lx\n",
|
|
message, wParam, lParam );
|
|
if (unicode)
|
|
return DefWindowProcW( hwnd, message, wParam, lParam );
|
|
else
|
|
return DefWindowProcA( hwnd, message, wParam, lParam );
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* ScrollBarWndProcA
|
|
*/
|
|
static LRESULT WINAPI ScrollBarWndProcA( HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam )
|
|
{
|
|
return ScrollBarWndProc( hwnd, message, wParam, lParam, FALSE );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* ScrollBarWndProcW
|
|
*/
|
|
static LRESULT WINAPI ScrollBarWndProcW( HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam )
|
|
{
|
|
return ScrollBarWndProc( hwnd, message, wParam, lParam, TRUE );
|
|
}
|
|
|
|
|
|
/*************************************************************************
|
|
* SetScrollInfo (USER32.@)
|
|
*
|
|
* SetScrollInfo can be used to set the position, upper bound,
|
|
* lower bound, and page size of a scrollbar control.
|
|
*
|
|
* PARAMS
|
|
* hwnd [I] Handle of window with scrollbar(s)
|
|
* nBar [I] One of SB_HORZ, SB_VERT, or SB_CTL
|
|
* info [I] Specifies what to change and new values
|
|
* bRedraw [I] Should scrollbar be redrawn afterwards?
|
|
*
|
|
* 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, INT nBar, const SCROLLINFO *info, BOOL bRedraw)
|
|
{
|
|
TRACE("hwnd=%p nBar=%d info=%p, bRedraw=%d\n", hwnd, nBar, info, bRedraw);
|
|
|
|
/* Refer SB_CTL requests to the window */
|
|
if (nBar == SB_CTL)
|
|
return SendMessageW(hwnd, SBM_SETSCROLLINFO, bRedraw, (LPARAM)info);
|
|
else
|
|
return SCROLL_SetScrollInfo( hwnd, nBar, info, bRedraw );
|
|
}
|
|
|
|
static INT SCROLL_SetScrollInfo( HWND hwnd, INT nBar, LPCSCROLLINFO info, BOOL bRedraw )
|
|
{
|
|
/* Update the scrollbar state and set action flags according to
|
|
* what has to be done graphics wise. */
|
|
|
|
SCROLLBAR_INFO *infoPtr;
|
|
UINT new_flags;
|
|
INT action = 0;
|
|
|
|
/* handle invalid data structure */
|
|
if (!SCROLL_ScrollInfoValid(info)
|
|
|| !(infoPtr = SCROLL_GetInternalInfo(hwnd, nBar, TRUE)))
|
|
return 0;
|
|
|
|
if (TRACE_ON(scroll))
|
|
{
|
|
TRACE("hwnd=%p bar=%d", hwnd, nBar);
|
|
if (info->fMask & SIF_PAGE) TRACE( " page=%d", info->nPage );
|
|
if (info->fMask & SIF_POS) TRACE( " pos=%d", info->nPos );
|
|
if (info->fMask & SIF_RANGE) TRACE( " min=%d max=%d", info->nMin, info->nMax );
|
|
TRACE("\n");
|
|
}
|
|
|
|
/* Set the page size */
|
|
|
|
if (info->fMask & SIF_PAGE)
|
|
{
|
|
if( infoPtr->page != info->nPage )
|
|
{
|
|
infoPtr->page = info->nPage;
|
|
action |= SA_SSI_REFRESH;
|
|
}
|
|
}
|
|
|
|
/* 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))
|
|
{
|
|
action |= SA_SSI_REFRESH;
|
|
infoPtr->minVal = 0;
|
|
infoPtr->maxVal = 0;
|
|
}
|
|
else
|
|
{
|
|
if( infoPtr->minVal != info->nMin ||
|
|
infoPtr->maxVal != info->nMax )
|
|
{
|
|
action |= SA_SSI_REFRESH;
|
|
infoPtr->minVal = info->nMin;
|
|
infoPtr->maxVal = info->nMax;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* 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) && (action & SA_SSI_REFRESH))
|
|
{
|
|
action = SA_SSI_HIDE;
|
|
}
|
|
}
|
|
else /* Show and enable scroll-bar only if no page only changed. */
|
|
if (info->fMask != SIF_PAGE)
|
|
{
|
|
new_flags = ESB_ENABLE_BOTH;
|
|
if ((nBar != SB_CTL) && ( (action & SA_SSI_REFRESH) ))
|
|
action |= SA_SSI_SHOW;
|
|
}
|
|
|
|
if (infoPtr->flags != new_flags) /* check arrow flags */
|
|
{
|
|
infoPtr->flags = new_flags;
|
|
action |= SA_SSI_REPAINT_ARROWS;
|
|
}
|
|
}
|
|
|
|
done:
|
|
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 infoPtr->curVal; /* SetWindowPos() already did the painting */
|
|
|
|
if( bRedraw )
|
|
SCROLL_RefreshScrollBar( hwnd, nBar, TRUE, TRUE );
|
|
else if( action & SA_SSI_REPAINT_ARROWS )
|
|
SCROLL_RefreshScrollBar( hwnd, nBar, TRUE, FALSE );
|
|
}
|
|
|
|
/* 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.
|
|
*
|
|
* PARAMS
|
|
* hwnd [I] Handle of window with scrollbar(s)
|
|
* nBar [I] One of SB_HORZ, SB_VERT, or SB_CTL
|
|
* info [IO] fMask specifies which values to retrieve
|
|
*
|
|
* RETURNS
|
|
* TRUE if SCROLLINFO is filled
|
|
* ( if nBar is SB_CTL, GetScrollInfo returns TRUE even if nothing
|
|
* is filled)
|
|
*/
|
|
BOOL WINAPI GetScrollInfo(HWND hwnd, INT nBar, LPSCROLLINFO info)
|
|
{
|
|
TRACE("hwnd=%p nBar=%d info=%p\n", hwnd, nBar, info);
|
|
|
|
/* Refer SB_CTL requests to the window */
|
|
if (nBar == SB_CTL)
|
|
{
|
|
SendMessageW(hwnd, SBM_GETSCROLLINFO, (WPARAM)0, (LPARAM)info);
|
|
return TRUE;
|
|
}
|
|
return SCROLL_GetScrollInfo(hwnd, nBar, info);
|
|
}
|
|
|
|
|
|
/*************************************************************************
|
|
* GetScrollBarInfo (USER32.@)
|
|
*
|
|
* GetScrollBarInfo can be used to retrieve information about a scrollbar
|
|
* control.
|
|
*
|
|
* PARAMS
|
|
* hwnd [I] Handle of window with scrollbar(s)
|
|
* idObject [I] One of OBJID_CLIENT, OBJID_HSCROLL, or OBJID_VSCROLL
|
|
* info [IO] cbSize specifies the size of SCROLLBARINFO
|
|
*
|
|
* RETURNS
|
|
* TRUE if success
|
|
*/
|
|
BOOL WINAPI GetScrollBarInfo(HWND hwnd, LONG idObject, LPSCROLLBARINFO info)
|
|
{
|
|
TRACE("hwnd=%p idObject=%d info=%p\n", hwnd, idObject, info);
|
|
|
|
/* Refer OBJID_CLIENT requests to the window */
|
|
if (idObject == OBJID_CLIENT)
|
|
return SendMessageW(hwnd, SBM_GETSCROLLBARINFO, (WPARAM)0, (LPARAM)info);
|
|
else
|
|
return SCROLL_GetScrollBarInfo(hwnd, idObject, info);
|
|
}
|
|
|
|
|
|
/*************************************************************************
|
|
* SetScrollPos (USER32.@)
|
|
*
|
|
* Sets the current position of the scroll thumb.
|
|
*
|
|
* PARAMS
|
|
* hwnd [I] Handle of window with scrollbar(s)
|
|
* nBar [I] One of SB_HORZ, SB_VERT, or SB_CTL
|
|
* nPos [I] New value
|
|
* bRedraw [I] Should scrollbar be redrawn afterwards?
|
|
*
|
|
* 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, INT nBar, INT nPos, BOOL bRedraw)
|
|
{
|
|
SCROLLINFO info;
|
|
SCROLLBAR_INFO *infoPtr;
|
|
INT oldPos;
|
|
|
|
if (!(infoPtr = SCROLL_GetInternalInfo( hwnd, nBar, FALSE ))) 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.@)
|
|
*
|
|
* Gets the current position of the scroll thumb.
|
|
*
|
|
* PARAMS
|
|
* hwnd [I] Handle of window with scrollbar(s)
|
|
* nBar [I] One of SB_HORZ, SB_VERT, or SB_CTL
|
|
*
|
|
* RETURNS
|
|
* Success: Current position
|
|
* Failure: 0
|
|
*
|
|
* REMARKS
|
|
* There is ambiguity when 0 is returned. Use GetLastError
|
|
* to make sure there was an error (and to know which one).
|
|
*/
|
|
INT WINAPI GetScrollPos(HWND hwnd, INT nBar)
|
|
{
|
|
TRACE("hwnd=%p nBar=%d\n", hwnd, nBar);
|
|
|
|
/* Refer SB_CTL requests to the window */
|
|
if (nBar == SB_CTL)
|
|
return SendMessageW(hwnd, SBM_GETPOS, (WPARAM)0, (LPARAM)0);
|
|
else
|
|
return SCROLL_GetScrollPos(hwnd, nBar);
|
|
}
|
|
|
|
|
|
/*************************************************************************
|
|
* SetScrollRange (USER32.@)
|
|
* The SetScrollRange function sets the minimum and maximum scroll box positions
|
|
* If nMinPos and nMaxPos is the same value, the scroll bar will hide
|
|
*
|
|
* Sets the range of the scroll bar.
|
|
*
|
|
* PARAMS
|
|
* hwnd [I] Handle of window with scrollbar(s)
|
|
* nBar [I] One of SB_HORZ, SB_VERT, or SB_CTL
|
|
* minVal [I] New minimum value
|
|
* maxVal [I] New Maximum value
|
|
* bRedraw [I] Should scrollbar be redrawn afterwards?
|
|
*
|
|
* RETURNS
|
|
* Success: TRUE
|
|
* Failure: FALSE
|
|
*/
|
|
BOOL WINAPI SetScrollRange(HWND hwnd, INT nBar, INT minVal, INT maxVal, BOOL bRedraw)
|
|
{
|
|
SCROLLINFO info;
|
|
|
|
TRACE("hwnd=%p nBar=%d min=%d max=%d, bRedraw=%d\n", hwnd, nBar, minVal, maxVal, bRedraw);
|
|
|
|
info.cbSize = sizeof(info);
|
|
info.fMask = SIF_RANGE;
|
|
info.nMin = minVal;
|
|
info.nMax = maxVal;
|
|
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)
|
|
{
|
|
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, TRUE );
|
|
SCROLL_SetScrollInfo( hwnd, SB_HORZ, &hInfo, TRUE );
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
/*************************************************************************
|
|
* GetScrollRange (USER32.@)
|
|
*
|
|
* Gets the range of the scroll bar.
|
|
*
|
|
* PARAMS
|
|
* hwnd [I] Handle of window with scrollbar(s)
|
|
* nBar [I] One of SB_HORZ, SB_VERT, or SB_CTL
|
|
* lpMin [O] Where to store minimum value
|
|
* lpMax [O] Where to store maximum value
|
|
*
|
|
* RETURNS
|
|
* TRUE if values is filled
|
|
*/
|
|
BOOL WINAPI GetScrollRange(HWND hwnd, INT nBar, LPINT lpMin, LPINT lpMax)
|
|
{
|
|
TRACE("hwnd=%p nBar=%d lpMin=%p lpMax=%p\n", hwnd, nBar, lpMin, lpMax);
|
|
|
|
/* Refer SB_CTL requests to the window */
|
|
if (nBar == SB_CTL)
|
|
SendMessageW(hwnd, SBM_GETRANGE, (WPARAM)lpMin, (LPARAM)lpMax);
|
|
else
|
|
SCROLL_GetScrollRange(hwnd, nBar, lpMin, lpMax);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
/*************************************************************************
|
|
* SCROLL_ShowScrollBar()
|
|
*
|
|
* Back-end for ShowScrollBar(). Returns FALSE if no action was taken.
|
|
*/
|
|
static BOOL SCROLL_ShowScrollBar( HWND hwnd, INT nBar, BOOL fShowH, BOOL fShowV )
|
|
{
|
|
ULONG old_style, set_bits = 0, clear_bits = 0;
|
|
|
|
TRACE("hwnd=%p 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) set_bits |= WS_HSCROLL;
|
|
else clear_bits |= WS_HSCROLL;
|
|
if( nBar == SB_HORZ ) break;
|
|
/* fall through */
|
|
case SB_VERT:
|
|
if (fShowV) set_bits |= WS_VSCROLL;
|
|
else clear_bits |= WS_VSCROLL;
|
|
break;
|
|
|
|
default:
|
|
return FALSE; /* Nothing to do! */
|
|
}
|
|
|
|
old_style = WIN_SetStyle( hwnd, set_bits, clear_bits );
|
|
if ((old_style & clear_bits) != 0 || (old_style & set_bits) != set_bits)
|
|
{
|
|
/* frame has been changed, let the window redraw itself */
|
|
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.@)
|
|
*
|
|
* Shows or hides the scroll bar.
|
|
*
|
|
* PARAMS
|
|
* hwnd [I] Handle of window with scrollbar(s)
|
|
* nBar [I] One of SB_HORZ, SB_VERT, or SB_CTL
|
|
* fShow [I] TRUE = show, FALSE = hide
|
|
*
|
|
* RETURNS
|
|
* Success: TRUE
|
|
* Failure: FALSE
|
|
*/
|
|
BOOL WINAPI ShowScrollBar(HWND hwnd, INT nBar, BOOL fShow)
|
|
{
|
|
if ( !hwnd )
|
|
return FALSE;
|
|
|
|
SCROLL_ShowScrollBar( hwnd, nBar, (nBar == SB_VERT) ? 0 : fShow,
|
|
(nBar == SB_HORZ) ? 0 : fShow );
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
/*************************************************************************
|
|
* EnableScrollBar (USER32.@)
|
|
*
|
|
* Enables or disables the scroll bars.
|
|
*/
|
|
BOOL WINAPI EnableScrollBar( HWND hwnd, UINT nBar, UINT flags )
|
|
{
|
|
BOOL bFineWithMe;
|
|
SCROLLBAR_INFO *infoPtr;
|
|
|
|
flags &= ESB_DISABLE_BOTH;
|
|
|
|
if (nBar == SB_BOTH)
|
|
{
|
|
if (!(infoPtr = SCROLL_GetInternalInfo( hwnd, SB_VERT, TRUE ))) 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_GetInternalInfo( hwnd, nBar, TRUE ))) return FALSE;
|
|
if (bFineWithMe && infoPtr->flags == flags) return FALSE;
|
|
infoPtr->flags = flags;
|
|
|
|
SCROLL_RefreshScrollBar( hwnd, nBar, TRUE, TRUE );
|
|
return TRUE;
|
|
}
|