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2f1c7b1610
When dragging the scrollbar thumb with the mouse, the mouse is able to move away from the scrollbar and keep scrolling so long as it isn't too far away from the scrollbar. This makes it easier to quickly scroll with the mouse. All that this patch changes is the distance that the mouse can be moved away from the scrollbar before it is consider outside of the scrollbar and returns to its original position. The distances are proportional to the size of the scrollbar.
2072 lines
66 KiB
C
2072 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 );
|
|
|
|
SCROLL_MovingThumb = !SCROLL_MovingThumb;
|
|
}
|
|
|
|
/***********************************************************************
|
|
* SCROLL_DrawInterior
|
|
*
|
|
* Draw the scroll bar interior (everything except the arrows).
|
|
*/
|
|
static void SCROLL_DrawInterior_9x( HWND hwnd, HDC hdc, INT nBar,
|
|
RECT *rect, INT arrowSize,
|
|
INT thumbSize, INT thumbPos,
|
|
UINT flags, BOOL vertical,
|
|
BOOL top_selected, BOOL bottom_selected )
|
|
{
|
|
RECT r;
|
|
HPEN hSavePen;
|
|
HBRUSH hSaveBrush,hBrush;
|
|
|
|
/* Only scrollbar controls send WM_CTLCOLORSCROLLBAR.
|
|
* The window-owned scrollbars need to call DEFWND_ControlColor
|
|
* to correctly setup default scrollbar colors
|
|
*/
|
|
if (nBar == SB_CTL)
|
|
{
|
|
hBrush = (HBRUSH)SendMessageW( GetParent(hwnd), WM_CTLCOLORSCROLLBAR,
|
|
(WPARAM)hdc,(LPARAM)hwnd);
|
|
}
|
|
else
|
|
{
|
|
hBrush = DEFWND_ControlColor( hdc, CTLCOLOR_SCROLLBAR );
|
|
}
|
|
|
|
hSavePen = SelectObject( hdc, SYSCOLOR_GetPen(COLOR_WINDOWFRAME) );
|
|
hSaveBrush = SelectObject( hdc, hBrush );
|
|
|
|
/* Calculate the scroll rectangle */
|
|
r = *rect;
|
|
if (vertical)
|
|
{
|
|
r.top += arrowSize - SCROLL_ARROW_THUMB_OVERLAP;
|
|
r.bottom -= (arrowSize - SCROLL_ARROW_THUMB_OVERLAP);
|
|
}
|
|
else
|
|
{
|
|
r.left += arrowSize - SCROLL_ARROW_THUMB_OVERLAP;
|
|
r.right -= (arrowSize - SCROLL_ARROW_THUMB_OVERLAP);
|
|
}
|
|
|
|
/* Draw the scroll rectangles and thumb */
|
|
if (!thumbPos) /* No thumb to draw */
|
|
{
|
|
PatBlt( hdc, r.left, r.top,
|
|
r.right - r.left, r.bottom - r.top,
|
|
PATCOPY );
|
|
|
|
/* cleanup and return */
|
|
SelectObject( hdc, hSavePen );
|
|
SelectObject( hdc, hSaveBrush );
|
|
return;
|
|
}
|
|
|
|
if (vertical)
|
|
{
|
|
PatBlt( hdc, r.left, r.top,
|
|
r.right - r.left,
|
|
thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP),
|
|
top_selected ? 0x0f0000 : PATCOPY );
|
|
r.top += thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP);
|
|
PatBlt( hdc, r.left, r.top + thumbSize,
|
|
r.right - r.left,
|
|
r.bottom - r.top - thumbSize,
|
|
bottom_selected ? 0x0f0000 : PATCOPY );
|
|
r.bottom = r.top + thumbSize;
|
|
}
|
|
else /* horizontal */
|
|
{
|
|
PatBlt( hdc, r.left, r.top,
|
|
thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP),
|
|
r.bottom - r.top,
|
|
top_selected ? 0x0f0000 : PATCOPY );
|
|
r.left += thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP);
|
|
PatBlt( hdc, r.left + thumbSize, r.top,
|
|
r.right - r.left - thumbSize,
|
|
r.bottom - r.top,
|
|
bottom_selected ? 0x0f0000 : PATCOPY );
|
|
r.right = r.left + thumbSize;
|
|
}
|
|
|
|
/* Draw the thumb */
|
|
DrawEdge( hdc, &r, EDGE_RAISED, BF_RECT | BF_MIDDLE );
|
|
|
|
/* cleanup */
|
|
SelectObject( hdc, hSavePen );
|
|
SelectObject( hdc, hSaveBrush );
|
|
}
|
|
|
|
|
|
static void SCROLL_DrawInterior( HWND hwnd, HDC hdc, INT nBar,
|
|
RECT *rect, INT arrowSize,
|
|
INT thumbSize, INT thumbPos,
|
|
UINT flags, BOOL vertical,
|
|
BOOL top_selected, BOOL bottom_selected )
|
|
{
|
|
RECT r;
|
|
HPEN hSavePen;
|
|
HBRUSH hSaveBrush,hBrush;
|
|
BOOL Save_SCROLL_MovingThumb = SCROLL_MovingThumb;
|
|
|
|
if (Save_SCROLL_MovingThumb &&
|
|
(SCROLL_TrackingWin == hwnd) &&
|
|
(SCROLL_TrackingBar == nBar))
|
|
SCROLL_DrawMovingThumb( hdc, rect, vertical, arrowSize, thumbSize );
|
|
|
|
/* Select the correct brush and pen */
|
|
|
|
/* Only scrollbar controls send WM_CTLCOLORSCROLLBAR.
|
|
* The window-owned scrollbars need to call DEFWND_ControlColor
|
|
* to correctly setup default scrollbar colors
|
|
*/
|
|
if (nBar == SB_CTL) {
|
|
hBrush = (HBRUSH)SendMessageW( GetParent(hwnd), WM_CTLCOLORSCROLLBAR,
|
|
(WPARAM)hdc,(LPARAM)hwnd);
|
|
} else {
|
|
hBrush = DEFWND_ControlColor( hdc, CTLCOLOR_SCROLLBAR );
|
|
}
|
|
hSavePen = SelectObject( hdc, SYSCOLOR_GetPen(COLOR_WINDOWFRAME) );
|
|
hSaveBrush = SelectObject( hdc, hBrush );
|
|
|
|
/* Calculate the scroll rectangle */
|
|
|
|
r = *rect;
|
|
if (vertical)
|
|
{
|
|
r.top += arrowSize - SCROLL_ARROW_THUMB_OVERLAP;
|
|
r.bottom -= (arrowSize - SCROLL_ARROW_THUMB_OVERLAP);
|
|
}
|
|
else
|
|
{
|
|
r.left += arrowSize - SCROLL_ARROW_THUMB_OVERLAP;
|
|
r.right -= (arrowSize - SCROLL_ARROW_THUMB_OVERLAP);
|
|
}
|
|
|
|
/* Draw the scroll bar frame */
|
|
|
|
/* Draw the scroll rectangles and thumb */
|
|
|
|
if (!thumbPos) /* No thumb to draw */
|
|
{
|
|
PatBlt( hdc, r.left, r.top, r.right - r.left, r.bottom - r.top, PATCOPY );
|
|
|
|
/* cleanup and return */
|
|
SelectObject( hdc, hSavePen );
|
|
SelectObject( hdc, hSaveBrush );
|
|
return;
|
|
}
|
|
|
|
if (vertical)
|
|
{
|
|
PatBlt( hdc, r.left, r.top, r.right - r.left,
|
|
thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP),
|
|
top_selected ? 0x0f0000 : PATCOPY );
|
|
r.top += thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP);
|
|
PatBlt( hdc, r.left, r.top + thumbSize, r.right - r.left,
|
|
r.bottom - r.top - thumbSize,
|
|
bottom_selected ? 0x0f0000 : PATCOPY );
|
|
r.bottom = r.top + thumbSize;
|
|
}
|
|
else /* horizontal */
|
|
{
|
|
PatBlt( hdc, r.left, r.top,
|
|
thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP),
|
|
r.bottom - r.top, top_selected ? 0x0f0000 : PATCOPY );
|
|
r.left += thumbPos - (arrowSize - SCROLL_ARROW_THUMB_OVERLAP);
|
|
PatBlt( hdc, r.left + thumbSize, r.top, r.right - r.left - thumbSize,
|
|
r.bottom - r.top, bottom_selected ? 0x0f0000 : PATCOPY );
|
|
r.right = r.left + thumbSize;
|
|
}
|
|
|
|
/* Draw the thumb */
|
|
|
|
SelectObject( hdc, GetSysColorBrush(COLOR_BTNFACE) );
|
|
Rectangle( hdc, r.left+1, r.top+1, r.right-1, r.bottom-1 );
|
|
DrawEdge( hdc, &r, EDGE_RAISED, BF_RECT );
|
|
|
|
if (Save_SCROLL_MovingThumb &&
|
|
(SCROLL_TrackingWin == hwnd) &&
|
|
(SCROLL_TrackingBar == nBar))
|
|
SCROLL_DrawMovingThumb( hdc, rect, vertical, arrowSize, thumbSize );
|
|
|
|
/* cleanup */
|
|
SelectObject( hdc, hSavePen );
|
|
SelectObject( hdc, hSaveBrush );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* SCROLL_DrawScrollBar
|
|
*
|
|
* Redraw the whole scrollbar.
|
|
*/
|
|
void SCROLL_DrawScrollBar( HWND hwnd, HDC hdc, INT nBar,
|
|
BOOL arrows, BOOL interior )
|
|
{
|
|
INT arrowSize, thumbSize, thumbPos;
|
|
RECT rect;
|
|
BOOL vertical;
|
|
SCROLLBAR_INFO *infoPtr = SCROLL_GetInternalInfo( hwnd, nBar, TRUE );
|
|
BOOL Save_SCROLL_MovingThumb = SCROLL_MovingThumb;
|
|
DWORD style = GetWindowLongW( hwnd, GWL_STYLE );
|
|
|
|
if (!(hwnd = WIN_GetFullHandle( hwnd ))) return;
|
|
|
|
if (!infoPtr ||
|
|
((nBar == SB_VERT) && !(style & WS_VSCROLL)) ||
|
|
((nBar == SB_HORZ) && !(style & WS_HSCROLL))) return;
|
|
if (!WIN_IsWindowDrawable( hwnd, FALSE )) return;
|
|
|
|
vertical = SCROLL_GetScrollBarRect( hwnd, nBar, &rect,
|
|
&arrowSize, &thumbSize, &thumbPos );
|
|
|
|
/* do not draw if the scrollbar rectangle is empty */
|
|
if(IsRectEmpty(&rect)) return;
|
|
|
|
if (Save_SCROLL_MovingThumb &&
|
|
(SCROLL_TrackingWin == hwnd) &&
|
|
(SCROLL_TrackingBar == nBar))
|
|
SCROLL_DrawMovingThumb( hdc, &rect, vertical, arrowSize, thumbSize );
|
|
|
|
/* Draw the arrows */
|
|
|
|
if (arrows && arrowSize)
|
|
{
|
|
if( vertical == SCROLL_trackVertical && GetCapture() == hwnd )
|
|
SCROLL_DrawArrows( hdc, infoPtr, &rect, arrowSize, vertical,
|
|
(SCROLL_trackHitTest == SCROLL_TOP_ARROW),
|
|
(SCROLL_trackHitTest == SCROLL_BOTTOM_ARROW) );
|
|
else
|
|
SCROLL_DrawArrows( hdc, infoPtr, &rect, arrowSize, vertical,
|
|
FALSE, FALSE );
|
|
}
|
|
if( interior )
|
|
SCROLL_DrawInterior( hwnd, hdc, nBar, &rect, arrowSize, thumbSize,
|
|
thumbPos, infoPtr->flags, vertical, FALSE, FALSE );
|
|
|
|
if (Save_SCROLL_MovingThumb &&
|
|
(SCROLL_TrackingWin == hwnd) &&
|
|
(SCROLL_TrackingBar == nBar))
|
|
SCROLL_DrawMovingThumb( hdc, &rect, vertical, arrowSize, thumbSize );
|
|
|
|
/* if scroll bar has focus, reposition the caret */
|
|
if(hwnd==GetFocus() && (nBar==SB_CTL))
|
|
{
|
|
if (!vertical)
|
|
{
|
|
SetCaretPos(thumbPos+1, rect.top+1);
|
|
}
|
|
else
|
|
{
|
|
SetCaretPos(rect.top+1, thumbPos+1);
|
|
}
|
|
}
|
|
}
|
|
|
|
/***********************************************************************
|
|
* SCROLL_DrawSizeGrip
|
|
*
|
|
* Draw the size grip.
|
|
*/
|
|
static void SCROLL_DrawSizeGrip( HWND hwnd, HDC hdc)
|
|
{
|
|
RECT rc;
|
|
|
|
GetClientRect( hwnd, &rc );
|
|
FillRect( hdc, &rc, GetSysColorBrush(COLOR_SCROLLBAR) );
|
|
rc.left = max( rc.left, rc.right - GetSystemMetrics(SM_CXVSCROLL) - 1 );
|
|
rc.top = max( rc.top, rc.bottom - GetSystemMetrics(SM_CYHSCROLL) - 1 );
|
|
DrawFrameControl( hdc, &rc, DFC_SCROLL, DFCS_SCROLLSIZEGRIP );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* SCROLL_RefreshScrollBar
|
|
*
|
|
* Repaint the scroll bar interior after a SetScrollRange() or
|
|
* SetScrollPos() call.
|
|
*/
|
|
static void SCROLL_RefreshScrollBar( HWND hwnd, INT nBar,
|
|
BOOL arrows, BOOL interior )
|
|
{
|
|
HDC hdc = GetDCEx( hwnd, 0,
|
|
DCX_CACHE | ((nBar == SB_CTL) ? 0 : DCX_WINDOW) );
|
|
if (!hdc) return;
|
|
|
|
SCROLL_DrawScrollBar( hwnd, hdc, nBar, arrows, interior );
|
|
ReleaseDC( hwnd, hdc );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* SCROLL_HandleKbdEvent
|
|
*
|
|
* Handle a keyboard event (only for SB_CTL scrollbars with focus).
|
|
*
|
|
* PARAMS
|
|
* hwnd [I] Handle of window with scrollbar(s)
|
|
* wParam [I] Variable input including enable state
|
|
* lParam [I] Variable input including input point
|
|
*/
|
|
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;
|
|
|
|
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);
|
|
|
|
info->xyThumbBottom = info->xyThumbTop + info->dxyLineButton;
|
|
|
|
infoPtr = SCROLL_GetInternalInfo(hwnd, nBar, TRUE);
|
|
|
|
/* 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;
|
|
}
|