/*
|
/*
|
* tkWinScrollbar.c --
|
* tkWinScrollbar.c --
|
*
|
*
|
* This file implements the Windows specific portion of the scrollbar
|
* This file implements the Windows specific portion of the scrollbar
|
* widget.
|
* widget.
|
*
|
*
|
* Copyright (c) 1996 by Sun Microsystems, Inc.
|
* Copyright (c) 1996 by Sun Microsystems, Inc.
|
*
|
*
|
* See the file "license.terms" for information on usage and redistribution
|
* See the file "license.terms" for information on usage and redistribution
|
* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
|
* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
|
*
|
*
|
* RCS: @(#) $Id: tkWinScrlbr.c,v 1.1.1.1 2002-01-16 10:26:03 markom Exp $
|
* RCS: @(#) $Id: tkWinScrlbr.c,v 1.1.1.1 2002-01-16 10:26:03 markom Exp $
|
*/
|
*/
|
|
|
#include "tkWinInt.h"
|
#include "tkWinInt.h"
|
#include "tkScrollbar.h"
|
#include "tkScrollbar.h"
|
|
|
|
|
/*
|
/*
|
* The following constant is used to specify the maximum scroll position.
|
* The following constant is used to specify the maximum scroll position.
|
* This value is limited by the Win32 API to either 16-bits or 32-bits,
|
* This value is limited by the Win32 API to either 16-bits or 32-bits,
|
* depending on the context. For now we'll just use a value small
|
* depending on the context. For now we'll just use a value small
|
* enough to fit in 16-bits, but which gives us 4-digits of precision.
|
* enough to fit in 16-bits, but which gives us 4-digits of precision.
|
*/
|
*/
|
|
|
#define MAX_SCROLL 10000
|
#define MAX_SCROLL 10000
|
|
|
/*
|
/*
|
* Declaration of Windows specific scrollbar structure.
|
* Declaration of Windows specific scrollbar structure.
|
*/
|
*/
|
|
|
typedef struct WinScrollbar {
|
typedef struct WinScrollbar {
|
TkScrollbar info; /* Generic scrollbar info. */
|
TkScrollbar info; /* Generic scrollbar info. */
|
WNDPROC oldProc; /* Old window procedure. */
|
WNDPROC oldProc; /* Old window procedure. */
|
int lastVertical; /* 1 if was vertical at last refresh. */
|
int lastVertical; /* 1 if was vertical at last refresh. */
|
HWND hwnd; /* Current window handle. */
|
HWND hwnd; /* Current window handle. */
|
int winFlags; /* Various flags; see below. */
|
int winFlags; /* Various flags; see below. */
|
} WinScrollbar;
|
} WinScrollbar;
|
|
|
/*
|
/*
|
* Flag bits for native scrollbars:
|
* Flag bits for native scrollbars:
|
*
|
*
|
* IN_MODAL_LOOP: Non-zero means this scrollbar is in the middle
|
* IN_MODAL_LOOP: Non-zero means this scrollbar is in the middle
|
* of a modal loop.
|
* of a modal loop.
|
* ALREADY_DEAD: Non-zero means this scrollbar has been
|
* ALREADY_DEAD: Non-zero means this scrollbar has been
|
* destroyed, but has not been cleaned up.
|
* destroyed, but has not been cleaned up.
|
*/
|
*/
|
|
|
#define IN_MODAL_LOOP 1
|
#define IN_MODAL_LOOP 1
|
#define ALREADY_DEAD 2
|
#define ALREADY_DEAD 2
|
|
|
/*
|
/*
|
* Cached system metrics used to determine scrollbar geometry.
|
* Cached system metrics used to determine scrollbar geometry.
|
*/
|
*/
|
|
|
static int initialized = 0;
|
static int initialized = 0;
|
static int hArrowWidth, hThumb; /* Horizontal control metrics. */
|
static int hArrowWidth, hThumb; /* Horizontal control metrics. */
|
static int vArrowWidth, vArrowHeight, vThumb; /* Vertical control metrics. */
|
static int vArrowWidth, vArrowHeight, vThumb; /* Vertical control metrics. */
|
|
|
/*
|
/*
|
* This variable holds the default width for a scrollbar in string
|
* This variable holds the default width for a scrollbar in string
|
* form for use in a Tk_ConfigSpec.
|
* form for use in a Tk_ConfigSpec.
|
*/
|
*/
|
|
|
static char defWidth[8];
|
static char defWidth[8];
|
|
|
/*
|
/*
|
* Declarations for functions defined in this file.
|
* Declarations for functions defined in this file.
|
*/
|
*/
|
|
|
static Window CreateProc _ANSI_ARGS_((Tk_Window tkwin,
|
static Window CreateProc _ANSI_ARGS_((Tk_Window tkwin,
|
Window parent, ClientData instanceData));
|
Window parent, ClientData instanceData));
|
static void ModalLoopProc _ANSI_ARGS_((Tk_Window tkwin,
|
static void ModalLoopProc _ANSI_ARGS_((Tk_Window tkwin,
|
XEvent *eventPtr));
|
XEvent *eventPtr));
|
static int ScrollbarBindProc _ANSI_ARGS_((ClientData clientData,
|
static int ScrollbarBindProc _ANSI_ARGS_((ClientData clientData,
|
Tcl_Interp *interp, XEvent *eventPtr,
|
Tcl_Interp *interp, XEvent *eventPtr,
|
Tk_Window tkwin, KeySym keySym));
|
Tk_Window tkwin, KeySym keySym));
|
static LRESULT CALLBACK ScrollbarProc _ANSI_ARGS_((HWND hwnd, UINT message,
|
static LRESULT CALLBACK ScrollbarProc _ANSI_ARGS_((HWND hwnd, UINT message,
|
WPARAM wParam, LPARAM lParam));
|
WPARAM wParam, LPARAM lParam));
|
static void UpdateScrollbar _ANSI_ARGS_((
|
static void UpdateScrollbar _ANSI_ARGS_((
|
WinScrollbar *scrollPtr));
|
WinScrollbar *scrollPtr));
|
static void UpdateScrollbarMetrics _ANSI_ARGS_((void));
|
static void UpdateScrollbarMetrics _ANSI_ARGS_((void));
|
|
|
/*
|
/*
|
* The class procedure table for the scrollbar widget.
|
* The class procedure table for the scrollbar widget.
|
*/
|
*/
|
|
|
TkClassProcs tkpScrollbarProcs = {
|
TkClassProcs tkpScrollbarProcs = {
|
CreateProc, /* createProc */
|
CreateProc, /* createProc */
|
NULL, /* geometryProc */
|
NULL, /* geometryProc */
|
ModalLoopProc, /* modalProc */
|
ModalLoopProc, /* modalProc */
|
};
|
};
|
|
|
|
|
/*
|
/*
|
*----------------------------------------------------------------------
|
*----------------------------------------------------------------------
|
*
|
*
|
* TkpCreateScrollbar --
|
* TkpCreateScrollbar --
|
*
|
*
|
* Allocate a new TkScrollbar structure.
|
* Allocate a new TkScrollbar structure.
|
*
|
*
|
* Results:
|
* Results:
|
* Returns a newly allocated TkScrollbar structure.
|
* Returns a newly allocated TkScrollbar structure.
|
*
|
*
|
* Side effects:
|
* Side effects:
|
* Registers an event handler for the widget.
|
* Registers an event handler for the widget.
|
*
|
*
|
*----------------------------------------------------------------------
|
*----------------------------------------------------------------------
|
*/
|
*/
|
|
|
TkScrollbar *
|
TkScrollbar *
|
TkpCreateScrollbar(tkwin)
|
TkpCreateScrollbar(tkwin)
|
Tk_Window tkwin;
|
Tk_Window tkwin;
|
{
|
{
|
WinScrollbar *scrollPtr;
|
WinScrollbar *scrollPtr;
|
TkWindow *winPtr = (TkWindow *)tkwin;
|
TkWindow *winPtr = (TkWindow *)tkwin;
|
|
|
if (!initialized) {
|
if (!initialized) {
|
UpdateScrollbarMetrics();
|
UpdateScrollbarMetrics();
|
initialized = 1;
|
initialized = 1;
|
}
|
}
|
|
|
scrollPtr = (WinScrollbar *) ckalloc(sizeof(WinScrollbar));
|
scrollPtr = (WinScrollbar *) ckalloc(sizeof(WinScrollbar));
|
scrollPtr->winFlags = 0;
|
scrollPtr->winFlags = 0;
|
scrollPtr->hwnd = NULL;
|
scrollPtr->hwnd = NULL;
|
|
|
Tk_CreateEventHandler(tkwin,
|
Tk_CreateEventHandler(tkwin,
|
ExposureMask|StructureNotifyMask|FocusChangeMask,
|
ExposureMask|StructureNotifyMask|FocusChangeMask,
|
TkScrollbarEventProc, (ClientData) scrollPtr);
|
TkScrollbarEventProc, (ClientData) scrollPtr);
|
|
|
if (!Tcl_GetAssocData(winPtr->mainPtr->interp, "TkScrollbar", NULL)) {
|
if (!Tcl_GetAssocData(winPtr->mainPtr->interp, "TkScrollbar", NULL)) {
|
Tcl_SetAssocData(winPtr->mainPtr->interp, "TkScrollbar", NULL,
|
Tcl_SetAssocData(winPtr->mainPtr->interp, "TkScrollbar", NULL,
|
(ClientData)1);
|
(ClientData)1);
|
TkCreateBindingProcedure(winPtr->mainPtr->interp,
|
TkCreateBindingProcedure(winPtr->mainPtr->interp,
|
winPtr->mainPtr->bindingTable,
|
winPtr->mainPtr->bindingTable,
|
(ClientData)Tk_GetUid("Scrollbar"), "<ButtonPress>",
|
(ClientData)Tk_GetUid("Scrollbar"), "<ButtonPress>",
|
ScrollbarBindProc, NULL, NULL);
|
ScrollbarBindProc, NULL, NULL);
|
}
|
}
|
|
|
return (TkScrollbar*) scrollPtr;
|
return (TkScrollbar*) scrollPtr;
|
}
|
}
|
|
|
/*
|
/*
|
*----------------------------------------------------------------------
|
*----------------------------------------------------------------------
|
*
|
*
|
* UpdateScrollbar --
|
* UpdateScrollbar --
|
*
|
*
|
* This function updates the position and size of the scrollbar
|
* This function updates the position and size of the scrollbar
|
* thumb based on the current settings.
|
* thumb based on the current settings.
|
*
|
*
|
* Results:
|
* Results:
|
* None.
|
* None.
|
*
|
*
|
* Side effects:
|
* Side effects:
|
* Moves the thumb.
|
* Moves the thumb.
|
*
|
*
|
*----------------------------------------------------------------------
|
*----------------------------------------------------------------------
|
*/
|
*/
|
|
|
static void
|
static void
|
UpdateScrollbar(scrollPtr)
|
UpdateScrollbar(scrollPtr)
|
WinScrollbar *scrollPtr;
|
WinScrollbar *scrollPtr;
|
{
|
{
|
SCROLLINFO scrollInfo;
|
SCROLLINFO scrollInfo;
|
double thumbSize;
|
double thumbSize;
|
|
|
/*
|
/*
|
* Update the current scrollbar position and shape.
|
* Update the current scrollbar position and shape.
|
*/
|
*/
|
|
|
scrollInfo.fMask = SIF_PAGE | SIF_POS | SIF_RANGE;
|
scrollInfo.fMask = SIF_PAGE | SIF_POS | SIF_RANGE;
|
scrollInfo.cbSize = sizeof(scrollInfo);
|
scrollInfo.cbSize = sizeof(scrollInfo);
|
scrollInfo.nMin = 0;
|
scrollInfo.nMin = 0;
|
scrollInfo.nMax = MAX_SCROLL;
|
scrollInfo.nMax = MAX_SCROLL;
|
thumbSize = (scrollPtr->info.lastFraction - scrollPtr->info.firstFraction);
|
thumbSize = (scrollPtr->info.lastFraction - scrollPtr->info.firstFraction);
|
if (tkpIsWin32s) {
|
if (tkpIsWin32s) {
|
scrollInfo.nPage = 0;
|
scrollInfo.nPage = 0;
|
} else {
|
} else {
|
scrollInfo.nPage = ((UINT) (thumbSize * (double) MAX_SCROLL)) + 1;
|
scrollInfo.nPage = ((UINT) (thumbSize * (double) MAX_SCROLL)) + 1;
|
}
|
}
|
if (thumbSize < 1.0) {
|
if (thumbSize < 1.0) {
|
scrollInfo.nPos = (int)
|
scrollInfo.nPos = (int)
|
((scrollPtr->info.firstFraction / (1.0-thumbSize))
|
((scrollPtr->info.firstFraction / (1.0-thumbSize))
|
* (MAX_SCROLL - (scrollInfo.nPage - 1)));
|
* (MAX_SCROLL - (scrollInfo.nPage - 1)));
|
} else {
|
} else {
|
scrollInfo.nPos = 0;
|
scrollInfo.nPos = 0;
|
}
|
}
|
SetScrollInfo(scrollPtr->hwnd, SB_CTL, &scrollInfo, TRUE);
|
SetScrollInfo(scrollPtr->hwnd, SB_CTL, &scrollInfo, TRUE);
|
}
|
}
|
|
|
/*
|
/*
|
*----------------------------------------------------------------------
|
*----------------------------------------------------------------------
|
*
|
*
|
* CreateProc --
|
* CreateProc --
|
*
|
*
|
* This function creates a new Scrollbar control, subclasses
|
* This function creates a new Scrollbar control, subclasses
|
* the instance, and generates a new Window object.
|
* the instance, and generates a new Window object.
|
*
|
*
|
* Results:
|
* Results:
|
* Returns the newly allocated Window object, or None on failure.
|
* Returns the newly allocated Window object, or None on failure.
|
*
|
*
|
* Side effects:
|
* Side effects:
|
* Causes a new Scrollbar control to come into existence.
|
* Causes a new Scrollbar control to come into existence.
|
*
|
*
|
*----------------------------------------------------------------------
|
*----------------------------------------------------------------------
|
*/
|
*/
|
|
|
static Window
|
static Window
|
CreateProc(tkwin, parentWin, instanceData)
|
CreateProc(tkwin, parentWin, instanceData)
|
Tk_Window tkwin; /* Token for window. */
|
Tk_Window tkwin; /* Token for window. */
|
Window parentWin; /* Parent of new window. */
|
Window parentWin; /* Parent of new window. */
|
ClientData instanceData; /* Scrollbar instance data. */
|
ClientData instanceData; /* Scrollbar instance data. */
|
{
|
{
|
DWORD style;
|
DWORD style;
|
Window window;
|
Window window;
|
HWND parent;
|
HWND parent;
|
TkWindow *winPtr;
|
TkWindow *winPtr;
|
WinScrollbar *scrollPtr = (WinScrollbar *)instanceData;
|
WinScrollbar *scrollPtr = (WinScrollbar *)instanceData;
|
|
|
parent = Tk_GetHWND(parentWin);
|
parent = Tk_GetHWND(parentWin);
|
|
|
if (scrollPtr->info.vertical) {
|
if (scrollPtr->info.vertical) {
|
style = WS_CHILD | WS_VISIBLE | WS_CLIPCHILDREN | WS_CLIPSIBLINGS
|
style = WS_CHILD | WS_VISIBLE | WS_CLIPCHILDREN | WS_CLIPSIBLINGS
|
| SBS_VERT | SBS_RIGHTALIGN;
|
| SBS_VERT | SBS_RIGHTALIGN;
|
} else {
|
} else {
|
style = WS_CHILD | WS_VISIBLE | WS_CLIPCHILDREN | WS_CLIPSIBLINGS
|
style = WS_CHILD | WS_VISIBLE | WS_CLIPCHILDREN | WS_CLIPSIBLINGS
|
| SBS_HORZ | SBS_BOTTOMALIGN;
|
| SBS_HORZ | SBS_BOTTOMALIGN;
|
}
|
}
|
|
|
scrollPtr->hwnd = CreateWindow("SCROLLBAR", NULL, style,
|
scrollPtr->hwnd = CreateWindow("SCROLLBAR", NULL, style,
|
Tk_X(tkwin), Tk_Y(tkwin), Tk_Width(tkwin), Tk_Height(tkwin),
|
Tk_X(tkwin), Tk_Y(tkwin), Tk_Width(tkwin), Tk_Height(tkwin),
|
parent, NULL, Tk_GetHINSTANCE(), NULL);
|
parent, NULL, Tk_GetHINSTANCE(), NULL);
|
|
|
/*
|
/*
|
* Ensure new window is inserted into the stacking order at the correct
|
* Ensure new window is inserted into the stacking order at the correct
|
* place.
|
* place.
|
*/
|
*/
|
|
|
SetWindowPos(scrollPtr->hwnd, HWND_TOP, 0, 0, 0, 0,
|
SetWindowPos(scrollPtr->hwnd, HWND_TOP, 0, 0, 0, 0,
|
SWP_NOACTIVATE | SWP_NOMOVE | SWP_NOSIZE);
|
SWP_NOACTIVATE | SWP_NOMOVE | SWP_NOSIZE);
|
|
|
for (winPtr = ((TkWindow*)tkwin)->nextPtr; winPtr != NULL;
|
for (winPtr = ((TkWindow*)tkwin)->nextPtr; winPtr != NULL;
|
winPtr = winPtr->nextPtr) {
|
winPtr = winPtr->nextPtr) {
|
if ((winPtr->window != None) && !(winPtr->flags & TK_TOP_LEVEL)) {
|
if ((winPtr->window != None) && !(winPtr->flags & TK_TOP_LEVEL)) {
|
TkWinSetWindowPos(scrollPtr->hwnd, Tk_GetHWND(winPtr->window),
|
TkWinSetWindowPos(scrollPtr->hwnd, Tk_GetHWND(winPtr->window),
|
Below);
|
Below);
|
break;
|
break;
|
}
|
}
|
}
|
}
|
|
|
scrollPtr->lastVertical = scrollPtr->info.vertical;
|
scrollPtr->lastVertical = scrollPtr->info.vertical;
|
scrollPtr->oldProc = (WNDPROC)SetWindowLong(scrollPtr->hwnd, GWL_WNDPROC,
|
scrollPtr->oldProc = (WNDPROC)SetWindowLong(scrollPtr->hwnd, GWL_WNDPROC,
|
(DWORD) ScrollbarProc);
|
(DWORD) ScrollbarProc);
|
window = Tk_AttachHWND(tkwin, scrollPtr->hwnd);
|
window = Tk_AttachHWND(tkwin, scrollPtr->hwnd);
|
|
|
UpdateScrollbar(scrollPtr);
|
UpdateScrollbar(scrollPtr);
|
return window;
|
return window;
|
}
|
}
|
|
|
/*
|
/*
|
*--------------------------------------------------------------
|
*--------------------------------------------------------------
|
*
|
*
|
* TkpDisplayScrollbar --
|
* TkpDisplayScrollbar --
|
*
|
*
|
* This procedure redraws the contents of a scrollbar window.
|
* This procedure redraws the contents of a scrollbar window.
|
* It is invoked as a do-when-idle handler, so it only runs
|
* It is invoked as a do-when-idle handler, so it only runs
|
* when there's nothing else for the application to do.
|
* when there's nothing else for the application to do.
|
*
|
*
|
* Results:
|
* Results:
|
* None.
|
* None.
|
*
|
*
|
* Side effects:
|
* Side effects:
|
* Information appears on the screen.
|
* Information appears on the screen.
|
*
|
*
|
*--------------------------------------------------------------
|
*--------------------------------------------------------------
|
*/
|
*/
|
|
|
void
|
void
|
TkpDisplayScrollbar(clientData)
|
TkpDisplayScrollbar(clientData)
|
ClientData clientData; /* Information about window. */
|
ClientData clientData; /* Information about window. */
|
{
|
{
|
WinScrollbar *scrollPtr = (WinScrollbar *) clientData;
|
WinScrollbar *scrollPtr = (WinScrollbar *) clientData;
|
Tk_Window tkwin = scrollPtr->info.tkwin;
|
Tk_Window tkwin = scrollPtr->info.tkwin;
|
|
|
scrollPtr->info.flags &= ~REDRAW_PENDING;
|
scrollPtr->info.flags &= ~REDRAW_PENDING;
|
if ((tkwin == NULL) || !Tk_IsMapped(tkwin)) {
|
if ((tkwin == NULL) || !Tk_IsMapped(tkwin)) {
|
return;
|
return;
|
}
|
}
|
|
|
/*
|
/*
|
* Destroy and recreate the scrollbar control if the orientation
|
* Destroy and recreate the scrollbar control if the orientation
|
* has changed.
|
* has changed.
|
*/
|
*/
|
|
|
if (scrollPtr->lastVertical != scrollPtr->info.vertical) {
|
if (scrollPtr->lastVertical != scrollPtr->info.vertical) {
|
HWND hwnd = Tk_GetHWND(Tk_WindowId(tkwin));
|
HWND hwnd = Tk_GetHWND(Tk_WindowId(tkwin));
|
|
|
SetWindowLong(hwnd, GWL_WNDPROC, (DWORD) scrollPtr->oldProc);
|
SetWindowLong(hwnd, GWL_WNDPROC, (DWORD) scrollPtr->oldProc);
|
DestroyWindow(hwnd);
|
DestroyWindow(hwnd);
|
|
|
CreateProc(tkwin, Tk_WindowId(Tk_Parent(tkwin)),
|
CreateProc(tkwin, Tk_WindowId(Tk_Parent(tkwin)),
|
(ClientData) scrollPtr);
|
(ClientData) scrollPtr);
|
} else {
|
} else {
|
UpdateScrollbar(scrollPtr);
|
UpdateScrollbar(scrollPtr);
|
}
|
}
|
}
|
}
|
|
|
/*
|
/*
|
*----------------------------------------------------------------------
|
*----------------------------------------------------------------------
|
*
|
*
|
* TkpDestroyScrollbar --
|
* TkpDestroyScrollbar --
|
*
|
*
|
* Free data structures associated with the scrollbar control.
|
* Free data structures associated with the scrollbar control.
|
*
|
*
|
* Results:
|
* Results:
|
* None.
|
* None.
|
*
|
*
|
* Side effects:
|
* Side effects:
|
* Restores the default control state.
|
* Restores the default control state.
|
*
|
*
|
*----------------------------------------------------------------------
|
*----------------------------------------------------------------------
|
*/
|
*/
|
|
|
void
|
void
|
TkpDestroyScrollbar(scrollPtr)
|
TkpDestroyScrollbar(scrollPtr)
|
TkScrollbar *scrollPtr;
|
TkScrollbar *scrollPtr;
|
{
|
{
|
WinScrollbar *winScrollPtr = (WinScrollbar *)scrollPtr;
|
WinScrollbar *winScrollPtr = (WinScrollbar *)scrollPtr;
|
HWND hwnd = winScrollPtr->hwnd;
|
HWND hwnd = winScrollPtr->hwnd;
|
if (hwnd) {
|
if (hwnd) {
|
SetWindowLong(hwnd, GWL_WNDPROC, (DWORD) winScrollPtr->oldProc);
|
SetWindowLong(hwnd, GWL_WNDPROC, (DWORD) winScrollPtr->oldProc);
|
if (winScrollPtr->winFlags & IN_MODAL_LOOP) {
|
if (winScrollPtr->winFlags & IN_MODAL_LOOP) {
|
((TkWindow *)scrollPtr->tkwin)->flags |= TK_DONT_DESTROY_WINDOW;
|
((TkWindow *)scrollPtr->tkwin)->flags |= TK_DONT_DESTROY_WINDOW;
|
SetParent(hwnd, NULL);
|
SetParent(hwnd, NULL);
|
}
|
}
|
}
|
}
|
winScrollPtr->winFlags |= ALREADY_DEAD;
|
winScrollPtr->winFlags |= ALREADY_DEAD;
|
}
|
}
|
|
|
/*
|
/*
|
*----------------------------------------------------------------------
|
*----------------------------------------------------------------------
|
*
|
*
|
* UpdateScrollbarMetrics --
|
* UpdateScrollbarMetrics --
|
*
|
*
|
* This function retrieves the current system metrics for a
|
* This function retrieves the current system metrics for a
|
* scrollbar.
|
* scrollbar.
|
*
|
*
|
* Results:
|
* Results:
|
* None.
|
* None.
|
*
|
*
|
* Side effects:
|
* Side effects:
|
* Updates the geometry cache info for all scrollbars.
|
* Updates the geometry cache info for all scrollbars.
|
*
|
*
|
*----------------------------------------------------------------------
|
*----------------------------------------------------------------------
|
*/
|
*/
|
|
|
void
|
void
|
UpdateScrollbarMetrics()
|
UpdateScrollbarMetrics()
|
{
|
{
|
Tk_ConfigSpec *specPtr;
|
Tk_ConfigSpec *specPtr;
|
|
|
hArrowWidth = GetSystemMetrics(SM_CXHSCROLL);
|
hArrowWidth = GetSystemMetrics(SM_CXHSCROLL);
|
hThumb = GetSystemMetrics(SM_CXHTHUMB);
|
hThumb = GetSystemMetrics(SM_CXHTHUMB);
|
vArrowWidth = GetSystemMetrics(SM_CXVSCROLL);
|
vArrowWidth = GetSystemMetrics(SM_CXVSCROLL);
|
vArrowHeight = GetSystemMetrics(SM_CYVSCROLL);
|
vArrowHeight = GetSystemMetrics(SM_CYVSCROLL);
|
vThumb = GetSystemMetrics(SM_CYVTHUMB);
|
vThumb = GetSystemMetrics(SM_CYVTHUMB);
|
|
|
sprintf(defWidth, "%d", vArrowWidth);
|
sprintf(defWidth, "%d", vArrowWidth);
|
for (specPtr = tkpScrollbarConfigSpecs; specPtr->type != TK_CONFIG_END;
|
for (specPtr = tkpScrollbarConfigSpecs; specPtr->type != TK_CONFIG_END;
|
specPtr++) {
|
specPtr++) {
|
if (specPtr->offset == Tk_Offset(TkScrollbar, width)) {
|
if (specPtr->offset == Tk_Offset(TkScrollbar, width)) {
|
specPtr->defValue = defWidth;
|
specPtr->defValue = defWidth;
|
}
|
}
|
}
|
}
|
}
|
}
|
|
|
/*
|
/*
|
*----------------------------------------------------------------------
|
*----------------------------------------------------------------------
|
*
|
*
|
* TkpComputeScrollbarGeometry --
|
* TkpComputeScrollbarGeometry --
|
*
|
*
|
* After changes in a scrollbar's size or configuration, this
|
* After changes in a scrollbar's size or configuration, this
|
* procedure recomputes various geometry information used in
|
* procedure recomputes various geometry information used in
|
* displaying the scrollbar.
|
* displaying the scrollbar.
|
*
|
*
|
* Results:
|
* Results:
|
* None.
|
* None.
|
*
|
*
|
* Side effects:
|
* Side effects:
|
* The scrollbar will be displayed differently.
|
* The scrollbar will be displayed differently.
|
*
|
*
|
*----------------------------------------------------------------------
|
*----------------------------------------------------------------------
|
*/
|
*/
|
|
|
void
|
void
|
TkpComputeScrollbarGeometry(scrollPtr)
|
TkpComputeScrollbarGeometry(scrollPtr)
|
register TkScrollbar *scrollPtr; /* Scrollbar whose geometry may
|
register TkScrollbar *scrollPtr; /* Scrollbar whose geometry may
|
* have changed. */
|
* have changed. */
|
{
|
{
|
int fieldLength, minThumbSize;
|
int fieldLength, minThumbSize;
|
|
|
/*
|
/*
|
* Windows doesn't use focus rings on scrollbars, but we still
|
* Windows doesn't use focus rings on scrollbars, but we still
|
* perform basic sanity checks to appease backwards compatibility.
|
* perform basic sanity checks to appease backwards compatibility.
|
*/
|
*/
|
|
|
if (scrollPtr->highlightWidth < 0) {
|
if (scrollPtr->highlightWidth < 0) {
|
scrollPtr->highlightWidth = 0;
|
scrollPtr->highlightWidth = 0;
|
}
|
}
|
|
|
if (scrollPtr->vertical) {
|
if (scrollPtr->vertical) {
|
scrollPtr->arrowLength = vArrowHeight;
|
scrollPtr->arrowLength = vArrowHeight;
|
fieldLength = Tk_Height(scrollPtr->tkwin);
|
fieldLength = Tk_Height(scrollPtr->tkwin);
|
minThumbSize = vThumb;
|
minThumbSize = vThumb;
|
} else {
|
} else {
|
scrollPtr->arrowLength = hArrowWidth;
|
scrollPtr->arrowLength = hArrowWidth;
|
fieldLength = Tk_Width(scrollPtr->tkwin);
|
fieldLength = Tk_Width(scrollPtr->tkwin);
|
minThumbSize = hThumb;
|
minThumbSize = hThumb;
|
}
|
}
|
fieldLength -= 2*scrollPtr->arrowLength;
|
fieldLength -= 2*scrollPtr->arrowLength;
|
if (fieldLength < 0) {
|
if (fieldLength < 0) {
|
fieldLength = 0;
|
fieldLength = 0;
|
}
|
}
|
scrollPtr->sliderFirst = (int) ((double)fieldLength
|
scrollPtr->sliderFirst = (int) ((double)fieldLength
|
* scrollPtr->firstFraction);
|
* scrollPtr->firstFraction);
|
scrollPtr->sliderLast = (int) ((double)fieldLength
|
scrollPtr->sliderLast = (int) ((double)fieldLength
|
* scrollPtr->lastFraction);
|
* scrollPtr->lastFraction);
|
|
|
/*
|
/*
|
* Adjust the slider so that some piece of it is always
|
* Adjust the slider so that some piece of it is always
|
* displayed in the scrollbar and so that it has at least
|
* displayed in the scrollbar and so that it has at least
|
* a minimal width (so it can be grabbed with the mouse).
|
* a minimal width (so it can be grabbed with the mouse).
|
*/
|
*/
|
|
|
if (scrollPtr->sliderFirst > fieldLength) {
|
if (scrollPtr->sliderFirst > fieldLength) {
|
scrollPtr->sliderFirst = fieldLength;
|
scrollPtr->sliderFirst = fieldLength;
|
}
|
}
|
if (scrollPtr->sliderFirst < 0) {
|
if (scrollPtr->sliderFirst < 0) {
|
scrollPtr->sliderFirst = 0;
|
scrollPtr->sliderFirst = 0;
|
}
|
}
|
if (scrollPtr->sliderLast < (scrollPtr->sliderFirst
|
if (scrollPtr->sliderLast < (scrollPtr->sliderFirst
|
+ minThumbSize)) {
|
+ minThumbSize)) {
|
scrollPtr->sliderLast = scrollPtr->sliderFirst + minThumbSize;
|
scrollPtr->sliderLast = scrollPtr->sliderFirst + minThumbSize;
|
}
|
}
|
if (scrollPtr->sliderLast > fieldLength) {
|
if (scrollPtr->sliderLast > fieldLength) {
|
scrollPtr->sliderLast = fieldLength;
|
scrollPtr->sliderLast = fieldLength;
|
}
|
}
|
scrollPtr->sliderFirst += scrollPtr->arrowLength;
|
scrollPtr->sliderFirst += scrollPtr->arrowLength;
|
scrollPtr->sliderLast += scrollPtr->arrowLength;
|
scrollPtr->sliderLast += scrollPtr->arrowLength;
|
|
|
/*
|
/*
|
* Register the desired geometry for the window (leave enough space
|
* Register the desired geometry for the window (leave enough space
|
* for the two arrows plus a minimum-size slider, plus border around
|
* for the two arrows plus a minimum-size slider, plus border around
|
* the whole window, if any). Then arrange for the window to be
|
* the whole window, if any). Then arrange for the window to be
|
* redisplayed.
|
* redisplayed.
|
*/
|
*/
|
|
|
if (scrollPtr->vertical) {
|
if (scrollPtr->vertical) {
|
Tk_GeometryRequest(scrollPtr->tkwin,
|
Tk_GeometryRequest(scrollPtr->tkwin,
|
scrollPtr->width, 2*scrollPtr->arrowLength + minThumbSize);
|
scrollPtr->width, 2*scrollPtr->arrowLength + minThumbSize);
|
} else {
|
} else {
|
Tk_GeometryRequest(scrollPtr->tkwin,
|
Tk_GeometryRequest(scrollPtr->tkwin,
|
2*scrollPtr->arrowLength + minThumbSize, scrollPtr->width);
|
2*scrollPtr->arrowLength + minThumbSize, scrollPtr->width);
|
}
|
}
|
Tk_SetInternalBorder(scrollPtr->tkwin, 0);
|
Tk_SetInternalBorder(scrollPtr->tkwin, 0);
|
}
|
}
|
|
|
/*
|
/*
|
*----------------------------------------------------------------------
|
*----------------------------------------------------------------------
|
*
|
*
|
* ScrollbarProc --
|
* ScrollbarProc --
|
*
|
*
|
* This function is call by Windows whenever an event occurs on
|
* This function is call by Windows whenever an event occurs on
|
* a scrollbar control created by Tk.
|
* a scrollbar control created by Tk.
|
*
|
*
|
* Results:
|
* Results:
|
* Standard Windows return value.
|
* Standard Windows return value.
|
*
|
*
|
* Side effects:
|
* Side effects:
|
* May generate events.
|
* May generate events.
|
*
|
*
|
*----------------------------------------------------------------------
|
*----------------------------------------------------------------------
|
*/
|
*/
|
|
|
static LRESULT CALLBACK
|
static LRESULT CALLBACK
|
ScrollbarProc(hwnd, message, wParam, lParam)
|
ScrollbarProc(hwnd, message, wParam, lParam)
|
HWND hwnd;
|
HWND hwnd;
|
UINT message;
|
UINT message;
|
WPARAM wParam;
|
WPARAM wParam;
|
LPARAM lParam;
|
LPARAM lParam;
|
{
|
{
|
LRESULT result;
|
LRESULT result;
|
POINT point;
|
POINT point;
|
WinScrollbar *scrollPtr;
|
WinScrollbar *scrollPtr;
|
Tk_Window tkwin = Tk_HWNDToWindow(hwnd);
|
Tk_Window tkwin = Tk_HWNDToWindow(hwnd);
|
|
|
if (tkwin == NULL) {
|
if (tkwin == NULL) {
|
panic("ScrollbarProc called on an invalid HWND");
|
panic("ScrollbarProc called on an invalid HWND");
|
}
|
}
|
scrollPtr = (WinScrollbar *)((TkWindow*)tkwin)->instanceData;
|
scrollPtr = (WinScrollbar *)((TkWindow*)tkwin)->instanceData;
|
|
|
switch(message) {
|
switch(message) {
|
case WM_HSCROLL:
|
case WM_HSCROLL:
|
case WM_VSCROLL: {
|
case WM_VSCROLL: {
|
Tcl_Interp *interp;
|
Tcl_Interp *interp;
|
Tcl_DString cmdString;
|
Tcl_DString cmdString;
|
int command = LOWORD(wParam);
|
int command = LOWORD(wParam);
|
int code;
|
int code;
|
|
|
GetCursorPos(&point);
|
GetCursorPos(&point);
|
Tk_TranslateWinEvent(NULL, WM_MOUSEMOVE, 0,
|
Tk_TranslateWinEvent(NULL, WM_MOUSEMOVE, 0,
|
MAKELPARAM(point.x, point.y), &result);
|
MAKELPARAM(point.x, point.y), &result);
|
|
|
if (command == SB_ENDSCROLL) {
|
if (command == SB_ENDSCROLL) {
|
return 0;
|
return 0;
|
}
|
}
|
|
|
/*
|
/*
|
* Bail out immediately if there isn't a command to invoke.
|
* Bail out immediately if there isn't a command to invoke.
|
*/
|
*/
|
|
|
if (scrollPtr->info.commandSize == 0) {
|
if (scrollPtr->info.commandSize == 0) {
|
Tcl_ServiceAll();
|
Tcl_ServiceAll();
|
return 0;
|
return 0;
|
}
|
}
|
|
|
Tcl_DStringInit(&cmdString);
|
Tcl_DStringInit(&cmdString);
|
Tcl_DStringAppend(&cmdString, scrollPtr->info.command,
|
Tcl_DStringAppend(&cmdString, scrollPtr->info.command,
|
scrollPtr->info.commandSize);
|
scrollPtr->info.commandSize);
|
|
|
if (command == SB_LINELEFT || command == SB_LINERIGHT) {
|
if (command == SB_LINELEFT || command == SB_LINERIGHT) {
|
Tcl_DStringAppendElement(&cmdString, "scroll");
|
Tcl_DStringAppendElement(&cmdString, "scroll");
|
Tcl_DStringAppendElement(&cmdString,
|
Tcl_DStringAppendElement(&cmdString,
|
(command == SB_LINELEFT ) ? "-1" : "1");
|
(command == SB_LINELEFT ) ? "-1" : "1");
|
Tcl_DStringAppendElement(&cmdString, "units");
|
Tcl_DStringAppendElement(&cmdString, "units");
|
} else if (command == SB_PAGELEFT || command == SB_PAGERIGHT) {
|
} else if (command == SB_PAGELEFT || command == SB_PAGERIGHT) {
|
Tcl_DStringAppendElement(&cmdString, "scroll");
|
Tcl_DStringAppendElement(&cmdString, "scroll");
|
Tcl_DStringAppendElement(&cmdString,
|
Tcl_DStringAppendElement(&cmdString,
|
(command == SB_PAGELEFT ) ? "-1" : "1");
|
(command == SB_PAGELEFT ) ? "-1" : "1");
|
Tcl_DStringAppendElement(&cmdString, "pages");
|
Tcl_DStringAppendElement(&cmdString, "pages");
|
} else {
|
} else {
|
char valueString[TCL_DOUBLE_SPACE];
|
char valueString[TCL_DOUBLE_SPACE];
|
double pos = 0.0;
|
double pos = 0.0;
|
switch (command) {
|
switch (command) {
|
case SB_THUMBPOSITION:
|
case SB_THUMBPOSITION:
|
pos = ((double)HIWORD(wParam)) / MAX_SCROLL;
|
pos = ((double)HIWORD(wParam)) / MAX_SCROLL;
|
break;
|
break;
|
|
|
case SB_THUMBTRACK:
|
case SB_THUMBTRACK:
|
pos = ((double)HIWORD(wParam)) / MAX_SCROLL;
|
pos = ((double)HIWORD(wParam)) / MAX_SCROLL;
|
break;
|
break;
|
|
|
case SB_TOP:
|
case SB_TOP:
|
pos = 0.0;
|
pos = 0.0;
|
break;
|
break;
|
|
|
case SB_BOTTOM:
|
case SB_BOTTOM:
|
pos = 1.0;
|
pos = 1.0;
|
break;
|
break;
|
}
|
}
|
sprintf(valueString, "%g", pos);
|
sprintf(valueString, "%g", pos);
|
Tcl_DStringAppendElement(&cmdString, "moveto");
|
Tcl_DStringAppendElement(&cmdString, "moveto");
|
Tcl_DStringAppendElement(&cmdString, valueString);
|
Tcl_DStringAppendElement(&cmdString, valueString);
|
}
|
}
|
|
|
interp = scrollPtr->info.interp;
|
interp = scrollPtr->info.interp;
|
code = Tcl_GlobalEval(interp, cmdString.string);
|
code = Tcl_GlobalEval(interp, cmdString.string);
|
if (code != TCL_OK && code != TCL_CONTINUE && code != TCL_BREAK) {
|
if (code != TCL_OK && code != TCL_CONTINUE && code != TCL_BREAK) {
|
Tcl_AddErrorInfo(interp, "\n (scrollbar command)");
|
Tcl_AddErrorInfo(interp, "\n (scrollbar command)");
|
Tcl_BackgroundError(interp);
|
Tcl_BackgroundError(interp);
|
}
|
}
|
Tcl_DStringFree(&cmdString);
|
Tcl_DStringFree(&cmdString);
|
|
|
Tcl_ServiceAll();
|
Tcl_ServiceAll();
|
return 0;
|
return 0;
|
}
|
}
|
|
|
default:
|
default:
|
if (Tk_TranslateWinEvent(hwnd, message, wParam, lParam, &result)) {
|
if (Tk_TranslateWinEvent(hwnd, message, wParam, lParam, &result)) {
|
return result;
|
return result;
|
}
|
}
|
}
|
}
|
return CallWindowProc(scrollPtr->oldProc, hwnd, message, wParam, lParam);
|
return CallWindowProc(scrollPtr->oldProc, hwnd, message, wParam, lParam);
|
}
|
}
|
|
|
/*
|
/*
|
*----------------------------------------------------------------------
|
*----------------------------------------------------------------------
|
*
|
*
|
* TkpConfigureScrollbar --
|
* TkpConfigureScrollbar --
|
*
|
*
|
* This procedure is called after the generic code has finished
|
* This procedure is called after the generic code has finished
|
* processing configuration options, in order to configure
|
* processing configuration options, in order to configure
|
* platform specific options.
|
* platform specific options.
|
*
|
*
|
* Results:
|
* Results:
|
* None.
|
* None.
|
*
|
*
|
* Side effects:
|
* Side effects:
|
* None.
|
* None.
|
*
|
*
|
*----------------------------------------------------------------------
|
*----------------------------------------------------------------------
|
*/
|
*/
|
|
|
void
|
void
|
TkpConfigureScrollbar(scrollPtr)
|
TkpConfigureScrollbar(scrollPtr)
|
register TkScrollbar *scrollPtr; /* Information about widget; may or
|
register TkScrollbar *scrollPtr; /* Information about widget; may or
|
* may not already have values for
|
* may not already have values for
|
* some fields. */
|
* some fields. */
|
{
|
{
|
}
|
}
|
|
|
/*
|
/*
|
*--------------------------------------------------------------
|
*--------------------------------------------------------------
|
*
|
*
|
* ScrollbarBindProc --
|
* ScrollbarBindProc --
|
*
|
*
|
* This procedure is invoked when the default <ButtonPress>
|
* This procedure is invoked when the default <ButtonPress>
|
* binding on the Scrollbar bind tag fires.
|
* binding on the Scrollbar bind tag fires.
|
*
|
*
|
* Results:
|
* Results:
|
* None.
|
* None.
|
*
|
*
|
* Side effects:
|
* Side effects:
|
* The event enters a modal loop.
|
* The event enters a modal loop.
|
*
|
*
|
*--------------------------------------------------------------
|
*--------------------------------------------------------------
|
*/
|
*/
|
|
|
static int
|
static int
|
ScrollbarBindProc(clientData, interp, eventPtr, tkwin, keySym)
|
ScrollbarBindProc(clientData, interp, eventPtr, tkwin, keySym)
|
ClientData clientData;
|
ClientData clientData;
|
Tcl_Interp *interp;
|
Tcl_Interp *interp;
|
XEvent *eventPtr;
|
XEvent *eventPtr;
|
Tk_Window tkwin;
|
Tk_Window tkwin;
|
KeySym keySym;
|
KeySym keySym;
|
{
|
{
|
TkWindow *winPtr = (TkWindow*)tkwin;
|
TkWindow *winPtr = (TkWindow*)tkwin;
|
if (eventPtr->type == ButtonPress) {
|
if (eventPtr->type == ButtonPress) {
|
winPtr->flags |= TK_DEFER_MODAL;
|
winPtr->flags |= TK_DEFER_MODAL;
|
}
|
}
|
return TCL_OK;
|
return TCL_OK;
|
}
|
}
|
|
|
/*
|
/*
|
*----------------------------------------------------------------------
|
*----------------------------------------------------------------------
|
*
|
*
|
* ModalLoopProc --
|
* ModalLoopProc --
|
*
|
*
|
* This function is invoked at the end of the event processing
|
* This function is invoked at the end of the event processing
|
* whenever the ScrollbarBindProc has been invoked for a ButtonPress
|
* whenever the ScrollbarBindProc has been invoked for a ButtonPress
|
* event.
|
* event.
|
*
|
*
|
* Results:
|
* Results:
|
* None.
|
* None.
|
*
|
*
|
* Side effects:
|
* Side effects:
|
* Enters a modal loop.
|
* Enters a modal loop.
|
*
|
*
|
*----------------------------------------------------------------------
|
*----------------------------------------------------------------------
|
*/
|
*/
|
|
|
static void
|
static void
|
ModalLoopProc(tkwin, eventPtr)
|
ModalLoopProc(tkwin, eventPtr)
|
Tk_Window tkwin;
|
Tk_Window tkwin;
|
XEvent *eventPtr;
|
XEvent *eventPtr;
|
{
|
{
|
TkWindow *winPtr = (TkWindow*)tkwin;
|
TkWindow *winPtr = (TkWindow*)tkwin;
|
WinScrollbar *scrollPtr = (WinScrollbar *) winPtr->instanceData;
|
WinScrollbar *scrollPtr = (WinScrollbar *) winPtr->instanceData;
|
int oldMode;
|
int oldMode;
|
|
|
Tcl_Preserve((ClientData)scrollPtr);
|
Tcl_Preserve((ClientData)scrollPtr);
|
scrollPtr->winFlags |= IN_MODAL_LOOP;
|
scrollPtr->winFlags |= IN_MODAL_LOOP;
|
oldMode = Tcl_SetServiceMode(TCL_SERVICE_ALL);
|
oldMode = Tcl_SetServiceMode(TCL_SERVICE_ALL);
|
TkWinResendEvent(scrollPtr->oldProc, scrollPtr->hwnd, eventPtr);
|
TkWinResendEvent(scrollPtr->oldProc, scrollPtr->hwnd, eventPtr);
|
(void) Tcl_SetServiceMode(oldMode);
|
(void) Tcl_SetServiceMode(oldMode);
|
scrollPtr->winFlags &= ~IN_MODAL_LOOP;
|
scrollPtr->winFlags &= ~IN_MODAL_LOOP;
|
if (scrollPtr->hwnd && scrollPtr->winFlags & ALREADY_DEAD) {
|
if (scrollPtr->hwnd && scrollPtr->winFlags & ALREADY_DEAD) {
|
DestroyWindow(scrollPtr->hwnd);
|
DestroyWindow(scrollPtr->hwnd);
|
}
|
}
|
Tcl_Release((ClientData)scrollPtr);
|
Tcl_Release((ClientData)scrollPtr);
|
}
|
}
|
|
|
/*
|
/*
|
*--------------------------------------------------------------
|
*--------------------------------------------------------------
|
*
|
*
|
* TkpScrollbarPosition --
|
* TkpScrollbarPosition --
|
*
|
*
|
* Determine the scrollbar element corresponding to a
|
* Determine the scrollbar element corresponding to a
|
* given position.
|
* given position.
|
*
|
*
|
* Results:
|
* Results:
|
* One of TOP_ARROW, TOP_GAP, etc., indicating which element
|
* One of TOP_ARROW, TOP_GAP, etc., indicating which element
|
* of the scrollbar covers the position given by (x, y). If
|
* of the scrollbar covers the position given by (x, y). If
|
* (x,y) is outside the scrollbar entirely, then OUTSIDE is
|
* (x,y) is outside the scrollbar entirely, then OUTSIDE is
|
* returned.
|
* returned.
|
*
|
*
|
* Side effects:
|
* Side effects:
|
* None.
|
* None.
|
*
|
*
|
*--------------------------------------------------------------
|
*--------------------------------------------------------------
|
*/
|
*/
|
|
|
int
|
int
|
TkpScrollbarPosition(scrollPtr, x, y)
|
TkpScrollbarPosition(scrollPtr, x, y)
|
register TkScrollbar *scrollPtr; /* Scrollbar widget record. */
|
register TkScrollbar *scrollPtr; /* Scrollbar widget record. */
|
int x, y; /* Coordinates within scrollPtr's
|
int x, y; /* Coordinates within scrollPtr's
|
* window. */
|
* window. */
|
{
|
{
|
int length, width, tmp;
|
int length, width, tmp;
|
|
|
if (scrollPtr->vertical) {
|
if (scrollPtr->vertical) {
|
length = Tk_Height(scrollPtr->tkwin);
|
length = Tk_Height(scrollPtr->tkwin);
|
width = Tk_Width(scrollPtr->tkwin);
|
width = Tk_Width(scrollPtr->tkwin);
|
} else {
|
} else {
|
tmp = x;
|
tmp = x;
|
x = y;
|
x = y;
|
y = tmp;
|
y = tmp;
|
length = Tk_Width(scrollPtr->tkwin);
|
length = Tk_Width(scrollPtr->tkwin);
|
width = Tk_Height(scrollPtr->tkwin);
|
width = Tk_Height(scrollPtr->tkwin);
|
}
|
}
|
|
|
if ((x < scrollPtr->inset) || (x >= (width - scrollPtr->inset))
|
if ((x < scrollPtr->inset) || (x >= (width - scrollPtr->inset))
|
|| (y < scrollPtr->inset) || (y >= (length - scrollPtr->inset))) {
|
|| (y < scrollPtr->inset) || (y >= (length - scrollPtr->inset))) {
|
return OUTSIDE;
|
return OUTSIDE;
|
}
|
}
|
|
|
/*
|
/*
|
* All of the calculations in this procedure mirror those in
|
* All of the calculations in this procedure mirror those in
|
* TkpDisplayScrollbar. Be sure to keep the two consistent.
|
* TkpDisplayScrollbar. Be sure to keep the two consistent.
|
*/
|
*/
|
|
|
if (y < (scrollPtr->inset + scrollPtr->arrowLength)) {
|
if (y < (scrollPtr->inset + scrollPtr->arrowLength)) {
|
return TOP_ARROW;
|
return TOP_ARROW;
|
}
|
}
|
if (y < scrollPtr->sliderFirst) {
|
if (y < scrollPtr->sliderFirst) {
|
return TOP_GAP;
|
return TOP_GAP;
|
}
|
}
|
if (y < scrollPtr->sliderLast) {
|
if (y < scrollPtr->sliderLast) {
|
return SLIDER;
|
return SLIDER;
|
}
|
}
|
if (y >= (length - (scrollPtr->arrowLength + scrollPtr->inset))) {
|
if (y >= (length - (scrollPtr->arrowLength + scrollPtr->inset))) {
|
return BOTTOM_ARROW;
|
return BOTTOM_ARROW;
|
}
|
}
|
return BOTTOM_GAP;
|
return BOTTOM_GAP;
|
}
|
}
|
|
|
