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utils/mxtk/mxscrollbar.cpp

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+//
+//                 mxToolKit (c) 1999 by Mete Ciragan
+//
+// file:           mxScrollbar.cpp
+// implementation: Win32 API
+// last modified:  Mar 18 1999, Mete Ciragan
+// copyright:      The programs and associated files contained in this
+//                 distribution were developed by Mete Ciragan. The programs
+//                 are not in the public domain, but they are freely
+//                 distributable without licensing fees. These programs are
+//                 provided without guarantee or warrantee expressed or
+//                 implied.
+//
+#include "mxtk/mxScrollbar.h"
+#include <windows.h>
+#include <commctrl.h>
+
+
+
+class mxScrollbar_i
+{
+public:
+	int dummy;
+};
+
+
+
+mxScrollbar::mxScrollbar (mxWindow *parent, int x, int y, int w, int h, int id, int style)
+: mxWidget (parent, x, y, w, h)
+{
+	if (!parent)
+		return;
+
+	DWORD dwStyle = WS_CHILD | WS_VISIBLE;
+	HWND hwndParent = (HWND) ((mxWidget *) parent)->getHandle ();
+
+	if (style == Horizontal)
+		dwStyle = WS_CHILD | WS_VISIBLE | SBS_HORZ | SBS_RIGHTALIGN;
+	else if (style == Vertical)
+		dwStyle = WS_CHILD | WS_VISIBLE | SBS_VERT | SBS_RIGHTALIGN; // WS_VSCROLL;
+
+	void *handle = (void *) CreateWindowEx (0, "SCROLLBAR", "", dwStyle,
+				x, y, w, h, hwndParent,
+				(HMENU) id, (HINSTANCE) GetModuleHandle (NULL), NULL);
+	
+	SendMessage ((HWND) handle, WM_SETFONT, (WPARAM) (HFONT) GetStockObject (ANSI_VAR_FONT), MAKELPARAM (TRUE, 0));
+	SetWindowLong ((HWND) handle, GWL_USERDATA, (LONG) this);
+
+	setHandle (handle);
+	setType (MX_SCROLLBAR);
+	setParent (parent);
+	setId (id);
+}
+
+
+
+mxScrollbar::~mxScrollbar ()
+{
+}
+
+
+
+void
+mxScrollbar::setValue (int ivalue)
+{
+	SetScrollPos( (HWND) getHandle (), SB_CTL, ivalue, FALSE );
+}
+	
+
+
+void
+mxScrollbar::setRange (int min, int max )
+{
+	SCROLLINFO si = { sizeof( SCROLLINFO ), SIF_RANGE, min, max, 0, 0, 0 };
+
+	SetScrollInfo( (HWND) getHandle (), SB_CTL, &si, TRUE );
+}
+
+
+
+void
+mxScrollbar::setPagesize (int size)
+{
+	SCROLLINFO si = { sizeof( SCROLLINFO ), SIF_PAGE, 0, 0, (UINT)size, 0, 0 };
+
+	SetScrollInfo( (HWND) getHandle (), SB_CTL, &si, TRUE );
+}
+
+
+
+int
+mxScrollbar::getValue () const
+{
+	// SCROLLINFO si = { sizeof( SCROLLINFO ), SIF_POS | SIF_TRACKPOS, 0, 0, 0, 0, 0 };
+	// GetScrollInfo( (HWND) getHandle (), SB_CTL, &si );
+	// return si.nPos;
+	return GetScrollPos( (HWND) getHandle (), SB_CTL );
+}
+
+
+
+int
+mxScrollbar::getMinValue () const
+{
+	SCROLLINFO si = { sizeof( SCROLLINFO ), SIF_RANGE, 0, 0, 0, 0, 0 };
+
+	GetScrollInfo( (HWND) getHandle (), SB_CTL, &si );
+
+	return si.nMin;
+}
+
+
+
+int
+mxScrollbar::getMaxValue () const
+{
+	SCROLLINFO si = { sizeof( SCROLLINFO ), SIF_RANGE, 0, 0, 0, 0, 0 };
+
+	GetScrollInfo( (HWND) getHandle (), SB_CTL, &si );
+
+	return si.nMax;
+}
+
+
+
+int
+mxScrollbar::getPagesize () const
+{
+	SCROLLINFO si = { sizeof( SCROLLINFO ), SIF_PAGE, 0, 0, 0, 0, 0 };
+
+	GetScrollInfo( (HWND) getHandle (), SB_CTL, &si );
+
+	return si.nPage;
+}