src/generic/sashwin.cpp

/////////////////////////////////////////////////////////////////////////////
// Name:        sashwin.cpp
// Purpose:     wxSashWindow implementation. A sash window has an optional
//              sash on each edge, allowing it to be dragged. An event
//              is generated when the sash is released.
// Author:      Julian Smart
// Modified by:
// Created:     01/02/97
// RCS-ID:      $Id$
// Copyright:   (c) Julian Smart
// Licence:     wxWindows license
/////////////////////////////////////////////////////////////////////////////

#ifdef __GNUG__
#pragma implementation "sashwin.h"
#endif

// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"

#ifdef __BORLANDC__
#pragma hdrstop
#endif

#if wxUSE_SASH

#ifndef WX_PRECOMP
#include "wx/wx.h"
#endif

#include <math.h>
#include <stdlib.h>

#include "wx/string.h"
#include "wx/dcscreen.h"
#include "wx/sashwin.h"
#include "wx/laywin.h"

DEFINE_EVENT_TYPE(wxEVT_SASH_DRAGGED)

IMPLEMENT_DYNAMIC_CLASS(wxSashWindow, wxWindow)
IMPLEMENT_DYNAMIC_CLASS(wxSashEvent, wxCommandEvent)

BEGIN_EVENT_TABLE(wxSashWindow, wxWindow)
    EVT_PAINT(wxSashWindow::OnPaint)
    EVT_SIZE(wxSashWindow::OnSize)
    EVT_MOUSE_EVENTS(wxSashWindow::OnMouseEvent)
END_EVENT_TABLE()

bool wxSashWindow::Create(wxWindow *parent, wxWindowID id, const wxPoint& pos,
    const wxSize& size, long style, const wxString& name)
{
    return wxWindow::Create(parent, id, pos, size, style, name);
}

wxSashWindow::~wxSashWindow()
{
    delete m_sashCursorWE;
    delete m_sashCursorNS;
}

void wxSashWindow::Init()
{
    m_draggingEdge = wxSASH_NONE;
    m_dragMode = wxSASH_DRAG_NONE;
    m_oldX = 0;
    m_oldY = 0;
    m_firstX = 0;
    m_firstY = 0;
    m_borderSize = 3;
    m_extraBorderSize = 0;
    m_minimumPaneSizeX = 0;
    m_minimumPaneSizeY = 0;
    m_maximumPaneSizeX = 10000;
    m_maximumPaneSizeY = 10000;
    m_sashCursorWE = new wxCursor(wxCURSOR_SIZEWE);
    m_sashCursorNS = new wxCursor(wxCURSOR_SIZENS);
    m_mouseCaptured = FALSE;

    // Eventually, we'll respond to colour change messages
    InitColours();
}

void wxSashWindow::OnPaint(wxPaintEvent& WXUNUSED(event))
{
    wxPaintDC dc(this);

    //    if ( m_borderSize > 0 )
    DrawBorders(dc);

    DrawSashes(dc);
}

void wxSashWindow::OnMouseEvent(wxMouseEvent& event)
{
    wxCoord x, y;
    event.GetPosition(&x, &y);

    wxSashEdgePosition sashHit = SashHitTest(x, y);

    // reset the cursor
#if defined(__WXMOTIF__) || defined(__WXGTK__)
    // Not necessary and in fact inhibits proper cursor setting (JACS 8/2000)
    //SetCursor(* wxSTANDARD_CURSOR);
#endif
#ifdef __WXMSW__
    SetCursor(wxNullCursor);
#endif

    if (event.LeftDown())
    {
        CaptureMouse();
        m_mouseCaptured = TRUE;

        if ( sashHit != wxSASH_NONE )
        {
            // Required for X to specify that
            // that we wish to draw on top of all windows
            // - and we optimise by specifying the area
            // for creating the overlap window.
            // Find the first frame or dialog and use this to specify
            // the area to draw on.
            wxWindow* parent = this;

            while (parent && !parent->IsKindOf(CLASSINFO(wxDialog)) &&
                             !parent->IsKindOf(CLASSINFO(wxFrame)))
              parent = parent->GetParent();

            wxScreenDC::StartDrawingOnTop(parent);

            // We don't say we're dragging yet; we leave that
            // decision for the Dragging() branch, to ensure
            // the user has dragged a little bit.
            m_dragMode = wxSASH_DRAG_LEFT_DOWN;
            m_draggingEdge = sashHit;
            m_firstX = x;
            m_firstY = y;

            if ( (sashHit == wxSASH_LEFT) || (sashHit == wxSASH_RIGHT) )
            {
                SetCursor(*m_sashCursorWE);
            }
            else
            {
                SetCursor(*m_sashCursorNS);
            }
        }
    }
    else if ( event.LeftUp() && m_dragMode == wxSASH_DRAG_LEFT_DOWN )
    {
        // Wasn't a proper drag
        if (m_mouseCaptured)
            ReleaseMouse();
        m_mouseCaptured = FALSE;

        wxScreenDC::EndDrawingOnTop();
        m_dragMode = wxSASH_DRAG_NONE;
        m_draggingEdge = wxSASH_NONE;
    }
    else if (event.LeftUp() && m_dragMode == wxSASH_DRAG_DRAGGING)
    {
        // We can stop dragging now and see what we've got.
        m_dragMode = wxSASH_DRAG_NONE;
        if (m_mouseCaptured)
            ReleaseMouse();
        m_mouseCaptured = FALSE;

        // Erase old tracker
        DrawSashTracker(m_draggingEdge, m_oldX, m_oldY);

        // End drawing on top (frees the window used for drawing
        // over the screen)
        wxScreenDC::EndDrawingOnTop();

        int w, h;
        GetSize(&w, &h);
        int xp, yp;
        GetPosition(&xp, &yp);

        wxSashEdgePosition edge = m_draggingEdge;
        m_draggingEdge = wxSASH_NONE;

        wxRect dragRect;
        wxSashDragStatus status = wxSASH_STATUS_OK;

        // the new height and width of the window - if -1, it didn't change
        int newHeight = -1,
            newWidth = -1;

        // NB: x and y may be negative and they're relative to the sash window
        //     upper left corner, while xp and yp are expressed in the parent
        //     window system of coordinates, so adjust them! After this
        //     adjustment, all coordinates are relative to the parent window.
        y += yp;
        x += xp;

        switch (edge)
        {
            case wxSASH_TOP:
                if ( y > yp + h )
                {
                    // top sash shouldn't get below the bottom one
                    status = wxSASH_STATUS_OUT_OF_RANGE;
                }
                else
                {
                    newHeight = h - (y - yp);
                }
                break;

            case wxSASH_BOTTOM:
                if ( y < yp )
                {
                    // bottom sash shouldn't get above the top one
                    status = wxSASH_STATUS_OUT_OF_RANGE;
                }
                else
                {
                    newHeight = y - yp;
                }
                break;

            case wxSASH_LEFT:
                if ( x > xp + w )
                {
                    // left sash shouldn't get beyond the right one
                    status = wxSASH_STATUS_OUT_OF_RANGE;
                }
                else
                {
                    newWidth = w - (x - xp);
                }
                break;

            case wxSASH_RIGHT:
                if ( x < xp )
                {
                    // and the right sash, finally, shouldn't be beyond the
                    // left one
                    status = wxSASH_STATUS_OUT_OF_RANGE;
                }
                else
                {
                    newWidth = x - xp;
                }
                break;

            case wxSASH_NONE:
                // can this happen at all?
                break;
        }

        if ( newHeight == -1 )
        {
            // didn't change
            newHeight = h;
        }
        else
        {
            // make sure it's in m_minimumPaneSizeY..m_maximumPaneSizeY range
            newHeight = wxMax(newHeight, m_minimumPaneSizeY);
            newHeight = wxMin(newHeight, m_maximumPaneSizeY);
        }

        if ( newWidth == -1 )
        {
            // didn't change
            newWidth = w;
        }
        else
        {
            // make sure it's in m_minimumPaneSizeY..m_maximumPaneSizeY range
            newWidth = wxMax(newWidth, m_minimumPaneSizeX);
            newWidth = wxMin(newWidth, m_maximumPaneSizeX);
        }

        dragRect = wxRect(x, y, newWidth, newHeight);

        wxSashEvent event(GetId(), edge);
        event.SetEventObject(this);
        event.SetDragStatus(status);
        event.SetDragRect(dragRect);
        GetEventHandler()->ProcessEvent(event);
    }
    else if ( event.LeftUp() )
    {
        if (m_mouseCaptured)
           ReleaseMouse();
        m_mouseCaptured = FALSE;
    }
    else if (event.Moving() && !event.Dragging())
    {
        // Just change the cursor if required
        if ( sashHit != wxSASH_NONE )
        {
            if ( (sashHit == wxSASH_LEFT) || (sashHit == wxSASH_RIGHT) )
            {
                SetCursor(*m_sashCursorWE);
            }
            else
            {
                SetCursor(*m_sashCursorNS);
            }
        }
        else
        {
            SetCursor(wxNullCursor);
        }
    }
    else if ( event.Dragging() &&
              ((m_dragMode == wxSASH_DRAG_DRAGGING) ||
               (m_dragMode == wxSASH_DRAG_LEFT_DOWN)) )
    {
        if ( (m_draggingEdge == wxSASH_LEFT) || (m_draggingEdge == wxSASH_RIGHT) )
        {
            SetCursor(*m_sashCursorWE);
        }
        else
        {
            SetCursor(*m_sashCursorNS);
        }

        if (m_dragMode == wxSASH_DRAG_LEFT_DOWN)
        {
            m_dragMode = wxSASH_DRAG_DRAGGING;
            DrawSashTracker(m_draggingEdge, x, y);
        }
        else
        {
            if ( m_dragMode == wxSASH_DRAG_DRAGGING )
            {
                // Erase old tracker
                DrawSashTracker(m_draggingEdge, m_oldX, m_oldY);

                // Draw new one
                DrawSashTracker(m_draggingEdge, x, y);
            }
        }
        m_oldX = x;
        m_oldY = y;
    }
    else if ( event.LeftDClick() )
    {
        // Nothing
    }
    else
    {
    }
}

void wxSashWindow::OnSize(wxSizeEvent& WXUNUSED(event))
{
    SizeWindows();
}

wxSashEdgePosition wxSashWindow::SashHitTest(int x, int y, int WXUNUSED(tolerance))
{
    int cx, cy;
    GetClientSize(& cx, & cy);

    int i;
    for (i = 0; i < 4; i++)
    {
        wxSashEdge& edge = m_sashes[i];
        wxSashEdgePosition position = (wxSashEdgePosition) i ;

        if (edge.m_show)
        {
            switch (position)
            {
                case wxSASH_TOP:
                {
                    if (y >= 0 && y <= GetEdgeMargin(position))
                        return wxSASH_TOP;
                    break;
                }
                case wxSASH_RIGHT:
                {
                    if ((x >= cx - GetEdgeMargin(position)) && (x <= cx))
                        return wxSASH_RIGHT;
                    break;
                }
                case wxSASH_BOTTOM:
                {
                    if ((y >= cy - GetEdgeMargin(position)) && (y <= cy))
                        return wxSASH_BOTTOM;
                    break;
                }
                case wxSASH_LEFT:
                {
                    if ((x <= GetEdgeMargin(position)) && (x >= 0))
                        return wxSASH_LEFT;
                    break;
                }
                case wxSASH_NONE:
                {
                    break;
                }
            }
        }
    }
    return wxSASH_NONE;
}

// Draw 3D effect borders
void wxSashWindow::DrawBorders(wxDC& dc)
{
    int w, h;
    GetClientSize(&w, &h);

    wxPen mediumShadowPen(m_mediumShadowColour, 1, wxSOLID);
    wxPen darkShadowPen(m_darkShadowColour, 1, wxSOLID);
    wxPen lightShadowPen(m_lightShadowColour, 1, wxSOLID);
    wxPen hilightPen(m_hilightColour, 1, wxSOLID);

    if ( GetWindowStyleFlag() & wxSW_3DBORDER )
    {
        dc.SetPen(mediumShadowPen);
        dc.DrawLine(0, 0, w-1, 0);
        dc.DrawLine(0, 0, 0, h - 1);

        dc.SetPen(darkShadowPen);
        dc.DrawLine(1, 1, w-2, 1);
        dc.DrawLine(1, 1, 1, h-2);

        dc.SetPen(hilightPen);
        dc.DrawLine(0, h-1, w-1, h-1);
        dc.DrawLine(w-1, 0, w-1, h); // Surely the maximum y pos. should be h - 1.
                                     /// Anyway, h is required for MSW.

        dc.SetPen(lightShadowPen);
        dc.DrawLine(w-2, 1, w-2, h-2); // Right hand side
        dc.DrawLine(1, h-2, w-1, h-2);     // Bottom
    }
    else if ( GetWindowStyleFlag() & wxSW_BORDER )
    {
        dc.SetBrush(*wxTRANSPARENT_BRUSH);
        dc.SetPen(*wxBLACK_PEN);
        dc.DrawRectangle(0, 0, w-1, h-1);
    }

    dc.SetPen(wxNullPen);
    dc.SetBrush(wxNullBrush);
}

void wxSashWindow::DrawSashes(wxDC& dc)
{
    int i;
    for (i = 0; i < 4; i++)
        if (m_sashes[i].m_show)
            DrawSash((wxSashEdgePosition) i, dc);
}

// Draw the sash
void wxSashWindow::DrawSash(wxSashEdgePosition edge, wxDC& dc)
{
    int w, h;
    GetClientSize(&w, &h);

    wxPen facePen(m_faceColour, 1, wxSOLID);
    wxBrush faceBrush(m_faceColour, wxSOLID);
    wxPen mediumShadowPen(m_mediumShadowColour, 1, wxSOLID);
    wxPen darkShadowPen(m_darkShadowColour, 1, wxSOLID);
    wxPen lightShadowPen(m_lightShadowColour, 1, wxSOLID);
    wxPen hilightPen(m_hilightColour, 1, wxSOLID);
    wxPen blackPen(wxColour(0, 0, 0), 1, wxSOLID);
    wxPen whitePen(wxColour(255, 255, 255), 1, wxSOLID);

    if ( edge == wxSASH_LEFT || edge == wxSASH_RIGHT )
    {
        int sashPosition = 0;
        if (edge == wxSASH_LEFT)
            sashPosition = 0;
        else
            sashPosition = w - GetEdgeMargin(edge);

        dc.SetPen(facePen);
        dc.SetBrush(faceBrush);
        dc.DrawRectangle(sashPosition, 0, GetEdgeMargin(edge), h);

        if (GetWindowStyleFlag() & wxSW_3DSASH)
        {
            if (edge == wxSASH_LEFT)
            {
                // Draw a dark grey line on the left to indicate that the
                // sash is raised
                dc.SetPen(mediumShadowPen);
                dc.DrawLine(GetEdgeMargin(edge), 0, GetEdgeMargin(edge), h);
            }
            else
            {
                // Draw a highlight line on the right to indicate that the
                // sash is raised
                dc.SetPen(hilightPen);
                dc.DrawLine(w - GetEdgeMargin(edge), 0, w - GetEdgeMargin(edge), h);
            }
        }
    }
    else // top or bottom
    {
        int sashPosition = 0;
        if (edge == wxSASH_TOP)
            sashPosition = 0;
        else
            sashPosition = h - GetEdgeMargin(edge);

        dc.SetPen(facePen);
        dc.SetBrush(faceBrush);
        dc.DrawRectangle(0, sashPosition, w, GetEdgeMargin(edge));

        if (GetWindowStyleFlag() & wxSW_3DSASH)
        {
            if (edge == wxSASH_BOTTOM)
            {
                // Draw a highlight line on the bottom to indicate that the
                // sash is raised
                dc.SetPen(hilightPen);
                dc.DrawLine(0, h - GetEdgeMargin(edge), w, h - GetEdgeMargin(edge));
            }
            else
            {
                // Draw a drak grey line on the top to indicate that the
                // sash is raised
                dc.SetPen(mediumShadowPen);
                dc.DrawLine(1, GetEdgeMargin(edge), w-1, GetEdgeMargin(edge));
            }
        }
    }

    dc.SetPen(wxNullPen);
    dc.SetBrush(wxNullBrush);
}

// Draw the sash tracker (for whilst moving the sash)
void wxSashWindow::DrawSashTracker(wxSashEdgePosition edge, int x, int y)
{
    int w, h;
    GetClientSize(&w, &h);

    wxScreenDC screenDC;
    int x1, y1;
    int x2, y2;

    if ( edge == wxSASH_LEFT || edge == wxSASH_RIGHT )
    {
        x1 = x; y1 = 2;
        x2 = x; y2 = h-2;

        if ( (edge == wxSASH_LEFT) && (x1 > w) )
        {
            x1 = w; x2 = w;
        }
        else if ( (edge == wxSASH_RIGHT) && (x1 < 0) )
        {
            x1 = 0; x2 = 0;
        }
    }
    else
    {
        x1 = 2; y1 = y;
        x2 = w-2; y2 = y;

        if ( (edge == wxSASH_TOP) && (y1 > h) )
        {
            y1 = h;
            y2 = h;
        }
        else if ( (edge == wxSASH_BOTTOM) && (y1 < 0) )
        {
            y1 = 0;
            y2 = 0;
        }
    }

    ClientToScreen(&x1, &y1);
    ClientToScreen(&x2, &y2);

    wxPen sashTrackerPen(*wxBLACK, 2, wxSOLID);

    screenDC.SetLogicalFunction(wxINVERT);
    screenDC.SetPen(sashTrackerPen);
    screenDC.SetBrush(*wxTRANSPARENT_BRUSH);

    screenDC.DrawLine(x1, y1, x2, y2);

    screenDC.SetLogicalFunction(wxCOPY);

    screenDC.SetPen(wxNullPen);
    screenDC.SetBrush(wxNullBrush);
}

// Position and size subwindows.
// Note that the border size applies to each subwindow, not
// including the edges next to the sash.
void wxSashWindow::SizeWindows()
{
    int cw, ch;
    GetClientSize(&cw, &ch);

    if (GetChildren().Number() == 1)
    {
        wxWindow* child = (wxWindow*) (GetChildren().First()->Data());

        int x = 0;
        int y = 0;
        int width = cw;
        int height = ch;

        // Top
        if (m_sashes[0].m_show)
        {
            y = m_borderSize;
            height -= m_borderSize;
        }
        y += m_extraBorderSize;

        // Left
        if (m_sashes[3].m_show)
        {
            x = m_borderSize;
            width -= m_borderSize;
        }
        x += m_extraBorderSize;

        // Right
        if (m_sashes[1].m_show)
        {
            width -= m_borderSize;
        }
        width -= 2*m_extraBorderSize;

        // Bottom
        if (m_sashes[2].m_show)
        {
            height -= m_borderSize;
        }
        height -= 2*m_extraBorderSize;

        child->SetSize(x, y, width, height);
    }
    else if (GetChildren().Number() > 1)
    {
        // Perhaps multiple children are themselves sash windows.
        // TODO: this doesn't really work because the subwindows sizes/positions
        // must be set to leave a gap for the parent's sash (hit-test and decorations).
        // Perhaps we can allow for this within LayoutWindow, testing whether the parent
        // is a sash window, and if so, allowing some space for the edges.
        wxLayoutAlgorithm layout;
        layout.LayoutWindow(this);
    }

    wxClientDC dc(this);
    DrawBorders(dc);
    DrawSashes(dc);
}

// Initialize colours
void wxSashWindow::InitColours()
{
    // Shadow colours
#ifndef __WIN16__
    m_faceColour = wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE);
    m_mediumShadowColour = wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DSHADOW);
    m_darkShadowColour = wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DDKSHADOW);
    m_lightShadowColour = wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DLIGHT);
    m_hilightColour = wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DHILIGHT);
#else
    m_faceColour = *(wxTheColourDatabase->FindColour("LIGHT GREY"));
    m_mediumShadowColour = *(wxTheColourDatabase->FindColour("GREY"));
    m_darkShadowColour = *(wxTheColourDatabase->FindColour("BLACK"));
    m_lightShadowColour = *(wxTheColourDatabase->FindColour("LIGHT GREY"));
    m_hilightColour = *(wxTheColourDatabase->FindColour("WHITE"));
#endif
}

void wxSashWindow::SetSashVisible(wxSashEdgePosition edge, bool sash)
{
     m_sashes[edge].m_show = sash;
     if (sash)
        m_sashes[edge].m_margin = m_borderSize;
     else
        m_sashes[edge].m_margin = 0;
}

#endif // wxUSE_SASH
Commit	Line	Data
	1	/////////////////////////////////////////////////////////////////////////////
	2	// Name: sashwin.cpp
	3	// Purpose: wxSashWindow implementation. A sash window has an optional
	4	// sash on each edge, allowing it to be dragged. An event
	5	// is generated when the sash is released.
	6	// Author: Julian Smart
	7	// Modified by:
	8	// Created: 01/02/97
	9	// RCS-ID: $Id$
	10	// Copyright: (c) Julian Smart
	11	// Licence: wxWindows license
	12	/////////////////////////////////////////////////////////////////////////////
	13
	14	#ifdef __GNUG__
	15	#pragma implementation "sashwin.h"
	16	#endif
	17
	18	// For compilers that support precompilation, includes "wx.h".
	19	#include "wx/wxprec.h"
	20
	21	#ifdef __BORLANDC__
	22	#pragma hdrstop
	23	#endif
	24
	25	#if wxUSE_SASH
	26
	27	#ifndef WX_PRECOMP
	28	#include "wx/wx.h"
	29	#endif
	30
	31	#include <math.h>
	32	#include <stdlib.h>
	33
	34	#include "wx/string.h"
	35	#include "wx/dcscreen.h"
	36	#include "wx/sashwin.h"
	37	#include "wx/laywin.h"
	38
	39	DEFINE_EVENT_TYPE(wxEVT_SASH_DRAGGED)
	40
	41	IMPLEMENT_DYNAMIC_CLASS(wxSashWindow, wxWindow)
	42	IMPLEMENT_DYNAMIC_CLASS(wxSashEvent, wxCommandEvent)
	43
	44	BEGIN_EVENT_TABLE(wxSashWindow, wxWindow)
	45	EVT_PAINT(wxSashWindow::OnPaint)
	46	EVT_SIZE(wxSashWindow::OnSize)
	47	EVT_MOUSE_EVENTS(wxSashWindow::OnMouseEvent)
	48	END_EVENT_TABLE()
	49
	50	bool wxSashWindow::Create(wxWindow *parent, wxWindowID id, const wxPoint& pos,
	51	const wxSize& size, long style, const wxString& name)
	52	{
	53	return wxWindow::Create(parent, id, pos, size, style, name);
	54	}
	55
	56	wxSashWindow::~wxSashWindow()
	57	{
	58	delete m_sashCursorWE;
	59	delete m_sashCursorNS;
	60	}
	61
	62	void wxSashWindow::Init()
	63	{
	64	m_draggingEdge = wxSASH_NONE;
	65	m_dragMode = wxSASH_DRAG_NONE;
	66	m_oldX = 0;
	67	m_oldY = 0;
	68	m_firstX = 0;
	69	m_firstY = 0;
	70	m_borderSize = 3;
	71	m_extraBorderSize = 0;
	72	m_minimumPaneSizeX = 0;
	73	m_minimumPaneSizeY = 0;
	74	m_maximumPaneSizeX = 10000;
	75	m_maximumPaneSizeY = 10000;
	76	m_sashCursorWE = new wxCursor(wxCURSOR_SIZEWE);
	77	m_sashCursorNS = new wxCursor(wxCURSOR_SIZENS);
	78	m_mouseCaptured = FALSE;
	79
	80	// Eventually, we'll respond to colour change messages
	81	InitColours();
	82	}
	83
	84	void wxSashWindow::OnPaint(wxPaintEvent& WXUNUSED(event))
	85	{
	86	wxPaintDC dc(this);
	87
	88	// if ( m_borderSize > 0 )
	89	DrawBorders(dc);
	90
	91	DrawSashes(dc);
	92	}
	93
	94	void wxSashWindow::OnMouseEvent(wxMouseEvent& event)
	95	{
	96	wxCoord x, y;
	97	event.GetPosition(&x, &y);
	98
	99	wxSashEdgePosition sashHit = SashHitTest(x, y);
	100
	101	// reset the cursor
	102	#if defined(__WXMOTIF__) \|\| defined(__WXGTK__)
	103	// Not necessary and in fact inhibits proper cursor setting (JACS 8/2000)
	104	//SetCursor(* wxSTANDARD_CURSOR);
	105	#endif
	106	#ifdef __WXMSW__
	107	SetCursor(wxNullCursor);
	108	#endif
	109
	110	if (event.LeftDown())
	111	{
	112	CaptureMouse();
	113	m_mouseCaptured = TRUE;
	114
	115	if ( sashHit != wxSASH_NONE )
	116	{
	117	// Required for X to specify that
	118	// that we wish to draw on top of all windows
	119	// - and we optimise by specifying the area
	120	// for creating the overlap window.
	121	// Find the first frame or dialog and use this to specify
	122	// the area to draw on.
	123	wxWindow* parent = this;
	124
	125	while (parent && !parent->IsKindOf(CLASSINFO(wxDialog)) &&
	126	!parent->IsKindOf(CLASSINFO(wxFrame)))
	127	parent = parent->GetParent();
	128
	129	wxScreenDC::StartDrawingOnTop(parent);
	130
	131	// We don't say we're dragging yet; we leave that
	132	// decision for the Dragging() branch, to ensure
	133	// the user has dragged a little bit.
	134	m_dragMode = wxSASH_DRAG_LEFT_DOWN;
	135	m_draggingEdge = sashHit;
	136	m_firstX = x;
	137	m_firstY = y;
	138
	139	if ( (sashHit == wxSASH_LEFT) \|\| (sashHit == wxSASH_RIGHT) )
	140	{
	141	SetCursor(*m_sashCursorWE);
	142	}
	143	else
	144	{
	145	SetCursor(*m_sashCursorNS);
	146	}
	147	}
	148	}
	149	else if ( event.LeftUp() && m_dragMode == wxSASH_DRAG_LEFT_DOWN )
	150	{
	151	// Wasn't a proper drag
	152	if (m_mouseCaptured)
	153	ReleaseMouse();
	154	m_mouseCaptured = FALSE;
	155
	156	wxScreenDC::EndDrawingOnTop();
	157	m_dragMode = wxSASH_DRAG_NONE;
	158	m_draggingEdge = wxSASH_NONE;
	159	}
	160	else if (event.LeftUp() && m_dragMode == wxSASH_DRAG_DRAGGING)
	161	{
	162	// We can stop dragging now and see what we've got.
	163	m_dragMode = wxSASH_DRAG_NONE;
	164	if (m_mouseCaptured)
	165	ReleaseMouse();
	166	m_mouseCaptured = FALSE;
	167
	168	// Erase old tracker
	169	DrawSashTracker(m_draggingEdge, m_oldX, m_oldY);
	170
	171	// End drawing on top (frees the window used for drawing
	172	// over the screen)
	173	wxScreenDC::EndDrawingOnTop();
	174
	175	int w, h;
	176	GetSize(&w, &h);
	177	int xp, yp;
	178	GetPosition(&xp, &yp);
	179
	180	wxSashEdgePosition edge = m_draggingEdge;
	181	m_draggingEdge = wxSASH_NONE;
	182
	183	wxRect dragRect;
	184	wxSashDragStatus status = wxSASH_STATUS_OK;
	185
	186	// the new height and width of the window - if -1, it didn't change
	187	int newHeight = -1,
	188	newWidth = -1;
	189
	190	// NB: x and y may be negative and they're relative to the sash window
	191	// upper left corner, while xp and yp are expressed in the parent
	192	// window system of coordinates, so adjust them! After this
	193	// adjustment, all coordinates are relative to the parent window.
	194	y += yp;
	195	x += xp;
	196
	197	switch (edge)
	198	{
	199	case wxSASH_TOP:
	200	if ( y > yp + h )
	201	{
	202	// top sash shouldn't get below the bottom one
	203	status = wxSASH_STATUS_OUT_OF_RANGE;
	204	}
	205	else
	206	{
	207	newHeight = h - (y - yp);
	208	}
	209	break;
	210
	211	case wxSASH_BOTTOM:
	212	if ( y < yp )
	213	{
	214	// bottom sash shouldn't get above the top one
	215	status = wxSASH_STATUS_OUT_OF_RANGE;
	216	}
	217	else
	218	{
	219	newHeight = y - yp;
	220	}
	221	break;
	222
	223	case wxSASH_LEFT:
	224	if ( x > xp + w )
	225	{
	226	// left sash shouldn't get beyond the right one
	227	status = wxSASH_STATUS_OUT_OF_RANGE;
	228	}
	229	else
	230	{
	231	newWidth = w - (x - xp);
	232	}
	233	break;
	234
	235	case wxSASH_RIGHT:
	236	if ( x < xp )
	237	{
	238	// and the right sash, finally, shouldn't be beyond the
	239	// left one
	240	status = wxSASH_STATUS_OUT_OF_RANGE;
	241	}
	242	else
	243	{
	244	newWidth = x - xp;
	245	}
	246	break;
	247
	248	case wxSASH_NONE:
	249	// can this happen at all?
	250	break;
	251	}
	252
	253	if ( newHeight == -1 )
	254	{
	255	// didn't change
	256	newHeight = h;
	257	}
	258	else
	259	{
	260	// make sure it's in m_minimumPaneSizeY..m_maximumPaneSizeY range
	261	newHeight = wxMax(newHeight, m_minimumPaneSizeY);
	262	newHeight = wxMin(newHeight, m_maximumPaneSizeY);
	263	}
	264
	265	if ( newWidth == -1 )
	266	{
	267	// didn't change
	268	newWidth = w;
	269	}
	270	else
	271	{
	272	// make sure it's in m_minimumPaneSizeY..m_maximumPaneSizeY range
	273	newWidth = wxMax(newWidth, m_minimumPaneSizeX);
	274	newWidth = wxMin(newWidth, m_maximumPaneSizeX);
	275	}
	276
	277	dragRect = wxRect(x, y, newWidth, newHeight);
	278
	279	wxSashEvent event(GetId(), edge);
	280	event.SetEventObject(this);
	281	event.SetDragStatus(status);
	282	event.SetDragRect(dragRect);
	283	GetEventHandler()->ProcessEvent(event);
	284	}
	285	else if ( event.LeftUp() )
	286	{
	287	if (m_mouseCaptured)
	288	ReleaseMouse();
	289	m_mouseCaptured = FALSE;
	290	}
	291	else if (event.Moving() && !event.Dragging())
	292	{
	293	// Just change the cursor if required
	294	if ( sashHit != wxSASH_NONE )
	295	{
	296	if ( (sashHit == wxSASH_LEFT) \|\| (sashHit == wxSASH_RIGHT) )
	297	{
	298	SetCursor(*m_sashCursorWE);
	299	}
	300	else
	301	{
	302	SetCursor(*m_sashCursorNS);
	303	}
	304	}
	305	else
	306	{
	307	SetCursor(wxNullCursor);
	308	}
	309	}
	310	else if ( event.Dragging() &&
	311	((m_dragMode == wxSASH_DRAG_DRAGGING) \|\|
	312	(m_dragMode == wxSASH_DRAG_LEFT_DOWN)) )
	313	{
	314	if ( (m_draggingEdge == wxSASH_LEFT) \|\| (m_draggingEdge == wxSASH_RIGHT) )
	315	{
	316	SetCursor(*m_sashCursorWE);
	317	}
	318	else
	319	{
	320	SetCursor(*m_sashCursorNS);
	321	}
	322
	323	if (m_dragMode == wxSASH_DRAG_LEFT_DOWN)
	324	{
	325	m_dragMode = wxSASH_DRAG_DRAGGING;
	326	DrawSashTracker(m_draggingEdge, x, y);
	327	}
	328	else
	329	{
	330	if ( m_dragMode == wxSASH_DRAG_DRAGGING )
	331	{
	332	// Erase old tracker
	333	DrawSashTracker(m_draggingEdge, m_oldX, m_oldY);
	334
	335	// Draw new one
	336	DrawSashTracker(m_draggingEdge, x, y);
	337	}
	338	}
	339	m_oldX = x;
	340	m_oldY = y;
	341	}
	342	else if ( event.LeftDClick() )
	343	{
	344	// Nothing
	345	}
	346	else
	347	{
	348	}
	349	}
	350
	351	void wxSashWindow::OnSize(wxSizeEvent& WXUNUSED(event))
	352	{
	353	SizeWindows();
	354	}
	355
	356	wxSashEdgePosition wxSashWindow::SashHitTest(int x, int y, int WXUNUSED(tolerance))
	357	{
	358	int cx, cy;
	359	GetClientSize(& cx, & cy);
	360
	361	int i;
	362	for (i = 0; i < 4; i++)
	363	{
	364	wxSashEdge& edge = m_sashes[i];
	365	wxSashEdgePosition position = (wxSashEdgePosition) i ;
	366
	367	if (edge.m_show)
	368	{
	369	switch (position)
	370	{
	371	case wxSASH_TOP:
	372	{
	373	if (y >= 0 && y <= GetEdgeMargin(position))
	374	return wxSASH_TOP;
	375	break;
	376	}
	377	case wxSASH_RIGHT:
	378	{
	379	if ((x >= cx - GetEdgeMargin(position)) && (x <= cx))
	380	return wxSASH_RIGHT;
	381	break;
	382	}
	383	case wxSASH_BOTTOM:
	384	{
	385	if ((y >= cy - GetEdgeMargin(position)) && (y <= cy))
	386	return wxSASH_BOTTOM;
	387	break;
	388	}
	389	case wxSASH_LEFT:
	390	{
	391	if ((x <= GetEdgeMargin(position)) && (x >= 0))
	392	return wxSASH_LEFT;
	393	break;
	394	}
	395	case wxSASH_NONE:
	396	{
	397	break;
	398	}
	399	}
	400	}
	401	}
	402	return wxSASH_NONE;
	403	}
	404
	405	// Draw 3D effect borders
	406	void wxSashWindow::DrawBorders(wxDC& dc)
	407	{
	408	int w, h;
	409	GetClientSize(&w, &h);
	410
	411	wxPen mediumShadowPen(m_mediumShadowColour, 1, wxSOLID);
	412	wxPen darkShadowPen(m_darkShadowColour, 1, wxSOLID);
	413	wxPen lightShadowPen(m_lightShadowColour, 1, wxSOLID);
	414	wxPen hilightPen(m_hilightColour, 1, wxSOLID);
	415
	416	if ( GetWindowStyleFlag() & wxSW_3DBORDER )
	417	{
	418	dc.SetPen(mediumShadowPen);
	419	dc.DrawLine(0, 0, w-1, 0);
	420	dc.DrawLine(0, 0, 0, h - 1);
	421
	422	dc.SetPen(darkShadowPen);
	423	dc.DrawLine(1, 1, w-2, 1);
	424	dc.DrawLine(1, 1, 1, h-2);
	425
	426	dc.SetPen(hilightPen);
	427	dc.DrawLine(0, h-1, w-1, h-1);
	428	dc.DrawLine(w-1, 0, w-1, h); // Surely the maximum y pos. should be h - 1.
	429	/// Anyway, h is required for MSW.
	430
	431	dc.SetPen(lightShadowPen);
	432	dc.DrawLine(w-2, 1, w-2, h-2); // Right hand side
	433	dc.DrawLine(1, h-2, w-1, h-2); // Bottom
	434	}
	435	else if ( GetWindowStyleFlag() & wxSW_BORDER )
	436	{
	437	dc.SetBrush(*wxTRANSPARENT_BRUSH);
	438	dc.SetPen(*wxBLACK_PEN);
	439	dc.DrawRectangle(0, 0, w-1, h-1);
	440	}
	441
	442	dc.SetPen(wxNullPen);
	443	dc.SetBrush(wxNullBrush);
	444	}
	445
	446	void wxSashWindow::DrawSashes(wxDC& dc)
	447	{
	448	int i;
	449	for (i = 0; i < 4; i++)
	450	if (m_sashes[i].m_show)
	451	DrawSash((wxSashEdgePosition) i, dc);
	452	}
	453
	454	// Draw the sash
	455	void wxSashWindow::DrawSash(wxSashEdgePosition edge, wxDC& dc)
	456	{
	457	int w, h;
	458	GetClientSize(&w, &h);
	459
	460	wxPen facePen(m_faceColour, 1, wxSOLID);
	461	wxBrush faceBrush(m_faceColour, wxSOLID);
	462	wxPen mediumShadowPen(m_mediumShadowColour, 1, wxSOLID);
	463	wxPen darkShadowPen(m_darkShadowColour, 1, wxSOLID);
	464	wxPen lightShadowPen(m_lightShadowColour, 1, wxSOLID);
	465	wxPen hilightPen(m_hilightColour, 1, wxSOLID);
	466	wxPen blackPen(wxColour(0, 0, 0), 1, wxSOLID);
	467	wxPen whitePen(wxColour(255, 255, 255), 1, wxSOLID);
	468
	469	if ( edge == wxSASH_LEFT \|\| edge == wxSASH_RIGHT )
	470	{
	471	int sashPosition = 0;
	472	if (edge == wxSASH_LEFT)
	473	sashPosition = 0;
	474	else
	475	sashPosition = w - GetEdgeMargin(edge);
	476
	477	dc.SetPen(facePen);
	478	dc.SetBrush(faceBrush);
	479	dc.DrawRectangle(sashPosition, 0, GetEdgeMargin(edge), h);
	480
	481	if (GetWindowStyleFlag() & wxSW_3DSASH)
	482	{
	483	if (edge == wxSASH_LEFT)
	484	{
	485	// Draw a dark grey line on the left to indicate that the
	486	// sash is raised
	487	dc.SetPen(mediumShadowPen);
	488	dc.DrawLine(GetEdgeMargin(edge), 0, GetEdgeMargin(edge), h);
	489	}
	490	else
	491	{
	492	// Draw a highlight line on the right to indicate that the
	493	// sash is raised
	494	dc.SetPen(hilightPen);
	495	dc.DrawLine(w - GetEdgeMargin(edge), 0, w - GetEdgeMargin(edge), h);
	496	}
	497	}
	498	}
	499	else // top or bottom
	500	{
	501	int sashPosition = 0;
	502	if (edge == wxSASH_TOP)
	503	sashPosition = 0;
	504	else
	505	sashPosition = h - GetEdgeMargin(edge);
	506
	507	dc.SetPen(facePen);
	508	dc.SetBrush(faceBrush);
	509	dc.DrawRectangle(0, sashPosition, w, GetEdgeMargin(edge));
	510
	511	if (GetWindowStyleFlag() & wxSW_3DSASH)
	512	{
	513	if (edge == wxSASH_BOTTOM)
	514	{
	515	// Draw a highlight line on the bottom to indicate that the
	516	// sash is raised
	517	dc.SetPen(hilightPen);
	518	dc.DrawLine(0, h - GetEdgeMargin(edge), w, h - GetEdgeMargin(edge));
	519	}
	520	else
	521	{
	522	// Draw a drak grey line on the top to indicate that the
	523	// sash is raised
	524	dc.SetPen(mediumShadowPen);
	525	dc.DrawLine(1, GetEdgeMargin(edge), w-1, GetEdgeMargin(edge));
	526	}
	527	}
	528	}
	529
	530	dc.SetPen(wxNullPen);
	531	dc.SetBrush(wxNullBrush);
	532	}
	533
	534	// Draw the sash tracker (for whilst moving the sash)
	535	void wxSashWindow::DrawSashTracker(wxSashEdgePosition edge, int x, int y)
	536	{
	537	int w, h;
	538	GetClientSize(&w, &h);
	539
	540	wxScreenDC screenDC;
	541	int x1, y1;
	542	int x2, y2;
	543
	544	if ( edge == wxSASH_LEFT \|\| edge == wxSASH_RIGHT )
	545	{
	546	x1 = x; y1 = 2;
	547	x2 = x; y2 = h-2;
	548
	549	if ( (edge == wxSASH_LEFT) && (x1 > w) )
	550	{
	551	x1 = w; x2 = w;
	552	}
	553	else if ( (edge == wxSASH_RIGHT) && (x1 < 0) )
	554	{
	555	x1 = 0; x2 = 0;
	556	}
	557	}
	558	else
	559	{
	560	x1 = 2; y1 = y;
	561	x2 = w-2; y2 = y;
	562
	563	if ( (edge == wxSASH_TOP) && (y1 > h) )
	564	{
	565	y1 = h;
	566	y2 = h;
	567	}
	568	else if ( (edge == wxSASH_BOTTOM) && (y1 < 0) )
	569	{
	570	y1 = 0;
	571	y2 = 0;
	572	}
	573	}
	574
	575	ClientToScreen(&x1, &y1);
	576	ClientToScreen(&x2, &y2);
	577
	578	wxPen sashTrackerPen(*wxBLACK, 2, wxSOLID);
	579
	580	screenDC.SetLogicalFunction(wxINVERT);
	581	screenDC.SetPen(sashTrackerPen);
	582	screenDC.SetBrush(*wxTRANSPARENT_BRUSH);
	583
	584	screenDC.DrawLine(x1, y1, x2, y2);
	585
	586	screenDC.SetLogicalFunction(wxCOPY);
	587
	588	screenDC.SetPen(wxNullPen);
	589	screenDC.SetBrush(wxNullBrush);
	590	}
	591
	592	// Position and size subwindows.
	593	// Note that the border size applies to each subwindow, not
	594	// including the edges next to the sash.
	595	void wxSashWindow::SizeWindows()
	596	{
	597	int cw, ch;
	598	GetClientSize(&cw, &ch);
	599
	600	if (GetChildren().Number() == 1)
	601	{
	602	wxWindow* child = (wxWindow*) (GetChildren().First()->Data());
	603
	604	int x = 0;
	605	int y = 0;
	606	int width = cw;
	607	int height = ch;
	608
	609	// Top
	610	if (m_sashes[0].m_show)
	611	{
	612	y = m_borderSize;
	613	height -= m_borderSize;
	614	}
	615	y += m_extraBorderSize;
	616
	617	// Left
	618	if (m_sashes[3].m_show)
	619	{
	620	x = m_borderSize;
	621	width -= m_borderSize;
	622	}
	623	x += m_extraBorderSize;
	624
	625	// Right
	626	if (m_sashes[1].m_show)
	627	{
	628	width -= m_borderSize;
	629	}
	630	width -= 2*m_extraBorderSize;
	631
	632	// Bottom
	633	if (m_sashes[2].m_show)
	634	{
	635	height -= m_borderSize;
	636	}
	637	height -= 2*m_extraBorderSize;
	638
	639	child->SetSize(x, y, width, height);
	640	}
	641	else if (GetChildren().Number() > 1)
	642	{
	643	// Perhaps multiple children are themselves sash windows.
	644	// TODO: this doesn't really work because the subwindows sizes/positions
	645	// must be set to leave a gap for the parent's sash (hit-test and decorations).
	646	// Perhaps we can allow for this within LayoutWindow, testing whether the parent
	647	// is a sash window, and if so, allowing some space for the edges.
	648	wxLayoutAlgorithm layout;
	649	layout.LayoutWindow(this);
	650	}
	651
	652	wxClientDC dc(this);
	653	DrawBorders(dc);
	654	DrawSashes(dc);
	655	}
	656
	657	// Initialize colours
	658	void wxSashWindow::InitColours()
	659	{
	660	// Shadow colours
	661	#ifndef __WIN16__
	662	m_faceColour = wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE);
	663	m_mediumShadowColour = wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DSHADOW);
	664	m_darkShadowColour = wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DDKSHADOW);
	665	m_lightShadowColour = wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DLIGHT);
	666	m_hilightColour = wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DHILIGHT);
	667	#else
	668	m_faceColour = *(wxTheColourDatabase->FindColour("LIGHT GREY"));
	669	m_mediumShadowColour = *(wxTheColourDatabase->FindColour("GREY"));
	670	m_darkShadowColour = *(wxTheColourDatabase->FindColour("BLACK"));
	671	m_lightShadowColour = *(wxTheColourDatabase->FindColour("LIGHT GREY"));
	672	m_hilightColour = *(wxTheColourDatabase->FindColour("WHITE"));
	673	#endif
	674	}
	675
	676	void wxSashWindow::SetSashVisible(wxSashEdgePosition edge, bool sash)
	677	{
	678	m_sashes[edge].m_show = sash;
	679	if (sash)
	680	m_sashes[edge].m_margin = m_borderSize;
	681	else
	682	m_sashes[edge].m_margin = 0;
	683	}
	684
	685	#endif // wxUSE_SASH