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5a242608b5c8b4f82ea9a93e1ce4630d58f7f27f
wxWidgets/src/generic/splitter.cpp
Julian Smart 5a242608b5 Reverted previous patch 
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_4_BRANCH@19988 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
2003-04-05 13:11:25 +00:00

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/////////////////////////////////////////////////////////////////////////////
// Name: src/generic/splitter.cpp
// Purpose: wxSplitterWindow implementation
// Author: Julian Smart
// Modified by:
// Created: 01/02/97
// RCS-ID: $Id$
// Copyright: (c) Julian Smart and Markus Holzem
// Licence: wxWindows license
/////////////////////////////////////////////////////////////////////////////
#ifdef __GNUG__
#pragma implementation "splitter.h"
#endif
// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"
#ifdef __BORLANDC__
#pragma hdrstop
#endif
#ifndef WX_PRECOMP
#include "wx/string.h"
#include "wx/utils.h"
#include "wx/log.h"
#include "wx/dcscreen.h"
#include "wx/window.h"
#include "wx/dialog.h"
#include "wx/frame.h"
#include "wx/settings.h"
#endif
#include "wx/splitter.h"
#include <stdlib.h>
DEFINE_EVENT_TYPE(wxEVT_COMMAND_SPLITTER_SASH_POS_CHANGED)
DEFINE_EVENT_TYPE(wxEVT_COMMAND_SPLITTER_SASH_POS_CHANGING)
DEFINE_EVENT_TYPE(wxEVT_COMMAND_SPLITTER_DOUBLECLICKED)
DEFINE_EVENT_TYPE(wxEVT_COMMAND_SPLITTER_UNSPLIT)
IMPLEMENT_DYNAMIC_CLASS(wxSplitterWindow, wxWindow)
IMPLEMENT_DYNAMIC_CLASS(wxSplitterEvent, wxNotifyEvent)
BEGIN_EVENT_TABLE(wxSplitterWindow, wxWindow)
EVT_PAINT(wxSplitterWindow::OnPaint)
EVT_SIZE(wxSplitterWindow::OnSize)
EVT_IDLE(wxSplitterWindow::OnIdle)
EVT_MOUSE_EVENTS(wxSplitterWindow::OnMouseEvent)
#ifdef __WXMSW__
EVT_SET_CURSOR(wxSplitterWindow::OnSetCursor)
#endif // wxMSW
WX_EVENT_TABLE_CONTROL_CONTAINER(wxSplitterWindow)
END_EVENT_TABLE()
WX_DELEGATE_TO_CONTROL_CONTAINER(wxSplitterWindow);
bool wxSplitterWindow::Create(wxWindow *parent, wxWindowID id,
const wxPoint& pos,
const wxSize& size,
long style,
const wxString& name)
{
// allow TABbing from one window to the other
style |= wxTAB_TRAVERSAL;
if (!wxWindow::Create(parent, id, pos, size, style, name))
return FALSE;
m_permitUnsplitAlways = (style & wxSP_PERMIT_UNSPLIT) != 0;
if ( style & wxSP_3DSASH )
m_sashSize = 7;
else
m_sashSize = 3;
if ( style & wxSP_3DBORDER )
m_borderSize = 2;
else if ( style & wxSP_BORDER )
m_borderSize = 1;
else
m_borderSize = 0;
#ifdef __WXMAC__
int major,minor;
wxGetOsVersion( &major, &minor );
if (major >= 10)
m_windowStyle |= wxSP_SASH_AQUA;
#endif
return TRUE;
}
void wxSplitterWindow::Init()
{
m_container.SetContainerWindow(this);
m_splitMode = wxSPLIT_VERTICAL;
m_permitUnsplitAlways = TRUE;
m_windowOne = (wxWindow *) NULL;
m_windowTwo = (wxWindow *) NULL;
m_dragMode = wxSPLIT_DRAG_NONE;
m_oldX = 0;
m_oldY = 0;
m_firstX = 0;
m_firstY = 0;
m_sashSize = 3;
m_borderSize = 0;
m_sashPosition = m_requestedSashPosition = 0;
m_minimumPaneSize = 0;
m_sashCursorWE = wxCursor(wxCURSOR_SIZEWE);
m_sashCursorNS = wxCursor(wxCURSOR_SIZENS);
m_sashTrackerPen = new wxPen(*wxBLACK, 2, wxSOLID);
m_lightShadowPen = (wxPen *) NULL;
m_mediumShadowPen = (wxPen *) NULL;
m_darkShadowPen = (wxPen *) NULL;
m_faceBrush = (wxBrush *) NULL;
m_facePen = (wxPen *) NULL;
m_hilightPen = (wxPen *) NULL;
InitColours();
m_needUpdating = FALSE;
}
wxSplitterWindow::~wxSplitterWindow()
{
delete m_sashTrackerPen;
delete m_lightShadowPen;
delete m_darkShadowPen;
delete m_mediumShadowPen;
delete m_hilightPen;
delete m_facePen;
delete m_faceBrush;
}
void wxSplitterWindow::SetResizeCursor()
{
SetCursor(m_splitMode == wxSPLIT_VERTICAL ? m_sashCursorWE
: m_sashCursorNS);
}
void wxSplitterWindow::OnPaint(wxPaintEvent& WXUNUSED(event))
{
wxPaintDC dc(this);
if ( m_borderSize > 0 )
DrawBorders(dc);
DrawSash(dc);
}
void wxSplitterWindow::OnIdle(wxIdleEvent& event)
{
if (m_needUpdating)
SizeWindows();
event.Skip();
}
void wxSplitterWindow::OnMouseEvent(wxMouseEvent& event)
{
int x = (int)event.GetX(),
y = (int)event.GetY();
// reset the cursor
#if defined( __WXMOTIF__ ) || defined( __WXGTK__ ) || defined( __WXMAC__ )
SetCursor(* wxSTANDARD_CURSOR);
#elif defined(__WXMSW__)
SetCursor(wxCursor());
#endif
if (GetWindowStyle() & wxSP_NOSASH)
return;
// with wxSP_LIVE_UPDATE style the splitter windows are always resized
// following the mouse movement while it drags the sash, without it we only
// draw the sash at the new position but only resize the windows when the
// dragging is finished
bool isLive = (GetWindowStyleFlag() & wxSP_LIVE_UPDATE) != 0;
if (event.LeftDown())
{
if ( SashHitTest(x, y) )
{
CaptureMouse();
m_dragMode = wxSPLIT_DRAG_DRAGGING;
if ( !isLive )
{
// remember the initial sash position and draw the initial
// shadow sash
m_sashPositionCurrent = m_sashPosition;
DrawSashTracker(x, y);
}
m_oldX = x;
m_oldY = y;
SetResizeCursor();
return;
}
}
else if (event.LeftUp() && m_dragMode == wxSPLIT_DRAG_DRAGGING)
{
// We can stop dragging now and see what we've got.
m_dragMode = wxSPLIT_DRAG_NONE;
ReleaseMouse();
// exit if unsplit after doubleclick
if ( !IsSplit() )
{
return;
}
// Erase old tracker
if ( !isLive )
{
DrawSashTracker(m_oldX, m_oldY);
}
// the position of the click doesn't exactly correspond to
// m_sashPosition, rather it changes it by the distance by which the
// mouse has moved
int diff = m_splitMode == wxSPLIT_VERTICAL ? x - m_oldX : y - m_oldY;
int posSashOld = isLive ? m_sashPosition : m_sashPositionCurrent;
int posSashNew = OnSashPositionChanging(posSashOld + diff);
if ( posSashNew == -1 )
{
// change not allowed
return;
}
if ( m_permitUnsplitAlways || m_minimumPaneSize == 0 )
{
// Deal with possible unsplit scenarios
if ( posSashNew == 0 )
{
// We remove the first window from the view
wxWindow *removedWindow = m_windowOne;
m_windowOne = m_windowTwo;
m_windowTwo = (wxWindow *) NULL;
OnUnsplit(removedWindow);
SetSashPositionAndNotify(0);
}
else if ( posSashNew == GetWindowSize() )
{
// We remove the second window from the view
wxWindow *removedWindow = m_windowTwo;
m_windowTwo = (wxWindow *) NULL;
OnUnsplit(removedWindow);
SetSashPositionAndNotify(0);
}
else
{
SetSashPositionAndNotify(posSashNew);
}
}
else
{
SetSashPositionAndNotify(posSashNew);
}
SizeWindows();
} // left up && dragging
else if (event.Moving() && !event.Dragging())
{
// Just change the cursor if required
if ( SashHitTest(x, y) )
{
SetResizeCursor();
}
#if defined(__WXGTK__) || defined(__WXMSW__) || defined(__WXMAC__)
else
{
// We must set the normal cursor in MSW, because
// if the child window doesn't have a cursor, the
// parent's (splitter window) will be used, and this
// must be the standard cursor.
// where else do we unset the cursor?
SetCursor(* wxSTANDARD_CURSOR);
}
#endif // __WXGTK__
}
else if (event.Dragging() && (m_dragMode == wxSPLIT_DRAG_DRAGGING))
{
#if defined( __WXMSW__ ) || defined( __WXMAC__ )
// Otherwise, the cursor sometimes reverts to the normal cursor
// during dragging.
SetResizeCursor();
#endif // __WXMSW__
int diff = m_splitMode == wxSPLIT_VERTICAL ? x - m_oldX : y - m_oldY;
if ( !diff )
{
// nothing to do, mouse didn't really move far enough
return;
}
int posSashOld = isLive ? m_sashPosition : m_sashPositionCurrent;
int posSashNew = OnSashPositionChanging(posSashOld + diff);
if ( posSashNew == -1 )
{
// change not allowed
return;
}
if ( posSashNew == m_sashPosition )
return;
// Erase old tracker
if ( !isLive )
{
DrawSashTracker(m_oldX, m_oldY);
}
if (m_splitMode == wxSPLIT_VERTICAL)
x = posSashNew;
else
y = posSashNew;
// Remember old positions
m_oldX = x;
m_oldY = y;
#ifdef __WXMSW__
// As we captured the mouse, we may get the mouse events from outside
// our window - for example, negative values in x, y. This has a weird
// consequence under MSW where we use unsigned values sometimes and
// signed ones other times: the coordinates turn as big positive
// numbers and so the sash is drawn on the *right* side of the window
// instead of the left (or bottom instead of top). Correct this.
if ( (short)m_oldX < 0 )
m_oldX = 0;
if ( (short)m_oldY < 0 )
m_oldY = 0;
#endif // __WXMSW__
// Draw new one
if ( !isLive )
{
m_sashPositionCurrent = posSashNew;
DrawSashTracker(m_oldX, m_oldY);
}
else
{
SetSashPositionAndNotify(posSashNew);
m_needUpdating = TRUE;
}
}
else if ( event.LeftDClick() )
{
OnDoubleClickSash(x, y);
}
}
void wxSplitterWindow::OnSize(wxSizeEvent& event)
{
// only process this message if we're not iconized - otherwise iconizing
// and restoring a window containing the splitter has a funny side effect
// of changing the splitter position!
wxWindow *parent = GetParent();
while ( parent && !parent->IsTopLevel() )
{
parent = parent->GetParent();
}
bool iconized = FALSE;
// wxMotif doesn't yet have a wxTopLevelWindow implementation
#ifdef __WXMOTIF__
wxFrame *winTop = wxDynamicCast(parent, wxFrame);
#else
wxTopLevelWindow *winTop = wxDynamicCast(parent, wxTopLevelWindow);
#endif
if ( winTop )
{
iconized = winTop->IsIconized();
}
#ifndef __WXMOTIF__
else
{
wxFAIL_MSG(wxT("should have a top level parent!"));
iconized = FALSE;
}
#endif
if ( iconized )
{
event.Skip();
return;
}
int cw, ch;
GetClientSize( &cw, &ch );
if ( m_windowTwo )
{
if ( m_splitMode == wxSPLIT_VERTICAL )
{
if ( m_sashPosition >= (cw - 5) )
SetSashPositionAndNotify(wxMax(10, cw - 40));
}
else // m_splitMode == wxSPLIT_HORIZONTAL
{
if ( m_sashPosition >= (ch - 5) )
SetSashPositionAndNotify(wxMax(10, ch - 40));
}
}
SizeWindows();
}
bool wxSplitterWindow::SashHitTest(int x, int y, int tolerance)
{
if ( m_windowTwo == NULL || m_sashPosition == 0)
return FALSE; // No sash
if ( m_splitMode == wxSPLIT_VERTICAL )
{
if ( (x >= m_sashPosition - tolerance) && (x <= m_sashPosition + m_sashSize + tolerance) )
return TRUE;
else
return FALSE;
}
else
{
if ( (y >= (m_sashPosition- tolerance)) && (y <= (m_sashPosition + m_sashSize + tolerance)) )
return TRUE;
else
return FALSE;
}
}
// Draw 3D effect borders
void wxSplitterWindow::DrawBorders(wxDC& dc)
{
int w, h;
GetClientSize(&w, &h);
if ( GetWindowStyleFlag() & wxSP_3DBORDER )
{
dc.SetPen(*m_facePen);
dc.SetBrush(*m_faceBrush);
dc.DrawRectangle(1, 1 , w-1, m_borderSize-2 ); //high
dc.DrawRectangle(1, m_borderSize-2 , m_borderSize-2, h-1 ); // left
dc.DrawRectangle(w-m_borderSize+2, m_borderSize-2 , w-1, h-1 ); // right
dc.DrawRectangle(m_borderSize-2, h-m_borderSize+2 , w-m_borderSize+2, h-1 ); //bottom
dc.SetPen(*m_mediumShadowPen);
dc.DrawLine(m_borderSize-2, m_borderSize-2, w-m_borderSize+1, m_borderSize-2);
dc.DrawLine(m_borderSize-2, m_borderSize-2, m_borderSize-2, h-m_borderSize+1);
dc.SetPen(*m_darkShadowPen);
dc.DrawLine(m_borderSize-1, m_borderSize-1, w-m_borderSize, m_borderSize-1);
dc.DrawLine(m_borderSize-1, m_borderSize-1, m_borderSize-1, h-m_borderSize);
dc.SetPen(*m_hilightPen);
dc.DrawLine(m_borderSize - 2, h-m_borderSize+1, w-m_borderSize+1, h-m_borderSize+1);
dc.DrawLine(w-m_borderSize+1, m_borderSize - 2, w-m_borderSize+1, h-m_borderSize+2); // Surely the maximum y pos. should be h - 1.
/// Anyway, h is required for MSW.
dc.SetPen(*m_lightShadowPen);
dc.DrawLine(w-m_borderSize, m_borderSize-1, w-m_borderSize, h-m_borderSize); // Right hand side
dc.DrawLine(m_borderSize-1, h-m_borderSize, w-m_borderSize+1, h-m_borderSize); // Bottom
}
else if ( GetWindowStyleFlag() & wxSP_BORDER )
{
dc.SetBrush(*wxTRANSPARENT_BRUSH);
dc.SetPen(*wxBLACK_PEN);
dc.DrawRectangle(0, 0, w-1, h-1);
}
dc.SetPen(wxNullPen);
dc.SetBrush(wxNullBrush);
}
// Draw the sash
void wxSplitterWindow::DrawSash(wxDC& dc)
{
if ( m_sashPosition == 0 || !m_windowTwo)
return;
if (GetWindowStyle() & wxSP_NOSASH)
return;
int w, h;
GetClientSize(&w, &h);
if ( GetWindowStyleFlag() & wxSP_3DSASH )
{
if ( m_splitMode == wxSPLIT_VERTICAL )
{
dc.SetPen(*m_facePen);
if (HasFlag( wxSP_SASH_AQUA ))
dc.SetBrush(*wxWHITE_BRUSH);
else
dc.SetBrush(*m_faceBrush);
dc.DrawRectangle(m_sashPosition + 2, 0 , m_sashSize - 4, h );
dc.SetBrush(*wxTRANSPARENT_BRUSH);
dc.SetPen(*m_lightShadowPen);
int xShadow = m_borderSize ? m_borderSize - 1 : 0 ;
dc.DrawLine(m_sashPosition, xShadow , m_sashPosition, h-m_borderSize);
dc.SetPen(*m_hilightPen);
dc.DrawLine(m_sashPosition+1, m_borderSize - 2, m_sashPosition+1, h - m_borderSize+2);
if (!HasFlag( wxSP_SASH_AQUA ))
dc.SetPen(*m_mediumShadowPen);
int yMedium = m_borderSize ? h-m_borderSize+1 : h ;
dc.DrawLine(m_sashPosition+m_sashSize-2, xShadow, m_sashPosition+m_sashSize-2, yMedium);
if (HasFlag( wxSP_SASH_AQUA ))
dc.SetPen(*m_lightShadowPen);
else
dc.SetPen(*m_darkShadowPen);
dc.DrawLine(m_sashPosition+m_sashSize-1, m_borderSize, m_sashPosition+m_sashSize-1, h-m_borderSize );
// Draw the top and bottom edges of the sash, if requested
if (GetWindowStyle() & wxSP_FULLSASH)
{
// Top
dc.SetPen(*m_hilightPen);
dc.DrawLine(m_sashPosition+1, m_borderSize, m_sashPosition+m_sashSize-1, m_borderSize);
// Bottom
dc.SetPen(*m_darkShadowPen);
dc.DrawLine(m_sashPosition+1, h-m_borderSize-1, m_sashPosition+m_sashSize-1, h-m_borderSize-1);
}
}
else // wxSPLIT_HORIZONTAL
{
dc.SetPen(*m_facePen);
if (HasFlag( wxSP_SASH_AQUA ))
dc.SetBrush(*wxWHITE_BRUSH);
else
dc.SetBrush(*m_faceBrush);
dc.DrawRectangle( m_borderSize-2, m_sashPosition + 2, w-m_borderSize+2, m_sashSize - 4);
dc.SetBrush(*wxTRANSPARENT_BRUSH);
dc.SetPen(*m_lightShadowPen);
dc.DrawLine(m_borderSize-1, m_sashPosition, w-m_borderSize, m_sashPosition);
dc.SetPen(*m_hilightPen);
dc.DrawLine(m_borderSize-2, m_sashPosition+1, w-m_borderSize+1, m_sashPosition+1);
if (!HasFlag( wxSP_SASH_AQUA ))
dc.SetPen(*m_mediumShadowPen);
dc.DrawLine(m_borderSize-1, m_sashPosition+m_sashSize-2, w-m_borderSize+1, m_sashPosition+m_sashSize-2);
if (HasFlag( wxSP_SASH_AQUA ))
dc.SetPen(*m_lightShadowPen);
else
dc.SetPen(*m_darkShadowPen);
dc.DrawLine(m_borderSize, m_sashPosition+m_sashSize-1, w-m_borderSize, m_sashPosition+m_sashSize-1);
// Draw the left and right edges of the sash, if requested
if (GetWindowStyle() & wxSP_FULLSASH)
{
// Left
dc.SetPen(*m_hilightPen);
dc.DrawLine(m_borderSize, m_sashPosition, m_borderSize, m_sashPosition+m_sashSize);
// Right
dc.SetPen(*m_darkShadowPen);
dc.DrawLine(w-m_borderSize-1, m_sashPosition+1, w-m_borderSize-1, m_sashPosition+m_sashSize-1);
}
}
}
else // !wxSP_3DSASH
{
dc.SetPen(*wxTRANSPARENT_PEN);
dc.SetBrush(*m_faceBrush);
if ( m_splitMode == wxSPLIT_VERTICAL )
{
int h1 = h-1;
int y1 = 0;
if ( (GetWindowStyleFlag() & wxSP_BORDER) != wxSP_BORDER && (GetWindowStyleFlag() & wxSP_3DBORDER) != wxSP_3DBORDER )
h1 += 1; // Not sure why this is necessary...
if ( (GetWindowStyleFlag() & wxSP_3DBORDER) == wxSP_3DBORDER)
{
y1 = 2; h1 -= 3;
}
dc.DrawRectangle(m_sashPosition, y1, m_sashSize, h1);
}
else // wxSPLIT_HORIZONTAL
{
int w1 = w-1;
int x1 = 0;
if ( (GetWindowStyleFlag() & wxSP_BORDER) != wxSP_BORDER && (GetWindowStyleFlag() & wxSP_3DBORDER) != wxSP_3DBORDER )
w1 ++;
if ( (GetWindowStyleFlag() & wxSP_3DBORDER) == wxSP_3DBORDER)
{
x1 = 2; w1 -= 3;
}
dc.DrawRectangle(x1, m_sashPosition, w1, m_sashSize);
}
}
dc.SetPen(wxNullPen);
dc.SetBrush(wxNullBrush);
}
// Draw the sash tracker (for whilst moving the sash)
void wxSplitterWindow::DrawSashTracker(int x, int y)
{
int w, h;
GetClientSize(&w, &h);
wxScreenDC screenDC;
int x1, y1;
int x2, y2;
if ( m_splitMode == wxSPLIT_VERTICAL )
{
x1 = x; y1 = 2;
x2 = x; y2 = h-2;
if ( x1 > w )
{
x1 = w; x2 = w;
}
else if ( x1 < 0 )
{
x1 = 0; x2 = 0;
}
}
else
{
x1 = 2; y1 = y;
x2 = w-2; y2 = y;
if ( y1 > h )
{
y1 = h;
y2 = h;
}
else if ( y1 < 0 )
{
y1 = 0;
y2 = 0;
}
}
ClientToScreen(&x1, &y1);
ClientToScreen(&x2, &y2);
screenDC.SetLogicalFunction(wxINVERT);
screenDC.SetPen(*m_sashTrackerPen);
screenDC.SetBrush(*wxTRANSPARENT_BRUSH);
screenDC.DrawLine(x1, y1, x2, y2);
screenDC.SetLogicalFunction(wxCOPY);
screenDC.SetPen(wxNullPen);
screenDC.SetBrush(wxNullBrush);
}
int wxSplitterWindow::GetWindowSize() const
{
wxSize size = GetClientSize();
return m_splitMode == wxSPLIT_VERTICAL ? size.x : size.y;
}
int wxSplitterWindow::AdjustSashPosition(int sashPos) const
{
int window_size = GetWindowSize();
wxWindow *win;
win = GetWindow1();
if ( win )
{
// the window shouldn't be smaller than its own minimal size nor
// smaller than the minimual pane size specified for this splitter
int minSize = m_splitMode == wxSPLIT_VERTICAL ? win->GetMinWidth()
: win->GetMinHeight();
if ( minSize == -1 || m_minimumPaneSize > minSize )
minSize = m_minimumPaneSize;
minSize += GetBorderSize();
if ( sashPos < minSize )
sashPos = minSize;
}
win = GetWindow2();
if ( win )
{
int minSize = m_splitMode == wxSPLIT_VERTICAL ? win->GetMinWidth()
: win->GetMinHeight();
if ( minSize == -1 || m_minimumPaneSize > minSize )
minSize = m_minimumPaneSize;
int maxSize = window_size - minSize - GetBorderSize();
if ( sashPos > maxSize )
sashPos = maxSize;
}
return sashPos;
}
bool wxSplitterWindow::DoSetSashPosition(int sashPos)
{
int newSashPosition = AdjustSashPosition(sashPos);
if ( newSashPosition == m_sashPosition )
return FALSE;
m_sashPosition = newSashPosition;
return TRUE;
}
void wxSplitterWindow::SetSashPositionAndNotify(int sashPos)
{
if ( DoSetSashPosition(sashPos) )
{
wxSplitterEvent event(wxEVT_COMMAND_SPLITTER_SASH_POS_CHANGED, this);
event.m_data.pos = m_sashPosition;
(void)DoSendEvent(event);
}
}
// Position and size subwindows.
// Note that the border size applies to each subwindow, not
// including the edges next to the sash.
void wxSplitterWindow::SizeWindows()
{
// check if we have delayed setting the real sash position
if ( m_requestedSashPosition != INT_MAX )
{
int newSashPosition = ConvertSashPosition(m_requestedSashPosition);
if ( newSashPosition != m_sashPosition )
{
DoSetSashPosition(newSashPosition);
}
if ( newSashPosition <= m_sashPosition
&& newSashPosition >= m_sashPosition - GetBorderSize() )
{
// don't update it any more
m_requestedSashPosition = INT_MAX;
}
}
int w, h;
GetClientSize(&w, &h);
if ( GetWindow1() && !GetWindow2() )
{
GetWindow1()->SetSize(GetBorderSize(), GetBorderSize(),
w - 2*GetBorderSize(), h - 2*GetBorderSize());
}
else if ( GetWindow1() && GetWindow2() )
{
if (GetSplitMode() == wxSPLIT_VERTICAL)
{
int x1 = GetBorderSize();
int y1 = GetBorderSize();
int w1 = GetSashPosition() - GetBorderSize();
int h1 = h - 2*GetBorderSize();
int x2 = GetSashPosition() + GetSashSize();
int y2 = GetBorderSize();
int w2 = w - 2*GetBorderSize() - GetSashSize() - w1;
int h2 = h - 2*GetBorderSize();
GetWindow1()->SetSize(x1, y1, w1, h1);
GetWindow2()->SetSize(x2, y2, w2, h2);
}
else
{
GetWindow1()->SetSize(GetBorderSize(), GetBorderSize(),
w - 2*GetBorderSize(), GetSashPosition() - GetBorderSize());
GetWindow2()->SetSize(GetBorderSize(), GetSashPosition() + GetSashSize(),
w - 2*GetBorderSize(), h - 2*GetBorderSize() - GetSashSize() - (GetSashPosition() - GetBorderSize()));
}
}
wxClientDC dc(this);
if ( GetBorderSize() > 0 )
DrawBorders(dc);
DrawSash(dc);
SetNeedUpdating(FALSE);
}
// Set pane for unsplit window
void wxSplitterWindow::Initialize(wxWindow *window)
{
wxASSERT_MSG( window && window->GetParent() == this,
_T("windows in the splitter should have it as parent!") );
m_windowOne = window;
m_windowTwo = (wxWindow *) NULL;
DoSetSashPosition(0);
}
// Associates the given window with window 2, drawing the appropriate sash
// and changing the split mode.
// Does nothing and returns FALSE if the window is already split.
bool wxSplitterWindow::DoSplit(wxSplitMode mode,
wxWindow *window1, wxWindow *window2,
int sashPosition)
{
if ( IsSplit() )
return FALSE;
wxCHECK_MSG( window1 && window2, FALSE,
_T("can not split with NULL window(s)") );
wxCHECK_MSG( window1->GetParent() == this && window2->GetParent() == this, FALSE,
_T("windows in the splitter should have it as parent!") );
m_splitMode = mode;
m_windowOne = window1;
m_windowTwo = window2;
// remember the sash position we want to set for later if we can't set it
// right now (e.g. because the window is too small)
m_requestedSashPosition = sashPosition;
DoSetSashPosition(ConvertSashPosition(sashPosition));
SizeWindows();
return TRUE;
}
int wxSplitterWindow::ConvertSashPosition(int sashPosition) const
{
if ( sashPosition > 0 )
{
return sashPosition;
}
else if ( sashPosition < 0 )
{
// It's negative so adding is subtracting
return GetWindowSize() + sashPosition;
}
else // sashPosition == 0
{
// default, put it in the centre
return GetWindowSize() / 2;
}
}
// Remove the specified (or second) window from the view
// Doesn't actually delete the window.
bool wxSplitterWindow::Unsplit(wxWindow *toRemove)
{
if ( ! IsSplit() )
return FALSE;
wxWindow *win = NULL;
if ( toRemove == NULL || toRemove == m_windowTwo)
{
win = m_windowTwo ;
m_windowTwo = (wxWindow *) NULL;
}
else if ( toRemove == m_windowOne )
{
win = m_windowOne ;
m_windowOne = m_windowTwo;
m_windowTwo = (wxWindow *) NULL;
}
else
{
wxFAIL_MSG(wxT("splitter: attempt to remove a non-existent window"));
return FALSE;
}
OnUnsplit(win);
DoSetSashPosition(0);
SizeWindows();
return TRUE;
}
// Replace a window with another one
bool wxSplitterWindow::ReplaceWindow(wxWindow *winOld, wxWindow *winNew)
{
wxCHECK_MSG( winOld, FALSE, wxT("use one of Split() functions instead") );
wxCHECK_MSG( winNew, FALSE, wxT("use Unsplit() functions instead") );
if ( winOld == m_windowTwo )
{
m_windowTwo = winNew;
}
else if ( winOld == m_windowOne )
{
m_windowOne = winNew;
}
else
{
wxFAIL_MSG(wxT("splitter: attempt to replace a non-existent window"));
return FALSE;
}
SizeWindows();
return TRUE;
}
void wxSplitterWindow::SetMinimumPaneSize(int min)
{
m_minimumPaneSize = min;
SetSashPosition(m_sashPosition); // re-check limits
}
void wxSplitterWindow::SetSashPosition(int position, bool redraw)
{
DoSetSashPosition(position);
if ( redraw )
{
SizeWindows();
}
}
// Initialize colours
void wxSplitterWindow::InitColours()
{
wxDELETE( m_facePen );
wxDELETE( m_faceBrush );
wxDELETE( m_mediumShadowPen );
wxDELETE( m_darkShadowPen );
wxDELETE( m_lightShadowPen );
wxDELETE( m_hilightPen );
// Shadow colours
#ifndef __WIN16__
wxColour faceColour(wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE));
m_facePen = new wxPen(faceColour, 1, wxSOLID);
m_faceBrush = new wxBrush(faceColour, wxSOLID);
wxColour mediumShadowColour(wxSystemSettings::GetColour(wxSYS_COLOUR_3DSHADOW));
m_mediumShadowPen = new wxPen(mediumShadowColour, 1, wxSOLID);
wxColour darkShadowColour(wxSystemSettings::GetColour(wxSYS_COLOUR_3DDKSHADOW));
m_darkShadowPen = new wxPen(darkShadowColour, 1, wxSOLID);
wxColour lightShadowColour(wxSystemSettings::GetColour(wxSYS_COLOUR_3DLIGHT));
m_lightShadowPen = new wxPen(lightShadowColour, 1, wxSOLID);
wxColour hilightColour(wxSystemSettings::GetColour(wxSYS_COLOUR_3DHILIGHT));
m_hilightPen = new wxPen(hilightColour, 1, wxSOLID);
#else
m_facePen = new wxPen("LIGHT GREY", 1, wxSOLID);
m_faceBrush = new wxBrush("LIGHT GREY", wxSOLID);
m_mediumShadowPen = new wxPen("GREY", 1, wxSOLID);
m_darkShadowPen = new wxPen("BLACK", 1, wxSOLID);
m_lightShadowPen = new wxPen("LIGHT GREY", 1, wxSOLID);
m_hilightPen = new wxPen("WHITE", 1, wxSOLID);
#endif // __WIN16__
}
bool wxSplitterWindow::DoSendEvent(wxSplitterEvent& event)
{
return !GetEventHandler()->ProcessEvent(event) || event.IsAllowed();
}
// ---------------------------------------------------------------------------
// wxSplitterWindow virtual functions: they now just generate the events
// ---------------------------------------------------------------------------
bool wxSplitterWindow::OnSashPositionChange(int WXUNUSED(newSashPosition))
{
// always allow by default
return TRUE;
}
int wxSplitterWindow::OnSashPositionChanging(int newSashPosition)
{
// If within UNSPLIT_THRESHOLD from edge, set to edge to cause closure.
const int UNSPLIT_THRESHOLD = 4;
// first of all, check if OnSashPositionChange() doesn't forbid this change
if ( !OnSashPositionChange(newSashPosition) )
{
// it does
return -1;
}
// Obtain relevant window dimension for bottom / right threshold check
int window_size = GetWindowSize();
bool unsplit_scenario = FALSE;
if ( m_permitUnsplitAlways || m_minimumPaneSize == 0 )
{
// Do edge detection if unsplit premitted
if ( newSashPosition <= UNSPLIT_THRESHOLD )
{
// threshold top / left check
newSashPosition = 0;
unsplit_scenario = TRUE;
}
if ( newSashPosition >= window_size - UNSPLIT_THRESHOLD )
{
// threshold bottom/right check
newSashPosition = window_size;
unsplit_scenario = TRUE;
}
}
if ( !unsplit_scenario )
{
// If resultant pane would be too small, enlarge it
newSashPosition = AdjustSashPosition(newSashPosition);
}
// If the result is out of bounds it means minimum size is too big,
// so split window in half as best compromise.
if ( newSashPosition < 0 || newSashPosition > window_size )
newSashPosition = window_size / 2;
// now let the event handler have it
//
// FIXME: shouldn't we do it before the adjustments above so as to ensure
// that the sash position is always reasonable?
wxSplitterEvent event(wxEVT_COMMAND_SPLITTER_SASH_POS_CHANGING, this);
event.m_data.pos = newSashPosition;
if ( !DoSendEvent(event) )
{
// the event handler vetoed the change
newSashPosition = -1;
}
else
{
// it could have been changed by it
newSashPosition = event.GetSashPosition();
}
return newSashPosition;
}
// Called when the sash is double-clicked. The default behaviour is to remove
// the sash if the minimum pane size is zero.
void wxSplitterWindow::OnDoubleClickSash(int x, int y)
{
// new code should handle events instead of using the virtual functions
wxSplitterEvent event(wxEVT_COMMAND_SPLITTER_DOUBLECLICKED, this);
event.m_data.pt.x = x;
event.m_data.pt.y = y;
if ( DoSendEvent(event) )
{
if ( GetMinimumPaneSize() == 0 || m_permitUnsplitAlways )
{
Unsplit();
}
}
//else: blocked by user
}
void wxSplitterWindow::OnUnsplit(wxWindow *winRemoved)
{
// do it before calling the event handler which may delete the window
winRemoved->Show(FALSE);
wxSplitterEvent event(wxEVT_COMMAND_SPLITTER_UNSPLIT, this);
event.m_data.win = winRemoved;
(void)DoSendEvent(event);
}
#ifdef __WXMSW__
// this is currently called (and needed) under MSW only...
void wxSplitterWindow::OnSetCursor(wxSetCursorEvent& event)
{
// if we don't do it, the resizing cursor might be set for child window:
// and like this we explicitly say that our cursor should not be used for
// children windows which overlap us
if ( SashHitTest(event.GetX(), event.GetY()) )
{
// default processing is ok
event.Skip();
}
//else: do nothing, in particular, don't call Skip()
}
#endif // wxMSW
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