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Added always-unsplittable style option (wxSP_PERMIT_UNSPLIT)

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Added visual feedback on limits for sash-drag
(Fix of previous broken behaviour: now unplits only if min pane size == 0 or
 if always-unsplittable style flag is used.)


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@2552 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Unknown (BV) 1999-05-24 16:19:06 +00:00
parent 86434d7115
commit 370938d99c
2 changed files with 99 additions and 38 deletions
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21
include/wx/generic/splitter.h
View File

@ -181,12 +181,14 @@ public:
protected:
// our event handlers
void OnSashPosChanged(wxSplitterEvent& event);
void OnSashPosChanging(wxSplitterEvent& event);
void OnDoubleClick(wxSplitterEvent& event);
void OnUnsplitEvent(wxSplitterEvent& event);
void SendUnsplitEvent(wxWindow *winRemoved);
int m_splitMode;
bool m_permitUnsplitAlways;
wxWindow* m_windowOne;
wxWindow* m_windowTwo;
int m_dragMode;
@ -237,14 +239,16 @@ public:
// all
void SetSashPosition(int pos)
{
wxASSERT( GetEventType() == wxEVT_COMMAND_SPLITTER_SASH_POS_CHANGED );
wxASSERT( GetEventType() == wxEVT_COMMAND_SPLITTER_SASH_POS_CHANGED
|| GetEventType() == wxEVT_COMMAND_SPLITTER_SASH_POS_CHANGING);
m_data.pos = pos;
}
int GetSashPosition() const
{
wxASSERT( GetEventType() == wxEVT_COMMAND_SPLITTER_SASH_POS_CHANGED );
wxASSERT( GetEventType() == wxEVT_COMMAND_SPLITTER_SASH_POS_CHANGED
|| GetEventType() == wxEVT_COMMAND_SPLITTER_SASH_POS_CHANGING);
return m_data.pos;
}
@ -300,9 +304,18 @@ typedef void (wxEvtHandler::*wxSplitterEventFunction)(wxSplitterEvent&);
NULL \
},
#define EVT_SPLITTER_DCLICK(id, fn) \
#define EVT_SPLITTER_SASH_POS_CHANGING(id, fn) \
{ \
wxEVT_COMMAND_SPLITTER_DOUBLECLICKED, \
wxEVT_COMMAND_SPLITTER_SASH_POS_CHANGING, \
id, \
-1, \
(wxObjectEventFunction)(wxEventFunction)(wxSplitterEventFunction) &fn, \
NULL \
},
#define EVT_SPLITTER_DCLICK(id, fn) \
{ \
wxEVT_COMMAND_SPLITTER_DOUBLECLICKED, \
id, \
-1, \
(wxObjectEventFunction)(wxEventFunction)(wxSplitterEventFunction) &fn, \

116
src/generic/splitter.cpp
View File

@ -40,6 +40,9 @@ BEGIN_EVENT_TABLE(wxSplitterWindow, wxWindow)
EVT_MOUSE_EVENTS(wxSplitterWindow::OnMouseEvent)
EVT_SPLITTER_SASH_POS_CHANGED(-1, wxSplitterWindow::OnSashPosChanged)
// NB: we borrow OnSashPosChanged for purposes of
// EVT_SPLITTER_SASH_POS_CHANGING since default implementation is identical
EVT_SPLITTER_SASH_POS_CHANGING(-1, wxSplitterWindow::OnSashPosChanged)
EVT_SPLITTER_DCLICK(-1, wxSplitterWindow::OnDoubleClick)
EVT_SPLITTER_UNSPLIT(-1, wxSplitterWindow::OnUnsplitEvent)
END_EVENT_TABLE()
@ -48,6 +51,7 @@ END_EVENT_TABLE()
wxSplitterWindow::wxSplitterWindow()
{
m_splitMode = wxSPLIT_VERTICAL;
m_permitUnsplitAlways = FALSE;
m_windowOne = (wxWindow *) NULL;
m_windowTwo = (wxWindow *) NULL;
m_dragMode = wxSPLIT_DRAG_NONE;
@ -78,6 +82,7 @@ wxSplitterWindow::wxSplitterWindow(wxWindow *parent, wxWindowID id,
: wxWindow(parent, id, pos, size, style, name)
{
m_splitMode = wxSPLIT_VERTICAL;
m_permitUnsplitAlways = (style & wxSP_PERMIT_UNSPLIT) != 0;
m_windowOne = (wxWindow *) NULL;
m_windowTwo = (wxWindow *) NULL;
m_dragMode = wxSPLIT_DRAG_NONE;
@ -212,22 +217,31 @@ void wxSplitterWindow::OnMouseEvent(wxMouseEvent& event)
}
}
if ( new_sash_position == 0 )
if ( m_permitUnsplitAlways
|| m_minimumPaneSize == 0 )
{
// We remove the first window from the view
wxWindow *removedWindow = m_windowOne;
m_windowOne = m_windowTwo;
m_windowTwo = (wxWindow *) NULL;
SendUnsplitEvent(removedWindow);
m_sashPosition = 0;
}
else if ( new_sash_position == window_size )
{
// We remove the second window from the view
wxWindow *removedWindow = m_windowTwo;
m_windowTwo = (wxWindow *) NULL;
SendUnsplitEvent(removedWindow);
m_sashPosition = 0;
// Deal with possible unsplit scenarios
if ( new_sash_position == 0 )
{
// We remove the first window from the view
wxWindow *removedWindow = m_windowOne;
m_windowOne = m_windowTwo;
m_windowTwo = (wxWindow *) NULL;
SendUnsplitEvent(removedWindow);
m_sashPosition = 0;
}
else if ( new_sash_position == window_size )
{
// We remove the second window from the view
wxWindow *removedWindow = m_windowTwo;
m_windowTwo = (wxWindow *) NULL;
SendUnsplitEvent(removedWindow);
m_sashPosition = 0;
}
else
{
m_sashPosition = new_sash_position;
}
}
else
{
@ -260,9 +274,39 @@ void wxSplitterWindow::OnMouseEvent(wxMouseEvent& event)
}
else if (event.Dragging() && (m_dragMode == wxSPLIT_DRAG_DRAGGING))
{
// Obtain window size. We are only interested in the dimension the sash
// splits up
int new_sash_position =
(int) ( m_splitMode == wxSPLIT_VERTICAL ? x : y );
wxSplitterEvent eventSplitter(wxEVT_COMMAND_SPLITTER_SASH_POS_CHANGING,
this);
eventSplitter.m_data.pos = new_sash_position;
if ( GetEventHandler()->ProcessEvent(eventSplitter) )
{
new_sash_position = eventSplitter.GetSashPosition();
if ( new_sash_position == -1 )
{
// change not allowed
return;
}
}
// Erase old tracker
DrawSashTracker(m_oldX, m_oldY);
if (m_splitMode == wxSPLIT_VERTICAL)
x = new_sash_position;
else
y = new_sash_position;
if (new_sash_position != -1)
{
// Only modify if permitted
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
@ -270,9 +314,6 @@ void wxSplitterWindow::OnMouseEvent(wxMouseEvent& event)
// 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.
m_oldX = x;
m_oldY = y;
if ( (short)m_oldX < 0 )
m_oldX = 0;
if ( (short)m_oldY < 0 )
@ -751,26 +792,32 @@ void wxSplitterWindow::OnSashPosChanged(wxSplitterEvent& event)
GetClientSize(&w, &h);
int window_size = (m_splitMode == wxSPLIT_VERTICAL) ? w : h ;
if ( newSashPosition <= UNSPLIT_THRESHOLD )
bool unsplit_scenario = FALSE;
if ( m_permitUnsplitAlways
|| m_minimumPaneSize == 0 )
{
// threshold top / left check
newSashPosition = 0;
}
else if ( newSashPosition < m_minimumPaneSize )
{
// If resultant pane would be too small, enlarge it
newSashPosition = m_minimumPaneSize;
// 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 ( newSashPosition >= window_size - UNSPLIT_THRESHOLD )
{
// threshold bottom/right check
newSashPosition = window_size;
}
else if ( newSashPosition > window_size - m_minimumPaneSize )
if ( !unsplit_scenario )
{
// If resultant pane would be too small, enlarge it
newSashPosition = window_size - m_minimumPaneSize;
if ( newSashPosition < m_minimumPaneSize )
newSashPosition = m_minimumPaneSize;
if ( newSashPosition > window_size - m_minimumPaneSize )
newSashPosition = window_size - m_minimumPaneSize;
}
// If the result is out of bounds it means minimum size is too big,
@ -794,7 +841,8 @@ void wxSplitterWindow::OnDoubleClick(wxSplitterEvent& event)
// for compatibility, call the virtual function
OnDoubleClickSash(event.GetX(), event.GetY());
if ( GetMinimumPaneSize() == 0 )
if ( GetMinimumPaneSize() == 0
|| m_permitUnsplitAlways)
{
Unsplit();
}