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/* Copyright (C) 2025 Wildfire Games.
* This file is part of 0 A.D.
*
* 0 A.D. is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* 0 A.D. is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with 0 A.D. If not, see <http://www.gnu.org/licenses/>.
*/
#include "precompiled.h"
#include "SnapSplitterWindow.h"
#include <wx/chartype.h>
#include <wx/config.h>
#include <wx/debug.h>
#include <wx/splitter.h>
#include <wx/toolbar.h>
class wxWindow;
BEGIN_EVENT_TABLE(SnapSplitterWindow, wxSplitterWindow)
EVT_SPLITTER_SASH_POS_CHANGING(wxID_ANY, SnapSplitterWindow::OnSashPosChanging)
EVT_SPLITTER_SASH_POS_CHANGED(wxID_ANY, SnapSplitterWindow::OnSashPosChanged)
EVT_SPLITTER_DCLICK(wxID_ANY, SnapSplitterWindow::OnDoubleClick)
END_EVENT_TABLE()
SnapSplitterWindow::SnapSplitterWindow(wxWindow* parent, long style, const wxString& configPath)
: wxSplitterWindow(parent, wxID_ANY, wxDefaultPosition, wxDefaultSize,
style | wxSP_LIVE_UPDATE),
m_SnapTolerance(16),
m_ConfigPath(configPath)
{
// Set min size, to disable unsplitting
SetMinimumPaneSize(32);
}
void SnapSplitterWindow::SetDefaultSashPosition(int sashPosition)
{
m_DefaultSashPosition = sashPosition;
// Set gravity so that the unspecified-size window is resized
if (sashPosition < 0)
SetSashGravity(1.0);
else if (sashPosition == 0)
SetSashGravity(0.5);
else
SetSashGravity(0.0);
}
bool SnapSplitterWindow::SplitVertically(wxWindow *window1, wxWindow *window2, int sashPosition)
{
if (sashPosition == 0)
sashPosition = m_DefaultSashPosition;
LoadSashPositionIfSaved(&sashPosition);
return wxSplitterWindow::SplitVertically(window1, window2, sashPosition);
}
bool SnapSplitterWindow::SplitHorizontally(wxWindow *window1, wxWindow *window2, int sashPosition)
{
if (sashPosition == 0)
sashPosition = m_DefaultSashPosition;
LoadSashPositionIfSaved(&sashPosition);
return wxSplitterWindow::SplitHorizontally(window1, window2, sashPosition);
}
void SnapSplitterWindow::OnSashPosChanging(wxSplitterEvent& evt)
{
int defaultPos = ConvertSashPosition(m_DefaultSashPosition);
if (evt.GetSashPosition() >= defaultPos-m_SnapTolerance &&
evt.GetSashPosition() <= defaultPos+m_SnapTolerance)
{
evt.SetSashPosition(defaultPos);
}
}
void SnapSplitterWindow::OnSashPosChanged(wxSplitterEvent& WXUNUSED(evt))
{
SaveSashPositionIfChanged();
}
void SnapSplitterWindow::OnDoubleClick(wxSplitterEvent& WXUNUSED(evt))
{
int defaultPos = ConvertSashPosition(m_DefaultSashPosition);
SetSashPosition(defaultPos);
}
bool SnapSplitterWindow::LoadSashPositionIfSaved(int* sashPosition)
{
wxASSERT(sashPosition);
// We use the same config path for both horizontal and vertical splits,
// because we can't have both at the same moment.
wxConfigBase* cfg = wxConfigBase::Get(false);
// wxConfigBase::Read doesn't modify the value if there was an error.
return cfg && cfg->Read(m_ConfigPath + _T("SashPosition"), sashPosition);
}
void SnapSplitterWindow::SaveSashPositionIfChanged()
{
wxConfigBase* cfg = wxConfigBase::Get(false);
if (!cfg)
return;
cfg->Write(m_ConfigPath + _T("SashPosition"), GetSashPosition());
}
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