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/* Copyright (C) 2011 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 "VariationControl.h"
#include "ScenarioEditor/Tools/Common/ObjectSettings.h"
VariationControl::VariationControl(wxWindow* parent, Observable<ObjectSettings>& objectSettings)
: wxScrolledWindow(parent, -1),
m_ObjectSettings(objectSettings)
{
m_Conn = m_ObjectSettings.RegisterObserver(1, &VariationControl::OnObjectSettingsChange, this);
SetScrollRate(0, 5);
m_Sizer = new wxBoxSizer(wxVERTICAL);
SetSizer(m_Sizer);
}
// Event handler shared by all the combo boxes created by this window
void VariationControl::OnSelect(wxCommandEvent& evt)
{
std::set<wxString> selections;
// It's possible for a variant name to appear in multiple groups.
// If so, assume that all the names in each group are the same, so
// we don't have to worry about some impossible combinations (e.g.
// one group "a,b", a second "b,c", and a third "c,a", where's there's
// no set of selections that matches one (and only one) of each group).
//
// So... When a combo box is changed from 'a' to 'b', add 'b' to the new
// selections and make sure any other combo boxes containing both 'a' and
// 'b' no longer contain 'a'.
wxComboBox* thisComboBox = wxDynamicCast(evt.GetEventObject(), wxComboBox);
wxCHECK(thisComboBox != NULL, );
wxString newValue = thisComboBox->GetValue();
selections.insert(newValue);
for (size_t i = 0; i < m_ComboBoxes.size(); ++i)
{
wxComboBox* comboBox = m_ComboBoxes[i];
// If our newly selected value is used in another combobox, we want
// that combobox to use the new value, so don't add its old value
// to the list of selections
if (comboBox->FindString(newValue) == wxNOT_FOUND)
selections.insert(comboBox->GetValue());
}
m_ObjectSettings.SetActorSelections(selections);
m_ObjectSettings.NotifyObserversExcept(m_Conn);
RefreshObjectSettings();
}
void VariationControl::OnObjectSettingsChange(const ObjectSettings& settings)
{
Freeze();
const std::vector<ObjectSettings::Group>& variation = settings.GetActorVariation();
// Creating combo boxes seems to be pretty expensive - so we create as
// few as possible, by never deleting any.
size_t oldCount = m_ComboBoxes.size();
size_t newCount = variation.size();
// If we have too many combo boxes, hide the excess ones
for (size_t i = newCount; i < oldCount; ++i)
{
m_ComboBoxes[i]->Show(false);
}
for (size_t i = 0; i < variation.size(); ++i)
{
const ObjectSettings::Group& group = variation[i];
if (i < oldCount)
{
// Already got enough boxes available, so use an old one
wxComboBox* comboBox = m_ComboBoxes[i];
// Replace the contents of the old combobox with the new data
comboBox->Freeze();
comboBox->Clear();
comboBox->Append(group.variants);
comboBox->SetValue(group.chosen);
comboBox->Show(true);
comboBox->Thaw();
}
else
{
// Create an initially empty combobox, because we can fill it
// quicker than the default constructor can
wxComboBox* combo = new wxComboBox(this, -1, wxEmptyString, wxDefaultPosition,
wxSize(80, wxDefaultCoord), wxArrayString(), wxCB_READONLY);
// Freeze it before adding all the values
combo->Freeze();
combo->Append(group.variants);
combo->SetValue(group.chosen);
combo->Thaw();
// Add the on-select event handler
combo->Connect(wxID_ANY, wxEVT_COMMAND_COMBOBOX_SELECTED,
wxCommandEventHandler(VariationControl::OnSelect), NULL, this);
// Add box to sizer and list
m_Sizer->Add(combo, wxSizerFlags().Expand());
m_ComboBoxes.push_back(combo);
}
}
Layout();
Thaw();
// Make the scrollbars appear when appropriate
FitInside();
}
void VariationControl::RefreshObjectSettings()
{
const std::vector<ObjectSettings::Group>& variation = m_ObjectSettings.GetActorVariation();
// For each group, set the corresponding combobox's value to the chosen one
size_t i = 0;
for (std::vector<ObjectSettings::Group>::const_iterator group = variation.begin();
group != variation.end() && i < m_ComboBoxes.size();
++group, ++i)
{
m_ComboBoxes[i]->SetValue(group->chosen);
}
}
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