WidgetComboBox.h

/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * This program 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 3 of the License, or
 * (at your option) any later version.
 *
 * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

/*
 * Copyright (C) 2006-2010 - Frictional Games
 *
 * This file is part of HPL1 Engine.
 */

#ifndef HPL_WIDGET_COMBO_BOX_H
#define HPL_WIDGET_COMBO_BOX_H

#include "hpl1/engine/gui/Widget.h"
#include "hpl1/engine/gui/WidgetBaseClasses.h"

namespace hpl {

class cGuiSkinFont;

class cWidgetTextBox;
class cWidgetButton;
class cWidgetSlider;

class cWidgetComboBox : public iWidget, public iWidgetItemContainer {
public:
    cWidgetComboBox(cGuiSet *apSet, cGuiSkin *apSkin);
    virtual ~cWidgetComboBox();

    void SetSelectedItem(int alX, bool abMoveList = false);
    int GetSelectedItem() { return mlSelectedItem; }

    void SetCanEdit(bool abX);
    bool GetCanEdit();

    void SetMaxShownItems(int alX);
    int GetMaxShownItems() { return mlMaxItems; }

protected:
    // Own functions
    void UpdateProperties();

    void OpenMenu();
    void CloseMenu();

    bool ButtonPress(iWidget *apWidget, cGuiMessageData &aData);
    kGuiCalllbackDeclarationEnd(ButtonPress);

    bool DrawText(iWidget *apWidget, cGuiMessageData &aData);
    kGuiCalllbackDeclarationEnd(DrawText);

    bool SliderMove(iWidget *apWidget, cGuiMessageData &aData);
    kGuiCalllbackDeclarationEnd(SliderMove);

    bool SliderLostFocus(iWidget *apWidget, cGuiMessageData &aData);
    kGuiCalllbackDeclarationEnd(SliderLostFocus);

    // Implemented functions
    void OnLoadGraphics();
    void OnChangeSize();
    void OnChangeText();
    void OnInit();

    void OnDraw(float afTimeStep, cGuiClipRegion *apClipRegion);

    bool OnMouseMove(cGuiMessageData &aData);
    bool OnMouseDown(cGuiMessageData &aData);
    bool OnMouseUp(cGuiMessageData &aData);
    bool OnMouseEnter(cGuiMessageData &aData);
    bool OnMouseLeave(cGuiMessageData &aData);

    bool OnLostFocus(cGuiMessageData &aData);

    // Data
    cWidgetTextBox *mpText;
    cWidgetButton *mpButton;
    cWidgetSlider *mpSlider;

    bool mbMenuOpen;
    float mfMenuHeight;

    float mfButtonWidth;
    float mfSliderWidth;

    int mlMouseOverSelection;
    int mlSelectedItem;
    int mlFirstItem;
    int mlMaxItems;
    int mlItemsShown;

    cGuiGfxElement *mpGfxBackground;

    cGuiGfxElement *mpGfxSelection;

    cGuiGfxElement *mvGfxBorders[4];
    cGuiGfxElement *mvGfxCorners[4];
};

} // namespace hpl

#endif // HPL_WIDGET_COMBO_BOX_H