ui_dropdown.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/>.
 *
 */

#ifndef BLADERUNNER_UI_DROPDOWN_H
#define BLADERUNNER_UI_DROPDOWN_H

#include "bladerunner/color.h"
#include "bladerunner/ui/ui_component.h"

#include "common/array.h"
#include "common/rect.h"
#include "common/str.h"

namespace BladeRunner {

class BladeRunnerEngine;
class UIImagePicker;
class UIScrollBox;

typedef void UIDropDownLineSelectedCallback(void *callbackData, void *source, int data, int mouseButton);
typedef void UIDropDownGenericCallback(void *callbackData, void *source);

class UIDropDown : public UIComponent {

    static const int   kDropDownButtonShapeWidth   =  15;
    static const int   kDropDownButtonShapeHeight  =  10;
    static const uint8 kFrameRectPaddingPx         =   2;
    static const int   kFurthestLeftForScrollBar   = 495;

    static const Color256 kColors[];

    int            _controlLeftX;
    Common::String _labelStr;

    bool           _isVisible;

    int            _lineSelectedId;
    Common::String _lineSelectedStr;
    UIScrollBox   *_lineSelectorScrollBox;
    UIImagePicker *_lineDropdownBtn;
    //int            _lineDropdownBtnTopY;
    //int            _lineDropdownBtnHeight;

    Common::Rect   _lineSelectorFrameRect;
    int            _lineSelectorFrameRectColor;
    bool           _lineSelectorFrameRectHasFocus;
    int            _lineSelectorScrollBoxMaxLineWidth;

    UIDropDownLineSelectedCallback   *_ddlLineSelectedCallback;
    UIDropDownGenericCallback        *_ddlCancelledCallback;
    UIDropDownGenericCallback        *_ddlTopFrameClickCallback;
    void                             *_callbackData;

    int            _mouseX;
    int            _mouseY;

public:
    UIDropDown(BladeRunnerEngine *vm, UIDropDownLineSelectedCallback *ddlLineSelectedCallback,
                                      UIDropDownGenericCallback *ddlCancelledCallback,
                                      UIDropDownGenericCallback *ddlTopFrameClickCallback,
                                      void *callbackData,
                                      Common::String labelStr,
                                      int controlLeftX,
                                      int controlTopY,
                                      int scrollBoxMaxLineCount);
    ~UIDropDown() override;

    void draw(Graphics::Surface &surface) override;

    void handleMouseMove(int mouseX, int mouseY) override;
    void handleMouseDown(bool alternateButton) override;
    void handleMouseUp(bool alternateButton) override;
    void handleMouseScroll(int direction) override;

    void show();
    void hide();
    bool isVisible();
    bool isDropDownMenuExpanded();

    void activate();
    void deactivate();

    void clearLines();
    void addLine(const Common::String &text, int lineData);
    void addLine(const char *text, int lineData);

    void sortLines();

    void setLabelStr(Common::String newLabel);
    void setControlLeft(int controlLeftX);

    Common::String getLineSelectedStr();

private:
    static void mouseDownLDBCallback(int buttonId, void *callbackData);
    static void scrollBoxLineSelectCallback(void *callbackData, void *source, int lineData, int mouseButton);

    void onButtonPressed(int buttonId);

    void showSelectionDropdown(bool showToggle);
};

} // End of namespace BladeRunner

#endif