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/* 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 AGS_SHARED_GUI_GUI_SLIDER_H
#define AGS_SHARED_GUI_GUI_SLIDER_H
#include "common/std/vector.h"
#include "ags/shared/gui/gui_object.h"
namespace AGS3 {
namespace AGS {
namespace Shared {
class GUISlider : public GUIObject {
public:
GUISlider();
// Tells if the slider is horizontal (otherwise - vertical)
bool IsHorizontal() const;
bool IsOverControl(int x, int y, int leeway) const override;
// Compatibility: sliders are not clipped as of 3.6.0
bool IsContentClipped() const override { return false; }
bool HasAlphaChannel() const override;
// Operations
Rect CalcGraphicRect(bool clipped) override;
void Draw(Bitmap *ds, int x = 0, int y = 0) override;
// Events
bool OnMouseDown() override;
void OnMouseMove(int xp, int yp) override;
void OnMouseUp() override;
// Serialization
void ReadFromFile(Stream *in, GuiVersion gui_version) override;
void WriteToFile(Stream *out) const override;
void ReadFromSavegame(Stream *in, GuiSvgVersion svg_ver) override;
void WriteToSavegame(Stream *out) const override;
// TODO: these members are currently public; hide them later
public:
int32_t MinValue;
int32_t MaxValue;
int32_t Value;
int32_t BgImage;
int32_t HandleImage;
int32_t HandleOffset;
bool IsMousePressed;
private:
// Updates dynamic metrics and positions of elements
void UpdateMetrics();
// Cached coordinates of slider bar; in relative coords
Rect _cachedBar;
// Cached coordinates of slider handle; in relative coords
Rect _cachedHandle;
// The length of the handle movement range, in pixels
int _handleRange;
};
} // namespace Shared
} // namespace AGS
} // namespace AGS3
#endif
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