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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 XYZZY_VIEW_H
#define XYZZY_VIEW_H
#include "xyzzy/events.h"
namespace Xyzzy {
/**
* Base view class for screens and dialogs that appear on-screen.
* The View class takes care of two important things:
* 1) By default events get sent to all controls on a view until one
* handles it. For mouse events, we instead want only the control the
* mouse cursor is over to receive the events, saving the individual
* controls from having to check if the mouse is within their bounds.
* 2) Individual elements will get a Focus/Unfocus message as the
* mouse enters and leaves them. This allows, for example, buttons
* that have been pressed to de-select if the mouse leaves their bounds.
*/
class View : public UIElement {
private:
UIElement *_focusedElement = nullptr;
/**
* Checks if a control is entered or left
*/
void checkFocusedControl(const Common::Point &mousePos);
/**
* Check for an element at the given position
*/
UIElement *getElementAtPos(const Common::Point &pos) const;
public:
View(const Common::String &name, UIElement *uiParent) :
UIElement(name, uiParent) {
}
View(const Common::String &name) :
UIElement(name) {
}
virtual ~View() {
}
bool msgFocus(const FocusMessage &msg) override;
bool msgUnfocus(const UnfocusMessage &msg) override;
bool msgMouseMove(const MouseMoveMessage &msg) override;
bool msgMouseDown(const MouseDownMessage &msg) override;
bool msgMouseUp(const MouseUpMessage &msg) override;
};
} // namespace Xyzzy
#endif
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