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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 TINSEL_SCROLL_H // prevent multiple includes
#define TINSEL_SCROLL_H
namespace Tinsel {
#define MAX_HNOSCROLL 10
#define MAX_VNOSCROLL 10
// These structures defined here so boundaries can be saved
struct NOSCROLLB {
int ln;
int c1;
int c2;
};
struct SCROLLDATA {
NOSCROLLB NoVScroll[MAX_VNOSCROLL]; // Vertical no-scroll boundaries
NOSCROLLB NoHScroll[MAX_HNOSCROLL]; // Horizontal no-scroll boundaries
unsigned NumNoV, NumNoH; // Counts of no-scroll boundaries
// DW2 fields
int xTrigger;
int xDistance;
int xSpeed;
int yTriggerTop;
int yTriggerBottom;
int yDistance;
int ySpeed;
};
class Scroll {
public:
Scroll();
void DontScrollCursor();
void DoScrollCursor();
void SetNoScroll(int x1, int y1, int x2, int y2);
void DropScroll();
void ScrollFocus(int actor);
int GetScrollFocus();
void ScrollTo(int x, int y, int xIter, int yIter);
void KillScroll();
void GetNoScrollData(SCROLLDATA *ssd);
void RestoreNoScrollData(SCROLLDATA *ssd);
void SetScrollParameters(int xTrigger, int xDistance, int xSpeed, int yTriggerTop,
int yTriggerBottom, int yDistance, int ySpeed);
bool IsScrolling();
void ScrollImage();
void MonitorScroll();
void InitScroll(int width, int height);
private:
void NeedScroll(int direction);
void RestoreScrollDefaults();
int _leftScroll, _downScroll; // Number of iterations outstanding
int _scrollActor;
MOVER *_pScrollMover;
int _oldx, _oldy;
/** Boundaries and numbers of boundaries */
SCROLLDATA _scrollData;
int _imageW, _imageH;
bool _scrollCursor; // If a TAG or EXIT polygon is clicked on,
// the cursor is kept over that polygon
// whilst scrolling
int _scrollPixelsX, _scrollPixelsY;
};
void ScrollProcess(CORO_PARAM, const void *);
} // End of namespace Tinsel
#endif /* TINSEL_SCROLL_H */
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