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/* Starshatter: The Open Source Project
Copyright (c) 2021-2022, Starshatter: The Open Source Project Contributors
Copyright (c) 2011-2012, Starshatter OpenSource Distribution Contributors
Copyright (c) 1997-2006, Destroyer Studios LLC.
AUTHOR: John DiCamillo
OVERVIEW
========
ScrollWindow base class for List, Edit, and Rich Text controls
*/
#ifndef ScrollWindow_h
#define ScrollWindow_h
#include "Types.h"
#include "ActiveWindow.h"
#include "List.h"
// +--------------------------------------------------------------------+
class ScrollWindow : public ActiveWindow
{
public:
enum POLICY { SCROLL_NEVER,
SCROLL_AUTO,
SCROLL_ALWAYS
};
enum SCROLL { SCROLL_NONE,
SCROLL_UP,
SCROLL_PAGE_UP,
SCROLL_DOWN,
SCROLL_PAGE_DOWN,
SCROLL_THUMB
};
enum MISC { BORDER_WIDTH = 2,
EXTRA_WIDTH = 4,
SCROLL_WIDTH = 16,
SCROLL_HEIGHT = 6,
SCROLL_TRACK = SCROLL_WIDTH + 1,
TRACK_START = BORDER_WIDTH + SCROLL_HEIGHT,
THUMB_HEIGHT = SCROLL_WIDTH,
HEADING_EXTRA = BORDER_WIDTH + EXTRA_WIDTH
};
ScrollWindow(ActiveWindow* p, int ax, int ay, int aw, int ah, DWORD aid, DWORD style=0, ActiveWindow* parent=0);
ScrollWindow(Screen* s, int ax, int ay, int aw, int ah, DWORD aid, DWORD style=0, ActiveWindow* parent=0);
virtual ~ScrollWindow();
// Operations:
virtual void Paint();
virtual void Draw();
virtual void DrawTransparent();
virtual void DrawContent(const Rect& ctrl_rect);
virtual void DrawTransparentContent(const Rect& ctrl_rect);
virtual void DrawScrollBar();
virtual void MoveTo(const Rect& r);
// Event Target Interface:
virtual int OnMouseMove(int x, int y);
virtual int OnLButtonDown(int x, int y);
virtual int OnLButtonUp(int x, int y);
virtual int OnMouseWheel(int wheel);
virtual int OnClick();
virtual int OnKeyDown(int vk, int flags);
// pseudo-events:
virtual int OnDragStart(int x, int y);
virtual int OnDragDrop(int x, int y, ActiveWindow* source);
// Property accessors:
virtual int GetLineHeight();
virtual void SetLineHeight(int h);
virtual int GetLeading();
virtual void SetLeading(int nNewValue);
virtual int GetScrollBarVisible();
virtual void SetScrollBarVisible(int nNewValue);
virtual int GetDragDrop();
virtual void SetDragDrop(int nNewValue);
virtual bool GetSmoothScroll();
virtual void SetSmoothScroll(bool s);
virtual bool IsScrollVisible();
virtual bool CanScroll(int direction, int nlines=1);
virtual void EnsureVisible(int index);
virtual void Scroll(int direction, int nlines=1);
virtual void SmoothScroll(int direction, double nlines);
virtual void ScrollTo(int index);
// read-only:
virtual int GetTopIndex();
virtual int GetLineCount();
virtual int GetPageCount();
virtual int GetPageSize();
virtual int GetScrollTrack();
int IsDragging() const { return dragging; }
int IsSelecting() const { return selecting; }
int IsScrolling() const { return scrolling; }
protected:
int captured;
int dragging;
int selecting;
int scrolling;
int scroll_count;
int mouse_x;
int mouse_y;
int track_length;
int thumb_pos;
int leading;
int scroll_bar;
int dragdrop;
int line_count;
int page_count;
int page_size;
int top_index;
int line_height;
bool smooth_scroll;
double smooth_offset;
};
#endif // ScrollWindow_h
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