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/* Starshatter OpenSource Distribution
Copyright (c) 1997-2004, Destroyer Studios LLC.
All Rights Reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
* Neither the name "Destroyer Studios" nor the names of its contributors
may be used to endorse or promote products derived from this software
without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
SUBSYSTEM: nGenEx.lib
FILE: ScrollWindow.h
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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