bcscrollbar.h

用你的语音Modem实现像电话一样通话的程序

#ifndef BCSCROLLBAR_H
#define BCSCROLLBAR_H

class BC_ScrollBar;
class BC_XScrollBar;
class BC_YScrollBar;

#include "bccolors.h"
#include "bckeys.h"
#include "bctool.h"
#include "bcwindow.h"

class BC_ScrollBar : public BC_Tool      // scrollbar base class
{
public:
	BC_ScrollBar(int x_, int y_, int w_, int h_, long length_, long position_, long handlelength_);
	create_tool_objects();
	
	virtual cursor_left_() {};
	virtual button_press_() {};
	virtual cursor_motion_() {};
	button_release_();
	virtual test_highlight() {};

// redraw everything
	resize(int x_, int y_, int w_, int h_, long length_, long position_, long handlelength_);

// resize the tool
	set_size(int x_, int y_, int w_, int h_);

// rescale scroll bar handles
	set_position(long length_, long position_, long handlelength_);

	long get_position();        // position of scrollbar
	long get_distance();        // get distance moved
	in_use();                   // scrollbar is in use





// ==================================================================	

// handle resize call from subwindow
	resize(int w, int h);       

	get_positions(int boxlength);  // get positions for the generic box
	virtual draw() = 0;
	handle_arrows(); // subset of events for arrows
	repeat_();       // for handle_arrows

// ========================================== data
	long length, position, handlelength;   // handle position and size
	long distance;
	int buttondown;                 // if button is down
	int backarrow, forwardarrow, box, backpage, forwardpage; // which is active
	int backhi, forwardhi, boxhi;     // which is highlighted
	int boxlength, handlew, handlex;  // pixel dimensions
	long init_repeat, sustain_repeat, next_repeat;      // give scrollbar a delay when first pressed
};

class BC_XScrollBar : public BC_ScrollBar
{
public:
	BC_XScrollBar(int x_, int y_, int w_, int h_, long length_, long position_, long handlelength_);

	cursor_left_();
	button_press_();
	cursor_motion_();

	test_highlight();
	draw();
	int relativex, oldx;
  long oldposition;
  int result;
};

class BC_YScrollBar : public BC_ScrollBar
{
public:
	BC_YScrollBar(int x_, int y_, int w_, int h_, long length_, long position_, long handlelength_);

		// return 1 if the position has changed
	cursor_left_();
	button_press_();
	cursor_motion_();

	test_highlight();
	draw();
	
	int relativey, oldy;
  long oldposition;
  int result;
};

#endif