/
scrollbar.h
197 lines (178 loc) · 5.68 KB
/
scrollbar.h
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#ifndef SCROLLBAR_H
#define SCROLLBAR_H
#include <X11/Xlib.h>
struct rxvt_term;
#define R_SB_NEXT 1
#define R_SB_XTERM 2
#define R_SB_PLAIN 4
#define R_SB_RXVT 8
#define R_SB_ALIGN_CENTRE 0
#define R_SB_ALIGN_TOP 1
#define R_SB_ALIGN_BOTTOM 2
#define SB_WIDTH_NEXT 19
#define SB_WIDTH_XTERM 15
#define SB_WIDTH_PLAIN 7
#ifndef SB_WIDTH_RXVT
# define SB_WIDTH_RXVT 10
#endif
/*
* NeXT scrollbar defines
*/
#define SB_PADDING 1
#define SB_BORDER_WIDTH 1
#define SB_BEVEL_WIDTH_UPPER_LEFT 1
#define SB_BEVEL_WIDTH_LOWER_RIGHT 2
#define SB_LEFT_PADDING (SB_PADDING + SB_BORDER_WIDTH)
#define SB_MARGIN_SPACE (SB_PADDING * 2)
#define SB_BUTTON_WIDTH (SB_WIDTH_NEXT - SB_MARGIN_SPACE - SB_BORDER_WIDTH)
#define SB_BUTTON_HEIGHT (SB_BUTTON_WIDTH)
#define SB_BUTTON_SINGLE_HEIGHT (SB_BUTTON_HEIGHT + SB_PADDING)
#define SB_BUTTON_BOTH_HEIGHT (SB_BUTTON_SINGLE_HEIGHT * 2)
#define SB_BUTTON_TOTAL_HEIGHT (SB_BUTTON_BOTH_HEIGHT + SB_PADDING)
#define SB_BUTTON_BEVEL_X (SB_LEFT_PADDING)
#define SB_BUTTON_FACE_X (SB_BUTTON_BEVEL_X + SB_BEVEL_WIDTH_UPPER_LEFT)
#define SB_THUMB_MIN_HEIGHT (SB_BUTTON_WIDTH - (SB_PADDING * 2))
enum sb_state {
STATE_IDLE = 1,
STATE_MOTION,
STATE_UP,
STATE_DOWN,
};
struct scrollBar_t
{
rxvt_term *term;
char state; /* scrollbar state */
char init; /* scrollbar has been initialised */
unsigned int beg; /* slider sub-window begin height */
unsigned int end; /* slider sub-window end height */
unsigned int top; /* slider top position */
unsigned int bot; /* slider bottom position */
unsigned int style; /* style: rxvt, xterm, next */
unsigned int width; /* scrollbar width */
int shadow; /* scrollbar shadow width */
int last_bot; /* scrollbar last bottom position */
int last_top; /* scrollbar last top position */
int last_state; /* scrollbar last state */
unsigned char align;
Window win;
Cursor leftptr_cursor;
int (scrollBar_t::*update)(int);
void setup (rxvt_term *);
void resize ();
int map (int);
int show (int);
void destroy ();
bool upButton (int y)
{
if (style == R_SB_NEXT)
return y > end && y <= end + width + 1;
if (style == R_SB_RXVT)
return y < beg;
return false;
}
bool dnButton (int y)
{
if (style == R_SB_NEXT)
return y > end + width + 1;
if (style == R_SB_RXVT)
return y > end;
return false;
}
unsigned min_height ()
{
return style == R_SB_NEXT ? SB_THUMB_MIN_HEIGHT : 10;
}
unsigned size ()
{
return end - beg - min_height ();
}
unsigned total_width ()
{
return width + shadow * 2;
}
#if defined(NEXT_SCROLLBAR)
GC blackGC,
whiteGC,
grayGC,
darkGC,
stippleGC;
Pixmap dimple,
upArrow,
downArrow,
upArrowHi,
downArrowHi;
#endif
#if defined(RXVT_SCROLLBAR)
GC scrollbarGC,
topShadowGC,
botShadowGC;
#endif
#if defined(XTERM_SCROLLBAR)
GC xscrollbarGC,
ShadowGC;
#endif
#if defined(PLAIN_SCROLLBAR)
GC pscrollbarGC;
#endif
private:
// update style dependent data
void update_data ();
// scrollbar-next.C
int show_next (int);
// scrollbar-rxvt.C
int show_rxvt (int);
// scrollbar-xterm.C
int show_xterm (int);
// scrollbar-plain.C
int show_plain (int);
void init_next ();
};
#define scrollbar_above_slider(y) ((y) < scrollBar.top)
#define scrollbar_below_slider(y) ((y) > scrollBar.bot)
#define scrollbar_position(y) ((y) - scrollBar.beg)
/*
* +-------------+
* | | <---< SB_PADDING
* | ::::::::::: |
* | ::::::::::: |
* '''''''''''''''''
* ,,,,,,,,,,,,,,,,,
* | ::::::::::: |
* | ::::::::::: |
* | +---------------< SB_BEVEL_WIDTH_UPPER_LEFT
* | | :::::::: |
* | V :::: vv-------< SB_BEVEL_WIDTH_LOWER_RIGHT
* | +---------+ |
* | | ......%%| |
* | | ......%%| |
* | | .. ()..%%| |
* | | ......%%| |
* | | %%%%%%%%| |
* | +---------+ | <.........................
* | | <---< SB_PADDING :
* | +---------+ | <-+.......... :---< SB_BUTTON_TOTAL_HEIGHT
* | | ......%%| | | : :
* | | ../\..%%| | |---< SB_BUTTON_HEIGHT :
* | | %%%%%%%%| | | : :
* | +---------+ | <-+ : :
* | | : :
* | +---------+ | <-+ :---< SB_BUTTON_BOTH_HEIGHT
* | | ......%%| | | : :
* | | ..\/..%%| | | : :
* | | %%%%%%%%| | |---< SB_BUTTON_SINGLE_HEIGHT
* | +---------+ | | : :
* | | | : :
* +-------------+ <-+.........:............:
* ^^|_________| :
* || | :
* || +---< SB_BUTTON_WIDTH
* || :
* |+------< SB_PADDING
* |: :
* +----< SB_BORDER_WIDTH
* : :
* :............:
* |
* +---< SB_WIDTH_NEXT
*/
#endif