devuan
/
tasksel
12
0
Fork 1
Code Issues Pull Requests Releases Wiki Activity
Browse Source

Adds scrollbar support

keep-around/43e990ab3f4cc50982f8dbc32e3465ca7c827876
Randolph Chung 24 years ago
parent
6405d5a237
commit
aa7a4047eb
2 changed files with 144 additions and 27 deletions
Whitespace
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Split View
Diff Options
Show Stats Download Patch File Download Diff File
  1. 167
      slangui.c
  2. 4
      slangui.h

167
slangui.c
View File

@ -1,4 +1,4 @@
/* $Id: slangui.c,v 1.13 2000/01/14 01:40:08 joeyh Exp $ */
/* $Id: slangui.c,v 1.14 2000/01/15 23:03:17 tausq Exp $ */
/* slangui.c - SLang user interface routines */
/* TODO: the redraw code is a bit broken, also this module is using way too many
* global vars */
@ -10,6 +10,7 @@
#include <ctype.h>
#include "data.h"
#include "util.h"
#include "strutl.h"
#include "macros.h"
#include "help.h"
@ -26,6 +27,7 @@
#define BUTTONOBJ 8
#define SELHIGHLIGHT 9
#define HIGHLIGHT 10
#define SCROLLBAR 11
#define CHOOSERWINDOW 0
#define DESCWINDOW 1
@ -37,6 +39,10 @@
#define BUTTON_INFO 2
#define BUTTON_HELP 3
#define SCROLLBAR_NONE 0
#define SCROLLBAR_HORIZ 1
#define SCROLLBAR_VERT 2
#define ROWS SLtt_Screen_Rows
#define COLUMNS SLtt_Screen_Cols
@ -78,6 +84,7 @@ void ui_init(int argc, char * const argv[], struct packages_t *taskpkgs, struct
SLtt_set_color(BUTTONOBJ, NULL, "lightgray", "red");
SLtt_set_color(SELHIGHLIGHT, NULL, "white", "blue");
SLtt_set_color(HIGHLIGHT, NULL, "white", "red");
SLtt_set_color(SCROLLBAR, NULL, "black", "lightgray");
ui_resize();
_initialized = 1;
@ -334,6 +341,47 @@ int ui_drawscreen(void)
return 0;
}
/* Widgets */
void ui_vscrollbar(int row, int col, int height, double percent)
{
int i;
if (percent < 0) percent = 0;
if (percent > 100.0) percent = 100.0;
SLsmg_set_color(SCROLLBAR);
for (i = 0; i < height; i++) {
SLsmg_gotorc(row+i, col);
if (((double)i)/height < percent &&
((double)i+1)/height >= percent) {
SLsmg_write_char('#');
} else {
SLsmg_set_char_set(1);
SLsmg_write_char(SLSMG_CKBRD_CHAR);
SLsmg_set_char_set(0);
}
}
}
void ui_hscrollbar(int row, int col, int width, double percent)
{
int i;
if (percent < 0) percent = 0;
if (percent > 100.0) percent = 100.0;
SLsmg_set_color(SCROLLBAR);
for (i = 0; i < width; i++) {
SLsmg_gotorc(row, col+i);
if (((double)i)/width < percent &&
((double)i+1)/width >= percent) {
SLsmg_write_char('#');
} else {
SLsmg_set_char_set(1);
SLsmg_write_char(SLSMG_CKBRD_CHAR);
SLsmg_set_char_set(0);
}
}
}
void ui_button(int row, int col, char *txt, int selected)
{
char *p;
@ -383,11 +431,37 @@ void ui_title(int row, int col, int width, char *title)
SLsmg_set_char_set(0);
}
void ui_dialog(int row, int col, int height, int width, char *title, char *msg, int reflow)
static void ui_dialog_drawlines(int row, int col, int height, int width,
char **buf, int topline, int leftcol,
int numlines, int scroll)
{
int ri;
int hoffset = ((scroll & SCROLLBAR_HORIZ) ? 6 : 4);
int woffset = ((scroll & SCROLLBAR_VERT) ? 5 : 3);
VERIFY(buf != NULL);
SLsmg_set_color(DIALOGOBJ);
SLsmg_fill_region(row+1, col+1, height-2, width-2, ' ');
for (ri = topline; ri < numlines && ri - topline < height - hoffset; ri++) {
SLsmg_gotorc(row + 1 + ri-topline, col + 1);
if (strlen(buf[ri]) > leftcol)
SLsmg_write_nstring(buf[ri]+leftcol, width - woffset);
}
if (scroll & SCROLLBAR_VERT)
ui_vscrollbar(row+1, col+width-2, height-hoffset,
((double)topline+1)/numlines);
if (scroll & SCROLLBAR_HORIZ)
ui_hscrollbar(row+height-4, col+1, width-woffset,
((double)leftcol+1)/(width-woffset));
ui_button(row+height-2, col+(width-4)/2, _("Ok"), 1);
SLsmg_refresh();
}
void ui_dialog(int row, int col, int height, int width, char *title, char *msg, int reflow, int scroll)
{
char *reflowbuf;
int ri, c;
char *line, *txt;
int ri, c, topline = 0, leftcol = 0, numlines = 0, done = 0, redraw;
char *line, *txt = NULL, **buf = NULL;
if (reflow)
reflowbuf = reflowtext(width - 2, msg);
@ -397,30 +471,65 @@ void ui_dialog(int row, int col, int height, int width, char *title, char *msg,
SLsmg_set_color(DIALOGOBJ);
ui_drawbox(DIALOGOBJ, row, col, height, width, 1);
SLsmg_fill_region(row+1, col+1, height-2, width-2, ' ');
if (title)
ui_title(row, col, width, title);
if (reflowbuf != NULL) {
txt = reflowbuf;
while ((line = strchr(txt, '\n'))) {
numlines++;
txt = line+1;
}
numlines++;
buf = MALLOC(numlines * sizeof(char *));
ri = 0;
while ((line = strsep(&txt, "\n")) && (ri < height - 3)) {
SLsmg_gotorc(row + 1 + ri, col + 1);
SLsmg_write_nstring(line, width - 2);
ri++;
txt = reflowbuf;
while ((line = strsep(&txt, "\n"))) {
buf[ri++] = line;
}
}
ui_button(row+height-2, col+(width-4)/2, _("Ok"), 1);
ui_dialog_drawlines(row, col, height, width, buf, topline, leftcol, numlines, scroll);
SLsmg_refresh();
SLsig_block_signals();
do {
c = 0;
if (SLang_input_pending(5)) c = SLkp_getkey();
} while (!(c == '\n' || c == '\r' || c == SL_KEY_ENTER || isspace(c)) && (_resizing == 0));
SLsig_unblock_signals();
while (!done) {
redraw = 0;
c = SLkp_getkey();
switch (c) {
case '\r': case '\n':
case SL_KEY_ENTER:
done = 1;
break;
case SL_KEY_UP:
if (topline > 0) {
topline--;
redraw = 1;
}
break;
case SL_KEY_DOWN:
if (topline < numlines - 1) {
topline++;
redraw = 1;
}
break;
case SL_KEY_LEFT:
if (leftcol > 0) {
leftcol--;
redraw=1;
}
break;
case SL_KEY_RIGHT:
leftcol++;
redraw=1;
break;
}
if (redraw) {
ui_dialog_drawlines(row, col, height, width, buf, topline, leftcol,
numlines, scroll);
}
}
if (buf) FREE(buf);
if (reflow) FREE(reflowbuf);
}
@ -428,24 +537,29 @@ void ui_drawchooseritem(int index)
{
char buf[1024];
ASSERT(_taskpackages != NULL);
if (index >= _taskpackages->count) DIE("Index out of bounds: %d >= %d", index, _taskpackages->count);
if (index >= _taskpackages->count)
DIE("Index out of bounds: %d >= %d", index, _taskpackages->count);
if (index < _chooserinfo.topindex) return;
SLsmg_set_color(CHOOSEROBJ);
SLsmg_gotorc(_chooserinfo.rowoffset + index - _chooserinfo.topindex, _chooserinfo.coloffset + 1);
SLsmg_gotorc(_chooserinfo.rowoffset + index - _chooserinfo.topindex,
_chooserinfo.coloffset + 1);
snprintf(buf, 1024, "[%c] %s",
(_taskpackagesary[index]->selected == 0 ? ' ' : '*'),
_taskpackagesary[index]->prettyname);
/* I fear the 1 below is an off-by-one error somewhere -- Joeyh */
SLsmg_write_nstring(buf, _chooserinfo.width - 1);
SLsmg_gotorc(_chooserinfo.rowoffset + index - _chooserinfo.topindex, _chooserinfo.coloffset + _taskpackages->maxnamelen + 7);
SLsmg_write_nstring(_taskpackagesary[index]->shortdesc, _chooserinfo.width - _taskpackages->maxnamelen - 7);
SLsmg_gotorc(_chooserinfo.rowoffset + index - _chooserinfo.topindex,
_chooserinfo.coloffset + _taskpackages->maxnamelen + 7);
SLsmg_write_nstring(_taskpackagesary[index]->shortdesc, _chooserinfo.width -
_taskpackages->maxnamelen - 7);
}
void ui_toggleselection(int index)
{
ASSERT(_taskpackages != NULL);
if (index >= _taskpackages->count) DIE("Index out of bounds: %d >= %d", index, _taskpackages->count);
if (index >= _taskpackages->count)
DIE("Index out of bounds: %d >= %d", index, _taskpackages->count);
if (_taskpackagesary[index]->selected == 0)
_taskpackagesary[index]->selected = 1;
@ -460,7 +574,8 @@ void ui_toggleselection(int index)
else
SLsmg_write_string("[*]");
SLsmg_gotorc(_chooserinfo.rowoffset + index - _chooserinfo.topindex, _chooserinfo.coloffset + 3);
SLsmg_gotorc(_chooserinfo.rowoffset + index - _chooserinfo.topindex,
_chooserinfo.coloffset + 3);
SLsmg_refresh();
}
@ -499,7 +614,7 @@ void ui_clearcursor(int index)
void ui_showhelp(void)
{
_chooserinfo.whichwindow = HELPWINDOW;
ui_dialog(3, 3, ROWS - 9, COLUMNS - 10, _("Help"), HELPTXT, 1);
ui_dialog(3, 3, ROWS - 9, COLUMNS - 10, _("Help"), HELPTXT, 1, SCROLLBAR_VERT);
_chooserinfo.whichwindow = CHOOSERWINDOW;
ui_drawscreen();
}
@ -538,7 +653,7 @@ void ui_showpackageinfo(void)
bufleft = sizeof(buf) - strlen(buf) - 1;
}
ui_dialog(2, 2, ROWS-4, COLUMNS-4, pkg->name, buf, 0);
ui_dialog(2, 2, ROWS-4, COLUMNS-4, pkg->name, buf, 0, SCROLLBAR_VERT);
_chooserinfo.whichwindow = CHOOSERWINDOW;
ui_drawscreen();
}

4
slangui.h
View File

@ -12,9 +12,11 @@ int ui_eventloop(void);
void ui_shadow(int x, int y, unsigned int dx, unsigned int dy);
int ui_drawbox(int obj, int x, int y, unsigned int dx, unsigned int dy, int shadow);
void ui_vscrollbar(int row, int col, int height, double percent);
void ui_hscrollbar(int row, int col, int width, double percent);
void ui_button(int row, int col, char *txt, int selected);
void ui_title(int row, int col, int width, char *title);
void ui_dialog(int row, int col, int height, int width, char *title, char *msg, int reflow);
void ui_dialog(int row, int col, int height, int width, char *title, char *msg, int reflow, int scroll);
int ui_cycleselection(int amount);
int ui_drawscreen(void);

Write Preview
Loading…
Cancel
Save