NetBSD/dist/cdk/slider.c

655 lines
15 KiB
C
Raw Normal View History

#include <cdk.h>
/*
* $Author: garbled $
* $Date: 2001/01/09 18:41:54 $
* $Revision: 1.3 $
*/
/*
* Declare file local prototypes.
*/
static void drawCDKSliderField (CDKSLIDER *slider);
DeclareCDKObjects(my_funcs,Slider);
/*
* This function creates a slider widget.
*/
CDKSLIDER *newCDKSlider (CDKSCREEN *cdkscreen, int xplace, int yplace, char *title, char *label, chtype filler, int fieldWidth, int start, int low, int high, int inc, int fastInc, boolean Box, boolean shadow)
{
/* Declare local variables. */
CDKSLIDER *slider = newCDKObject(CDKSLIDER, &my_funcs);
chtype *holder = 0;
int parentWidth = getmaxx(cdkscreen->window);
int parentHeight = getmaxy(cdkscreen->window);
int boxHeight = 3;
int boxWidth = 0;
int maxWidth = INT_MIN;
int horizontalAdjust = 0;
int xpos = xplace;
int ypos = yplace;
int highValueLen = intlen (high);
char **temp = 0;
int x, len, junk, junk2;
/* Set some basic values of the slider field. */
slider->label = 0;
slider->labelLen = 0;
slider->labelWin = 0;
slider->titleLines = 0;
/*
* If the fieldWidth is a negative value, the fieldWidth will
* be COLS-fieldWidth, otherwise, the fieldWidth will be the
* given width.
*/
fieldWidth = setWidgetDimension (parentWidth, fieldWidth, 0);
/* Translate the label char *pointer to a chtype pointer. */
boxWidth = fieldWidth + highValueLen + 2;
if (label != 0)
{
slider->label = char2Chtype (label, &slider->labelLen, &junk);
boxWidth += slider->labelLen;
}
/* Translate the char * items to chtype * */
if (title != 0)
{
temp = CDKsplitString (title, '\n');
slider->titleLines = CDKcountStrings (temp);
/* We need to determine the widest title line. */
for (x=0; x < slider->titleLines; x++)
{
holder = char2Chtype (temp[x], &len, &junk2);
maxWidth = MAXIMUM (maxWidth, len);
freeChtype (holder);
}
/*
* If one of the title lines is wider than the field and the label,
* the box width will expand to accomodate.
*/
if (maxWidth > boxWidth)
{
horizontalAdjust = (int)((maxWidth - boxWidth) / 2) + 1;
boxWidth = maxWidth + 2;
}
/* For each line in the title, convert from char * to chtype * */
for (x=0; x < slider->titleLines; x++)
{
slider->title[x] = char2Chtype (temp[x], &slider->titleLen[x], &slider->titlePos[x]);
slider->titlePos[x] = justifyString (boxWidth - 2, slider->titleLen[x], slider->titlePos[x]);
}
CDKfreeStrings(temp);
}
else
{
/* No title? Set the required variables. */
slider->titleLines = 0;
}
boxHeight += slider->titleLines;
/*
* Make sure we didn't extend beyond the dimensions of the window.
*/
boxWidth = MINIMUM (boxWidth, parentWidth);
boxHeight = MINIMUM (boxHeight, parentHeight);
fieldWidth = (fieldWidth > (boxWidth-slider->labelLen-highValueLen-2) ? (boxWidth-slider->labelLen-highValueLen-2) : fieldWidth);
/* Rejustify the x and y positions if we need to. */
alignxy (cdkscreen->window, &xpos, &ypos, boxWidth, boxHeight);
/* Make the slider window. */
slider->win = newwin (boxHeight + !!shadow, boxWidth + !!shadow, ypos, xpos);
/* Is the main window null??? */
if (slider->win == 0)
{
freeChtype (slider->label);
free (slider);
/* Return a null pointer. */
return (0);
}
keypad (slider->win, TRUE);
leaveok (slider->win, TRUE);
if (slider->titleLines > 0)
{
/* Make the title window. */
slider->titleWin = subwin (slider->win,
slider->titleLines, boxWidth - 2,
ypos + 1, xpos + 1);
}
/* Create the slider label window. */
if (slider->label != 0)
{
slider->labelWin = subwin (slider->win, 1,
slider->labelLen,
ypos + slider->titleLines + 1,
xpos + horizontalAdjust + 1);
}
/* Create the slider field window. */
slider->fieldWin = subwin (slider->win, 1, fieldWidth + highValueLen,
ypos + slider->titleLines + 1,
xpos + slider->labelLen + horizontalAdjust + 1);
/* Create the slider field. */
ScreenOf(slider) = cdkscreen;
slider->parent = cdkscreen->window;
slider->boxWidth = boxWidth;
slider->boxHeight = boxHeight;
slider->fieldWidth = fieldWidth;
slider->filler = filler;
slider->low = low;
slider->high = high;
slider->current = start;
slider->inc = inc;
slider->fastinc = fastInc;
slider->exitType = vNEVER_ACTIVATED;
ObjOf(slider)->box = Box;
slider->shadow = shadow;
slider->preProcessFunction = 0;
slider->preProcessData = 0;
slider->postProcessFunction = 0;
slider->postProcessData = 0;
slider->ULChar = ACS_ULCORNER;
slider->URChar = ACS_URCORNER;
slider->LLChar = ACS_LLCORNER;
slider->LRChar = ACS_LRCORNER;
slider->HChar = ACS_HLINE;
slider->VChar = ACS_VLINE;
slider->BoxAttrib = A_NORMAL;
/* Determine the step value. */
slider->step = (float)((float)slider->fieldWidth/(float)(high-low));
/* Set the start value. */
if (start < low)
{
slider->current = low;
}
/* Clean the key bindings. */
cleanCDKObjectBindings (vSLIDER, slider);
/* Register this baby. */
registerCDKObject (cdkscreen, vSLIDER, slider);
/* Return the pointer. */
return (slider);
}
/*
* This allows the person to use the slider field.
*/
int activateCDKSlider (CDKSLIDER *slider, chtype *actions)
{
/* Declare local variables. */
int ret;
/* Draw the slider widget. */
drawCDKSlider (slider, ObjOf(slider)->box);
/* Check if actions is null. */
if (actions == 0)
{
chtype input = 0;
for (;;)
{
/* Get the input. */
wrefresh (slider->win);
input = wgetch (slider->win);
/* Inject the character into the widget. */
ret = injectCDKSlider (slider, input);
if (slider->exitType != vEARLY_EXIT)
{
return ret;
}
}
}
else
{
int length = chlen (actions);
int x = 0;
/* Inject each character one at a time. */
for (x=0; x < length; x++)
{
ret = injectCDKSlider (slider, actions[x]);
if (slider->exitType != vEARLY_EXIT)
{
return ret;
}
}
}
/* Set the exit type and return. */
slider->exitType = vEARLY_EXIT;
return -1;
}
/*
* This function injects a single character into the widget.
*/
int injectCDKSlider (CDKSLIDER *slider, chtype input)
{
/* Declare some local variables. */
int ppReturn = 1;
/* Set the exit type. */
slider->exitType = vEARLY_EXIT;
/* Draw the field. */
drawCDKSliderField (slider);
/* Check if there is a pre-process function to be called. */
if (slider->preProcessFunction != 0)
{
/* Call the pre-process function. */
ppReturn = ((PROCESSFN)(slider->preProcessFunction)) (vSLIDER, slider, slider->preProcessData, input);
}
/* Should we continue? */
if (ppReturn != 0)
{
/* Check for a key binding. */
if (checkCDKObjectBind(vSLIDER, slider, input) != 0)
{
return -1;
}
else
{
switch (input)
{
case KEY_LEFT : case 'd' : case '-' : case KEY_DOWN :
if (slider->current > slider->low)
{
slider->current -= slider->inc;
}
else
{
Beep();
}
break;
case KEY_RIGHT : case 'u' : case '+' : case KEY_UP :
if (slider->current < slider->high)
{
slider->current += slider->inc;
}
else
{
Beep();
}
break;
case KEY_PPAGE : case 'U' : case CONTROL('B') :
if ((slider->current + slider->fastinc) <= slider->high)
{
slider->current += slider->fastinc;
}
else
{
Beep();
}
break;
case KEY_NPAGE : case 'D' : case CONTROL('F') :
if ((slider->current - slider->fastinc) >= slider->low)
{
slider->current -= slider->fastinc;
}
else
{
Beep();
}
break;
case KEY_HOME : case 'g' : case '0' :
slider->current = slider->low;
break;
case KEY_END : case 'G' : case '$' :
slider->current = slider->high;
break;
case KEY_ESC :
slider->exitType = vESCAPE_HIT;
return -1;
case KEY_RETURN : case KEY_TAB : case KEY_ENTER : case KEY_CR :
slider->exitType = vNORMAL;
return (slider->current);
case CDK_REFRESH :
eraseCDKScreen (ScreenOf(slider));
refreshCDKScreen (ScreenOf(slider));
break;
default :
Beep();
break;
}
}
/* Should we call a post-process? */
if (slider->postProcessFunction != 0)
{
((PROCESSFN)(slider->postProcessFunction)) (vSLIDER, slider, slider->postProcessData, input);
}
}
/* Draw the field window. */
drawCDKSliderField (slider);
/* Set the exit type and return. */
slider->exitType = vEARLY_EXIT;
return -1;
}
/*
* This moves the slider field to the given location.
*/
static void _moveCDKSlider (CDKOBJS *object, int xplace, int yplace, boolean relative, boolean refresh_flag)
{
CDKSLIDER *slider = (CDKSLIDER *)object;
/*
* If this is a relative move, then we will adjust where we want
* to move to.
*/
if (relative)
{
xplace += getbegx(slider->win);
yplace += getbegy(slider->win);
}
/* Adjust the window if we need to. */
alignxy (WindowOf(slider), &xplace, &yplace, slider->boxWidth, slider->boxHeight);
/* Move the window to the new location. */
moveCursesWindow(slider->win, xplace, yplace);
/* Redraw the window, if they asked for it. */
if (refresh_flag)
{
drawCDKSlider (slider, ObjOf(slider)->box);
}
}
/*
* This function draws the slider widget.
*/
static void _drawCDKSlider (CDKOBJS *object, boolean Box)
{
CDKSLIDER *slider = (CDKSLIDER *)object;
int x;
/* Box the widget if asked. */
if (Box)
{
attrbox (slider->win,
slider->ULChar, slider->URChar,
slider->LLChar, slider->LRChar,
slider->HChar, slider->VChar,
slider->BoxAttrib,
slider->shadow);
}
if (slider->titleLines > 0)
{
/* Draw in the title if there is one. */
for (x=0; x < slider->titleLines; x++)
{
writeChtype (slider->titleWin,
slider->titlePos[x], x,
slider->title[x],
HORIZONTAL, 0,
slider->titleLen[x]);
}
}
/* Draw the label. */
if (slider->label != 0)
{
writeChtype (slider->labelWin, 0, 0,
slider->label,
HORIZONTAL, 0,
slider->labelLen);
wnoutrefresh (slider->labelWin);
}
/* Draw the field window. */
drawCDKSliderField (slider);
}
/*
* This draws the slider widget.
*/
static void drawCDKSliderField (CDKSLIDER *slider)
{
/* Declare the local variables. */
int fillerCharacters, len;
char temp[256];
/* Determine how many filler characters need to be drawn. */
fillerCharacters = (int)((slider->current-slider->low) * slider->step);
/* Empty the field. */
werase (slider->fieldWin);
/* Add the character to the window. */
mvwhline (slider->fieldWin, 0, 0, slider->filler, fillerCharacters);
/* Draw the value in the field. */
sprintf (temp, "%d", slider->current);
len = (int)strlen(temp);
writeCharAttrib (slider->fieldWin,
slider->fieldWidth, 0, temp,
A_NORMAL,
HORIZONTAL, 0,
len);
/* Refresh the field window. */
wnoutrefresh (slider->fieldWin);
wnoutrefresh (slider->win);
}
/*
* These functions set the drawing characters of the widget.
*/
void setCDKSliderULChar (CDKSLIDER *slider, chtype character)
{
slider->ULChar = character;
}
void setCDKSliderURChar (CDKSLIDER *slider, chtype character)
{
slider->URChar = character;
}
void setCDKSliderLLChar (CDKSLIDER *slider, chtype character)
{
slider->LLChar = character;
}
void setCDKSliderLRChar (CDKSLIDER *slider, chtype character)
{
slider->LRChar = character;
}
void setCDKSliderVerticalChar (CDKSLIDER *slider, chtype character)
{
slider->VChar = character;
}
void setCDKSliderHorizontalChar (CDKSLIDER *slider, chtype character)
{
slider->HChar = character;
}
void setCDKSliderBoxAttribute (CDKSLIDER *slider, chtype character)
{
slider->BoxAttrib = character;
}
/*
* This sets the background color of the widget.
*/
void setCDKSliderBackgroundColor (CDKSLIDER *slider, char *color)
{
chtype *holder = 0;
int junk1, junk2;
/* Make sure the color isn't null. */
if (color == 0)
{
return;
}
/* Convert the value of the environment variable to a chtype. */
holder = char2Chtype (color, &junk1, &junk2);
/* Set the widgets background color. */
wbkgd (slider->win, holder[0]);
wbkgd (slider->fieldWin, holder[0]);
if (slider->label != 0)
{
wbkgd (slider->labelWin, holder[0]);
}
/* Clean up. */
freeChtype (holder);
}
/*
* This function destroys the slider widget.
*/
void destroyCDKSlider (CDKSLIDER *slider)
{
int x;
/* Erase the object. */
eraseCDKSlider (slider);
/* Clean up the char pointers. */
freeChtype (slider->label);
for (x=0; x < slider->titleLines; x++)
{
freeChtype (slider->title[x]);
}
/* Clean up the windows. */
deleteCursesWindow (slider->win);
/* Unregister this object. */
unregisterCDKObject (vSLIDER, slider);
/* Finish cleaning up. */
free (slider);
}
/*
* This function erases the slider widget from the screen.
*/
static void _eraseCDKSlider (CDKOBJS *object)
{
CDKSLIDER *slider = (CDKSLIDER *)object;
eraseCursesWindow (slider->win);
}
/*
* This function sets the low/high/current values of the slider widget.
*/
void setCDKSlider (CDKSLIDER *slider, int low, int high, int value, boolean Box)
{
setCDKSliderLowHigh (slider, low, high);
setCDKSliderValue (slider, value);
setCDKSliderBox (slider, Box);
}
/*
* This function sets the low/high/current value of the widget.
*/
void setCDKSliderValue (CDKSLIDER *slider, int value)
{
slider->current = value;
}
int getCDKSliderValue (CDKSLIDER *slider)
{
return slider->current;
}
/*
* This function sets the low/high values of the widget.
*/
void setCDKSliderLowHigh (CDKSLIDER *slider, int low, int high)
{
/* Make sure the values aren't out of bounds. */
if (low <= high)
{
slider->low = low;
slider->high = high;
}
else if (low > high)
{
slider->low = high;
slider->high = low;
}
/* Make sure the user hasn't done something silly. */
if (slider->current < low)
{
slider->current = low;
}
if (slider->current > high)
{
slider->current = high;
}
/* Determine the step value. */
slider->step = (float)((float)slider->fieldWidth / (float)(high-low));
}
int getCDKSliderLowValue (CDKSLIDER *slider)
{
return slider->low;
}
int getCDKSliderHighValue (CDKSLIDER *slider)
{
return slider->high;
}
/*
* This sets the box attribute of the slider widget.
*/
void setCDKSliderBox (CDKSLIDER *slider, boolean Box)
{
ObjOf(slider)->box = Box;
}
boolean getCDKSliderBox (CDKSLIDER *slider)
{
return ObjOf(slider)->box;
}
/*
* This function sets the pre-process function.
*/
void setCDKSliderPreProcess (CDKSLIDER *slider, PROCESSFN callback, void *data)
{
slider->preProcessFunction = callback;
slider->preProcessData = data;
}
/*
* This function sets the post-process function.
*/
void setCDKSliderPostProcess (CDKSLIDER *slider, PROCESSFN callback, void *data)
{
slider->postProcessFunction = callback;
slider->postProcessData = data;
}