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Add V_DrawStringScaled

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This commit is contained in:
James R 2019-06-26 16:45:26 -07:00
parent c9be7f2130
commit 5b07b9b839
2 changed files with 298 additions and 0 deletions
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287
src/v_video.c
View file

@ -2091,6 +2091,293 @@ char *V_WordWrap(INT32 x, INT32 w, INT32 option, const char *string)
return newstring;
}
static inline fixed_t FixedCharacterDim(
fixed_t scale,
fixed_t chw,
INT32 hchw,
INT32 dupx,
fixed_t * cwp)
{
(void)hchw;
(void)dupx;
(*cwp) = chw;
return 0;
}
static inline fixed_t VariableCharacterDim(
fixed_t scale,
fixed_t chw,
INT32 hchw,
INT32 dupx,
fixed_t * cwp)
{
(void)chw;
(void)hchw;
(void)dupx;
(*cwp) = FixedMul ((*cwp) << FRACBITS, scale);
return 0;
}
static inline fixed_t CenteredCharacterDim(
fixed_t scale,
fixed_t chw,
INT32 hchw,
INT32 dupx,
fixed_t * cwp)
{
INT32 cxoff;
/*
For example, center a 4 wide patch to 8 width:
4/2 = 2
8/2 = 4
4 - 2 = 2 (our offset)
2 + 4 = 6 = 8 - 2 (equal space on either side)
*/
cxoff = hchw -((*cwp) >> 1 );
(*cwp) = chw;
return FixedMul (( cxoff * dupx )<< FRACBITS, scale);
}
static inline fixed_t BunchedCharacterDim(
fixed_t scale,
fixed_t chw,
INT32 hchw,
INT32 dupx,
fixed_t * cwp)
{
(void)chw;
(void)hchw;
(void)dupx;
(*cwp) = FixedMul (max (1, (*cwp) - 1) << FRACBITS, scale);
return 0;
}
void V_DrawStringScaled(
fixed_t x,
fixed_t y,
fixed_t scale,
fixed_t spacescale,
fixed_t lfscale,
INT32 flags,
int fontno,
const char *s)
{
fixed_t chw;
INT32 hchw;/* half-width for centering */
fixed_t spacew;
fixed_t lfh;
INT32 dupx;
fixed_t right;
fixed_t bot;
fixed_t (*dim_fn)(fixed_t,fixed_t,INT32,INT32,fixed_t *);
font_t *font;
boolean uppercase;
boolean notcolored;
const UINT8 *colormap;
fixed_t cx, cy;
fixed_t cxoff;
fixed_t cw;
INT32 spacing;
fixed_t left;
int c;
uppercase = !( flags & V_ALLOWLOWERCASE );
flags &= ~(V_FLIP);/* These two (V_ALLOWLOWERCASE) share a bit. */
colormap = V_GetStringColormap(( flags & V_CHARCOLORMASK ));
notcolored = !colormap;
font = &fontv[fontno];
chw = 0;
spacing = ( flags & V_SPACINGMASK );
/*
Hardcoded until a better system can be implemented
for determining how fonts space.
*/
switch (fontno)
{
default:
case HU_FONT:
spacew = 4;
switch (spacing)
{
case V_MONOSPACE:
spacew = 8;
/* FALLTHRU */
case V_OLDSPACING:
chw = 8;
break;
case V_6WIDTHSPACE:
spacew = 6;
}
break;
case TINY_FONT:
spacew = 2;
switch (spacing)
{
case V_MONOSPACE:
spacew = 5;
/* FALLTHRU */
case V_OLDSPACING:
chw = 5;
break;
// Out of video flags, so we're reusing this for alternate charwidth instead
/*case V_6WIDTHSPACE:
spacewidth = 3;*/
}
break;
case KART_FONT:
spacew = 12;
switch (spacing)
{
case V_MONOSPACE:
spacew = 12;
/* FALLTHRU */
case V_OLDSPACING:
chw = 12;
break;
case V_6WIDTHSPACE:
spacew = 6;
}
break;
}
switch (fontno)
{
default:
case HU_FONT:
case TINY_FONT:
case KART_FONT:
if (( flags & V_RETURN8 ))
lfh = 8;
else
lfh = 12;
break;
case LT_FONT:
case CRED_FONT:
lfh = 12;
break;
}
hchw = chw >> 1;
chw <<= FRACBITS;
spacew <<= FRACBITS;
#define Mul( id, scale ) ( id = FixedMul (scale, id) )
Mul (chw, scale);
Mul (spacew, scale);
Mul (lfh, scale);
Mul (spacew, spacescale);
Mul (lfh, lfscale);
#undef Mul
if (( flags & V_NOSCALESTART ))
{
dupx = vid.dupx;
hchw *= dupx;
chw *= dupx;
spacew *= dupx;
lfh *= vid.dupy;
right = vid.width;
}
else
{
dupx = 1;
right = ( vid.width / vid.dupx );
if (!( flags & V_SNAPTOLEFT ))
{
left = ( right - BASEVIDWIDTH )/ 2;/* left edge of drawable area */
x = ( left << FRACBITS )+ x;
right -= left;
}
}
right <<= FRACBITS;
bot = vid.height << FRACBITS;
if (fontno == TINY_FONT)
{
if (chw)
dim_fn = FixedCharacterDim;
else
{
/* Reuse this flag for the alternate bunched-up spacing. */
if (( flags & V_6WIDTHSPACE ))
dim_fn = BunchedCharacterDim;
else
dim_fn = VariableCharacterDim;
}
}
else
{
if (chw)
dim_fn = CenteredCharacterDim;
else
dim_fn = VariableCharacterDim;
}
cx = x;
cy = y;
for (; ( c = *s ); ++s)
{
switch (c)
{
case '\n':
cy += lfh;
if (cy >= bot)
return;
cx = x;
break;
default:
if (( c & 0x80 ))
{
if (notcolored)
{
colormap = V_GetStringColormap(
( ( c & 0x7f )<< V_CHARCOLORSHIFT )&
V_CHARCOLORMASK);
}
}
else if (cx < right)
{
if (uppercase)
c = toupper(c);
c -= font->start;
if (c >= 0 && c < font->size && font->font[c])
{
cw = SHORT (font->font[c]->width) * dupx;
cxoff = (*dim_fn)(scale, chw, hchw, dupx, &cw);
V_DrawFixedPatch(cx + cxoff, cy, scale,
flags, font->font[c], colormap);
cx += cw;
}
else
cx += spacew;
}
}
}
}
//
// Write a string using the hu_font
// NOTE: the text is centered for screens larger than the base width

11
src/v_video.h
View file

@ -195,6 +195,17 @@ void V_DrawLevelTitle(INT32 x, INT32 y, INT32 option, const char *string);
char *V_WordWrap(INT32 x, INT32 w, INT32 option, const char *string);
UINT8 *V_GetStringColormap(INT32 colorflags);
// draw a string using a font
void V_DrawStringScaled(
fixed_t x,
fixed_t y,
fixed_t scale,
fixed_t space_scale,
fixed_t linefeed_scale,
INT32 flags,
int font,
const char *text);
// draw a string using the hu_font
void V_DrawString(INT32 x, INT32 y, INT32 option, const char *string);
void V_DrawCenteredString(INT32 x, INT32 y, INT32 option, const char *string);