mirror of
https://github.com/ZDoom/qzdoom-gpl.git
synced 2024-11-17 09:41:21 +00:00
426 lines
8.7 KiB
C++
426 lines
8.7 KiB
C++
/*
|
|
** v_text.cpp
|
|
** Draws text to a canvas. Also has a text line-breaker thingy.
|
|
**
|
|
**---------------------------------------------------------------------------
|
|
** Copyright 1998-2005 Randy Heit
|
|
** All rights reserved.
|
|
**
|
|
** Redistribution and use in source and binary forms, with or without
|
|
** modification, are permitted provided that the following conditions
|
|
** are met:
|
|
**
|
|
** 1. Redistributions of source code must retain the above copyright
|
|
** notice, this list of conditions and the following disclaimer.
|
|
** 2. Redistributions in binary form must reproduce the above copyright
|
|
** notice, this list of conditions and the following disclaimer in the
|
|
** documentation and/or other materials provided with the distribution.
|
|
** 3. The name of the author may not be used to endorse or promote products
|
|
** derived from this software without specific prior written permission.
|
|
**
|
|
** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
**---------------------------------------------------------------------------
|
|
**
|
|
*/
|
|
|
|
#include <stdlib.h>
|
|
#include <stdarg.h>
|
|
#include <ctype.h>
|
|
|
|
#include "v_text.h"
|
|
|
|
#include "i_system.h"
|
|
#include "v_video.h"
|
|
#include "hu_stuff.h"
|
|
#include "w_wad.h"
|
|
#include "m_swap.h"
|
|
|
|
#include "doomstat.h"
|
|
#include "templates.h"
|
|
|
|
//
|
|
// SetFont
|
|
//
|
|
// Set the canvas's font
|
|
//
|
|
void DCanvas::SetFont (FFont *font)
|
|
{
|
|
Font = font;
|
|
}
|
|
|
|
void STACK_ARGS DCanvas::DrawChar (int normalcolor, int x, int y, byte character, ...)
|
|
{
|
|
if (Font == NULL)
|
|
return;
|
|
|
|
if (normalcolor >= NUM_TEXT_COLORS)
|
|
normalcolor = CR_UNTRANSLATED;
|
|
|
|
FTexture *pic;
|
|
int dummy;
|
|
|
|
if (NULL != (pic = Font->GetChar (character, &dummy)))
|
|
{
|
|
const BYTE *range = Font->GetColorTranslation ((EColorRange)normalcolor);
|
|
va_list taglist;
|
|
va_start (taglist, character);
|
|
DrawTexture (pic, x, y, DTA_Translation, range, TAG_MORE, &taglist);
|
|
va_end (taglist);
|
|
}
|
|
}
|
|
|
|
//
|
|
// DrawText
|
|
//
|
|
// Write a string using the current font
|
|
//
|
|
void STACK_ARGS DCanvas::DrawText (int normalcolor, int x, int y, const char *string, ...)
|
|
{
|
|
va_list tags;
|
|
DWORD tag;
|
|
BOOL boolval;
|
|
|
|
int w, maxwidth;
|
|
const byte *ch;
|
|
int c;
|
|
int cx;
|
|
int cy;
|
|
int boldcolor;
|
|
const byte *range;
|
|
int height;
|
|
int scalex, scaley;
|
|
int kerning;
|
|
FTexture *pic;
|
|
|
|
if (Font == NULL || string == NULL)
|
|
return;
|
|
|
|
if (normalcolor >= NUM_TEXT_COLORS)
|
|
normalcolor = CR_UNTRANSLATED;
|
|
boldcolor = normalcolor ? normalcolor - 1 : NUM_TEXT_COLORS - 1;
|
|
|
|
range = Font->GetColorTranslation ((EColorRange)normalcolor);
|
|
height = Font->GetHeight () + 1;
|
|
kerning = Font->GetDefaultKerning ();
|
|
|
|
ch = (const byte *)string;
|
|
cx = x;
|
|
cy = y;
|
|
|
|
// Parse the tag list to see if we need to adjust for scaling.
|
|
maxwidth = Width;
|
|
scalex = scaley = 1;
|
|
|
|
va_start (tags, string);
|
|
tag = va_arg (tags, DWORD);
|
|
|
|
while (tag != TAG_DONE)
|
|
{
|
|
va_list *more_p;
|
|
DWORD data;
|
|
void *ptrval;
|
|
|
|
switch (tag)
|
|
{
|
|
case TAG_IGNORE:
|
|
default:
|
|
data = va_arg (tags, DWORD);
|
|
break;
|
|
|
|
case TAG_MORE:
|
|
more_p = va_arg (tags, va_list*);
|
|
va_end (tags);
|
|
#ifdef __GNUC__
|
|
__va_copy (tags, *more_p);
|
|
#else
|
|
tags = *more_p;
|
|
#endif
|
|
break;
|
|
|
|
case DTA_DestWidth:
|
|
case DTA_DestHeight:
|
|
*(DWORD *)tags = TAG_IGNORE;
|
|
data = va_arg (tags, DWORD);
|
|
break;
|
|
|
|
case DTA_Translation:
|
|
*(DWORD *)tags = TAG_IGNORE;
|
|
ptrval = va_arg (tags, void*);
|
|
break;
|
|
|
|
case DTA_CleanNoMove:
|
|
boolval = va_arg (tags, BOOL);
|
|
if (boolval)
|
|
{
|
|
scalex = CleanXfac;
|
|
scaley = CleanYfac;
|
|
maxwidth = Width - (Width % CleanYfac);
|
|
}
|
|
break;
|
|
|
|
case DTA_Clean:
|
|
case DTA_320x200:
|
|
boolval = va_arg (tags, BOOL);
|
|
if (boolval)
|
|
{
|
|
scalex = scaley = 1;
|
|
maxwidth = 320;
|
|
}
|
|
break;
|
|
|
|
case DTA_VirtualWidth:
|
|
maxwidth = va_arg (tags, int);
|
|
scalex = scaley = 1;
|
|
break;
|
|
}
|
|
tag = va_arg (tags, DWORD);
|
|
}
|
|
|
|
height *= scaley;
|
|
|
|
for (;;)
|
|
{
|
|
c = *ch++;
|
|
if (!c)
|
|
break;
|
|
|
|
if (c == TEXTCOLOR_ESCAPE)
|
|
{
|
|
int newcolor = toupper(*ch++);
|
|
|
|
if (newcolor == 0)
|
|
{
|
|
return;
|
|
}
|
|
else if (newcolor == '-')
|
|
{
|
|
newcolor = normalcolor;
|
|
}
|
|
else if (newcolor >= 'A' && newcolor < NUM_TEXT_COLORS + 'A')
|
|
{
|
|
newcolor -= 'A';
|
|
}
|
|
else if (newcolor == '+')
|
|
{
|
|
newcolor = boldcolor;
|
|
}
|
|
else
|
|
{
|
|
continue;
|
|
}
|
|
range = Font->GetColorTranslation ((EColorRange)newcolor);
|
|
continue;
|
|
}
|
|
|
|
if (c == '\n')
|
|
{
|
|
cx = x;
|
|
cy += height;
|
|
continue;
|
|
}
|
|
|
|
if (NULL != (pic = Font->GetChar (c, &w)))
|
|
{
|
|
va_list taglist;
|
|
va_start (taglist, string);
|
|
DrawTexture (pic, cx, cy, DTA_Translation, range, TAG_MORE, &taglist);
|
|
va_end (taglist);
|
|
}
|
|
cx += (w + kerning) * scalex;
|
|
}
|
|
}
|
|
|
|
//
|
|
// Find string width using this font
|
|
//
|
|
int FFont::StringWidth (const BYTE *string) const
|
|
{
|
|
int w = 0;
|
|
int maxw = 0;
|
|
|
|
while (*string)
|
|
{
|
|
if (*string == TEXTCOLOR_ESCAPE)
|
|
{
|
|
if (*(++string))
|
|
++string;
|
|
continue;
|
|
}
|
|
else if (*string == '\n')
|
|
{
|
|
if (w > maxw)
|
|
maxw = w;
|
|
w = 0;
|
|
++string;
|
|
}
|
|
else
|
|
{
|
|
w += GetCharWidth (*string++) + GlobalKerning;
|
|
}
|
|
}
|
|
|
|
return MAX (maxw, w);
|
|
}
|
|
|
|
//
|
|
// Break long lines of text into multiple lines no longer than maxwidth pixels
|
|
//
|
|
static void breakit (brokenlines_t *line, const byte *start, const byte *string, bool keepspace, char linecolor)
|
|
{
|
|
int extra;
|
|
|
|
// Leave out trailing white space
|
|
if (!keepspace)
|
|
{
|
|
while (string > start && isspace (*(string - 1)))
|
|
string--;
|
|
}
|
|
|
|
if (linecolor == 0)
|
|
{
|
|
extra = 0;
|
|
}
|
|
else
|
|
{
|
|
extra = 2;
|
|
}
|
|
|
|
line->string = new char[string - start + extra + 1];
|
|
if (linecolor)
|
|
{
|
|
line->string[0] = TEXTCOLOR_ESCAPE;
|
|
line->string[1] = linecolor;
|
|
}
|
|
strncpy (line->string + extra, (char *)start, string - start);
|
|
line->string[string - start + extra] = 0;
|
|
line->width = screen->Font->StringWidth (line->string);
|
|
}
|
|
|
|
brokenlines_t *V_BreakLines (int maxwidth, const byte *string, bool keepspace)
|
|
{
|
|
brokenlines_t lines[128]; // Support up to 128 lines (should be plenty)
|
|
|
|
const byte *space = NULL, *start = string;
|
|
int i, c, w, nw;
|
|
char lastcolor = 0, linecolor = 0;
|
|
BOOL lastWasSpace = false;
|
|
int kerning = screen->Font->GetDefaultKerning ();
|
|
|
|
i = w = 0;
|
|
|
|
while ( (c = *string++) && i < 128 )
|
|
{
|
|
if (c == TEXTCOLOR_ESCAPE)
|
|
{
|
|
if (*string)
|
|
{
|
|
lastcolor = *string++;
|
|
}
|
|
continue;
|
|
}
|
|
|
|
if (isspace(c))
|
|
{
|
|
if (!lastWasSpace)
|
|
{
|
|
space = string - 1;
|
|
lastWasSpace = true;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
lastWasSpace = false;
|
|
}
|
|
|
|
nw = screen->Font->GetCharWidth (c);
|
|
|
|
if ((w > 0 && w + nw > maxwidth) || c == '\n')
|
|
{ // Time to break the line
|
|
if (!space)
|
|
space = string - 1;
|
|
|
|
lines[i].nlterminated = (c == '\n');
|
|
breakit (&lines[i], start, space, keepspace, linecolor);
|
|
if (c == '\n')
|
|
{
|
|
linecolor = lastcolor = 0;
|
|
}
|
|
else
|
|
{
|
|
linecolor = lastcolor;
|
|
}
|
|
|
|
i++;
|
|
w = 0;
|
|
lastWasSpace = false;
|
|
start = space;
|
|
space = NULL;
|
|
|
|
while (*start && isspace (*start) && *start != '\n')
|
|
start++;
|
|
if (*start == '\n')
|
|
start++;
|
|
else
|
|
while (*start && isspace (*start))
|
|
start++;
|
|
string = start;
|
|
}
|
|
else
|
|
{
|
|
w += nw + kerning;
|
|
}
|
|
}
|
|
|
|
if (string - start > 1)
|
|
{
|
|
const byte *s = start;
|
|
|
|
while (s < string)
|
|
{
|
|
if (keepspace || !isspace (*s))
|
|
{
|
|
lines[i].nlterminated = (*s == '\n');
|
|
s++;
|
|
breakit (&lines[i++], start, string, keepspace, linecolor);
|
|
break;
|
|
}
|
|
s++;
|
|
}
|
|
}
|
|
|
|
{
|
|
// Make a copy of the broken lines and return them
|
|
brokenlines_t *broken = new brokenlines_t[i+1];
|
|
|
|
memcpy (broken, lines, sizeof(brokenlines_t) * i);
|
|
broken[i].string = NULL;
|
|
broken[i].width = -1;
|
|
|
|
return broken;
|
|
}
|
|
}
|
|
|
|
void V_FreeBrokenLines (brokenlines_t *lines)
|
|
{
|
|
if (lines)
|
|
{
|
|
int i = 0;
|
|
|
|
while (lines[i].width != -1)
|
|
{
|
|
delete[] lines[i].string;
|
|
lines[i].string = NULL;
|
|
i++;
|
|
}
|
|
delete[] lines;
|
|
}
|
|
}
|