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warzone2100/lib/ivis_opengl/textdraw.c

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/*
This file is part of Warzone 2100.
Copyright (C) 1999-2004 Eidos Interactive
Copyright (C) 2005-2007 Warzone Resurrection Project
Warzone 2100 is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
Warzone 2100 is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Warzone 2100; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "lib/ivis_common/ivisdef.h"
#include "lib/ivis_common/piestate.h"
#include "lib/ivis_common/rendmode.h"
#include "lib/ivis_common/rendfunc.h"
#include "lib/ivis_common/pieclip.h"
#include "lib/ivis_common/pieblitfunc.h"
#include "lib/ivis_common/piepalette.h"
#include "lib/ivis_common/ivispatch.h"
#include "lib/ivis_common/textdraw.h"
#include "lib/ivis_common/bitimage.h"
/***************************************************************************/
/*
* Global Variables
*/
/***************************************************************************/
/***************************************************************************/
/*
* Globally Imported Variables (well dodgy)
*/
/***************************************************************************/
extern UBYTE aTransTable[256];//from rendfunc
extern UBYTE aTransTable2[256];//from rendfunc
extern UBYTE aTransTable3[256];//from rendfunc
extern UBYTE aTransTable4[256];//from rendfunc
/***************************************************************************/
/*
* Local Definitions
*/
/***************************************************************************/
#define MAX_IVIS_FONTS 8
typedef struct {
IMAGEFILE *FontFile; // The image data that contains the font.
// UWORD FontStartID; // The image ID of character ASCII 33.
// UWORD FontEndID; // The image ID of last character in the font.
int FontAbove; // Max pixels above the base line.
int FontBelow; // Max pixels below the base line.
int FontLineSize; // Pixel spacing used for new lines.
int FontSpaceSize; // Pixel spacing used for spaces.
SWORD FontColourIndex; // The colour index to use.
// BOOL bGameFont;
UWORD *AsciiTable;
} IVIS_FONT;
/***************************************************************************/
/*
* Local Variables
*/
/***************************************************************************/
static SWORD TextColourIndex;
static int NumFonts;
static int ActiveFontID;
static IVIS_FONT iVFonts[MAX_IVIS_FONTS];
/***************************************************************************/
/*
* Local ProtoTypes
*/
/***************************************************************************/
void pie_BeginTextRender(SWORD ColourIndex);
void pie_TextRender(IMAGEFILE *ImageFile,UWORD ID,int x,int y);
static void pie_TextRender270( IMAGEFILE *ImageFile, UWORD ImageID, int x, int y );
/***************************************************************************/
/*
* Source
*/
/***************************************************************************/
void iV_ClearFonts(void)
{
NumFonts = 0;
ActiveFontID = -1;
}
// Create a font using an ascii lookup table.
//
// IMAGEFILE *ImageFile Image file containing the font graphics.
// UWORD *AsciiTable Array of 256 Ascii to ImageID lookups.
// int SpaceSize Pixel size of a space.
// BOOL bInGame Specifies that the font is used in game (WHY?)
//
int iV_CreateFontIndirect(IMAGEFILE *ImageFile, UWORD *AsciiTable, int SpaceSize)
{
int Above,Below;
int Height;
UWORD Index,c;
IVIS_FONT *Font;
assert(NumFonts < MAX_IVIS_FONTS-1);
Font = &iVFonts[NumFonts];
Font->FontFile = ImageFile;
Font->AsciiTable = AsciiTable;
Font->FontSpaceSize = SpaceSize;
Font->FontLineSize = 0;
Font->FontAbove = 0;
Font->FontBelow = 0;
// Initialise the font metrics.
for(c=0; c<256; c++) {
Index = (UWORD)AsciiTable[c];
Above = iV_GetImageYOffset(Font->FontFile,Index);
Below = Above + iV_GetImageHeight(Font->FontFile,Index);
Height = abs(Above) + abs(Below);
if(Above < Font->FontAbove) {
Font->FontAbove = Above;
}
if(Below > Font->FontBelow) {
Font->FontBelow = Below;
}
if(Height > Font->FontLineSize) {
Font->FontLineSize = Height;
}
}
ActiveFontID = NumFonts;
NumFonts++;
return NumFonts-1;
}
void iV_SetFont(int FontID)
{
assert(FontID < NumFonts);
ActiveFontID = FontID;
}
int iV_GetTextLineSize(void)
{
IVIS_FONT *Font = &iVFonts[ActiveFontID];
return abs(Font->FontAbove) + abs(Font->FontBelow);
}
int iV_GetTextAboveBase(void)
{
IVIS_FONT *Font = &iVFonts[ActiveFontID];
return Font->FontAbove;
}
int iV_GetTextBelowBase(void)
{
IVIS_FONT *Font = &iVFonts[ActiveFontID];
return Font->FontBelow;
}
int iV_GetTextWidth(char *String)
{
int Index;
int MaxX = 0;
UWORD ImageID;
IVIS_FONT *Font = &iVFonts[ActiveFontID];
while (*String!=0) {
Index = *String;
if(Index != ASCII_COLOURMODE) {
if(Index != ASCII_SPACE) {
ImageID = (UWORD)Font->AsciiTable[Index];
MaxX += iV_GetImageWidth(Font->FontFile,ImageID) + 1;
} else {
MaxX += Font->FontSpaceSize;
}
}
// DBPRINTF(("letter[%c] currentwidth=%d\n",Index,MaxX));
String++;
}
return MaxX;
}
int iV_GetCharWidth(char Char)
{
int Index;
UWORD ImageID;
int Width = 0;
IVIS_FONT *Font = &iVFonts[ActiveFontID];
Index = Char;
if(Index != ASCII_COLOURMODE) {
if(Index != ASCII_SPACE) {
ImageID = (UWORD)Font->AsciiTable[Index];
Width = iV_GetImageWidth(Font->FontFile,ImageID) + 1;
} else {
Width = Font->FontSpaceSize;
}
}
return Width;
}
void iV_SetTextColour(SWORD Index)
{
IVIS_FONT *Font = &iVFonts[ActiveFontID];
Font->FontColourIndex = Index;
}
// --------------------------------------------------------------------------
enum {
EXTENTS_NONE,
EXTENTS_START,
EXTENTS_END
};
static char FString[256]; // Must do something about these wastefull static arrays.
static char FWord[256];
static int LastX; // Cursor position after last draw.
static int LastY;
static int LastTWidth; // Pixel width of the last string draw.
static UDWORD FFlags = FTEXTF_SKIP_TRAILING_SPACES | FTEXTF_INSERT_SPACE_ON_APPEND;
static int RecordExtents = EXTENTS_NONE;
static int ExtentsStartX;
static int ExtentsStartY;
static int ExtentsEndX;
static int ExtentsEndY;
void pie_SetFormattedTextFlags(UDWORD Flags)
{
FFlags = Flags;
}
UDWORD pie_GetFormattedTextFlags(void)
{
return FFlags;
}
static RENDERTEXT_CALLBACK Indirect_pie_DrawText= pie_DrawText;
void SetIndirectDrawTextCallback( RENDERTEXT_CALLBACK routine)
{
Indirect_pie_DrawText=routine;
}
RENDERTEXT_CALLBACK GetIndirectDrawTextCallback( void)
{
return(Indirect_pie_DrawText);
}
#define EXTENTS_USEMAXWIDTH (0)
#define EXTENTS_USELASTX (1)
//UBYTE ExtentsMode=EXTENTS_USEMAXWIDTH;
UBYTE ExtentsMode=EXTENTS_USEMAXWIDTH;
// Draws formatted text with word wrap, long word splitting, embedded
// newlines ( uses @ rather than \n ) and colour mode toggle ( # ) which enables
// or disables font colouring.
//
// UBYTE *String The string to display.
// UDWORD x x coord of top left of formatted text window.
// UDWORD y y coord of top left of formatted text window.
// UDWORD Width Width of formatted text window.
// UDWORD Justify Justify mode, one of the following:
// FTEXT_LEFTJUSTIFY
// FTEXT_CENTRE
// FTEXT_RIGHTJUSTIFY
// FTEXT_LEFTJUSTIFYAPPEND
// BOOL DrawBack If TRUE then draws transparent box behind text.
//
// NOTE,
// FTEXT_LEFTJUSTIFYAPPEND should only be used immediatly after calling with FTEXT_LEFTJUSTIFY
// or FTEXT_LEFTJUSTIFYAPPEND
//
// Returns y coord of next text line.
//
UDWORD pie_DrawFormattedText( char *String, UDWORD x, UDWORD y, UDWORD Width, UDWORD Justify )
{
int i,osi;
UDWORD si, Len = strlen(String);
int jx = x; // Default to left justify.
int jy = y;
UDWORD WWidth;
BOOL GotSpace;
BOOL NewLine;
BOOL AddLeadingSpace = FALSE;
int t;
int TWidth;
si = 0;
// DBPRINTF(("[%s] @(%d,%d) extentsmode=%d just=%d\n",String,x,y,ExtentsMode,Justify));
while(si < Len) {
// Remove leading spaces, usefull when doing centre justify.
if(FFlags & FTEXTF_SKIP_LEADING_SPACES) {
while( (si < strlen(String)) && (String[si] == ' ') ) {
si++;
}
}
FString[0] = 0;
if(Justify == FTEXT_LEFTJUSTIFYAPPEND) {
WWidth = LastTWidth;
if(FFlags & FTEXTF_INSERT_SPACE_ON_APPEND) {
AddLeadingSpace = TRUE;
}
} else {
WWidth = 0;
AddLeadingSpace = FALSE;
}
GotSpace = FALSE;
NewLine = FALSE;
// Parse through the string, adding words until width is achieved.
while( (si < strlen((char*)String)) && (WWidth <= Width) && (!NewLine)) {
osi = si;
// Get the next word.
i = 0;
#ifdef TESTBED
memset(FWord,0,256);
#endif
if(AddLeadingSpace) {
WWidth += iV_GetCharWidth(' ');
if(WWidth <= Width) {
FWord[i] = ' ';
i++;
GotSpace = TRUE;
AddLeadingSpace = FALSE;
}
}
while( (String[si] != 0) && (String[si] != ' ') && (WWidth <= Width)) {
// Check for new line character.
if(String[si] == ASCII_COLOURMODE) { // If it's a colour mode toggle char then just add it to the word.
FWord[i] = String[si];
i++;
si++;
} else {
// Update this lines pixel width.
WWidth += iV_GetCharWidth(String[si]);
// If width ok then add this character to the current word.
if(WWidth <= Width) {
FWord[i] = String[si];
i++;
si++;
}
}
}
// Don't forget the space.
if(String[si] == ' ') {
WWidth += iV_GetCharWidth(' ');
if(WWidth <= Width) {
FWord[i] = ' ';
i++;
si++;
GotSpace = TRUE;
}
}
// If we've passed a space and the word goes past the width then rewind
// to that space and finish this line.
if(GotSpace) {
if( (WWidth >= Width) ) {
if(FWord[i-1] == ' ') {
FWord[i] = 0;
} else {
si = osi;
break;
}
}
}
// Terminate the word.
FWord[i] = 0;
// And add it to the output string.
strcat(FString, FWord);
}
// Remove trailing spaces, usefull when doing centre justify.
if(FFlags & FTEXTF_SKIP_TRAILING_SPACES) {
for (t = strlen(FString) - 1; t >= 0; t--) {
if(FString[t] != ' ') {
break;
}
FString[t] = 0;
}
}
#ifdef _TESTBED
// Replace spaces with ~.
for (t = 0; t < strlen(FString); t++) {
if(FString[t] == ' ') FString[t] = '~';
}
#endif
TWidth = iV_GetTextWidth(FString);
// DBPRINTF(("string[%s] is %d of %d pixels wide (according to DrawFormattedText)\n",FString,TWidth,Width));
// Do justify.
switch(Justify) {
case FTEXT_CENTRE:
jx = x + (Width-TWidth)/2;
break;
case FTEXT_RIGHTJUSTIFY:
jx = x + Width-TWidth;
break;
case FTEXT_LEFTJUSTIFY:
jx = x;
break;
case FTEXT_LEFTJUSTIFYAPPEND:
jx = LastX;
jy = LastY;
Justify = FTEXT_LEFTJUSTIFY;
break;
}
// draw the text.
// This is an indirect routine
if (Indirect_pie_DrawText)
Indirect_pie_DrawText(FString,jx,jy);
//DBPRINTF(("[%s] @ %d,%d\n",FString,jx,jy));
/* callback type for resload display callback*/
// remember where we were..
LastX = jx + TWidth;
LastY = jy;
LastTWidth = TWidth;
if (ExtentsMode==EXTENTS_USELASTX)
{
if (RecordExtents==EXTENTS_START)
{
//
ExtentsStartY = y + iV_GetTextAboveBase();
ExtentsEndY = jy - iV_GetTextLineSize()+iV_GetTextBelowBase();
RecordExtents = EXTENTS_END;
ExtentsStartX=jx;
ExtentsEndX=LastX;
}
else
{
if (jx<ExtentsStartX) ExtentsStartX=jx;
if (LastX>ExtentsEndX) ExtentsEndX=LastX;
}
// DBPRINTF(("extentsstartx = %d extentsendx=%d\n",ExtentsStartX,ExtentsEndX));
}
// and move down a line.
jy += iV_GetTextLineSize();
}
if(RecordExtents == EXTENTS_START) {
RecordExtents = EXTENTS_END;
ExtentsStartY = y + iV_GetTextAboveBase();
ExtentsEndY = jy - iV_GetTextLineSize()+iV_GetTextBelowBase();
if (ExtentsMode==EXTENTS_USEMAXWIDTH)
{
ExtentsStartX = x; // Was jx, but this broke the console centre justified text background.
// ExtentsEndX = jx + TWidth;
ExtentsEndX = x + Width;
}
else
{
if (jx<ExtentsStartX) ExtentsStartX=jx;
if (LastX>ExtentsEndX) ExtentsEndX=LastX;
}
} else if(RecordExtents == EXTENTS_END) {
ExtentsEndY = jy - iV_GetTextLineSize()+iV_GetTextBelowBase();
if (ExtentsMode==EXTENTS_USEMAXWIDTH)
{
ExtentsEndX = x + Width;
}
}
return jy;
}
static SWORD OldTextColourIndex = -1;
void pie_DrawText(char *string, UDWORD x, UDWORD y)
{
int Index;
UWORD ImageID;
IVIS_FONT *Font = &iVFonts[ActiveFontID];
/* Colour selection */
pie_BeginTextRender(Font->FontColourIndex);
while (*string!=0) {
Index = *string;
// Toggle colour mode?
if(Index == ASCII_COLOURMODE) {
if(TextColourIndex >= 0) {
OldTextColourIndex = TextColourIndex;
TextColourIndex = -1;
} else {
if(OldTextColourIndex >= 0) {
TextColourIndex = OldTextColourIndex;
}
}
} else if(Index == ASCII_SPACE) {
x += Font->FontSpaceSize;
} else {
ImageID = (UWORD)Font->AsciiTable[Index];
pie_TextRender(Font->FontFile,ImageID,x,y);
x += iV_GetImageWidth(Font->FontFile,ImageID) + 1;
}
// Don't use this any more, If the text needs to wrap then use
// pie_DrawFormattedText() defined above.
/* New bit to make text wrap */
if(x > (pie_GetVideoBufferWidth() - Font->FontSpaceSize) )
{
/* Drop it to the next line if we hit screen edge */
x = 0;
y += iV_GetTextLineSize();
}
string++;
}
}
//draw Blue tinted bitmap
void pie_RenderBlueTintedBitmap(iBitmap *bmp, int x, int y, int w, int h, int ow)
{
int i, j, lineSkip;
Uint8 *bp;
Uint8 present;
bp = (Uint8 *) psRendSurface->buffer + x + psRendSurface->scantable[y];
lineSkip = psRendSurface->width - w;
for (i=0; i<h; i++)
{
for (j=0; j<w; j++)
{
present = *bmp++;
if(present)
{
*bp = aTransTable3[present]; // Write in the new version (blue tinted)
}
bp++;
}
bmp += (ow - w);
bp += lineSkip;
}
}
void pie_RenderDeepBlueTintedBitmap(iBitmap *bmp, int x, int y, int w, int h, int ow)
{
int i, j, lineSkip;
Uint8 *bp;
Uint8 present;
bp = (Uint8 *) psRendSurface->buffer + x + psRendSurface->scantable[y];
lineSkip = psRendSurface->width - w;
for (i=0; i<h; i++)
{
for (j=0; j<w; j++)
{
present = *bmp++;
if(present)
{
*bp = aTransTable4[present]; // Write in the new version (blue tinted)
}
bp++;
}
bmp += (ow - w);
bp += lineSkip;
}
}
void pie_DrawText270(char *String,int XPos,int YPos)
{
int Index;
UWORD ImageID;
IVIS_FONT *Font = &iVFonts[ActiveFontID];
YPos += iV_GetImageWidth(Font->FontFile,(UWORD)Font->AsciiTable[33]) + 1;
pie_BeginTextRender(Font->FontColourIndex);
while (*String!=0)
{
Index = *String;
if (Index != ASCII_SPACE) {
ImageID = (UWORD)Font->AsciiTable[Index];
pie_TextRender270(Font->FontFile,ImageID,XPos,YPos);
YPos -= (iV_GetImageWidth(Font->FontFile,ImageID) +1) ;
} else {
YPos -= (Font->FontSpaceSize);
}
String++;
}
}
void pie_BeginTextRender(SWORD ColourIndex)
{
TextColourIndex = ColourIndex;
pie_SetRendMode(REND_TEXT);
pie_SetBilinear(FALSE);
}
void pie_TextRender(IMAGEFILE *ImageFile,UWORD ID,int x,int y)
{
UDWORD Red;
UDWORD Green;
UDWORD Blue;
UDWORD Alpha = MAX_UB_LIGHT;
iColour* psPalette;
if ((TextColourIndex == PIE_TEXT_WHITE) || (TextColourIndex == 255)) {
pie_SetColour(MAX_LIGHT);
} else {
if (TextColourIndex == PIE_TEXT_WHITE) {
pie_SetColour(PIE_TEXT_WHITE_COLOUR);
} else if (TextColourIndex == PIE_TEXT_LIGHTBLUE) {
pie_SetColour(PIE_TEXT_LIGHTBLUE_COLOUR);
} else if (TextColourIndex == PIE_TEXT_DARKBLUE) {
pie_SetColour(PIE_TEXT_DARKBLUE_COLOUR);
} else {
psPalette = pie_GetGamePal();
Red = psPalette[TextColourIndex].r;
Green= psPalette[TextColourIndex].g;
Blue = psPalette[TextColourIndex].b;
pie_SetColour(((Alpha<<24) | (Red<<16) | (Green<<8) | Blue));
}
}
pie_SetColourKeyedBlack(TRUE);
pie_DrawImageFileID(ImageFile,ID,x,y);
pie_SetColourKeyedBlack(FALSE);
}
static void pie_TextRender270(IMAGEFILE *ImageFile, UWORD ImageID, int x, int y)
{
UDWORD Red;
UDWORD Green;
UDWORD Blue;
UDWORD Alpha = MAX_UB_LIGHT;
IMAGEDEF *Image;
PIEIMAGE pieImage;
PIERECT dest;
iColour* psPalette;
Image = &(ImageFile->ImageDefs[ImageID]);
//not coloured yet
if (TextColourIndex == PIE_TEXT_WHITE) {
pie_SetColour(PIE_TEXT_WHITE_COLOUR & 0x80ffffff);//special case semi transparent for rotated text
} else if (TextColourIndex == PIE_TEXT_LIGHTBLUE) {
pie_SetColour(PIE_TEXT_LIGHTBLUE_COLOUR);
} else if (TextColourIndex == PIE_TEXT_DARKBLUE) {
pie_SetColour(PIE_TEXT_DARKBLUE_COLOUR);
} else {
psPalette = pie_GetGamePal();
Red = psPalette[TextColourIndex].r;
Green= psPalette[TextColourIndex].g;
Blue = psPalette[TextColourIndex].b;
pie_SetColour(((Alpha<<24) | (Red<<16) | (Green<<8) | Blue));
}
pie_SetRendMode(REND_ALPHA_TEXT);
pieImage.texPage = ImageFile->TPageIDs[Image->TPageID];
pieImage.tu = Image->Tu;
pieImage.tv = Image->Tv;
pieImage.tw = Image->Width;
pieImage.th = Image->Height;
dest.x = x+Image->YOffset;
dest.y = y+Image->XOffset - Image->Width;
dest.w = Image->Width;
dest.h = Image->Height;
pie_SetColourKeyedBlack(TRUE);
pie_DrawImage270( &pieImage, &dest );
pie_SetColourKeyedBlack(FALSE);
}
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