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/************************************************************************/
/* */
/* Common resources used by Rulers. */
/* */
/************************************************************************/
# include "appFrameConfig.h"
# include <stdio.h>
# include <string.h>
# define y0 math_y0
# define y1 math_y1
# include <math.h>
# undef y0
# undef y1
# include <appUnit.h>
# include <appRuler.h>
# include <appDebugon.h>
# ifndef M_LN10
# define M_LN10 2.30258509299404568402
# endif
void appInitRulerData( RulerData * rd )
{
rd->rdFontName= (const char *)0;
rd->rdSizeAcross= 0;
rd->rdSizeAlong= 0;
rd->rdFontHeight= 0;
rd->rdMinUsed= 0;
rd->rdMaxUsed= 0;
rd->rdExtraAfterMaxUsed= 0;
rd->rdDocumentC0= 0;
rd->rdDocumentC1= 0;
rd->rdVisibleC0= 0;
rd->rdVisibleC1= 0;
rd->rdRulerC1= 0;
rd->rdFontStruct= (APP_FONT *)0;
appInitVerticalXFont( &(rd->rdVerticalFont) );
appInitDrawingData( &(rd->rdDrawingData) );
rd->rdDrawingDataAllocated= 0;
# ifdef USE_MOTIF
rd->rdBackStipple= None;
# endif
return;
}
void appCleanRulerData( RulerData * rd )
{
if ( rd->rdFontStruct )
{ appDrawFreeFont( &(rd->rdDrawingData), rd->rdFontStruct ); }
appCleanVerticalXFont( &(rd->rdVerticalFont), &(rd->rdDrawingData) );
# ifdef USE_MOTIF
if ( rd->rdBackStipple )
{
XFreePixmap( rd->rdDrawingData.addDisplay, rd->rdBackStipple );
}
# endif
appCleanDrawingData( &(rd->rdDrawingData) );
return;
}
void appRulerDrawBackground( RulerData * rd,
int x,
int y,
int wide,
int high )
{
AppDrawingData * add= &(rd->rdDrawingData);
appDrawSetForegroundColor( add, &(add->addBackColor) );
# ifdef USE_MOTIF
if ( rd->rdBackStipple )
{ XSetFillStyle( add->addDisplay, add->addGc, FillStippled ); }
# endif
appDrawFillRectangle( add, x, y, wide, high );
# ifdef USE_MOTIF
if ( rd->rdBackStipple )
{ XSetFillStyle( add->addDisplay, add->addGc, FillSolid ); }
# endif
return;
}
void appRulerAllocateDrawingData( RulerData * rd,
int vertical,
int fontHeight,
double magnification,
APP_WIDGET w )
{
AppDrawingData * add= &(rd->rdDrawingData);
char name[128];
rd->rdFontHeight= fontHeight;
if ( appSetDrawingDataForWidget( w, magnification, add ) )
{ LDEB(1); }
# ifdef USE_MOTIF
XSetLineAttributes( add->addDisplay, add->addGc,
1, LineSolid, CapProjecting, JoinMiter );
# endif
# ifdef USE_GTK
gdk_gc_set_line_attributes( add->addGc,
1, GDK_LINE_SOLID, GDK_CAP_PROJECTING, GDK_JOIN_MITER );
# endif
if ( rd->rdFontName )
{
sprintf( name, rd->rdFontName, fontHeight );
rd->rdFontStruct= appDrawOpenFont( add, name );
}
else{ strcpy( name, "(None)" ); }
if ( ! rd->rdFontStruct )
{
SXDEB(name,rd->rdFontStruct);
sprintf( name, "-*-*-medium-r-*-*-%d-*-*-*-m-*-iso8859-*",
fontHeight );
rd->rdFontStruct= appDrawOpenFont( add, name );
}
if ( vertical &&
rd->rdFontStruct &&
appOpenVerticalXFont( &(rd->rdVerticalFont), add, name, -1,
&(add->addBackColor) ) )
{ SDEB(name); }
if ( rd->rdFontStruct )
{ appDrawSetFont( add, rd->rdFontStruct ); }
else{ SXDEB(name,rd->rdFontStruct); }
# ifdef USE_MOTIF
if ( DefaultDepth( add->addDisplay, add->addScreen ) <= 2 )
{
int i;
for ( i= 0; i < 16; i++ )
{
memset( name+ 8* i+ 0, 0xaa, 4 );
memset( name+ 8* i+ 4, 0x55, 4 );
}
rd->rdBackStipple= XCreateBitmapFromData( add->addDisplay,
add->addDrawable, name, 32, 32 );
if ( ! rd->rdBackStipple )
{ XDEB(rd->rdBackStipple); }
appDrawBlackColor( add, &(add->addBackColor) );
XSetStipple( add->addDisplay, add->addGc, rd->rdBackStipple );
}
# endif
rd->rdDrawingDataAllocated= 1;
return;
}
int appRulerTextWidth( RulerData * rd,
const char * s,
int len )
{
if ( rd->rdFontStruct )
{
AppDrawingData * add= &(rd->rdDrawingData);
int wide;
int fontAscent;
int fontDescent;
appDrawTextExtents( &wide, &fontAscent, &fontDescent, add,
rd->rdFontStruct, s, len );
return wide;
}
else{ return (6*rd->rdFontHeight*len)/10; }
}
void appRulerDrawVerticalString( RulerData * rd,
int x,
int y,
char * s,
int len )
{
AppDrawingData * add= &(rd->rdDrawingData);
appDrawVerticalString( &(rd->rdVerticalFont), add, x, y, s, len );
return;
}
/************************************************************************/
/* */
/* Calculate suitable distances for Texts, tags, ticks */
/* */
/* unitsPerTick= unitsPerTag/ticksPerTag; */
/* screenUnitsPerTick= unitsPerTick* magnification. */
/* pixelsPerTick= FAC* screenUnitsPerTick. */
/* */
/************************************************************************/
static double appRulerPerItem( double unitsPerItem )
{
double aa;
double bb;
aa= log( unitsPerItem )/ M_LN10;
bb= (int)( aa+ 20 )- 20;
if ( aa- bb > log( 5.0 )/ M_LN10 )
{ aa= bb+ 1; }
else{
if ( aa- bb > log( 2.0 )/ M_LN10 )
{ aa= bb+ log( 5.0 )/ M_LN10; }
else{
if ( aa- bb > 0.0 )
{ aa= bb+ log( 2.0 )/ M_LN10; }
}
}
return exp( M_LN10* aa );
}
void appRulerCalculateIncrements( RulerData * rd,
double magnifiedPixelsPerTwip,
double magnification )
{
double mmPerUnit;
double unitsPerText;
double unitsPerTag;
double unitsPerTick;
int tagsPerText;
switch( rd->rdUnit )
{
case UNITtyMM: mmPerUnit= 1.0; break;
case UNITtyCM: mmPerUnit= 10.0; break;
case UNITtyINCH: mmPerUnit= 24.4; break;
case UNITtyPOINTS: mmPerUnit= 25.4/ 72.0; break;
case UNITtyPICAS: mmPerUnit= 25.4/ 6.0; break;
default:
LDEB(rd->rdUnit);
rd->rdUnit= UNITtyMM;
mmPerUnit= 1.0;
break;
}
rd->rdTwipsPerUnit= appUnitToTwips( 1.0, rd->rdUnit );
rd->rdMagnifiedPixelsPerTwip= magnifiedPixelsPerTwip;
unitsPerText= appRulerPerItem( ( 30.0/ mmPerUnit )/ magnification );
unitsPerTag= appRulerPerItem( ( 8.0/ mmPerUnit )/ magnification );
unitsPerTick= appRulerPerItem( ( 3.0/ mmPerUnit )/ magnification );
tagsPerText= unitsPerText/ unitsPerTag+ 0.49;
rd->rdTicksPerTag= unitsPerTag/ unitsPerTick+ 0.49;
rd->rdTicksPerText= tagsPerText* rd->rdTicksPerTag;
rd->rdUnitsPerTick= unitsPerText/ rd->rdTicksPerText;
return;
}
void appRulerTagText( char * to,
int * pWide,
int * pLen,
RulerData * rd,
double units )
{
char scratch[30];
char * s;
int wide;
int len;
sprintf ( scratch, "%12.3g", units );
s= scratch; while( *s == ' ' ) { s++; }
len= strlen( s );
wide= appRulerTextWidth( rd, s, len );
strcpy( to, s ); *pWide= wide; *pLen= len;
return;
}
void appScrollHorizontalRuler( RulerData * rd,
DocumentRectangle * drClip,
int d )
{
int wide= rd->rdMaxUsed+ 1;
int high= rd->rdSizeAcross;
AppDrawingData * add= &(rd->rdDrawingData);
int x0;
rd->rdVisibleC0 += d;
rd->rdVisibleC1 += d;
x0= rd->rdMinUsed;
drClip->drY0= 0;
drClip->drY1= high;
if ( d > 0 )
{
if ( wide > d )
{
appDrawMoveArea( add, d+ x0, 0, wide- d- x0, high, x0, 0 );
drClip->drX0= rd->rdVisibleC1- d;
drClip->drX1= rd->rdVisibleC1;
}
else{
drClip->drX0= rd->rdVisibleC0;
drClip->drX1= rd->rdVisibleC1;
}
}
else{
if ( high+ d > 0 )
{
appDrawMoveArea( add, x0, 0, wide+ d- x0, high, x0- d, 0 );
drClip->drX0= rd->rdVisibleC0;
drClip->drX1= rd->rdVisibleC0- d;
}
else{
drClip->drX0= rd->rdVisibleC0;
drClip->drX1= rd->rdVisibleC1;
}
}
return;
}
void appScrollVerticalRuler( RulerData * rd,
DocumentRectangle * drClip,
int d )
{
int high= rd->rdMaxUsed+ 1;
int wide= rd->rdSizeAcross;
AppDrawingData * add= &(rd->rdDrawingData);
int y0;
rd->rdVisibleC0 += d;
rd->rdVisibleC1 += d;
y0= rd->rdMinUsed;
drClip->drX0= 0;
drClip->drX1= wide;
if ( d > 0 )
{
if ( high > d )
{
appDrawMoveArea( add, 0, d+ y0, wide, high- d- y0, 0, y0 );
drClip->drY0= rd->rdVisibleC1- d;
drClip->drY1= rd->rdVisibleC1;
}
else{
drClip->drY0= rd->rdVisibleC0;
drClip->drY1= rd->rdVisibleC1;
}
}
else{
if ( high+ d > 0 )
{
appDrawMoveArea( add, 0, y0, wide, high+ d- y0, 0, y0- d );
drClip->drY0= rd->rdVisibleC0;
drClip->drY1= rd->rdVisibleC0- d;
}
else{
drClip->drY0= rd->rdVisibleC0;
drClip->drY1= rd->rdVisibleC1;
}
}
return;
}
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