Get the attributes of a PtMultiText widget
PtMultiTextAttributes_t * PtMultiTextGetAttributes( PtWidget_t *widget, int char_offset, PtMultiTextAttributes_t *attributes, int *start, int *end );
This function sets the provided PtMultiTextAttributes_t structure to the attributes found at char_offset.
If you provide the integers for start and end, the function sets these parameters to the character offsets that mark the beginning and end of the segment that contains char_offset. Both start and end are 0-based. So, for example, if *start is set to 0, it indicates the first character in the widget's text buffer.
A pointer to the provided PtMultiTextAttributes_t structure, or NULL if the specified widget is NULL or isn't a PtMultiText widget.
/* Standard headers */ #include <stdio.h> #include <stdlib.h> #include <unistd.h> #include <string.h> /* Toolkit headers */ #include <Ph.h> #include <Pt.h> #include <Ap.h> /* Local headers */ #include "editor.h" #include "abimport.h" #include "proto.h" int save( PtWidget_t *widget, ApInfo_t *apinfo, PtCallbackInfo_t *cbinfo ) { PtArg_t argt; FILE *fp; char *text; PtMultiTextAttributes_t attrs; int start = 0, end = 0, len; if( !(fp = fopen( "notepad", "w" ) ) ) return Pt_CONTINUE; PtSetArg( &argt, Pt_ARG_TEXT_STRING, &text, 0 ); PtGetResources( ABW_text, 1, &argt ); len = strlen( text ) + 1; fwrite( &len, sizeof( len ), 1, fp ); fwrite( text, len, 1, fp ); PtMultiTextGetAttributes( ABW_text, start, &attrs, NULL, &end ); while( end > start ) { fwrite( &start, sizeof( start ), 1, fp); fwrite( &end, sizeof( end ), 1, fp); fwrite( &attrs, sizeof( attrs ), 1, fp ); if( attrs.font ) { len = strlen( attrs.font ) +1; fwrite( &len, sizeof( len ), 1, fp ); fwrite( attrs.font, len, 1, fp ); } start = end; PtMultiTextGetAttributes( ABW_text, start, &attrs, NULL, &end ); } fclose( fp ); widget = widget, apinfo = apinfo, cbinfo = cbinfo; return Pt_CONTINUE; } int load( PtWidget_t *widget, ApInfo_t *apinfo, PtCallbackInfo_t *cbinfo ) { PtArg_t argt; FILE *fp; char *text; PtMultiTextAttributes_t attrs; int start = -1, end = 0, len; if( !(fp = fopen( "notepad", "r" ) ) ) return Pt_CONTINUE; fread( &len, sizeof( len ), 1, fp ); if( !( text = (char *) malloc( len ) ) ) return Pt_CONTINUE; fread( text, len, 1, fp ); PtSetArg( &argt, Pt_ARG_TEXT_STRING, text, 0 ); PtSetResources( ABW_text, 1, &argt ); free( text ); while( fread( &start, sizeof( start ), 1, fp ) ) { fread( &end, sizeof( end ), 1, fp ); fread( &attrs, sizeof( attrs ), 1, fp ); if( attrs.font ) { fread( &len, sizeof( len ), 1, fp ); attrs.font = (char *) malloc( len ); fread( attrs.font, len, 1, fp ); } PtMultiTextModifyAttributes( ABW_text, start, end, &attrs, -1 ); if( attrs.font ) free( attrs.font ); } fclose( fp ); widget = widget, apinfo = apinfo, cbinfo = cbinfo; return Pt_CONTINUE; }
Photon
Safety: | |
---|---|
Interrupt handler | No |
Signal handler | No |
Thread | No |
PtMultiTextCreateAttributes(), PtTextGetSelection(), PtTextModifyText(), PtTextSetSelection(), PtMultiTextAttributes_t