Home Conference 2005 Order Boxed Set Product Download VU Training FAQ Press and News Docs and Papers Partner Help Team     register/help User Name: Password: Login	Otxtlist.cpp Go to the documentation of this file. //Filename : OTXTLIST.CPP //Description : Object text list // owner : chwg 1015 #include <OVGA.H> #include <OSYS.H> #include <OFONT.H> #include <OINFO.H> #include <OMOUSE.H> #include <OVBROW98.H> #include <OSCROLL.H> #include <OTXTLIST.H> #include <OIFACE.H> //-------- Define macro constant ----------// #define SCROLL_BAR_WIDTH 15 #define TEXT_LINE_SPACE 6 #define TEXT_MARGIN 20 //--------- Define static varaibles --------// static ScrollBar scroll_bar; static TxtList* cur_txt_list_ptr; // for static function static VBrowse98 topic_browse; // ##### begin Gilbert 19/04/2001 ###### // static short * txtlist_refresh_bitmap = NULL; // ##### end Gilbert 19/04/2001 ###### // static void disp_topic_rec(int,int,int,int); static void disp_idx_topic_rec(int,int,int,int); //--------- Begin of function TxtList::TxtList ---------// TxtList::TxtList() { init_flag = 0; init_pict_flag = 0; init_list_flag = 0; history_pos = 0; can_back=0; top_line=1; memset( history_array, 0, sizeof(history_array[0]) * HISTORY_SIZE ); } //----------- End of function TxtList::TxtList ---------// //---------- Begin of function TxtList::init -------// void TxtList::init(int x1, int y1, int x2, int y2, char* resTxtName) { text_x1 = x1; text_y1 = y1; text_x2 = x2-SCROLL_BAR_WIDTH-4; // space + scroll bar width text_y2 = y2; scroll_x1 = x2-SCROLL_BAR_WIDTH+1; scroll_y1 = y1; scroll_x2 = x2; scroll_y2 = y2; res_txt.init( resTxtName, 0 ); // 0-don't always open the file, only open it during reading, save file handle if(topic_id < 1) topic_id=1; // default topic id. init_flag = 1; } //---------- End of function TxtList::init -------// //-------- Begin of function TxtList::deinit -------// void TxtList::deinit() { res_txt .deinit(); res_pict.deinit(); if(txtlist_refresh_bitmap) mem_del(txtlist_refresh_bitmap); txtlist_refresh_bitmap=NULL; } //---------- End of function TxtList::deinit -------// //---------- Begin of function TxtList::init_pict -------// void TxtList::init_pict(int x1, int y1, int x2, int y2, char* resPictName) { pict_x1 = x1; pict_y1 = y1; pict_x2 = x2; pict_y2 = y2; res_pict.init( resPictName, 0 ); init_pict_flag = 1; } //---------- End of function TxtList::init_pict -------// //---------- Begin of function TxtList::init_list -------// void TxtList::init_list(int x1, int y1, int x2, int y2) { list_x1 = x1; list_y1 = y1; list_x2 = x2; list_y2 = y2; init_list_flag = 1; top_line=1; } //---------- End of function TxtList::init_list -------// //------- Begin of function TxtList::disp -------// void TxtList::disp(int refreshFlag, int topicId) { vga.use_back(); err_when( !init_flag ); //-------- display a new topic ----------// char* textPtr; if( topicId ) topic_id = topicId; //------------ paint panel --------------// if(init_list_flag) { if( refreshFlag==INFO_REPAINT ) { user_interface.brighten( list_x1, list_y1, list_x2, list_y2 ); user_interface.rect( list_x1, list_y1, list_x2, list_y2 ); // if( init_pict_flag ) // vga.active_buf->d3_panel_down( pict_x1, pict_y1, pict_x2, pict_y2, 2, 0 ); cur_txt_list_ptr = this; // for static rec display function's reference topic_browse.init( list_x1, list_y1, list_x2, list_y2, 0, 20, res_txt.rec_count, disp_topic_rec ); topic_browse.open(topic_id); } // topic_browse.update(); } if(!init_list_flag) { if( refreshFlag==INFO_REPAINT ) { user_interface.rect( text_x1, text_y1, text_x2, text_y2 ); user_interface.brighten( text_x1, text_y1, text_x2, text_y2 ); if( init_pict_flag ) vga.active_buf->d3_panel_down( pict_x1, pict_y1, pict_x2, pict_y2, 2, 0 ); cur_txt_list_ptr = this; // for static rec display function's reference txtlist_refresh_bitmap=vga_back.save_area( text_x1,text_y1,text_x2,text_y2, txtlist_refresh_bitmap); } //------------ retrieve topic ------------// vga_back.rest_area(txtlist_refresh_bitmap,0,1); if(topicId && refreshFlag==INFO_REPAINT ) { // topicId can be NULL, while INFO_REPAINT // top_line=1; textPtr = res_txt.get_body(topic_id); //-------- count the no. of lines of the text --------// int dispLines; // no. of lines can be displayed on the area int totalLines; // total no. of lines of the text font_letter.count_line( text_x1+TEXT_MARGIN, text_y1+TEXT_MARGIN, text_x2-TEXT_MARGIN+2, text_y2-TEXT_MARGIN, textPtr, TEXT_LINE_SPACE, dispLines, totalLines ); //-------- display scroll bar ------// scroll_bar.init( 1, scroll_x1, scroll_y1, scroll_x2, scroll_y2, dispLines, dispLines, totalLines ); scroll_bar.paint(); scroll_bar.refresh(top_line,1); } else { // redisplay current topic, only scroll to a different part of the text textPtr = res_txt.get_body(topic_id); } font_letter.put_paragraph( text_x1+TEXT_MARGIN, text_y1+TEXT_MARGIN, text_x2-TEXT_MARGIN+2, text_y2-TEXT_MARGIN, textPtr, TEXT_LINE_SPACE, top_line ); if( init_pict_flag ) { char* pictName = res_txt.get_pict_name(topic_id); if( pictName[0] ) { char* pictPtr = res_pict.read(pictName); if( pictPtr ) vga.active_buf->put_bitmap( pict_x1+2, pict_y1+2, pictPtr ); } } vga.blt_buf( text_x1, text_y1, text_x2, text_y2 ); } //--------- display text body ----------// } //-------- End of function TxtList::disp -------// //-------- Begin of function TxtList::add_history -----------// void TxtList::add_history(int topicId) { /* can_back=(history_array[history_pos]>0); if( ++history_pos >= HISTORY_SIZE ) history_pos = 0; history_array[history_pos] = topicId; */ int next_pos=((history_pos+1)>=HISTORY_SIZE)?0:history_pos+1; int prev_pos=((history_pos-1)<0)?HISTORY_SIZE-1:history_pos-1; // do nothing if same history idx is added. // chwg ##1215 if(history_array[prev_pos]==topicId) return; if(history_array[history_pos]!=0) { history_array[next_pos]=0; } history_array[history_pos] = topicId; can_back=(history_array[(((prev_pos)<0)?HISTORY_SIZE-1:prev_pos)]>0);; history_pos = next_pos; } //----------- End of function TxtList::add_history -----------// //-------- Begin of function TxtList::back_history -----------// void TxtList::back_history() { /* history_array[history_pos]=0; // the history just added is useless if((history_pos-1) < 0 ) history_pos = HISTORY_SIZE; int topicId = history_array[--history_pos]; if( topicId>0 ) // if topicId==0, means no history { history_array[history_pos] = 0; can_back=(history_array[(((history_pos-1)<0)?HISTORY_SIZE-1:history_pos-1)]>0); disp( INFO_UPDATE, topicId ); if( init_list_flag ) topic_browse.refresh( topicId ); } */ int prev_pos=history_pos; do { prev_pos--; prev_pos=(prev_pos<0)?HISTORY_SIZE-1:prev_pos; } while(history_array[prev_pos]==topic_id && history_array[prev_pos]!=0); int topicId = history_array[prev_pos]; if( topicId>0 ) { // if topicId==0, means no history history_array[prev_pos] = 0; history_pos = prev_pos; disp( INFO_UPDATE, topicId ); if( init_list_flag ) topic_browse.refresh( topicId ); can_back=(history_array[(((prev_pos-1)<0)?HISTORY_SIZE-1:prev_pos-1)]>0); } } //----------- End of function TxtList::back_history -----------// //------- Begin of function TxtList::detect -------// int TxtList::detect() { int rc; //------- detect topic list list ----------// // vga.use_front(); // select new topic if( init_list_flag && (rc=topic_browse.detect()) > 0 ) { double_clicked=topic_browse.double_click; topic_id=rc; sys.redraw_all_flag=1; // disp(INFO_UPDATE, rc); return 1; } if(!init_list_flag) { if( (rc=scroll_bar.detect()) > 0 ) { //-------- detect text scroll bar ----------// top_line = rc; sys.redraw_all_flag=1; disp(INFO_UPDATE); return 1; //------- detect on text body ---------// } if( detect_text() ) return 1; } return 0; } //------- Begin of function TxtList::detect_text -------// int TxtList::detect_text() { //------- if mouse pressed on text area ------// //-- can pressed on hyper-texted field or just fast scrolling --// if( !mouse.single_click( text_x1, text_y1, text_x2, text_y2 ) ) return 0; //---- detect hyper-texted field ------// int i, topicId; char saveChar; HyperField* hyperField = font_letter.hyper_field_array; for( i=0 ; i<font_letter.hyper_field_count ; i++, hyperField++ ) { if( mouse.click_x() >= hyperField->x1 && mouse.click_x() <= hyperField->x2 && mouse.click_y() >= hyperField->y1 && mouse.click_y() <= hyperField->y2 ) { err_when( hyperField->text_len > TxtIndex::TITLE_LEN ); saveChar = hyperField->text_ptr[hyperField->text_len]; hyperField->text_ptr[hyperField->text_len] = NULL; topicId = res_txt.locate_topic(hyperField->text_ptr); hyperField->text_ptr[hyperField->text_len] = saveChar; if( topicId ) { add_history(topic_id); // add current topic id to the history disp(INFO_UPDATE, topicId); sys.redraw_all_flag=1; if( init_list_flag ) topic_browse.refresh( topicId ); return 1; } } } //------ detect fast scrolling --------// if( mouse.click_y() < text_y1 + (text_y2-text_y1) / 2 ) top_line = scroll_bar.page_up(1); // page up, 1 = skip less one line, so when scrolling text, want the last line of previous page be the first line of current page, then pass 1 as skipLess else top_line = scroll_bar.page_down(1); // page down disp(INFO_UPDATE); return 1; } //-------- Begin of function TxtList::detect_text -------// //-------- Begin of static function disp_topic_rec -----------// // static void disp_topic_rec(int recNo, int x, int y, int refreshFlag) { if( refreshFlag == INFO_REPAINT ) font_letter.put( x+10, y, cur_txt_list_ptr->res_txt.get_title(recNo) ); } //----------- End of static function disp_topic_rec -----------//
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