Dave Van Wagner
Bible eBook Prototype More details at: http://mbed.org/users/davervw/notebook/ebible-abstract/
Dependencies: SDHCFileSystem TextLCD mbed BibleIO
Diff: BibleUI.cpp
- Revision:
- 0:b9d9145827e2
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/BibleUI.cpp Sun Feb 27 18:54:37 2011 +0000
@@ -0,0 +1,621 @@
+/* Bible UI Class Implementation - KJV Bible eBook Browser
+ *
+ * Copyright (c) 2011 David R. Van Wagner davervw@yahoo.com
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include "BibleUI.h"
+
+//extern Serial console;
+
+BibleUI::BibleUI(BibleIO &bible, TextLCD &textlcd, DigitalIn& left, DigitalIn& right)
+ :HolyBible(bible), lcd(textlcd), lb(left), rb(right), led1(LED1), led2(LED2), led3(LED3), led4(LED4)
+{
+ //console.printf("\n\n" "Bible LCD\n\n");
+ lcd.cls();
+ lcd.printf("BibleLCD");
+
+ wait(0.5);
+
+ show_title();
+
+ book = 0;
+ chapter = 0;
+ verse = 0;
+ offset = 0;
+ disp_len = 0;
+}
+
+void BibleUI::start()
+{
+ main();
+}
+
+void BibleUI::display_nav()
+{
+ lcd.cls();
+ char* book_name = HolyBible.title_book(book);
+ if (strlen(book_name) >= lcd.columns())
+ book_name[lcd.columns()] = 0;
+ lcd.printf("%s%s%d:%d", book_name, strlen(book_name)==lcd.columns()?"":"\n", chapter+1, verse+1);
+ //console.printf("%s %d:%d", abbrev, chapter+1, verse+1);
+ delete [] book_name;
+}
+
+bool BibleUI::append_next_verse(char*& text, short len, short book, short chapter, short verse)
+{
+ int size = 0;
+ do
+ {
+ // get next verse
+ char* next_verse = HolyBible.text_verse(book, chapter, ++verse);
+ if (next_verse == 0)
+ return size>0; // stop at end of chapter, return true if text has lengthened at all
+ size += strlen(next_verse);
+
+ // combine
+ char* new_verse = new char[strlen(text)+strlen(next_verse)+2]; // add room for space delimiter and nul
+ strcpy(new_verse, text);
+ strcat(new_verse, " ");
+ strcat(new_verse, next_verse);
+ delete [] text;
+ delete [] next_verse;
+ text = new_verse;
+ } while (size < len); // repeat until enough characters added
+
+ return size>0;
+}
+
+void BibleUI::display_verse()
+{
+ // fix positioning, check ranges
+ char* text = 0;
+ if (offset < 0)
+ {
+ if (offset > -lcd.rows()*lcd.columns())
+ offset = 0; // be sure to show beginning of verse
+ else
+ {
+ if (verse > 0) // previous verse
+ --verse;
+ else
+ {
+ if (chapter > 0) // last verse in previous chapter
+ {
+ --chapter;
+ verse = HolyBible.get_num_verses(book, chapter)-1;
+ }
+ else if (book > 0) // last verse in previous book
+ {
+ --book;
+ chapter = HolyBible.get_num_chapters(book)-1;
+ verse = HolyBible.get_num_verses(book, chapter)-1;
+ }
+ else //end of bible
+ {
+ book = HolyBible.get_num_books() - 1;
+ chapter = HolyBible.get_num_chapters(book)-1;
+ verse = HolyBible.get_num_verses(book, chapter)-1;
+ }
+ display_nav();
+ wait(0.5);
+ }
+ }
+ text = HolyBible.text_verse(book, chapter, verse);
+ if (offset < 0)
+ {
+ int len = strlen(text);
+ if (len > lcd.rows()*lcd.columns())
+ offset = len-lcd.rows()*lcd.columns();
+ else
+ offset = 0;
+ }
+ }
+ else
+ text = HolyBible.text_verse(book, chapter, verse);
+ if (offset == 0)
+ {
+ char* text_start = strchr(text, ' ');
+ //console.printf("%s\n", text_start);
+ }
+ if (offset >= strlen(text))
+ {
+ offset = 0;
+ delete [] text;
+ text = HolyBible.text_verse(book, chapter, ++verse); // next verse
+ if (text == 0)
+ {
+ text = HolyBible.text_verse(book, ++chapter, verse=0); // next chapter
+ if (text == 0)
+ text = HolyBible.text_verse(++book, chapter=0, verse=0); // next book
+ if (text == 0)
+ text = HolyBible.text_verse(book=0, chapter=0, verse=0); // end
+ display_nav();
+ wait(0.5);
+ }
+ }
+
+ // append enough text to fill screen and then some
+ append_next_verse(text, lcd.rows()*(lcd.columns()+1), book, chapter, verse);
+
+ // find current position within verse(s)
+ char* verse_text = text + offset;
+
+ // make a copy starting at offset so it can be modified
+ char* copy = new char[strlen(verse_text)+1];
+ strcpy(copy, verse_text);
+ delete [] text; // note: text was allocated, verse_text was just pointed into it
+ text = 0;
+ verse_text = 0;
+
+ // word wrap
+ disp_len = word_wrap(copy);
+ /*
+ if (strlen(copy) > lcd.rows()*lcd.columns())
+ copy[lcd.rows()*lcd.columns()] = 0;
+ disp_len = strlen(copy);
+ */
+
+ // display
+ lcd.locate(0, 0);
+ lcd.printf("%s", copy);
+
+ // pad with spaces (avoids cls which can cause some flashing)
+ int max_len = lcd.rows()*lcd.columns();
+ for (int i=strlen(copy); i<max_len; ++i)
+ lcd.printf(" ");
+
+ // free up storage
+ delete [] copy;
+ copy = 0;
+}
+
+static bool alphanumeric(char c)
+{
+ return c >= '0' && c <= '9'
+ || c >= 'A' && c <= 'Z'
+ || c >= 'a' && c <= 'z';
+}
+
+static bool punc_or_space(char c)
+{
+ return !alphanumeric(c);
+}
+
+int BibleUI::word_wrap(char* &text)
+{
+ // make copy of original text for later comparison
+ char* orig = new char[strlen(text)+1];
+ strcpy(orig, text);
+
+ // remove unwanted strings
+ remove_string(text, "# ");
+ remove_string(text, "[");
+ remove_string(text, "]");
+
+ // scan each line
+ for (int row=0; row<lcd.rows(); ++row)
+ {
+ int start = row * lcd.columns();
+ int end = start + lcd.columns();
+
+ // remove spaces at start of line
+ while (start < strlen(text) && text[start]==' ')
+ {
+ // delete one character
+ int left = start;
+ int right = strlen(text+left+1);
+ char* new_text = new char[left+right+1];
+ memcpy(new_text, text, left);
+ new_text[left] = 0;
+ strcat(new_text, text+left+1);
+ delete [] text;
+ text = new_text;
+ }
+
+ // insert spaces to wrap words
+ if (strlen(text) > end && !punc_or_space(text[end]))
+ {
+ int left;
+ for (left=end-1; left>=start && !punc_or_space(text[left]); --left)
+ ;
+ if (left > start && left < end)
+ {
+ ++left;
+ int right=strlen(text+left);
+ int spaces=end-left;
+ //printf("row=%d total=%d left=%d spaces=%d right=%d\n", row, strlen(text), left, spaces, right);
+ char* new_text = new char[left+spaces+right+1];
+ memcpy(new_text, text, left);
+ new_text[left] = 0;
+ for (int i=0; i<spaces; ++i)
+ strcat(new_text, " ");
+ strcat(new_text, text+left);
+ delete [] text;
+ text = new_text;
+ }
+ }
+ }
+
+ // truncate to screen size
+ int max_len = lcd.rows()*lcd.columns();
+ if (strlen(text)>=max_len)
+ text[max_len] = 0;
+
+ // make copy with non-spaces
+ char* nospaces = new char[strlen(text)+1];
+ int len = 0;
+ for (int i=0; i<strlen(text); ++i)
+ if (text[i] != ' ')
+ nospaces[len++] = text[i];
+ nospaces[len] = 0;
+
+ // calculate the number of characters displayed
+ int src=0;
+ for (int dest=0; dest<len; ++dest)
+ {
+ // non-space character must be there, advance in original until find it
+ while (orig[src++] != nospaces[dest])
+ ;
+ }
+
+ // free up storage
+ delete [] nospaces;
+ nospaces = 0;
+ delete [] orig;
+ orig = 0;
+
+ // return length of source string that matches wrapped text, so know how to advance to next portion of verse
+ return src;
+}
+
+void BibleUI::remove_string(char* &text, char* find)
+{
+ while (true)
+ {
+ char* p = strstr(text, find);
+ if (p == 0)
+ return;
+ int left = p-text;
+ int right = strlen(p+strlen(find));
+ char* new_text = new char[left+right+1];
+ memcpy(new_text, text, left);
+ new_text[left] = 0;
+ strcat(new_text, p+strlen(find));
+ delete [] text;
+ text = new_text;
+ }
+}
+
+void BibleUI::show_title()
+{
+ lcd.cls();
+ char* title = HolyBible.title();
+ lcd.printf("%s", title);
+ //console.printf("%s\n", title);
+ delete [] title;
+ title = 0;
+}
+
+void BibleUI::main()
+{
+ enum emode { MODE_OFFSET=0, MODE_VERSE=1, MODE_CHAPTER=2, MODE_BOOK=3, MODE_4xBOOK=4, MODE_BOOKMARK=5 };
+
+ emode mode = MODE_OFFSET;
+
+ display_nav();
+ wait(0.5);
+ display_verse();
+
+ // debug: display all text
+ /*
+ int last_book = book;
+ int pages = -1;
+ while (book >= last_book)
+ {
+ ++pages;
+ last_book = book;
+
+ display_verse();
+
+ char* book_name = HolyBible.title_book(book);
+ console.printf("%s %hd:%hd \r", book_name, chapter+1, verse+1);
+ delete [] book_name;
+
+ //wait(0.025);
+ offset += disp_len;
+ }
+ lcd.cls();
+ lcd.printf("%d", pages);
+ return;
+ */
+
+ Timer timer;
+ int old_buttons = 0; // start assuming nothing pressed
+ while (true)
+ {
+ // wait for something to happen
+ int new_buttons = rb + 2*lb;
+ if (new_buttons != old_buttons)
+ {
+ // simple debounce logic, wait for 25ms of steady state else start over
+ bool debounce = false;
+ int buttons = new_buttons;
+ timer.reset();
+ timer.start();
+
+ led1 = lb;
+ led2 = rb;
+
+ while (timer.read_ms() < 25)
+ {
+ int new_buttons = rb + 2*lb;
+ if (new_buttons != buttons)
+ {
+ debounce = false;
+ break;
+ }
+ else
+ debounce = true;
+ }
+ //console.printf("debounce: %d\n", new_buttons);
+
+ if (debounce && new_buttons == 0)
+ {
+ while (true)
+ {
+ int new_buttons = rb + 2*lb;
+ led1 = lb;
+ led2 = rb;
+
+ if (new_buttons != 0)
+ break;
+ if (timer.read_ms() > 2000)
+ {
+ mode = MODE_OFFSET;
+ display_verse();
+ break;
+ }
+ }
+ buttons = new_buttons = 0; // pretend we didn't see a change yet
+ }
+ else if (debounce && new_buttons != 0)
+ {
+ timer.reset();
+ timer.start();
+
+ emode next_mode = mode;
+
+ int start_ms = 0;
+ while(true)
+ {
+ int new_buttons = rb + 2*lb;
+ led1 = lb;
+ led2 = rb;
+
+ if (buttons != new_buttons)
+ {
+ mode = next_mode;
+ if (mode == MODE_OFFSET || mode == MODE_VERSE)
+ display_verse();
+ break;
+ }
+
+ {
+ int elapsed = timer.read_ms();
+ int inc_elapsed = elapsed - start_ms;
+ if (elapsed >= 4000 && inc_elapsed >= 250 || mode == MODE_4xBOOK && inc_elapsed >= 25 && (start_ms == 0 || inc_elapsed >= 500) )
+ {
+ //console.printf("4xBOOK elapsed=%d inc_elapsed=%d\n", elapsed, inc_elapsed);
+ if (buttons == 3)
+ {
+ }
+ if (buttons == 2)
+ {
+ book-=4;
+ if (book < 0)
+ book = 0;
+ }
+ if (buttons == 1)
+ {
+ book+=4;
+ if (book >= HolyBible.get_num_books())
+ book = HolyBible.get_num_books()-1;
+ }
+ if (buttons != 3)
+ {
+ chapter = 0;
+ verse = 0;
+ offset = 0;
+ display_nav();
+ next_mode = MODE_4xBOOK;
+ }
+ start_ms += inc_elapsed;
+ }
+ else if (elapsed >= 3000 && inc_elapsed >= 250 || mode == MODE_BOOK && inc_elapsed >= 25 && (start_ms == 0 || inc_elapsed >= 500) )
+ {
+ //console.printf("BOOK elapsed=%d inc_elapsed=%d\n", elapsed, inc_elapsed);
+ if (buttons == 3)
+ {
+ }
+ if (buttons == 2)
+ {
+ if (chapter == 0 && --book < 0)
+ book = 0;
+ chapter = 0;
+ verse = 0;
+ offset = 0;
+ }
+ if (buttons == 1)
+ {
+ if (++book >= HolyBible.get_num_books())
+ {
+ book = HolyBible.get_num_books()-1;
+ chapter = HolyBible.get_num_chapters(book)-1;
+ verse = HolyBible.get_num_verses(book, chapter)-1;
+ offset = 0;
+ }
+ else
+ {
+ chapter = 0;
+ verse = 0;
+ offset = 0;
+ }
+ }
+ if (buttons != 3)
+ {
+ display_nav();
+ next_mode = MODE_BOOK;
+ }
+ start_ms += inc_elapsed;
+ }
+ else if (elapsed >= 2000 && inc_elapsed >= 250 || mode == MODE_CHAPTER && inc_elapsed >= 25 && (start_ms == 0 || inc_elapsed >= 500) )
+ {
+ //console.printf("CHAPTER elapsed=%d inc_elapsed=%d\n", elapsed, inc_elapsed);
+ if (buttons == 3)
+ {
+ }
+ if (buttons == 2)
+ {
+ if (verse == 0 && --chapter < 0)
+ {
+ if (--book < 0)
+ {
+ book = 0;
+ chapter = 0;
+ }
+ else
+ chapter = HolyBible.get_num_chapters(book)-1;
+ }
+ }
+ if (buttons == 1)
+ {
+ if (++chapter >= HolyBible.get_num_chapters(book))
+ {
+ if (++book >= HolyBible.get_num_books())
+ {
+ book = HolyBible.get_num_books()-1;
+ chapter = HolyBible.get_num_chapters(book)-1;
+ }
+ else
+ chapter = 0;
+ }
+ }
+ if (buttons != 3)
+ {
+ verse = 0;
+ offset = 0;
+ display_nav();
+ next_mode = MODE_CHAPTER;
+ }
+ start_ms += inc_elapsed;
+ }
+ else if (elapsed >= 1000 && inc_elapsed >= 250 || mode == MODE_VERSE && inc_elapsed >= 25 && (start_ms == 0 || inc_elapsed >= 500) )
+ {
+ //console.printf("VERSE elapsed=%d inc_elapsed=%d\n", elapsed, inc_elapsed);
+ if (buttons == 3 && next_mode == MODE_BOOKMARK)
+ {
+ if (!HolyBible.bookmark_add(book, chapter, verse))
+ HolyBible.bookmark_del(book, chapter, verse);
+ for (int i=0; i<3; ++i)
+ {
+ led4 = 1;
+ wait(0.2);
+ led4 = 0;
+ wait(0.2);
+ }
+
+ next_mode = MODE_OFFSET;
+ }
+ if (buttons == 2)
+ {
+ if (offset > 0)
+ offset = 0;
+ else if (--verse < 0)
+ {
+ verse = 0;
+ offset = -lcd.rows()*lcd.columns();
+ }
+ else
+ offset = 0;
+ }
+ if (buttons == 1)
+ {
+ char* text = HolyBible.text_verse(book, chapter, verse);
+ offset = strlen(text);
+ delete [] text;
+ }
+ display_verse();
+ next_mode = MODE_VERSE;
+ start_ms += inc_elapsed;
+ }
+ else if (mode == MODE_OFFSET && elapsed >= 25 && elapsed < 1000 && (start_ms == 0 || inc_elapsed >= 500))
+ {
+ //console.printf("OFFSET elapsed=%d inc_elapsed=%d\n", elapsed, inc_elapsed);
+ if (buttons == 3)
+ next_mode = MODE_BOOKMARK;
+ if (buttons == 2)
+ offset -= lcd.rows()*lcd.columns();
+ if (buttons == 1)
+ offset += disp_len;
+ if (buttons != 3)
+ {
+ display_verse();
+ next_mode = MODE_OFFSET;
+ }
+ start_ms += inc_elapsed;
+ }
+ else if (mode == MODE_BOOKMARK && elapsed >= 25 && (start_ms == 0 || inc_elapsed >= 500))
+ {
+ if (buttons == 2)
+ {
+ if (HolyBible.bookmark_prev(book, chapter, verse))
+ {
+ offset = 0;
+ display_nav();
+ }
+ }
+ if (buttons == 1)
+ {
+ if (HolyBible.bookmark_next(book, chapter, verse))
+ {
+ offset = 0;
+ display_nav();
+ }
+ }
+ start_ms += inc_elapsed;
+ }
+ }
+ }
+ }
+ old_buttons = new_buttons;
+ }
+ }
+}
+
+void BibleUI::indexing(int progress, void* context)
+{
+ //console.printf("Indexing %d%%\n", progress);
+ TextLCD& lcd = *(TextLCD*)context;
+ lcd.cls();
+ lcd.printf("Indexing");
+ lcd.locate(0,1);
+ lcd.printf("%d%%", progress);
+}