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- Committer: Raphael Isemann
- Date: 2013-10-08 14:34:14 UTC
- Revision ID: teemperor@googlemail.com-20131008143414-mqhijg2yv0nvnrb8
restructured the codebase
- files added:
- src/EBookWidget.vala
- files modified:
- src/BookWormWindow.vala
added
removed
src/BookWormWindow.vala
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class BookWormWindow : Window
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{
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private Granite.Widgets.Welcome welcome;
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private WebKit.WebView text_view;
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private ScrolledWindow scrolled_window;
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private Button nextButton;
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private Button backButton;
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private int pageno = 0;
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private Button next_button;
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private Button back_button;
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private Grid controls;
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private Gee.HashMap<string, string> contents;
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private List<string> toc;
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private int pageCount = 0;
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private string booktitle;
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private List<int> pageCountSection;
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private int totalPageCount;
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private int totalPageNumber;
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private EBookWidget ebook_widget;
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private Gtk.Label page_counter_label;
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"Open a book to start reading.");
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welcome.expand = true;
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ebook_widget = new EPubWidget();
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// Basic UI
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var content_grid = new Gtk.Grid ();
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content_grid.expand = true;
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white_bg.parse("rgb(255,255,255)");
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override_background_color (StateFlags.NORMAL, white_bg);
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nextButton = new Button ();
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next_button = new Button ();
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Gtk.Image next_img = new Gtk.Image.from_icon_name ("go-next-symbolic",
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Gtk.IconSize.BUTTON);
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nextButton.set_image(next_img);
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next_button.set_image(next_img);
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backButton = new Button();
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back_button = new Button();
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Gtk.Image back_img = new Gtk.Image.from_icon_name ("go-previous-symbolic",
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Gtk.IconSize.BUTTON);
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backButton.set_image(back_img);
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back_button.set_image(back_img);
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set_title ("BookWorm");
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set_size_request (640, 480);
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text_view = new WebKit.WebView ();
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text_view.expand = true;
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scrolled_window = new ScrolledWindow (null, null);
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//scrolled_window.set_policy (PolicyType.NEVER, PolicyType.NEVER);
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scrolled_window.add (this.text_view);
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scrolled_window.expand = true;
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//h_scrollBar = (Scrollbar) scrolled_window.get_hscrollbar();
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text_view.notify["load-status"].connect (webview_status_changed);
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controls = new Grid ();
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controls.hexpand = true;
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content_grid.attach (welcome, 0, 1, 1, 1);
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content_grid.attach (scrolled_window, 1, 1, 1, 1);
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controls = new Grid ();
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controls.attach (backButton, 0, 0, 1, 1);
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content_grid.attach (ebook_widget, 1, 1, 1, 1);
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controls.attach (back_button, 0, 0, 1, 1);
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var spacer1 = new Gtk.Grid();
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spacer1.hexpand = true;
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controls.attach (spacer1, 1, 0, 1, 1);
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controls.attach (spacer2, 3, 0, 1, 1);
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controls.attach (nextButton, 4, 0, 1, 1);
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controls.attach (next_button, 4, 0, 1, 1);
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content_grid.attach (controls, 0, 2, 2, 1);
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content_grid.show_all ();
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scrolled_window.show_all ();
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scrolled_window.hide ();
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ebook_widget.show_all ();
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ebook_widget.hide ();
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controls.hide ();
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welcome.append( Gtk.Stock.OPEN, "Open Book", "Open a Book");
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welcome.set_sensitive (true);
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welcome.show_all ();
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welcome.activated.connect (on_welcome_activated);
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nextButton.clicked.connect (on_next_clicked);
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backButton.clicked.connect (on_back_clicked);
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next_button.clicked.connect (on_next_clicked);
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back_button.clicked.connect (on_back_clicked);
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back_button.sensitive = false;
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update_page_counter_label ();
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}
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/**
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}
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}
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int indexNum = 0;
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private void on_next_clicked() {
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pageno++;
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totalPageNumber++;
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if((pageCount - 1) < pageno) {
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pageno = 0;
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indexNum++;
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text_view.load_html_string(contents[toc.nth_data(indexNum)], "file://");
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}
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update_page();
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}
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private void on_back_clicked() {
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pageno--;
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totalPageNumber--;
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if(pageno < 0) {
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pageno = 0;
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indexNum--;
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text_view.load_html_string(contents[toc.nth_data(indexNum)], "file://");
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}
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update_page();
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}
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bool twoPages = false;
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private void update_page() {
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set_title(booktitle + " " + (totalPageNumber + 1).to_string() + " of " + totalPageCount.to_string());
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string height = (text_view.get_allocated_height() - 10).to_string();
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string width = text_view.get_allocated_width().to_string();
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int offset = text_view.get_allocated_width() * pageno;
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if(twoPages) {
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text_view.execute_script(@"
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totalHeight = content.offsetHeight;
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pageCount = Math.floor(totalHeight/$height) + 1;
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pageCount = pageCount * 2;
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content.style.width = $width * pageCount / 2;
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content.style.height = $height;
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content.style.right = $offset;
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content.style.WebkitColumnCount = pageCount;
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");
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} else {
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text_view.execute_script(@"
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totalHeight = content.offsetHeight;
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pageCount = Math.floor(totalHeight/$height) + 1;
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pageCount = pageCount;
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content.style.width = $width * pageCount;
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content.style.height = $height;
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content.style.right = $offset;
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content.style.WebkitColumnCount = pageCount;
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");
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}
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page_counter_label.set_label (pageno.to_string () +
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"/" + totalPageCount.to_string ());
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}
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private void webview_status_changed (Object? source, ParamSpec pspec) {
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int height = (text_view.get_allocated_height() - 10);
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string strHeight = height.to_string();
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string width = text_view.get_allocated_width().to_string();
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int min;
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int natural;
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text_view.get_preferred_height(out min, out natural);
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string totalHeight = min.to_string();
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pageCount = (int) Math.floor(min/height) + 1;
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string strPageCount = pageCount.to_string();
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switch (text_view.load_status) {
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case WebKit.LoadStatus.FINISHED:
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double animationSpeed = 0.5;
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if(calculatingTotalPageCount) {
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animationSpeed = 0;
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}
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string js = @"
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var desiredHeight = $height;
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var desiredWidth = $width;
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var bodyID = document.getElementsByTagName('body')[0];
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org_html = bodyID.innerHTML;
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new_html = \"<div id = 'container'><div id='content'>\" +
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org_html + '</div></div>';
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bodyID.innerHTML = new_html;
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var container = document.getElementsByTagName('div')[0];
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var content = document.getElementsByTagName('div')[1];
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totalHeight = $totalHeight;
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pageCount = Math.floor(totalHeight/desiredHeight) + 1;
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content.style.padding = 0;
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content.style.width = desiredWidth * $strPageCount;
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content.style.height = $strHeight;
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content.style.WebkitColumnCount = $strPageCount;
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content.style.right = 0;
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content.style.position = 'relative';
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content.style['-webkit-transition-duration'] = '$animationSpeed s';
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content.style.overflow = 'visible';
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container.style.height = '100%';
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container.style.width = '100%';
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container.style.overflow = 'hidden';";
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text_view.execute_script(js);
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update_page();
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if(calculatingTotalPageCount) {
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pageCountSection.append(pageCount);
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totalPageCount += pageCount;
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calcProgress++;
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if(calcProgress < toc.length()) {
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text_view.load_html_string(contents[toc.nth_data(calcProgress)], "file://");
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} else {
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calculatingTotalPageCount = false;
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text_view.load_html_string(contents[toc.nth_data(0)], "file://");
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}
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}
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break;
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}
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}
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private void on_next_clicked () {
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ebook_widget.next_page ();
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check_nav_buttons ();
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update_page_counter_label ();
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}
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private void on_back_clicked () {
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ebook_widget.previous_page ();
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check_nav_buttons ();
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update_page_counter_label ();
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}
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private void check_nav_buttons () {
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if(ebook_widget.page_counter_available ()) {
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back_button.sensitive = (ebook_widget.get_current_page () != 0);
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next_button.sensitive = (ebook_widget.get_current_page ()
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!= ebook_widget.get_total_pages ());
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}
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}
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private void update_page_counter_label () {
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if(ebook_widget.page_counter_available ())
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page_counter_label.set_label (
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(ebook_widget.get_current_page ()+1).to_string () +
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"/" + ebook_widget.get_total_pages ().to_string ());
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}
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/**
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* Set and call the file chooser dialog.
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filechooser.destroy ();
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if (filename != "") {
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open_epub (filename);
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}
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}
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bool calculatingTotalPageCount = false;
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int calcProgress = 0;
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private void calculateTotalPageCount() {
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calculatingTotalPageCount = true;
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text_view.load_html_string(contents[toc.nth_data(calcProgress)], "file://");
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}
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private void open_epub(string filename) {
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EPub.Context ebook = new EPub.Context(filename, 3);
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booktitle = ebook.get_metadata(EPub.Metadata.TITLE)[0];
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set_title(booktitle);
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//show reader view
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this.scrolled_window.show ();
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this.welcome.hide ();
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controls.show ();
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//get table of contents from epub
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toc = new List<string> ();
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EPub.TIterator it = new TIterator (ebook, EPub.TIteratorType.NAVMAP, 3);
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if (it == null) {
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it = new TIterator(ebook, EPub.TIteratorType.GUIDE, 3);
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}
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while (it != null && it.next () == 1) {
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toc.append (it.get_curr_link ());
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}
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//if table of contents turns out to be empty, we generate one
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bool generatetoc = (toc.length () == 0 );
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//get contents of epub
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EPub.Iterator I = new Iterator (ebook, EPub.IteratorType.SPINE, 3);
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contents = new Gee.HashMap<string, string> ();
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string next = "";
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do {
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if (generatetoc) {
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toc.append (I.get_curr_url());
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}
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contents.set (I.get_curr_url (), next);
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next = I.get_next ();
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}
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while (next != null);
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//print out table of contents for debugging purposes
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foreach (string key in toc) {
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stdout.printf ("keys %s\n", key);
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}
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calculateTotalPageCount();
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//load the first set of pages from table of contents
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text_view.load_html_string (contents[toc.nth_data(0)], "file://");
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ebook_widget.open_book (filename);
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ebook_widget.show_all();
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welcome.hide ();
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controls.show ();
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update_page_counter_label ();
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}
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}
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