cleanup & change binary name to rosenrot

1 files changed, 454 insertions, 0 deletions

diff --git a/rosenrot.c b/rosenrot.c
new file mode 100644
index 0000000..34a74ad
--- /dev/null
+++ b/rosenrot.c
@@ -0,0 +1,454 @@
+#include <stdlib.h>
+#include <string.h>
+#include <webkit2/webkit2.h>
+
+#include "config.h"
+#include "plugins/plugins.h"
+
+/* Global declarations */
+static GtkNotebook* notebook;
+static GtkWindow* window;
+static struct {
+    GtkHeaderBar* widget;
+    GtkEntry* line;
+    GtkEntryBuffer* line_text;
+    enum { _SEARCH,
+        _FIND,
+        _HIDDEN } entry_mode;
+} bar;
+static int num_tabs = 0;
+
+/* Utils */
+WebKitWebView* notebook_get_webview(GtkNotebook* notebook)
+{
+    return WEBKIT_WEB_VIEW(gtk_notebook_get_nth_page(
+        notebook, gtk_notebook_get_current_page(notebook)));
+}
+
+/* Load content*/
+void load_uri(WebKitWebView* view, const char* uri)
+{
+    if (g_str_has_prefix(uri, "http://") || g_str_has_prefix(uri, "https://") || g_str_has_prefix(uri, "file://") || g_str_has_prefix(uri, "about:")) {
+        webkit_web_view_load_uri(view, uri);
+    } else {
+        // Check for shortcuts
+        int l = SHORTCUT_N + strlen(uri) + 1;
+        char uri_expanded[l];
+        str_init(uri_expanded, l);
+        int check = shortcut_expand(uri, uri_expanded);
+        if (check == 2) {
+            webkit_web_view_load_uri(view, uri_expanded);
+        } else {
+            // Feed into search engine.
+            char tmp[strlen(uri) + strlen(SEARCH)];
+            snprintf(tmp, sizeof(tmp), SEARCH, uri);
+            webkit_web_view_load_uri(view, tmp);
+        }
+    }
+}
+
+/* Deal with new load or changed load */
+void redirect_if_annoying(WebKitWebView* view, const char* uri)
+{
+    if (LIBRE_REDIRECT_ENABLED) {
+        int l = LIBRE_N + strlen(uri) + 1;
+        char uri_filtered[l];
+        str_init(uri_filtered, l);
+
+        int check = libre_redirect(uri, uri_filtered);
+
+        if (check == 2) {
+            webkit_web_view_load_uri(view, uri_filtered);
+        }
+    }
+}
+void set_custom_style(WebKitWebView* view)
+{
+    if (CUSTOM_STYLE_ENABLED) {
+        char* style_js = malloc(STYLE_N + 1);
+        read_style_js(style_js);
+        webkit_web_view_evaluate_javascript(view, style_js, -1, NULL, "rosenrot-style-plugin", NULL, NULL, NULL);
+        free(style_js);
+    }
+}
+void handle_signal_load_changed(WebKitWebView* self, WebKitLoadEvent load_event,
+    GtkNotebook* notebook)
+{
+    switch (load_event) {
+        /* see <https://webkitgtk.org/reference/webkit2gtk/2.5.1/WebKitWebView.html>
+         */
+    case WEBKIT_LOAD_STARTED:
+        set_custom_style(self);
+        redirect_if_annoying(self, webkit_web_view_get_uri(self));
+        break;
+    case WEBKIT_LOAD_REDIRECTED:
+        redirect_if_annoying(self, webkit_web_view_get_uri(self));
+        break;
+    case WEBKIT_LOAD_COMMITTED:
+        redirect_if_annoying(self, webkit_web_view_get_uri(self));
+        set_custom_style(self);
+        break;
+    case WEBKIT_LOAD_FINISHED: {
+        /* Add gtk tab title */
+        const char* webpage_title = webkit_web_view_get_title(self);
+        const int max_length = 25;
+        char tab_title[max_length + 1];
+        if (webpage_title != NULL) {
+            for (int i = 0; i < (max_length); i++) {
+                tab_title[i] = webpage_title[i];
+                if (webpage_title[i] == '\0') {
+                    break;
+                }
+            }
+            tab_title[max_length] = '\0';
+        }
+
+        gtk_notebook_set_tab_label_text(notebook, GTK_WIDGET(self),
+            webpage_title == NULL ? "—" : tab_title);
+        // gtk_widget_hide(GTK_WIDGET(bar));
+    }
+    }
+}
+
+/* Create new tabs */
+void notebook_create_new_tab(GtkNotebook* notebook, const char* uri);
+// handle_signal_create_new_tab is bound to a signal inside notebook_create_new_tab
+// and itself calls notebook_create_new_tab
+// therefore we need to do a forward declaration for one of them.
+GtkWidget* handle_signal_create_new_tab(WebKitWebView* self,
+    WebKitNavigationAction* navigation_action,
+    GtkNotebook* notebook)
+{
+    if (num_tabs < MAX_NUM_TABS || num_tabs == 0) {
+        WebKitURIRequest* uri_request = webkit_navigation_action_get_request(navigation_action);
+        const char* uri = webkit_uri_request_get_uri(uri_request);
+        printf("Creating new window: %s\n", uri);
+        notebook_create_new_tab(notebook, uri);
+        gtk_notebook_set_show_tabs(notebook, true);
+        return NULL;
+    } else {
+        webkit_web_view_evaluate_javascript(self, "alert('Too many tabs, not opening a new one')", -1, NULL, "rosenrot-alert-numtabs", NULL, NULL, NULL);
+        return NULL;
+    }
+    /*
+     WebKitGTK documentation recommends returning the new webview.
+     I imagine that this might allow e.g., to go back in a new tab
+     or generally to keep track of history.
+     However, this would require either modifying notebook_create_new_tab
+     or duplicating its contents, for unclear gain.
+   */
+}
+WebKitWebView* create_new_webview()
+{
+    char* style;
+    WebKitSettings* settings;
+    WebKitWebContext* web_context;
+    WebKitCookieManager* cookiemanager;
+    WebKitUserContentManager* contentmanager;
+
+    settings = webkit_settings_new_with_settings(WEBKIT_DEFAULT_SETTINGS, NULL);
+    if (CUSTOM_USER_AGENT) {
+        webkit_settings_set_user_agent(
+            settings,
+            "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, "
+            "like Gecko) Chrome/110.0.0.0 Safari/537.36");
+        // See: <https://www.useragents.me/> for some common user agents
+    }
+    web_context = webkit_web_context_new_with_website_data_manager(
+        webkit_website_data_manager_new(DATA_MANAGER_OPTS, NULL));
+    contentmanager = webkit_user_content_manager_new();
+    cookiemanager = webkit_web_context_get_cookie_manager(web_context);
+
+    webkit_cookie_manager_set_persistent_storage(
+        cookiemanager, DATA_DIR "/cookies.sqlite",
+        WEBKIT_COOKIE_PERSISTENT_STORAGE_SQLITE);
+
+    webkit_cookie_manager_set_accept_policy(cookiemanager,
+        WEBKIT_COOKIE_POLICY_ACCEPT_ALWAYS);
+
+    if (g_file_get_contents("~/.config/rose/style.css", &style, NULL, NULL))
+        webkit_user_content_manager_add_style_sheet(
+            contentmanager, webkit_user_style_sheet_new(style, WEBKIT_USER_CONTENT_INJECT_ALL_FRAMES, WEBKIT_USER_STYLE_LEVEL_USER, NULL, NULL));
+
+    return g_object_new(WEBKIT_TYPE_WEB_VIEW, "settings", settings, "web-context",
+        web_context, "user-content-manager", contentmanager,
+        NULL);
+}
+void notebook_create_new_tab(GtkNotebook* notebook, const char* uri)
+{
+    if (num_tabs < MAX_NUM_TABS || MAX_NUM_TABS == 0) {
+
+        WebKitWebView* view = create_new_webview();
+
+        g_signal_connect(view, "load_changed", G_CALLBACK(handle_signal_load_changed), notebook);
+        g_signal_connect(view, "create", G_CALLBACK(handle_signal_create_new_tab), notebook);
+
+        int n = gtk_notebook_append_page(notebook, GTK_WIDGET(view), NULL);
+        gtk_notebook_set_tab_reorderable(notebook, GTK_WIDGET(view), true);
+        gtk_widget_show_all(GTK_WIDGET(window));
+        gtk_widget_hide(GTK_WIDGET(bar.widget));
+        load_uri(view, (uri) ? uri : HOME);
+
+        set_custom_style(view);
+
+        gtk_notebook_set_current_page(notebook, n);
+        gtk_notebook_set_tab_label_text(notebook, GTK_WIDGET(view), "-");
+        webkit_web_view_set_zoom_level(view, ZOOM);
+        num_tabs += 1;
+    } else {
+
+        webkit_web_view_evaluate_javascript(notebook_get_webview(notebook), "alert('Too many tabs, not opening a new one')", -1, NULL, "rosenrot-alert-numtabs", NULL, NULL, NULL);
+    }
+}
+
+/* Top bar */
+void show_bar(GtkNotebook* notebook)
+{
+    if (bar.entry_mode == _SEARCH) {
+        const char* url = webkit_web_view_get_uri(notebook_get_webview(notebook));
+        gtk_entry_set_placeholder_text(bar.line, "Search");
+        gtk_entry_buffer_set_text(bar.line_text, url, strlen(url));
+        gtk_widget_show(GTK_WIDGET(bar.widget));
+        gtk_window_set_focus(window, GTK_WIDGET(bar.line));
+    } else if (bar.entry_mode == _HIDDEN) {
+        gtk_widget_hide(GTK_WIDGET(bar.widget));
+    } else {
+        const char* search_text = webkit_find_controller_get_search_text(
+            webkit_web_view_get_find_controller(notebook_get_webview(notebook)));
+
+        if (search_text != NULL)
+            gtk_entry_buffer_set_text(bar.line_text, search_text, strlen(search_text));
+
+        gtk_entry_set_placeholder_text(bar.line, "Find");
+        gtk_widget_show(GTK_WIDGET(bar.widget));
+        gtk_window_set_focus(window, GTK_WIDGET(bar.line));
+    }
+}
+// Handle what happens when the user is on the bar and presses enter
+void handle_signal_bar_press_enter(GtkEntry* self, GtkNotebook* notebook)
+{
+    if (bar.entry_mode == _SEARCH)
+        load_uri(notebook_get_webview(notebook),
+            gtk_entry_buffer_get_text(bar.line_text));
+    else if (bar.entry_mode == _FIND)
+        webkit_find_controller_search(
+            webkit_web_view_get_find_controller(notebook_get_webview(notebook)),
+            gtk_entry_buffer_get_text(bar.line_text),
+            WEBKIT_FIND_OPTIONS_CASE_INSENSITIVE | WEBKIT_FIND_OPTIONS_WRAP_AROUND,
+            G_MAXUINT);
+
+    gtk_widget_hide(GTK_WIDGET(bar.widget));
+}
+
+/* Handle shortcuts */
+// Act when a particular shortcut is detected
+int handle_shortcut(func id, GtkNotebook* notebook)
+{
+    static double zoom = ZOOM;
+    static bool is_fullscreen = 0;
+
+    WebKitWebView* view = notebook_get_webview(notebook);
+
+    switch (id) {
+    case goback:
+        webkit_web_view_go_back(view);
+        break;
+    case goforward:
+        webkit_web_view_go_forward(view);
+        break;
+
+    case refresh:
+        webkit_web_view_reload(view);
+        break;
+    case refresh_force:
+        webkit_web_view_reload_bypass_cache(view);
+        break;
+
+    case back_to_home:
+        load_uri(view, HOME);
+        break;
+
+    case zoomin:
+        webkit_web_view_set_zoom_level(view,
+            (zoom += ZOOM_VAL));
+        break;
+
+    case zoomout:
+        webkit_web_view_set_zoom_level(view,
+            (zoom -= ZOOM_VAL));
+        break;
+
+    case zoom_reset:
+        webkit_web_view_set_zoom_level(view,
+            (zoom = ZOOM));
+        break;
+
+    case prev_tab:; // declarations aren't statements
+        // <https://stackoverflow.com/questions/92396/why-cant-variables-be-declared-in-a-switch-statement>
+        int n = gtk_notebook_get_n_pages(notebook);
+        int k = gtk_notebook_get_current_page(notebook);
+        int l = (n + k - 1) % n;
+        gtk_notebook_set_current_page(notebook, l);
+        break;
+
+    case next_tab:;
+        int m = gtk_notebook_get_n_pages(notebook);
+        int i = gtk_notebook_get_current_page(notebook);
+        int j = (i + 1) % m;
+        gtk_notebook_set_current_page(notebook, j);
+        break;
+
+    case close_tab:
+        gtk_notebook_remove_page(notebook, gtk_notebook_get_current_page(notebook));
+        num_tabs -= 1;
+
+        switch (gtk_notebook_get_n_pages(notebook)) {
+        case 0:
+            exit(0);
+            break;
+        case 1:
+            gtk_notebook_set_show_tabs(notebook, false);
+            break;
+        }
+
+        break;
+
+    case toggle_fullscreen:
+        if (is_fullscreen)
+            gtk_window_unfullscreen(window);
+        else
+            gtk_window_fullscreen(window);
+
+        is_fullscreen = !is_fullscreen;
+        break;
+
+    case show_searchbar:
+        bar.entry_mode = _SEARCH;
+        show_bar(notebook);
+        break;
+
+    case show_finder:
+        bar.entry_mode = _FIND;
+        show_bar(notebook);
+        break;
+
+    case finder_next:
+        webkit_find_controller_search_next(
+            webkit_web_view_get_find_controller(view));
+        break;
+
+    case finder_prev:
+        webkit_find_controller_search_previous(
+            webkit_web_view_get_find_controller(view));
+        break;
+
+    case new_tab:
+        notebook_create_new_tab(notebook, NULL);
+        gtk_notebook_set_show_tabs(notebook, true);
+        bar.entry_mode = _SEARCH;
+        show_bar(notebook);
+        break;
+
+    case hide_bar:
+        bar.entry_mode = _HIDDEN;
+        show_bar(notebook);
+        break;
+
+    case prettify: {
+        if (READABILITY_ENABLED) {
+            char* readability_js = malloc(READABILITY_N + 1);
+            read_readability_js(readability_js);
+            webkit_web_view_evaluate_javascript(view, readability_js, -1, NULL, "rosenrot-readability-plugin", NULL, NULL, NULL);
+            free(readability_js);
+        }
+        break;
+    }
+    }
+
+    return 1;
+}
+// Listen to key presses and call shortcuts if needed.
+int handle_signal_keypress(void* self, GdkEvent* event, GtkNotebook* notebook)
+{
+    (void)self;
+
+    guint event_keyval = 0;
+    gdk_event_get_keyval(event, &event_keyval);
+    GdkModifierType event_state = 0;
+    gdk_event_get_state(event, &event_state);
+
+    int debug_shortcuts = 0;
+    if (debug_shortcuts) {
+        printf("Keypress state: %d\n", event_state);
+        if (event_state & GDK_CONTROL_MASK) {
+            printf("Keypress state is: CONTROL\n");
+        }
+        printf("Keypress value: %d\n", event_keyval);
+    }
+
+    for (int i = 0; i < sizeof(shortcut) / sizeof(shortcut[0]); i++)
+        if ((event_state & shortcut[i].mod || shortcut[i].mod == 0x0) && event_keyval == shortcut[i].key)
+            return handle_shortcut(shortcut[i].id, notebook);
+    /*
+    If I wanted to bind button presses, like the extra button in the mouse,
+    I would have to bind the button-press-event signal instead.
+    Some links in case I go down that road:
+    - <https://docs.gtk.org/gtk3/signal.Widget.button-press-event.html>
+    - <https://docs.gtk.org/gdk3/union.Event.html>
+    - https://docs.gtk.org/gdk3/struct.EventButton.html
+    */
+    // This API is deprecated in GTK4 :(
+    return 0;
+}
+
+int main(int argc, char** argv)
+{
+    /* Initialize GTK in general */
+    gtk_init(NULL, NULL); // <https://docs.gtk.org/gtk3/func.init.html>
+    g_object_set(gtk_settings_get_default(), GTK_SETTINGS_CONFIG_H, NULL); // <https://docs.gtk.org/gobject/method.Object.set.html>
+    GtkCssProvider* css = gtk_css_provider_new();
+    gtk_css_provider_load_from_path(css, "/usr/share/themes/rose/style.css", NULL);
+    gtk_style_context_add_provider_for_screen(gdk_screen_get_default(), GTK_STYLE_PROVIDER(css), 800);
+
+    /* Initialize GTK objects. These are declared as static globals at the top of this file */
+    // Notebook
+    notebook = GTK_NOTEBOOK(gtk_notebook_new());
+    gtk_notebook_set_show_tabs(notebook, false);
+    gtk_notebook_set_show_border(notebook, false);
+
+    // Window
+    window = GTK_WINDOW(gtk_window_new(0));
+    gtk_window_set_default_size(window, WIDTH, HEIGHT);
+    g_signal_connect(window, "key-press-event", G_CALLBACK(handle_signal_keypress), notebook);
+    g_signal_connect(window, "destroy", G_CALLBACK(exit), notebook);
+    gtk_container_add(GTK_CONTAINER(window), GTK_WIDGET(notebook));
+
+    // Bar
+    bar.line_text = GTK_ENTRY_BUFFER(gtk_entry_buffer_new("", 0));
+    bar.line = GTK_ENTRY(gtk_entry_new_with_buffer(bar.line_text));
+    gtk_entry_set_alignment(bar.line, 0.48);
+    gtk_widget_set_size_request(GTK_WIDGET(bar.line), BAR_SIZE, -1);
+    g_signal_connect(bar.line, "activate", G_CALLBACK(handle_signal_bar_press_enter), notebook);
+
+    bar.widget = GTK_HEADER_BAR(gtk_header_bar_new());
+    gtk_header_bar_set_custom_title(bar.widget, GTK_WIDGET(bar.line));
+    gtk_window_set_titlebar(window, GTK_WIDGET(bar.widget));
+
+    /* Load first tab */
+    char* first_uri = argc > 1 ? argv[1] : HOME;
+    notebook_create_new_tab(notebook, first_uri);
+
+    /* Show to user */
+    gtk_widget_show_all(GTK_WIDGET(window));
+    gtk_widget_hide(GTK_WIDGET(bar.widget));
+
+    /* Deal with more tabs */
+    if (argc > 2) {
+        gtk_notebook_set_show_tabs(notebook, true);
+        for (int i = 2; i < argc; i++) {
+            notebook_create_new_tab(notebook, argv[i]);
+        }
+    }
+
+    gtk_main();
+}