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rosenrot/rose.c

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#include "config.h"
#include "plugins/libre_redirect/libre_redirect.h"
#include "plugins/readability/readability.h"
#include "plugins/shortcuts/shortcuts.h"
#include "plugins/style/style.h"
#include <stdlib.h>
#include <string.h>
#include <webkit2/webkit2.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; // top 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) {
GdkScreen* screen = gtk_window_get_screen(GTK_WINDOW(window));
WebKitWebView* view = create_new_webview();
gtk_widget_set_visual(GTK_WIDGET(window), rgba_visual);
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);
/*
printf("Keypress state: %d\n", event_state);
if(event->key.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
*/
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 */
// 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();
}
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