2 * Claws Mail -- A GTK+ based, lightweight, and fast e-mail client
3 * Copyright(C) 2019 the Claws Mail Team
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 3 of the License, or
8 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 * You should have received a copy of the GNU General Public License
14 * along with this program; if not, write tothe Free Software
15 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
20 #include "claws-features.h"
24 #include <glib/gi18n.h>
25 #include <glib/gstdio.h>
27 #include <sys/types.h>
29 #include <curl/curl.h>
34 #include "litehtml/litehtml.h"
37 #include "lh_widget.h"
38 #include "lh_widget_wrapped.h"
41 const gchar *prefs_common_get_uri_cmd(void);
48 static gboolean expose_event_cb(GtkWidget *widget, GdkEvent *event,
50 static gboolean button_press_event(GtkWidget *widget, GdkEventButton *event,
52 static gboolean motion_notify_event(GtkWidget *widget, GdkEventButton *event,
54 static gboolean button_release_event(GtkWidget *widget, GdkEventButton *event,
56 static void open_link_cb(GtkMenuItem *item, gpointer user_data);
57 static void copy_link_cb(GtkMenuItem *item, gpointer user_data);
59 lh_widget::lh_widget()
64 m_scrolled_window = gtk_scrolled_window_new(NULL, NULL);
65 gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(m_scrolled_window),
66 GTK_POLICY_AUTOMATIC, GTK_POLICY_ALWAYS);
69 GtkScrolledWindow *scw = GTK_SCROLLED_WINDOW(m_scrolled_window);
70 m_viewport = gtk_viewport_new(
71 gtk_scrolled_window_get_hadjustment(scw),
72 gtk_scrolled_window_get_vadjustment(scw));
73 gtk_container_add(GTK_CONTAINER(m_scrolled_window), m_viewport);
76 m_drawing_area = gtk_drawing_area_new();
77 gtk_container_add(GTK_CONTAINER(m_viewport), m_drawing_area);
78 g_signal_connect(m_drawing_area, "expose-event",
79 G_CALLBACK(expose_event_cb), this);
80 g_signal_connect(m_drawing_area, "motion_notify_event",
81 G_CALLBACK(motion_notify_event), this);
82 g_signal_connect(m_drawing_area, "button_press_event",
83 G_CALLBACK(button_press_event), this);
84 g_signal_connect(m_drawing_area, "button_release_event",
85 G_CALLBACK(button_release_event), this);
87 gtk_widget_show_all(m_scrolled_window);
90 m_context_menu = gtk_menu_new();
92 item = gtk_menu_item_new_with_label(_("Open Link"));
93 g_signal_connect(G_OBJECT(item), "activate", G_CALLBACK(open_link_cb), this);
94 gtk_menu_shell_append(GTK_MENU_SHELL(m_context_menu), item);
96 item = gtk_menu_item_new_with_label(_("Copy Link Location"));
97 g_signal_connect(G_OBJECT(item), "activate", G_CALLBACK(copy_link_cb), this);
98 gtk_menu_shell_append(GTK_MENU_SHELL(m_context_menu), item);
101 m_rendered_width = 0;
102 m_context.load_master_stylesheet(master_css);
109 m_showing_url = FALSE;
111 gtk_widget_set_events(m_drawing_area,
112 GDK_BUTTON_RELEASE_MASK
113 | GDK_BUTTON_PRESS_MASK
114 | GDK_POINTER_MOTION_MASK);
117 lh_widget::~lh_widget()
119 g_object_unref(m_drawing_area);
120 m_drawing_area = NULL;
121 g_object_unref(m_scrolled_window);
122 m_scrolled_window = NULL;
127 GtkWidget *lh_widget::get_widget() const
129 return m_scrolled_window;
132 void lh_widget::set_caption(const litehtml::tchar_t* caption)
134 debug_print("lh_widget set_caption\n");
138 void lh_widget::set_base_url(const litehtml::tchar_t* base_url)
140 debug_print("lh_widget set_base_url '%s'\n",
141 (base_url ? base_url : "(null)"));
142 m_base_url = base_url;
146 void lh_widget::on_anchor_click(const litehtml::tchar_t* url, const litehtml::element::ptr& el)
148 debug_print("lh_widget on_anchor_click. url -> %s\n", url);
150 m_clicked_url = fullurl(url);
154 void lh_widget::import_css(litehtml::tstring& text, const litehtml::tstring& url, litehtml::tstring& baseurl)
156 debug_print("lh_widget import_css\n");
157 baseurl = master_css;
160 void lh_widget::get_client_rect(litehtml::position& client) const
162 if (m_drawing_area == NULL)
165 client.width = m_rendered_width;
166 client.height = m_height;
170 // debug_print("lh_widget::get_client_rect: %dx%d\n",
171 // client.width, client.height);
174 void lh_widget::open_html(const gchar *contents)
176 gint num = clear_images(lh_prefs_get()->image_cache_size * 1024 * 1000);
179 debug_print("LH: cleared %d images from image cache\n", num);
183 lh_widget_statusbar_push("Loading HTML part ...");
184 m_html = litehtml::document::createFromString(contents, this, &m_context);
185 m_rendered_width = 0;
186 if (m_html != NULL) {
187 debug_print("lh_widget::open_html created document\n");
188 adj = gtk_scrolled_window_get_hadjustment(
189 GTK_SCROLLED_WINDOW(m_scrolled_window));
190 gtk_adjustment_set_value(adj, 0.0);
191 adj = gtk_scrolled_window_get_vadjustment(
192 GTK_SCROLLED_WINDOW(m_scrolled_window));
193 gtk_adjustment_set_value(adj, 0.0);
196 lh_widget_statusbar_pop();
199 void lh_widget::draw(cairo_t *cr)
201 double x1, x2, y1, y2;
202 double width, height;
207 cairo_clip_extents(cr, &x1, &y1, &x2, &y2);
212 litehtml::position pos;
213 pos.width = (int)width;
214 pos.height = (int)height;
218 m_html->draw((litehtml::uint_ptr)cr, 0, 0, &pos);
221 void lh_widget::redraw(gboolean force_render)
233 /* Get width of the viewport. */
234 gdkwin = gtk_viewport_get_view_window(GTK_VIEWPORT(m_viewport));
235 width = gdk_window_get_width(gdkwin);
236 m_height = gdk_window_get_height(gdkwin);
238 /* If the available width has changed, rerender the HTML content. */
239 if (m_rendered_width != width || force_render) {
240 debug_print("lh_widget::redraw: width changed: %d != %d\n",
241 m_rendered_width, width);
243 /* Update our internally stored width, mainly so that
244 * lh_widget::get_client_rect() gives correct width during the
246 m_rendered_width = width;
248 /* Re-render HTML for this width. */
249 m_html->media_changed();
250 m_html->render(m_rendered_width);
251 debug_print("render is %dx%d\n", m_html->width(), m_html->height());
253 /* Change drawing area's size to match what was rendered. */
254 gtk_widget_set_size_request(m_drawing_area,
255 m_html->width(), m_html->height());
258 /* Paint the rendered HTML. */
259 gdkwin = gtk_widget_get_window(m_drawing_area);
260 if (gdkwin == NULL) {
261 g_warning("lh_widget::redraw: No GdkWindow to draw on!");
264 cr = gdk_cairo_create(GDK_DRAWABLE(gdkwin));
270 void lh_widget::paint_white()
272 GdkWindow *gdkwin = gtk_widget_get_window(m_drawing_area);
273 if (gdkwin == NULL) {
274 g_warning("lh_widget::clear: No GdkWindow to draw on!");
277 cairo_t *cr = gdk_cairo_create(GDK_DRAWABLE(gdkwin));
279 /* Paint white background. */
281 gdk_drawable_get_size(gdkwin, &width, &height);
282 cairo_rectangle(cr, 0, 0, width, height);
283 cairo_set_source_rgb(cr, 255, 255, 255);
288 void lh_widget::clear()
292 m_rendered_width = 0;
294 m_clicked_url.clear();
297 void lh_widget::set_cursor(const litehtml::tchar_t* cursor)
299 litehtml::element::ptr over_el = m_html->over_element();
303 (over_el == NULL || over_el != m_over_element)) {
304 lh_widget_statusbar_pop();
305 m_showing_url = FALSE;
308 if (over_el != m_over_element) {
309 m_over_element = over_el;
310 update_cursor(cursor);
314 void lh_widget::update_cursor(const litehtml::tchar_t* cursor)
316 GdkCursorType cursType = GDK_ARROW;
317 const litehtml::tchar_t *href = get_href_at(m_over_element);
319 /* If there is a href, and litehtml is okay with showing a pointer
320 * cursor ("pointer" or "auto"), set it, otherwise keep the
321 * default arrow cursor */
322 if ((!strcmp(cursor, "pointer") || !strcmp(cursor, "auto")) &&
324 cursType = GDK_HAND2;
327 if (cursType == GDK_ARROW) {
328 gdk_window_set_cursor(gtk_widget_get_window(m_drawing_area), NULL);
330 gdk_window_set_cursor(gtk_widget_get_window(m_drawing_area), gdk_cursor_new(cursType));
333 /* If there is a href, show it in statusbar */
335 lh_widget_statusbar_push(fullurl(href).c_str());
336 m_showing_url = TRUE;
340 const litehtml::tchar_t *lh_widget::get_href_at(litehtml::element::ptr element) const
342 litehtml::element::ptr el;
347 /* If it's not an anchor, check if it has a parent anchor
348 * (e.g. it's an image within an anchor) and grab a pointer
350 if (strcmp(element->get_tagName(), "a") && element->parent()) {
351 el = element->parent();
352 while (el && el != m_html->root() && strcmp(el->get_tagName(), "a")) {
356 if (!el || el == m_html->root())
362 /* At this point, over_el is pointing at an anchor tag, so let's
363 * grab its href attribute. */
364 return el->get_attr(_t("href"));
367 const litehtml::tchar_t *lh_widget::get_href_at(const gint x, const gint y) const
369 litehtml::element::ptr over_el, el;
374 over_el = m_html->root()->get_element_by_point(x, y, x, y);
378 return get_href_at(over_el);
381 void lh_widget::print()
383 debug_print("lh_widget print\n");
384 gtk_widget_realize(GTK_WIDGET(m_drawing_area));
387 void lh_widget::popup_context_menu(const litehtml::tchar_t *url,
388 GdkEventButton *event)
390 cm_return_if_fail(url != NULL);
391 cm_return_if_fail(event != NULL);
393 debug_print("lh_widget showing context menu for '%s'\n", url);
396 gtk_widget_show_all(m_context_menu);
397 gtk_menu_popup(GTK_MENU(m_context_menu), NULL, NULL, NULL, NULL,
398 event->button, event->time);
401 void lh_widget::update_font()
403 PangoFontDescription *pd =
404 pango_font_description_from_string(lh_prefs_get()->default_font);
405 gboolean absolute = pango_font_description_get_size_is_absolute(pd);
408 m_font_name = g_strdup(pango_font_description_get_family(pd));
409 m_font_size = pango_font_description_get_size(pd);
411 pango_font_description_free(pd);
414 m_font_size /= PANGO_SCALE;
416 debug_print("Font set to '%s', size %d\n", m_font_name, m_font_size);
419 const litehtml::tstring lh_widget::fullurl(const litehtml::tchar_t *url) const
421 if (*url == '#' && !m_base_url.empty())
422 return m_base_url + url;
427 void lh_widget::set_partinfo(MimeInfo *partinfo)
429 m_partinfo = partinfo;
432 GdkPixbuf *lh_widget::get_local_image(const litehtml::tstring url) const
436 MimeInfo *p = m_partinfo;
438 if (strncmp(url.c_str(), "cid:", 4) != 0) {
439 debug_print("lh_widget::get_local_image: '%s' is not a local URI, ignoring\n", url.c_str());
443 name = url.c_str() + 4;
444 debug_print("getting message part '%s'\n", name);
446 while ((p = procmime_mimeinfo_next(p)) != NULL) {
447 size_t len = strlen(name);
449 /* p->id is in format "<partname>" */
451 strlen(p->id) >= len + 2 &&
452 !strncasecmp(name, p->id + 1, len) &&
453 *(p->id + len + 1) == '>') {
454 GInputStream *stream;
455 GError *error = NULL;
457 stream = procmime_get_part_as_inputstream(p);
458 if (stream == NULL) {
459 g_warning("Could not decode MIME part\n");
463 pixbuf = gdk_pixbuf_new_from_stream(stream, NULL, &error);
464 g_object_unref(stream);
466 g_warning("Couldn't load image: %s\n", error->message);
475 /* MIME part with requested name was not found */
479 ////////////////////////////////////////////////
480 static gboolean expose_event_cb(GtkWidget *widget, GdkEvent *event,
483 lh_widget *w = (lh_widget *)user_data;
488 static gboolean button_press_event(GtkWidget *widget, GdkEventButton *event,
491 litehtml::position::vector redraw_boxes;
492 lh_widget *w = (lh_widget *)user_data;
494 if (w->m_html == NULL)
497 //debug_print("lh_widget on_button_press_event\n");
499 if (event->type == GDK_2BUTTON_PRESS ||
500 event->type == GDK_3BUTTON_PRESS)
504 if (event->button == 3) {
505 const litehtml::tchar_t *url = w->get_href_at((gint)event->x, (gint)event->y);
508 w->popup_context_menu(url, event);
513 if(w->m_html->on_lbutton_down((int) event->x, (int) event->y,
514 (int) event->x, (int) event->y, redraw_boxes)) {
515 for(auto& pos : redraw_boxes) {
516 debug_print("x: %d y:%d w: %d h: %d\n", pos.x, pos.y, pos.width, pos.height);
517 gtk_widget_queue_draw_area(widget, pos.x, pos.y, pos.width, pos.height);
524 static gboolean motion_notify_event(GtkWidget *widget, GdkEventButton *event,
527 litehtml::position::vector redraw_boxes;
528 lh_widget *w = (lh_widget *)user_data;
530 //debug_print("lh_widget on_motion_notify_event\n");
534 if(w->m_html->on_mouse_over((int) event->x, (int) event->y, (int) event->x, (int) event->y, redraw_boxes))
536 for (auto& pos : redraw_boxes)
538 debug_print("x: %d y:%d w: %d h: %d\n", pos.x, pos.y, pos.width, pos.height);
539 gtk_widget_queue_draw_area(widget, pos.x, pos.y, pos.width, pos.height);
547 static gboolean button_release_event(GtkWidget *widget, GdkEventButton *event,
550 litehtml::position::vector redraw_boxes;
551 lh_widget *w = (lh_widget *)user_data;
552 GError* error = NULL;
554 if (w->m_html == NULL)
557 //debug_print("lh_widget on_button_release_event\n");
559 if (event->type == GDK_2BUTTON_PRESS ||
560 event->type == GDK_3BUTTON_PRESS)
564 if (event->button == 3)
567 w->m_clicked_url.clear();
569 if(w->m_html->on_lbutton_up((int) event->x, (int) event->y, (int) event->x, (int) event->y, redraw_boxes))
571 for (auto& pos : redraw_boxes)
573 debug_print("x: %d y:%d w: %d h: %d\n", pos.x, pos.y, pos.width, pos.height);
574 gtk_widget_queue_draw_area(widget, pos.x, pos.y, pos.width, pos.height);
578 if (!w->m_clicked_url.empty())
580 debug_print("Open in browser: %s\n", w->m_clicked_url.c_str());
581 open_uri(w->m_clicked_url.c_str(), prefs_common_get_uri_cmd());
587 static void open_link_cb(GtkMenuItem *item, gpointer user_data)
589 lh_widget_wrapped *w = (lh_widget_wrapped *)user_data;
591 open_uri(w->m_clicked_url.c_str(), prefs_common_get_uri_cmd());
594 static void copy_link_cb(GtkMenuItem *item, gpointer user_data)
596 lh_widget_wrapped *w = (lh_widget_wrapped *)user_data;
598 gtk_clipboard_set_text(gtk_clipboard_get(GDK_SELECTION_PRIMARY),
599 w->m_clicked_url.c_str(), -1);
600 gtk_clipboard_set_text(gtk_clipboard_get(GDK_SELECTION_CLIPBOARD),
601 w->m_clicked_url.c_str(), -1);
604 ///////////////////////////////////////////////////////////
607 lh_widget_wrapped *lh_widget_new()
609 return new lh_widget;
612 GtkWidget *lh_widget_get_widget(lh_widget_wrapped *w)
614 return w->get_widget();
617 void lh_widget_open_html(lh_widget_wrapped *w, const gchar *path)
622 void lh_widget_clear(lh_widget_wrapped *w)
627 void lh_widget_destroy(lh_widget_wrapped *w)
632 void lh_widget_print(lh_widget_wrapped *w) {
636 void lh_widget_set_partinfo(lh_widget_wrapped *w, MimeInfo *partinfo)
638 w->set_partinfo(partinfo);