+
+/*** Selections ***/
+
+/* compute_new_selection_rect/text calculates the area currently selected by
+ * view_rect. each handles a different mode;
+ */
+static GList *
+compute_new_selection_rect (EvView *view,
+ GdkRectangle *view_rect)
+{
+ int n_pages, i;
+ GList *list = NULL;
+
+ g_assert (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE);
+
+ n_pages = ev_page_cache_get_n_pages (view->page_cache);
+
+ for (i = 0; i < n_pages; i++) {
+ GdkRectangle page_area;
+ GtkBorder border;
+
+ if (get_page_extents (view, i, &page_area, &border)) {
+ GdkRectangle overlap;
+
+ if (gdk_rectangle_intersect (&page_area, view_rect, &overlap)) {
+ EvViewSelection *selection;
+
+ selection = g_new0 (EvViewSelection, 1);
+ selection->page = i;
+ view_rect_to_doc_rect (view, &overlap, &page_area,
+ &(selection->rect));
+
+ list = g_list_append (list, selection);
+ }
+ }
+ }
+
+ return list;
+}
+
+static GList *
+compute_new_selection_text (EvView *view,
+ GdkRectangle *view_rect)
+{
+ int n_pages, i;
+ GList *list = NULL;
+ EvViewSelection *first_selection = NULL;
+ EvViewSelection *last_selection = NULL;
+ gint width, height;
+
+ g_assert (view->selection_mode == EV_VIEW_SELECTION_TEXT);
+
+ n_pages = ev_page_cache_get_n_pages (view->page_cache);
+
+ /* We get the two edge pages */
+ for (i = 0; i < n_pages; i++) {
+ GdkRectangle page_area;
+ GtkBorder border;
+
+ if (get_page_extents (view, i, &page_area, &border)) {
+ GdkRectangle overlap;
+
+ if (gdk_rectangle_intersect (&page_area, view_rect, &overlap)) {
+ EvViewSelection *selection;
+
+ if (first_selection == NULL) {
+ first_selection = g_new0 (EvViewSelection, 1);
+ selection = first_selection;
+ } else if (last_selection == NULL) {
+ last_selection = g_new0 (EvViewSelection, 1);
+ selection = last_selection;
+ } else {
+ selection = last_selection;
+ }
+
+ selection->page = i;
+ view_rect_to_doc_rect (view, &overlap, &page_area,
+ &(selection->rect));
+ }
+ }
+ }
+
+ /* No overlap */
+ if (first_selection == NULL)
+ return NULL;
+
+ /* only one selection. Return a page of it */
+ if (last_selection == NULL)
+ return g_list_append (NULL, first_selection);
+
+ /*clean up the selections;
+ */
+ ev_page_cache_get_size (view->page_cache, first_selection->page,
+ 1.0, &width, &height);
+ first_selection->rect.x2 = width;
+ first_selection->rect.y2 = height;
+ list = g_list_append (NULL, first_selection);
+
+ /* Add all the intervening pages */
+ for (i = first_selection->page + 1; i < last_selection->page; i++) {
+ EvViewSelection *selection;
+
+ selection = g_new0 (EvViewSelection, 1);
+ selection->page = i;
+ ev_page_cache_get_size (view->page_cache, i,
+ 1.0, &width, &height);
+ selection->rect.x1 = selection->rect.y1 = 0;
+ selection->rect.x2 = width;
+ selection->rect.y2 = height;
+ g_list_append (list, selection);
+ }
+
+ /* Clean up the last page */
+ last_selection->rect.x1 = 0;
+ last_selection->rect.y1 = 0;
+ list = g_list_append (list, last_selection);
+
+ return list;
+}
+
+/* This function takes the newly calculated list, and figures out which regions
+ * have changed. It then queues a redraw approporiately.
+ */
+static void
+merge_selection_region (EvView *view,
+ GList *list)
+{
+
+ /* FIXME: actually write... */
+ clear_selection (view);
+ gtk_widget_queue_draw (GTK_WIDGET (view));
+
+ view->selection_info.selections = list;
+ ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, list);
+}
+
+static void
+compute_selections (EvView *view,
+ GdkRectangle *view_rect)
+{
+ GList *list;
+
+ if (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE)
+ list = compute_new_selection_rect (view, view_rect);
+ else
+ list = compute_new_selection_text (view, view_rect);
+ merge_selection_region (view, list);
+}
+
+/* Free's the selection. It's up to the caller to queue redraws if needed.
+ */
+static void
+selection_free (EvViewSelection *selection)
+{
+ g_free (selection);
+}
+
+static void
+clear_selection (EvView *view)
+{
+ g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
+ view->selection_info.selections = NULL;
+ view->selection_info.in_selection = FALSE;
+}
+
+
+void
+ev_view_select_all (EvView *view)
+{
+ int n_pages, i;
+
+ clear_selection (view);
+
+ n_pages = ev_page_cache_get_n_pages (view->page_cache);
+ for (i = 0; i < n_pages; i++) {
+ int width, height;
+ EvViewSelection *selection;
+
+ ev_page_cache_get_size (view->page_cache,
+ i, 1.0, &width, &height);
+
+ selection = g_new0 (EvViewSelection, 1);
+ selection->page = i;
+ selection->rect.x1 = selection->rect.y1 = 0;
+ selection->rect.x2 = width;
+ selection->rect.y2 = height;
+
+ view->selection_info.selections = g_list_append (view->selection_info.selections, selection);
+ }
+
+ ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, view->selection_info.selections);
+ gtk_widget_queue_draw (GTK_WIDGET (view));
+}
+
+static char *
+get_selected_text (EvView *ev_view)
+{
+ GString *text;
+ GList *l;
+
+ text = g_string_new (NULL);
+
+ ev_document_doc_mutex_lock ();
+
+ for (l = ev_view->selection_info.selections; l != NULL; l = l->next) {
+ EvViewSelection *selection = (EvViewSelection *)l->data;
+ char *tmp;
+
+ tmp = ev_document_get_text (ev_view->document,
+ selection->page,
+ &selection->rect);
+ g_string_append (text, tmp);
+ g_free (tmp);
+ }
+
+ ev_document_doc_mutex_unlock ();
+
+ return g_string_free (text, FALSE);
+}
+
+void
+ev_view_copy (EvView *ev_view)
+{
+ GtkClipboard *clipboard;
+ char *text;
+
+ if (!ev_document_can_get_text (ev_view->document)) {
+ return;
+ }
+
+ text = get_selected_text (ev_view);
+ clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
+ GDK_SELECTION_CLIPBOARD);
+ gtk_clipboard_set_text (clipboard, text, -1);
+ g_free (text);
+}
+
+static void
+ev_view_primary_get_cb (GtkClipboard *clipboard,
+ GtkSelectionData *selection_data,
+ guint info,
+ gpointer data)
+{
+ EvView *ev_view = EV_VIEW (data);
+ char *text;
+
+ if (!ev_document_can_get_text (ev_view->document)) {
+ return;
+ }
+
+ text = get_selected_text (ev_view);
+ gtk_selection_data_set_text (selection_data, text, -1);
+ g_free (text);
+}
+
+static void
+ev_view_primary_clear_cb (GtkClipboard *clipboard,
+ gpointer data)
+{
+ EvView *view = EV_VIEW (data);
+
+ clear_selection (view);
+}
+
+static void
+ev_view_update_primary_selection (EvView *ev_view)
+{
+ GtkClipboard *clipboard;
+
+ clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
+ GDK_SELECTION_PRIMARY);
+
+ if (ev_view->selection_info.selections) {
+ if (!gtk_clipboard_set_with_owner (clipboard,
+ targets,
+ G_N_ELEMENTS (targets),
+ ev_view_primary_get_cb,
+ ev_view_primary_clear_cb,
+ G_OBJECT (ev_view)))
+ ev_view_primary_clear_cb (clipboard, ev_view);
+ } else {
+ if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (ev_view))
+ gtk_clipboard_clear (clipboard);
+ }
+}
+
+/*** Cursor operations ***/
+
+static GdkCursor *
+ev_view_create_invisible_cursor(void)
+{
+ GdkBitmap *empty;
+ GdkColor black = { 0, 0, 0, 0 };
+ static char bits[] = { 0x00 };
+
+ empty = gdk_bitmap_create_from_data (NULL, bits, 1, 1);
+
+ return gdk_cursor_new_from_pixmap (empty, empty, &black, &black, 0, 0);
+}
+
+static void
+ev_view_set_cursor (EvView *view, EvViewCursor new_cursor)
+{
+ GdkCursor *cursor = NULL;
+ GdkDisplay *display;
+ GtkWidget *widget;
+
+ if (view->cursor == new_cursor) {
+ return;
+ }
+
+ widget = gtk_widget_get_toplevel (GTK_WIDGET (view));
+ display = gtk_widget_get_display (widget);
+ view->cursor = new_cursor;
+
+ switch (new_cursor) {
+ case EV_VIEW_CURSOR_NORMAL:
+ gdk_window_set_cursor (widget->window, NULL);
+ break;
+ case EV_VIEW_CURSOR_LINK:
+ cursor = gdk_cursor_new_for_display (display, GDK_HAND2);
+ break;
+ case EV_VIEW_CURSOR_WAIT:
+ cursor = gdk_cursor_new_for_display (display, GDK_WATCH);
+ break;
+ case EV_VIEW_CURSOR_HIDDEN:
+ cursor = ev_view_create_invisible_cursor ();
+ break;
+ case EV_VIEW_CURSOR_DRAG:
+ cursor = gdk_cursor_new_for_display (display, GDK_FLEUR);
+ break;
+ }
+
+ if (cursor) {
+ gdk_window_set_cursor (widget->window, cursor);
+ gdk_cursor_unref (cursor);
+ gdk_flush();
+ }
+}
+