X-Git-Url: https://git.stderr.nl/gitweb?a=blobdiff_plain;f=libchimara%2Fpager.c;h=c620bacaaf24bba76a0049b39e1fdd85c0ab56cb;hb=1775204e98cf4fa86cd43cd8665bb75fe1e6a15b;hp=294a6587aef1f5a84378f23b49772ca0924bffeb;hpb=8b8b592abd23f01d0e083011b309c6f02f8183d5;p=projects%2Fchimara%2Fchimara.git diff --git a/libchimara/pager.c b/libchimara/pager.c index 294a658..c620bac 100644 --- a/libchimara/pager.c +++ b/libchimara/pager.c @@ -32,8 +32,10 @@ move_pager_and_get_scroll_distance(GtkTextView *textview, gint *view_height, gin gtk_text_view_get_iter_location(textview, &newpager, &pagerpos); gtk_text_view_get_iter_location(textview, &end, &endpos); + /* g_printerr("View height = %d\n", visiblerect.height); - g_printerr("End - Pager = %d\n", endpos.y - pagerpos.y); + g_printerr("End - Pager = %d - %d = %d\n", endpos.y, pagerpos.y, endpos.y - pagerpos.y); + */ *view_height = visiblerect.height; *scroll_distance = endpos.y - pagerpos.y; @@ -43,7 +45,6 @@ move_pager_and_get_scroll_distance(GtkTextView *textview, gint *view_height, gin static void start_paging(winid_t win) { - printf("Start paging\n"); win->currently_paging = TRUE; g_signal_handler_unblock(win->widget, win->pager_expose_handler); g_signal_handler_unblock(win->widget, win->pager_keypress_handler); @@ -53,58 +54,11 @@ start_paging(winid_t win) static void stop_paging(winid_t win) { - printf("Stop paging\n"); win->currently_paging = FALSE; g_signal_handler_block(win->widget, win->pager_expose_handler); g_signal_handler_block(win->widget, win->pager_keypress_handler); } -/* Check whether paging should be done. This function is called inside the - * idle handler, after the textview has finished updating. */ -gboolean -pager_check(gpointer data) -{ - - printf("pager check (idle)...\n"); - winid_t win = (winid_t) data; - - /* Move the pager to the last visible character in the buffer */ - gint view_height, scroll_distance; - move_pager_and_get_scroll_distance( GTK_TEXT_VIEW(win->widget), &view_height, &scroll_distance, FALSE ); - - gdk_threads_enter(); - - if(view_height <= 1) - /* Paging is unusable when window is too small */ - return FALSE; - - /* Scroll past text already read by user. This is automatic scrolling, so disable the pager_ajustment_handler - * first, that acts on the belief the scolling is performed by the user. */ - GtkAdjustment *adj = gtk_scrolled_window_get_vadjustment(GTK_SCROLLED_WINDOW(win->frame)); - g_signal_handler_block(adj, win->pager_adjustment_handler); - GtkTextBuffer *buffer = gtk_text_view_get_buffer(GTK_TEXT_VIEW(win->widget)); - GtkTextMark *pager_position = gtk_text_buffer_get_mark(buffer, "pager_position"); - gtk_text_view_scroll_to_mark(GTK_TEXT_VIEW(win->widget), pager_position, 0.0, TRUE, 0.0, 0.0); - g_signal_handler_unblock(adj, win->pager_adjustment_handler); - - if(!win->currently_paging) { - if(scroll_distance > view_height) { - start_paging(win); - /* Seriously... */ - /* COMPAT: */ -#if GTK_CHECK_VERSION(2,14,0) - gdk_window_invalidate_rect(gtk_widget_get_window(win->widget), NULL, TRUE); -#else - gdk_window_invalidate_rect(win->widget->window, NULL, TRUE); -#endif - } - } - gdk_threads_leave(); - - /* Returning FALSE to prevent this function from being called multiple times */ - return FALSE; -} - /* When the user scrolls up in a textbuffer, start paging. */ void pager_after_adjustment_changed(GtkAdjustment *adj, winid_t win) @@ -127,25 +81,23 @@ gboolean pager_on_key_press_event(GtkTextView *textview, GdkEventKey *event, winid_t win) { GtkAdjustment *adj = gtk_scrolled_window_get_vadjustment( GTK_SCROLLED_WINDOW(win->frame) ); - gdouble step_increment, page_size, upper, lower, value; + gdouble page_size, upper, lower, value; g_object_get(adj, "page-size", &page_size, - "step-increment", &step_increment, "upper", &upper, "lower", &lower, "value", &value, NULL); switch (event->keyval) { - case GDK_space: case GDK_KP_Space: case GDK_Page_Down: case GDK_KP_Page_Down: + case GDK_KEY_space: case GDK_KEY_KP_Space: + case GDK_KEY_Page_Down: case GDK_KEY_KP_Page_Down: + case GDK_KEY_Return: case GDK_KEY_KP_Enter: gtk_adjustment_set_value(adj, CLAMP(value + page_size, lower, upper - page_size)); return TRUE; - case GDK_Page_Up: case GDK_KP_Page_Up: + case GDK_KEY_Page_Up: case GDK_KEY_KP_Page_Up: gtk_adjustment_set_value(adj, CLAMP(value - page_size, lower, upper - page_size)); return TRUE; - case GDK_Return: case GDK_KP_Enter: - gtk_adjustment_set_value(adj, CLAMP(value + step_increment, lower, upper - page_size)); - return TRUE; /* don't handle "up" and "down", they're used for input history */ } @@ -174,19 +126,50 @@ pager_on_expose(GtkTextView *textview, GdkEventExpose *event, winid_t win) return FALSE; /* Propagate event further */ } -gboolean -pager_after_expose_event(GtkTextView *textview, GdkEventExpose *event, winid_t win) +/* Check whether paging should be done. This function is called after the + * textview has finished validating text positions. */ +void +pager_after_size_request(GtkTextView *textview, GtkRequisition *requisition, winid_t win) { - printf("pager check (expose)...\n"); - g_idle_add(pager_check, win); - return FALSE; -} + /* Move the pager to the last visible character in the buffer */ + gint view_height, scroll_distance; + move_pager_and_get_scroll_distance(GTK_TEXT_VIEW(win->widget), &view_height, &scroll_distance, FALSE); -void -pager_after_size_request(GtkTextView *textview, GtkRequisition *requisition, winid_t win) -{ - printf("pager check (size request)...\n"); - g_idle_add(pager_check, win); + if(view_height <= 1) + /* Paging is unusable when window is too small */ + return; + + /* If not in interactive mode, then just scroll to the bottom. */ + ChimaraGlk *glk = CHIMARA_GLK(gtk_widget_get_ancestor(GTK_WIDGET(textview), CHIMARA_TYPE_GLK)); + g_assert(glk); + if(!chimara_glk_get_interactive(glk)) { + GtkTextIter end; + gtk_text_buffer_get_end_iter(gtk_text_view_get_buffer(textview), &end); + gtk_text_view_scroll_to_iter(textview, &end, 0.0, TRUE, 0.0, 0.0); + return; + } + + /* Scroll past text already read by user. This is automatic scrolling, so disable the pager_ajustment_handler + * first, that acts on the belief the scolling is performed by the user. */ + GtkAdjustment *adj = gtk_scrolled_window_get_vadjustment(GTK_SCROLLED_WINDOW(win->frame)); + g_signal_handler_block(adj, win->pager_adjustment_handler); + GtkTextBuffer *buffer = gtk_text_view_get_buffer(GTK_TEXT_VIEW(win->widget)); + GtkTextMark *pager_position = gtk_text_buffer_get_mark(buffer, "pager_position"); + gtk_text_view_scroll_to_mark(GTK_TEXT_VIEW(win->widget), pager_position, 0.0, TRUE, 0.0, 0.0); + g_signal_handler_unblock(adj, win->pager_adjustment_handler); + + if(!win->currently_paging) { + if(scroll_distance > view_height) { + start_paging(win); + /* Seriously... */ + /* COMPAT: */ +#if GTK_CHECK_VERSION(2,14,0) + gdk_window_invalidate_rect(gtk_widget_get_window(win->widget), NULL, TRUE); +#else + gdk_window_invalidate_rect(win->widget->window, NULL, TRUE); +#endif + } + } } void