From: rodin Date: Tue, 11 May 2010 10:30:07 +0000 (+0000) Subject: More pager improvements. Pager now determines correctly which text is read by the... X-Git-Tag: v0.9~193 X-Git-Url: https://git.stderr.nl/gitweb?a=commitdiff_plain;h=8b8b592abd23f01d0e083011b309c6f02f8183d5;p=projects%2Fchimara%2Fchimara.git More pager improvements. Pager now determines correctly which text is read by the user and which is not. Pager will automatically scroll past read text. --- diff --git a/libchimara/input.c b/libchimara/input.c index 43ed045..d591916 100644 --- a/libchimara/input.c +++ b/libchimara/input.c @@ -435,6 +435,10 @@ on_char_input_key_press_event(GtkWidget *widget, GdkEventKey *event, winid_t win the shift key when the user tries to type a capital letter */ if(event->is_modifier) return FALSE; /* don't stop the event */ + + /* All text up to the input position is now regarded as being read by the user */ + if(win->type == wintype_TextBuffer) + pager_update(win); glui32 keycode = keyval_to_glk_keycode(event->keyval, win->input_request_type == INPUT_REQUEST_CHARACTER_UNICODE); @@ -456,6 +460,8 @@ on_line_input_key_press_event(GtkWidget *widget, GdkEventKey *event, winid_t win switch(win->type) { case wintype_TextBuffer: + /* All text up to the input position is now regarded as being read by the user */ + pager_update(win); /* History up/down */ if(event->keyval == GDK_Up || event->keyval == GDK_KP_Up diff --git a/libchimara/pager.c b/libchimara/pager.c index c88ab63..294a658 100644 --- a/libchimara/pager.c +++ b/libchimara/pager.c @@ -68,7 +68,6 @@ 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 ); @@ -79,6 +78,15 @@ pager_check(gpointer data) /* 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); @@ -90,14 +98,6 @@ pager_check(gpointer data) gdk_window_invalidate_rect(win->widget->window, NULL, TRUE); #endif } - else if(scroll_distance > 0) { - if(win->input_request_type != INPUT_REQUEST_NONE) { - GtkTextBuffer *buffer = gtk_text_view_get_buffer(GTK_TEXT_VIEW(win->widget)); - GtkTextMark *end = gtk_text_buffer_get_mark(buffer, "end_position"); - - gtk_text_view_scroll_mark_onscreen(GTK_TEXT_VIEW(win->widget), end); - } - } } gdk_threads_leave(); @@ -179,36 +179,6 @@ pager_after_expose_event(GtkTextView *textview, GdkEventExpose *event, winid_t w { printf("pager check (expose)...\n"); g_idle_add(pager_check, win); - -// /* 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 ); -// -// if(view_height <= 1) -// /* Paging is unusable when window is too small */ -// return FALSE; -// -// 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 -// } -// else if(scroll_distance > 0) { -// if(win->input_request_type != INPUT_REQUEST_NONE) { -// GtkTextBuffer *buffer = gtk_text_view_get_buffer(GTK_TEXT_VIEW(win->widget)); -// GtkTextMark *end = gtk_text_buffer_get_mark(buffer, "end_position"); -// -// gtk_text_view_scroll_mark_onscreen(GTK_TEXT_VIEW(win->widget), end); -// } -// } -// } - return FALSE; } @@ -218,3 +188,14 @@ pager_after_size_request(GtkTextView *textview, GtkRequisition *requisition, win printf("pager check (size request)...\n"); g_idle_add(pager_check, win); } + +void +pager_update(winid_t win) +{ + GtkTextIter input_iter; + GtkTextBuffer *buffer = gtk_text_view_get_buffer(GTK_TEXT_VIEW(win->widget)); + GtkTextMark *input_position = gtk_text_buffer_get_mark(buffer, "input_position"); + GtkTextMark *pager_position = gtk_text_buffer_get_mark(buffer, "pager_position"); + gtk_text_buffer_get_iter_at_mark(buffer, &input_iter, input_position); + gtk_text_buffer_move_mark(buffer, pager_position, &input_iter); +} diff --git a/libchimara/window.c b/libchimara/window.c index 77c916e..94042d1 100644 --- a/libchimara/window.c +++ b/libchimara/window.c @@ -559,7 +559,7 @@ glk_window_open(winid_t split, glui32 method, glui32 size, glui32 wintype, win->pager_keypress_handler = g_signal_connect( textview, "key-press-event", G_CALLBACK(pager_on_key_press_event), win ); g_signal_handler_block(textview, win->pager_keypress_handler); GtkAdjustment *adj = gtk_scrolled_window_get_vadjustment(GTK_SCROLLED_WINDOW(scrolledwindow)); - g_signal_connect_after(adj, "value-changed", G_CALLBACK(pager_after_adjustment_changed), win); + win->pager_adjustment_handler = g_signal_connect_after(adj, "value-changed", G_CALLBACK(pager_after_adjustment_changed), win); /* Char and line input */ win->char_input_keypress_handler = g_signal_connect( textview, "key-press-event", G_CALLBACK(on_char_input_key_press_event), win ); @@ -585,7 +585,8 @@ glk_window_open(winid_t split, glui32 method, glui32 size, glui32 wintype, /* Create the pager position mark; it stands for the last character in the buffer that has been on-screen */ - gtk_text_buffer_create_mark(textbuffer, "pager_position", &end, TRUE); + GtkTextMark *pager_position = gtk_text_buffer_create_mark(textbuffer, "pager_position", &end, TRUE); + gtk_text_mark_set_visible(pager_position, TRUE); } break; diff --git a/libchimara/window.h b/libchimara/window.h index e135496..bb9a2f6 100644 --- a/libchimara/window.h +++ b/libchimara/window.h @@ -79,6 +79,7 @@ struct glk_window_struct gulong size_allocate_handler; gulong pager_expose_handler; gulong pager_keypress_handler; + gulong pager_adjustment_handler; /* Window buffer */ GString *buffer; /* Hyperlinks */