Add an unnecessarily fancy about dialog
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A0420B94F92B9493
@ -989,7 +989,7 @@ fiv_browser_button_press_event(GtkWidget *widget, GdkEventButton *event)
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}
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}
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gboolean
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static gboolean
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fiv_browser_motion_notify_event(GtkWidget *widget, GdkEventMotion *event)
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{
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GTK_WIDGET_CLASS(fiv_browser_parent_class)
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257
fiv.c
257
fiv.c
@ -206,6 +206,252 @@ make_key_window(void)
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return window;
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}
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// --- About -------------------------------------------------------------------
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static void
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on_about_map(GtkWidget *widget, G_GNUC_UNUSED gpointer user_data)
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{
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GdkFrameClock *clock = gtk_widget_get_frame_clock(widget);
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(void) g_signal_connect_swapped(
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clock, "update", G_CALLBACK(gtk_widget_queue_draw), widget);
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gdk_frame_clock_begin_updating(clock);
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}
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static void
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on_about_unmap(GtkWidget *widget, G_GNUC_UNUSED gpointer user_data)
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{
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GdkFrameClock *clock = gtk_widget_get_frame_clock(widget);
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gdk_frame_clock_end_updating(clock);
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}
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static gint g_about_x, g_about_y;
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static gboolean
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on_about_motion(G_GNUC_UNUSED GtkWidget *widget, GdkEventMotion *event,
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G_GNUC_UNUSED gpointer user_data)
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{
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g_about_x = event->x;
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g_about_y = event->y;
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return FALSE;
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}
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static gboolean
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on_about_leave(G_GNUC_UNUSED GtkWidget *widget,
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G_GNUC_UNUSED GdkEventCrossing *event, G_GNUC_UNUSED gpointer user_data)
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{
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g_about_x = 0;
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g_about_y = 0;
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return FALSE;
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}
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enum { ABOUT_SIZE = 48, ABOUT_SCALE = 3, ABOUT_HEIGHT = ABOUT_SIZE * 4 / 3 };
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// The mismatching resolution is incidental, and kept for interesting looks.
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cairo_pattern_t *
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make_infinite_v_pattern(void)
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{
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cairo_surface_t *surface =
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cairo_image_surface_create(CAIRO_FORMAT_ARGB32, ABOUT_SIZE, ABOUT_SIZE);
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cairo_t *cr = cairo_create(surface);
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cairo_move_to(cr, 2, 7);
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cairo_rel_line_to(cr, 44, 0);
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cairo_rel_line_to(cr, -17, 39);
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cairo_rel_line_to(cr, -10, 0);
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cairo_close_path(cr);
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cairo_pattern_t *gradient = cairo_pattern_create_linear(0, 7, 0, 46);
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cairo_pattern_add_color_stop_rgba(gradient, 1, 1, 0x66 / 255., 0, 1);
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cairo_pattern_add_color_stop_rgba(gradient, 0, 1, 0xaa / 255., 0, 1);
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cairo_set_source(cr, gradient);
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cairo_fill(cr);
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cairo_destroy(cr);
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cairo_pattern_t *pattern = cairo_pattern_create_for_surface(surface);
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cairo_surface_destroy(surface);
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cairo_pattern_set_extend(pattern, CAIRO_EXTEND_REPEAT);
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cairo_pattern_set_filter(pattern, CAIRO_FILTER_NEAREST);
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cairo_matrix_t matrix = {};
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cairo_matrix_init_translate(&matrix, ABOUT_SIZE / 2, 0);
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cairo_pattern_set_matrix(pattern, &matrix);
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return pattern;
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}
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static void
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draw_ligature(cairo_t *cr)
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{
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// Transcribed fiv.svg--it would arguably make more sense to generate
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// that file and these Cairo instructions from the same source.
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cairo_move_to(cr, 12.5, 20.5);
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cairo_rel_line_to(cr, -4, 0);
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cairo_rel_line_to(cr, 0, +5);
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cairo_rel_line_to(cr, +4, 0);
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cairo_rel_line_to(cr, 0, +15);
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cairo_rel_line_to(cr, 9, 0);
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cairo_rel_line_to(cr, 0, -15);
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cairo_rel_line_to(cr, +2, 0);
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cairo_rel_line_to(cr, 0, -5);
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cairo_rel_line_to(cr, -2, 0);
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cairo_rel_line_to(cr, 0, -8);
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cairo_rel_curve_to(cr, 0, -4, 5, -4, 5, 0);
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cairo_rel_curve_to(cr, 0, 6, 9, 6, 9, 0);
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cairo_rel_curve_to(cr, 0, -12, -23, -12, -23, 0);
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cairo_close_path(cr);
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cairo_move_to(cr, 26.5, 20.5);
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cairo_rel_line_to(cr, 9, 0);
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cairo_rel_line_to(cr, 0, 20);
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cairo_rel_line_to(cr, -9, 0);
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cairo_close_path(cr);
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cairo_path_t *ligature = cairo_copy_path(cr);
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cairo_save(cr);
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cairo_clip(cr);
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// Shadow approximation, given the lack of filters in Cairo.
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enum { STEPS = 5 };
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for (int i = 0; i <= STEPS; i++) {
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cairo_save(cr);
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double o = 1. / ABOUT_SCALE + 1. / ABOUT_SCALE * i;
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cairo_translate(cr, o, o);
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cairo_append_path(cr, ligature);
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double v = 1 - (STEPS - i) * 0.075;
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cairo_set_source_rgb(cr, v, v, v);
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cairo_fill(cr);
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cairo_restore(cr);
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}
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cairo_restore(cr);
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cairo_append_path(cr, ligature);
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cairo_path_destroy(ligature);
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cairo_set_source_rgb(cr, 0, 0, 0);
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cairo_set_line_width(cr, 1);
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cairo_stroke(cr);
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}
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static gboolean
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on_about_draw(GtkWidget *widget, cairo_t *cr, G_GNUC_UNUSED gpointer user_data)
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{
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GtkAllocation allocation;
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gtk_widget_get_allocation(widget, &allocation);
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GtkStyleContext *style = gtk_widget_get_style_context(widget);
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gtk_render_background(style, cr, 0, 0, allocation.width, allocation.height);
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cairo_translate(cr, (allocation.width - ABOUT_SIZE * ABOUT_SCALE) / 2,
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ABOUT_SIZE * ABOUT_SCALE / 4);
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cairo_scale(cr, ABOUT_SCALE, ABOUT_SCALE);
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cairo_save(cr);
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cairo_translate(cr, ABOUT_SIZE / 2, ABOUT_SIZE / 2);
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if (g_about_x && g_about_y) {
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gint dx = g_about_x - allocation.width / 2;
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gint dy = g_about_y - ABOUT_SIZE * ABOUT_SCALE * 3 / 4;
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cairo_rotate(cr, atan2(dy, dx) - M_PI_2);
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}
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GdkFrameClock *clock = gtk_widget_get_frame_clock(widget);
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gint64 t = gdk_frame_clock_get_frame_time(clock);
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cairo_translate(cr, 0, (gint64) (t / 4e4) % ABOUT_SIZE);
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cairo_pattern_t *v = make_infinite_v_pattern();
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cairo_set_source(cr, v);
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cairo_paint(cr);
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cairo_save(cr);
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cairo_translate(cr, ABOUT_SIZE / 2, 14 /* Through trial and error. */);
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cairo_scale(cr, 1, -1);
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cairo_set_source(cr, v);
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cairo_paint(cr);
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cairo_restore(cr);
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cairo_pattern_destroy(v);
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cairo_restore(cr);
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draw_ligature(cr);
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return TRUE;
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}
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static GtkWidget *
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make_about_dialog(GtkWidget *parent)
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{
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GtkWidget *dialog = gtk_widget_new(GTK_TYPE_DIALOG, "use-header-bar", TRUE,
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"title", "About", "transient-for", parent, "destroy-with-parent", TRUE,
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NULL);
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GtkWidget *area = gtk_drawing_area_new();
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gtk_style_context_add_class(gtk_widget_get_style_context(area), "view");
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gtk_widget_set_size_request(
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area, ABOUT_SIZE * ABOUT_SCALE * 2, ABOUT_HEIGHT * ABOUT_SCALE);
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gtk_widget_add_events(
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area, GDK_POINTER_MOTION_MASK | GDK_LEAVE_NOTIFY_MASK);
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g_signal_connect(
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area, "motion-notify-event", G_CALLBACK(on_about_motion), NULL);
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g_signal_connect(
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area, "leave-notify-event", G_CALLBACK(on_about_leave), NULL);
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g_signal_connect(area, "draw", G_CALLBACK(on_about_draw), NULL);
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g_signal_connect(area, "map", G_CALLBACK(on_about_map), NULL);
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g_signal_connect(area, "unmap", G_CALLBACK(on_about_unmap), NULL);
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// The rest is approximately copying GTK+'s own gtkaboutdialog.ui.
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GtkWidget *name = gtk_label_new(NULL);
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gtk_label_set_selectable(GTK_LABEL(name), TRUE);
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gtk_label_set_markup(
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GTK_LABEL(name), "<b>" PROJECT_NAME "</b> " PROJECT_VERSION);
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GtkWidget *website = gtk_label_new(NULL);
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gtk_label_set_selectable(GTK_LABEL(website), TRUE);
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const char *url = "https://git.janouch.name/p/fiv";
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gchar *link = g_strdup_printf("<a href='%s'>%s</a>", url, url);
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gtk_label_set_markup(GTK_LABEL(website), link);
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g_free(link);
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GtkWidget *sw = gtk_scrolled_window_new(NULL, NULL);
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gtk_scrolled_window_set_policy(
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GTK_SCROLLED_WINDOW(sw), GTK_POLICY_NEVER, GTK_POLICY_AUTOMATIC);
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gtk_scrolled_window_set_shadow_type(GTK_SCROLLED_WINDOW(sw), GTK_SHADOW_IN);
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GtkWidget *viewer = gtk_text_view_new();
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gtk_text_view_set_editable(GTK_TEXT_VIEW(viewer), FALSE);
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gtk_text_view_set_cursor_visible(GTK_TEXT_VIEW(viewer), FALSE);
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gtk_text_view_set_left_margin(GTK_TEXT_VIEW(viewer), 8);
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gtk_text_view_set_right_margin(GTK_TEXT_VIEW(viewer), 8);
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gtk_container_add(GTK_CONTAINER(sw), viewer);
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GBytes *license =
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g_resources_lookup_data("/LICENSE", G_RESOURCE_LOOKUP_FLAGS_NONE, NULL);
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g_return_val_if_fail(license != NULL, dialog);
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gchar *escaped = g_markup_escape_text(g_bytes_get_data(license, NULL), -1);
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g_bytes_unref(license);
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GtkTextBuffer *buffer = gtk_text_view_get_buffer(GTK_TEXT_VIEW(viewer));
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gchar *formatted = g_strdup_printf("<small>%s</small>", escaped);
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g_free(escaped);
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GtkTextIter iter = {};
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gtk_text_buffer_get_start_iter(buffer, &iter);
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gtk_text_buffer_insert_markup(buffer, &iter, formatted, -1);
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g_free(formatted);
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enum { SUBBOX_MARGIN = 12 /* Roughly matches. */ };
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GtkWidget *subbox = gtk_box_new(GTK_ORIENTATION_VERTICAL, 12);
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gtk_widget_set_margin_start(subbox, SUBBOX_MARGIN);
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gtk_widget_set_margin_end(subbox, SUBBOX_MARGIN);
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gtk_box_pack_start(GTK_BOX(subbox), name, FALSE, FALSE, 0);
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gtk_box_pack_start(GTK_BOX(subbox), website, FALSE, FALSE, 0);
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gtk_box_pack_start(GTK_BOX(subbox), sw, TRUE, TRUE, 0);
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GtkWidget *box = gtk_dialog_get_content_area(GTK_DIALOG(dialog));
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gtk_box_pack_start(GTK_BOX(box), area, FALSE, FALSE, 0);
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gtk_box_pack_end(GTK_BOX(box), subbox, TRUE, TRUE, SUBBOX_MARGIN);
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gtk_window_set_default_size(GTK_WINDOW(dialog), -1, 480);
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gtk_window_set_geometry_hints(GTK_WINDOW(dialog), NULL,
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&(GdkGeometry) {.max_width = -1, .max_height = G_MAXSHORT},
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GDK_HINT_MAX_SIZE);
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gtk_widget_grab_focus(viewer);
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return dialog;
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}
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// --- Main --------------------------------------------------------------------
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// TODO(p): See if it's possible to give separators room to shrink
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@ -820,6 +1066,17 @@ on_key_press(G_GNUC_UNUSED GtkWidget *widget, GdkEventKey *event,
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return TRUE;
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}
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break;
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case GDK_SHIFT_MASK:
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switch (event->keyval) {
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case GDK_KEY_F1: {
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GtkWidget *dialog = make_about_dialog(g.window);
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gtk_widget_show_all(dialog);
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gtk_dialog_run(GTK_DIALOG(dialog));
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gtk_widget_destroy(dialog);
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return TRUE;
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}
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}
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break;
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case 0:
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switch (event->keyval) {
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case GDK_KEY_Escape:
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@ -1,5 +1,8 @@
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<?xml version="1.0" encoding="UTF-8"?>
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<gresources>
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<gresource prefix="/">
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<file alias="LICENSE">../LICENSE</file>
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</gresource>
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<gresource prefix="/org/gnome/design/IconLibrary/scalable/actions/">
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<file preprocess="xml-stripblanks">circle-filled-symbolic.svg</file>
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<file preprocess="xml-stripblanks">funnel-symbolic.svg</file>
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