From d685da0473f678ce3cc2d0d52a83e13ecf4c52a5 Mon Sep 17 00:00:00 2001 From: Pierre-Luc Beaudoin Date: Fri, 15 Aug 2008 22:13:15 -0400 Subject: [PATCH] Working finger scroll --- src/champlain_widget.c | 103 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 103 insertions(+) diff --git a/src/champlain_widget.c b/src/champlain_widget.c index 9d3416f..c6eff33 100644 --- a/src/champlain_widget.c +++ b/src/champlain_widget.c @@ -26,6 +26,9 @@ #include "champlain-marshal.h" #include +#include +#include +#include #include #include #include @@ -236,6 +239,77 @@ champlain_widget_load_map (ChamplainWidget * champlainWidget) clutter_container_add_actor (CLUTTER_CONTAINER (priv->viewport), priv->map->current_level->group); } +static void +add_rects (ClutterGroup* stage) +{ + ClutterColor white; + clutter_color_parse("white", &white); + ClutterColor blue; + clutter_color_parse("blue", &blue); + + ClutterActor * rect = clutter_rectangle_new_with_color(&blue); + clutter_container_add(CLUTTER_CONTAINER(stage), rect, NULL); + clutter_actor_set_position (rect, 100, 100); + clutter_actor_set_size (rect, 100, 100); + clutter_actor_show(rect); + + rect = clutter_rectangle_new_with_color(&white); + clutter_container_add(CLUTTER_CONTAINER(stage), rect, NULL); + clutter_actor_set_position (rect, 100, 200); + clutter_actor_set_size (rect, 100, 100); + clutter_actor_show(rect); + + rect = clutter_rectangle_new_with_color(&blue); + clutter_container_add(CLUTTER_CONTAINER(stage), rect, NULL); + clutter_actor_set_position (rect, 200, 200); + clutter_actor_set_size (rect, 100, 100); + clutter_actor_show(rect); + + rect = clutter_rectangle_new_with_color(&white); + clutter_container_add(CLUTTER_CONTAINER(stage), rect, NULL); + clutter_actor_set_position (rect, 200, 100); + clutter_actor_set_size (rect, 100, 100); + clutter_actor_show(rect); + +} + +#define RECT_W 300 +#define RECT_H 300 +#define RECT_N 200 +#define RECT_GAP 50 +static void +viewport_x_origin_notify_cb (TidyViewport *viewport, + GParamSpec *args1, + ClutterActor *group) +{ + GList *children, *c; + gint origin_x, width; + + tidy_viewport_get_origin (viewport, &origin_x, NULL, NULL); + width = clutter_actor_get_width ( + clutter_actor_get_parent (CLUTTER_ACTOR (viewport))); + + children = clutter_container_get_children (CLUTTER_CONTAINER (group)); + for (c = children; c; c = c->next) + { + gint x; + gdouble pos; + ClutterActor *actor; + + actor = (ClutterActor *)c->data; + + /* Get actor position with respect to viewport origin */ + x = clutter_actor_get_x (actor) - origin_x; + pos = (((gdouble)x / (gdouble)(width-RECT_W)) - 0.5) * 2.0; + + /* Apply a function that transforms the actor depending on its + * viewport position. + */ + //pos = CLAMP(pos * 3.0, -0.5, 0.5); + clutter_actor_set_position (actor, pos, pos); + } + g_list_free (children); +} GtkWidget * champlain_widget_new () @@ -253,8 +327,37 @@ champlain_widget_new () clutter_stage_set_color (CLUTTER_STAGE (stage), &black); gtk_container_add (GTK_CONTAINER (widget), priv->clutterEmbed); + // Setup viewport + ClutterActor* viewport = tidy_viewport_new (); + clutter_actor_set_clip (viewport, 0, 0, 640, 480); + ClutterActor* group = clutter_group_new(); + add_rects (group); + clutter_actor_show_all(group); + clutter_container_add_actor (CLUTTER_CONTAINER (viewport), group); + g_signal_connect (viewport, "notify::x-origin", + G_CALLBACK (viewport_x_origin_notify_cb), group); + + gdouble lower, upper; + TidyAdjustment *hadjust, *vadjust; + g_object_set (G_OBJECT (viewport), "sync-adjustments", FALSE, NULL); + tidy_scrollable_get_adjustments (TIDY_SCROLLABLE (viewport), &hadjust, &vadjust); + tidy_adjustment_get_values (hadjust, NULL, &lower, &upper, NULL, NULL, NULL); + lower -= RECT_W - RECT_GAP; + upper += RECT_W - RECT_GAP; + g_object_set (hadjust, "lower", lower, "upper", upper, + "step-increment", (gdouble)RECT_GAP, "elastic", TRUE, NULL); + tidy_adjustment_get_values (vadjust, NULL, &lower, &upper, NULL, NULL, NULL); + lower -= RECT_W - RECT_GAP; + upper += RECT_W - RECT_GAP; + g_object_set (vadjust, "lower", lower, "upper", upper, + "step-increment", (gdouble)RECT_GAP, "elastic", TRUE, NULL); + + // Setup fingerscroll ClutterActor* finger_scroll = tidy_finger_scroll_new(TIDY_FINGER_SCROLL_MODE_PUSH); + g_object_set (finger_scroll, "decel-rate", 1.03, NULL); + clutter_container_add_actor (CLUTTER_CONTAINER (finger_scroll), viewport); clutter_container_add_actor (CLUTTER_CONTAINER (stage), finger_scroll); + clutter_actor_set_size (finger_scroll, 640, 480); // FIXME make as wide as the stage always return GTK_WIDGET (widget); } -- 2.39.5