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https://github.com/brl/mutter.git
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159 lines
3.8 KiB
C
159 lines
3.8 KiB
C
#include <clutter/clutter.h>
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#include <math.h>
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#define TRAILS 0
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#define NHANDS 6
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#define WINWIDTH 800
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#define WINHEIGHT 800
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#define RADIUS 250
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typedef struct SuperOH
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{
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ClutterElement *hand[NHANDS], *bgtex;
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ClutterGroup *group;
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GdkPixbuf *bgpixb;
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} SuperOH;
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/* input handler */
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void
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input_cb (ClutterStage *stage,
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ClutterEvent *event,
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gpointer data)
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{
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SuperOH *oh = (SuperOH *)data;
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if (event->type == CLUTTER_BUTTON_PRESS)
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{
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ClutterElement *e;
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e = clutter_stage_pick (stage,
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clutter_button_event_x(event),
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clutter_button_event_y(event));
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if (e)
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clutter_element_hide(e);
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}
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}
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/* Timeline handler */
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void
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frame_cb (ClutterTimeline *timeline,
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gint frame_num,
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gpointer data)
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{
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SuperOH *oh = (SuperOH *)data;
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gint i;
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#if TRAILS
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oh->bgpixb = clutter_stage_snapshot (CLUTTER_STAGE(clutter_stage()),
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0, 0, WINWIDTH, WINHEIGHT);
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clutter_texture_set_pixbuf(CLUTTER_TEXTURE(oh->bgtex), oh->bgpixb);
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g_object_unref(G_OBJECT(oh->bgpixb));
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#endif
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/* Rotate everything clockwise about stage center*/
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clutter_element_rotate_z (CLUTTER_ELEMENT(oh->group),
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frame_num,
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WINWIDTH/2,
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WINHEIGHT/2);
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for (i = 0; i < NHANDS; i++)
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{
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/* rotate each hand around there centers */
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clutter_element_rotate_z (oh->hand[i],
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- 6.0 * frame_num,
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clutter_element_get_width (oh->hand[i])/2,
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clutter_element_get_height (oh->hand[i])/2);
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}
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/*
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clutter_element_rotate_x (CLUTTER_ELEMENT(oh->group),
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75.0,
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WINHEIGHT/2, 0);
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*/
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}
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int
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main (int argc, char *argv[])
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{
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ClutterTimeline *timeline;
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GdkPixbuf *pixbuf;
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SuperOH *oh;
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gint i;
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clutter_init (&argc, &argv);
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pixbuf = gdk_pixbuf_new_from_file ("redhand.png", NULL);
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if (!pixbuf)
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g_error("pixbuf load failed");
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/* Set our stage (window) size */
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clutter_element_set_size (CLUTTER_ELEMENT(clutter_stage()),
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WINWIDTH, WINHEIGHT);
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/* and its background color */
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clutter_stage_set_color (CLUTTER_STAGE(clutter_stage()), 0x61648cff);
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oh = g_new(SuperOH, 1);
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#if TRAILS
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oh->bgtex = clutter_texture_new();
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clutter_element_set_size (oh->bgtex, WINWIDTH, WINHEIGHT);
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clutter_element_set_opacity (oh->bgtex, 0x99);
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clutter_group_add (clutter_stage(), oh->bgtex);
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#endif
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/* create a new group to hold multiple elements in a group */
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oh->group = clutter_group_new();
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for (i = 0; i < NHANDS; i++)
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{
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gint x, y, w, h;
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/* Create a texture from pixbuf, then clone in to same resources */
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if (i == 0)
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oh->hand[i] = clutter_texture_new_from_pixbuf (pixbuf);
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else
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oh->hand[i] = clutter_clone_texture_new (CLUTTER_TEXTURE(oh->hand[0]));
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/* Place around a circle */
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w = clutter_element_get_width (oh->hand[0]);
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h = clutter_element_get_height (oh->hand[0]);
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x = WINWIDTH/2 + RADIUS * cos (i * M_PI / (NHANDS/2)) - w/2;
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y = WINHEIGHT/2 + RADIUS * sin (i * M_PI / (NHANDS/2)) - h/2;
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clutter_element_set_position (oh->hand[i], x, y);
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/* Add to our group group */
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clutter_group_add (oh->group, oh->hand[i]);
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}
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/* Add the group to the stage */
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clutter_group_add (clutter_stage(), CLUTTER_ELEMENT(oh->group));
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/* Show everying ( and map window ) */
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clutter_group_show_all (oh->group);
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clutter_group_show_all (clutter_stage());
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g_signal_connect (clutter_stage(), "input-event",
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G_CALLBACK (input_cb),
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oh);
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/* Create a timeline to manage animation */
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timeline = clutter_timeline_new (360, 60); /* num frames, fps */
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g_object_set(timeline, "loop", TRUE, 0); /* have it loop */
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/* fire a callback for frame change */
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g_signal_connect(timeline, "new-frame", G_CALLBACK (frame_cb), oh);
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/* and start it */
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clutter_timeline_start (timeline);
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clutter_main();
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return 0;
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}
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