1 /* -*- mode: c; c-basic-offset: 2 -*-
6 #include <cairo-xlib.h>
12 #include <librsvg/rsvg.h>
13 #include <librsvg/rsvg-cairo.h>
17 typedef struct Closure Closure;
22 int drag_offset_x, drag_offset_y;
23 int anchor_x, anchor_y;
28 timeout_callback (gpointer data)
30 Closure *closure = data;
33 for (i = 0; i < closure->num_icons; i++) {
34 gdk_window_move (closure->windows[i],
35 closure->model.objects[i + 1].position.x,
36 closure->model.objects[i + 1].position.y);
39 model_step (&closure->model, 0.1);
45 create_window (GdkScreen *screen, int x, int y, int width, int height)
47 GdkWindowAttr attributes;
50 attributes.wclass = GDK_INPUT_OUTPUT;
51 attributes.visual = gdk_screen_get_rgba_visual (screen);
52 attributes.colormap = gdk_screen_get_rgba_colormap (screen);
53 attributes.window_type = GDK_WINDOW_TEMP;
57 attributes.width = width;
58 attributes.height = height;
59 attributes.event_mask =
61 GDK_BUTTON_PRESS_MASK |
62 GDK_BUTTON_RELEASE_MASK |
63 GDK_ENTER_NOTIFY_MASK |
64 GDK_LEAVE_NOTIFY_MASK |
65 GDK_POINTER_MOTION_MASK |
66 GDK_POINTER_MOTION_HINT_MASK;
68 attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
70 return gdk_window_new (gdk_screen_get_root_window (screen),
71 &attributes, attributes_mask);
75 model_init_dock (Model *model, int num_items, int x, int y, int spacing)
77 const int num_objects = num_items + 1;
78 const int num_spacers = (num_objects - 1) * (num_objects - 2) / 2;
79 const int num_springs = num_objects - 1;
85 memset (model, 0, sizeof *model);
86 model->objects = g_new (Object, num_objects);
87 model->num_objects = num_objects;
88 model->springs = g_new (Spring, num_springs);
89 model->num_springs = num_springs;
90 model->spacers = g_new (Spacer, num_spacers);
91 model->num_spacers = num_spacers;
92 model->anchors = g_new (Anchor, 1);
93 model->num_anchors = 1;
96 model->polygons = g_new (Polygon, 1);
97 model->num_polygons = 1;
98 polygon_init_enclosing_rectangle (&model->polygons[0], 0, 0, 1024 - 50, y);
100 model->anchors[0].x = x;
101 model->anchors[0].y = y;
102 model->anchors[0].object = &model->objects[0];
104 object_init (&model->objects[0], x, y, 20);
106 object = &model->objects[1];
107 spring = model->springs;
108 spacer = model->spacers;
110 for (i = 1; i < num_objects; i++, object++) {
111 object_init (&model->objects[i], 200 + i * spacing / 2, 300, 3);
112 spring_init (spring++, &model->objects[0], object, spacing);
113 for (j = 1; j < num_objects - i; j++) {
114 spacer_init (spacer++, object, object + j, spacing);
119 static GdkFilterReturn
120 window_event (GdkXEvent *xevent, GdkEvent *event, gpointer data)
122 Closure *closure = data;
123 GdkModifierType state;
124 XEvent *ev = (XEvent *) xevent;
130 closure->drag_offset_x = ev->xbutton.x;
131 closure->drag_offset_y = ev->xbutton.y;
132 for (i = 0; i < closure->num_icons; i++) {
133 if (closure->windows[i] == event->any.window) {
134 object = &closure->model.objects[i + 1];
135 closure->model.mouse_anchor.x = object->position.x;
136 closure->model.mouse_anchor.y = object->position.y;
137 closure->model.mouse_anchor.object = object;
143 closure->model.mouse_anchor.object = NULL;
147 gdk_window_get_pointer (gdk_get_default_root_window(), &x, &y, &state);
148 closure->model.mouse_anchor.x = x + 0.5 - closure->drag_offset_x;
149 closure->model.mouse_anchor.y = y + 0.5 - closure->drag_offset_y;
150 if (closure->model.mouse_anchor.y > closure->anchor_y)
151 closure->model.mouse_anchor.y = closure->anchor_y;
158 return GDK_FILTER_CONTINUE;
161 static const char *icons[] = {
162 "svg/applications-office.svg",
163 "svg/camera-video.svg",
165 "svg/firefox-logo.svg",
166 "svg/gnome-dev-disc-dvdrom.svg",
167 "svg/gnome-terminal.svg",
168 "svg/help-browser.svg",
169 "svg/internet-group-chat.svg"
172 int main (int argc, char *argv[])
176 const int num_icons = G_N_ELEMENTS (icons);
177 int x, y, width, height, i;
179 RsvgDimensionData dimension;
181 const int screen_width = 1024, screen_height = 768, spacing = 50;
183 gtk_init (&argc, &argv);
187 screen = gdk_screen_get_default ();
189 closure.anchor_x = screen_width / 2;
190 closure.anchor_y = screen_height - 50;
191 closure.spacing = spacing;
192 closure.num_icons = num_icons;
193 closure.windows = g_new (GdkWindow *, num_icons);
194 for (i = 0; i < num_icons; i++) {
196 handle = rsvg_handle_new_from_file (icons[i], NULL);
197 rsvg_handle_get_dimensions (handle, &dimension);
199 x = (screen_width - spacing * num_icons) / 2 + i * spacing;
200 y = closure.anchor_y;
201 width = dimension.width;
202 height = dimension.height;
203 closure.windows[i] = create_window (screen, x, y, width, height);
205 gdk_window_show (closure.windows[i]);
207 cr = gdk_cairo_create (closure.windows[i]);
208 cairo_set_operator (cr, CAIRO_OPERATOR_CLEAR);
210 cairo_set_operator (cr, CAIRO_OPERATOR_OVER);
211 rsvg_handle_render_cairo (handle, cr);
212 rsvg_handle_free (handle);
215 gdk_window_add_filter (closure.windows[i], window_event, &closure);
218 model_init_dock (&closure.model, num_icons,
219 closure.anchor_x, closure.anchor_y, spacing);
220 g_timeout_add (20, timeout_callback, &closure);