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 + 0.5,
36 closure->model.objects[i + 1].position.y + 0.5);
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_HINT_MASK;
67 attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
69 return gdk_window_new (gdk_screen_get_root_window (screen),
70 &attributes, attributes_mask);
74 model_init_dock (Model *model, int num_items, int x, int y, int spacing)
76 const int num_objects = num_items + 1;
77 const int num_spacers = (num_objects - 1) * (num_objects - 2) / 2;
78 const int num_springs = num_objects - 1;
84 memset (model, 0, sizeof *model);
85 model->objects = g_new (Object, num_objects);
86 model->num_objects = num_objects;
87 model->springs = g_new (Spring, num_springs);
88 model->num_springs = num_springs;
89 model->spacers = g_new (Spacer, num_spacers);
90 model->num_spacers = num_spacers;
91 model->anchors = g_new (Anchor, 1);
92 model->num_anchors = 1;
95 model->polygons = g_new (Polygon, 1);
96 model->num_polygons = 1;
97 polygon_init_enclosing_rectangle (&model->polygons[0], 0, 0, 1024 - 50, y);
99 model->anchors[0].x = x;
100 model->anchors[0].y = y;
101 model->anchors[0].object = &model->objects[0];
103 object_init (&model->objects[0], x, y, 20);
105 object = &model->objects[1];
106 spring = model->springs;
107 spacer = model->spacers;
109 for (i = 1; i < num_objects; i++, object++) {
110 object_init (&model->objects[i], 200 + i * spacing / 2, 300, 1);
111 spring_init (spring++, &model->objects[0], object, spacing);
112 for (j = 1; j < num_objects - i; j++) {
113 spacer_init (spacer++, object, object + j, spacing);
118 static GdkFilterReturn
119 window_event (GdkXEvent *xevent, GdkEvent *event, gpointer data)
121 Closure *closure = data;
122 GdkModifierType state;
123 XEvent *ev = (XEvent *) xevent;
129 closure->drag_offset_x = ev->xbutton.x;
130 closure->drag_offset_y = ev->xbutton.y;
131 for (i = 0; i < closure->num_icons; i++) {
132 if (closure->windows[i] == event->any.window) {
133 object = &closure->model.objects[i + 1];
134 closure->model.mouse_anchor.x = object->position.x;
135 closure->model.mouse_anchor.y = object->position.y;
136 closure->model.mouse_anchor.object = object;
142 closure->model.mouse_anchor.object = NULL;
146 gdk_window_get_pointer (gdk_get_default_root_window(), &x, &y, &state);
147 closure->model.mouse_anchor.x = x + 0.5 - closure->drag_offset_x;
148 closure->model.mouse_anchor.y = y + 0.5 - closure->drag_offset_y;
149 if (closure->model.mouse_anchor.y > closure->anchor_y)
150 closure->model.mouse_anchor.y = closure->anchor_y;
157 return GDK_FILTER_CONTINUE;
160 static const char *icons[] = {
161 "svg/applications-office.svg",
162 "svg/camera-video.svg",
164 "svg/firefox-logo.svg",
165 "svg/gnome-dev-disc-dvdrom.svg",
166 "svg/gnome-terminal.svg",
167 "svg/help-browser.svg",
168 "svg/internet-group-chat.svg"
171 int main (int argc, char *argv[])
175 const int num_icons = G_N_ELEMENTS (icons);
176 int x, y, width, height, i;
178 RsvgDimensionData dimension;
180 const int screen_width = 1024, screen_height = 768, spacing = 50;
182 gtk_init (&argc, &argv);
186 screen = gdk_screen_get_default ();
188 closure.anchor_x = screen_width / 2;
189 closure.anchor_y = screen_height - 50;
190 closure.spacing = spacing;
191 closure.num_icons = num_icons;
192 closure.windows = g_new (GdkWindow *, num_icons);
193 for (i = 0; i < num_icons; i++) {
195 handle = rsvg_handle_new_from_file (icons[i], NULL);
196 rsvg_handle_get_dimensions (handle, &dimension);
198 x = (screen_width - spacing * num_icons) / 2 + i * spacing;
199 y = closure.anchor_y;
200 width = dimension.width;
201 height = dimension.height;
202 closure.windows[i] = create_window (screen, x, y, width, height);
204 gdk_window_show (closure.windows[i]);
206 cr = gdk_cairo_create (closure.windows[i]);
207 cairo_set_operator (cr, CAIRO_OPERATOR_CLEAR);
209 cairo_set_operator (cr, CAIRO_OPERATOR_OVER);
210 rsvg_handle_render_cairo (handle, cr);
211 rsvg_handle_free (handle);
214 gdk_window_add_filter (closure.windows[i], window_event, &closure);
217 model_init_dock (&closure.model, num_icons,
218 closure.anchor_x, closure.anchor_y, spacing);
219 g_timeout_add (20, timeout_callback, &closure);