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_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;
80 const int spread = spacing + 20;
86 memset (model, 0, sizeof *model);
87 model->objects = g_new (Object, num_objects);
88 model->num_objects = num_objects;
89 model->springs = g_new (Spring, num_springs);
90 model->num_springs = num_springs;
91 model->spacers = g_new (Spacer, num_spacers);
92 model->num_spacers = num_spacers;
93 model->anchors = g_new (Anchor, 1);
94 model->num_anchors = 1;
97 model->polygons = g_new (Polygon, 1);
98 model->num_polygons = 1;
99 polygon_init_enclosing_rectangle (&model->polygons[0], 0, 0, 1024 - 50, y);
101 model->anchors[0].x = x;
102 model->anchors[0].y = y;
103 model->anchors[0].object = &model->objects[0];
105 object_init (&model->objects[0], x, y, 0);
107 object = &model->objects[1];
108 spring = model->springs;
109 spacer = model->spacers;
110 left_edge = (1024 - (num_items - 1) * spread) / 2;
112 for (i = 1; i < num_objects; i++, object++) {
113 object_init (&model->objects[i], left_edge + (i - 1) * spread, y - 100, 1);
114 spring_init (spring++, &model->objects[0], object, spacing);
115 for (j = 1; j < num_objects - i; j++) {
116 spacer_init (spacer++, object, object + j, spacing);
121 static GdkFilterReturn
122 window_event (GdkXEvent *xevent, GdkEvent *event, gpointer data)
124 Closure *closure = data;
125 GdkModifierType state;
126 XEvent *ev = (XEvent *) xevent;
132 closure->drag_offset_x = ev->xbutton.x;
133 closure->drag_offset_y = ev->xbutton.y;
134 for (i = 0; i < closure->num_icons; i++) {
135 if (closure->windows[i] == event->any.window) {
136 object = &closure->model.objects[i + 1];
137 closure->model.mouse_anchor.x = object->position.x;
138 closure->model.mouse_anchor.y = object->position.y;
139 closure->model.mouse_anchor.object = object;
145 closure->model.mouse_anchor.object = NULL;
149 gdk_window_get_pointer (gdk_get_default_root_window(), &x, &y, &state);
150 closure->model.mouse_anchor.x = x - closure->drag_offset_x;
151 closure->model.mouse_anchor.y = y - closure->drag_offset_y;
152 if (closure->model.mouse_anchor.y > closure->anchor_y)
153 closure->model.mouse_anchor.y = closure->anchor_y;
160 return GDK_FILTER_CONTINUE;
163 static const char *icons[] = {
164 "svg/applications-office.svg",
165 "svg/camera-video.svg",
167 "svg/firefox-logo.svg",
168 "svg/gnome-dev-disc-dvdrom.svg",
169 "svg/gnome-terminal.svg",
170 "svg/help-browser.svg",
171 "svg/internet-group-chat.svg"
174 int main (int argc, char *argv[])
178 const int num_icons = G_N_ELEMENTS (icons);
179 int x, y, width, height, i;
181 RsvgDimensionData dimension;
183 const int screen_width = 1024, screen_height = 768, spacing = 50;
185 gtk_init (&argc, &argv);
189 screen = gdk_screen_get_default ();
191 closure.anchor_x = screen_width / 2;
192 closure.anchor_y = screen_height - 50;
193 closure.spacing = spacing;
194 closure.num_icons = num_icons;
195 closure.windows = g_new (GdkWindow *, num_icons);
197 model_init_dock (&closure.model, num_icons,
198 closure.anchor_x, closure.anchor_y, spacing);
200 for (i = 0; i < num_icons; i++) {
202 handle = rsvg_handle_new_from_file (icons[i], NULL);
203 rsvg_handle_get_dimensions (handle, &dimension);
205 x = closure.model.objects[i + 1].position.x;
206 y = closure.model.objects[i + 1].position.y;
207 width = dimension.width;
208 height = dimension.height;
209 closure.windows[i] = create_window (screen, x, y, width, height);
211 gdk_window_show (closure.windows[i]);
213 cr = gdk_cairo_create (closure.windows[i]);
214 cairo_set_operator (cr, CAIRO_OPERATOR_CLEAR);
216 cairo_set_operator (cr, CAIRO_OPERATOR_OVER);
217 rsvg_handle_render_cairo (handle, cr);
218 rsvg_handle_free (handle);
221 gdk_window_add_filter (closure.windows[i], window_event, &closure);
224 g_timeout_add (20, timeout_callback, &closure);