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/*
Copyright (c) 2011 by Simon Schneegans
This program is free software: you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the Free
Software Foundation, either version 3 of the License, or (at your option)
any later version.
This program is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
more details.
You should have received a copy of the GNU General Public License along with
this program. If not, see <http://www.gnu.org/licenses/>.
*/
using GLib.Math;
namespace GnomePie {
// An invisible window. Used to draw Pies onto.
public class PieWindow : Gtk.Window {
public signal void on_closing();
private PieRenderer renderer;
private bool closing = false;
private GLib.Timer timer;
private bool has_compositing = false;
private Image background = null;
public PieWindow() {
this.renderer = new PieRenderer();
this.set_title("Gnome-Pie");
this.set_skip_taskbar_hint(true);
this.set_skip_pager_hint(true);
this.set_keep_above(true);
this.set_type_hint(Gdk.WindowTypeHint.SPLASHSCREEN);
this.set_decorated(false);
this.set_resizable(false);
this.icon_name = "gnome-pie";
this.set_accept_focus(false);
if (this.screen.is_composited()) {
this.set_colormap(this.screen.get_rgba_colormap());
this.has_compositing = true;
}
this.add_events(Gdk.EventMask.BUTTON_RELEASE_MASK |
Gdk.EventMask.KEY_RELEASE_MASK |
Gdk.EventMask.KEY_PRESS_MASK |
Gdk.EventMask.POINTER_MOTION_MASK);
this.button_release_event.connect ((e) => {
if (e.button == 1) this.activate_slice();
else this.cancel();
return true;
});
// remember last pressed key in order to disable key repeat
uint last_key = 0;
this.key_press_event.connect((e) => {
if (e.keyval != last_key) {
last_key = e.keyval;
this.handle_key_press(e.keyval);
}
return true;
});
this.key_release_event.connect((e) => {
last_key = 0;
if (Config.global.turbo_mode)
this.activate_slice();
else
this.handle_key_release(e.keyval);
return true;
});
this.motion_notify_event.connect((e) => {
this.renderer.on_mouse_move();
return true;
});
this.expose_event.connect(this.draw);
}
public void load_pie(Pie pie) {
this.renderer.load_pie(pie);
this.set_window_position();
this.set_size_request(renderer.get_size(), renderer.get_size());
}
public void open() {
this.realize();
if (!this.has_compositing) {
int x, y, width, height;
this.get_position(out x, out y);
this.get_size(out width, out height);
this.background = new Image.capture_screen(x, y, width+1, height+1);
}
this.show();
this.fix_focus();
this.timer = new GLib.Timer();
this.timer.start();
this.queue_draw();
Timeout.add((uint)(1000.0/Config.global.refresh_rate), () => {
this.queue_draw();
return this.visible;
});
}
private bool draw(Gtk.Widget da, Gdk.EventExpose event) {
// clear the window
var ctx = Gdk.cairo_create(this.window);
if (this.has_compositing) {
ctx.set_operator (Cairo.Operator.CLEAR);
ctx.paint();
ctx.set_operator (Cairo.Operator.OVER);
} else {
ctx.set_operator (Cairo.Operator.OVER);
ctx.set_source_surface(background.surface, -1, -1);
ctx.paint();
}
ctx.translate(this.width_request*0.5, this.height_request*0.5);
double mouse_x = 0.0, mouse_y = 0.0;
this.get_pointer(out mouse_x, out mouse_y);
double frame_time = this.timer.elapsed();
this.timer.reset();
this.renderer.draw(frame_time, ctx, (int)(mouse_x - this.width_request*0.5),
(int)(mouse_y - this.height_request*0.5));
return true;
}
private void activate_slice() {
if (!this.closing) {
this.closing = true;
this.on_closing();
this.unfix_focus();
this.renderer.activate();
Timeout.add((uint)(Config.global.theme.fade_out_time*1000), () => {
this.destroy();
//ThemedIcon.clear_cache();
return false;
});
}
}
private void cancel() {
if (!this.closing) {
this.closing = true;
this.on_closing();
this.unfix_focus();
this.renderer.cancel();
Timeout.add((uint)(Config.global.theme.fade_out_time*1000), () => {
this.destroy();
//ThemedIcon.clear_cache();
return false;
});
}
}
private void set_window_position() {
if(Config.global.open_at_mouse) this.set_position(Gtk.WindowPosition.MOUSE);
else this.set_position(Gtk.WindowPosition.CENTER);
}
private void handle_key_press(uint key) {
if (Gdk.keyval_name(key) == "Escape") this.cancel();
else if (Gdk.keyval_name(key) == "Return") this.activate_slice();
else if (!Config.global.turbo_mode) {
if (Gdk.keyval_name(key) == "Up") this.renderer.select_up();
else if (Gdk.keyval_name(key) == "Down") this.renderer.select_down();
else if (Gdk.keyval_name(key) == "Left") this.renderer.select_left();
else if (Gdk.keyval_name(key) == "Right") this.renderer.select_right();
else if (Gdk.keyval_name(key) == "Alt_L") this.renderer.show_hotkeys = true;
else {
int index = -1;
if (key >= 48 && key <= 57) index = (int)key - 48;
else if (key >= 97 && key <= 122) index = (int)key - 87;
else if (key >= 65 && key <= 90) index = (int)key - 55;
if (index >= 0 && index < this.renderer.slice_count()) {
this.renderer.set_highlighted_slice(index);
if (this.renderer.active_slice == index) {
GLib.Timeout.add((uint)(Config.global.theme.transition_time*1000.0), ()=> {
this.activate_slice();
return false;
});
}
}
}
}
}
private void handle_key_release(uint key) {
if (!Config.global.turbo_mode) {
if (Gdk.keyval_name(key) == "Alt_L") this.renderer.show_hotkeys = false;
}
}
// utilities for grabbing focus
// Code from Gnome-Do/Synapse
private void fix_focus() {
uint32 timestamp = Gtk.get_current_event_time();
this.present_with_time(timestamp);
this.get_window().raise();
this.get_window().focus(timestamp);
int i = 0;
Timeout.add(100, () => {
if (++i >= 100) return false;
return !try_grab_window();
});
}
// Code from Gnome-Do/Synapse
private void unfix_focus() {
uint32 time = Gtk.get_current_event_time();
Gdk.pointer_ungrab(time);
Gdk.keyboard_ungrab(time);
Gtk.grab_remove(this);
}
// Code from Gnome-Do/Synapse
private bool try_grab_window() {
uint time = Gtk.get_current_event_time();
if (Gdk.pointer_grab(this.get_window(), true, Gdk.EventMask.BUTTON_PRESS_MASK |
Gdk.EventMask.BUTTON_RELEASE_MASK | Gdk.EventMask.POINTER_MOTION_MASK,
null, null, time) == Gdk.GrabStatus.SUCCESS) {
if (Gdk.keyboard_grab(this.get_window(), true, time) == Gdk.GrabStatus.SUCCESS) {
Gtk.grab_add(this);
return true;
} else {
Gdk.pointer_ungrab(time);
return false;
}
}
return false;
}
}
}
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