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screenshotmanager: Implement SelectArea (#136)
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@ -69,6 +69,7 @@ gala_VALASOURCES = \
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Widgets/WindowSwitcher.vala \
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Widgets/WorkspaceClone.vala \
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Widgets/WorkspaceInsertThumb.vala \
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Widgets/SelectionArea.vala \
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$(NULL)
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nodist_gala_SOURCES = \
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@ -85,12 +85,16 @@ namespace Gala
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success = save_image (image, filename, out filename_used);
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}
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public void select_area (out int x, out int y, out int width, out int height) throws DBusError
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public async void select_area (out int x, out int y, out int width, out int height)
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{
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warning ("SelectArea not implemented");
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x = y = width = height = 0;
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var selection_area = new SelectionArea (wm);
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selection_area.closed.connect (() => Idle.add (select_area.callback));
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wm.ui_group.add (selection_area);
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selection_area.start_selection ();
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throw new DBusError.FAILED ("SelectArea not implemented");
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yield;
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selection_area.get_selection_rectangle (out x, out y, out width, out height);
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wm.ui_group.remove (selection_area);
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}
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static bool save_image (Cairo.ImageSurface image, string filename, out string used_filename)
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170
src/Widgets/SelectionArea.vala
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170
src/Widgets/SelectionArea.vala
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@ -0,0 +1,170 @@
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//
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// Copyright (C) 2017 Santiago León O., Adam Bieńkowski
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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//
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namespace Gala
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{
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public class SelectionArea : Clutter.Actor
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{
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public signal void closed ();
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public WindowManager wm { get; construct; }
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private ModalProxy? modal_proxy;
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private Gdk.Point start_point;
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private Gdk.Point end_point;
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private bool dragging = false;
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private bool clicked = false;
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public SelectionArea (WindowManager wm)
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{
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Object (wm: wm);
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}
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construct
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{
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start_point = { 0, 0 };
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end_point = { 0, 0 };
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visible = true;
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reactive = true;
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int screen_width, screen_height;
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wm.get_screen ().get_size (out screen_width, out screen_height);
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width = screen_width;
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height = screen_height;
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var canvas = new Clutter.Canvas ();
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canvas.set_size (screen_width, screen_height);
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canvas.draw.connect (draw_area);
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set_content (canvas);
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canvas.invalidate ();
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}
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public override bool key_press_event (Clutter.KeyEvent e)
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{
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if (e.keyval == Clutter.Key.Escape) {
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close ();
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closed ();
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return true;
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}
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return false;
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}
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public override bool button_press_event (Clutter.ButtonEvent e)
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{
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if (dragging || e.button != 1) {
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return true;
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}
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clicked = true;
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start_point.x = (int) e.x;
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start_point.y = (int) e.y;
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return true;
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}
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public override bool button_release_event (Clutter.ButtonEvent e)
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{
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if (e.button != 1) {
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return true;
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}
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if (!dragging) {
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close ();
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closed ();
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return true;
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}
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dragging = false;
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clicked = false;
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close ();
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this.hide ();
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content.invalidate ();
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closed ();
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return true;
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}
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public override bool motion_event (Clutter.MotionEvent e)
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{
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if (!clicked) {
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return true;
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}
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end_point.x = (int) e.x;
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end_point.y = (int) e.y;
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content.invalidate ();
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if (!dragging) {
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dragging = true;
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}
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return true;
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}
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public void close ()
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{
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wm.get_screen ().set_cursor (Meta.Cursor.DEFAULT);
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if (modal_proxy != null) {
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wm.pop_modal (modal_proxy);
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}
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}
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public void start_selection ()
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{
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wm.get_screen ().set_cursor (Meta.Cursor.CROSSHAIR);
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grab_key_focus ();
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modal_proxy = wm.push_modal ();
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}
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public void get_selection_rectangle (out int x, out int y, out int width, out int height)
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{
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x = int.min (start_point.x, end_point.x);
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y = int.min (start_point.y, end_point.y);
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width = (start_point.x - end_point.x).abs ();
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height = (start_point.y - end_point.y).abs ();
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}
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private bool draw_area (Cairo.Context ctx)
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{
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Clutter.cairo_clear (ctx);
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if (!dragging) {
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return true;
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}
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int x, y, w, h;
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get_selection_rectangle (out x, out y, out w, out h);
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ctx.rectangle (x, y, w, h);
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ctx.set_source_rgba (0.1, 0.1, 0.1, 0.2);
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ctx.fill ();
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ctx.rectangle (x, y, w, h);
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ctx.set_source_rgb (0.7, 0.7, 0.7);
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ctx.set_line_width (1.0);
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ctx.stroke ();
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return true;
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}
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}
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}
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