2014-03-23 19:15:34 -04:00
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/*
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Copyright (C) 2014 Paul Davis
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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 2 of the License, or
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(at your option) any later version.
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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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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <iostream>
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#include <cmath>
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#include <algorithm>
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#include <pangomm/layout.h>
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#include "pbd/compose.h"
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#include "pbd/error.h"
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#include "pbd/stacktrace.h"
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#include "gtkmm2ext/utils.h"
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#include "gtkmm2ext/rgb_macros.h"
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#include "gtkmm2ext/gui_thread.h"
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#include "ardour/rc_configuration.h" // for widget prelight preference
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2014-03-26 12:37:09 -04:00
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#include "ardour_dropdown.h"
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2014-03-23 19:15:34 -04:00
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2016-07-14 14:44:52 -04:00
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#include "pbd/i18n.h"
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2014-03-23 19:15:34 -04:00
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#define REFLECTION_HEIGHT 2
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using namespace Gdk;
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using namespace Gtk;
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using namespace Glib;
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using namespace PBD;
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using namespace std;
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2014-03-26 12:37:09 -04:00
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ArdourDropdown::ArdourDropdown (Element e)
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2015-10-10 19:32:13 -04:00
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: _scrolling_disabled(false)
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2014-03-23 19:15:34 -04:00
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{
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2014-08-28 11:31:57 -04:00
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// signal_button_press_event().connect (sigc::mem_fun(*this, &ArdourDropdown::on_mouse_pressed));
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2016-08-07 12:43:39 -04:00
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_menu.signal_size_request().connect (sigc::mem_fun(*this, &ArdourDropdown::menu_size_request));
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2014-03-23 19:15:34 -04:00
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add_elements(e);
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add_elements(ArdourButton::Menu);
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}
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2014-03-26 12:37:09 -04:00
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ArdourDropdown::~ArdourDropdown ()
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2014-03-23 19:15:34 -04:00
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{
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}
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2016-08-07 12:43:39 -04:00
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void
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ArdourDropdown::menu_size_request(Requisition *req) {
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req->width = max(req->width, get_allocation().get_width());
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}
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2016-08-07 10:14:59 -04:00
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void
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ArdourDropdown::position_menu(int& x, int& y, bool& push_in) {
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2016-08-07 11:20:43 -04:00
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using namespace Menu_Helpers;
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2016-08-07 10:14:59 -04:00
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/* TODO: lacks support for rotated dropdown buttons */
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if (!has_screen () || !get_has_window ()) {
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return;
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}
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Rectangle monitor;
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{
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const int monitor_num = get_screen ()->get_monitor_at_window (get_window ());
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get_screen ()->get_monitor_geometry ((monitor_num < 0) ? 0 : monitor_num,
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monitor);
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}
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const Requisition menu_req = _menu.size_request();
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const Rectangle allocation = get_allocation();
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/* The x and y position are handled separately.
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*
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* For the x position if the direction is LTR (or RTL), then we try in order:
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* a) align the left (right) of the menu with the left (right) of the button
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* if there's enough room until the right (left) border of the screen;
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* b) align the right (left) of the menu with the right (left) of the button
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* if there's enough room until the left (right) border of the screen;
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* c) align the right (left) border of the menu with the right (left) border
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* of the screen if there's enough space;
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* d) align the left (right) border of the menu with the left (right) border
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* of the screen, with the rightmost (leftmost) part of the menu that
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* overflows the screen.
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* XXX We always align left regardless of the direction because if x is
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* left of the current monitor, the menu popup code after us notices it
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* and enforces that the menu stays in the monitor that's at the left...*/
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get_window ()->get_origin (x, y);
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if (get_direction() == TEXT_DIR_RTL) {
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if (monitor.get_x() <= x + allocation.get_width() - menu_req.width) {
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/* a) align menu right and button right */
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x += allocation.get_width() - menu_req.width;
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} else if (x + menu_req.width <= monitor.get_x() + monitor.get_width()) {
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/* b) align menu left and button left: nothing to do*/
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} else if (menu_req.width > monitor.get_width()) {
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/* c) align menu left and screen left, guaranteed to fit */
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x = monitor.get_x();
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} else {
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/* d) XXX align left or the menu might change monitors */
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x = monitor.get_x();
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}
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} else { /* LTR */
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if (x + menu_req.width <= monitor.get_x() + monitor.get_width()) {
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/* a) align menu left and button left: nothing to do*/
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} else if (monitor.get_x() <= x + allocation.get_width() - menu_req.width) {
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/* b) align menu right and button right */
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x += allocation.get_width() - menu_req.width;
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} else if (menu_req.width > monitor.get_width()) {
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/* c) align menu right and screen right, guaranteed to fit */
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x = monitor.get_x() + monitor.get_width() - menu_req.width;
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} else {
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/* d) align left */
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x = monitor.get_x();
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}
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}
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/* For the y position, try in order:
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2016-08-07 11:20:43 -04:00
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* a) if there is a menu item with the same text as the button, align it
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* with the button, unless that makes the menu overflow the monitor.
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* b) align the top of the menu with the bottom of the button if there is
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2016-08-07 10:14:59 -04:00
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* enough room below the button;
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2016-08-07 11:20:43 -04:00
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* c) align the bottom of the menu with the top of the button if there is
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2016-08-07 10:14:59 -04:00
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* enough room above the button;
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2016-08-07 11:20:43 -04:00
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* d) align the bottom of the menu with the bottom of the monitor if there
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2016-08-07 10:14:59 -04:00
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* is enough room, but avoid moving the menu to another monitor */
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2016-08-07 11:20:43 -04:00
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const MenuList& items = _menu.items ();
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const std::string button_text = get_text();
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int offset = 0;
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MenuList::const_iterator i = items.begin();
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for ( ; i != items.end(); ++i) {
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if (button_text == ((std::string) i->get_label())) {
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break;
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}
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offset += i->size_request().height;
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}
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if (i != items.end() &&
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y - offset >= monitor.get_y() &&
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y - offset + menu_req.height <= monitor.get_y() + monitor.get_height()) {
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y -= offset;
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} else if (y + allocation.get_height() + menu_req.height <= monitor.get_y() + monitor.get_height()) {
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2016-08-07 10:14:59 -04:00
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y += allocation.get_height(); /* a) */
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} else if ((y - menu_req.height) >= monitor.get_y()) {
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y -= menu_req.height; /* b) */
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} else {
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y = monitor.get_y() + max(0, monitor.get_height() - menu_req.height);
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}
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2016-08-07 10:17:39 -04:00
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push_in = false;
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2016-08-07 10:14:59 -04:00
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}
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2014-03-23 19:15:34 -04:00
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bool
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2015-05-02 18:58:54 -04:00
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ArdourDropdown::on_button_press_event (GdkEventButton* ev)
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2014-03-23 19:15:34 -04:00
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{
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2015-05-02 18:58:54 -04:00
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if (ev->type == GDK_BUTTON_PRESS) {
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2016-08-07 10:14:59 -04:00
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_menu.popup (sigc::mem_fun(this, &ArdourDropdown::position_menu),
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1, ev->time);
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2015-05-02 18:58:54 -04:00
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}
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return true;
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}
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bool
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ArdourDropdown::on_scroll_event (GdkEventScroll* ev)
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{
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using namespace Menu_Helpers;
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2015-10-10 19:32:13 -04:00
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if (_scrolling_disabled) {
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return false;
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}
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2015-05-02 18:58:54 -04:00
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const MenuItem * current_active = _menu.get_active();
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const MenuList& items = _menu.items ();
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int c = 0;
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if (!current_active) {
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return true;
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}
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/* work around another gtkmm API clusterfuck
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* const MenuItem* get_active () const
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* void set_active (guint index)
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*
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* also MenuList.activate_item does not actually
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* set it as active in the menu.
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*
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*/
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switch (ev->direction) {
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case GDK_SCROLL_UP:
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for (MenuList::const_reverse_iterator i = items.rbegin(); i != items.rend(); ++i, ++c) {
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if ( &(*i) != current_active) {
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continue;
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}
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if (++i != items.rend()) {
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c = items.size() - 2 - c;
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assert(c >= 0);
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_menu.set_active(c);
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_menu.activate_item(*i);
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}
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break;
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}
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break;
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case GDK_SCROLL_DOWN:
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for (MenuList::const_iterator i = items.begin(); i != items.end(); ++i, ++c) {
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if ( &(*i) != current_active) {
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continue;
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}
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if (++i != items.end()) {
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2015-05-03 17:36:20 -04:00
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assert(c + 1 < (int) items.size());
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2015-05-02 18:58:54 -04:00
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_menu.set_active(c + 1);
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_menu.activate_item(*i);
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}
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break;
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}
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break;
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default:
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break;
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}
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2014-03-23 19:15:34 -04:00
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return true;
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}
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2014-12-12 23:38:41 -05:00
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void
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ArdourDropdown::clear_items ()
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{
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_menu.items ().clear ();
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}
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2014-03-23 19:15:34 -04:00
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void
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2015-01-16 20:01:34 -05:00
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ArdourDropdown::AddMenuElem (Menu_Helpers::Element e)
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2014-03-23 19:15:34 -04:00
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{
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using namespace Menu_Helpers;
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MenuList& items = _menu.items ();
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2015-10-05 10:17:49 -04:00
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2014-03-23 19:15:34 -04:00
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items.push_back (e);
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}
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2015-10-10 19:32:13 -04:00
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void
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ArdourDropdown::disable_scrolling()
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{
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_scrolling_disabled = true;
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}
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