src/gigedit/regionchooser.cpp

/*
 * Copyright (C) 2006, 2007 Andreas Persson
 *
 * 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 2, 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 program; see the file COPYING. If not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA.
 */

#include "regionchooser.h"
#include <gdkmm/cursor.h>
#include <gtkmm/stock.h>
#include <gtkmm/spinbutton.h>
#include <gtkmm/dialog.h>
#include <libintl.h>
#include <math.h>

#define _(String) gettext(String)

RegionChooser::RegionChooser()
{
    Glib::RefPtr<Gdk::Colormap> colormap = get_default_colormap();

    black = Gdk::Color("black");
    white = Gdk::Color("white");
    red = Gdk::Color("#8070ff");
    blue = Gdk::Color("#c098ff");
    green = Gdk::Color("#a088ff");
    grey1 = Gdk::Color("red");

    colormap->alloc_color(black);
    colormap->alloc_color(white);
    colormap->alloc_color(red);
    colormap->alloc_color(blue);
    colormap->alloc_color(green);
    colormap->alloc_color(grey1);
    instrument = 0;
    region = 0;
    resize.active = false;
    cursor_is_resize = false;
    h1 = 20;
    width = 800;

    actionGroup = Gtk::ActionGroup::create();
    actionGroup->add(Gtk::Action::create("Properties",
                                         Gtk::Stock::PROPERTIES),
                     sigc::mem_fun(*this,
                                   &RegionChooser::show_region_properties));
    actionGroup->add(Gtk::Action::create("Remove", Gtk::Stock::REMOVE),
                     sigc::mem_fun(*this, &RegionChooser::delete_region));
    actionGroup->add(Gtk::Action::create("Add", Gtk::Stock::ADD),
                     sigc::mem_fun(*this, &RegionChooser::add_region));
    actionGroup->add(Gtk::Action::create("Dimensions", _("Dimensions...")),
                     sigc::mem_fun(*this, &RegionChooser::manage_dimensions));

    uiManager = Gtk::UIManager::create();
    uiManager->insert_action_group(actionGroup);
    Glib::ustring ui_info =
        "<ui>"
        "  <popup name='PopupMenuInsideRegion'>"
        "    <menuitem action='Properties'/>"
        "    <menuitem action='Dimensions'/>"
        "    <menuitem action='Remove'/>"
        "  </popup>"
        "  <popup name='PopupMenuOutsideRegion'>"
        "    <menuitem action='Add'/>"
        "  </popup>"
        "</ui>";
    uiManager->add_ui_from_string(ui_info);

    popup_menu_inside_region = dynamic_cast<Gtk::Menu*>(
        uiManager->get_widget("/PopupMenuInsideRegion"));
    popup_menu_outside_region = dynamic_cast<Gtk::Menu*>(
        uiManager->get_widget("/PopupMenuOutsideRegion"));

    add_events(Gdk::BUTTON_PRESS_MASK | Gdk::BUTTON_RELEASE_MASK |
               Gdk::POINTER_MOTION_MASK | Gdk::POINTER_MOTION_HINT_MASK);

    dimensionManager.articulation_changed_signal.connect(
        sigc::mem_fun(*this, &RegionChooser::on_dimension_manager_changed)
    );
}

RegionChooser::~RegionChooser()
{
}

void RegionChooser::on_realize()
{
    // We need to call the base on_realize()
    Gtk::DrawingArea::on_realize();

    // Now we can allocate any additional resources we need
    Glib::RefPtr<Gdk::Window> window = get_window();
    gc = Gdk::GC::create(window);
    window->clear();
}

bool RegionChooser::on_expose_event(GdkEventExpose* event)
{
    Glib::RefPtr<Gdk::Window> window = get_window();
    window->clear();
    const int h = 40;
    const int w = width - 1;
    const int bh = int(h * 0.55);

    Glib::RefPtr<const Gdk::GC> black = get_style()->get_black_gc();
    Glib::RefPtr<const Gdk::GC> white = get_style()->get_white_gc();

    window->draw_rectangle(black, false, 0, h1, w, h - 1);
    window->draw_rectangle(white, true, 1, h1 + 1, w - 1, h - 2);
    for (int i = 0 ; i < 128 ; i++) {
        int note = (i + 3) % 12;
        int x = int(w * i / 128.0 + 0.5);

        if (note == 1 || note == 4 || note == 6 || note == 9 || note == 11) {
            int x2 = int(w * (i + 0.5) / 128.0 + 0.5);
            window->draw_line(black, x2, h1 + bh, x2, h1 + h);

            int x3 = int(w * (i + 1) / 128.0 + 0.5);
            window->draw_rectangle(black, true, x, h1 + 1, x3 - x + 1, bh);
        } else if (note == 3 || note == 8) {
            window->draw_line(black, x, h1 + 1, x, h1 + h);
        }
    }

    if (instrument) {
        int i = 0;
        gig::Region *nextRegion;
        int x3 = -1;
        for (gig::Region *r = instrument->GetFirstRegion() ;
             r ;
             r = nextRegion) {

            if (x3 < 0) x3 = int(w * (r->KeyRange.low) / 128.0 + 0.5);
            nextRegion = instrument->GetNextRegion();
            if (!nextRegion || r->KeyRange.high + 1 != nextRegion->KeyRange.low) {
                int x2 = int(w * (r->KeyRange.high + 1) / 128.0 + 0.5);
                window->draw_line(black, x3, 0, x2, 0);
                window->draw_line(black, x3, h1 - 1, x2, h1 - 1);
                window->draw_line(black, x2, 1, x2, h1 - 2);
                window->draw_rectangle(white, true, x3 + 1, 1, x2 - x3 - 1, h1 - 2);
                x3 = -1;
            }
            i++;
        }

        for (gig::Region *r = instrument->GetFirstRegion() ;
             r ;
             r = instrument->GetNextRegion()) {
            int x = int(w * (r->KeyRange.low) / 128.0 + 0.5);
            window->draw_line(black, x, 1, x, h1 - 2);
        }

        if (region) {
            int x1 = int(w * (region->KeyRange.low) / 128.0 + 0.5);
            int x2 = int(w * (region->KeyRange.high + 1) / 128.0 + 0.5);
            gc->set_foreground(red);
            window->draw_rectangle(gc, true, x1 + 1, 1, x2 - x1 - 1, h1 - 2);
        }
    }
    return true;
}


void RegionChooser::on_size_request(GtkRequisition* requisition)
{
    *requisition = GtkRequisition();
    requisition->height = 40 + 20;
    requisition->width = 500;
}


// not used
void RegionChooser::draw_region(int from, int to, const Gdk::Color& color)
{
    const int h = 40;
    const int w = width;
    const int bh = int(h * 0.55);

    Glib::RefPtr<Gdk::Window> window = get_window();
    gc->set_foreground(color);

    for (int i = from ; i < to ; i++) {
        int note = (i + 3) % 12;
        int x = int(w * i / 128.0 + 0.5) + 1;
        int x2 = int(w * (i + 1.5) / 128.0 + 0.5);
        int x3 = int(w * (i + 1) / 128.0 + 0.5);
        int x4 = int(w * (i - 0.5) / 128 + 0.5) + 1;
        int w1 = x3 - x;
        switch (note) {
        case 0: case 5: case 10:
            window->draw_rectangle(gc, true, x, h1 + 1, w1, bh);
            window->draw_rectangle(gc, true, x4, h1 + bh + 1, x2 - x4, h - bh - 2);
            break;
        case 2: case 7:
            window->draw_rectangle(gc, true, x, h1 + 1, w1, bh);
            window->draw_rectangle(gc, true, x4, h1 + bh + 1, x3 - x4, h - bh - 2);
            break;
        case 3: case 8:
            window->draw_rectangle(gc, true, x, h1 + 1, w1, bh);
            window->draw_rectangle(gc, true, x, h1 + bh + 1, x2 - x, h - bh - 2);
            break;
        default:
            window->draw_rectangle(gc, true, x, h1 + 1, w1, bh - 1);
            break;
        }
    }
}

void RegionChooser::set_instrument(gig::Instrument* instrument)
{
    this->instrument = instrument;
    region = instrument ? instrument->GetFirstRegion() : 0;
    queue_draw();
    region_selected();
}

bool RegionChooser::on_button_release_event(GdkEventButton* event)
{
    if (resize.active) {
        get_window()->pointer_ungrab(event->time);
        resize.active = false;

        if (resize.mode == resize.moving_high_limit) {
            if (resize.region->KeyRange.high != resize.pos - 1) {
                resize.region->KeyRange.high = resize.pos - 1;
                instrument_changed();
            }
        } else if (resize.mode == resize.moving_low_limit) {
            if (resize.region->KeyRange.low != resize.pos) {
                resize.region->KeyRange.low = resize.pos;
                instrument_changed();
            }
        }

        if (!is_in_resize_zone(event->x, event->y) && cursor_is_resize) {
            get_window()->set_cursor();
            cursor_is_resize = false;
        }
    }
    return true;
}

bool RegionChooser::on_button_press_event(GdkEventButton* event)
{
    if (!instrument) return true;

    int k = int(event->x / (width - 1) * 128.0);

    if (event->type == GDK_BUTTON_PRESS && event->button == 3) {
        gig::Region* r = get_region(k);
        if (r) {
            region = r;
            queue_draw();
            region_selected();
            popup_menu_inside_region->popup(event->button, event->time);
        } else {
            new_region_pos = k;
            popup_menu_outside_region->popup(event->button, event->time);
        }
    } else {
        if (is_in_resize_zone(event->x, event->y)) {
            Gdk::Cursor double_arrow(Gdk::SB_H_DOUBLE_ARROW);
            get_window()->pointer_grab(false,
                                       Gdk::BUTTON_RELEASE_MASK |
                                       Gdk::POINTER_MOTION_MASK |
                                       Gdk::POINTER_MOTION_HINT_MASK,
                                       double_arrow, event->time);
            resize.active = true;
        } else {
            gig::Region* r = get_region(k);
            if (r) {
                region = r;
                queue_draw();
                region_selected();
            }
        }
    }
    return true;
}

gig::Region* RegionChooser::get_region(int key)
{
    for (gig::Region *r = instrument->GetFirstRegion() ; r ;
         r = instrument->GetNextRegion()) {
        if (key < r->KeyRange.low) return 0;
        if (key <= r->KeyRange.high) return r;
    }
    return 0;
}

bool RegionChooser::on_motion_notify_event(GdkEventMotion* event)
{
    const int w = width - 1;
    Glib::RefPtr<Gdk::Window> window = get_window();
    int x, y;
    Gdk::ModifierType state = Gdk::ModifierType(0);
    window->get_pointer(x, y, state);
    if (resize.active) {
        int k = int(double(x) / w * 128.0 + 0.5);

        if (k < resize.min) k = resize.min;
        else if (k > resize.max) k = resize.max;

        if (k != resize.pos) {
            if (resize.mode == resize.undecided) {
                if (k < resize.pos) {
                    // edit high limit of prev_region
                    resize.max = resize.region->KeyRange.low;
                    resize.region = resize.prev_region;
                    resize.mode = resize.moving_high_limit;
                } else {
                    // edit low limit of region
                    resize.min = resize.prev_region->KeyRange.high + 1;
                    resize.mode = resize.moving_low_limit;
                }
            }
            Glib::RefPtr<const Gdk::GC> black = get_style()->get_black_gc();
            Glib::RefPtr<const Gdk::GC> white = get_style()->get_white_gc();
            if (region == resize.region) {
                gc->set_foreground(red);
                white = gc;
            }
            Glib::RefPtr<const Gdk::GC> bg = get_style()->get_bg_gc(Gtk::STATE_NORMAL);
            int prevx = int(w * resize.pos / 128.0 + 0.5);
            x = int(w * k / 128.0 + 0.5);

            if (resize.mode == resize.moving_high_limit) {
                if (k > resize.pos) {
                    window->draw_rectangle(white, true, prevx, 1, x - prevx, h1 - 2);
                    window->draw_line(black, prevx, 0, x, 0);
                    window->draw_line(black, prevx, h1 - 1, x, h1 - 1);
                } else {
                    int xx = ((resize.pos == resize.max && resize.max != 128) ? 1 : 0);
                    window->draw_rectangle(bg, true, x + 1, 0, prevx - x - xx, h1);
                }
            } else {
                if (k < resize.pos) {
                    window->draw_rectangle(white, true, x + 1, 1, prevx - x, h1 - 2);
                    window->draw_line(black, x, 0, prevx, 0);
                    window->draw_line(black, x, h1 - 1, prevx, h1 - 1);
                } else {
                    int xx = ((resize.pos == resize.min && resize.min != 0) ? 1 : 0);
                    window->draw_rectangle(bg, true, prevx + xx, 0, x - prevx - xx, h1);
                }
            }
            window->draw_line(black, x, 1, x, h1 - 2);
            resize.pos = k;
        }
    } else {
        if (is_in_resize_zone(x, y)) {
            if (!cursor_is_resize) {
                Gdk::Cursor double_arrow(Gdk::SB_H_DOUBLE_ARROW);
                window->set_cursor(double_arrow);
                cursor_is_resize = true;
            }
        } else if (cursor_is_resize) {
            window->set_cursor();
            cursor_is_resize = false;
        }
    }

    return true;
}

bool RegionChooser::is_in_resize_zone(double x, double y) {
    const int w = width - 1;

    if (instrument && y >= 0 && y <= h1) {
        gig::Region* prev_region = 0;
        gig::Region* next_region;
        for (gig::Region* r = instrument->GetFirstRegion() ; r ; r = next_region) {
            next_region = instrument->GetNextRegion();

            int lo = int(w * (r->KeyRange.low) / 128.0 + 0.5);
            if (x <= lo - 2) break;
            if (x < lo + 2) {
                resize.region = r;
                resize.pos = r->KeyRange.low;
                resize.max = r->KeyRange.high;

                if (prev_region && prev_region->KeyRange.high + 1 == r->KeyRange.low) {
                    // we don't know yet if it's the high limit of
                    // prev_region or the low limit of r that's going
                    // to be edited
                    resize.mode = resize.undecided;
                    resize.min = prev_region->KeyRange.low + 1;
                    resize.prev_region = prev_region;
                    return true;
                }

                // edit low limit
                resize.mode = resize.moving_low_limit;
                resize.min = prev_region ? prev_region->KeyRange.high + 1 : 0;
                return true;
            }
            if (!next_region || r->KeyRange.high + 1 != next_region->KeyRange.low) {
                int hi = int(w * (r->KeyRange.high + 1) / 128.0 + 0.5);
                if (x <= hi - 2) break;
                if (x < hi + 2) {
                    // edit high limit
                    resize.region = r;
                    resize.pos = r->KeyRange.high + 1;
                    resize.mode = resize.moving_high_limit;
                    resize.min = r->KeyRange.low + 1;
                    resize.max = next_region ? next_region->KeyRange.low : 128;
                    return true;
                }
            }
            prev_region = r;
        }
    }
    return false;
}

sigc::signal<void> RegionChooser::signal_region_selected()
{
    return region_selected;
}

sigc::signal<void> RegionChooser::signal_instrument_changed()
{
    return instrument_changed;
}

void RegionChooser::show_region_properties()
{
    if (!region) return;
    Gtk::Dialog dialog("Region Properties", true /*modal*/);
    // add "Keygroup" checkbox
    Gtk::CheckButton checkBoxKeygroup("Member of a Keygroup (Exclusive Group)");
    checkBoxKeygroup.set_active(region->KeyGroup);
    dialog.get_vbox()->pack_start(checkBoxKeygroup);
    checkBoxKeygroup.show();
    // add "Keygroup" spinbox
    Gtk::Adjustment adjustment(1, 1, pow(2,32));
    Gtk::SpinButton spinBox(adjustment);
    if (region->KeyGroup) spinBox.set_value(region->KeyGroup);
    dialog.get_vbox()->pack_start(spinBox);
    spinBox.show();
    // add OK and CANCEL buttons to the dialog
    dialog.add_button(Gtk::Stock::OK, 0);
    dialog.add_button(Gtk::Stock::CANCEL, 1);
    dialog.show_all_children();
    if (!dialog.run()) { // OK selected ...
        region->KeyGroup =
            (checkBoxKeygroup.get_active()) ? spinBox.get_value_as_int() : 0;
    }
}

void RegionChooser::add_region()
{
    gig::Region* r;
    for (r = instrument->GetFirstRegion() ; r ; r = instrument->GetNextRegion()) {
        if (r->KeyRange.low > new_region_pos) break;
    }

    region = instrument->AddRegion();
    region->KeyRange.low = region->KeyRange.high = new_region_pos;

    instrument->MoveRegion(region, r);
    queue_draw();
    region_selected();
    instrument_changed();
}

void RegionChooser::delete_region()
{
    instrument->DeleteRegion(region);
    region = 0;
    queue_draw();
    region_selected();
    instrument_changed();
}

void RegionChooser::manage_dimensions()
{
    gig::Region* region = get_region();
    if (!region) return;
    dimensionManager.show(region);
}

void RegionChooser::on_dimension_manager_changed() {
    region_selected();
    instrument_changed();
}
1	schoenebeck	1225	/*
2			* Copyright (C) 2006, 2007 Andreas Persson
3			*
4			* This program is free software; you can redistribute it and/or
5			* modify it under the terms of the GNU General Public License as
6			* published by the Free Software Foundation; either version 2, or (at
7			* your option) any later version.
8			*
9			* This program is distributed in the hope that it will be useful, but
10			* WITHOUT ANY WARRANTY; without even the implied warranty of
11			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12			* General Public License for more details.
13			*
14			* You should have received a copy of the GNU General Public License
15			* along with program; see the file COPYING. If not, write to the Free
16			* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
17			* 02110-1301 USA.
18			*/
19
20			#include "regionchooser.h"
21			#include <gdkmm/cursor.h>
22			#include <gtkmm/stock.h>
23			#include <gtkmm/spinbutton.h>
24			#include <gtkmm/dialog.h>
25			#include <libintl.h>
26			#include <math.h>
27
28			#define _(String) gettext(String)
29
30			RegionChooser::RegionChooser()
31			{
32			Glib::RefPtr<Gdk::Colormap> colormap = get_default_colormap();
33
34			black = Gdk::Color("black");
35			white = Gdk::Color("white");
36			red = Gdk::Color("#8070ff");
37			blue = Gdk::Color("#c098ff");
38			green = Gdk::Color("#a088ff");
39			grey1 = Gdk::Color("red");
40
41			colormap->alloc_color(black);
42			colormap->alloc_color(white);
43			colormap->alloc_color(red);
44			colormap->alloc_color(blue);
45			colormap->alloc_color(green);
46			colormap->alloc_color(grey1);
47			instrument = 0;
48			region = 0;
49			resize.active = false;
50			cursor_is_resize = false;
51			h1 = 20;
52			width = 800;
53
54			actionGroup = Gtk::ActionGroup::create();
55			actionGroup->add(Gtk::Action::create("Properties",
56			Gtk::Stock::PROPERTIES),
57			sigc::mem_fun(*this,
58			&RegionChooser::show_region_properties));
59			actionGroup->add(Gtk::Action::create("Remove", Gtk::Stock::REMOVE),
60			sigc::mem_fun(*this, &RegionChooser::delete_region));
61			actionGroup->add(Gtk::Action::create("Add", Gtk::Stock::ADD),
62			sigc::mem_fun(*this, &RegionChooser::add_region));
63			actionGroup->add(Gtk::Action::create("Dimensions", _("Dimensions...")),
64			sigc::mem_fun(*this, &RegionChooser::manage_dimensions));
65
66			uiManager = Gtk::UIManager::create();
67			uiManager->insert_action_group(actionGroup);
68			Glib::ustring ui_info =
69			"<ui>"
70			" <popup name='PopupMenuInsideRegion'>"
71			" <menuitem action='Properties'/>"
72			" <menuitem action='Dimensions'/>"
73			" <menuitem action='Remove'/>"
74			" </popup>"
75			" <popup name='PopupMenuOutsideRegion'>"
76			" <menuitem action='Add'/>"
77			" </popup>"
78			"</ui>";
79			uiManager->add_ui_from_string(ui_info);
80
81			popup_menu_inside_region = dynamic_cast<Gtk::Menu*>(
82			uiManager->get_widget("/PopupMenuInsideRegion"));
83			popup_menu_outside_region = dynamic_cast<Gtk::Menu*>(
84			uiManager->get_widget("/PopupMenuOutsideRegion"));
85
86			add_events(Gdk::BUTTON_PRESS_MASK \| Gdk::BUTTON_RELEASE_MASK \|
87			Gdk::POINTER_MOTION_MASK \| Gdk::POINTER_MOTION_HINT_MASK);
88
89			dimensionManager.articulation_changed_signal.connect(
90			sigc::mem_fun(*this, &RegionChooser::on_dimension_manager_changed)
91			);
92			}
93
94			RegionChooser::~RegionChooser()
95			{
96			}
97
98			void RegionChooser::on_realize()
99			{
100			// We need to call the base on_realize()
101			Gtk::DrawingArea::on_realize();
102
103			// Now we can allocate any additional resources we need
104			Glib::RefPtr<Gdk::Window> window = get_window();
105			gc = Gdk::GC::create(window);
106			window->clear();
107			}
108
109			bool RegionChooser::on_expose_event(GdkEventExpose* event)
110			{
111			Glib::RefPtr<Gdk::Window> window = get_window();
112			window->clear();
113			const int h = 40;
114			const int w = width - 1;
115			const int bh = int(h * 0.55);
116
117			Glib::RefPtr<const Gdk::GC> black = get_style()->get_black_gc();
118			Glib::RefPtr<const Gdk::GC> white = get_style()->get_white_gc();
119
120			window->draw_rectangle(black, false, 0, h1, w, h - 1);
121			window->draw_rectangle(white, true, 1, h1 + 1, w - 1, h - 2);
122			for (int i = 0 ; i < 128 ; i++) {
123			int note = (i + 3) % 12;
124			int x = int(w * i / 128.0 + 0.5);
125
126			if (note == 1 \|\| note == 4 \|\| note == 6 \|\| note == 9 \|\| note == 11) {
127			int x2 = int(w * (i + 0.5) / 128.0 + 0.5);
128			window->draw_line(black, x2, h1 + bh, x2, h1 + h);
129
130			int x3 = int(w * (i + 1) / 128.0 + 0.5);
131			window->draw_rectangle(black, true, x, h1 + 1, x3 - x + 1, bh);
132			} else if (note == 3 \|\| note == 8) {
133			window->draw_line(black, x, h1 + 1, x, h1 + h);
134			}
135			}
136
137			if (instrument) {
138			int i = 0;
139			gig::Region *nextRegion;
140			int x3 = -1;
141			for (gig::Region *r = instrument->GetFirstRegion() ;
142			r ;
143			r = nextRegion) {
144
145			if (x3 < 0) x3 = int(w * (r->KeyRange.low) / 128.0 + 0.5);
146			nextRegion = instrument->GetNextRegion();
147			if (!nextRegion \|\| r->KeyRange.high + 1 != nextRegion->KeyRange.low) {
148			int x2 = int(w * (r->KeyRange.high + 1) / 128.0 + 0.5);
149			window->draw_line(black, x3, 0, x2, 0);
150			window->draw_line(black, x3, h1 - 1, x2, h1 - 1);
151			window->draw_line(black, x2, 1, x2, h1 - 2);
152			window->draw_rectangle(white, true, x3 + 1, 1, x2 - x3 - 1, h1 - 2);
153			x3 = -1;
154			}
155			i++;
156			}
157
158			for (gig::Region *r = instrument->GetFirstRegion() ;
159			r ;
160			r = instrument->GetNextRegion()) {
161			int x = int(w * (r->KeyRange.low) / 128.0 + 0.5);
162			window->draw_line(black, x, 1, x, h1 - 2);
163			}
164
165			if (region) {
166			int x1 = int(w * (region->KeyRange.low) / 128.0 + 0.5);
167			int x2 = int(w * (region->KeyRange.high + 1) / 128.0 + 0.5);
168			gc->set_foreground(red);
169			window->draw_rectangle(gc, true, x1 + 1, 1, x2 - x1 - 1, h1 - 2);
170			}
171			}
172			return true;
173			}
174
175
176			void RegionChooser::on_size_request(GtkRequisition* requisition)
177			{
178			*requisition = GtkRequisition();
179			requisition->height = 40 + 20;
180			requisition->width = 500;
181			}
182
183
184			// not used
185			void RegionChooser::draw_region(int from, int to, const Gdk::Color& color)
186			{
187			const int h = 40;
188			const int w = width;
189			const int bh = int(h * 0.55);
190
191			Glib::RefPtr<Gdk::Window> window = get_window();
192			gc->set_foreground(color);
193
194			for (int i = from ; i < to ; i++) {
195			int note = (i + 3) % 12;
196			int x = int(w * i / 128.0 + 0.5) + 1;
197			int x2 = int(w * (i + 1.5) / 128.0 + 0.5);
198			int x3 = int(w * (i + 1) / 128.0 + 0.5);
199			int x4 = int(w * (i - 0.5) / 128 + 0.5) + 1;
200			int w1 = x3 - x;
201			switch (note) {
202			case 0: case 5: case 10:
203			window->draw_rectangle(gc, true, x, h1 + 1, w1, bh);
204			window->draw_rectangle(gc, true, x4, h1 + bh + 1, x2 - x4, h - bh - 2);
205			break;
206			case 2: case 7:
207			window->draw_rectangle(gc, true, x, h1 + 1, w1, bh);
208			window->draw_rectangle(gc, true, x4, h1 + bh + 1, x3 - x4, h - bh - 2);
209			break;
210			case 3: case 8:
211			window->draw_rectangle(gc, true, x, h1 + 1, w1, bh);
212			window->draw_rectangle(gc, true, x, h1 + bh + 1, x2 - x, h - bh - 2);
213			break;
214			default:
215			window->draw_rectangle(gc, true, x, h1 + 1, w1, bh - 1);
216			break;
217			}
218			}
219			}
220
221			void RegionChooser::set_instrument(gig::Instrument* instrument)
222			{
223			this->instrument = instrument;
224			region = instrument ? instrument->GetFirstRegion() : 0;
225			queue_draw();
226	persson	1261	region_selected();
227	schoenebeck	1225	}
228
229			bool RegionChooser::on_button_release_event(GdkEventButton* event)
230			{
231			if (resize.active) {
232			get_window()->pointer_ungrab(event->time);
233			resize.active = false;
234
235			if (resize.mode == resize.moving_high_limit) {
236	persson	1261	if (resize.region->KeyRange.high != resize.pos - 1) {
237			resize.region->KeyRange.high = resize.pos - 1;
238			instrument_changed();
239			}
240	schoenebeck	1225	} else if (resize.mode == resize.moving_low_limit) {
241	persson	1261	if (resize.region->KeyRange.low != resize.pos) {
242			resize.region->KeyRange.low = resize.pos;
243			instrument_changed();
244			}
245	schoenebeck	1225	}
246
247			if (!is_in_resize_zone(event->x, event->y) && cursor_is_resize) {
248			get_window()->set_cursor();
249			cursor_is_resize = false;
250			}
251			}
252			return true;
253			}
254
255			bool RegionChooser::on_button_press_event(GdkEventButton* event)
256			{
257			if (!instrument) return true;
258
259			int k = int(event->x / (width - 1) * 128.0);
260
261			if (event->type == GDK_BUTTON_PRESS && event->button == 3) {
262			gig::Region* r = get_region(k);
263			if (r) {
264			region = r;
265			queue_draw();
266	persson	1261	region_selected();
267	schoenebeck	1225	popup_menu_inside_region->popup(event->button, event->time);
268			} else {
269			new_region_pos = k;
270			popup_menu_outside_region->popup(event->button, event->time);
271			}
272			} else {
273			if (is_in_resize_zone(event->x, event->y)) {
274			Gdk::Cursor double_arrow(Gdk::SB_H_DOUBLE_ARROW);
275			get_window()->pointer_grab(false,
276			Gdk::BUTTON_RELEASE_MASK \|
277			Gdk::POINTER_MOTION_MASK \|
278			Gdk::POINTER_MOTION_HINT_MASK,
279			double_arrow, event->time);
280			resize.active = true;
281			} else {
282			gig::Region* r = get_region(k);
283			if (r) {
284			region = r;
285			queue_draw();
286	persson	1261	region_selected();
287	schoenebeck	1225	}
288			}
289			}
290			return true;
291			}
292
293			gig::Region* RegionChooser::get_region(int key)
294			{
295			for (gig::Region *r = instrument->GetFirstRegion() ; r ;
296			r = instrument->GetNextRegion()) {
297			if (key < r->KeyRange.low) return 0;
298			if (key <= r->KeyRange.high) return r;
299			}
300			return 0;
301			}
302
303			bool RegionChooser::on_motion_notify_event(GdkEventMotion* event)
304			{
305			const int w = width - 1;
306			Glib::RefPtr<Gdk::Window> window = get_window();
307			int x, y;
308			Gdk::ModifierType state = Gdk::ModifierType(0);
309			window->get_pointer(x, y, state);
310			if (resize.active) {
311			int k = int(double(x) / w * 128.0 + 0.5);
312
313			if (k < resize.min) k = resize.min;
314			else if (k > resize.max) k = resize.max;
315
316			if (k != resize.pos) {
317			if (resize.mode == resize.undecided) {
318			if (k < resize.pos) {
319			// edit high limit of prev_region
320			resize.max = resize.region->KeyRange.low;
321			resize.region = resize.prev_region;
322			resize.mode = resize.moving_high_limit;
323			} else {
324			// edit low limit of region
325			resize.min = resize.prev_region->KeyRange.high + 1;
326			resize.mode = resize.moving_low_limit;
327			}
328			}
329			Glib::RefPtr<const Gdk::GC> black = get_style()->get_black_gc();
330			Glib::RefPtr<const Gdk::GC> white = get_style()->get_white_gc();
331			if (region == resize.region) {
332			gc->set_foreground(red);
333			white = gc;
334			}
335			Glib::RefPtr<const Gdk::GC> bg = get_style()->get_bg_gc(Gtk::STATE_NORMAL);
336			int prevx = int(w * resize.pos / 128.0 + 0.5);
337			x = int(w * k / 128.0 + 0.5);
338
339			if (resize.mode == resize.moving_high_limit) {
340			if (k > resize.pos) {
341			window->draw_rectangle(white, true, prevx, 1, x - prevx, h1 - 2);
342			window->draw_line(black, prevx, 0, x, 0);
343			window->draw_line(black, prevx, h1 - 1, x, h1 - 1);
344			} else {
345			int xx = ((resize.pos == resize.max && resize.max != 128) ? 1 : 0);
346			window->draw_rectangle(bg, true, x + 1, 0, prevx - x - xx, h1);
347			}
348			} else {
349			if (k < resize.pos) {
350			window->draw_rectangle(white, true, x + 1, 1, prevx - x, h1 - 2);
351			window->draw_line(black, x, 0, prevx, 0);
352			window->draw_line(black, x, h1 - 1, prevx, h1 - 1);
353			} else {
354			int xx = ((resize.pos == resize.min && resize.min != 0) ? 1 : 0);
355			window->draw_rectangle(bg, true, prevx + xx, 0, x - prevx - xx, h1);
356			}
357			}
358			window->draw_line(black, x, 1, x, h1 - 2);
359			resize.pos = k;
360			}
361			} else {
362			if (is_in_resize_zone(x, y)) {
363			if (!cursor_is_resize) {
364			Gdk::Cursor double_arrow(Gdk::SB_H_DOUBLE_ARROW);
365			window->set_cursor(double_arrow);
366			cursor_is_resize = true;
367			}
368			} else if (cursor_is_resize) {
369			window->set_cursor();
370			cursor_is_resize = false;
371			}
372			}
373
374			return true;
375			}
376
377			bool RegionChooser::is_in_resize_zone(double x, double y) {
378			const int w = width - 1;
379
380			if (instrument && y >= 0 && y <= h1) {
381			gig::Region* prev_region = 0;
382			gig::Region* next_region;
383			for (gig::Region* r = instrument->GetFirstRegion() ; r ; r = next_region) {
384			next_region = instrument->GetNextRegion();
385
386			int lo = int(w * (r->KeyRange.low) / 128.0 + 0.5);
387			if (x <= lo - 2) break;
388			if (x < lo + 2) {
389			resize.region = r;
390			resize.pos = r->KeyRange.low;
391			resize.max = r->KeyRange.high;
392
393			if (prev_region && prev_region->KeyRange.high + 1 == r->KeyRange.low) {
394			// we don't know yet if it's the high limit of
395			// prev_region or the low limit of r that's going
396			// to be edited
397			resize.mode = resize.undecided;
398			resize.min = prev_region->KeyRange.low + 1;
399			resize.prev_region = prev_region;
400			return true;
401			}
402
403			// edit low limit
404			resize.mode = resize.moving_low_limit;
405			resize.min = prev_region ? prev_region->KeyRange.high + 1 : 0;
406			return true;
407			}
408			if (!next_region \|\| r->KeyRange.high + 1 != next_region->KeyRange.low) {
409			int hi = int(w * (r->KeyRange.high + 1) / 128.0 + 0.5);
410			if (x <= hi - 2) break;
411			if (x < hi + 2) {
412			// edit high limit
413			resize.region = r;
414			resize.pos = r->KeyRange.high + 1;
415			resize.mode = resize.moving_high_limit;
416			resize.min = r->KeyRange.low + 1;
417			resize.max = next_region ? next_region->KeyRange.low : 128;
418			return true;
419			}
420			}
421			prev_region = r;
422			}
423			}
424			return false;
425			}
426
427	persson	1261	sigc::signal<void> RegionChooser::signal_region_selected()
428	schoenebeck	1225	{
429	persson	1261	return region_selected;
430	schoenebeck	1225	}
431
432	persson	1261	sigc::signal<void> RegionChooser::signal_instrument_changed()
433			{
434			return instrument_changed;
435			}
436
437	schoenebeck	1225	void RegionChooser::show_region_properties()
438			{
439			if (!region) return;
440			Gtk::Dialog dialog("Region Properties", true /modal/);
441			// add "Keygroup" checkbox
442			Gtk::CheckButton checkBoxKeygroup("Member of a Keygroup (Exclusive Group)");
443			checkBoxKeygroup.set_active(region->KeyGroup);
444			dialog.get_vbox()->pack_start(checkBoxKeygroup);
445			checkBoxKeygroup.show();
446			// add "Keygroup" spinbox
447			Gtk::Adjustment adjustment(1, 1, pow(2,32));
448			Gtk::SpinButton spinBox(adjustment);
449			if (region->KeyGroup) spinBox.set_value(region->KeyGroup);
450			dialog.get_vbox()->pack_start(spinBox);
451			spinBox.show();
452			// add OK and CANCEL buttons to the dialog
453			dialog.add_button(Gtk::Stock::OK, 0);
454			dialog.add_button(Gtk::Stock::CANCEL, 1);
455			dialog.show_all_children();
456			if (!dialog.run()) { // OK selected ...
457			region->KeyGroup =
458			(checkBoxKeygroup.get_active()) ? spinBox.get_value_as_int() : 0;
459			}
460			}
461
462			void RegionChooser::add_region()
463			{
464			gig::Region* r;
465			for (r = instrument->GetFirstRegion() ; r ; r = instrument->GetNextRegion()) {
466			if (r->KeyRange.low > new_region_pos) break;
467			}
468
469			region = instrument->AddRegion();
470			region->KeyRange.low = region->KeyRange.high = new_region_pos;
471
472			instrument->MoveRegion(region, r);
473			queue_draw();
474	persson	1261	region_selected();
475			instrument_changed();
476	schoenebeck	1225	}
477
478			void RegionChooser::delete_region()
479			{
480			instrument->DeleteRegion(region);
481			region = 0;
482			queue_draw();
483	persson	1261	region_selected();
484			instrument_changed();
485	schoenebeck	1225	}
486
487			void RegionChooser::manage_dimensions()
488			{
489			gig::Region* region = get_region();
490			if (!region) return;
491			dimensionManager.show(region);
492			}
493
494			void RegionChooser::on_dimension_manager_changed() {
495	persson	1261	region_selected();
496			instrument_changed();
497	schoenebeck	1225	}