trunk/src/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>

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));

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

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->GetFirstRegion();
    queue_draw();
    sel_changed_signal.emit();
}

void RegionChooser::set_region(gig::Region* region)
{
    this->region = region;
    queue_draw();
}

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

        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();
            sel_changed_signal.emit();
            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();
                sel_changed_signal.emit();
            }
        }
    }
    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_sel_changed()
{
    return sel_changed_signal;
}

void RegionChooser::show_region_properties()
{
}

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();
    sel_changed_signal.emit();
}

void RegionChooser::delete_region()
{
    instrument->DeleteRegion(region);
    region = 0;
    queue_draw();
    sel_changed_signal.emit();
}
1	persson	1052	/*
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	persson	1103	#include <gtkmm/stock.h>
23	persson	1052
24			RegionChooser::RegionChooser()
25			{
26			Glib::RefPtr<Gdk::Colormap> colormap = get_default_colormap();
27
28			black = Gdk::Color("black");
29			white = Gdk::Color("white");
30			red = Gdk::Color("#8070ff");
31			blue = Gdk::Color("#c098ff");
32			green = Gdk::Color("#a088ff");
33			grey1 = Gdk::Color("red");
34
35			colormap->alloc_color(black);
36			colormap->alloc_color(white);
37			colormap->alloc_color(red);
38			colormap->alloc_color(blue);
39			colormap->alloc_color(green);
40			colormap->alloc_color(grey1);
41			instrument = 0;
42			region = 0;
43	persson	1090	resize.active = false;
44			cursor_is_resize = false;
45			h1 = 20;
46			width = 800;
47	persson	1052
48	persson	1103	actionGroup = Gtk::ActionGroup::create();
49			actionGroup->add(Gtk::Action::create("Properties",
50			Gtk::Stock::PROPERTIES),
51			sigc::mem_fun(*this,
52			&RegionChooser::show_region_properties));
53			actionGroup->add(Gtk::Action::create("Remove", Gtk::Stock::REMOVE),
54			sigc::mem_fun(*this, &RegionChooser::delete_region));
55			actionGroup->add(Gtk::Action::create("Add", Gtk::Stock::ADD),
56			sigc::mem_fun(*this, &RegionChooser::add_region));
57
58			uiManager = Gtk::UIManager::create();
59			uiManager->insert_action_group(actionGroup);
60			Glib::ustring ui_info =
61			"<ui>"
62			" <popup name='PopupMenuInsideRegion'>"
63			" <menuitem action='Properties'/>"
64			" <menuitem action='Remove'/>"
65			" </popup>"
66			" <popup name='PopupMenuOutsideRegion'>"
67			" <menuitem action='Add'/>"
68			" </popup>"
69			"</ui>";
70			uiManager->add_ui_from_string(ui_info);
71
72			popup_menu_inside_region = dynamic_cast<Gtk::Menu*>(
73			uiManager->get_widget("/PopupMenuInsideRegion"));
74			popup_menu_outside_region = dynamic_cast<Gtk::Menu*>(
75			uiManager->get_widget("/PopupMenuOutsideRegion"));
76
77			add_events(Gdk::BUTTON_PRESS_MASK \| Gdk::BUTTON_RELEASE_MASK \|
78			Gdk::POINTER_MOTION_MASK \| Gdk::POINTER_MOTION_HINT_MASK);
79	persson	1052	}
80
81			RegionChooser::~RegionChooser()
82			{
83			}
84
85			void RegionChooser::on_realize()
86			{
87			// We need to call the base on_realize()
88			Gtk::DrawingArea::on_realize();
89
90			// Now we can allocate any additional resources we need
91			Glib::RefPtr<Gdk::Window> window = get_window();
92			gc = Gdk::GC::create(window);
93			window->clear();
94			}
95
96			bool RegionChooser::on_expose_event(GdkEventExpose* event)
97			{
98			Glib::RefPtr<Gdk::Window> window = get_window();
99			window->clear();
100			const int h = 40;
101	persson	1090	const int w = width - 1;
102	persson	1052	const int bh = int(h * 0.55);
103
104			Glib::RefPtr<const Gdk::GC> black = get_style()->get_black_gc();
105			Glib::RefPtr<const Gdk::GC> white = get_style()->get_white_gc();
106
107			window->draw_rectangle(black, false, 0, h1, w, h - 1);
108			window->draw_rectangle(white, true, 1, h1 + 1, w - 1, h - 2);
109			for (int i = 0 ; i < 128 ; i++) {
110			int note = (i + 3) % 12;
111			int x = int(w * i / 128.0 + 0.5);
112
113			if (note == 1 \|\| note == 4 \|\| note == 6 \|\| note == 9 \|\| note == 11) {
114			int x2 = int(w * (i + 0.5) / 128.0 + 0.5);
115			window->draw_line(black, x2, h1 + bh, x2, h1 + h);
116
117			int x3 = int(w * (i + 1) / 128.0 + 0.5);
118			window->draw_rectangle(black, true, x, h1 + 1, x3 - x + 1, bh);
119			} else if (note == 3 \|\| note == 8) {
120			window->draw_line(black, x, h1 + 1, x, h1 + h);
121			}
122			}
123
124			if (instrument) {
125			int i = 0;
126			gig::Region *nextRegion;
127			int x3 = -1;
128			for (gig::Region *r = instrument->GetFirstRegion() ;
129			r ;
130			r = nextRegion) {
131
132			if (x3 < 0) x3 = int(w * (r->KeyRange.low) / 128.0 + 0.5);
133			nextRegion = instrument->GetNextRegion();
134			if (!nextRegion \|\| r->KeyRange.high + 1 != nextRegion->KeyRange.low) {
135			int x2 = int(w * (r->KeyRange.high + 1) / 128.0 + 0.5);
136			window->draw_line(black, x3, 0, x2, 0);
137			window->draw_line(black, x3, h1 - 1, x2, h1 - 1);
138			window->draw_line(black, x2, 1, x2, h1 - 2);
139			window->draw_rectangle(white, true, x3 + 1, 1, x2 - x3 - 1, h1 - 2);
140			x3 = -1;
141			}
142			i++;
143			}
144
145			for (gig::Region *r = instrument->GetFirstRegion() ;
146			r ;
147			r = instrument->GetNextRegion()) {
148			int x = int(w * (r->KeyRange.low) / 128.0 + 0.5);
149			window->draw_line(black, x, 1, x, h1 - 2);
150			}
151
152			if (region) {
153			int x1 = int(w * (region->KeyRange.low) / 128.0 + 0.5);
154			int x2 = int(w * (region->KeyRange.high + 1) / 128.0 + 0.5);
155			gc->set_foreground(red);
156			window->draw_rectangle(gc, true, x1 + 1, 1, x2 - x1 - 1, h1 - 2);
157			}
158			}
159			return true;
160			}
161
162
163			void RegionChooser::on_size_request(GtkRequisition* requisition)
164			{
165			*requisition = GtkRequisition();
166			requisition->height = 40 + 20;
167			requisition->width = 500;
168			}
169
170
171	persson	1090	// not used
172	persson	1052	void RegionChooser::draw_region(int from, int to, const Gdk::Color& color)
173			{
174			const int h = 40;
175	persson	1090	const int w = width;
176	persson	1052	const int bh = int(h * 0.55);
177
178			Glib::RefPtr<Gdk::Window> window = get_window();
179			gc->set_foreground(color);
180
181			for (int i = from ; i < to ; i++) {
182			int note = (i + 3) % 12;
183			int x = int(w * i / 128.0 + 0.5) + 1;
184			int x2 = int(w * (i + 1.5) / 128.0 + 0.5);
185			int x3 = int(w * (i + 1) / 128.0 + 0.5);
186			int x4 = int(w * (i - 0.5) / 128 + 0.5) + 1;
187			int w1 = x3 - x;
188			switch (note) {
189			case 0: case 5: case 10:
190			window->draw_rectangle(gc, true, x, h1 + 1, w1, bh);
191			window->draw_rectangle(gc, true, x4, h1 + bh + 1, x2 - x4, h - bh - 2);
192			break;
193			case 2: case 7:
194			window->draw_rectangle(gc, true, x, h1 + 1, w1, bh);
195			window->draw_rectangle(gc, true, x4, h1 + bh + 1, x3 - x4, h - bh - 2);
196			break;
197			case 3: case 8:
198			window->draw_rectangle(gc, true, x, h1 + 1, w1, bh);
199			window->draw_rectangle(gc, true, x, h1 + bh + 1, x2 - x, h - bh - 2);
200			break;
201			default:
202			window->draw_rectangle(gc, true, x, h1 + 1, w1, bh - 1);
203			break;
204			}
205			}
206			}
207
208			void RegionChooser::set_instrument(gig::Instrument* instrument)
209			{
210			this->instrument = instrument;
211			region = instrument->GetFirstRegion();
212			queue_draw();
213			sel_changed_signal.emit();
214			}
215
216			void RegionChooser::set_region(gig::Region* region)
217			{
218			this->region = region;
219			queue_draw();
220			}
221
222	persson	1090	bool RegionChooser::on_button_release_event(GdkEventButton* event)
223			{
224			if (resize.active) {
225			get_window()->pointer_ungrab(event->time);
226			resize.active = false;
227
228			if (resize.mode == resize.moving_high_limit) {
229			resize.region->KeyRange.high = resize.pos - 1;
230			} else if (resize.mode == resize.moving_low_limit) {
231			resize.region->KeyRange.low = resize.pos;
232			}
233
234			if (!is_in_resize_zone(event->x, event->y) && cursor_is_resize) {
235			get_window()->set_cursor();
236			cursor_is_resize = false;
237			}
238			}
239			return true;
240			}
241
242	persson	1052	bool RegionChooser::on_button_press_event(GdkEventButton* event)
243			{
244	persson	1103	if (!instrument) return true;
245
246			int k = int(event->x / (width - 1) * 128.0);
247
248			if (event->type == GDK_BUTTON_PRESS && event->button == 3) {
249			gig::Region* r = get_region(k);
250			if (r) {
251			region = r;
252			queue_draw();
253			sel_changed_signal.emit();
254			popup_menu_inside_region->popup(event->button, event->time);
255			} else {
256			new_region_pos = k;
257			popup_menu_outside_region->popup(event->button, event->time);
258			}
259			} else {
260	persson	1090	if (is_in_resize_zone(event->x, event->y)) {
261			Gdk::Cursor double_arrow(Gdk::SB_H_DOUBLE_ARROW);
262			get_window()->pointer_grab(false,
263			Gdk::BUTTON_RELEASE_MASK \|
264			Gdk::POINTER_MOTION_MASK \|
265			Gdk::POINTER_MOTION_HINT_MASK,
266			double_arrow, event->time);
267			resize.active = true;
268			} else {
269	persson	1103	gig::Region* r = get_region(k);
270			if (r) {
271			region = r;
272			queue_draw();
273			sel_changed_signal.emit();
274	persson	1052	}
275			}
276			}
277	persson	1103	return true;
278	persson	1052	}
279
280	persson	1103	gig::Region* RegionChooser::get_region(int key)
281			{
282			for (gig::Region *r = instrument->GetFirstRegion() ; r ;
283			r = instrument->GetNextRegion()) {
284			if (key < r->KeyRange.low) return 0;
285			if (key <= r->KeyRange.high) return r;
286			}
287			return 0;
288			}
289
290	persson	1052	bool RegionChooser::on_motion_notify_event(GdkEventMotion* event)
291			{
292	persson	1090	const int w = width - 1;
293			Glib::RefPtr<Gdk::Window> window = get_window();
294			int x, y;
295			Gdk::ModifierType state = Gdk::ModifierType(0);
296			window->get_pointer(x, y, state);
297			if (resize.active) {
298			int k = int(double(x) / w * 128.0 + 0.5);
299
300			if (k < resize.min) k = resize.min;
301			else if (k > resize.max) k = resize.max;
302
303			if (k != resize.pos) {
304			if (resize.mode == resize.undecided) {
305			if (k < resize.pos) {
306			// edit high limit of prev_region
307			resize.max = resize.region->KeyRange.low;
308			resize.region = resize.prev_region;
309			resize.mode = resize.moving_high_limit;
310			} else {
311			// edit low limit of region
312			resize.min = resize.prev_region->KeyRange.high + 1;
313			resize.mode = resize.moving_low_limit;
314			}
315			}
316			Glib::RefPtr<const Gdk::GC> black = get_style()->get_black_gc();
317			Glib::RefPtr<const Gdk::GC> white = get_style()->get_white_gc();
318			if (region == resize.region) {
319			gc->set_foreground(red);
320			white = gc;
321			}
322			Glib::RefPtr<const Gdk::GC> bg = get_style()->get_bg_gc(Gtk::STATE_NORMAL);
323			int prevx = int(w * resize.pos / 128.0 + 0.5);
324			x = int(w * k / 128.0 + 0.5);
325
326			if (resize.mode == resize.moving_high_limit) {
327			if (k > resize.pos) {
328			window->draw_rectangle(white, true, prevx, 1, x - prevx, h1 - 2);
329			window->draw_line(black, prevx, 0, x, 0);
330			window->draw_line(black, prevx, h1 - 1, x, h1 - 1);
331			} else {
332			int xx = ((resize.pos == resize.max && resize.max != 128) ? 1 : 0);
333			window->draw_rectangle(bg, true, x + 1, 0, prevx - x - xx, h1);
334			}
335			} else {
336			if (k < resize.pos) {
337			window->draw_rectangle(white, true, x + 1, 1, prevx - x, h1 - 2);
338			window->draw_line(black, x, 0, prevx, 0);
339			window->draw_line(black, x, h1 - 1, prevx, h1 - 1);
340			} else {
341			int xx = ((resize.pos == resize.min && resize.min != 0) ? 1 : 0);
342			window->draw_rectangle(bg, true, prevx + xx, 0, x - prevx - xx, h1);
343			}
344			}
345			window->draw_line(black, x, 1, x, h1 - 2);
346			resize.pos = k;
347	persson	1052	}
348	persson	1090	} else {
349			if (is_in_resize_zone(x, y)) {
350			if (!cursor_is_resize) {
351			Gdk::Cursor double_arrow(Gdk::SB_H_DOUBLE_ARROW);
352			window->set_cursor(double_arrow);
353			cursor_is_resize = true;
354			}
355			} else if (cursor_is_resize) {
356			window->set_cursor();
357			cursor_is_resize = false;
358			}
359	persson	1052	}
360	persson	1090
361			return true;
362	persson	1052	}
363
364	persson	1090	bool RegionChooser::is_in_resize_zone(double x, double y) {
365			const int w = width - 1;
366
367			if (instrument && y >= 0 && y <= h1) {
368			gig::Region* prev_region = 0;
369			gig::Region* next_region;
370			for (gig::Region* r = instrument->GetFirstRegion() ; r ; r = next_region) {
371			next_region = instrument->GetNextRegion();
372
373			int lo = int(w * (r->KeyRange.low) / 128.0 + 0.5);
374			if (x <= lo - 2) break;
375			if (x < lo + 2) {
376			resize.region = r;
377			resize.pos = r->KeyRange.low;
378			resize.max = r->KeyRange.high;
379
380			if (prev_region && prev_region->KeyRange.high + 1 == r->KeyRange.low) {
381			// we don't know yet if it's the high limit of
382			// prev_region or the low limit of r that's going
383			// to be edited
384			resize.mode = resize.undecided;
385			resize.min = prev_region->KeyRange.low + 1;
386			resize.prev_region = prev_region;
387			return true;
388			}
389
390			// edit low limit
391			resize.mode = resize.moving_low_limit;
392			resize.min = prev_region ? prev_region->KeyRange.high + 1 : 0;
393			return true;
394			}
395			if (!next_region \|\| r->KeyRange.high + 1 != next_region->KeyRange.low) {
396			int hi = int(w * (r->KeyRange.high + 1) / 128.0 + 0.5);
397			if (x <= hi - 2) break;
398			if (x < hi + 2) {
399			// edit high limit
400			resize.region = r;
401			resize.pos = r->KeyRange.high + 1;
402			resize.mode = resize.moving_high_limit;
403			resize.min = r->KeyRange.low + 1;
404			resize.max = next_region ? next_region->KeyRange.low : 128;
405			return true;
406			}
407			}
408			prev_region = r;
409			}
410			}
411			return false;
412			}
413
414	persson	1052	sigc::signal<void> RegionChooser::signal_sel_changed()
415			{
416			return sel_changed_signal;
417			}
418	persson	1103
419			void RegionChooser::show_region_properties()
420			{
421			}
422
423			void RegionChooser::add_region()
424			{
425			gig::Region* r;
426			for (r = instrument->GetFirstRegion() ; r ; r = instrument->GetNextRegion()) {
427			if (r->KeyRange.low > new_region_pos) break;
428			}
429
430			region = instrument->AddRegion();
431			region->KeyRange.low = region->KeyRange.high = new_region_pos;
432
433			instrument->MoveRegion(region, r);
434			queue_draw();
435			sel_changed_signal.emit();
436			}
437
438			void RegionChooser::delete_region()
439			{
440			instrument->DeleteRegion(region);
441			region = 0;
442			queue_draw();
443			sel_changed_signal.emit();
444			}