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livetrax/gtk2_ardour/editor_canvas.cc

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/*
Copyright (C) 2005 Paul Davis
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 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
$Id$
*/
#include <libgnomecanvasmm/init.h>
#include <jack/types.h>
#include <ardour/audioregion.h>
#include "ardour_ui.h"
#include "editor.h"
#include "waveview.h"
#include "simplerect.h"
#include "simpleline.h"
#include "imageframe.h"
#include "waveview_p.h"
#include "simplerect_p.h"
#include "simpleline_p.h"
#include "imageframe_p.h"
#include "canvas_impl.h"
#include "editing.h"
#include "rgb_macros.h"
#include "utils.h"
#include "time_axis_view.h"
#include "audio_time_axis.h"
#include "i18n.h"
using namespace std;
using namespace sigc;
using namespace ARDOUR;
using namespace Gtk;
using namespace Glib;
using namespace Gtkmm2ext;
using namespace Editing;
/* XXX this is a hack. it ought to be the maximum value of an jack_nframes_t */
const double max_canvas_coordinate = (double) JACK_MAX_FRAMES;
extern "C"
{
GType gnome_canvas_simpleline_get_type(void);
GType gnome_canvas_simplerect_get_type(void);
GType gnome_canvas_waveview_get_type(void);
GType gnome_canvas_imageframe_get_type(void);
}
static void ardour_canvas_type_init()
{
// Map gtypes to gtkmm wrapper-creation functions:
Glib::wrap_register(gnome_canvas_simpleline_get_type(), &Gnome::Canvas::SimpleLine_Class::wrap_new);
Glib::wrap_register(gnome_canvas_simplerect_get_type(), &Gnome::Canvas::SimpleRect_Class::wrap_new);
Glib::wrap_register(gnome_canvas_waveview_get_type(), &Gnome::Canvas::WaveView_Class::wrap_new);
Glib::wrap_register(gnome_canvas_imageframe_get_type(), &Gnome::Canvas::ImageFrame_Class::wrap_new);
// Register the gtkmm gtypes:
(void) Gnome::Canvas::WaveView::get_type();
(void) Gnome::Canvas::SimpleLine::get_type();
(void) Gnome::Canvas::SimpleRect::get_type();
(void) Gnome::Canvas::ImageFrame::get_type();
}
void
Editor::initialize_canvas ()
{
ArdourCanvas::init ();
ardour_canvas_type_init ();
/* don't try to center the canvas */
track_canvas.set_center_scroll_region (false);
track_canvas.signal_event().connect (bind (mem_fun (*this, &Editor::track_canvas_event), (ArdourCanvas::Item*) 0));
track_canvas.set_name ("EditorMainCanvas");
track_canvas.add_events (Gdk::POINTER_MOTION_HINT_MASK|Gdk::SCROLL_MASK);
track_canvas.signal_leave_notify_event().connect (mem_fun(*this, &Editor::left_track_canvas));
track_canvas.set_flags (CAN_FOCUS);
/* set up drag-n-drop */
vector<TargetEntry> target_table;
// Drag-N-Drop from the region list can generate this target
target_table.push_back (TargetEntry ("regions"));
target_table.push_back (TargetEntry ("text/plain"));
target_table.push_back (TargetEntry ("text/uri-list"));
target_table.push_back (TargetEntry ("application/x-rootwin-drop"));
track_canvas.drag_dest_set (target_table);
track_canvas.signal_drag_data_received().connect (mem_fun(*this, &Editor::track_canvas_drag_data_received));
/* stuff for the verbose canvas cursor */
Pango::FontDescription font = get_font_for_style (N_("VerboseCanvasCursor"));
verbose_canvas_cursor = new ArdourCanvas::Text (*track_canvas.root());
verbose_canvas_cursor->property_font_desc() = font;
verbose_canvas_cursor->property_anchor() = ANCHOR_NW;
verbose_canvas_cursor->property_fill_color_rgba() = color_map[cVerboseCanvasCursor];
verbose_cursor_visible = false;
/* a group to hold time (measure) lines */
time_line_group = new ArdourCanvas::Group (*track_canvas.root(), 0.0, 0.0);
cursor_group = new ArdourCanvas::Group (*track_canvas.root(), 0.0, 0.0);
time_canvas.set_name ("EditorTimeCanvas");
time_canvas.add_events (Gdk::POINTER_MOTION_HINT_MASK);
time_canvas.set_flags (CAN_FOCUS);
time_canvas.set_center_scroll_region (false);
meter_group = new ArdourCanvas::Group (*time_canvas.root(), 0.0, 0.0);
tempo_group = new ArdourCanvas::Group (*time_canvas.root(), 0.0, timebar_height);
marker_group = new ArdourCanvas::Group (*time_canvas.root(), 0.0, timebar_height * 2.0);
range_marker_group = new ArdourCanvas::Group (*time_canvas.root(), 0.0, timebar_height * 3.0);
transport_marker_group = new ArdourCanvas::Group (*time_canvas.root(), 0.0, timebar_height * 4.0);
tempo_bar = new ArdourCanvas::SimpleRect (*tempo_group, 0.0, 0.0, max_canvas_coordinate, timebar_height);
tempo_bar->property_fill_color_rgba() = color_map[cTempoBar];
tempo_bar->property_outline_pixels() = 0;
meter_bar = new ArdourCanvas::SimpleRect (*meter_group, 0.0, 0.0, max_canvas_coordinate, timebar_height);
meter_bar->property_fill_color_rgba() = color_map[cMeterBar];
meter_bar->property_outline_pixels() = 0;
marker_bar = new ArdourCanvas::SimpleRect (*marker_group, 0.0, 0.0, max_canvas_coordinate, timebar_height);
marker_bar->property_fill_color_rgba() = color_map[cMarkerBar];
marker_bar->property_outline_pixels() = 0;
range_marker_bar = new ArdourCanvas::SimpleRect (*range_marker_group, 0.0, 0.0, max_canvas_coordinate, timebar_height);
range_marker_bar->property_fill_color_rgba() = color_map[cRangeMarkerBar];
range_marker_bar->property_outline_pixels() = 0;
transport_marker_bar = new ArdourCanvas::SimpleRect (*transport_marker_group, 0.0, 0.0, max_canvas_coordinate, timebar_height);
transport_marker_bar->property_fill_color_rgba() = color_map[cTransportMarkerBar];
transport_marker_bar->property_outline_pixels() = 0;
range_bar_drag_rect = new ArdourCanvas::SimpleRect (*range_marker_group, 0.0, 0.0, max_canvas_coordinate, timebar_height);
range_bar_drag_rect->property_fill_color_rgba() = color_map[cRangeDragBarRectFill];
range_bar_drag_rect->property_outline_color_rgba() = color_map[cRangeDragBarRect];
range_bar_drag_rect->property_outline_pixels() = 0;
range_bar_drag_rect->hide ();
transport_bar_drag_rect = new ArdourCanvas::SimpleRect (*transport_marker_group, 0.0, 0.0, max_canvas_coordinate, timebar_height);
transport_bar_drag_rect ->property_fill_color_rgba() = color_map[cTransportDragRectFill];
transport_bar_drag_rect->property_outline_color_rgba() = color_map[cTransportDragRect];
transport_bar_drag_rect->property_outline_pixels() = 0;
transport_bar_drag_rect->hide ();
marker_drag_line_points.push_back(Gnome::Art::Point(0.0, 0.0));
marker_drag_line_points.push_back(Gnome::Art::Point(0.0, 0.0));
marker_drag_line = new ArdourCanvas::Line (*track_canvas.root());
marker_drag_line->property_width_pixels() = 1;
marker_drag_line->property_fill_color_rgba() = color_map[cMarkerDragLine];
marker_drag_line->property_points() = marker_drag_line_points;
marker_drag_line->hide();
range_marker_drag_rect = new ArdourCanvas::SimpleRect (*track_canvas.root(), 0.0, 0.0, 0.0, 0.0);
range_marker_drag_rect->property_fill_color_rgba() = color_map[cRangeDragRectFill];
range_marker_drag_rect->property_outline_color_rgba() = color_map[cRangeDragRect];
range_marker_drag_rect->hide ();
transport_loop_range_rect = new ArdourCanvas::SimpleRect (*time_line_group, 0.0, 0.0, 0.0, 0.0);
transport_loop_range_rect->property_fill_color_rgba() = color_map[cTransportLoopRectFill];
transport_loop_range_rect->property_outline_color_rgba() = color_map[cTransportLoopRect];
transport_loop_range_rect->property_outline_pixels() = 1;
transport_loop_range_rect->hide();
transport_punch_range_rect = new ArdourCanvas::SimpleRect (*time_line_group, 0.0, 0.0, 0.0, 0.0);
transport_punch_range_rect->property_fill_color_rgba() = color_map[cTransportPunchRectFill];
transport_punch_range_rect->property_outline_color_rgba() = color_map[cTransportPunchRect];
transport_punch_range_rect->property_outline_pixels() = 0;
transport_punch_range_rect->hide();
transport_loop_range_rect->lower_to_bottom (); // loop on the bottom
transport_punchin_line = new ArdourCanvas::SimpleLine (*time_line_group);
transport_punchin_line->property_x1() = 0.0;
transport_punchin_line->property_y1() = 0.0;
transport_punchin_line->property_x2() = 0.0;
transport_punchin_line->property_y2() = 0.0;
transport_punchin_line->property_color_rgba() = color_map[cPunchInLine];
transport_punchin_line->hide ();
transport_punchout_line = new ArdourCanvas::SimpleLine (*time_line_group);
transport_punchout_line->property_x1() = 0.0;
transport_punchout_line->property_y1() = 0.0;
transport_punchout_line->property_x2() = 0.0;
transport_punchout_line->property_y2() = 0.0;
transport_punchout_line->property_color_rgba() = color_map[cPunchOutLine];
transport_punchout_line->hide();
// used to show zoom mode active zooming
zoom_rect = new ArdourCanvas::SimpleRect (*track_canvas.root(), 0.0, 0.0, 0.0, 0.0);
zoom_rect->property_fill_color_rgba() = color_map[cZoomRectFill];
zoom_rect->property_outline_color_rgba() = color_map[cZoomRect];
zoom_rect->property_outline_pixels() = 1;
zoom_rect->hide();
zoom_rect->signal_event().connect (bind (mem_fun (*this, &Editor::canvas_zoom_rect_event), (ArdourCanvas::Item*) 0));
// used as rubberband rect
rubberband_rect = new ArdourCanvas::SimpleRect (*track_canvas.root(), 0.0, 0.0, 0.0, 0.0);
rubberband_rect->property_outline_color_rgba() = color_map[cRubberBandRect];
rubberband_rect->property_fill_color_rgba() = (guint32) color_map[cRubberBandRectFill];
rubberband_rect->property_outline_pixels() = 1;
rubberband_rect->hide();
tempo_bar->signal_event().connect (bind (mem_fun (*this, &Editor::canvas_tempo_bar_event), tempo_bar));
meter_bar->signal_event().connect (bind (mem_fun (*this, &Editor::canvas_meter_bar_event), meter_bar));
marker_bar->signal_event().connect (bind (mem_fun (*this, &Editor::canvas_marker_bar_event), marker_bar));
range_marker_bar->signal_event().connect (bind (mem_fun (*this, &Editor::canvas_range_marker_bar_event), range_marker_bar));
transport_marker_bar->signal_event().connect (bind (mem_fun (*this, &Editor::canvas_transport_marker_bar_event), transport_marker_bar));
/* separator lines */
tempo_line = new ArdourCanvas::SimpleLine (*tempo_group, 0, timebar_height, max_canvas_coordinate, timebar_height);
tempo_line->property_color_rgba() = RGBA_TO_UINT (0,0,0,255);
meter_line = new ArdourCanvas::SimpleLine (*meter_group, 0, timebar_height, max_canvas_coordinate, timebar_height);
meter_line->property_color_rgba() = RGBA_TO_UINT (0,0,0,255);
marker_line = new ArdourCanvas::SimpleLine (*marker_group, 0, timebar_height, max_canvas_coordinate, timebar_height);
marker_line->property_color_rgba() = RGBA_TO_UINT (0,0,0,255);
range_marker_line = new ArdourCanvas::SimpleLine (*range_marker_group, 0, timebar_height, max_canvas_coordinate, timebar_height);
range_marker_line->property_color_rgba() = RGBA_TO_UINT (0,0,0,255);
transport_marker_line = new ArdourCanvas::SimpleLine (*transport_marker_group, 0, timebar_height, max_canvas_coordinate, timebar_height);
transport_marker_line->property_color_rgba() = RGBA_TO_UINT (0,0,0,255);
ZoomChanged.connect (bind (mem_fun(*this, &Editor::update_loop_range_view), false));
ZoomChanged.connect (bind (mem_fun(*this, &Editor::update_punch_range_view), false));
double time_height = timebar_height * 5;
double time_width = FLT_MAX/frames_per_unit;
time_canvas.set_scroll_region(0.0, 0.0, time_width, time_height);
edit_cursor = new Cursor (*this, "blue", &Editor::canvas_edit_cursor_event);
playhead_cursor = new Cursor (*this, "red", &Editor::canvas_playhead_cursor_event);
track_canvas.signal_size_allocate().connect (mem_fun(*this, &Editor::track_canvas_allocate));
}
void
Editor::track_canvas_allocate (Gtk::Allocation alloc)
{
static bool first_time = true;
canvas_width = alloc.get_width();
canvas_height = alloc.get_height();
if (session == 0 && !ARDOUR_UI::instance()->will_create_new_session_automatically()) {
/* this mess of code is here to find out how wide this text is and
position the message in the center of the editor window.
*/
int pixel_height;
int pixel_width;
ustring msg = string_compose ("<span face=\"sans\" style=\"normal\" weight=\"bold\" size=\"x-large\">%1%2</span>",
_("Start a new session\n"), _("via Session menu"));
RefPtr<Pango::Layout> layout = create_pango_layout (msg);
Pango::FontDescription font = get_font_for_style (N_("FirstActionMessage"));
layout->get_pixel_size (pixel_width, pixel_height);
if (first_action_message == 0) {
first_action_message = new ArdourCanvas::Text (*track_canvas.root());
first_action_message->property_font_desc() = font;
first_action_message->property_fill_color_rgba() = color_map[cFirstActionMessage];
first_action_message->property_x() = (canvas_width - pixel_width) / 2.0;
first_action_message->property_y() = (canvas_height/2.0) - pixel_height;
first_action_message->property_anchor() = ANCHOR_NORTH_WEST;
first_action_message->property_markup() = msg;
} else {
/* center it */
first_action_message->property_x() = (canvas_width - pixel_width) / 2.0;
first_action_message->property_y() = (canvas_height/2.0) - pixel_height;
}
}
zoom_range_clock.set ((jack_nframes_t) floor ((canvas_width * frames_per_unit)));
edit_cursor->set_position (edit_cursor->current_frame);
playhead_cursor->set_position (playhead_cursor->current_frame);
reset_scrolling_region ();
if (edit_cursor) edit_cursor->set_length (canvas_height);
if (playhead_cursor) playhead_cursor->set_length (canvas_height);
if (marker_drag_line) {
marker_drag_line_points.back().set_x(canvas_height);
marker_drag_line->property_points() = marker_drag_line_points;
}
if (range_marker_drag_rect) {
range_marker_drag_rect->property_y1() = 0.0;
range_marker_drag_rect->property_y2() = canvas_height;
}
if (transport_loop_range_rect) {
transport_loop_range_rect->property_y1() = 0.0;
transport_loop_range_rect->property_y2() = canvas_height;
}
if (transport_punch_range_rect) {
transport_punch_range_rect->property_y1() = 0.0;
transport_punch_range_rect->property_y2() = canvas_height;
}
if (transport_punchin_line) {
transport_punchin_line->property_y1() = 0.0;
transport_punchin_line->property_y2() = canvas_height;
}
if (transport_punchout_line) {
transport_punchout_line->property_y1() = 0.0;
transport_punchout_line->property_y2() = canvas_height;
}
update_fixed_rulers ();
if (is_visible() && first_time) {
tempo_map_changed (Change (0));
first_time = false;
} else {
redisplay_tempo ();
}
Resized (); /* EMIT_SIGNAL */
}
void
Editor::reset_scrolling_region (Gtk::Allocation* alloc)
{
TreeModel::Children rows = route_display_model->children();
TreeModel::Children::iterator i;
double pos;
for (pos = 0, i = rows.begin(); i != rows.end(); ++i) {
TimeAxisView *tv = (*i)[route_display_columns.tv];
if (tv != 0) {
pos += tv->effective_height;
pos += track_spacing;
}
}
double last_canvas_unit = ceil ((double) max_frames / frames_per_unit);
track_canvas.set_scroll_region (0.0, 0.0, max (last_canvas_unit, canvas_width), pos);
// XXX what is the correct height value for the time canvas ? this overstates it
time_canvas.set_scroll_region ( 0.0, 0.0, max (last_canvas_unit, canvas_width), canvas_height);
controls_layout.queue_resize();
}
void
Editor::controls_layout_size_request (Requisition* req)
{
TreeModel::Children rows = route_display_model->children();
TreeModel::Children::iterator i;
double pos;
for (pos = 0, i = rows.begin(); i != rows.end(); ++i) {
TimeAxisView *tv = (*i)[route_display_columns.tv];
if (tv != 0) {
pos += tv->effective_height;
pos += track_spacing;
}
}
RefPtr<Gdk::Screen> screen = get_screen();
if (!screen) {
screen = Gdk::Screen::get_default();
}
/* never let the width of the controls area shrink horizontally */
edit_controls_vbox.check_resize();
req->width = max (edit_controls_vbox.get_width(), controls_layout.get_width());
req->height = min ((gint) pos, (screen->get_height() - 400));
/* this one is important: it determines how big the layout thinks it really is, as
opposed to what it displays on the screen
*/
controls_layout.set_size (req->width, (gint) pos);
}
bool
Editor::track_canvas_map_handler (GdkEventAny* ev)
{
track_canvas.get_window()->set_cursor (*current_canvas_cursor);
return false;
}
bool
Editor::time_canvas_map_handler (GdkEventAny* ev)
{
time_canvas.get_window()->set_cursor (*timebar_cursor);
return false;
}
void
Editor::track_canvas_drag_data_received (const RefPtr<Gdk::DragContext>& context,
int x, int y,
const SelectionData& data,
guint info, guint time)
{
if (data.get_target() == "regions") {
drop_regions (context, x, y, data, info, time);
} else {
drop_paths (context, x, y, data, info, time);
}
}
void
Editor::drop_paths (const RefPtr<Gdk::DragContext>& context,
int x, int y,
const SelectionData& data,
guint info, guint time)
{
TimeAxisView* tvp;
AudioTimeAxisView* tv;
double cy;
vector<ustring> paths;
string spath;
GdkEvent ev;
jack_nframes_t frame;
if (convert_drop_to_paths (paths, context, x, y, data, info, time)) {
goto out;
}
/* D-n-D coordinates are window-relative, so convert to "world" coordinates
*/
double wx;
double wy;
track_canvas.window_to_world (x, y, wx, wy);
wx += horizontal_adjustment.get_value();
wy += vertical_adjustment.get_value();
ev.type = GDK_BUTTON_RELEASE;
ev.button.x = wx;
ev.button.y = wy;
frame = event_frame (&ev, 0, &cy);
snap_to (frame);
if ((tvp = trackview_by_y_position (cy)) == 0) {
/* drop onto canvas background: create new tracks */
jack_nframes_t pos = 0;
do_embed (paths, false, ImportAsTrack, 0, pos, false);
} else if ((tv = dynamic_cast<AudioTimeAxisView*>(tvp)) != 0) {
/* check that its an audio track, not a bus */
if (tv->get_diskstream()) {
do_embed (paths, false, ImportToTrack, tv->audio_track(), frame, true);
}
}
out:
context->drag_finish (true, false, time);
}
void
Editor::drop_regions (const RefPtr<Gdk::DragContext>& context,
int x, int y,
const SelectionData& data,
guint info, guint time)
{
const DnDTreeView::SerializedObjectPointers* sr = reinterpret_cast<const DnDTreeView::SerializedObjectPointers*> (data.get_data());
for (uint32_t i = 0; i < sr->cnt; ++i) {
Region* r = reinterpret_cast<Region*> (sr->ptr[i]);
AudioRegion* ar;
if ((ar = dynamic_cast<AudioRegion*>(r)) != 0) {
insert_region_list_drag (*ar, x, y);
}
}
context->drag_finish (true, false, time);
}