/* === S Y N F I G ========================================================= */
/*! \file widget_timeslider.cpp
** \brief Time Slider Widget Implementation File
**
** $Id$
**
** \legal
** Copyright (c) 2004 Adrian Bentley
** Copyright (c) 2007, 2008 Chris Moore
** Copyright (c) 2012, Carlos López
** ......... ... 2018 Ivan Mahonin
**
** This package 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 package 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.
** \endlegal
*/
/* ========================================================================= */
/* === H E A D E R S ======================================================= */
#ifdef USING_PCH
# include "pch.h"
#else
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <cmath>
#include <gdkmm/general.h>
#include <ETL/misc>
#include <synfig/general.h>
#include <gui/app.h>
#include "widget_timeslider.h"
#include <gui/localization.h>
#include "gui/timeplotdata.h"
#endif
/* === U S I N G =========================================================== */
using namespace synfig;
using namespace studio;
/* === M A C R O S ========================================================= */
/* === G L O B A L S ======================================================= */
const double zoominfactor = 1.25;
const double zoomoutfactor = 1/zoominfactor;
const int fullheight = 20;
/* === P R O C E D U R E S ================================================= */
/* === M E T H O D S ======================================================= */
static void
calc_divisions(float fps, double range, double sub_range, double &out_step, int &out_subdivisions)
{
int ifps = etl::round_to_int(fps);
if (ifps < 1) ifps = 1;
// build a list of all the factors of the frame rate
int pos = 0;
std::vector<double> ranges;
for(int i = 1; i*i <= ifps; i++)
if (ifps % i == 0) {
ranges.insert(ranges.begin() + pos, i/fps);
if (i*i != ifps)
ranges.insert(ranges.begin() + pos + 1, ifps/i/fps);
pos++;
}
{ // fill in any gaps where one factor is more than 2 times the previous
std::vector<double>::iterator iter, next;
pos = 0;
for(int pos = 0; pos < (int)ranges.size()-1; pos++) {
next = ranges.begin() + pos;
iter = next++;
if (*iter*2 < *next)
ranges.insert(next, *iter*2);
}
}
double more_ranges[] = {
2, 3, 5, 10, 20, 30, 60, 90, 120, 180,
300, 600, 1200, 1800, 2700, 3600, 3600*2,
3600*4, 3600*8, 3600*16, 3600*32, 3600*64,
3600*128, 3600*256, 3600*512, 3600*1024 };
ranges.insert(ranges.end(), more_ranges, more_ranges + sizeof(more_ranges)/sizeof(double));
double mid_range = (range + sub_range)/2;
// find most ideal scale
double scale;
{
std::vector<double>::iterator next = etl::binary_find(ranges.begin(), ranges.end(), mid_range);
std::vector<double>::iterator iter = next++;
if (iter == ranges.end()) iter--;
if (next == ranges.end()) next--;
if (fabs(*next - mid_range) < fabs(*iter - mid_range))
iter = next;
scale = *iter;
}
// subdivide into this many tick marks (8 or less)
int subdiv = etl::round_to_int(scale * ifps);
if (subdiv > 8) {
const int ideal = subdiv;
// find a number of tick marks that nicely divides the scale
// (5 minutes divided by 6 is 50s, but that's not 'nice' -
// 5 ticks of 1m each is much simpler than 6 ticks of 50s)
for (subdiv = 8; subdiv > 0; subdiv--)
if ((ideal <= ifps*2 && (ideal % (subdiv )) == 0) ||
(ideal <= ifps*2*60 && (ideal % (subdiv*ifps )) == 0) ||
(ideal <= ifps*2*60*60 && (ideal % (subdiv*ifps*60 )) == 0) ||
(true && (ideal % (subdiv*ifps*60*60)) == 0))
break;
// if we didn't find anything, use 4 ticks
if (!subdiv)
subdiv = 4;
}
out_step = scale;
out_subdivisions = subdiv;
}
/* === E N T R Y P O I N T ================================================= */
Widget_Timeslider::Widget_Timeslider():
layout(Pango::Layout::create(get_pango_context())),
lastx()
{
set_size_request(-1, fullheight);
{ // prepare pattern for play bounds
const int pattern_step = 32;
Cairo::RefPtr<Cairo::ImageSurface> surface = Cairo::ImageSurface::create(Cairo::FORMAT_ARGB32, pattern_step, pattern_step);
Cairo::RefPtr<Cairo::Context> cr = Cairo::Context::create(surface);
cr->set_source_rgba(0.0, 0.0, 0.0, 0.25);
cr->scale((double)pattern_step, (double)pattern_step);
cr->set_line_width(0.375);
cr->move_to(1.75, -1.0);
cr->line_to(-1.0, 1.75);
cr->stroke();
cr->move_to(2.0, -0.25);
cr->line_to(-0.25, 2.0);
cr->stroke();
surface->flush();
play_bounds_pattern = Cairo::SurfacePattern::create(surface);
play_bounds_pattern->set_filter(Cairo::FILTER_NEAREST);
play_bounds_pattern->set_extend(Cairo::EXTEND_REPEAT);
}
time_plot_data = new TimePlotData(*this);
time_plot_data->set_extra_time_margin(get_height());
// click / scroll / zoom
add_events( Gdk::BUTTON_PRESS_MASK
| Gdk::BUTTON_RELEASE_MASK
| Gdk::BUTTON_MOTION_MASK
| Gdk::SCROLL_MASK );
signal_configure_event().connect(
sigc::mem_fun(*this, &Widget_Timeslider::on_configure_event));
}
Widget_Timeslider::~Widget_Timeslider()
{
time_change.disconnect();
time_bounds_change.disconnect();
delete time_plot_data;
}
const etl::handle<TimeModel>&
Widget_Timeslider::get_time_model() const
{
return time_plot_data->time_model;
}
void
Widget_Timeslider::set_time_model(const etl::handle<TimeModel> &x)
{
time_plot_data->set_time_model(x);
}
void
Widget_Timeslider::draw_background(const Cairo::RefPtr<Cairo::Context> &cr)
{
//draw grey rectangle
cr->save();
cr->set_source_rgb(0.5, 0.5, 0.5);
cr->rectangle(0.0, 0.0, (double)get_width(), (double)get_height());
cr->fill();
cr->restore();
}
bool Widget_Timeslider::on_configure_event(GdkEventConfigure* configure)
{
time_plot_data->set_extra_time_margin(configure->height);
return false;
}
bool
Widget_Timeslider::on_draw(const Cairo::RefPtr<Cairo::Context> &cr)
{
const double mark_height = 12.0;
const double sub_mark_height = 4.0;
draw_background(cr);
if (!time_plot_data->time_model || get_width() <= 0 || get_height() <= 0) return true;
const etl::handle<TimeModel> & time_model = time_plot_data->time_model;
// Draw the time line...
double tpx = time_plot_data->get_pixel_t_coord(time_plot_data->time) + 0.5;
cr->save();
cr->set_source_rgb(1.0, 175.0/255.0, 0.0);
cr->set_line_width(1.0);
cr->move_to(tpx, 0.0);
cr->line_to(tpx, fullheight);
cr->stroke();
cr->restore();
// draw marks
// get divisions
double big_step_value;
int subdivisions;
calc_divisions(
time_model->get_frame_rate(),
140.0/time_plot_data->k,
280.0/time_plot_data->k,
big_step_value,
subdivisions );
step = time_model->round_time(Time(big_step_value/(double)subdivisions));
step = std::max(time_model->get_step_increment(), step);
Time big_step = step * (double)subdivisions;
Time current = big_step * floor((double)time_plot_data->lower_ex/(double)big_step);
current = time_model->round_time(current);
// draw
cr->save();
cr->set_source_rgb(51.0/255.0,51.0/255.0,51.0/255.0);
cr->set_line_width(1.0);
for(int i = 0; current <= time_plot_data->upper_ex; ++i, current = time_model->round_time(current + step)) {
double x = time_plot_data->get_pixel_t_coord(current) + 0.5;
if (i % subdivisions == 0) {
// draw big
cr->move_to(x, 0.0);
cr->line_to(x, mark_height);
cr->stroke();
layout->set_text(
current.get_string(
time_model->get_frame_rate(),
App::get_time_format() ));
// Approximately a font size of 8 pixels.
// Pango::SCALE = 1024
// create_attr_size waits a number in 1000th of pixels.
// Should be user customizable in the future. Now it is fixed to 10
Pango::AttrList attr_list;
Pango::AttrInt pango_size(Pango::Attribute::create_attr_size(Pango::SCALE*10));
pango_size.set_start_index(0);
pango_size.set_end_index(64);
attr_list.change(pango_size);
layout->set_attributes(attr_list);
cr->move_to(x + 1.0, 0.0);
layout->show_in_cairo_context(cr);
} else {
// draw small
cr->move_to(x, 0.0);
cr->line_to(x, sub_mark_height);
cr->stroke();
}
}
cr->restore();
// Draw the time line
Gdk::Cairo::set_source_color(cr, Gdk::Color("#ffaf00"));
cr->set_line_width(3.0);
double x = time_plot_data->get_pixel_t_coord(time_plot_data->time);
cr->move_to(x, 0.0);
cr->line_to(x, fullheight);
cr->stroke();
// Draw play bounds
if (time_model->get_play_bounds_enabled()) {
double offset = time_plot_data->get_double_pixel_t_coord(0);
Time bounds[2][2] {
{ time_plot_data->lower_ex, time_model->get_play_bounds_lower() },
{ time_model->get_play_bounds_upper(), time_plot_data->upper_ex } };
for(int i = 0; i < 2; ++i) {
if (bounds[i][0] < bounds[i][1]) {
double x0 = time_plot_data->get_double_pixel_t_coord(bounds[i][0]);
double x1 = time_plot_data->get_double_pixel_t_coord(bounds[i][1]);
double w = x1 - x0;
cr->save();
cr->rectangle(x0, 0.0, w, (double)get_height());
cr->clip();
cr->translate(offset, 0.0);
cr->set_source(play_bounds_pattern);
cr->paint();
cr->restore();
cr->save();
cr->set_line_width(1.0);
cr->set_source_rgba(0.0, 0.0, 0.0, 0.25);
cr->rectangle(x0 + 1.0, 1.0, w - 2.0, (double)get_height() - 2.0);
cr->stroke();
cr->set_source_rgba(0.0, 0.0, 0.0, 0.3);
cr->rectangle(x0 + 0.5, 0.5, w - 1.0, (double)get_height() - 1.0);
cr->stroke();
cr->restore();
}
}
}
return true;
}
bool
Widget_Timeslider::on_button_press_event(GdkEventButton *event) //for clicking
{
lastx = (double)event->x;
if (!time_plot_data->time_model || get_width() <= 0 || get_height() <= 0)
return false;
if (event->button == 1) {
Time time = time_plot_data->get_t_from_pixel_coord(event->x);
time_plot_data->time_model->set_time(time);
}
return event->button == 1 || event->button == 2;
}
bool
Widget_Timeslider::on_button_release_event(GdkEventButton *event){
lastx = (double)event->x;
return event->button == 1 || event->button == 2;
}
bool
Widget_Timeslider::on_motion_notify_event(GdkEventMotion* event) //for dragging
{
double dx = (double)event->x - lastx;
lastx = (double)event->x;
if (!time_plot_data->time_model || get_width() <= 0 || get_height() <= 0)
return false;
Gdk::ModifierType mod = Gdk::ModifierType(event->state);
if (mod & Gdk::BUTTON1_MASK) {
// scrubbing
Time time = time_plot_data->get_t_from_pixel_coord(event->x);
time_plot_data->time_model->set_time(time);
return true;
} else
if (mod & Gdk::BUTTON2_MASK) {
// scrolling
Time dt(-dx*time_plot_data->dt);
time_plot_data->time_model->move_by(dt);
return true;
}
return false;
}
bool
Widget_Timeslider::on_scroll_event(GdkEventScroll* event) //for zooming
{
etl::handle<TimeModel> &time_model = time_plot_data->time_model;
if (!time_model || get_width() <= 0 || get_height() <= 0)
return false;
Time time = time_plot_data->get_t_from_pixel_coord(event->x);
switch(event->direction) {
case GDK_SCROLL_UP: //zoom in
time_model->zoom(zoominfactor, time);
return true;
case GDK_SCROLL_DOWN: //zoom out
time_model->zoom(zoomoutfactor, time);
return true;
case GDK_SCROLL_RIGHT:
time_model->move_by(step);
return true;
case GDK_SCROLL_LEFT:
time_model->move_by(-step);
return true;
default:
break;
}
return false;
}