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Automatically scroll timeline when dragging a region.

This commit is contained in:
Jonathan Moore Liles 2008-02-16 01:21:15 -06:00
parent 477e1f5b40
commit ece5a45cb0
3 changed files with 47 additions and 2 deletions
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16
Region.C
View File

@ -19,6 +19,7 @@
#include "Track.H"
#include "Region.H"
#include "Timeline.H"
#include <FL/fl_draw.H>
#include <FL/Fl.H>
@ -27,6 +28,8 @@
#include <stdio.h>
extern Timeline timeline;
Region::Region ( int X, int Y, int W, int H, const char *L=0 ) : Waveform( X, Y, W, H, L )
{
align( FL_ALIGN_INSIDE | FL_ALIGN_LEFT | FL_ALIGN_BOTTOM | FL_ALIGN_CLIP );
@ -147,6 +150,19 @@ Region::handle ( int m )
parent()->redraw();
fl_cursor( FL_CURSOR_MOVE );
if ( Fl::event_x() >= timeline.scroll->x() + timeline.scroll->w() ||
Fl::event_x() <= timeline.scroll->x() )
{
int d;
if ( Fl::event_x() <= timeline.scroll->x() )
d = -100;
else
d = 100;
/* this drag needs to scroll */
timeline.scroll->position( timeline.scroll->xposition() + d, timeline.scroll->yposition() );
}
return 1;
default:
return 0;

26
Timeline.H Normal file
View File

@ -0,0 +1,26 @@
/*******************************************************************************/
/* Copyright (C) 2008 Jonathan Moore Liles */
/* */
/* 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; see the file COPYING. If not,write to the Free Software */
/* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
/*******************************************************************************/
#pragma once
#include <FL/Fl_Scroll.H>
struct Timeline {
Fl_Scroll *scroll;
};

7
main.C
View File

@ -37,6 +37,7 @@
Fl_Color velocity_colors[128];
#include "Track.H"
#include "Timeline.H"
void
init_colors ( void )
@ -45,6 +46,8 @@ init_colors ( void )
velocity_colors[i] = fl_rgb_color( 23, 255 - i * 2, 32 );
}
Timeline timeline;
int
main ( int argc, char **argv )
{
@ -53,7 +56,7 @@ main ( int argc, char **argv )
Fl_Double_Window *main_window = new Fl_Double_Window( 0, 0, 800, 600 );
Fl_Scroll *scroll = new Fl_Scroll( 0, 0, 800, 600 );
timeline.scroll = new Fl_Scroll( 0, 0, 800, 600 );
Fl_Pack *tracks = new Fl_Pack( 0, 0, 5000, 5000 );
tracks->type( Fl_Pack::VERTICAL );
@ -117,7 +120,7 @@ main ( int argc, char **argv )
track2->prev( track1 );
tracks->end();
scroll->end();
timeline.scroll->end();
main_window->end();
main_window->show();