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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/***************************************************************************
* canvaswidget.cc
*
* Fri Aug 1 19:31:32 CEST 2014
* Copyright 2014 Bent Bisballe Nyeng
* deva@aasimon.org
****************************************************************************/
/*
* This file is part of DrumGizmo.
*
* DrumGizmo 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.
*
* DrumGizmo 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 DrumGizmo; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*/
#include "canvaswidget.h"
#include <QGridLayout>
#define MAXVAL 10000000L
#define SINGLESTEP MAXVAL/10
#define PAGESTEP MAXVAL/1000
CanvasWidget::CanvasWidget(QWidget* parent)
{
QGridLayout* g = new QGridLayout(this);
canvas = new Canvas(this);
g->addWidget(canvas, 0, 0);
yoffset = new QScrollBar(Qt::Vertical);
yoffset->setRange(0, MAXVAL);
yoffset->setPageStep(PAGESTEP);
yoffset->setSingleStep(SINGLESTEP);
connect(yoffset, SIGNAL(valueChanged(int)), this, SLOT(setYOffset(int)));
g->addWidget(yoffset, 0, 1);
yscale = new ZoomSlider(Qt::Vertical);
yscale->setRange(0.5, 30);
yscale->setTickWidth(0.1);
connect(yscale, SIGNAL(valueChanged(float)), this, SLOT(setYScale(float)));
yscale->setValue(0.5);
setYScale(0.5);
g->addWidget(yscale, 0, 2);
xoffset = new QScrollBar(Qt::Horizontal);
xoffset->setRange(0, MAXVAL);
xoffset->setPageStep(PAGESTEP);
xoffset->setSingleStep(SINGLESTEP);
connect(xoffset, SIGNAL(valueChanged(int)), this, SLOT(setXOffset(int)));
g->addWidget(xoffset, 1, 0);
xscale = new ZoomSlider(Qt::Horizontal);
xscale->setRange(1, 0.0001);
xscale->setTickWidth(0.0001);
connect(xscale, SIGNAL(valueChanged(float)), this, SLOT(setXScale(float)));
g->addWidget(xscale, 2, 0);
setLayout(g);
}
void CanvasWidget::setXScale(float val)
{
canvas->setXScale(val);
xoffset->setSingleStep(std::max(val*val * SINGLESTEP, 1.0f));
xoffset->setPageStep(std::max(val*val * PAGESTEP, 1.0f));
}
void CanvasWidget::setYScale(float val)
{
canvas->setYScale(val);
}
void CanvasWidget::setXOffset(int of)
{
// range 0.0 - 1.0
float val = (float)of/(float)MAXVAL;
canvas->setXOffset(val);
}
void CanvasWidget::setYOffset(int of)
{
// range 0.0 - 1.0
float val = (float)(of * -1 + MAXVAL)/(float)MAXVAL;
canvas->setYOffset(val);
}
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