mirror of
https://github.com/ElvishArtisan/rivendell.git
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Initial import of CVS-v2_8_branch
This commit is contained in:
Fred Gleason
853
lib/rdslider.cpp
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853
lib/rdslider.cpp
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@@ -0,0 +1,853 @@
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// rdslider.cpp
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//
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// An audio- and touchscreen-friendly slider widget.
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//
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// (C) Copyright 2009 Fred Gleason <fredg@paravelsystems.com>
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//
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// $Id: rdslider.cpp,v 1.5 2010/07/29 19:32:34 cvs Exp $
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//
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU Library General Public License
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// version 2 as published by the Free Software Foundation.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public
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// License along with this program; if not, write to the Free Software
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// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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//
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//
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#include <stdlib.h>
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#include <stdio.h>
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#include <qwidget.h>
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#include <qslider.h>
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#include <qpainter.h>
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#include <qcolor.h>
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#include <qpalette.h>
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#include <qsize.h>
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#include <qrect.h>
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#include <rdslider.h>
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#include <qpixmap.h>
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RDSlider::RDSlider(QWidget *parent=0,const char *name=0)
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: QWidget(parent,name),QRangeControl()
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{
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init(RDSlider::Right);
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update();
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}
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RDSlider::RDSlider(RDSlider::Orientation orient,QWidget *parent,const char *name)
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: QWidget(parent,name),QRangeControl()
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{
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init(orient);
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setOrientation(orient);
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}
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RDSlider::RDSlider(int minValue,int maxValue,int pageStep,int value,
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RDSlider::Orientation orient,QWidget *parent,const char *name)
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: QWidget(parent,name),QRangeControl()
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{
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init(orient);
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setOrientation(orient);
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setRange(minValue,maxValue);
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setPageStep(pageStep);
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setValue(value);
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}
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RDSlider::Orientation RDSlider::orientation() const
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{
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return rdslider_orient;
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}
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void RDSlider::setOrientation(RDSlider::Orientation orient)
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{
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rdslider_orient=orient;
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update();
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}
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void RDSlider::setTracking(bool enable)
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{
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tracking_enabled=enable;
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}
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bool RDSlider::tracking() const
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{
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return tracking_enabled;
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}
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void RDSlider::setTickInterval(int i)
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{
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tick_interval=i;
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update();
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}
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void RDSlider::setTickmarks(QSlider::TickSetting s)
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{
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tick_setting=s;
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update();
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}
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void RDSlider::setMinValue(int min_value)
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{
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setRange(min_value,maxValue());
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}
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void RDSlider::setMaxValue(int max_value)
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{
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setRange(minValue(),max_value);
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}
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void RDSlider::setRange(int min_value,int max_value)
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{
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QRangeControl::setRange(min_value,max_value);
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calcKnob();
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update(prev_knob);
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update(curr_knob);
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}
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void RDSlider::setLineStep(int step)
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{
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line_step=step;
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}
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void RDSlider::setPageStep(int step)
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{
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page_step=step;
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}
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void RDSlider::setKnobColor(QColorGroup group)
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{
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knob_color=group;
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calcKnob();
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update();
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}
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void RDSlider::setKnobColor(QColor color)
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{
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knob_color.setColor(QColorGroup::Background,color);
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calcKnob();
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update();
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}
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void RDSlider::setKnobSize(QSize size)
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{
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if(size!=curr_knob.size()) {
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knob_size=size;
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calcKnob();
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}
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}
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void RDSlider::setKnobSize(int w,int h)
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{
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setKnobSize(QSize(w,h));
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}
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void RDSlider::setGeometry(int x,int y,int w,int h)
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{
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calcKnob(x,y,w,h);
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QWidget::setGeometry(x,y,w,h);
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}
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void RDSlider::setGeometry(QRect &rect)
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{
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setGeometry(rect.left(),rect.top(),rect.width(),rect.height());
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}
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void RDSlider::setValue(int setting)
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{
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if(!rdslider_moving) {
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if(setting!=value()) {
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QRangeControl::setValue(setting);
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calcKnob();
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update(prev_knob);
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update(curr_knob);
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}
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}
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}
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void RDSlider::addStep()
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{
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setValue(value()+page_step);
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}
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void RDSlider::subtractStep()
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{
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setValue(value()-page_step);
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}
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void RDSlider::paintEvent(QPaintEvent *paintEvent)
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{
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QPainter *p=new QPainter(this);
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int tick_x,tick_y;
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if((rdslider_orient==RDSlider::Up)||(rdslider_orient==RDSlider::Down)) {
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//
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// The groove
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//
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p->setPen(QColor(colorGroup().dark()));
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p->moveTo(width()/2,knob_size.height()/2);
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p->lineTo(width()/2,height()-knob_size.height()/2);
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p->setPen(QColor(colorGroup().shadow()));
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p->moveTo(width()/2-1,height()-knob_size.height()/2+1);
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p->lineTo(width()/2-1,knob_size.height()/2-1);
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p->lineTo(width()/2+1,knob_size.height()/2-1);
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//
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// The ticks
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//
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switch(rdslider_orient) {
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case RDSlider::Up:
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if((tick_setting==QSlider::Left)||(tick_setting==QSlider::Both)) {
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p->setPen(colorGroup().shadow());
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for(int i=minValue();i<=maxValue();i+=tick_interval) {
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tick_y=(geometry().height()-curr_knob.height())-
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((geometry().height()-curr_knob.height())*(i-minValue()))/
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(maxValue()-minValue())+curr_knob.height()/2;
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p->moveTo(0,tick_y);
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p->lineTo(width()/2-2,tick_y);
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}
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}
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if((tick_setting==QSlider::Right)||(tick_setting==QSlider::Both)) {
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p->setPen(colorGroup().shadow());
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for(int i=minValue();i<=maxValue();i+=tick_interval) {
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tick_y=(geometry().height()-curr_knob.height())-
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((geometry().height()-curr_knob.height())*(i-minValue()))/
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(maxValue()-minValue())+curr_knob.height()/2;
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p->moveTo(width()/2+2,tick_y);
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p->lineTo(width(),tick_y);
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}
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}
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break;
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case RDSlider::Down:
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if((tick_setting==QSlider::Left)||(tick_setting==QSlider::Both)) {
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p->setPen(colorGroup().shadow());
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for(int i=minValue();i<=maxValue();i+=tick_interval) {
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tick_y=(geometry().height()-curr_knob.height()/2)-
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abs((geometry().height()-curr_knob.height())*i)/
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(maxValue()-minValue());
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p->moveTo(0,tick_y);
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p->lineTo(width()/2-2,tick_y);
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}
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}
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if((tick_setting==QSlider::Right)||(tick_setting==QSlider::Both)) {
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p->setPen(colorGroup().shadow());
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for(int i=minValue();i<=maxValue();i+=tick_interval) {
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tick_y=(geometry().height()-curr_knob.height()/2)-
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abs((geometry().height()-curr_knob.height())*i)/
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(maxValue()-minValue());
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p->moveTo(width()/2+2,tick_y);
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p->lineTo(width(),tick_y);
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}
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}
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break;
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default:
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break;
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}
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}
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if((rdslider_orient==RDSlider::Left)||(rdslider_orient==RDSlider::Right)) {
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//
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// The groove
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//
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p->setPen(QColor(colorGroup().light()));
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p->moveTo(knob_size.width()/2,height()/2+1);
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p->lineTo(width()-knob_size.width()/2,height()/2+1);
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p->setPen(QColor(colorGroup().dark()));
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p->moveTo(knob_size.width()/2,height()/2);
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p->lineTo(width()-knob_size.width()/2,height()/2);
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p->setPen(QColor(colorGroup().shadow()));
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p->moveTo(width()-knob_size.width()/2+1,height()/2-1);
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p->lineTo(knob_size.width()/2-1,height()/2-1);
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//
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// The ticks
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//
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switch(rdslider_orient) {
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case RDSlider::Left:
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if((tick_setting==QSlider::Above)||(tick_setting==QSlider::Both)) {
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p->setPen(colorGroup().shadow());
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for(int i=minValue();i<=maxValue();i+=tick_interval) {
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tick_x=(geometry().width()-curr_knob.width())-
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((geometry().width()-curr_knob.width())*(i-minValue()))/
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(maxValue()-minValue())+curr_knob.width()/2;
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p->moveTo(tick_x,0);
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p->lineTo(tick_x,height()/2-2);
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}
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}
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if((tick_setting==QSlider::Below)||(tick_setting==QSlider::Both)) {
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p->setPen(colorGroup().shadow());
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for(int i=minValue();i<=maxValue();i+=tick_interval) {
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tick_x=(geometry().width()-curr_knob.width())-
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((geometry().width()-curr_knob.width())*(i-minValue()))/
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(maxValue()-minValue())+curr_knob.width()/2;
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p->moveTo(tick_x,height()/2+2);
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p->lineTo(tick_x,height());
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}
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}
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break;
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case RDSlider::Right:
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if((tick_setting==QSlider::Above)||(tick_setting==QSlider::Both)) {
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p->setPen(colorGroup().shadow());
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for(int i=minValue();i<=maxValue();i+=tick_interval) {
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tick_x=(geometry().width()-curr_knob.width()/2)-
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abs((geometry().width()-curr_knob.width())*i)/
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(maxValue()-minValue());
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p->moveTo(tick_x,0);
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p->lineTo(tick_x,height()/2-2);
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}
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}
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if((tick_setting==QSlider::Below)||(tick_setting==QSlider::Both)) {
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p->setPen(colorGroup().shadow());
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for(int i=minValue();i<=maxValue();i+=tick_interval) {
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tick_x=(geometry().width()-curr_knob.width()/2)-
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abs((geometry().width()-curr_knob.width())*i)/
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(maxValue()-minValue());
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p->moveTo(tick_x,height()/2+2);
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p->lineTo(tick_x,height());
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}
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}
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break;
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default:
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break;
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}
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}
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//
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// The knob
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//
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p->drawPixmap(curr_knob.x(),curr_knob.y(),*knob_map);
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p->end();
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}
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void RDSlider::mouseMoveEvent(QMouseEvent *mouse)
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{
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int curr_x,curr_y;
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int knob_value;
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if(rdslider_moving) {
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prev_knob=curr_knob;
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if((rdslider_orient==RDSlider::Up)||(rdslider_orient==RDSlider::Down)) {
|
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if(mouse->y()<0) {
|
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curr_knob=QRect(curr_knob.x(),0,curr_knob.width(),curr_knob.height());
|
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if(prev_knob!=curr_knob) {
|
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switch(rdslider_orient) {
|
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case RDSlider::Up:
|
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if(value()!=maxValue()) {
|
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QRangeControl::setValue(maxValue());
|
||||
if(tracking_enabled) {
|
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emit valueChanged(value());
|
||||
}
|
||||
else {
|
||||
deferred_change=true;
|
||||
}
|
||||
}
|
||||
break;
|
||||
case RDSlider::Down:
|
||||
if(value()!=minValue()) {
|
||||
QRangeControl::setValue(minValue());
|
||||
if(tracking_enabled) {
|
||||
emit valueChanged(value());
|
||||
}
|
||||
else {
|
||||
deferred_change=true;
|
||||
}
|
||||
}
|
||||
break;
|
||||
|
||||
default:
|
||||
break;
|
||||
}
|
||||
emit sliderMoved(value());
|
||||
update(prev_knob);
|
||||
update(curr_knob);
|
||||
}
|
||||
return;
|
||||
}
|
||||
if(mouse->y()>geometry().height()) {
|
||||
curr_knob=QRect(curr_knob.x(),height()-curr_knob.height(),
|
||||
curr_knob.width(),curr_knob.height());
|
||||
if(prev_knob!=curr_knob) {
|
||||
switch(rdslider_orient) {
|
||||
case RDSlider::Up:
|
||||
if(value()!=minValue()) {
|
||||
QRangeControl::setValue(minValue());
|
||||
if(tracking_enabled) {
|
||||
emit valueChanged(value());
|
||||
}
|
||||
else {
|
||||
deferred_change=true;
|
||||
}
|
||||
}
|
||||
break;
|
||||
case RDSlider::Down:
|
||||
if(value()!=maxValue()) {
|
||||
QRangeControl::setValue(maxValue());
|
||||
if(tracking_enabled) {
|
||||
emit valueChanged(value());
|
||||
}
|
||||
else {
|
||||
deferred_change=true;
|
||||
}
|
||||
}
|
||||
break;
|
||||
|
||||
default:
|
||||
break;
|
||||
}
|
||||
emit sliderMoved(value());
|
||||
update(prev_knob);
|
||||
update(curr_knob);
|
||||
}
|
||||
return;
|
||||
}
|
||||
curr_y=curr_knob.y()-base_y+mouse->y();
|
||||
if(curr_y<0) {
|
||||
curr_y=0;
|
||||
}
|
||||
if(curr_y>(height()-curr_knob.height())) {
|
||||
curr_y=height()-curr_knob.height();
|
||||
}
|
||||
curr_knob=QRect(curr_knob.x(),curr_y,
|
||||
curr_knob.width(),curr_knob.height());
|
||||
base_y=mouse->y();
|
||||
switch(rdslider_orient) {
|
||||
case RDSlider::Up:
|
||||
knob_value=(maxValue()-minValue())*
|
||||
(geometry().height()-curr_knob.y()
|
||||
-curr_knob.height())/
|
||||
(geometry().height()-curr_knob.height())
|
||||
+minValue();
|
||||
if(value()!=knob_value) {
|
||||
QRangeControl::setValue(knob_value);
|
||||
if(tracking_enabled) {
|
||||
emit valueChanged(value());
|
||||
}
|
||||
else {
|
||||
deferred_change=true;
|
||||
}
|
||||
}
|
||||
break;
|
||||
case RDSlider::Down:
|
||||
knob_value=((minValue()-maxValue())*
|
||||
curr_knob.y()
|
||||
+curr_knob.height()-geometry().height())/
|
||||
(curr_knob.height()-geometry().height())
|
||||
+minValue();
|
||||
if(value()!=knob_value) {
|
||||
QRangeControl::setValue(knob_value);
|
||||
if(tracking_enabled) {
|
||||
emit valueChanged(value());
|
||||
}
|
||||
else {
|
||||
deferred_change=true;
|
||||
}
|
||||
}
|
||||
break;
|
||||
|
||||
default:
|
||||
break;
|
||||
}
|
||||
emit sliderMoved(value());
|
||||
update(prev_knob);
|
||||
update(curr_knob);
|
||||
}
|
||||
|
||||
if((rdslider_orient==RDSlider::Left)||(rdslider_orient==RDSlider::Right)) {
|
||||
if(mouse->x()<0) {
|
||||
curr_knob=QRect(0,curr_knob.y(),curr_knob.width(),curr_knob.height());
|
||||
if(prev_knob!=curr_knob) {
|
||||
switch(rdslider_orient) {
|
||||
case RDSlider::Left:
|
||||
if(value()!=maxValue()) {
|
||||
QRangeControl::setValue(maxValue());
|
||||
if(tracking_enabled) {
|
||||
emit valueChanged(value());
|
||||
}
|
||||
else {
|
||||
deferred_change=true;
|
||||
}
|
||||
}
|
||||
break;
|
||||
case RDSlider::Right:
|
||||
if(value()!=minValue()) {
|
||||
QRangeControl::setValue(minValue());
|
||||
if(tracking_enabled) {
|
||||
emit valueChanged(value());
|
||||
}
|
||||
else {
|
||||
deferred_change=true;
|
||||
}
|
||||
}
|
||||
break;
|
||||
|
||||
default:
|
||||
break;
|
||||
}
|
||||
emit sliderMoved(value());
|
||||
update(prev_knob);
|
||||
update(curr_knob);
|
||||
}
|
||||
return;
|
||||
}
|
||||
if(mouse->x()>geometry().width()) {
|
||||
curr_knob=QRect(width()-curr_knob.width(),curr_knob.y(),
|
||||
curr_knob.width(),curr_knob.height());
|
||||
if(prev_knob!=curr_knob) {
|
||||
switch(rdslider_orient) {
|
||||
case RDSlider::Left:
|
||||
if(value()!=minValue()) {
|
||||
QRangeControl::setValue(minValue());
|
||||
if(tracking_enabled) {
|
||||
emit valueChanged(value());
|
||||
}
|
||||
else {
|
||||
deferred_change=true;
|
||||
}
|
||||
}
|
||||
break;
|
||||
case RDSlider::Right:
|
||||
if(value()!=maxValue()) {
|
||||
QRangeControl::setValue(maxValue());
|
||||
if(tracking_enabled) {
|
||||
emit valueChanged(value());
|
||||
}
|
||||
else {
|
||||
deferred_change=true;
|
||||
}
|
||||
}
|
||||
break;
|
||||
|
||||
default:
|
||||
break;
|
||||
}
|
||||
emit sliderMoved(value());
|
||||
update(prev_knob);
|
||||
update(curr_knob);
|
||||
}
|
||||
return;
|
||||
}
|
||||
curr_x=curr_knob.x()-base_x+mouse->x();
|
||||
if(curr_x<0) {
|
||||
curr_x=0;
|
||||
}
|
||||
if(curr_x>(width()-curr_knob.width())) {
|
||||
curr_x=width()-curr_knob.width();
|
||||
}
|
||||
curr_knob=QRect(curr_x,curr_knob.y(),
|
||||
curr_knob.width(),curr_knob.height());
|
||||
base_x=mouse->x();
|
||||
switch(rdslider_orient) {
|
||||
case RDSlider::Left:
|
||||
knob_value=(maxValue()-minValue())*
|
||||
(geometry().width()-curr_knob.x()
|
||||
-curr_knob.width())/
|
||||
(geometry().width()-curr_knob.width())
|
||||
+minValue();
|
||||
if(value()!=knob_value) {
|
||||
QRangeControl::setValue(knob_value);
|
||||
if(tracking_enabled) {
|
||||
emit valueChanged(value());
|
||||
}
|
||||
else {
|
||||
deferred_change=true;
|
||||
}
|
||||
}
|
||||
break;
|
||||
case RDSlider::Right:
|
||||
knob_value=((minValue()-maxValue())*curr_knob.x()
|
||||
+curr_knob.width()-geometry().width())/
|
||||
(curr_knob.width()-geometry().width())
|
||||
+minValue();
|
||||
if(value()!=knob_value) {
|
||||
QRangeControl::setValue(knob_value);
|
||||
if(tracking_enabled) {
|
||||
emit valueChanged(value());
|
||||
}
|
||||
else {
|
||||
deferred_change=true;
|
||||
}
|
||||
}
|
||||
break;
|
||||
|
||||
default:
|
||||
break;
|
||||
}
|
||||
emit sliderMoved(value());
|
||||
update(prev_knob);
|
||||
update(curr_knob);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
void RDSlider::mousePressEvent(QMouseEvent *mouse)
|
||||
{
|
||||
if(mouse->button()==QMouseEvent::LeftButton) {
|
||||
if(curr_knob.contains(mouse->x(),mouse->y())) {
|
||||
base_x=mouse->x();
|
||||
base_y=mouse->y();
|
||||
rdslider_moving=true;
|
||||
emit sliderPressed();
|
||||
return;
|
||||
}
|
||||
if(page_up.contains(mouse->x(),mouse->y())) {
|
||||
addStep();
|
||||
return;
|
||||
}
|
||||
if(page_down.contains(mouse->x(),mouse->y())) {
|
||||
subtractStep();
|
||||
}
|
||||
}
|
||||
else {
|
||||
QWidget::mousePressEvent(mouse);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
void RDSlider::mouseReleaseEvent(QMouseEvent *mouse)
|
||||
{
|
||||
if(mouse->button()==QMouseEvent::LeftButton) {
|
||||
rdslider_moving=false;
|
||||
if(deferred_change) {
|
||||
emit valueChanged(value());
|
||||
deferred_change=false;
|
||||
}
|
||||
emit sliderReleased();
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
void RDSlider::init(RDSlider::Orientation orient)
|
||||
{
|
||||
rdslider_orient=orient;
|
||||
knob_map=NULL;
|
||||
knob_color=colorGroup();
|
||||
rdslider_moving=false;
|
||||
page_step=10;
|
||||
line_step=1;
|
||||
tracking_enabled=true;
|
||||
deferred_change=false;
|
||||
tick_interval=10;
|
||||
tick_setting=QSlider::NoMarks;
|
||||
setRange(0,100);
|
||||
knob_size=QSize(geometry().width(),10);
|
||||
}
|
||||
|
||||
|
||||
void RDSlider::calcKnob()
|
||||
{
|
||||
calcKnob(geometry().x(),geometry().y(),
|
||||
geometry().width(),geometry().height());
|
||||
}
|
||||
|
||||
|
||||
void RDSlider::calcKnob(int x,int y,int w,int h)
|
||||
{
|
||||
int knob_x=0;
|
||||
int knob_y=0;
|
||||
int knob_w=0;
|
||||
int knob_h=0;
|
||||
QPainter p;
|
||||
|
||||
if((rdslider_orient==RDSlider::Up)||(rdslider_orient==RDSlider::Down)) {
|
||||
//
|
||||
// The knob itself
|
||||
//
|
||||
knob_w=knob_size.width();
|
||||
knob_h=knob_size.height();
|
||||
knob_x=w/2-knob_w/2;
|
||||
switch(rdslider_orient) {
|
||||
case RDSlider::Up:
|
||||
knob_y=(h-knob_h)-((h-knob_h)*(value()-minValue()))/
|
||||
(maxValue()-minValue());
|
||||
break;
|
||||
case RDSlider::Down:
|
||||
knob_y=-(h-knob_h-((h-knob_h)*(value()-minValue())))/
|
||||
(maxValue()-minValue());
|
||||
break;
|
||||
|
||||
default:
|
||||
break;
|
||||
}
|
||||
prev_knob=curr_knob;
|
||||
if((knob_w>0)&&(knob_h>0)) {
|
||||
curr_knob=QRect(knob_x,knob_y,knob_w,knob_h);
|
||||
}
|
||||
else {
|
||||
curr_knob=QRect(knob_x,knob_y,1,1);
|
||||
}
|
||||
if(prev_knob!=curr_knob) {
|
||||
emit sliderMoved(value());
|
||||
}
|
||||
|
||||
//
|
||||
// The PageUp/PageDown areas
|
||||
//
|
||||
if(rdslider_orient==RDSlider::Up) {
|
||||
page_up=QRect(knob_x,0,knob_w,knob_y);
|
||||
page_down=QRect(knob_x,knob_y+knob_h,knob_w,height()-(knob_y+knob_h));
|
||||
}
|
||||
if(rdslider_orient==RDSlider::Down) {
|
||||
page_down=QRect(knob_x,0,knob_w,knob_y);
|
||||
page_up=QRect(knob_x,knob_y+knob_h,knob_w,height()-(knob_y+knob_h));
|
||||
}
|
||||
|
||||
//
|
||||
// The knob cap
|
||||
//
|
||||
if(knob_map!=NULL) {
|
||||
delete knob_map;
|
||||
}
|
||||
knob_map=new QPixmap(curr_knob.size());
|
||||
knob_map->fill(knob_color.background());
|
||||
p.begin(knob_map);
|
||||
|
||||
//
|
||||
// The outline
|
||||
//
|
||||
p.setPen(knob_color.light());
|
||||
p.moveTo(0,curr_knob.height()-1);
|
||||
p.lineTo(0,0);
|
||||
p.lineTo(curr_knob.width()-1,0);
|
||||
p.moveTo(1,curr_knob.height()-1);
|
||||
p.lineTo(1,1);
|
||||
p.lineTo(curr_knob.width()-1,1);
|
||||
p.setPen(knob_color.dark());
|
||||
p.lineTo(curr_knob.width()-1,curr_knob.height()-1);
|
||||
p.lineTo(0,curr_knob.height()-1);
|
||||
p.moveTo(curr_knob.width()-2,1);
|
||||
p.lineTo(curr_knob.width()-2,curr_knob.height()-2);
|
||||
p.lineTo(0,curr_knob.height()-2);
|
||||
|
||||
//
|
||||
// The centerline
|
||||
//
|
||||
if(curr_knob.height()>=40) {
|
||||
p.setPen(knob_color.dark());
|
||||
p.moveTo(2,curr_knob.height()/2);
|
||||
p.lineTo(curr_knob.width()-2,curr_knob.height()/2);
|
||||
p.setPen(knob_color.shadow());
|
||||
p.moveTo(2,curr_knob.height()/2-1);
|
||||
p.lineTo(curr_knob.width()-2,curr_knob.height()/2-1);
|
||||
p.setPen(knob_color.light());
|
||||
p.moveTo(2,curr_knob.height()/2+1);
|
||||
p.lineTo(curr_knob.width()-2,curr_knob.height()/2+1);
|
||||
}
|
||||
p.end();
|
||||
}
|
||||
if((rdslider_orient==RDSlider::Left)||(rdslider_orient==RDSlider::Right)) {
|
||||
//
|
||||
// The knob itself
|
||||
//
|
||||
knob_w=knob_size.width();
|
||||
knob_h=knob_size.height();
|
||||
knob_y=h/2-knob_h/2;
|
||||
switch(rdslider_orient) {
|
||||
case RDSlider::Left:
|
||||
knob_x=(w-knob_w)-((w-knob_w)*(value()-minValue()))/
|
||||
(maxValue()-minValue());
|
||||
break;
|
||||
case RDSlider::Right:
|
||||
knob_x=-(w-knob_w-((w-knob_w)*(value()-minValue())))/
|
||||
(maxValue()-minValue());
|
||||
break;
|
||||
|
||||
default:
|
||||
break;
|
||||
}
|
||||
prev_knob=curr_knob;
|
||||
if((knob_w>0)&&(knob_h>0)) {
|
||||
curr_knob=QRect(knob_x,knob_y,knob_w,knob_h);
|
||||
}
|
||||
else {
|
||||
curr_knob=QRect(knob_x,knob_y,1,1);
|
||||
}
|
||||
|
||||
//
|
||||
// The PageUp/PageDown areas
|
||||
//
|
||||
if(rdslider_orient==RDSlider::Right) {
|
||||
page_up=QRect(knob_x+knob_w,knob_y,x+w,knob_h);
|
||||
page_down=QRect(0,knob_y,knob_x,knob_y+knob_h);
|
||||
}
|
||||
if(rdslider_orient==RDSlider::Left) {
|
||||
page_down=QRect(knob_x+knob_w,knob_y,x+w,knob_h);
|
||||
page_up=QRect(0,knob_y,knob_x,knob_y+knob_h);
|
||||
}
|
||||
|
||||
//
|
||||
// The knob cap
|
||||
//
|
||||
if(knob_map!=NULL) {
|
||||
delete knob_map;
|
||||
}
|
||||
knob_map=new QPixmap(curr_knob.size());
|
||||
knob_map->fill(knob_color.background());
|
||||
p.begin(knob_map);
|
||||
|
||||
//
|
||||
// The outline
|
||||
//
|
||||
p.setPen(knob_color.light());
|
||||
p.moveTo(0,curr_knob.height()-1);
|
||||
p.lineTo(0,0);
|
||||
p.lineTo(curr_knob.width()-1,0);
|
||||
p.moveTo(1,curr_knob.height()-1);
|
||||
p.lineTo(1,1);
|
||||
p.lineTo(curr_knob.width()-1,1);
|
||||
p.setPen(knob_color.dark());
|
||||
p.lineTo(curr_knob.width()-1,curr_knob.height()-1);
|
||||
p.lineTo(0,curr_knob.height()-1);
|
||||
p.moveTo(curr_knob.width()-2,1);
|
||||
p.lineTo(curr_knob.width()-2,curr_knob.height()-2);
|
||||
p.lineTo(0,curr_knob.height()-2);
|
||||
|
||||
//
|
||||
// The centerline
|
||||
//
|
||||
if(curr_knob.width()>=40) {
|
||||
p.setPen(knob_color.dark());
|
||||
p.moveTo(curr_knob.width()/2,2);
|
||||
p.lineTo(curr_knob.width()/2,curr_knob.height()-2);
|
||||
p.setPen(knob_color.shadow());
|
||||
p.moveTo(curr_knob.width()/2-1,2);
|
||||
p.lineTo(curr_knob.width()/2-1,curr_knob.height()-2);
|
||||
p.setPen(knob_color.light());
|
||||
p.moveTo(curr_knob.width()/2+1,2);
|
||||
p.lineTo(curr_knob.width()/2+1,curr_knob.height()-2);
|
||||
}
|
||||
p.end();
|
||||
}
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user