Chris@195: /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
Chris@195: 
Chris@195: /*
Chris@195:     Sonic Visualiser
Chris@195:     An audio file viewer and annotation editor.
Chris@195:     Centre for Digital Music, Queen Mary, University of London.
Chris@195:     This file copyright 2006-2007 Chris Cannam and QMUL.
Chris@195:    
Chris@195:     This program is free software; you can redistribute it and/or
Chris@195:     modify it under the terms of the GNU General Public License as
Chris@195:     published by the Free Software Foundation; either version 2 of the
Chris@195:     License, or (at your option) any later version.  See the file
Chris@195:     COPYING included with this distribution for more information.
Chris@195: */
Chris@195: 
Chris@1228: #ifndef SV_PAINT_ASSISTANT_H
Chris@1228: #define SV_PAINT_ASSISTANT_H
Chris@195: 
Chris@195: #include <QRect>
Chris@1228: #include <QPen>
Chris@195: #include <vector>
Chris@195: 
Chris@195: class QPainter;
Chris@1078: class Layer;
Chris@1078: class LayerGeometryProvider;
Chris@195: 
Chris@195: class PaintAssistant
Chris@195: {
Chris@195: public:
Chris@195:     enum Scale { LinearScale, MeterScale, dBScale };
Chris@195: 
Chris@195:     static void paintVerticalLevelScale(QPainter &p, QRect rect,
Chris@905:                                         double minVal, double maxVal,
Chris@220:                                         Scale scale, int &multRtn,
Chris@195:                                         std::vector<int> *markCoordRtns = 0);
Chris@195: 
Chris@905:     static int getYForValue(Scale scale, double value,
Chris@905:                             double minVal, double maxVal,
Chris@195:                             int minY, int height);
Chris@1078: 
Chris@1078:     enum TextStyle {
Chris@1266:         BoxedText,
Chris@1266:         OutlinedText,
Chris@1078:         OutlinedItalicText
Chris@1078:     };
Chris@1078: 
Chris@1078:     static void drawVisibleText(const LayerGeometryProvider *,
Chris@1078:                                 QPainter &p, int x, int y,
Chris@1078:                                 QString text, TextStyle style);
Chris@1228: 
Chris@1228:     /**
Chris@1373:      * Scale up a size in pixels for a hi-dpi display without pixel
Chris@1373:      * doubling. This is like ViewManager::scalePixelSize, but taking
Chris@1373:      * and returning floating-point values rather than integer
Chris@1373:      * pixels. It is also a little more conservative - it never
Chris@1373:      * shrinks the size, it can only increase or leave it unchanged.
Chris@1373:      */
Chris@1373:     static double scaleSize(double size);
Chris@1373: 
Chris@1373:     /**
Chris@1228:      * Scale up pen width for a hi-dpi display without pixel doubling.
Chris@1373:      * This is like scaleSize except that it also scales the
Chris@1373:      * zero-width case.
Chris@1228:      */
Chris@1228:     static double scalePenWidth(double width);
Chris@1228: 
Chris@1228:     /**
Chris@1228:      * Apply scalePenWidth to a pen.
Chris@1228:      */
Chris@1228:     static QPen scalePen(QPen pen);
Chris@195: };
Chris@195: 
Chris@195: #endif