1 #include "ScaleThreePainter.h"

     2 #include <QtGui>

     3 

     4 namespace GVA {

     5 

     6 ScaleThreePainter::ScaleThreePainter(

     7       const QString &leftFilename,

     8       const QString &middleFilename,

     9       const QString &rightFilename)

    10         : m_leftFilename(leftFilename),

    11           m_middleFilename(middleFilename),

    12           m_rightFilename(rightFilename),

    13           m_leftPixmap(0),

    14           m_middlePixmap(0),

    15           m_rightPixmap(0),

    16           m_pixmapsLoaded(false)

    17 {

    18 }

    19 

    20 ScaleThreePainter::~ScaleThreePainter() {

    21     unloadPixmaps();

    22 }

    23 

    24 void ScaleThreePainter::loadPixmaps() {

    25     Q_ASSERT(!m_pixmapsLoaded);

    26     m_leftPixmap = new QPixmap(m_leftFilename);

    27     m_middlePixmap = new QPixmap(m_middleFilename);

    28     m_rightPixmap = new QPixmap(m_rightFilename);

    29     m_pixmapsLoaded = true;

    30 }

    31 

    32 void ScaleThreePainter::unloadPixmaps() {

    33     delete m_leftPixmap; m_leftPixmap = 0;

    34     delete m_middlePixmap; m_middlePixmap = 0;

    35     delete m_rightPixmap; m_rightPixmap = 0;

    36     m_pixmapsLoaded = false;

    37 }

    38 

    39 void ScaleThreePainter::paint(QPainter* painter, const QRect &rect, QWidget* widget) {

    40     Q_UNUSED(widget)

    41 

    42     if(!m_pixmapsLoaded)

    43         loadPixmaps();

    44 

    45     //    qDebug() << "ScaleThreePainter::paint: " << rect << qMin(m_middlePixmap->height(), rect.height());

    46 

    47     painter->save();

    48 

    49     // Draw left.

    50     if(m_leftPixmap->height() > rect.height())

    51         painter->drawPixmap(0, 0, m_leftPixmap->width(), rect.height(), *m_leftPixmap);

    52     else

    53         painter->drawPixmap(0, 0, *m_leftPixmap);

    54 

    55     // Draw top middle -- fills in the space is between the left and right pixmaps.

    56     if(!m_middlePixmap->isNull()) {

    57         painter->drawTiledPixmap(m_leftPixmap->width(),

    58                                  0,

    59                                  rect.width() - (m_leftPixmap->width() + m_rightPixmap->width()),

    60                                  rect.height(),

    61                                  m_middlePixmap->scaledToHeight(rect.height()));

    62     }

    63 

    64     // Draw right.

    65     if(m_rightPixmap->height() > rect.height())

    66         painter->drawPixmap(rect.right() - m_rightPixmap->width() + 1, 0, m_rightPixmap->width(), rect.height(), *m_rightPixmap);

    67     else

    68         painter->drawPixmap(rect.right() - m_rightPixmap->width() + 1, 0, *m_rightPixmap);

    69 

    70     painter->restore();

    71 }

    72 

    73 

    74 }  // GVA namespace