#include <QtGui>

#include "widget.h"

const int PANEL_HEIGHT = 30;

Widget::Widget(QWidget *parent)

: QFrame(parent), cur_width(0) {

setMinimumHeight(PANEL_HEIGHT);

}

void Widget::setValue(int value)

{

cur_width = value;

repaint();

}

void Widget::paintEvent(QPaintEvent *e) {

QPainter qp(this);

drawWidget(qp);

QFrame::paintEvent(e);

}

void Widget::drawWidget(QPainter &qp) {

QString num[] = { "75", "150", "225", "300", "375", "450",

"525", "600", "675" };

int asize = sizeof(num)/sizeof(num[1]);

QColor redColor(255, 175, 175);

QColor yellowColor(255, 255, 184);

int width = size().width();

int step = (int) qRound((double)width / DIVISIONS);

int till = (int) ((width / MAX_CAPACITY) * cur_width);

int full = (int) ((width / MAX_CAPACITY) * FULL_CAPACITY);

if (cur_width >= FULL_CAPACITY) {

qp.setPen(yellowColor);

qp.setBrush(yellowColor);

qp.drawRect(0, 0, full, 30);

qp.setPen(redColor);

qp.setBrush(redColor);

qp.drawRect(full, 0, till-full, PANEL_HEIGHT);

} else if (till > 0) {

qp.setPen(yellowColor);

qp.setBrush(yellowColor);

qp.drawRect(0, 0, till, PANEL_HEIGHT);

}

QColor grayColor(90, 80, 60);

qp.setPen(grayColor);

for (int i=1; i <=asize; i++) {

qp.drawLine(i*step, 0, i*step, LINE_WIDTH);

QFont newFont = font();

newFont.setPointSize(8);

setFont(newFont);

QFontMetrics metrics(font());

int w = metrics.horizontalAdvance(num[i-1]);

qp.drawText(i*step-w/2, DISTANCE, num[i-1]);

}

}