tools/templates/pixlabel.cpp
author koda
Mon, 17 Jun 2013 17:40:01 +0200
changeset 9234 2bf3796c5855
parent 8442 535a00ca0d35
permissions -rw-r--r--
This commit changes many aspect of our cmake build system - shared libraries are compiled by default: * this modifies RPATH of unix executables; * this will prevent a lot of linking issues, esp. from pascal world; * the old behaviour (static libs) is still available with -DBUILD_SHARED_LIBS=off; * of course in this case you have to provide the full list of dependencies with FPFLAGS and CMAKE_C_FLAGS; - pascal is now fully integrated with cmake, meaning you can just do add_sources and use CMAKE_Pascal_FLAGS: * some of the language features are only partially implemented, for example .inc files will not get rebuilt if you modify them; * target_link_libraries for pascal targets is just dummy as linking is determined within pascal files; * universal builds for osx are not available any more; - bundled libraries and system libraries are addressed using the target name: * this avoids depedency tracking; * this allows to name output as we wish.

#include <QPainter>
#include <QPen>
#include "pixlabel.h"

PixLabel::PixLabel()
        : QLabel(0)
{

}

void PixLabel::paintEvent(QPaintEvent * event)
{
    QLabel::paintEvent(event);
    QPainter p(this);

    p.fillRect(QRect(0, 0, 1024, 512), QBrush(Qt::black));

    if (rects.size())
    {
        p.setPen(QPen(Qt::lightGray));
        QVector<QPoint> centers;
        for(QList<QRect>::const_iterator it = rects.begin(); it != rects.end(); ++it)
            centers.push_back((*it).center());
        p.drawPolyline(QPolygon(centers));

        p.setPen(QPen(Qt::white));
        p.drawRects(rects.toVector());

        p.setPen(QPen(Qt::yellow));
        p.drawRect(rects.last());
    }
}

void PixLabel::mousePressEvent(QMouseEvent * e)
{
    if (!rects.empty())
    {
        if (e->button() == Qt::LeftButton)
            rects[rects.size() - 1].moveTopLeft(QPoint(e->x(), e->y()));
        else
        if (e->button() == Qt::RightButton)
            rects[rects.size() - 1].setBottomRight(QPoint(e->x(), e->y()));
        repaint();
    }
}

void PixLabel::AddRect()
{
    rects.push_back(QRect(0, 0, 1, 1));
    repaint();
}