X11Painter.cpp

// X11Painter.cpp
#include "X11Painter.h"

X11Painter::~X11Painter()
{

}

X11Painter::X11Painter()
{
    X11Painter(-1);
}

X11Painter::X11Painter(int screenno)
{
    this->some_test = 1234;
    printf("this->some_test=%i\n", this->some_test);

    char* display;
    int event_basep, error_basep;

    display = getenv("DISPLAY");
    if (!display)
    {
        throw DisplayUnknownException();
    }

    this->display = XOpenDisplay(display);
    if (!this->display)
    {
        throw NoDisplayException();
    }

    if (screenno == -1)
    {
        this->screen = XDefaultScreen(this->display);
    } else {
        this->screen = screenno;
    }
    printf("this->screen:%i\n",this->screen);

    Bool shapeExtensions = XShapeQueryExtension(this->display, &event_basep, &error_basep);
    if (!shapeExtensions)
    {
        throw ShapeExtensionException();
    }
    this->depth = XDefaultDepth(this->display, this->screen);
    this->visual = XDefaultVisual(this->display, this->screen);

    {
        this->screenwidth = XDisplayWidth(this->display, this->screen);
        this->screenheight = XDisplayHeight(this->display, this->screen);
        this->xpos = 0;
    }
    this->winattr.event_mask = NoEventMask;
    this->winattr.do_not_propagate_mask = NoEventMask;
    this->winattr.background_pixel = 0;
    this->window = XCreateWindow (
        this->display,
        XRootWindow(this->display, this->screen),
        0,  0,
        100,    100,
        0,
        this->depth,
        InputOutput,
        CopyFromParent,
        0, //CWBackPixel | CWBorderPixel | CWEventMask,
        &(this->winattr)
    );

    XStoreName(this->display, this->window, "LaserFinger");

    printf("1:: this->display='%p'; this->window='%lu'\n", this->display, (unsigned long)(this->window));
    printf("width: %i\n", this->screenwidth);
    printf("%p\n", this);

    printf("this->some_test=%i\n", this->some_test);
}

void X11Painter::show()
{
    printf("this->some_test=%i\n", this->some_test);
    XMapWindow(this->display, this->window);
}

void X11Painter::showAt(int x, int y)
{
    if (x < 0 || y < 0 || x > this->screenwidth || y > this->screenheight)
    {
        throw WrongPositionException();
    }
    this->show();
    XMoveWindow(this->display, this->window, x, y);
}

void X11Painter::hide()
{
    XUnmapWindow(this->display, this->window);
    this->hide();
}