Sample Code 118: How to have a Screen Ruler - Part 2 - with mouse position displayed? |
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Written by kksou
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Thursday, 14 December 2006 |
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Problem You have set up a basic screen ruler in Part 1. Now you would like to have the exact mouse position displayed in the title bar as shown below:
Solution
Sample Code 1
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| <?php
$window = new GtkWindow();
$window->connect_simple('destroy', array('Gtk','main_quit'));
$window->add($vbox = new GtkVBox());
$ruler = new GtkHRuler();
$ruler->set_range(0, 800, 100, 1024);
$ruler->set_size_request(800, 20);
$eventbox = new GtkEventBox(); // note 1
$eventbox->add($ruler);
$eventbox->connect('motion-notify-event', 'on_motion', $window); // note 2
$vbox->pack_start($eventbox, 0, 0);
$window->show_all();
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Explanation This example makes use of the code in Part 1.
What's new here:
- Create an eventbox and stuff the ruler inside.
- Call the callback function
on_motion every time the user moves the mouse.
- Write the mouse position in the window's title bar.
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