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| <?php
$app = new App();
$app->go();
class App {
protected $window; // the window
protected $view; // the treeview
function __construct() {
$window = new GtkWindow();
global $argv;
$window->set_title($argv[0]);
$window->set_size_request(400, 240);
$window->connect_simple('destroy', array('Gtk','main_quit'));
$window->add($vbox = new GtkVBox());
$this->window = $window;
// display title
$title = new GtkLabel("Interactive search in GtkTreeView for PHP-GTK v2.0\n".
" Part 2 - OOP version");
$title->modify_font(new PangoFontDescription("Times New Roman Italic 10"));
$title->modify_fg(Gtk::STATE_NORMAL, GdkColor::parse("#0000ff"));
$title->set_size_request(-1, 40);
$vbox->pack_start($title, 0, 0);
$vbox->pack_start(new GtkLabel(), 0);
$vbox->pack_start(new GtkLabel('Press Ctrl-F to activate interactive search'), 0);
$vbox->pack_start(new GtkLabel('Note: Search column is the Qty column'), 0);
// the 2D table
$data = array(
array('row0', 'item 42', 2, 3.1),
array('row1', 'item 36', 20, 6.21),
array('row2', 'item 21', 8, 9.36),
array('row3', 'item 10', 11, 12.4),
array('row4', 'item 7', 41, 15.5),
array('row5', 'item 4', 72, 18.6),
array('row6', 'item 3', 93, 21.73));
$view = new TreeView($window, $vbox, $data);
}
public function go() {
$this->window->show_all();
Gtk::main();
}
}
class TreeView extends GtkTreeView {
var $parent_window; // parent window
var $search_app = null; // the interactive search application
function __construct($parent_window, $vbox, $data) {
$this->parent_window = $parent_window;
// Set up a scroll window
$scrolled_win = new GtkScrolledWindow();
$scrolled_win->set_policy( Gtk::POLICY_AUTOMATIC,
Gtk::POLICY_AUTOMATIC);
$vbox->pack_start($scrolled_win);
// Creates the list store
if (defined("GObject::TYPE_STRING")) {
$model = new GtkListStore(GObject::TYPE_STRING, GObject::TYPE_STRING,
GObject::TYPE_LONG, GObject::TYPE_DOUBLE);
} else {
$model = new GtkListStore(Gtk::TYPE_STRING, Gtk::TYPE_STRING,
Gtk::TYPE_LONG, Gtk::TYPE_DOUBLE);
}
$field_header = array('Row #', 'Description', 'Qty', 'Price');
$field_justification = array(0.0, 0.0, 0.5, 1.0);
// Creates the view to display the list store
parent::__construct($model);
$scrolled_win->add($this);
// Creates the columns
for ($col=0; $col<count($field_header); ++$col) {
$cell_renderer = new GtkCellRendererText();
$cell_renderer->set_property("xalign", $field_justification[$col]);
$column = new GtkTreeViewColumn($field_header[$col],
$cell_renderer, 'text', $col);
$column->set_alignment($field_justification[$col]);
$column->set_sort_column_id($col);
// set the header font and color
$label = new GtkLabel($field_header[$col]);
$label->modify_font(new PangoFontDescription("Arial Bold"));
$label->modify_fg(Gtk::STATE_NORMAL, GdkColor::parse("#0000FF"));
$column->set_widget($label);
$label->show();
// setup self-defined function to display alternate row color
$column->set_cell_data_func($cell_renderer, array($this, "format_col"), $col);
$this->append_column($column);
}
// pupulates the data
for ($row=0; $row<count($data); ++$row) {
$values = array();
for ($col=0; $col<count($data[$row]); ++$col) {
$values[] = $data[$row][$col];
}
$model->append($values);
}
$selection = $this->get_selection();
$selection->connect('changed', array($this, 'on_selection'));
$this->set_enable_search(false);
$this->connect('start-interactive-search', array($this, 'on_search_start'));
$this->connect('button-press-event', array($this, 'on_buttonpress'));
}
// self-defined function to format the price column
function format_col($column, $cell, $model, $iter, $col_num) {
$path = $model->get_path($iter); // get the current path
$row_num = $path[0]; // get the row number
if ($col_num==3) {
$amt = $model->get_value($iter, 3);
$cell->set_property('text', '$'.number_format($amt,2));
}
$row_color = ($row_num%2==1) ? '#dddddd' : '#ffffff';
$cell->set_property('cell-background', $row_color);
}
// the function that is called when user selects a row
function on_selection($selection) {
list($model, $iter) = $selection->get_selected();
if ($iter==null) return;
$desc = $model->get_value($iter, 1);
$qty = $model->get_value($iter, 2);
$price = $model->get_value($iter, 3);
print "You have selected $desc: $qty ($price)\n";
}
function on_search_start($view) {
if ($this->search_app==null || !$this->search_app->searchbox_on) {
$this->search_app = new Interactive_Search($this->parent_window, $this);
}
}
function on_buttonpress($view, $event) {
if ($this->search_app!=null) {
$this->search_app->destroy_searchwin();
$this->search_app = null;
}
}
}
class Interactive_Search extends GtkWindow {
public $searchbox_on = 0;
protected $parent_window; // parent window
protected $treeview; // the tree view
protected $search_win; // the search window
function __construct($parent_window, $treeview) {
|
3.0 (from 1 user) 
September 07, 2008 5:31am
A few points:
Rather than creating the window and the search entry each time it is needed, I would do this only once and store them as properties of my custom GtkTreeView class. When I'm done, I just hide the window. Next time I need it, all I have to do is call show_all() on the window.
...
if (is_null($this->searchwindow)) {
// create searchwindow
}
else {
$this->searchwindow->show_all();
}
...
To position the search window, I'd figure out the position of the lower left corner of the treeview widget, and then simply use set_uposition(x,y) - it's less code and more straightforward.
...
$ppos = $this->get_parent_window()->get_position();
$wpos = $this->get_allocation();
$xpos = $ppos[0] + $wpos->x;
$ypos = $ppos[1] + $wpos->y + $wpos->height;
$this->searchwindow->set_uposition($xpos,$ypos);
...