Re: Gtk problems with GNOME

[Matias Szeinfeld <matinger gmail com>]

Send main.c

2012/9/19 Matias Szeinfeld <matinger gmail com>:
> Hi, i have a problem using gtk_window_move with gnome. There are two
> windows, and a function to move one window (not decorated) respect to
> the other window (decorated) using gtk_window_move. The problem is the
> result. Because not always is the expected. Sometimes the window
> (undecorated) position is wrong. I want to know why.
>
> This situation appear first when i use gtkwebkit with the undecorated
> parent. Then i try without gtkwebkit, and usually works but not
> always. So try more times if you choose the option without gtkwebkit.
> The problem is show better if you attach a gtkwebkit to the not
> decorated window (uncomment code in the main.c).
>
> This program works in Ubuntu 12.04 with XFCE and not in Ubuntu 12.04 with gnome.
> Can someone help me please?
> I send you the main.c.
> Compile: gcc -o main main.c `pkg-config --cflags --libs gtk+-2.0 webkit-1.0`
>
> RealPos: http://imageshack.us/a/img404/861/realpos.png
> BadPos: http://imageshack.us/a/img840/5949/badpos.png
> BadPos2: http://imageshack.us/a/img705/3136/badpos2.png
> BadPosWithWebKit: http://imageshack.us/a/img441/4392/badposwithwebkit.png
> RealPosWithWebKit: http://imageshack.us/a/img528/4655/realposwithwebkit.png

#include <gtk/gtk.h>
#include <webkit/webkit.h>

typedef struct Size {
	int x;
	int y;
	int w;
	int h;
} Size;

void move(GtkWidget *videoOverlay,GtkWidget *_main, int x, int y){
	gint xOrigin,yOrigin,borderLeft,borderBottom;
	GdkRectangle fRect;

	GdkWindow *window = gtk_widget_get_window(_main); //	Getting window
	gdk_window_get_origin(window, &xOrigin,&yOrigin);  //	Parent's left-top screen coordinates
	gdk_window_get_frame_extents( window, &fRect ); //	Getting size and position including decorations
	
	//Calculating borders
	borderLeft = (fRect.width-720)/2;
	borderBottom = fRect.height - (576 + (yOrigin-fRect.y));
	
	gtk_window_move( GTK_WINDOW(videoOverlay), fRect.x+(fRect.width-720)+x-borderLeft, fRect.y+(fRect.height-576)+y-borderBottom );
	
}

void resize(GtkWidget *_overlay, int w, int h){
	GdkGeometry hints;
	hints.min_width = w;
	hints.min_height = h;
	hints.width_inc = w;
	hints.height_inc = h;
	
	GdkWindowHints mask = (GdkWindowHints) (GDK_HINT_RESIZE_INC | GDK_HINT_MIN_SIZE );

	gtk_window_set_geometry_hints (GTK_WINDOW (_overlay),
		_overlay,
		&hints,
		mask);
}

static void on_window_destroyed( GtkWidget * widget, gpointer user_data ) {
	gtk_main_quit();
}

int main(int argc, char * argv[]){
	GtkWidget *_window,*_overlay,*_view;
	Size s;
	gtk_init(NULL, NULL);
	
	// Main window initialization
	_window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
	gtk_window_set_position(GTK_WINDOW(_window), GTK_WIN_POS_CENTER);
	gtk_window_set_default_size(GTK_WINDOW(_window), 720, 576);
	gtk_window_set_title(GTK_WINDOW(_window), "Sample");
	gtk_widget_set_double_buffered(_window, FALSE);
		
	// Set background color
	GdkColor color;
	gdk_color_parse ("black", &color);
	gtk_widget_modify_bg (_window, GTK_STATE_NORMAL, &color);

	// Connect signals
	g_signal_connect( GTK_OBJECT(_window), "destroy", G_CALLBACK (on_window_destroyed), NULL);

	gtk_widget_show(_window);
	
	//	Create Overlay
	_overlay = gtk_window_new(GTK_WINDOW_TOPLEVEL);
	gtk_window_set_decorated (GTK_WINDOW (_overlay), FALSE);
	gtk_window_set_resizable (GTK_WINDOW(_overlay), FALSE);
	gtk_window_set_skip_taskbar_hint( GTK_WINDOW(_overlay), TRUE );
	gtk_window_set_transient_for(GTK_WINDOW(_overlay),GTK_WINDOW(_window));
	gtk_window_set_accept_focus( GTK_WINDOW(_overlay), FALSE );
	gtk_window_set_destroy_with_parent( GTK_WINDOW(_overlay), TRUE );

	gtk_widget_realize(_overlay);
	
	//	Set overlay position
	s.y=s.x=0;
	move(_overlay,_window, s.x, s.y);
	
	//	Set overlay size
	s.w=720;
	s.h=576;
	resize(_overlay, s.w, s.h);

	gdk_window_restack(
		gtk_widget_get_window(_overlay),
		gtk_widget_get_window(_window),
		FALSE
	);
	
	gtk_widget_show(_overlay);
	
	/*
	// Create WebKit
	_view = webkit_web_view_new ();

	//	Setup webkit
	webkit_web_view_set_full_content_zoom( WEBKIT_WEB_VIEW (_view), TRUE );
	webkit_web_view_set_transparent( WEBKIT_WEB_VIEW (_view), TRUE );
	
	//	Load url
	webkit_web_view_load_uri (WEBKIT_WEB_VIEW (_view), "http://google.com.ar"; );

	//Show webkit
	gtk_container_add(GTK_CONTAINER(_overlay),_view);
	gtk_widget_show (_view);
	*/

	// Move and resize overlay
	s.y=100;
	s.x=100;
	s.w=620;
	s.h=476;
	move(_overlay,_window, s.x, s.y);
	resize(_overlay, s.w, s.h);
	
	//	Run loop
	gtk_main();
	return 0;	
}