Example #1
0
func newGroup(text string, control Control) Group {
	ctext := togstr(text)
	defer freegstr(ctext)
	widget := C.gtk_frame_new(ctext)
	g := &group{
		controlSingleWidget: newControlSingleWidget(widget),
		gcontainer:          (*C.GtkContainer)(unsafe.Pointer(widget)),
		frame:               (*C.GtkFrame)(unsafe.Pointer(widget)),
		child:               control,
	}

	// with GTK+, groupboxes by default have frames and slightly x-offset regular text
	// they should have no frame and fully left-justified, bold text
	var yalign C.gfloat

	// preserve default y-alignment
	C.gtk_frame_get_label_align(g.frame, nil, &yalign)
	C.gtk_frame_set_label_align(g.frame, 0, yalign)
	C.gtk_frame_set_shadow_type(g.frame, C.GTK_SHADOW_NONE)
	label := (*C.GtkLabel)(unsafe.Pointer(C.gtk_frame_get_label_widget(g.frame)))
	// this is the boldness level used by GtkPrintUnixDialog
	// (it technically uses "bold" but see pango's pango-enum-types.c for the name conversion; GType is weird)
	bold := C.pango_attr_weight_new(C.PANGO_WEIGHT_BOLD)
	boldlist := C.pango_attr_list_new()
	C.pango_attr_list_insert(boldlist, bold)
	C.gtk_label_set_attributes(label, boldlist)
	C.pango_attr_list_unref(boldlist) // thanks baedert in irc.gimp.net/#gtk+

	g.container = newContainer()
	g.child.setParent(g.container.parent())
	g.container.resize = g.child.resize
	C.gtk_container_add(g.gcontainer, g.container.widget)

	return g
}
Example #2
0
func CreateXWindow(width, height int) (*XWindow, error) {
	C.XInitThreads()

	W := &XWindow{}

	W.Display = C.XOpenDisplay(nil)
	if W.Display == nil {
		return &XWindow{}, errors.New("Can't open display")
	}
	W.Window = C.XCreateSimpleWindow(W.Display, C.XDefaultRootWindow(W.Display), 0, 0, C.uint(width), C.uint(height), 0, 0, 0xFF151515)
	C.XSetWindowBackgroundPixmap(W.Display, W.Window, 0) // This avoids flickering on resize
	C.XMapWindow(W.Display, W.Window)
	C.XStoreName(W.Display, W.Window, C.CString("gowitt"))

	C.XSelectInput(W.Display, W.Window, C.ExposureMask|C.KeyPressMask|C.ButtonPressMask)
	C.XFlush(W.Display)

	// Cairo
	W.Surface = C.cairo_xlib_surface_create(W.Display, C.Drawable(W.Window), C.XDefaultVisual(W.Display, 0), C.int(width), C.int(height))
	C.cairo_xlib_surface_set_size(W.Surface, C.int(width), C.int(height))
	W.Cairo = C.cairo_create(W.Surface)

	// Pango
	InitLayoutsCache(W.Cairo)
	W.PangoContext = C.pango_cairo_create_context(W.Cairo)
	W.FontDesc = C.pango_font_description_from_string(C.CString("Sans 10"))

	W.AttrList = C.pango_attr_list_new()

	placeholderImage = C.cairo_image_surface_create_from_png(C.CString("test.png"))

	W.UserImages = NewImageCache(func() {
		var ev C.XEvent
		exev := (*C.XExposeEvent)(unsafe.Pointer(&ev))
		exev._type = C.Expose
		exev.count = 0
		exev.window = W.Window
		exev.send_event = 1
		exev.display = W.Display

		C.XSendEvent(W.Display, W.Window, 0, C.ExposureMask, &ev)
		C.XFlush(W.Display)
	})
	return W, nil
}