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
}
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
}