gtk2drawing.c

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        setup_widget_prototype(gScrolledWindowWidget);
    }
    return MOZ_GTK_SUCCESS;
}

static GtkStateType
ConvertGtkState(GtkWidgetState* state)
{
    if (state->disabled)
        return GTK_STATE_INSENSITIVE;
    else if (state->depressed)
        return (state->inHover ? GTK_STATE_PRELIGHT : GTK_STATE_ACTIVE);
    else if (state->inHover)
        return (state->active ? GTK_STATE_ACTIVE : GTK_STATE_PRELIGHT);
    else
        return GTK_STATE_NORMAL;
}

static gint
TSOffsetStyleGCArray(GdkGC** gcs, gint xorigin, gint yorigin)
{
    int i;
    /* there are 5 gc's in each array, for each of the widget states */
    for (i = 0; i < 5; ++i)
        gdk_gc_set_ts_origin(gcs[i], xorigin, yorigin);
    return MOZ_GTK_SUCCESS;
}

static gint
TSOffsetStyleGCs(GtkStyle* style, gint xorigin, gint yorigin)
{
    TSOffsetStyleGCArray(style->fg_gc, xorigin, yorigin);
    TSOffsetStyleGCArray(style->bg_gc, xorigin, yorigin);
    TSOffsetStyleGCArray(style->light_gc, xorigin, yorigin);
    TSOffsetStyleGCArray(style->dark_gc, xorigin, yorigin);
    TSOffsetStyleGCArray(style->mid_gc, xorigin, yorigin);
    TSOffsetStyleGCArray(style->text_gc, xorigin, yorigin);
    TSOffsetStyleGCArray(style->base_gc, xorigin, yorigin);
    gdk_gc_set_ts_origin(style->black_gc, xorigin, yorigin);
    gdk_gc_set_ts_origin(style->white_gc, xorigin, yorigin);
    return MOZ_GTK_SUCCESS;
}

static gint
moz_gtk_button_paint(GdkDrawable* drawable, GdkRectangle* rect,
                     GdkRectangle* cliprect, GtkWidgetState* state,
                     GtkReliefStyle relief, GtkWidget* widget,
                     GtkTextDirection direction)
{
    GtkShadowType shadow_type;
    GtkStyle* style = widget->style;
    GtkStateType button_state = ConvertGtkState(state);
    gint x = rect->x, y=rect->y, width=rect->width, height=rect->height;

    gboolean interior_focus;
    gint focus_width, focus_pad;

    moz_gtk_widget_get_focus(widget, &interior_focus, &focus_width, &focus_pad);

    if (WINDOW_IS_MAPPED(drawable)) {
        gdk_window_set_back_pixmap(drawable, NULL, TRUE);
        gdk_window_clear_area(drawable, cliprect->x, cliprect->y,
                              cliprect->width, cliprect->height);
    }

    gtk_widget_set_state(widget, button_state);
    gtk_widget_set_direction(widget, direction);

    if (state->isDefault)
        GTK_WIDGET_SET_FLAGS(widget, GTK_HAS_DEFAULT);

    GTK_BUTTON(widget)->relief = relief;

    /* Some theme engines love to cause us pain in that gtk_paint_focus is a
       no-op on buttons and button-like widgets. They only listen to this flag. */
    if (state->focused && !state->disabled)
        GTK_WIDGET_SET_FLAGS(widget, GTK_HAS_FOCUS);

    if (!interior_focus && state->focused) {
        x += focus_width + focus_pad;
        y += focus_width + focus_pad;
        width -= 2 * (focus_width + focus_pad);
        height -= 2 * (focus_width + focus_pad);
    }

    shadow_type = button_state == GTK_STATE_ACTIVE ||
                      state->depressed ? GTK_SHADOW_IN : GTK_SHADOW_OUT;
 
    if (state->isDefault && relief == GTK_RELIEF_NORMAL) {
        gtk_paint_box(style, drawable, button_state, shadow_type, cliprect,
                      widget, "buttondefault", x, y, width, height);                   
    }
 
    if (relief != GTK_RELIEF_NONE || state->depressed ||
           (button_state != GTK_STATE_NORMAL &&
            button_state != GTK_STATE_INSENSITIVE)) {
        TSOffsetStyleGCs(style, x, y);
        /* the following line can trigger an assertion (Crux theme)
           file ../../gdk/gdkwindow.c: line 1846 (gdk_window_clear_area):
           assertion `GDK_IS_WINDOW (window)' failed */
        gtk_paint_box(style, drawable, button_state, shadow_type, cliprect,
                      widget, "button", x, y, width, height);
    }

    if (state->focused) {
        if (interior_focus) {
            x += widget->style->xthickness + focus_pad;
            y += widget->style->ythickness + focus_pad;
            width -= 2 * (widget->style->xthickness + focus_pad);
            height -= 2 * (widget->style->ythickness + focus_pad);
        } else {
            x -= focus_width + focus_pad;
            y -= focus_width + focus_pad;
            width += 2 * (focus_width + focus_pad);
            height += 2 * (focus_width + focus_pad);
        }

        TSOffsetStyleGCs(style, x, y);
        gtk_paint_focus(style, drawable, button_state, cliprect,
                        widget, "button", x, y, width, height);
    }

    GTK_WIDGET_UNSET_FLAGS(widget, GTK_HAS_DEFAULT);
    GTK_WIDGET_UNSET_FLAGS(widget, GTK_HAS_FOCUS);
    return MOZ_GTK_SUCCESS;
}

gint
moz_gtk_init()
{
    GtkWidgetClass *entry_class;

    is_initialized = TRUE;
    have_arrow_scaling = (gtk_major_version > 2 ||
                          (gtk_major_version == 2 && gtk_minor_version >= 12));

    have_2_10 = (gtk_major_version > 2 ||
                 (gtk_major_version == 2 && gtk_minor_version >= 10));

    /* Add style property to GtkEntry.
     * Adding the style property to the normal GtkEntry class means that it
     * will work without issues inside GtkComboBox and for Spinbuttons. */
    entry_class = g_type_class_ref(GTK_TYPE_ENTRY);
    gtk_widget_class_install_style_property(entry_class,
        g_param_spec_boolean("honors-transparent-bg-hint",
                             "Transparent BG enabling flag",
                             "If TRUE, the theme is able to draw the GtkEntry on non-prefilled background.",
                             FALSE,
                             G_PARAM_READWRITE));

    return MOZ_GTK_SUCCESS;
}

gint
moz_gtk_checkbox_get_metrics(gint* indicator_size, gint* indicator_spacing)
{
    ensure_checkbox_widget();

    gtk_widget_style_get (gCheckboxWidget,
                          "indicator_size", indicator_size,
                          "indicator_spacing", indicator_spacing,
                          NULL);

    return MOZ_GTK_SUCCESS;
}

gint
moz_gtk_radio_get_metrics(gint* indicator_size, gint* indicator_spacing)
{
    ensure_radiobutton_widget();

    gtk_widget_style_get (gRadiobuttonWidget,
                          "indicator_size", indicator_size,
                          "indicator_spacing", indicator_spacing,
                          NULL);

    return MOZ_GTK_SUCCESS;
}

gint
moz_gtk_widget_get_focus(GtkWidget* widget, gboolean* interior_focus,
                         gint* focus_width, gint* focus_pad) 
{
    gtk_widget_style_get (widget,
                          "interior-focus", interior_focus,
                          "focus-line-width", focus_width,
                          "focus-padding", focus_pad,
                          NULL);

    return MOZ_GTK_SUCCESS;
}

gint
moz_gtk_splitter_get_metrics(gint orientation, gint* size)
{
    if (orientation == GTK_ORIENTATION_HORIZONTAL) {
        ensure_hpaned_widget();
        gtk_widget_style_get(gHPanedWidget, "handle_size", size, NULL);
    } else {
        ensure_vpaned_widget();
        gtk_widget_style_get(gVPanedWidget, "handle_size", size, NULL);
    }
    return MOZ_GTK_SUCCESS;
}

gint
moz_gtk_button_get_inner_border(GtkWidget* widget, GtkBorder* inner_border)
{
    static const GtkBorder default_inner_border = { 1, 1, 1, 1 };
    GtkBorder *tmp_border = NULL;

    if (have_2_10)
        gtk_widget_style_get (widget, "inner-border", &tmp_border, NULL);

    if (tmp_border) {
        *inner_border = *tmp_border;
        gtk_border_free(tmp_border);
    }
    else
        *inner_border = default_inner_border;

    return MOZ_GTK_SUCCESS;
}

static gint
moz_gtk_toggle_paint(GdkDrawable* drawable, GdkRectangle* rect,
                     GdkRectangle* cliprect, GtkWidgetState* state,
                     gboolean selected, gboolean isradio,
                     GtkTextDirection direction)
{
    GtkStateType state_type = ConvertGtkState(state);
    GtkShadowType shadow_type = (selected)?GTK_SHADOW_IN:GTK_SHADOW_OUT;
    gint indicator_size, indicator_spacing;
    gint x, y, width, height;
    gint focus_x, focus_y, focus_width, focus_height;
    GtkWidget *w;
    GtkStyle *style;

    if (isradio) {
        moz_gtk_radio_get_metrics(&indicator_size, &indicator_spacing);
        w = gRadiobuttonWidget;
    } else {
        moz_gtk_checkbox_get_metrics(&indicator_size, &indicator_spacing);
        w = gCheckboxWidget;
    }

    /*
     * vertically center in the box, since XUL sometimes ignores our
     * GetMinimumWidgetSize in the vertical dimension
     */
    x = rect->x;
    y = rect->y + (rect->height - indicator_size) / 2;
    width = indicator_size;
    height = indicator_size;

    focus_x = x - indicator_spacing;
    focus_y = y - indicator_spacing;
    focus_width = width + 2 * indicator_spacing;
    focus_height = height + 2 * indicator_spacing;
  
    style = w->style;
    TSOffsetStyleGCs(style, x, y);

    gtk_widget_set_sensitive(w, !state->disabled);
    gtk_widget_set_direction(w, direction);
    GTK_TOGGLE_BUTTON(w)->active = selected;
      
    if (isradio) {
        gtk_paint_option(style, drawable, state_type, shadow_type, cliprect,
                         gRadiobuttonWidget, "radiobutton", x, y,
                         width, height);
        if (state->focused) {
            gtk_paint_focus(style, drawable, GTK_STATE_ACTIVE, cliprect,
                            gRadiobuttonWidget, "radiobutton", focus_x, focus_y,
                            focus_width, focus_height);
        }
    }
    else {
        gtk_paint_check(style, drawable, state_type, shadow_type, cliprect, 
                        gCheckboxWidget, "checkbutton", x, y, width, height);
        if (state->focused) {
            gtk_paint_focus(style, drawable, GTK_STATE_ACTIVE, cliprect,
                            gCheckboxWidget, "checkbutton", focus_x, focus_y,
                            focus_width, focus_height);
        }
    }

    return MOZ_GTK_SUCCESS;
}

static gint
calculate_button_inner_rect(GtkWidget* button, GdkRectangle* rect,
                            GdkRectangle* inner_rect,
                            GtkTextDirection direction,
                            gboolean ignore_focus)
{
    GtkBorder inner_border;
    gboolean interior_focus;
    gint focus_width, focus_pad;
    GtkStyle* style;

    style = button->style;

    /* This mirrors gtkbutton's child positioning */
    moz_gtk_button_get_inner_border(button, &inner_border);
    moz_gtk_widget_get_focus(button, &interior_focus,
                             &focus_width, &focus_pad);

    if (ignore_focus)
        focus_width = focus_pad = 0;

    inner_rect->x = rect->x + XTHICKNESS(style) + focus_width + focus_pad;
    inner_rect->x += direction == GTK_TEXT_DIR_LTR ?
                        inner_border.left : inner_border.right;
    inner_rect->y = rect->y + inner_border.top + YTHICKNESS(style) +
                    focus_width + focus_pad;
    inner_rect->width = MAX(1, rect->width - inner_border.left -
       inner_border.right - (XTHICKNESS(style) + focus_pad + focus_width) * 2);
    inner_rect->height = MAX(1, rect->height - inner_border.top -
       inner_border.bottom - (YTHICKNESS(style) + focus_pad + focus_width) * 2);

    return MOZ_GTK_SUCCESS;
}


static gint
calculate_arrow_rect(GtkWidget* arrow, GdkRectangle* rect,
                     GdkRectangle* arrow_rect, GtkTextDirection direction)
{
    /* defined in gtkarrow.c */
    gfloat arrow_scaling = 0.7;
    gfloat xalign, xpad;
    gint extent;
    GtkMisc* misc = GTK_MISC(arrow);

    if (have_arrow_scaling)
        gtk_widget_style_get(arrow, "arrow_scaling", &arrow_scaling, NULL);

    extent = MIN((rect->width - misc->xpad * 2),
                 (rect->height - misc->ypad * 2)) * arrow_scaling;

    xalign = direction == GTK_TEXT_DIR_LTR ? misc->xalign : 1.0 - misc->xalign;
    xpad = misc->xpad + (rect->width - extent) * xalign;

    arrow_rect->x = direction == GTK_TEXT_DIR_LTR ?
                        floor(rect->x + xpad) : ceil(rect->x + xpad);
    arrow_rect->y = floor(rect->y + misc->ypad +
                          ((rect->height - extent) * misc->yalign));

    arrow_rect->width = arrow_rect->height = extent;

    return MOZ_GTK_SUCCESS;
}

static gint
moz_gtk_scrollbar_button_paint(GdkDrawable* drawable, GdkRectangle* rect,
                               GdkRectangle* cliprect, GtkWidgetState* state,
                               GtkScrollbarButtonFlags flags,
                               GtkTextDirection direction)
{
    GtkStateType state_type = ConvertGtkState(state);
    GtkShadowType shadow_type = (state->active) ?
        GTK_SHADOW_IN : GTK_SHADOW_OUT;
    GdkRectangle arrow_rect;
    GtkStyle* style;
    GtkWidget *scrollbar;
    GtkArrowType arrow_type;
    gint arrow_displacement_x, arrow_displacement_y;
    const char* detail = (flags & MOZ_GTK_STEPPER_VERTICAL) ?
                           "vscrollbar" : "hscrollbar";

    ensure_scrollbar_widget();