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// Copyright (c) 2010 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "views/widget/tooltip_window_gtk.h"
#include <gtk/gtk.h>
#include "base/utf_string_conversions.h"
namespace views {
TooltipWindowGtk::TooltipWindowGtk(GtkWidget* widget)
: host_(widget),
window_(NULL),
alignment_(NULL),
label_(NULL) {
Init();
}
TooltipWindowGtk::~TooltipWindowGtk() {
if (window_)
gtk_widget_destroy(window_);
}
void TooltipWindowGtk::SetTooltipText(const std::wstring& text) {
const std::string& utf8 = WideToUTF8(text);
gtk_label_set_text(label(), utf8.c_str());
}
GtkLabel* TooltipWindowGtk::label() {
return GTK_LABEL(label_);
}
void TooltipWindowGtk::Init() {
// Creates and setup tooltip window.
window_ = gtk_window_new(GTK_WINDOW_POPUP);
gtk_window_set_type_hint(GTK_WINDOW(window_), GDK_WINDOW_TYPE_HINT_TOOLTIP);
gtk_widget_set_app_paintable(window_, TRUE);
gtk_window_set_resizable(GTK_WINDOW(window_), FALSE);
gtk_widget_set_name(window_, "gtk-tooltip");
GdkColormap* rgba_colormap =
gdk_screen_get_rgba_colormap(gdk_screen_get_default());
if (rgba_colormap)
gtk_widget_set_colormap(window_, rgba_colormap);
g_signal_connect(G_OBJECT(window_), "expose-event",
G_CALLBACK(&OnPaintThunk), this);
g_signal_connect(G_OBJECT(window_), "style-set",
G_CALLBACK(&OnStyleSetThunk), this);
alignment_ = gtk_alignment_new(0.5, 0.5, 1.0, 1.0);
gtk_container_add(GTK_CONTAINER(window_), alignment_);
gtk_widget_show(alignment_);
label_ = gtk_label_new("");
gtk_label_set_line_wrap(GTK_LABEL(label_), TRUE);
gtk_container_add(GTK_CONTAINER(alignment_), label_);
gtk_widget_show(label_);
// Associates the tooltip window with given widget
gtk_widget_set_tooltip_window(host_, GTK_WINDOW(window_));
}
// Paints our customized tooltip window.
gboolean TooltipWindowGtk::OnPaint(GtkWidget* widget, GdkEventExpose* event) {
gtk_paint_flat_box(widget->style,
widget->window,
GTK_STATE_NORMAL,
GTK_SHADOW_OUT,
NULL,
widget,
"tooltip",
0, 0,
widget->allocation.width,
widget->allocation.height);
return FALSE;
}
// Style change handler.
void TooltipWindowGtk::OnStyleSet(GtkWidget* widget,
GtkStyle* previous_style) {
gtk_alignment_set_padding(GTK_ALIGNMENT(alignment_),
widget->style->ythickness,
widget->style->ythickness,
widget->style->xthickness,
widget->style->xthickness);
gtk_widget_queue_draw(widget);
}
} // namespace views
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