/*
 * Copyright (c) 2010 Mike Qin <mikeandmore@gmail.com>
 *
 * The contents of this file are subject to the terms of either the GNU Lesser
 * General Public License Version 2.1 only ("LGPL") or the Common Development and
 * Distribution License ("CDDL")(collectively, the "License"). You may not use this
 * file except in compliance with the License. You can obtain a copy of the CDDL at
 * http://www.opensource.org/licenses/cddl1.php and a copy of the LGPLv2.1 at
 * http://www.opensource.org/licenses/lgpl-license.php. See the License for the
 * specific language governing permissions and limitations under the License. When
 * distributing the software, include this License Header Notice in each file and
 * include the full text of the License in the License file as well as the
 * following notice:
 *
 * NOTICE PURSUANT TO SECTION 9 OF THE COMMON DEVELOPMENT AND DISTRIBUTION LICENSE
 * (CDDL)
 * For Covered Software in this distribution, this License shall be governed by the
 * laws of the State of California (excluding conflict-of-law provisions).
 * Any litigation relating to this License shall be subject to the jurisdiction of
 * the Federal Courts of the Northern District of California and the state courts
 * of the State of California, with venue lying in Santa Clara County, California.
 *
 * Contributor(s):
 *
 * If you wish your version of this file to be governed by only the CDDL or only
 * the LGPL Version 2.1, indicate your decision by adding "[Contributor]" elects to
 * include this software in this distribution under the [CDDL or LGPL Version 2.1]
 * license." If you don't indicate a single choice of license, a recipient has the
 * option to distribute your version of this file under either the CDDL or the LGPL
 * Version 2.1, or to extend the choice of license to its licensees as provided
 * above. However, if you add LGPL Version 2.1 code and therefore, elected the LGPL
 * Version 2 license, then the option applies only if the new code is made subject
 * to such option by the copyright holder.
 */

#include "ui.h"
#include "settings.h"
#include "sunpinyin_preedit_ui.h"

GtkPreeditUI::GtkPreeditUI()
    : PreeditUI("classic")
{
    main_wnd_ = ui_create_window();
    GtkWidget* box = gtk_vbox_new(FALSE, 1);
    gtk_container_add(GTK_CONTAINER(main_wnd_), box);

    preedit_area_ = gtk_label_new("");
    candidate_area_ = gtk_label_new("");

    gtk_misc_set_alignment(GTK_MISC(preedit_area_), 0, 0.5);
    gtk_misc_set_alignment(GTK_MISC(candidate_area_), 0, 0.5);

    gtk_box_pack_start(GTK_BOX(box), preedit_area_,
                       FALSE, FALSE, 1);
    gtk_box_pack_start(GTK_BOX(box), candidate_area_,
                       FALSE, FALSE, 1);
    gtk_widget_show_all(box);
    gtk_widget_realize(main_wnd_);
}

GtkPreeditUI::~GtkPreeditUI()
{
    gtk_widget_destroy(main_wnd_);
}

void
GtkPreeditUI::show()
{
    gtk_widget_show(main_wnd_);
}

void
GtkPreeditUI::hide()
{
    gtk_widget_hide(main_wnd_);
}

void
GtkPreeditUI::move(int x, int y)
{
    int width = 0, height = 0;
    gtk_window_get_size(GTK_WINDOW(main_wnd_), &width, &height);
    adjust_position(&x, &y, width, height);
    gtk_window_move(GTK_WINDOW(main_wnd_), x, y);
}

void
GtkPreeditUI::reload()
{
    GdkColor color;
    varchar value;
    double opa = 1.0;

    settings_get(PREEDIT_COLOR, value);
    gdk_color_parse(value, &color);
    gtk_widget_modify_bg(main_wnd_, GTK_STATE_NORMAL, &color);

    settings_get(PREEDIT_FONT, value);
    gtk_widget_modify_font(candidate_area_,
                           pango_font_description_from_string(value));

    settings_get(PREEDIT_FONT_COLOR, value);
    gdk_color_parse(value, &color);
    gtk_widget_modify_fg(candidate_area_, GTK_STATE_NORMAL, &color);
    gtk_widget_modify_fg(preedit_area_, GTK_STATE_NORMAL, &color);

    settings_get(PREEDIT_OPACITY, &opa);
    GdkScreen* screen = gtk_widget_get_screen(main_wnd_);
    if (opa < 1.0) {
        GdkColormap* cmap = gdk_screen_get_rgba_colormap(screen);
        if (cmap) {
            gtk_widget_set_colormap(main_wnd_, cmap);
            gtk_window_set_opacity(GTK_WINDOW(main_wnd_), opa);
        }
    } else {
        GdkColormap* cmap = gdk_screen_get_rgb_colormap(screen);
        gtk_window_set_opacity(GTK_WINDOW(main_wnd_), 1.0);
        gtk_widget_set_colormap(main_wnd_, cmap);
    }
}

void
GtkPreeditUI::update_preedit_string(const char* utf_str)
{
    gtk_label_set_text(GTK_LABEL(preedit_area_), utf_str);
}

void
GtkPreeditUI::update_candidates_string(const char* utf_str)
{
    gtk_label_set(GTK_LABEL(candidate_area_), utf_str);

    PangoLayout* pre_lay = gtk_label_get_layout(GTK_LABEL(preedit_area_));
    PangoLayout* can_lay = gtk_label_get_layout(GTK_LABEL(candidate_area_));
    int x = 0, y = 0;
    int pre_wid = -1, can_wid = -1;
    pango_layout_get_pixel_size(pre_lay, &pre_wid, NULL);
    pango_layout_get_pixel_size(can_lay, &can_wid, NULL);

    gtk_window_resize(GTK_WINDOW(main_wnd_), MAX(pre_wid, can_wid) + 1, 1);

    gtk_window_get_position(GTK_WINDOW(main_wnd_), &x, &y);
    move(x, y);
}