ui/qt/menu.cpp

/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright 2014 Olaf Wintermann. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *   1. Redistributions of source code must retain the above copyright
 *      notice, this list of conditions and the following disclaimer.
 *
 *   2. Redistributions in binary form must reproduce the above copyright
 *      notice, this list of conditions and the following disclaimer in the
 *      documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#include <stdio.h>
#include <stdlib.h>
#include <inttypes.h>
#include <QMenuBar>
#include <QAction>

#include "menu.h"
#include "toolkit.h"
#include "../common/context.h"
#include "../common/menu.h"
#include "../ui/properties.h"
#include "../ui/window.h"
#include "container.h"


static ui_menu_add_f createMenuItem[] = {
    /* UI_MENU                 */ add_menu_widget,
    /* UI_MENU_ITEM            */ add_menuitem_widget,
    /* UI_MENU_CHECK_ITEM      */ add_checkitem_widget,
    /* UI_MENU_RADIO_ITEM      */ add_radioitem_widget,
    /* UI_MENU_ITEM_LIST       */ add_menuitem_list_widget,
    /* UI_MENU_CHECKITEM_LIST  */ add_menuitem_list_widget,
    /* UI_MENU_RADIOITEM_LIST  */ add_menuitem_list_widget,
    /* UI_MENU_SEPARATOR       */ add_menuseparator_widget
};

/*
 * create all menu child items
 */
static void add_menu_items(QMenu *parent, int i, UiMenu *menu, UiObject *obj) {
    UiMenuItemI *it = menu->items_begin;
    int index = 0;
    while(it) {
        createMenuItem[it->type](parent, index, it, obj);
        it = it->next;
        index++;
    }
}

void add_menu_widget(QMenu *parent, int i, UiMenuItemI *item, UiObject *obj) {
    UiMenu *m = (UiMenu*)item;
    QMenu *menu = parent->addMenu(m->label);
    add_menu_items(menu, i, m, obj);
}

static UiAction* create_action(
        UiObject *obj,
        const char *icon,
        const char *label,
        ui_callback callback,
        void *userdata,
        int *states)
{
    QString str = QString::fromUtf8(label);
    UiAction *action = new UiAction(obj, str, callback, userdata);
    if(icon) {
        action->setIcon(QIcon::fromTheme(icon));
        action->setIconVisibleInMenu(true);
    }
    
    if(states) {
        size_t nstates = uic_state_array_size(states);
        uic_add_state_widget_i(obj->ctx, action, (ui_enablefunc)ui_action_enable, states, nstates);
        action->setEnabled(false);
    }
    
    return action;
}

void add_menuitem_widget(QMenu *parent, int i, UiMenuItemI *item, UiObject *obj) {
    UiMenuItem *it = (UiMenuItem*)item;
    UiAction *action = create_action(obj, it->icon, it->label, it->callback, it->userdata, it->states);
    parent->addAction(action);
    QObject::connect(action, SIGNAL(triggered()), action, SLOT(trigger()));
}

void add_menuseparator_widget(QMenu *parent, int i, UiMenuItemI *item, UiObject *obj) {
    parent->addSeparator();
}

void add_checkitem_widget(QMenu *parent, int i, UiMenuItemI *item, UiObject *obj) {
    UiMenuCheckItem *it = (UiMenuCheckItem*)item;
    
    UiAction *action = create_action(obj, it->icon, it->label, it->callback, it->userdata, it->states);
    parent->addAction(action);
    action->setCheckable(true);
    action->prepare_event = ui_checkableaction_prepare_event;
    
    UiVar* var = uic_widget_var(obj->ctx, obj->ctx, NULL, it->varname, UI_VAR_INTEGER);
    if(var) {
        UiInteger *value = (UiInteger*)var->value;
        value->obj = action;
        value->get = ui_checkableaction_get;
        value->set = ui_checkableaction_set;
        
        action->setChecked((bool)value->value);
    }
    action->var = var;
}

void add_radioitem_widget(QMenu *parent, int index, UiMenuItemI *item, UiObject *obj) {
    UiMenuRadioItem *it = (UiMenuRadioItem*)item;
    
    UiAction *action = create_action(obj, it->icon, it->label, it->callback, it->userdata, it->states);
    parent->addAction(action);
    action->setCheckable(true);
    action->prepare_event = ui_actiongroup_prepare_event;
    
    UiVar* var = uic_widget_var(obj->ctx, obj->ctx, NULL, it->varname, UI_VAR_INTEGER);
    if(var) {
        UiInteger *value = (UiInteger*)var->value;
        QActionGroup *group = (QActionGroup*)value->obj;
        if(!group) {
            group = new QActionGroup(parent);
            value->obj = group;
        }
        group->addAction(action);
        value->get = ui_actiongroup_get;
        value->set = ui_actiongroup_set;
        if(value->value != 0) {
            ui_actiongroup_set(value, value->value);
        }
    }
    action->var;
}

void ui_actiongroup_prepare_event(UiEvent *event, UiAction *action) {
    if(action->var) {
        UiInteger *value = (UiInteger*)action->var->value;
        event->eventdata = value;
        event->eventdatatype = UI_EVENT_DATA_INTEGER_VALUE;
        event->intval = value->get(value);
    }
}

int64_t ui_actiongroup_get(UiInteger *value) {
    QActionGroup *group = (QActionGroup*)value->obj;
    auto actions = group->actions();
    int i = 1;
    foreach(const QAction *action, actions) {
        if(action->isChecked()) {
            value->value = i;
            break;
        }
        i++;
    }
    return value->value;
}

void ui_actiongroup_set(UiInteger *value, int64_t i) {
    QActionGroup *group = (QActionGroup*)value->obj;
    auto actions = group->actions();
    if(i > 0) {
        if(i-1 < actions.size()) {
            actions[i]->setEnabled(true);
        }
        value->value = i;
    } else {
        foreach(QAction *action, actions) {
            action->setEnabled(false);
        }
        value->value = 0;
    }
}

void add_menuitem_list_widget(QMenu *parent, int i, UiMenuItemI *item, UiObject *obj) {
    
}


void ui_add_menus(UiObject *obj, QMainWindow *window) {
    UiMenu *menus_begin = uic_get_menu_list();
    if(menus_begin == NULL) {
        return;
    }
    
    QMenuBar *mb = window->menuBar();
    
    UiMenu *ls = menus_begin;
    while(ls) {
        if(ls->item.type == UI_MENU) {
            QMenu *menu = mb->addMenu(ls->label);
            add_menu_items(menu, 0, ls, obj);
        }        
        ls = (UiMenu*)ls->item.next;
    }
}

void ui_checkableaction_prepare_event(UiEvent *event, UiAction *action) {
    if(action->var) {
        event->eventdata = action->var->value;
        event->eventdatatype = UI_EVENT_DATA_INTEGER_VALUE;
    }
    event->intval = action->isChecked();
}

int64_t ui_checkableaction_get(UiInteger *value) {
    UiAction *action= (UiAction*)value->obj;
    value->value = action->isChecked();
    return value->value;
}

void ui_checkableaction_set(UiInteger *value, int64_t i) {
    UiAction *action = (UiAction*)value->obj;
    value->value = i;
    if(i != 0) {
        action->setChecked((bool)i);
    }
}