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path: root/src/gui/skilldialog.cpp
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/*
 *  The ManaPlus Client
 *  Copyright (C) 2004-2009  The Mana World Development Team
 *  Copyright (C) 2009-2010  The Mana Developers
 *  Copyright (C) 2011-2012  The ManaPlus Developers
 *
 *  This file is part of The ManaPlus Client.
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#include "gui/skilldialog.h"

#include "itemshortcut.h"
#include "localplayer.h"
#include "playerinfo.h"
#include "configuration.h"

#include "gui/setup.h"
#include "gui/shortcutwindow.h"
#include "gui/textpopup.h"
#include "gui/viewport.h"

#include "gui/widgets/label.h"
#include "gui/widgets/layouthelper.h"
#include "gui/widgets/listbox.h"
#include "gui/widgets/progressbar.h"
#include "gui/widgets/scrollarea.h"
#include "gui/widgets/tab.h"

#include "net/net.h"
#include "net/playerhandler.h"
#include "net/specialhandler.h"

#include "resources/image.h"
#include "resources/resourcemanager.h"

#include "utils/dtor.h"
#include "utils/gettext.h"

#include <guichan/font.hpp>

#include <set>
#include <string>

#include "debug.h"

class SkillModel;
class SkillEntry;

class SkillModel final : public gcn::ListModel
{
    public:
        int getNumberOfElements()
        { return static_cast<int>(mVisibleSkills.size()); }

        SkillInfo *getSkillAt(const int i) const
        {
            if (i < 0 || i >= static_cast<int>(mVisibleSkills.size()))
                return nullptr;
            return mVisibleSkills.at(i);
        }

        std::string getElementAt(int i)
        {
            if (getSkillAt(i))
                return getSkillAt(i)->name;
            else
                return "";
        }

        void updateVisibilities();

        void addSkill(SkillInfo *const info)
        { mSkills.push_back(info); }

    private:
        SkillList mSkills;
        SkillList mVisibleSkills;
};

class SkillListBox final : public ListBox
{
    public:
        SkillListBox(const Widget2 *const widget, SkillModel *const model) :
            ListBox(widget, model),
            mModel(model),
            mPopup(new TextPopup),
            mHighlightColor(getThemeColor(Theme::HIGHLIGHT)),
            mTextColor(getThemeColor(Theme::TEXT))
        {
            if (mSkin)
                mTextPadding = mSkin->getOption("textPadding", 34);
        }

        A_DELETE_COPY(SkillListBox)

        ~SkillListBox()
        {
            delete mModel;
            mModel = nullptr;
            delete mPopup;
            mPopup = nullptr;
        }

        SkillInfo *getSelectedInfo() const
        {
            const int selected = getSelected();
            if (!mListModel || selected < 0
                || selected > mListModel->getNumberOfElements())
            {
                return nullptr;
            }

            return static_cast<SkillModel*>(mListModel)->getSkillAt(selected);
        }

        void draw(gcn::Graphics *gcnGraphics)
        {
            if (!mListModel)
                return;

            SkillModel *const model = static_cast<SkillModel*>(mListModel);
            updateAlpha();
            Graphics *const graphics = static_cast<Graphics *const>(
                gcnGraphics);

            mHighlightColor.a = static_cast<int>(mAlpha * 255.0f);
            graphics->setColor(mHighlightColor);
            graphics->setFont(getFont());

            // Draw filled rectangle around the selected list element
            if (mSelected >= 0)
            {
                graphics->fillRectangle(gcn::Rectangle(mPadding, getRowHeight()
                    * mSelected + mPadding, getWidth() - 2 * mPadding,
                    getRowHeight()));
            }

            // Draw the list elements
            graphics->setColor(mTextColor);
            const int width2 = getWidth() - mPadding;
            for (int i = 0, y = 1;
                 i < model->getNumberOfElements();
                 ++i, y += getRowHeight())
            {
                SkillInfo *const e = model->getSkillAt(i);
                if (e)
                    e->draw(graphics, mPadding, mTextPadding, y, width2);
            }
        }

        unsigned int getRowHeight() const
        { return 34; }

        void mouseMoved(gcn::MouseEvent &event)
        {
            ListBox::mouseMoved(event);
            if (!viewport)
                return;

            const int y = (event.getY() + mPadding) / getRowHeight();
            if (!mModel || y >= mModel->getNumberOfElements())
                return;
            const SkillInfo *const skill = mModel->getSkillAt(y);
            if (!skill)
                return;

            mPopup->show(viewport->getMouseX(), viewport->getMouseY(),
                skill->dispName);
        }

        void mouseExited(gcn::MouseEvent &event A_UNUSED)
        {
            mPopup->hide();
        }

    private:
        SkillModel *mModel;
        TextPopup *mPopup;
        gcn::Color mHighlightColor;
        gcn::Color mTextColor;
        int mTextPadding;
};

class SkillTab final : public Tab
{
    public:
        SkillTab(const Widget2 *const widget,
                 const std::string &name, SkillListBox *const listBox) :
            Tab(widget),
            mListBox(listBox)
        {
            setCaption(name);
        }

        A_DELETE_COPY(SkillTab)

        ~SkillTab()
        {
            delete mListBox;
            mListBox = nullptr;
        }

        SkillInfo *getSelectedInfo() const
        {
            if (mListBox)
                return mListBox->getSelectedInfo();
            else
                return nullptr;
        }

    protected:
        void setCurrent()
        {
            if (skillDialog)
                skillDialog->updateTabSelection();
        }

    private:
        SkillListBox *mListBox;
};

SkillDialog::SkillDialog() :
    Window(_("Skills"), false, nullptr, "skills.xml"),
    gcn::ActionListener(),
    mTabs(new TabbedArea(this)),
    mPointsLabel(new Label(this, "0")),
    mUseButton(new Button(this, _("Use"), "use", this)),
    mIncreaseButton(new Button(this, _("Up"), "inc", this)),
    mDefaultModel(nullptr)
{
    setWindowName("Skills");
    setCloseButton(true);
    setResizable(true);
    setSaveVisible(true);
    setStickyButtonLock(true);
    setDefaultSize(windowContainer->getWidth() - 280, 30, 275, 425);
    setupWindow->registerWindowForReset(this);

    mUseButton->setEnabled(false);

    place(0, 0, mTabs, 5, 5);
    place(0, 5, mPointsLabel, 4);
    place(3, 5, mUseButton);
    place(4, 5, mIncreaseButton);

    setLocationRelativeTo(getParent());
    loadWindowState();
    enableVisibleSound(true);
}

SkillDialog::~SkillDialog()
{
    // Clear gui
    clearSkills();
}

void SkillDialog::action(const gcn::ActionEvent &event)
{
    if (event.getId() == "inc")
    {
        const SkillTab *const tab = static_cast<const SkillTab *const>(
            mTabs->getSelectedTab());
        if (tab)
        {
            if (const SkillInfo *const info = tab->getSelectedInfo())
                Net::getPlayerHandler()->increaseSkill(info->id);
        }
    }
    else if (event.getId() == "sel")
    {
        const SkillTab *const tab = static_cast<const SkillTab *const>(
            mTabs->getSelectedTab());
        if (tab)
        {
            if (const SkillInfo *const info = tab->getSelectedInfo())
            {
                mUseButton->setEnabled(info->range > 0);

                const int num = itemShortcutWindow->getTabIndex();
                if (num >= 0 && num < static_cast<int>(SHORTCUT_TABS)
                    && itemShortcut[num])
                {
                    itemShortcut[num]->setItemSelected(
                        info->id + SKILL_MIN_ID);
                }
            }
            else
            {
                mUseButton->setEnabled(false);
            }
        }
    }
    else if (event.getId() == "use")
    {
        const SkillTab *const tab = static_cast<const SkillTab *const>(
            mTabs->getSelectedTab());
        if (tab)
        {
            const SkillInfo *const info = tab->getSelectedInfo();
            if (info && player_node && player_node->getTarget())
            {
                const Being *const being = player_node->getTarget();
                if (being)
                {
                    Net::getSpecialHandler()->useBeing(info->level,
                        info->id, being->getId());
                }
            }
        }
    }
    else if (event.getId() == "close")
    {
        setVisible(false);
    }
}

std::string SkillDialog::update(const int id)
{
    const SkillMap::const_iterator i = mSkills.find(id);

    if (i != mSkills.end())
    {
        SkillInfo *const info = i->second;
        if (info)
        {
            info->update();
            return info->name;
        }
    }

    return std::string();
}

void SkillDialog::update()
{
    mPointsLabel->setCaption(strprintf(_("Skill points available: %d"),
        PlayerInfo::getAttribute(PlayerInfo::SKILL_POINTS)));
    mPointsLabel->adjustSize();

    for (SkillMap::const_iterator it = mSkills.begin(), it_end = mSkills.end();
         it != it_end; ++ it)
    {
        if ((*it).second && (*it).second->modifiable)
            (*it).second->update();
    }
}

void SkillDialog::clearSkills()
{
    mTabs->removeAll();
    delete_all(mSkills);
    mSkills.clear();
}

void SkillDialog::loadSkills()
{
    clearSkills();

    XML::Document doc("ea-skills.xml");
    XML::Document doc2("skills.xml");
    XmlNodePtr root = doc.rootNode();

    int setCount = 0;
    std::string setName;
    ScrollArea *scroll;
    SkillListBox *listbox;
    SkillTab *tab;

    if (!root || !xmlNameEqual(root, "skills"))
        root = doc2.rootNode();

    if (!root || !xmlNameEqual(root, "skills"))
    {
        logger->log("Error loading skills");

#ifdef MANASERV_SUPPORT
        if (Net::getNetworkType() != ServerInfo::MANASERV)
#endif
        {
            SkillModel *const model = new SkillModel();
            if (!mDefaultModel)
                mDefaultModel = model;

            SkillInfo *const skill = new SkillInfo;
            skill->id = 1;
            skill->name = _("basic");
            skill->dispName = _("Skill: basic, Id: 1");
            skill->shortName = "bas";
            skill->setIcon("");
            skill->modifiable = true;
            skill->visible = true;
            skill->model = model;
            skill->update();

            model->addSkill(skill);
            mSkills[1] = skill;

            model->updateVisibilities();

            listbox = new SkillListBox(this, model);
            listbox->setActionEventId("sel");
            listbox->addActionListener(this);
            scroll = new ScrollArea(listbox, false);
            scroll->setHorizontalScrollPolicy(ScrollArea::SHOW_NEVER);
            scroll->setVerticalScrollPolicy(ScrollArea::SHOW_ALWAYS);

            tab = new SkillTab(this, "Skills", listbox);
            mDeleteTabs.push_back(tab);

            mTabs->addTab(tab, scroll);

            update();
        }
        return;
    }

    for_each_xml_child_node(set, root)
    {
        if (xmlNameEqual(set, "set"))
        {
            setCount++;
            setName = XML::getProperty(set, "name",
                strprintf(_("Skill Set %d"), setCount));

            SkillModel *const model = new SkillModel();
            if (!mDefaultModel)
                mDefaultModel = model;

            for_each_xml_child_node(node, set)
            {
                if (xmlNameEqual(node, "skill"))
                {
                    const int id = atoi(XML::getProperty(
                        node, "id", "-1").c_str());
                    std::string name = XML::langProperty(node, "name",
                        strprintf(_("Skill %d"), id));
                    std::string icon = XML::getProperty(node, "icon", "");

                    SkillInfo *const skill = new SkillInfo;
                    skill->id = static_cast<short unsigned>(id);
                    skill->name = name;
                    skill->dispName = strprintf(_("Skill: %s, Id: %d"),
                        name.c_str(), skill->id);
                    skill->shortName = XML::langProperty(node,
                        "shortName", name.substr(0, 3));
                    skill->setIcon(icon);
                    skill->modifiable = false;
                    skill->visible = false;
                    skill->particle = XML::getProperty(node, "particle", "");
                    skill->soundHit = XML::getProperty(node, "soundHit", "");
                    skill->soundMiss = XML::getProperty(node, "soundMiss", "");
                    skill->model = model;
                    skill->update();

                    model->addSkill(skill);

                    mSkills[id] = skill;
                }
            }

            model->updateVisibilities();

            // possible leak listbox, scroll
            listbox = new SkillListBox(this, model);
            listbox->setActionEventId("sel");
            listbox->addActionListener(this);
            scroll = new ScrollArea(listbox, false);
            scroll->setHorizontalScrollPolicy(ScrollArea::SHOW_NEVER);
            scroll->setVerticalScrollPolicy(ScrollArea::SHOW_ALWAYS);

            tab = new SkillTab(this, setName, listbox);
            mDeleteTabs.push_back(tab);

            mTabs->addTab(tab, scroll);
        }
    }
    update();
}

bool SkillDialog::updateSkill(const int id, const int range,
                              const bool modifiable)
{
    const SkillMap::const_iterator it = mSkills.find(id);

    if (it != mSkills.end())
    {
        SkillInfo *const info = it->second;
        if (info)
        {
            info->modifiable = modifiable;
            info->range = range;
            info->update();
        }
        return true;
    }
    return false;
}

void SkillDialog::addSkill(const int id, const int level, const int range,
                           const bool modifiable)
{
    if (mDefaultModel)
    {
        SkillInfo *const skill = new SkillInfo;
        skill->id = static_cast<short unsigned>(id);
        skill->name = "Unknown skill Id: " + toString(id);
        skill->dispName = "Unknown skill Id: " + toString(id);
        skill->setIcon("");
        skill->modifiable = modifiable;
        skill->visible = false;
        skill->model = mDefaultModel;
        skill->level = level;
        skill->skillLevel = strprintf(_("Lvl: %d"), level);
        skill->range = range;
        skill->update();

        mDefaultModel->addSkill(skill);

        mSkills[id] = skill;
        mDefaultModel->updateVisibilities();
    }
}

void SkillModel::updateVisibilities()
{
    mVisibleSkills.clear();

    for (SkillList::const_iterator it = mSkills.begin(),
         it_end = mSkills.end();
         it != it_end; ++ it)
    {
        if ((*it)->visible)
            mVisibleSkills.push_back((*it));
    }
}

SkillInfo::SkillInfo() :
    id(0), name(""), shortName(""), dispName(""), icon(nullptr),
    modifiable(false), visible(false), model(nullptr), level(0),
    skillLevel(""), skillLevelWidth(0), skillExp(""), progress(0.0f), range(0),
    particle(""), soundHit(""), soundMiss("")
{
}

SkillInfo::~SkillInfo()
{
    if (icon)
    {
        icon->decRef();
        icon = nullptr;
    }
}

void SkillInfo::setIcon(const std::string &iconPath)
{
    ResourceManager *const res = ResourceManager::getInstance();
    if (!iconPath.empty())
    {
        icon = res->getImage(iconPath);
    }

    if (!icon)
    {
        icon = Theme::getImageFromTheme(
            paths.getStringValue("unknownItemFile"));
    }
}

void SkillInfo::update()
{
    const int baseLevel = PlayerInfo::getStatBase(
        static_cast<PlayerInfo::Attribute>(id));
    const int effLevel = PlayerInfo::getStatEffective(
        static_cast<PlayerInfo::Attribute>(id));

    const std::pair<int, int> exp = PlayerInfo::getStatExperience(
        static_cast<PlayerInfo::Attribute>(id));

    if (!modifiable && baseLevel == 0 && effLevel == 0 && exp.second == 0)
    {
        if (visible)
        {
            visible = false;
            if (model)
                model->updateVisibilities();
        }

        return;
    }

    const bool updateVisibility = !visible;
    visible = true;

    if (effLevel != baseLevel)
    {
        skillLevel = strprintf(_("Lvl: %d (%+d)"), baseLevel,
                               effLevel - baseLevel);
    }
    else
    {
        if (baseLevel == 0)
            skillLevel.clear();
        else
            skillLevel = strprintf(_("Lvl: %d"), baseLevel);
    }
    level = baseLevel;
    skillLevelWidth = -1;

    if (exp.second)
    {
        skillExp = strprintf("%d / %d", exp.first, exp.second);
        progress = static_cast<float>(exp.first)
                   / static_cast<float>(exp.second);
    }
    else
    {
        skillExp.clear();
        progress = 0.0f;
    }

    color = Theme::getProgressColor(Theme::PROG_EXP, progress);

    if (updateVisibility && model)
        model->updateVisibilities();
}

void SkillInfo::draw(Graphics *const graphics, const int padding,
                     const int paddingText, const int y, const int width)
{
    const int yPad = y + padding;
    graphics->drawImage(icon, padding, yPad);
    graphics->drawText(name, paddingText, yPad);

    if (skillLevelWidth < 0)
    {
        // Add one for padding
        skillLevelWidth = graphics->getFont()->getWidth(skillLevel) + 1;
    }

    graphics->drawText(skillLevel, width - skillLevelWidth, yPad);
}

SkillInfo* SkillDialog::getSkill(int id)
{
    return mSkills[id];
}

void SkillDialog::widgetResized(const gcn::Event &event)
{
    Window::widgetResized(event);

    if (mTabs)
        mTabs->fixSize();
}

void SkillDialog::useItem(const int itemId)
{
    const SkillInfo *const info = mSkills[itemId - SKILL_MIN_ID];
    if (info && player_node && player_node->getTarget())
    {
        const Being *const being = player_node->getTarget();
        if (being)
        {
            Net::getSpecialHandler()->useBeing(info->level,
                info->id, being->getId());
        }
    }
}

void SkillDialog::updateTabSelection()
{
    const SkillTab *const tab = static_cast<SkillTab*>(
        mTabs->getSelectedTab());
    if (tab)
    {
        if (const SkillInfo *const info = tab->getSelectedInfo())
            mUseButton->setEnabled(info->range > 0);
        else
            mUseButton->setEnabled(false);
    }
}