scrollbar.cpp

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/* xoreos - A reimplementation of BioWare's Aurora engine
 *
 * xoreos is the legal property of its developers, whose names
 * can be found in the AUTHORS file distributed with this source
 * distribution.
 *
 * xoreos 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 3
 * of the License, or (at your option) any later version.
 *
 * xoreos 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 xoreos. If not, see <http://www.gnu.org/licenses/>.
 */

#include "src/common/system.h"

#include "src/aurora/gff3file.h"

#include "src/graphics/aurora/guiquad.h"
#include "src/graphics/aurora/textureman.h"

#include "src/engines/aurora/kotorjadegui/scrollbar.h"

namespace Engines {

WidgetScrollbar::WidgetScrollbar(GUI &gui, const Common::UString &tag)
    : KotORJadeWidget(gui, tag),
      _arrowHeight(0.0f) {
}

WidgetScrollbar::~WidgetScrollbar() {
}

void WidgetScrollbar::load(const Aurora::GFF3Struct &gff) {
    KotORJadeWidget::load(gff);

    float x, y, z;
    getPosition(x, y, z);

    if (gff.hasField("DIR")) {
        const Aurora::GFF3Struct &dir = gff.getStruct("DIR");
        Common::UString texName = dir.getString("IMAGE");
        if (!texName.empty()) {
            Graphics::Aurora::TextureHandle arrowTex = TextureMan.get(dir.getString("IMAGE"));
            _arrowHeight = arrowTex.getTexture().getHeight();

            _upArrow.reset(new Graphics::Aurora::GUIQuad(arrowTex, 0.0f, 0.0f, _width, _arrowHeight));
            _upArrow->setPosition(x, y + _height - _arrowHeight, 0.0f);

            _downArrow.reset(new Graphics::Aurora::GUIQuad(arrowTex, 0.0f, 0.0f, _width, _arrowHeight, 0.0f, 1.0f, 1.0f, 0.0f));
            _downArrow->setPosition(x, y, 0.0f);
        }
    }

    if (gff.hasField("THUMB")) {
        const Aurora::GFF3Struct &thumb = gff.getStruct("THUMB");

        _thumb.reset(new Graphics::Aurora::GUIQuad(thumb.getString("IMAGE"), 0.0f, 0.0f,
                _width - 2 * _borderDimension,
                _height - 2 * (_borderDimension + _arrowHeight)));

        _thumb->setPosition(x + _borderDimension, y + _arrowHeight + _borderDimension, 0.0f);
    }

    if (_highlight) {
        _highlight->setPosition(x, y + _arrowHeight, 0.0f);
        _highlight->setHeight(_height - 2 * _arrowHeight);
    }

    if (_border) {
        _border->setPosition(x, y + _arrowHeight, 0.0f);
        _border->setSize(_width, _height - 2 * _arrowHeight);
    }

    if (_quad) {
        _quad->setPosition(x, y + _borderDimension + _arrowHeight, 0.0f);
        _quad->setHeight(_height - 2 * (_borderDimension + _arrowHeight));
    }
}

void WidgetScrollbar::show() {
    if (isVisible() || isInvisible())
        return;

    KotORJadeWidget::show();

    if (_upArrow)
        _upArrow->show();
    if (_downArrow)
        _downArrow->show();
    if (_thumb)
        _thumb->show();
}

void WidgetScrollbar::hide() {
    if (!isVisible())
        return;

    if (_thumb)
        _thumb->hide();
    if (_downArrow)
        _downArrow->hide();
    if (_upArrow)
        _upArrow->hide();

    KotORJadeWidget::hide();
}

void WidgetScrollbar::setPosition(float x, float y, float z) {
    float oX, oY, oZ;
    getPosition(oX, oY, oZ);

    float dx = x - oX;
    float dy = y - oY;
    float dz = z - oZ;

    KotORJadeWidget::setPosition(x, y, z);

    if (_upArrow) {
        _upArrow->getPosition(x, y, z);
        _upArrow->setPosition(x + dx, y + dy, z + dz);
    }

    if (_downArrow) {
        _downArrow->getPosition(x, y, z);
        _downArrow->setPosition(x + dx, y + dy, z + dz);
    }

    if (_thumb) {
        _thumb->getPosition(x, y, z);
        _thumb->setPosition(x + dx, y + dy, z + dz);
    }
}

void WidgetScrollbar::setWidth(float width) {
    float deltaWidth = width - _width;

    KotORJadeWidget::setWidth(width);

    float x, y, z;
    getPosition(x, y, z);

    if (_upArrow) {
        width = _upArrow->getWidth();
        _upArrow->setWidth(width + deltaWidth);
    }

    if (_downArrow) {
        width = _downArrow->getWidth();
        _downArrow->setWidth(width + deltaWidth);
    }

    if (_thumb) {
        width = _thumb->getWidth();
        _thumb->setWidth(width + deltaWidth);
    }
}

void WidgetScrollbar::setHeight(float height) {
    float deltaHeight = height - _height;

    KotORJadeWidget::setHeight(height);

    float x, y, z;
    getPosition(x, y, z);

    if (_upArrow) {
        float aX, aY, aZ;
        _upArrow->getPosition(aX, aY, aZ);
        _upArrow->setPosition(aX, y + height - _arrowHeight, aZ);
    }

    if (_thumb) {
        height = _thumb->getHeight();
        _thumb->setHeight(height + deltaHeight);
    }
}

} // End of namespace Engines