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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/***************************************************************************
* texturedbox.h
*
* Sun Jun 5 12:22:14 CEST 2016
* Copyright 2016 Bent Bisballe Nyeng
* deva@aasimon.org
****************************************************************************/
/*
* This file is part of DrumGizmo.
*
* DrumGizmo is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* DrumGizmo 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with DrumGizmo; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*/
#pragma once
#include "drawable.h"
#include "imagecache.h"
#include "texture.h"
namespace GUI
{
class TexturedBox
: public Drawable
{
public:
//! Draw a box from 9 image segments nested inside the same image.
//! An image says more than a thousand words:
//! .----------------------------------------.
//! | (x0, y0) |
//! | \ dx1 dx2 dx3 |
//! | .-----+-----------+-----. \ |
//! | dy1 | A | <--B--> | C | | |
//! | +-----+-----------+-----+ | |
//! | | /|\ | /|\ | /|\ | | h |
//! | | | | | | | | | e |
//! | dy2 | D | <--E--> | F | > i |
//! | | | | | | | | | g |
//! | | \|/ | \|/ | \|/ | | h |
//! | +-----+-----------+-----+ | t |
//! | dy3 | G | <--H--> | I | | |
//! | `-----+-----------+-----` / |
//! | |
//! | \___________ ___________/ |
//! | V |
//! | width |
//! `----------------------------------------`
//!
//! \param image_cache A reference to the image cache object.
//! \param filename The filename of the texture image to use.
//! \param (x0, y0) is coordinate of the upper left corner of the A segment.
//! \param (width, height) is the total rendered size of the Box.
//! \param dx1 is the width of the A, C and F segments.
//! \param dx2 is the width of the B, E and H segments.
//! \param dx3 is the width of the C, F and I segments.
//! \param dy1 is the height of the A, B and C segments.
//! \param dy2 is the height of the D, E and F segments.
//! \param dy3 is the height of the G, G and I segments.
//!
//! Segments A, C, G and I are drawn with no stretch.
//! Segments B and H are stretched horizontally to fill the
//! gaps between A, C and G, I so that resulting width is 'width'
//! Segments D and F are stretched vertically to fill the
//! gaps between A, G and C, I so that resulting height is 'height'
//! Segment E will be stretched both horizontally and vertically
//! to fill the inner space between B, H and D, F.
TexturedBox(ImageCache& image_cache, const std::string& filename,
std::size_t x0, std::size_t y0,
std::size_t dx1, std::size_t dx2, std::size_t dx3,
std::size_t dy1, std::size_t dy2, std::size_t dy3);
// From Drawable:
std::size_t width() const override;
std::size_t height() const override;
void setSize(std::size_t width, std::size_t height);
const Colour& getPixel(std::size_t x, std::size_t y) const override;
const std::uint8_t* line(std::size_t y,
std::size_t x_offset = 0) const override;
bool hasAlpha() const override;
private:
Texture seg_a;
Texture seg_b;
Texture seg_c;
Texture seg_d;
Texture seg_e;
Texture seg_f;
Texture seg_g;
Texture seg_h;
Texture seg_i;
std::size_t dx1;
std::size_t dx2;
std::size_t dx3;
std::size_t dy1;
std::size_t dy2;
std::size_t dy3;
std::size_t _width{100};
std::size_t _height{100};
Colour outOfRange{0.0f, 0.0f, 0.0f, 0.0f};
};
} // GUI::
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