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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/***************************************************************************
* widget.cc
*
* Sun Oct 9 13:01:44 CEST 2011
* Copyright 2011 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.
*/
#include "widget.h"
#include <cassert>
#include "painter.h"
#include "window.h"
namespace GUI
{
Widget::Widget(Widget* parent)
: parent(parent)
{
if(parent)
{
parent->addChild(this);
_window = parent->window();
}
pixbuf.x = translateToWindowX();
pixbuf.y = translateToWindowY();
}
Widget::~Widget()
{
if(parent)
{
parent->removeChild(this);
}
}
void Widget::show()
{
setVisible(true);
}
void Widget::hide()
{
setVisible(false);
}
void Widget::setVisible(bool visible)
{
_visible = visible;
pixbuf.visible = visible;
redraw();
}
bool Widget::visible() const
{
return _visible;
}
void Widget::redraw()
{
dirty = true;
window()->needsRedraw();
}
void Widget::addChild(Widget* widget)
{
children.push_back(widget);
}
void Widget::removeChild(Widget* widget)
{
for(auto i = children.begin(); i != children.end(); ++i)
{
if(*i == widget)
{
children.erase(i);
return;
}
}
}
void Widget::reparent(Widget* parent)
{
if(parent == this->parent)
{
return; // Already at the right parent.
}
if(this->parent)
{
this->parent->removeChild(this);
}
if(parent)
{
parent->addChild(this);
}
this->parent = parent;
}
void Widget::resize(std::size_t width, std::size_t height)
{
if((width < 1) || (height < 1) ||
((width == _width) && (height == _height)))
{
return;
}
_width = width;
_height = height;
// Store old size/position in pixelbuffer for rendering invalidation.
if(!pixbuf.has_last)
{
pixbuf.last_width = pixbuf.width;
pixbuf.last_height = pixbuf.height;
pixbuf.last_x = pixbuf.x;
pixbuf.last_y = pixbuf.y;
pixbuf.has_last = true;
}
pixbuf.realloc(width, height);
pixbuf.x = translateToWindowX();
pixbuf.y = translateToWindowY();
redraw();
sizeChangeNotifier(width, height);
}
void Widget::move(int x, int y)
{
if((_x == x) &&
(_y == y))
{
return;
}
_x = x;
_y = y;
// Store old size/position in pixelbuffer for rendering invalidation.
if(!pixbuf.has_last)
{
pixbuf.last_width = pixbuf.width;
pixbuf.last_height = pixbuf.height;
pixbuf.last_x = pixbuf.x;
pixbuf.last_y = pixbuf.y;
pixbuf.has_last = true;
}
//pixbuf.x = translateToWindowX();
//pixbuf.y = translateToWindowY();
positionChangeNotifier(x, y);
}
int Widget::x() const
{
return _x;
}
int Widget::y() const
{
return _y;
}
std::size_t Widget::width() const
{
return _width;
}
std::size_t Widget::height() const
{
return _height;
}
PixelBufferAlpha& Widget::GetPixelBuffer()
{
return pixbuf;
}
ImageCache& Widget::getImageCache()
{
assert(parent);
return parent->getImageCache();
}
Widget* Widget::find(int x, int y)
{
for(auto i = children.rbegin(); i != children.rend(); ++i)
{
Widget* widget = *i;
if(widget->visible())
{
if((x >= widget->x()) && (x < (widget->x() + (int)widget->width())) &&
(y >= widget->y()) && (y < (widget->y() + (int)widget->height())))
{
return widget->find(x - widget->x(), y - widget->y());
}
}
}
return this;
}
Window* Widget::window()
{
return _window;
}
std::vector<PixelBufferAlpha*> Widget::getPixelBuffers()
{
std::vector<PixelBufferAlpha*> pixelBuffers;
pixbuf.x = translateToWindowX();
pixbuf.y = translateToWindowY();
if(dirty)
{
repaintEvent(nullptr);
pixbuf.dirty = true;
dirty = false;
}
if(pixbuf.dirty || visible())
{
pixelBuffers.push_back(&pixbuf);
}
if(visible())
{
for(auto child : children)
{
auto childPixelBuffers = child->getPixelBuffers();
pixelBuffers.insert(pixelBuffers.end(),
childPixelBuffers.begin(), childPixelBuffers.end());
}
}
return pixelBuffers;
}
bool Widget::hasKeyboardFocus()
{
return window()->keyboardFocus() == this;
}
std::size_t Widget::translateToWindowX()
{
size_t window_x = x();
if(parent)
{
window_x += parent->translateToWindowX();
}
return window_x;
}
std::size_t Widget::translateToWindowY()
{
size_t window_y = y();
if(parent)
{
window_y += parent->translateToWindowY();
}
return window_y;
}
} // GUI::
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