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Diffstat (limited to 'plugingui/layout.cc')
| -rw-r--r-- | plugingui/layout.cc | 219 |
1 files changed, 219 insertions, 0 deletions
diff --git a/plugingui/layout.cc b/plugingui/layout.cc new file mode 100644 index 0000000..65042a4 --- /dev/null +++ b/plugingui/layout.cc @@ -0,0 +1,219 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/*************************************************************************** + * layout.cc + * + * Sat Mar 21 15:12:36 CET 2015 + * Copyright 2015 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 General Public License as published by + * the Free Software Foundation; either version 2 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 General Public License for more details. + * + * You should have received a copy of the GNU 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 "layout.h" + +#include "widget.h" + +namespace GUI { + +LayoutItem::LayoutItem() + : parent(nullptr) +{ +} + +LayoutItem::~LayoutItem() +{ + setLayoutParent(nullptr); // Will disconnect from layout if any. +} + +void LayoutItem::setLayoutParent(Layout *p) +{ + if(this->parent) + { + this->parent->removeItem(this); + } + + this->parent = p; +} + +Layout::Layout(LayoutItem *parent) + : parent(parent) +{ + auto widget = dynamic_cast<Widget*>(parent); + if(widget) + { + CONNECT(widget, sizeChangeNotifier, this, &Layout::sizeChanged); + } +} + +void Layout::addItem(LayoutItem *item) +{ + items.push_back(item); + item->setLayoutParent(this); + layout(); +} + +void Layout::removeItem(LayoutItem *item) +{ + LayoutItemList::iterator i = items.begin(); + while(i != items.end()) + { + if(*i == item) + { + i = items.erase(i); + continue; + } + ++i; + } + + layout(); +} + +void Layout::sizeChanged(int width, int height) +{ + layout(); +} + +// +// BoxLayout +// + +BoxLayout::BoxLayout(LayoutItem *parent) + : Layout(parent) +{ +} + +void BoxLayout::setResizeChildren(bool resizeChildren) +{ + this->resizeChildren = resizeChildren; + layout(); +} + +void BoxLayout::setSpacing(size_t spacing) +{ + this->spacing = spacing; + layout(); +} + +// +// VBoxLayout +// + +VBoxLayout::VBoxLayout(LayoutItem *parent) + : BoxLayout(parent) + , align(HAlignment::center) +{ +} + +void VBoxLayout::layout() +{ + size_t y = 0; + size_t w = parent->width(); + //size_t h = parent->height() / items.size(); + + LayoutItemList::iterator i = items.begin(); + while(i != items.end()) + { + LayoutItem *item = *i; + if(resizeChildren) + { + item->resize(w, parent->height() / items.size()); + } + + size_t x = 0; + switch(align) { + case HAlignment::left: + x = 0; + break; + case HAlignment::center: + x = (w / 2) - (item->width() / 2); + break; + case HAlignment::right: + x = w - item->width(); + break; + } + + item->move(x, y); + y += item->height() + spacing; + ++i; + } +} + +void VBoxLayout::setHAlignment(HAlignment alignment) +{ + align = alignment; +} + +// +// HBoxLayout +// + +HBoxLayout::HBoxLayout(LayoutItem *parent) + : BoxLayout(parent) + , align(VAlignment::center) +{ +} + +void HBoxLayout::layout() +{ + if(items.empty()) + { + return; + } + +// size_t w = parent->width() / items.size(); + size_t h = parent->height(); + size_t x = 0; + + LayoutItemList::iterator i = items.begin(); + while(i != items.end()) + { + LayoutItem *item = *i; + if(resizeChildren) + { + item->resize(parent->width() / items.size(), h); + item->move(x, 0); + } + else + { + size_t y = 0; + switch(align) { + case VAlignment::top: + y = 0; + break; + case VAlignment::center: + y = (h / 2) - (item->height() / 2); + break; + case VAlignment::bottom: + y = h - item->height(); + break; + } + + int diff = 0;//w - item->width(); + item->move(x + diff / 2, y); + } + x += item->width() + spacing; + ++i; + } +} + +void HBoxLayout::setVAlignment(VAlignment alignment) +{ + align = alignment; +} + +} // GUI:: |