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Diffstat (limited to 'plugingui/layout.cc')
| -rw-r--r-- | plugingui/layout.cc | 175 |
1 files changed, 175 insertions, 0 deletions
diff --git a/plugingui/layout.cc b/plugingui/layout.cc new file mode 100644 index 0000000..f12887e --- /dev/null +++ b/plugingui/layout.cc @@ -0,0 +1,175 @@ +/* -*- 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) +{ + this->parent = parent; +} + +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(); +} + +// +// BoxLayout +// + +BoxLayout::BoxLayout(LayoutItem *parent) + : Layout(parent) +{ + resize_children = true; +} + +void BoxLayout::setResizeChildren(bool resize_children) +{ + this->resize_children = resize_children; +} + +// +// VBoxLayout +// + +VBoxLayout::VBoxLayout(LayoutItem *parent) + : BoxLayout(parent), align(HALIGN_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(resize_children)item->resize(w, h); + item->move(0, y); + y += h; + ++i; + } +} + +// +// HBoxLayout +// + +HBoxLayout::HBoxLayout(LayoutItem *parent) + : BoxLayout(parent) + , align(VALIGN_CENTER) +{ +} + +void HBoxLayout::layout() +{ + 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(resize_children) + { + item->resize(w, h); + item->move(x, 0); + } + else + { + size_t y = 0; + switch(align) { + case VALIGN_TOP: + y = 0; + break; + case VALIGN_CENTER: + y = (h / 2) - (item->height() / 2); + break; + case VALIGN_BOTTOM: + y = h - item->height(); + break; + } + + int diff = w - item->width(); + item->move(x + diff / 2, y); + } + x += w; + ++i; + } +} + +void HBoxLayout::setVAlignment(alignment_t alignment) +{ + align = alignment; +} + +} // GUI:: |