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-rw-r--r--plugingui/Makefile.am.plugingui1
-rw-r--r--plugingui/layout.cc175
-rw-r--r--plugingui/layout.h125
-rw-r--r--plugingui/widget.h3
4 files changed, 303 insertions, 1 deletions
diff --git a/plugingui/Makefile.am.plugingui b/plugingui/Makefile.am.plugingui
index b1698e4..e2969f0 100644
--- a/plugingui/Makefile.am.plugingui
+++ b/plugingui/Makefile.am.plugingui
@@ -22,6 +22,7 @@ PLUGIN_GUI_SOURCES = \
$(top_srcdir)/plugingui/checkbox.cc \
$(top_srcdir)/plugingui/slider.cc \
$(top_srcdir)/plugingui/scrollbar.cc \
+ $(top_srcdir)/plugingui/layout.cc \
$(top_srcdir)/plugingui/listbox.cc \
$(top_srcdir)/plugingui/listboxthin.cc \
$(top_srcdir)/plugingui/listboxbasic.cc \
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::
diff --git a/plugingui/layout.h b/plugingui/layout.h
new file mode 100644
index 0000000..a81f004
--- /dev/null
+++ b/plugingui/layout.h
@@ -0,0 +1,125 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/***************************************************************************
+ * layout.h
+ *
+ * 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.
+ */
+#pragma once
+
+#include <list>
+#include <cstdlib>
+
+namespace GUI {
+
+class Layout;
+
+class LayoutItem {
+public:
+ LayoutItem();
+ virtual ~LayoutItem();
+
+ void setLayoutParent(Layout *parent);
+
+ virtual void resize(int width, int height) = 0;
+ virtual void move(size_t x, size_t y) = 0;
+ virtual size_t x() = 0;
+ virtual size_t y() = 0;
+ virtual size_t width() = 0;
+ virtual size_t height() = 0;
+
+private:
+ Layout *parent;
+};
+
+//! \brief Abtract Layout class.
+class Layout
+{
+public:
+ Layout(LayoutItem *parent);
+ virtual ~Layout() {}
+
+ virtual void addItem(LayoutItem *item);
+ virtual void removeItem(LayoutItem *item);
+
+ //! \brief Reimplement this method to create a new Layout rule.
+ virtual void layout() = 0;
+
+protected:
+ LayoutItem *parent;
+ typedef std::list<LayoutItem *> LayoutItemList;
+ LayoutItemList items;
+};
+
+//! \brief Abstract box layout
+class BoxLayout : public Layout {
+public:
+ BoxLayout(LayoutItem *parent);
+
+ //! \brief Set to false to only move the items, not scale them.
+ void setResizeChildren(bool resize_children);
+
+ virtual void layout() = 0;
+
+protected:
+ bool resize_children;
+};
+
+//! \brief A Layout that lays out its elements vertically.
+class VBoxLayout : public BoxLayout {
+public:
+ VBoxLayout(LayoutItem *parent);
+
+ typedef enum {
+ HALIGN_LEFT,
+ HALIGN_CENTER,
+ HALIGN_RIGHT,
+ } alignment_t;
+
+ void setHAlignment(alignment_t alignment);
+
+ virtual void layout();
+
+protected:
+ alignment_t align;
+};
+
+//! \brief A Layout that lays out its elements vertically.
+class HBoxLayout : public BoxLayout {
+public:
+ HBoxLayout(LayoutItem *parent);
+
+ typedef enum {
+ VALIGN_TOP,
+ VALIGN_CENTER,
+ VALIGN_BOTTOM,
+ } alignment_t;
+
+ void setVAlignment(alignment_t alignment);
+
+ virtual void layout();
+
+protected:
+ alignment_t align;
+};
+
+} // GUI::
diff --git a/plugingui/widget.h b/plugingui/widget.h
index 10b221a..32acd5c 100644
--- a/plugingui/widget.h
+++ b/plugingui/widget.h
@@ -29,6 +29,7 @@
#include "guievent.h"
#include "pixelbuffer.h"
#include "notifier.h"
+#include "layout.h"
#include <vector>
@@ -36,7 +37,7 @@ namespace GUI {
class Window;
-class Widget : public Listener {
+class Widget : public Listener, LayoutItem {
public:
Widget(Widget *parent);
virtual ~Widget();
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-01 22:32:24 +0000