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+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/***************************************************************************
+ * listboxbasic.cc
+ *
+ * Thu Apr 4 20:28:10 CEST 2013
+ * Copyright 2013 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 "listboxbasic.h"
+
+#include "painter.h"
+#include "font.h"
+
+namespace GUI {
+
+ListBoxBasic::ListBoxBasic(Widget *parent)
+ : Widget(parent)
+ , scroll(this)
+{
+ scroll.move(0,0);
+ scroll.resize(16, 100);
+
+ CONNECT(&scroll, valueChangeNotifier,
+ this, &ListBoxBasic::onScrollBarValueChange);
+
+ padding = 4;
+ btn_size = 18;
+
+ selected = -1;
+ marked = -1;
+}
+
+ListBoxBasic::~ListBoxBasic()
+{
+}
+
+void ListBoxBasic::setSelection(int index)
+{
+ selected = index;
+ if(marked == -1)
+ {
+ marked = index;
+ }
+ valueChangedNotifier();
+}
+
+void ListBoxBasic::addItem(const std::string& name, const std::string& value)
+{
+ std::vector<ListBoxBasic::Item> items;
+ ListBoxBasic::Item item;
+ item.name = name;
+ item.value = value;
+ items.push_back(item);
+ addItems(items);
+}
+
+void ListBoxBasic::addItems(const std::vector<ListBoxBasic::Item>& newItems)
+{
+ for(auto& item : newItems)
+ {
+ items.push_back(item);
+ }
+
+ if(selected == -1)
+ {
+ //setSelection((int)items.size() - 1);
+ setSelection(0);
+ }
+ redraw();
+}
+
+void ListBoxBasic::clear()
+{
+ items.clear();
+ setSelection(-1);
+ marked = -1;
+ scroll.setValue(0);
+ redraw();
+}
+
+bool ListBoxBasic::selectItem(int index)
+{
+ if(index < 0 || (index > (int)items.size() - 1))
+ {
+ return false;
+ }
+
+ setSelection(index);
+ redraw();
+
+ return true;
+}
+
+std::string ListBoxBasic::selectedName()
+{
+ if(selected < 0 || (selected > (int)items.size() - 1))
+ {
+ return "";
+ }
+
+ return items[selected].name;
+}
+
+std::string ListBoxBasic::selectedValue()
+{
+ if(selected < 0 || (selected > (int)items.size() - 1))
+ {
+ return "";
+ }
+
+ return items[selected].value;
+}
+
+void ListBoxBasic::clearSelectedValue()
+{
+ setSelection(-1);
+}
+
+void ListBoxBasic::onScrollBarValueChange(int value)
+{
+ redraw();
+}
+
+void ListBoxBasic::repaintEvent(RepaintEvent* repaintEvent)
+{
+ Painter p(*this);
+
+ int w = width();
+ int h = height();
+
+ if((w == 0) || (h == 0))
+ {
+ return;
+ }
+
+ p.drawImageStretched(0, 0, bg_img, w, h);
+
+ p.setColour(Colour(183.0f/255.0f, 219.0f/255.0f, 255.0f/255.0f, 1.0f));
+
+ int yoffset = padding / 2;
+ int skip = scroll.value();
+ int numitems = height() / (font.textHeight() + padding) + 1;
+ for(int idx = skip; (idx < (int)items.size()) && (idx < (skip + numitems));
+ idx++)
+ {
+ auto& item = items[idx];
+ if(idx == selected)
+ {
+ p.setColour(Colour(183.0f/255.0f, 219.0f/255.0f, 255.0f/255.0f, 0.5f));
+ p.drawFilledRectangle(0,
+ yoffset - (padding / 2),
+ width() - 1,
+ yoffset + (font.textHeight() + 1));
+ }
+
+ if(idx == marked)
+ {
+ p.drawRectangle(0,
+ yoffset - (padding / 2),
+ width() - 1,
+ yoffset + (font.textHeight() + 1));
+ }
+
+ p.setColour(Colour(183.0f/255.0f, 219.0f/255.0f, 255.0f/255.0f, 1.0f));
+
+ p.drawText(2, yoffset + font.textHeight(), font, item.name);
+ yoffset += font.textHeight() + padding;
+ }
+
+ scroll.setRange(numitems);
+ scroll.setMaximum(items.size());
+}
+
+void ListBoxBasic::scrollEvent(ScrollEvent* scrollEvent)
+{
+ // forward scroll event to scroll bar.
+ scroll.scrollEvent(scrollEvent);
+}
+
+void ListBoxBasic::keyEvent(KeyEvent* keyEvent)
+{
+ if(keyEvent->direction != Direction::down)
+ {
+ return;
+ }
+
+ switch(keyEvent->keycode) {
+ case Key::up:
+ if(marked == 0)
+ {
+ return;
+ }
+
+ marked--;
+
+ if(marked < scroll.value())
+ {
+ scroll.setValue(marked);
+ }
+ break;
+
+ case Key::down:
+ {
+ // Number of items that can be displayed at a time.
+ int numitems = height() / (font.textHeight() + padding);
+
+ if(marked == ((int)items.size() - 1))
+ {
+ return;
+ }
+
+ marked++;
+
+ if(marked > (scroll.value() + numitems - 1))
+ {
+ scroll.setValue(marked - numitems + 1);
+ }
+ }
+ break;
+
+ case Key::home:
+ marked = 0;
+ if(marked < scroll.value())
+ {
+ scroll.setValue(marked);
+ }
+ break;
+
+ case Key::end:
+ {
+ // Number of items that can be displayed at a time.
+ int numitems = height() / (font.textHeight() + padding);
+
+ marked = (int)items.size() - 1;
+ if(marked > (scroll.value() + numitems - 1))
+ {
+ scroll.setValue(marked - numitems + 1);
+ }
+ }
+ break;
+
+ case Key::character:
+ if(keyEvent->text == " ")
+ {
+ setSelection(marked);
+ //selectionNotifier();
+ }
+ break;
+
+ case Key::enter:
+ setSelection(marked);
+ selectionNotifier();
+ break;
+
+ default:
+ break;
+ }
+
+ redraw();
+}
+
+void ListBoxBasic::buttonEvent(ButtonEvent* buttonEvent)
+{
+ // Ignore everything except left clicks.
+ if(buttonEvent->button != MouseButton::left)
+ {
+ return;
+ }
+
+ if((buttonEvent->x > ((int)width() - btn_size)) &&
+ (buttonEvent->y < ((int)width() - 1)))
+ {
+ if(buttonEvent->y > 0 && buttonEvent->y < btn_size)
+ {
+ if(buttonEvent->direction == Direction::up)
+ {
+ return;
+ }
+ scroll.setValue(scroll.value() - 1);
+ return;
+ }
+
+ if(buttonEvent->y > ((int)height() - btn_size) &&
+ buttonEvent->y < ((int)height() - 1))
+ {
+ if(buttonEvent->direction == Direction::up)
+ {
+ return;
+ }
+ scroll.setValue(scroll.value() + 1);
+ return;
+ }
+ }
+
+ if(buttonEvent->direction == Direction::up)
+ {
+ int skip = scroll.value();
+ size_t yoffset = padding / 2;
+ for(int idx = skip; idx < (int)items.size(); idx++)
+ {
+ yoffset += font.textHeight() + padding;
+ if(buttonEvent->y < (int)yoffset - (padding / 2))
+ {
+ setSelection(idx);
+ marked = selected;
+ clickNotifier();
+ break;
+ }
+ }
+
+ redraw();
+ }
+
+ if(buttonEvent->direction != Direction::up)
+ {
+ int skip = scroll.value();
+ size_t yoffset = padding / 2;
+ for(int idx = skip; idx < (int)items.size(); idx++)
+ {
+ yoffset += font.textHeight() + padding;
+ if(buttonEvent->y < ((int)yoffset - (padding / 2)))
+ {
+ marked = idx;
+ break;
+ }
+ }
+
+ redraw();
+ }
+
+ if(buttonEvent->doubleClick)
+ {
+ selectionNotifier();
+ }
+}
+
+void ListBoxBasic::resize(std::size_t width, std::size_t height)
+{
+ Widget::resize(width, height);
+ scroll.move(width - scroll.width(), 0);
+ scroll.resize(scroll.width(), height);
+}
+
+} // GUI::
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