Split UI code into application/plugin UI and UI library.

1 files changed, 362 insertions, 0 deletions

diff --git a/dggui/listboxbasic.cc b/dggui/listboxbasic.cc
new file mode 100644
index 0000000..b2637eb
--- /dev/null
+++ b/dggui/listboxbasic.cc
@@ -0,0 +1,362 @@
+/* -*- 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::