From 645250e1cd8ce9bc1faea599df7a1b05836bfeb8 Mon Sep 17 00:00:00 2001 From: Bent Bisballe Nyeng Date: Tue, 29 Dec 2020 16:09:43 +0100 Subject: Split UI code into application/plugin UI and UI library. --- dggui/knob.h | 88 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 88 insertions(+) create mode 100644 dggui/knob.h (limited to 'dggui/knob.h') diff --git a/dggui/knob.h b/dggui/knob.h new file mode 100644 index 0000000..fc71511 --- /dev/null +++ b/dggui/knob.h @@ -0,0 +1,88 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/*************************************************************************** + * knob.h + * + * Thu Feb 28 07:37:27 CET 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. + */ +#pragma once + +#include + +#include "widget.h" +#include "texture.h" +#include "font.h" + +namespace GUI { + +class Knob : public Widget { +public: + Knob(Widget *parent); + virtual ~Knob() = default; + + // From Widget: + bool catchMouse() override { return true; } + bool isFocusable() override { return true; } + + void setValue(float value); + void setDefaultValue(float value); + void setRange(float minimum, float maximum); + float value(); + void showValue(bool show_value); + + Notifier valueChangedNotifier; // (float newValue) + +protected: + virtual void clicked() {} + + // From Widget: + virtual void repaintEvent(RepaintEvent* repaintEvent) override; + virtual void buttonEvent(ButtonEvent* buttonEvent) override; + virtual void mouseMoveEvent(MouseMoveEvent* mouseMoveEvent) override; + virtual void scrollEvent(ScrollEvent* scrollEvent) override; + virtual void keyEvent(KeyEvent* keyEvent) override; + +private: + //! Sets the internal value and sends out the changed notification. + void internalSetValue(float value); + + typedef enum { + up, + down + } state_t; + + state_t state; + + float current_value; + float default_value = 0.0; + float maximum; + float minimum; + + bool show_value{true}; + + Texture img_knob; + + int mouse_offset_x; + Font font; +}; + +} // GUI:: -- cgit v1.2.3