diff options
Diffstat (limited to 'plugingui/knob.cc')
| -rw-r--r-- | plugingui/knob.cc | 255 |
1 files changed, 0 insertions, 255 deletions
diff --git a/plugingui/knob.cc b/plugingui/knob.cc deleted file mode 100644 index 25200a7..0000000 --- a/plugingui/knob.cc +++ /dev/null @@ -1,255 +0,0 @@ -/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ -/*************************************************************************** - * knob.cc - * - * 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. - */ -#include "knob.h" - -#include "painter.h" - -#include <hugin.hpp> -#include <cmath> - -namespace -{ -const double pi = std::atan(1.0) * 4.0; -} - -namespace GUI -{ - -Knob::Knob(Widget *parent) - : Widget(parent) - , img_knob(getImageCache(), ":resources/knob.png") -{ - state = up; - - maximum = 1.0; - minimum = 0.0; - - current_value = 0.0; - - mouse_offset_x = 0; -} - -void Knob::setValue(float value) -{ - value -= minimum; - value /= (maximum - minimum); - internalSetValue(value); -} - -void Knob::setDefaultValue(float value) -{ - default_value = value; -} - -void Knob::setRange(float minimum, float maximum) -{ - this->minimum = minimum; - this->maximum = maximum; - internalSetValue(current_value); -} - -float Knob::value() -{ - return current_value * (maximum - minimum) + minimum; -} - -void Knob::showValue(bool show_value) -{ - this->show_value = show_value; -} - -void Knob::scrollEvent(ScrollEvent* scrollEvent) -{ - float value = (current_value - (scrollEvent->delta / 200.0)); - internalSetValue(value); -} - -void Knob::mouseMoveEvent(MouseMoveEvent* mouseMoveEvent) -{ - if(state == down) - { - if(mouse_offset_x == (mouseMoveEvent->x + (-1 * mouseMoveEvent->y))) - { - return; - } - - float dval = - mouse_offset_x - (mouseMoveEvent->x + (-1 * mouseMoveEvent->y)); - float value = current_value - (dval / 300.0); - - internalSetValue(value); - - mouse_offset_x = mouseMoveEvent->x + (-1 * mouseMoveEvent->y); - } -} - -void Knob::keyEvent(KeyEvent* keyEvent) -{ - if(keyEvent->direction != Direction::up) - { - return; - } - - float value = current_value; - switch(keyEvent->keycode) { - case Key::up: - value += 0.01; - break; - case Key::down: - value -= 0.01; - break; - case Key::right: - value += 0.01; - break; - case Key::left: - value -= 0.01; - break; - case Key::home: - value = 0; - break; - case Key::end: - value = 1; - break; - default: - break; - } - - internalSetValue(value); -} - -void Knob::buttonEvent(ButtonEvent* buttonEvent) -{ - // Ignore everything except left clicks. - if(buttonEvent->button != MouseButton::left) - { - return; - } - - if(buttonEvent->doubleClick) - { - float value = default_value; - value -= minimum; - value /= (maximum - minimum); - internalSetValue(value); - return; - } - - if(buttonEvent->direction == Direction::down) - { - state = down; - mouse_offset_x = buttonEvent->x + (-1 * buttonEvent->y); - return; - } - - if(buttonEvent->direction == Direction::up) - { - state = up; - mouse_offset_x = buttonEvent->x + (-1 * buttonEvent->y); - clicked(); - return; - } -} - -void Knob::repaintEvent(RepaintEvent* repaintEvent) -{ - int diameter = (width()>height()?height():width()); - int radius = diameter / 2; - int center_x = width() / 2; - int center_y = height() / 2; - - Painter p(*this); - p.clear(); - - p.drawImageStretched(0, 0, img_knob, diameter, diameter); - - float range = maximum - minimum; - - if (show_value) { - // Show 0, 1 or 2 decimal point depending on the size of the range - char buf[64]; - if(range> 100.0f) - { - sprintf(buf, "%.0f", current_value * range + minimum); - } - else if(range > 10.0f) - { - sprintf(buf, "%.1f", current_value * range + minimum); - } - else - { - sprintf(buf, "%.2f", current_value * range + minimum); - } - p.drawText(center_x - font.textWidth(buf) / 2 + 1, - center_y + font.textHeight(buf) / 2 + 1, font, buf); - } - - // Make it start from 20% and stop at 80% - double padval = current_value * 0.8 + 0.1; - - double from_x = sin((-1 * padval + 1) * 2 * pi) * radius * 0.6; - double from_y = cos((-1 * padval + 1) * 2 * pi) * radius * 0.6; - - double to_x = sin((-1 * padval + 1) * 2 * pi) * radius * 0.8; - double to_y = cos((-1 * padval + 1) * 2 * pi) * radius * 0.8; - - // Draw "fat" line by drawing 9 lines with moved start/ending points. - p.setColour(Colour(1.0f, 0.0f, 0.0f, 1.0f)); - for(int _x = -1; _x < 2; _x++) - { - for(int _y = -1; _y < 2; _y++) - { - p.drawLine(from_x + center_x + _x, - from_y + center_y + _y, - to_x + center_x + _x, - to_y + center_y + _y); - } - } -} - -void Knob::internalSetValue(float new_value) -{ - if(new_value < 0.0) - { - new_value = 0.0; - } - - if(new_value > 1.0) - { - new_value = 1.0; - } - - if(new_value == current_value) - { - return; - } - - current_value = new_value; - valueChangedNotifier(value()); - redraw(); -} - -} // GUI:: |