diff options
author | Bent Bisballe Nyeng <deva@aasimon.org> | 2013-03-06 09:30:52 +0100 |
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committer | Bent Bisballe Nyeng <deva@aasimon.org> | 2013-03-06 09:30:52 +0100 |
commit | a0b7282b31ed31051ee98bf16e8704d5599e5461 (patch) | |
tree | 49798ac70adbac0e065781833f045bab8a65bb0b /plugingui/knob.cc | |
parent | dff2ff5b636d9d7007bf8589204e6a7138ee4004 (diff) |
Major GUI workover. Hilights: A new filebrowser and new knob widget.
Diffstat (limited to 'plugingui/knob.cc')
-rw-r--r-- | plugingui/knob.cc | 167 |
1 files changed, 167 insertions, 0 deletions
diff --git a/plugingui/knob.cc b/plugingui/knob.cc new file mode 100644 index 0000000..75a7278 --- /dev/null +++ b/plugingui/knob.cc @@ -0,0 +1,167 @@ +/* -*- 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 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 "knob.h" + +#include "painter.h" + +#include <hugin.hpp> +#include <stdio.h> +#include <math.h> + +GUI::Knob::Knob(Widget *parent) + : GUI::Widget(parent) +{ + state = up; + + val = 0.0; + maximum = 1.0; + minimum = 0.0; + mouse_offset_x = 0; + + handler = NULL; + ptr = NULL; +} + +void GUI::Knob::setValue(float v) +{ + val = v; + if(handler) handler(ptr); + repaintEvent(NULL); +} + +float GUI::Knob::value() +{ + return val; +} + +void GUI::Knob::registerClickHandler(void (*handler)(void *), void *ptr) +{ + this->handler = handler; + this->ptr = ptr; +} + +void GUI::Knob::mouseMoveEvent(MouseMoveEvent *e) +{ + if(state == down) { + /* + DEBUG(slider, "Knob::mouseMoveEvent(mouse_offset_x: %d, e->x: %d)\n", + mouse_offset_x, e->x); + */ + if(mouse_offset_x == (e->x + -1*e->y)) return; + + float dval = mouse_offset_x - (e->x + -1*e->y); + val -= dval / 300.0; + + if(val < 0) val = 0; + if(val > 1) val = 1; + + if(handler) handler(ptr); + repaintEvent(NULL); + + mouse_offset_x = e->x + -1*e->y; + } +} + +void GUI::Knob::buttonEvent(ButtonEvent *e) +{ + if(e->direction == 1) { + state = down; + mouse_offset_x = e->x + -1*e->y; + //val = maximum / (float)width() * (float)e->x; + if(handler) handler(ptr); + repaintEvent(NULL); + } + if(e->direction == -1) { + state = up; + mouse_offset_x = e->x + -1*e->y; + //val = maximum / (float)width() * (float)e->x; + repaintEvent(NULL); + clicked(); + if(handler) handler(ptr); + } +} + +void GUI::Knob::repaintEvent(GUI::RepaintEvent *e) +{ + // DEBUG(slider, "Knob::repaintEvent (%f)\n", val); + + Painter p(this); + + float alpha = 0.8; + + p.setColour(Colour(0, 0)); + p.drawFilledRectangle(0,0,width()-1,height()-1); + + if(hasKeyboardFocus()) { + p.setColour(Colour(0.6, alpha)); + } else { + p.setColour(Colour(0.5, alpha)); + } + + int radius = (width()>height()?height():width()) / 2; + int center_x = width() / 2; + int center_y = height() / 2; + + p.setColour(Colour(1, alpha)); + + char buf[64]; + sprintf(buf, "%.2f", val * maximum); + Font font; + p.drawText(center_x - font.textWidth(buf) / 2, + center_y + font.textHeight(buf) / 2, font, buf); + + p.setColour(Colour(0.5, 0.5, 1, alpha)); + + p.drawCircle(center_x, center_y, radius); + + double padval = val * 0.8 + 0.1; + double border_x = sin((-1 * padval + 1) * 2 * M_PI); + double border_y = cos((-1 * padval + 1) * 2 * M_PI); + + p.setColour(Colour(1, 0, 0, alpha)); + p.drawLine(border_x * (radius / 2) + center_x, + border_y * (radius / 2) + center_y, + border_x * radius + center_x, + border_y * radius + center_y); +} + +#ifdef TEST_KNOB +//Additional dependency files +//deps: +//Required cflags (autoconf vars may be used) +//cflags: +//Required link options (autoconf vars may be used) +//libs: +#include "test.h" + +TEST_BEGIN; + +// TODO: Put some testcode here (see test.h for usable macros). + +TEST_END; + +#endif/*TEST_KNOB*/ |