diff options
author | Bent Bisballe Nyeng <deva@aasimon.org> | 2013-04-19 22:57:02 +0200 |
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committer | Bent Bisballe Nyeng <deva@aasimon.org> | 2013-04-19 22:57:02 +0200 |
commit | abc0caf95536a4001615f863860a091d6bc55973 (patch) | |
tree | b3f79d1c92bc8e48df7d20375050808a945ca7e6 /plugingui/scrollbar.cc | |
parent | 615c1f1544cabbe7ed4b33a1bde10b1b2ab71d2e (diff) |
New listbox widgets and scrollbar.
Diffstat (limited to 'plugingui/scrollbar.cc')
-rw-r--r-- | plugingui/scrollbar.cc | 182 |
1 files changed, 182 insertions, 0 deletions
diff --git a/plugingui/scrollbar.cc b/plugingui/scrollbar.cc new file mode 100644 index 0000000..3fc3ac8 --- /dev/null +++ b/plugingui/scrollbar.cc @@ -0,0 +1,182 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/*************************************************************************** + * scrollbar.cc + * + * Sun Apr 14 12:54:58 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 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 "scrollbar.h" + +#include <hugin.hpp> + +#include "painter.h" + +GUI::ScrollBar::ScrollBar(GUI::Widget *parent) + : GUI::Widget(parent), bg_img(":widget_c.png") +{ + handler = NULL; + ptr = NULL; +} + +void GUI::ScrollBar::setRange(int r) +{ + DEBUG(scroll, "%d\n", r); + ran = r; + setValue(value()); + repaintEvent(NULL); +} + +int GUI::ScrollBar::range() +{ + return ran; +} + +void GUI::ScrollBar::setMaximum(int m) +{ + DEBUG(scroll, "%d\n", m); + max = m; + setValue(value()); + repaintEvent(NULL); +} + +int GUI::ScrollBar::maximum() +{ + return max; +} + +void GUI::ScrollBar::setValue(int value) +{ + val = value; + if(val > max - ran) val = max - ran; + if(val < 0) val = 0; + + if(handler) handler(ptr); + + repaintEvent(NULL); +} + +int GUI::ScrollBar::value() +{ + return val; +} + +void GUI::ScrollBar::registerValueChangeHandler(void (*handler)(void *), + void *ptr) +{ + this->handler = handler; + this->ptr = ptr; +} + +static void drawArrow(GUI::Painter &p, int x, int y, int w, int h) +{ + if(h < 0) y -= h; + + p.drawLine(x, y, x+(w/2), y+h); + p.drawLine(x+(w/2), y+h, x+w, y); + + y++; + p.drawLine(x, y, x+(w/2), y+h); + p.drawLine(x+(w/2), y+h, x+w, y); +} + +void GUI::ScrollBar::repaintEvent(RepaintEvent *e) +{ + GUI::Painter p(this); + + p.clear(); + + p.drawImageStretched(0, 0, &bg_img, width(), height()); + + p.setColour(GUI::Colour(183.0/255.0, 219.0/255.0 , 255.0/255.0, 1)); + if(!max) return; + + { + int h = height() - 2 * width() - 3; + int offset = width() + 2; + + int y_val1 = (val * h) / max; + int y_val2 = ((val + ran) * h) / max; + + p.drawFilledRectangle(2, y_val1 + offset, width() - 1, y_val2 + offset); + } + + p.drawLine(0, 0, 0, height()); + + drawArrow(p, width()/4, width()/4, width()/2, -1 * (width()/3)); + p.drawLine(0, width(), width(), width()); + + drawArrow(p, width()/4, height() - width() + width()/4, width()/2, width()/3); + p.drawLine(0, height() - width(), width(), height() - width()); +} + +void GUI::ScrollBar::scrollEvent(ScrollEvent *e) +{ + setValue(value() + e->delta); +} + +void GUI::ScrollBar::mouseMoveEvent(MouseMoveEvent *e) +{ + if(!dragging) return; + + float delta = yoffset - e->y; + + int h = height() - 2 * width() - 3; + delta /= (float)h / (float)max; + setValue(value_offset - delta); +} + +void GUI::ScrollBar::buttonEvent(ButtonEvent *e) +{ + if(e->y < (int)width() && e->y > 0) { + if(e->direction == -1) setValue(value() - 1); + return; + } + + if(e->y > (int)height() - (int)width() && e->y < (int)height()) { + if(e->direction == -1) setValue(value() + 1); + return; + } + + if(e->direction == 1) { + yoffset = e->y; + value_offset = value(); + } + + dragging = (e->direction == 1); +} + +#ifdef TEST_SCROLLBAR +//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_SCROLLBAR*/ |