From: Joel Holdsworth Date: Fri, 7 Sep 2012 14:24:33 +0000 (+0100) Subject: Moved view classes into the pv::view:: namespace X-Git-Tag: pulseview-0.1.0~310 X-Git-Url: https://sigrok.org/gitaction?a=commitdiff_plain;h=cdf7bea7f0eead18de2616cbfd8697ac0fffb59b;p=pulseview.git Moved view classes into the pv::view:: namespace --- diff --git a/CMakeLists.txt b/CMakeLists.txt index 5fc8b6a2..db0d5f9b 100644 --- a/CMakeLists.txt +++ b/CMakeLists.txt @@ -26,8 +26,8 @@ set(pulseview_SOURCES signaldata.cpp sigsession.cpp signal.cpp - sigview.cpp - sigviewport.cpp + pv/view/view.cpp + pv/view/viewport.cpp ) set(pulseview_HEADERS @@ -35,8 +35,8 @@ set(pulseview_HEADERS mainwindow.h samplingbar.h sigsession.h - sigview.h - sigviewport.h + pv/view/view.h + pv/view/viewport.h ) set(pulseview_FORMS diff --git a/mainwindow.cpp b/mainwindow.cpp index 54cc39ec..21839343 100644 --- a/mainwindow.cpp +++ b/mainwindow.cpp @@ -35,7 +35,7 @@ extern "C" { #include "about.h" #include "mainwindow.h" #include "samplingbar.h" -#include "sigview.h" +#include "pv/view/view.h" extern "C" { /* __STDC_FORMAT_MACROS is required for PRIu64 and friends (in C++). */ @@ -138,7 +138,7 @@ void MainWindow::setup_ui() _menu_view->setTitle(QApplication::translate("MainWindow", "&View", 0, QApplication::UnicodeUTF8)); _menu_help->setTitle(QApplication::translate("MainWindow", "&Help", 0, QApplication::UnicodeUTF8)); - _view = new SigView(_session, this); + _view = new pv::view::View(_session, this); _vertical_layout->addWidget(_view); } diff --git a/mainwindow.h b/mainwindow.h index 6a1e52ca..45f0b572 100644 --- a/mainwindow.h +++ b/mainwindow.h @@ -26,7 +26,12 @@ #include "sigsession.h" class SamplingBar; -class SigView; + +namespace pv { +namespace view { +class View; +} +} namespace Ui { class MainWindow; @@ -53,7 +58,7 @@ private: private: SigSession _session; - SigView *_view; + pv::view::View *_view; QAction *_action_open; QAction *_action_view_zoom_in; diff --git a/pv/view/view.cpp b/pv/view/view.cpp new file mode 100644 index 00000000..49b96ba3 --- /dev/null +++ b/pv/view/view.cpp @@ -0,0 +1,185 @@ +/* + * This file is part of the sigrok project. + * + * Copyright (C) 2012 Joel Holdsworth + * + * This program 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. + * + * This program 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 this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include +#include + +#include + +#include +#include + +#include "view.h" +#include "viewport.h" + +#include "../../logicdata.h" +#include "../../logicdatasnapshot.h" +#include "../../sigsession.h" + +using namespace boost; +using namespace std; + +namespace pv { +namespace view { + +const double View::MaxScale = 1e9; +const double View::MinScale = 1e-15; + +const int View::LabelMarginWidth = 70; +const int View::RulerHeight = 30; + +View::View(SigSession &session, QWidget *parent) : + QAbstractScrollArea(parent), + _session(session), + _viewport(new Viewport(*this)), + _data_length(0), + _scale(1e-6), + _offset(0), + _v_offset(0) +{ + connect(horizontalScrollBar(), SIGNAL(valueChanged(int)), + this, SLOT(h_scroll_value_changed(int))); + connect(verticalScrollBar(), SIGNAL(valueChanged(int)), + this, SLOT(v_scroll_value_changed(int))); + connect(&_session, SIGNAL(data_updated()), + this, SLOT(data_updated())); + setViewport(_viewport); +} + +double View::scale() const +{ + return _scale; +} + +double View::offset() const +{ + return _offset; +} + +int View::v_offset() const +{ + return _v_offset; +} + +void View::zoom(double steps) +{ + zoom(steps, (width() - LabelMarginWidth) / 2); +} + +void View::set_scale_offset(double scale, double offset) +{ + _scale = scale; + _offset = offset; + update_scroll(); + _viewport->update(); +} + +void View::update_scroll() +{ + assert(_viewport); + + const QSize areaSize = _viewport->size(); + + // Set the horizontal scroll bar + double length = 0, offset = 0; + const shared_ptr sig_data = _session.get_data(); + if(sig_data) { + length = _data_length / + (sig_data->get_samplerate() * _scale); + offset = _offset / _scale; + } + + horizontalScrollBar()->setPageStep(areaSize.width()); + horizontalScrollBar()->setRange(0, + max((int)(length - areaSize.width()), 0)); + horizontalScrollBar()->setSliderPosition(offset); + + // Set the vertical scrollbar + verticalScrollBar()->setPageStep(areaSize.height()); + verticalScrollBar()->setRange(0, + _viewport->get_total_height() - areaSize.height()); +} + +void View::zoom(double steps, int offset) +{ + const double cursor_offset = _offset + _scale * offset; + _scale *= pow(3.0/2.0, -steps); + _scale = max(min(_scale, MaxScale), MinScale); + _offset = cursor_offset - _scale * offset; + _viewport->update(); + update_scroll(); +} + +bool View::viewportEvent(QEvent *e) +{ + switch(e->type()) { + case QEvent::Paint: + case QEvent::MouseButtonPress: + case QEvent::MouseButtonRelease: + case QEvent::MouseButtonDblClick: + case QEvent::MouseMove: + case QEvent::Wheel: + return false; + + default: + return QAbstractScrollArea::viewportEvent(e); + } +} + +void View::resizeEvent(QResizeEvent *e) +{ + update_scroll(); +} + +void View::h_scroll_value_changed(int value) +{ + _offset = _scale * value; + _viewport->update(); +} + +void View::v_scroll_value_changed(int value) +{ + _v_offset = value; + _viewport->update(); +} + +void View::data_updated() +{ + // Get the new data length + _data_length = 0; + shared_ptr sig_data = _session.get_data(); + if(sig_data) { + deque< shared_ptr > &snapshots = + sig_data->get_snapshots(); + BOOST_FOREACH(shared_ptr s, snapshots) + if(s) + _data_length = max(_data_length, + s->get_sample_count()); + } + + // Update the scroll bars + update_scroll(); + + // Repaint the view + _viewport->update(); +} + +} // namespace view +} // namespace pv diff --git a/pv/view/view.h b/pv/view/view.h new file mode 100644 index 00000000..3c76c8ee --- /dev/null +++ b/pv/view/view.h @@ -0,0 +1,90 @@ +/* + * This file is part of the sigrok project. + * + * Copyright (C) 2012 Joel Holdsworth + * + * This program 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. + * + * This program 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 this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef PV_VIEW_VIEW_H +#define PV_VIEW_VIEW_H + +#include + +#include + +class SigSession; + +namespace pv { +namespace view { + +class Viewport; + +class View : public QAbstractScrollArea { + Q_OBJECT + +private: + static const double MaxScale; + static const double MinScale; + + static const int LabelMarginWidth; + static const int RulerHeight; + +public: + explicit View(SigSession &session, QWidget *parent = 0); + + double scale() const; + double offset() const; + int v_offset() const; + + void zoom(double steps); + + void set_scale_offset(double scale, double offset); + +private: + void update_scroll(); + + void zoom(double steps, int offset); + +private: + bool viewportEvent(QEvent *e); + + void resizeEvent(QResizeEvent *e); + +private slots: + void h_scroll_value_changed(int value); + void v_scroll_value_changed(int value); + + void data_updated(); + +private: + SigSession &_session; + + Viewport *_viewport; + + uint64_t _data_length; + + double _scale; + double _offset; + + int _v_offset; + + friend class Viewport; +}; + +} // namespace view +} // namespace pv + +#endif // PV_VIEW_VIEW_H diff --git a/pv/view/viewport.cpp b/pv/view/viewport.cpp new file mode 100644 index 00000000..572e38b1 --- /dev/null +++ b/pv/view/viewport.cpp @@ -0,0 +1,251 @@ +/* + * This file is part of the sigrok project. + * + * Copyright (C) 2012 Joel Holdsworth + * + * This program 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. + * + * This program 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 this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include "view.h" +#include "viewport.h" + +#include "../../sigsession.h" +#include "../../signal.h" + +#include "../../extdef.h" + +#include +#include + +#include + +#include + +using namespace boost; +using namespace std; + +namespace pv { +namespace view { + +const int Viewport::SignalHeight = 50; + +const int Viewport::MinorTickSubdivision = 4; +const int Viewport::ScaleUnits[3] = {1, 2, 5}; + +const QString Viewport::SIPrefixes[9] = + {"f", "p", "n", QChar(0x03BC), "m", "", "k", "M", "G"}; +const int Viewport::FirstSIPrefixPower = -15; + +Viewport::Viewport(View &parent) : + QGLWidget(&parent), + _view(parent) +{ + setMouseTracking(true); + setAutoFillBackground(false); +} + +int Viewport::get_total_height() const +{ + int height = 0; + BOOST_FOREACH(const shared_ptr s, + _view._session.get_signals()) { + assert(s); + height += SignalHeight; + } + + return height; +} + +void Viewport::initializeGL() +{ +} + +void Viewport::resizeGL(int width, int height) +{ + setup_viewport(width, height); +} + +void Viewport::paintEvent(QPaintEvent *event) +{ + int offset; + + const vector< shared_ptr > &sigs = + _view._session.get_signals(); + + // Prepare for OpenGL rendering + makeCurrent(); + glMatrixMode(GL_MODELVIEW); + glPushMatrix(); + + setup_viewport(width(), height()); + + qglClearColor(Qt::white); + glClear(GL_COLOR_BUFFER_BIT); + + // Plot the signal + glEnable(GL_SCISSOR_TEST); + glScissor(View::LabelMarginWidth, 0, width(), height()); + offset = View::RulerHeight - _view.v_offset(); + BOOST_FOREACH(const shared_ptr s, sigs) + { + assert(s); + + const QRect signal_rect(View::LabelMarginWidth, offset, + width() - View::LabelMarginWidth, SignalHeight); + + s->paint(*this, signal_rect, _view.scale(), _view.offset()); + + offset += SignalHeight; + } + + glDisable(GL_SCISSOR_TEST); + + // Prepare for QPainter rendering + glMatrixMode(GL_MODELVIEW); + glPopMatrix(); + + QPainter painter(this); + painter.setRenderHint(QPainter::Antialiasing); + + // Paint the labels + offset = View::RulerHeight - _view.v_offset(); + BOOST_FOREACH(const shared_ptr s, sigs) + { + assert(s); + + const QRect label_rect(0, offset, + View::LabelMarginWidth, SignalHeight); + s->paint_label(painter, label_rect); + + offset += SignalHeight; + } + + // Paint the ruler + paint_ruler(painter); + + painter.end(); +} + +void Viewport::mousePressEvent(QMouseEvent *event) +{ + assert(event); + + _mouse_down_point = event->pos(); + _mouse_down_offset = _view.offset(); +} + +void Viewport::mouseMoveEvent(QMouseEvent *event) +{ + assert(event); + + if(event->buttons() & Qt::LeftButton) + { + _view.set_scale_offset(_view.scale(), + _mouse_down_offset + + (_mouse_down_point - event->pos()).x() * + _view.scale()); + } +} + +void Viewport::mouseReleaseEvent(QMouseEvent *event) +{ + assert(event); +} + +void Viewport::wheelEvent(QWheelEvent *event) +{ + assert(event); + _view.zoom(event->delta() / 120, event->x() - + View::LabelMarginWidth); +} + +void Viewport::setup_viewport(int width, int height) +{ + glViewport(0, 0, (GLint)width, (GLint)height); + glMatrixMode(GL_PROJECTION); + glLoadIdentity(); + glOrtho(0, width, height, 0, -1, 1); + glMatrixMode(GL_MODELVIEW); +} + +void Viewport::paint_ruler(QPainter &p) +{ + const double MinSpacing = 80; + + const double min_period = _view.scale() * MinSpacing; + + const int order = (int)floorf(log10f(min_period)); + const double order_decimal = pow(10, order); + + int unit = 0; + double tick_period = 0.0f; + + do + { + tick_period = order_decimal * ScaleUnits[unit++]; + } while(tick_period < min_period && unit < countof(ScaleUnits)); + + const int prefix = (order - FirstSIPrefixPower) / 3; + assert(prefix >= 0); + assert(prefix < countof(SIPrefixes)); + + const int text_height = p.boundingRect(0, 0, INT_MAX, INT_MAX, + Qt::AlignLeft | Qt::AlignTop, "8").height(); + + // Draw the tick marks + p.setPen(Qt::black); + + const double minor_tick_period = tick_period / MinorTickSubdivision; + const double first_major_division = + floor(_view.offset() / tick_period); + const double first_minor_division = + ceil(_view.offset() / minor_tick_period); + const double t0 = first_major_division * tick_period; + + int division = (int)round(first_minor_division - + first_major_division * MinorTickSubdivision); + while(1) + { + const double t = t0 + division * minor_tick_period; + const double x = (t - _view.offset()) / _view.scale() + + View::LabelMarginWidth; + + if(x >= width()) + break; + + if(division % MinorTickSubdivision == 0) + { + // Draw a major tick + QString s; + QTextStream ts(&s); + ts << (t / order_decimal) << SIPrefixes[prefix] << "s"; + p.drawText(x, 0, 0, text_height, Qt::AlignCenter | Qt::AlignTop | + Qt::TextDontClip, s); + p.drawLine(x, text_height, x, View::RulerHeight); + } + else + { + // Draw a minor tick + p.drawLine(x, + (text_height + View::RulerHeight) / 2, x, + View::RulerHeight); + } + + division++; + } +} + +} // namespace view +} // namespace pv diff --git a/pv/view/viewport.h b/pv/view/viewport.h new file mode 100644 index 00000000..46bf2733 --- /dev/null +++ b/pv/view/viewport.h @@ -0,0 +1,82 @@ +/* + * This file is part of the sigrok project. + * + * Copyright (C) 2012 Joel Holdsworth + * + * This program 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. + * + * This program 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 this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef PV_VIEW_VIEWPORT_H +#define PV_VIEW_VIEWPORT_H + +#include +#include + +class QPainter; +class QPaintEvent; +class SigSession; + +namespace pv { +namespace view { + +class View; + +class Viewport : public QGLWidget +{ + Q_OBJECT + +private: + static const int SignalHeight; + + static const int MinorTickSubdivision; + static const int ScaleUnits[3]; + + static const QString SIPrefixes[9]; + static const int FirstSIPrefixPower; + +public: + explicit Viewport(View &parent); + + int get_total_height() const; + +protected: + void initializeGL(); + + void resizeGL(int width, int height); + + void paintEvent(QPaintEvent *event); + +private: + void mousePressEvent(QMouseEvent *event); + void mouseMoveEvent(QMouseEvent *event); + void mouseReleaseEvent(QMouseEvent *event); + void wheelEvent(QWheelEvent *event); + +private: + void setup_viewport(int width, int height); + + void paint_ruler(QPainter &p); + +private: + View &_view; + + QPoint _mouse_down_point; + double _mouse_down_offset; +}; + +} // namespace view +} // namespace pv + +#endif // PV_VIEW_VIEWPORT_H diff --git a/sigview.cpp b/sigview.cpp deleted file mode 100644 index 4f2436cc..00000000 --- a/sigview.cpp +++ /dev/null @@ -1,179 +0,0 @@ -/* - * This file is part of the sigrok project. - * - * Copyright (C) 2012 Joel Holdsworth - * - * This program 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. - * - * This program 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 this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ - -#include -#include - -#include - -#include -#include - -#include "sigview.h" - -#include "logicdata.h" -#include "logicdatasnapshot.h" -#include "sigsession.h" -#include "sigviewport.h" - -using namespace boost; -using namespace std; - -const double SigView::MaxScale = 1e9; -const double SigView::MinScale = 1e-15; - -const int SigView::LabelMarginWidth = 70; -const int SigView::RulerHeight = 30; - -SigView::SigView(SigSession &session, QWidget *parent) : - QAbstractScrollArea(parent), - _session(session), - _viewport(new SigViewport(*this)), - _data_length(0), - _scale(1e-6), - _offset(0), - _v_offset(0) -{ - connect(horizontalScrollBar(), SIGNAL(valueChanged(int)), - this, SLOT(h_scroll_value_changed(int))); - connect(verticalScrollBar(), SIGNAL(valueChanged(int)), - this, SLOT(v_scroll_value_changed(int))); - connect(&_session, SIGNAL(data_updated()), - this, SLOT(data_updated())); - setViewport(_viewport); -} - -double SigView::scale() const -{ - return _scale; -} - -double SigView::offset() const -{ - return _offset; -} - -int SigView::v_offset() const -{ - return _v_offset; -} - -void SigView::zoom(double steps) -{ - zoom(steps, (width() - LabelMarginWidth) / 2); -} - -void SigView::set_scale_offset(double scale, double offset) -{ - _scale = scale; - _offset = offset; - update_scroll(); - _viewport->update(); -} - -void SigView::update_scroll() -{ - assert(_viewport); - - const QSize areaSize = _viewport->size(); - - // Set the horizontal scroll bar - double length = 0, offset = 0; - const shared_ptr sig_data = _session.get_data(); - if(sig_data) { - length = _data_length / - (sig_data->get_samplerate() * _scale); - offset = _offset / _scale; - } - - horizontalScrollBar()->setPageStep(areaSize.width()); - horizontalScrollBar()->setRange(0, - max((int)(length - areaSize.width()), 0)); - horizontalScrollBar()->setSliderPosition(offset); - - // Set the vertical scrollbar - verticalScrollBar()->setPageStep(areaSize.height()); - verticalScrollBar()->setRange(0, - _viewport->get_total_height() - areaSize.height()); -} - -void SigView::zoom(double steps, int offset) -{ - const double cursor_offset = _offset + _scale * offset; - _scale *= pow(3.0/2.0, -steps); - _scale = max(min(_scale, MaxScale), MinScale); - _offset = cursor_offset - _scale * offset; - _viewport->update(); - update_scroll(); -} - -bool SigView::viewportEvent(QEvent *e) -{ - switch(e->type()) { - case QEvent::Paint: - case QEvent::MouseButtonPress: - case QEvent::MouseButtonRelease: - case QEvent::MouseButtonDblClick: - case QEvent::MouseMove: - case QEvent::Wheel: - return false; - - default: - return QAbstractScrollArea::viewportEvent(e); - } -} - -void SigView::resizeEvent(QResizeEvent *e) -{ - update_scroll(); -} - -void SigView::h_scroll_value_changed(int value) -{ - _offset = _scale * value; - _viewport->update(); -} - -void SigView::v_scroll_value_changed(int value) -{ - _v_offset = value; - _viewport->update(); -} - -void SigView::data_updated() -{ - // Get the new data length - _data_length = 0; - shared_ptr sig_data = _session.get_data(); - if(sig_data) { - deque< shared_ptr > &snapshots = - sig_data->get_snapshots(); - BOOST_FOREACH(shared_ptr s, snapshots) - if(s) - _data_length = max(_data_length, - s->get_sample_count()); - } - - // Update the scroll bars - update_scroll(); - - // Repaint the view - _viewport->update(); -} diff --git a/sigview.h b/sigview.h deleted file mode 100644 index cc7b78af..00000000 --- a/sigview.h +++ /dev/null @@ -1,83 +0,0 @@ -/* - * This file is part of the sigrok project. - * - * Copyright (C) 2012 Joel Holdsworth - * - * This program 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. - * - * This program 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 this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ - -#ifndef SIGVIEW_H -#define SIGVIEW_H - -#include - -#include - -class SigSession; -class SigViewport; - -class SigView : public QAbstractScrollArea { - Q_OBJECT - -private: - static const double MaxScale; - static const double MinScale; - - static const int LabelMarginWidth; - static const int RulerHeight; - -public: - explicit SigView(SigSession &session, QWidget *parent = 0); - - double scale() const; - double offset() const; - int v_offset() const; - - void zoom(double steps); - - void set_scale_offset(double scale, double offset); - -private: - void update_scroll(); - - void zoom(double steps, int offset); - -private: - bool viewportEvent(QEvent *e); - - void resizeEvent(QResizeEvent *e); - -private slots: - void h_scroll_value_changed(int value); - void v_scroll_value_changed(int value); - - void data_updated(); - -private: - SigSession &_session; - - SigViewport *_viewport; - - uint64_t _data_length; - - double _scale; - double _offset; - - int _v_offset; - - friend class SigViewport; -}; - -#endif // SIGVIEW_H diff --git a/sigviewport.cpp b/sigviewport.cpp deleted file mode 100644 index 6bb0d00e..00000000 --- a/sigviewport.cpp +++ /dev/null @@ -1,245 +0,0 @@ -/* - * This file is part of the sigrok project. - * - * Copyright (C) 2012 Joel Holdsworth - * - * This program 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. - * - * This program 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 this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ - -#include "sigviewport.h" - -#include "sigsession.h" -#include "signal.h" -#include "sigview.h" - -#include "extdef.h" - -#include -#include - -#include - -#include - -using namespace boost; -using namespace std; - -const int SigViewport::SignalHeight = 50; - -const int SigViewport::MinorTickSubdivision = 4; -const int SigViewport::ScaleUnits[3] = {1, 2, 5}; - -const QString SigViewport::SIPrefixes[9] = - {"f", "p", "n", QChar(0x03BC), "m", "", "k", "M", "G"}; -const int SigViewport::FirstSIPrefixPower = -15; - -SigViewport::SigViewport(SigView &parent) : - QGLWidget(&parent), - _view(parent) -{ - setMouseTracking(true); - setAutoFillBackground(false); -} - -int SigViewport::get_total_height() const -{ - int height = 0; - BOOST_FOREACH(const shared_ptr s, - _view._session.get_signals()) { - assert(s); - height += SignalHeight; - } - - return height; -} - -void SigViewport::initializeGL() -{ -} - -void SigViewport::resizeGL(int width, int height) -{ - setup_viewport(width, height); -} - -void SigViewport::paintEvent(QPaintEvent *event) -{ - int offset; - - const vector< shared_ptr > &sigs = - _view._session.get_signals(); - - // Prepare for OpenGL rendering - makeCurrent(); - glMatrixMode(GL_MODELVIEW); - glPushMatrix(); - - setup_viewport(width(), height()); - - qglClearColor(Qt::white); - glClear(GL_COLOR_BUFFER_BIT); - - // Plot the signal - glEnable(GL_SCISSOR_TEST); - glScissor(SigView::LabelMarginWidth, 0, width(), height()); - offset = SigView::RulerHeight - _view.v_offset(); - BOOST_FOREACH(const shared_ptr s, sigs) - { - assert(s); - - const QRect signal_rect(SigView::LabelMarginWidth, offset, - width() - SigView::LabelMarginWidth, SignalHeight); - - s->paint(*this, signal_rect, _view.scale(), _view.offset()); - - offset += SignalHeight; - } - - glDisable(GL_SCISSOR_TEST); - - // Prepare for QPainter rendering - glMatrixMode(GL_MODELVIEW); - glPopMatrix(); - - QPainter painter(this); - painter.setRenderHint(QPainter::Antialiasing); - - // Paint the labels - offset = SigView::RulerHeight - _view.v_offset(); - BOOST_FOREACH(const shared_ptr s, sigs) - { - assert(s); - - const QRect label_rect(0, offset, - SigView::LabelMarginWidth, SignalHeight); - s->paint_label(painter, label_rect); - - offset += SignalHeight; - } - - // Paint the ruler - paint_ruler(painter); - - painter.end(); -} - -void SigViewport::mousePressEvent(QMouseEvent *event) -{ - assert(event); - - _mouse_down_point = event->pos(); - _mouse_down_offset = _view.offset(); -} - -void SigViewport::mouseMoveEvent(QMouseEvent *event) -{ - assert(event); - - if(event->buttons() & Qt::LeftButton) - { - _view.set_scale_offset(_view.scale(), - _mouse_down_offset + - (_mouse_down_point - event->pos()).x() * - _view.scale()); - } -} - -void SigViewport::mouseReleaseEvent(QMouseEvent *event) -{ - assert(event); -} - -void SigViewport::wheelEvent(QWheelEvent *event) -{ - assert(event); - _view.zoom(event->delta() / 120, event->x() - - SigView::LabelMarginWidth); -} - -void SigViewport::setup_viewport(int width, int height) -{ - glViewport(0, 0, (GLint)width, (GLint)height); - glMatrixMode(GL_PROJECTION); - glLoadIdentity(); - glOrtho(0, width, height, 0, -1, 1); - glMatrixMode(GL_MODELVIEW); -} - -void SigViewport::paint_ruler(QPainter &p) -{ - const double MinSpacing = 80; - - const double min_period = _view.scale() * MinSpacing; - - const int order = (int)floorf(log10f(min_period)); - const double order_decimal = pow(10, order); - - int unit = 0; - double tick_period = 0.0f; - - do - { - tick_period = order_decimal * ScaleUnits[unit++]; - } while(tick_period < min_period && unit < countof(ScaleUnits)); - - const int prefix = (order - FirstSIPrefixPower) / 3; - assert(prefix >= 0); - assert(prefix < countof(SIPrefixes)); - - const int text_height = p.boundingRect(0, 0, INT_MAX, INT_MAX, - Qt::AlignLeft | Qt::AlignTop, "8").height(); - - // Draw the tick marks - p.setPen(Qt::black); - - const double minor_tick_period = tick_period / MinorTickSubdivision; - const double first_major_division = - floor(_view.offset() / tick_period); - const double first_minor_division = - ceil(_view.offset() / minor_tick_period); - const double t0 = first_major_division * tick_period; - - int division = (int)round(first_minor_division - - first_major_division * MinorTickSubdivision); - while(1) - { - const double t = t0 + division * minor_tick_period; - const double x = (t - _view.offset()) / _view.scale() + - SigView::LabelMarginWidth; - - if(x >= width()) - break; - - if(division % MinorTickSubdivision == 0) - { - // Draw a major tick - QString s; - QTextStream ts(&s); - ts << (t / order_decimal) << SIPrefixes[prefix] << "s"; - p.drawText(x, 0, 0, text_height, Qt::AlignCenter | Qt::AlignTop | - Qt::TextDontClip, s); - p.drawLine(x, text_height, x, SigView::RulerHeight); - } - else - { - // Draw a minor tick - p.drawLine(x, - (text_height + SigView::RulerHeight) / 2, x, - SigView::RulerHeight); - } - - division++; - } -} diff --git a/sigviewport.h b/sigviewport.h deleted file mode 100644 index 12f6b7c5..00000000 --- a/sigviewport.h +++ /dev/null @@ -1,75 +0,0 @@ -/* - * This file is part of the sigrok project. - * - * Copyright (C) 2012 Joel Holdsworth - * - * This program 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. - * - * This program 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 this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ - -#ifndef SIGVIEWPORT_H -#define SIGVIEWPORT_H - -#include -#include - -class QPainter; -class QPaintEvent; -class SigSession; -class SigView; - -class SigViewport : public QGLWidget -{ - Q_OBJECT - -private: - static const int SignalHeight; - - static const int MinorTickSubdivision; - static const int ScaleUnits[3]; - - static const QString SIPrefixes[9]; - static const int FirstSIPrefixPower; - -public: - explicit SigViewport(SigView &parent); - - int get_total_height() const; - -protected: - void initializeGL(); - - void resizeGL(int width, int height); - - void paintEvent(QPaintEvent *event); - -private: - void mousePressEvent(QMouseEvent *event); - void mouseMoveEvent(QMouseEvent *event); - void mouseReleaseEvent(QMouseEvent *event); - void wheelEvent(QWheelEvent *event); - -private: - void setup_viewport(int width, int height); - - void paint_ruler(QPainter &p); - -private: - SigView &_view; - - QPoint _mouse_down_point; - double _mouse_down_offset; -}; - -#endif // SIGVIEWPORT_H