client/proxguiqt.cpp

   1 //-----------------------------------------------------------------------------
   2 // Copyright (C) 2009 Michael Gernoth <michael at gernoth.net>
   3 //
   4 // This code is licensed to you under the terms of the GNU GPL, version 2 or,
   5 // at your option, any later version. See the LICENSE.txt file for the text of
   6 // the license.
   7 //-----------------------------------------------------------------------------
   8 // GUI (QT)
   9 //-----------------------------------------------------------------------------
  10
  11 #include <iostream>
  12 #include <QPainterPath>
  13 #include <QBrush>
  14 #include <QPen>
  15 #include <QTimer>
  16 #include <QCloseEvent>
  17 #include <QMouseEvent>
  18 #include <QKeyEvent>
  19 #include <math.h>
  20 #include <limits.h>
  21 #include <stdio.h>
  22 #include "proxguiqt.h"
  23 #include "proxgui.h"
  24
  25 int GridOffset= 0;
  26 bool GridLocked= 0;
  27 int startMax;
  28 int PageWidth;
  29
  30 void ProxGuiQT::ShowGraphWindow(void)
  31 {
  32         emit ShowGraphWindowSignal();
  33 }
  34
  35 void ProxGuiQT::RepaintGraphWindow(void)
  36 {
  37         emit RepaintGraphWindowSignal();
  38 }
  39
  40 void ProxGuiQT::HideGraphWindow(void)
  41 {
  42         emit HideGraphWindowSignal();
  43 }
  44
  45 void ProxGuiQT::_ShowGraphWindow(void)
  46 {
  47         if(!plotapp)
  48                 return;
  49
  50         if (!plotwidget)
  51                 plotwidget = new ProxWidget();
  52
  53         plotwidget->show();
  54 }
  55
  56 void ProxGuiQT::_RepaintGraphWindow(void)
  57 {
  58         if (!plotapp || !plotwidget)
  59                 return;
  60
  61         plotwidget->update();
  62 }
  63
  64 void ProxGuiQT::_HideGraphWindow(void)
  65 {
  66         if (!plotapp || !plotwidget)
  67                 return;
  68
  69         plotwidget->hide();
  70 }
  71
  72 void ProxGuiQT::MainLoop()
  73 {
  74         plotapp = new QApplication(argc, argv);
  75
  76         connect(this, SIGNAL(ShowGraphWindowSignal()), this, SLOT(_ShowGraphWindow()));
  77         connect(this, SIGNAL(RepaintGraphWindowSignal()), this, SLOT(_RepaintGraphWindow()));
  78         connect(this, SIGNAL(HideGraphWindowSignal()), this, SLOT(_HideGraphWindow()));
  79
  80         plotapp->exec();
  81 }
  82
  83 ProxGuiQT::ProxGuiQT(int argc, char **argv) : plotapp(NULL), plotwidget(NULL),
  84         argc(argc), argv(argv)
  85 {
  86 }
  87
  88 ProxGuiQT::~ProxGuiQT(void)
  89 {
  90         if (plotwidget) {
  91                 delete plotwidget;
  92                 plotwidget = NULL;
  93         }
  94
  95         if (plotapp) {
  96                 plotapp->quit();
  97                 delete plotapp;
  98                 plotapp = NULL;
  99         }
 100 }
 101
 102 void ProxWidget::paintEvent(QPaintEvent *event)
 103 {
 104         QPainter painter(this);
 105         QPainterPath penPath, whitePath, greyPath, lightgreyPath, cursorAPath, cursorBPath;
 106         QRect r;
 107         QBrush brush(QColor(100, 255, 100));
 108         QPen pen(QColor(100, 255, 100));
 109
 110         painter.setFont(QFont("Arial", 10));
 111
 112         if(GraphStart < 0) {
 113                 GraphStart = 0;
 114         }
 115
 116         if (CursorAPos > GraphTraceLen)
 117                 CursorAPos= 0;
 118         if(CursorBPos > GraphTraceLen)
 119                 CursorBPos= 0;
 120
 121         r = rect();
 122
 123         painter.fillRect(r, QColor(0, 0, 0));
 124
 125         whitePath.moveTo(r.left() + 40, r.top());
 126         whitePath.lineTo(r.left() + 40, r.bottom());
 127
 128         int zeroHeight = r.top() + (r.bottom() - r.top()) / 2;
 129
 130         greyPath.moveTo(r.left(), zeroHeight);
 131         greyPath.lineTo(r.right(), zeroHeight);
 132         painter.setPen(QColor(100, 100, 100));
 133         painter.drawPath(greyPath);
 134
 135         PageWidth= (int)((r.right() - r.left() - 40) / GraphPixelsPerPoint);
 136
 137         // plot X and Y grid lines
 138         int i;
 139         if ((PlotGridX > 0) && ((PlotGridX * GraphPixelsPerPoint) > 1)) {
 140                 for(i = 40 + (GridOffset * GraphPixelsPerPoint); i < r.right(); i += (int)(PlotGridX * GraphPixelsPerPoint)) {
 141                         //SelectObject(hdc, GreyPenLite);
 142                         //MoveToEx(hdc, r.left + i, r.top, NULL);
 143                         //LineTo(hdc, r.left + i, r.bottom);
 144                         lightgreyPath.moveTo(r.left()+i,r.top());
 145                         lightgreyPath.lineTo(r.left()+i,r.bottom());
 146                         painter.drawPath(lightgreyPath);
 147                 }
 148         }
 149         if ((PlotGridY > 0) && ((PlotGridY * GraphPixelsPerPoint) > 1)){
 150                 for(i = 0; i < ((r.top() + r.bottom())>>1); i += (int)(PlotGridY * GraphPixelsPerPoint)) {
 151                         lightgreyPath.moveTo(r.left() + 40,zeroHeight + i);
 152                         lightgreyPath.lineTo(r.right(),zeroHeight + i);
 153                         painter.drawPath(lightgreyPath);
 154                         lightgreyPath.moveTo(r.left() + 40,zeroHeight - i);
 155                         lightgreyPath.lineTo(r.right(),zeroHeight - i);
 156                         painter.drawPath(lightgreyPath);
 157                 }
 158         }
 159
 160         startMax = (GraphTraceLen - (int)((r.right() - r.left() - 40) / GraphPixelsPerPoint));
 161         if(startMax < 0) {
 162                 startMax = 0;
 163         }
 164         if(GraphStart > startMax) {
 165                 GraphStart = startMax;
 166         }
 167
 168         int absYMax = 1;
 169
 170         for(i = GraphStart; ; i++) {
 171                 if(i >= GraphTraceLen) {
 172                         break;
 173                 }
 174                 if(fabs((double)GraphBuffer[i]) > absYMax) {
 175                         absYMax = (int)fabs((double)GraphBuffer[i]);
 176                 }
 177                 int x = 40 + (int)((i - GraphStart)*GraphPixelsPerPoint);
 178                 if(x > r.right()) {
 179                         break;
 180                 }
 181         }
 182
 183         absYMax = (int)(absYMax*1.2 + 1);
 184
 185         // number of points that will be plotted
 186         int span = (int)((r.right() - r.left()) / GraphPixelsPerPoint);
 187         // one label every 100 pixels, let us say
 188         int labels = (r.right() - r.left() - 40) / 100;
 189         if(labels <= 0) labels = 1;
 190         int pointsPerLabel = span / labels;
 191         if(pointsPerLabel <= 0) pointsPerLabel = 1;
 192
 193         int yMin = INT_MAX;
 194         int yMax = INT_MIN;
 195         int yMean = 0;
 196         int n = 0;
 197
 198         for(i = GraphStart; ; i++) {
 199                 if(i >= GraphTraceLen) {
 200                         break;
 201                 }
 202                 int x = 40 + (int)((i - GraphStart)*GraphPixelsPerPoint);
 203                 if(x > r.right() + GraphPixelsPerPoint) {
 204                         break;
 205                 }
 206
 207                 int y = GraphBuffer[i];
 208                 if(y < yMin) {
 209                         yMin = y;
 210                 }
 211                 if(y > yMax) {
 212                         yMax = y;
 213                 }
 214                 yMean += y;
 215                 n++;
 216
 217                 y = (y * (r.top() - r.bottom()) / (2*absYMax)) + zeroHeight;
 218                 if(i == GraphStart) {
 219                         penPath.moveTo(x, y);
 220                 } else {
 221                         penPath.lineTo(x, y);
 222                 }
 223
 224                 if(GraphPixelsPerPoint > 10) {
 225                         QRect f(QPoint(x - 3, y - 3),QPoint(x + 3, y + 3));
 226                         painter.fillRect(f, brush);
 227                 }
 228
 229                 if(((i - GraphStart) % pointsPerLabel == 0) && i != GraphStart) {
 230                         whitePath.moveTo(x, zeroHeight - 3);
 231                         whitePath.lineTo(x, zeroHeight + 3);
 232
 233                         char str[100];
 234                         sprintf(str, "+%d", (i - GraphStart));
 235
 236                         painter.setPen(QColor(255, 255, 255));
 237                         QRect size;
 238                         QFontMetrics metrics(painter.font());
 239                         size = metrics.boundingRect(str);
 240                         painter.drawText(x - (size.right() - size.left()), zeroHeight + 9, str);
 241
 242                         penPath.moveTo(x,y);
 243                 }
 244
 245                 if(i == CursorAPos || i == CursorBPos) {
 246                         QPainterPath *cursorPath;
 247
 248                         if(i == CursorAPos) {
 249                                 cursorPath = &cursorAPath;
 250                         } else {
 251                                 cursorPath = &cursorBPath;
 252                         }
 253                         cursorPath->moveTo(x, r.top());
 254                         cursorPath->lineTo(x, r.bottom());
 255                         penPath.moveTo(x, y);
 256                 }
 257         }
 258
 259         if(n != 0) {
 260                 yMean /= n;
 261         }
 262
 263         painter.setPen(QColor(255, 255, 255));
 264         painter.drawPath(whitePath);
 265         painter.setPen(pen);
 266         painter.drawPath(penPath);
 267         painter.setPen(QColor(255, 255, 0));
 268         painter.drawPath(cursorAPath);
 269         painter.setPen(QColor(255, 0, 255));
 270         painter.drawPath(cursorBPath);
 271
 272         char str[200];
 273         sprintf(str, "@%d   max=%d min=%d mean=%d n=%d/%d    dt=%d [%.3f] zoom=%.3f CursorA=%d [%d] CursorB=%d [%d]    GridX=%d GridY=%d (%s)",
 274                         GraphStart, yMax, yMin, yMean, n, GraphTraceLen,
 275                         CursorBPos - CursorAPos, (CursorBPos - CursorAPos)/CursorScaleFactor,GraphPixelsPerPoint,CursorAPos,GraphBuffer[CursorAPos],CursorBPos,GraphBuffer[CursorBPos],PlotGridXdefault,PlotGridYdefault,GridLocked?"Locked":"Unlocked");
 276
 277         painter.setPen(QColor(255, 255, 255));
 278         painter.drawText(50, r.bottom() - 20, str);
 279 }
 280
 281 ProxWidget::ProxWidget(QWidget *parent) : QWidget(parent), GraphStart(0), GraphPixelsPerPoint(1)
 282 {
 283         resize(600, 300);
 284
 285         QPalette palette(QColor(0,0,0,0));
 286         palette.setColor(QPalette::WindowText, QColor(255,255,255));
 287         palette.setColor(QPalette::Text, QColor(255,255,255));
 288         palette.setColor(QPalette::Button, QColor(100, 100, 100));
 289         setPalette(palette);
 290         setAutoFillBackground(true);
 291         CursorAPos = 0;
 292         CursorBPos = 0;
 293 }
 294
 295 void ProxWidget::closeEvent(QCloseEvent *event)
 296 {
 297         event->ignore();
 298         this->hide();
 299 }
 300
 301 void ProxWidget::mouseMoveEvent(QMouseEvent *event)
 302 {
 303         int x = event->x();
 304         x -= 40;
 305         x = (int)(x / GraphPixelsPerPoint);
 306         x += GraphStart;
 307         if((event->buttons() & Qt::LeftButton)) {
 308                 CursorAPos = x;
 309         } else if (event->buttons() & Qt::RightButton) {
 310                 CursorBPos = x;
 311         }
 312
 313
 314         this->update();
 315 }
 316
 317 void ProxWidget::keyPressEvent(QKeyEvent *event)
 318 {
 319         int     offset;
 320         int     gridchanged;
 321
 322         gridchanged= 0;
 323
 324         if(event->modifiers() & Qt::ShiftModifier) {
 325                 if (PlotGridX)
 326                         offset= PageWidth - (PageWidth % PlotGridX);
 327                 else
 328                         offset= PageWidth;
 329         } else
 330                 if(event->modifiers() & Qt::ControlModifier)
 331                         offset= 1;
 332                 else
 333                         offset= (int)(20 / GraphPixelsPerPoint);
 334
 335         switch(event->key()) {
 336                 case Qt::Key_Down:
 337                         if(GraphPixelsPerPoint <= 50) {
 338                                 GraphPixelsPerPoint *= 2;
 339                         }
 340                         break;
 341
 342                 case Qt::Key_Up:
 343                         if(GraphPixelsPerPoint >= 0.02) {
 344                                 GraphPixelsPerPoint /= 2;
 345                         }
 346                         break;
 347
 348                 case Qt::Key_Right:
 349                         if(GraphPixelsPerPoint < 20) {
 350                                 if (PlotGridX && GridLocked && GraphStart < startMax){
 351                                         GridOffset -= offset;
 352                                         GridOffset %= PlotGridX;
 353                                         gridchanged= 1;
 354                                 }
 355                                 GraphStart += offset;
 356                         } else {
 357                                 if (PlotGridX && GridLocked && GraphStart < startMax){
 358                                         GridOffset--;
 359                                         GridOffset %= PlotGridX;
 360                                         gridchanged= 1;
 361                                 }
 362                                 GraphStart++;
 363                         }
 364                         if(GridOffset < 0) {
 365                                 GridOffset += PlotGridX;
 366                         }
 367                         if (gridchanged)
 368                                 if (GraphStart > startMax) {
 369                                         GridOffset += (GraphStart - startMax);
 370                                         GridOffset %= PlotGridX;
 371                                 }
 372                         break;
 373
 374                 case Qt::Key_Left:
 375                         if(GraphPixelsPerPoint < 20) {
 376                                 if (PlotGridX && GridLocked && GraphStart > 0){
 377                                         GridOffset += offset;
 378                                         GridOffset %= PlotGridX;
 379                                         gridchanged= 1;
 380                                 }
 381                                 GraphStart -= offset;
 382                         } else {
 383                                 if (PlotGridX && GridLocked && GraphStart > 0){
 384                                         GridOffset++;
 385                                         GridOffset %= PlotGridX;
 386                                         gridchanged= 1;
 387                                 }
 388                                 GraphStart--;
 389                         }
 390                         if (gridchanged){
 391                                 if (GraphStart < 0)
 392                                         GridOffset += GraphStart;
 393                                 if(GridOffset < 0)
 394                                         GridOffset += PlotGridX;
 395                         GridOffset %= PlotGridX;
 396                         }
 397                         break;
 398
 399                 case Qt::Key_G:
 400                         if(PlotGridX || PlotGridY) {
 401                                 PlotGridX= 0;
 402                                 PlotGridY= 0;
 403                         } else {
 404                                 PlotGridX= PlotGridXdefault;
 405                                 PlotGridY= PlotGridYdefault;
 406                                 }
 407                         break;
 408
 409                 case Qt::Key_H:
 410                         puts("Plot Window Keystrokes:\n");
 411                         puts(" Key                      Action\n");
 412                         puts(" DOWN                     Zoom in");
 413                         puts(" G                        Toggle grid display");
 414                         puts(" H                        Show help");
 415                         puts(" L                        Toggle lock grid relative to samples");
 416                         puts(" LEFT                     Move left");
 417                         puts(" <CTL>LEFT                Move left 1 sample");
 418                         puts(" <SHIFT>LEFT              Page left");
 419                         puts(" LEFT-MOUSE-CLICK         Set yellow cursor");
 420                         puts(" Q                        Hide window");
 421                         puts(" RIGHT                    Move right");
 422                         puts(" <CTL>RIGHT               Move right 1 sample");
 423                         puts(" <SHIFT>RIGHT             Page right");
 424                         puts(" RIGHT-MOUSE-CLICK        Set purple cursor");
 425                         puts(" UP                       Zoom out");
 426                         puts("");
 427                         puts("Use client window 'data help' for more plot commands\n");
 428                         break;
 429
 430                 case Qt::Key_L:
 431                         GridLocked= !GridLocked;
 432                         break;
 433
 434                 case Qt::Key_Q:
 435                         this->hide();
 436                         break;
 437
 438                 default:
 439                         QWidget::keyPressEvent(event);
 440                         return;
 441                         break;
 442         }
 443
 444         this->update();
 445 }