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1 | //----------------------------------------------------------------------------- |
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2 | // Copyright (C) 2009 Michael Gernoth <michael at gernoth.net> |
3 | // |
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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 | |
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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> |
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21 | #include <stdio.h> |
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22 | #include "proxguiqt.h" |
23 | #include "proxgui.h" |
24 | |
25 | void ProxGuiQT::ShowGraphWindow(void) |
26 | { |
27 | emit ShowGraphWindowSignal(); |
28 | } |
29 | |
30 | void ProxGuiQT::RepaintGraphWindow(void) |
31 | { |
32 | emit RepaintGraphWindowSignal(); |
33 | } |
34 | |
35 | void ProxGuiQT::HideGraphWindow(void) |
36 | { |
37 | emit HideGraphWindowSignal(); |
38 | } |
39 | |
40 | void ProxGuiQT::_ShowGraphWindow(void) |
41 | { |
42 | if(!plotapp) |
43 | return; |
44 | |
45 | if (!plotwidget) |
46 | plotwidget = new ProxWidget(); |
47 | |
48 | plotwidget->show(); |
49 | } |
50 | |
51 | void ProxGuiQT::_RepaintGraphWindow(void) |
52 | { |
53 | if (!plotapp || !plotwidget) |
54 | return; |
55 | |
56 | plotwidget->update(); |
57 | } |
58 | |
59 | void ProxGuiQT::_HideGraphWindow(void) |
60 | { |
61 | if (!plotapp || !plotwidget) |
62 | return; |
63 | |
64 | plotwidget->hide(); |
65 | } |
66 | |
67 | void ProxGuiQT::MainLoop() |
68 | { |
69 | plotapp = new QApplication(argc, argv); |
70 | |
71 | connect(this, SIGNAL(ShowGraphWindowSignal()), this, SLOT(_ShowGraphWindow())); |
72 | connect(this, SIGNAL(RepaintGraphWindowSignal()), this, SLOT(_RepaintGraphWindow())); |
73 | connect(this, SIGNAL(HideGraphWindowSignal()), this, SLOT(_HideGraphWindow())); |
74 | |
75 | plotapp->exec(); |
76 | } |
77 | |
78 | ProxGuiQT::ProxGuiQT(int argc, char **argv) : plotapp(NULL), plotwidget(NULL), |
79 | argc(argc), argv(argv) |
80 | { |
81 | } |
82 | |
83 | ProxGuiQT::~ProxGuiQT(void) |
84 | { |
85 | if (plotwidget) { |
86 | delete plotwidget; |
87 | plotwidget = NULL; |
88 | } |
89 | |
90 | if (plotapp) { |
91 | plotapp->quit(); |
92 | delete plotapp; |
93 | plotapp = NULL; |
94 | } |
95 | } |
96 | |
97 | void ProxWidget::paintEvent(QPaintEvent *event) |
98 | { |
99 | QPainter painter(this); |
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100 | QPainterPath penPath, whitePath, greyPath, lightgreyPath, cursorAPath, cursorBPath; |
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101 | QRect r; |
102 | QBrush brush(QColor(100, 255, 100)); |
103 | QPen pen(QColor(100, 255, 100)); |
104 | |
105 | painter.setFont(QFont("Arial", 10)); |
106 | |
107 | if(GraphStart < 0) { |
108 | GraphStart = 0; |
109 | } |
110 | |
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111 | if (CursorAPos > GraphTraceLen) |
112 | CursorAPos= 0; |
113 | if(CursorBPos > GraphTraceLen) |
114 | CursorBPos= 0; |
115 | |
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116 | r = rect(); |
117 | |
118 | painter.fillRect(r, QColor(0, 0, 0)); |
119 | |
120 | whitePath.moveTo(r.left() + 40, r.top()); |
121 | whitePath.lineTo(r.left() + 40, r.bottom()); |
122 | |
123 | int zeroHeight = r.top() + (r.bottom() - r.top()) / 2; |
124 | |
125 | greyPath.moveTo(r.left(), zeroHeight); |
126 | greyPath.lineTo(r.right(), zeroHeight); |
127 | painter.setPen(QColor(100, 100, 100)); |
128 | painter.drawPath(greyPath); |
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129 | |
130 | // plot X and Y grid lines |
131 | int i; |
132 | if ((PlotGridX > 0) && ((PlotGridX * GraphPixelsPerPoint) > 1)) { |
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133 | for(i = 40; i < r.right(); i += (int)(PlotGridX * GraphPixelsPerPoint)) { |
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134 | //SelectObject(hdc, GreyPenLite); |
135 | //MoveToEx(hdc, r.left + i, r.top, NULL); |
136 | //LineTo(hdc, r.left + i, r.bottom); |
137 | lightgreyPath.moveTo(r.left()+i,r.top()); |
138 | lightgreyPath.lineTo(r.left()+i,r.bottom()); |
139 | painter.drawPath(lightgreyPath); |
140 | } |
141 | } |
142 | if ((PlotGridY > 0) && ((PlotGridY * GraphPixelsPerPoint) > 1)){ |
143 | for(i = 0; i < ((r.top() + r.bottom())>>1); i += (int)(PlotGridY * GraphPixelsPerPoint)) { |
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144 | lightgreyPath.moveTo(r.left() + 40,zeroHeight + i); |
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145 | lightgreyPath.lineTo(r.right(),zeroHeight + i); |
146 | painter.drawPath(lightgreyPath); |
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147 | lightgreyPath.moveTo(r.left() + 40,zeroHeight - i); |
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148 | lightgreyPath.lineTo(r.right(),zeroHeight - i); |
149 | painter.drawPath(lightgreyPath); |
150 | } |
151 | } |
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152 | |
153 | int startMax = |
154 | (GraphTraceLen - (int)((r.right() - r.left() - 40) / GraphPixelsPerPoint)); |
155 | if(startMax < 0) { |
156 | startMax = 0; |
157 | } |
158 | if(GraphStart > startMax) { |
159 | GraphStart = startMax; |
160 | } |
161 | |
162 | int absYMax = 1; |
163 | |
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164 | for(i = GraphStart; ; i++) { |
165 | if(i >= GraphTraceLen) { |
166 | break; |
167 | } |
168 | if(fabs((double)GraphBuffer[i]) > absYMax) { |
169 | absYMax = (int)fabs((double)GraphBuffer[i]); |
170 | } |
171 | int x = 40 + (int)((i - GraphStart)*GraphPixelsPerPoint); |
172 | if(x > r.right()) { |
173 | break; |
174 | } |
175 | } |
176 | |
177 | absYMax = (int)(absYMax*1.2 + 1); |
178 | |
179 | // number of points that will be plotted |
180 | int span = (int)((r.right() - r.left()) / GraphPixelsPerPoint); |
181 | // one label every 100 pixels, let us say |
182 | int labels = (r.right() - r.left() - 40) / 100; |
183 | if(labels <= 0) labels = 1; |
184 | int pointsPerLabel = span / labels; |
185 | if(pointsPerLabel <= 0) pointsPerLabel = 1; |
186 | |
187 | int yMin = INT_MAX; |
188 | int yMax = INT_MIN; |
189 | int yMean = 0; |
190 | int n = 0; |
191 | |
192 | for(i = GraphStart; ; i++) { |
193 | if(i >= GraphTraceLen) { |
194 | break; |
195 | } |
196 | int x = 40 + (int)((i - GraphStart)*GraphPixelsPerPoint); |
197 | if(x > r.right() + GraphPixelsPerPoint) { |
198 | break; |
199 | } |
200 | |
201 | int y = GraphBuffer[i]; |
202 | if(y < yMin) { |
203 | yMin = y; |
204 | } |
205 | if(y > yMax) { |
206 | yMax = y; |
207 | } |
208 | yMean += y; |
209 | n++; |
210 | |
211 | y = (y * (r.top() - r.bottom()) / (2*absYMax)) + zeroHeight; |
212 | if(i == GraphStart) { |
213 | penPath.moveTo(x, y); |
214 | } else { |
215 | penPath.lineTo(x, y); |
216 | } |
217 | |
218 | if(GraphPixelsPerPoint > 10) { |
219 | QRect f(QPoint(x - 3, y - 3),QPoint(x + 3, y + 3)); |
220 | painter.fillRect(f, brush); |
221 | } |
222 | |
223 | if(((i - GraphStart) % pointsPerLabel == 0) && i != GraphStart) { |
224 | whitePath.moveTo(x, zeroHeight - 3); |
225 | whitePath.lineTo(x, zeroHeight + 3); |
226 | |
227 | char str[100]; |
228 | sprintf(str, "+%d", (i - GraphStart)); |
229 | |
230 | painter.setPen(QColor(255, 255, 255)); |
231 | QRect size; |
232 | QFontMetrics metrics(painter.font()); |
233 | size = metrics.boundingRect(str); |
234 | painter.drawText(x - (size.right() - size.left()), zeroHeight + 9, str); |
235 | |
236 | penPath.moveTo(x,y); |
237 | } |
238 | |
239 | if(i == CursorAPos || i == CursorBPos) { |
240 | QPainterPath *cursorPath; |
241 | |
242 | if(i == CursorAPos) { |
243 | cursorPath = &cursorAPath; |
244 | } else { |
245 | cursorPath = &cursorBPath; |
246 | } |
247 | cursorPath->moveTo(x, r.top()); |
248 | cursorPath->lineTo(x, r.bottom()); |
249 | penPath.moveTo(x, y); |
250 | } |
251 | } |
252 | |
253 | if(n != 0) { |
254 | yMean /= n; |
255 | } |
256 | |
257 | painter.setPen(QColor(255, 255, 255)); |
258 | painter.drawPath(whitePath); |
259 | painter.setPen(pen); |
260 | painter.drawPath(penPath); |
261 | painter.setPen(QColor(255, 255, 0)); |
262 | painter.drawPath(cursorAPath); |
263 | painter.setPen(QColor(255, 0, 255)); |
264 | painter.drawPath(cursorBPath); |
265 | |
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266 | char str[200]; |
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267 | sprintf(str, "@%d max=%d min=%d mean=%d n=%d/%d dt=%d [%.3f] zoom=%.3f CursorA=%d [%d] CursorB=%d [%d]", |
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268 | GraphStart, yMax, yMin, yMean, n, GraphTraceLen, |
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269 | CursorBPos - CursorAPos, (CursorBPos - CursorAPos)/CursorScaleFactor,GraphPixelsPerPoint,CursorAPos,GraphBuffer[CursorAPos],CursorBPos,GraphBuffer[CursorBPos]); |
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270 | |
271 | painter.setPen(QColor(255, 255, 255)); |
272 | painter.drawText(50, r.bottom() - 20, str); |
273 | } |
274 | |
275 | ProxWidget::ProxWidget(QWidget *parent) : QWidget(parent), GraphStart(0), GraphPixelsPerPoint(1) |
276 | { |
277 | resize(600, 500); |
278 | |
279 | QPalette palette(QColor(0,0,0,0)); |
280 | palette.setColor(QPalette::WindowText, QColor(255,255,255)); |
281 | palette.setColor(QPalette::Text, QColor(255,255,255)); |
282 | palette.setColor(QPalette::Button, QColor(100, 100, 100)); |
283 | setPalette(palette); |
284 | setAutoFillBackground(true); |
285 | } |
286 | |
287 | void ProxWidget::closeEvent(QCloseEvent *event) |
288 | { |
289 | event->ignore(); |
290 | this->hide(); |
291 | } |
292 | |
293 | void ProxWidget::mouseMoveEvent(QMouseEvent *event) |
294 | { |
295 | int x = event->x(); |
296 | x -= 40; |
297 | x = (int)(x / GraphPixelsPerPoint); |
298 | x += GraphStart; |
299 | if((event->buttons() & Qt::LeftButton)) { |
300 | CursorAPos = x; |
301 | } else if (event->buttons() & Qt::RightButton) { |
302 | CursorBPos = x; |
303 | } |
304 | |
305 | |
306 | this->update(); |
307 | } |
308 | |
309 | void ProxWidget::keyPressEvent(QKeyEvent *event) |
310 | { |
311 | switch(event->key()) { |
312 | case Qt::Key_Down: |
313 | if(GraphPixelsPerPoint <= 50) { |
314 | GraphPixelsPerPoint *= 2; |
315 | } |
316 | break; |
317 | |
318 | case Qt::Key_Up: |
319 | if(GraphPixelsPerPoint >= 0.02) { |
320 | GraphPixelsPerPoint /= 2; |
321 | } |
322 | break; |
323 | |
324 | case Qt::Key_Right: |
325 | if(GraphPixelsPerPoint < 20) { |
326 | GraphStart += (int)(20 / GraphPixelsPerPoint); |
327 | } else { |
328 | GraphStart++; |
329 | } |
330 | break; |
331 | |
332 | case Qt::Key_Left: |
333 | if(GraphPixelsPerPoint < 20) { |
334 | GraphStart -= (int)(20 / GraphPixelsPerPoint); |
335 | } else { |
336 | GraphStart--; |
337 | } |
338 | break; |
339 | |
340 | default: |
341 | QWidget::keyPressEvent(event); |
342 | return; |
343 | break; |
344 | } |
345 | |
346 | this->update(); |
347 | } |