From 204df42586c1b0fef24d1a72f51302ad4f719e0d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Samuel=20R=C3=B8dal?= <sroedal@trolltech.com>
Date: Mon, 25 Jan 2010 14:14:52 +0100
Subject: Added --range and --single arguments to qttracereplay.

Makes it easy to split a large trace into several sub-traces by running
the qttracereplay with -graphicssystem trace.

Reviewed-by: Gunnar Sletta
---
 tools/qttracereplay/main.cpp | 72 ++++++++++++++++++++++++++++++++++++++------
 1 file changed, 63 insertions(+), 9 deletions(-)

diff --git a/tools/qttracereplay/main.cpp b/tools/qttracereplay/main.cpp
index a932d72..82373f7 100644
--- a/tools/qttracereplay/main.cpp
+++ b/tools/qttracereplay/main.cpp
@@ -49,7 +49,7 @@ class ReplayWidget : public QWidget
 {
     Q_OBJECT
 public:
-    ReplayWidget(const QString &filename);
+    ReplayWidget(const QString &filename, int from, int to, bool single);
 
     void paintEvent(QPaintEvent *event);
     void resizeEvent(QResizeEvent *event);
@@ -68,6 +68,11 @@ public:
     QList<uint> visibleUpdates;
     QList<uint> iterationTimes;
     QString filename;
+
+    int from;
+    int to;
+
+    bool single;
 };
 
 void ReplayWidget::updateRect()
@@ -89,6 +94,11 @@ void ReplayWidget::paintEvent(QPaintEvent *)
         currentFrame = 0;
         ++currentIteration;
 
+        if (single) {
+            deleteLater();
+            return;
+        }
+
         if (currentIteration == 3)
             timer.start();
         else if (currentIteration > 3) {
@@ -137,20 +147,28 @@ void ReplayWidget::resizeEvent(QResizeEvent *event)
     visibleUpdates.clear();
 
     QRect bounds = rect();
-    for (int i = 0; i < updates.size(); ++i) {
+
+    int first = qMax(0, from);
+    int last = qMin(unsigned(to), unsigned(updates.size()));
+    for (int i = first; i < last; ++i) {
         if (updates.at(i).intersects(bounds))
             visibleUpdates << i;
     }
 
-    if (visibleUpdates.size() != updates.size())
-        printf("Warning: skipped %d frames due to limited resolution\n", updates.size() - visibleUpdates.size());
+    int range = last - first;
+
+    if (visibleUpdates.size() != range)
+        printf("Warning: skipped %d frames due to limited resolution\n", range - visibleUpdates.size());
 
 }
 
-ReplayWidget::ReplayWidget(const QString &filename_)
+ReplayWidget::ReplayWidget(const QString &filename_, int from_, int to_, bool single_)
     : currentFrame(0)
     , currentIteration(0)
     , filename(filename_)
+    , from(from_)
+    , to(to_)
+    , single(single_)
 {
     setWindowTitle(filename);
     QFile file(filename);
@@ -189,17 +207,53 @@ int main(int argc, char **argv)
 
     if (argc <= 1 || qstrcmp(argv[1], "-h") == 0 || qstrcmp(argv[1], "--help") == 0) {
         printf("Replays a tracefile generated with '-graphicssystem trace'\n");
-        printf("Usage:\n  > %s [traceFile]\n", argv[0]);
+        printf("Usage:\n  > %s [OPTIONS] [traceFile]\n", argv[0]);
+        printf("OPTIONS\n"
+               "   --range=from-to to specify a frame range.\n"
+               "   --singlerun to do only one run (without statistics)\n");
         return 1;
     }
 
-    QFile file(argv[1]);
+    QFile file(app.arguments().last());
     if (!file.exists()) {
-        printf("%s does not exist\n", argv[1]);
+        printf("%s does not exist\n", qPrintable(app.arguments().last()));
         return 1;
     }
 
-    ReplayWidget *widget = new ReplayWidget(argv[1]);
+    bool single = false;
+
+    int from = 0;
+    int to = -1;
+    for (int i = 1; i < app.arguments().size() - 1; ++i) {
+        QString arg = app.arguments().at(i);
+        if (arg.startsWith(QLatin1String("--range="))) {
+            QString rest = arg.mid(8);
+            QStringList components = rest.split(QLatin1Char('-'));
+
+            bool ok1 = false;
+            bool ok2 = false;
+            int fromCandidate = 0;
+            int toCandidate = 0;
+            if (components.size() == 2) {
+                fromCandidate = components.first().toInt(&ok1);
+                toCandidate = components.last().toInt(&ok2);
+            }
+
+            if (ok1 && ok2) {
+                from = fromCandidate;
+                to = toCandidate;
+            } else {
+                printf("ERROR: malformed syntax in argument %s\n", qPrintable(arg));
+            }
+        } else if (arg == QLatin1String("--singlerun")) {
+            single = true;
+        } else {
+            printf("Unrecognized argument: %s\n", qPrintable(arg));
+            return 1;
+        }
+    }
+
+    ReplayWidget *widget = new ReplayWidget(app.arguments().last(), from, to, single);
 
     if (!widget->updates.isEmpty()) {
         widget->show();
-- 
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