From 6d609e009f4836418bbe5b404be8ae03d29ef8cb Mon Sep 17 00:00:00 2001
From: Robert Bieber <robby@bieberphoto.com>
Date: Wed, 7 Jul 2010 09:33:47 +0000
Subject: Theme Editor: Implemented caching for rendered text, added profiling
 info to debug build, added a 500msec delay when rendering after code changes
 to prevent editor from hanging on large themes

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@27332 a1c6a512-1295-4272-9138-f99709370657
---
 utils/themeeditor/gui/editorwindow.cpp |  5 +++++
 utils/themeeditor/gui/skindocument.cpp | 21 +++++++++++++++++++--
 utils/themeeditor/gui/skindocument.h   |  6 ++++++
 3 files changed, 30 insertions(+), 2 deletions(-)

(limited to 'utils/themeeditor/gui')

diff --git a/utils/themeeditor/gui/editorwindow.cpp b/utils/themeeditor/gui/editorwindow.cpp
index 4c073b9e0b..171e7b7019 100644
--- a/utils/themeeditor/gui/editorwindow.cpp
+++ b/utils/themeeditor/gui/editorwindow.cpp
@@ -22,6 +22,8 @@
 #include "editorwindow.h"
 #include "projectmodel.h"
 #include "ui_editorwindow.h"
+#include "rbfontcache.h"
+#include "rbtextcache.h"
 
 #include <QDesktopWidget>
 #include <QFileSystemModel>
@@ -49,6 +51,9 @@ EditorWindow::~EditorWindow()
         delete project;
     delete deviceConfig;
     delete deviceDock;
+
+    RBFontCache::clearCache();
+    RBTextCache::clearCache();
 }
 
 void EditorWindow::loadTabFromSkinFile(QString fileName)
diff --git a/utils/themeeditor/gui/skindocument.cpp b/utils/themeeditor/gui/skindocument.cpp
index 9a381a9589..f04c12d213 100644
--- a/utils/themeeditor/gui/skindocument.cpp
+++ b/utils/themeeditor/gui/skindocument.cpp
@@ -31,6 +31,8 @@
 
 #include <QDebug>
 
+const int SkinDocument::updateInterval = 500;
+
 SkinDocument::SkinDocument(QLabel* statusLabel, ProjectModel* project,
                            DeviceState* device, QWidget *parent)
                                :TabContent(parent), statusLabel(statusLabel),
@@ -70,6 +72,8 @@ SkinDocument::SkinDocument(QLabel* statusLabel, QString file,
     /* Setting the title */
     QStringList decomposed = fileName.split('/');
     titleText = decomposed.last();
+
+    lastUpdate = QTime::currentTime();
 }
 
 SkinDocument::~SkinDocument()
@@ -161,6 +165,11 @@ void SkinDocument::setupUI()
     findReplace->hide();
 
     settingsChanged();
+
+    /* Setting up a timer to check for updates */
+    checkUpdate.setInterval(500);
+    QObject::connect(&checkUpdate, SIGNAL(timeout()),
+                     this, SLOT(codeChanged()));
 }
 
 void SkinDocument::settingsChanged()
@@ -273,8 +282,16 @@ void SkinDocument::codeChanged()
     else
         emit titleChanged(titleText);
 
-    model->render(project, device, &fileName);
-
+    if(lastUpdate.msecsTo(QTime::currentTime()) >= updateInterval)
+    {
+        model->render(project, device, &fileName);
+        checkUpdate.stop();
+        lastUpdate = QTime::currentTime();
+    }
+    else
+    {
+        checkUpdate.start();
+    }
     cursorChanged();
 
 }
diff --git a/utils/themeeditor/gui/skindocument.h b/utils/themeeditor/gui/skindocument.h
index 7563b3cb53..f7ac2bbc2c 100644
--- a/utils/themeeditor/gui/skindocument.h
+++ b/utils/themeeditor/gui/skindocument.h
@@ -26,6 +26,8 @@
 #include <QLabel>
 #include <QHBoxLayout>
 #include <QGraphicsScene>
+#include <QTime>
+#include <QTimer>
 
 #include "findreplacedialog.h"
 
@@ -113,6 +115,10 @@ private:
     DeviceState* device;
 
     FindReplaceDialog* findReplace;
+
+    QTime lastUpdate;
+    static const int updateInterval;
+    QTimer checkUpdate;
 };
 
 #endif // SKINDOCUMENT_H
-- 
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