Ensure lyrics background is at least 300x300px

ChangeLog

@@ -61,6 +61,7 @@
     intended to be run by users.
 35. Use com.googlecode.cantata instead of org.kde.cantata for DBUS service, etc.
 36. Add action icons to grouped-albums style playlists at the top level.
+37. Scale image in lyrics view if it is less than 300x300px
 
 0.9.2
 -----

widgets/textbrowser.cpp

@@ -24,6 +24,33 @@
 #include "textbrowser.h"
 #include <QtGui/QPainter>
 
+static const int constMinSize=300;
+
+void TextBrowser::setImage(const QImage &img)
+{
+    if (drawImage && (!img.isNull() || (img.isNull()!=image.isNull()))) {
+        image=img;
+        if (image.width()<constMinSize || image.height()<constMinSize) {
+            image=image.scaled(QSize(constMinSize, constMinSize), Qt::KeepAspectRatio, Qt::SmoothTransformation);
+        }
+        viewport()->update();
+    }
+}
+
+void TextBrowser::enableImage(bool e)
+{
+    if (e!=drawImage) {
+        drawImage=e;
+        if (!drawImage) {
+            image=QImage();
+        }
+        if (e) {
+            viewport()->setAutoFillBackground(false);
+        }
+        viewport()->update();
+    }
+}
+
 void TextBrowser::paintEvent(QPaintEvent *e)
 {
     if (drawImage && isReadOnly() && !image.isNull()) {

widgets/textbrowser.h

@@ -27,51 +27,18 @@
 #include <QtGui/QTextBrowser>
 #include <QtGui/QImage>
 #include <QtCore/QDebug>
+
 class TextBrowser : public QTextBrowser
 {
 public:
-    TextBrowser(QWidget *p)
-        : QTextBrowser(p)
-        , drawImage(false) {
-        orig=font().pointSize();
-    }
+    TextBrowser(QWidget *p) : QTextBrowser(p) , drawImage(false) { orig=font().pointSize(); }
+    virtual ~TextBrowser() {  }
 
-    virtual ~TextBrowser() {
-    }
-
-    void setZoom(int diff) {
-        if (diff) {
-            zoomIn(diff);
-        }
-    }
-
-    int zoom() const {
-        return font().pointSize()-orig;
-    }
-
-    void setImage(const QImage &img) {
-        if (drawImage && (!img.isNull() || (img.isNull()!=image.isNull()))) {
-            image=img;
-            viewport()->update();
-        }
-    }
-
-    void enableImage(bool e) {
-        if (e!=drawImage) {
-            drawImage=e;
-            if (!drawImage) {
-                image=QImage();
-            }
-            if (e) {
-                viewport()->setAutoFillBackground(false);
-            }
-            viewport()->update();
-        }
-    }
-
-    bool imageEnabled() {
-        return drawImage;
-    }
+    void setZoom(int diff) { if (diff) zoomIn(diff);  }
+    int zoom() const { return font().pointSize()-orig; }
+    void setImage(const QImage &img);
+    void enableImage(bool e);
+    bool imageEnabled() { return drawImage; }
 
     void paintEvent(QPaintEvent *e);