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List:       kde-commits
Subject:    KDE/kdegraphics/libs/libksane/libksane/options
From:       Kåre Särs <kare.sars () kolumbus ! fi>
Date:       2009-02-16 19:34:23
Message-ID: 1234812863.497138.12411.nullmailer () svn ! kde ! org
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SVN commit 927090 by sars:

add an implementation of set/getValue(float) to the int and fixed typed combobox \
options (for strings it returns false)

 M  +64 -2     ksane_opt_combo.cpp  


--- trunk/KDE/kdegraphics/libs/libksane/libksane/options/ksane_opt_combo.cpp \
#927089:927090 @@ -222,9 +222,71 @@
 }
 
 
-bool KSaneOptCombo::getValue(float &) {return false;}
-bool KSaneOptCombo::setValue(float) {return false;}
+bool KSaneOptCombo::getValue(float &val)
+{
+    if (state() == STATE_HIDDEN) return false;
 
+    // read that current value
+    QVarLengthArray<unsigned char> data(m_optDesc->size);
+    SANE_Status status;
+    SANE_Int res;
+    status = sane_control_option (m_handle, m_index, SANE_ACTION_GET_VALUE, \
data.data(), &res); +    if (status != SANE_STATUS_GOOD) {
+        kDebug(51004) << m_optDesc->name << "sane_control_option returned" << \
status; +        return false;
+    }
+    
+    switch (m_optDesc->type)
+    {
+        case SANE_TYPE_INT:
+            val = (float)toSANE_Word(data.data());
+            return true;
+        case SANE_TYPE_FIXED:
+            val = SANE_UNFIX(toSANE_Word(data.data()));
+            return true;
+        default:
+            kDebug(51004) << "Type" << m_optDesc->type << "not supported!";
+    }
+    return false;
+}
+
+bool KSaneOptCombo::setValue(float value)
+{
+    unsigned char data[4];
+    float tmp;
+    int i;
+    
+    switch (m_optDesc->type)
+    {
+        case SANE_TYPE_INT:
+            for (i=1; i<=m_optDesc->constraint.word_list[0]; i++) {
+                tmp = (float)m_optDesc->constraint.word_list[i];
+                if (qAbs(tmp - value) < 0.01) {
+                    fromSANE_Word(data, m_optDesc->constraint.word_list[i]);
+                    writeData(data);
+                    readValue();
+                    return true;
+                }
+            }
+            break;
+        case SANE_TYPE_FIXED:
+            for (i=1; i<=m_optDesc->constraint.word_list[0]; i++) {
+                tmp = (float)SANE_UNFIX(m_optDesc->constraint.word_list[i]);
+                if (qAbs(tmp - value) < 0.01) {
+                    fromSANE_Word(data, m_optDesc->constraint.word_list[i]);
+                    writeData(data);
+                    readValue();
+                    return true;
+                }
+            }
+            break;
+        default:
+            kDebug(51004) << "can not handle type:" << m_optDesc->type;
+            break;
+    }
+    return false;
+}
+
 bool KSaneOptCombo::getValue(QString &val)
 {
     if (state() == STATE_HIDDEN) return false;


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