[idd] config: support fractional refresh rates

Store refresh rates in millihertz and preserve three decimal places.

Advertise exact rational rates while accepting legacy integer values.

Accept rates from 23.900 through 1000.000 Hz.

idd/LGIddHelper/CConfigWindow.cpp

@@ -19,6 +19,7 @@
  */
 
 #include "CConfigWindow.h"
+#include "RefreshRate.h"
 #include "CListBox.h"
 #include "CGroupBox.h"
 #include "CEditWidget.h"
@@ -160,7 +161,7 @@ LRESULT CConfigWindow::onCreate()
 
   m_modeWidth.reset(new CEditWidget(WS_TABSTOP | ES_LEFT | ES_NUMBER, m_hwnd));
   m_modeHeight.reset(new CEditWidget(WS_TABSTOP | ES_LEFT | ES_NUMBER, m_hwnd));
-  m_modeRefresh.reset(new CEditWidget(WS_TABSTOP | ES_LEFT | ES_NUMBER, m_hwnd));
+  m_modeRefresh.reset(new CEditWidget(WS_TABSTOP | ES_LEFT, m_hwnd));
   m_modePreferred.reset(new CCheckbox(L"prefer", 0, m_hwnd));
 
   m_modeUpdate.reset(new CButton(L"Update", WS_TABSTOP, m_hwnd));
@@ -173,11 +174,11 @@ LRESULT CConfigWindow::onCreate()
   m_modeRevert.reset(new CButton(L"Revert", WS_TABSTOP, m_hwnd));
 
   m_defRefreshLabel.reset(new CStaticWidget(L"Default refresh:", SS_CENTERIMAGE, m_hwnd));
-  m_defRefresh.reset(new CEditWidget(ES_LEFT | ES_NUMBER | WS_TABSTOP, m_hwnd));
+  m_defRefresh.reset(new CEditWidget(ES_LEFT | WS_TABSTOP, m_hwnd));
   m_defRefreshHz.reset(new CStaticWidget(L"Hz", SS_CENTERIMAGE, m_hwnd));
 
   if (m_defaultRefresh)
-    m_defRefresh->setNumericValue(*m_defaultRefresh);
+    m_defRefresh->setValue(LGFormatRefreshRate(*m_defaultRefresh));
   else
     m_defRefresh->disable();
 
@@ -253,7 +254,7 @@ void CConfigWindow::onModeListSelectChange()
     auto &mode = (*m_modes)[index];
     m_modeWidth->setNumericValue(mode.width);
     m_modeHeight->setNumericValue(mode.height);
-    m_modeRefresh->setNumericValue(mode.refresh);
+    m_modeRefresh->setValue(LGFormatRefreshRate(mode.refreshMilliHz));
     m_modePreferred->setChecked(mode.preferred);
   }
   EnableWindow(*m_modeUpdate, TRUE);
@@ -286,7 +287,6 @@ LRESULT CConfigWindow::onCommand(WORD id, WORD code, HWND hwnd)
     {
       mode.width = m_modeWidth->getNumericValue();
       mode.height = m_modeHeight->getNumericValue();
-      mode.refresh = m_modeRefresh->getNumericValue();
       mode.preferred = m_modePreferred->isChecked();
     }
     catch (std::logic_error&)
@@ -294,6 +294,12 @@ LRESULT CConfigWindow::onCommand(WORD id, WORD code, HWND hwnd)
       return 0;
     }
 
+    unsigned refreshMilliHz;
+    if (!LGParseRefreshRate(
+        m_modeRefresh->getValue(), refreshMilliHz))
+      return 0;
+    mode.refreshMilliHz = refreshMilliHz;
+
     m_modeBox->clear();
     m_modeBox->setSel(updateModeList(index));
   }
@@ -319,14 +325,10 @@ LRESULT CConfigWindow::onCommand(WORD id, WORD code, HWND hwnd)
   }
   else if (m_defRefresh && hwnd == *m_defRefresh && code == EN_CHANGE && m_defaultRefresh)
   {
-    try
-    {
-      m_defaultRefresh = m_defRefresh->getNumericValue();
-    }
-    catch (std::logic_error &)
-    {
+    unsigned refreshMilliHz;
+    if (!LGParseRefreshRate(m_defRefresh->getValue(), refreshMilliHz))
       return 0;
-    }
+    m_defaultRefresh = refreshMilliHz;
   }
   else if (m_prefNoGPU && hwnd == *m_prefNoGPU && code == BN_CLICKED && m_noGPU)
   {
@@ -377,7 +379,7 @@ LRESULT CConfigWindow::onCommand(WORD id, WORD code, HWND hwnd)
     }
 
     if (m_defaultRefresh)
-      m_defRefresh->setNumericValue(*m_defaultRefresh);
+      m_defRefresh->setValue(LGFormatRefreshRate(*m_defaultRefresh));
     else
       m_defRefresh->disable();
   }