[freetype2-demos] master 52f70d1 2/7: [ftinspect] Disable unavailable items in anti-aliasing combo box.

[Werner LEMBERG]

branch: master
commit 52f70d13dd385536bb4b94f52f7f3808ee5b13cf
Author: Werner Lemberg <address@hidden>
Commit: Werner Lemberg <address@hidden>

    [ftinspect] Disable unavailable items in anti-aliasing combo box.
    
    * src/ftinspect.h (MainGUI): Make `setDefaults' public.
    (hintingModesTrueTypeHash, hintingModesCFFHash): New maps.
    (hintingModesAlwaysDisabled): New list.
    
    * src/ftinspect.cpp (MainGUI::setDefaults): Set up mappings between
    GUI enumerations and FreeType property values.
    
    Use them to create `hintingModesAlwaysDisabled', a list of enum
    values that gets fed to the anti-alias combo box's `setItemDisabled'
    method.
    (MainGUI::MainGUI): Don't call `setDefaults'
    here but...
    (main): ... here, after FreeType initialization.
---
 ChangeLog         |   18 ++++++++++++++++++
 src/ftinspect.cpp |   39 +++++++++++++++++++++++++++++++++++----
 src/ftinspect.h   |   10 +++++++++-
 3 files changed, 62 insertions(+), 5 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index dcff0e5..3473e1c 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,21 @@
+2016-05-06  Werner Lemberg  <address@hidden>
+
+       [ftinspect] Disable unavailable items in anti-aliasing combo box.
+
+       * src/ftinspect.h (MainGUI): Make `setDefaults' public.
+       (hintingModesTrueTypeHash, hintingModesCFFHash): New maps.
+       (hintingModesAlwaysDisabled): New list.
+
+       * src/ftinspect.cpp (MainGUI::setDefaults): Set up mappings between
+       GUI enumerations and FreeType property values.
+
+       Use them to create `hintingModesAlwaysDisabled', a list of enum
+       values that gets fed to the anti-alias combo box's `setItemDisabled'
+       method.
+       (MainGUI::MainGUI): Don't call `setDefaults'
+       here but...
+       (main): ... here, after FreeType initialization.
+
 2016-05-05  Werner Lemberg  <address@hidden>
 
        [ftinspect] Handle engine properties.
diff --git a/src/ftinspect.cpp b/src/ftinspect.cpp
index 7ea8b14..3a7e143 100644
--- a/src/ftinspect.cpp
+++ b/src/ftinspect.cpp
@@ -308,7 +308,6 @@ MainGUI::MainGUI()
   createMenus();
   createStatusBar();
 
-  setDefaults();
   readSettings();
 
   setUnifiedTitleAndToolBarOnMac(true);
@@ -1086,13 +1085,44 @@ MainGUI::clearStatusBar()
 void
 MainGUI::setDefaults()
 {
-  currentFontIndex = -1;
-
-  // XXX only dummy values right now
+  // set up mappings between property values and combo box indices
+  hintingModesTrueTypeHash[TT_INTERPRETER_VERSION_35] = 
HintingMode_TrueType_v35;
+  hintingModesTrueTypeHash[TT_INTERPRETER_VERSION_38] = 
HintingMode_TrueType_v38;
+  // TT_INTERPRETER_VERSION_40, not yet implemented
+  hintingModesTrueTypeHash[40] = HintingMode_TrueType_v40;
+
+  hintingModesCFFHash[FT_CFF_HINTING_FREETYPE] = HintingMode_CFF_FreeType;
+  hintingModesCFFHash[FT_CFF_HINTING_ADOBE] = HintingMode_CFF_Adobe;
+
+  // make copies and remove existing elements...
+  QHash<int, int> hmTTHash = hintingModesTrueTypeHash;
+  if (hmTTHash.contains(engine->ttInterpreterVersionDefault))
+    hmTTHash.remove(engine->ttInterpreterVersionDefault);
+  if (hmTTHash.contains(engine->ttInterpreterVersionOther))
+    hmTTHash.remove(engine->ttInterpreterVersionOther);
+  if (hmTTHash.contains(engine->ttInterpreterVersionOther1))
+    hmTTHash.remove(engine->ttInterpreterVersionOther1);
+
+  QHash<int, int> hmCFFHash = hintingModesCFFHash;
+  if (hmCFFHash.contains(engine->cffHintingEngineDefault))
+    hmCFFHash.remove(engine->cffHintingEngineDefault);
+  if (hmCFFHash.contains(engine->cffHintingEngineOther))
+    hmCFFHash.remove(engine->cffHintingEngineOther);
+
+  // ... to construct a list of always disabled hinting mode combo box items
+  hintingModesAlwaysDisabled = hmTTHash.values();
+  hintingModesAlwaysDisabled += hmCFFHash.values();
+
+  for (int i = 0; i < hintingModesAlwaysDisabled.size(); i++)
+    hintingModeComboBoxx->setItemEnabled(hintingModesAlwaysDisabled[i],
+                                         false);
 
+  currentFontIndex = -1;
   currentFaceIndex = -1;
   currentInstanceIndex = -1;
 
+  // XXX only dummy values right now
+
   hintingModeComboBoxx->setCurrentIndex(HintingMode_TrueType_v35);
   antiAliasingComboBoxx->setCurrentIndex(AntiAliasing_LCD);
   lcdFilterComboBox->setCurrentIndex(LCDFilter_Light);
@@ -1196,6 +1226,7 @@ main(int argc,
   Engine engine(&gui);
 
   gui.update(&engine);
+  gui.setDefaults();
 
   gui.show();
 
diff --git a/src/ftinspect.h b/src/ftinspect.h
index 7878cbc..5a06039 100644
--- a/src/ftinspect.h
+++ b/src/ftinspect.h
@@ -22,8 +22,10 @@
 #include <QFileDialog>
 #include <QGraphicsView>
 #include <QGridLayout>
+#include <QHash>
 #include <QHBoxLayout>
 #include <QLabel>
+#include <QList>
 #include <QMainWindow>
 #include <QMenu>
 #include <QMenuBar>
@@ -144,6 +146,7 @@ public:
   MainGUI();
   ~MainGUI();
 
+  void setDefaults();
   void update(Engine*);
 
   friend class Engine;
@@ -181,6 +184,7 @@ private:
   int currentFaceIndex;
   int currentInstanceIndex;
 
+  // layout related stuff
   QAction *aboutAct;
   QAction *aboutQtAct;
   QAction *closeFontAct;
@@ -208,6 +212,9 @@ private:
 
   QGridLayout *fontLayout;
 
+  QHash<int, int> hintingModesTrueTypeHash;
+  QHash<int, int> hintingModesCFFHash;
+
   QHBoxLayout *antiAliasingLayout;
   QHBoxLayout *gammaLayout;
   QHBoxLayout *hintingModeLayout;
@@ -225,6 +232,8 @@ private:
   QLabel *sizeLabel;
   QLabel *zoomLabel;
 
+  QList<int> hintingModesAlwaysDisabled;
+
   QLocale *locale;
 
   QMenu *menuFile;
@@ -305,7 +314,6 @@ private:
   void clearStatusBar();
   void createStatusBar();
   void readSettings();
-  void setDefaults();
   void showFont();
   void writeSettings();
 };