Merge pull request #120 from fsomers/fontconfig-set-name

Add support for setting a FontConfig name

FontConfig.go

@@ -90,6 +90,19 @@ func (config FontConfig) SetMergeMode(value bool) {
 	}
 }
 
+// SetName sets a short display name for a font, for diagnostic purposes.
+// If the FontConfig does not provide a name, one will be synthesized for
+// fonts which are added from files.  When adding fonts from memory, this
+// method can be used to provide a name.
+// The name will be truncated if it is longer than the limit supported by imgui.
+func (config FontConfig) SetName(name string) {
+	if config != DefaultFontConfig {
+		nameArg, nameFin := wrapString(name)
+		defer nameFin()
+		C.iggFontConfigSetName(config.handle(), nameArg)
+	}
+}
+
 // getFontDataOwnedByAtlas gets the current ownership status of the font data.
 func (config FontConfig) getFontDataOwnedByAtlas() bool {
 	if config != DefaultFontConfig {

wrapper/FontConfig.cpp

@@ -56,6 +56,14 @@ void iggFontConfigSetMergeMode(IggFontConfig handle, IggBool value)
    fontConfig->MergeMode = value;
 }
 
+void iggFontConfigSetName(IggFontConfig handle, char const *value)
+{
+   ImFontConfig *fontConfig = reinterpret_cast<ImFontConfig *>(handle);
+   const size_t bufSize = sizeof(fontConfig->Name);
+   strncpy(fontConfig->Name, value, bufSize - 1);
+   fontConfig->Name[bufSize - 1] = '\0';
+}
+
 int iggFontConfigGetFontDataOwnedByAtlas(IggFontConfig handle)
 {
    ImFontConfig *fontConfig = reinterpret_cast<ImFontConfig *>(handle);

wrapper/FontConfig.h

@@ -16,6 +16,7 @@ extern void iggFontConfigSetPixelSnapH(IggFontConfig handle, IggBool value);
 extern void iggFontConfigSetGlyphMinAdvanceX(IggFontConfig handle, float value);
 extern void iggFontConfigSetGlyphMaxAdvanceX(IggFontConfig handle, float value);
 extern void iggFontConfigSetMergeMode(IggFontConfig handle, IggBool value);
+extern void iggFontConfigSetName(IggFontConfig handle, char const *value);
 extern int iggFontConfigGetFontDataOwnedByAtlas(IggFontConfig handle);
 
 #ifdef __cplusplus