Merge pull request #178 from inkyblackness/combo

Combo

Widgets.go

@@ -6,6 +6,7 @@ import "C"
 import (
 	"fmt"
 	"math"
+	"strings"
 )
 
 // Text adds formatted text. See PushTextWrapPosV() or PushStyleColorV() for modifying the output.
@@ -210,6 +211,24 @@ func EndCombo() {
 	C.iggEndCombo()
 }
 
+// Combo calls ComboV(id, value, list, -1).
+func Combo(id string, value *int32, list []string) bool {
+	return ComboV(id, value, list, -1)
+}
+
+// ComboV is a helper over BeginCombo()/EndCombo() which are kept available for convenience purpose.
+// This is analogous to how ListBox are created.
+func ComboV(id string, value *int32, list []string, heightInItems int) bool {
+	valueArg, valueFin := wrapInt32(value)
+	defer valueFin()
+	return C.iggCombo(
+		C.CString(id),
+		valueArg,
+		C.CString(strings.Join(list, string(byte(0)))+string(byte(0))),
+		(C.int)(heightInItems),
+	) != 0
+}
+
 // SliderFlags for DragFloat(), DragInt(), SliderFloat(), SliderInt() etc.
 // We use the same sets of flags for DragXXX() and SliderXXX() functions as the features are the same and it makes it easier to swap them.
 type SliderFlags int

wrapper/Widgets.cpp

@@ -82,6 +82,11 @@ void iggEndCombo(void)
    ImGui::EndCombo();
 }
 
+IggBool iggCombo(char const *label, int *currentItem, char const *itemsSeparatedByZeros, int heightInItems)
+{
+   return ImGui::Combo(label, currentItem, itemsSeparatedByZeros, heightInItems);
+}
+
 IggBool iggDragFloat(char const *label, float *value, float speed, float min, float max, char const *format, int flags)
 {
    return ImGui::DragFloat(label, value, speed, min, max, format, flags) ? 1 : 0;

wrapper/Widgets.h

@@ -25,6 +25,7 @@ extern void iggProgressBar(float fraction, IggVec2 const *size, char const *over
 
 extern IggBool iggBeginCombo(char const *label, char const *previewValue, int flags);
 extern void iggEndCombo(void);
+extern IggBool iggCombo(char const *label, int *currentItem, char const *itemsSeparatedByZeros, int heightInItems);
 
 extern IggBool iggDragFloat(char const *label, float *value, float speed, float min, float max, char const *format, int flags);
 extern IggBool iggDragFloatN(char const *label, float *value, int n, float speed, float min, float max, char const *format, int flags);