Started TableModel: converted TableValue.

tablemodel.go

@@ -0,0 +1,101 @@
+// 24 august 2018
+
+package ui
+
+// #include <stdlib.h>
+// #include "ui.h"
+// #include "util.h"
+// extern int doTableModelNumColumns(uiTableModelHandler *, uiTableModel *);
+// extern uiTableValueType doTableModelColumnType(uiTableModelHandler *, uiTableModel *, int);
+// extern int doTableModelNumRows(uiTableModelHandler *, uiTableModel *);
+// extern uiTableValue *doTableModelCellValue(uiTableModelHandler *mh, uiTableModel *m, int row, int column);
+// extern void doTableModelSetCellValue(uiTableModelHandler *, uiTableModel *, int, int, const uiTableValue *);
+// static inline uiTableModelHandler *allocTableModelHandler(void)
+// {
+// 	uiTableModelHandler *mh;
+// 
+// 	mh = (uiTableModelHandler *) pkguiAlloc(sizeof (uiTableModelHandler));
+// 	mh->NumColumns = doTableModelNumColumns;
+// 	mh->ColumnType = doTableModelColumnType;
+// 	mh->NumRows = doTableModelNumRows;
+// 	mh->CellValue = doTableModelCellValue;
+// 	mh->SetCellValue = doTableModelSetCellValue;
+// 	return mh;
+// }
+// static inline void freeTableModelHandler(uiTableModelHandler *mh)
+// {
+// 	free(mh);
+// }
+import "C"
+
+// TableValue is a type that represents a piece of data that can come
+// out of a TableModel.
+type TableValue interface {
+	toLibui() *C.uiTableValue
+}
+
+// TableString is a TableValue that stores a string. TableString is
+// used for displaying text in a Table.
+type TableString string
+
+func (s TableString) toLibui() *C.uiTableValue {
+	cs := C.CString(string(s))
+	defer freestr(cs)
+	return C.uiNewTableValueString(cs)
+}
+
+// TableImage is a TableValue that represents an Image. Ownership
+// of the Image is not copied; you must keep it alive alongside the
+// TableImage.
+type TableImage struct {
+	I	*Image
+}
+
+func (i TableImage) toLibui() *C.uiTableValue {
+	return C.uiNewTableValueImage(i.I.i)
+}
+
+// TableInt is a TableValue that stores integers. These are used for
+// progressbars. Due to current limitations of libui, they also
+// represent checkbox states, via TableFalse and TableTrue.
+type TableInt int
+
+// TableFalse and TableTrue are the Boolean constants for TableInt.
+const (
+	TableFalse TableInt = 0
+	TableTrue TableInt = 1
+)
+
+func (i TableInt) toLibui() *C.uiTableValue {
+	return C.uiNewTableValueInt(C.int(i))
+}
+
+// TableColor is a TableValue that represents a color.
+type TableColor struct {
+	R	float64
+	G	float64
+	B	float64
+	A	float64
+}
+
+func (c TableColor) toLibui() *C.uiTableValue {
+	return C.uiNewTableValueColor(C.double(c.R), C.double(c.G), C.double(c.B), C.double(c.A))
+}
+
+func tableValueFromLibui(value *C.uiTableValue) TableValue {
+	if value == nil {
+		return nil
+	}
+	switch C.uiTableValueGetType(value) {
+	case C.uiTableValueTypeString:
+		cs := C.uiTableValueString(value)
+		return TableString(C.GoString(cs))
+	case C.uiTableValueTypeImage:
+		panic("TODO")
+	case C.uiTableValueTypeInt:
+		return TableInt(C.uiTableValueInt(value))
+	case C.uiTableValueTypeColor:
+		panic("TODO")
+	}
+	panic("unreachable")
+}