1 files changed, 85 insertions, 0 deletions
diff --git a/go-poppler/utils.go b/go-poppler/utils.go
new file mode 100644
index 0000000..4bda53a
--- /dev/null
+++ b/go-poppler/utils.go
@@ -0,0 +1,85 @@
+package poppler
+
+// #cgo pkg-config: poppler-glib
+// #include <poppler.h>
+// #include <glib.h>
+// #include <unistd.h>
+// #include <stdlib.h>
+import "C"
+
+import "unsafe"
+
+func toString(in *C.gchar) string {
+	return C.GoString((*C.char)(in))
+}
+
+func toBool(in C.gboolean) bool {
+	return  int(in) > 0
+}
+
+/* convert a Quad struct to a GArray */
+func quadsToGArray(quads []Quad) *C.GArray {
+	garray := C.g_array_new(C.FALSE, C.FALSE, C.sizeof_PopplerQuadrilateral)
+
+	for _, quad := range quads {
+		item := C.PopplerQuadrilateral{
+			p1: C.PopplerPoint{
+				x: C.double(quad.P1.X),
+				y: C.double(quad.P1.Y),
+			},
+			p2: C.PopplerPoint{
+				x: C.double(quad.P2.X),
+				y: C.double(quad.P2.Y),
+			},
+			p3: C.PopplerPoint{
+				x: C.double(quad.P3.X),
+				y: C.double(quad.P3.Y),
+			},
+			p4: C.PopplerPoint{
+				x: C.double(quad.P4.X),
+				y: C.double(quad.P4.Y),
+			},
+		}
+
+		C.g_array_append_vals(garray, C.gconstpointer(&item),1)
+	}
+
+	return garray
+}
+
+/* convert a GArray to a quad */
+func gArrayToQuads(q *C.GArray) []Quad {
+	length := int(q.len)
+
+	quads := make([]Quad, length)
+
+	for i := 0; i < length; i++ {
+		item := (*C.PopplerQuadrilateral)(unsafe.Pointer(uintptr(unsafe.Pointer(q.data)) + uintptr(i)*unsafe.Sizeof(C.PopplerQuadrilateral{})))
+		quads[i] = Quad{
+			P1: Point{X: float64(item.p1.x), Y: float64(item.p1.y)},
+			P2: Point{X: float64(item.p2.x), Y: float64(item.p2.y)},
+			P3: Point{X: float64(item.p3.x), Y: float64(item.p3.y)},
+			P4: Point{X: float64(item.p4.x), Y: float64(item.p4.y)},
+		}
+	}
+
+	return quads
+}
+
+func rectangleToPopplerRectangle (r Rectangle) C.PopplerRectangle {
+	var pRect C.PopplerRectangle
+
+	pRect.x1 = C.double(r.X1)
+	pRect.y1 = C.double(r.Y1)
+	pRect.x2 = C.double(r.X2)
+	pRect.y2 = C.double(r.Y2)
+
+	return pRect
+}
+
+func rectEq(r1 Rectangle, r2 Rectangle) bool {
+	return r1.X1 == r2.X1 &&
+		r1.X2 == r2.X2 &&
+		r1.Y1 == r2.Y1 &&
+		r1.Y2 == r2.Y2
+}