1 files changed, 139 insertions, 0 deletions
diff --git a/src/sp-gradient-test.cpp b/src/sp-gradient-test.cpp
new file mode 100644
index 000000000..051beb928
--- /dev/null
+++ b/src/sp-gradient-test.cpp
@@ -0,0 +1,139 @@
+#include "attributes.h"
+#include "inkscape-private.h"
+#include "sp-gradient.h"
+#include "sp-object.h"
+#include "document.h"
+#include "libnr/nr-matrix.h"
+#include "libnr/nr-matrix-fns.h"
+#include "libnr/nr-matrix-ops.h"
+#include "libnr/nr-rect.h"
+#include "libnr/nr-rotate-fns.h"
+#include "svg/svg.h"
+#include "utest/utest.h"
+#include "xml/repr.h"
+
+/// Dummy functions to keep linker happy
+int sp_main_gui (int, char const**) { return 0; }
+int sp_main_console (int, char const**) { return 0; }
+
+static bool
+test_gradient()
+{
+    utest_start("gradient");
+    UTEST_TEST("init") {
+        SPGradient *gr = static_cast<SPGradient *>(g_object_new(SP_TYPE_GRADIENT, NULL));
+        UTEST_ASSERT(gr->gradientTransform.test_identity());
+        UTEST_ASSERT(gr->gradientTransform == NR::identity());
+        g_object_unref(gr);
+    }
+
+    /* Create the global inkscape object. */
+    static_cast<void>(g_object_new(inkscape_get_type(), NULL));
+
+
+    SPDocument *doc = sp_document_new_dummy();
+
+    UTEST_TEST("sp_object_set(\"gradientTransform\")") {
+        SPGradient *gr = static_cast<SPGradient *>(g_object_new(SP_TYPE_GRADIENT, NULL));
+        SP_OBJECT(gr)->document = doc;
+        sp_object_set(SP_OBJECT(gr), SP_ATTR_GRADIENTTRANSFORM, "translate(5, 8)");
+        UTEST_ASSERT(gr->gradientTransform == NR::Matrix(NR::translate(5, 8)));
+        sp_object_set(SP_OBJECT(gr), SP_ATTR_GRADIENTTRANSFORM, "");
+        UTEST_ASSERT(gr->gradientTransform == NR::identity());
+        sp_object_set(SP_OBJECT(gr), SP_ATTR_GRADIENTTRANSFORM, "rotate(90)");
+        UTEST_ASSERT(gr->gradientTransform == NR::Matrix(rotate_degrees(90)));
+        g_object_unref(gr);
+    }
+
+    UTEST_TEST("write") {
+        SPGradient *gr = static_cast<SPGradient *>(g_object_new(SP_TYPE_GRADIENT, NULL));
+        SP_OBJECT(gr)->document = doc;
+        sp_object_set(SP_OBJECT(gr), SP_ATTR_GRADIENTTRANSFORM, "matrix(0, 1, -1, 0, 0, 0)");
+        Inkscape::XML::Node *repr = sp_repr_new("svg:radialGradient");
+        SP_OBJECT(gr)->updateRepr(repr, SP_OBJECT_WRITE_ALL);
+        {
+            gchar const *tr = repr->attribute("gradientTransform");
+            NR::Matrix svd;
+            bool const valid = sp_svg_transform_read(tr, &svd);
+            UTEST_ASSERT(valid);
+            UTEST_ASSERT(svd == NR::Matrix(rotate_degrees(90)));
+        }
+        g_object_unref(gr);
+    }
+
+    UTEST_TEST("get_g2d, get_gs2d, set_gs2d") {
+        SPGradient *gr = static_cast<SPGradient *>(g_object_new(SP_TYPE_GRADIENT, NULL));
+        SP_OBJECT(gr)->document = doc;
+        NR::Matrix const grXform(2, 1,
+                                 1, 3,
+                                 4, 6);
+        gr->gradientTransform = grXform;
+        NR::Rect const unit_rect(NR::Point(0, 0), NR::Point(1, 1));
+        {
+            NR::Matrix const g2d(sp_gradient_get_g2d_matrix(gr, NR::identity(), unit_rect));
+            NR::Matrix const gs2d(sp_gradient_get_gs2d_matrix(gr, NR::identity(), unit_rect));
+            UTEST_ASSERT(g2d == NR::identity());
+            UTEST_ASSERT(NR::matrix_equalp(gs2d, gr->gradientTransform * g2d, 1e-12));
+
+            sp_gradient_set_gs2d_matrix(gr, NR::identity(), unit_rect, gs2d);
+            UTEST_ASSERT(NR::matrix_equalp(gr->gradientTransform, grXform, 1e-12));
+        }
+
+        gr->gradientTransform = grXform;
+        NR::Matrix const funny(2, 3,
+                               4, 5,
+                               6, 7);
+        {
+            NR::Matrix const g2d(sp_gradient_get_g2d_matrix(gr, funny, unit_rect));
+            NR::Matrix const gs2d(sp_gradient_get_gs2d_matrix(gr, funny, unit_rect));
+            UTEST_ASSERT(g2d == funny);
+            UTEST_ASSERT(NR::matrix_equalp(gs2d, gr->gradientTransform * g2d, 1e-12));
+
+            sp_gradient_set_gs2d_matrix(gr, funny, unit_rect, gs2d);
+            UTEST_ASSERT(NR::matrix_equalp(gr->gradientTransform, grXform, 1e-12));
+        }
+
+        gr->gradientTransform = grXform;
+        NR::Rect const larger_rect(NR::Point(5, 6), NR::Point(8, 10));
+        {
+            NR::Matrix const g2d(sp_gradient_get_g2d_matrix(gr, funny, larger_rect));
+            NR::Matrix const gs2d(sp_gradient_get_gs2d_matrix(gr, funny, larger_rect));
+            UTEST_ASSERT(g2d == NR::Matrix(3, 0,
+                                           0, 4,
+                                           5, 6) * funny);
+            UTEST_ASSERT(NR::matrix_equalp(gs2d, gr->gradientTransform * g2d, 1e-12));
+
+            sp_gradient_set_gs2d_matrix(gr, funny, larger_rect, gs2d);
+            UTEST_ASSERT(NR::matrix_equalp(gr->gradientTransform, grXform, 1e-12));
+
+            sp_object_set(SP_OBJECT(gr), SP_ATTR_GRADIENTUNITS, "userSpaceOnUse");
+            NR::Matrix const user_g2d(sp_gradient_get_g2d_matrix(gr, funny, larger_rect));
+            NR::Matrix const user_gs2d(sp_gradient_get_gs2d_matrix(gr, funny, larger_rect));
+            UTEST_ASSERT(user_g2d == funny);
+            UTEST_ASSERT(NR::matrix_equalp(user_gs2d, gr->gradientTransform * user_g2d, 1e-12));
+        }
+        g_object_unref(gr);
+    }
+
+    return utest_end();
+}
+
+int main()
+{
+    g_type_init();
+    Inkscape::GC::init();
+    return ( test_gradient()
+             ? EXIT_SUCCESS
+             : EXIT_FAILURE );
+}
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :