Adding upstream version 1.3+ds.upstream/1.3+dsupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 113 insertions, 0 deletions

diff --git a/src/util/object-renderer.h b/src/util/object-renderer.h
new file mode 100644
index 0000000..98f8890
--- /dev/null
+++ b/src/util/object-renderer.h
@@ -0,0 +1,113 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+#ifndef SEEN_OBJECT_RENDERER_H
+#define SEEN_OBJECT_RENDERER_H
+
+#include <cairomm/refptr.h>
+#include <cairomm/surface.h>
+#include <gdkmm/rgba.h>
+#include <glibmm/ustring.h>
+#include <memory>
+#include <optional>
+#include "display/drawing.h"
+#include "object/sp-object.h"
+#include "document.h"
+
+namespace Inkscape {
+
+class object_renderer {
+public:
+    object_renderer();
+
+    struct options {
+        options() {}
+        // foreground color, where used
+        options& foreground(Gdk::RGBA fg) {
+            _foreground = fg;
+            return *this;
+        }
+        // background color, where used
+        options& solid_background(uint32_t bg, double margin, double corner_radius = 0) {
+            _add_background = true;
+            _background = bg;
+            _margin = margin;
+            _radius = corner_radius;
+            return *this;
+        }
+        // use checkerboard pattern for drawing background
+        options& checkerboard(uint32_t color) {
+            _checkerboard = color;
+            return *this;
+        }
+        // option to add an outline to rendered image
+        options& frame(uint32_t rgba, double thickness = 1) {
+            _stroke = thickness;
+            _draw_frame = true;
+            _frame_rgba = rgba;
+            return *this;
+        }
+        // option to reduce opacity of rendered image
+        options& image_opacity(double alpha) {
+            _image_opacity = alpha;
+            return *this;
+        }
+        // for symbols only: take style from <use> element
+        options& symbol_style_from_use(bool from_use_element = true) {
+            _symbol_style_from_use = from_use_element;
+            return *this;
+        }
+
+    private:
+        friend class object_renderer;
+        Gdk::RGBA _foreground;
+        bool _add_background = false;
+        uint32_t _background;
+        double _margin = 0;
+        double _radius = 0;
+        bool _symbol_style_from_use = false;
+        bool _draw_frame = false;
+        double _stroke = 0;
+        uint32_t _frame_rgba = 0;
+        double _image_opacity = 1;
+        std::optional<uint32_t> _checkerboard;
+    };
+
+    Cairo::RefPtr<Cairo::Surface> render(SPObject& object, double width, double height, double device_scale, options options = {});
+
+private:
+    std::unique_ptr<SPDocument> _symbol_document;
+    std::unique_ptr<SPDocument> _sandbox;
+};
+
+// Place 'image' on a solid background with given color optinally adding border.
+// If no image is provided, only background surface will be created.
+Cairo::RefPtr<Cairo::Surface> add_background_to_image(Cairo::RefPtr<Cairo::Surface> image, uint32_t rgb, double margin, double radius, int device_scale, std::optional<uint32_t> border = std::optional<uint32_t>());
+
+/**
+ * Returns a new document containing default start, mid, and end markers.
+ * Note 1: group IDs are matched against "group_id" to render correct preview object.
+ * Note 2: paths/lines are kept outside of groups, so they don't inflate visible bounds
+ * Note 3: invisible rects inside groups keep visual bounds from getting too small, so we can see relative marker sizes
+ */
+std::unique_ptr<SPDocument> ink_markers_preview_doc(const Glib::ustring& group_id);
+
+/**
+ * Creates a copy of the marker named mname, determines its visible and renderable
+ * area in the bounding box, and then renders it. This allows us to fill in
+ * preview images of each marker in the marker combobox.
+ */
+Cairo::RefPtr<Cairo::Surface> create_marker_image(
+    const Glib::ustring& group_id,
+    SPDocument* _sandbox,
+    Gdk::RGBA marker_color,
+    Geom::IntPoint pixel_size,
+    const char* mname,
+    SPDocument* source,
+    Inkscape::Drawing& drawing,
+    std::optional<guint32> checkerboard,
+    bool no_clip,
+    double scale,
+    int device_scale);
+
+} // namespace
+
+#endif // SEEN_OBJECT_RENDERER_H