commit ea66021

Add exporters

 1@@ -70,6 +70,21 @@ void drawable_initialize(struct wld_drawable * drawable,
 2     drawable->height = height;
 3     drawable->format = format;
 4     drawable->pitch = pitch;
 5+    drawable->exporters = NULL;
 6+}
 7+
 8+void drawable_add_exporter(struct wld_drawable * drawable,
 9+                           struct wld_exporter * exporter)
10+{
11+    exporter->next = drawable->exporters;
12+    drawable->exporters = exporter;
13+}
14+
15+void exporter_initialize(struct wld_exporter * exporter,
16+                         const struct wld_exporter_impl * impl)
17+{
18+    *((const struct wld_exporter_impl **) &exporter->impl) = impl;
19+    exporter->next = NULL;
20 }
21 
22 EXPORT
23@@ -136,6 +151,21 @@ pixman_image_t * wld_map(struct wld_drawable * drawable)
24     return drawable->impl->map(drawable);
25 }
26 
27+EXPORT
28+bool wld_export(struct wld_drawable * drawable,
29+                uint32_t type, union wld_object * object)
30+{
31+    struct wld_exporter * exporter;
32+
33+    for (exporter = drawable->exporters; exporter; exporter = exporter->next)
34+    {
35+        if (exporter->impl->export(exporter, drawable, type, object))
36+            return true;
37+    }
38+
39+    return false;
40+}
41+
42 EXPORT
43 void wld_flush(struct wld_drawable * drawable)
44 {

 1@@ -0,0 +1,33 @@
 2+/* wld: interface/exporter.h
 3+ *
 4+ * Copyright (c) 2013 Michael Forney
 5+ *
 6+ * Permission is hereby granted, free of charge, to any person obtaining a copy
 7+ * of this software and associated documentation files (the "Software"), to deal
 8+ * in the Software without restriction, including without limitation the rights
 9+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10+ * copies of the Software, and to permit persons to whom the Software is
11+ * furnished to do so, subject to the following conditions:
12+ *
13+ * The above copyright notice and this permission notice shall be included in
14+ * all copies or substantial portions of the Software.
15+ *
16+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
22+ * SOFTWARE.
23+ */
24+
25+static void exporter_destroy(struct wld_exporter * exporter);
26+static bool exporter_export(struct wld_exporter * exporter,
27+                            struct wld_drawable * drawable,
28+                            uint32_t type, union wld_object * object);
29+
30+static const struct wld_exporter_impl exporter_impl = {
31+    .destroy = &exporter_destroy,
32+    .export = &exporter_export
33+};
34+

 1@@ -121,6 +121,20 @@ struct wld_drawable_impl
 2     void (* destroy)(struct wld_drawable * drawable);
 3 };
 4 
 5+struct wld_exporter
 6+{
 7+    const struct wld_exporter_impl * const impl;
 8+    struct wld_exporter * next;
 9+};
10+
11+struct wld_exporter_impl
12+{
13+    bool (* export)(struct wld_exporter * exporter,
14+                    struct wld_drawable * drawable,
15+                    uint32_t type, union wld_object * object);
16+    void (* destroy)(struct wld_exporter * exporter);
17+};
18+
19 bool font_ensure_glyph(struct font * font, FT_UInt glyph_index);
20 
21 /**
22@@ -185,5 +199,11 @@ void drawable_initialize(struct wld_drawable * drawable,
23                          uint32_t width, uint32_t height,
24                          uint32_t format, uint32_t pitch);
25 
26+void drawable_add_exporter(struct wld_drawable * drawable,
27+                           struct wld_exporter * exporter);
28+
29+void exporter_initialize(struct wld_exporter * exporter,
30+                         const struct wld_exporter_impl * impl);
31+
32 #endif
33 

 1@@ -150,9 +150,14 @@ struct wld_drawable
 2     unsigned long pitch;
 3     enum wld_format format;
 4 
 5+    struct wld_exporter * exporters;
 6+
 7     const struct wld_drawable_impl * impl;
 8 };
 9 
10+bool wld_export(struct wld_drawable * drawable,
11+                uint32_t type, union wld_object * object);
12+
13 /**
14  * Destroy a drawable (created with any context).
15  */