Initial version rendering 2D path for O3D. This will eventually allow O3D app...

core/cross/cairo/image_2d.h

+/*
+ * Copyright 2010, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+// An alternative class of Transform for 2d Image Rendering Mode.
+
+#ifndef O3D_CORE_CROSS_CAIRO_IMAGE_2D_H_
+#define O3D_CORE_CROSS_CAIRO_IMAGE_2D_H_
+
+#include <vector>
+#include "core/cross/param_object.h"
+#include "core/cross/param.h"
+#include "core/cross/types.h"
+#include "core/cross/param_cache.h"
+#include "core/cross/bounding_box.h"
+#include "core/cross/cairo/texture_cairo.h"
+
+namespace o3d {
+
+class Image2D : public ParamObject {
+  friend class Client;
+ public:
+  typedef WeakPointer<Image2D> WeakPointerType;
+
+  const void* src_data_;
+
+  int src_pitch_;
+
+  int src_width_;
+
+  int src_height_;
+
+  int dest_x_;
+
+  int dest_y_;
+
+  float alpha_;
+
+  float scale_x_;
+
+  float scale_y_;
+
+  float translate_x_;
+
+  float translate_y_;
+
+  // Set the corresponding texture for this Image2D instance.
+  void SetTexture(Texture* texture) {
+    texture_ = down_cast<TextureCairo*>(texture);
+  }
+
+  // Set the transparency of the Image2D.
+  void SetAlpha(float alpha) { alpha_ = alpha; }
+
+  // Set the origin x,y of this Image2D.
+  void SetDest(float x, float y) {
+    dest_x_ = x;
+    dest_y_ = y;
+  }
+
+  // Translate the given x,y from its origin.
+  void Translate(float x, float y) {
+    translate_x_ = x;
+    translate_y_ = y;
+  }
+
+
+  // Scale the image to the given x,y.
+  void Scale(float x, float y) {
+    scale_x_ = x;
+    scale_y_ = y;
+  }
+
+  // Update TextureResource to have the latest data.
+  void updateTextureResource();
+
+  // Gets a weak pointer to us.
+  WeakPointerType GetWeakPointer() const {
+    return weak_pointer_manager_.GetWeakPointer();
+  }
+
+ private:
+  explicit Image2D(ServiceLocator* service_locator);
+
+  friend class IClassManager;
+  static ObjectBase::Ref Create(ServiceLocator* service_locator);
+
+  // Texture Container.
+  TextureCairo* texture_;
+
+  // Caches of Params for rendering.
+  ParamCacheManager param_cache_manager_;
+
+  // Manager for weak pointers to us.
+  WeakPointerType::WeakPointerManager weak_pointer_manager_;
+
+  O3D_DECL_CLASS(Image2D, ParamObject)
+};  // Image2D
+
+}  // namespace o3d
+
+#endif /* O3D_CORE_CROSS_CAIRO_IMAGE_2D_H_ */
+