Torne (Richard Coles) | 46d4c2b | 2014-06-09 12:00:27 +0100 | [diff] [blame] | 1 | // Copyright 2014 The Chromium Authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | #ifndef PPAPI_CPP_COMPOSITOR_LAYER_H_ |
| 6 | #define PPAPI_CPP_COMPOSITOR_LAYER_H_ |
| 7 | |
| 8 | #include "ppapi/c/ppb_compositor_layer.h" |
| 9 | #include "ppapi/cpp/graphics_3d.h" |
| 10 | #include "ppapi/cpp/image_data.h" |
| 11 | #include "ppapi/cpp/rect.h" |
| 12 | #include "ppapi/cpp/resource.h" |
| 13 | #include "ppapi/cpp/size.h" |
| 14 | |
| 15 | namespace pp { |
| 16 | |
| 17 | class CompositorLayer : public Resource { |
| 18 | public: |
| 19 | /// Default constructor for creating an is_null() |
| 20 | /// <code>CompositorLayer</code> object. |
| 21 | CompositorLayer(); |
| 22 | |
| 23 | /// The copy constructor for <code>CompositorLayer</code>. |
| 24 | /// |
| 25 | /// @param[in] other A reference to a <code>CompositorLayer</code>. |
| 26 | CompositorLayer(const CompositorLayer& other); |
| 27 | |
| 28 | /// Constructs a <code>CompositorLayer</code> from a <code>Resource</code>. |
| 29 | /// |
| 30 | /// @param[in] resource A <code>PPB_CompositorLayer</code> resource. |
| 31 | explicit CompositorLayer(const Resource& resource); |
| 32 | |
| 33 | /// A constructor used when you have received a <code>PP_Resource</code> as a |
| 34 | /// return value that has had 1 ref added for you. |
| 35 | /// |
| 36 | /// @param[in] resource A <code>PPB_CompositorLayer</code> resource. |
| 37 | CompositorLayer(PassRef, PP_Resource resource); |
| 38 | |
| 39 | /// Destructor. |
| 40 | ~CompositorLayer(); |
| 41 | |
| 42 | /// Sets the color of a solid color layer. If the layer is uninitialized, it |
| 43 | /// will initialize the layer first, and then set its color. If the layer has |
| 44 | /// been initialized to another kind of layer, the layer will not be changed, |
| 45 | /// and <code>PP_ERROR_BADARGUMENT</code> will be returned. |
| 46 | /// |
| 47 | /// param[in] red A <code>float</code> for the red color component. It will be |
| 48 | /// clamped to [0, 1] |
| 49 | /// param[in] green A <code>float</code> for the green color component. |
| 50 | /// It will be clamped to [0, 1]. |
| 51 | /// param[in] blue A <code>float</code> for the blue color component. It will |
| 52 | /// be clamped to [0, 1]. |
| 53 | /// param[in] alpha A <code>float</code> for the alpha color component. |
| 54 | /// It will be clamped to [0, 1]. |
| 55 | /// param[in] size A <code>Size</code> for the size of the layer before |
| 56 | /// transform. |
| 57 | /// |
| 58 | /// @return An int32_t containing a result code from <code>pp_errors.h</code>. |
| 59 | int32_t SetColor(float red, |
| 60 | float green, |
| 61 | float blue, |
| 62 | float alpha, |
| 63 | const Size& size); |
| 64 | |
| 65 | /// Sets the texture of a texture layer. If the layer is uninitialized, it |
| 66 | /// will initialize the layer first, and then set its texture. The source rect |
| 67 | /// will be set to ((0, 0), (1, 1)). If the layer has been initialized to |
| 68 | /// another kind of layer, the layer will not be changed, and |
| 69 | /// <code>PP_ERROR_BADARGUMENT</code> will be returned. |
| 70 | /// |
| 71 | /// param[in] context A <code>Graphics3D</code> corresponding to a graphics 3d |
| 72 | /// resource which owns the GL texture. |
Torne (Richard Coles) | 6e8cce6 | 2014-08-19 13:00:08 +0100 | [diff] [blame] | 73 | /// param[in] target GL texture target (GL_TEXTURE_2D, etc). |
Torne (Richard Coles) | 46d4c2b | 2014-06-09 12:00:27 +0100 | [diff] [blame] | 74 | /// param[in] texture A GL texture object id. |
| 75 | /// param[in] size A <code>Size</code> for the size of the layer before |
| 76 | /// transform. |
| 77 | /// param[in] cc A <code>CompletionCallback</code> to be called when |
| 78 | /// the texture is released by Chromium compositor. |
| 79 | /// |
| 80 | /// @return An int32_t containing a result code from <code>pp_errors.h</code>. |
| 81 | int32_t SetTexture(const Graphics3D& context, |
Torne (Richard Coles) | 6e8cce6 | 2014-08-19 13:00:08 +0100 | [diff] [blame] | 82 | uint32_t target, |
Torne (Richard Coles) | 46d4c2b | 2014-06-09 12:00:27 +0100 | [diff] [blame] | 83 | uint32_t texture, |
| 84 | const Size& size, |
| 85 | const CompletionCallback& cc); |
| 86 | |
| 87 | /// Sets the image of an image layer. If the layer is uninitialized, it will |
| 88 | /// initiliaze the layer first, and then set the image of it. If the layer has |
| 89 | /// been initialized to another kind of layer, the layer will not be changed, |
| 90 | /// and <code>PP_ERROR_BADARGUMENT</code> will be returned. |
| 91 | /// |
| 92 | /// param[in] image_data A <code>PP_Resource</code> corresponding to an image |
| 93 | /// data resource. |
| 94 | /// param[in] cc A <code>CompletionCallback</code> to be called when |
| 95 | /// the image data is released by Chromium compositor. |
| 96 | /// |
| 97 | /// @return An int32_t containing a result code from <code>pp_errors.h</code>. |
| 98 | int32_t SetImage(const ImageData& image, |
| 99 | const CompletionCallback& callback); |
| 100 | |
| 101 | /// Sets the image of an image layer. If the layer is uninitialized, it will |
| 102 | /// initialize the layer first, and then set its image. The layer size will |
| 103 | /// be set to the image's size. The source rect will be set to the full image. |
| 104 | /// If the layer has been initialized to another kind of layer, the layer will |
| 105 | /// not be changed, and <code>PP_ERROR_BADARGUMENT</code> will be returned. |
| 106 | /// |
| 107 | /// param[in] image_data A <code>ImageData</code> corresponding to an image |
| 108 | /// data resource. |
| 109 | /// param[in] size A <code>Size</code> for the size of the layer before |
| 110 | /// transform. |
| 111 | /// param[in] cc A <code>CompletionCallback</code> to be called when the image |
| 112 | /// data is released by Chromium compositor. |
| 113 | /// |
| 114 | /// @return An int32_t containing a result code from <code>pp_errors.h</code>. |
| 115 | int32_t SetImage(const ImageData& image, |
| 116 | const Size& size, |
| 117 | const CompletionCallback& callback); |
| 118 | |
| 119 | /// Sets a clip rectangle for a compositor layer. The Chromium compositor |
| 120 | /// applies a transform matrix on the layer first, and then clips the layer |
| 121 | /// with the rectangle. |
| 122 | /// |
| 123 | /// param[in] rect The clip rectangle. The origin is top-left corner of |
| 124 | /// the plugin. |
| 125 | /// |
| 126 | /// @return An int32_t containing a result code from <code>pp_errors.h</code>. |
| 127 | int32_t SetClipRect(const Rect& rect); |
| 128 | |
| 129 | /// Sets a transform matrix which is used to composite the layer. |
| 130 | /// |
| 131 | /// param[in] matrix A float array with 16 elements. The matrix is coloum |
| 132 | /// major. The default transform matrix is an identity matrix. |
| 133 | /// |
| 134 | /// @return An int32_t containing a result code from <code>pp_errors.h</code>. |
| 135 | int32_t SetTransform(const float matrix[16]); |
| 136 | |
| 137 | /// Sets the opacity value which will be applied to the layer. The effective |
| 138 | /// value of each pixel is computed as: |
| 139 | /// |
| 140 | /// if (premult_alpha) |
| 141 | /// pixel.rgb = pixel.rgb * opacity; |
| 142 | /// pixel.a = pixel.a * opactiy; |
| 143 | /// |
| 144 | /// param[in] opacity A <code>float</code> for the opacity value. |
| 145 | /// The default value is 1.0f. |
| 146 | /// |
| 147 | ///@return An int32_t containing a result code from <code>pp_errors.h</code>. |
| 148 | int32_t SetOpacity(float opacity); |
| 149 | |
| 150 | /// Sets the blend mode which is used to composite the layer. |
| 151 | /// |
| 152 | /// param[in] mode A <code>PP_BlendMode</code>. The default value is |
| 153 | /// <code>PP_BLENDMODE_SRC_OVER</code>. |
| 154 | /// |
| 155 | /// @return An int32_t containing a result code from <code>pp_errors.h</code>. |
| 156 | int32_t SetBlendMode(PP_BlendMode mode); |
| 157 | |
| 158 | /// Sets a source rectangle for a texture layer or an image layer. |
| 159 | /// |
| 160 | /// param[in] rect A <code>FloatRect</code> for an area of the source to |
| 161 | /// consider. For a texture layer, rect is in uv coordinates. For an image |
| 162 | /// layer, rect is in pixels. If the rect is beyond the dimensions of the |
| 163 | /// texture or image, <code>PP_ERROR_BADARGUMENT</code> will be returned. |
| 164 | /// If the layer size does not match the source rect size, bilinear scaling |
| 165 | /// will be used. |
| 166 | /// |
| 167 | /// @return An int32_t containing a result code from <code>pp_errors.h</code>. |
| 168 | int32_t SetSourceRect(const FloatRect& rect); |
| 169 | |
| 170 | /// Sets the premultiplied alpha for an texture layer. |
| 171 | /// |
| 172 | /// param[in] premult A <code>bool</code> with <code>true</code> if |
| 173 | /// pre-multiplied alpha is used. |
| 174 | /// |
| 175 | /// @return An int32_t containing a result code from <code>pp_errors.h</code>. |
| 176 | int32_t SetPremultipliedAlpha(bool premult); |
| 177 | |
| 178 | /// Checks whether a <code>Resource</code> is a compositor layer, to test |
| 179 | /// whether it is appropriate for use with the <code>CompositorLayer</code> |
| 180 | /// constructor. |
| 181 | /// |
| 182 | /// @param[in] resource A <code>Resource</code> to test. |
| 183 | /// |
| 184 | /// @return True if <code>resource</code> is a compositor layer. |
| 185 | static bool IsCompositorLayer(const Resource& resource); |
| 186 | }; |
| 187 | |
| 188 | } // namespace pp |
| 189 | |
| 190 | #endif // PPAPI_CPP_COMPOSITOR_LAYER_H_ |