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docs: c and c++ apis docs improved

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Mira Grudzinska 2021-10-04 02:12:37 +02:00 • committed by Hermet Park
parent 78b5ee4234
commit dc55070ba7
2 changed files with 50 additions and 45 deletions
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24
inc/thorvg.h
View file

@ -3,7 +3,7 @@
*
* The main APIs enabling the TVG initialization, preparation of the canvas and provisioning of its content:
* - drawing shapes such as line, curve, arc, rectangle, circle or user-defined
* - drawing pictures - SVG, PNG, RAW
* - drawing pictures - SVG, PNG, JPG, RAW
* - solid or gradient filling
* - continuous and dashed stroking
* - clipping and masking
@ -455,7 +455,7 @@ public:
*
* Only pushed paints in the canvas will be drawing targets.
* They are retained by the canvas until you call Canvas::clear().
* If you know the number of the pushed objects in the advance, please call Canvas::reserve().
* If you know the number of the pushed objects in advance, please call Canvas::reserve().
*
* @param[in] paint A Paint object to be drawn.
*
@ -545,7 +545,9 @@ public:
* @param[in] x2 The horizontal coordinate of the second point used to determine the gradient bounds.
* @param[in] y2 The vertical coordinate of the second point used to determine the gradient bounds.
*
* @return Result::Success when succeed, Result::InvalidArguments otherwise.
* @return Result::Success when succeed.
*
* @note In case the first and the second points are equal, an object filled with such a gradient fill is not rendered.
*/
Result linear(float x1, float y1, float x2, float y2) noexcept;
@ -596,7 +598,7 @@ public:
* @param[in] cy The vertical coordinate of the center of the bounding circle.
* @param[in] radius The radius of the bounding circle.
*
* @return Result::Success when succeed, Result::InvalidArguments otherwise.
* @return Result::Success when succeed, Result::InvalidArguments in case the @p radius value is zero or less.
*/
Result radial(float cx, float cy, float radius) noexcept;
@ -829,9 +831,8 @@ public:
*
* @retval Result::Success When succeed.
* @retval Result::FailedAllocation An internal error with a memory allocation for an object to be dashed.
* @retval Result::InvalidArguments In case that either @p dashPattern is @c nullptr or @p cnt is zero.
* @retval Result::InvalidArguments In case @p dashPattern is @c nullptr and @p cnt > 0, @p cnt is zero, any of the dash pattern values is zero or less.
*
* @note If any of the dash pattern values is zero, this function has no effect.
* @note To reset the stroke dash pattern, pass @c nullptr to @p dashPattern and zero to @p cnt.
* @warning @p cnt must be greater than 1 if the dash pattern is valid.
*/
@ -889,7 +890,7 @@ public:
/**
* @brief Sets the fill rule for the Shape object.
*
* @param[in] r The fill rule value.
* @param[in] r The fill rule value. The default value is @c FillRule::Winding.
*
* @return Result::Success when succeed.
*/
@ -1002,7 +1003,7 @@ public:
/**
* @class Picture
*
* @brief A class representing an image read in one of the supported formats: raw, svg, png and etc.
* @brief A class representing an image read in one of the supported formats: raw, svg, png, jpg and etc.
* Besides the methods inherited from the Paint, it provides methods to load & draw images on the canvas.
*
* @note Supported formats are depended on the available TVG loaders.
@ -1144,9 +1145,9 @@ public:
/**
* @brief Passes drawing elements to the Scene using Paint objects.
*
* Only pushed paints in the scene will be drawing targets.
* They are retained by the scene until you call Scene::clear().
* If you know the number of the pushed objects in the advance, please call Scene::reserve().
* Only the paints pushed into the scene will be the drawn targets.
* The paints are retained by the scene until Scene::clear() is called.
* If you know the number of the pushed objects in advance, please call Scene::reserve().
*
* @param[in] paint A Paint object to be drawn.
*
@ -1178,7 +1179,6 @@ public:
* @return Result::Success when succeed
*
* @warning If you don't free the paints they become dangled. They are supposed to be reused, otherwise you are responsible for their lives. Thus please use the @p free argument only when you know how it works, otherwise it's not recommended.
* @warning Please do not use it, this API is not official one. It could be modified in the next version.
*
* @since 0.2
*/

69
src/bindings/capi/thorvg_capi.h
View file

@ -11,7 +11,7 @@
* - scene graph & affine transformation (translation, rotation, scale, ...)
* - stroking: width, join, cap, dash
* - composition: blending, masking, path clipping
* - pictures: SVG, PNG, bitmap
* - pictures: SVG, PNG, JPG, bitmap
*
*/
@ -460,7 +460,7 @@ TVG_EXPORT Tvg_Result tvg_canvas_destroy(Tvg_Canvas* canvas);
*
* Only the paints pushed into the canvas will be drawing targets.
* They are retained by the canvas until you call tvg_canvas_clear().
* If you know the number of the pushed objects in the advance, please call tvg_canvas_reserve().
* If you know the number of the pushed objects in advance, please call tvg_canvas_reserve().
*
* \return Tvg_Result return values:
* \retval TVG_RESULT_SUCCESS Succeed.
@ -1077,7 +1077,7 @@ TVG_EXPORT Tvg_Result tvg_shape_append_path(Tvg_Paint* paint, const Tvg_Path_Com
*
* tvg_shape_append_circle(shape, 10, 10, 50, 50);
* tvg_shape_get_path_coords(shape, (const Tvg_Point**)&coords, &len);
* //TVG approximates a circle by four Bezier lines. In the example above the cmds array stores their coordinates
* //TVG approximates a circle by four Bezier curves. In the example above the coords array stores their coordinates.
* \endcode
*
* \param[in] paint A Tvg_Paint pointer to the shape object.
@ -1103,7 +1103,7 @@ TVG_EXPORT Tvg_Result tvg_shape_get_path_coords(const Tvg_Paint* paint, const Tv
*
* tvg_shape_append_circle(shape, 10, 10, 50, 50);
* tvg_shape_get_path_commands(shape, (const Tvg_Path_Command**)&cmds, &len);
* //TVG approximates a circle by four Bezier lines. In the example above the cmds array stores their coordinates
* //TVG approximates a circle by four Bezier curves. In the example above the cmds array stores the commands of the path data.
* \endcode
*
* \param[in] paint A Tvg_Paint pointer to the shape object.
@ -1156,7 +1156,7 @@ TVG_EXPORT Tvg_Result tvg_shape_get_stroke_width(const Tvg_Paint* paint, float*
* \return Tvg_Result enumeration.
* \retval TVG_RESULT_SUCCESS Succeed.
* \retval TVG_RESULT_INVALID_ARGUMENT An invalid Tvg_Paint pointer.
* \retval TVG_RESULT_INSUFFICIENT_CONDITION An internal error with a memory allocation.
* \retval TVG_RESULT_FAILED_ALLOCATION An internal error with a memory allocation.
*
* \note Either a solid color or a gradient fill is applied, depending on what was set as last.
*/
@ -1234,7 +1234,7 @@ TVG_EXPORT Tvg_Result tvg_shape_get_stroke_gradient(const Tvg_Paint* paint, Tvg_
*
* \code
* //dash pattern examples
* float dashPattern[2] = {20, 10}; // -- - -- - -- -
* float dashPattern[2] = {20, 10}; // -- -- --
* float dashPattern[2] = {40, 20}; // ---- ---- ----
* float dashPattern[4] = {10, 20, 30, 40} // - --- - ---
* \endcode
@ -1245,8 +1245,10 @@ TVG_EXPORT Tvg_Result tvg_shape_get_stroke_gradient(const Tvg_Paint* paint, Tvg_
*
* \return Tvg_Result enumeration.
* \retval TVG_RESULT_SUCCESS Succeed.
* \retval TVG_RESULT_INVALID_ARGUMENT An invalid pointer passed as an argument, the given length of the array is less than two or any of the @p dashPattern values is zero or less.
* \retval TVG_RESULT_INVALID_ARGUMENT An invalid pointer passed as an argument and @p cnt > 0, the given length of the array is less than two or any of the @p dashPattern values is zero or less.
* \retval TVG_RESULT_FAILED_ALLOCATION An internal error with a memory allocation.
*
* \note To reset the stroke dash pattern, pass @c nullptr to @p dashPattern and zero to @p cnt.
*/
TVG_EXPORT Tvg_Result tvg_shape_set_stroke_dash(Tvg_Paint* paint, const float* dashPattern, uint32_t cnt);
@ -1396,10 +1398,10 @@ TVG_EXPORT Tvg_Result tvg_shape_get_fill_rule(const Tvg_Paint* paint, Tvg_Fill_R
* tvg_linear_gradient_set(grad, 700, 700, 800, 800);
* Tvg_Color_Stop color_stops[4] =
* {
* {.offset=0.0, .r=0, .g=0, .b=0, .a=255},
* {.offset=0.25, .r=255, .g=0, .b=0, .a=255},
* {.offset=0.5, .r=0, .g=255, .b=0, .a=255},
* {.offset=1.0, .r=0, .g=0, .b=255, .a=255}
* {0.0 , 0, 0, 0, 255},
* {0.25, 255, 0, 0, 255},
* {0.5 , 0, 255, 0, 255},
* {1.0 , 0, 0, 255, 255}
* };
* tvg_gradient_set_color_stops(grad, color_stops, 4);
* tvg_shape_set_linear_gradient(shape, grad);
@ -1426,13 +1428,13 @@ TVG_EXPORT Tvg_Result tvg_shape_set_linear_gradient(Tvg_Paint* paint, Tvg_Gradie
*
* \code
* Tvg_Gradient* grad = tvg_radial_gradient_new();
* tvg_radial_gradient_set(grad, 550, 550, 50));
* tvg_radial_gradient_set(grad, 550, 550, 50);
* Tvg_Color_Stop color_stops[4] =
* {
* {.offset=0.0, .r=0, .g=0, .b=0, .a=255},
* {.offset=0.25, .r=255, .g=0, .b=0, .a=255},
* {.offset=0.5, .r=0, .g=255, .b=0, .a=255},
* {.offset=1.0, .r=0, .g=0, .b=255, .a=255}
* {0.0 , 0, 0, 0, 255},
* {0.25, 255, 0, 0, 255},
* {0.5 , 0, 255, 0, 255},
* {1.0 , 0, 0, 255, 255}
* };
* tvg_gradient_set_color_stops(grad, color_stops, 4);
* tvg_shape_set_radial_gradient(shape, grad);
@ -1488,14 +1490,14 @@ TVG_EXPORT Tvg_Result tvg_shape_get_gradient(const Tvg_Paint* paint, Tvg_Gradien
* \brief Creates a new linear gradient object.
*
* \code
* Tvg_Paint shape = tvg_shape_new();
* Tvg_Paint* shape = tvg_shape_new();
* tvg_shape_append_rect(shape, 700, 700, 100, 100, 20, 20);
* Tvg_Gradient* grad = tvg_linear_gradient_new();
* tvg_linear_gradient_set(grad, 700, 700, 800, 800);
* Tvg_Color_Stop color_stops[2] =
* {
* {.offset=0, .r=0, .g=0, .b=0, .a=255},
* {.offset=1, .r=0, .g=255, .b=0, .a=255},
* {0.0, 0, 0, 0, 255},
* {1.0, 0, 255, 0, 255},
* };
* tvg_gradient_set_color_stops(grad, color_stops, 2);
* tvg_shape_set_linear_gradient(shape, grad);
@ -1510,14 +1512,14 @@ TVG_EXPORT Tvg_Gradient* tvg_linear_gradient_new();
* \brief Creates a new radial gradient object.
*
* \code
* Tvg_Paint shape = tvg_shape_new();
* Tvg_Paint* shape = tvg_shape_new();
* tvg_shape_append_rect(shape, 700, 700, 100, 100, 20, 20);
* Tvg_Gradient* grad = tvg_radial_gradient_new();
* tvg_linear_gradient_set(grad, 550, 550, 50);
* tvg_radial_gradient_set(grad, 550, 550, 50);
* Tvg_Color_Stop color_stops[2] =
* {
* {.offset=0, .r=0, .g=0, .b=0, .a=255},
* {.offset=1, .r=0, .g=255, .b=0, .a=255},
* {0.0, 0, 0, 0, 255},
* {1.0, 0, 255, 0, 255},
* };
* tvg_gradient_set_color_stops(grad, color_stops, 2);
* tvg_shape_set_radial_gradient(shape, grad);
@ -1543,7 +1545,9 @@ TVG_EXPORT Tvg_Gradient* tvg_radial_gradient_new();
*
* \return Tvg_Result enumeration.
* \retval TVG_RESULT_SUCCESS Succeed.
* \retval TVG_RESULT_INVALID_ARGUMENT An invalid Tvg_Gradient pointer or the first and the second points are equal.
* \retval TVG_RESULT_INVALID_ARGUMENT An invalid Tvg_Gradient pointer.
*
* \note In case the first and the second points are equal, an object filled with such a gradient fill is not rendered.
*/
TVG_EXPORT Tvg_Result tvg_linear_gradient_set(Tvg_Gradient* grad, float x1, float y1, float x2, float y2);
@ -1674,7 +1678,7 @@ TVG_EXPORT Tvg_Result tvg_gradient_del(Tvg_Gradient* grad);
/**
* \defgroup ThorVGCapi_Picture Picture
*
* \brief A module enabling to create and to load an image in one of the supported formats: svg, png and raw.
* \brief A module enabling to create and to load an image in one of the supported formats: svg, png, jpg and raw.
*
*
* \{
@ -1710,8 +1714,8 @@ TVG_EXPORT Tvg_Result tvg_picture_load(Tvg_Paint* paint, const char* path);
* \brief Loads a picture data from a memory block of a given size. (BETA_API)
*
* \return Tvg_Result return value
* \retval TVG_RESULT_SUCCESS: if ok.
* \retval TVG_RESULT_INVALID_PARAMETERS: if paint is invalid
* \retval TVG_RESULT_SUCCESS Succeed.
* \retval TVG_RESULT_INVALID_PARAMETERS: An invalid Tvg_Paint.
*
* \warning Please do not use it, this API is not official one. It can be modified in the next version.
*/
@ -1813,6 +1817,7 @@ TVG_EXPORT Tvg_Paint* tvg_scene_new();
*
* \return Tvg_Result enumeration.
* \retval TVG_RESULT_SUCCESS Succeed.
* \retval TVG_RESULT_FAILED_ALLOCATION An internal error with a memory allocation.
* \retval TVG_RESULT_INVALID_ARGUMENT An invalid Tvg_Paint pointer.
*/
TVG_EXPORT Tvg_Result tvg_scene_reserve(Tvg_Paint* scene, uint32_t size);
@ -1821,17 +1826,17 @@ TVG_EXPORT Tvg_Result tvg_scene_reserve(Tvg_Paint* scene, uint32_t size);
/*!
* \brief Passes drawing elements to the scene using Tvg_Paint objects.
*
* Only the paints pushed into the scene will be drawing targets.
* If you know the number of pushed objects in the advance, please call tvg_scene_reserve().
* Only the paints pushed into the scene will be the drawn targets.
* The paints are retained by the scene until the tvg_scene_clear() is called.
* If you know the number of pushed objects in advance, please call tvg_scene_reserve().
*
* \param[in] scene A Tvg_Paint pointer to the scene object.
* \param[in] paint A graphical object to be drawn.
*
* \return Tvg_Result enumeration.
* \retval TVG_RESULT_SUCCESS Succeed.
* \retval TVG_RESULT_INVALID_ARGUMENT An invalid pointer to the @p scene.
* \retval TVG_RESULT_MEMORY_CORRUPTION An invalid pointer to the @p paint.
* \retval TVG_RESULT_INSUFFICIENT_CONDITION An internal error.
* \retval TVG_RESULT_INVALID_ARGUMENT A @c nullptr passed as the argument.
* \retval TVG_RESULT_MEMORY_CORRUPTION An internal error.
*
* \note The rendering order of the paints is the same as the order as they were pushed. Consider sorting the paints before pushing them if you intend to use layering.
* \see tvg_scene_reserve()