/* * Copyright © 2022 Matthias Clasen * * This is part of HarfBuzz, a text shaping library. * * Permission is hereby granted, without written agreement and without * license or royalty fees, to use, copy, modify, and distribute this * software and its documentation for any purpose, provided that the * above copyright notice and the following two paragraphs appear in * all copies of this software. * * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH * DAMAGE. * * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. */ #if !defined(HB_H_IN) && !defined(HB_NO_SINGLE_HEADER_ERROR) #error "Include <hb.h> instead." #endif #ifndef HB_PAINT_H #define HB_PAINT_H #include "hb-common.h" HB_BEGIN_DECLS /** * hb_paint_funcs_t: * * Glyph paint callbacks. * * The callbacks assume that the caller maintains a stack * of current transforms, clips and intermediate surfaces, * as evidenced by the pairs of push/pop callbacks. The * push/pop calls will be properly nested, so it is fine * to store the different kinds of object on a single stack. * * Not all callbacks are required for all kinds of glyphs. * For rendering COLRv0 or non-color outline glyphs, the * gradient callbacks are not needed, and the composite * callback only needs to handle simple alpha compositing * (#HB_PAINT_COMPOSITE_MODE_SRC_OVER). * * The paint-image callback is only needed for glyphs * with image blobs in the CBDT, sbix or SVG tables. * * The custom-palette-color callback is only necessary if * you want to override colors from the font palette with * custom colors. * * Since: 7.0.0 **/ hb_paint_funcs_t; HB_EXTERN hb_paint_funcs_t * hb_paint_funcs_create (void); HB_EXTERN hb_paint_funcs_t * hb_paint_funcs_get_empty (void); HB_EXTERN hb_paint_funcs_t * hb_paint_funcs_reference (hb_paint_funcs_t *funcs); HB_EXTERN void hb_paint_funcs_destroy (hb_paint_funcs_t *funcs); HB_EXTERN hb_bool_t hb_paint_funcs_set_user_data (hb_paint_funcs_t *funcs, hb_user_data_key_t *key, void * data, hb_destroy_func_t destroy, hb_bool_t replace); HB_EXTERN void * hb_paint_funcs_get_user_data (const hb_paint_funcs_t *funcs, hb_user_data_key_t *key); HB_EXTERN void hb_paint_funcs_make_immutable (hb_paint_funcs_t *funcs); HB_EXTERN hb_bool_t hb_paint_funcs_is_immutable (hb_paint_funcs_t *funcs); /** * hb_paint_push_transform_func_t: * @funcs: paint functions object * @paint_data: The data accompanying the paint functions in hb_font_paint_glyph() * @xx: xx component of the transform matrix * @yx: yx component of the transform matrix * @xy: xy component of the transform matrix * @yy: yy component of the transform matrix * @dx: dx component of the transform matrix * @dy: dy component of the transform matrix * @user_data: User data pointer passed to hb_paint_funcs_set_push_transform_func() * * A virtual method for the #hb_paint_funcs_t to apply * a transform to subsequent paint calls. * * This transform is applied after the current transform, * and remains in effect until a matching call to * the #hb_paint_funcs_pop_transform_func_t vfunc. * * Since: 7.0.0 */ hb_paint_push_transform_func_t; /** * hb_paint_pop_transform_func_t: * @funcs: paint functions object * @paint_data: The data accompanying the paint functions in hb_font_paint_glyph() * @user_data: User data pointer passed to hb_paint_funcs_set_pop_transform_func() * * A virtual method for the #hb_paint_funcs_t to undo * the effect of a prior call to the #hb_paint_funcs_push_transform_func_t * vfunc. * * Since: 7.0.0 */ hb_paint_pop_transform_func_t; /** * hb_paint_color_glyph_func_t: * @funcs: paint functions object * @paint_data: The data accompanying the paint functions in hb_font_paint_glyph() * @glyph: the glyph ID * @font: the font * @user_data: User data pointer passed to hb_paint_funcs_set_color_glyph_func() * * A virtual method for the #hb_paint_funcs_t to render a color glyph by glyph index. * * Return value: %true if the glyph was painted, %false otherwise. * * Since: 8.2.0 */ hb_paint_color_glyph_func_t; /** * hb_paint_push_clip_glyph_func_t: * @funcs: paint functions object * @paint_data: The data accompanying the paint functions in hb_font_paint_glyph() * @glyph: the glyph ID * @font: the font * @user_data: User data pointer passed to hb_paint_funcs_set_push_clip_glyph_func() * * A virtual method for the #hb_paint_funcs_t to clip * subsequent paint calls to the outline of a glyph. * * The coordinates of the glyph outline are interpreted according * to the current transform. * * This clip is applied in addition to the current clip, * and remains in effect until a matching call to * the #hb_paint_funcs_pop_clip_func_t vfunc. * * Since: 7.0.0 */ hb_paint_push_clip_glyph_func_t; /** * hb_paint_push_clip_rectangle_func_t: * @funcs: paint functions object * @paint_data: The data accompanying the paint functions in hb_font_paint_glyph() * @xmin: min X for the rectangle * @ymin: min Y for the rectangle * @xmax: max X for the rectangle * @ymax: max Y for the rectangle * @user_data: User data pointer passed to hb_paint_funcs_set_push_clip_rectangle_func() * * A virtual method for the #hb_paint_funcs_t to clip * subsequent paint calls to a rectangle. * * The coordinates of the rectangle are interpreted according * to the current transform. * * This clip is applied in addition to the current clip, * and remains in effect until a matching call to * the #hb_paint_funcs_pop_clip_func_t vfunc. * * Since: 7.0.0 */ hb_paint_push_clip_rectangle_func_t; /** * hb_paint_pop_clip_func_t: * @funcs: paint functions object * @paint_data: The data accompanying the paint functions in hb_font_paint_glyph() * @user_data: User data pointer passed to hb_paint_funcs_set_pop_clip_func() * * A virtual method for the #hb_paint_funcs_t to undo * the effect of a prior call to the #hb_paint_funcs_push_clip_glyph_func_t * or #hb_paint_funcs_push_clip_rectangle_func_t vfuncs. * * Since: 7.0.0 */ hb_paint_pop_clip_func_t; /** * hb_paint_color_func_t: * @funcs: paint functions object * @paint_data: The data accompanying the paint functions in hb_font_paint_glyph() * @is_foreground: whether the color is the foreground * @color: The color to use, unpremultiplied * @user_data: User data pointer passed to hb_paint_funcs_set_color_func() * * A virtual method for the #hb_paint_funcs_t to paint a * color everywhere within the current clip. * * Since: 7.0.0 */ hb_paint_color_func_t; /** * HB_PAINT_IMAGE_FORMAT_PNG: * * Tag identifying PNG images in #hb_paint_image_func_t callbacks. * * Since: 7.0.0 */ #define HB_PAINT_IMAGE_FORMAT_PNG … /** * HB_PAINT_IMAGE_FORMAT_SVG: * * Tag identifying SVG images in #hb_paint_image_func_t callbacks. * * Since: 7.0.0 */ #define HB_PAINT_IMAGE_FORMAT_SVG … /** * HB_PAINT_IMAGE_FORMAT_BGRA: * * Tag identifying raw pixel-data images in #hb_paint_image_func_t callbacks. * The data is in BGRA pre-multiplied sRGBA color-space format. * * Since: 7.0.0 */ #define HB_PAINT_IMAGE_FORMAT_BGRA … /** * hb_paint_image_func_t: * @funcs: paint functions object * @paint_data: The data accompanying the paint functions in hb_font_paint_glyph() * @image: the image data * @width: width of the raster image in pixels, or 0 * @height: height of the raster image in pixels, or 0 * @format: the image format as a tag * @slant: the synthetic slant ratio to be applied to the image during rendering * @extents: (nullable): glyph extents for desired rendering * @user_data: User data pointer passed to hb_paint_funcs_set_image_func() * * A virtual method for the #hb_paint_funcs_t to paint a glyph image. * * This method is called for glyphs with image blobs in the CBDT, * sbix or SVG tables. The @format identifies the kind of data that * is contained in @image. Possible values include #HB_PAINT_IMAGE_FORMAT_PNG, * #HB_PAINT_IMAGE_FORMAT_SVG and #HB_PAINT_IMAGE_FORMAT_BGRA. * * The image dimensions and glyph extents are provided if available, * and should be used to size and position the image. * * Return value: Whether the operation was successful. * * Since: 7.0.0 */ hb_paint_image_func_t; /** * hb_color_stop_t: * @offset: the offset of the color stop * @is_foreground: whether the color is the foreground * @color: the color, unpremultiplied * * Information about a color stop on a color line. * * Color lines typically have offsets ranging between 0 and 1, * but that is not required. * * Note: despite @color being unpremultiplied here, interpolation in * gradients shall happen in premultiplied space. See the OpenType spec * [COLR](https://learn.microsoft.com/en-us/typography/opentype/spec/colr) * section for details. * * Since: 7.0.0 */ hb_color_stop_t; /** * hb_paint_extend_t: * @HB_PAINT_EXTEND_PAD: Outside the defined interval, * the color of the closest color stop is used. * @HB_PAINT_EXTEND_REPEAT: The color line is repeated over * repeated multiples of the defined interval * @HB_PAINT_EXTEND_REFLECT: The color line is repeated over * repeated intervals, as for the repeat mode. * However, in each repeated interval, the ordering of * color stops is the reverse of the adjacent interval. * * The values of this enumeration determine how color values * outside the minimum and maximum defined offset on a #hb_color_line_t * are determined. * * See the OpenType spec [COLR](https://learn.microsoft.com/en-us/typography/opentype/spec/colr) * section for details. * * Since: 7.0.0 */ hb_paint_extend_t; hb_color_line_t; /** * hb_color_line_get_color_stops_func_t: * @color_line: a #hb_color_line_t object * @color_line_data: the data accompanying @color_line * @start: the index of the first color stop to return * @count: (inout) (optional): Input = the maximum number of feature tags to return; * Output = the actual number of feature tags returned (may be zero) * @color_stops: (out) (array length=count) (optional): Array of #hb_color_stop_t to populate * @user_data: the data accompanying this method * * A virtual method for the #hb_color_line_t to fetch color stops. * * Return value: the total number of color stops in @color_line * * Since: 7.0.0 */ hb_color_line_get_color_stops_func_t; /** * hb_color_line_get_extend_func_t: * @color_line: a #hb_color_line_t object * @color_line_data: the data accompanying @color_line * @user_data: the data accompanying this method * * A virtual method for the @hb_color_line_t to fetches the extend mode. * * Return value: the extend mode of @color_line * * Since: 7.0.0 */ hb_color_line_get_extend_func_t; /** * hb_color_line_t: * * A struct containing color information for a gradient. * * Since: 7.0.0 */ struct hb_color_line_t { … }; HB_EXTERN unsigned int hb_color_line_get_color_stops (hb_color_line_t *color_line, unsigned int start, unsigned int *count, hb_color_stop_t *color_stops); HB_EXTERN hb_paint_extend_t hb_color_line_get_extend (hb_color_line_t *color_line); /** * hb_paint_linear_gradient_func_t: * @funcs: paint functions object * @paint_data: The data accompanying the paint functions in hb_font_paint_glyph() * @color_line: Color information for the gradient * @x0: X coordinate of the first point * @y0: Y coordinate of the first point * @x1: X coordinate of the second point * @y1: Y coordinate of the second point * @x2: X coordinate of the third point * @y2: Y coordinate of the third point * @user_data: User data pointer passed to hb_paint_funcs_set_linear_gradient_func() * * A virtual method for the #hb_paint_funcs_t to paint a linear * gradient everywhere within the current clip. * * The @color_line object contains information about the colors of the gradients. * It is only valid for the duration of the callback, you cannot keep it around. * * The coordinates of the points are interpreted according * to the current transform. * * See the OpenType spec [COLR](https://learn.microsoft.com/en-us/typography/opentype/spec/colr) * section for details on how the points define the direction * of the gradient, and how to interpret the @color_line. * * Since: 7.0.0 */ hb_paint_linear_gradient_func_t; /** * hb_paint_radial_gradient_func_t: * @funcs: paint functions object * @paint_data: The data accompanying the paint functions in hb_font_paint_glyph() * @color_line: Color information for the gradient * @x0: X coordinate of the first circle's center * @y0: Y coordinate of the first circle's center * @r0: radius of the first circle * @x1: X coordinate of the second circle's center * @y1: Y coordinate of the second circle's center * @r1: radius of the second circle * @user_data: User data pointer passed to hb_paint_funcs_set_radial_gradient_func() * * A virtual method for the #hb_paint_funcs_t to paint a radial * gradient everywhere within the current clip. * * The @color_line object contains information about the colors of the gradients. * It is only valid for the duration of the callback, you cannot keep it around. * * The coordinates of the points are interpreted according * to the current transform. * * See the OpenType spec [COLR](https://learn.microsoft.com/en-us/typography/opentype/spec/colr) * section for details on how the points define the direction * of the gradient, and how to interpret the @color_line. * * Since: 7.0.0 */ hb_paint_radial_gradient_func_t; /** * hb_paint_sweep_gradient_func_t: * @funcs: paint functions object * @paint_data: The data accompanying the paint functions in hb_font_paint_glyph() * @color_line: Color information for the gradient * @x0: X coordinate of the circle's center * @y0: Y coordinate of the circle's center * @start_angle: the start angle, in radians * @end_angle: the end angle, in radians * @user_data: User data pointer passed to hb_paint_funcs_set_sweep_gradient_func() * * A virtual method for the #hb_paint_funcs_t to paint a sweep * gradient everywhere within the current clip. * * The @color_line object contains information about the colors of the gradients. * It is only valid for the duration of the callback, you cannot keep it around. * * The coordinates of the points are interpreted according * to the current transform. * * See the OpenType spec [COLR](https://learn.microsoft.com/en-us/typography/opentype/spec/colr) * section for details on how the points define the direction * of the gradient, and how to interpret the @color_line. * * Since: 7.0.0 */ hb_paint_sweep_gradient_func_t; /** * hb_paint_composite_mode_t: * @HB_PAINT_COMPOSITE_MODE_CLEAR: clear destination layer (bounded) * @HB_PAINT_COMPOSITE_MODE_SRC: replace destination layer (bounded) * @HB_PAINT_COMPOSITE_MODE_SRC_OVER: draw source layer on top of destination layer * (bounded) * @HB_PAINT_COMPOSITE_MODE_SRC_IN: draw source where there was destination content * (unbounded) * @HB_PAINT_COMPOSITE_MODE_SRC_OUT: draw source where there was no destination * content (unbounded) * @HB_PAINT_COMPOSITE_MODE_SRC_ATOP: draw source on top of destination content and * only there * @HB_PAINT_COMPOSITE_MODE_DEST: ignore the source * @HB_PAINT_COMPOSITE_MODE_DEST_OVER: draw destination on top of source * @HB_PAINT_COMPOSITE_MODE_DEST_IN: leave destination only where there was * source content (unbounded) * @HB_PAINT_COMPOSITE_MODE_DEST_OUT: leave destination only where there was no * source content * @HB_PAINT_COMPOSITE_MODE_DEST_ATOP: leave destination on top of source content * and only there (unbounded) * @HB_PAINT_COMPOSITE_MODE_XOR: source and destination are shown where there is only * one of them * @HB_PAINT_COMPOSITE_MODE_PLUS: source and destination layers are accumulated * @HB_PAINT_COMPOSITE_MODE_MULTIPLY: source and destination layers are multiplied. * This causes the result to be at least as dark as the darker inputs. * @HB_PAINT_COMPOSITE_MODE_SCREEN: source and destination are complemented and * multiplied. This causes the result to be at least as light as the lighter * inputs. * @HB_PAINT_COMPOSITE_MODE_OVERLAY: multiplies or screens, depending on the * lightness of the destination color. * @HB_PAINT_COMPOSITE_MODE_DARKEN: replaces the destination with the source if it * is darker, otherwise keeps the source. * @HB_PAINT_COMPOSITE_MODE_LIGHTEN: replaces the destination with the source if it * is lighter, otherwise keeps the source. * @HB_PAINT_COMPOSITE_MODE_COLOR_DODGE: brightens the destination color to reflect * the source color. * @HB_PAINT_COMPOSITE_MODE_COLOR_BURN: darkens the destination color to reflect * the source color. * @HB_PAINT_COMPOSITE_MODE_HARD_LIGHT: Multiplies or screens, dependent on source * color. * @HB_PAINT_COMPOSITE_MODE_SOFT_LIGHT: Darkens or lightens, dependent on source * color. * @HB_PAINT_COMPOSITE_MODE_DIFFERENCE: Takes the difference of the source and * destination color. * @HB_PAINT_COMPOSITE_MODE_EXCLUSION: Produces an effect similar to difference, but * with lower contrast. * @HB_PAINT_COMPOSITE_MODE_HSL_HUE: Creates a color with the hue of the source * and the saturation and luminosity of the target. * @HB_PAINT_COMPOSITE_MODE_HSL_SATURATION: Creates a color with the saturation * of the source and the hue and luminosity of the target. Painting with * this mode onto a gray area produces no change. * @HB_PAINT_COMPOSITE_MODE_HSL_COLOR: Creates a color with the hue and saturation * of the source and the luminosity of the target. This preserves the gray * levels of the target and is useful for coloring monochrome images or * tinting color images. * @HB_PAINT_COMPOSITE_MODE_HSL_LUMINOSITY: Creates a color with the luminosity of * the source and the hue and saturation of the target. This produces an * inverse effect to @HB_PAINT_COMPOSITE_MODE_HSL_COLOR. * * The values of this enumeration describe the compositing modes * that can be used when combining temporary redirected drawing * with the backdrop. * * See the OpenType spec [COLR](https://learn.microsoft.com/en-us/typography/opentype/spec/colr) * section for details. * * Since: 7.0.0 */ hb_paint_composite_mode_t; /** * hb_paint_push_group_func_t: * @funcs: paint functions object * @paint_data: The data accompanying the paint functions in hb_font_paint_glyph() * @user_data: User data pointer passed to hb_paint_funcs_set_push_group_func() * * A virtual method for the #hb_paint_funcs_t to use * an intermediate surface for subsequent paint calls. * * The drawing will be redirected to an intermediate surface * until a matching call to the #hb_paint_funcs_pop_group_func_t * vfunc. * * Since: 7.0.0 */ hb_paint_push_group_func_t; /** * hb_paint_pop_group_func_t: * @funcs: paint functions object * @paint_data: The data accompanying the paint functions in hb_font_paint_glyph() * @mode: the compositing mode to use * @user_data: User data pointer passed to hb_paint_funcs_set_pop_group_func() * * A virtual method for the #hb_paint_funcs_t to undo * the effect of a prior call to the #hb_paint_funcs_push_group_func_t * vfunc. * * This call stops the redirection to the intermediate surface, * and then composites it on the previous surface, using the * compositing mode passed to this call. * * Since: 7.0.0 */ hb_paint_pop_group_func_t; /** * hb_paint_custom_palette_color_func_t: * @funcs: paint functions object * @paint_data: The data accompanying the paint functions in hb_font_paint_glyph() * @color_index: the color index * @color: (out): fetched color * @user_data: User data pointer passed to hb_paint_funcs_set_pop_group_func() * * A virtual method for the #hb_paint_funcs_t to fetch a color from the custom * color palette. * * Custom palette colors override the colors from the fonts selected color * palette. It is not necessary to override all palette entries; for entries * that should be taken from the font palette, return `false`. * * This function might get called multiple times, but the custom palette is * expected to remain unchanged for duration of a hb_font_paint_glyph() call. * * Return value: `true` if found, `false` otherwise * * Since: 7.0.0 */ hb_paint_custom_palette_color_func_t; /** * hb_paint_funcs_set_push_transform_func: * @funcs: A paint functions struct * @func: (closure user_data) (destroy destroy) (scope notified): The push-transform callback * @user_data: Data to pass to @func * @destroy: (nullable): Function to call when @user_data is no longer needed * * Sets the push-transform callback on the paint functions struct. * * Since: 7.0.0 */ HB_EXTERN void hb_paint_funcs_set_push_transform_func (hb_paint_funcs_t *funcs, hb_paint_push_transform_func_t func, void *user_data, hb_destroy_func_t destroy); /** * hb_paint_funcs_set_pop_transform_func: * @funcs: A paint functions struct * @func: (closure user_data) (destroy destroy) (scope notified): The pop-transform callback * @user_data: Data to pass to @func * @destroy: (nullable): Function to call when @user_data is no longer needed * * Sets the pop-transform callback on the paint functions struct. * * Since: 7.0.0 */ HB_EXTERN void hb_paint_funcs_set_pop_transform_func (hb_paint_funcs_t *funcs, hb_paint_pop_transform_func_t func, void *user_data, hb_destroy_func_t destroy); /** * hb_paint_funcs_set_color_glyph_func: * @funcs: A paint functions struct * @func: (closure user_data) (destroy destroy) (scope notified): The color-glyph callback * @user_data: Data to pass to @func * @destroy: (nullable): Function to call when @user_data is no longer needed * * Sets the color-glyph callback on the paint functions struct. * * Since: 8.2.0 */ HB_EXTERN void hb_paint_funcs_set_color_glyph_func (hb_paint_funcs_t *funcs, hb_paint_color_glyph_func_t func, void *user_data, hb_destroy_func_t destroy); /** * hb_paint_funcs_set_push_clip_glyph_func: * @funcs: A paint functions struct * @func: (closure user_data) (destroy destroy) (scope notified): The push-clip-glyph callback * @user_data: Data to pass to @func * @destroy: (nullable): Function to call when @user_data is no longer needed * * Sets the push-clip-glyph callback on the paint functions struct. * * Since: 7.0.0 */ HB_EXTERN void hb_paint_funcs_set_push_clip_glyph_func (hb_paint_funcs_t *funcs, hb_paint_push_clip_glyph_func_t func, void *user_data, hb_destroy_func_t destroy); /** * hb_paint_funcs_set_push_clip_rectangle_func: * @funcs: A paint functions struct * @func: (closure user_data) (destroy destroy) (scope notified): The push-clip-rectangle callback * @user_data: Data to pass to @func * @destroy: (nullable): Function to call when @user_data is no longer needed * * Sets the push-clip-rect callback on the paint functions struct. * * Since: 7.0.0 */ HB_EXTERN void hb_paint_funcs_set_push_clip_rectangle_func (hb_paint_funcs_t *funcs, hb_paint_push_clip_rectangle_func_t func, void *user_data, hb_destroy_func_t destroy); /** * hb_paint_funcs_set_pop_clip_func: * @funcs: A paint functions struct * @func: (closure user_data) (destroy destroy) (scope notified): The pop-clip callback * @user_data: Data to pass to @func * @destroy: (nullable): Function to call when @user_data is no longer needed * * Sets the pop-clip callback on the paint functions struct. * * Since: 7.0.0 */ HB_EXTERN void hb_paint_funcs_set_pop_clip_func (hb_paint_funcs_t *funcs, hb_paint_pop_clip_func_t func, void *user_data, hb_destroy_func_t destroy); /** * hb_paint_funcs_set_color_func: * @funcs: A paint functions struct * @func: (closure user_data) (destroy destroy) (scope notified): The paint-color callback * @user_data: Data to pass to @func * @destroy: (nullable): Function to call when @user_data is no longer needed * * Sets the paint-color callback on the paint functions struct. * * Since: 7.0.0 */ HB_EXTERN void hb_paint_funcs_set_color_func (hb_paint_funcs_t *funcs, hb_paint_color_func_t func, void *user_data, hb_destroy_func_t destroy); /** * hb_paint_funcs_set_image_func: * @funcs: A paint functions struct * @func: (closure user_data) (destroy destroy) (scope notified): The paint-image callback * @user_data: Data to pass to @func * @destroy: (nullable): Function to call when @user_data is no longer needed * * Sets the paint-image callback on the paint functions struct. * * Since: 7.0.0 */ HB_EXTERN void hb_paint_funcs_set_image_func (hb_paint_funcs_t *funcs, hb_paint_image_func_t func, void *user_data, hb_destroy_func_t destroy); /** * hb_paint_funcs_set_linear_gradient_func: * @funcs: A paint functions struct * @func: (closure user_data) (destroy destroy) (scope notified): The linear-gradient callback * @user_data: Data to pass to @func * @destroy: (nullable): Function to call when @user_data is no longer needed * * Sets the linear-gradient callback on the paint functions struct. * * Since: 7.0.0 */ HB_EXTERN void hb_paint_funcs_set_linear_gradient_func (hb_paint_funcs_t *funcs, hb_paint_linear_gradient_func_t func, void *user_data, hb_destroy_func_t destroy); /** * hb_paint_funcs_set_radial_gradient_func: * @funcs: A paint functions struct * @func: (closure user_data) (destroy destroy) (scope notified): The radial-gradient callback * @user_data: Data to pass to @func * @destroy: (nullable): Function to call when @user_data is no longer needed * * Sets the radial-gradient callback on the paint functions struct. * * Since: 7.0.0 */ HB_EXTERN void hb_paint_funcs_set_radial_gradient_func (hb_paint_funcs_t *funcs, hb_paint_radial_gradient_func_t func, void *user_data, hb_destroy_func_t destroy); /** * hb_paint_funcs_set_sweep_gradient_func: * @funcs: A paint functions struct * @func: (closure user_data) (destroy destroy) (scope notified): The sweep-gradient callback * @user_data: Data to pass to @func * @destroy: (nullable): Function to call when @user_data is no longer needed * * Sets the sweep-gradient callback on the paint functions struct. * * Since: 7.0.0 */ HB_EXTERN void hb_paint_funcs_set_sweep_gradient_func (hb_paint_funcs_t *funcs, hb_paint_sweep_gradient_func_t func, void *user_data, hb_destroy_func_t destroy); /** * hb_paint_funcs_set_push_group_func: * @funcs: A paint functions struct * @func: (closure user_data) (destroy destroy) (scope notified): The push-group callback * @user_data: Data to pass to @func * @destroy: (nullable): Function to call when @user_data is no longer needed * * Sets the push-group callback on the paint functions struct. * * Since: 7.0.0 */ HB_EXTERN void hb_paint_funcs_set_push_group_func (hb_paint_funcs_t *funcs, hb_paint_push_group_func_t func, void *user_data, hb_destroy_func_t destroy); /** * hb_paint_funcs_set_pop_group_func: * @funcs: A paint functions struct * @func: (closure user_data) (destroy destroy) (scope notified): The pop-group callback * @user_data: Data to pass to @func * @destroy: (nullable): Function to call when @user_data is no longer needed * * Sets the pop-group callback on the paint functions struct. * * Since: 7.0.0 */ HB_EXTERN void hb_paint_funcs_set_pop_group_func (hb_paint_funcs_t *funcs, hb_paint_pop_group_func_t func, void *user_data, hb_destroy_func_t destroy); /** * hb_paint_funcs_set_custom_palette_color_func: * @funcs: A paint functions struct * @func: (closure user_data) (destroy destroy) (scope notified): The custom-palette-color callback * @user_data: Data to pass to @func * @destroy: (nullable): Function to call when @user_data is no longer needed * * Sets the custom-palette-color callback on the paint functions struct. * * Since: 7.0.0 */ HB_EXTERN void hb_paint_funcs_set_custom_palette_color_func (hb_paint_funcs_t *funcs, hb_paint_custom_palette_color_func_t func, void *user_data, hb_destroy_func_t destroy); /* * Manual API */ HB_EXTERN void hb_paint_push_transform (hb_paint_funcs_t *funcs, void *paint_data, float xx, float yx, float xy, float yy, float dx, float dy); HB_EXTERN void hb_paint_pop_transform (hb_paint_funcs_t *funcs, void *paint_data); HB_EXTERN hb_bool_t hb_paint_color_glyph (hb_paint_funcs_t *funcs, void *paint_data, hb_codepoint_t glyph, hb_font_t *font); HB_EXTERN void hb_paint_push_clip_glyph (hb_paint_funcs_t *funcs, void *paint_data, hb_codepoint_t glyph, hb_font_t *font); HB_EXTERN void hb_paint_push_clip_rectangle (hb_paint_funcs_t *funcs, void *paint_data, float xmin, float ymin, float xmax, float ymax); HB_EXTERN void hb_paint_pop_clip (hb_paint_funcs_t *funcs, void *paint_data); HB_EXTERN void hb_paint_color (hb_paint_funcs_t *funcs, void *paint_data, hb_bool_t is_foreground, hb_color_t color); HB_EXTERN void hb_paint_image (hb_paint_funcs_t *funcs, void *paint_data, hb_blob_t *image, unsigned int width, unsigned int height, hb_tag_t format, float slant, hb_glyph_extents_t *extents); HB_EXTERN void hb_paint_linear_gradient (hb_paint_funcs_t *funcs, void *paint_data, hb_color_line_t *color_line, float x0, float y0, float x1, float y1, float x2, float y2); HB_EXTERN void hb_paint_radial_gradient (hb_paint_funcs_t *funcs, void *paint_data, hb_color_line_t *color_line, float x0, float y0, float r0, float x1, float y1, float r1); HB_EXTERN void hb_paint_sweep_gradient (hb_paint_funcs_t *funcs, void *paint_data, hb_color_line_t *color_line, float x0, float y0, float start_angle, float end_angle); HB_EXTERN void hb_paint_push_group (hb_paint_funcs_t *funcs, void *paint_data); HB_EXTERN void hb_paint_pop_group (hb_paint_funcs_t *funcs, void *paint_data, hb_paint_composite_mode_t mode); HB_EXTERN hb_bool_t hb_paint_custom_palette_color (hb_paint_funcs_t *funcs, void *paint_data, unsigned int color_index, hb_color_t *color); HB_END_DECLS #endif /* HB_PAINT_H */
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