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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
commit26a029d407be480d791972afb5975cf62c9360a6 (patch)
treef435a8308119effd964b339f76abb83a57c29483 /gfx/harfbuzz/src/hb-paint.cc
parentInitial commit. (diff)
downloadfirefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz
firefox-26a029d407be480d791972afb5975cf62c9360a6.zip
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'gfx/harfbuzz/src/hb-paint.cc')
-rw-r--r--gfx/harfbuzz/src/hb-paint.cc728
1 files changed, 728 insertions, 0 deletions
diff --git a/gfx/harfbuzz/src/hb-paint.cc b/gfx/harfbuzz/src/hb-paint.cc
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+/*
+ * 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.
+ */
+
+#include "hb.hh"
+
+#ifndef HB_NO_PAINT
+
+#include "hb-paint.hh"
+
+/**
+ * SECTION: hb-paint
+ * @title: hb-paint
+ * @short_description: Glyph painting
+ * @include: hb.h
+ *
+ * Functions for painting glyphs.
+ *
+ * The main purpose of these functions is to paint (extract) color glyph layers
+ * from the COLRv1 table, but the API works for drawing ordinary outlines and
+ * images as well.
+ *
+ * The #hb_paint_funcs_t struct can be used with hb_font_paint_glyph().
+ **/
+
+static void
+hb_paint_push_transform_nil (hb_paint_funcs_t *funcs, void *paint_data,
+ float xx, float yx,
+ float xy, float yy,
+ float dx, float dy,
+ void *user_data) {}
+
+static void
+hb_paint_pop_transform_nil (hb_paint_funcs_t *funcs, void *paint_data,
+ void *user_data) {}
+
+static hb_bool_t
+hb_paint_color_glyph_nil (hb_paint_funcs_t *funcs, void *paint_data,
+ hb_codepoint_t glyph,
+ hb_font_t *font,
+ void *user_data) { return false; }
+
+static void
+hb_paint_push_clip_glyph_nil (hb_paint_funcs_t *funcs, void *paint_data,
+ hb_codepoint_t glyph,
+ hb_font_t *font,
+ void *user_data) {}
+
+static void
+hb_paint_push_clip_rectangle_nil (hb_paint_funcs_t *funcs, void *paint_data,
+ float xmin, float ymin, float xmax, float ymax,
+ void *user_data) {}
+
+static void
+hb_paint_pop_clip_nil (hb_paint_funcs_t *funcs, void *paint_data,
+ void *user_data) {}
+
+static void
+hb_paint_color_nil (hb_paint_funcs_t *funcs, void *paint_data,
+ hb_bool_t is_foreground,
+ hb_color_t color,
+ void *user_data) {}
+
+static hb_bool_t
+hb_paint_image_nil (hb_paint_funcs_t *funcs, void *paint_data,
+ hb_blob_t *image,
+ unsigned int width,
+ unsigned int height,
+ hb_tag_t format,
+ float slant_xy,
+ hb_glyph_extents_t *extents,
+ void *user_data) { return false; }
+
+static void
+hb_paint_linear_gradient_nil (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,
+ void *user_data) {}
+
+static void
+hb_paint_radial_gradient_nil (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,
+ void *user_data) {}
+
+static void
+hb_paint_sweep_gradient_nil (hb_paint_funcs_t *funcs, void *paint_data,
+ hb_color_line_t *color_line,
+ float x0, float y0,
+ float start_angle,
+ float end_angle,
+ void *user_data) {}
+
+static void
+hb_paint_push_group_nil (hb_paint_funcs_t *funcs, void *paint_data,
+ void *user_data) {}
+
+static void
+hb_paint_pop_group_nil (hb_paint_funcs_t *funcs, void *paint_data,
+ hb_paint_composite_mode_t mode,
+ void *user_data) {}
+
+static hb_bool_t
+hb_paint_custom_palette_color_nil (hb_paint_funcs_t *funcs, void *paint_data,
+ unsigned int color_index,
+ hb_color_t *color,
+ void *user_data) { return false; }
+
+static bool
+_hb_paint_funcs_set_preamble (hb_paint_funcs_t *funcs,
+ bool func_is_null,
+ void **user_data,
+ hb_destroy_func_t *destroy)
+{
+ if (hb_object_is_immutable (funcs))
+ {
+ if (*destroy)
+ (*destroy) (*user_data);
+ return false;
+ }
+
+ if (func_is_null)
+ {
+ if (*destroy)
+ (*destroy) (*user_data);
+ *destroy = nullptr;
+ *user_data = nullptr;
+ }
+
+ return true;
+}
+
+static bool
+_hb_paint_funcs_set_middle (hb_paint_funcs_t *funcs,
+ void *user_data,
+ hb_destroy_func_t destroy)
+{
+ if (user_data && !funcs->user_data)
+ {
+ funcs->user_data = (decltype (funcs->user_data)) hb_calloc (1, sizeof (*funcs->user_data));
+ if (unlikely (!funcs->user_data))
+ goto fail;
+ }
+ if (destroy && !funcs->destroy)
+ {
+ funcs->destroy = (decltype (funcs->destroy)) hb_calloc (1, sizeof (*funcs->destroy));
+ if (unlikely (!funcs->destroy))
+ goto fail;
+ }
+
+ return true;
+
+fail:
+ if (destroy)
+ (destroy) (user_data);
+ return false;
+}
+
+#define HB_PAINT_FUNC_IMPLEMENT(name) \
+ \
+void \
+hb_paint_funcs_set_##name##_func (hb_paint_funcs_t *funcs, \
+ hb_paint_##name##_func_t func, \
+ void *user_data, \
+ hb_destroy_func_t destroy) \
+{ \
+ if (!_hb_paint_funcs_set_preamble (funcs, !func, &user_data, &destroy)) \
+ return; \
+ \
+ if (funcs->destroy && funcs->destroy->name) \
+ funcs->destroy->name (!funcs->user_data ? nullptr : funcs->user_data->name);\
+ \
+ if (!_hb_paint_funcs_set_middle (funcs, user_data, destroy)) \
+ return; \
+ \
+ if (func) \
+ funcs->func.name = func; \
+ else \
+ funcs->func.name = hb_paint_##name##_nil; \
+ \
+ if (funcs->user_data) \
+ funcs->user_data->name = user_data; \
+ if (funcs->destroy) \
+ funcs->destroy->name = destroy; \
+}
+
+HB_PAINT_FUNCS_IMPLEMENT_CALLBACKS
+#undef HB_PAINT_FUNC_IMPLEMENT
+
+/**
+ * hb_paint_funcs_create:
+ *
+ * Creates a new #hb_paint_funcs_t structure of paint functions.
+ *
+ * The initial reference count of 1 should be released with hb_paint_funcs_destroy()
+ * when you are done using the #hb_paint_funcs_t. This function never returns
+ * `NULL`. If memory cannot be allocated, a special singleton #hb_paint_funcs_t
+ * object will be returned.
+ *
+ * Returns value: (transfer full): the paint-functions structure
+ *
+ * Since: 7.0.0
+ */
+hb_paint_funcs_t *
+hb_paint_funcs_create ()
+{
+ hb_paint_funcs_t *funcs;
+ if (unlikely (!(funcs = hb_object_create<hb_paint_funcs_t> ())))
+ return const_cast<hb_paint_funcs_t *> (&Null (hb_paint_funcs_t));
+
+ funcs->func = Null (hb_paint_funcs_t).func;
+
+ return funcs;
+}
+
+DEFINE_NULL_INSTANCE (hb_paint_funcs_t) =
+{
+ HB_OBJECT_HEADER_STATIC,
+
+ {
+#define HB_PAINT_FUNC_IMPLEMENT(name) hb_paint_##name##_nil,
+ HB_PAINT_FUNCS_IMPLEMENT_CALLBACKS
+#undef HB_PAINT_FUNC_IMPLEMENT
+ }
+};
+
+/**
+ * hb_paint_funcs_get_empty:
+ *
+ * Fetches the singleton empty paint-functions structure.
+ *
+ * Return value: (transfer full): The empty paint-functions structure
+ *
+ * Since: 7.0.0
+ **/
+hb_paint_funcs_t *
+hb_paint_funcs_get_empty ()
+{
+ return const_cast<hb_paint_funcs_t *> (&Null (hb_paint_funcs_t));
+}
+
+/**
+ * hb_paint_funcs_reference: (skip)
+ * @funcs: The paint-functions structure
+ *
+ * Increases the reference count on a paint-functions structure.
+ *
+ * This prevents @funcs from being destroyed until a matching
+ * call to hb_paint_funcs_destroy() is made.
+ *
+ * Return value: The paint-functions structure
+ *
+ * Since: 7.0.0
+ */
+hb_paint_funcs_t *
+hb_paint_funcs_reference (hb_paint_funcs_t *funcs)
+{
+ return hb_object_reference (funcs);
+}
+
+/**
+ * hb_paint_funcs_destroy: (skip)
+ * @funcs: The paint-functions structure
+ *
+ * Decreases the reference count on a paint-functions structure.
+ *
+ * When the reference count reaches zero, the structure
+ * is destroyed, freeing all memory.
+ *
+ * Since: 7.0.0
+ */
+void
+hb_paint_funcs_destroy (hb_paint_funcs_t *funcs)
+{
+ if (!hb_object_destroy (funcs)) return;
+
+ if (funcs->destroy)
+ {
+#define HB_PAINT_FUNC_IMPLEMENT(name) \
+ if (funcs->destroy->name) funcs->destroy->name (!funcs->user_data ? nullptr : funcs->user_data->name);
+ HB_PAINT_FUNCS_IMPLEMENT_CALLBACKS
+#undef HB_PAINT_FUNC_IMPLEMENT
+ }
+
+ hb_free (funcs->destroy);
+ hb_free (funcs->user_data);
+ hb_free (funcs);
+}
+
+/**
+ * hb_paint_funcs_set_user_data: (skip)
+ * @funcs: The paint-functions structure
+ * @key: The user-data key
+ * @data: A pointer to the user data
+ * @destroy: (nullable): A callback to call when @data is not needed anymore
+ * @replace: Whether to replace an existing data with the same key
+ *
+ * Attaches a user-data key/data pair to the specified paint-functions structure.
+ *
+ * Return value: `true` if success, `false` otherwise
+ *
+ * Since: 7.0.0
+ **/
+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)
+{
+ return hb_object_set_user_data (funcs, key, data, destroy, replace);
+}
+
+/**
+ * hb_paint_funcs_get_user_data: (skip)
+ * @funcs: The paint-functions structure
+ * @key: The user-data key to query
+ *
+ * Fetches the user-data associated with the specified key,
+ * attached to the specified paint-functions structure.
+ *
+ * Return value: (transfer none): A pointer to the user data
+ *
+ * Since: 7.0.0
+ **/
+void *
+hb_paint_funcs_get_user_data (const hb_paint_funcs_t *funcs,
+ hb_user_data_key_t *key)
+{
+ return hb_object_get_user_data (funcs, key);
+}
+
+/**
+ * hb_paint_funcs_make_immutable:
+ * @funcs: The paint-functions structure
+ *
+ * Makes a paint-functions structure immutable.
+ *
+ * After this call, all attempts to set one of the callbacks
+ * on @funcs will fail.
+ *
+ * Since: 7.0.0
+ */
+void
+hb_paint_funcs_make_immutable (hb_paint_funcs_t *funcs)
+{
+ if (hb_object_is_immutable (funcs))
+ return;
+
+ hb_object_make_immutable (funcs);
+}
+
+/**
+ * hb_paint_funcs_is_immutable:
+ * @funcs: The paint-functions structure
+ *
+ * Tests whether a paint-functions structure is immutable.
+ *
+ * Return value: `true` if @funcs is immutable, `false` otherwise
+ *
+ * Since: 7.0.0
+ */
+hb_bool_t
+hb_paint_funcs_is_immutable (hb_paint_funcs_t *funcs)
+{
+ return hb_object_is_immutable (funcs);
+}
+
+
+/**
+ * hb_color_line_get_color_stops:
+ * @color_line: a #hb_color_line_t object
+ * @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
+ *
+ * Fetches a list of color stops from the given color line object.
+ *
+ * Note that due to variations being applied, the returned color stops
+ * may be out of order. It is the callers responsibility to ensure that
+ * color stops are sorted by their offset before they are used.
+ *
+ * Return value: the total number of color stops in @color_line
+ *
+ * Since: 7.0.0
+ */
+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)
+{
+ return color_line->get_color_stops (color_line,
+ color_line->data,
+ start, count,
+ color_stops,
+ color_line->get_color_stops_user_data);
+}
+
+/**
+ * hb_color_line_get_extend:
+ * @color_line: a #hb_color_line_t object
+ *
+ * Fetches the extend mode of the color line object.
+ *
+ * Return value: the extend mode of @color_line
+ *
+ * Since: 7.0.0
+ */
+hb_paint_extend_t
+hb_color_line_get_extend (hb_color_line_t *color_line)
+{
+ return color_line->get_extend (color_line,
+ color_line->data,
+ color_line->get_extend_user_data);
+}
+
+
+/**
+ * hb_paint_push_transform:
+ * @funcs: paint functions
+ * @paint_data: associated data passed by the caller
+ * @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
+ *
+ * Perform a "push-transform" paint operation.
+ *
+ * Since: 7.0.0
+ */
+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)
+{
+ funcs->push_transform (paint_data, xx, yx, xy, yy, dx, dy);
+}
+
+/**
+ * hb_paint_pop_transform:
+ * @funcs: paint functions
+ * @paint_data: associated data passed by the caller
+ *
+ * Perform a "pop-transform" paint operation.
+ *
+ * Since: 7.0.0
+ */
+void
+hb_paint_pop_transform (hb_paint_funcs_t *funcs, void *paint_data)
+{
+ funcs->pop_transform (paint_data);
+}
+
+/**
+ * hb_paint_color_glyph:
+ * @funcs: paint functions
+ * @paint_data: associated data passed by the caller
+ * @glyph: the glyph ID
+ * @font: the font
+ *
+ * Perform a "color-glyph" paint operation.
+ *
+ * Since: 8.2.0
+ */
+hb_bool_t
+hb_paint_color_glyph (hb_paint_funcs_t *funcs, void *paint_data,
+ hb_codepoint_t glyph,
+ hb_font_t *font)
+{
+ return funcs->color_glyph (paint_data, glyph, font);
+}
+
+/**
+ * hb_paint_push_clip_glyph:
+ * @funcs: paint functions
+ * @paint_data: associated data passed by the caller
+ * @glyph: the glyph ID
+ * @font: the font
+ *
+ * Perform a "push-clip-glyph" paint operation.
+ *
+ * Since: 7.0.0
+ */
+void
+hb_paint_push_clip_glyph (hb_paint_funcs_t *funcs, void *paint_data,
+ hb_codepoint_t glyph,
+ hb_font_t *font)
+{
+ funcs->push_clip_glyph (paint_data, glyph, font);
+}
+
+/**
+ * hb_paint_push_clip_rectangle:
+ * @funcs: paint functions
+ * @paint_data: associated data passed by the caller
+ * @xmin: min X for the rectangle
+ * @ymin: min Y for the rectangle
+ * @xmax: max X for the rectangle
+ * @ymax: max Y for the rectangle
+ *
+ * Perform a "push-clip-rect" paint operation.
+ *
+ * Since: 7.0.0
+ */
+void
+hb_paint_push_clip_rectangle (hb_paint_funcs_t *funcs, void *paint_data,
+ float xmin, float ymin, float xmax, float ymax)
+{
+ funcs->push_clip_rectangle (paint_data, xmin, ymin, xmax, ymax);
+}
+
+/**
+ * hb_paint_pop_clip:
+ * @funcs: paint functions
+ * @paint_data: associated data passed by the caller
+ *
+ * Perform a "pop-clip" paint operation.
+ *
+ * Since: 7.0.0
+ */
+void
+hb_paint_pop_clip (hb_paint_funcs_t *funcs, void *paint_data)
+{
+ funcs->pop_clip (paint_data);
+}
+
+/**
+ * hb_paint_color:
+ * @funcs: paint functions
+ * @paint_data: associated data passed by the caller
+ * @is_foreground: whether the color is the foreground
+ * @color: The color to use
+ *
+ * Perform a "color" paint operation.
+ *
+ * Since: 7.0.0
+ */
+void
+hb_paint_color (hb_paint_funcs_t *funcs, void *paint_data,
+ hb_bool_t is_foreground,
+ hb_color_t color)
+{
+ funcs->color (paint_data, is_foreground, color);
+}
+
+/**
+ * hb_paint_image:
+ * @funcs: paint functions
+ * @paint_data: associated data passed by the caller
+ * @image: 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): the extents of the glyph
+ *
+ * Perform a "image" paint operation.
+ *
+ * Since: 7.0.0
+ */
+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)
+{
+ funcs->image (paint_data, image, width, height, format, slant, extents);
+}
+
+/**
+ * hb_paint_linear_gradient:
+ * @funcs: paint functions
+ * @paint_data: associated data passed by the caller
+ * @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
+ *
+ * Perform a "linear-gradient" paint operation.
+ *
+ * Since: 7.0.0
+ */
+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)
+{
+ funcs->linear_gradient (paint_data, color_line, x0, y0, x1, y1, x2, y2);
+}
+
+/**
+ * hb_paint_radial_gradient:
+ * @funcs: paint functions
+ * @paint_data: associated data passed by the caller
+ * @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
+ *
+ * Perform a "radial-gradient" paint operation.
+ *
+ * Since: 7.0.0
+ */
+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)
+{
+ funcs->radial_gradient (paint_data, color_line, x0, y0, r0, y1, x1, r1);
+}
+
+/**
+ * hb_paint_sweep_gradient:
+ * @funcs: paint functions
+ * @paint_data: associated data passed by the caller
+ * @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
+ * @end_angle: the end angle
+ *
+ * Perform a "sweep-gradient" paint operation.
+ *
+ * Since: 7.0.0
+ */
+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)
+{
+ funcs->sweep_gradient (paint_data, color_line, x0, y0, start_angle, end_angle);
+}
+
+/**
+ * hb_paint_push_group:
+ * @funcs: paint functions
+ * @paint_data: associated data passed by the caller
+ *
+ * Perform a "push-group" paint operation.
+ *
+ * Since: 7.0.0
+ */
+void
+hb_paint_push_group (hb_paint_funcs_t *funcs, void *paint_data)
+{
+ funcs->push_group (paint_data);
+}
+
+/**
+ * hb_paint_pop_group:
+ * @funcs: paint functions
+ * @paint_data: associated data passed by the caller
+ * @mode: the compositing mode to use
+ *
+ * Perform a "pop-group" paint operation.
+ *
+ * Since: 7.0.0
+ */
+void
+hb_paint_pop_group (hb_paint_funcs_t *funcs, void *paint_data,
+ hb_paint_composite_mode_t mode)
+{
+ funcs->pop_group (paint_data, mode);
+}
+
+/**
+ * hb_paint_custom_palette_color:
+ * @funcs: paint functions
+ * @paint_data: associated data passed by the caller
+ * @color_index: color index
+ * @color: (out): fetched color
+ *
+ * Gets the custom palette color for @color_index.
+ *
+ * Return value: `true` if found, `false` otherwise
+ *
+ * Since: 7.0.0
+ */
+hb_bool_t
+hb_paint_custom_palette_color (hb_paint_funcs_t *funcs, void *paint_data,
+ unsigned int color_index,
+ hb_color_t *color)
+{
+ return funcs->custom_palette_color (paint_data, color_index, color);
+}
+
+#endif