7515715fe4
Add basic support for text layers. We are parsing the toplevel "fonts" and "chars", and support static text.
142 lines
4.0 KiB
C
142 lines
4.0 KiB
C
/*
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* Copyright © 2020 Benjamin Otte
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*
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* Authors: Benjamin Otte <otte@gnome.org>
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*/
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#include "config.h"
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#include "ottiecolorvalueprivate.h"
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#include "ottieparserprivate.h"
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#include "ottieprinterprivate.h"
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#include <glib/gi18n-lib.h>
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static void
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ottie_color_value_interpolate (const GdkRGBA *start,
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const GdkRGBA *end,
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double progress,
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GdkRGBA *result)
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{
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result->red = start->red + progress * (end->red - start->red);
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result->green = start->green + progress * (end->green - start->green);
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result->blue = start->blue + progress * (end->blue - start->blue);
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result->alpha = start->alpha + progress * (end->alpha - start->alpha);
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}
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#define OTTIE_KEYFRAMES_NAME ottie_color_keyframes
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#define OTTIE_KEYFRAMES_TYPE_NAME OttieColorKeyframes
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#define OTTIE_KEYFRAMES_ELEMENT_TYPE GdkRGBA
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#define OTTIE_KEYFRAMES_BY_VALUE 1
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#define OTTIE_KEYFRAMES_DIMENSIONS 4
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#define OTTIE_KEYFRAMES_PARSE_FUNC ottie_parser_option_color
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#define OTTIE_KEYFRAMES_INTERPOLATE_FUNC ottie_color_value_interpolate
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#define OTTIE_KEYFRAMES_PRINT_FUNC ottie_printer_add_color
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#include "ottiekeyframesimpl.c"
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void
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ottie_color_value_init (OttieColorValue *self,
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const GdkRGBA *value)
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{
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self->is_static = TRUE;
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self->static_value = *value;
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}
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void
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ottie_color_value_clear (OttieColorValue *self)
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{
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if (!self->is_static)
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g_clear_pointer (&self->keyframes, ottie_color_keyframes_free);
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}
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void
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ottie_color_value_get (OttieColorValue *self,
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double timestamp,
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GdkRGBA *rgba)
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{
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if (self->is_static)
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{
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*rgba = self->static_value;
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return;
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}
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ottie_color_keyframes_get (self->keyframes, timestamp, rgba);
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}
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gboolean
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ottie_color_value_parse (JsonReader *reader,
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gsize offset,
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gpointer data)
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{
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OttieColorValue *self = (OttieColorValue *) ((guint8 *) data + offset);
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if (json_reader_read_member (reader, "k"))
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{
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gboolean is_static;
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if (!json_reader_is_array (reader))
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is_static = TRUE;
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else
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{
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if (json_reader_read_element (reader, 0))
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is_static = !json_reader_is_object (reader);
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else
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is_static = TRUE;
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json_reader_end_element (reader);
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}
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if (is_static)
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{
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self->is_static = TRUE;
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ottie_parser_option_color (reader, 0, &self->static_value);
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}
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else
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{
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self->is_static = FALSE;
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self->keyframes = ottie_color_keyframes_parse (reader);
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if (self->keyframes == NULL)
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{
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json_reader_end_member (reader);
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return FALSE;
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}
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}
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}
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else
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{
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ottie_parser_error_syntax (reader, "Property is not a color value");
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}
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json_reader_end_member (reader);
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return TRUE;
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}
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void
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ottie_color_value_print (OttieColorValue *self,
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const char *name,
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OttiePrinter *printer)
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{
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ottie_printer_start_object (printer, name);
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ottie_printer_add_boolean (printer, "a", !self->is_static);
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if (self->is_static)
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ottie_printer_add_color (printer, "k", &self->static_value);
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else
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ottie_color_keyframes_print (self->keyframes, printer);
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ottie_printer_end_object (printer);
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}
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