81da727a9c
GdkColor represents a color in the real world, by combining a color profile, an alpha value and N component values.
123 lines
3.6 KiB
C
123 lines
3.6 KiB
C
/* GDK - The GIMP Drawing Kit
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*
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* Copyright (C) 2021 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 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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#pragma once
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#define gdk_color_init(self, cs, comp) _gdk_color_init ((self), (cs), (comp))
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static inline void
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_gdk_color_init (GdkColor *self,
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GdkColorState *color_state,
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const float components[4])
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{
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self->color_state = color_state;
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self->values[0] = components[0];
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self->values[1] = components[1];
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self->values[2] = components[2];
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self->values[3] = components[3];
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}
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#define gdk_color_init_from_rgb(self, rgba) _gdk_color_init_from_rgba (self, rgba)
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static inline void
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_gdk_color_init_from_rgba (GdkColor *self,
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const GdkRGBA *rgba)
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{
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self->color_state = GDK_COLOR_STATE_SRGB;
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self->values[0] = rgba->red;
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self->values[1] = rgba->green;
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self->values[2] = rgba->blue;
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self->values[3] = rgba->alpha;
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}
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#define gdk_color_get_color_state(self) _gdk_color_get_color_state (self)
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static inline GdkColorState *
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_gdk_color_get_color_state (const GdkColor *self)
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{
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return self->color_state;
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}
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#define gdk_color_get_components(self) _gdk_color_get_components (self)
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static inline const float *
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_gdk_color_get_components (const GdkColor *self)
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{
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return self->values;
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}
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#define gdk_color_equal(self, other) _gdk_color_equal (self, other)
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static inline gboolean
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_gdk_color_equal (const GdkColor *self,
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const GdkColor *other)
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{
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return self->values[0] == other->values[0] &&
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self->values[1] == other->values[1] &&
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self->values[2] == other->values[2] &&
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self->values[3] == other->values[3] &&
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gdk_color_state_equal (self->color_state, other->color_state);
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}
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static inline gboolean
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all_zero (const GdkColor *c)
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{
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return c->values[0] == 0 && c->values[1] == 0 && c->values[2] == 0;
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}
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#define gdk_color_is_black(self) _gdk_color_is_black (self)
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static inline gboolean
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_gdk_color_is_black (const GdkColor *self)
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{
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if (gdk_color_state_equal (self->color_state, GDK_COLOR_STATE_SRGB))
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return all_zero (self);
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else
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{
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GdkColor c;
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gboolean res;
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gdk_color_convert (&c, GDK_COLOR_STATE_SRGB, self);
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res = all_zero (&c);
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return res;
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}
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}
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#define gdk_color_is_clear(self) _gdk_color_is_clear (self)
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static inline gboolean
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_gdk_color_is_clear (const GdkColor *self)
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{
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return self->values[3] < ((float) 0x00ff / (float) 0xffff);
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}
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#define gdk_color_is_opaque(self) _gdk_color_is_opaque (self)
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static inline gboolean
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_gdk_color_is_opaque (const GdkColor *self)
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{
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return self->values[3] > ((float)0xff00 / (float)0xffff);
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}
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#define gdk_color_convert(self, cs, other) _gdk_color_convert (self, cs, other)
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static inline void
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_gdk_color_convert (GdkColor *self,
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GdkColorState *color_state,
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const GdkColor *other)
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{
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if (gdk_color_state_equal (color_state, other->color_state))
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{
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gdk_color_init (self, color_state, other->values);
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return;
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}
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(gdk_color_convert) (self, color_state, other);
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}
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