gtkfontchooserprivate.h \
gtkfontchooserutils.h \
gtkgradientprivate.h \
+ gtkhslaprivate.h \
gtkiconcache.h \
gtkiconhelperprivate.h \
gtkiconviewprivate.h \
gtkframe.c \
gtkgradient.c \
gtkgrid.c \
+ gtkhsla.c \
gtkiconcache.c \
gtkiconcachevalidator.c \
gtkiconfactory.c \
--- /dev/null
+/* GTK - The GIMP Toolkit
+ * Copyright (C) 2012 Benjamin Otte <otte@gnome.org>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include "gtkhslaprivate.h"
+
+#include <math.h>
+
+void
+_gtk_hsla_init (GtkHSLA *hsla,
+ double hue,
+ double saturation,
+ double lightness,
+ double alpha)
+{
+ g_return_if_fail (hsla != NULL);
+
+ if (hue >= 0)
+ hsla->hue = fmod (hue, 360);
+ else
+ hsla->hue = fmod (hue, 360) + 360;
+ hsla->saturation = CLAMP (saturation, 0, 1);
+ hsla->lightness = CLAMP (lightness, 0, 1);
+ hsla->alpha = CLAMP (alpha, 0, 1);
+}
+
+void
+_gtk_hsla_init_from_rgba (GtkHSLA *hsla,
+ const GdkRGBA *rgba)
+{
+ gdouble min;
+ gdouble max;
+ gdouble red;
+ gdouble green;
+ gdouble blue;
+ gdouble delta;
+
+ g_return_if_fail (hsla != NULL);
+ g_return_if_fail (rgba != NULL);
+
+ red = rgba->red;
+ green = rgba->green;
+ blue = rgba->blue;
+
+ if (red > green)
+ {
+ if (red > blue)
+ max = red;
+ else
+ max = blue;
+
+ if (green < blue)
+ min = green;
+ else
+ min = blue;
+ }
+ else
+ {
+ if (green > blue)
+ max = green;
+ else
+ max = blue;
+
+ if (red < blue)
+ min = red;
+ else
+ min = blue;
+ }
+
+ hsla->lightness = (max + min) / 2;
+ hsla->saturation = 0;
+ hsla->hue = 0;
+ hsla->alpha = rgba->alpha;
+
+ if (max != min)
+ {
+ if (hsla->lightness <= 0.5)
+ hsla->saturation = (max - min) / (max + min);
+ else
+ hsla->saturation = (max - min) / (2 - max - min);
+
+ delta = max -min;
+ if (red == max)
+ hsla->hue = (green - blue) / delta;
+ else if (green == max)
+ hsla->hue = 2 + (blue - red) / delta;
+ else if (blue == max)
+ hsla->hue = 4 + (red - green) / delta;
+
+ hsla->hue *= 60;
+ if (hsla->hue < 0.0)
+ hsla->hue += 360;
+ }
+}
+
+void
+_gdk_rgba_init_from_hsla (GdkRGBA *rgba,
+ const GtkHSLA *hsla)
+{
+ gdouble hue;
+ gdouble lightness;
+ gdouble saturation;
+ gdouble m1, m2;
+
+ lightness = hsla->lightness;
+ saturation = hsla->saturation;
+
+ if (lightness <= 0.5)
+ m2 = lightness * (1 + saturation);
+ else
+ m2 = lightness + saturation - lightness * saturation;
+ m1 = 2 * lightness - m2;
+
+ rgba->alpha = hsla->alpha;
+
+ if (saturation == 0)
+ {
+ rgba->red = lightness;
+ rgba->green = lightness;
+ rgba->blue = lightness;
+ }
+ else
+ {
+ hue = hsla->hue + 120;
+ while (hue > 360)
+ hue -= 360;
+ while (hue < 0)
+ hue += 360;
+
+ if (hue < 60)
+ rgba->red = m1 + (m2 - m1) * hue / 60;
+ else if (hue < 180)
+ rgba->red = m2;
+ else if (hue < 240)
+ rgba->red = m1 + (m2 - m1) * (240 - hue) / 60;
+ else
+ rgba->red = m1;
+
+ hue = hsla->hue;
+ while (hue > 360)
+ hue -= 360;
+ while (hue < 0)
+ hue += 360;
+
+ if (hue < 60)
+ rgba->green = m1 + (m2 - m1) * hue / 60;
+ else if (hue < 180)
+ rgba->green = m2;
+ else if (hue < 240)
+ rgba->green = m1 + (m2 - m1) * (240 - hue) / 60;
+ else
+ rgba->green = m1;
+
+ hue = hsla->hue - 120;
+ while (hue > 360)
+ hue -= 360;
+ while (hue < 0)
+ hue += 360;
+
+ if (hue < 60)
+ rgba->blue = m1 + (m2 - m1) * hue / 60;
+ else if (hue < 180)
+ rgba->blue = m2;
+ else if (hue < 240)
+ rgba->blue = m1 + (m2 - m1) * (240 - hue) / 60;
+ else
+ rgba->blue = m1;
+ }
+}
+
--- /dev/null
+/* GTK - The GIMP Toolkit
+ * Copyright (C) 2012 Benjamin Otte <otte@gnome.org>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __GTK_HSLA_PRIVATE_H__
+#define __GTK_HSLA_PRIVATE_H__
+
+#include <gdk/gdk.h>
+
+G_BEGIN_DECLS
+
+typedef struct _GtkHSLA GtkHSLA;
+
+struct _GtkHSLA {
+ double hue;
+ double saturation;
+ double lightness;
+ double alpha;
+};
+
+void _gtk_hsla_init (GtkHSLA *hsla,
+ double hue,
+ double saturation,
+ double lightness,
+ double alpha);
+void _gtk_hsla_init_from_rgba (GtkHSLA *hsla,
+ const GdkRGBA *rgba);
+/* Yes, I can name that function like this! */
+void _gdk_rgba_init_from_hsla (GdkRGBA *rgba,
+ const GtkHSLA *hsla);
+
+G_END_DECLS
+
+#endif /* __GTK_HSLA_PRIVATE_H__ */
#include "config.h"
#include "gtkcssrgbavalueprivate.h"
#include "gtkcssstylepropertyprivate.h"
+#include "gtkhslaprivate.h"
#include "gtkstylepropertyprivate.h"
#include "gtksymboliccolorprivate.h"
#include "gtkstyleproperties.h"
_gtk_css_value_unref ((GtkCssValue *) color);
}
-static void
-rgb_to_hls (gdouble *r,
- gdouble *g,
- gdouble *b)
-{
- gdouble min;
- gdouble max;
- gdouble red;
- gdouble green;
- gdouble blue;
- gdouble h, l, s;
- gdouble delta;
-
- red = *r;
- green = *g;
- blue = *b;
-
- if (red > green)
- {
- if (red > blue)
- max = red;
- else
- max = blue;
-
- if (green < blue)
- min = green;
- else
- min = blue;
- }
- else
- {
- if (green > blue)
- max = green;
- else
- max = blue;
-
- if (red < blue)
- min = red;
- else
- min = blue;
- }
-
- l = (max + min) / 2;
- s = 0;
- h = 0;
-
- if (max != min)
- {
- if (l <= 0.5)
- s = (max - min) / (max + min);
- else
- s = (max - min) / (2 - max - min);
-
- delta = max -min;
- if (red == max)
- h = (green - blue) / delta;
- else if (green == max)
- h = 2 + (blue - red) / delta;
- else if (blue == max)
- h = 4 + (red - green) / delta;
-
- h *= 60;
- if (h < 0.0)
- h += 360;
- }
-
- *r = h;
- *g = l;
- *b = s;
-}
-
-static void
-hls_to_rgb (gdouble *h,
- gdouble *l,
- gdouble *s)
-{
- gdouble hue;
- gdouble lightness;
- gdouble saturation;
- gdouble m1, m2;
- gdouble r, g, b;
-
- lightness = *l;
- saturation = *s;
-
- if (lightness <= 0.5)
- m2 = lightness * (1 + saturation);
- else
- m2 = lightness + saturation - lightness * saturation;
- m1 = 2 * lightness - m2;
-
- if (saturation == 0)
- {
- *h = lightness;
- *l = lightness;
- *s = lightness;
- }
- else
- {
- hue = *h + 120;
- while (hue > 360)
- hue -= 360;
- while (hue < 0)
- hue += 360;
-
- if (hue < 60)
- r = m1 + (m2 - m1) * hue / 60;
- else if (hue < 180)
- r = m2;
- else if (hue < 240)
- r = m1 + (m2 - m1) * (240 - hue) / 60;
- else
- r = m1;
-
- hue = *h;
- while (hue > 360)
- hue -= 360;
- while (hue < 0)
- hue += 360;
-
- if (hue < 60)
- g = m1 + (m2 - m1) * hue / 60;
- else if (hue < 180)
- g = m2;
- else if (hue < 240)
- g = m1 + (m2 - m1) * (240 - hue) / 60;
- else
- g = m1;
-
- hue = *h - 120;
- while (hue > 360)
- hue -= 360;
- while (hue < 0)
- hue += 360;
-
- if (hue < 60)
- b = m1 + (m2 - m1) * hue / 60;
- else if (hue < 180)
- b = m2;
- else if (hue < 240)
- b = m1 + (m2 - m1) * (240 - hue) / 60;
- else
- b = m1;
-
- *h = r;
- *l = g;
- *s = b;
- }
-}
-
static void
_shade_color (GdkRGBA *color,
gdouble factor)
{
- GdkRGBA temp;
+ GtkHSLA hsla;
- temp = *color;
- rgb_to_hls (&temp.red, &temp.green, &temp.blue);
+ _gtk_hsla_init_from_rgba (&hsla, color);
- temp.green *= factor;
- if (temp.green > 1.0)
- temp.green = 1.0;
- else if (temp.green < 0.0)
- temp.green = 0.0;
+ hsla.lightness *= factor;
+ hsla.lightness = CLAMP (hsla.lightness, 0.0, 1.0);
- temp.blue *= factor;
- if (temp.blue > 1.0)
- temp.blue = 1.0;
- else if (temp.blue < 0.0)
- temp.blue = 0.0;
+ hsla.hue *= factor;
+ hsla.hue = CLAMP (hsla.hue, 0.0, 1.0);
- hls_to_rgb (&temp.red, &temp.green, &temp.blue);
- *color = temp;
+ _gdk_rgba_init_from_hsla (color, &hsla);
}
/**
projects / gtk4.git / commitdiff