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Made the triangle colorselector resizeable. Removed minimum size request

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2004-08-17  Simon Budig  <simon@gimp.org>

	* modules/colorsel_triangle.c: Made the triangle colorselector
	resizeable. Removed minimum size request (would probably need some
	testing for *very* small sizes though).
This commit is contained in:
Simon Budig
2004-08-17 20:21:11 +00:00
committed by Simon Budig
parent 8e36dd8ffb
commit f960771bd3
2 changed files with 80 additions and 52 deletions
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126
modules/colorsel_triangle.c
View File

@ -35,9 +35,6 @@
#include "libgimp/libgimp-intl.h"
#define COLORWHEELRADIUS (GIMP_COLOR_SELECTOR_SIZE / 2)
#define COLORTRIANGLERADIUS (COLORWHEELRADIUS - GIMP_COLOR_SELECTOR_BAR_SIZE)
#define PREVIEWSIZE (2 * COLORWHEELRADIUS + 1)
#define BGCOLOR 180
#define PREVIEW_MASK (GDK_BUTTON_PRESS_MASK | \
GDK_BUTTON_RELEASE_MASK | \
@ -62,6 +59,8 @@ struct _ColorselTriangle
gdouble oldval;
gint mode;
GtkWidget *preview;
gint wheelradius;
gint triangleradius;
};
struct _ColorselTriangleClass
@ -175,26 +174,23 @@ static void
colorsel_triangle_init (ColorselTriangle *triangle)
{
GtkWidget *frame;
GtkWidget *hbox;
triangle->oldsat = 0;
triangle->oldval = 0;
triangle->mode = 0;
hbox = gtk_hbox_new (FALSE, 0);
gtk_box_pack_start (GTK_BOX (triangle), hbox, TRUE, FALSE, 0);
gtk_widget_show (hbox);
triangle->wheelradius = GIMP_COLOR_SELECTOR_SIZE / 2;
triangle->triangleradius = GIMP_COLOR_SELECTOR_SIZE / 2
- GIMP_COLOR_SELECTOR_BAR_SIZE;
frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN);
gtk_box_pack_start (GTK_BOX (hbox), frame, TRUE, FALSE, 0);
gtk_box_pack_start (GTK_BOX (triangle), frame, TRUE, TRUE, 0);
gtk_widget_show (frame);
triangle->preview = colorsel_triangle_create_preview (triangle);
gtk_container_add (GTK_CONTAINER (frame), triangle->preview);
gtk_widget_show (triangle->preview);
colorsel_triangle_update_preview (triangle);
}
static void
@ -213,7 +209,6 @@ colorsel_triangle_create_preview (ColorselTriangle *triangle)
GtkWidget *preview = gimp_preview_area_new ();
gtk_widget_add_events (GTK_WIDGET (preview), PREVIEW_MASK);
gtk_widget_set_size_request (preview, PREVIEWSIZE, PREVIEWSIZE);
g_signal_connect (preview, "motion_notify_event",
G_CALLBACK (colorsel_triangle_event),
@ -235,43 +230,58 @@ static void
colorsel_triangle_update_preview (ColorselTriangle *triangle)
{
GimpColorSelector *selector = GIMP_COLOR_SELECTOR (triangle);
guchar buf[3 * PREVIEWSIZE];
guchar *preview_buf;
guchar *preview_buf, *buf;
gint x, y, k, r2, dx, col;
gint x0, y0;
gdouble hue, sat, val, atn;
gint hx,hy, sx,sy, vx,vy;
gint width, height, size;
preview_buf = g_new (guchar, 3 * PREVIEWSIZE * PREVIEWSIZE);
memset (preview_buf, BGCOLOR, 3 * PREVIEWSIZE * PREVIEWSIZE);
width = GIMP_PREVIEW_AREA (triangle->preview)->width;
height = GIMP_PREVIEW_AREA (triangle->preview)->height;
/* return gracefully if the widget is not yet configured */
if (width * height == 0)
return;
triangle->wheelradius = MIN (width-1, height-1) / 2;
triangle->triangleradius = RINT (0.8 * triangle->wheelradius);
size = triangle->wheelradius * 2 + 1;
preview_buf = g_new (guchar, 3 * size * size);
buf = g_new (guchar, 3 * size);
memset (preview_buf, BGCOLOR, 3 * size * size);
hue = (gdouble) selector->hsv.h * 2 * G_PI;
/* Colored point (value = 1, saturation = 1) */
hx = RINT (sin (hue) * COLORTRIANGLERADIUS);
hy = RINT (cos (hue) * COLORTRIANGLERADIUS);
hx = RINT (sin (hue) * triangle->triangleradius);
hy = RINT (cos (hue) * triangle->triangleradius);
/* Black point (value = 0, saturation not important) */
sx = RINT (sin (hue - 2 * G_PI / 3) * COLORTRIANGLERADIUS);
sy = RINT (cos (hue - 2 * G_PI / 3) * COLORTRIANGLERADIUS);
sx = RINT (sin (hue - 2 * G_PI / 3) * triangle->triangleradius);
sy = RINT (cos (hue - 2 * G_PI / 3) * triangle->triangleradius);
/* White point (value = 1, saturation = 0) */
vx = RINT (sin (hue + 2 * G_PI / 3) * COLORTRIANGLERADIUS);
vy = RINT (cos (hue + 2 * G_PI / 3) * COLORTRIANGLERADIUS);
vx = RINT (sin (hue + 2 * G_PI / 3) * triangle->triangleradius);
vy = RINT (cos (hue + 2 * G_PI / 3) * triangle->triangleradius);
hue = selector->hsv.h * 360.0;
for (y = COLORWHEELRADIUS; y >= -COLORWHEELRADIUS; y--)
for (y = triangle->wheelradius; y >= -triangle->wheelradius; y--)
{
dx = RINT (sqrt (fabs (COLORWHEELRADIUS * COLORWHEELRADIUS - y * y)));
dx = RINT (sqrt (fabs (triangle->wheelradius * triangle->wheelradius -
y * y)));
for (x = -dx, k = 0; x <= dx; x++)
{
buf[k] = buf[k+1] = buf[k+2] = BGCOLOR;
r2 = (x * x) + (y * y);
if (r2 <= COLORWHEELRADIUS * COLORWHEELRADIUS)
if (r2 <= triangle->wheelradius * triangle->wheelradius)
{
if (r2 > COLORTRIANGLERADIUS * COLORTRIANGLERADIUS)
if (r2 > triangle->triangleradius * triangle->triangleradius)
{
atn = atan2 (x, y);
if (atn < 0)
@ -288,8 +298,8 @@ colorsel_triangle_update_preview (ColorselTriangle *triangle)
k += 3;
}
memcpy (preview_buf + ((COLORWHEELRADIUS - y) * PREVIEWSIZE +
COLORWHEELRADIUS - dx ) * 3,
memcpy (preview_buf + ((triangle->wheelradius - y) * size +
triangle->wheelradius - dx ) * 3,
buf,
3 * (2 * dx + 1));
}
@ -297,11 +307,11 @@ colorsel_triangle_update_preview (ColorselTriangle *triangle)
/* marker in outer ring */
x0 = RINT (sin (hue * G_PI / 180) *
((gdouble) (COLORWHEELRADIUS - COLORTRIANGLERADIUS + 1) / 2 +
COLORTRIANGLERADIUS));
((gdouble) (triangle->wheelradius - triangle->triangleradius + 1) / 2 +
triangle->triangleradius));
y0 = RINT (cos (hue * G_PI / 180) *
((gdouble) (COLORWHEELRADIUS - COLORTRIANGLERADIUS + 1) / 2 +
COLORTRIANGLERADIUS));
((gdouble) (triangle->wheelradius - triangle->triangleradius + 1) / 2 +
triangle->triangleradius));
atn = atan2 (x0, y0);
if (atn < 0)
@ -332,8 +342,8 @@ colorsel_triangle_update_preview (ColorselTriangle *triangle)
k += 3;
}
memcpy (preview_buf + ((COLORWHEELRADIUS - y) * PREVIEWSIZE +
COLORWHEELRADIUS + x0 - 4) * 3,
memcpy (preview_buf + ((triangle->wheelradius - y) * size +
triangle->wheelradius + x0 - 4) * 3,
buf,
27);
}
@ -361,7 +371,7 @@ colorsel_triangle_update_preview (ColorselTriangle *triangle)
}
else
{
if (x * x + y * y > COLORTRIANGLERADIUS * COLORTRIANGLERADIUS)
if (x * x + y * y > triangle->triangleradius * triangle->triangleradius)
{
atn = atan2 (x, y);
if (atn < 0)
@ -377,17 +387,25 @@ colorsel_triangle_update_preview (ColorselTriangle *triangle)
k += 3;
}
memcpy (preview_buf + ((COLORWHEELRADIUS - y) * PREVIEWSIZE +
COLORWHEELRADIUS + x0 - 4) * 3,
memcpy (preview_buf + ((triangle->wheelradius - y) * size +
triangle->wheelradius + x0 - 4) * 3,
buf,
27);
}
gimp_preview_area_fill (GIMP_PREVIEW_AREA (triangle->preview),
0, 0, width, height,
BGCOLOR, BGCOLOR, BGCOLOR);
gimp_preview_area_draw (GIMP_PREVIEW_AREA (triangle->preview),
0, 0, PREVIEWSIZE, PREVIEWSIZE,
(width - size) / 2,
(height - size) / 2,
size,
size,
GIMP_RGB_IMAGE,
preview_buf,
3 * PREVIEWSIZE);
3 * size);
g_free (buf);
g_free (preview_buf);
}
@ -441,24 +459,28 @@ colorsel_triangle_event (GtkWidget *widget,
gdouble r;
gdouble hue, sat, val;
gint hx,hy, sx,sy, vx,vy;
gint width, height;
width = GIMP_PREVIEW_AREA (triangle->preview)->width;
height = GIMP_PREVIEW_AREA (triangle->preview)->height;
switch (event->type)
{
case GDK_BUTTON_PRESS:
gtk_grab_add (widget);
x = event->button.x - COLORWHEELRADIUS - 1;
y = - event->button.y + COLORWHEELRADIUS + 1;
x = event->button.x - (width - 1) / 2 - 1;
y = - event->button.y + (height - 1) / 2 + 1;
r = sqrt ((gdouble) (x * x + y * y));
angle = ((gint) RINT (atan2 (x, y) / G_PI * 180) + 360 ) % 360;
if ( /* r <= COLORWHEELRADIUS && */ r > COLORTRIANGLERADIUS)
if ( /* r <= triangle->wheelradius && */ r > triangle->triangleradius)
triangle->mode = 1; /* Dragging in the Ring */
else
triangle->mode = 2; /* Dragging in the Triangle */
break;
case GDK_MOTION_NOTIFY:
x = event->motion.x - COLORWHEELRADIUS - 1;
y = - event->motion.y + COLORWHEELRADIUS + 1;
x = event->motion.x - (width - 1) / 2 - 1;
y = - event->motion.y + (height - 1) / 2 + 1;
r = sqrt ((gdouble) (x * x + y * y));
angle = ((gint) RINT (atan2 (x, y) / G_PI * 180) + 360 ) % 360;
break;
@ -475,8 +497,8 @@ colorsel_triangle_event (GtkWidget *widget,
default:
gtk_widget_get_pointer (widget, &x, &y);
x = x - COLORWHEELRADIUS - 1;
y = - y + COLORWHEELRADIUS + 1;
x = x - (width - 1) / 2 - 1;
y = - y + (height - 1) / 2 + 1;
r = sqrt ((gdouble) (x * x + y * y));
angle = ((gint) RINT (atan2 (x, y) / G_PI * 180) + 360 ) % 360;
break;
@ -488,7 +510,7 @@ colorsel_triangle_event (GtkWidget *widget,
return FALSE;
if (triangle->mode == 1 ||
(r > COLORWHEELRADIUS &&
(r > triangle->wheelradius &&
(abs (angle - selector->hsv.h * 360.0) < 30 ||
abs (abs (angle - selector->hsv.h * 360.0) - 360) < 30)))
{
@ -499,12 +521,12 @@ colorsel_triangle_event (GtkWidget *widget,
else
{
hue = selector->hsv.h * 2 * G_PI;
hx = sin (hue) * COLORTRIANGLERADIUS;
hy = cos (hue) * COLORTRIANGLERADIUS;
sx = sin (hue - 2 * G_PI / 3) * COLORTRIANGLERADIUS;
sy = cos (hue - 2 * G_PI / 3) * COLORTRIANGLERADIUS;
vx = sin (hue + 2 * G_PI / 3) * COLORTRIANGLERADIUS;
vy = cos (hue + 2 * G_PI / 3) * COLORTRIANGLERADIUS;
hx = sin (hue) * triangle->triangleradius;
hy = cos (hue) * triangle->triangleradius;
sx = sin (hue - 2 * G_PI / 3) * triangle->triangleradius;
sy = cos (hue - 2 * G_PI / 3) * triangle->triangleradius;
vx = sin (hue + 2 * G_PI / 3) * triangle->triangleradius;
vy = cos (hue + 2 * G_PI / 3) * triangle->triangleradius;
hue = selector->hsv.h * 360.0;
if ((x - sx) * vx + (y - sy) * vy < 0)