gtkcolorsel.c 80.6 KB
Newer Older
1
/* GTK - The GIMP Toolkit
Owen Taylor's avatar
Owen Taylor committed
2
 * Copyright (C) 2000 Red Hat, Inc.
Elliot Lee's avatar
Elliot Lee committed
3 4 5
 * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
 *
 * This library is free software; you can redistribute it and/or
6
 * modify it under the terms of the GNU Lesser General Public
Elliot Lee's avatar
Elliot Lee committed
7 8 9 10 11 12
 * 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
13
 * Lesser General Public License for more details.
Elliot Lee's avatar
Elliot Lee committed
14
 *
15
 * You should have received a copy of the GNU Lesser General Public
16 17 18
 * License along with this library; if not, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
Elliot Lee's avatar
Elliot Lee committed
19
 */
20 21

/*
22
 * Modified by the GTK+ Team and others 1997-2001.  See the AUTHORS
23 24 25 26 27
 * file for a list of people on the GTK+ Team.  See the ChangeLog
 * files for a list of changes.  These files are distributed with
 * GTK+ at ftp://ftp.gtk.org/pub/gtk/. 
 */

28
#include <config.h>
29
#include "gdkconfig.h"
30
#include <math.h>
31

32
#include "gtkalias.h"
Owen Taylor's avatar
Owen Taylor committed
33
#include "gdk/gdkkeysyms.h"
Elliot Lee's avatar
Elliot Lee committed
34
#include "gtkcolorsel.h"
Owen Taylor's avatar
Owen Taylor committed
35
#include "gtkhsv.h"
Owen Taylor's avatar
Owen Taylor committed
36
#include "gtkwindow.h"
Owen Taylor's avatar
Owen Taylor committed
37 38 39 40
#include "gtkselection.h"
#include "gtkdnd.h"
#include "gtkdrawingarea.h"
#include "gtkhbox.h"
41
#include "gtkhbbox.h"
Owen Taylor's avatar
Owen Taylor committed
42 43 44 45
#include "gtkrc.h"
#include "gtkframe.h"
#include "gtktable.h"
#include "gtklabel.h"
46
#include "gtkmarshalers.h"
Manish Singh's avatar
Manish Singh committed
47
#include "gtkimage.h"
Owen Taylor's avatar
Owen Taylor committed
48 49 50 51 52 53
#include "gtkspinbutton.h"
#include "gtkrange.h"
#include "gtkhscale.h"
#include "gtkentry.h"
#include "gtkbutton.h"
#include "gtkhseparator.h"
54 55 56 57 58
#include "gtktooltips.h"
#include "gtkinvisible.h"
#include "gtkmenuitem.h"
#include "gtkmain.h"
#include "gtksettings.h"
59
#include "gtkintl.h"
60
#include "gtkimage.h"
61
#include "gtkstock.h"
62
#include "gtkaccessible.h"
Elliot Lee's avatar
Elliot Lee committed
63

64 65
#include <string.h>

66 67 68 69 70
#ifdef GDK_WINDOWING_X11
#include <X11/Xlib.h>
#include "x11/gdkx.h"
#endif

71 72 73 74
/* Number of elements in the custom palatte */
#define GTK_CUSTOM_PALETTE_WIDTH 10
#define GTK_CUSTOM_PALETTE_HEIGHT 2

75 76 77 78 79 80 81
/* Conversion between 0->1 double and and guint16. See
 * scale_round() below for more general conversions
 */
#define SCALE(i) (i / 65535.)
#define UNSCALE(d) ((guint16)(d * 65535 + 0.5))


82
enum {
Elliot Lee's avatar
Elliot Lee committed
83 84 85 86
  COLOR_CHANGED,
  LAST_SIGNAL
};

87 88 89 90 91
enum {
  PROP_0,
  PROP_HAS_PALETTE,
  PROP_HAS_OPACITY_CONTROL,
  PROP_CURRENT_COLOR,
92
  PROP_CURRENT_ALPHA
93 94
};

95
enum {
Owen Taylor's avatar
Owen Taylor committed
96 97 98 99 100 101 102 103
  COLORSEL_RED = 0,
  COLORSEL_GREEN = 1,
  COLORSEL_BLUE = 2,
  COLORSEL_OPACITY = 3,
  COLORSEL_HUE,
  COLORSEL_SATURATION,
  COLORSEL_VALUE,
  COLORSEL_NUM_CHANNELS
Elliot Lee's avatar
Elliot Lee committed
104 105
};

Owen Taylor's avatar
Owen Taylor committed
106
typedef struct _ColorSelectionPrivate ColorSelectionPrivate;
107

Owen Taylor's avatar
Owen Taylor committed
108
struct _ColorSelectionPrivate
Elliot Lee's avatar
Elliot Lee committed
109
{
110 111
  guint has_opacity : 1;
  guint has_palette : 1;
112 113
  guint changing : 1;
  guint default_set : 1;
114
  guint default_alpha_set : 1;
115
  
Owen Taylor's avatar
Owen Taylor committed
116 117
  gdouble color[COLORSEL_NUM_CHANNELS];
  gdouble old_color[COLORSEL_NUM_CHANNELS];
118
  
Owen Taylor's avatar
Owen Taylor committed
119 120 121 122 123 124 125 126 127 128 129 130
  GtkWidget *triangle_colorsel;
  GtkWidget *hue_spinbutton;
  GtkWidget *sat_spinbutton;
  GtkWidget *val_spinbutton;
  GtkWidget *red_spinbutton;
  GtkWidget *green_spinbutton;
  GtkWidget *blue_spinbutton;
  GtkWidget *opacity_slider;
  GtkWidget *opacity_label;
  GtkWidget *opacity_entry;
  GtkWidget *palette_frame;
  GtkWidget *hex_entry;
131
  
Owen Taylor's avatar
Owen Taylor committed
132
  /* The Palette code */
133 134
  GtkWidget *custom_palette [GTK_CUSTOM_PALETTE_WIDTH][GTK_CUSTOM_PALETTE_HEIGHT];
  
Owen Taylor's avatar
Owen Taylor committed
135 136 137 138 139
  /* The color_sample stuff */
  GtkWidget *sample_area;
  GtkWidget *old_sample;
  GtkWidget *cur_sample;
  GtkWidget *colorsel;
140 141 142 143 144 145

  /* Tooltips group */
  GtkTooltips *tooltips;

  /* Window for grabbing on */
  GtkWidget *dropper_grab_widget;
146 147

  /* Connection to settings */
148
  gulong settings_connection;
Elliot Lee's avatar
Elliot Lee committed
149 150 151
};


152
static void gtk_color_selection_init		(GtkColorSelection	 *colorsel);
Owen Taylor's avatar
Owen Taylor committed
153
static void gtk_color_selection_class_init	(GtkColorSelectionClass	 *klass);
154
static void gtk_color_selection_destroy		(GtkObject		 *object);
155
static void gtk_color_selection_finalize        (GObject		 *object);
156
static void update_color			(GtkColorSelection	 *colorsel);
157 158 159 160 161 162 163 164
static void gtk_color_selection_set_property    (GObject                 *object,
					         guint                    prop_id,
					         const GValue            *value,
					         GParamSpec              *pspec);
static void gtk_color_selection_get_property    (GObject                 *object,
					         guint                    prop_id,
					         GValue                  *value,
					         GParamSpec              *pspec);
Owen Taylor's avatar
Owen Taylor committed
165

166 167
static void gtk_color_selection_realize         (GtkWidget               *widget);
static void gtk_color_selection_unrealize       (GtkWidget               *widget);
168
static void gtk_color_selection_show_all        (GtkWidget               *widget);
169

170 171 172
static void     gtk_color_selection_set_palette_color   (GtkColorSelection *colorsel,
                                                         gint               index,
                                                         GdkColor          *color);
173 174
static GdkGC   *get_focus_gc                            (GtkWidget         *drawing_area,
							 gint              *focus_width);
175 176 177 178
static void     default_noscreen_change_palette_func    (const GdkColor    *colors,
							 gint               n_colors);
static void     default_change_palette_func             (GdkScreen	   *screen,
							 const GdkColor    *colors,
179
							 gint               n_colors);
180 181 182 183
static void     make_control_relations                  (AtkObject         *atk_obj,
                                                         GtkWidget         *widget);
static void     make_all_relations                      (AtkObject         *atk_obj,
                                                         ColorSelectionPrivate *priv);
184

185
static gpointer parent_class = NULL;
Owen Taylor's avatar
Owen Taylor committed
186 187
static guint color_selection_signals[LAST_SIGNAL] = { 0 };

188
static const gchar default_colors[] = "black:white:gray50:red:purple:blue:light blue:green:yellow:orange:lavender:brown:goldenrod4:dodger blue:pink:light green:gray10:gray30:gray75:gray90";
189

190 191
static GtkColorSelectionChangePaletteFunc noscreen_change_palette_hook = default_noscreen_change_palette_func;
static GtkColorSelectionChangePaletteWithScreenFunc change_palette_hook = default_change_palette_func;
Owen Taylor's avatar
Owen Taylor committed
192 193 194 195 196 197 198 199

/* The cursor for the dropper */
#define DROPPER_WIDTH 17
#define DROPPER_HEIGHT 17
#define DROPPER_X_HOT 2
#define DROPPER_Y_HOT 16


Matthias Clasen's avatar
Matthias Clasen committed
200
static const guchar dropper_bits[] = {
Owen Taylor's avatar
Owen Taylor committed
201 202 203 204 205 206
  0xff, 0x8f, 0x01, 0xff, 0x77, 0x01, 0xff, 0xfb, 0x00, 0xff, 0xf8, 0x00,
  0x7f, 0xff, 0x00, 0xff, 0x7e, 0x01, 0xff, 0x9d, 0x01, 0xff, 0xd8, 0x01,
  0x7f, 0xd4, 0x01, 0x3f, 0xee, 0x01, 0x1f, 0xff, 0x01, 0x8f, 0xff, 0x01,
  0xc7, 0xff, 0x01, 0xe3, 0xff, 0x01, 0xf3, 0xff, 0x01, 0xfd, 0xff, 0x01,
  0xff, 0xff, 0x01, };

Matthias Clasen's avatar
Matthias Clasen committed
207
static const guchar dropper_mask[] = {
Owen Taylor's avatar
Owen Taylor committed
208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224
  0x00, 0x70, 0x00, 0x00, 0xf8, 0x00, 0x00, 0xfc, 0x01, 0x00, 0xff, 0x01,
  0x80, 0xff, 0x01, 0x00, 0xff, 0x00, 0x00, 0x7f, 0x00, 0x80, 0x3f, 0x00,
  0xc0, 0x3f, 0x00, 0xe0, 0x13, 0x00, 0xf0, 0x01, 0x00, 0xf8, 0x00, 0x00,
  0x7c, 0x00, 0x00, 0x3e, 0x00, 0x00, 0x1e, 0x00, 0x00, 0x0d, 0x00, 0x00,
  0x02, 0x00, 0x00, };


/*
 *
 * The Sample Color
 *
 */
#define SAMPLE_WIDTH  64
#define SAMPLE_HEIGHT 28

static void color_sample_draw_sample (GtkColorSelection *colorsel, int which);
static void color_sample_draw_samples (GtkColorSelection *colorsel);
Elliot Lee's avatar
Elliot Lee committed
225

226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254
static void
set_color_internal (GtkColorSelection *colorsel,
		    gdouble           *color)
{
  ColorSelectionPrivate *priv;
  gint i;
  
  priv = colorsel->private_data;
  priv->changing = TRUE;
  priv->color[COLORSEL_RED] = color[0];
  priv->color[COLORSEL_GREEN] = color[1];
  priv->color[COLORSEL_BLUE] = color[2];
  priv->color[COLORSEL_OPACITY] = color[3];
  gtk_rgb_to_hsv (priv->color[COLORSEL_RED],
		  priv->color[COLORSEL_GREEN],
		  priv->color[COLORSEL_BLUE],
		  &priv->color[COLORSEL_HUE],
		  &priv->color[COLORSEL_SATURATION],
		  &priv->color[COLORSEL_VALUE]);
  if (priv->default_set == FALSE)
    {
      for (i = 0; i < COLORSEL_NUM_CHANNELS; i++)
	priv->old_color[i] = priv->color[i];
    }
  priv->default_set = TRUE;
  priv->default_alpha_set = TRUE;
  update_color (colorsel);
}

255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271
static void
set_color_icon (GdkDragContext *context,
		gdouble        *colors)
{
  GdkPixbuf *pixbuf;
  guint32 pixel;

  pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, FALSE,
			   8, 48, 32);

  pixel = (((UNSCALE (colors[COLORSEL_RED])   & 0xff00) << 16) |
	   ((UNSCALE (colors[COLORSEL_GREEN]) & 0xff00) << 8) |
	   ((UNSCALE (colors[COLORSEL_BLUE])  & 0xff00)));

  gdk_pixbuf_fill (pixbuf, pixel);
  
  gtk_drag_set_icon_pixbuf (context, pixbuf, -2, -2);
Manish Singh's avatar
Manish Singh committed
272
  g_object_unref (pixbuf);
273 274
}

275
static void
Owen Taylor's avatar
Owen Taylor committed
276 277 278
color_sample_drag_begin (GtkWidget      *widget,
			 GdkDragContext *context,
			 gpointer        data)
Elliot Lee's avatar
Elliot Lee committed
279
{
Owen Taylor's avatar
Owen Taylor committed
280 281 282
  GtkColorSelection *colorsel = data;
  ColorSelectionPrivate *priv;
  gdouble *colsrc;
283
  
284
  priv = colorsel->private_data;
285
  
Owen Taylor's avatar
Owen Taylor committed
286 287 288 289
  if (widget == priv->old_sample)
    colsrc = priv->old_color;
  else
    colsrc = priv->color;
290 291

  set_color_icon (context, colsrc);
Elliot Lee's avatar
Elliot Lee committed
292 293
}

294
static void
Owen Taylor's avatar
Owen Taylor committed
295 296 297
color_sample_drag_end (GtkWidget      *widget,
		       GdkDragContext *context,
		       gpointer        data)
Elliot Lee's avatar
Elliot Lee committed
298
{
Manish Singh's avatar
Manish Singh committed
299
  g_object_set_data (G_OBJECT (widget), "gtk-color-selection-drag-window", NULL);
Owen Taylor's avatar
Owen Taylor committed
300
}
Elliot Lee's avatar
Elliot Lee committed
301

Owen Taylor's avatar
Owen Taylor committed
302 303 304 305 306 307 308 309 310 311 312 313 314 315
static void
color_sample_drop_handle (GtkWidget        *widget,
			  GdkDragContext   *context,
			  gint              x,
			  gint              y,
			  GtkSelectionData *selection_data,
			  guint             info,
			  guint             time,
			  gpointer          data)
{
  GtkColorSelection *colorsel = data;
  ColorSelectionPrivate *priv;
  guint16 *vals;
  gdouble color[4];
316
  priv = colorsel->private_data;
317
  
Owen Taylor's avatar
Owen Taylor committed
318 319 320 321 322 323
  /* This is currently a guint16 array of the format:
   * R
   * G
   * B
   * opacity
   */
324
  
Owen Taylor's avatar
Owen Taylor committed
325 326
  if (selection_data->length < 0)
    return;
327
  
328 329 330 331
  /* We accept drops with the wrong format, since the KDE color
   * chooser incorrectly drops application/x-color with format 8.
   */
  if (selection_data->length != 8)
Owen Taylor's avatar
Owen Taylor committed
332 333 334
    {
      g_warning ("Received invalid color data\n");
      return;
Elliot Lee's avatar
Elliot Lee committed
335
    }
336
  
Owen Taylor's avatar
Owen Taylor committed
337
  vals = (guint16 *)selection_data->data;
338
  
Owen Taylor's avatar
Owen Taylor committed
339
  if (widget == priv->cur_sample)
340
    {
Owen Taylor's avatar
Owen Taylor committed
341 342 343 344
      color[0] = (gdouble)vals[0] / 0xffff;
      color[1] = (gdouble)vals[1] / 0xffff;
      color[2] = (gdouble)vals[2] / 0xffff;
      color[3] = (gdouble)vals[3] / 0xffff;
345
      
346
      set_color_internal (colorsel, color);
347 348 349 350
    }
}

static void
Owen Taylor's avatar
Owen Taylor committed
351 352 353 354 355 356
color_sample_drag_handle (GtkWidget        *widget,
			  GdkDragContext   *context,
			  GtkSelectionData *selection_data,
			  guint             info,
			  guint             time,
			  gpointer          data)
357
{
Owen Taylor's avatar
Owen Taylor committed
358 359 360 361
  GtkColorSelection *colorsel = data;
  ColorSelectionPrivate *priv;
  guint16 vals[4];
  gdouble *colsrc;
362
  
363
  priv = colorsel->private_data;
364
  
Owen Taylor's avatar
Owen Taylor committed
365 366 367 368
  if (widget == priv->old_sample)
    colsrc = priv->old_color;
  else
    colsrc = priv->color;
369
  
Owen Taylor's avatar
Owen Taylor committed
370 371 372
  vals[0] = colsrc[COLORSEL_RED] * 0xffff;
  vals[1] = colsrc[COLORSEL_GREEN] * 0xffff;
  vals[2] = colsrc[COLORSEL_BLUE] * 0xffff;
373
  vals[3] = priv->has_opacity ? colsrc[COLORSEL_OPACITY] * 0xffff : 0xffff;
374
  
Owen Taylor's avatar
Owen Taylor committed
375 376 377
  gtk_selection_data_set (selection_data,
			  gdk_atom_intern ("application/x-color", FALSE),
			  16, (guchar *)vals, 8);
Elliot Lee's avatar
Elliot Lee committed
378 379
}

Owen Taylor's avatar
Owen Taylor committed
380 381 382
/* which = 0 means draw old sample, which = 1 means draw new */
static void
color_sample_draw_sample (GtkColorSelection *colorsel, int which)
Elliot Lee's avatar
Elliot Lee committed
383
{
Owen Taylor's avatar
Owen Taylor committed
384 385 386 387 388 389
  GtkWidget *da;
  gint x, y, i, wid, heig, f, n, goff;
  guchar c[3 * 2], cc[3 * 4], *cp = c;
  gdouble o;
  guchar *buf;
  ColorSelectionPrivate *priv;
390
  
Elliot Lee's avatar
Elliot Lee committed
391
  g_return_if_fail (colorsel != NULL);
392
  priv = colorsel->private_data;
393
  
Owen Taylor's avatar
Owen Taylor committed
394 395 396
  g_return_if_fail (priv->sample_area != NULL);
  if (!GTK_WIDGET_DRAWABLE (priv->sample_area))
    return;
397
  
Owen Taylor's avatar
Owen Taylor committed
398 399 400 401
  if (which == 0)
    {
      da = priv->old_sample;
      for (n = 0, i = COLORSEL_RED; n < 3; n++, i++)
402
	c[n] = (guchar) (UNSCALE (priv->old_color[i]) >> 8);
Owen Taylor's avatar
Owen Taylor committed
403 404 405 406 407 408
      goff = 0;
    }
  else
    {
      da = priv->cur_sample;
      for (n = 0, i = COLORSEL_RED; n < 3; n++, i++)
409
	c[n] = (guchar) (UNSCALE (priv->color[i]) >> 8);
Owen Taylor's avatar
Owen Taylor committed
410
      goff =  priv->old_sample->allocation.width % 32;
Elliot Lee's avatar
Elliot Lee committed
411
    }
412
  
Owen Taylor's avatar
Owen Taylor committed
413 414
  wid = da->allocation.width;
  heig = da->allocation.height;
415
  
416
  buf = g_new (guchar, 3 * wid * heig);
417
  
Owen Taylor's avatar
Owen Taylor committed
418 419 420 421 422 423 424 425
#if 0
  i = COLORSEL_RED;
  for (n = 0; n < 3; n++)
    {
      c[n] = (guchar) (255.0 * priv->old_color[i]);
      c[n + 3] = (guchar) (255.0 * priv->color[i++]);
    }
#endif
426
  
427
  if (priv->has_opacity)
Elliot Lee's avatar
Elliot Lee committed
428
    {
Owen Taylor's avatar
Owen Taylor committed
429
      o = (which) ? priv->color[COLORSEL_OPACITY] : priv->old_color[COLORSEL_OPACITY];
430
      
Owen Taylor's avatar
Owen Taylor committed
431 432 433 434 435 436
      for (n = 0; n < 3; n++)
	{
	  cc[n] = (guchar) ((1.0 - o) * 192 + (o * (gdouble) c[n]));
	  cc[n + 3] = (guchar) ((1.0 - o) * 128 + (o * (gdouble) c[n]));
	}
      cp = cc;
Elliot Lee's avatar
Elliot Lee committed
437
    }
438
  
Owen Taylor's avatar
Owen Taylor committed
439 440
  i = 0;
  for (y = 0; y < heig; y++)
Elliot Lee's avatar
Elliot Lee committed
441
    {
Owen Taylor's avatar
Owen Taylor committed
442 443
      for (x = 0; x < wid; x++)
	{
444
	  if (priv->has_opacity)
Owen Taylor's avatar
Owen Taylor committed
445 446 447
	    f = 3 * ((((goff + x) % 32) < 16) ^ ((y % 32) < 16));
	  else
	    f = 0;
448
	  
Owen Taylor's avatar
Owen Taylor committed
449 450 451
	  for (n = 0; n < 3; n++)
	    buf[i++] = cp[n + f];
	}
Elliot Lee's avatar
Elliot Lee committed
452
    }
453
  
454 455 456 457 458 459 460
  gdk_draw_rgb_image (da->window,
		      da->style->black_gc,
		      0, 0,
		      wid, heig,
		      GDK_RGB_DITHER_NORMAL,
		      buf,
		      3*wid);
461 462
  
  
Owen Taylor's avatar
Owen Taylor committed
463
  g_free (buf);
Elliot Lee's avatar
Elliot Lee committed
464 465 466
}


Owen Taylor's avatar
Owen Taylor committed
467 468 469 470 471 472
static void
color_sample_draw_samples (GtkColorSelection *colorsel)
{
  color_sample_draw_sample (colorsel, 0);
  color_sample_draw_sample (colorsel, 1);
}
Elliot Lee's avatar
Elliot Lee committed
473

474
static gboolean
475 476 477
color_old_sample_expose (GtkWidget         *da,
			 GdkEventExpose    *event,
			 GtkColorSelection *colorsel)
Owen Taylor's avatar
Owen Taylor committed
478 479
{
  color_sample_draw_sample (colorsel, 0);
480
  return FALSE;
Elliot Lee's avatar
Elliot Lee committed
481 482
}

Owen Taylor's avatar
Owen Taylor committed
483

484
static gboolean
485 486 487
color_cur_sample_expose (GtkWidget         *da,
			 GdkEventExpose    *event,
			 GtkColorSelection *colorsel)
Elliot Lee's avatar
Elliot Lee committed
488
{
Owen Taylor's avatar
Owen Taylor committed
489
  color_sample_draw_sample (colorsel, 1);
490
  return FALSE;
Owen Taylor's avatar
Owen Taylor committed
491
}
492

Owen Taylor's avatar
Owen Taylor committed
493 494 495
static void
color_sample_setup_dnd (GtkColorSelection *colorsel, GtkWidget *sample)
{
496
  static const GtkTargetEntry targets[] = {
497 498
    { "application/x-color", 0 }
  };
Owen Taylor's avatar
Owen Taylor committed
499
  ColorSelectionPrivate *priv;
500
  priv = colorsel->private_data;
501
  
Owen Taylor's avatar
Owen Taylor committed
502
  gtk_drag_source_set (sample,
503 504 505
		       GDK_BUTTON1_MASK | GDK_BUTTON3_MASK,
		       targets, 1,
		       GDK_ACTION_COPY | GDK_ACTION_MOVE);
506
  
Manish Singh's avatar
Manish Singh committed
507 508 509 510
  g_signal_connect (sample,
		    "drag_begin",
		    G_CALLBACK (color_sample_drag_begin),
		    colorsel);
Owen Taylor's avatar
Owen Taylor committed
511 512
  if (sample == priv->cur_sample)
    {
513
      
Owen Taylor's avatar
Owen Taylor committed
514 515 516 517 518 519
      gtk_drag_dest_set (sample,
			 GTK_DEST_DEFAULT_HIGHLIGHT |
			 GTK_DEST_DEFAULT_MOTION |
			 GTK_DEST_DEFAULT_DROP,
			 targets, 1,
			 GDK_ACTION_COPY);
520
      
Manish Singh's avatar
Manish Singh committed
521 522 523 524
      g_signal_connect (sample,
			"drag_end",
			G_CALLBACK (color_sample_drag_end),
			colorsel);
Owen Taylor's avatar
Owen Taylor committed
525
    }
526
  
Manish Singh's avatar
Manish Singh committed
527 528 529 530 531 532 533 534
  g_signal_connect (sample,
		    "drag_data_get",
		    G_CALLBACK (color_sample_drag_handle),
		    colorsel);
  g_signal_connect (sample,
		    "drag_data_received",
		    G_CALLBACK (color_sample_drop_handle),
		    colorsel);
535
  
Elliot Lee's avatar
Elliot Lee committed
536 537
}

Owen Taylor's avatar
Owen Taylor committed
538

539
static void
Owen Taylor's avatar
Owen Taylor committed
540
color_sample_new (GtkColorSelection *colorsel)
541
{
Owen Taylor's avatar
Owen Taylor committed
542
  ColorSelectionPrivate *priv;
543
  
544
  priv = colorsel->private_data;
545
  
Owen Taylor's avatar
Owen Taylor committed
546 547 548
  priv->sample_area = gtk_hbox_new (FALSE, 0);
  priv->old_sample = gtk_drawing_area_new ();
  priv->cur_sample = gtk_drawing_area_new ();
549 550 551 552 553 554

  /* We need enter/leave to do tooltips */
  gtk_widget_add_events (priv->old_sample,
                         GDK_ENTER_NOTIFY_MASK | GDK_LEAVE_NOTIFY_MASK);
  gtk_widget_add_events (priv->cur_sample,
                         GDK_ENTER_NOTIFY_MASK | GDK_LEAVE_NOTIFY_MASK);
555
  
Owen Taylor's avatar
Owen Taylor committed
556 557 558 559
  gtk_box_pack_start (GTK_BOX (priv->sample_area), priv->old_sample,
		      TRUE, TRUE, 0);
  gtk_box_pack_start (GTK_BOX (priv->sample_area), priv->cur_sample,
		      TRUE, TRUE, 0);
560
  
Manish Singh's avatar
Manish Singh committed
561 562 563 564 565 566
  g_signal_connect (priv->old_sample, "expose_event",
		    G_CALLBACK (color_old_sample_expose),
		    colorsel);
  g_signal_connect (priv->cur_sample, "expose_event",
		    G_CALLBACK (color_cur_sample_expose),
		    colorsel);
567
  
Owen Taylor's avatar
Owen Taylor committed
568 569
  color_sample_setup_dnd (colorsel, priv->old_sample);
  color_sample_setup_dnd (colorsel, priv->cur_sample);
570 571 572 573 574 575 576 577 578

  gtk_tooltips_set_tip (priv->tooltips,
                        priv->old_sample,
                        _("The previously-selected color, for comparison to the color you're selecting now. You can drag this color to a palette entry, or select this color as current by dragging it to the other color swatch alongside."), NULL);


  gtk_tooltips_set_tip (priv->tooltips,
                        priv->cur_sample,
                        _("The color you've chosen. You can drag this color to a palette entry to save it for use in the future."), NULL);
579
  
Owen Taylor's avatar
Owen Taylor committed
580
  gtk_widget_show_all (priv->sample_area);
Elliot Lee's avatar
Elliot Lee committed
581 582
}

Owen Taylor's avatar
Owen Taylor committed
583 584 585 586 587 588

/*
 *
 * The palette area code
 *
 */
589 590
#define CUSTOM_PALETTE_ENTRY_WIDTH   20
#define CUSTOM_PALETTE_ENTRY_HEIGHT  20
Owen Taylor's avatar
Owen Taylor committed
591

Elliot Lee's avatar
Elliot Lee committed
592
static void
Owen Taylor's avatar
Owen Taylor committed
593
palette_get_color (GtkWidget *drawing_area, gdouble *color)
Elliot Lee's avatar
Elliot Lee committed
594
{
Owen Taylor's avatar
Owen Taylor committed
595
  gdouble *color_val;
596
  
Owen Taylor's avatar
Owen Taylor committed
597
  g_return_if_fail (color != NULL);
598
  
Manish Singh's avatar
Manish Singh committed
599
  color_val = g_object_get_data (G_OBJECT (drawing_area), "color_val");
Owen Taylor's avatar
Owen Taylor committed
600
  if (color_val == NULL)
Elliot Lee's avatar
Elliot Lee committed
601
    {
Owen Taylor's avatar
Owen Taylor committed
602 603 604 605 606 607
      /* Default to white for no good reason */
      color[0] = 1.0;
      color[1] = 1.0;
      color[2] = 1.0;
      color[3] = 1.0;
      return;
Elliot Lee's avatar
Elliot Lee committed
608
    }
609
  
Owen Taylor's avatar
Owen Taylor committed
610 611 612 613
  color[0] = color_val[0];
  color[1] = color_val[1];
  color[2] = color_val[2];
  color[3] = 1.0;
Elliot Lee's avatar
Elliot Lee committed
614 615
}

Owen Taylor's avatar
Owen Taylor committed
616
#define INTENSITY(r, g, b) ((r) * 0.30 + (g) * 0.59 + (b) * 0.11)
Elliot Lee's avatar
Elliot Lee committed
617
static void
618 619 620
palette_paint (GtkWidget    *drawing_area,
	       GdkRectangle *area,
	       gpointer      data)
Elliot Lee's avatar
Elliot Lee committed
621
{
Owen Taylor's avatar
Owen Taylor committed
622 623
  if (drawing_area->window == NULL)
    return;
624 625 626 627 628

  gdk_draw_rectangle (drawing_area->window,
                      drawing_area->style->bg_gc[GTK_STATE_NORMAL],
                      TRUE,
                      area->x, area->y, area->width, area->height);
629
  
630
  if (GTK_WIDGET_HAS_FOCUS (drawing_area))
Owen Taylor's avatar
Owen Taylor committed
631
    {
632 633
      gint focus_width;
      GdkGC *gc = get_focus_gc (drawing_area, &focus_width);
Owen Taylor's avatar
Owen Taylor committed
634
      gdk_draw_rectangle (drawing_area->window,
635 636 637 638
			  gc, FALSE, focus_width / 2, focus_width / 2,
			  drawing_area->allocation.width - focus_width,
			  drawing_area->allocation.height - focus_width);
      g_object_unref (gc);
Elliot Lee's avatar
Elliot Lee committed
639 640 641
    }
}

642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666
static GdkGC *
get_focus_gc (GtkWidget *drawing_area,
	      gint      *focus_width)
{
  GdkGC *gc = gdk_gc_new (drawing_area->window);
  gdouble color[4];
  gint8 *dash_list;
  
  gtk_widget_style_get (drawing_area,
			"focus-line-width", focus_width,
			"focus-line-pattern", (gchar *)&dash_list,
			NULL);
      
  palette_get_color (drawing_area, color);
      
  if (INTENSITY (color[0], color[1], color[2]) > 0.5)
    gdk_gc_copy (gc, drawing_area->style->black_gc);
  else
    gdk_gc_copy (gc, drawing_area->style->white_gc);

  gdk_gc_set_line_attributes (gc, *focus_width,
			      dash_list[0] ? GDK_LINE_ON_OFF_DASH : GDK_LINE_SOLID,
			      GDK_CAP_BUTT, GDK_JOIN_MITER);

  if (dash_list[0])
667
    gdk_gc_set_dashes (gc, 0, dash_list, strlen ((char *)dash_list));
668

Anders Carlsson's avatar
Anders Carlsson committed
669 670
  g_free (dash_list);
  
671 672
  return gc;
}
Elliot Lee's avatar
Elliot Lee committed
673 674

static void
Owen Taylor's avatar
Owen Taylor committed
675 676 677
palette_drag_begin (GtkWidget      *widget,
		    GdkDragContext *context,
		    gpointer        data)
678 679
{
  gdouble colors[4];
680
  
Owen Taylor's avatar
Owen Taylor committed
681
  palette_get_color (widget, colors);
682
  set_color_icon (context, colors);
683 684
}

685
static void
Owen Taylor's avatar
Owen Taylor committed
686 687 688 689 690 691 692 693 694
palette_drag_handle (GtkWidget        *widget,
		     GdkDragContext   *context,
		     GtkSelectionData *selection_data,
		     guint             info,
		     guint             time,
		     gpointer          data)
{
  guint16 vals[4];
  gdouble colsrc[4];
695
  
Owen Taylor's avatar
Owen Taylor committed
696
  palette_get_color (widget, colsrc);
697
  
Owen Taylor's avatar
Owen Taylor committed
698 699 700 701
  vals[0] = colsrc[COLORSEL_RED] * 0xffff;
  vals[1] = colsrc[COLORSEL_GREEN] * 0xffff;
  vals[2] = colsrc[COLORSEL_BLUE] * 0xffff;
  vals[3] = 0xffff;
702
  
Owen Taylor's avatar
Owen Taylor committed
703 704 705 706 707
  gtk_selection_data_set (selection_data,
			  gdk_atom_intern ("application/x-color", FALSE),
			  16, (guchar *)vals, 8);
}

708 709 710 711 712
static void
palette_drag_end (GtkWidget      *widget,
		  GdkDragContext *context,
		  gpointer        data)
{
Manish Singh's avatar
Manish Singh committed
713
  g_object_set_data (G_OBJECT (widget), "gtk-color-selection-drag-window", NULL);
714 715
}

716 717 718 719 720 721 722 723 724
static GdkColor *
get_current_colors (GtkColorSelection *colorsel)
{
  GtkSettings *settings;
  GdkColor *colors = NULL;
  gint n_colors = 0;
  gchar *palette;

  settings = gtk_widget_get_settings (GTK_WIDGET (colorsel));
725
  g_object_get (settings,
726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755
		"gtk-color-palette", &palette,
		NULL);
  
  if (!gtk_color_selection_palette_from_string (palette, &colors, &n_colors))
    {
      gtk_color_selection_palette_from_string (default_colors, &colors, &n_colors);
    }
  else
    {
      /* If there are less colors provided than the number of slots in the
       * color selection, we fill in the rest from the defaults.
       */
      if (n_colors < (GTK_CUSTOM_PALETTE_WIDTH * GTK_CUSTOM_PALETTE_HEIGHT))
	{
	  GdkColor *tmp_colors = colors;
	  gint tmp_n_colors = n_colors;
	  
	  gtk_color_selection_palette_from_string (default_colors, &colors, &n_colors);
	  memcpy (colors, tmp_colors, sizeof (GdkColor) * tmp_n_colors);

	  g_free (tmp_colors);
	}
    }

  g_assert (n_colors >= GTK_CUSTOM_PALETTE_WIDTH * GTK_CUSTOM_PALETTE_HEIGHT);
  g_free (palette);
  
  return colors;
}

756 757 758 759 760 761 762 763 764
/* Changes the model color */
static void
palette_change_color (GtkWidget         *drawing_area,
                      GtkColorSelection *colorsel,
                      gdouble           *color)
{
  gint x, y;
  ColorSelectionPrivate *priv;
  GdkColor gdk_color;
765 766
  GdkColor *current_colors;
  GdkScreen *screen;
767 768 769 770 771 772

  g_return_if_fail (GTK_IS_COLOR_SELECTION (colorsel));
  g_return_if_fail (GTK_IS_DRAWING_AREA (drawing_area));
  
  priv = colorsel->private_data;
  
773 774 775
  gdk_color.red = UNSCALE (color[0]);
  gdk_color.green = UNSCALE (color[1]);
  gdk_color.blue = UNSCALE (color[2]);
776 777

  x = 0;
778
  y = 0;			/* Quiet GCC */
779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796
  while (x < GTK_CUSTOM_PALETTE_WIDTH)
    {
      y = 0;
      while (y < GTK_CUSTOM_PALETTE_HEIGHT)
        {
          if (priv->custom_palette[x][y] == drawing_area)
            goto out;
          
          ++y;
        }

      ++x;
    }

 out:
  
  g_assert (x < GTK_CUSTOM_PALETTE_WIDTH || y < GTK_CUSTOM_PALETTE_HEIGHT);

797
  current_colors = get_current_colors (colorsel);
798 799
  current_colors[y * GTK_CUSTOM_PALETTE_WIDTH + x] = gdk_color;

800 801 802 803 804 805
  screen = gtk_widget_get_screen (GTK_WIDGET (colorsel));
  if (change_palette_hook != default_change_palette_func)
    (* change_palette_hook) (screen, current_colors, 
			     GTK_CUSTOM_PALETTE_WIDTH * GTK_CUSTOM_PALETTE_HEIGHT);
  else if (noscreen_change_palette_hook != default_noscreen_change_palette_func)
    {
Owen Taylor's avatar
Owen Taylor committed
806
      if (screen != gdk_screen_get_default ())
807 808 809 810 811 812 813 814 815
	g_warning ("gtk_color_selection_set_change_palette_hook used by widget is not on the default screen.");
      (* noscreen_change_palette_hook) (current_colors, 
					GTK_CUSTOM_PALETTE_WIDTH * GTK_CUSTOM_PALETTE_HEIGHT);
    }
  else
    (* change_palette_hook) (screen, current_colors, 
			     GTK_CUSTOM_PALETTE_WIDTH * GTK_CUSTOM_PALETTE_HEIGHT);

  g_free (current_colors);
816 817 818
}

/* Changes the view color */
Owen Taylor's avatar
Owen Taylor committed
819
static void
820 821 822
palette_set_color (GtkWidget         *drawing_area,
		   GtkColorSelection *colorsel,
		   gdouble           *color)
Owen Taylor's avatar
Owen Taylor committed
823 824
{
  gdouble *new_color = g_new (double, 4);
825
  GdkColor gdk_color;
826
  
827 828 829
  gdk_color.red = UNSCALE (color[0]);
  gdk_color.green = UNSCALE (color[1]);
  gdk_color.blue = UNSCALE (color[2]);
830 831

  gtk_widget_modify_bg (drawing_area, GTK_STATE_NORMAL, &gdk_color);
832
  
Manish Singh's avatar
Manish Singh committed
833
  if (GPOINTER_TO_INT (g_object_get_data (G_OBJECT (drawing_area), "color_set")) == 0)
Owen Taylor's avatar
Owen Taylor committed
834 835 836 837 838 839 840 841
    {
      static const GtkTargetEntry targets[] = {
	{ "application/x-color", 0 }
      };
      gtk_drag_source_set (drawing_area,
			   GDK_BUTTON1_MASK | GDK_BUTTON3_MASK,
			   targets, 1,
			   GDK_ACTION_COPY | GDK_ACTION_MOVE);
842
      
Manish Singh's avatar
Manish Singh committed
843 844 845 846 847 848 849 850
      g_signal_connect (drawing_area,
			"drag_begin",
			G_CALLBACK (palette_drag_begin),
			colorsel);
      g_signal_connect (drawing_area,
			"drag_data_get",
			G_CALLBACK (palette_drag_handle),
			colorsel);
851
      
Manish Singh's avatar
Manish Singh committed
852 853
      g_object_set_data (G_OBJECT (drawing_area), "color_set",
			 GINT_TO_POINTER (1));
Owen Taylor's avatar
Owen Taylor committed
854
    }
855

Owen Taylor's avatar
Owen Taylor committed
856 857 858 859
  new_color[0] = color[0];
  new_color[1] = color[1];
  new_color[2] = color[2];
  new_color[3] = 1.0;
860
  
861
  g_object_set_data_full (G_OBJECT (drawing_area), "color_val", new_color, (GDestroyNotify)g_free);
Owen Taylor's avatar
Owen Taylor committed
862 863
}

864
static gboolean
865 866 867
palette_expose (GtkWidget      *drawing_area,
		GdkEventExpose *event,
		gpointer        data)
868
{
869
  if (drawing_area->window == NULL)
870
    return FALSE;
871 872
  
  palette_paint (drawing_area, &(event->area), data);
873 874
  
  return FALSE;
875 876 877 878 879 880 881 882 883 884 885 886
}

static void
popup_position_func (GtkMenu   *menu,
                     gint      *x,
                     gint      *y,
                     gboolean  *push_in,
                     gpointer	user_data)
{
  GtkWidget *widget;
  GtkRequisition req;      
  gint root_x, root_y;
887
  GdkScreen *screen;
888 889 890 891 892 893 894 895 896 897 898 899 900 901
  
  widget = GTK_WIDGET (user_data);
  
  g_return_if_fail (GTK_WIDGET_REALIZED (widget));

  gdk_window_get_origin (widget->window, &root_x, &root_y);
  
  gtk_widget_size_request (GTK_WIDGET (menu), &req);

  /* Put corner of menu centered on color cell */
  *x = root_x + widget->allocation.width / 2;
  *y = root_y + widget->allocation.height / 2;

  /* Ensure sanity */
902 903 904
  screen = gtk_widget_get_screen (widget);
  *x = CLAMP (*x, 0, MAX (0, gdk_screen_get_width (screen) - req.width));
  *y = CLAMP (*y, 0, MAX (0, gdk_screen_get_height (screen) - req.height));
905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938
}

static void
save_color_selected (GtkWidget *menuitem,
                     gpointer   data)
{
  GtkColorSelection *colorsel;
  GtkWidget *drawing_area;
  ColorSelectionPrivate *priv;

  drawing_area = GTK_WIDGET (data);
  
  colorsel = GTK_COLOR_SELECTION (g_object_get_data (G_OBJECT (drawing_area),
                                                     "gtk-color-sel"));

  priv = colorsel->private_data;
  
  palette_change_color (drawing_area, colorsel, priv->color);  
}

static void
do_popup (GtkColorSelection *colorsel,
          GtkWidget         *drawing_area,
          guint32            timestamp)
{
  GtkWidget *menu;
  GtkWidget *mi;
  
  g_object_set_data (G_OBJECT (drawing_area),
                     "gtk-color-sel",
                     colorsel);
  
  menu = gtk_menu_new ();

939
  mi = gtk_menu_item_new_with_mnemonic (_("_Save color here"));
940

Manish Singh's avatar
Manish Singh committed
941 942 943
  g_signal_connect (mi, "activate",
                    G_CALLBACK (save_color_selected),
                    drawing_area);
944 945 946 947 948 949 950 951 952 953 954
  
  gtk_menu_shell_append (GTK_MENU_SHELL (menu), mi);

  gtk_widget_show_all (mi);

  gtk_menu_popup (GTK_MENU (menu), NULL, NULL,
                  popup_position_func, drawing_area,
                  3, timestamp);
}


955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979
static gboolean
palette_enter (GtkWidget        *drawing_area,
	       GdkEventCrossing *event,
	       gpointer        data)
{
  g_object_set_data (G_OBJECT (drawing_area),
		     "gtk-colorsel-have-pointer",
		     GUINT_TO_POINTER (TRUE));

  return FALSE;
}

static gboolean
palette_leave (GtkWidget        *drawing_area,
	       GdkEventCrossing *event,
	       gpointer        data)
{
  g_object_set_data (G_OBJECT (drawing_area),
		     "gtk-colorsel-have-pointer",
		     NULL);

  return FALSE;
}

static gboolean
980 981 982 983 984 985 986 987
palette_press (GtkWidget      *drawing_area,
	       GdkEventButton *event,
	       gpointer        data)
{
  GtkColorSelection *colorsel = GTK_COLOR_SELECTION (data);

  gtk_widget_grab_focus (drawing_area);
  
988
  if (event->button == 3 &&
989
      event->type == GDK_BUTTON_PRESS)
990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010
    {
      do_popup (colorsel, drawing_area, event->time);
      return TRUE;
    }

  return FALSE;
}

static gboolean
palette_release (GtkWidget      *drawing_area,
		 GdkEventButton *event,
		 gpointer        data)
{
  GtkColorSelection *colorsel = GTK_COLOR_SELECTION (data);

  gtk_widget_grab_focus (drawing_area);

  if (event->button == 1 &&
      g_object_get_data (G_OBJECT (drawing_area),
			 "gtk-colorsel-have-pointer") != NULL)
    {
Manish Singh's avatar
Manish Singh committed
1011
      if (GPOINTER_TO_INT (g_object_get_data (G_OBJECT (drawing_area), "color_set")) != 0)
1012 1013 1014
        {
          gdouble color[4];
          palette_get_color (drawing_area, color);
1015
          set_color_internal (colorsel, color);
1016 1017
        }
    }
1018 1019

  return FALSE;
1020 1021
}

1022
static void
Owen Taylor's avatar