1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
|
/* The GIMP -- an image manipulation program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#include "appenv.h"
#include "color_panel.h"
#include "color_select.h"
#include "colormaps.h"
#define EVENT_MASK GDK_EXPOSURE_MASK | GDK_BUTTON_PRESS_MASK
typedef struct _ColorPanelPrivate ColorPanelPrivate;
struct _ColorPanelPrivate
{
GtkWidget *drawing_area;
GdkGC *gc;
ColorSelectP color_select;
int color_select_active;
};
static void color_panel_draw (ColorPanel *);
static gint color_panel_events (GtkWidget *area, GdkEvent *event);
static void color_panel_select_callback (int, int, int, ColorSelectState, void *);
ColorPanel *
color_panel_new (unsigned char *initial,
int width,
int height)
{
ColorPanel *color_panel;
ColorPanelPrivate *private;
int i;
color_panel = g_new (ColorPanel, 1);
private = g_new (ColorPanelPrivate, 1);
private->color_select = NULL;
private->color_select_active = 0;
private->gc = NULL;
color_panel->private_part = private;
/* set the initial color */
for (i = 0; i < 3; i++)
color_panel->color[i] = (initial) ? initial[i] : 0;
color_panel->color_panel_widget = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (color_panel->color_panel_widget), GTK_SHADOW_IN);
/* drawing area */
private->drawing_area = gtk_drawing_area_new ();
gtk_drawing_area_size (GTK_DRAWING_AREA (private->drawing_area), width, height);
gtk_widget_set_events (private->drawing_area, EVENT_MASK);
gtk_signal_connect (GTK_OBJECT (private->drawing_area), "event",
(GtkSignalFunc) color_panel_events,
color_panel);
gtk_object_set_user_data (GTK_OBJECT (private->drawing_area), color_panel);
gtk_container_add (GTK_CONTAINER (color_panel->color_panel_widget), private->drawing_area);
gtk_widget_show (private->drawing_area);
return color_panel;
}
void
color_panel_free (ColorPanel *color_panel)
{
ColorPanelPrivate *private;
private = (ColorPanelPrivate *) color_panel->private_part;
/* make sure we hide and free color_select */
if (private->color_select)
{
color_select_hide (private->color_select);
color_select_free (private->color_select);
}
if (private->gc)
gdk_gc_destroy (private->gc);
g_free (color_panel->private_part);
g_free (color_panel);
}
static void
color_panel_draw (ColorPanel *color_panel)
{
GtkWidget *widget;
ColorPanelPrivate *private;
GdkColor fg;
private = (ColorPanelPrivate *) color_panel->private_part;
widget = private->drawing_area;
fg.pixel = old_color_pixel;
store_color (&fg.pixel,
color_panel->color[0],
color_panel->color[1],
color_panel->color[2]);
gdk_gc_set_foreground (private->gc, &fg);
gdk_draw_rectangle (widget->window, private->gc, 1, 0, 0,
widget->allocation.width, widget->allocation.height);
}
static gint
color_panel_events (GtkWidget *widget,
GdkEvent *event)
{
GdkEventButton *bevent;
ColorPanel *color_panel;
ColorPanelPrivate *private;
color_panel = (ColorPanel *) gtk_object_get_user_data (GTK_OBJECT (widget));
private = (ColorPanelPrivate *) color_panel->private_part;
switch (event->type)
{
case GDK_EXPOSE:
if (!private->gc)
private->gc = gdk_gc_new (widget->window);
color_panel_draw (color_panel);
break;
case GDK_BUTTON_PRESS:
bevent = (GdkEventButton *) event;
if (bevent->button == 1)
{
if (! private->color_select)
{
private->color_select = color_select_new (color_panel->color[0],
color_panel->color[1],
color_panel->color[2],
color_panel_select_callback,
color_panel,
FALSE);
private->color_select_active = 1;
}
else
{
if (! private->color_select_active)
color_select_show (private->color_select);
color_select_set_color (private->color_select,
color_panel->color[0],
color_panel->color[1],
color_panel->color[2], 1);
}
}
break;
default:
break;
}
return FALSE;
}
static void
color_panel_select_callback (int r,
int g,
int b,
ColorSelectState state,
void *client_data)
{
ColorPanel *color_panel;
ColorPanelPrivate *private;
color_panel = (ColorPanel *) client_data;
private = (ColorPanelPrivate *) color_panel->private_part;
if (private->color_select)
{
switch (state) {
case COLOR_SELECT_UPDATE:
break;
case COLOR_SELECT_OK:
color_panel->color[0] = r;
color_panel->color[1] = g;
color_panel->color[2] = b;
color_panel_draw (color_panel);
/* Fallthrough */
case COLOR_SELECT_CANCEL:
color_select_hide (private->color_select);
private->color_select_active = 0;
}
}
}
|
