1 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*-
2 *
3 * Copyright (C) 2012 Richard Hughes <richard@hughsie.com>
4 *
5 * Licensed under the GNU Lesser General Public License Version 2.1
6 *
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this library; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22 #include "config.h"
23
24 #include <gtk/gtk.h>
25 #include <colord.h>
26
27 #include "cd-sample-widget.h"
28
29 G_DEFINE_TYPE (CdSampleWidget, cd_sample_widget, GTK_TYPE_DRAWING_AREA);
30 #define CD_SAMPLE_WIDGET_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), CD_TYPE_SAMPLE_WIDGET, CdSampleWidgetPrivate))
31
32 struct CdSampleWidgetPrivate
33 {
34 cairo_t *cr;
35 CdColorRGB color;
36 };
37
38 enum
39 {
40 PROP_0,
41 PROP_COLOR,
42 };
43
44 /**
45 * up_sample_get_property:
46 **/
47 static void
up_sample_get_property(GObject * object,guint prop_id,GValue * value,GParamSpec * pspec)48 up_sample_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
49 {
50 CdSampleWidget *sample = CD_SAMPLE_WIDGET (object);
51 switch (prop_id) {
52 case PROP_COLOR:
53 g_value_set_boxed (value, &sample->priv->color);
54 break;
55 default:
56 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
57 break;
58 }
59 }
60
61 /**
62 * up_sample_set_property:
63 **/
64 static void
up_sample_set_property(GObject * object,guint prop_id,const GValue * value,GParamSpec * pspec)65 up_sample_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
66 {
67 CdColorRGB *tmp;
68 CdSampleWidget *sample = CD_SAMPLE_WIDGET (object);
69
70 switch (prop_id) {
71 case PROP_COLOR:
72 tmp = g_value_get_boxed (value);
73 cd_color_rgb_copy (tmp, &sample->priv->color);
74 break;
75 default:
76 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
77 break;
78 }
79
80 /* refresh widget */
81 gtk_widget_hide (GTK_WIDGET (sample));
82 gtk_widget_show (GTK_WIDGET (sample));
83 }
84
85 /**
86 * cd_sample_widget_draw_rounded_rectangle:
87 **/
88 static void
cd_sample_widget_draw_rounded_rectangle(cairo_t * cr,gdouble x,gdouble y,gdouble width,gdouble height,gdouble corner_radius)89 cd_sample_widget_draw_rounded_rectangle (cairo_t *cr,
90 gdouble x,
91 gdouble y,
92 gdouble width,
93 gdouble height,
94 gdouble corner_radius)
95 {
96 gdouble aspect = width / height;
97 gdouble radius = corner_radius / aspect;
98 gdouble degrees = G_PI / 180.0;
99
100 cairo_new_sub_path (cr);
101 cairo_arc (cr, x + width - radius, y + radius,
102 radius, -90 * degrees, 0 * degrees);
103 cairo_arc (cr, x + width - radius, y + height - radius,
104 radius, 0 * degrees, 90 * degrees);
105 cairo_arc (cr, x + radius, y + height - radius,
106 radius, 90 * degrees, 180 * degrees);
107 cairo_arc (cr, x + radius, y + radius,
108 radius, 180 * degrees, 270 * degrees);
109 cairo_close_path (cr);
110 }
111
112 /**
113 * cd_sample_widget_draw:
114 **/
115 static gboolean
cd_sample_widget_draw(GtkWidget * widget,cairo_t * cr)116 cd_sample_widget_draw (GtkWidget *widget, cairo_t *cr)
117 {
118 CdColorRGB *color;
119 CdSampleWidget *sample = CD_SAMPLE_WIDGET (widget);
120 GtkAllocation allocation;
121
122 g_return_val_if_fail (CD_IS_SAMPLE_WIDGET (sample), FALSE);
123
124 color = &sample->priv->color;
125 gtk_widget_get_allocation (widget, &allocation);
126 cairo_save (cr);
127 cairo_set_source_rgb (cr, color->R, color->G, color->B);
128 cd_sample_widget_draw_rounded_rectangle (cr, 0, 0,
129 allocation.width,
130 allocation.height,
131 10.5);
132 cairo_fill_preserve (cr);
133 cairo_set_source_rgba (cr, 0.5, 0.5, 0.5, 1.0);
134 cairo_set_line_width (cr, 1.0);
135 cairo_stroke (cr);
136 cairo_restore (cr);
137 return FALSE;
138 }
139
140 /**
141 * cd_sample_window_enter_notify_event_cb:
142 **/
143 static gboolean
cd_sample_window_enter_notify_event_cb(GtkWidget * widget,GdkEvent * event,gpointer user_data)144 cd_sample_window_enter_notify_event_cb (GtkWidget *widget,
145 GdkEvent *event,
146 gpointer user_data)
147 {
148 GdkCursor *cursor;
149 GdkWindow *window;
150
151 cursor = gdk_cursor_new (GDK_BLANK_CURSOR);
152 window = gtk_widget_get_window (widget);
153 gdk_window_set_cursor (window, cursor);
154 g_object_unref (cursor);
155 return TRUE;
156 }
157
158 /**
159 * cd_sample_window_leave_notify_event_cb:
160 **/
161 static gboolean
cd_sample_window_leave_notify_event_cb(GtkWidget * widget,GdkEvent * event,gpointer user_data)162 cd_sample_window_leave_notify_event_cb (GtkWidget *widget,
163 GdkEvent *event,
164 gpointer user_data)
165 {
166 GdkCursor *cursor;
167 GdkWindow *window;
168
169 cursor = gdk_cursor_new (GDK_ARROW);
170 window = gtk_widget_get_window (widget);
171 gdk_window_set_cursor (window, cursor);
172 g_object_unref (cursor);
173 return TRUE;
174 }
175
176 /**
177 * cd_sample_widget_class_init:
178 **/
179 static void
cd_sample_widget_class_init(CdSampleWidgetClass * class)180 cd_sample_widget_class_init (CdSampleWidgetClass *class)
181 {
182 GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
183 GObjectClass *object_class = G_OBJECT_CLASS (class);
184
185 widget_class->draw = cd_sample_widget_draw;
186 object_class->get_property = up_sample_get_property;
187 object_class->set_property = up_sample_set_property;
188
189 g_type_class_add_private (class, sizeof (CdSampleWidgetPrivate));
190
191 /* properties */
192 g_object_class_install_property (object_class,
193 PROP_COLOR,
194 g_param_spec_boxed ("color", NULL, NULL,
195 CD_TYPE_COLOR_RGB,
196 G_PARAM_READWRITE));
197 }
198
199 /**
200 * cd_example_window_realize_cb:
201 **/
202 static void
cd_example_window_realize_cb(GtkWidget * widget,gpointer user_data)203 cd_example_window_realize_cb (GtkWidget *widget, gpointer user_data)
204 {
205 GdkWindow *window;
206
207 /* hide the mouse pointer when over the calibration widget */
208 window = gtk_widget_get_window (widget);
209 g_assert (window != NULL);
210 gdk_window_set_events (window, GDK_EXPOSURE_MASK |
211 GDK_ENTER_NOTIFY_MASK |
212 GDK_LEAVE_NOTIFY_MASK);
213 }
214
215 /**
216 * cd_sample_widget_init:
217 **/
218 static void
cd_sample_widget_init(CdSampleWidget * sample)219 cd_sample_widget_init (CdSampleWidget *sample)
220 {
221 sample->priv = CD_SAMPLE_WIDGET_GET_PRIVATE (sample);
222 cd_color_rgb_set (&sample->priv->color, 1.0, 1.0, 1.0);
223
224 g_signal_connect (sample, "realize",
225 G_CALLBACK (cd_example_window_realize_cb), NULL);
226 g_signal_connect (sample, "enter-notify-event",
227 G_CALLBACK (cd_sample_window_enter_notify_event_cb), NULL);
228 g_signal_connect (sample, "leave-notify-event",
229 G_CALLBACK (cd_sample_window_leave_notify_event_cb), NULL);
230 }
231
232 /**
233 * cd_sample_widget_set_color:
234 * @sample: This class instance
235 * @color: A color
236 *
237 * Sets the color for the sample widget
238 *
239 * Since: 0.1.24
240 **/
241 void
cd_sample_widget_set_color(CdSampleWidget * sample,const CdColorRGB * color)242 cd_sample_widget_set_color (CdSampleWidget *sample, const CdColorRGB *color)
243 {
244 g_return_if_fail (color != NULL);
245 g_return_if_fail (CD_IS_SAMPLE_WIDGET (sample));
246
247 /* set new color and refresh */
248 cd_color_rgb_copy (color, &sample->priv->color);
249 gtk_widget_queue_draw (GTK_WIDGET (sample));
250 }
251
252 /**
253 * cd_sample_widget_new:
254 *
255 * Return value: A new #CdSampleWidget object.
256 *
257 * Since: 0.1.24
258 **/
259 GtkWidget *
cd_sample_widget_new(void)260 cd_sample_widget_new (void)
261 {
262 return g_object_new (CD_TYPE_SAMPLE_WIDGET, NULL);
263 }
264