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1 | harbaum | 1 | /* |
2 | * Copyright (C) 2008 Till Harbaum <till@harbaum.org>. | ||
3 | * | ||
4 | * This file is part of GPXView. | ||
5 | * | ||
6 | * GPXView is free software: you can redistribute it and/or modify | ||
7 | * it under the terms of the GNU General Public License as published by | ||
8 | * the Free Software Foundation, either version 3 of the License, or | ||
9 | * (at your option) any later version. | ||
10 | * | ||
11 | * GPXView is distributed in the hope that it will be useful, | ||
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
14 | * GNU General Public License for more details. | ||
15 | * | ||
16 | * You should have received a copy of the GNU General Public License | ||
17 | * along with GPXView. If not, see <http://www.gnu.org/licenses/>. | ||
18 | */ | ||
19 | |||
20 | #include "gpxview.h" | ||
21 | #include "custom_size_renderer.h" | ||
22 | |||
23 | /* http://scentric.net/tutorial/sec-custom-cell-renderers.html */ | ||
24 | /* https://stage.maemo.org/svn/maemo/projects/haf/trunk/gtk+/gtk/gtkcellrendererpixbuf.c */ | ||
25 | /* https://stage.maemo.org/svn/maemo/projects/haf/trunk/gtk+/gtk/gtkcellrenderertext.c */ | ||
26 | |||
27 | /* This is based mainly on GtkCellRendererProgress | ||
28 | * in GAIM, written and (c) 2002 by Sean Egan | ||
29 | * (Licensed under the GPL), which in turn is | ||
30 | * based on Gtk's GtkCellRenderer[Text|Toggle|Pixbuf] | ||
31 | * implementation by Jonathan Blandford */ | ||
32 | |||
33 | /* Some boring function declarations: GObject type system stuff */ | ||
34 | |||
35 | static void custom_cell_renderer_size_init (CustomCellRendererSize *cellsize); | ||
36 | static void custom_cell_renderer_size_class_init (CustomCellRendererSizeClass *klass); | ||
37 | static void custom_cell_renderer_size_get_property (GObject *object, | ||
38 | guint param_id, | ||
39 | GValue *value, | ||
40 | GParamSpec *pspec); | ||
41 | static void custom_cell_renderer_size_set_property (GObject *object, | ||
42 | guint param_id, | ||
43 | const GValue *value, | ||
44 | GParamSpec *pspec); | ||
45 | static void custom_cell_renderer_size_finalize (GObject *gobject); | ||
46 | |||
47 | |||
48 | /* These functions are the heart of our custom cell renderer: */ | ||
49 | |||
50 | static void custom_cell_renderer_size_get_size (GtkCellRenderer *cell, | ||
51 | GtkWidget *widget, | ||
52 | GdkRectangle *cell_area, | ||
53 | gint *x_offset, | ||
54 | gint *y_offset, | ||
55 | gint *width, | ||
56 | gint *height); | ||
57 | |||
58 | static void custom_cell_renderer_size_render (GtkCellRenderer *cell, | ||
59 | GdkWindow *window, | ||
60 | GtkWidget *widget, | ||
61 | GdkRectangle *background_area, | ||
62 | GdkRectangle *cell_area, | ||
63 | GdkRectangle *expose_area, | ||
64 | guint flags); | ||
65 | |||
66 | |||
67 | enum { PROP_SIZE = 1, }; | ||
68 | |||
69 | static const char *size_str[] = { | ||
70 | "Regular", "Small", "Micro", "Other", "Not chosen", "Large", "Virtual" | ||
71 | }; | ||
72 | |||
73 | static gpointer parent_class; | ||
74 | |||
75 | GType custom_cell_renderer_size_get_type (void) { | ||
76 | static GType cell_size_type = 0; | ||
77 | |||
78 | if (cell_size_type == 0) | ||
79 | { | ||
80 | static const GTypeInfo cell_size_info = | ||
81 | { | ||
82 | sizeof (CustomCellRendererSizeClass), | ||
83 | NULL, /* base_init */ | ||
84 | NULL, /* base_finalize */ | ||
85 | (GClassInitFunc) custom_cell_renderer_size_class_init, | ||
86 | NULL, /* class_finalize */ | ||
87 | NULL, /* class_data */ | ||
88 | sizeof (CustomCellRendererSize), | ||
89 | 0, /* n_preallocs */ | ||
90 | (GInstanceInitFunc) custom_cell_renderer_size_init, | ||
91 | }; | ||
92 | |||
93 | /* Derive from GtkCellRenderer */ | ||
94 | cell_size_type = g_type_register_static (GTK_TYPE_CELL_RENDERER, | ||
95 | "CustomCellRendererSize", | ||
96 | &cell_size_info, | ||
97 | 0); | ||
98 | } | ||
99 | return cell_size_type; | ||
100 | } | ||
101 | |||
102 | |||
103 | /*************************************************************************** | ||
104 | * | ||
105 | * custom_cell_renderer_size_init: set some default properties of the | ||
106 | * parent (GtkCellRenderer). | ||
107 | * | ||
108 | ***************************************************************************/ | ||
109 | |||
110 | static void | ||
111 | custom_cell_renderer_size_init (CustomCellRendererSize *cellrenderersize) | ||
112 | { | ||
113 | GTK_CELL_RENDERER(cellrenderersize)->mode = GTK_CELL_RENDERER_MODE_INERT; | ||
114 | GTK_CELL_RENDERER(cellrenderersize)->xpad = 0; | ||
115 | GTK_CELL_RENDERER(cellrenderersize)->ypad = 0; | ||
116 | } | ||
117 | |||
118 | |||
119 | /*************************************************************************** | ||
120 | * | ||
121 | * custom_cell_renderer_size_class_init: | ||
122 | * | ||
123 | * set up our own get_property and set_property functions, and | ||
124 | * override the parent's functions that we need to implement. | ||
125 | * And make our new "size" property known to the type system. | ||
126 | * If you want cells that can be activated on their own (ie. not | ||
127 | * just the whole row selected) or cells that are editable, you | ||
128 | * will need to override 'activate' and 'start_editing' as well. | ||
129 | * | ||
130 | ***************************************************************************/ | ||
131 | |||
132 | static void | ||
133 | custom_cell_renderer_size_class_init (CustomCellRendererSizeClass *klass) { | ||
134 | GtkCellRendererClass *cell_class = GTK_CELL_RENDERER_CLASS(klass); | ||
135 | GObjectClass *object_class = G_OBJECT_CLASS(klass); | ||
136 | |||
137 | parent_class = g_type_class_peek_parent (klass); | ||
138 | object_class->finalize = custom_cell_renderer_size_finalize; | ||
139 | |||
140 | /* Hook up functions to set and get our | ||
141 | * custom cell renderer properties */ | ||
142 | object_class->get_property = custom_cell_renderer_size_get_property; | ||
143 | object_class->set_property = custom_cell_renderer_size_set_property; | ||
144 | |||
145 | /* Override the two crucial functions that are the heart | ||
146 | * of a cell renderer in the parent class */ | ||
147 | cell_class->get_size = custom_cell_renderer_size_get_size; | ||
148 | cell_class->render = custom_cell_renderer_size_render; | ||
149 | |||
150 | /* Install our very own properties */ | ||
151 | g_object_class_install_property (object_class, PROP_SIZE, | ||
152 | g_param_spec_int ("size", "Size", "Container size", -1, CACHE_CONT_MAX, 0, | ||
153 | G_PARAM_READWRITE)); | ||
154 | } | ||
155 | |||
156 | |||
157 | /*************************************************************************** | ||
158 | * | ||
159 | * custom_cell_renderer_size_finalize: free any resources here | ||
160 | * | ||
161 | ***************************************************************************/ | ||
162 | |||
163 | static void custom_cell_renderer_size_finalize (GObject *object) { | ||
164 | (* G_OBJECT_CLASS (parent_class)->finalize) (object); | ||
165 | } | ||
166 | |||
167 | |||
168 | /*************************************************************************** | ||
169 | * | ||
170 | * custom_cell_renderer_size_get_property: as it says | ||
171 | * | ||
172 | ***************************************************************************/ | ||
173 | |||
174 | static void | ||
175 | custom_cell_renderer_size_get_property (GObject *object, | ||
176 | guint param_id, | ||
177 | GValue *value, | ||
178 | GParamSpec *psec) { | ||
179 | CustomCellRendererSize *cellsize = CUSTOM_CELL_RENDERER_SIZE(object); | ||
180 | |||
181 | switch (param_id) { | ||
182 | case PROP_SIZE: | ||
183 | g_value_set_int(value, cellsize->size); | ||
184 | break; | ||
185 | |||
186 | default: | ||
187 | G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, psec); | ||
188 | break; | ||
189 | } | ||
190 | } | ||
191 | |||
192 | |||
193 | /*************************************************************************** | ||
194 | * | ||
195 | * custom_cell_renderer_size_set_property: as it says | ||
196 | * | ||
197 | ***************************************************************************/ | ||
198 | |||
199 | static void | ||
200 | custom_cell_renderer_size_set_property (GObject *object, | ||
201 | guint param_id, | ||
202 | const GValue *value, | ||
203 | GParamSpec *pspec) { | ||
204 | CustomCellRendererSize *cellsize = CUSTOM_CELL_RENDERER_SIZE (object); | ||
205 | |||
206 | switch (param_id) { | ||
207 | case PROP_SIZE: | ||
208 | cellsize->size = g_value_get_int(value); | ||
209 | break; | ||
210 | |||
211 | default: | ||
212 | G_OBJECT_WARN_INVALID_PROPERTY_ID(object, param_id, pspec); | ||
213 | break; | ||
214 | } | ||
215 | } | ||
216 | |||
217 | /*************************************************************************** | ||
218 | * | ||
219 | * custom_cell_renderer_size_new: return a new cell renderer instance | ||
220 | * | ||
221 | ***************************************************************************/ | ||
222 | |||
223 | GtkCellRenderer *custom_cell_renderer_size_new (void) { | ||
224 | return g_object_new(CUSTOM_TYPE_CELL_RENDERER_SIZE, NULL); | ||
225 | } | ||
226 | |||
227 | static PangoLayout *new_layout(GtkWidget *widget, const char *str) { | ||
228 | #ifndef USE_MAEMO | ||
229 | return gtk_widget_create_pango_layout(widget, str); | ||
230 | #else | ||
231 | #ifdef USE_PANNABLE_AREA | ||
232 | char *tmp = g_strdup_printf("<span size=\"x-small\">%s</span>", str); | ||
233 | #else | ||
234 | char *tmp = g_strdup_printf("<span size=\"xx-small\">%s</span>", str); | ||
235 | #endif | ||
236 | PangoLayout *layout = gtk_widget_create_pango_layout(widget, NULL); | ||
237 | pango_layout_set_markup(layout, tmp, strlen(tmp)); | ||
238 | g_free(tmp); | ||
239 | return layout; | ||
240 | #endif | ||
241 | } | ||
242 | |||
243 | static void | ||
244 | custom_cell_renderer_size_get_size (GtkCellRenderer *cell, | ||
245 | GtkWidget *widget, GdkRectangle *cell_area, gint *x_offset, | ||
246 | gint *y_offset, gint *width, gint *height) { | ||
247 | GdkPixbuf *pixbuf = NULL; | ||
248 | CustomCellRendererSize *cellsize = CUSTOM_CELL_RENDERER_SIZE (cell); | ||
249 | |||
250 | if(cellsize->size < 0) return; | ||
251 | |||
252 | pixbuf = icon_get(ICON_CACHE_SIZE, cellsize->size); | ||
253 | if (!pixbuf) return; | ||
254 | |||
255 | pixbuf = icon_get(ICON_CACHE_SIZE, cellsize->size); | ||
256 | gint calc_width = (gint) gdk_pixbuf_get_width(pixbuf); | ||
257 | gint calc_height = (gint) gdk_pixbuf_get_height(pixbuf); | ||
258 | |||
259 | /* do the text */ | ||
260 | PangoLayout *layout = new_layout(widget, size_str[cellsize->size]); | ||
261 | |||
262 | PangoRectangle rect; | ||
263 | pango_layout_get_pixel_extents(layout, NULL, &rect); | ||
264 | g_object_unref (layout); | ||
265 | |||
266 | calc_height += rect.height; | ||
267 | if(rect.width > calc_width) calc_width = rect.width; | ||
268 | |||
269 | // printf("req size = %d*%d\n", calc_width, calc_height); | ||
270 | |||
271 | if (x_offset) *x_offset = 0; | ||
272 | if (y_offset) *y_offset = 0; | ||
273 | |||
274 | if (cell_area) { | ||
275 | // printf("cell size = %d*%d\n", cell_area->width, cell_area->height); | ||
276 | |||
277 | if (x_offset) | ||
278 | *x_offset = (cell_area->width - calc_width)/2; | ||
279 | |||
280 | if (y_offset) | ||
281 | *y_offset = (cell_area->height - calc_height)/2; | ||
282 | } | ||
283 | |||
284 | if (width) *width = calc_width; | ||
285 | if (height) *height = calc_height; | ||
286 | } | ||
287 | |||
288 | |||
289 | /*************************************************************************** | ||
290 | * | ||
291 | * custom_cell_renderer_size_render: crucial - do the rendering. | ||
292 | * | ||
293 | ***************************************************************************/ | ||
294 | |||
295 | static void | ||
296 | custom_cell_renderer_size_render (GtkCellRenderer *cell, | ||
297 | GdkWindow *window, | ||
298 | GtkWidget *widget, | ||
299 | GdkRectangle *background_area, | ||
300 | GdkRectangle *cell_area, | ||
301 | GdkRectangle *expose_area, | ||
302 | guint flags) | ||
303 | { | ||
304 | CustomCellRendererSize *cellsize = CUSTOM_CELL_RENDERER_SIZE (cell); | ||
305 | GdkPixbuf *pixbuf = NULL; | ||
306 | GdkRectangle all_rect; | ||
307 | GdkRectangle draw_rect; | ||
308 | |||
309 | if(cellsize->size < 0) return; | ||
310 | |||
311 | pixbuf = icon_get(ICON_CACHE_SIZE, cellsize->size); | ||
312 | if (!pixbuf) return; | ||
313 | |||
314 | gint pix_width = gdk_pixbuf_get_width(pixbuf); | ||
315 | gint pix_height = gdk_pixbuf_get_height(pixbuf); | ||
316 | |||
317 | |||
318 | custom_cell_renderer_size_get_size (cell, widget, cell_area, | ||
319 | &all_rect.x, &all_rect.y, | ||
320 | &all_rect.width, &all_rect.height); | ||
321 | |||
322 | all_rect.x += cell_area->x; | ||
323 | all_rect.y += cell_area->y; | ||
324 | |||
325 | if (!gdk_rectangle_intersect (cell_area, &all_rect, &draw_rect) || | ||
326 | !gdk_rectangle_intersect (expose_area, &draw_rect, &draw_rect)) | ||
327 | return; | ||
328 | |||
329 | /* do the text */ | ||
330 | PangoLayout *layout = new_layout(widget, size_str[cellsize->size]); | ||
331 | PangoRectangle rect; | ||
332 | pango_layout_get_pixel_extents(layout, NULL, &rect); | ||
333 | // printf("cell width = %d, text width = %d\n", all_rect.width, rect.width); | ||
334 | |||
335 | int yoff = (all_rect.height - (rect.height + pix_height))/2; | ||
336 | |||
337 | gtk_paint_layout(widget->style, window, GTK_STATE_NORMAL, | ||
338 | TRUE, expose_area, widget, "cellrenderersize", | ||
339 | all_rect.x + (all_rect.width - rect.width)/2, | ||
340 | all_rect.y + yoff, | ||
341 | layout); | ||
342 | |||
343 | g_object_unref (layout); | ||
344 | |||
345 | /* draw the bitmap */ | ||
346 | cairo_t *cr = gdk_cairo_create(window); | ||
347 | gdk_cairo_set_source_pixbuf(cr, pixbuf, | ||
348 | all_rect.x + (all_rect.width - pix_width)/2, | ||
349 | all_rect.y + rect.height + yoff); | ||
350 | gdk_cairo_rectangle(cr, &draw_rect); | ||
351 | cairo_fill(cr); | ||
352 | cairo_destroy(cr); | ||
353 | } |