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comparison: ui/gtk/tree.c

ui/gtk/tree.c

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1 /*
2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
3 *
4 * Copyright 2017 Olaf Wintermann. All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 *
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 * POSSIBILITY OF SUCH DAMAGE.
27 */
28
29 #include <stdio.h>
30 #include <stdlib.h>
31 #include <string.h>
32 #include <stdarg.h>
33
34 #include "../common/context.h"
35 #include "../common/object.h"
36 #include "container.h"
37
38 #include "tree.h"
39
40
41 void* ui_strmodel_getvalue(void *elm, int column) {
42 return column == 0 ? elm : NULL;
43 }
44
45
46 UIWIDGET ui_listview_str(UiObject *obj, UiList *list, ui_callback f, void *udata) {
47 return ui_listview(obj, list, ui_strmodel_getvalue, f, udata);
48 }
49
50 UIWIDGET ui_listview_var(UiObject *obj, UiVar *var, ui_getvaluefunc getvalue, ui_callback f, void *udata) {
51 // create treeview
52 GtkWidget *view = gtk_tree_view_new();
53 GtkCellRenderer *renderer = gtk_cell_renderer_text_new();
54 GtkTreeViewColumn *column = gtk_tree_view_column_new_with_attributes(NULL, renderer, "text", 0, NULL);
55 gtk_tree_view_append_column(GTK_TREE_VIEW(view), column);
56
57 gtk_tree_view_set_headers_visible(GTK_TREE_VIEW(view), FALSE);
58 #ifdef UI_GTK3
59 #if GTK_MINOR_VERSION >= 8
60 gtk_tree_view_set_activate_on_single_click(GTK_TREE_VIEW(view), TRUE);
61 #else
62 // TODO: implement for older gtk3
63 #endif
64 #else
65 // TODO: implement for gtk2
66 #endif
67
68 UiModel *model = ui_model(obj->ctx, UI_STRING, "", -1);
69 model->getvalue = getvalue;
70 UiList *list = var->value;
71 UiListModel *listmodel = ui_list_model_new(obj, var, model);
72 gtk_tree_view_set_model(GTK_TREE_VIEW(view), GTK_TREE_MODEL(listmodel));
73
74 UiListView *listview = malloc(sizeof(UiListView));
75 listview->obj = obj;
76 listview->widget = view;
77 listview->var = var;
78 listview->model = model;
79 g_signal_connect(
80 view,
81 "destroy",
82 G_CALLBACK(ui_listview_destroy),
83 listview);
84
85 // bind var
86 list->update = ui_listview_update;
87 list->obj = listview;
88
89 // add callback
90 if(f) {
91 UiTreeEventData *event = ui_malloc(obj->ctx, sizeof(UiTreeEventData));
92 event->obj = obj;
93 event->userdata = udata;
94 event->activate = f;
95 event->selection = NULL;
96
97 g_signal_connect(
98 view,
99 "row-activated",
100 G_CALLBACK(ui_listview_activate_event),
101 event);
102 }
103
104 // add widget to the current container
105 GtkWidget *scroll_area = gtk_scrolled_window_new(NULL, NULL);
106 gtk_scrolled_window_set_policy(
107 GTK_SCROLLED_WINDOW(scroll_area),
108 GTK_POLICY_AUTOMATIC,
109 GTK_POLICY_AUTOMATIC); // GTK_POLICY_ALWAYS
110 gtk_container_add(GTK_CONTAINER(scroll_area), view);
111
112 UiContainer *ct = uic_get_current_container(obj);
113 ct->add(ct, scroll_area, TRUE);
114
115 // ct->current should point to view, not scroll_area, to make it possible
116 // to add a context menu
117 ct->current = view;
118
119 return scroll_area;
120 }
121
122 UIWIDGET ui_listview(UiObject *obj, UiList *list, ui_getvaluefunc getvalue, ui_callback f, void *udata) {
123 UiVar *var = malloc(sizeof(UiVar));
124 var->value = list;
125 var->type = UI_VAR_SPECIAL;
126 return ui_listview_var(obj, var, getvalue, f, udata);
127 }
128
129 UIWIDGET ui_listview_nv(UiObject *obj, char *varname, ui_getvaluefunc getvalue, ui_callback f, void *udata) {
130 UiVar *var = uic_create_var(obj->ctx, varname, UI_VAR_LIST);
131 if(var) {
132 return ui_listview_var(obj, var, getvalue, f, udata);
133 } else {
134 // TODO: error
135 }
136 return NULL;
137 }
138
139 static void drag_begin(GtkWidget *widget, GdkDragContext *context, gpointer udata) {
140 printf("drag begin\n");
141
142 }
143
144 static void drag_end(
145 GtkWidget *widget,
146 GdkDragContext *context,
147 guint time,
148 gpointer udata)
149 {
150 printf("drag end\n");
151
152 }
153
154 static GtkTargetEntry targetentries[] =
155 {
156 { "STRING", 0, 0 },
157 { "text/plain", 0, 1 },
158 { "text/uri-list", 0, 2 },
159 };
160
161 UIWIDGET ui_table_var(UiObject *obj, UiVar *var, UiModel *model, UiListCallbacks cb) {
162 // create treeview
163 GtkWidget *view = gtk_tree_view_new();
164
165 int addi = 0;
166 for(int i=0;i<model->columns;i++) {
167 GtkTreeViewColumn *column = NULL;
168 if(model->types[i] == UI_ICON_TEXT) {
169 column = gtk_tree_view_column_new();
170 gtk_tree_view_column_set_title(column, model->titles[i]);
171
172 GtkCellRenderer *iconrenderer = gtk_cell_renderer_pixbuf_new();
173 GtkCellRenderer *textrenderer = gtk_cell_renderer_text_new();
174
175 gtk_tree_view_column_pack_end(column, textrenderer, TRUE);
176 gtk_tree_view_column_pack_start(column, iconrenderer, FALSE);
177
178
179 gtk_tree_view_column_add_attribute(column, iconrenderer, "pixbuf", i);
180 gtk_tree_view_column_add_attribute(column, textrenderer, "text", i+1);
181
182 addi++;
183 } else {
184 GtkCellRenderer *renderer = gtk_cell_renderer_text_new();
185 column = gtk_tree_view_column_new_with_attributes(
186 model->titles[i],
187 renderer,
188 "text",
189 i + addi,
190 NULL);
191 }
192 gtk_tree_view_column_set_resizable(column, TRUE);
193 gtk_tree_view_append_column(GTK_TREE_VIEW(view), column);
194 }
195
196 //gtk_tree_view_set_headers_visible(GTK_TREE_VIEW(view), FALSE);
197 #ifdef UI_GTK3
198 //gtk_tree_view_set_activate_on_single_click(GTK_TREE_VIEW(view), TRUE);
199 #else
200
201 #endif
202
203 UiList *list = var->value;
204 UiListModel *listmodel = ui_list_model_new(obj, var, model);
205 gtk_tree_view_set_model(GTK_TREE_VIEW(view), GTK_TREE_MODEL(listmodel));
206
207 //g_signal_connect(view, "drag-begin", G_CALLBACK(drag_begin), NULL);
208 //g_signal_connect(view, "drag-end", G_CALLBACK(drag_end), NULL);
209
210 // add TreeView as observer to the UiList to update the TreeView if the
211 // data changes
212 UiListView *tableview = malloc(sizeof(UiListView));
213 tableview->obj = obj;
214 tableview->widget = view;
215 tableview->var = var;
216 tableview->model = model;
217 g_signal_connect(
218 view,
219 "destroy",
220 G_CALLBACK(ui_listview_destroy),
221 tableview);
222
223 // bind var
224 list->update = ui_listview_update;
225 list->obj = tableview;
226
227 // add callback
228 UiTreeEventData *event = ui_malloc(obj->ctx, sizeof(UiTreeEventData));
229 event->obj = obj;
230 event->activate = cb.activate;
231 event->selection = cb.selection;
232 event->userdata = cb.userdata;
233 if(cb.activate) {
234 g_signal_connect(
235 view,
236 "row-activated",
237 G_CALLBACK(ui_listview_activate_event),
238 event);
239 }
240 if(cb.selection) {
241 GtkTreeSelection *selection = gtk_tree_view_get_selection(
242 GTK_TREE_VIEW(view));
243 g_signal_connect(
244 selection,
245 "changed",
246 G_CALLBACK(ui_listview_selection_event),
247 event);
248 }
249 // TODO: destroy callback
250
251
252 GtkTreeSelection *selection = gtk_tree_view_get_selection (GTK_TREE_VIEW(view));
253 gtk_tree_selection_set_mode(selection, GTK_SELECTION_MULTIPLE);
254
255 // add widget to the current container
256 GtkWidget *scroll_area = gtk_scrolled_window_new(NULL, NULL);
257 gtk_scrolled_window_set_policy(
258 GTK_SCROLLED_WINDOW(scroll_area),
259 GTK_POLICY_AUTOMATIC,
260 GTK_POLICY_AUTOMATIC); // GTK_POLICY_ALWAYS
261 gtk_container_add(GTK_CONTAINER(scroll_area), view);
262
263 UiContainer *ct = uic_get_current_container(obj);
264 ct->add(ct, scroll_area, TRUE);
265
266 // ct->current should point to view, not scroll_area, to make it possible
267 // to add a context menu
268 ct->current = view;
269
270 return scroll_area;
271 }
272
273 UIWIDGET ui_table(UiObject *obj, UiList *list, UiModel *model, UiListCallbacks cb) {
274 UiVar *var = malloc(sizeof(UiVar));
275 var->value = list;
276 var->type = UI_VAR_SPECIAL;
277 return ui_table_var(obj, var, model, cb);
278 }
279
280 UIWIDGET ui_table_nv(UiObject *obj, char *varname, UiModel *model, UiListCallbacks cb) {
281 UiVar *var = uic_create_var(obj->ctx, varname, UI_VAR_LIST);
282 if(var) {
283 return ui_table_var(obj, var, model, cb);
284 } else {
285 // TODO: error
286 }
287 return NULL;
288 }
289
290 GtkWidget* ui_get_tree_widget(UIWIDGET widget) {
291 GList *c = gtk_container_get_children(GTK_CONTAINER(widget));
292 if(c) {
293 return c->data;
294 }
295 return NULL;
296 }
297
298 static char** targets2array(char *target0, va_list ap, int *nelm) {
299 int al = 16;
300 char **targets = calloc(16, sizeof(char*));
301 targets[0] = target0;
302
303 int i = 1;
304 char *target;
305 while((target = va_arg(ap, char*)) != NULL) {
306 if(i >= al) {
307 al *= 2;
308 targets = realloc(targets, al*sizeof(char*));
309 }
310 targets[i] = target;
311 i++;
312 }
313
314 *nelm = i;
315 return targets;
316 }
317
318 static GtkTargetEntry* targetstr2gtktargets(char **str, int nelm) {
319 GtkTargetEntry *targets = calloc(nelm, sizeof(GtkTargetEntry));
320 for(int i=0;i<nelm;i++) {
321 targets[i].target = str[i];
322 }
323 return targets;
324 }
325
326 void ui_table_dragsource(UIWIDGET tablewidget, int actions, char *target0, ...) {
327 va_list ap;
328 va_start(ap, target0);
329 int nelm;
330 char **targets = targets2array(target0, ap, &nelm);
331 va_end(ap);
332 ui_table_dragsource_a(tablewidget, actions, targets, nelm);
333 free(targets);
334 }
335
336 void ui_table_dragsource_a(UIWIDGET tablewidget, int actions, char **targets, int nelm) {
337 GtkTargetEntry* t = targetstr2gtktargets(targets, nelm);
338 gtk_tree_view_enable_model_drag_source(
339 GTK_TREE_VIEW(ui_get_tree_widget(tablewidget)),
340 GDK_BUTTON1_MASK,
341 t,
342 nelm,
343 GDK_ACTION_COPY|GDK_ACTION_MOVE|GDK_ACTION_LINK);
344 free(t);
345 }
346
347 void ui_table_dragdest(UIWIDGET tablewidget, int actions, char *target0, ...) {
348 va_list ap;
349 va_start(ap, target0);
350 int nelm;
351 char **targets = targets2array(target0, ap, &nelm);
352 va_end(ap);
353 ui_table_dragdest_a(tablewidget, actions, targets, nelm);
354 free(targets);
355 }
356
357 void ui_table_dragdest_a(UIWIDGET tablewidget, int actions, char **targets, int nelm) {
358 GtkTargetEntry* t = targetstr2gtktargets(targets, nelm);
359 gtk_tree_view_enable_model_drag_dest(
360 GTK_TREE_VIEW(ui_get_tree_widget(tablewidget)),
361 t,
362 nelm,
363 GDK_ACTION_COPY|GDK_ACTION_MOVE|GDK_ACTION_LINK);
364 free(t);
365 }
366
367 void ui_listview_update(UiList *list, int i) {
368 UiListView *view = list->obj;
369 UiListModel *model = ui_list_model_new(view->obj, view->var, view->model);
370 gtk_tree_view_set_model(GTK_TREE_VIEW(view->widget), GTK_TREE_MODEL(model));
371 g_object_unref(G_OBJECT(model));
372 // TODO: free old model
373 }
374
375 void ui_listview_destroy(GtkWidget *w, UiListView *v) {
376 gtk_tree_view_set_model(GTK_TREE_VIEW(w), NULL);
377 ui_destroy_boundvar(v->obj->ctx, v->var);
378 // TODO: destroy model?
379 free(v);
380 }
381
382 void ui_combobox_destroy(GtkWidget *w, UiListView *v) {
383 gtk_combo_box_set_model(GTK_COMBO_BOX(w), NULL);
384 ui_destroy_boundvar(v->obj->ctx, v->var);
385 // TODO: destroy model?
386 free(v);
387 }
388
389
390 void ui_listview_activate_event(
391 GtkTreeView *treeview,
392 GtkTreePath *path,
393 GtkTreeViewColumn *column,
394 UiTreeEventData *event)
395 {
396 UiListSelection *selection = ui_listview_selection(
397 gtk_tree_view_get_selection(treeview),
398 event);
399
400 UiEvent e;
401 e.obj = event->obj;
402 e.window = event->obj->window;
403 e.document = event->obj->ctx->document;
404 e.eventdata = selection;
405 e.intval = selection->count > 0 ? selection->rows[0] : -1;
406 event->activate(&e, event->userdata);
407
408 if(selection->count > 0) {
409 free(selection->rows);
410 }
411 free(selection);
412 }
413
414 void ui_listview_selection_event(
415 GtkTreeSelection *treeselection,
416 UiTreeEventData *event)
417 {
418 UiListSelection *selection = ui_listview_selection(treeselection, event);
419
420 UiEvent e;
421 e.obj = event->obj;
422 e.window = event->obj->window;
423 e.document = event->obj->ctx->document;
424 e.eventdata = selection;
425 e.intval = selection->count > 0 ? selection->rows[0] : -1;
426 event->selection(&e, event->userdata);
427
428 if(selection->count > 0) {
429 free(selection->rows);
430 }
431 free(selection);
432 }
433
434 UiListSelection* ui_listview_selection(
435 GtkTreeSelection *selection,
436 UiTreeEventData *event)
437 {
438 GList *rows = gtk_tree_selection_get_selected_rows(selection, NULL);
439
440 UiListSelection *ls = malloc(sizeof(UiListSelection));
441 ls->count = g_list_length(rows);
442 ls->rows = calloc(ls->count, sizeof(int));
443 GList *r = rows;
444 int i = 0;
445 while(r) {
446 GtkTreePath *path = r->data;
447 ls->rows[i] = ui_tree_path_list_index(path);
448 r = r->next;
449 i++;
450 }
451 return ls;
452 }
453
454 int ui_tree_path_list_index(GtkTreePath *path) {
455 int depth = gtk_tree_path_get_depth(path);
456 if(depth == 0) {
457 fprintf(stderr, "UiError: treeview selection: depth == 0\n");
458 return -1;
459 }
460 int *indices = gtk_tree_path_get_indices(path);
461 return indices[depth - 1];
462 }
463
464
465 /* --------------------------- ComboBox --------------------------- */
466
467 UIWIDGET ui_combobox_str(UiObject *obj, UiList *list, ui_callback f, void *udata) {
468 return ui_combobox(obj, list, ui_strmodel_getvalue, f, udata);
469 }
470
471 UIWIDGET ui_combobox(UiObject *obj, UiList *list, ui_getvaluefunc getvalue, ui_callback f, void *udata) {
472 UiVar *var = malloc(sizeof(UiVar));
473 var->value = list;
474 var->type = UI_VAR_SPECIAL;
475 return ui_combobox_var(obj, var, getvalue, f, udata);
476 }
477
478 UIWIDGET ui_combobox_nv(UiObject *obj, char *varname, ui_getvaluefunc getvalue, ui_callback f, void *udata) {
479 UiVar *var = uic_create_var(obj->ctx, varname, UI_VAR_LIST);
480 if(var) {
481 return ui_combobox_var(obj, var, getvalue, f, udata);
482 } else {
483 // TODO: error
484 }
485 return NULL;
486 }
487
488 UIWIDGET ui_combobox_var(UiObject *obj, UiVar *var, ui_getvaluefunc getvalue, ui_callback f, void *udata) {
489 UiModel *model = ui_model(obj->ctx, UI_STRING, "", -1);
490 model->getvalue = getvalue;
491 UiListModel *listmodel = ui_list_model_new(obj, var, model);
492
493 GtkWidget *combobox = ui_create_combobox(obj, listmodel, f, udata);
494 UiContainer *ct = uic_get_current_container(obj);
495 ct->add(ct, combobox, FALSE);
496 return combobox;
497 }
498
499 GtkWidget* ui_create_combobox(UiObject *obj, UiListModel *model, ui_callback f, void *udata) {
500 GtkWidget *combobox = gtk_combo_box_new_with_model(GTK_TREE_MODEL(model));
501
502 UiListView *uicbox = malloc(sizeof(UiListView));
503 uicbox->obj = obj;
504 uicbox->widget = combobox;
505 uicbox->var = model->var;
506 uicbox->model = model->model;
507
508 g_signal_connect(
509 combobox,
510 "destroy",
511 G_CALLBACK(ui_combobox_destroy),
512 uicbox);
513
514 // bind var
515 UiList *list = model->var->value;
516 list->update = ui_combobox_modelupdate;
517 list->obj = uicbox;
518
519 GtkCellRenderer *renderer = gtk_cell_renderer_text_new();
520 gtk_cell_layout_pack_start(GTK_CELL_LAYOUT(combobox), renderer, TRUE);
521 gtk_cell_layout_set_attributes(
522 GTK_CELL_LAYOUT(combobox),
523 renderer,
524 "text",
525 0,
526 NULL);
527 gtk_combo_box_set_active(GTK_COMBO_BOX(combobox), 0);
528
529 // add callback
530 if(f) {
531 UiEventData *event = ui_malloc(obj->ctx, sizeof(UiEventData));
532 event->obj = obj;
533 event->userdata = udata;
534 event->callback = f;
535 event->value = 0;
536
537 g_signal_connect(
538 combobox,
539 "changed",
540 G_CALLBACK(ui_combobox_change_event),
541 event);
542 }
543
544 return combobox;
545 }
546
547 void ui_combobox_change_event(GtkComboBox *widget, UiEventData *e) {
548 UiEvent event;
549 event.obj = e->obj;
550 event.window = event.obj->window;
551 event.document = event.obj->ctx->document;
552 event.eventdata = NULL;
553 event.intval = gtk_combo_box_get_active(widget);
554 e->callback(&event, e->userdata);
555 }
556
557 void ui_combobox_modelupdate(UiList *list, int i) {
558 UiListView *view = list->obj;
559 UiListModel *model = ui_list_model_new(view->obj, view->var, view->model);
560 gtk_combo_box_set_model(GTK_COMBO_BOX(view->widget), GTK_TREE_MODEL(model));
561 }
562

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