--- /dev/null
+/**
+ * Ecore example illustrating how to use ecore imf.
+ *
+ * @verbatim
+ * gcc -o ecore_imf_example ecore_imf_example.c `pkg-config --cflags --libs ecore evas ecore-evas ecore-imf ecore-imf-evas`
+ * @endverbatim
+ */
+
+#include <Ecore.h>
+#include <Ecore_Evas.h>
+#include <Ecore_IMF.h>
+#include <Ecore_IMF_Evas.h>
+#include <Evas.h>
+#include <stdio.h>
+
+typedef struct _Entry Entry;
+
+struct _Entry
+{
+ Evas_Object *rect;
+ Evas_Object *txt_obj;
+ Evas_Textblock_Style *txt_style;
+ Evas_Textblock_Cursor *cursor;
+ Evas_Textblock_Cursor *preedit_start;
+ Evas_Textblock_Cursor *preedit_end;
+ Ecore_IMF_Context *imf_context;
+ Eina_Bool have_preedit : 1;
+};
+
+static void _mouse_up_cb(void *data, Evas *e, Evas_Object *o, void *event_info)
+{
+ Entry *en = data;
+ if (!en) return;
+
+ evas_object_focus_set(en->rect, EINA_TRUE);
+}
+
+static void _entry_focus_in_cb(void *data, Evas *e, Evas_Object *obj, void *event_info)
+{
+ Entry *en = data;
+ if (!en) return;
+
+ if (en->imf_context)
+ ecore_imf_context_focus_in(en->imf_context);
+}
+
+static void _entry_focus_out_cb(void *data, Evas *e, Evas_Object *obj, void *event_info)
+{
+ Entry *en = data;
+ if (!en) return;
+
+ if (en->imf_context)
+ {
+ ecore_imf_context_reset(en->imf_context);
+ ecore_imf_context_focus_out(en->imf_context);
+ }
+}
+
+static void
+_canvas_focus_in_cb(void *data, Evas *e, void *event_info)
+{
+ Evas_Object *obj = evas_focus_get(e);
+ if (obj)
+ _entry_focus_in_cb(obj, NULL, NULL, NULL);
+}
+
+static void
+_canvas_focus_out_cb(void *data, Evas *e, void *event_info)
+{
+ Evas_Object *obj = evas_focus_get(e);
+ if (obj)
+ _entry_focus_out_cb(obj, NULL, NULL, NULL);
+}
+
+static void
+_imf_cursor_info_set(Entry *en)
+{
+ Evas_Coord x, y, w, h;
+ Evas_Coord cx, cy, cw, ch; // cursor geometry
+ int cursor_pos; // cursor position in chars (Not bytes)
+
+ if (!en) return;
+
+ // Get cursor geometry
+ evas_object_geometry_get(en->txt_obj, &x, &y, &w, &h);
+ evas_textblock_cursor_geometry_get(en->cursor, &cx, &cy, &cw, &ch, NULL, EVAS_TEXTBLOCK_CURSOR_BEFORE);
+
+ // Get cursor position
+ cursor_pos = evas_textblock_cursor_pos_get(en->cursor);
+
+ ecore_imf_context_cursor_position_set(en->imf_context, cursor_pos);
+ ecore_imf_context_cursor_location_set(en->imf_context, x+cx, y+cy, cw, ch);
+}
+
+static void _preedit_del(Entry *en)
+{
+ if (!en || !en->have_preedit) return;
+ if (!en->preedit_start || !en->preedit_end) return;
+ if (!evas_textblock_cursor_compare(en->preedit_start, en->preedit_end)) return;
+
+ /* delete the preedit characters */
+ evas_textblock_cursor_range_delete(en->preedit_start, en->preedit_end);
+}
+
+static void
+_preedit_clear(Entry *en)
+{
+ if (en->preedit_start)
+ {
+ evas_textblock_cursor_free(en->preedit_start);
+ en->preedit_start = NULL;
+ }
+
+ if (en->preedit_end)
+ {
+ evas_textblock_cursor_free(en->preedit_end);
+ en->preedit_end = NULL;
+ }
+
+ en->have_preedit = EINA_FALSE;
+}
+
+static Eina_Bool
+_ecore_imf_retrieve_surrounding_cb(void *data, Ecore_IMF_Context *ctx, char **text, int *cursor_pos)
+{
+ /* This callback will be called when the Input Method Context module requests the surrounding context. */
+ Entry *en = data;
+ const char *str;
+
+ if (!en) return;
+
+ str = evas_object_textblock_text_markup_get(en->txt_obj);
+ *text = str ? strdup(str) : strdup("");
+
+ /* Get the current position of cursor */
+ if (cursor_pos)
+ *cursor_pos = evas_textblock_cursor_pos_get(en->cursor);
+
+ return EINA_TRUE;
+}
+
+static void
+_ecore_imf_event_delete_surrounding_cb(void *data, Ecore_IMF_Context *ctx, void *event_info)
+{
+ /* called when the input method needs to delete all or part of the context surrounding the cursor */
+ Entry *en = data;
+ Ecore_IMF_Event_Delete_Surrounding *ev = event_info;
+ Evas_Textblock_Cursor *del_start, *del_end;
+ int cursor_pos;
+
+ if (!en) return;
+
+ cursor_pos = evas_textblock_cursor_pos_get(en->cursor);
+
+ del_start = evas_object_textblock_cursor_new(en->txt_obj);
+ evas_textblock_cursor_pos_set(del_start, cursor_pos + ev->offset);
+
+ del_end = evas_object_textblock_cursor_new(en->txt_obj);
+ evas_textblock_cursor_pos_set(del_end, cursor_pos + ev->offset + ev->n_chars);
+
+ /* implement function to delete character(s) from 'cursor_pos+ev->offset' cursor position to 'cursor_pos + ev->offset + ev->n_chars' */
+ evas_textblock_cursor_range_delete(del_start, del_end);
+
+ evas_textblock_cursor_free(del_start);
+ evas_textblock_cursor_free(del_end);
+}
+
+static void _ecore_imf_event_commit_cb (void *data, Ecore_IMF_Context *ctx, void *event_info)
+{
+ Entry *en = data;
+ char *commit_str = (char *)event_info;
+ if (!en) return;
+
+ /* Delete preedit string */
+ _preedit_del(en);
+ _preedit_clear(en);
+
+ printf ("commit string : %s\n", commit_str);
+
+ evas_object_textblock_text_markup_prepend(en->cursor, commit_str);
+
+ /* Notify cursor information */
+ _imf_cursor_info_set(en);
+
+ return;
+}
+
+static void _ecore_imf_event_preedit_changed_cb(void *data, Ecore_IMF_Context *ctx, void *event_info)
+{
+ /* example how to get preedit string */
+ Entry *en = data;
+ char *preedit_string;
+ int cursor_pos;
+ Eina_List *attrs = NULL;
+ Eina_List *l;
+ Ecore_IMF_Preedit_Attr *attr;
+ Ecore_IMF_Context * imf_context = ctx;
+ int preedit_start_pos, preedit_end_pos;
+ int i;
+ Eina_Bool preedit_end_state = EINA_FALSE;
+
+ if (!en) return;
+
+ /* Get preedit string, attributes */
+ ecore_imf_context_preedit_string_with_attributes_get(imf_context, &preedit_string, &attrs, &cursor_pos);
+ printf("preedit string : %s\n", preedit_string);
+
+ if (!strcmp(preedit_string, ""))
+ preedit_end_state = EINA_TRUE;
+
+ /* delete preedit */
+ _preedit_del(en);
+
+ preedit_start_pos = evas_textblock_cursor_pos_get(en->cursor);
+
+ /* insert preedit character(s) */
+ if (strlen(preedit_string) > 0)
+ {
+ if (attrs)
+ {
+ EINA_LIST_FOREACH(attrs, l, attr)
+ {
+ if (attr->preedit_type == ECORE_IMF_PREEDIT_TYPE_SUB1) // style type
+ {
+ /* apply appropriate style such as underline */
+ }
+ else if (attr->preedit_type == ECORE_IMF_PREEDIT_TYPE_SUB2 || attr->preedit_type == ECORE_IMF_PREEDIT_TYPE_SUB3)
+ {
+ /* apply appropriate style such as underline */
+ }
+ }
+
+ /* insert code to display preedit string in your editor */
+ evas_object_textblock_text_markup_prepend(en->cursor, preedit_string);
+ }
+ }
+
+ if (!preedit_end_state)
+ {
+ /* set preedit start cursor */
+ if (!en->preedit_start)
+ en->preedit_start = evas_object_textblock_cursor_new(en->txt_obj);
+ evas_textblock_cursor_copy(en->cursor, en->preedit_start);
+
+ /* set preedit end cursor */
+ if (!en->preedit_end)
+ en->preedit_end = evas_object_textblock_cursor_new(en->txt_obj);
+ evas_textblock_cursor_copy(en->cursor, en->preedit_end);
+
+ preedit_end_pos = evas_textblock_cursor_pos_get(en->cursor);
+
+ for (i = 0; i < (preedit_end_pos - preedit_start_pos); i++)
+ {
+ evas_textblock_cursor_char_prev(en->preedit_start);
+ }
+
+ en->have_preedit = EINA_TRUE;
+
+ /* set cursor position */
+ evas_textblock_cursor_pos_set(en->cursor, preedit_start_pos + cursor_pos);
+ }
+
+ /* Notify cursor information */
+ _imf_cursor_info_set(en);
+
+ EINA_LIST_FREE(attrs, attr) free(attr);
+
+ free(preedit_string);
+}
+
+static void
+_key_down_cb(void *data, Evas *e, Evas_Object *obj, void *event_info)
+{
+ Entry *en = data;
+ Evas_Event_Key_Down *ev = event_info;
+ Eina_Bool control, alt, shift;
+ Eina_Bool multiline;
+ Eina_Bool cursor_changed;
+ if (!en) return;
+ if (!ev->key) return;
+
+ if (en->imf_context)
+ {
+ Ecore_IMF_Event_Key_Down ecore_ev;
+ ecore_imf_evas_event_key_down_wrap(ev, &ecore_ev);
+ if (ecore_imf_context_filter_event(en->imf_context,
+ ECORE_IMF_EVENT_KEY_DOWN,
+ (Ecore_IMF_Event *)&ecore_ev))
+ return;
+ }
+
+ control = evas_key_modifier_is_set(ev->modifiers, "Control");
+ alt = evas_key_modifier_is_set(ev->modifiers, "Alt");
+ shift = evas_key_modifier_is_set(ev->modifiers, "Shift");
+
+ if ((!strcmp(ev->keyname, "Escape")) ||
+ (!strcmp(ev->keyname, "Return")) || (!strcmp(ev->keyname, "KP_Enter")))
+ ecore_imf_context_reset(en->imf_context);
+
+ if (!strcmp(ev->key, "Escape"))
+ {
+ // dead keys here. Escape for now (should emit these)
+ ev->event_flags |= EVAS_EVENT_FLAG_ON_HOLD;
+ }
+ else if (!strcmp(ev->key, "Up") || !strcmp(ev->key, "KP_Up"))
+ {
+ // FILLME
+ }
+ else if (!strcmp(ev->key, "Down") || !strcmp(ev->key, "KP_Down"))
+ {
+ // FILLME
+ }
+ else if (!strcmp(ev->key, "Left") || !strcmp(ev->key, "KP_Left"))
+ {
+ // FILLME
+ }
+ else if (!strcmp(ev->key, "Right") || !strcmp(ev->key, "KP_Right"))
+ {
+ // FILLME
+ }
+ else if (!strcmp(ev->key, "BackSpace"))
+ {
+ if (evas_textblock_cursor_char_prev(en->cursor))
+ evas_textblock_cursor_char_delete(en->cursor);
+
+ return;
+ }
+ else if (!strcmp(ev->key, "Delete") || !strcmp(ev->key, "KP_Delete"))
+ {
+ // FILLME
+ }
+ else if (!strcmp(ev->key, "Home") || !strcmp(ev->key, "KP_Home"))
+ {
+ // FILLME
+ }
+ else if (!strcmp(ev->key, "End") || !strcmp(ev->key, "KP_End"))
+ {
+ // FILLME
+ }
+ else if ((control) && (!strcmp(ev->key, "v")))
+ {
+ // ctrl + v
+ // FILLME
+ }
+ else if ((control) && (!strcmp(ev->key, "a")))
+ {
+ // ctrl + a
+ // FILLME
+ }
+ else if ((control) && (!strcmp(ev->key, "A")))
+ {
+ // ctrl + A
+ // FILLME
+ }
+ else if ((control) && ((!strcmp(ev->key, "c") || (!strcmp(ev->key, "Insert")))))
+ {
+ // ctrl + c
+ // FILLME
+ }
+ else if ((control) && ((!strcmp(ev->key, "x") || (!strcmp(ev->key, "m")))))
+ {
+ // ctrl + x
+ }
+ else if ((control) && (!strcmp(ev->key, "z")))
+ {
+ // ctrl + z (undo)
+ // FILLME
+ }
+ else if ((control) && (!strcmp(ev->key, "y")))
+ {
+
+ // ctrl + y (redo)
+ // FILLME
+ }
+ else if (!strcmp(ev->key, "Tab"))
+ {
+ // FILLME
+ }
+ else if ((!strcmp(ev->key, "ISO_Left_Tab")) && (multiline))
+ {
+ // remove a tab
+ }
+ else if (!strcmp(ev->key, "Prior") || !strcmp(ev->key, "KP_Prior"))
+ {
+ // FILLME
+ }
+ else if (!strcmp(ev->key, "Next") || !strcmp(ev->key, "KP_Next"))
+ {
+ // FILLME
+ }
+ else if ((!strcmp(ev->key, "Return")) || (!strcmp(ev->key, "KP_Enter")))
+ {
+ // FILLME
+ }
+ else
+ {
+ if (ev->string) {
+ printf("key down string : %s\n", ev->string);
+ evas_object_textblock_text_markup_prepend(en->cursor, ev->string);
+ }
+ }
+
+ /* Notify cursor information */
+ _imf_cursor_info_set(en);
+}
+
+static void
+_key_up_cb(void *data, Evas *e, Evas_Object *obj, void *event_info)
+{
+ Entry *en = data;
+ Evas_Event_Key_Up *ev = event_info;
+
+ if (!en) return;
+
+ if (en->imf_context)
+ {
+ Ecore_IMF_Event_Key_Up ecore_ev;
+
+ ecore_imf_evas_event_key_up_wrap(ev, &ecore_ev);
+ if (ecore_imf_context_filter_event(en->imf_context,
+ ECORE_IMF_EVENT_KEY_UP,
+ (Ecore_IMF_Event *)&ecore_ev))
+ return;
+ }
+}
+
+static void
+create_input_field(Evas *evas, Entry *en, Evas_Coord x, Evas_Coord y, Evas_Coord w, Evas_Coord h)
+{
+ if (!en) return;
+
+ /* Create background for text input field */
+ en->rect = evas_object_rectangle_add(evas);
+ evas_object_size_hint_weight_set(en->rect, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
+ evas_object_color_set(en->rect, 150, 150, 150, 255); /* gray */
+ evas_object_move(en->rect, x, y);
+ evas_object_resize(en->rect, w, h);
+ evas_object_show(en->rect);
+
+ /* Create text object for displaying text */
+ en->txt_obj = evas_object_textblock_add(evas);
+ evas_object_color_set(en->txt_obj, 0, 0, 0, 255);
+ evas_object_pass_events_set(en->txt_obj, EINA_TRUE);
+ evas_object_move(en->txt_obj, x, y);
+ evas_object_resize(en->txt_obj, w, h);
+ evas_object_show(en->txt_obj);
+
+ /* Set style on textblock */
+ static const char *style_buf =
+ "DEFAULT='font=Sans font_size=30 color=#000 text_class=entry'"
+ "newline='br'"
+ "b='+ font=Sans:style=bold'";
+ en->txt_style = evas_textblock_style_new();
+ evas_textblock_style_set(en->txt_style, style_buf);
+ evas_object_textblock_style_set(en->txt_obj, en->txt_style);
+
+ /* Create cursor */
+ en->cursor = evas_object_textblock_cursor_new(en->txt_obj);
+
+ /* Create input context */
+ const char* defaultContextID = ecore_imf_context_default_id_get();
+ if (!defaultContextID)
+ return;
+
+ en->imf_context = ecore_imf_context_add(defaultContextID);
+ ecore_imf_context_client_window_set(en->imf_context, (void *)ecore_evas_window_get(ecore_evas_ecore_evas_get(evas)));
+ ecore_imf_context_client_canvas_set(en->imf_context, evas);
+
+ evas_object_event_callback_add(en->rect, EVAS_CALLBACK_KEY_DOWN, _key_down_cb, en);
+ evas_object_event_callback_add(en->rect, EVAS_CALLBACK_KEY_UP, _key_up_cb, en);
+ evas_object_event_callback_add(en->rect, EVAS_CALLBACK_MOUSE_UP, _mouse_up_cb, en);
+ evas_object_event_callback_add(en->rect, EVAS_CALLBACK_FOCUS_IN, _entry_focus_in_cb, en);
+ evas_object_event_callback_add(en->rect, EVAS_CALLBACK_FOCUS_OUT, _entry_focus_out_cb, en);
+
+ en->have_preedit = EINA_FALSE;
+ en->preedit_start = NULL;
+ en->preedit_end = NULL;
+
+ /* register retrieve surrounding callback */
+ /* This is used for autocapital or autoperiod */
+ ecore_imf_context_retrieve_surrounding_callback_set(en->imf_context, _ecore_imf_retrieve_surrounding_cb, en);
+
+ /* register commit event callback */
+ ecore_imf_context_event_callback_add(en->imf_context, ECORE_IMF_CALLBACK_COMMIT, _ecore_imf_event_commit_cb, en);
+
+ /* register preedit changed event handler */
+ ecore_imf_context_event_callback_add(en->imf_context, ECORE_IMF_CALLBACK_PREEDIT_CHANGED, _ecore_imf_event_preedit_changed_cb, en);
+
+ /* register surrounding delete event callback */
+ /* This is used for autocapital or autoperiod */
+ ecore_imf_context_event_callback_add(en->imf_context, ECORE_IMF_CALLBACK_DELETE_SURROUNDING, _ecore_imf_event_delete_surrounding_cb, en);
+}
+
+static void
+delete_input_field(Entry *en)
+{
+ if (!en) return;
+
+ if (en->rect)
+ {
+ evas_object_del(en->rect);
+ en->rect = NULL;
+ }
+
+ if (en->cursor)
+ {
+ evas_textblock_cursor_free(en->cursor);
+ en->cursor = NULL;
+ }
+
+ if (en->preedit_start)
+ {
+ evas_textblock_cursor_free(en->preedit_start);
+ en->preedit_start = NULL;
+ }
+
+ if (en->preedit_end)
+ {
+ evas_textblock_cursor_free(en->preedit_end);
+ en->preedit_end = NULL;
+ }
+
+ if (en->txt_obj)
+ {
+ evas_object_del(en->txt_obj);
+ en->txt_obj = NULL;
+ }
+
+ if (en->txt_style)
+ {
+ evas_textblock_style_free(en->txt_style);
+ en->txt_style = NULL;
+ }
+
+ if (en->imf_context)
+ {
+ ecore_imf_context_del(en->imf_context);
+ en->imf_context = NULL;
+ }
+}
+
+int main(int argc, char *argv[])
+{
+ Ecore_Evas* ee;
+ Evas* evas;
+ Entry en1, en2;
+
+ if (!ecore_evas_init()) {
+ fprintf(stderr, "failed to call ecore_evas_init()\n");
+ return EXIT_FAILURE;
+ }
+
+ ecore_imf_init();
+ // Create a new window, with size=480x800 and default engine
+ ee = ecore_evas_new(NULL, 0, 0, 480, 800, NULL);
+
+ if (!ee) {
+ fprintf(stderr, "something went wrong... :(\n");
+ return EXIT_FAILURE;
+ }
+
+ ecore_evas_show(ee);
+
+ // Get the canvas off just-created window
+ evas = ecore_evas_get(ee);
+ if (!evas) {
+ fprintf(stderr, "something went wrong... :(\n");
+ return EXIT_FAILURE;
+ }
+
+ // Create input field rectangle
+ Evas_Object* bg = evas_object_rectangle_add(evas);
+ evas_object_size_hint_weight_set(bg, EVAS_HINT_EXPAND, EVAS_HINT_EXPAND);
+ evas_object_move(bg, 0, 0);
+ evas_object_resize(bg, 480, 800);
+ evas_object_color_set(bg, 255, 255, 255, 255);
+ evas_object_show(bg);
+
+ evas_event_callback_add(evas, EVAS_CALLBACK_CANVAS_FOCUS_IN, _canvas_focus_in_cb, NULL);
+ evas_event_callback_add(evas, EVAS_CALLBACK_CANVAS_FOCUS_OUT, _canvas_focus_out_cb, NULL);
+
+ // create input field 1
+ create_input_field(evas, &en1, 40, 60, 400, 80);
+
+ // create input field 2
+ create_input_field(evas, &en2, 40, 180, 400, 80);
+
+ // Give focus to input field 1
+ evas_object_focus_set(en1.rect, EINA_TRUE);
+
+ ecore_main_loop_begin(); // begin mainloop
+
+ delete_input_field(&en1); // delete input field 1
+ delete_input_field(&en2); // delete input field 2
+
+ evas_event_callback_del_full(evas, EVAS_CALLBACK_CANVAS_FOCUS_IN, _canvas_focus_in_cb, NULL);
+ evas_event_callback_del_full(evas, EVAS_CALLBACK_CANVAS_FOCUS_OUT, _canvas_focus_out_cb, NULL);
+
+ ecore_evas_free(ee);
+
+ ecore_imf_shutdown();
+ ecore_evas_shutdown();
+
+ return 0;
+}
projects / framework / uifw / ecore.git / commitdiff