diff options
Diffstat (limited to 'clients/editor.c')
| -rw-r--r-- | clients/editor.c | 1681 |
1 files changed, 0 insertions, 1681 deletions
diff --git a/clients/editor.c b/clients/editor.c deleted file mode 100644 index a59f9679..00000000 --- a/clients/editor.c +++ /dev/null @@ -1,1681 +0,0 @@ -/* - * Copyright © 2012 Openismus GmbH - * Copyright © 2012 Intel Corporation - * - * Permission is hereby granted, free of charge, to any person obtaining a - * copy of this software and associated documentation files (the "Software"), - * to deal in the Software without restriction, including without limitation - * the rights to use, copy, modify, merge, publish, distribute, sublicense, - * and/or sell copies of the Software, and to permit persons to whom the - * Software is furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice (including the next - * paragraph) shall be included in all copies or substantial portions of the - * Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER - * DEALINGS IN THE SOFTWARE. - */ - -#include "config.h" - -#include <assert.h> -#include <errno.h> -#include <stdint.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <stdbool.h> -#include <unistd.h> - -#include <linux/input.h> -#include <cairo.h> - -#include <pango/pangocairo.h> - -#include <libweston/config-parser.h> -#include "shared/helpers.h" -#include "shared/xalloc.h" -#include "window.h" -#include "text-input-unstable-v1-client-protocol.h" - -struct text_entry { - struct widget *widget; - struct window *window; - char *text; - int active; - bool panel_visible; - uint32_t cursor; - uint32_t anchor; - struct { - char *text; - int32_t cursor; - char *commit; - PangoAttrList *attr_list; - } preedit; - struct { - PangoAttrList *attr_list; - int32_t cursor; - } preedit_info; - struct { - int32_t cursor; - int32_t anchor; - uint32_t delete_index; - uint32_t delete_length; - bool invalid_delete; - } pending_commit; - struct zwp_text_input_v1 *text_input; - PangoLayout *layout; - struct { - xkb_mod_mask_t shift_mask; - } keysym; - uint32_t serial; - uint32_t reset_serial; - uint32_t content_purpose; - bool click_to_show; - char *preferred_language; - bool button_pressed; -}; - -struct editor { - struct zwp_text_input_manager_v1 *text_input_manager; - struct wl_data_source *selection; - char *selected_text; - struct display *display; - struct window *window; - struct widget *widget; - struct text_entry *entry; - struct text_entry *editor; - struct text_entry *active_entry; -}; - -static const char * -utf8_end_char(const char *p) -{ - while ((*p & 0xc0) == 0x80) - p++; - return p; -} - -static const char * -utf8_prev_char(const char *s, const char *p) -{ - for (--p; p >= s; --p) { - if ((*p & 0xc0) != 0x80) - return p; - } - return NULL; -} - -static const char * -utf8_next_char(const char *p) -{ - if (*p != 0) - return utf8_end_char(++p); - return NULL; -} - -static void -move_up(const char *p, uint32_t *cursor) -{ - const char *posr, *posr_i; - char text[16]; - - xkb_keysym_to_utf8(XKB_KEY_Return, text, sizeof(text)); - - posr = strstr(p, text); - while (posr) { - if (*cursor > (unsigned)(posr-p)) { - posr_i = strstr(posr+1, text); - if (!posr_i || !(*cursor > (unsigned)(posr_i-p))) { - *cursor = posr-p; - break; - } - posr = posr_i; - } else { - break; - } - } -} - -static void -move_down(const char *p, uint32_t *cursor) -{ - const char *posr; - char text[16]; - - xkb_keysym_to_utf8(XKB_KEY_Return, text, sizeof(text)); - - posr = strstr(p, text); - while (posr) { - if (*cursor <= (unsigned)(posr-p)) { - *cursor = posr-p + 1; - break; - } - posr = strstr(posr+1, text); - } -} - -static void text_entry_redraw_handler(struct widget *widget, void *data); -static void text_entry_button_handler(struct widget *widget, - struct input *input, uint32_t time, - uint32_t button, - enum wl_pointer_button_state state, void *data); -static void text_entry_touch_handler(struct widget *widget, struct input *input, - uint32_t serial, uint32_t time, int32_t id, - float tx, float ty, void *data); -static int text_entry_motion_handler(struct widget *widget, - struct input *input, uint32_t time, - float x, float y, void *data); -static void text_entry_insert_at_cursor(struct text_entry *entry, const char *text, - int32_t cursor, int32_t anchor); -static void text_entry_set_preedit(struct text_entry *entry, - const char *preedit_text, - int preedit_cursor); -static void text_entry_delete_text(struct text_entry *entry, - uint32_t index, uint32_t length); -static void text_entry_delete_selected_text(struct text_entry *entry); -static void text_entry_reset_preedit(struct text_entry *entry); -static void text_entry_commit_and_reset(struct text_entry *entry); -static void text_entry_get_cursor_rectangle(struct text_entry *entry, struct rectangle *rectangle); -static void text_entry_update(struct text_entry *entry); - -static void -text_input_commit_string(void *data, - struct zwp_text_input_v1 *text_input, - uint32_t serial, - const char *text) -{ - struct text_entry *entry = data; - - if ((entry->serial - serial) > (entry->serial - entry->reset_serial)) { - fprintf(stderr, "Ignore commit. Serial: %u, Current: %u, Reset: %u\n", - serial, entry->serial, entry->reset_serial); - return; - } - - if (entry->pending_commit.invalid_delete) { - fprintf(stderr, "Ignore commit. Invalid previous delete_surrounding event.\n"); - memset(&entry->pending_commit, 0, sizeof entry->pending_commit); - return; - } - - text_entry_reset_preedit(entry); - - if (entry->pending_commit.delete_length) { - text_entry_delete_text(entry, - entry->pending_commit.delete_index, - entry->pending_commit.delete_length); - } else { - text_entry_delete_selected_text(entry); - } - - text_entry_insert_at_cursor(entry, text, - entry->pending_commit.cursor, - entry->pending_commit.anchor); - - memset(&entry->pending_commit, 0, sizeof entry->pending_commit); - - widget_schedule_redraw(entry->widget); -} - -static void -clear_pending_preedit(struct text_entry *entry) -{ - memset(&entry->pending_commit, 0, sizeof entry->pending_commit); - - pango_attr_list_unref(entry->preedit_info.attr_list); - - entry->preedit_info.cursor = 0; - entry->preedit_info.attr_list = NULL; - - memset(&entry->preedit_info, 0, sizeof entry->preedit_info); -} - -static void -text_input_preedit_string(void *data, - struct zwp_text_input_v1 *text_input, - uint32_t serial, - const char *text, - const char *commit) -{ - struct text_entry *entry = data; - - if ((entry->serial - serial) > (entry->serial - entry->reset_serial)) { - fprintf(stderr, "Ignore preedit_string. Serial: %u, Current: %u, Reset: %u\n", - serial, entry->serial, entry->reset_serial); - clear_pending_preedit(entry); - return; - } - - if (entry->pending_commit.invalid_delete) { - fprintf(stderr, "Ignore preedit_string. Invalid previous delete_surrounding event.\n"); - clear_pending_preedit(entry); - return; - } - - if (entry->pending_commit.delete_length) { - text_entry_delete_text(entry, - entry->pending_commit.delete_index, - entry->pending_commit.delete_length); - } else { - text_entry_delete_selected_text(entry); - } - - text_entry_set_preedit(entry, text, entry->preedit_info.cursor); - entry->preedit.commit = strdup(commit); - entry->preedit.attr_list = pango_attr_list_ref(entry->preedit_info.attr_list); - - clear_pending_preedit(entry); - - text_entry_update(entry); - - widget_schedule_redraw(entry->widget); -} - -static void -text_input_delete_surrounding_text(void *data, - struct zwp_text_input_v1 *text_input, - int32_t index, - uint32_t length) -{ - struct text_entry *entry = data; - uint32_t text_length; - - entry->pending_commit.delete_index = entry->cursor + index; - entry->pending_commit.delete_length = length; - entry->pending_commit.invalid_delete = false; - - text_length = strlen(entry->text); - - if (entry->pending_commit.delete_index > text_length || - length > text_length || - entry->pending_commit.delete_index + length > text_length) { - fprintf(stderr, "delete_surrounding_text: Invalid index: %d," \ - "length %u'; cursor: %u text length: %u\n", index, length, entry->cursor, text_length); - entry->pending_commit.invalid_delete = true; - return; - } -} - -static void -text_input_cursor_position(void *data, - struct zwp_text_input_v1 *text_input, - int32_t index, - int32_t anchor) -{ - struct text_entry *entry = data; - - entry->pending_commit.cursor = index; - entry->pending_commit.anchor = anchor; -} - -static void -text_input_preedit_styling(void *data, - struct zwp_text_input_v1 *text_input, - uint32_t index, - uint32_t length, - uint32_t style) -{ - struct text_entry *entry = data; - PangoAttribute *attr1 = NULL; - PangoAttribute *attr2 = NULL; - - if (!entry->preedit_info.attr_list) - entry->preedit_info.attr_list = pango_attr_list_new(); - - switch (style) { - case ZWP_TEXT_INPUT_V1_PREEDIT_STYLE_DEFAULT: - case ZWP_TEXT_INPUT_V1_PREEDIT_STYLE_UNDERLINE: - attr1 = pango_attr_underline_new(PANGO_UNDERLINE_SINGLE); - break; - case ZWP_TEXT_INPUT_V1_PREEDIT_STYLE_INCORRECT: - attr1 = pango_attr_underline_new(PANGO_UNDERLINE_ERROR); - attr2 = pango_attr_underline_color_new(65535, 0, 0); - break; - case ZWP_TEXT_INPUT_V1_PREEDIT_STYLE_SELECTION: - attr1 = pango_attr_background_new(0.3 * 65535, 0.3 * 65535, 65535); - attr2 = pango_attr_foreground_new(65535, 65535, 65535); - break; - case ZWP_TEXT_INPUT_V1_PREEDIT_STYLE_HIGHLIGHT: - case ZWP_TEXT_INPUT_V1_PREEDIT_STYLE_ACTIVE: - attr1 = pango_attr_underline_new(PANGO_UNDERLINE_SINGLE); - attr2 = pango_attr_weight_new(PANGO_WEIGHT_BOLD); - break; - case ZWP_TEXT_INPUT_V1_PREEDIT_STYLE_INACTIVE: - attr1 = pango_attr_underline_new(PANGO_UNDERLINE_SINGLE); - attr2 = pango_attr_foreground_new(0.3 * 65535, 0.3 * 65535, 0.3 * 65535); - break; - } - - if (attr1) { - attr1->start_index = entry->cursor + index; - attr1->end_index = entry->cursor + index + length; - pango_attr_list_insert(entry->preedit_info.attr_list, attr1); - } - - if (attr2) { - attr2->start_index = entry->cursor + index; - attr2->end_index = entry->cursor + index + length; - pango_attr_list_insert(entry->preedit_info.attr_list, attr2); - } -} - -static void -text_input_preedit_cursor(void *data, - struct zwp_text_input_v1 *text_input, - int32_t index) -{ - struct text_entry *entry = data; - - entry->preedit_info.cursor = index; -} - -static void -text_input_modifiers_map(void *data, - struct zwp_text_input_v1 *text_input, - struct wl_array *map) -{ - struct text_entry *entry = data; - - entry->keysym.shift_mask = keysym_modifiers_get_mask(map, "Shift"); -} - -static void -text_input_keysym(void *data, - struct zwp_text_input_v1 *text_input, - uint32_t serial, - uint32_t time, - uint32_t key, - uint32_t state, - uint32_t modifiers) -{ - struct text_entry *entry = data; - const char *new_char; - - if (key == XKB_KEY_Left || - key == XKB_KEY_Right) { - if (state != WL_KEYBOARD_KEY_STATE_RELEASED) - return; - - if (key == XKB_KEY_Left) - new_char = utf8_prev_char(entry->text, entry->text + entry->cursor); - else - new_char = utf8_next_char(entry->text + entry->cursor); - - if (new_char != NULL) { - entry->cursor = new_char - entry->text; - } - - if (!(modifiers & entry->keysym.shift_mask)) - entry->anchor = entry->cursor; - widget_schedule_redraw(entry->widget); - - return; - } - - if (key == XKB_KEY_Up || - key == XKB_KEY_Down) { - if (state != WL_KEYBOARD_KEY_STATE_RELEASED) - return; - - if (key == XKB_KEY_Up) - move_up(entry->text, &entry->cursor); - else - move_down(entry->text, &entry->cursor); - - if (!(modifiers & entry->keysym.shift_mask)) - entry->anchor = entry->cursor; - widget_schedule_redraw(entry->widget); - - return; - } - - if (key == XKB_KEY_BackSpace) { - const char *start, *end; - - if (state != WL_KEYBOARD_KEY_STATE_RELEASED) - return; - - text_entry_commit_and_reset(entry); - - start = utf8_prev_char(entry->text, entry->text + entry->cursor); - if (start == NULL) - return; - - end = utf8_next_char(start); - - text_entry_delete_text(entry, - start - entry->text, - end - start); - - return; - } - - if (key == XKB_KEY_Tab || - key == XKB_KEY_KP_Enter || - key == XKB_KEY_Return) { - char text[16]; - - if (state != WL_KEYBOARD_KEY_STATE_RELEASED) - return; - - xkb_keysym_to_utf8(key, text, sizeof(text)); - - text_entry_insert_at_cursor(entry, text, 0, 0); - - return; - } -} - -static void -text_input_enter(void *data, - struct zwp_text_input_v1 *text_input, - struct wl_surface *surface) -{ - struct text_entry *entry = data; - - if (surface != window_get_wl_surface(entry->window)) - return; - - entry->active++; - - text_entry_update(entry); - entry->reset_serial = entry->serial; - - widget_schedule_redraw(entry->widget); -} - -static void -text_input_leave(void *data, - struct zwp_text_input_v1 *text_input) -{ - struct text_entry *entry = data; - - text_entry_commit_and_reset(entry); - entry->active--; - - if (!entry->active) { - zwp_text_input_v1_hide_input_panel(text_input); - entry->panel_visible = false; - } - - widget_schedule_redraw(entry->widget); -} - -static void -text_input_input_panel_state(void *data, - struct zwp_text_input_v1 *text_input, - uint32_t state) -{ -} - -static void -text_input_language(void *data, - struct zwp_text_input_v1 *text_input, - uint32_t serial, - const char *language) -{ - fprintf(stderr, "input language is %s \n", language); -} - -static void -text_input_text_direction(void *data, - struct zwp_text_input_v1 *text_input, - uint32_t serial, - uint32_t direction) -{ - struct text_entry *entry = data; - PangoContext *context = pango_layout_get_context(entry->layout); - PangoDirection pango_direction; - - - switch (direction) { - case ZWP_TEXT_INPUT_V1_TEXT_DIRECTION_LTR: - pango_direction = PANGO_DIRECTION_LTR; - break; - case ZWP_TEXT_INPUT_V1_TEXT_DIRECTION_RTL: - pango_direction = PANGO_DIRECTION_RTL; - break; - case ZWP_TEXT_INPUT_V1_TEXT_DIRECTION_AUTO: - default: - pango_direction = PANGO_DIRECTION_NEUTRAL; - } - - pango_context_set_base_dir(context, pango_direction); -} - -static const struct zwp_text_input_v1_listener text_input_listener = { - text_input_enter, - text_input_leave, - text_input_modifiers_map, - text_input_input_panel_state, - text_input_preedit_string, - text_input_preedit_styling, - text_input_preedit_cursor, - text_input_commit_string, - text_input_cursor_position, - text_input_delete_surrounding_text, - text_input_keysym, - text_input_language, - text_input_text_direction -}; - -static void -data_source_target(void *data, - struct wl_data_source *source, const char *mime_type) -{ -} - -static void -data_source_send(void *data, - struct wl_data_source *source, - const char *mime_type, int32_t fd) -{ - struct editor *editor = data; - - if (write(fd, editor->selected_text, strlen(editor->selected_text) + 1) < 0) - fprintf(stderr, "write failed: %s\n", strerror(errno)); - - close(fd); -} - -static void -data_source_cancelled(void *data, struct wl_data_source *source) -{ - wl_data_source_destroy(source); -} - -static const struct wl_data_source_listener data_source_listener = { - data_source_target, - data_source_send, - data_source_cancelled -}; - -static void -paste_func(void *buffer, size_t len, - int32_t x, int32_t y, void *data) -{ - struct editor *editor = data; - struct text_entry *entry = editor->active_entry; - char *pasted_text; - - if (!entry) - return; - - pasted_text = malloc(len + 1); - strncpy(pasted_text, buffer, len); - pasted_text[len] = '\0'; - - text_entry_insert_at_cursor(entry, pasted_text, 0, 0); - - free(pasted_text); -} - -static void -editor_copy_cut(struct editor *editor, struct input *input, bool cut) -{ - struct text_entry *entry = editor->active_entry; - - if (!entry) - return; - - if (entry->cursor != entry->anchor) { - int start_index = MIN(entry->cursor, entry->anchor); - int end_index = MAX(entry->cursor, entry->anchor); - int len = end_index - start_index; - - editor->selected_text = realloc(editor->selected_text, len + 1); - strncpy(editor->selected_text, &entry->text[start_index], len); - editor->selected_text[len] = '\0'; - - if (cut) - text_entry_delete_text(entry, start_index, len); - - editor->selection = - display_create_data_source(editor->display); - if (!editor->selection) - return; - - wl_data_source_offer(editor->selection, - "text/plain;charset=utf-8"); - wl_data_source_add_listener(editor->selection, - &data_source_listener, editor); - input_set_selection(input, editor->selection, - display_get_serial(editor->display)); - } -} - -static void -editor_paste(struct editor *editor, struct input *input) -{ - input_receive_selection_data(input, - "text/plain;charset=utf-8", - paste_func, editor); -} - -static void -menu_func(void *data, struct input *input, int index) -{ - struct window *window = data; - struct editor *editor = window_get_user_data(window); - - fprintf(stderr, "picked entry %d\n", index); - - switch (index) { - case 0: - editor_copy_cut(editor, input, true); - break; - case 1: - editor_copy_cut(editor, input, false); - break; - case 2: - editor_paste(editor, input); - break; - } -} - -static void -show_menu(struct editor *editor, struct input *input, uint32_t time) -{ - int32_t x, y; - static const char *entries[] = { - "Cut", "Copy", "Paste" - }; - - input_get_position(input, &x, &y); - window_show_menu(editor->display, input, time, editor->window, - x + 10, y + 20, menu_func, - entries, ARRAY_LENGTH(entries)); -} - -static struct text_entry* -text_entry_create(struct editor *editor, const char *text) -{ - struct text_entry *entry; - - entry = xzalloc(sizeof *entry); - - entry->widget = widget_add_widget(editor->widget, entry); - entry->window = editor->window; - entry->text = strdup(text); - entry->active = 0; - entry->panel_visible = false; - entry->cursor = strlen(text); - entry->anchor = entry->cursor; - entry->text_input = - zwp_text_input_manager_v1_create_text_input(editor->text_input_manager); - zwp_text_input_v1_add_listener(entry->text_input, - &text_input_listener, entry); - - widget_set_redraw_handler(entry->widget, text_entry_redraw_handler); - widget_set_button_handler(entry->widget, text_entry_button_handler); - widget_set_motion_handler(entry->widget, text_entry_motion_handler); - widget_set_touch_down_handler(entry->widget, text_entry_touch_handler); - - return entry; -} - -static void -text_entry_destroy(struct text_entry *entry) -{ - widget_destroy(entry->widget); - zwp_text_input_v1_destroy(entry->text_input); - g_clear_object(&entry->layout); - free(entry->text); - free(entry->preferred_language); - free(entry); -} - -static void -redraw_handler(struct widget *widget, void *data) -{ - struct editor *editor = data; - cairo_surface_t *surface; - struct rectangle allocation; - cairo_t *cr; - - surface = window_get_surface(editor->window); - widget_get_allocation(editor->widget, &allocation); - - cr = cairo_create(surface); - cairo_rectangle(cr, allocation.x, allocation.y, allocation.width, allocation.height); - cairo_clip(cr); - - cairo_translate(cr, allocation.x, allocation.y); - - /* Draw background */ - cairo_push_group(cr); - cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE); - cairo_set_source_rgba(cr, 1, 1, 1, 1); - cairo_rectangle(cr, 0, 0, allocation.width, allocation.height); - cairo_fill(cr); - - cairo_pop_group_to_source(cr); - cairo_paint(cr); - - cairo_destroy(cr); - cairo_surface_destroy(surface); -} - -static void -text_entry_allocate(struct text_entry *entry, int32_t x, int32_t y, - int32_t width, int32_t height) -{ - widget_set_allocation(entry->widget, x, y, width, height); -} - -static void -resize_handler(struct widget *widget, - int32_t width, int32_t height, void *data) -{ - struct editor *editor = data; - struct rectangle allocation; - - widget_get_allocation(editor->widget, &allocation); - - text_entry_allocate(editor->entry, - allocation.x + 20, allocation.y + 20, - width - 40, height / 2 - 40); - text_entry_allocate(editor->editor, - allocation.x + 20, allocation.y + height / 2 + 20, - width - 40, height / 2 - 40); -} - -static void -text_entry_activate(struct text_entry *entry, - struct wl_seat *seat) -{ - struct wl_surface *surface = window_get_wl_surface(entry->window); - - if (entry->click_to_show && entry->active) { - entry->panel_visible = !entry->panel_visible; - - if (entry->panel_visible) - zwp_text_input_v1_show_input_panel(entry->text_input); - else - zwp_text_input_v1_hide_input_panel(entry->text_input); - - return; - } - - if (!entry->click_to_show) - zwp_text_input_v1_show_input_panel(entry->text_input); - - zwp_text_input_v1_activate(entry->text_input, - seat, - surface); -} - -static void -text_entry_deactivate(struct text_entry *entry, - struct wl_seat *seat) -{ - zwp_text_input_v1_deactivate(entry->text_input, - seat); -} - -static void -text_entry_update_layout(struct text_entry *entry) -{ - char *text; - PangoAttrList *attr_list; - - assert(entry->cursor <= (strlen(entry->text) + - (entry->preedit.text ? strlen(entry->preedit.text) : 0))); - - if (entry->preedit.text) { - text = xmalloc(strlen(entry->text) + strlen(entry->preedit.text) + 1); - strncpy(text, entry->text, entry->cursor); - strcpy(text + entry->cursor, entry->preedit.text); - strcpy(text + entry->cursor + strlen(entry->preedit.text), - entry->text + entry->cursor); - } else { - text = strdup(entry->text); - } - - if (entry->cursor != entry->anchor) { - int start_index = MIN(entry->cursor, entry->anchor); - int end_index = MAX(entry->cursor, entry->anchor); - PangoAttribute *attr; - - attr_list = pango_attr_list_copy(entry->preedit.attr_list); - - if (!attr_list) - attr_list = pango_attr_list_new(); - - attr = pango_attr_background_new(0.3 * 65535, 0.3 * 65535, 65535); - attr->start_index = start_index; - attr->end_index = end_index; - pango_attr_list_insert(attr_list, attr); - - attr = pango_attr_foreground_new(65535, 65535, 65535); - attr->start_index = start_index; - attr->end_index = end_index; - pango_attr_list_insert(attr_list, attr); - } else { - attr_list = pango_attr_list_ref(entry->preedit.attr_list); - } - - if (entry->preedit.text && !entry->preedit.attr_list) { - PangoAttribute *attr; - - if (!attr_list) - attr_list = pango_attr_list_new(); - - attr = pango_attr_underline_new(PANGO_UNDERLINE_SINGLE); - attr->start_index = entry->cursor; - attr->end_index = entry->cursor + strlen(entry->preedit.text); - pango_attr_list_insert(attr_list, attr); - } - - if (entry->layout) { - pango_layout_set_text(entry->layout, text, -1); - pango_layout_set_attributes(entry->layout, attr_list); - } - - free(text); - pango_attr_list_unref(attr_list); -} - -static void -text_entry_update(struct text_entry *entry) -{ - struct rectangle cursor_rectangle; - - zwp_text_input_v1_set_content_type(entry->text_input, - ZWP_TEXT_INPUT_V1_CONTENT_HINT_NONE, - entry->content_purpose); - - zwp_text_input_v1_set_surrounding_text(entry->text_input, - entry->text, - entry->cursor, - entry->anchor); - - if (entry->preferred_language) - zwp_text_input_v1_set_preferred_language(entry->text_input, - entry->preferred_language); - - text_entry_get_cursor_rectangle(entry, &cursor_rectangle); - zwp_text_input_v1_set_cursor_rectangle(entry->text_input, - cursor_rectangle.x, - cursor_rectangle.y, - cursor_rectangle.width, - cursor_rectangle.height); - - zwp_text_input_v1_commit_state(entry->text_input, ++entry->serial); -} - -static void -text_entry_insert_at_cursor(struct text_entry *entry, const char *text, - int32_t cursor, int32_t anchor) -{ - char *new_text = xmalloc(strlen(entry->text) + strlen(text) + 1); - - strncpy(new_text, entry->text, entry->cursor); - strcpy(new_text + entry->cursor, text); - strcpy(new_text + entry->cursor + strlen(text), - entry->text + entry->cursor); - - free(entry->text); - entry->text = new_text; - if (anchor >= 0) - entry->anchor = entry->cursor + strlen(text) + anchor; - else - entry->anchor = entry->cursor + 1 + anchor; - - if (cursor >= 0) - entry->cursor += strlen(text) + cursor; - else - entry->cursor += 1 + cursor; - - text_entry_update_layout(entry); - - widget_schedule_redraw(entry->widget); - - text_entry_update(entry); -} - -static void -text_entry_reset_preedit(struct text_entry *entry) -{ - entry->preedit.cursor = 0; - - free(entry->preedit.text); - entry->preedit.text = NULL; - - free(entry->preedit.commit); - entry->preedit.commit = NULL; - - pango_attr_list_unref(entry->preedit.attr_list); - entry->preedit.attr_list = NULL; -} - -static void -text_entry_commit_and_reset(struct text_entry *entry) -{ - char *commit = NULL; - - if (entry->preedit.commit) - commit = strdup(entry->preedit.commit); - - text_entry_reset_preedit(entry); - if (commit) { - text_entry_insert_at_cursor(entry, commit, 0, 0); - free(commit); - } - - zwp_text_input_v1_reset(entry->text_input); - text_entry_update(entry); - entry->reset_serial = entry->serial; -} - -static void -text_entry_set_preedit(struct text_entry *entry, - const char *preedit_text, - int preedit_cursor) -{ - text_entry_reset_preedit(entry); - - if (!preedit_text) - return; - - entry->preedit.text = strdup(preedit_text); - entry->preedit.cursor = preedit_cursor; - - text_entry_update_layout(entry); - - widget_schedule_redraw(entry->widget); -} - -static uint32_t -text_entry_try_invoke_preedit_action(struct text_entry *entry, - int32_t x, int32_t y, - uint32_t button, - enum wl_pointer_button_state state) -{ - int index, trailing; - uint32_t cursor; - const char *text; - - if (!entry->preedit.text) - return 0; - - pango_layout_xy_to_index(entry->layout, - x * PANGO_SCALE, y * PANGO_SCALE, - &index, &trailing); - - text = pango_layout_get_text(entry->layout); - cursor = g_utf8_offset_to_pointer(text + index, trailing) - text; - - if (cursor < entry->cursor || - cursor > entry->cursor + strlen(entry->preedit.text)) { - return 0; - } - - if (state == WL_POINTER_BUTTON_STATE_RELEASED) - zwp_text_input_v1_invoke_action(entry->text_input, - button, - cursor - entry->cursor); - - return 1; -} - -static bool -text_entry_has_preedit(struct text_entry *entry) -{ - return entry->preedit.text && (strlen(entry->preedit.text) > 0); -} - -static void -text_entry_set_cursor_position(struct text_entry *entry, - int32_t x, int32_t y, - bool move_anchor) -{ - int index, trailing; - const char *text; - uint32_t cursor; - - pango_layout_xy_to_index(entry->layout, - x * PANGO_SCALE, y * PANGO_SCALE, - &index, &trailing); - - text = pango_layout_get_text(entry->layout); - - cursor = g_utf8_offset_to_pointer(text + index, trailing) - text; - - if (move_anchor) - entry->anchor = cursor; - - if (text_entry_has_preedit(entry)) { - text_entry_commit_and_reset(entry); - - assert(!text_entry_has_preedit(entry)); - } - - if (entry->cursor == cursor) - return; - - entry->cursor = cursor; - - text_entry_update_layout(entry); - - widget_schedule_redraw(entry->widget); - - text_entry_update(entry); -} - -static void -text_entry_delete_text(struct text_entry *entry, - uint32_t index, uint32_t length) -{ - uint32_t l; - - assert(index <= strlen(entry->text)); - assert(index + length <= strlen(entry->text)); - assert(index + length >= length); - - l = strlen(entry->text + index + length); - memmove(entry->text + index, - entry->text + index + length, - l + 1); - - if (entry->cursor > (index + length)) - entry->cursor -= length; - else if (entry->cursor > index) - entry->cursor = index; - - entry->anchor = entry->cursor; - - text_entry_update_layout(entry); - - widget_schedule_redraw(entry->widget); - - text_entry_update(entry); -} - -static void -text_entry_delete_selected_text(struct text_entry *entry) -{ - uint32_t start_index = entry->anchor < entry->cursor ? entry->anchor : entry->cursor; - uint32_t end_index = entry->anchor < entry->cursor ? entry->cursor : entry->anchor; - - if (entry->anchor == entry->cursor) - return; - - text_entry_delete_text(entry, start_index, end_index - start_index); - - entry->anchor = entry->cursor; -} - -static void -text_entry_get_cursor_rectangle(struct text_entry *entry, struct rectangle *rectangle) -{ - struct rectangle allocation; - PangoRectangle extents; - PangoRectangle cursor_pos; - - widget_get_allocation(entry->widget, &allocation); - - if (entry->preedit.text && entry->preedit.cursor < 0) { - rectangle->x = 0; - rectangle->y = 0; - rectangle->width = 0; - rectangle->height = 0; - return; - } - - - pango_layout_get_extents(entry->layout, &extents, NULL); - pango_layout_get_cursor_pos(entry->layout, - entry->cursor + entry->preedit.cursor, - &cursor_pos, NULL); - - rectangle->x = allocation.x + (allocation.height / 2) + PANGO_PIXELS(cursor_pos.x); - rectangle->y = allocation.y + 10 + PANGO_PIXELS(cursor_pos.y); - rectangle->width = PANGO_PIXELS(cursor_pos.width); - rectangle->height = PANGO_PIXELS(cursor_pos.height); -} - -static void -text_entry_draw_cursor(struct text_entry *entry, cairo_t *cr) -{ - PangoRectangle extents; - PangoRectangle cursor_pos; - - if (entry->preedit.text && entry->preedit.cursor < 0) - return; - - pango_layout_get_extents(entry->layout, &extents, NULL); - pango_layout_get_cursor_pos(entry->layout, - entry->cursor + entry->preedit.cursor, - &cursor_pos, NULL); - - cairo_set_line_width(cr, 1.0); - cairo_move_to(cr, PANGO_PIXELS(cursor_pos.x), PANGO_PIXELS(cursor_pos.y)); - cairo_line_to(cr, PANGO_PIXELS(cursor_pos.x), PANGO_PIXELS(cursor_pos.y) + PANGO_PIXELS(cursor_pos.height)); - cairo_stroke(cr); -} - -static int -text_offset_left(struct rectangle *allocation) -{ - return 10; -} - -static int -text_offset_top(struct rectangle *allocation) -{ - return allocation->height / 2; -} - -static void -text_entry_redraw_handler(struct widget *widget, void *data) -{ - struct text_entry *entry = data; - cairo_surface_t *surface; - struct rectangle allocation; - cairo_t *cr; - - surface = window_get_surface(entry->window); - widget_get_allocation(entry->widget, &allocation); - - cr = cairo_create(surface); - cairo_rectangle(cr, allocation.x, allocation.y, allocation.width, allocation.height); - cairo_clip(cr); - - cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE); - - cairo_push_group(cr); - cairo_translate(cr, allocation.x, allocation.y); - - cairo_set_source_rgba(cr, 1, 1, 1, 1); - cairo_rectangle(cr, 0, 0, allocation.width, allocation.height); - cairo_fill(cr); - - cairo_set_operator(cr, CAIRO_OPERATOR_OVER); - - if (entry->active) { - cairo_rectangle(cr, 0, 0, allocation.width, allocation.height); - cairo_set_line_width (cr, 3); - cairo_set_source_rgba(cr, 0, 0, 1, 1.0); - cairo_stroke(cr); - } - - cairo_set_source_rgba(cr, 0, 0, 0, 1); - - cairo_translate(cr, - text_offset_left(&allocation), - text_offset_top(&allocation)); - - if (!entry->layout) - entry->layout = pango_cairo_create_layout(cr); - else - pango_cairo_update_layout(cr, entry->layout); - - text_entry_update_layout(entry); - - pango_cairo_show_layout(cr, entry->layout); - - text_entry_draw_cursor(entry, cr); - - cairo_pop_group_to_source(cr); - cairo_paint(cr); - - cairo_destroy(cr); - cairo_surface_destroy(surface); -} - -static int -text_entry_motion_handler(struct widget *widget, - struct input *input, uint32_t time, - float x, float y, void *data) -{ - struct text_entry *entry = data; - struct rectangle allocation; - int tx, ty; - - if (!entry->button_pressed) { - return CURSOR_IBEAM; - } - - widget_get_allocation(entry->widget, &allocation); - - tx = x - allocation.x - text_offset_left(&allocation); - ty = y - allocation.y - text_offset_top(&allocation); - - text_entry_set_cursor_position(entry, tx, ty, false); - - return CURSOR_IBEAM; -} - -static void -text_entry_button_handler(struct widget *widget, - struct input *input, uint32_t time, - uint32_t button, - enum wl_pointer_button_state state, void *data) -{ - struct text_entry *entry = data; - struct rectangle allocation; - struct editor *editor; - int32_t x, y; - uint32_t result; - - widget_get_allocation(entry->widget, &allocation); - input_get_position(input, &x, &y); - - x -= allocation.x + text_offset_left(&allocation); - y -= allocation.y + text_offset_top(&allocation); - - editor = window_get_user_data(entry->window); - - switch (button) { - case BTN_LEFT: - entry->button_pressed = (state == WL_POINTER_BUTTON_STATE_PRESSED); - if (state == WL_POINTER_BUTTON_STATE_PRESSED) - input_grab(input, entry->widget, button); - else - input_ungrab(input); - break; - case BTN_RIGHT: - if (state == WL_POINTER_BUTTON_STATE_PRESSED) - show_menu(editor, input, time); - break; - } - - if (text_entry_has_preedit(entry)) { - result = text_entry_try_invoke_preedit_action(entry, x, y, button, state); - - if (result) - return; - } - - if (state == WL_POINTER_BUTTON_STATE_PRESSED && - button == BTN_LEFT) { - struct wl_seat *seat = input_get_seat(input); - - text_entry_activate(entry, seat); - editor->active_entry = entry; - - text_entry_set_cursor_position(entry, x, y, true); - } -} - -static void -text_entry_touch_handler(struct widget *widget, struct input *input, - uint32_t serial, uint32_t time, int32_t id, - float tx, float ty, void *data) -{ - struct text_entry *entry = data; - struct wl_seat *seat = input_get_seat(input); - struct rectangle allocation; - struct editor *editor; - int32_t x, y; - - widget_get_allocation(entry->widget, &allocation); - - x = tx - (allocation.x + text_offset_left(&allocation)); - y = ty - (allocation.y + text_offset_top(&allocation)); - - editor = window_get_user_data(entry->window); - text_entry_activate(entry, seat); - editor->active_entry = entry; - - text_entry_set_cursor_position(entry, x, y, true); -} - -static void -editor_button_handler(struct widget *widget, - struct input *input, uint32_t time, - uint32_t button, - enum wl_pointer_button_state state, void *data) -{ - struct editor *editor = data; - - if (button != BTN_LEFT) { - return; - } - - if (state == WL_POINTER_BUTTON_STATE_PRESSED) { - struct wl_seat *seat = input_get_seat(input); - - text_entry_deactivate(editor->entry, seat); - text_entry_deactivate(editor->editor, seat); - editor->active_entry = NULL; - } -} - -static void -editor_touch_handler(struct widget *widget, struct input *input, - uint32_t serial, uint32_t time, int32_t id, - float tx, float ty, void *data) -{ - struct editor *editor = data; - - struct wl_seat *seat = input_get_seat(input); - - text_entry_deactivate(editor->entry, seat); - text_entry_deactivate(editor->editor, seat); - editor->active_entry = NULL; -} - -static void -keyboard_focus_handler(struct window *window, - struct input *device, void *data) -{ - struct editor *editor = data; - - window_schedule_redraw(editor->window); -} - -static int -handle_bound_key(struct editor *editor, - struct input *input, uint32_t sym, uint32_t time) -{ - switch (sym) { - case XKB_KEY_X: - editor_copy_cut(editor, input, true); - return 1; - case XKB_KEY_C: - editor_copy_cut(editor, input, false); - return 1; - case XKB_KEY_V: - editor_paste(editor, input); - return 1; - default: - return 0; - } -} - -static void -key_handler(struct window *window, - struct input *input, uint32_t time, - uint32_t key, uint32_t sym, enum wl_keyboard_key_state state, - void *data) -{ - struct editor *editor = data; - struct text_entry *entry; - const char *new_char; - char text[16]; - uint32_t modifiers; - - if (!editor->active_entry) - return; - - entry = editor->active_entry; - - if (state != WL_KEYBOARD_KEY_STATE_PRESSED) - return; - - modifiers = input_get_modifiers(input); - if ((modifiers & MOD_CONTROL_MASK) && - (modifiers & MOD_SHIFT_MASK) && - handle_bound_key(editor, input, sym, time)) - return; - - switch (sym) { - case XKB_KEY_BackSpace: - text_entry_commit_and_reset(entry); - - new_char = utf8_prev_char(entry->text, entry->text + entry->cursor); - if (new_char != NULL) - text_entry_delete_text(entry, - new_char - entry->text, - (entry->text + entry->cursor) - new_char); - break; - case XKB_KEY_Delete: - text_entry_commit_and_reset(entry); - - new_char = utf8_next_char(entry->text + entry->cursor); - if (new_char != NULL) - text_entry_delete_text(entry, - entry->cursor, - new_char - (entry->text + entry->cursor)); - break; - case XKB_KEY_Left: - text_entry_commit_and_reset(entry); - - new_char = utf8_prev_char(entry->text, entry->text + entry->cursor); - if (new_char != NULL) { - entry->cursor = new_char - entry->text; - if (!(input_get_modifiers(input) & MOD_SHIFT_MASK)) - entry->anchor = entry->cursor; - widget_schedule_redraw(entry->widget); - } - break; - case XKB_KEY_Right: - text_entry_commit_and_reset(entry); - - new_char = utf8_next_char(entry->text + entry->cursor); - if (new_char != NULL) { - entry->cursor = new_char - entry->text; - if (!(input_get_modifiers(input) & MOD_SHIFT_MASK)) - entry->anchor = entry->cursor; - widget_schedule_redraw(entry->widget); - } - break; - case XKB_KEY_Up: - text_entry_commit_and_reset(entry); - - move_up(entry->text, &entry->cursor); - if (!(input_get_modifiers(input) & MOD_SHIFT_MASK)) - entry->anchor = entry->cursor; - widget_schedule_redraw(entry->widget); - break; - case XKB_KEY_Down: - text_entry_commit_and_reset(entry); - - move_down(entry->text, &entry->cursor); - if (!(input_get_modifiers(input) & MOD_SHIFT_MASK)) - entry->anchor = entry->cursor; - widget_schedule_redraw(entry->widget); - break; - case XKB_KEY_Escape: - break; - default: - if (xkb_keysym_to_utf8(sym, text, sizeof(text)) <= 0) - break; - - text_entry_commit_and_reset(entry); - - text_entry_insert_at_cursor(entry, text, 0, 0); - break; - } - - widget_schedule_redraw(entry->widget); -} - -static void -global_handler(struct display *display, uint32_t name, - const char *interface, uint32_t version, void *data) -{ - struct editor *editor = data; - - if (!strcmp(interface, "zwp_text_input_manager_v1")) { - editor->text_input_manager = - display_bind(display, name, - &zwp_text_input_manager_v1_interface, 1); - } -} - -/** Display help for command line options, and exit */ -static bool opt_help = false; - -/** Require a distinct click to show the input panel (virtual keyboard) */ -static bool opt_click_to_show = false; - -/** Set a specific (RFC-3066) language. Used for the virtual keyboard, etc. */ -static const char *opt_preferred_language = NULL; - -/** - * \brief command line options for editor - */ -static const struct weston_option editor_options[] = { - { WESTON_OPTION_BOOLEAN, "help", 'h', &opt_help }, - { WESTON_OPTION_BOOLEAN, "click-to-show", 'C', &opt_click_to_show }, - { WESTON_OPTION_STRING, "preferred-language", 'L', &opt_preferred_language }, -}; - -static void -usage(const char *program_name, int exit_code) -{ - unsigned k; - - fprintf(stderr, "Usage: %s [OPTIONS] [FILENAME]\n\n", program_name); - for (k = 0; k < ARRAY_LENGTH(editor_options); k++) { - const struct weston_option *p = &editor_options[k]; - if (p->name) { - fprintf(stderr, " --%s", p->name); - if (p->type != WESTON_OPTION_BOOLEAN) - fprintf(stderr, "=VALUE"); - fprintf(stderr, "\n"); - } - if (p->short_name) { - fprintf(stderr, " -%c", p->short_name); - if (p->type != WESTON_OPTION_BOOLEAN) - fprintf(stderr, "VALUE"); - fprintf(stderr, "\n"); - } - } - exit(exit_code); -} - -/* Load the contents of a file into a UTF-8 text buffer and return it. - * - * Caller is responsible for freeing the buffer when done. - * On error, returns NULL. - */ -static char * -read_file(char *filename) -{ - char *buffer = NULL; - int buf_size, read_size; - FILE *fin; - int errsv; - - fin = fopen(filename, "r"); - if (fin == NULL) - goto error; - - /* Determine required buffer size */ - if (fseek(fin, 0, SEEK_END) != 0) - goto error; - buf_size = ftell(fin); - if (buf_size < 0) - goto error; - rewind(fin); - - /* Create buffer and read in the text */ - buffer = (char*) malloc(sizeof(char) * (buf_size + 1)); - if (buffer == NULL) - goto error; - read_size = fread(buffer, sizeof(char), buf_size, fin); - fclose(fin); - if (buf_size != read_size) - goto error; - buffer[buf_size] = '\0'; - - return buffer; - -error: - errsv = errno; - if (fin) - fclose(fin); - free(buffer); - errno = errsv ? errsv : EINVAL; - - return NULL; -} - -int -main(int argc, char *argv[]) -{ - struct editor editor; - char *text_buffer = NULL; - - parse_options(editor_options, ARRAY_LENGTH(editor_options), - &argc, argv); - if (opt_help) - usage(argv[0], EXIT_SUCCESS); - - if (argc > 1) { - if (argv[1][0] == '-') - usage(argv[0], EXIT_FAILURE); - - text_buffer = read_file(argv[1]); - if (text_buffer == NULL) { - fprintf(stderr, "could not read file '%s': %s\n", - argv[1], strerror(errno)); - return -1; - } - } - - memset(&editor, 0, sizeof editor); - - editor.display = display_create(&argc, argv); - if (editor.display == NULL) { - fprintf(stderr, "failed to create display: %s\n", - strerror(errno)); - free(text_buffer); - return -1; - } - - display_set_user_data(editor.display, &editor); - display_set_global_handler(editor.display, global_handler); - - if (editor.text_input_manager == NULL) { - fprintf(stderr, "No text input manager global\n"); - display_destroy(editor.display); - free(text_buffer); - return -1; - } - - editor.window = window_create(editor.display); - editor.widget = window_frame_create(editor.window, &editor); - - if (text_buffer) - editor.entry = text_entry_create(&editor, text_buffer); - else - editor.entry = text_entry_create(&editor, "Entry"); - editor.entry->click_to_show = opt_click_to_show; - if (opt_preferred_language) - editor.entry->preferred_language = strdup(opt_preferred_language); - editor.editor = text_entry_create(&editor, "Numeric"); - editor.editor->content_purpose = ZWP_TEXT_INPUT_V1_CONTENT_PURPOSE_NUMBER; - editor.editor->click_to_show = opt_click_to_show; - editor.selection = NULL; - editor.selected_text = NULL; - - window_set_title(editor.window, "Text Editor"); - window_set_key_handler(editor.window, key_handler); - window_set_keyboard_focus_handler(editor.window, - keyboard_focus_handler); - window_set_user_data(editor.window, &editor); - - widget_set_redraw_handler(editor.widget, redraw_handler); - widget_set_resize_handler(editor.widget, resize_handler); - widget_set_button_handler(editor.widget, editor_button_handler); - widget_set_touch_down_handler(editor.widget, editor_touch_handler); - - window_schedule_resize(editor.window, 500, 400); - - display_run(editor.display); - - if (editor.selected_text) - free(editor.selected_text); - if (editor.selection) - wl_data_source_destroy(editor.selection); - text_entry_destroy(editor.entry); - text_entry_destroy(editor.editor); - widget_destroy(editor.widget); - window_destroy(editor.window); - display_destroy(editor.display); - free(text_buffer); - - return 0; -} |