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virtualx-engine/scene/gui/line_edit.cpp
robfram 7f64090401 LineEdit placeholder alignment, content margins, and overflow bugs 
LineEdit doesn't correctly uses style margins nor use placeholders
width correctly, causing multiple rendering bugs.

(cherry picked from commit 53b51f68bf)
2018-04-28 22:30:06 +02:00

1520 lines
37 KiB
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/*************************************************************************/
/* line_edit.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2018 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2018 Godot Engine contributors (cf. AUTHORS.md) */
/* */
/* 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 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 "line_edit.h"
#include "label.h"
#include "message_queue.h"
#include "os/keyboard.h"
#include "os/os.h"
#include "print_string.h"
#include "translation.h"
#ifdef TOOLS_ENABLED
#include "editor/editor_settings.h"
#endif
static bool _is_text_char(CharType c) {
return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || (c >= '0' && c <= '9') || c == '_';
}
void LineEdit::_gui_input(Ref<InputEvent> p_event) {
Ref<InputEventMouseButton> b = p_event;
if (b.is_valid()) {
if (b->is_pressed() && b->get_button_index() == BUTTON_RIGHT && context_menu_enabled) {
menu->set_position(get_global_transform().xform(get_local_mouse_position()));
menu->set_size(Vector2(1, 1));
menu->popup();
grab_focus();
return;
}
if (b->get_button_index() != BUTTON_LEFT)
return;
_reset_caret_blink_timer();
if (b->is_pressed()) {
shift_selection_check_pre(b->get_shift());
set_cursor_at_pixel_pos(b->get_position().x);
if (b->get_shift()) {
selection_fill_at_cursor();
selection.creating = true;
} else {
if (b->is_doubleclick()) {
selection.enabled = true;
selection.begin = 0;
selection.end = text.length();
selection.doubleclick = true;
}
selection.drag_attempt = false;
if ((cursor_pos < selection.begin) || (cursor_pos > selection.end) || !selection.enabled) {
deselect();
selection.cursor_start = cursor_pos;
selection.creating = true;
} else if (selection.enabled) {
selection.drag_attempt = true;
}
}
update();
} else {
if ((!selection.creating) && (!selection.doubleclick)) {
deselect();
}
selection.creating = false;
selection.doubleclick = false;
if (OS::get_singleton()->has_virtual_keyboard())
OS::get_singleton()->show_virtual_keyboard(text, get_global_rect());
}
update();
}
Ref<InputEventMouseMotion> m = p_event;
if (m.is_valid()) {
if (m->get_button_mask() & BUTTON_LEFT) {
if (selection.creating) {
set_cursor_at_pixel_pos(m->get_position().x);
selection_fill_at_cursor();
}
}
}
Ref<InputEventKey> k = p_event;
if (k.is_valid()) {
if (!k->is_pressed())
return;
unsigned int code = k->get_scancode();
if (k->get_command()) {
bool handled = true;
switch (code) {
case (KEY_X): { // CUT
if (editable) {
cut_text();
}
} break;
case (KEY_C): { // COPY
copy_text();
} break;
case (KEY_V): { // PASTE
if (editable) {
paste_text();
}
} break;
case (KEY_Z): { // undo / redo
if (editable) {
if (k->get_shift()) {
redo();
} else {
undo();
}
}
} break;
case (KEY_U): { // Delete from start to cursor
if (editable) {
deselect();
text = text.substr(cursor_pos, text.length() - cursor_pos);
Ref<Font> font = get_font("font");
cached_width = 0;
if (font != NULL) {
for (int i = 0; i < text.length(); i++)
cached_width += font->get_char_size(text[i]).width;
}
set_cursor_position(0);
_text_changed();
}
} break;
case (KEY_Y): { // PASTE (Yank for unix users)
if (editable) {
paste_text();
}
} break;
case (KEY_K): { // Delete from cursor_pos to end
if (editable) {
deselect();
text = text.substr(0, cursor_pos);
_text_changed();
}
} break;
case (KEY_A): { //Select All
select();
} break;
default: { handled = false; }
}
if (handled) {
accept_event();
return;
}
}
_reset_caret_blink_timer();
if (!k->get_metakey()) {
bool handled = true;
switch (code) {
case KEY_KP_ENTER:
case KEY_ENTER: {
emit_signal("text_entered", text);
if (OS::get_singleton()->has_virtual_keyboard())
OS::get_singleton()->hide_virtual_keyboard();
return;
} break;
case KEY_BACKSPACE: {
if (!editable)
break;
if (selection.enabled) {
selection_delete();
break;
}
#ifdef APPLE_STYLE_KEYS
if (k->get_alt()) {
#else
if (k->get_alt()) {
handled = false;
break;
} else if (k->get_command()) {
#endif
int cc = cursor_pos;
bool prev_char = false;
while (cc > 0) {
bool ischar = _is_text_char(text[cc - 1]);
if (prev_char && !ischar)
break;
prev_char = ischar;
cc--;
}
delete_text(cc, cursor_pos);
set_cursor_position(cc);
} else {
delete_char();
}
} break;
case KEY_KP_4: {
if (k->get_unicode() != 0) {
handled = false;
break;
}
// numlock disabled. fallthrough to key_left
}
case KEY_LEFT: {
#ifndef APPLE_STYLE_KEYS
if (!k->get_alt())
#endif
shift_selection_check_pre(k->get_shift());
#ifdef APPLE_STYLE_KEYS
if (k->get_command()) {
set_cursor_position(0);
} else if (k->get_alt()) {
#else
if (k->get_alt()) {
handled = false;
break;
} else if (k->get_command()) {
#endif
bool prev_char = false;
int cc = cursor_pos;
while (cc > 0) {
bool ischar = _is_text_char(text[cc - 1]);
if (prev_char && !ischar)
break;
prev_char = ischar;
cc--;
}
set_cursor_position(cc);
} else {
set_cursor_position(get_cursor_position() - 1);
}
shift_selection_check_post(k->get_shift());
} break;
case KEY_KP_6: {
if (k->get_unicode() != 0) {
handled = false;
break;
}
// numlock disabled. fallthrough to key_right
}
case KEY_RIGHT: {
shift_selection_check_pre(k->get_shift());
#ifdef APPLE_STYLE_KEYS
if (k->get_command()) {
set_cursor_position(text.length());
} else if (k->get_alt()) {
#else
if (k->get_alt()) {
handled = false;
break;
} else if (k->get_command()) {
#endif
bool prev_char = false;
int cc = cursor_pos;
while (cc < text.length()) {
bool ischar = _is_text_char(text[cc]);
if (prev_char && !ischar)
break;
prev_char = ischar;
cc++;
}
set_cursor_position(cc);
} else {
set_cursor_position(get_cursor_position() + 1);
}
shift_selection_check_post(k->get_shift());
} break;
case KEY_UP: {
shift_selection_check_pre(k->get_shift());
set_cursor_position(0);
shift_selection_check_post(k->get_shift());
} break;
case KEY_DOWN: {
shift_selection_check_pre(k->get_shift());
set_cursor_position(text.length());
shift_selection_check_post(k->get_shift());
} break;
case KEY_DELETE: {
if (!editable)
break;
if (k->get_shift() && !k->get_command() && !k->get_alt()) {
cut_text();
break;
}
if (selection.enabled) {
selection_delete();
break;
}
int text_len = text.length();
if (cursor_pos == text_len)
break; // nothing to do
#ifdef APPLE_STYLE_KEYS
if (k->get_alt()) {
#else
if (k->get_alt()) {
handled = false;
break;
} else if (k->get_command()) {
#endif
int cc = cursor_pos;
bool prev_char = false;
while (cc < text.length()) {
bool ischar = _is_text_char(text[cc]);
if (prev_char && !ischar)
break;
prev_char = ischar;
cc++;
}
delete_text(cursor_pos, cc);
} else {
set_cursor_position(cursor_pos + 1);
delete_char();
}
} break;
case KEY_KP_7: {
if (k->get_unicode() != 0) {
handled = false;
break;
}
// numlock disabled. fallthrough to key_home
}
case KEY_HOME: {
shift_selection_check_pre(k->get_shift());
set_cursor_position(0);
shift_selection_check_post(k->get_shift());
} break;
case KEY_KP_1: {
if (k->get_unicode() != 0) {
handled = false;
break;
}
// numlock disabled. fallthrough to key_end
}
case KEY_END: {
shift_selection_check_pre(k->get_shift());
set_cursor_position(text.length());
shift_selection_check_post(k->get_shift());
} break;
default: {
handled = false;
} break;
}
if (handled) {
accept_event();
} else if (!k->get_alt() && !k->get_command()) {
if (k->get_unicode() >= 32 && k->get_scancode() != KEY_DELETE) {
if (editable) {
selection_delete();
CharType ucodestr[2] = { (CharType)k->get_unicode(), 0 };
append_at_cursor(ucodestr);
_text_changed();
accept_event();
}
} else {
return;
}
}
update();
}
return;
}
}
void LineEdit::set_align(Align p_align) {
ERR_FAIL_INDEX(p_align, 4);
align = p_align;
update();
}
LineEdit::Align LineEdit::get_align() const {
return align;
}
Variant LineEdit::get_drag_data(const Point2 &p_point) {
if (selection.drag_attempt && selection.enabled) {
String t = text.substr(selection.begin, selection.end - selection.begin);
Label *l = memnew(Label);
l->set_text(t);
set_drag_preview(l);
return t;
}
return Variant();
}
bool LineEdit::can_drop_data(const Point2 &p_point, const Variant &p_data) const {
return p_data.get_type() == Variant::STRING;
}
void LineEdit::drop_data(const Point2 &p_point, const Variant &p_data) {
if (p_data.get_type() == Variant::STRING) {
set_cursor_at_pixel_pos(p_point.x);
int selected = selection.end - selection.begin;
Ref<Font> font = get_font("font");
if (font != NULL) {
for (int i = selection.begin; i < selection.end; i++)
cached_width -= font->get_char_size(text[i]).width;
}
text.erase(selection.begin, selected);
append_at_cursor(p_data);
selection.begin = cursor_pos - selected;
selection.end = cursor_pos;
}
}
void LineEdit::_notification(int p_what) {
switch (p_what) {
#ifdef TOOLS_ENABLED
case NOTIFICATION_ENTER_TREE: {
if (Engine::get_singleton()->is_editor_hint() && !get_tree()->is_node_being_edited(this)) {
cursor_set_blink_enabled(EDITOR_DEF("text_editor/cursor/caret_blink", false));
cursor_set_blink_speed(EDITOR_DEF("text_editor/cursor/caret_blink_speed", 0.65));
if (!EditorSettings::get_singleton()->is_connected("settings_changed", this, "_editor_settings_changed")) {
EditorSettings::get_singleton()->connect("settings_changed", this, "_editor_settings_changed");
}
}
} break;
#endif
case NOTIFICATION_RESIZED: {
set_cursor_position(get_cursor_position());
} break;
case MainLoop::NOTIFICATION_WM_FOCUS_IN: {
window_has_focus = true;
draw_caret = true;
update();
} break;
case MainLoop::NOTIFICATION_WM_FOCUS_OUT: {
window_has_focus = false;
draw_caret = false;
update();
} break;
case NOTIFICATION_DRAW: {
if ((!has_focus() && !menu->has_focus()) || !window_has_focus) {
draw_caret = false;
}
int width, height;
Size2 size = get_size();
width = size.width;
height = size.height;
RID ci = get_canvas_item();
Ref<StyleBox> style = get_stylebox("normal");
float disabled_alpha = 1.0; // used to set the disabled input text color
if (!is_editable()) {
style = get_stylebox("read_only");
disabled_alpha = .5;
draw_caret = false;
}
Ref<Font> font = get_font("font");
style->draw(ci, Rect2(Point2(), size));
if (has_focus()) {
get_stylebox("focus")->draw(ci, Rect2(Point2(), size));
}
int x_ofs = 0;
int cached_text_width = text.empty() ? cached_placeholder_width : cached_width;
switch (align) {
case ALIGN_FILL:
case ALIGN_LEFT: {
x_ofs = style->get_offset().x;
} break;
case ALIGN_CENTER: {
if (window_pos != 0)
x_ofs = style->get_offset().x;
else
x_ofs = MAX(style->get_margin(MARGIN_LEFT), int(size.width - (cached_text_width)) / 2);
} break;
case ALIGN_RIGHT: {
x_ofs = MAX(style->get_margin(MARGIN_LEFT), int(size.width - style->get_margin(MARGIN_RIGHT) - (cached_text_width)));
} break;
}
int ofs_max = width - style->get_margin(MARGIN_RIGHT);
int char_ofs = window_pos;
int y_area = height - style->get_minimum_size().height;
int y_ofs = style->get_offset().y;
int font_ascent = font->get_ascent();
Color selection_color = get_color("selection_color");
Color font_color = get_color("font_color");
Color font_color_selected = get_color("font_color_selected");
Color cursor_color = get_color("cursor_color");
const String &t = text.empty() ? placeholder : text;
// draw placeholder color
if (text.empty())
font_color.a *= placeholder_alpha;
font_color.a *= disabled_alpha;
if (has_icon("right_icon")) {
Ref<Texture> r_icon = Control::get_icon("right_icon");
ofs_max -= r_icon->get_width();
r_icon->draw(ci, Point2(width - r_icon->get_width() - x_ofs, height / 2 - r_icon->get_height() / 2), Color(1, 1, 1, disabled_alpha * .9));
}
int caret_height = font->get_height() > y_area ? y_area : font->get_height();
while (true) {
//end of string, break!
if (char_ofs >= t.length())
break;
if (char_ofs == cursor_pos) {
if (ime_text.length() > 0) {
int ofs = 0;
while (true) {
if (ofs >= ime_text.length())
break;
CharType cchar = (pass && !text.empty()) ? '*' : ime_text[ofs];
CharType next = (pass && !text.empty()) ? '*' : ime_text[ofs + 1];
int im_char_width = font->get_char_size(cchar, next).width;
if ((x_ofs + im_char_width) > ofs_max)
break;
bool selected = ofs >= ime_selection.x && ofs < ime_selection.x + ime_selection.y;
if (selected) {
VisualServer::get_singleton()->canvas_item_add_rect(ci, Rect2(Point2(x_ofs, y_ofs + caret_height), Size2(im_char_width, 3)), font_color);
} else {
VisualServer::get_singleton()->canvas_item_add_rect(ci, Rect2(Point2(x_ofs, y_ofs + caret_height), Size2(im_char_width, 1)), font_color);
}
font->draw_char(ci, Point2(x_ofs, y_ofs + font_ascent), cchar, next, font_color);
x_ofs += im_char_width;
ofs++;
}
}
}
CharType cchar = (pass && !text.empty()) ? '*' : t[char_ofs];
CharType next = (pass && !text.empty()) ? '*' : t[char_ofs + 1];
int char_width = font->get_char_size(cchar, next).width;
// end of widget, break!
if ((x_ofs + char_width) > ofs_max)
break;
bool selected = selection.enabled && char_ofs >= selection.begin && char_ofs < selection.end;
if (selected)
VisualServer::get_singleton()->canvas_item_add_rect(ci, Rect2(Point2(x_ofs, y_ofs), Size2(char_width, caret_height)), selection_color);
font->draw_char(ci, Point2(x_ofs, y_ofs + font_ascent), cchar, next, selected ? font_color_selected : font_color);
if (char_ofs == cursor_pos && draw_caret) {
if (ime_text.length() == 0) {
VisualServer::get_singleton()->canvas_item_add_rect(ci, Rect2(Point2(x_ofs, y_ofs), Size2(1, caret_height)), cursor_color);
}
}
x_ofs += char_width;
char_ofs++;
}
if (char_ofs == cursor_pos) {
if (ime_text.length() > 0) {
int ofs = 0;
while (true) {
if (ofs >= ime_text.length())
break;
CharType cchar = (pass && !text.empty()) ? '*' : ime_text[ofs];
CharType next = (pass && !text.empty()) ? '*' : ime_text[ofs + 1];
int im_char_width = font->get_char_size(cchar, next).width;
if ((x_ofs + im_char_width) > ofs_max)
break;
bool selected = ofs >= ime_selection.x && ofs < ime_selection.x + ime_selection.y;
if (selected) {
VisualServer::get_singleton()->canvas_item_add_rect(ci, Rect2(Point2(x_ofs, y_ofs + caret_height), Size2(im_char_width, 3)), font_color);
} else {
VisualServer::get_singleton()->canvas_item_add_rect(ci, Rect2(Point2(x_ofs, y_ofs + caret_height), Size2(im_char_width, 1)), font_color);
}
font->draw_char(ci, Point2(x_ofs, y_ofs + font_ascent), cchar, next, font_color);
x_ofs += im_char_width;
ofs++;
}
}
}
if (char_ofs == cursor_pos && draw_caret) { //may be at the end
if (ime_text.length() == 0) {
VisualServer::get_singleton()->canvas_item_add_rect(ci, Rect2(Point2(x_ofs, y_ofs), Size2(1, caret_height)), cursor_color);
}
}
if (has_focus()) {
OS::get_singleton()->set_ime_position(get_global_position() + Point2(x_ofs, y_ofs + caret_height));
OS::get_singleton()->set_ime_intermediate_text_callback(_ime_text_callback, this);
}
} break;
case NOTIFICATION_FOCUS_ENTER: {
if (!caret_blink_enabled) {
draw_caret = true;
}
Point2 cursor_pos = Point2(get_cursor_position(), 1) * get_minimum_size().height;
OS::get_singleton()->set_ime_position(get_global_position() + cursor_pos);
OS::get_singleton()->set_ime_intermediate_text_callback(_ime_text_callback, this);
if (OS::get_singleton()->has_virtual_keyboard())
OS::get_singleton()->show_virtual_keyboard(text, get_global_rect());
} break;
case NOTIFICATION_FOCUS_EXIT: {
OS::get_singleton()->set_ime_position(Point2());
OS::get_singleton()->set_ime_intermediate_text_callback(NULL, NULL);
ime_text = "";
ime_selection = Point2();
if (OS::get_singleton()->has_virtual_keyboard())
OS::get_singleton()->hide_virtual_keyboard();
} break;
}
}
void LineEdit::copy_text() {
if (selection.enabled) {
OS::get_singleton()->set_clipboard(text.substr(selection.begin, selection.end - selection.begin));
}
}
void LineEdit::cut_text() {
if (selection.enabled) {
OS::get_singleton()->set_clipboard(text.substr(selection.begin, selection.end - selection.begin));
selection_delete();
}
}
void LineEdit::paste_text() {
String paste_buffer = OS::get_singleton()->get_clipboard();
if (paste_buffer != "") {
if (selection.enabled) selection_delete();
append_at_cursor(paste_buffer);
if (!text_changed_dirty) {
if (is_inside_tree()) {
MessageQueue::get_singleton()->push_call(this, "_text_changed");
}
text_changed_dirty = true;
}
}
}
void LineEdit::undo() {
if (undo_stack_pos == NULL) {
if (undo_stack.size() <= 1) {
return;
}
undo_stack_pos = undo_stack.back();
} else if (undo_stack_pos == undo_stack.front()) {
return;
}
undo_stack_pos = undo_stack_pos->prev();
TextOperation op = undo_stack_pos->get();
text = op.text;
set_cursor_position(op.cursor_pos);
_emit_text_change();
}
void LineEdit::redo() {
if (undo_stack_pos == NULL) {
return;
}
if (undo_stack_pos == undo_stack.back()) {
return;
}
undo_stack_pos = undo_stack_pos->next();
TextOperation op = undo_stack_pos->get();
text = op.text;
set_cursor_position(op.cursor_pos);
_emit_text_change();
}
void LineEdit::shift_selection_check_pre(bool p_shift) {
if (!selection.enabled && p_shift) {
selection.cursor_start = cursor_pos;
}
if (!p_shift)
deselect();
}
void LineEdit::shift_selection_check_post(bool p_shift) {
if (p_shift)
selection_fill_at_cursor();
}
void LineEdit::set_cursor_at_pixel_pos(int p_x) {
Ref<Font> font = get_font("font");
int ofs = window_pos;
Ref<StyleBox> style = get_stylebox("normal");
int pixel_ofs = 0;
Size2 size = get_size();
switch (align) {
case ALIGN_FILL:
case ALIGN_LEFT: {
pixel_ofs = int(style->get_offset().x);
} break;
case ALIGN_CENTER: {
if (window_pos != 0)
pixel_ofs = int(style->get_offset().x);
else
pixel_ofs = int(size.width - (cached_width)) / 2;
} break;
case ALIGN_RIGHT: {
pixel_ofs = int(size.width - style->get_margin(MARGIN_RIGHT) - (cached_width));
} break;
}
while (ofs < text.length()) {
int char_w = 0;
if (font != NULL) {
char_w = font->get_char_size(text[ofs]).width;
}
pixel_ofs += char_w;
if (pixel_ofs > p_x) { //found what we look for
break;
}
ofs++;
}
set_cursor_position(ofs);
}
bool LineEdit::cursor_get_blink_enabled() const {
return caret_blink_enabled;
}
void LineEdit::cursor_set_blink_enabled(const bool p_enabled) {
caret_blink_enabled = p_enabled;
if (p_enabled) {
caret_blink_timer->start();
} else {
caret_blink_timer->stop();
}
draw_caret = true;
}
float LineEdit::cursor_get_blink_speed() const {
return caret_blink_timer->get_wait_time();
}
void LineEdit::cursor_set_blink_speed(const float p_speed) {
ERR_FAIL_COND(p_speed <= 0);
caret_blink_timer->set_wait_time(p_speed);
}
void LineEdit::_reset_caret_blink_timer() {
if (caret_blink_enabled) {
caret_blink_timer->stop();
caret_blink_timer->start();
draw_caret = true;
update();
}
}
void LineEdit::_toggle_draw_caret() {
draw_caret = !draw_caret;
if (is_visible_in_tree() && has_focus() && window_has_focus) {
update();
}
}
void LineEdit::delete_char() {
if ((text.length() <= 0) || (cursor_pos == 0)) return;
Ref<Font> font = get_font("font");
if (font != NULL) {
cached_width -= font->get_char_size(text[cursor_pos - 1]).width;
}
text.erase(cursor_pos - 1, 1);
set_cursor_position(get_cursor_position() - 1);
_text_changed();
}
void LineEdit::delete_text(int p_from_column, int p_to_column) {
if (text.size() > 0) {
Ref<Font> font = get_font("font");
if (font != NULL) {
for (int i = p_from_column; i < p_to_column; i++)
cached_width -= font->get_char_size(text[i]).width;
}
} else {
cached_width = 0;
}
text.erase(p_from_column, p_to_column - p_from_column);
cursor_pos -= CLAMP(cursor_pos - p_from_column, 0, p_to_column - p_from_column);
if (cursor_pos >= text.length()) {
cursor_pos = text.length();
}
if (window_pos > cursor_pos) {
window_pos = cursor_pos;
}
if (!text_changed_dirty) {
if (is_inside_tree()) {
MessageQueue::get_singleton()->push_call(this, "_text_changed");
}
text_changed_dirty = true;
}
}
void LineEdit::set_text(String p_text) {
clear_internal();
append_at_cursor(p_text);
update();
cursor_pos = 0;
window_pos = 0;
_text_changed();
}
void LineEdit::clear() {
clear_internal();
_text_changed();
}
String LineEdit::get_text() const {
return text;
}
void LineEdit::set_placeholder(String p_text) {
placeholder = tr(p_text);
if ((max_length <= 0) || (placeholder.length() <= max_length)) {
Ref<Font> font = get_font("font");
cached_placeholder_width = 0;
if (font != NULL) {
for (int i = 0; i < placeholder.length(); i++) {
cached_placeholder_width += font->get_char_size(placeholder[i]).width;
}
}
}
update();
}
String LineEdit::get_placeholder() const {
return placeholder;
}
void LineEdit::set_placeholder_alpha(float p_alpha) {
placeholder_alpha = p_alpha;
update();
}
float LineEdit::get_placeholder_alpha() const {
return placeholder_alpha;
}
void LineEdit::set_cursor_position(int p_pos) {
if (p_pos > (int)text.length())
p_pos = text.length();
if (p_pos < 0)
p_pos = 0;
cursor_pos = p_pos;
if (!is_inside_tree()) {
window_pos = cursor_pos;
return;
}
Ref<StyleBox> style = get_stylebox("normal");
Ref<Font> font = get_font("font");
if (cursor_pos <= window_pos) {
/* Adjust window if cursor goes too much to the left */
if (window_pos > 0)
set_window_pos(window_pos - 1);
} else if (cursor_pos > window_pos) {
/* Adjust window if cursor goes too much to the right */
int window_width = get_size().width - style->get_minimum_size().width;
if (has_icon("right_icon")) {
Ref<Texture> r_icon = Control::get_icon("right_icon");
window_width -= r_icon->get_width();
}
if (window_width < 0)
return;
int wp = window_pos;
if (font.is_valid()) {
int accum_width = 0;
for (int i = cursor_pos; i >= window_pos; i--) {
if (i >= text.length()) {
accum_width = font->get_char_size(' ').width; //anything should do
} else {
accum_width += font->get_char_size(text[i], i + 1 < text.length() ? text[i + 1] : 0).width; //anything should do
}
if (accum_width >= window_width)
break;
wp = i;
}
}
if (wp != window_pos)
set_window_pos(wp);
}
update();
}
int LineEdit::get_cursor_position() const {
return cursor_pos;
}
void LineEdit::set_window_pos(int p_pos) {
window_pos = p_pos;
if (window_pos < 0) window_pos = 0;
}
void LineEdit::append_at_cursor(String p_text) {
if ((max_length <= 0) || (text.length() + p_text.length() <= max_length)) {
Ref<Font> font = get_font("font");
if (font != NULL) {
for (int i = 0; i < p_text.length(); i++)
cached_width += font->get_char_size(p_text[i]).width;
} else {
cached_width = 0;
}
String pre = text.substr(0, cursor_pos);
String post = text.substr(cursor_pos, text.length() - cursor_pos);
text = pre + p_text + post;
set_cursor_position(cursor_pos + p_text.length());
}
}
void LineEdit::clear_internal() {
_clear_undo_stack();
cached_width = 0;
cached_placeholder_width = 0;
cursor_pos = 0;
window_pos = 0;
undo_text = "";
text = "";
update();
}
Size2 LineEdit::get_minimum_size() const {
Ref<StyleBox> style = get_stylebox("normal");
Ref<Font> font = get_font("font");
Size2 min = style->get_minimum_size();
min.height += font->get_height();
//minimum size of text
int space_size = font->get_char_size(' ').x;
int mstext = get_constant("minimum_spaces") * space_size;
if (expand_to_text_length) {
mstext = MAX(mstext, font->get_string_size(text).x + space_size); //add a spce because some fonts are too exact
}
min.width += mstext;
return min;
}
/* selection */
void LineEdit::deselect() {
selection.begin = 0;
selection.end = 0;
selection.cursor_start = 0;
selection.enabled = false;
selection.creating = false;
selection.doubleclick = false;
update();
}
void LineEdit::selection_delete() {
if (selection.enabled)
delete_text(selection.begin, selection.end);
deselect();
}
void LineEdit::set_max_length(int p_max_length) {
ERR_FAIL_COND(p_max_length < 0);
max_length = p_max_length;
set_text(text);
}
int LineEdit::get_max_length() const {
return max_length;
}
void LineEdit::selection_fill_at_cursor() {
int aux;
selection.begin = cursor_pos;
selection.end = selection.cursor_start;
if (selection.end < selection.begin) {
aux = selection.end;
selection.end = selection.begin;
selection.begin = aux;
}
selection.enabled = (selection.begin != selection.end);
}
void LineEdit::select_all() {
if (!text.length())
return;
selection.begin = 0;
selection.end = text.length();
selection.enabled = true;
update();
}
void LineEdit::set_editable(bool p_editable) {
editable = p_editable;
update();
}
bool LineEdit::is_editable() const {
return editable;
}
void LineEdit::set_secret(bool p_secret) {
pass = p_secret;
update();
}
bool LineEdit::is_secret() const {
return pass;
}
void LineEdit::select(int p_from, int p_to) {
if (p_from == 0 && p_to == 0) {
deselect();
return;
}
int len = text.length();
if (p_from < 0)
p_from = 0;
if (p_from > len)
p_from = len;
if (p_to < 0 || p_to > len)
p_to = len;
if (p_from >= p_to)
return;
selection.enabled = true;
selection.begin = p_from;
selection.end = p_to;
selection.creating = false;
selection.doubleclick = false;
update();
}
bool LineEdit::is_text_field() const {
return true;
}
void LineEdit::menu_option(int p_option) {
switch (p_option) {
case MENU_CUT: {
if (editable) {
cut_text();
}
} break;
case MENU_COPY: {
copy_text();
} break;
case MENU_PASTE: {
if (editable) {
paste_text();
}
} break;
case MENU_CLEAR: {
if (editable) {
clear();
}
} break;
case MENU_SELECT_ALL: {
select_all();
} break;
case MENU_UNDO: {
if (editable) {
undo();
}
} break;
case MENU_REDO: {
if (editable) {
redo();
}
}
}
}
void LineEdit::set_context_menu_enabled(bool p_enable) {
context_menu_enabled = p_enable;
}
bool LineEdit::is_context_menu_enabled() {
return context_menu_enabled;
}
PopupMenu *LineEdit::get_menu() const {
return menu;
}
#ifdef TOOLS_ENABLED
void LineEdit::_editor_settings_changed() {
cursor_set_blink_enabled(EDITOR_DEF("text_editor/cursor/caret_blink", false));
cursor_set_blink_speed(EDITOR_DEF("text_editor/cursor/caret_blink_speed", 0.65));
}
#endif
void LineEdit::set_expand_to_text_length(bool p_enabled) {
expand_to_text_length = p_enabled;
minimum_size_changed();
set_window_pos(0);
}
bool LineEdit::get_expand_to_text_length() const {
return expand_to_text_length;
}
void LineEdit::_ime_text_callback(void *p_self, String p_text, Point2 p_selection) {
LineEdit *self = (LineEdit *)p_self;
self->ime_text = p_text;
self->ime_selection = p_selection;
self->update();
}
void LineEdit::_text_changed() {
if (expand_to_text_length)
minimum_size_changed();
_emit_text_change();
_clear_redo();
}
void LineEdit::_emit_text_change() {
emit_signal("text_changed", text);
_change_notify("text");
text_changed_dirty = false;
}
void LineEdit::_clear_redo() {
_create_undo_state();
if (undo_stack_pos == NULL) {
return;
}
undo_stack_pos = undo_stack_pos->next();
while (undo_stack_pos) {
List<TextOperation>::Element *elem = undo_stack_pos;
undo_stack_pos = undo_stack_pos->next();
undo_stack.erase(elem);
}
_create_undo_state();
}
void LineEdit::_clear_undo_stack() {
undo_stack.clear();
undo_stack_pos = NULL;
_create_undo_state();
}
void LineEdit::_create_undo_state() {
TextOperation op;
op.text = text;
op.cursor_pos = cursor_pos;
undo_stack.push_back(op);
}
void LineEdit::_bind_methods() {
ClassDB::bind_method(D_METHOD("_text_changed"), &LineEdit::_text_changed);
ClassDB::bind_method(D_METHOD("_toggle_draw_caret"), &LineEdit::_toggle_draw_caret);
#ifdef TOOLS_ENABLED
ClassDB::bind_method("_editor_settings_changed", &LineEdit::_editor_settings_changed);
#endif
ClassDB::bind_method(D_METHOD("set_align", "align"), &LineEdit::set_align);
ClassDB::bind_method(D_METHOD("get_align"), &LineEdit::get_align);
ClassDB::bind_method(D_METHOD("_gui_input"), &LineEdit::_gui_input);
ClassDB::bind_method(D_METHOD("clear"), &LineEdit::clear);
ClassDB::bind_method(D_METHOD("select", "from", "to"), &LineEdit::select, DEFVAL(0), DEFVAL(-1));
ClassDB::bind_method(D_METHOD("select_all"), &LineEdit::select_all);
ClassDB::bind_method(D_METHOD("deselect"), &LineEdit::deselect);
ClassDB::bind_method(D_METHOD("set_text", "text"), &LineEdit::set_text);
ClassDB::bind_method(D_METHOD("get_text"), &LineEdit::get_text);
ClassDB::bind_method(D_METHOD("set_placeholder", "text"), &LineEdit::set_placeholder);
ClassDB::bind_method(D_METHOD("get_placeholder"), &LineEdit::get_placeholder);
ClassDB::bind_method(D_METHOD("set_placeholder_alpha", "alpha"), &LineEdit::set_placeholder_alpha);
ClassDB::bind_method(D_METHOD("get_placeholder_alpha"), &LineEdit::get_placeholder_alpha);
ClassDB::bind_method(D_METHOD("set_cursor_position", "position"), &LineEdit::set_cursor_position);
ClassDB::bind_method(D_METHOD("get_cursor_position"), &LineEdit::get_cursor_position);
ClassDB::bind_method(D_METHOD("set_expand_to_text_length", "enabled"), &LineEdit::set_expand_to_text_length);
ClassDB::bind_method(D_METHOD("get_expand_to_text_length"), &LineEdit::get_expand_to_text_length);
ClassDB::bind_method(D_METHOD("cursor_set_blink_enabled", "enabled"), &LineEdit::cursor_set_blink_enabled);
ClassDB::bind_method(D_METHOD("cursor_get_blink_enabled"), &LineEdit::cursor_get_blink_enabled);
ClassDB::bind_method(D_METHOD("cursor_set_blink_speed", "blink_speed"), &LineEdit::cursor_set_blink_speed);
ClassDB::bind_method(D_METHOD("cursor_get_blink_speed"), &LineEdit::cursor_get_blink_speed);
ClassDB::bind_method(D_METHOD("set_max_length", "chars"), &LineEdit::set_max_length);
ClassDB::bind_method(D_METHOD("get_max_length"), &LineEdit::get_max_length);
ClassDB::bind_method(D_METHOD("append_at_cursor", "text"), &LineEdit::append_at_cursor);
ClassDB::bind_method(D_METHOD("set_editable", "enabled"), &LineEdit::set_editable);
ClassDB::bind_method(D_METHOD("is_editable"), &LineEdit::is_editable);
ClassDB::bind_method(D_METHOD("set_secret", "enabled"), &LineEdit::set_secret);
ClassDB::bind_method(D_METHOD("is_secret"), &LineEdit::is_secret);
ClassDB::bind_method(D_METHOD("menu_option", "option"), &LineEdit::menu_option);
ClassDB::bind_method(D_METHOD("get_menu"), &LineEdit::get_menu);
ClassDB::bind_method(D_METHOD("set_context_menu_enabled", "enable"), &LineEdit::set_context_menu_enabled);
ClassDB::bind_method(D_METHOD("is_context_menu_enabled"), &LineEdit::is_context_menu_enabled);
ADD_SIGNAL(MethodInfo("text_changed", PropertyInfo(Variant::STRING, "new_text")));
ADD_SIGNAL(MethodInfo("text_entered", PropertyInfo(Variant::STRING, "new_text")));
BIND_ENUM_CONSTANT(ALIGN_LEFT);
BIND_ENUM_CONSTANT(ALIGN_CENTER);
BIND_ENUM_CONSTANT(ALIGN_RIGHT);
BIND_ENUM_CONSTANT(ALIGN_FILL);
BIND_ENUM_CONSTANT(MENU_CUT);
BIND_ENUM_CONSTANT(MENU_COPY);
BIND_ENUM_CONSTANT(MENU_PASTE);
BIND_ENUM_CONSTANT(MENU_CLEAR);
BIND_ENUM_CONSTANT(MENU_SELECT_ALL);
BIND_ENUM_CONSTANT(MENU_UNDO);
BIND_ENUM_CONSTANT(MENU_REDO);
BIND_ENUM_CONSTANT(MENU_MAX);
ADD_PROPERTYNZ(PropertyInfo(Variant::STRING, "text"), "set_text", "get_text");
ADD_PROPERTYNZ(PropertyInfo(Variant::INT, "align", PROPERTY_HINT_ENUM, "Left,Center,Right,Fill"), "set_align", "get_align");
ADD_PROPERTYNZ(PropertyInfo(Variant::INT, "max_length"), "set_max_length", "get_max_length");
ADD_PROPERTYNO(PropertyInfo(Variant::BOOL, "editable"), "set_editable", "is_editable");
ADD_PROPERTYNZ(PropertyInfo(Variant::BOOL, "secret"), "set_secret", "is_secret");
ADD_PROPERTYNZ(PropertyInfo(Variant::BOOL, "expand_to_text_length"), "set_expand_to_text_length", "get_expand_to_text_length");
ADD_PROPERTY(PropertyInfo(Variant::INT, "focus_mode", PROPERTY_HINT_ENUM, "None,Click,All"), "set_focus_mode", "get_focus_mode");
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "context_menu_enabled"), "set_context_menu_enabled", "is_context_menu_enabled");
ADD_GROUP("Placeholder", "placeholder_");
ADD_PROPERTYNZ(PropertyInfo(Variant::STRING, "placeholder_text"), "set_placeholder", "get_placeholder");
ADD_PROPERTYNZ(PropertyInfo(Variant::REAL, "placeholder_alpha", PROPERTY_HINT_RANGE, "0,1,0.001"), "set_placeholder_alpha", "get_placeholder_alpha");
ADD_GROUP("Caret", "caret_");
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "caret_blink"), "cursor_set_blink_enabled", "cursor_get_blink_enabled");
ADD_PROPERTYNZ(PropertyInfo(Variant::REAL, "caret_blink_speed", PROPERTY_HINT_RANGE, "0.1,10,0.1"), "cursor_set_blink_speed", "cursor_get_blink_speed");
ADD_PROPERTY(PropertyInfo(Variant::INT, "caret_position"), "set_cursor_position", "get_cursor_position");
}
LineEdit::LineEdit() {
undo_stack_pos = NULL;
_create_undo_state();
align = ALIGN_LEFT;
cached_width = 0;
cached_placeholder_width = 0;
cursor_pos = 0;
window_pos = 0;
window_has_focus = true;
max_length = 0;
pass = false;
text_changed_dirty = false;
placeholder_alpha = 0.6;
deselect();
set_focus_mode(FOCUS_ALL);
editable = true;
set_default_cursor_shape(CURSOR_IBEAM);
set_mouse_filter(MOUSE_FILTER_STOP);
draw_caret = true;
caret_blink_enabled = false;
caret_blink_timer = memnew(Timer);
add_child(caret_blink_timer);
caret_blink_timer->set_wait_time(0.65);
caret_blink_timer->connect("timeout", this, "_toggle_draw_caret");
cursor_set_blink_enabled(false);
context_menu_enabled = true;
menu = memnew(PopupMenu);
add_child(menu);
menu->add_item(TTR("Cut"), MENU_CUT, KEY_MASK_CMD | KEY_X);
menu->add_item(TTR("Copy"), MENU_COPY, KEY_MASK_CMD | KEY_C);
menu->add_item(TTR("Paste"), MENU_PASTE, KEY_MASK_CMD | KEY_V);
menu->add_separator();
menu->add_item(TTR("Select All"), MENU_SELECT_ALL, KEY_MASK_CMD | KEY_A);
menu->add_item(TTR("Clear"), MENU_CLEAR);
menu->add_separator();
menu->add_item(TTR("Undo"), MENU_UNDO, KEY_MASK_CMD | KEY_Z);
menu->add_item(TTR("Redo"), MENU_REDO, KEY_MASK_CMD | KEY_MASK_SHIFT | KEY_Z);
menu->connect("id_pressed", this, "menu_option");
expand_to_text_length = false;
}
LineEdit::~LineEdit() {
}
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