724 lines
18 KiB
C++
724 lines
18 KiB
C++
/*************************************************************************/
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/* label.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* http://www.godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur. */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#include "label.h"
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#include "print_string.h"
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#include "globals.h"
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#include "translation.h"
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void Label::set_autowrap(bool p_autowrap) {
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autowrap=p_autowrap;
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word_cache_dirty=true;
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minimum_size_changed();
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update();
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}
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bool Label::has_autowrap() const {
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return autowrap;
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}
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void Label::set_uppercase(bool p_uppercase) {
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uppercase=p_uppercase;
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word_cache_dirty=true;
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minimum_size_changed();
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update();
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}
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bool Label::is_uppercase() const {
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return uppercase;
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}
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int Label::get_line_height() const {
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return get_font("font")->get_height();
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}
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void Label::_notification(int p_what) {
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if (p_what==NOTIFICATION_DRAW) {
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if (clip || autowrap)
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VisualServer::get_singleton()->canvas_item_set_clip(get_canvas_item(),true);
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if (word_cache_dirty)
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regenerate_word_cache();
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RID ci = get_canvas_item();
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Size2 string_size;
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Size2 size=get_size();
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Ref<Font> font = get_font("font");
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Color font_color = get_color("font_color");
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Color font_color_shadow = get_color("font_color_shadow");
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bool use_outline = get_constant("shadow_as_outline");
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Point2 shadow_ofs(get_constant("shadow_offset_x"),get_constant("shadow_offset_y"));
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int line_spacing = get_constant("line_spacing");
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VisualServer::get_singleton()->canvas_item_set_distance_field_mode(get_canvas_item(),font.is_valid() && font->is_distance_field_hint());
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int font_h = font->get_height()+line_spacing;
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int lines_visible = (size.y+line_spacing)/font_h;
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int space_w=font->get_char_size(' ').width;
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int chars_total=0;
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int vbegin=0,vsep=0;
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if (lines_visible > line_count) {
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lines_visible = line_count;
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}
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if (max_lines_visible >= 0 && lines_visible > max_lines_visible) {
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lines_visible = max_lines_visible;
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}
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if (lines_visible > 0) {
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switch(valign) {
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case VALIGN_TOP: {
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//nothing
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} break;
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case VALIGN_CENTER: {
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vbegin=(size.y - (lines_visible * font_h - line_spacing)) / 2;
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vsep=0;
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} break;
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case VALIGN_BOTTOM: {
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vbegin=size.y - (lines_visible * font_h - line_spacing);
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vsep=0;
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} break;
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case VALIGN_FILL: {
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vbegin=0;
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if (lines_visible>1) {
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vsep=(size.y - (lines_visible * font_h - line_spacing)) / (lines_visible - 1);
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} else {
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vsep=0;
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}
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} break;
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}
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}
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WordCache *wc = word_cache;
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if (!wc)
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return;
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int line=0;
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int line_to=lines_skipped + (lines_visible>0?lines_visible:1);
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while(wc) {
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/* handle lines not meant to be drawn quickly */
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if (line>=line_to)
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break;
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if (line<lines_skipped) {
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while (wc && wc->char_pos>=0)
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wc=wc->next;
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if (wc)
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wc=wc->next;
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line++;
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continue;
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}
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/* handle lines normally */
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if (wc->char_pos<0) {
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//empty line
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wc=wc->next;
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line++;
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continue;
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}
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WordCache *from=wc;
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WordCache *to=wc;
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int taken=0;
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int spaces=0;
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while(to && to->char_pos>=0) {
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taken+=to->pixel_width;
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if (to!=from && to->space_count) {
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spaces+=to->space_count;
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}
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to=to->next;
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}
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bool can_fill = to && to->char_pos==WordCache::CHAR_WRAPLINE;
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float x_ofs=0;
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switch (align) {
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case ALIGN_FILL:
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case ALIGN_LEFT: {
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x_ofs=0;
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} break;
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case ALIGN_CENTER: {
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x_ofs=int(size.width-(taken+spaces*space_w))/2;;
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} break;
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case ALIGN_RIGHT: {
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x_ofs=int(size.width-(taken+spaces*space_w));
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} break;
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}
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int y_ofs=(line-lines_skipped)*font_h + font->get_ascent();
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y_ofs+=vbegin + line*vsep;
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while(from!=to) {
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// draw a word
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int pos = from->char_pos;
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if (from->char_pos<0) {
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ERR_PRINT("BUG");
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return;
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}
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if (from->space_count) {
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/* spacing */
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x_ofs+=space_w*from->space_count;
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if (can_fill && align==ALIGN_FILL && spaces) {
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x_ofs+=int((size.width-(taken+space_w*spaces))/spaces);
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}
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}
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if (font_color_shadow.a>0) {
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int chars_total_shadow = chars_total; //save chars drawn
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float x_ofs_shadow=x_ofs;
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for (int i=0;i<from->word_len;i++) {
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if (visible_chars < 0 || chars_total_shadow<visible_chars) {
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CharType c = text[i+pos];
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CharType n = text[i+pos+1];
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if (uppercase) {
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c=String::char_uppercase(c);
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n=String::char_uppercase(c);
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}
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float move=font->draw_char(ci, Point2( x_ofs_shadow, y_ofs )+shadow_ofs, c, n,font_color_shadow );
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if (use_outline) {
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font->draw_char(ci, Point2( x_ofs_shadow, y_ofs )+Vector2(-shadow_ofs.x,shadow_ofs.y), c, n,font_color_shadow );
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font->draw_char(ci, Point2( x_ofs_shadow, y_ofs )+Vector2(shadow_ofs.x,-shadow_ofs.y), c, n,font_color_shadow );
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font->draw_char(ci, Point2( x_ofs_shadow, y_ofs )+Vector2(-shadow_ofs.x,-shadow_ofs.y), c, n,font_color_shadow );
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}
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x_ofs_shadow+=move;
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chars_total_shadow++;
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}
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}
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}
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for (int i=0;i<from->word_len;i++) {
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if (visible_chars < 0 || chars_total<visible_chars) {
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CharType c = text[i+pos];
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CharType n = text[i+pos+1];
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if (uppercase) {
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c=String::char_uppercase(c);
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n=String::char_uppercase(c);
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}
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x_ofs+=font->draw_char(ci,Point2( x_ofs, y_ofs ), c, n, font_color );
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chars_total++;
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}
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}
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from=from->next;
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}
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wc=to?to->next:0;
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line++;
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}
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}
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if (p_what==NOTIFICATION_THEME_CHANGED) {
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word_cache_dirty=true;
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update();
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}
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if (p_what==NOTIFICATION_RESIZED) {
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word_cache_dirty=true;
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}
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}
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Size2 Label::get_minimum_size() const {
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if (autowrap)
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return Size2(1,1);
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else {
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// don't want to mutable everything
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if(word_cache_dirty)
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const_cast<Label*>(this)->regenerate_word_cache();
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Size2 ms=minsize;
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if (clip)
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ms.width=1;
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return ms;
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}
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}
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int Label::get_longest_line_width() const {
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Ref<Font> font = get_font("font");
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int max_line_width=0;
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int line_width=0;
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for (int i=0;i<text.size();i++) {
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CharType current=text[i];
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if (uppercase)
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current=String::char_uppercase(current);
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if (current<32) {
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if (current=='\n') {
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if (line_width>max_line_width)
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max_line_width=line_width;
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line_width=0;
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}
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} else {
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int char_width=font->get_char_size(current,text[i+1]).width;
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line_width+=char_width;
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}
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}
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if (line_width>max_line_width)
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max_line_width=line_width;
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return max_line_width;
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}
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int Label::get_line_count() const {
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if (!is_inside_tree())
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return 1;
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if (word_cache_dirty)
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const_cast<Label*>(this)->regenerate_word_cache();
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return line_count;
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}
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int Label::get_visible_line_count() const {
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int line_spacing = get_constant("line_spacing");
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int font_h = get_font("font")->get_height()+line_spacing;
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int lines_visible = (get_size().y+line_spacing)/font_h;
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if (lines_visible > line_count)
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lines_visible = line_count;
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if (max_lines_visible >= 0 && lines_visible > max_lines_visible)
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lines_visible = max_lines_visible;
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return lines_visible;
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}
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void Label::regenerate_word_cache() {
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while (word_cache) {
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WordCache *current=word_cache;
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word_cache=current->next;
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memdelete( current );
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}
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int width=autowrap?get_size().width:get_longest_line_width();
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Ref<Font> font = get_font("font");
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int current_word_size=0;
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int word_pos=0;
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int line_width=0;
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int space_count=0;
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int space_width=font->get_char_size(' ').width;
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int line_spacing = get_constant("line_spacing");
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line_count=1;
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total_char_cache=0;
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WordCache *last=NULL;
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for (int i=0;i<text.size()+1;i++) {
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CharType current=i<text.length()?text[i]:' '; //always a space at the end, so the algo works
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if (uppercase)
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current=String::char_uppercase(current);
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// ranges taken from http://www.unicodemap.org/
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// if your language is not well supported, consider helping improve
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// the unicode support in Godot.
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bool separatable = (current>=0x2E08 && current<=0xFAFF) || (current>=0xFE30 && current<=0xFE4F);
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//current>=33 && (current < 65||current >90) && (current<97||current>122) && (current<48||current>57);
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bool insert_newline=false;
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int char_width;
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if (current<33) {
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if (current_word_size>0) {
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WordCache *wc = memnew( WordCache );
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if (word_cache) {
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last->next=wc;
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} else {
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word_cache=wc;
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}
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last=wc;
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wc->pixel_width=current_word_size;
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wc->char_pos=word_pos;
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wc->word_len=i-word_pos;
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wc->space_count = space_count;
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current_word_size=0;
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space_count=0;
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}
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if (current=='\n') {
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insert_newline=true;
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} else {
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total_char_cache++;
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}
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if (i<text.length() && text[i] == ' ') {
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total_char_cache--; // do not count spaces
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if (line_width > 0 || last==NULL || last->char_pos!=WordCache::CHAR_WRAPLINE) {
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space_count++;
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line_width+=space_width;
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}else {
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space_count=0;
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}
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}
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} else {
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// latin characters
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if (current_word_size==0) {
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word_pos=i;
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}
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char_width=font->get_char_size(current,text[i+1]).width;
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current_word_size+=char_width;
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line_width+=char_width;
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total_char_cache++;
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}
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if ((autowrap && (line_width >= width) && ((last && last->char_pos >= 0) || separatable)) || insert_newline) {
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if (separatable) {
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if (current_word_size>0) {
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WordCache *wc = memnew( WordCache );
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if (word_cache) {
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last->next=wc;
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} else {
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word_cache=wc;
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}
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last=wc;
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wc->pixel_width=current_word_size-char_width;
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wc->char_pos=word_pos;
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wc->word_len=i-word_pos;
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wc->space_count = space_count;
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current_word_size=char_width;
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space_count=0;
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word_pos=i;
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}
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}
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WordCache *wc = memnew( WordCache );
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if (word_cache) {
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last->next=wc;
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} else {
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word_cache=wc;
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}
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last=wc;
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wc->pixel_width=0;
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wc->char_pos=insert_newline?WordCache::CHAR_NEWLINE:WordCache::CHAR_WRAPLINE;
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line_width=current_word_size;
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line_count++;
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space_count=0;
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}
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}
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if (!autowrap) {
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minsize.width=width;
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if (max_lines_visible > 0 && line_count > max_lines_visible) {
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minsize.height=(font->get_height() * max_lines_visible) + (line_spacing * (max_lines_visible - 1));
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} else {
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minsize.height=(font->get_height() * line_count)+(line_spacing * (line_count - 1));
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}
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}
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word_cache_dirty=false;
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}
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void Label::set_align(Align p_align) {
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ERR_FAIL_INDEX(p_align,4);
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align=p_align;
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update();
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}
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Label::Align Label::get_align() const{
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return align;
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}
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void Label::set_valign(VAlign p_align) {
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ERR_FAIL_INDEX(p_align,4);
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valign=p_align;
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update();
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}
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Label::VAlign Label::get_valign() const{
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return valign;
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}
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void Label::set_text(const String& p_string) {
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String str = XL_MESSAGE(p_string);
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if (text==str)
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return;
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text=str;
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word_cache_dirty=true;
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if (percent_visible<1)
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visible_chars=get_total_character_count()*percent_visible;
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update();
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if (!autowrap) {
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minimum_size_changed();
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}
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}
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void Label::set_clip_text(bool p_clip) {
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clip=p_clip;
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update();
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minimum_size_changed();
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}
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bool Label::is_clipping_text() const {
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return clip;
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}
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String Label::get_text() const {
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return text;
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}
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void Label::set_visible_characters(int p_amount) {
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visible_chars=p_amount;
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if (get_total_character_count() > 0) {
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percent_visible=(float)p_amount/(float)total_char_cache;
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}
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update();
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}
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int Label::get_visible_characters() const {
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return visible_chars;
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}
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|
|
|
void Label::set_percent_visible(float p_percent) {
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|
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|
if (p_percent<0 || p_percent>=1) {
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|
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|
visible_chars=-1;
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|
percent_visible=1;
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|
|
|
} else {
|
|
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|
visible_chars=get_total_character_count()*p_percent;
|
|
percent_visible=p_percent;
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|
|
|
}
|
|
update();
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|
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|
}
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|
|
|
float Label::get_percent_visible() const{
|
|
|
|
return percent_visible;
|
|
}
|
|
|
|
void Label::set_lines_skipped(int p_lines) {
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|
|
|
lines_skipped=p_lines;
|
|
update();
|
|
}
|
|
|
|
int Label::get_lines_skipped() const{
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|
|
|
return lines_skipped;
|
|
}
|
|
|
|
void Label::set_max_lines_visible(int p_lines) {
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|
|
|
max_lines_visible=p_lines;
|
|
update();
|
|
}
|
|
|
|
int Label::get_max_lines_visible() const{
|
|
|
|
return max_lines_visible;
|
|
}
|
|
|
|
int Label::get_total_character_count() const {
|
|
|
|
if (word_cache_dirty)
|
|
const_cast<Label*>(this)->regenerate_word_cache();
|
|
|
|
return total_char_cache;
|
|
}
|
|
|
|
void Label::_bind_methods() {
|
|
|
|
ObjectTypeDB::bind_method(_MD("set_align","align"),&Label::set_align);
|
|
ObjectTypeDB::bind_method(_MD("get_align"),&Label::get_align);
|
|
ObjectTypeDB::bind_method(_MD("set_valign","valign"),&Label::set_valign);
|
|
ObjectTypeDB::bind_method(_MD("get_valign"),&Label::get_valign);
|
|
ObjectTypeDB::bind_method(_MD("set_text","text"),&Label::set_text);
|
|
ObjectTypeDB::bind_method(_MD("get_text"),&Label::get_text);
|
|
ObjectTypeDB::bind_method(_MD("set_autowrap","enable"),&Label::set_autowrap);
|
|
ObjectTypeDB::bind_method(_MD("has_autowrap"),&Label::has_autowrap);
|
|
ObjectTypeDB::bind_method(_MD("set_clip_text","enable"),&Label::set_clip_text);
|
|
ObjectTypeDB::bind_method(_MD("is_clipping_text"),&Label::is_clipping_text);
|
|
ObjectTypeDB::bind_method(_MD("set_uppercase","enable"),&Label::set_uppercase);
|
|
ObjectTypeDB::bind_method(_MD("is_uppercase"),&Label::is_uppercase);
|
|
ObjectTypeDB::bind_method(_MD("get_line_height"),&Label::get_line_height);
|
|
ObjectTypeDB::bind_method(_MD("get_line_count"),&Label::get_line_count);
|
|
ObjectTypeDB::bind_method(_MD("get_visible_line_count"),&Label::get_visible_line_count);
|
|
ObjectTypeDB::bind_method(_MD("get_total_character_count"),&Label::get_total_character_count);
|
|
ObjectTypeDB::bind_method(_MD("set_visible_characters","amount"),&Label::set_visible_characters);
|
|
ObjectTypeDB::bind_method(_MD("get_visible_characters"),&Label::get_visible_characters);
|
|
ObjectTypeDB::bind_method(_MD("set_percent_visible","percent_visible"),&Label::set_percent_visible);
|
|
ObjectTypeDB::bind_method(_MD("get_percent_visible"),&Label::get_percent_visible);
|
|
ObjectTypeDB::bind_method(_MD("set_lines_skipped","lines_skipped"),&Label::set_lines_skipped);
|
|
ObjectTypeDB::bind_method(_MD("get_lines_skipped"),&Label::get_lines_skipped);
|
|
ObjectTypeDB::bind_method(_MD("set_max_lines_visible","lines_visible"),&Label::set_max_lines_visible);
|
|
ObjectTypeDB::bind_method(_MD("get_max_lines_visible"),&Label::get_max_lines_visible);
|
|
|
|
BIND_CONSTANT( ALIGN_LEFT );
|
|
BIND_CONSTANT( ALIGN_CENTER );
|
|
BIND_CONSTANT( ALIGN_RIGHT );
|
|
BIND_CONSTANT( ALIGN_FILL );
|
|
|
|
BIND_CONSTANT( VALIGN_TOP );
|
|
BIND_CONSTANT( VALIGN_CENTER );
|
|
BIND_CONSTANT( VALIGN_BOTTOM );
|
|
BIND_CONSTANT( VALIGN_FILL );
|
|
|
|
ADD_PROPERTYNZ( PropertyInfo( Variant::STRING, "text",PROPERTY_HINT_MULTILINE_TEXT,"",PROPERTY_USAGE_DEFAULT_INTL), _SCS("set_text"),_SCS("get_text") );
|
|
ADD_PROPERTYNZ( PropertyInfo( Variant::INT, "align", PROPERTY_HINT_ENUM,"Left,Center,Right,Fill" ),_SCS("set_align"),_SCS("get_align") );
|
|
ADD_PROPERTYNZ( PropertyInfo( Variant::INT, "valign", PROPERTY_HINT_ENUM,"Top,Center,Bottom,Fill" ),_SCS("set_valign"),_SCS("get_valign") );
|
|
ADD_PROPERTYNZ( PropertyInfo( Variant::BOOL, "autowrap"),_SCS("set_autowrap"),_SCS("has_autowrap") );
|
|
ADD_PROPERTYNZ( PropertyInfo( Variant::BOOL, "clip_text"),_SCS("set_clip_text"),_SCS("is_clipping_text") );
|
|
ADD_PROPERTYNZ( PropertyInfo( Variant::BOOL, "uppercase"),_SCS("set_uppercase"),_SCS("is_uppercase") );
|
|
ADD_PROPERTY( PropertyInfo( Variant::REAL, "percent_visible", PROPERTY_HINT_RANGE,"0,1,0.001"),_SCS("set_percent_visible"),_SCS("get_percent_visible") );
|
|
ADD_PROPERTY( PropertyInfo( Variant::INT, "lines_skipped", PROPERTY_HINT_RANGE,"0,999,1"),_SCS("set_lines_skipped"),_SCS("get_lines_skipped") );
|
|
ADD_PROPERTY( PropertyInfo( Variant::INT, "max_lines_visible", PROPERTY_HINT_RANGE,"-1,999,1"),_SCS("set_max_lines_visible"),_SCS("get_max_lines_visible") );
|
|
|
|
}
|
|
|
|
Label::Label(const String &p_text) {
|
|
|
|
align=ALIGN_LEFT;
|
|
valign=VALIGN_TOP;
|
|
text="";
|
|
word_cache=NULL;
|
|
word_cache_dirty=true;
|
|
autowrap=false;
|
|
line_count=0;
|
|
set_v_size_flags(0);
|
|
clip=false;
|
|
set_ignore_mouse(true);
|
|
total_char_cache=0;
|
|
visible_chars=-1;
|
|
percent_visible=1;
|
|
lines_skipped=0;
|
|
max_lines_visible=-1;
|
|
set_text(p_text);
|
|
uppercase=false;
|
|
}
|
|
|
|
|
|
Label::~Label() {
|
|
|
|
while (word_cache) {
|
|
|
|
WordCache *current=word_cache;
|
|
word_cache=current->next;
|
|
memdelete( current );
|
|
}
|
|
}
|
|
|
|
|