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rich_text_label.cpp
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/*************************************************************************/
/* rich_text_label.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2021 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 "rich_text_label.h"
#include "core/math/math_defs.h"
#include "core/os/keyboard.h"
#include "core/os/os.h"
#include "modules/regex/regex.h"
#include "scene/scene_string_names.h"
#ifdef TOOLS_ENABLED
#include "editor/editor_scale.h"
#endif
RichTextLabel::Item *RichTextLabel::_get_next_item(Item *p_item, bool p_free) {
if (p_free) {
if (p_item->subitems.size()) {
return p_item->subitems.front()->get();
} else if (!p_item->parent) {
return NULL;
} else if (p_item->E->next()) {
return p_item->E->next()->get();
} else {
//go up until something with a next is found
while (p_item->parent && !p_item->E->next()) {
p_item = p_item->parent;
}
if (p_item->parent)
return p_item->E->next()->get();
else
return NULL;
}
} else {
if (p_item->subitems.size() && p_item->type != ITEM_TABLE) {
return p_item->subitems.front()->get();
} else if (p_item->type == ITEM_FRAME) {
return NULL;
} else if (p_item->E->next()) {
return p_item->E->next()->get();
} else {
//go up until something with a next is found
while (p_item->type != ITEM_FRAME && !p_item->E->next()) {
p_item = p_item->parent;
}
if (p_item->type != ITEM_FRAME)
return p_item->E->next()->get();
else
return NULL;
}
}
return NULL;
}
RichTextLabel::Item *RichTextLabel::_get_prev_item(Item *p_item, bool p_free) {
if (p_free) {
if (p_item->subitems.size()) {
return p_item->subitems.back()->get();
} else if (!p_item->parent) {
return NULL;
} else if (p_item->E->prev()) {
return p_item->E->prev()->get();
} else {
//go back until something with a prev is found
while (p_item->parent && !p_item->E->prev()) {
p_item = p_item->parent;
}
if (p_item->parent)
return p_item->E->prev()->get();
else
return NULL;
}
} else {
if (p_item->subitems.size() && p_item->type != ITEM_TABLE) {
return p_item->subitems.back()->get();
} else if (p_item->type == ITEM_FRAME) {
return NULL;
} else if (p_item->E->prev()) {
return p_item->E->prev()->get();
} else {
//go back until something with a prev is found
while (p_item->type != ITEM_FRAME && !p_item->E->prev()) {
p_item = p_item->parent;
}
if (p_item->type != ITEM_FRAME)
return p_item->E->prev()->get();
else
return NULL;
}
}
return NULL;
}
Rect2 RichTextLabel::_get_text_rect() {
Ref<StyleBox> style = get_stylebox("normal");
return Rect2(style->get_offset(), get_size() - style->get_minimum_size());
}
int RichTextLabel::_process_line(ItemFrame *p_frame, const Vector2 &p_ofs, int &y, int p_width, int p_line, ProcessMode p_mode, const Ref<Font> &p_base_font, const Color &p_base_color, const Color &p_font_color_shadow, bool p_shadow_as_outline, const Point2 &shadow_ofs, const Point2i &p_click_pos, Item **r_click_item, int *r_click_char, bool *r_outside, int p_char_count) {
ERR_FAIL_INDEX_V((int)p_mode, 3, 0);
RID ci;
if (r_outside)
*r_outside = false;
if (p_mode == PROCESS_DRAW) {
ci = get_canvas_item();
if (r_click_item)
*r_click_item = NULL;
}
Line &l = p_frame->lines.write[p_line];
Item *it = l.from;
int line_ofs = 0;
int margin = _find_margin(it, p_base_font);
Align align = _find_align(it);
int line = 0;
int spaces = 0;
int height = get_size().y;
if (p_mode != PROCESS_CACHE) {
ERR_FAIL_INDEX_V(line, l.offset_caches.size(), 0);
line_ofs = l.offset_caches[line];
}
if (p_mode == PROCESS_CACHE) {
l.offset_caches.clear();
l.height_caches.clear();
l.ascent_caches.clear();
l.descent_caches.clear();
l.char_count = 0;
l.minimum_width = 0;
l.maximum_width = 0;
}
int wofs = margin;
int spaces_size = 0;
int align_ofs = 0;
if (p_mode != PROCESS_CACHE && align != ALIGN_FILL)
wofs += line_ofs;
int begin = margin;
Ref<Font> cfont = _find_font(it);
if (cfont.is_null())
cfont = p_base_font;
//line height should be the font height for the first time, this ensures that an empty line will never have zero height and successive newlines are displayed
int line_height = cfont->get_height();
int line_ascent = cfont->get_ascent();
int line_descent = cfont->get_descent();
int backtrack = 0; // for dynamic hidden content.
int nonblank_line_count = 0; //number of nonblank lines as counted during PROCESS_DRAW
Variant meta;
#define RETURN return nonblank_line_count
#define NEW_LINE \
{ \
if (p_mode != PROCESS_CACHE) { \
line++; \
backtrack = 0; \
if (!line_is_blank) { \
nonblank_line_count++; \
} \
line_is_blank = true; \
if (line < l.offset_caches.size()) \
line_ofs = l.offset_caches[line]; \
wofs = margin; \
if (align != ALIGN_FILL) \
wofs += line_ofs; \
} else { \
int used = wofs - margin; \
switch (align) { \
case ALIGN_LEFT: l.offset_caches.push_back(0); break; \
case ALIGN_CENTER: l.offset_caches.push_back(((p_width - margin) - used) / 2); break; \
case ALIGN_RIGHT: l.offset_caches.push_back(((p_width - margin) - used)); break; \
case ALIGN_FILL: l.offset_caches.push_back(line_wrapped ? ((p_width - margin) - used) : 0); break; \
} \
l.height_caches.push_back(line_height); \
l.ascent_caches.push_back(line_ascent); \
l.descent_caches.push_back(line_descent); \
l.space_caches.push_back(spaces); \
} \
line_wrapped = false; \
y += line_height + get_constant(SceneStringNames::get_singleton()->line_separation); \
line_height = 0; \
line_ascent = 0; \
line_descent = 0; \
spaces = 0; \
spaces_size = 0; \
wofs = begin; \
align_ofs = 0; \
if (p_mode != PROCESS_CACHE) { \
lh = line < l.height_caches.size() ? l.height_caches[line] : 1; \
line_ascent = line < l.ascent_caches.size() ? l.ascent_caches[line] : 1; \
line_descent = line < l.descent_caches.size() ? l.descent_caches[line] : 1; \
if (align != ALIGN_FILL) { \
if (line < l.offset_caches.size()) { \
wofs = l.offset_caches[line]; \
} \
} \
} \
if (p_mode == PROCESS_POINTER && r_click_item && p_click_pos.y >= p_ofs.y + y && p_click_pos.y <= p_ofs.y + y + lh && p_click_pos.x < p_ofs.x + wofs) { \
if (r_outside) *r_outside = true; \
*r_click_item = it; \
*r_click_char = rchar; \
RETURN; \
} \
}
#define ENSURE_WIDTH(m_width) \
if (p_mode == PROCESS_CACHE) { \
l.maximum_width = MAX(l.maximum_width, MIN(p_width, wofs + m_width)); \
l.minimum_width = MAX(l.minimum_width, m_width); \
} \
if (wofs - backtrack + m_width > p_width) { \
line_wrapped = true; \
if (p_mode == PROCESS_CACHE) { \
if (spaces > 0) \
spaces -= 1; \
} \
const bool x_in_range = (p_click_pos.x > p_ofs.x + wofs) && (!p_frame->cell || p_click_pos.x < p_ofs.x + p_width); \
if (p_mode == PROCESS_POINTER && r_click_item && p_click_pos.y >= p_ofs.y + y && p_click_pos.y <= p_ofs.y + y + lh && x_in_range) { \
if (r_outside) *r_outside = true; \
*r_click_item = it; \
*r_click_char = rchar; \
RETURN; \
} \
NEW_LINE \
}
#define ADVANCE(m_width) \
{ \
if (p_mode == PROCESS_POINTER && r_click_item && p_click_pos.y >= p_ofs.y + y && p_click_pos.y <= p_ofs.y + y + lh && p_click_pos.x >= p_ofs.x + wofs && p_click_pos.x < p_ofs.x + wofs + m_width) { \
if (r_outside) *r_outside = false; \
*r_click_item = it; \
*r_click_char = rchar; \
RETURN; \
} \
wofs += m_width; \
}
#define CHECK_HEIGHT(m_height) \
if (m_height > line_height) { \
line_height = m_height; \
}
#define YRANGE_VISIBLE(m_top, m_height) \
(m_height > 0 && ((m_top >= 0 && m_top < height) || ((m_top + m_height - 1) >= 0 && (m_top + m_height - 1) < height)))
Color selection_fg;
Color selection_bg;
if (p_mode == PROCESS_DRAW) {
selection_fg = get_color("font_color_selected");
selection_bg = get_color("selection_color");
}
int rchar = 0;
int lh = 0;
bool line_is_blank = true;
bool line_wrapped = false;
int fh = 0;
while (it) {
switch (it->type) {
case ITEM_ALIGN: {
ItemAlign *align_it = static_cast<ItemAlign *>(it);
align = align_it->align;
} break;
case ITEM_INDENT: {
if (it != l.from) {
ItemIndent *indent_it = static_cast<ItemIndent *>(it);
int indent = indent_it->level * tab_size * cfont->get_char_size(' ').width;
margin += indent;
begin += indent;
wofs += indent;
}
} break;
case ITEM_TEXT: {
ItemText *text = static_cast<ItemText *>(it);
Ref<Font> font = _find_font(it);
if (font.is_null())
font = p_base_font;
const CharType *c = text->text.c_str();
const CharType *cf = c;
int ascent = font->get_ascent();
int descent = font->get_descent();
Color color;
Color font_color_shadow;
bool underline = false;
bool strikethrough = false;
ItemFade *fade = NULL;
int it_char_start = p_char_count;
Vector<ItemFX *> fx_stack = Vector<ItemFX *>();
_fetch_item_fx_stack(text, fx_stack);
bool custom_fx_ok = true;
if (p_mode == PROCESS_DRAW) {
color = _find_color(text, p_base_color);
font_color_shadow = _find_color(text, p_font_color_shadow);
if (_find_underline(text) || (_find_meta(text, &meta) && underline_meta)) {
underline = true;
} else if (_find_strikethrough(text)) {
strikethrough = true;
}
Item *fade_item = it;
while (fade_item) {
if (fade_item->type == ITEM_FADE) {
fade = static_cast<ItemFade *>(fade_item);
break;
}
fade_item = fade_item->parent;
}
} else if (p_mode == PROCESS_CACHE) {
l.char_count += text->text.length();
}
bool just_breaked_in_middle = false;
rchar = 0;
FontDrawer drawer(font, Color(1, 1, 1));
while (*c) {
int end = 0;
int w = 0;
int fw = 0;
bool was_separatable = false;
lh = 0;
if (p_mode != PROCESS_CACHE) {
lh = line < l.height_caches.size() ? l.height_caches[line] : 1;
line_ascent = line < l.ascent_caches.size() ? l.ascent_caches[line] : 1;
line_descent = line < l.descent_caches.size() ? l.descent_caches[line] : 1;
}
while (c[end] != 0 && !(end && c[end - 1] == ' ' && c[end] != ' ')) {
int cw = font->get_char_size(c[end], c[end + 1]).width;
if (c[end] == '\t') {
cw = tab_size * font->get_char_size(' ').width;
}
if (end > 0 && w + cw + begin > p_width) {
break; //don't allow lines longer than assigned width
}
// For info about the unicode range, see Label::regenerate_word_cache.
const CharType current = c[end];
const bool separatable = (current >= 0x2E08 && current <= 0x9FFF) || // CJK scripts and symbols.
(current >= 0xAC00 && current <= 0xD7FF) || // Hangul Syllables and Hangul Jamo Extended-B.
(current >= 0xF900 && current <= 0xFAFF) || // CJK Compatibility Ideographs.
(current >= 0xFE30 && current <= 0xFE4F) || // CJK Compatibility Forms.
(current >= 0xFF65 && current <= 0xFF9F) || // Halfwidth forms of katakana
(current >= 0xFFA0 && current <= 0xFFDC) || // Halfwidth forms of compatibility jamo characters for Hangul
(current >= 0x20000 && current <= 0x2FA1F) || // CJK Unified Ideographs Extension B ~ F and CJK Compatibility Ideographs Supplement.
(current >= 0x30000 && current <= 0x3134F); // CJK Unified Ideographs Extension G.
const bool long_separatable = separatable && (wofs - backtrack + w + cw > p_width);
const bool separation_changed = end > 0 && was_separatable != separatable;
if (!just_breaked_in_middle && (long_separatable || separation_changed)) {
just_breaked_in_middle = true;
break;
}
was_separatable = separatable;
just_breaked_in_middle = false;
w += cw;
fw += cw;
end++;
}
CHECK_HEIGHT(fh);
ENSURE_WIDTH(w);
line_ascent = MAX(line_ascent, ascent);
line_descent = MAX(line_descent, descent);
fh = line_ascent + line_descent;
if (end && c[end - 1] == ' ') {
if (p_mode == PROCESS_CACHE) {
spaces_size += font->get_char_size(' ').width;
} else if (align == ALIGN_FILL) {
int ln = MIN(l.offset_caches.size() - 1, line);
if (l.space_caches[ln]) {
align_ofs = spaces * l.offset_caches[ln] / l.space_caches[ln];
}
}
spaces++;
}
{
int ofs = 0 - backtrack;
for (int i = 0; i < end; i++) {
int pofs = wofs + ofs;
if (p_mode == PROCESS_POINTER && r_click_char && p_click_pos.y >= p_ofs.y + y && p_click_pos.y <= p_ofs.y + y + lh) {
int cw = font->get_char_size(c[i], c[i + 1]).x;
if (c[i] == '\t') {
cw = tab_size * font->get_char_size(' ').width;
}
if (p_click_pos.x - cw / 2 > p_ofs.x + align_ofs + pofs) {
rchar = int((&c[i]) - cf);
}
ofs += cw;
} else if (p_mode == PROCESS_DRAW) {
bool selected = false;
Color fx_color = Color(color);
Point2 fx_offset;
CharType fx_char = c[i];
if (selection.active) {
int cofs = (&c[i]) - cf;
if ((text->index > selection.from->index || (text->index == selection.from->index && cofs >= selection.from_char)) && (text->index < selection.to->index || (text->index == selection.to->index && cofs <= selection.to_char))) {
selected = true;
}
}
int cw = 0;
int c_item_offset = p_char_count - it_char_start;
float faded_visibility = 1.0f;
if (fade) {
if (c_item_offset >= fade->starting_index) {
faded_visibility -= (float)(c_item_offset - fade->starting_index) / (float)fade->length;
faded_visibility = faded_visibility < 0.0f ? 0.0f : faded_visibility;
}
fx_color.a = faded_visibility;
}
bool visible = visible_characters < 0 || ((p_char_count < visible_characters && YRANGE_VISIBLE(y + lh - line_descent - line_ascent, line_ascent + line_descent)) &&
faded_visibility > 0.0f);
const bool previously_visible = visible;
for (int j = 0; j < fx_stack.size(); j++) {
ItemFX *item_fx = fx_stack[j];
if (item_fx->type == ITEM_CUSTOMFX && custom_fx_ok) {
ItemCustomFX *item_custom = static_cast<ItemCustomFX *>(item_fx);
Ref<CharFXTransform> charfx = item_custom->char_fx_transform;
Ref<RichTextEffect> custom_effect = item_custom->custom_effect;
if (!custom_effect.is_null()) {
charfx->elapsed_time = item_custom->elapsed_time;
charfx->relative_index = c_item_offset;
charfx->absolute_index = p_char_count;
charfx->visibility = visible;
charfx->offset = fx_offset;
charfx->color = fx_color;
charfx->character = fx_char;
bool effect_status = custom_effect->_process_effect_impl(charfx);
custom_fx_ok = effect_status;
fx_offset += charfx->offset;
fx_color = charfx->color;
visible &= charfx->visibility;
fx_char = charfx->character;
}
} else if (item_fx->type == ITEM_SHAKE) {
ItemShake *item_shake = static_cast<ItemShake *>(item_fx);
uint64_t char_current_rand = item_shake->offset_random(c_item_offset);
uint64_t char_previous_rand = item_shake->offset_previous_random(c_item_offset);
uint64_t max_rand = 2147483647;
double current_offset = Math::range_lerp(char_current_rand % max_rand, 0, max_rand, 0.0f, 2.f * (float)Math_PI);
double previous_offset = Math::range_lerp(char_previous_rand % max_rand, 0, max_rand, 0.0f, 2.f * (float)Math_PI);
double n_time = (double)(item_shake->elapsed_time / (0.5f / item_shake->rate));
n_time = (n_time > 1.0) ? 1.0 : n_time;
fx_offset += Point2(Math::lerp(Math::sin(previous_offset),
Math::sin(current_offset),
n_time),
Math::lerp(Math::cos(previous_offset),
Math::cos(current_offset),
n_time)) *
(float)item_shake->strength / 10.0f;
} else if (item_fx->type == ITEM_WAVE) {
ItemWave *item_wave = static_cast<ItemWave *>(item_fx);
double value = Math::sin(item_wave->frequency * item_wave->elapsed_time + ((p_ofs.x + pofs) / 50)) * (item_wave->amplitude / 10.0f);
fx_offset += Point2(0, 1) * value;
} else if (item_fx->type == ITEM_TORNADO) {
ItemTornado *item_tornado = static_cast<ItemTornado *>(item_fx);
double torn_x = Math::sin(item_tornado->frequency * item_tornado->elapsed_time + ((p_ofs.x + pofs) / 50)) * (item_tornado->radius);
double torn_y = Math::cos(item_tornado->frequency * item_tornado->elapsed_time + ((p_ofs.x + pofs) / 50)) * (item_tornado->radius);
fx_offset += Point2(torn_x, torn_y);
} else if (item_fx->type == ITEM_RAINBOW) {
ItemRainbow *item_rainbow = static_cast<ItemRainbow *>(item_fx);
fx_color = fx_color.from_hsv(item_rainbow->frequency * (item_rainbow->elapsed_time + ((p_ofs.x + pofs) / 50)),
item_rainbow->saturation,
item_rainbow->value,
fx_color.a);
}
}
if (visible)
line_is_blank = false;
if (c[i] == '\t')
visible = false;
if (visible) {
if (selected) {
cw = font->get_char_size(fx_char, c[i + 1]).x;
draw_rect(Rect2(p_ofs.x + pofs, p_ofs.y + y, cw, lh), selection_bg);
}
if (p_font_color_shadow.a > 0) {
float x_ofs_shadow = align_ofs + pofs;
float y_ofs_shadow = y + lh - line_descent;
font->draw_char(ci, Point2(x_ofs_shadow, y_ofs_shadow) + shadow_ofs + fx_offset, fx_char, c[i + 1], p_font_color_shadow);
if (p_shadow_as_outline) {
font->draw_char(ci, Point2(x_ofs_shadow, y_ofs_shadow) + Vector2(-shadow_ofs.x, shadow_ofs.y) + fx_offset, fx_char, c[i + 1], p_font_color_shadow);
font->draw_char(ci, Point2(x_ofs_shadow, y_ofs_shadow) + Vector2(shadow_ofs.x, -shadow_ofs.y) + fx_offset, fx_char, c[i + 1], p_font_color_shadow);
font->draw_char(ci, Point2(x_ofs_shadow, y_ofs_shadow) + Vector2(-shadow_ofs.x, -shadow_ofs.y) + fx_offset, fx_char, c[i + 1], p_font_color_shadow);
}
}
if (selected) {
drawer.draw_char(ci, p_ofs + Point2(align_ofs + pofs, y + lh - line_descent), fx_char, c[i + 1], override_selected_font_color ? selection_fg : fx_color);
} else {
cw = drawer.draw_char(ci, p_ofs + Point2(align_ofs + pofs, y + lh - line_descent) + fx_offset, fx_char, c[i + 1], fx_color);
}
} else if (previously_visible && c[i] != '\t') {
backtrack += font->get_char_size(fx_char, c[i + 1]).x;
}
p_char_count++;
if (c[i] == '\t') {
cw = tab_size * font->get_char_size(' ').width;
backtrack = MAX(0, backtrack - cw);
}
ofs += cw;
}
}
if (underline) {
Color uc = color;
uc.a *= 0.5;
int uy = y + lh - line_descent + 2;
float underline_width = 1.0;
#ifdef TOOLS_ENABLED
underline_width *= EDSCALE;
#endif
VS::get_singleton()->canvas_item_add_line(ci, p_ofs + Point2(align_ofs + wofs, uy), p_ofs + Point2(align_ofs + wofs + w, uy), uc, underline_width);
} else if (strikethrough) {
Color uc = color;
uc.a *= 0.5;
int uy = y + lh - (line_ascent + line_descent) / 2;
float strikethrough_width = 1.0;
#ifdef TOOLS_ENABLED
strikethrough_width *= EDSCALE;
#endif
VS::get_singleton()->canvas_item_add_line(ci, p_ofs + Point2(align_ofs + wofs, uy), p_ofs + Point2(align_ofs + wofs + w, uy), uc, strikethrough_width);
}
}
ADVANCE(fw);
CHECK_HEIGHT(fh); //must be done somewhere
c = &c[end];
}
} break;
case ITEM_IMAGE: {
lh = 0;
if (p_mode != PROCESS_CACHE)
lh = line < l.height_caches.size() ? l.height_caches[line] : 1;
else
l.char_count += 1; //images count as chars too
ItemImage *img = static_cast<ItemImage *>(it);
Ref<Font> font = _find_font(it);
if (font.is_null())
font = p_base_font;
if (p_mode == PROCESS_POINTER && r_click_char)
*r_click_char = 0;
ENSURE_WIDTH(img->size.width);
bool visible = visible_characters < 0 || (p_char_count < visible_characters && YRANGE_VISIBLE(y + lh - font->get_descent() - img->size.height, img->size.height));
if (visible)
line_is_blank = false;
if (p_mode == PROCESS_DRAW && visible) {
img->image->draw_rect(ci, Rect2(p_ofs + Point2(align_ofs + wofs, y + lh - font->get_descent() - img->size.height), img->size));
}
p_char_count++;
ADVANCE(img->size.width);
CHECK_HEIGHT((img->size.height + font->get_descent()));
} break;
case ITEM_NEWLINE: {
lh = 0;
if (p_mode != PROCESS_CACHE) {
lh = line < l.height_caches.size() ? l.height_caches[line] : 1;
line_is_blank = true;
}
} break;
case ITEM_TABLE: {
lh = 0;
ItemTable *table = static_cast<ItemTable *>(it);
int hseparation = get_constant("table_hseparation");
int vseparation = get_constant("table_vseparation");
Color ccolor = _find_color(table, p_base_color);
Vector2 draw_ofs = Point2(wofs, y);
Color font_color_shadow = get_color("font_color_shadow");
bool use_outline = get_constant("shadow_as_outline");
Point2 shadow_ofs2(get_constant("shadow_offset_x"), get_constant("shadow_offset_y"));
if (p_mode == PROCESS_CACHE) {
int idx = 0;
//set minimums to zero
for (int i = 0; i < table->columns.size(); i++) {
table->columns.write[i].min_width = 0;
table->columns.write[i].max_width = 0;
table->columns.write[i].width = 0;
}
//compute minimum width for each cell
const int available_width = p_width - hseparation * (table->columns.size() - 1) - wofs;
for (List<Item *>::Element *E = table->subitems.front(); E; E = E->next()) {
ERR_CONTINUE(E->get()->type != ITEM_FRAME); //children should all be frames
ItemFrame *frame = static_cast<ItemFrame *>(E->get());
int column = idx % table->columns.size();
int ly = 0;
for (int i = 0; i < frame->lines.size(); i++) {
_process_line(frame, Point2(), ly, available_width, i, PROCESS_CACHE, cfont, Color(), font_color_shadow, use_outline, shadow_ofs2);
table->columns.write[column].min_width = MAX(table->columns[column].min_width, frame->lines[i].minimum_width);
table->columns.write[column].max_width = MAX(table->columns[column].max_width, frame->lines[i].maximum_width);
}
idx++;
}
//compute available width and total ratio (for expanders)
int total_ratio = 0;
int remaining_width = available_width;
table->total_width = hseparation;
for (int i = 0; i < table->columns.size(); i++) {
remaining_width -= table->columns[i].min_width;
if (table->columns[i].max_width > table->columns[i].min_width)
table->columns.write[i].expand = true;
if (table->columns[i].expand)
total_ratio += table->columns[i].expand_ratio;
}
//assign actual widths
for (int i = 0; i < table->columns.size(); i++) {
table->columns.write[i].width = table->columns[i].min_width;
if (table->columns[i].expand && total_ratio > 0)
table->columns.write[i].width += table->columns[i].expand_ratio * remaining_width / total_ratio;
table->total_width += table->columns[i].width + hseparation;
}
//resize to max_width if needed and distribute the remaining space
bool table_need_fit = true;
while (table_need_fit) {
table_need_fit = false;
//fit slim
for (int i = 0; i < table->columns.size(); i++) {
if (!table->columns[i].expand)
continue;
int dif = table->columns[i].width - table->columns[i].max_width;
if (dif > 0) {
table_need_fit = true;
table->columns.write[i].width = table->columns[i].max_width;
table->total_width -= dif;
total_ratio -= table->columns[i].expand_ratio;
}
}
//grow
remaining_width = available_width - table->total_width;
if (remaining_width > 0 && total_ratio > 0) {
for (int i = 0; i < table->columns.size(); i++) {
if (table->columns[i].expand) {
int dif = table->columns[i].max_width - table->columns[i].width;
if (dif > 0) {
int slice = table->columns[i].expand_ratio * remaining_width / total_ratio;
int incr = MIN(dif, slice);
table->columns.write[i].width += incr;
table->total_width += incr;
}
}
}
}
}
//compute caches properly again with the right width
idx = 0;
for (List<Item *>::Element *E = table->subitems.front(); E; E = E->next()) {
ERR_CONTINUE(E->get()->type != ITEM_FRAME); //children should all be frames
ItemFrame *frame = static_cast<ItemFrame *>(E->get());
int column = idx % table->columns.size();
for (int i = 0; i < frame->lines.size(); i++) {
int ly = 0;
_process_line(frame, Point2(), ly, table->columns[column].width, i, PROCESS_CACHE, cfont, Color(), font_color_shadow, use_outline, shadow_ofs2);
frame->lines.write[i].height_cache = ly; //actual height
frame->lines.write[i].height_accum_cache = ly; //actual height
}
idx++;
}
}
Point2 offset(align_ofs + hseparation, vseparation);
int row_height = 0;
//draw using computed caches
int idx = 0;
for (List<Item *>::Element *E = table->subitems.front(); E; E = E->next()) {
ERR_CONTINUE(E->get()->type != ITEM_FRAME); //children should all be frames
ItemFrame *frame = static_cast<ItemFrame *>(E->get());
int column = idx % table->columns.size();
int ly = 0;
int yofs = 0;
int lines_h = frame->lines[frame->lines.size() - 1].height_accum_cache - (frame->lines[0].height_accum_cache - frame->lines[0].height_cache);
int lines_ofs = p_ofs.y + offset.y + draw_ofs.y;
bool visible = lines_ofs < get_size().height && lines_ofs + lines_h >= 0;
if (visible)
line_is_blank = false;
for (int i = 0; i < frame->lines.size(); i++) {
if (visible) {
if (p_mode == PROCESS_DRAW) {
nonblank_line_count += _process_line(frame, p_ofs + offset + draw_ofs + Vector2(0, yofs), ly, table->columns[column].width, i, PROCESS_DRAW, cfont, ccolor, font_color_shadow, use_outline, shadow_ofs2);
} else if (p_mode == PROCESS_POINTER) {
_process_line(frame, p_ofs + offset + draw_ofs + Vector2(0, yofs), ly, table->columns[column].width, i, PROCESS_POINTER, cfont, ccolor, font_color_shadow, use_outline, shadow_ofs2, p_click_pos, r_click_item, r_click_char, r_outside);
if (r_click_item && *r_click_item) {
RETURN; // exit early
}
}
}
yofs += frame->lines[i].height_cache;
if (p_mode == PROCESS_CACHE) {
frame->lines.write[i].height_accum_cache = offset.y + draw_ofs.y + frame->lines[i].height_cache;
}
}
row_height = MAX(yofs, row_height);
offset.x += table->columns[column].width + hseparation;
// Add row height after last column of the row or last cell of the table.
if (column == table->columns.size() - 1 || E->next() == NULL) {
offset.y += row_height + vseparation;
offset.x = hseparation;
row_height = 0;
}
idx++;
}
int total_height = offset.y;
if (row_height) {
total_height = row_height + vseparation;
}
ADVANCE(table->total_width);
CHECK_HEIGHT(total_height);
} break;
default: {
}
}
Item *itp = it;
it = _get_next_item(it);
if (it && (p_line + 1 < p_frame->lines.size()) && p_frame->lines[p_line + 1].from == it) {
if (p_mode == PROCESS_POINTER && r_click_item && p_click_pos.y >= p_ofs.y + y && p_click_pos.y <= p_ofs.y + y + lh) {
//went to next line, but pointer was on the previous one
if (r_outside) *r_outside = true;
*r_click_item = itp;
*r_click_char = rchar;
RETURN;
}
break;
}
}
NEW_LINE;
RETURN;
#undef RETURN
#undef NEW_LINE
#undef ENSURE_WIDTH
#undef ADVANCE
#undef CHECK_HEIGHT
}
void RichTextLabel::_scroll_changed(double) {
if (updating_scroll)
return;
if (scroll_follow && vscroll->get_value() >= (vscroll->get_max() - vscroll->get_page()))
scroll_following = true;
else
scroll_following = false;
scroll_updated = true;
update();
}
void RichTextLabel::_update_scroll() {
int total_height = get_content_height();
bool exceeds = total_height > get_size().height && scroll_active;
if (exceeds != scroll_visible) {
if (exceeds) {
scroll_visible = true;
scroll_w = vscroll->get_combined_minimum_size().width;
vscroll->show();
vscroll->set_anchor_and_margin(MARGIN_LEFT, ANCHOR_END, -scroll_w);
} else {
scroll_visible = false;
scroll_w = 0;
vscroll->hide();
}
main->first_invalid_line = 0; //invalidate ALL
_validate_line_caches(main);
}
}
void RichTextLabel::_update_fx(RichTextLabel::ItemFrame *p_frame, float p_delta_time) {
Item *it = p_frame;
while (it) {
ItemFX *ifx = NULL;
if (it->type == ITEM_CUSTOMFX || it->type == ITEM_SHAKE || it->type == ITEM_WAVE || it->type == ITEM_TORNADO || it->type == ITEM_RAINBOW) {
ifx = static_cast<ItemFX *>(it);
}
if (!ifx) {
it = _get_next_item(it, true);
continue;
}
ifx->elapsed_time += p_delta_time;
ItemShake *shake = NULL;
if (it->type == ITEM_SHAKE) {
shake = static_cast<ItemShake *>(it);
}
if (shake) {
bool cycle = (shake->elapsed_time > (1.0f / shake->rate));
if (cycle) {
shake->elapsed_time -= (1.0f / shake->rate);
shake->reroll_random();
}
}
it = _get_next_item(it, true);
}
}
void RichTextLabel::_notification(int p_what) {
switch (p_what) {
case NOTIFICATION_MOUSE_EXIT: {
if (meta_hovering) {
meta_hovering = NULL;
emit_signal("meta_hover_ended", current_meta);
current_meta = false;
update();
}
} break;
case NOTIFICATION_RESIZED: {
main->first_invalid_line = 0; //invalidate ALL
update();
} break;
case NOTIFICATION_THEME_CHANGED:
case NOTIFICATION_ENTER_TREE: {
if (bbcode != "")
set_bbcode(bbcode);
main->first_invalid_line = 0; //invalidate ALL
update();
} break;
case NOTIFICATION_DRAW: {