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open_toontown_panda3d/panda/src/text/textNode.cxx

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// Filename: textNode.cxx
// Created by: drose (12May99)
//
////////////////////////////////////////////////////////////////////
//
// PANDA 3D SOFTWARE
// Copyright (c) 2001, Disney Enterprises, Inc. All rights reserved
//
// All use of this software is subject to the terms of the Panda 3d
// Software license. You should have received a copy of this license
// along with this source code; you will also find a current copy of
// the license at http://www.panda3d.org/license.txt .
//
// To contact the maintainers of this program write to
// panda3d@yahoogroups.com .
//
////////////////////////////////////////////////////////////////////
#include "textNode.h"
#include "textGlyph.h"
#include "stringDecoder.h"
#include "config_text.h"
#include "compose_matrix.h"
#include "transformTransition.h"
#include "colorTransition.h"
#include "geom.h"
#include "geomprimitives.h"
#include "renderRelation.h"
#include "notify.h"
#include "sceneGraphReducer.h"
#include "geomBinTransition.h"
#include "indent.h"
#include "stdio.h"
#include "ctype.h"
////////////////////////////////////////////////////////////////////
// Static variables
////////////////////////////////////////////////////////////////////
TypeHandle TextNode::_type_handle;
TextNode::Encoding TextNode::_default_encoding;
////////////////////////////////////////////////////////////////////
// Function: TextNode::Constructor
// Access: Published
// Description:
////////////////////////////////////////////////////////////////////
TextNode::
TextNode(const string &name) : NamedNode(name) {
_encoding = _default_encoding;
_slant = 0.0f;
_flags = 0;
_align = A_left;
_wordwrap_width = 1.0f;
_text_color.set(1.0f, 1.0f, 1.0f, 1.0f);
_frame_color.set(1.0f, 1.0f, 1.0f, 1.0f);
_card_color.set(1.0f, 1.0f, 1.0f, 1.0f);
_shadow_color.set(1.0f, 1.0f, 1.0f, 1.0f);
_frame_width = 1.0f;
_frame_ul.set(0.0f, 0.0f);
_frame_lr.set(0.0f, 0.0f);
_card_ul.set(0.0f, 0.0f);
_card_lr.set(0.0f, 0.0f);
_shadow_offset.set(0.0f, 0.0f);
_draw_order = 1;
_transform = LMatrix4f::ident_mat();
_coordinate_system = CS_default;
_ul2d.set(0.0f, 0.0f);
_lr2d.set(0.0f, 0.0f);
_ul3d.set(0.0f, 0.0f, 0.0f);
_lr3d.set(0.0f, 0.0f, 0.0f);
_num_rows = 0;
_freeze_level = 0;
_needs_rebuild = false;
}
////////////////////////////////////////////////////////////////////
// Function: TextNode::Destructor
// Access: Published
// Description:
////////////////////////////////////////////////////////////////////
TextNode::
~TextNode() {
}
////////////////////////////////////////////////////////////////////
// Function: TextNode::set_text
// Access: Published
// Description: Changes the text that is displayed under the
// TextNode.
////////////////////////////////////////////////////////////////////
void TextNode::
set_text(const string &text) {
_text = text;
_wtext = decode_text(text);
rebuild(true);
}
////////////////////////////////////////////////////////////////////
// Function: TextNode::wordwrap_to
// Access: Published
// Description: Inserts newlines into the given text at the
// appropriate places in order to make each line be the
// longest possible line that is not longer than
// wordwrap_width (and does not break any words, if
// possible). Returns the new string.
////////////////////////////////////////////////////////////////////
string TextNode::
wordwrap_to(const string &text, float wordwrap_width,
bool preserve_trailing_whitespace) const {
nassertr(_font != (TextFont *)NULL, text);
wstring decoded = decode_text(text);
wstring wrapped =
_font->wordwrap_to(decoded, wordwrap_width, preserve_trailing_whitespace);
return encode_wtext(wrapped);
}
////////////////////////////////////////////////////////////////////
// Function: TextNode::write
// Access: Published, Virtual
// Description:
////////////////////////////////////////////////////////////////////
void TextNode::
write(ostream &out, int indent_level) const {
indent(out, indent_level)
<< "TextNode " << get_name() << "\n";
if (_font != (TextFont *)NULL) {
indent(out, indent_level + 2)
<< "with font " << _font->get_name() << "\n";
}
if (has_text_color()) {
indent(out, indent_level + 2)
<< "text color is " << _text_color << "\n";
} else {
indent(out, indent_level + 2)
<< "text color is unchanged from source\n";
}
indent(out, indent_level + 2)
<< "alignment is ";
switch (_align) {
case A_left:
out << "A_left\n";
break;
case A_right:
out << "A_right\n";
break;
case A_center:
out << "A_center\n";
break;
}
if (has_wordwrap()) {
indent(out, indent_level + 2)
<< "Word-wrapping at " << _wordwrap_width << " units.\n";
}
if (has_frame()) {
indent(out, indent_level + 2)
<< "frame of color " << _frame_color << " at "
<< get_frame_as_set() << " line width " << _frame_width << "\n";
if (get_frame_corners()) {
indent(out, indent_level + 2)
<< "frame corners are enabled\n";
}
if (is_frame_as_margin()) {
indent(out, indent_level + 2)
<< "frame coordinates are specified as margin; actual frame is:\n"
<< get_frame_actual() << "\n";
} else {
indent(out, indent_level + 2)
<< "frame coordinates are actual\n";
}
}
if (has_card()) {
indent(out, indent_level + 2)
<< "card of color " << _card_color << " at "
<< get_card_as_set() << "\n";
if (is_card_as_margin()) {
indent(out, indent_level + 2)
<< "card coordinates are specified as margin; actual card is:\n"
<< get_card_actual() << "\n";
} else {
indent(out, indent_level + 2)
<< "card coordinates are actual\n";
}
}
if (has_shadow()) {
indent(out, indent_level + 2)
<< "shadow of color " << _shadow_color << " at "
<< _shadow_offset << "\n";
}
if (has_bin()) {
indent(out, indent_level + 2)
<< "bin is " << _bin << "\n";
}
indent(out, indent_level + 2)
<< "draw order is " << _draw_order << ", "
<< _draw_order + 1 << ", " << _draw_order + 2 << "\n";
LVecBase3f scale, hpr, trans;
if (decompose_matrix(_transform, scale, hpr, trans, _coordinate_system)) {
indent(out, indent_level + 2)
<< "transform is:\n"
<< " scale: " << scale << "\n"
<< " hpr: " << hpr << "\n"
<< " trans: " << hpr << "\n";
} else {
indent(out, indent_level + 2)
<< "transform is:\n" << _transform;
}
indent(out, indent_level + 2)
<< "in coordinate system " << _coordinate_system << "\n";
indent(out, indent_level + 2)
<< "\ntext is " << _text << "\n";
}
////////////////////////////////////////////////////////////////////
// Function: TextNode::generate
// Access: Published
// Description: Generates the text, according to the parameters
// indicated within the TextNode, and returns a Node
// that may be parented within the tree to represent it.
////////////////////////////////////////////////////////////////////
PT_Node TextNode::
generate() {
if (text_cat.is_debug()) {
text_cat.debug()
<< "Rebuilding " << *this << " with '" << _text << "'\n";
}
// The strategy here will be to assemble together a bunch of
// letters, instanced from the letter hierarchy of font_def, into
// our own little hierarchy.
// There will be one root over the whole text block, that
// contains the transform passed in. Under this root there will be
// another node for each row, that moves the row into the right place
// horizontally and vertically, and for each row, there is another
// node for each character.
_ul2d.set(0.0f, 0.0f);
_lr2d.set(0.0f, 0.0f);
_ul3d.set(0.0f, 0.0f, 0.0f);
_lr3d.set(0.0f, 0.0f, 0.0f);
_num_rows = 0;
// Now build a new sub-tree for all the text components.
PT_Node root = new NamedNode(_text);
if (_text.empty() || _font.is_null()) {
return root;
}
PT_Node sub_root = new NamedNode();
RenderRelation *root_arc = new RenderRelation(root, sub_root);
// Compute the overall text transform matrix. We build the text in
// a Z-up coordinate system and then convert it to whatever the user
// asked for.
LMatrix4f mat =
LMatrix4f::convert_mat(CS_zup_right, _coordinate_system) *
_transform;
root_arc->set_transition(new TransformTransition(mat));
wstring wtext = _wtext;
if (has_wordwrap()) {
wtext = _font->wordwrap_to(wtext, _wordwrap_width, false);
}
// Assemble the text.
LVector2f ul, lr;
int num_rows = 0;
PT_Node text_root = assemble_text(wtext.begin(), wtext.end(), ul, lr, num_rows);
RenderRelation *text_arc =
new RenderRelation(sub_root, text_root, _draw_order + 2);
if (has_text_color()) {
text_arc->set_transition(new ColorTransition(_text_color));
if (_text_color[3] != 1.0) {
text_arc->set_transition
(new TransparencyTransition(TransparencyProperty::M_alpha));
}
}
if (has_bin()) {
text_arc->set_transition
(new GeomBinTransition(_bin, _draw_order + 2));
}
// Save the bounding-box information about the text in a form
// friendly to the user.
_num_rows = num_rows;
_ul2d = ul;
_lr2d = lr;
_ul3d.set(ul[0], 0.0f, ul[1]);
_lr3d.set(lr[0], 0.0f, lr[1]);
_ul3d = _ul3d * _transform;
_lr3d = _lr3d * _transform;
// Now deal with all the decorations.
if (has_shadow()) {
// Make a shadow by instancing the text behind itself.
// For now, the depth offset is 0.0 because we don't expect to see
// text with shadows in the 3-d world that aren't decals. Maybe
// this will need to be addressed in the future.
LMatrix4f offset =
LMatrix4f::translate_mat(_shadow_offset[0], 0.0f, -_shadow_offset[1]);
RenderRelation *shadow_arc =
new RenderRelation(sub_root, text_root, _draw_order + 1);
shadow_arc->set_transition(new TransformTransition(offset));
shadow_arc->set_transition(new ColorTransition(_shadow_color));
if (_shadow_color[3] != 1.0f) {
shadow_arc->set_transition
(new TransparencyTransition(TransparencyProperty::M_alpha));
}
if (has_bin()) {
shadow_arc->set_transition
(new GeomBinTransition(_bin, _draw_order + 1));
}
}
if (has_frame()) {
PT_Node frame_root = make_frame();
RenderRelation *frame_arc =
new RenderRelation(sub_root, frame_root, _draw_order + 1);
frame_arc->set_transition(new ColorTransition(_frame_color));
if (_frame_color[3] != 1.0f) {
frame_arc->set_transition
(new TransparencyTransition(TransparencyProperty::M_alpha));
}
if (has_bin()) {
frame_arc->set_transition
(new GeomBinTransition(_bin, _draw_order + 1));
}
}
if (has_card()) {
PT_Node card_root;
if (has_card_border())
card_root = make_card_with_border();
else
card_root = make_card();
RenderRelation *card_arc =
new RenderRelation(sub_root, card_root, _draw_order);
card_arc->set_transition(new ColorTransition(_card_color));
if (_card_color[3] != 1.0f) {
card_arc->set_transition
(new TransparencyTransition(TransparencyProperty::M_alpha));
}
if (has_card_texture()) {
card_arc->set_transition(new TextureTransition(_card_texture));
}
if (has_bin()) {
card_arc->set_transition
(new GeomBinTransition(_bin, _draw_order));
}
}
// Now flatten our hierarchy to get rid of the transforms we put in,
// applying them to the vertices.
if (text_flatten) {
SceneGraphReducer gr(RenderRelation::get_class_type());
gr.apply_transitions(root_arc);
gr.flatten(root, true);
}
return root;
}
////////////////////////////////////////////////////////////////////
// Function: TextNode::encode_wchar
// Access: Public
// Description: Encodes a single wide char into a one-, two-, or
// three-byte string, according to the current encoding
// system in effect.
////////////////////////////////////////////////////////////////////
string TextNode::
encode_wchar(wchar_t ch) const {
switch (_encoding) {
case E_iso8859:
if (isascii(ch)) {
return string(1, (char)ch);
} else {
return ".";
}
case E_utf8:
if (ch < 0x80) {
return string(1, (char)ch);
} else if (ch < 0x800) {
return
string(1, (char)(ch >> 6) | 0xc0) +
string(1, (char)(ch & 0x3f) | 0x80);
} else {
return
string(1, (char)(ch >> 12) | 0xe0) +
string(1, (char)((ch >> 6) & 0x3f) | 0x80) +
string(1, (char)(ch & 0x3f) | 0x80);
}
case E_unicode:
return
string(1, (char)(ch >> 8)) +
string(1, (char)(ch & 0xff));
}
}
////////////////////////////////////////////////////////////////////
// Function: TextNode::encode_wtext
// Access: Public
// Description: Encodes a wide-text string into a single-char string,
// accoding to the current encoding.
////////////////////////////////////////////////////////////////////
string TextNode::
encode_wtext(const wstring &text) const {
string result;
for (wstring::const_iterator pi = text.begin(); pi != text.end(); ++pi) {
result += encode_wchar(*pi);
}
return result;
}
////////////////////////////////////////////////////////////////////
// Function: TextNode::decode_text
// Access: Public
// Description: Returns the given wstring decoded to a single-byte
// string, via the current encoding system.
////////////////////////////////////////////////////////////////////
wstring TextNode::
decode_text(const string &text) const {
switch (_encoding) {
case E_utf8:
{
StringUtf8Decoder decoder(text);
return decode_text_impl(decoder);
}
break;
case E_unicode:
{
StringUnicodeDecoder decoder(text);
return decode_text_impl(decoder);
}
break;
case E_iso8859:
default:
{
StringDecoder decoder(text);
return decode_text_impl(decoder);
}
};
}
////////////////////////////////////////////////////////////////////
// Function: TextNode::decode_text_impl
// Access: Private
// Description: Decodes the eight-bit stream from the indicated
// decoder, storing the decoded unicode characters in
// _wtext.
////////////////////////////////////////////////////////////////////
wstring TextNode::
decode_text_impl(StringDecoder &decoder) const {
wstring result;
bool expand_amp = get_expand_amp();
wchar_t character = decoder.get_next_character();
while (!decoder.is_eof()) {
if (character == '&' && expand_amp) {
// An ampersand in expand_amp mode is treated as an escape
// character.
character = expand_amp_sequence(decoder);
}
result += character;
character = decoder.get_next_character();
}
return result;
}
////////////////////////////////////////////////////////////////////
// Function: TextNode::expand_amp_sequence
// Access: Private
// Description: Given that we have just read an ampersand from the
// StringDecoder, and that we have expand_amp in effect
// and are therefore expected to expand the sequence
// that this ampersand begins into a single unicode
// character, do the expansion and return the character.
////////////////////////////////////////////////////////////////////
int TextNode::
expand_amp_sequence(StringDecoder &decoder) const {
int result = 0;
int character = decoder.get_next_character();
if (!decoder.is_eof() && character == '#') {
// An explicit numeric sequence: &#nnn;
result = 0;
character = decoder.get_next_character();
while (!decoder.is_eof() && character < 128 && isdigit(character)) {
result = (result * 10) + (character - '0');
character = decoder.get_next_character();
}
if (character != ';') {
// Invalid sequence.
return 0;
}
return result;
}
string sequence;
// Some non-numeric sequence.
while (!decoder.is_eof() && character < 128 && isalpha(character)) {
sequence += character;
character = decoder.get_next_character();
}
if (character != ';') {
// Invalid sequence.
return 0;
}
static const struct {
const char *name;
int code;
} tokens[] = {
{ "amp", '&' }, { "lt", '<' }, { "gt", '>' }, { "quot", '"' },
{ "nbsp", ' ' /* 160 */ },
{ "iexcl", 161 }, { "cent", 162 }, { "pound", 163 }, { "curren", 164 },
{ "yen", 165 }, { "brvbar", 166 }, { "brkbar", 166 }, { "sect", 167 },
{ "uml", 168 }, { "die", 168 }, { "copy", 169 }, { "ordf", 170 },
{ "laquo", 171 }, { "not", 172 }, { "shy", 173 }, { "reg", 174 },
{ "macr", 175 }, { "hibar", 175 }, { "deg", 176 }, { "plusmn", 177 },
{ "sup2", 178 }, { "sup3", 179 }, { "acute", 180 }, { "micro", 181 },
{ "para", 182 }, { "middot", 183 }, { "cedil", 184 }, { "sup1", 185 },
{ "ordm", 186 }, { "raquo", 187 }, { "frac14", 188 }, { "frac12", 189 },
{ "frac34", 190 }, { "iquest", 191 }, { "Agrave", 192 }, { "Aacute", 193 },
{ "Acirc", 194 }, { "Atilde", 195 }, { "Auml", 196 }, { "Aring", 197 },
{ "AElig", 198 }, { "Ccedil", 199 }, { "Egrave", 200 }, { "Eacute", 201 },
{ "Ecirc", 202 }, { "Euml", 203 }, { "Igrave", 204 }, { "Iacute", 205 },
{ "Icirc", 206 }, { "Iuml", 207 }, { "ETH", 208 }, { "Dstrok", 208 },
{ "Ntilde", 209 }, { "Ograve", 210 }, { "Oacute", 211 }, { "Ocirc", 212 },
{ "Otilde", 213 }, { "Ouml", 214 }, { "times", 215 }, { "Oslash", 216 },
{ "Ugrave", 217 }, { "Uacute", 218 }, { "Ucirc", 219 }, { "Uuml", 220 },
{ "Yacute", 221 }, { "THORN", 222 }, { "szlig", 223 }, { "agrave", 224 },
{ "aacute", 225 }, { "acirc", 226 }, { "atilde", 227 }, { "auml", 228 },
{ "aring", 229 }, { "aelig", 230 }, { "ccedil", 231 }, { "egrave", 232 },
{ "eacute", 233 }, { "ecirc", 234 }, { "euml", 235 }, { "igrave", 236 },
{ "iacute", 237 }, { "icirc", 238 }, { "iuml", 239 }, { "eth", 240 },
{ "ntilde", 241 }, { "ograve", 242 }, { "oacute", 243 }, { "ocirc", 244 },
{ "otilde", 245 }, { "ouml", 246 }, { "divide", 247 }, { "oslash", 248 },
{ "ugrave", 249 }, { "uacute", 250 }, { "ucirc", 251 }, { "uuml", 252 },
{ "yacute", 253 }, { "thorn", 254 }, { "yuml", 255 },
{ NULL, 0 },
};
for (int i = 0; tokens[i].name != NULL; i++) {
if (sequence == tokens[i].name) {
// Here's a match.
return tokens[i].code;
}
}
// Some unrecognized sequence.
return 0;
}
////////////////////////////////////////////////////////////////////
// Function: TextNode::do_rebuild
// Access: Private
// Description: Removes any existing children of the TextNode, and
// adds the newly generated text instead.
////////////////////////////////////////////////////////////////////
void TextNode::
do_rebuild() {
_needs_rebuild = false;
int num_children = get_num_children(RenderRelation::get_class_type());
while (num_children > 0) {
NodeRelation *arc = get_child(RenderRelation::get_class_type(), 0);
remove_arc(arc);
num_children--;
}
PT_Node new_text = generate();
if (new_text != (Node *)NULL) {
new RenderRelation(this, new_text);
// And we flatten one more time, to remove the new node itself if
// possible (it might be an unneeded node above multiple
// children). This flatten operation should be fairly
// lightweight; it's already pretty flat.
SceneGraphReducer gr(RenderRelation::get_class_type());
gr.flatten(this, false);
}
}
////////////////////////////////////////////////////////////////////
// Function: TextNode::do_measure
// Access: Private
// Description: Can be called in lieu of do_rebuild() to measure the
// text and set up the bounding boxes properly without
// actually assembling it.
////////////////////////////////////////////////////////////////////
void TextNode::
do_measure() {
_ul2d.set(0.0f, 0.0f);
_lr2d.set(0.0f, 0.0f);
_ul3d.set(0.0f, 0.0f, 0.0f);
_lr3d.set(0.0f, 0.0f, 0.0f);
_num_rows = 0;
if (_text.empty() || _font.is_null()) {
return;
}
wstring wtext = _wtext;
if (has_wordwrap()) {
wtext = _font->wordwrap_to(wtext, _wordwrap_width, false);
}
LVector2f ul, lr;
int num_rows = 0;
measure_text(wtext.begin(), wtext.end(), ul, lr, num_rows);
_num_rows = num_rows;
_ul2d = ul;
_lr2d = lr;
_ul3d.set(ul[0], 0.0f, ul[1]);
_lr3d.set(lr[0], 0.0f, lr[1]);
_ul3d = _ul3d * _transform;
_lr3d = _lr3d * _transform;
}
#ifndef CPPPARSER // interrogate has a bit of trouble with wstring.
////////////////////////////////////////////////////////////////////
// Function: TextNode::assemble_row
// Access: Private
// Description: Assembles the letters in the source string, up until
// the first newline or the end of the string into a
// single row (which is parented to 'dest'), and returns
// the length of the row. The source pointer is moved
// to the terminating character.
////////////////////////////////////////////////////////////////////
float TextNode::
assemble_row(wstring::iterator &si, const wstring::iterator &send,
Node *dest) {
nassertr(_font != (TextFont *)NULL, 0.0f);
float xpos = 0.0f;
while (si != send && (*si) != '\n') {
wchar_t character = *si;
if (character == ' ') {
// A space is a special case.
xpos += _font->get_space_advance();
} else {
// A printable character.
const TextGlyph *glyph;
float glyph_scale;
if (!_font->get_glyph(character, glyph, glyph_scale)) {
text_cat.warning()
<< "No definition in " << _font->get_name()
<< " for character " << character;
if (character < 128 && isprint(character)) {
text_cat.warning(false)
<< " ('" << (char)character << "')";
}
text_cat.warning(false)
<< "\n";
}
if (glyph != (TextGlyph *)NULL) {
PT(Geom) char_geom = glyph->get_geom();
const AllTransitionsWrapper &trans = glyph->get_trans();
if (char_geom != (Geom *)NULL) {
LMatrix4f mat = LMatrix4f::scale_mat(glyph_scale);
mat.set_row(3, LVector3f(xpos, 0.0f, 0.0f));
string ch(1, (char)character);
GeomNode *geode = new GeomNode(ch);
geode->add_geom(char_geom);
RenderRelation* rel = new RenderRelation(dest, geode);
rel->set_transition(new TransformTransition(mat));
trans.store_to(rel);
}
xpos += glyph->get_advance() * glyph_scale;
}
}
++si;
}
return xpos;
}
////////////////////////////////////////////////////////////////////
// Function: TextNode::assemble_text
// Access: Private
// Description: Constructs a hierarchy of nodes that contain the
// geometry representing the indicated source text, and
// returns it. Also sets the ul, lr corners.
////////////////////////////////////////////////////////////////////
Node *TextNode::
assemble_text(wstring::iterator si, const wstring::iterator &send,
LVector2f &ul, LVector2f &lr, int &num_rows) {
nassertr(_font != (TextFont *)NULL, (Node *)NULL);
float line_height = get_line_height();
ul.set(0.0f, 0.8f * line_height);
lr.set(0.0f, 0.0f);
// Make a group node to hold our formatted text geometry.
Node *root_node = new NamedNode("text");
float posy = 0.0f;
int row_index = 0;
while (si != send) {
char numstr[20];
sprintf(numstr, "row%d", row_index);
nassertr(strlen(numstr) < 20, root_node);
Node *row = new NamedNode(numstr);
float row_width = assemble_row(si, send, row);
if (si != send) {
// Skip past the newline.
++si;
}
LMatrix4f mat = LMatrix4f::ident_mat();
if (_align == A_left) {
mat.set_row(3, LVector3f(0.0f, 0.0f, posy));
lr[0] = max(lr[0], row_width);
} else if (_align == A_right) {
mat.set_row(3, LVector3f(-row_width, 0.0f, posy));
ul[0] = min(ul[0], -row_width);
} else {
float half_row_width=0.5f*row_width;
mat.set_row(3, LVector3f(-half_row_width, 0.0f, posy));
lr[0] = max(lr[0], half_row_width);
ul[0] = min(ul[0], -half_row_width);
}
// Also apply whatever slant the user has asked for to the entire
// row. This is an X shear.
if (_slant != 0.0f) {
LMatrix4f shear(1.0f, 0.0f, 0.0f, 0.0f,
0.0f, 1.0f, 0.0f, 0.0f,
_slant, 0.0f, 1.0f, 0.0f,
0.0f, 0.0f, 0.0f, 1.0f);
mat = shear * mat;
}
RenderRelation *arc = new RenderRelation(root_node, row);
arc->set_transition(new TransformTransition(mat));
posy -= line_height;
num_rows++;
}
lr[1] = posy + 0.8f * line_height;
return root_node;
}
////////////////////////////////////////////////////////////////////
// Function: TextNode::measure_row
// Access: Private
// Description: Returns the length of the row in units, as it would
// be if it were assembled, without actually assembling
// it.
////////////////////////////////////////////////////////////////////
float TextNode::
measure_row(wstring::iterator &si, const wstring::iterator &send) {
float xpos = 0.0f;
while (si != send && *si != '\n') {
wchar_t character = *si;
if (character == ' ') {
// A space is a special case.
xpos += _font->get_space_advance();
} else {
// A printable character.
const TextGlyph *glyph;
float glyph_scale;
if (_font->get_glyph(character, glyph, glyph_scale)) {
xpos += glyph->get_advance() * glyph_scale;
}
}
++si;
}
return xpos;
}
////////////////////////////////////////////////////////////////////
// Function: TextNode::measure_text
// Access: Private
// Description: Sets the ul, lr corners to fit the text, without
// actually assembling it.
////////////////////////////////////////////////////////////////////
void TextNode::
measure_text(wstring::iterator si, const wstring::iterator &send,
LVector2f &ul, LVector2f &lr, int &num_rows) {
nassertv(_font != (TextFont *)NULL);
float line_height = get_line_height();
ul.set(0.0f, 0.8f * line_height);
lr.set(0.0f, 0.0f);
float posy = 0.0f;
while (si != send) {
float row_width = measure_row(si, send);
if (si != send) {
// Skip past the newline.
++si;
}
if (_align == A_left) {
lr[0] = max(lr[0], row_width);
} else if (_align == A_right) {
ul[0] = min(ul[0], -row_width);
} else {
float half_row_width=0.5f*row_width;
lr[0] = max(lr[0], half_row_width);
ul[0] = min(ul[0], -half_row_width);
}
posy -= line_height;
num_rows++;
}
lr[1] = posy + 0.8f * line_height;
}
#endif // CPPPARSER
////////////////////////////////////////////////////////////////////
// Function: TextNode::make_frame
// Access: Private
// Description: Creates a frame around the text.
////////////////////////////////////////////////////////////////////
Node *TextNode::
make_frame() {
GeomNode *frame_geode = new GeomNode("frame");
LVector4f dimensions = get_frame_actual();
float left = dimensions[0];
float right = dimensions[1];
float bottom = dimensions[2];
float top = dimensions[3];
GeomLinestrip *geoset = new GeomLinestrip;
PTA_int lengths=PTA_int::empty_array(0);
PTA_Vertexf verts;
lengths.push_back(5);
verts.push_back(Vertexf(left, 0.0f, top));
verts.push_back(Vertexf(left, 0.0f, bottom));
verts.push_back(Vertexf(right, 0.0f, bottom));
verts.push_back(Vertexf(right, 0.0f, top));
verts.push_back(Vertexf(left, 0.0f, top));
geoset->set_num_prims(1);
geoset->set_lengths(lengths);
geoset->set_coords(verts);
geoset->set_width(_frame_width);
frame_geode->add_geom(geoset);
if (get_frame_corners()) {
GeomPoint *geoset = new GeomPoint;
geoset->set_num_prims(4);
geoset->set_coords(verts);
geoset->set_size(_frame_width);
frame_geode->add_geom(geoset);
}
return frame_geode;
}
////////////////////////////////////////////////////////////////////
// Function: TextNode::make_card
// Access: Private
// Description: Creates a card behind the text.
////////////////////////////////////////////////////////////////////
Node *TextNode::
make_card() {
GeomNode *card_geode = new GeomNode("card");
LVector4f dimensions = get_card_actual();
float left = dimensions[0];
float right = dimensions[1];
float bottom = dimensions[2];
float top = dimensions[3];
GeomTristrip *geoset = new GeomTristrip;
PTA_int lengths=PTA_int::empty_array(0);
lengths.push_back(4);
PTA_Vertexf verts;
verts.push_back(Vertexf::rfu(left, 0.02f, top));
verts.push_back(Vertexf::rfu(left, 0.02f, bottom));
verts.push_back(Vertexf::rfu(right, 0.02f, top));
verts.push_back(Vertexf::rfu(right, 0.02f, bottom));
geoset->set_num_prims(1);
geoset->set_lengths(lengths);
geoset->set_coords(verts);
if (has_card_texture()) {
PTA_TexCoordf uvs;
uvs.push_back(TexCoordf(0.0f, 1.0f));
uvs.push_back(TexCoordf(0.0f, 0.0f));
uvs.push_back(TexCoordf(1.0f, 1.0f));
uvs.push_back(TexCoordf(1.0f, 0.0f));
geoset->set_texcoords(uvs, G_PER_VERTEX);
}
card_geode->add_geom(geoset);
return card_geode;
}
////////////////////////////////////////////////////////////////////
// Function: TextNode::make_card_with_border
// Access: Private
// Description: Creates a card behind the text with a specified border
// for button edge or what have you.
////////////////////////////////////////////////////////////////////
Node *TextNode::
make_card_with_border() {
GeomNode *card_geode = new GeomNode("card");
LVector4f dimensions = get_card_actual();
float left = dimensions[0];
float right = dimensions[1];
float bottom = dimensions[2];
float top = dimensions[3];
// we now create three tri-strips instead of one
// with vertices arranged as follows:
//
// 1 3 5 7 - one
// 2 4 6 8 / \ two
// 9 11 13 15 \ /
// 10 12 14 16 - three
//
GeomTristrip *geoset = new GeomTristrip;
PTA_int lengths;
lengths.push_back(8);
lengths.push_back(8);
lengths.push_back(8);
PTA_Vertexf verts;
// verts 1,2,3,4
verts.push_back(Vertexf::rfu(left, 0.02f, top));
verts.push_back(Vertexf::rfu(left, 0.02f, top - _card_border_size));
verts.push_back(Vertexf::rfu(left + _card_border_size, 0.02f, top));
verts.push_back(Vertexf::rfu(left + _card_border_size, 0.02f,
top - _card_border_size));
// verts 5,6,7,8
verts.push_back(Vertexf::rfu(right - _card_border_size, 0.02f, top));
verts.push_back(Vertexf::rfu(right - _card_border_size, 0.02f,
top - _card_border_size));
verts.push_back(Vertexf::rfu(right, 0.02f, top));
verts.push_back(Vertexf::rfu(right, 0.02f, top - _card_border_size));
// verts 9,10,11,12
verts.push_back(Vertexf::rfu(left, 0.02f, bottom + _card_border_size));
verts.push_back(Vertexf::rfu(left, 0.02f, bottom));
verts.push_back(Vertexf::rfu(left + _card_border_size, 0.02f,
bottom + _card_border_size));
verts.push_back(Vertexf::rfu(left + _card_border_size, 0.02f, bottom));
// verts 13,14,15,16
verts.push_back(Vertexf::rfu(right - _card_border_size, 0.02f,
bottom + _card_border_size));
verts.push_back(Vertexf::rfu(right - _card_border_size, 0.02f, bottom));
verts.push_back(Vertexf::rfu(right, 0.02f, bottom + _card_border_size));
verts.push_back(Vertexf::rfu(right, 0.02f, bottom));
PTA_ushort indices;
// tristrip #1
indices.push_back(0);
indices.push_back(1);
indices.push_back(2);
indices.push_back(3);
indices.push_back(4);
indices.push_back(5);
indices.push_back(6);
indices.push_back(7);
// tristrip #2
indices.push_back(1);
indices.push_back(8);
indices.push_back(3);
indices.push_back(10);
indices.push_back(5);
indices.push_back(12);
indices.push_back(7);
indices.push_back(14);
// tristrip #3
indices.push_back(8);
indices.push_back(9);
indices.push_back(10);
indices.push_back(11);
indices.push_back(12);
indices.push_back(13);
indices.push_back(14);
indices.push_back(15);
geoset->set_num_prims(3);
geoset->set_lengths(lengths);
geoset->set_coords(verts,indices);
if (has_card_texture()) {
PTA_TexCoordf uvs;
uvs.push_back(TexCoordf(0.0f, 1.0f)); //1
uvs.push_back(TexCoordf(0.0f, 1.0f - _card_border_uv_portion)); //2
uvs.push_back(TexCoordf(0.0f + _card_border_uv_portion, 1.0f)); //3
uvs.push_back(TexCoordf(0.0f + _card_border_uv_portion,
1.0f - _card_border_uv_portion)); //4
uvs.push_back(TexCoordf( 1.0f -_card_border_uv_portion, 1.0f)); //5
uvs.push_back(TexCoordf( 1.0f -_card_border_uv_portion,
1.0f - _card_border_uv_portion)); //6
uvs.push_back(TexCoordf(1.0f, 1.0f)); //7
uvs.push_back(TexCoordf(1.0f, 1.0f - _card_border_uv_portion)); //8
uvs.push_back(TexCoordf(0.0f, _card_border_uv_portion)); //9
uvs.push_back(TexCoordf(0.0f, 0.0f)); //10
uvs.push_back(TexCoordf(_card_border_uv_portion, _card_border_uv_portion)); //11
uvs.push_back(TexCoordf(_card_border_uv_portion, 0.0f)); //12
uvs.push_back(TexCoordf(1.0f - _card_border_uv_portion, _card_border_uv_portion));//13
uvs.push_back(TexCoordf(1.0f - _card_border_uv_portion, 0.0f));//14
uvs.push_back(TexCoordf(1.0f, _card_border_uv_portion));//15
uvs.push_back(TexCoordf(1.0f, 0.0f));//16
// we can use same ref's as before (same order)
geoset->set_texcoords(uvs, G_PER_VERTEX, indices);
}
card_geode->add_geom(geoset);
return card_geode;
}
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