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word_wrapping::TRUNCATE was completely broken; this fixes it

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This commit is contained in:
Nathan Woods 2016-06-18 10:07:48 -04:00
parent 8362576906
commit c3b7a9e470
2 changed files with 11 additions and 7 deletions
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17
src/frontend/mame/ui/text.cpp
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@ -78,7 +78,7 @@ CORE IMPLEMENTATION
//-------------------------------------------------
text_layout::text_layout(render_font &font, float xscale, float yscale, float width, text_layout::text_justify justify, text_layout::word_wrapping wrap)
: m_font(font), m_xscale(xscale), m_yscale(yscale), m_width(width), m_justify(justify), m_wrap(wrap), m_current_line(nullptr), m_last_break(0), m_text_position(0)
: m_font(font), m_xscale(xscale), m_yscale(yscale), m_width(width), m_justify(justify), m_wrap(wrap), m_current_line(nullptr), m_last_break(0), m_text_position(0), m_truncating(false)
{
}
@ -90,7 +90,7 @@ text_layout::text_layout(render_font &font, float xscale, float yscale, float wi
text_layout::text_layout(text_layout &&that)
: m_font(that.m_font), m_xscale(that.m_xscale), m_yscale(that.m_yscale), m_width(that.m_width), m_justify(that.m_justify), m_wrap(that.m_wrap), m_lines(std::move(that.m_lines)),
m_current_line(that.m_current_line), m_last_break(that.m_last_break), m_text_position(that.m_text_position)
m_current_line(that.m_current_line), m_last_break(that.m_last_break), m_text_position(that.m_text_position), m_truncating(false)
{
}
@ -162,7 +162,7 @@ void text_layout::add_text(const char *text, const char_style &style)
update_maximum_line_width();
m_current_line = nullptr;
}
else
else if (!m_truncating)
{
// if we hit a space, remember the location and width *without* the space
if (is_space_character(ch))
@ -250,6 +250,7 @@ void text_layout::start_new_line(text_layout::text_justify justify, float height
update_maximum_line_width();
m_current_line = new_line.get();
m_last_break = 0;
m_truncating = false;
// append it
m_lines.push_back(std::move(new_line));
@ -272,6 +273,8 @@ float text_layout::get_char_width(unicode_char ch, float size)
void text_layout::truncate_wrap()
{
const unicode_char elipsis = 0x2026;
// for now, lets assume that we're only truncating the last character
size_t truncate_position = m_current_line->character_count() - 1;
const auto& truncate_char = m_current_line->character(truncate_position);
@ -285,7 +288,7 @@ void text_layout::truncate_wrap()
source.span = 0;
// figure out how wide an elipsis is
float elipsis_width = 3 * get_char_width('.', style.size);
float elipsis_width = get_char_width(elipsis, style.size);
// where should we really truncate from?
while (truncate_position > 0 && m_current_line->character(truncate_position).xoffset + elipsis_width < width())
@ -295,10 +298,10 @@ void text_layout::truncate_wrap()
m_current_line->truncate(truncate_position);
// and append the elipsis
m_current_line->add_character('.', style, source);
m_current_line->add_character(elipsis, style, source);
// finally start a new line
start_new_line(m_current_line->justify(), style.size);
// take note that we are truncating; supress new characters
m_truncating = true;
}

1
src/frontend/mame/ui/text.h
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@ -145,6 +145,7 @@ private:
line *m_current_line;
size_t m_last_break;
size_t m_text_position;
bool m_truncating;
// methods
void add_text(const char *text, const char_style &style);