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Code Issues Projects Releases Packages Wiki Activity Actions 9

Font: Eagerly load all 256 glyphs. It's not that many.

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This commit is contained in:
Andreas Kling 2019-01-27 05:14:15 +01:00
parent 2e370fa4d5
commit c7b005c47b
Notes: sideshowbarker 2024-07-19 15:56:14 +09:00
4 changed files with 11 additions and 28 deletions
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7
LibGUI/GTextBox.cpp
View file

@ -47,12 +47,7 @@ void GTextBox::paint_event(GPaintEvent&)
if (ch == ' ')
continue;
int x = innerRect.x() + (i * font().glyph_width());
auto* bitmap = font().glyph_bitmap(ch);
if (!bitmap) {
dbgprintf("GTextBox: glyph missing: %02x\n", ch);
ASSERT_NOT_REACHED();
}
painter.draw_bitmap({x, y}, *bitmap, Color::Black);
painter.draw_bitmap({x, y}, font().glyph_bitmap(ch), Color::Black);
}
if (is_focused() && m_cursorBlinkState) {

20
SharedGraphics/Font.cpp
View file

@ -26,20 +26,16 @@ Font::Font(const char* const* glyphs, byte glyph_width, byte glyph_height, byte
, m_last_glyph(last_glyph)
{
m_error_bitmap = CharacterBitmap::create_from_ascii(DEFAULT_FONT_NAME::error_glyph, m_glyph_width, m_glyph_height);
for (unsigned ch = 0; ch < 256; ++ch) {
if (ch < m_first_glyph || ch > m_last_glyph) {
m_bitmaps[ch] = m_error_bitmap.copyRef();
continue;
}
const char* data = m_glyphs[(unsigned)ch - m_first_glyph];
m_bitmaps[ch] = CharacterBitmap::create_from_ascii(data, m_glyph_width, m_glyph_height);
}
}
Font::~Font()
{
}
const CharacterBitmap* Font::glyph_bitmap(byte ch) const
{
if (!m_bitmaps[ch]) {
if (ch < m_first_glyph || ch > m_last_glyph)
return nullptr;
const char* data = m_glyphs[(unsigned)ch - m_first_glyph];
m_bitmaps[ch] = CharacterBitmap::create_from_ascii(data, m_glyph_width, m_glyph_height);
}
ASSERT(ch >= m_first_glyph && ch <= m_last_glyph);
return m_bitmaps[ch].ptr();
}

3
SharedGraphics/Font.h
View file

@ -11,8 +11,7 @@ public:
~Font();
const CharacterBitmap* glyph_bitmap(byte) const;
const CharacterBitmap* error_bitmap() const { return m_error_bitmap.ptr(); }
const CharacterBitmap& glyph_bitmap(char ch) const { return *m_bitmaps[(byte)ch]; }
byte glyph_width() const { return m_glyph_width; }
byte glyph_height() const { return m_glyph_height; }

9
SharedGraphics/Painter.cpp
View file

@ -184,14 +184,7 @@ void Painter::draw_bitmap(const Point& p, const CharacterBitmap& bitmap, Color c
void Painter::draw_glyph(const Point& point, char ch, Color color)
{
auto* bitmap = font().glyph_bitmap(ch);
if (!bitmap) {
dbgprintf("Font doesn't have 0x%b ('%c')\n", (byte)ch, ch);
bitmap = font().error_bitmap();
}
int x = point.x();
int y = point.y();
draw_bitmap({ x, y }, *bitmap, color);
draw_bitmap(point, font().glyph_bitmap(ch), color);
}
void Painter::draw_text(const Rect& rect, const String& text, TextAlignment alignment, Color color)