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Terminal: Changex internal opacity representation to byte instead of float.

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This lets us avoid some math during paint events.
Patch contributed by "pd"
This commit is contained in:
Andreas Kling 2019-06-28 21:41:13 +02:00
parent ffcbe8f0de
commit 274b41e47c
3 changed files with 14 additions and 14 deletions
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15
Applications/Terminal/Terminal.cpp
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@ -1057,7 +1057,7 @@ void Terminal::paint_event(GPaintEvent& event)
if (m_visual_beep_timer.is_active())
painter.fill_rect(frame_inner_rect(), Color::Red);
else
painter.fill_rect(frame_inner_rect(), Color(Color::Black).with_alpha(255 * m_opacity));
painter.fill_rect(frame_inner_rect(), Color(Color::Black).with_alpha(m_opacity));
invalidate_cursor();
for (word row = 0; row < m_rows; ++row) {
@ -1066,7 +1066,7 @@ void Terminal::paint_event(GPaintEvent& event)
if (m_visual_beep_timer.is_active())
painter.fill_rect(row_rect(row), Color::Red);
else if (has_only_one_background_color)
painter.fill_rect(row_rect(row), lookup_color(line.attributes[0].background_color).with_alpha(255 * m_opacity));
painter.fill_rect(row_rect(row), lookup_color(line.attributes[0].background_color).with_alpha(m_opacity));
for (word column = 0; column < m_columns; ++column) {
char ch = line.characters[column];
bool should_reverse_fill_for_cursor_or_selection = (m_cursor_blink_state && m_in_active_window && row == m_cursor_row && column == m_cursor_column)
@ -1075,7 +1075,7 @@ void Terminal::paint_event(GPaintEvent& event)
auto character_rect = glyph_rect(row, column);
if (!has_only_one_background_color || should_reverse_fill_for_cursor_or_selection) {
auto cell_rect = character_rect.inflated(0, m_line_spacing);
painter.fill_rect(cell_rect, lookup_color(should_reverse_fill_for_cursor_or_selection ? attribute.foreground_color : attribute.background_color).with_alpha(255 * m_opacity));
painter.fill_rect(cell_rect, lookup_color(should_reverse_fill_for_cursor_or_selection ? attribute.foreground_color : attribute.background_color).with_alpha(m_opacity));
}
if (ch == ' ')
continue;
@ -1144,12 +1144,13 @@ void Terminal::update_cursor()
flush_dirty_lines();
}
void Terminal::set_opacity(float opacity)
void Terminal::set_opacity(byte new_opacity)
{
if (m_opacity == opacity)
if (m_opacity == new_opacity)
return;
window()->set_has_alpha_channel(opacity < 1);
m_opacity = opacity;
window()->set_has_alpha_channel(new_opacity < 255);
m_opacity = new_opacity;
force_repaint();
}