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Painter: Reduce the number of draw_text overloads to only involve StringView

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No more char + int sequences, as that's literally what StringView is for.
This commit is contained in:
Robin Burchell 2019-06-02 15:56:33 +02:00 committed by Andreas Kling
parent 1024dfa81a
commit ab004f73bf
Notes: sideshowbarker 2024-07-19 13:45:27 +09:00 
Author: https://github.com/rburchell
Commit: https://github.com/SerenityOS/serenity/commit/ab004f73bf0
Pull-request: https://github.com/SerenityOS/serenity/pull/170
Reviewed-by: https://github.com/awesomekling
3 changed files with 19 additions and 31 deletions
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4
LibGUI/GTextEditor.cpp
View file

@ -301,7 +301,7 @@ void GTextEditor::paint_event(GPaintEvent& event)
//line_rect.set_width(exposed_width);
if (is_multi_line() && i == m_cursor.line())
painter.fill_rect(line_rect, Color(230, 230, 230));
painter.draw_text(line_rect, line.characters(), line.length(), m_text_alignment, Color::Black);
painter.draw_text(line_rect, StringView(line.characters(), line.length()), m_text_alignment, Color::Black);
bool line_has_selection = has_selection && i >= selection.start().line() && i <= selection.end().line();
if (line_has_selection) {
int selection_start_column_on_line = selection.start().line() == i ? selection.start().column() : 0;
@ -312,7 +312,7 @@ void GTextEditor::paint_event(GPaintEvent& event)
Rect selection_rect { selection_left, line_rect.y(), selection_right - selection_left, line_rect.height() };
painter.fill_rect(selection_rect, Color::from_rgb(0x955233));
painter.draw_text(selection_rect, line.characters() + selection_start_column_on_line, line.length() - selection_start_column_on_line - (line.length() - selection_end_column_on_line), TextAlignment::CenterLeft, Color::White);
painter.draw_text(selection_rect, StringView(line.characters() + selection_start_column_on_line, line.length() - selection_start_column_on_line - (line.length() - selection_end_column_on_line)), TextAlignment::CenterLeft, Color::White);
}
}

44
SharedGraphics/Painter.cpp
View file

@ -508,18 +508,24 @@ void Painter::draw_scaled_bitmap(const Rect& a_dst_rect, const GraphicsBitmap& s
draw_bitmap(point, font.glyph_bitmap(ch), color);
}
void Painter::draw_text(const Rect& rect, const char* text, int length, const Font& font, TextAlignment alignment, Color color, TextElision elision)
void Painter::draw_text(const Rect& rect, const StringView& text, TextAlignment alignment, Color color, TextElision elision)
{
draw_text(rect, text, font(), alignment, color, elision);
}
void Painter::draw_text(const Rect& rect, const StringView& text, const Font& font, TextAlignment alignment, Color color, TextElision elision)
{
StringView final_text(text);
String elided_text;
if (elision == TextElision::Right) {
int text_width = font.width(StringView(text, length));
if (font.width(StringView(text, length)) > rect.width()) {
int text_width = font.width(final_text);
if (font.width(final_text) > rect.width()) {
int glyph_spacing = font.glyph_spacing();
int new_length = 0;
int new_width = font.width("...");
if (new_width < text_width) {
for (int i = 0; i < length; ++i) {
int glyph_width = font.glyph_width(text[i]);
for (int i = 0; i < final_text.length(); ++i) {
int glyph_width = font.glyph_width(final_text.characters()[i]);
// NOTE: Glyph spacing should not be added after the last glyph on the line,
// but since we are here because the last glyph does not actually fit on the line,
// we don't have to worry about spacing.
@ -530,11 +536,10 @@ void Painter::draw_text(const Rect& rect, const char* text, int length, const Fo
new_width += glyph_width + glyph_spacing;
}
StringBuilder builder;
builder.append(text, new_length);
builder.append(StringView(final_text.characters(), new_length));
builder.append("...");
elided_text = builder.to_string();
text = elided_text.characters();
length = elided_text.length();
final_text = elided_text;
}
}
}
@ -546,10 +551,10 @@ void Painter::draw_text(const Rect& rect, const char* text, int length, const Fo
} else if (alignment == TextAlignment::CenterLeft) {
point = { rect.x(), rect.center().y() - (font.glyph_height() / 2) };
} else if (alignment == TextAlignment::CenterRight) {
int text_width = font.width(StringView(text, length));
int text_width = font.width(final_text);
point = { rect.right() - text_width, rect.center().y() - (font.glyph_height() / 2) };
} else if (alignment == TextAlignment::Center) {
int text_width = font.width(StringView(text, length));
int text_width = font.width(final_text);
point = rect.center();
point.move_by(-(text_width / 2), -(font.glyph_height() / 2));
} else {
@ -557,8 +562,8 @@ void Painter::draw_text(const Rect& rect, const char* text, int length, const Fo
}
int space_width = font.glyph_width(' ') + font.glyph_spacing();
for (ssize_t i = 0; i < length; ++i) {
char ch = text[i];
for (ssize_t i = 0; i < final_text.length(); ++i) {
char ch = final_text.characters()[i];
if (ch == ' ') {
point.move_by(space_width, 0);
continue;
@ -568,21 +573,6 @@ void Painter::draw_text(const Rect& rect, const char* text, int length, const Fo
}
}
void Painter::draw_text(const Rect& rect, const StringView& text, TextAlignment alignment, Color color, TextElision elision)
{
draw_text(rect, text.characters(), text.length(), alignment, color, elision);
}
void Painter::draw_text(const Rect& rect, const StringView& text, const Font& font, TextAlignment alignment, Color color, TextElision elision)
{
draw_text(rect, text.characters(), text.length(), font, alignment, color, elision);
}
void Painter::draw_text(const Rect& rect, const char* text, int length, TextAlignment alignment, Color color, TextElision elision)
{
draw_text(rect, text, length, font(), alignment, color, elision);
}
void Painter::set_pixel(const Point& p, Color color)
{
auto point = p;

2
SharedGraphics/Painter.h
View file

@ -30,8 +30,6 @@ public:
void blit_tiled(const Point&, const GraphicsBitmap&, const Rect& src_rect);
void blit_offset(const Point&, const GraphicsBitmap&, const Rect& src_rect, const Point&);
void blit_scaled(const Point&, const GraphicsBitmap&, const Rect& src_rect, const Size&);
void draw_text(const Rect&, const char* text, int length, const Font&, TextAlignment = TextAlignment::TopLeft, Color = Color::Black, TextElision = TextElision::None);
void draw_text(const Rect&, const char* text, int length, TextAlignment = TextAlignment::TopLeft, Color = Color::Black, TextElision = TextElision::None);
void draw_text(const Rect&, const StringView&, const Font&, TextAlignment = TextAlignment::TopLeft, Color = Color::Black, TextElision = TextElision::None);
void draw_text(const Rect&, const StringView&, TextAlignment = TextAlignment::TopLeft, Color = Color::Black, TextElision = TextElision::None);
void draw_glyph(const Point&, char, Color);