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SharedGraphics: Allow passing a Font to text drawing functions.

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This way we don't have to juggle around with calls to Painter::set_font()
which simplifies a bunch of places.
This commit is contained in:
Andreas Kling 2019-03-09 21:24:12 +01:00
parent b8f999cbef
commit ffe4522316
5 changed files with 63 additions and 29 deletions
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35
SharedGraphics/Painter.cpp
View file

@ -323,37 +323,42 @@ void Painter::blit(const Point& position, const GraphicsBitmap& source, const Re
[[gnu::flatten]] void Painter::draw_glyph(const Point& point, char ch, Color color)
{
draw_bitmap(point, font().glyph_bitmap(ch), color);
draw_glyph(point, ch, font(), color);
}
void Painter::draw_text(const Rect& rect, const char* text, int length, TextAlignment alignment, Color color)
[[gnu::flatten]] void Painter::draw_glyph(const Point& point, char ch, const Font& font, Color color)
{
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)
{
Point point;
if (alignment == TextAlignment::TopLeft) {
point = rect.location();
} else if (alignment == TextAlignment::CenterLeft) {
point = { rect.x(), rect.center().y() - (font().glyph_height() / 2) };
point = { rect.x(), rect.center().y() - (font.glyph_height() / 2) };
} else if (alignment == TextAlignment::CenterRight) {
int text_width = font().width(text);
point = { rect.right() - text_width, rect.center().y() - (font().glyph_height() / 2) };
int text_width = font.width(text);
point = { rect.right() - text_width, rect.center().y() - (font.glyph_height() / 2) };
} else if (alignment == TextAlignment::Center) {
int text_width = font().width(text);
int text_width = font.width(text);
point = rect.center();
point.move_by(-(text_width / 2), -(font().glyph_height() / 2));
point.move_by(-(text_width / 2), -(font.glyph_height() / 2));
} else {
ASSERT_NOT_REACHED();
}
int space_width = font().glyph_width(' ') + font().glyph_spacing();
int space_width = font.glyph_width(' ') + font.glyph_spacing();
for (ssize_t i = 0; i < length; ++i) {
char ch = text[i];
if (ch == ' ') {
point.move_by(space_width, 0);
continue;
}
draw_glyph(point, ch, color);
point.move_by(font().glyph_width(ch) + font().glyph_spacing(), 0);
draw_glyph(point, ch, font, color);
point.move_by(font.glyph_width(ch) + font.glyph_spacing(), 0);
}
}
@ -362,6 +367,16 @@ void Painter::draw_text(const Rect& rect, const String& text, TextAlignment alig
draw_text(rect, text.characters(), text.length(), alignment, color);
}
void Painter::draw_text(const Rect& rect, const String& text, const Font& font, TextAlignment alignment, Color color)
{
draw_text(rect, text.characters(), text.length(), font, alignment, color);
}
void Painter::draw_text(const Rect& rect, const char* text, int length, TextAlignment alignment, Color color)
{
draw_text(rect, text, length, font(), alignment, color);
}
void Painter::set_pixel(const Point& p, Color color)
{
auto point = p;

7
SharedGraphics/Painter.h
View file

@ -35,9 +35,12 @@ public:
void blit(const Point&, const GraphicsBitmap&, const Rect& src_rect);
void blit_with_opacity(const Point&, const GraphicsBitmap&, const Rect& src_rect, float opacity);
void draw_text(const Rect&, const char* text, int length, TextAlignment = TextAlignment::TopLeft, Color = Color());
void draw_text(const Rect&, const String&, TextAlignment = TextAlignment::TopLeft, Color = Color());
void draw_text(const Rect&, const char* text, int length, const Font&, TextAlignment = TextAlignment::TopLeft, Color = Color::Black);
void draw_text(const Rect&, const char* text, int length, TextAlignment = TextAlignment::TopLeft, Color = Color::Black);
void draw_text(const Rect&, const String&, const Font&, TextAlignment = TextAlignment::TopLeft, Color = Color::Black);
void draw_text(const Rect&, const String&, TextAlignment = TextAlignment::TopLeft, Color = Color::Black);
void draw_glyph(const Point&, char, Color);
void draw_glyph(const Point&, char, const Font&, Color);
const Font& font() const { return *state().font; }
void set_font(const Font& font) { state().font = &font; }