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StylePainter: Move progress bar painting from GProgressBar to here

We need to be able to paint progress bars without having a widget. :^)
This commit is contained in:
Andreas Kling 2019-08-14 20:31:46 +02:00
parent f9b8a18fae
commit b777f740a4
3 changed files with 36 additions and 24 deletions

View file

@ -226,3 +226,32 @@ void StylePainter::paint_window_frame(Painter& painter, const Rect& rect)
painter.draw_line(rect.bottom_left().translated(1, -1), rect.bottom_right().translated(-1, -1), mid_shade);
painter.draw_line(rect.bottom_left().translated(2, -2), rect.bottom_right().translated(-2, -2), base_color);
}
void StylePainter::paint_progress_bar(Painter& painter, const Rect& rect, int min, int max, int value, const StringView& text)
{
// First we fill the entire widget with the gradient. This incurs a bit of
// overdraw but ensures a consistent look throughout the progression.
Color start_color(110, 34, 9);
Color end_color(244, 202, 158);
painter.fill_rect_with_gradient(rect, start_color, end_color);
if (!text.is_null()) {
painter.draw_text(rect.translated(1, 1), text, TextAlignment::Center, Color::Black);
painter.draw_text(rect, text, TextAlignment::Center, Color::White);
}
float range_size = max - min;
float progress = (value - min) / range_size;
// Then we carve out a hole in the remaining part of the widget.
// We draw the text a third time, clipped and inverse, for sharp contrast.
float progress_width = progress * rect.width();
Rect hole_rect { (int)progress_width, 0, (int)(rect.width() - progress_width), rect.height() };
hole_rect.move_by(rect.location());
PainterStateSaver saver(painter);
painter.fill_rect(hole_rect, Color::White);
painter.add_clip_rect(hole_rect);
if (!text.is_null())
painter.draw_text(rect.translated(0, 0), text, TextAlignment::Center, Color::Black);
}