StylePainter: Move progress bar painting from GProgressBar to here

We need to be able to paint progress bars without having a widget. :^)

Libraries/LibDraw/StylePainter.cpp

@@ -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);
+}

Libraries/LibDraw/StylePainter.h

@@ -30,6 +30,7 @@ public:
     static void paint_surface(Painter&, const Rect&, bool paint_vertical_lines = true, bool paint_top_line = true);
     static void paint_frame(Painter&, const Rect&, FrameShape, FrameShadow, int thickness, bool skip_vertical_lines = false);
     static void paint_window_frame(Painter&, const Rect&);
+    static void paint_progress_bar(Painter&, const Rect&, int min, int max, int value, const StringView& text = {});
 
     static Color hover_highlight_color() { return Color::from_rgb(0xe6e5e2); }
 };

Libraries/LibGUI/GProgressBar.cpp

@@ -42,39 +42,21 @@ void GProgressBar::paint_event(GPaintEvent& event)
     painter.add_clip_rect(rect);
     painter.add_clip_rect(event.rect());
 
-    // 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);
-
-    float range_size = m_max - m_min;
-    float progress = (m_value - m_min) / range_size;
-
     String progress_text;
     if (m_format != Format::NoText) {
         // Then we draw the progress text over the gradient.
         // We draw it twice, once offset (1, 1) for a drop shadow look.
         StringBuilder builder;
         builder.append(m_caption);
-        if (m_format == Format::Percentage)
+        if (m_format == Format::Percentage) {
+            float range_size = m_max - m_min;
+            float progress = (m_value - m_min) / range_size;
             builder.appendf("%d%%", (int)(progress * 100));
-        else if (m_format == Format::ValueSlashMax)
+        } else if (m_format == Format::ValueSlashMax) {
             builder.appendf("%d/%d", m_value, m_max);
-
+        }
         progress_text = builder.to_string();
-
-        painter.draw_text(rect.translated(1, 1), progress_text, TextAlignment::Center, Color::Black);
-        painter.draw_text(rect, progress_text, TextAlignment::Center, Color::White);
     }
 
-    // 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 * width();
-    Rect hole_rect { (int)progress_width, 0, (int)(width() - progress_width), height() };
-    painter.add_clip_rect(hole_rect);
-    painter.fill_rect(hole_rect, Color::White);
-
-    if (m_format != Format::NoText)
-        painter.draw_text(rect.translated(0, 0), progress_text, TextAlignment::Center, Color::Black);
+    StylePainter::paint_progress_bar(painter, rect, m_min, m_max, m_value, progress_text);
 }