Function DrawFrameRect

src/widget.cpp:307–340

* Draw frame rectangle. * @param left Left edge of the frame * @param top Top edge of the frame * @param right Right edge of the frame * @param bottom Bottom edge of the frame * @param colour Colour table to use. @see Colours * @param flags Flags controlling how to draw the frame. @see FrameFlags */

 * @param flags  Flags controlling how to draw the frame. @see FrameFlags
 */
void DrawFrameRect(int left, int top, int right, int bottom, Colours colour, FrameFlags flags)
{
	if (flags.Test(FrameFlag::Transparent)) {
		GfxFillRect(left, top, right, bottom, PALETTE_TO_TRANSPARENT, FILLRECT_RECOLOUR);
	} else {
		assert(colour < COLOUR_END);

		const PixelColour dark         = GetColourGradient(colour, SHADE_DARK);
		const PixelColour medium_dark  = GetColourGradient(colour, SHADE_LIGHT);
		const PixelColour medium_light = GetColourGradient(colour, SHADE_LIGHTER);
		const PixelColour light        = GetColourGradient(colour, SHADE_LIGHTEST);
		PixelColour interior;

		Rect outer = {left, top, right, bottom};                   // Outside rectangle
		Rect inner = outer.Shrink(WidgetDimensions::scaled.bevel); // Inside rectangle

		if (flags.Test(FrameFlag::Lowered)) {
			GfxFillRect(outer.left,      outer.top,        inner.left - 1,  outer.bottom, dark);   // Left
			GfxFillRect(inner.left,      outer.top,        outer.right,     inner.top - 1, dark);  // Top
			GfxFillRect(inner.right + 1, inner.top,        outer.right,     inner.bottom,  light); // Right
			GfxFillRect(inner.left,      inner.bottom + 1, outer.right,     outer.bottom, light);  // Bottom
			interior = (flags.Test(FrameFlag::Darkened) ? medium_dark : medium_light);
		} else {
			GfxFillRect(outer.left,      outer.top,        inner.left - 1, inner.bottom,  light); // Left
			GfxFillRect(inner.left,      outer.top,        inner.right,    inner.top - 1, light); // Top
			GfxFillRect(inner.right + 1, outer.top,        outer.right,    inner.bottom,  dark);  // Right
			GfxFillRect(outer.left,      inner.bottom + 1, outer.right,    outer.bottom, dark);   // Bottom
			interior = medium_dark;
		}
		if (!flags.Test(FrameFlag::BorderOnly)) {
			GfxFillRect(inner.left,  inner.top, inner.right, inner.bottom, interior); // Inner
		}
	}
}

void DrawSpriteIgnorePadding(SpriteID img, PaletteID pal, const Rect &r, StringAlignment align)
{