Function TextAreaDraw

Siv3D/src/Siv3D/SimpleGUI/SivSimpleGUI.cpp:2170–2313

		namespace detail
		{
			static void TextAreaDraw(const TextAreaEditState& text, const Font& font, const int32 fontHeight, const RectF& region,
				const RectF& textRenderRegion, const double textRenderRegionBottomY,
				const double textCursorLineX, const double textCursorLineY0, const double textCursorLineY1,
				const String& editingText, const Vec2& editingTextPos, const double maxScroll, const bool enabled)
			{
				// テキストエリアの描画
				if (enabled)
				{
					if (text.active)
					{
						region
							.draw()
							.drawFrame(0.0, 1.5, ColorF{ 0.35, 0.7, 1.0, 0.75 })
							.drawFrame(2.5, 0.0, ColorF{ 0.35, 0.7, 1.0 });
					}
					else
					{
						region
							.draw()
							.drawFrame(2.0, 0.0, ColorF{ 0.5 });
					}
				}
				else
				{
					region
						.draw(ColorF{ 0.9 })
						.drawFrame(2.0, 0.0, ColorF{ 0.67 });
				}

				// テキスト入力カーソルの描画
				if (text.active && enabled)
				{
					const bool showCursor = (text.cursorStopwatch.ms() % 1200 < 600)
						|| (text.leftPressStopwatch.isRunning() && (text.leftPressStopwatch < SecondsF{ 0.5 }))
						|| (text.rightPressStopwatch.isRunning() && (text.rightPressStopwatch < SecondsF{ 0.5 }))
						|| (text.upPressStopwatch.isRunning() && (text.upPressStopwatch < SecondsF{ 0.5 }))
						|| (text.downPressStopwatch.isRunning() && (text.downPressStopwatch < SecondsF{ 0.5 }));

					if (showCursor)
					{
						if ((textCursorLineY0 < textRenderRegionBottomY)
							&& (textRenderRegion.y < textCursorLineY1))
						{
							const double x = (Math::Ceil(textCursorLineX) - 0.5);
							Line{ x, textCursorLineY0, x, textCursorLineY1 }.stretched(-2).draw(1, Palette::Black);
						}
					}
				}

				{
					const ColorF textColor = GetTextColor(enabled);
					const auto& pixelShader = Font::GetPixelShader(font.method());

					// テキストの描画
					{
						const ScopedCustomShader2D shader{ pixelShader };

						for (const auto& clipInfo : text.clipInfos)