Initial release

engine/vendor/vst3sdk/vstgui4/vstgui/uidescription/editing/uicrosslines.cpp

@@ -0,0 +1,142 @@
+// This file is part of VSTGUI. It is subject to the license terms
+// in the LICENSE file found in the top-level directory of this
+// distribution and at http://github.com/steinbergmedia/vstgui/LICENSE
+
+#include "uicrosslines.h"
+
+#if VSTGUI_LIVE_EDITING
+
+#include "../../lib/cviewcontainer.h"
+#include "../../lib/cdrawcontext.h"
+#include "uiselection.h"
+
+namespace VSTGUI {
+
+//----------------------------------------------------------------------------------------------------
+UICrossLines::UICrossLines (CViewContainer* view, int32_t style, const CColor& background, const CColor& foreground)
+: UIOverlayView (view)
+, style (style)
+, background (background)
+, foreground (foreground)
+{
+}
+
+//----------------------------------------------------------------------------------------------------
+UICrossLines::~UICrossLines ()
+{
+}
+
+//----------------------------------------------------------------------------------------------------
+void UICrossLines::update (UISelection* selection)
+{
+	invalid ();
+
+	CPoint p;
+	currentRect = selection->getBounds ();
+	localToFrame (p);
+	currentRect.offset (-p.x, -p.y);
+
+	invalid ();
+}
+
+//----------------------------------------------------------------------------------------------------
+void UICrossLines::update (const CPoint& point)
+{
+	invalid ();
+
+	currentRect.left = point.x-1;
+	currentRect.top = point.y-1;
+	currentRect.setWidth (1);
+	currentRect.setHeight (1);
+	getTargetView ()->getTransform ().transform (currentRect);
+	CPoint p;
+	getParentView ()->frameToLocal (p);
+	currentRect.offset (p.x, p.y);
+	getTargetView ()->localToFrame (p);
+	currentRect.offset (p.x, p.y);
+
+	invalid ();
+}
+
+//----------------------------------------------------------------------------------------------------
+void UICrossLines::update (const CRect& rect)
+{
+	invalid ();
+	currentRect = rect;
+	getTargetView ()->getTransform ().transform (currentRect);
+	CPoint p;
+	getParentView ()->frameToLocal (p);
+	currentRect.offset (p.x, p.y);
+	getTargetView ()->localToFrame (p);
+	currentRect.offset (p.x, p.y);
+	invalid ();
+}
+
+//----------------------------------------------------------------------------------------------------
+void UICrossLines::invalid ()
+{
+	if (style == kLassoStyle)
+	{
+		auto r = currentRect;
+		r.makeIntegral ();
+		if (!r.isEmpty ())
+			invalidRect (r);
+		return;
+	}
+	CRect frameRect = getViewSize ();
+	invalidRect (CRect (currentRect.left-3, frameRect.top, currentRect.left+3, frameRect.bottom));
+	invalidRect (CRect (frameRect.left, currentRect.top-3, frameRect.right, currentRect.top+3));
+	if (style == kSelectionStyle)
+	{
+		invalidRect (CRect (currentRect.right-3, frameRect.top, currentRect.right+3, frameRect.bottom));
+		invalidRect (CRect (frameRect.left, currentRect.bottom-3, frameRect.right, currentRect.bottom+3));
+	}
+}
+
+//----------------------------------------------------------------------------------------------------
+void UICrossLines::drawLines (CDrawContext* pContext, const CRect& size, const CRect& selectionSize)
+{
+	pContext->drawLine (CPoint (size.left, selectionSize.top), CPoint (size.right, selectionSize.top));
+	pContext->drawLine (CPoint (selectionSize.left, size.top), CPoint (selectionSize.left, size.bottom));
+	if (style == kSelectionStyle)
+	{
+		pContext->drawLine (CPoint (size.left, selectionSize.bottom - 1), CPoint (size.right, selectionSize.bottom - 1));
+		pContext->drawLine (CPoint (selectionSize.right-1, size.top), CPoint (selectionSize.right-1, size.bottom));
+	}
+}
+
+//----------------------------------------------------------------------------------------------------
+void UICrossLines::draw (CDrawContext* pContext)
+{
+	CRect size = getViewSize ();
+
+	pContext->setDrawMode (kAliasing);
+	pContext->setLineStyle (kLineSolid);
+	pContext->setFrameColor (background);
+	pContext->setLineWidth (1);
+
+	if (style == kLassoStyle)
+	{
+		auto r = currentRect;
+		r.makeIntegral ();
+		if (r.isEmpty ())
+			return;
+		pContext->setFillColor (foreground);
+		pContext->drawRect (r, kDrawFilledAndStroked);
+		return;
+	}
+
+	CRect selectionSize (currentRect);
+	drawLines (pContext, size, selectionSize);
+
+	static const CCoord dashLength [] = {3,3};
+	static const CLineStyle lineStyle (CLineStyle::kLineCapButt, CLineStyle::kLineJoinMiter, 0, 2, dashLength);
+
+	pContext->setLineStyle (lineStyle);
+	pContext->setFrameColor (foreground);
+	drawLines (pContext, size, selectionSize);
+}
+
+} // VSTGUI
+
+#endif // VSTGUI_LIVE_EDITING