Merge from layout management branch.

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@18649 a95241bf-73f2-0310-859d-f6bbb57e9c96
2006-08-26 16:21:15 +00:00
parent 01595708f3
commit 9ecf9d1c1d
277 changed files with 45889 additions and 747 deletions
@@ -0,0 +1,93 @@
+/*
+ * Copyright 2006, Haiku Inc.
+ * Distributed under the terms of the MIT License.
+ */
+#ifndef	_TWO_DIMENSIONAL_LAYOUT_H
+#define	_TWO_DIMENSIONAL_LAYOUT_H
+
+#include <Layout.h>
+
+class BLayoutContext;
+
+
+class BTwoDimensionalLayout : public BLayout {
+public:
+								BTwoDimensionalLayout();
+	virtual						~BTwoDimensionalLayout();
+
+			void				SetInsets(float left, float top, float right,
+									float bottom);
+			void				GetInsets(float* left, float* top, float* right,
+									float* bottom);
+
+			void				AlignLayoutWith(BTwoDimensionalLayout* other,
+									enum orientation orientation);
+
+	virtual	BSize				MinSize();
+	virtual	BSize				MaxSize();
+	virtual	BSize				PreferredSize();
+	virtual	BAlignment			Alignment();
+
+	virtual	bool				HasHeightForWidth();
+	virtual	void				GetHeightForWidth(float width, float* min,
+									float* max, float* preferred);
+
+	virtual	void				InvalidateLayout();
+
+	virtual	void				LayoutView();
+
+protected:
+			struct ColumnRowConstraints {
+				float	weight;
+				float	min;
+				float	max;
+			};
+
+			struct Dimensions {
+				int32	x;
+				int32	y;
+				int32	width;
+				int32	height;
+			};
+
+			BSize				AddInsets(BSize size);
+			void				AddInsets(float* minHeight, float* maxHeight,
+									float* preferredHeight);
+			BSize				SubtractInsets(BSize size);
+
+	virtual	void				PrepareItems(enum orientation orientation);
+	virtual	bool				HasMultiColumnItems();
+	virtual	bool				HasMultiRowItems();
+	
+	virtual	int32				InternalCountColumns() = 0;
+	virtual	int32				InternalCountRows() = 0;
+	virtual	void				GetColumnRowConstraints(
+									enum orientation orientation,
+									int32 index,
+									ColumnRowConstraints* constraints) = 0;
+	virtual	void	 			GetItemDimensions(BLayoutItem* item,
+									Dimensions* dimensions) = 0;
+
+private:
+			class CompoundLayouter;
+			class LocalLayouter;
+			class VerticalCompoundLayouter;
+
+			friend class LocalLayouter;
+
+			void				_ValidateMinMax();
+			BLayoutContext*		_CurrentLayoutContext();
+
+protected:
+			float				fLeftInset;
+			float				fRightInset;
+			float				fTopInset;
+			float				fBottomInset;
+			float				fHSpacing;
+			float				fVSpacing;
+
+private:
+			LocalLayouter*		fLocalLayouter;
+};
+
+#endif	//	_TWO_DIMENSIONAL_LAYOUT_H