Adding FlowLayout for #1

src/libntk/CMakeLists.txt

@@ -17,6 +17,7 @@ nitrogen/nwt/Container.cpp
 nitrogen/nwt/Dimension.cpp
 nitrogen/nwt/EventListener.cpp
 nitrogen/nwt/EventObject.cpp
+nitrogen/nwt/FlowLayout.cpp
 nitrogen/nwt/Font.cpp
 nitrogen/nwt/FontMetrics.cpp
 nitrogen/nwt/Graphics.cpp

src/libntk/nitrogen/nwt/FlowLayout.cpp

+/*
+ * Copyright (c) 2018, jlhawkwell
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * * Redistributions of source code must retain the above copyright notice, this
+ *   list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright notice,
+ *   this list of conditions and the following disclaimer in the documentation
+ *   and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/*
+ * File:   FlowLayout.cpp
+ * Author: jlhawkwell
+ *
+ * Created on March 24, 2018, 8:53 PM
+ */
+
+#include "FlowLayout.h"
+#include "Insets.h"
+
+namespace nitrogen {
+	namespace nwt {
+
+		FlowLayout::FlowLayout() {
+			align = LEFT;
+			flc = 0;
+			flr = 0;
+			flh = 0;
+			flv = 0;
+		}
+
+		FlowLayout::FlowLayout(unsigned int alignment) {
+			align = alignment;
+			flc = 0;
+			flr = 0;
+			flh = 0;
+			flv = 0;
+		}
+
+		FlowLayout::FlowLayout(unsigned int alignment, unsigned int hgap, unsigned int vgap) {
+			align = alignment;
+			flc = 0;
+			flr = 0;
+			flh = hgap;
+			flv = vgap;
+		}
+
+		void FlowLayout::addLayoutComponent(std::string* s, Component* c) {
+		}
+
+		void FlowLayout::addLayoutComponent(std::string& s, Component* c) {
+		}
+
+		void FlowLayout::remoteLayoutComponent(Component* c) {
+		}
+
+		Dimension* FlowLayout::minimumLayoutSize(Container* c) {
+			return c->getSize();
+		}
+
+		Dimension* FlowLayout::preferredLayoutSize(Container* c) {
+			return c->getSize();
+		}
+
+		void FlowLayout::layoutContainer(Container* parent) {
+			unsigned int count = parent->getComponentCount();
+
+			if (count) {
+				Dimension* d = parent->getSize();
+				Border* b = parent->getBorder();
+				Insets* i = new Insets(0, 0, 0, 0);
+
+				if (b) {
+					i = b->getBorderInsets(parent);
+				}
+
+				d->setSize(d->w - (i->getLeft() + i->getRight()), d->h - (i->getTop() + i->getBottom()));
+
+				unsigned int max_row_height = 0;
+				unsigned int aw = 0;
+				unsigned int ah = i->getTop();
+
+				Dimension* es;
+				Component* c;
+
+				unsigned int prev_index = 0;
+
+				if (d->w != prev_size->w) {
+					for (unsigned int a = 0; a < count; a++) {
+						c = parent->getComponent(a);
+						es = c->getPreferredSize();
+
+						if ((es->w + aw) > d->w) {
+							adjustAlignment(d->w - aw, parent, i->getLeft(), prev_index, a);
+							prev_index = a;
+
+							ah += max_row_height;
+							aw = 0;
+							max_row_height = 0;
+						}
+
+						c->setLocation(aw, ah);
+						c->setSize(es);
+
+						aw += es->w;
+						if (es->h > max_row_height) {
+							max_row_height = es->h;
+						}
+					}
+					prev_size = d;
+				}
+			}
+		}
+
+		void FlowLayout::adjustAlignment(unsigned int remainder, Container* parent,
+										unsigned int left_offset,
+										unsigned int begin, unsigned int end) {
+			if (align != LEFT) {
+				unsigned int tx;
+
+				switch (align) {
+					case RIGHT:
+						tx = remainder;
+						break;
+					case CENTER:
+						tx = remainder >> 1;
+						break;
+				}
+
+				Component* c;
+
+				for (int a = begin; a < end; a++) {
+					c = parent->getComponent(a);
+					c->setLocation(c->getX() + tx + left_offset, c->getY());
+				}
+			}
+		}
+	}
+}

src/libntk/nitrogen/nwt/FlowLayout.h

+/*
+ * Copyright (c) 2018, jlhawkwell
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * * Redistributions of source code must retain the above copyright notice, this
+ *   list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright notice,
+ *   this list of conditions and the following disclaimer in the documentation
+ *   and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/*
+ * File:   FlowLayout.h
+ * Author: jlhawkwell
+ *
+ * Created on March 24, 2018, 8:53 PM
+ */
+
+#ifndef FLOWLAYOUT_H
+#define FLOWLAYOUT_H
+
+#include <ntk.h>
+
+#include <nitrogen/nwt/Component.h>
+#include <nitrogen/nwt/Container.h>
+#include <nitrogen/nwt/LayoutManager.h>
+
+namespace nitrogen {
+	namespace nwt {
+
+		class FlowLayout : public LayoutManager {
+		public:
+			static const unsigned int LEFT = 0;
+			static const unsigned int CENTER = 1;
+			static const unsigned int RIGHT = 2;
+
+			FlowLayout();
+			FlowLayout(unsigned int alignment);
+			FlowLayout(unsigned int alignment, unsigned int hgap, unsigned int vgap);
+
+			virtual void addLayoutComponent(std::string*, Component*) override;
+			virtual void addLayoutComponent(std::string&, Component*) override;
+
+			virtual void remoteLayoutComponent(Component*);
+
+			virtual Dimension* minimumLayoutSize(Container*) override;
+			virtual Dimension* preferredLayoutSize(Container*) override;
+
+			void layoutContainer(Container*) override;
+
+		protected:
+			unsigned int align;
+			unsigned int flc, flr;
+			unsigned int flh, flv;
+			Dimension* prev_size;
+
+		private:
+		private:
+			virtual void adjustAlignment(unsigned int remainder, Container* parent,
+										unsigned int left_offset,
+										unsigned int begin, unsigned int end);
+
+		};
+	}
+}
+
+#endif /* FLOWLAYOUT_H */
+

src/libntk/nitrogen/nwt/GridLayout.h

@@ -57,6 +57,7 @@ namespace nitrogen {
 			virtual Dimension* preferredLayoutSize(Container*) override;
 
 			void layoutContainer(Container*) override;
+
 		protected:
 			unsigned int glr;
 			unsigned int glc;