Add DynamicGridWidget

gui/CMakeLists.txt

@@ -16,7 +16,9 @@ add_executable(chiaki
 		include/discoverycmd.h
 		src/discoverycmd.cpp
 		include/mainwindow.h
-		src/mainwindow.cpp)
+		src/mainwindow.cpp
+		include/dynamicgridwidget.h
+		src/dynamicgridwidget.cpp)
 target_include_directories(chiaki PRIVATE include)
 
 target_link_libraries(chiaki chiaki-lib)

gui/include/dynamicgridwidget.h

@@ -0,0 +1,52 @@
+/*
+ * This file is part of Chiaki.
+ *
+ * Chiaki is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Chiaki is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Chiaki.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef CHIAKI_DYNAMICGRIDWIDGET_H
+#define CHIAKI_DYNAMICGRIDWIDGET_H
+
+#include <QWidget>
+
+class QGridLayout;
+
+class DynamicGridWidget : public QWidget
+{
+	Q_OBJECT
+
+	private:
+		QGridLayout *layout;
+		QList<QWidget *> widgets;
+		unsigned int item_width;
+		unsigned int columns;
+
+		void UpdateLayout();
+		void UpdateLayoutIfNecessary();
+		unsigned int CalculateColumns();
+
+	protected:
+		void resizeEvent(QResizeEvent *) override { UpdateLayoutIfNecessary(); }
+
+	public:
+		explicit DynamicGridWidget(unsigned int item_width, QWidget *parent = nullptr);
+
+		void AddWidget(QWidget *widget);
+		void RemoveWidget(QWidget *widget);
+
+		void SetItemWidth(int item_width) { this->item_width = item_width; UpdateLayoutIfNecessary(); }
+
+};
+
+#endif //CHIAKI_DYNAMICGRIDWIDGET_H

gui/include/mainwindow.h

@@ -20,10 +20,16 @@
 
 #include <QWidget>
 
+class QTableWidget;
+class DynamicGridWidget;
+
 class MainWindow : public QWidget
 {
 	Q_OBJECT
 
+	private:
+		DynamicGridWidget *grid_widget;
+
 	public:
 		explicit MainWindow(QWidget *parent = nullptr);
 };

gui/src/dynamicgridwidget.cpp

@@ -0,0 +1,73 @@
+/*
+ * This file is part of Chiaki.
+ *
+ * Chiaki is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Chiaki is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Chiaki.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <dynamicgridwidget.h>
+
+#include <QGridLayout>
+
+DynamicGridWidget::DynamicGridWidget(unsigned int item_width, QWidget *parent)
+{
+	layout = new QGridLayout(this);
+	layout->setHorizontalSpacing(10);
+	layout->setVerticalSpacing(10);
+	setLayout(layout);
+	this->item_width = item_width;
+	columns = CalculateColumns();
+}
+
+void DynamicGridWidget::AddWidget(QWidget *widget)
+{
+	if(widgets.contains(widget))
+		return;
+	widget->setParent(this);
+	widgets.append(widget);
+	UpdateLayout();
+}
+
+void DynamicGridWidget::RemoveWidget(QWidget *widget)
+{
+	layout->removeWidget(widget);
+	widget->setParent(nullptr);
+	widgets.removeAll(widget);
+}
+
+unsigned int DynamicGridWidget::CalculateColumns()
+{
+	return (width() + layout->horizontalSpacing()) / (item_width + layout->horizontalSpacing());
+}
+
+void DynamicGridWidget::UpdateLayout()
+{
+	while(layout->count() > 0)
+		layout->removeItem(layout->itemAt(0));
+
+	columns = CalculateColumns();
+	if(columns == 0)
+		return;
+
+	for(unsigned int i=0; i<widgets.length(); i++)
+		layout->addWidget(widgets[i], i / columns, i % columns);
+
+	setMinimumWidth(item_width);
+}
+
+void DynamicGridWidget::UpdateLayoutIfNecessary()
+{
+	unsigned int new_columns = CalculateColumns();
+	if(new_columns != columns)
+		UpdateLayout();
+}

gui/src/mainwindow.cpp

@@ -16,7 +16,39 @@
  */
 
 #include <mainwindow.h>
+#include <dynamicgridwidget.h>
+
+#include <QTableWidget>
+#include <QVBoxLayout>
+#include <QScrollArea>
 
 MainWindow::MainWindow(QWidget *parent) : QWidget(parent)
 {
+	auto layout = new QVBoxLayout();
+	setLayout(layout);
+
+	auto scroll_area = new QScrollArea(this);
+	scroll_area->setWidgetResizable(true);
+	scroll_area->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
+	layout->addWidget(scroll_area);
+
+	auto scroll_content_widget = new QWidget(scroll_area);
+	auto scroll_content_layout = new QVBoxLayout(scroll_content_widget);
+	scroll_content_widget->setLayout(scroll_content_layout);
+	scroll_area->setWidget(scroll_content_widget);
+
+	grid_widget = new DynamicGridWidget(100, scroll_content_widget);
+	scroll_content_layout->addWidget(grid_widget);
+	scroll_content_layout->addStretch(0);
+	grid_widget->setContentsMargins(0, 0, 0, 0);
+
+	for(int i=0; i<10; i++)
+	{
+		QWidget *w = new QWidget(grid_widget);
+		w->setFixedSize(100, 100);
+		w->setStyleSheet("background-color: red;");
+		grid_widget->AddWidget(w);
+	}
+
+	resize(800, 600);
 }