X-Git-Url: https://mograsim.net/gitweb/?a=blobdiff_plain;f=plugins%2Fnet.mograsim.plugin.core%2Fsrc%2Fnet%2Fmograsim%2Fplugin%2Ftables%2Fmi%2FFontAndColorHelper.java;fp=plugins%2Fnet.mograsim.plugin.core%2Fsrc%2Fnet%2Fmograsim%2Fplugin%2Ftables%2Fmi%2FFontAndColorHelper.java;h=90d53dcfb4e566a9fe92f0281ea81673b065ea04;hb=6d80fa458ec324491663d7640e8d079aa0e44953;hp=0000000000000000000000000000000000000000;hpb=0eb525202d3c871a2a20f789af1728248f3cff11;p=Mograsim.git

diff --git a/plugins/net.mograsim.plugin.core/src/net/mograsim/plugin/tables/mi/FontAndColorHelper.java b/plugins/net.mograsim.plugin.core/src/net/mograsim/plugin/tables/mi/FontAndColorHelper.java
new file mode 100644
index 00000000..90d53dcf
--- /dev/null
+++ b/plugins/net.mograsim.plugin.core/src/net/mograsim/plugin/tables/mi/FontAndColorHelper.java
@@ -0,0 +1,123 @@
+package net.mograsim.plugin.tables.mi;
+
+import org.eclipse.jface.resource.ColorRegistry;
+import org.eclipse.jface.resource.FontRegistry;
+import org.eclipse.jface.util.IPropertyChangeListener;
+import org.eclipse.jface.viewers.TableViewer;
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.graphics.Color;
+import org.eclipse.swt.graphics.Font;
+import org.eclipse.swt.widgets.Display;
+import org.eclipse.ui.themes.ITheme;
+import org.eclipse.ui.themes.IThemeManager;
+
+import net.mograsim.machine.mi.MicroInstructionMemory;
+
+public class FontAndColorHelper
+{
+	private final TableViewer viewer;
+	private final IThemeManager themeManager;
+	private long highlightedAddress = -1;
+	private ColorRegistry cRegistry;
+	private FontRegistry fRegistry;
+	private Font boldItalic;
+
+	private final static String font = "net.mograsim.plugin.table_font",
+			colorModifBackground = "net.mograsim.plugin.modified_cell_bg_color",
+			colorModifForeground = "net.mograsim.plugin.modified_cell_fg_color",
+			colorHighlightedForeground = "net.mograsim.plugin.highlighted_cell_fg_color",
+			colorHighlightedBackground = "net.mograsim.plugin.highlighted_cell_bg_color";
+	private final IPropertyChangeListener updateListener;
+
+	public FontAndColorHelper(TableViewer viewer, IThemeManager themeManager)
+	{
+		this.viewer = viewer;
+		this.themeManager = themeManager;
+		themeChanged(themeManager.getCurrentTheme());
+		updateListener = e ->
+		{
+			switch (e.getProperty())
+			{
+			case IThemeManager.CHANGE_CURRENT_THEME:
+				themeChanged(themeManager.getCurrentTheme());
+				//$FALL-THROUGH$
+			case font:
+			case colorModifBackground:
+			case colorModifForeground:
+				viewer.refresh();
+				break;
+			default:
+				break;
+			}
+		};
+		themeManager.addPropertyChangeListener(updateListener);
+	}
+
+	private void themeChanged(ITheme theme)
+	{
+		cRegistry = theme.getColorRegistry();
+		fRegistry = theme.getFontRegistry();
+		boldItalic = fRegistry.getDescriptor(font).setStyle(SWT.BOLD | SWT.ITALIC).createFont(Display.getDefault());
+		viewer.getTable().setFont(fRegistry.get(font));
+	}
+
+	public Color getBackground(Object element, int column)
+	{
+		InstructionTableRow row = (InstructionTableRow) element;
+		if (isDefault(row, column))
+		{
+			if (isHighlighted(row))
+				return cRegistry.get(colorHighlightedBackground);
+			return viewer.getTable().getBackground();
+		}
+		return cRegistry.get(colorModifBackground);
+	}
+
+	public Color getForeground(Object element, int column)
+	{
+		InstructionTableRow row = (InstructionTableRow) element;
+		if (isDefault(row, column))
+		{
+			if (isHighlighted(row))
+				return cRegistry.get(colorHighlightedForeground);
+			return viewer.getTable().getForeground();
+		}
+		return cRegistry.get(colorModifForeground);
+	}
+
+	public Font getFont(Object element, int column)
+	{
+		InstructionTableRow row = (InstructionTableRow) element;
+		boolean modified = !isDefault(row, column), highlighted = isHighlighted(row);
+		if (modified && highlighted)
+			return boldItalic;
+		if (modified)
+			return fRegistry.getItalic(font);
+		if (highlighted)
+			return fRegistry.getBold(font);
+		return fRegistry.get(font);
+	}
+
+	private static boolean isDefault(InstructionTableRow row, int column)
+	{
+		return column == -1 ? true : row.data.getCell(row.address).getParameter(column).isDefault();
+	}
+
+	private boolean isHighlighted(InstructionTableRow row)
+	{
+		return highlightedAddress == row.address;
+	}
+
+	/**
+	 * @param index Index of the row to highlight; An negative index means no row is highlighted
+	 */
+	public void highlight(long row)
+	{
+		highlightedAddress = row + ((MicroInstructionMemory) viewer.getInput()).getDefinition().getMinimalAddress();
+	}
+
+	public void dispose()
+	{
+		themeManager.removePropertyChangeListener(updateListener);
+	}
+}