| /* |
| * Copyright 2000-2009 JetBrains s.r.o. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| /* |
| * @author max |
| */ |
| package com.intellij.codeInsight.daemon.impl; |
| |
| import com.intellij.codeHighlighting.Pass; |
| import com.intellij.openapi.components.AbstractProjectComponent; |
| import com.intellij.openapi.editor.Editor; |
| import com.intellij.openapi.editor.LogicalPosition; |
| import com.intellij.openapi.project.Project; |
| import com.intellij.openapi.util.ProperTextRange; |
| import com.intellij.openapi.util.TextRange; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| |
| import java.awt.*; |
| |
| public abstract class VisibleHighlightingPassFactory extends AbstractProjectComponent { |
| public VisibleHighlightingPassFactory(Project project) { |
| super(project); |
| } |
| |
| @NotNull |
| public static ProperTextRange calculateVisibleRange(@NotNull Editor editor) { |
| Rectangle rect = editor.getScrollingModel().getVisibleArea(); |
| LogicalPosition startPosition = editor.xyToLogicalPosition(new Point(rect.x, rect.y)); |
| |
| int visibleStart = editor.logicalPositionToOffset(startPosition); |
| LogicalPosition endPosition = editor.xyToLogicalPosition(new Point(rect.x + rect.width, rect.y + rect.height)); |
| |
| int visibleEnd = editor.logicalPositionToOffset(new LogicalPosition(endPosition.line + 1, 0)); |
| |
| return new ProperTextRange(visibleStart, Math.max(visibleEnd, visibleStart)); |
| } |
| |
| @Nullable |
| protected static TextRange calculateRangeToProcess(Editor editor) { |
| TextRange dirtyTextRange = FileStatusMap.getDirtyTextRange(editor, Pass.UPDATE_ALL); |
| if (dirtyTextRange == null) return null; |
| |
| TextRange visibleRange = calculateVisibleRange(editor); |
| TextRange textRange = dirtyTextRange.intersection(visibleRange); |
| |
| if (textRange == null || textRange.isEmpty() || textRange.equals(dirtyTextRange)) { |
| return null; // no sense in highlighting the same region twice |
| } |
| return textRange; |
| } |
| } |